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309 Commits

Author SHA1 Message Date
Adhemerval Zanella
1f8161a801 Consolidate Linux recvfrom implementation 
This patch consolidates the recvfrom Linux syscall implementation on
sysdeps/unix/sysv/linux/recvfrom.c.  The changes are:

  1. Define __ASSUME_RECVFROM_SYSCALL by default
  2. Undef it for  architectures that do not support __NR_recvfrom.

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
aarch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.

	* sysdeps/unix/sysv/linux/alpha/syscalls.list: Remove recvfrom from
	auto-generation list.
	* sysdeps/unix/sysv/linux/arm/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/generic/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/hppa/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/ia64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/mips/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/i386/kernel-features.h
	* sysdeps/unix/sysv/linux/kernel-features.h
	(__ASSUME_RECVFROM_SYSCALL): Define by default.
	(__ASSUME_RECVFROM_SYSCALL): Undef it if kernel does not support
	__NR_recvfrom.
	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
	(__ASSUME_RECVFROM_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/s390/kernel-features.h
	(__ASSUME_RECVFROM_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	(__ASSUME_RECVFROM_SYSCALL): Remove definition.
	* sysdeps/unix/sysv/linux/powerpc/kernel-features.h
	(__ASSUME_RECVFROM_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/sh/kernel-features.h
	(__ASSUME_RECVFROM_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/sparc/kernel-features.h
	(__ASSUME_RECVFROM_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/recvfrom.c: Simplify includes.
 2017-03-09 15:22:06 +01:00
Adhemerval Zanella
3e9ff426cb Consolidate Linux connect implementation 
This patch consolidates the connect Linux syscall implementation on
sysdeps/unix/sysv/linux/accept.c.  The changes are:

  1. Remove connect from auto-generation syscalls.list on the architecture
     that uses __NR_connect.
  2. Define __NR_connect as default (__ASSUME_CONNECT_SYSCALL) and undef for
     architectures that do not support it.

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
aarch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.

	* sysdeps/unix/sysv/linux/alpha/syscalls.list: Remove connect from
	auto-generation list.
	* sysdeps/unix/sysv/linux/arm/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/generic/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/hppa/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/ia64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/mips/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/connect.c: Simplify include list.
	* sysdeps/unix/sysv/linux/kernel-features.h
	(__ASSUME_CONNECT_SYSCALL): Define.
	* sysdeps/unix/sysv/linux/i386/kernel-features.h
	(__ASSUME_CONNECT_SYSCALL): Undef if kernel does not support it.
	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
	(__ASSUME_CONNECT_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/s390/kernel-features.h
	(__ASSUME_CONNECT_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/sparc/kernel-features.h
	(__ASSUME_CONNECT_SYSCALL): Likewise.
 2017-03-09 15:22:06 +01:00
Adhemerval Zanella
01061a7cab Consolidate Linux accept implementation 
This patch consolidates the accept Linux syscall implementation on
sysdeps/unix/sysv/linux/accept.c.  The changes are:

  1. Remove accept from auto-generation syscalls.list on the architecture
     that uses __NR_accept.
  2. Define __NR_accept as default (__ASSUME_ACCEPT_SYSCALL) and undef for
     architectures that do not support it.
  3. Remove __ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL and decide to use
     __NR_accept4 for accept generation based on __ASSUME_ACCEPT4_SYSCALL.

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
aarch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.

	* sysdeps/unix/sysv/linux/accept.c (__libc_accept): Replace
	__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL by __ASSUME_ACCEPT4_SYSCALL.
	* sysdeps/unix/sysv/linux/alpha/syscalls.list: Remove accept from
	auto-generation list.
	* sysdeps/unix/sysv/linux/arm/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/generic/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/hppa/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/ia64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/mips/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/i386/kernel-features.h
	(__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Remove define.
	(__ASSUME_ACCEPT_SYSCALL): Undefine.
	* sysdeps/unix/sysv/linux/kernel-features.h
	(__ASSUME_ACCEPT_SYSCALL): New define.
	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
	(__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Remove define.
	(__ASSUME_ACCEPT_SYSCALL): Define wheter kernel version supports.
	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	(__ASSUME_ACCEPT_SYSCALL): Define.
	* sysdeps/unix/sysv/linux/powerpc/kernel-features.h
	(__ASSUME_ACCEPT_SYSCALL): Undefine.
	* sysdeps/unix/sysv/linux/s390/kernel-features.h
	(__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Remove define.
	(__ASSUME_ACCEPT_SYSCALL): Undefine.
	* sysdeps/unix/sysv/linux/sh/kernel-features.h
	(__ASSUME_ACCEPT_SYSCALL): Undefine.
	* sysdeps/unix/sysv/linux/sparc/kernel-features.h
	(__ASSUME_ACCEPT_SYSCALL): Undefine for 32 bits.
 2017-03-09 15:22:06 +01:00
Joseph Myers
bfff8b1bec Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
Joseph Myers
423c2b9d08 Add fromfp functions. 
TS 18661-1 defines fromfp functions (fromfp, fromfpx, ufromfp,
ufromfpx, and float and long double variants) to convert from
floating-point to an integer type with any signedness and any given
width up to that of intmax_t, in any of the five IEEE rounding modes
(the usual four for binary floating point, plus rounding to nearest
with ties rounding away from zero), with control of whether in-range
non-integer values should result in the "inexact" exception being
raised.  This patch implements these functions for glibc.

These implementations are (apart from raising exceptions) pure integer
implementations; it's entirely possible optimized versions could be
devised for some architectures.  A common math/fromfp.h header
provides various common helper code that can readily be shared between
the implementations for different types.  For each type, the bulk of
the implementation is also shared between the four functions, with
wrappers that define UNSIGNED and INEXACT macros appropriately before
including the main implementation.

As the functions return intmax_t and uintmax_t without math.h being
allowed to expose those typedef names, they are declared using
__intmax_t and __uintmax_t as obtained from <bits/types.h>.

The FP_INT_* rounding direction macros are defined as ascending
integers in the order the names are listed in the TS; I see no
significant value in allowing architectures to vary the values of
them.

The libm-test machinery is duly adapted to handle unsigned int
arguments, and intmax_t and uintmax_t results.  Because each test
input is generally tested for four functions, five rounding modes and
several different widths, the libm-test.inc additions are very large.
Thus, the diffs in the body of this message exclude the libm-test.inc
changes, with the full patch being attached gzipped.  The bulk of the
new tests were generated (expanded from a test input plus rounding
results and information about where it lies in the relevant interval
between integers, to libm-test tests for all relevant combinations of
function, rounding direction and width) by a script that's included in
the patch as math/gen-fromfp-tests.py (input data
math/gen-fromfp-tests-inputs); as an ad hoc script that's not really
expected to be rerun, it's not very polished, but it's at least
plausibly useful for adding any further tests for these functions in
future.  I may split the libm-test tests up by function in future (so
both libm-test.inc and auto-libm-test-out are split into separate
files, and the tests for each function are also built and run
separately), but not for 2.25.

For no obvious reason, adding tgmath tests for the new functions
resulted in -Wuninitialized errors from test-tgmath.c about the
variable i being used uninitialized.  Those errors were correct - the
variable is read by the frexp version in test-tgmath.c (where real
frexp would write through that pointer instead of reading it) - but I
don't know why this patch would result in the pre-existing issue being
newly detected.  The patch initializes the variable to avoid those
errors.

With these changes, glibc 2.25 should have all the library features
from TS 18661-1 other than the functions that round result to narrower
type (and constant rounding directions, but I'm considering those
mainly a compiler feature not a library one).

Tested for x86_64, x86, mips64 and powerpc.

	* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(fromfp): New declaration.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (fromfpx): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (ufromfp): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (ufromfpx): Likewise.
	* math/tgmath.h (__TGMATH_TERNARY_FIRST_REAL_RET_ONLY): New macro.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (fromfp): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (ufromfp): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (fromfpx): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (ufromfpx): Likewise.
	* math/math.h: Include <bits/types.h>.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FP_INT_UPWARD): New enum
	constant and macro.
	(FP_INT_DOWNWARD): Likewise.
	(FP_INT_TOWARDZERO): Likewise.
	(FP_INT_TONEARESTFROMZERO): Likewise.
	(FP_INT_TONEAREST): Likewise.
	* math/Versions (fromfp): New libm symbol at version GLIBC_2.25.
	(fromfpf): Likewise.
	(fromfpl): Likewise.
	(ufromfp): Likewise.
	(ufromfpf): Likewise.
	(ufromfpl): Likewise.
	(fromfpx): Likewise.
	(fromfpxf): Likewise.
	(fromfpxl): Likewise.
	(ufromfpx): Likewise.
	(ufromfpxf): Likewise.
	(ufromfpxl): Likewise.
	* math/Makefile (libm-calls): Add s_fromfpF, s_ufromfpF,
	s_fromfpxF and s_ufromfpxF.
	* math/gen-fromfp-tests.py: New file.
	* math/gen-fromfp-tests-inputs: Likewise.
	* math/libm-test.inc: Include <stdint.h>
	(check_intmax_t): New function.
	(check_uintmax_t): Likewise.
	(struct test_fiu_M_data): New type.
	(struct test_fiu_U_data): Likewise.
	(RUN_TEST_fiu_M): New macro.
	(RUN_TEST_LOOP_fiu_M): Likewise.
	(RUN_TEST_fiu_U): Likewise.
	(RUN_TEST_LOOP_fiu_U): Likewise.
	(fromfp_test_data): New array.
	(fromfp_test): New function.
	(fromfpx_test_data): New array.
	(fromfpx_test): New function.
	(ufromfp_test_data): New array.
	(ufromfp_test): New function.
	(ufromfpx_test_data): New array.
	(ufromfpx_test): New function.
	(main): Call fromfp_test, fromfpx_test, ufromfp_test and
	ufromfpx_test.
	* math/gen-libm-test.pl (parse_args): Handle u, M and U descriptor
	characters.
	* math/test-tgmath-ret.c: Include <stdint.h>.
	(rm): New variable.
	(width): Likewise.
	(CHECK_RET_CONST_TYPE): Take extra arguments and pass them to
	called function.
	(CHECK_RET_CONST_FLOAT): Take extra arguments and pass them to
	CHECK_RET_CONST_TYPE.
	(CHECK_RET_CONST_DOUBLE): Likewise.
	(CHECK_RET_CONST_LDOUBLE): Likewise.
	(CHECK_RET_CONST): Take extra arguments and pass them to calls
	macros.
	(fromfp): New CHECK_RET_CONST call.
	(ufromfp): Likewise.
	(fromfpx): Likewise.
	(ufromfpx): Likewise.
	(do_test): Call check_return_fromfp, check_return_ufromfp,
	check_return_fromfpx and check_return_ufromfpx.
	* math/test-tgmath.c: Include <stdint.h>
	(NCALLS): Increase to 138.
	(F(compile_test)): Initialize i.  Call fromfp functions.
	(F(fromfp)): New function.
	(F(fromfpx)): Likewise.
	(F(ufromfp)): Likewise.
	(F(ufromfpx)): Likewise.
	* manual/arith.texi (Rounding Functions): Document FP_INT_UPWARD,
	FP_INT_DOWNWARD, FP_INT_TOWARDZERO, FP_INT_TONEARESTFROMZERO,
	FP_INT_TONEAREST, fromfp, fromfpf, fromfpl, ufromfp, ufromfpf,
	ufromfpl, fromfpx, fromfpxf, fromfpxl, ufromfpx, ufromfpxf and
	ufromfpxl.
	* manual/libm-err-tab.pl (@all_functions): Add fromfp, fromfpx,
	ufromfp and ufromfpx.
	* math/fromfp.h: New file.
	* sysdeps/ieee754/dbl-64/s_fromfp.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_fromfp_main.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_fromfpx.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_ufromfp.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_ufromfpx.c: Likewise.
	* sysdeps/ieee754/flt-32/s_fromfpf.c: Likewise.
	* sysdeps/ieee754/flt-32/s_fromfpf_main.c: Likewise.
	* sysdeps/ieee754/flt-32/s_fromfpxf.c: Likewise.
	* sysdeps/ieee754/flt-32/s_ufromfpf.c: Likewise.
	* sysdeps/ieee754/flt-32/s_ufromfpxf.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_fromfpl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_fromfpl_main.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_fromfpxl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_ufromfpl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_ufromfpxl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_fromfpl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_fromfpl_main.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_fromfpxl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_ufromfpl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_ufromfpxl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_fromfpl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_fromfpl_main.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_fromfpxl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_ufromfpl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_ufromfpxl.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add fromfp,
	ufromfp, fromfpx and ufromfpx.
	(CFLAGS-nldbl-fromfp.c): New variable.
	(CFLAGS-nldbl-fromfpx.c): Likewise.
	(CFLAGS-nldbl-ufromfp.c): Likewise.
	(CFLAGS-nldbl-ufromfpx.c): Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-compat.h: Include <stdint.h>.
	* sysdeps/ieee754/ldbl-opt/nldbl-fromfp.c: New file.
	* sysdeps/ieee754/ldbl-opt/nldbl-fromfpx.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-ufromfp.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-ufromfpx.c: Likewise.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
 2016-12-31 00:40:59 +00:00
Adhemerval Zanella
38cee35b0c Consolidate Linux semtimedop implementation 
This patch consolidates the semtimedop Linux implementation in only
one default file, sysdeps/unix/sysv/linux/semtimedop.c.  If tries to use
the direct syscall if it is supported, otherwise will use the old ipc
multiplex mechanism.

Checked on x86_64, i686, powerpc64le, aarch64, and armhf.

	* sysdeps/unix/sysv/linux/alpha/syscalls.list (semtimedop): Remove.
	* sysdeps/unix/sysv/linux/arm/syscalls.list (semtimedop): Likewise.
	* sysdeps/unix/sysv/linux/generic/syscalls.list (semtimedop):
	Likewise.
	* sysdeps/unix/sysv/linux/hppa/syscalls.list (semtimedop): Likewise.
	* sysdeps/unix/sysv/linux/ia64/syscalls.list (semtimedop): Likewise.
	* sysdeps/unix/sysv/linux/microblaze/syscalls.list (semtimedop):
	Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/syscalls.list (semtimedop):
	Likewise.
	* sysdeps/unix/sysv/linux/x86_64/syscalls.list (semtimedop): Likewise.
	* sysdeps/unix/sysv/linux/m68k/semtimedop.S: Remove file.
	* sysdeps/unix/sysv/linux/s390/semtimedop.c: Reorganize headers and
	add a comment about s390 syscall difference from default one.
	* sysdeps/unix/sysv/linux/semtimedop.c (semtimedop): Use semtimedop
	syscall if it is defined.
 2016-12-28 20:31:04 -02:00
Adhemerval Zanella
63719cf1e3 Add __ASSUME_DIRECT_SYSVIPC_SYSCALL for Linux 
On current minimum supported kernels, the SysV IPC on Linux is provided
by either the ipc syscalls or correspondent wire syscalls.  Also, for
architectures that supports wire syscalls all syscalls are supported
in a set (msgct, msgrcv, msgsnd, msgget, semctl, semget, semop, semtimedop,
shmctl, shmat, shmget, shmdt).

The architectures that only supports ipc syscall are:

  - i386, m68k, microblaze, mips32, powerpc (powerpc32, powerpc64, and
    powerpc64le), s390 (32 and 64 bits), sh, sparc32, and sparc64.

And the architectures that only supports wired syscalls are:

  - aarch64, alpha, hppa, ia64, mips64, mips64n32, nios2, tile
    (tilepro, tilegx, and tilegx64), and x86_64

Also arm is the only one that supports both wire syscalls and the
ipc, although the ipc one is deprecated.

This patch adds a new define, __ASSUME_DIRECT_SYSVIPC_SYSCALL, that wired
syscalls are supported on the system and the general idea is to use
it where possible.

I also checked the syscall table for all architectures on Linux 4.9
and there is no change on described support for Linux 2.6.32/3.2.

	* sysdeps/unix/sysv/linux/kernel-features.h
	(__ASSUME_DIRECT_SYSVIPC_SYSCALL): New define.
	* sysdeps/unix/sysv/linux/i386/kernel-features.h
	(__ASSUME_DIRECT_SYSVIPC_SYSCALL): Undef.
	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
	(__ASSUME_DIRECT_SYSVIPC_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/mips/kernel-features.h
	(__ASSUME_DIRECT_SYSVIPC_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/kernel-features.h
	(__ASSUME_DIRECT_SYSVIPC_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/s390/kernel-features.h
	(__ASSUME_DIRECT_SYSVIPC_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/sh/kernel-features.h
	(__ASSUME_DIRECT_SYSVIPC_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/sparc/kernel-features.h
	(__ASSUME_DIRECT_SYSVIPC_SYSCALL): Likewise.
 2016-12-28 20:28:56 -02:00
Joseph Myers
41c67149b9 Add roundeven, roundevenf, roundevenl. 
TS 18661-1 defines roundeven functions that round a floating-point
number to the nearest integer, in that floating-point type, with ties
rounding to even (whereas the round functions round ties away from
zero).  As with other such functions, they raise no exceptions apart
from "invalid" for signaling NaNs.  There was a previous user request
for this functionality in glibc in
<https://sourceware.org/ml/libc-help/2015-02/msg00005.html>.

This patch implements these functions for glibc.  The implementations
use integer bit-manipulation (or roundeven on the high and low parts,
in the IBM long double case).  It's possible that there may be faster
approaches on some architectures (in particular, on AArch64 the frintn
instruction should do exactly what's required); I'll leave it to
architecture maintainers or others interested to implement such
architecture-specific versions if desired.  (Where architectures have
instructions to round to nearest integer in the current rounding mode,
implementations saving and restoring the rounding mode - and dealing
with exceptions if those instructions generate "inexact" - are also
possible, though their performance depends on the cost of manipulating
exceptions / rounding mode state.)

Tested for x86_64, x86, mips64 and powerpc.

	* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(roundeven): New declaration.
	* math/tgmath.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (roundeven): New
	macro.
	* math/Versions (roundeven): New libm symbol at version
	GLIBC_2.25.
	(roundevenf): Likewise.
	(roundevenl): Likewise.
	* math/Makefile (libm-calls): Add s_roundevenF.
	* math/libm-test.inc (roundeven_test_data): New array.
	(roundeven_test): New function.
	(main): Call roundeven_test.
	* math/test-tgmath.c (NCALLS): Increase to 134.
	(F(compile_test)): Call roundeven.
	(F(roundeven)): New function.
	* manual/arith.texi (Rounding Functions): Document roundeven,
	roundevenf and roundevenl.
	* manual/libm-err-tab.pl (@all_functions): Add roundeven.
	* include/math.h (roundeven): Use libm_hidden_proto.
	* sysdeps/ieee754/dbl-64/s_roundeven.c: New file.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_roundeven.c: Likewise.
	* sysdeps/ieee754/flt-32/s_roundevenf.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_roundevenl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_roundevenl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_roundevenl.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add
	roundeven.
	(CFLAGS-nldbl-roundeven.c): New variable.
	* sysdeps/ieee754/ldbl-opt/nldbl-roundeven.c: New file.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
 2016-12-21 01:48:27 +00:00
Joseph Myers
525f803984 Add fmaxmag, fminmag functions. 
TS 18661-1 defines fmaxmag and fminmag functions that return the
argument with maximum / minimum magnitude (acting like fmax / fmin if
the arguments have the same magnitude or either argument is a NaN).
These correspond to the IEEE 754-2008 operations maxNumMag and
minNumMag.  This patch implements these functions for glibc.  They are
implemented with type-generic templates.  Tests are based on those for
fmax and fmin.

Tested for x86_64, x86, mips64 and powerpc.

	* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(fmaxmag): New declaration.
	(fminmag): Likewise.
	* math/tgmath.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (fmaxmag): New
	macro.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (fminmag): Likewise.
	* math/Versions (fmaxmag): New libm symbol at version GLIBC_2.25.
	(fmaxmagf): Likewise.
	(fmaxmagl): Likewise.
	(fminmag): Likewise.
	(fminmagf): Likewise.
	(fminmagl): Likewise.
	* math/Makefile (gen-libm-calls): Add s_fmaxmagF and s_fminmagF.
	* math/s_fmaxmag_template.c: New file.
	* math/s_fminmag_template.c: Likewise.
	* math/libm-test.inc (fmaxmag_test_data): New array.
	(fmaxmag_test): New function.
	(fminmag_test_data): New array.
	(fminmag_test): New function.
	(main): Call fmaxmag_test and fminmag_test.
	* math/test-tgmath.c (NCALLS): Increase to 132.
	(F(compile_test)): Call fmaxmag and fminmag.
	(F(fminmag)): New function.
	(F(fmaxmag)): Likewise.
	* manual/arith.texi (Misc FP Arithmetic): Document fminmag,
	fminmagf, fminmagl, fmaxmag, fmaxmagf and fmaxmagl.
	* manual/libm-err-tab.pl (@all_functions): Add fmaxmag and
	fminmag.
	* sysdeps/ieee754/ldbl-opt/nldbl-fmaxmag.c: New file.
	* sysdeps/ieee754/ldbl-opt/nldbl-fminmag.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/s_fmaxmagl.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/s_fminmagl.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add fmaxmag
	and fminmag.
	(CFLAGS-nldbl-fmaxmag.c): New variable.
	(CFLAGS-nldbl-fminmag.c): Likewise.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
 2016-12-20 00:46:53 +00:00
Zack Weinberg
ea1bd74def New string function explicit_bzero (from OpenBSD). 
explicit_bzero(s, n) is the same as memset(s, 0, n), except that the
compiler is not allowed to delete a call to explicit_bzero even if the
memory pointed to by 's' is dead after the call.  Right now, this effect
is achieved externally by having explicit_bzero be a function whose
semantics are unknown to the compiler, and internally, with a no-op
asm statement that clobbers memory.  This does mean that small
explicit_bzero operations cannot be expanded inline as small memset
operations can, but on the other hand, small memset operations do get
deleted by the compiler.  Hopefully full compiler support for
explicit_bzero will happen relatively soon.

There are two new tests: test-explicit_bzero.c verifies the
visible semantics in the same way as the existing test-bzero.c,
and tst-xbzero-opt.c verifies the not-being-optimized-out property.
The latter is conceptually based on a test written by Matthew Dempsky
for the OpenBSD regression suite.

The crypt() implementation has an immediate use for this new feature.
We avoid having to add a GLIBC_PRIVATE alias for explicit_bzero
by running all of libcrypt's calls through the fortified variant,
__explicit_bzero_chk, which is in the impl namespace anyway.  Currently
I'm not aware of anything in libc proper that needs this, but the
glue is all in place if it does become necessary.  The legacy DES
implementation wasn't bothering to clear its buffers, so I added that,
mostly for consistency's sake.

	* string/explicit_bzero.c: New routine.
	* string/test-explicit_bzero.c, string/tst-xbzero-opt.c: New tests.
	* string/Makefile (routines, strop-tests, tests): Add them.
	* string/test-memset.c: Add ifdeffage for testing explicit_bzero.
	* string/string.h [__USE_MISC]: Declare explicit_bzero.

	* debug/explicit_bzero_chk.c: New routine.
	* debug/Makefile (routines): Add it.
	* debug/tst-chk1.c: Test fortification of explicit_bzero.
	* string/bits/string3.h: Fortify explicit_bzero.

	* manual/string.texi: Document explicit_bzero.
	* NEWS: Mention addition of explicit_bzero.

	* crypt/crypt-entry.c (__crypt_r): Clear key-dependent intermediate
	data before returning, using explicit_bzero.
	* crypt/md5-crypt.c (__md5_crypt_r): Likewise.
	* crypt/sha256-crypt.c (__sha256_crypt_r): Likewise.
	* crypt/sha512-crypt.c (__sha512_crypt_r): Likewise.

	* include/string.h: Redirect internal uses of explicit_bzero
	to __explicit_bzero_chk[_internal].
	* string/Versions [GLIBC_2.25]: Add explicit_bzero.
	* debug/Versions [GLIBC_2.25]: Add __explicit_bzero_chk.
	* sysdeps/arm/nacl/libc.abilist
	* sysdeps/unix/sysv/linux/aarch64/libc.abilist
	* sysdeps/unix/sysv/linux/alpha/libc.abilist
	* sysdeps/unix/sysv/linux/arm/libc.abilist
	* sysdeps/unix/sysv/linux/hppa/libc.abilist
	* sysdeps/unix/sysv/linux/i386/libc.abilist
	* sysdeps/unix/sysv/linux/ia64/libc.abilist
	* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
	* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
	* sysdeps/unix/sysv/linux/microblaze/libc.abilist
	* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
	* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
	* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
	* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
	* sysdeps/unix/sysv/linux/nios2/libc.abilist
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
	* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
	* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
	* sysdeps/unix/sysv/linux/sh/libc.abilist
	* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
	* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist
	* sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist
	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist:
	Add entries for explicit_bzero and __explicit_bzero_chk.
 2016-12-16 16:21:54 -05:00
Florian Weimer
92dcaa3e2f Add getentropy, getrandom, <sys/random.h> [BZ #17252] 2016-12-12 17:28:04 +01:00
Joseph Myers
55a38f8236 Add llogb, llogbf, llogbl. 
TS 18661-1 defines llogb functions that are like ilogb except that
they return long int instead of int.  Corresponding FP_LLOGB* macros
are defined, whose values are required to have the obvious
correspondence to those of the FP_ILOGB* macros.

This patch implements these functions and macros for glibc.  llogb
uses the type-generic infrastructure, with an implementation similar
to the wrapper for ilogb but with additional conversion from FP_ILOGB*
to FP_LLOGB*; this approach avoids needing to modify or duplicate any
of the architecture-specific ilogb implementations.  Tests are also
based on those for ilogb.

Ideally the llogb functions would alias the ilogb ones when long is
32-bit, but such aliasing requires the associated header declarations
of the different-type alias to be hidden, typically by defining macros
before including the header (see e.g. how
sysdeps/ieee754/dbl-64/wordsize-64/s_llround.c defines lround to
__hidden_lround before including <math.h>).  The infrastructure for
type-generic function implementations does not support defining such
macros at present (since C code can't define a macro whose name is
determined by other macros).  So this patch leaves them as separate
functions (similar to e.g. scalbln and scalbn being separate in such a
case as well), but with the remapping of FP_ILOGB* to FP_LLOGB*
conditioned out in the case where it would be the identity map.

Tested for x86_64, x86, mips64 and powerpc.

	* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (llogb):
	New declaration.
	* math/tgmath.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (llogb): New
	macro.
	* math/math.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (__FP_LONG_MAX):
	New macro.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FP_LLOGB0): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FP_LLOGBNAN): Likewise.
	* math/Versions (llogb): New libm symbol at version GLIBC_2.25.
	(llogbf): Likewise.
	(llogbl): Likewise.
	* math/Makefile (gen-libm-calls): Add w_llogbF.
	(tests): Add test-fp-llogb-constants.
	* math/w_llogb_template.c: New file.  Based on
	math/w_ilogb_template.c.
	* math/libm-test.inc (llogb_test_data): New array.
	(llogb_test): New function.
	(main): Call llogb_test.
	* math/test-fp-llogb-constants.c: New file.  Based on
	math/test-fp-ilogb-constants.c.
	* math/test-tgmath-ret.c (llogb): New CHECK_RET_CONST call.
	(do_test): Call check_return_llogb.
	* math/test-tgmath.c (NCALLS): Increase to 126.
	(F(compile_test)): Call llogb.
	(F(llogb)): New function.
	* manual/math.texi (Exponents and Logarithms): Document llogb,
	llogbf, llogbl, FP_LLOGB0 and FP_LLOGBNAN.
	* manual/libm-err-tab.pl (@all_functions): Add llogb.
	* sysdeps/ieee754/ldbl-opt/nldbl-llogb.c: New file.
	* sysdeps/ieee754/ldbl-opt/w_llogbl.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add llogb.
	(CFLAGS-nldbl-llogb.c): New variable.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
 2016-12-02 01:42:49 +00:00
Florian Weimer
b04beebf07 ld.so: Remove __libc_memalign 
It is no longer needed since commit 6c444ad6e9
(elf: Do not use memalign for TCB/TLS blocks allocation [BZ #17730]).
Applications do not link against ld.so and will use the definition in
libc.so, so there is no ABI impact.
 2016-11-30 16:23:58 +01:00
Florian Weimer
9e78f6f6e7 Implement _dl_catch_error, _dl_signal_error in libc.so [BZ #16628] 
This change moves the main implementation of _dl_catch_error,
_dl_signal_error to libc.so, where TLS variables can be used
directly.  This removes a writable function pointer from the
rtld_global variable.

For use during initial relocation, minimal implementations of these
functions are provided in ld.so.  These are eventually interposed
by the libc.so implementations.  This is implemented by compiling
elf/dl-error-skeleton.c twice, via elf/dl-error.c and
elf/dl-error-minimal.c.

As a side effect of this change, the static version of dl-error.c
no longer includes support for the
_dl_signal_cerror/_dl_receive_error mechanism because it is only
used in ld.so.
 2016-11-30 15:59:57 +01:00
Joseph Myers
457663a7cd Add setpayloadsig, setpayloadsigf, setpayloadsigl. 
TS 18661-1 defines functions for manipulating the payloads of NaNs.
This patch implements the setpayloadsig functions for glibc; these are
like the setpayload functions, but produce a signaling NaN instead of
a quiet NaN.

The substance of the implementation was included with the setpayload
implementation, so the new files here just need to wrap the main files
with different defines to build the new functions.

Because the functions store a signaling NaN via a pointer and the
libm-test macros choose a suitable initial value for the variable in
such a case by comparing with the expected value, the relevant macro
needs to clear exceptions after FE_INVALID may have been raised by
that comparison.

Tested for x86_64, x86, mips64 and powerpc.

	* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(setpayloadsig): New declaration.
	* math/Versions (setpayloadsig): New libm symbol at version
	GLIBC_2.25.
	(setpayloadsigf): Likewise.
	(setpayloadsigl): Likewise.
	* math/Makefile (libm-calls): Add s_setpayloadsigF.
	* math/libm-test.inc (RUN_TEST_Ff_b1): Call feclearexcept
	(FE_ALL_EXCEPT) after initializing EXTRA_VAR.
	(setpayloadsig_test_data): New array.
	(setpayloadsig_test): New function.
	(main): Call setpayloadsig_test.
	* manual/arith.texi (FP Bit Twiddling): Document setpayloadsig,
	setpayloadsigf and setpayloadsigl.
	* manual/libm-err-tab.pl: Update comment on interfaces without
	ulps tabulated.
	* sysdeps/ieee754/dbl-64/s_setpayloadsig.c: New file.
	* sysdeps/ieee754/flt-32/s_setpayloadsigf.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_setpayloadsigl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_setpayloadsigl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_setpayloadsigl.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-setpayloadsig.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add
	setpayloadsig.
	(CFLAGS-nldbl-setpayloadsig.c): New variable.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
 2016-11-24 23:56:48 +00:00
Adhemerval Zanella
c579f48edb Remove cached PID/TID in clone 
This patch remove the PID cache and usage in current GLIBC code.  Current
usage is mainly used a performance optimization to avoid the syscall,
however it adds some issues:

  - The exposed clone syscall will try to set pid/tid to make the new
    thread somewhat compatible with current GLIBC assumptions.  This cause
    a set of issue with new workloads and usecases (such as BZ#17214 and
    [1]) as well for new internal usage of clone to optimize other algorithms
    (such as clone plus CLONE_VM for posix_spawn, BZ#19957).

  - The caching complexity also added some bugs in the past [2] [3] and
    requires more effort of each port to handle such requirements (for
    both clone and vfork implementation).

  - Caching performance gain in mainly on getpid and some specific
    code paths.  The getpid performance leverage is questionable [4],
    either by the idea of getpid being a hotspot as for the getpid
    implementation itself (if it is indeed a justifiable hotspot a
    vDSO symbol could let to a much more simpler solution).

    Other usage is mainly for non usual code paths, such as pthread
    cancellation signal and handling.

For thread creation (on stack allocation) the code simplification in fact
adds some performance gain due the no need of transverse the stack cache
and invalidate each element pid.

Other thread usages will require a direct getpid syscall, such as
cancellation/setxid signal, thread cancellation, thread fail path (at
create_thread), and thread signal (pthread_kill and pthread_sigqueue).
However these are hardly usual hotspots and I think adding a syscall is
justifiable.

It also simplifies both the clone and vfork arch-specific implementation.
And by review each fork implementation there are some discrepancies that
this patch also solves:

  - microblaze clone/vfork does not set/reset the pid/tid field
  - hppa uses the default vfork implementation that fallback to fork.
    Since vfork is deprecated I do not think we should bother with it.

The patch also removes the TID caching in clone. My understanding for
such semantic is try provide some pthread usage after a user program
issue clone directly (as done by thread creation with CLONE_PARENT_SETTID
and pthread tid member).  However, as stated before in multiple discussions
threads, GLIBC provides clone syscalls without further supporting all this
semantics.

I ran a full make check on x86_64, x32, i686, armhf, aarch64, and powerpc64le.
For sparc32, sparc64, and mips I ran the basic fork and vfork tests from
posix/ folder (on a qemu system).  So it would require further testing
on alpha, hppa, ia64, m68k, nios2, s390, sh, and tile (I excluded microblaze
because it is already implementing the patch semantic regarding clone/vfork).

[1] https://codereview.chromium.org/800183004/
[2] https://sourceware.org/ml/libc-alpha/2006-07/msg00123.html
[3] https://sourceware.org/bugzilla/show_bug.cgi?id=15368
[4] http://yarchive.net/comp/linux/getpid_caching.html

	* sysdeps/nptl/fork.c (__libc_fork): Remove pid cache setting.
	* nptl/allocatestack.c (allocate_stack): Likewise.
	(__reclaim_stacks): Likewise.
	(setxid_signal_thread): Obtain pid through syscall.
	* nptl/nptl-init.c (sigcancel_handler): Likewise.
	(sighandle_setxid): Likewise.
	* nptl/pthread_cancel.c (pthread_cancel): Likewise.
	* sysdeps/unix/sysv/linux/pthread_kill.c (__pthread_kill): Likewise.
	* sysdeps/unix/sysv/linux/pthread_sigqueue.c (pthread_sigqueue):
	Likewise.
	* sysdeps/unix/sysv/linux/createthread.c (create_thread): Likewise.
	* sysdeps/unix/sysv/linux/getpid.c: Remove file.
	* nptl/descr.h (struct pthread): Change comment about pid value.
	* nptl/pthread_getattr_np.c (pthread_getattr_np): Remove thread
	pid assert.
	* sysdeps/unix/sysv/linux/pthread-pids.h (__pthread_initialize_pids):
	Do not set pid value.
	* nptl_db/td_ta_thr_iter.c (iterate_thread_list): Remove thread
	pid cache check.
	* nptl_db/td_thr_validate.c (td_thr_validate): Likewise.
	* sysdeps/aarch64/nptl/tcb-offsets.sym: Remove pid offset.
	* sysdeps/alpha/nptl/tcb-offsets.sym: Likewise.
	* sysdeps/arm/nptl/tcb-offsets.sym: Likewise.
	* sysdeps/hppa/nptl/tcb-offsets.sym: Likewise.
	* sysdeps/i386/nptl/tcb-offsets.sym: Likewise.
	* sysdeps/ia64/nptl/tcb-offsets.sym: Likewise.
	* sysdeps/m68k/nptl/tcb-offsets.sym: Likewise.
	* sysdeps/microblaze/nptl/tcb-offsets.sym: Likewise.
	* sysdeps/mips/nptl/tcb-offsets.sym: Likewise.
	* sysdeps/nios2/nptl/tcb-offsets.sym: Likewise.
	* sysdeps/powerpc/nptl/tcb-offsets.sym: Likewise.
	* sysdeps/s390/nptl/tcb-offsets.sym: Likewise.
	* sysdeps/sh/nptl/tcb-offsets.sym: Likewise.
	* sysdeps/sparc/nptl/tcb-offsets.sym: Likewise.
	* sysdeps/tile/nptl/tcb-offsets.sym: Likewise.
	* sysdeps/x86_64/nptl/tcb-offsets.sym: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/clone.S: Remove pid and tid caching.
	* sysdeps/unix/sysv/linux/alpha/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/arm/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/hppa/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/ia64/clone2.S: Likewise.
	* sysdeps/unix/sysv/linux/mips/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/nios2/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/sh/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/tile/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/vfork.S: Remove pid set and reset.
	* sysdeps/unix/sysv/linux/alpha/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/arm/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/ia64/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/m68k/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/m68k/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/mips/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/nios2/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/sh/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/tile/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/tst-clone2.c (f): Remove direct pthread
	struct access.
	(clone_test): Remove function.
	(do_test): Rewrite to take in consideration pid is not cached anymore.
 2016-11-24 19:38:51 -02:00
Joseph Myers
eb3c12c784 Add setpayload, setpayloadf, setpayloadl. 
TS 18661-1 defines functions for manipulating the payloads of NaNs.
This patch implements the setpayload functions for glibc; these set a
number (pointed to by a function argument) to a quiet NaN with the
given payload, or to +0 if the given payload is not valid.  The
implementations are structured to allow the substance of the
implementation to be shared with the setpayloadsig functions when
those are added.

The semantics in the TS are not entirely clear in the case where the
payload passed to the function is zero (see discussion on the WG14
reflector last month).  This patch implements what seems the most
sensible interpretation, that -0 is never valid to give as the
payload, but +0 is valid in the case where the kind of NaN being
generated has its high mantissa bit set so payload 0 is actually
possible in such a NaN.

Tested for x86_64, x86, mips64 and powerpc.

	* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(setpayload): New declaration.
	* math/Versions (setpayload): New libm symbol at version
	GLIBC_2.25.
	(setpayloadf): Likewise.
	(setpayloadl): Likewise.
	* math/Makefile (libm-calls): Add s_setpayloadF.
	* math/libm-test.inc (struct test_Ffp_b1_data): Rename to struct
	test_Ff_b1_data.
	(RUN_TEST_Ff_b1): New macro.
	(RUN_TEST_LOOP_Ff_b1): Likewise.
	(canonicalize_test_data): Update type.
	(setpayload_test_data): New array.
	(setpayload_test): New function.
	(main): Call setpayload_test.
	* manual/arith.texi (FP Bit Twiddling): Document setpayload,
	setpayloadf and setpayloadl.
	* manual/libm-err-tab.pl: Update comment on interfaces without
	ulps tabulated.
	* sysdeps/ieee754/dbl-64/s_setpayload.c: New file.
	* sysdeps/ieee754/dbl-64/s_setpayload_main.c: Likewise.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_setpayload_main.c:
	Likewise.
	* sysdeps/ieee754/flt-32/s_setpayloadf.c: Likewise.
	* sysdeps/ieee754/flt-32/s_setpayloadf_main.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_setpayloadl.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_setpayloadl_main.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_setpayloadl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_setpayloadl_main.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_setpayloadl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_setpayloadl_main.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-setpayload.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add
	setpayload.
	(CFLAGS-nldbl-setpayload.c): New variable.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
 2016-11-19 00:16:28 +00:00
Adhemerval Zanella
045c13d185 Consolidate Linux setrlimit and getrlimit implementation 
This patch consolidates all Linux setrlimit and getrlimit on the default
sysdeps/unix/sysv/linux/{set,get}rlimit{64}.c.  It contains two exceptions:

  1. mips32 and mips64n32 which requires a versioned symbol for GLIBC 2.19
     and higher due a broken RLIM64_INFINITY constant.
  2. sparc32 does not define a compat symbol for getrlimit64 for old 2GB
     limit. I am not sure if it is required, but a RLIM_INFINITY fix [1]
     change its definition without adding a compat symbol.  This patch does
     not aim to address this possible issue, it follow current symbol
     export.

The default implementation uses prlimit64 for 64 bit rlim_t ({set,get}rlimit64)
and if it fails with ENOSYS it fall back to {get,set}rlimit syscall.  This
code path is only used on kernel older than 2.6.36 (basically now only x86)
and I avoid to user __ASSUME_PRLIMTI64 to simplify the implementation.  Once
x86 moves to be on par with other architectures regarding minimum kernel
supported we can get rid of using old syscalls and default path.

A new type size define is added, __RLIM_T_MATCHES_RLIM64_T, where is set as
default for 64 bits ports.  This allows the default implementation to avoid
{get,set}rlimit building and alias {get,set}rlimit64 to {get,set}rlimit.

Checked on x86_64, i386, armhf, aarch64, and powerpc64le.  I also did a
sanity build plus check-abi on all other supported architectures.

[1] Commit 9c96ff2385

	Adhemerval Zanella  <adhemerval.zanella@linaro.org>
	Yury Norov  <ynorov@caviumnetworks.com>

	* bits/typesizes.h (__RLIM_T_MATCHES_RLIM64_T): define.
	* sysdeps/unix/sysv/linux/alpha/bits/typesizes.h
	(__RLIM_T_MATCHES_RLIM64_T): Likewise.
	* sysdeps/unix/sysv/linux/generic/bits/typesizes.h
	(__RLIM_T_MATCHES_RLIM64_T): Likewise.
	* sysdeps/unix/sysv/linux/s390/bits/typesizes.h [__s390x__]
	(__RLIM_T_MATCHES_RLIM64_T): Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/typesizes.h
	[__arch64__ || __sparcv9] (__RLIM_T_MATCHES_RLIM64_T): Likewise.
	* sysdeps/unix/sysv/linux/x86/bits/typesizes.h [__86_64__]
	(__RLIM_T_MATCHES_RLIM64_T): Likewise.
	* sysdeps/unix/sysv/linux/arm/Makefile [$(subdir) = resource]
	(sysdep_routines): Remove oldgetrlimit64.
	* sysdeps/unix/sysv/linux/i386/Makefile [$(subdir) = resource]
	(sysdep_routines): Likewise.
	* sysdeps/unix/sysv/linux/m68k/Makefile [$(subdir) = resource]
	(sysdep_routines): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/Makefile
	[$(subdir) = resource] (sysdep_routines): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/Makefile
	[$(subdir) = resource] (sysdep_routines): Likewise.
	* sysdeps/unix/sysv/linux/arm/getrlimit64.c: Remove file.
	* sysdeps/unix/sysv/linux/arm/oldgetrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/hppa/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/oldgetrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/oldgetrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/oldgetrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/oldgetrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/setrlimit64.c: Likewise.
	* sysdeps/sysv/linux/generic/wordsize-32/syscalls.list: Remove
	setrlimit and getrlimit.
	* sysdeps/unix/sysv/linux/hppa/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/i386/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/getrlimit.c: New file.
	* sysdeps/unix/sysv/linux/sparc/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/setrlimit.c: Likewise.
	* sysdeps/unix/sysv/linux/getrlimit64.c (__getrlimit64): Handle
	__RLIM_T_MATCHES_RLIM64_T and add alias if defined.
	(__old_getrlimit64): Add compatibility symbol.
	* sysdeps/unix/sysv/linux/setrlimit64.c (__setrlimit): Likewise.
 2016-11-17 15:54:22 -02:00
Joseph Myers
eaf5ad0bc4 Add canonicalize, canonicalizef, canonicalizel. 
TS 18661-1 defines canonicalize functions to produce a canonical
version of a floating-point representation.  This patch implements
these functions for glibc.

As with the iscanonical macro, these functions are oriented to the
decimal floating-point case, where some values have both canonical and
noncanonical representations.  However, the functions have a return
value that says whether they succeeded in storing a canonical result;
thus, they can fail for the case of an invalid representation (while
still not making any particular choice from among multiple equally
canonical valid representations of the same value).  Since no
floating-point formats in glibc actually have noncanonical valid
representations, a type-generic implementation of these functions can
be used that expects iscanonical to return 0 only for invalid
representations.  Now that iscanonical is used within libm.so,
libm_hidden_proto / libm_hidden_def are added for __iscanonicall.

The definition of these functions is intended to correspond to a
convertFormat operation to the same floating-point format.  Thus, they
convert signaling NaNs to quiet NaNs, raising the "invalid" exception.
Such a conversion "should" produce "the canonical version of that
signaling NaN made quiet".

libm-test.inc is made to check NaN payloads for the output of these
functions, a new feature (at some point manipulation functions such as
fabs and copysign should have tests added that verify payload
preservation for them).  As however some architectures may not follow
the recommended practice of preserving NaN payloads when converting a
signaling NaN to quiet, a new math-tests.h macro
SNAN_TESTS_PRESERVE_PAYLOAD is added, and defined to 0 for non-NAN2008
MIPS; any other architectures seeing test failures for lack of payload
preservation in this case should also define this macro to 0.  (If any
cases arise where the sign isn't preserved either, those should have a
similar macro added.)

The ldbl-96 and ldbl-128ibm tests of iscanonical are renamed and
adapted to test canonicalizel as well on the same representations.

Tested for x86_64, x86, mips64 and powerpc.

	* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(canonicalize): New declaration.
	* math/Versions (canonicalize): New libm symbol at version
	GLIBC_2.25.
	(canonicalizef): Likewise.
	(canonicalizel): Likewise.
	* math/Makefile (gen-libm-calls): Add s_canonicalizeF.
	* math/s_canonicalize_template.c: New file.
	* math/libm-test.inc: Update comment on functions tested and
	testing of NaN payloads.
	(TEST_NAN_PAYLOAD): New macro.
	(NO_TEST_INLINE): Update value.
	(XFAIL_TEST): Likewise.
	(ERRNO_UNCHANGED): Likewise.
	(ERRNO_EDOM): Likewise.
	(ERRNO_ERANGE): Likewise.
	(IGNORE_RESULT): Likewise.
	(NON_FINITE): Likewise.
	(TEST_SNAN): Likewise.
	(NO_TEST_MATHVEC): Likewise.
	(TEST_NAN_PAYLOAD_CANONICALIZE): New macro.
	(check_float_internal): Check NaN payloads if TEST_NAN_PAYLOAD.
	(struct test_Ffp_b1_data): New type.
	(RUN_TEST_Ffp_b1): New macro.
	(RUN_TEST_LOOP_Ffp_b1): Likewise.
	(canonicalize_test_data): New array.
	(canonicalize_test): New function.
	(main): Call canonicalize_test.
	* manual/arith.texi (FP Bit Twiddling): Document canonicalize,
	canonicalizef and canonicalizel.
	* manual/libm-err-tab.pl: Update comment on interfaces without
	ulps tabulated.
	* sysdeps/ieee754/ldbl-opt/nldbl-canonicalize.c: New file.
	* sysdeps/ieee754/ldbl-opt/s_canonicalizel.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add
	canonicalize.
	(CFLAGS-nldbl-canonicalize.c): New variable.
	* sysdeps/ieee754/ldbl-128ibm/test-iscanonical-ldbl-128ibm.c: Move
	to ...
	* sysdeps/ieee754/ldbl-128ibm/test-canonical-ldbl-128ibm.c:
	... here.
	(do_test): Also test canonicalizel.
	* sysdeps/ieee754/ldbl-128ibm/Makefile (tests): Change
	test-iscanonical-ldbl-128ibm to test-canonical-ldbl-128ibm.
	* sysdeps/ieee754/ldbl-128ibm/include/bits/iscanonical.h: New
	file.
	* sysdeps/ieee754/ldbl-128ibm/s_iscanonicall.c (__iscanonicall):
	Use libm_hidden_def.
	* sysdeps/ieee754/ldbl-96/test-iscanonical-ldbl-96.c: Move to ...
	* sysdeps/ieee754/ldbl-96/test-canonical-ldbl-96.c: ... here.
	(do_test): Also test canonicalizel.
	* sysdeps/ieee754/ldbl-96/Makefile (tests): Change
	test-iscanonical-ldbl-96 to test-canonical-ldbl-96.
	* sysdeps/ieee754/ldbl-96/include/bits/iscanonical.h: New file.
	* sysdeps/ieee754/ldbl-96/s_iscanonicall.c (__iscanonicall): Use
	libm_hidden_def.
	* sysdeps/generic/math-tests.h (SNAN_TESTS_PRESERVE_PAYLOAD): New
	macro.
	* sysdeps/mips/math-tests.h [__mips_hard_float && !__mips_nan2008]
	(SNAN_TESTS_PRESERVE_PAYLOAD): Likewise.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
 2016-10-26 23:14:31 +00:00
Gabriel F. T. Gomes
6962682ffe Add strfromd, strfromf, and strfroml functions 
ISO/IEC TS 18661-1 adds several functions in the strfrom family to stdlib.
This patch adds strfromd, strfromf, and strfroml.  This is being done in
preparation for the new floating-point type, float128.  The added functions
convert a floating-point value into a string, with configurable format.
 2016-10-25 17:03:54 -02:00
Joseph Myers
f8e8b8ed9f Add getpayload, getpayloadf, getpayloadl. 
TS 18661-1 defines functions for manipulating the payloads of NaNs.
This patch implements the getpayload functions for glibc; these
extract the NaN payload (from an argument passed as a pointer, for
which corresponding libm-test support is added) and return it in the
same floating-point type.  The return value of these functions is
unspecified for non-NaN arguments; the patch does the simplest thing
to implement, which is that the functions do not check whether the
argument is a NaN and just treat the relevant bits of the
representation as a payload regardless.  A conversion from integer to
floating-point is used to produce the required return value, except in
the ldbl-128 case; as 128-bit integers are not supported for all
configurations using ldbl-128, the code constructs the required
floating-point representation of the return value directly instead.

Tested for x86_64, x86, mips64 and powerpc.

	* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(getpayload): New declaration.
	* math/Versions (getpayload): New libm symbol at version
	GLIBC_2.25.
	(getpayloadf): Likewise.
	(getpayloadl): Likewise.
	* math/Makefile (libm-calls): Add s_getpayloadF.
	* math/libm-test.inc: Include <nan-high-order-bit.h>.
	(struct test_f_f_data): Add comment.
	(RUN_TEST_fp_f): New macro.
	(RUN_TEST_LOOP_fp_f): Likewise.
	(getpayload_test_data): New array.
	(getpayload_test): New function.
	(main): Call getpayload_test.
	* math/gen-libm-test.pl (parse_args): Handle 'p' in argument
	descriptor.
	* manual/arith.texi (FP Bit Twiddling): Document getpayload,
	getpayloadf and getpayloadl.
	* manual/libm-err-tab.pl: Update comment on interfaces without
	ulps tabulated.
	* sysdeps/ieee754/dbl-64/s_getpayload.c: New file.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_getpayload.c: Likewise.
	* sysdeps/ieee754/flt-32/s_getpayloadf.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_getpayloadl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_getpayloadl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_getpayloadl.c: Likewise.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
 2016-10-19 01:49:09 +00:00
Joseph Myers
cc6a8d7457 Add totalordermag, totalordermagf, totalordermagl. 
In addition to the totalorder functions, TS 18661-1 defines
totalordermag functions, which do the same comparison but on the
absolute values of the arguments.  This patch implements these
functions for glibc, including the type-generic macro in <tgmath.h>.
In general the implementations are similar to but simpler than those
for the totalorder functions.

Tested for x86_64, x86, mips64 and powerpc.

	* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(totalordermag): New declaration.
	* math/tgmath.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (totalordermag):
	New macro.
	* math/Versions (totalordermag): New libm symbol at version
	GLIBC_2.25.
	(totalordermagf): Likewise.
	(totalordermagl): Likewise.
	* math/Makefile (libm-calls): Add s_totalordermagF.
	* math/libm-test.inc (totalordermag_test_data): New array.
	(totalordermag_test): New function.
	(main): Call totalordermag_test.
	* math/test-tgmath.c (NCALLS): Increase to 125.
	(F(compile_test)): Call totalordermag.
	(F(totalordermag)): New function.
	* manual/arith.texi (FP Comparison Functions): Document
	totalordermag, totalordermagf and totalordermagl.
	* manual/libm-err-tab.pl: Update comment on interfaces without
	ulps tabulated.
	* sysdeps/ieee754/dbl-64/s_totalordermag.c: New file.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_totalordermag.c: Likewise.
	* sysdeps/ieee754/flt-32/s_totalordermagf.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_totalordermagl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_totalordermagl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_totalordermagl.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-totalordermag.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add
	totalordermag.
	(CFLAGS-nldbl-totalordermag.c): New variable.
	* sysdeps/ieee754/ldbl-128ibm/test-totalorderl-ldbl-128ibm.c
	(do_test): Also test totalordermagl.
	* sysdeps/ieee754/ldbl-96/test-totalorderl-ldbl-96.c (do_test):
	Likewise.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
 2016-10-15 00:36:48 +00:00
Joseph Myers
5e9d98a3d9 Add totalorder, totalorderf, totalorderl. 
TS 18661-1 defines totalorder functions implementing the totalOrder
comparison operation from IEEE 754-2008.  This patch implements these
functions for glibc, including the type-generic macro in <tgmath.h>.
(The totalordermag functions will be added in a separate patch.)

The description of the totalOrder operation is complicated.  However,
for IEEE interchange binary formats and the preferred quiet NaN
convention, what that complicated description means is that you
interpret the representation as a sign-magnitude integer (with -0
coming before +0) and do a <= comparison on that interpretation.  For
finite values and infinities the ordering of the sign-magnitude
integers is just the same as the ordering of floating-point values, so
this extends that to all representations.  (Different representations
of the same floating-point value - which includes same quantum in the
decimal case - must still be considered equal by this operation, but
that issue doesn't arise for IEEE interchange binary formats.)  So the
complications are:

* When MIPS quiet NaN conventions are in use, the representation of
  NaNs needs adjusting before making such an integer comparison.  This
  patch does this adjustment only when both arguments are NaNs, as
  there's no need for it if only one is a NaN, and as long as both are
  NaNs you can just flip the relevant bits without any problems from
  this turning a NaN into an infinity.

* For the m68k version of ldbl-96, where the high mantissa bit is
  "don't care" for infinities and NaNs, representations where it
  differs must compare the same.  Note: although the testcase for this
  compiles, I have not actually tested on m68k.

* For ldbl-128ibm, the low part must be ignored when the high part is
  NaN, and low parts of +0 and -0 must be considered the same whatever
  the high part.

The new tests in libm-test.inc are the first tests there specifying
particular payloads for input NaNs.  Separate tests are also added for
the ldbl-96 and ldbl-128ibm special cases where there are different
representations of the same value that must compare equal (which can't
be covered in libm-test.inc as that only specifies values, not
representations).

Tested for x86_64, x86, mips64 and powerpc.

	* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(totalorder): New declaration.
	* math/tgmath.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (totalorder):
	New macro.
	* math/Versions (totalorder): New libm symbol at version
	GLIBC_2.25.
	(totalorderf): Likewise.
	(totalorderl): Likewise.
	* math/Makefile (libm-calls): Add s_totalorderF.
	* math/gen-libm-test.pl (parse_args): Escape quotes in test name
	string.
	* math/libm-test.inc (PAYLOAD_DIG): New macro.
	(qnan_value_pl): Likewise.
	(snan_value_pl): Likewise.
	(qnan_value): Define using qnan_value_pl.
	(snan_value): Define using snan_value_pl.
	(struct test_ff_i_data): Add comment about which tests use this
	structure.
	(RUN_TEST_ff_b): New macro.
	(RUN_TEST_LOOP_ff_b): Likewise.
	(totalorder_test_data): New array.
	(totalorder_test): New function.
	(main): Call totalorder_test.
	* math/test-tgmath.c (NCALLS): Increase to 122.
	(F(compile_test)): Call totalorder.
	(F(totalorder)): New function.
	* manual/arith.texi (FP Comparison Functions): Document
	totalorder, totalorderf and totalorderl.
	* manual/libm-err-tab.pl: Update comment on interfaces without
	ulps tabulated.
	* sysdeps/ieee754/dbl-64/s_totalorder.c: New file.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_totalorder.c: Likewise.
	* sysdeps/ieee754/flt-32/s_totalorderf.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_totalorderl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_totalorderl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_totalorderl.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-totalorder.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/Makefile (libnldbl-calls): Add
	totalorder.
	(CFLAGS-nldbl-totalorder.c): New variable.
	* sysdeps/ieee754/ldbl-128ibm/test-totalorderl-ldbl-128ibm.c: New
	file.
	* sysdeps/ieee754/ldbl-128ibm/Makefile [$(subdir) = math] (tests):
	Add test-totalorderl-ldbl-128ibm.
	* sysdeps/ieee754/ldbl-96/test-totalorderl-ldbl-96.c: New file.
	* sysdeps/ieee754/ldbl-96/Makefile [$(subdir) = math] (tests): Add
	test-totalorderl-ldbl-96.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
 2016-10-12 01:20:30 +00:00
Joseph Myers
1e7c8fcca5 Add iseqsig. 
TS 18661-1 adds an iseqsig type-generic comparison macro to <math.h>.
This macro is like the == operator except that unordered operands
result in the "invalid" exception and errno being set to EDOM.

This patch implements this macro for glibc.  Given the need to set
errno, this is implemented with out-of-line functions __iseqsigf,
__iseqsig and __iseqsigl (of which the last only exists at all if long
double is ABI-distinct from double, so no function aliases or compat
support are needed).  The present patch ignores excess precision
issues; I intend to deal with those in a followup patch.  (Like
comparison operators, type-generic comparison macros should *not*
convert operands to their semantic types but should preserve excess
range and precision, meaning that for some argument types and values
of FLT_EVAL_METHOD, an underlying function should be called for a
wider type than that of the arguments.)

The underlying functions are implemented with the type-generic
template machinery.  Comparing x <= y && x >= y is sufficient in ISO C
to achieve an equality comparison with "invalid" raised for unordered
operands (and the results of those two comparisons can also be used to
tell whether errno needs to be set).  However, some architectures have
GCC bugs meaning that unordered comparison instructions are used
instead of ordered ones.  Thus, a mechanism is provided for
architectures to use an explicit call to feraiseexcept to raise
exceptions if required.  If your architecture has such a bug you
should add a fix-fp-int-compare-invalid.h header for it, with a
comment pointing to the relevant GCC bug report; if such a GCC bug is
fixed, that header's contents should have a __GNUC_PREREQ conditional
added so that the workaround can eventually be removed for that
architecture.

Tested for x86_64, x86, mips64, arm and powerpc.

	* math/math.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (iseqsig): New
	macro.
	* math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(__iseqsig): New declaration.
	* math/s_iseqsig_template.c: New file.
	* math/Versions (__iseqsigf): New libm symbol at version
	GLIBC_2.25.
	(__iseqsig): Likewise.
	(__iseqsigl): Likewise.
	* math/libm-test.inc (iseqsig_test_data): New array.
	(iseqsig_test): New function.
	(main): Call iseqsig_test.
	* math/Makefile (gen-libm-calls): Add s_iseqsigF.
	* manual/arith.texi (FP Comparison Functions): Document iseqsig.
	* manual/libm-err-tab.pl: Update comment on interfaces without
	ulps tabulated.
	* sysdeps/generic/fix-fp-int-compare-invalid.h: New file.
	* sysdeps/powerpc/fpu/fix-fp-int-compare-invalid.h: Likewise.
	* sysdeps/x86/fpu/fix-fp-int-compare-invalid.h: Likewise.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
 2016-10-06 22:19:38 +00:00
Joseph Myers
29cb929332 Add iscanonical. 
TS 18661-1 adds an iscanonical classification macro to <math.h>.

The motivation for this is decimal floating-point, where some values
have both canonical and noncanonical encodings.  For IEEE binary
interchange formats, all encodings are canonical.  For x86/m68k
ldbl-96, and for ldbl-128ibm, there are encodings that do not
represent any valid value of the type; although formally iscanonical
does not need to handle trap representations (and so could just always
return 1), it seems useful, and in line with the description in the TS
of "representations that are extraneous to the floating-point model"
as being non-canonical (as well as "redundant representations of some
or all of its values"), for it to detect those representations and
return 0 for them.

This patch adds iscanonical to glibc.  It goes in a header
<bits/iscanonical.h>, included under appropriate conditions in
<math.h>.  The default header version just evaluates the argument
(converted to its semantic type, though current GCC will probably
discard that conversion and any exceptions resulting from it) and
returns 1.  ldbl-96 and ldbl-128ibm then have versions of the header
that call a function __iscanonicall for long double (the sizeof-based
tests will of course need updating for float128 support, like other
such type-generic macro implementations).  The ldbl-96 version of
__iscanonicall has appropriate conditionals to reflect the differences
in the m68k version of that format (where the high mantissa bit may be
either 0 or 1 when the exponent is 0 or 0x7fff).  Corresponding tests
for those formats are added as well.  Other architectures do not have
any new functions added because just returning 1 is correct for all
their floating-point formats.

Tested for x86_64, x86, mips64 (to test the default macro version) and
powerpc.

	* math/math.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Include
	<bits/iscanonical.h>.
	* bits/iscanonical.h: New file.
	* math/s_iscanonicall.c: Likewise.
	* math/Versions (__iscanonicall): New libm symbol at version
	GLIBC_2.25.
	* math/libm-test.inc (iscanonical_test_data): New array.
	(iscanonical_test): New function.
	(main): Call iscanonical_test.
	* math/Makefile (headers): Add bits/iscanonical.h.
	(type-ldouble-routines): Add s_iscanonicall.
	* manual/arith.texi (Floating Point Classes): Document
	iscanonical.
	* manual/libm-err-tab.pl: Update comment on interfaces without
	ulps tabulated.
	* sysdeps/ieee754/ldbl-128ibm/bits/iscanonical.h: New file.
	* sysdeps/ieee754/ldbl-128ibm/s_iscanonicall.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/test-iscanonical-ldbl-128ibm.c:
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/Makefile (tests): Add
	test-iscanonical-ldbl-128ibm.
	* sysdeps/ieee754/ldbl-96/bits/iscanonical.h: New file.
	* sysdeps/ieee754/ldbl-96/s_iscanonicall.c: Likewise.
	* sysdeps/ieee754/ldbl-96/test-iscanonical-ldbl-96.c: Likewise.
	* sysdeps/ieee754/ldbl-96/Makefile: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
 2016-09-30 00:27:50 +00:00
Zack Weinberg
c66b29f9cc Installed-header hygiene (BZ#20366): stack_t. 
sys/ucontext.h unconditionally uses stack_t, and it does not make
sense to change that.  But signal.h only declares stack_t under
__USE_XOPEN_EXTENDED || __USE_XOPEN2K8.  The actual definition is
already in a bits header, bits/sigstack.h, but that header insists on
only being included by signal.h, so we have to change that as well as
all of the sys/ucontext.h variants.  (Some but not all variants of
bits/sigcontext.h, which sys/ucontext.h may also need, had already
received this adjustment; for consistency, I made them all the same,
even if that's not strictly necessary in some configurations.)
bits/sigcontext.h and bits/sigstack.h also all need to receive
multiple inclusion guards.

	* sysdeps/generic/sys/ucontext.h
	* sysdeps/arm/sys/ucontext.h
	* sysdeps/i386/sys/ucontext.h
	* sysdeps/m68k/sys/ucontext.h
	* sysdeps/mips/sys/ucontext.h
	* sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h
	* sysdeps/unix/sysv/linux/alpha/sys/ucontext.h
	* sysdeps/unix/sysv/linux/arm/sys/ucontext.h
	* sysdeps/unix/sysv/linux/hppa/sys/ucontext.h
	* sysdeps/unix/sysv/linux/ia64/sys/ucontext.h
	* sysdeps/unix/sysv/linux/m68k/sys/ucontext.h
	* sysdeps/unix/sysv/linux/mips/sys/ucontext.h
	* sysdeps/unix/sysv/linux/nios2/sys/ucontext.h
	* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h
	* sysdeps/unix/sysv/linux/s390/sys/ucontext.h
	* sysdeps/unix/sysv/linux/sh/sys/ucontext.h
	* sysdeps/unix/sysv/linux/sparc/sys/ucontext.h
	* sysdeps/unix/sysv/linux/tile/sys/ucontext.h
	* sysdeps/unix/sysv/linux/x86/sys/ucontext.h:
	Include both bits/sigcontext.h and bits/sigstack.h.
	Fix grammar error in comment, if present.

	* bits/sigstack.h
	* sysdeps/unix/sysv/linux/aarch64/bits/sigstack.h
	* sysdeps/unix/sysv/linux/alpha/bits/sigstack.h
	* sysdeps/unix/sysv/linux/bits/sigstack.h
	* sysdeps/unix/sysv/linux/ia64/bits/sigstack.h
	* sysdeps/unix/sysv/linux/mips/bits/sigstack.h
	* sysdeps/unix/sysv/linux/powerpc/bits/sigstack.h
	* sysdeps/unix/sysv/linux/sparc/bits/sigstack.h
	* bits/sigcontext.h
	* sysdeps/mach/hurd/i386/bits/sigcontext.h
	* sysdeps/unix/sysv/linux/bits/sigcontext.h
	* sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h
	* sysdeps/unix/sysv/linux/sparc/bits/sigcontext.h:
	Add multiple inclusion guard.  Permit inclusion by sys/ucontext.h
	as well as signal.h, if this was not already allowed.  Request
	definition of size_t if necessary.  Minimize semantically-null
	differences across files.
 2016-09-23 08:43:56 -04:00
Joseph Myers
ec94343f59 Add femode_t functions. 
TS 18661-1 defines a type femode_t to represent the set of dynamic
floating-point control modes (such as the rounding mode and trap
enablement modes), and functions fegetmode and fesetmode to manipulate
those modes (without affecting other state such as the raised
exception flags) and a corresponding macro FE_DFL_MODE.

This patch series implements those interfaces for glibc.  This first
patch adds the architecture-independent pieces, the x86 and x86_64
implementations, and the <bits/fenv.h> and ABI baseline updates for
all architectures so glibc keeps building and passing the ABI tests on
all architectures.  Subsequent patches add the fegetmode and fesetmode
implementations for other architectures.

femode_t is generally an integer type - the same type as fenv_t, or as
the single element of fenv_t where fenv_t is a structure containing a
single integer (or the single relevant element, where it has elements
for both status and control registers) - except where architecture
properties or consistency with the fenv_t implementation indicate
otherwise.  FE_DFL_MODE follows FE_DFL_ENV in whether it's a magic
pointer value (-1 cast to const femode_t *), a value that can be
distinguished from valid pointers by its high bits but otherwise
contains a representation of the desired register contents, or a
pointer to a constant variable (the powerpc case; __fe_dfl_mode is
added as an exported constant object, an alias to __fe_dfl_env).

Note that where architectures (that share a register between control
and status bits) gain definitions of new floating-point control or
status bits in future, the implementations of fesetmode for those
architectures may need updating (depending on whether the new bits are
control or status bits and what the implementation does with
previously unknown bits), just like existing implementations of
<fenv.h> functions that take care not to touch reserved bits may need
updating when the set of reserved bits changes.  (As any new bits are
outside the scope of ISO C, that's just a quality-of-implementation
issue for supporting them, not a conformance issue.)

As with fenv_t, femode_t should properly include any software DFP
rounding mode (and for both fenv_t and femode_t I'd consider that
fragment of DFP support appropriate for inclusion in glibc even in the
absence of the rest of libdfp; hardware DFP rounding modes should
already be included if the definitions of which bits are status /
control bits are correct).

Tested for x86_64, x86, mips64 (hard float, and soft float to test the
fallback version), arm (hard float) and powerpc (hard float, soft
float and e500).  Other architecture versions are untested.

	* math/fegetmode.c: New file.
	* math/fesetmode.c: Likewise.
	* sysdeps/i386/fpu/fegetmode.c: Likewise.
	* sysdeps/i386/fpu/fesetmode.c: Likewise.
	* sysdeps/x86_64/fpu/fegetmode.c: Likewise.
	* sysdeps/x86_64/fpu/fesetmode.c: Likewise.
	* math/fenv.h: Update comment on inclusion of <bits/fenv.h>.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (fegetmode): New function
	declaration.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (fesetmode): Likewise.
	* bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New
	typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/aarch64/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/alpha/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/arm/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/hppa/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/ia64/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/m68k/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/microblaze/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/mips/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/nios2/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/powerpc/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (__fe_dfl_mode): New variable
	declaration.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/s390/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/sh/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/sparc/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/tile/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* sysdeps/x86/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(femode_t): New typedef.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro.
	* manual/arith.texi (FE_DFL_MODE): Document macro.
	(fegetmode): Document function.
	(fesetmode): Likewise.
	* math/Versions (fegetmode): New libm symbol at version
	GLIBC_2.25.
	(fesetmode): Likewise.
	* math/Makefile (libm-support): Add fegetmode and fesetmode.
	(tests): Add test-femode and test-femode-traps.
	* math/test-femode-traps.c: New file.
	* math/test-femode.c: Likewise.
	* sysdeps/powerpc/fpu/fenv_const.c (__fe_dfl_mode): Declare as
	alias for __fe_dfl_env.
	* sysdeps/powerpc/nofpu/fenv_const.c (__fe_dfl_mode): Likewise.
	* sysdeps/powerpc/powerpc32/e500/nofpu/fenv_const.c
	(__fe_dfl_mode): Likewise.
	* sysdeps/powerpc/Versions (__fe_dfl_mode): New libm symbol at
	version GLIBC_2.25.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
 2016-09-07 16:40:09 +00:00
Joseph Myers
780257d48d Add fetestexceptflag. 
TS 18661-1 defines an fetestexceptflag function to test the exception
state saved in an fexcept_t object by fegetexceptflag.

This patch implements this function for glibc.  Almost all
architectures save exception state in such a way that it can be
directly ANDed with exception flag bits, so rather than having lots of
fetestexceptflag implementations that all do the same thing, the math/
implementation is made to use this generic logic (which is also OK in
the fallback case where FE_ALL_EXCEPT is zero).  The only architecture
that seems to need anything different is s390.

(fegetexceptflag and fesetexceptflag use abbreviated filenames
fgetexcptflg.c and fsetexcptflg.c.  Because we are no longer concerned
by 14-character filename limits, fetestexceptflag uses the obvious
filename fetestexceptflag.c.)

The NEWS entry is intended to be expanded along the lines given in
<https://sourceware.org/ml/libc-alpha/2016-08/msg00356.html> when
fegetmode and fesetmode are added.

Tested for x86_64, x86, mips64 and powerpc.

	* math/fetestexceptflag.c: New file.
	* sysdeps/s390/fpu/fetestexceptflag.c: Likewise.  Comment by
	Stefan Liebler.
	* math/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]
	(fetestexceptflag): New function declaration.
	* manual/arith.texi (fetestexceptflag): Document function.
	* math/Versions (fetestexceptflag): New libm symbol at version
	GLIBC_2.25.
	* math/Makefile (libm-support): Add fetestexceptflag.
	(tests): Add test-fetestexceptflag.
	* math/test-fetestexceptflag.c: New file.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
 2016-08-29 11:47:21 +00:00
Joseph Myers
5146356f5a Add fesetexcept. 
TS 18661-1 defines an fesetexcept function for setting floating-point
exception flags without the side-effect of causing enabled traps to be
taken.

This patch series implements this function for glibc.  The present
patch adds the fallback stub implementation, x86 and x86_64
implementations, documentation, tests and ABI baseline updates.  The
remaining patches, some of them untested, add implementations for
other architectures.  The implementations generally follow those of
the fesetexceptflag function.

As for fesetexceptflag, the approach taken for architectures where
setting flags causes enabled traps to be taken is to set the flags
(and potentially cause traps) rather than refusing to set the flags
and returning an error.  Since ISO C and TS 18661 provide no way to
enable traps, this is formally in accordance with the standards.

The NEWS entry should be considered a placeholder, since this patch
series is intended to be followed by further such series adding other
TS 18661-1 features, so that the NEWS entry would end up looking more
like

* New <fenv.h> features from TS 18661-1:2014 are added to libm: the
  fesetexcept, fetestexceptflag, fegetmode and fesetmode functions,
  the femode_t type and the FE_DFL_MODE macro.

with hopefully more such entries for other features, rather than
having an entry for a single function in the end.

I believe we have consensus for adding TS 18661-1 interfaces as per
<https://sourceware.org/ml/libc-alpha/2016-06/msg00421.html>.

Tested for x86_64, x86, mips64 (hard float, and soft float to test the
fallback version), arm (hard float) and powerpc (hard float, soft
float and e500).

	* math/fesetexcept.c: New file.
	* sysdeps/i386/fpu/fesetexcept.c: Likewise.
	* sysdeps/x86_64/fpu/fesetexcept.c: Likewise.
	* math/fenv.h: Define
	__GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION and include
	<bits/libc-header-start.h> instead of including <features.h>.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (fesetexcept): New function
	declaration.
	* manual/arith.texi (fesetexcept): Document function.
	* math/Versions (fesetexcept): New libm symbol at version
	GLIBC_2.25.
	* math/Makefile (libm-support): Add fesetexcept.
	(tests): Add test-fesetexcept and test-fesetexcept-traps.
	* math/test-fesetexcept.c: New file.
	* math/test-fesetexcept-traps.c: Likewise.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
 2016-08-16 16:16:10 +00:00
Zack Weinberg
63eb8df85a Minimize sysdeps code involved in defining major/minor/makedev. 
Presently sys/sysmacros.h is entirely defined in sysdeps.  This would
mean that the deprecation logic coming up in the next patch would have
to be written twice (in generic/ and unix/sysv/linux/).  To avoid that,
hoist all but the unavoidably system-dependent logic to misc/, leaving a
bits/ header behind.  This also promotes the Linux-specific encoding of
dev_t, which accommodates 32-bit major and minor numbers in a 64-bit dev_t,
to generic, as glibc's dev_t is always 64 bits wide.

The former Linux implementation used inline functions to avoid evaluating
arguments more than once.  After this change, all platforms use inline
functions, which means that three new symbols are added to the generic ABI.
(These symbols are in the user namespace, which is how they have always
been on Linux.  They begin with "gnu_dev_", so collisions with user code
are pretty unlikely.)

New ports henceforth need only provide a bits/sysmacros.h defining
internal macros __SYSMACROS_{DECLARE,DEFINE}_{MAJOR,MINOR,MAKEDEV}.
This is only necessary if the kernel encoding is incompatible with
the now-generic encoding (for instance, it would be necessary for
FreeBSD).

While I was at it, I added a basic round-trip test for these functions.

	* sysdeps/generic/sys/sysmacros.h: Delete file.
	* sysdeps/unix/sysv/linux/makedev.c: Delete file.
	* sysdeps/unix/sysv/linux/sys/sysmacros.h: Move file ...
	* bits/sysmacros.h: ... here; this encoding is now the generic
	encoding.  Now defines only the following macros:
	__SYSMACROS_DECLARE_MAJOR, __SYSMACROS_DEFINE_MAJOR,
	__SYSMACROS_DECLARE_MINOR, __SYSMACROS_DEFINE_MINOR,
	__SYSMACROS_DECLARE_MAKEDEV, __SYSMACROS_DEFINE_MAKEDEV.

	* misc/sys/sysmacros.h, misc/makedev.c: New files that use
	bits/sysmacros.h and the above new macros to generate the
	public implementations of major, minor, and makedev.
	* misc/tst-makedev.c: New test.
	* include/sys/sysmacros.h: New wrapper.

	* misc/Makefile (headers): Add sys/sysmacros.h, bits/sysmacros.h.
	(routines): Add makedev.
	(tests): Add tst-makedev.
	* misc/Versions [GLIBC_2.25]: Add gnu_dev_major, gnu_dev_minor,
	gnu_dev_makedev.
	* posix/Makefile (headers): Remove sys/sysmacros.h.
	* sysdeps/unix/sysv/linux/Makefile (sysdep_routines): Remove makedev.

	* sysdeps/arm/nacl/libc.abilist: Add GLIBC_2.25,
	gnu_dev_major, gnu_dev_makedev, gnu_dev_minor.
	* sysdeps/unix/sysv/linux/aarch64/libc.abilist
	* sysdeps/unix/sysv/linux/alpha/libc.abilist
	* sysdeps/unix/sysv/linux/arm/libc.abilist
	* sysdeps/unix/sysv/linux/hppa/libc.abilist
	* sysdeps/unix/sysv/linux/i386/libc.abilist
	* sysdeps/unix/sysv/linux/ia64/libc.abilist
	* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
	* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
	* sysdeps/unix/sysv/linux/microblaze/libc.abilist
	* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
	* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
	* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
	* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
	* sysdeps/unix/sysv/linux/nios2/libc.abilist
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
	* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
	* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
	* sysdeps/unix/sysv/linux/sh/libc.abilist
	* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
	* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist
	* sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist
	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist:
	Add GLIBC_2.25.
 2016-08-03 15:23:04 -04:00
Rajalakshmi Srinivasaraghavan
41a359e22f Add nextup and nextdown math functions 
TS 18661 adds nextup and nextdown functions alongside nextafter to provide
support for float128 equivalent to it.  This patch adds nextupl, nextup,
nextupf, nextdownl, nextdown and nextdownf to libm before float128 support.

The nextup functions return the next representable value in the direction of
positive infinity and the nextdown functions return the next representable
value in the direction of negative infinity.  These are currently enabled
as GNU extensions.
 2016-06-16 21:37:45 +05:30
Adhemerval Zanella
f5c77f78ec Remove __ASSUME_FUTEX_LOCK_PI 
This patch removes __ASSUME_FUTEX_LOCK_PI usage and assumes that
kernel will correctly return if it supports or not
futex_atomic_cmpxchg_inatomic.

Current PI mutex code already has runtime support by calling
prio_inherit_missing and returns ENOTSUP if the futex operation fails
at initialization (it issues a FUTEX_UNLOCK_PI futex operation).

Also, current minimum supported kernel (v3.2) will return ENOSYS if
futex_atomic_cmpxchg_inatomic is not supported in the system:

kernel/futex.c:

2628 long do_futex(u32 __user *uaddr, int op, u32 val, ktime_t *timeout,
2629                 u32 __user *uaddr2, u32 val2, u32 val3)
2630 {
2631         int ret = -ENOSYS, cmd = op & FUTEX_CMD_MASK;
[...]
2667         case FUTEX_UNLOCK_PI:
2668                 if (futex_cmpxchg_enabled)
2669                         ret = futex_unlock_pi(uaddr, flags);
[...]
2686         return ret;
2687 }

The futex_cmpxchg_enabled is initialized by calling cmpxchg_futex_value_locked,
which calls futex_atomic_cmpxchg_inatomic.

For ARM futex_atomic_cmpxchg_inatomic will be either defined (if both
CONFIG_CPU_USE_DOMAINS and CONFIG_SMP are not defined) or use the
default generic implementation that returns ENOSYS.

For m68k is uses the default generic implementation.

For mips futex_atomic_cmpxchg_inatomic will return ENOSYS if cpu has no
'cpu_has_llsc' support (defined by each chip supporte inside kernel).

For sparc, 32-bit kernel will just use default generic implementation,
while 64-bit kernel has support.

Tested on ARM (v3.8 kernel) and x86_64.

	* nptl/pthread_mutex_init.c [__ASSUME_FUTEX_LOCK_PI]
	(prio_inherit_missing): Remove define.
	* sysdeps/unix/sysv/linux/arm/kernel-features.h
	(__ASSUME_FUTEX_LOCK_PI): Likewise.
	* sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_FUTEX_LOCK_PI):
	Likewise.
	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
	(__ASSUME_FUTEX_LOCK_PI): Likewise.
	* sysdeps/unix/sysv/linux/mips/kernel-features.h
	(__ASSUME_FUTEX_LOCK_PI): Likewise.
	* sysdeps/unix/sysv/linux/sparc/kernel-features.h
	(__ASSUME_FUTEX_LOCK_PI): Likewise.
 2016-06-13 08:36:34 -03:00
Adhemerval Zanella
78880cc185 Revert {send,sendm,recv,recvm}msg conformance changes 
After some discussion in libc-alpha about this POSIX compliance fix, I see
that GLIBC should indeed revert back to previous definition of msghdr and
cmsghdr and implementation of sendmsg, recvmsg, sendmmsg, recvmmsg due some
reasons:

 * The possible issue where the syscalls wrapper add the compatibility
   layer is quite limited in scope and range.  And kernel current
   also add some limits to the values on the internal msghdr and
   cmsghdr fields:

     - msghdr::msg_iovlen larger than UIO_MAXIOV (1024) returns
       EMSGSIZE.
     - msghdr::msg_controllen larger than INT_MAX returns ENOBUFS.

 * There is a small performance hit for recvmsg/sendmsg/recmmsg which
   is neglectable, but it is a big hit for sendmmsg since now instead
   of calling the syscall for the packed structure, GLIBC is calling
   multiple sendmsg.  This defeat the very existence of the syscall.

 * It currently breaks libsanitizer build on GCC [1] (I fixed on compiler-rt).
   However the fix is incomplete because it does add any runtime check
   since libsanitizer currently does not have any facility to intercept
   symbols with multiple version [2].

   This, along with incorret dlsym/dlvsym return for versioned symbol due
   another bug [3], makes hard to interpose versioned symbols.

   Also, current approach of fixing GCC PR#71445 leads to half-baked
   solutions without versioned symbol interposing.

This patch basically reverts commits 2f0dc39029, 222c2d7f43,
af7f7c7ec8.  I decided to not revert abf29edd4a (Adjust
kernel-features.h defaults for recvmsg and sendmsg) mainly because it
does not really address the POSIX compliance original issue and also
adds some cleanups.

Tested on x86, i386, s390, s390x, aarch64, and powerpc64le.

[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71445
[2] https://github.com/google/sanitizers/issues/628
[3] https://sourceware.org/bugzilla/show_bug.cgi?id=14932

	* conform/data/sys/socket.h-data (msghdr.msg_iovlen): Add xfail-.
	(msghdr.msg_controllen): Likewise.
	(cmsghdr.cmsg_len): Likewise.
	* nptl/Makefile (libpthread-routines): Remove ptw-oldrecvmsg and
	ptw-oldsendmsg.
	(CFLAGS-oldrecvmsg.c): Remove rule.
	(CFLAGS-oldsendmsg.c): Likewise.
	(CFLAGS-recvmsg.c): Add rule.
	(CFLAGS-sendmsg.c): Likewise.
	* sysdeps/unix/sysv/linux/Makefile (sysdep_routines): Remove
	oldrecvmsg, oldsendmsg, oldrecvmmsg, oldsendmmsg.
	(CFLAGS-recvmsg.c): Remove rule.
	(CFLAGS-sendmsg.c): Likewise.
	(CFLAGS-oldrecvmsg.c): Likewise.
	(CFLAGS-oldsendmsg.c): Likewise.
	(CFLAGS-recvmmsg.c): Likewise.
	* sysdeps/unix/sysv/linux/bits/socket.h (msghdr.msg_iovlen): Revert
	to kernel defined interfaces.
	(msghdr.msg_controllen): Likewise.
	(cmsghdr.cmsg_len): Likewise.
	(msghdr.__glibc_reserved1): Remove member.
	(msghdr.__glibc_reserved2): Likewise.
	(cmsghdr.__glibc_reserved1): Likewise.
	* sysdeps/unix/sysv/linux/oldrecvmmsg.c: Remove file.
	* sysdeps/unix/sysv/linux/oldrecvmsg.c: Likewise.
	* sysdeps/unix/sysv/linux/oldsendmmsg.c: Likewise.
	* sysdeps/unix/sysv/linux/oldsendmsg.c: Likewise.
	* sysdeps/unix/sysv/linux/recvmmsg.c: Revert back to previous
	version.
	* sysdeps/unix/sysv/linux/recvmsg.c: Likewise.
	* sysdeps/unix/sysv/linux/sendmmsg.c: Likewise.
	* sysdeps/unix/sysv/linux/sendmsg.c: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/Versions [libc] (GLIBC_2.24):
	Remove recvmsg and sendmsg.
	* sysdeps/unix/sysv/linux/alpha/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/hppa/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/i386/Versions [libc] (GLIBC_2.24): Likewise.
	* sysdeps/unix/sysv/linux/m68k/Versions [libc] (GLIBC_2.24): Likewise.
	* sysdeps/unix/sysv/linux/microblaze/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/Versions
	[libc] (GLIBC_2.24): Likewise.
	* sysdeps/unix/sysv/linux/nios2/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/Versions
	[libc] (GLIBC_2.24): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/sh/Versions [libc] (GLIBC_2.24): Likewise.
	* sysdeps/unix/sysv/linux/sparc/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/tile/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/x86_64/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/Versions: Remove file
	* sysdeps/unix/sysv/linux/x86_64/64/Versions: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/Versions: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/libc.abilist: Remove new 2.24
	version for {recv,send,recm,sendm}msg.
	* sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
 2016-06-10 11:58:16 -03:00
Carlos O'Donell
47dd3543d3 Bug 20198: quick_exit should not call destructors. 
In C++11 18.5.12 says "Objects shall not be destroyed as a
result of calling quick_exit." In C11 quick_exit is silent
about thread object destruction. Therefore to make glibc
C++ compliant we do not call any thread local destructors.
A new regression test verifies the fix.

I will note that C++11 18.5.3 makes it clear that C++
defines additional requirements for _Exit() to prevent it
from executing destructors.

Given that the point of _Exit() is to terminate the process
immediately it makes sense the C and C++ should line up
and avoid calling destructors.

No failures. New regtest passes.
 2016-06-06 21:40:25 -04:00
Adhemerval Zanella
af7f7c7ec8 network: recvmsg and sendmsg standard compliance (BZ#16919) 
POSIX specifies that both msghdr::msg_iovlen and msghdr::msg_controllen
to be of size int and socklen_t respectively.  However Linux defines it as
both size_t and for 64-bit it requires some adjustments to make the
functions standard compliance.

This patch fixes it by creating a temporary header and zeroing the pad
fields for 64-bits architecture where size of size_t exceeds the size of
the int.

Also the new recvmsg and sendmsg implementation is only added on libc,
with libpthread only containing a compat symbol.

Tested on x86_64, i686, aarch64, armhf, and powerpc64le.

	* conform/data/sys/socket.h-data (msghdr.msg_iovlen): Remove xfail-
	and change to correct expected type.
	(msghdr.msg_controllen): Likewise.
	(cmsghdr.cmsg_len): Likewise.
	* sysdeps/unix/sysv/linux/bits/socket.h (msghdr.msg_iovlen): Fix
	expected POSIX assumption about the size.
	(msghdr.msg_controllen): Likewise.
	(msghdr.__glibc_reserved1): Likewise.
	(msghdr.__glibc_reserved2): Likewise.
	(cmsghdr.cmsg_len): Likewise.
	(cmsghdr.__glibc_reserved1): Likewise.
	* nptl/Makefile (libpthread-routines): Remove ptw-recvmsg and ptw-sendmsg.
	Add ptw-oldrecvmsg and ptw-oldsendmsg.
	(CFLAGS-sendmsg.c): Remove rule.
	(CFLAGS-recvmsg.c): Likewise.
	(CFLAGS-oldsendmsg.c): Add rule.
	(CFLAGS-oldrecvmsg.c): Likewise.
	* sysdeps/unix/sysv/linux/alpha/Versions [libc] (GLIBC_2.24): Add
	recvmsg and sendmsg.
	* sysdeps/unix/sysv/linux/aarch64/Version [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/arm/Versions [libc] (GLIBC_2.24): Likewise.
	* sysdeps/unix/sysv/linux/hppa/Versions [libc] (GLIBC_2.24): Likewise.
	* sysdeps/unix/sysv/linux/i386/Versions [libc] (GLIBC_2.24): Likewise.
	* sysdeps/unix/sysv/linux/ia64/Versions [libc] (GLIBC_2.24): Likewise.
	* sysdeps/unix/sysv/linux/m68k/Versions [libc] (GLIBC_2.24): Likewise.
	* sysdeps/unix/sysv/linux/microblaze/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/nios2/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/Versions [libc]
	(GLIBC_2.24): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/sh/Versions [libc] (GLIBC_2.24): Likewise.
	* sysdeps/unix/sysv/linux/sparc/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/Versions [libc] (GLIBC_2.24):
	Likewise.
	( sysdeps/unix/sysv/linux/tile/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/Versions [libc]
	(GLIBC_2.24): Likewise.
	( sysdeps/unix/sysv/linux/x86_64/64/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/x84_64/Versions [libc] (GLIBC_2.24):
	Likewise.
	* sysdeps/unix/sysv/linux/Makefile
	[$(subdir) = socket)] (sysdep_headers): Add oldrecvmsg and oldsendmsg.
	(CFLAGS-sendmsg.c): Add rule.
	(CFLAGS-recvmsg.c): Likewise.
	(CFLAGS-oldsendmsg.c): Likewise.
	(CFLAGS-oldrecvmsg.c): Likewise.
	* sysdeps/unix/sysv/linux/check_native.c (__check_native): Fix msghdr
	initialization.
	* sysdeps/unix/sysv/linux/check_pf.c (make_request): Likewise.
	* sysdeps/unix/sysv/linux/ifaddrs.c (__netlink_request): Likewise.
	* sysdeps/unix/sysv/linux/oldrecvmsg.c: New file.
	* sysdeps/unix/sysv/linux/oldsendmsg.c: Likewise.
	* sysdeps/unix/sysv/linux/recvmsg.c (__libc_recvmsg): Adjust msghdr
	iovlen and controllen fields to adjust to POSIX specification.
	* sysdeps/unix/sysv/linux/sendmsg.c (__libc_sendmsg): Likewise.
	* sysdeps/unix/sysv/linux/aarch64/libc.abilist: New version and
	added recvmsg and sendmsg.
	* sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist:
	Likewise.
	* sysdeps/unix/linux/powerpc/powerpc32/nofpu/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise.
	* sysdepe/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise.
	Likewise.
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist: Likewise.
	Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
 2016-05-25 17:39:01 -03:00
Adhemerval Zanella
abf29edd4a Adjust kernel-features.h defaults for recvmsg and sendmsg 
This patch removes the auto-generation for recvmsg and sendmsg syscall
and adjust the kernel-features.h for all architectures supported on
Linux.  This patch follows the idea of 'Adjust kernel-features.h defaults
for socket syscalls.' (35ade9f11b) by define
__ASSUME_SENDMSG_SYSCALL and __ASSUME_RECVMSG_SYSCALL as supported by
default and undefine it for the architecture that do not support it
directly.

The main rationale is to make is easier add code wrapper over the syscall
to fix BZ#16919 (recvmsg standard compliance).

Tested on x86_64, i686, aarch64, armhf, and powerpc64le.

	* sysdeps/unix/sysv/linux/alpha/syscalls.list (recvmsg): Remove
	from auto-generation.
	(sendmsg): Likewise.
	* sysdeps/unix/sysv/linux/arm/syscalls.list (recvmsg): Likewise.
	(sendmsg): Likewise.
	* sysdeps/unix/sysv/linux/generic/syscalls.list (recvmsg): Likewise.
	(sendmsg): Likewise.
	* sysdeps/unix/sysv/linux/hppa/syscalls.list (recvmsg): Likewise.
	(sendmsg): Likewise.
	* sysdeps/unix/sysv/linux/ia64/syscalls.list (recvmsg): Likewise.
	(sendmsg): Likewise.
	* sysdeps/unix/sysv/linux/mips/syscalls.list (recvmsg): Likewise.
	(sendmsg): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list (recvmsg):
	Likewise.
	(sendmsg): Likewise.
	* sysdeps/unix/sysv/linux/x86_64/syscalls.list (recvmsg): Likewise.
	(sendmsg): Likewise.
	* sysdeps/unix/sysv/linux/i386/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDMSG_SYSCALL):
	Remove.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION < 0x040300] (__ASSUME_SENDMSG_SYSCALL):
	Undefine.
	[__LINUX_KERNEL_VERSION < 0x040300] (__ASSUME_RECVMSG_SYSCALL):
	Likewise.
	* sysdeps/unix/sysv/linux/kernel-features.h
	(__ASSUME_SENDMSG_SYSCALL): Define.
	(__ASSUME_RECVMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDMSG_SYSCALL):
	Remove.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION < 0x040300] (__ASSUME_SENDMSG_SYSCALL):
	Undefine.
	[__LINUX_KERNEL_VERSION < 0x040300] (__ASSUME_RECVMSG_SYSCALL):
	Likewise.
	* sysdeps/unix/sysv/linux/s390/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDMSG_SYSCALL):
	Remove.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION < 0x040300] (__ASSUME_SENDMSG_SYSCALL):
	Undefine.
	[__LINUX_KERNEL_VERSION < 0x040300] (__ASSUME_RECVMSG_SYSCALL):
	Likewise.
	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	(__ASSUME_SENDMSG_SYSCALL): Undefine.
	(__ASSUME_RECVMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/kernel-features.h
	(__ASSUME_SENDMSG_SYSCALL): Likewise.
	(__ASSUME_RECVMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/sh/kernel-features.h
	(__ASSUME_SENDMSG_SYSCALL): Likewise.
	(__ASSUME_RECVMSG_SYSCALL): Likewise.
 2016-05-25 17:27:57 -03:00
Florian Weimer
3375cfafa7 Make padding in struct sockaddr_storage explicit [BZ #20111] 
This avoids aliasing issues with GCC 6 in -fno-strict-aliasing
mode.  (With implicit padding, not all data is copied.)

This change makes it explicit that struct sockaddr_storage is
only 126 bytes large on m68k (unlike elsewhere, where we end up
with the requested 128 bytes).  The new test case makes sure that
this does not happen on other architectures.
 2016-05-23 19:43:09 +02:00
Andreas Schwab
4816d802ff m68k: avoid local labels in symbol table 2016-04-30 18:50:39 +02:00
Adhemerval Zanella
0cb313f7cb Fix clone (CLONE_VM) pid/tid reset (BZ#19957) 
As discussed in libc-alpha [1] current clone with CLONE_VM (without
CLONE_THREAD set) will reset the pthread pid/tid fields to -1.  The
issue is since memory is shared between the parent and child it will
clobber parent's cached pid/tid leading to internal inconsistencies
if the value is not restored.

And even it is restored it may lead to racy conditions when between
set/restore a thread might invoke pthread function that validate the
pthread with INVALID_TD_P/INVALID_NOT_TERMINATED_TD_P and thus get
wrong results.

As stated in BZ19957, previously reports of this behaviour was close
with EWONTFIX due the fact usage of clone outside glibc is tricky
since glibc requires consistent internal pthread, while using clone
directly may not provide it. However since now posix_spawn uses
clone (CLONE_VM) to fixes various issues related to previous vfork
usage this issue requires fixing.

The vfork implementation also does something similar, but instead
it negates and restores only the *pid* field and functions that
might access its value know to handle such case (getpid, raise
and pthread ones that uses INVALID_TD_P/INVALID_NOT_TERMINATED_TD_P
macros that check only *tid* field).  Also vfork does not call
__clone directly, instead calling either __NR_vfork or __NR_clone
directly.

So this patch removes this clone behavior by avoiding setting
the pthread pid/tid field for CLONE_VM. There is no need to
check for CLONE_THREAD, since the minimum supported kernel in all
architecture implies that CLONE_VM must be used with CLONE_THREAD,
otherwise clone returns EINVAL.

Instead of current approach of:

   int clone(int (*fn)(void *), void *child_stack, int flags, ...)
      [...]
      if (flags & CLONE_THREAD)
        goto do_syscall;
      pid_t new_value;
      if (flags & CLONE_VM)
        new_value = -1;
      else
        new_value = getpid ();
      THREAD_SETMEM (THREAD_SELF, pid, new_value);
      THREAD_SETMEM (THREAD_SELF, tid, new_value);

    do_syscall:
      [...]

The new approach uses:

   int clone(int (*fn)(void *), void *child_stack, int flags, ...)
      [...]
      if (flags & CLONE_VM)
        goto do_syscall;
      pid_t new_value = getpid ();
      THREAD_SETMEM (THREAD_SELF, pid, new_value);
      THREAD_SETMEM (THREAD_SELF, tid, new_value);

    do_syscall:
      [...]

It also removes the linux tst-getpid2.c test which expects the previous
behavior and instead add another clone test.

Tested on x86_64, i686, x32, powerpc64le, aarch64, armhf, s390, and
s390x. I also did limited check on mips32 and sparc64 (using the new
added test).

I also got reviews from both m68k, hppa, and tile.  So I presume for
these architecture the patch works.

The fixes for alpha, microblaze, sh, ia64, and nio2 have not been
tested.

[1] https://sourceware.org/ml/libc-alpha/2016-04/msg00307.html

	* sysdeps/unix/sysv/linux/Makefile [$(subdir) == nptl] (test): Remove
	tst-getpid2.
	(test): Add tst-clone2.
	* sysdeps/unix/sysv/linux/tst-clone2.c: New file.
	* sysdeps/unix/sysv/linux/aarch64/clone.S (__clone): Do not change
	pid/tid fields for CLONE_VM.
	* sysdeps/unix/sysv/linux/arm/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/mips/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/tst-getpid2.c: Remove file.
 2016-04-29 18:19:30 -03:00
Joseph Myers
35ade9f11b Adjust kernel-features.h defaults for socket syscalls. 
This patch adjusts the defaults for kernel-features.h macros relating
to availability of accept4, recvmmsg and sendmmsg.  It is not intended
to affect which macros end up getting defined in any configuration.

At present, all architectures with syscalls for those functions need
to define __ASSUME_*_SYSCALL macros; in particular, any new
architecture needs its own kernel-features.h file for that purpose,
though it may not otherwise need such a header.  Those macros are then
used together with __ASSUME_SOCKETCALL to define macros for whether
the functions in question are available.

This patch changes the defaults so that the syscalls are assumed to be
available by default with recent-enough kernels, and it is the
responsibility of architecture headers to undefine the macros if they
are unavailable in supported kernels at least as recent as the version
where the architecture-independent functionality was introduced.  The
__ASSUME_<function> macros are defaulted similarly instead of being
defined based on other macros (defining based on other macros would no
longer work because the #undefs appear after the generic header is
included), so where the syscall being unavailable means the function
is unavailable this means the architecture header has to undefine the
__ASSUME_<function> macro; this only affects __ASSUME_ACCEPT4 for
ia64, as other cases where the syscalls were added late enough to be
relevant with current kernel version requirements are all on
socketcall architectures.

As a consequence, the AArch64 and Nios II kernel-features.h header
files are removed, and others simplified.  When the minimum kernel
version becomes 4.3 or later on all architectures, the syscalls in
question can just be assumed unconditionally, permitting further
simplification.

Tested for x86_64, x86 and powerpc (that installed shared libraries
are unchanged by the patch, and testsuite for x86_64 and x86).

	* sysdeps/unix/sysv/linux/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Define unconditionally.
	(__ASSUME_ACCEPT4): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
	Define.
	[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG):
	Likewise.
	* sysdeps/unix/sysv/linux/aarch64/kernel-features.h: Remove file.
	* sysdeps/unix/sysv/linux/nios2/kernel-features.h: Likewise.
	* sysdeps/unix/sysv/linux/alpha/kernel-features.h
	(__ASSUME_RECVMMSG_SYSCALL): Do not define.
	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/arm/kernel-features.h
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/hppa/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/i386/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL):
	Likewise.
	(__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION <
	0x040300] instead of defining if [__LINUX_KERNEL_VERSION >=
	0x040300].
	* sysdeps/unix/sysv/linux/ia64/kernel-features.h
	(__ASSUME_RECVMMSG_SYSCALL): Do not define.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	(__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION <
	0x030300] instead of defining if [__LINUX_KERNEL_VERSION >=
	0x030300].
	[__LINUX_KERNEL_VERSION < 0x030300] (__ASSUME_ACCEPT4): Undefine.
	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION <
	0x040300] instead of defining if [__LINUX_KERNEL_VERSION >=
	0x040300].
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Do not define.
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION <
	0x030300] instead of defining if [__LINUX_KERNEL_VERSION >=
	0x030300].
	* sysdeps/unix/sysv/linux/mips/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Do not define.
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/s390/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Undefine if [__LINUX_KERNEL_VERSION <
	0x040300] instead of defining if [__LINUX_KERNEL_VERSION >=
	0x040300].
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/sh/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Do not define.
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/sparc/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/tile/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/x86_64/kernel-features.h
	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL):
	Likewise.
 2016-03-15 21:09:33 +00:00
Adhemerval Zanella
9ff72da471 posix: New Linux posix_spawn{p} implementation 
This patch implements a new posix_spawn{p} implementation for Linux.  The main
difference is it uses the clone syscall directly with CLONE_VM and CLONE_VFORK
flags and a direct allocated stack.  The new stack and start function solves
most the vfork limitation (possible parent clobber due stack spilling).  The
remaning issue are related to signal handling:

  1. That no signal handlers must run in child context, to avoid corrupt
     parent's state.
  2. Child must synchronize with parent to enforce stack deallocation and
     to possible return execv issues.

The first one is solved by blocking all signals in child, even NPTL-internal
ones (SIGCANCEL and SIGSETXID).  The second issue is done by a stack allocation
in parent and a synchronization with using a pipe or waitpid (in case or error).
The pipe has the advantage of allowing the child signal an exec error (checked
with new tst-spawn2 test).

There is an inherent race condition in pipe2 usage for architectures that do not
support the syscall directly.  In such cases the a pipe plus fctnl is used
instead and it may lead to file descriptor leak in parent (as decribed by fcntl
documentation).

The child process stack is allocate with a mmap with MAP_STACK flag using
default architecture stack size.  Although it is slower than use a stack buffer
from parent, it allows some slack for the compatibility code to run scripts
with no shebang (which may use a buffer with size depending of argument list
count).

Performance should be similar to the vfork default posix implementation and
way faster than fork path (vfork on mostly linux ports are basically
clone with CLONE_VM plus CLONE_VFORK).  The only difference is the syscalls
required for the stack allocation/deallocation.

It fixes BZ#10354, BZ#14750, and BZ#18433.

Tested on i386, x86_64, powerpc64le, and aarch64.

	[BZ #14750]
	[BZ #10354]
	[BZ #18433]
	* include/sched.h (__clone): Add hidden prototype.
	(__clone2): Likewise.
	* include/unistd.h (__dup): Likewise.
	* posix/Makefile (tests): Add tst-spawn2.
	* posix/tst-spawn2.c: New file.
	* sysdeps/posix/dup.c (__dup): Add hidden definition.
	* sysdeps/unix/sysv/linux/aarch64/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/alpha/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/arm/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/hppa/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/i386/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/ia64/clone2.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/m68k/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/microblaze/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/mips/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/nios2/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S (__clone):
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S (__clone):
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/sh/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/tile/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/x86_64/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/nptl-signals.h
	(____nptl_is_internal_signal): New function.
	* sysdeps/unix/sysv/linux/spawni.c: New file.
 2016-03-07 11:53:47 +07:00
Joseph Myers
ad1b6d85ba Remove kernel-features.h conditionals on pre-3.2 kernels. 
This patch follows up on the increase in minimum kernel version by
removing conditionals in non-x86, non-x86_64 kernel-features.h headers
that are now constant for all supported kernel versions.

	* sysdeps/unix/sysv/linux/alpha/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020621]: Make code unconditional.
	[__LINUX_KERNEL_VERSION >= 0x030200]: Likewise.
	[__LINUX_KERNEL_VERSION < 0x020621]: Remove conditional code.
	* sysdeps/unix/sysv/linux/arm/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020621]: Make code unconditional.
	[__LINUX_KERNEL_VERSION >= 0x020624]: Likewise.
	[__LINUX_KERNEL_VERSION >= 0x030000]: Likewise.
	* sysdeps/unix/sysv/linux/hppa/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020622]: Likewise.
	[__LINUX_KERNEL_VERSION >= 0x030100]: Likewise.
	[__LINUX_KERNEL_VERSION < 0x020625]: Remove conditional code.
	* sysdeps/unix/sysv/linux/ia64/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020621]: Make code unconditional.
	[__LINUX_KERNEL_VERSION >= 0x030000]: Likewise.
	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
	[__LINUX_KERNEL_VERSION < 0x030000]: Remove conditional code.
	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020621]: Make code unconditional.
	[__LINUX_KERNEL_VERSION < 0x020621]: Remove conditional code.
	[__LINUX_KERNEL_VERSION < 0x020625]: Likewise.
	* sysdeps/unix/sysv/linux/mips/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020621]: Make code unconditional.
	[__LINUX_KERNEL_VERSION >= 0x030100]: Likewise.
	[_MIPS_SIM == _ABIN32 && __LINUX_KERNEL_VERSION < 0x020623]:
	Remove conditional code.
	* sysdeps/unix/sysv/linux/powerpc/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020625]: Make code unconditional.
	[__LINUX_KERNEL_VERSION >= 0x030000]: Likewise.
	* sysdeps/unix/sysv/linux/sh/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020625]: Likewise.
	[__LINUX_KERNEL_VERSION >= 0x030000]: Likewise.
	[__LINUX_KERNEL_VERSION < 0x020625]: Remove conditional code.
	* sysdeps/unix/sysv/linux/sparc/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020621]: Make code unconditional.
	[__LINUX_KERNEL_VERSION >= 0x030000]: Likewise.
	* sysdeps/unix/sysv/linux/tile/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x030000]: Likewise.
 2016-02-26 16:17:25 +00:00
Joseph Myers
f7a9f785e5 Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
Dmitry V. Levin
e0043e17df Fix linux personality syscall wrapper 
The personality system call, starting with linux kernel commit
v2.6.29-6609-g11d06b2a1e5658f448a308aa3beb97bacd64a940, always
successfully changes the personality if requested.  The syscall
wrapper, however, still can return an error in the following cases:
- the value returned by the system call looks like an error
due to architecture limitations of 32-bit kernels;
- a personality greater than 0xffffffff is passed to the system call,
and the 64-bit kernel does not have commit
v2.6.35-rc1-372-g485d527686850d68a0e9006dd9904f19f122485e
that would truncate this value to unsigned int;
- on sparc64, the value returned by the system call looks like an error
due to sparc64 kernel sign extension bug.

The solution is three-fold:
- move generic syscalls.list personality entry to generic 64-bit
syscalls.list file;
- for each 32-bit architecture that use negated errno semantics,
add a NOERRNO personality entry to their syscalls.list file;
- for sparc64 and 32-bit architectures that use dedicated registers
to flag syscall errors, add a wrapper around personality syscall;
if the system call return value is flagged as an error, this wrapper
returns the negated "would be errno" value, otherwise it returns
the system call return value; on sparc64, it also truncates the
personality argument to unsigned int before passing it to the kernel.

[BZ #19408]
* sysdeps/unix/sysv/linux/personality.c: New file.
* sysdeps/unix/sysv/linux/sparc/sparc64/personality.c: Likewise.
* sysdeps/unix/sysv/linux/tst-personality.c: Likewise.
* sysdeps/unix/sysv/linux/Makefile [$(subdir) == misc]
(sysdep_routines): Add personality.
(tests): Add tst-personality.
* sysdeps/unix/sysv/linux/syscalls.list (personality): Move ...
* sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: ... here.
* sysdeps/unix/sysv/linux/arm/syscalls.list (personality): New entry.
* sysdeps/unix/sysv/linux/hppa/syscalls.list (personality): Likewise.
* sysdeps/unix/sysv/linux/i386/syscalls.list (personality): Likewise.
* sysdeps/unix/sysv/linux/m68k/syscalls.list (personality): Likewise.
* sysdeps/unix/sysv/linux/microblaze/syscalls.list (personality):
Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list (personality):
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list (personality):
Likewise.
* sysdeps/unix/sysv/linux/sh/syscalls.list (personality): Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list (personality):
Likewise.
 2015-12-31 00:17:48 +00:00
Joseph Myers
e5a5315e2d Use direct socket syscalls for new kernels on i386, m68k, microblaze, sh. 
Now that we have __ASSUME_* macros for direct socket syscalls to use
them instead of socketcall when they can be assumed to be available on
socketcall architectures, this patch defines those macros when
appropriate for i386, m68k, microblaze and sh (for 4.3, 4.3, all
supported kernels and 2.6.37, respectively; the only use of socketcall
support on microblaze is it allows accept4 and sendmmsg to be
supported on a wider range of kernel versions).

David, it seems that 32-bit SPARC is the only architecture supported
by glibc that still lacks these direct syscalls.  It would be good to
get them added to the SPARC kernel so we can eventually eliminate
socketcall support in glibc (and thereby just use entries in
sysdeps/unix/syscalls.list for most of these functions) when we can
assume new-enough kernels.

Tested for i386 (testsuite, and that installed shared libraries are
unchanged by this patch - not using a new enough kernel, so this
doesn't actually test much, but the i386 and m68k code is essentially
the same as that already in use for s390).

	* sysdeps/unix/sysv/linux/i386/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SOCKET_SYSCALL):
	New macro.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_SOCKETPAIR_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_BIND_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_CONNECT_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_LISTEN_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_ACCEPT4_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_GETSOCKOPT_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_SETSOCKOPT_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_GETSOCKNAME_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_GETPEERNAME_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDTO_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_SENDTO_FOR_SEND_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVFROM_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_RECVFROM_FOR_RECV_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SHUTDOWN_SYSCALL):
	Likewise.
	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVMMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDMMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SOCKET_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_SOCKETPAIR_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_BIND_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_CONNECT_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_LISTEN_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_ACCEPT4_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_GETSOCKOPT_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_SETSOCKOPT_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_GETSOCKNAME_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_GETPEERNAME_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDTO_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_SENDTO_FOR_SEND_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVFROM_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_RECVFROM_FOR_RECV_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SHUTDOWN_SYSCALL):
	Likewise.
	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	(__ASSUME_SOCKET_SYSCALL): Likewise.
	(__ASSUME_BIND_SYSCALL): Likewise.
	(__ASSUME_CONNECT_SYSCALL): Likewise.
	(__ASSUME_LISTEN_SYSCALL): Likewise.
	(__ASSUME_ACCEPT_SYSCALL): Likewise.
	(__ASSUME_GETSOCKNAME_SYSCALL): Likewise.
	(__ASSUME_GETPEERNAME_SYSCALL): Likewise.
	(__ASSUME_SOCKETPAIR_SYSCALL): Likewise.
	(__ASSUME_SEND_SYSCALL): Likewise.
	(__ASSUME_SENDTO_SYSCALL): Likewise.
	(__ASSUME_RECV_SYSCALL): Likewise.
	(__ASSUME_RECVFROM_SYSCALL): Likewise.
	(__ASSUME_SHUTDOWN_SYSCALL): Likewise.
	(__ASSUME_GETSOCKOPT_SYSCALL): Likewise.
	(__ASSUME_SETSOCKOPT_SYSCALL): Likewise.
	(__ASSUME_SENDMSG_SYSCALL): Likewise.
	(__ASSUME_RECVMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/sh/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_SOCKET_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_BIND_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_CONNECT_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_LISTEN_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_ACCEPT_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625]
	(__ASSUME_GETSOCKNAME_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625]
	(__ASSUME_GETPEERNAME_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625]
	(__ASSUME_SOCKETPAIR_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_SEND_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_SENDTO_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_RECV_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_RECVFROM_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_SHUTDOWN_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625]
	(__ASSUME_GETSOCKOPT_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625]
	(__ASSUME_SETSOCKOPT_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_SENDMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_RECVMSG_SYSCALL):
	Likewise.
 2015-12-09 20:59:43 +00:00
Joseph Myers
d709042a6e Fix lgamma setting signgam for ISO C (bug 15421). 
The lgamma (and likewise lgammaf, lgammal) function wrongly sets the
signgam variable even when building for strict ISO C conformance
(-std=c99 / -std=c11), although the user may define such a variable
and it's only in the implementation namespace for POSIX with XSI
extensions enabled.

Following discussions starting at
<https://sourceware.org/ml/libc-alpha/2013-04/msg00767.html> and
<https://sourceware.org/ml/libc-alpha/2015-10/msg00844.html>, it seems
that the safest approach for fixing this particular issue is for
signgam to become a weak alias for a newly exported symbol __signgam,
with the library functions only setting __signgam, at which point
static linker magic will preserve the alias for newly linked binaries
that refer to the library's signgam rather than defining their own,
while breaking the alias for programs that define their own signgam,
with new symbol versions for lgamma functions and with compat symbols
for existing binaries that set both signgam and __signgam.

This patch implements that approach for the fix.  signgam is made into
a weak alias.  The four symbols __signgam, lgamma, lgammaf, lgammal
get new symbol versions at version GLIBC_2.23, with the existing
versions of lgamma, lgammaf and lgammal becoming compat symbols.

When the compat versions are built, gamma, gammaf and gammal are
aliases for the compat versions (i.e. always set signgam); this is OK
as they are not ISO C functions, and avoids adding new symbol versions
for them unnecessarily.  When the compat versions are not built
(i.e. for static linking and for future glibc ports), gamma, gammaf
and gammal are aliases for the new versions that set __signgam.  The
ldbl-opt versions are updated accordingly.

The lgamma wrappers are adjusted so that the same source files,
included from different files with different definitions of
USE_AS_COMPAT, can build either the new versions or the compat
versions.  Similar changes are made to the ia64 versions (untested).

Tests are added that the lgamma functions do not interfere with a user
variable called signgam for ISO C, with various choices for the size
of that variable, whether it is initialized, and for static and
dynamic linking.  The conformtest whitelist entry is removed as well.

Tested for x86_64, x86, mips64 and powerpc, including looking at
objdump --dynamic-syms output to make sure the expected sets of
symbols were aliases.  Also spot-tested that a binary built with old
glibc works properly (i.e. gets signgam set) when run with new glibc.

	[BZ #15421]
	* sysdeps/ieee754/s_signgam.c (signgam): Rename to __signgam,
	initialize with 0 and define as weak alias of __signgam.
	* include/math.h [!_ISOMAC] (__signgam): Declare.
	* math/Makefile (libm-calls): Add w_lgamma_compat.
	(tests): Add test-signgam-uchar, test-signgam-uchar-init,
	test-signgam-uint, test-signgam-uint-init, test-signgam-ullong and
	test-signgam-ullong-init.
	(tests-static): Add test-signgam-uchar-static,
	test-signgam-uchar-init-static, test-signgam-uint-static,
	test-signgam-uint-init-static, test-signgam-ullong-static and
	test-signgam-ullong-init-static.
	(CFLAGS-test-signgam-uchar.c): New variable.
	(CFLAGS-test-signgam-uchar-init.c): Likewise.
	(CFLAGS-test-signgam-uchar-static.c): Likewise.
	(CFLAGS-test-signgam-uchar-init-static.c): Likewise.
	(CFLAGS-test-signgam-uint.c): Likewise.
	(CFLAGS-test-signgam-uint-init.c): Likewise.
	(CFLAGS-test-signgam-uint-static.c): Likewise.
	(CFLAGS-test-signgam-uint-init-static.c): Likewise.
	(CFLAGS-test-signgam-ullong.c): Likewise.
	(CFLAGS-test-signgam-ullong-init.c): Likewise.
	(CFLAGS-test-signgam-ullong-static.c): Likewise.
	(CFLAGS-test-signgam-ullong-init-static.c): Likewise.
	* math/Versions (libm): Add GLIBC_2.23.
	* math/lgamma-compat.h: New file.
	* math/test-signgam-main.c: Likewise.
	* math/test-signgam-uchar-init-static.c: Likewise.
	* math/test-signgam-uchar-init.c: Likewise.
	* math/test-signgam-uchar-static.c: Likewise.
	* math/test-signgam-uchar.c: Likewise.
	* math/test-signgam-uint-init-static.c: Likewise.
	* math/test-signgam-uint-init.c: Likewise.
	* math/test-signgam-uint-static.c: Likewise.
	* math/test-signgam-uint.c: Likewise.
	* math/test-signgam-ullong-init-static.c: Likewise.
	* math/test-signgam-ullong-init.c: Likewise.
	* math/test-signgam-ullong-static.c: Likewise.
	* math/test-signgam-ullong.c: Likewise.
	* math/w_lgamma.c: Rename to w_lgamma_main.c and replace by
	wrapper of w_lgamma_main.c.
	* math/w_lgamma_compat.c: New file.
	* math/w_lgamma_compatf.c: Likewise.
	* math/w_lgamma_compatl.c: Likewise.
	* math/w_lgamma_main.c: New file.  Based on w_lgamma.c.  Include
	<lgamma-compat.h>.  Condition contents on [BUILD_LGAMMA].  Support
	defining compatibility symbols.
	(__lgamma): Change to LGFUNC (__lgamma).  Use CALL_LGAMMA.
	* math/w_lgammaf.c: Rename to w_lgammaf_main.c and replace by
	wrapper of w_lgammaf_main.c.
	* math/w_lgammaf_main.c: New file.  Based on w_lgammaf.c.  Include
	<lgamma-compat.h>.  Condition contents on [BUILD_LGAMMA].  Support
	defining compatibility symbols.
	(__lgammaf): Change to LGFUNC (__lgammaf).  Use CALL_LGAMMA.
	* math/w_lgammal.c: Rename to w_lgammal_main.c and replace by
	wrapper of w_lgammal_main.c.
	* math/w_lgammal_main.c: New file.  Based on w_lgammal.c.  Include
	<lgamma-compat.h>.  Condition contents on [BUILD_LGAMMA].  Support
	defining compatibility symbols.
	(__lgammal): Change to LGFUNC (__lgammal).  Use CALL_LGAMMA.
	* sysdeps/ia64/fpu/lgamma-compat.h: New file.
	* sysdeps/ia64/fpu/w_lgamma.c: Move to ....
	* sysdeps/ia64/fpu/w_lgamma_main.c: ...here.  Include
	<lgamma-compat.h>.
	(__ieee754_lgamma): Change to LGFUNC (lgamma).  Use CALL_LGAMMA.
	(__ieee754_gamma): Define as alias.
	* sysdeps/ia64/fpu/w_lgammaf.c: Move to ....
	* sysdeps/ia64/fpu/w_lgammaf_main.c: ...here.  Include
	<lgamma-compat.h>.
	(__ieee754_lgammaf): Change to LGFUNC (lgammaf).  Use CALL_LGAMMA.
	(__ieee754_gammaf): Define as alias.
	* sysdeps/ia64/fpu/w_lgammal.c: Move to ....
	* sysdeps/ia64/fpu/w_lgammal_main.c: ...here.  Include
	<lgamma-compat.h>.
	(__ieee754_lgammal): Change to LGFUNC (lgammal).  Use CALL_LGAMMA.
	(__ieee754_gammal): Define as alias.
	* sysdeps/ieee754/ldbl-opt/w_lgamma.c: Move to ....
	* sysdeps/ieee754/ldbl-opt/w_lgamma_compat.c: ...here.  Include
	<math/w_lgamma_compat.c>.
	[LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)] (__lgammal_dbl_compat):
	Define as alias of __lgamma_compat and use in defining lgammal.
	* sysdeps/ieee754/ldbl-opt/w_lgammal.c: Move to ....
	* sysdeps/ieee754/ldbl-opt/w_lgamma_compatl.c: ...here.  Include
	<math/lgamma-compat.h> and <math/w_lgamma_compatl.c>.
	(USE_AS_COMPAT): New macro.
	(LGAMMA_OLD_VER): Undefine and redefine.
	(lgammal): Do not define here.
	(gammal): Only define here if [GAMMA_ALIAS].
	* conform/linknamespace.pl (@whitelist): Remove signgam.
	* sysdeps/nacl/libm.abilist: Update.
	* sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
 2015-11-20 22:49:59 +00:00
Florian Weimer
8c77b6ad40 Simplify the abilist format 
The new format lists the version on each line, as in:

	VERSION SYMBOL TYPE [VALUE]

This makes it easier to process the files with line-oriented tools.

The abilist files were converted with this awk script:

/^[^ ]/ { version = $1 }
/^ / { print version, substr($0, 2) }

And sorted under the "C" locale with sort.
 2015-11-06 13:58:53 +01:00
Mark Wielaard
8b7b7f75d9 Add LFS support for fts functions (bug 11460) 
fts didn't have large-file support yet and fts.h had an #error preventing
usage when _FILE_OFFSET_BITS was set. This required nasty workarounds for
programs using fts with LFS. This patch implements LFS support for fts by
adding FTS64 and FTENT64 variants plus fts64 functions. Which are simple
aliases for 64bit off_t arches.

Also includes a simple testcase for some of the fts functions with or
without LFS enabled.

	[BZ #11460]
	* io/Makefile (routines): Add fts64.
	(tests): Add tst-fts and tst-fts-lfs.
	(CFLAGS-fts64.c): New.
	* io/Versions (GLIBC_2.23): New.
	* io/fts.c: Replace FTS with FTSOBJ, FTSENT with FTSENTRY. Use
	function defines FTS_OPEN, FTS_CLOSE, FTS_READ, FTS_SET and
	FTS_CHILDREN. Define FTSOBJ, FTSENTRY, FTS_OPEN, FTS_CLOSE,
	FTS_READ, FTS_SET, FTS_CHILDREN, INO_T, STAT and LSTAT if necessary.
	* io/fts.h (FTS64): New if _USE_LARGEFILE64.
	(FTSENT64): Likewise.
	(fts64_children): Likewise.
	(fts64_close): Likewise.
	(fts64_open): Likewise.
	(fts64_read): Likewise.
	(fts64_set): Likewise.
	* io/fts64.c: New file.
	* io/tst-fts.c: New test.
	* io/tst-fts-lfs.c: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/libc.abilist (GLIBC_2.23): Add
	GLIBC_2.23, fts64_children, fts64_close, fts64_open, fts64_read and
	fts64_set.
	* sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/arm/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
	* sysdeps/wordsize-64/fts.c: New file.
	* sysdeps/wordsize-64/fts64.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/fts.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/fts64.c: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/fts.c: likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/fts64.c: likewise.
 2015-11-06 11:24:16 +01:00
H.J. Lu
fb1cf10811 Add INLINE_SYSCALL_ERROR_RETURN_VALUE 
For ia32 PIC, the first thing of many syscalls does is to call
__x86.get_pc_thunk.reg to load PC into reg in case there is an error,
which is required for setting errno.  In most cases, there are no
errors.  But we still call __x86.get_pc_thunk.reg.  This patch adds
INLINE_SYSCALL_ERROR_RETURN_VALUE so that i386 can optimize setting
errno by branching to the internal __syscall_error without PLT.

With i386 INLINE_SYSCALL_ERROR_RETURN_VALUE and i386 syscall inlining
optimization for GCC 5, for sysdeps/unix/sysv/linux/fchmodat.c with
-O2 -march=i686 -mtune=generic, GCC 5.2 now generates:

<fchmodat>:
   0:	push   %ebx
   1:	mov    0x14(%esp),%eax
   5:	mov    0x8(%esp),%ebx
   9:	mov    0xc(%esp),%ecx
   d:	mov    0x10(%esp),%edx
  11:	test   $0xfffffeff,%eax
  16:	jne    38 <fchmodat+0x38>
  18:	test   $0x1,%ah
  1b:	jne    48 <fchmodat+0x48>
  1d:	mov    $0x132,%eax
  22:	call   *%gs:0x10
  29:	cmp    $0xfffff000,%eax
  2e:	ja     58 <fchmodat+0x58>
  30:	pop    %ebx
  31:	ret
  32:	lea    0x0(%esi),%esi
  38:	pop    %ebx
  39:	mov    $0xffffffea,%eax
  3e:	jmp    3f <fchmodat+0x3f>	3f: R_386_PC32	__syscall_error
  43:	nop
  44:	lea    0x0(%esi,%eiz,1),%esi
  48:	pop    %ebx
  49:	mov    $0xffffffa1,%eax
  4e:	jmp    4f <fchmodat+0x4f>	4f: R_386_PC32	__syscall_error
  53:	nop
  54:	lea    0x0(%esi,%eiz,1),%esi
  58:	pop    %ebx
  59:	jmp    5a <fchmodat+0x5a>	5a: R_386_PC32	__syscall_error

instead of

<fchmodat>:
   0:	sub    $0x8,%esp
   3:	mov    0x18(%esp),%eax
   7:	mov    %ebx,(%esp)
   a:	call   b <fchmodat+0xb>	b: R_386_PC32	__x86.get_pc_thunk.bx
   f:	add    $0x2,%ebx	11: R_386_GOTPC	_GLOBAL_OFFSET_TABLE_
  15:	mov    %edi,0x4(%esp)
  19:	test   $0xfffffeff,%eax
  1e:	jne    70 <fchmodat+0x70>
  20:	test   $0x1,%ah
  23:	jne    88 <fchmodat+0x88>
  25:	mov    0x14(%esp),%edx
  29:	mov    0x10(%esp),%ecx
  2d:	mov    0xc(%esp),%edi
  31:	xchg   %ebx,%edi
  33:	mov    $0x132,%eax
  38:	call   *%gs:0x10
  3f:	xchg   %edi,%ebx
  41:	cmp    $0xfffff000,%eax
  46:	ja     58 <fchmodat+0x58>
  48:	mov    (%esp),%ebx
  4b:	mov    0x4(%esp),%edi
  4f:	add    $0x8,%esp
  52:	ret
  53:	nop
  54:	lea    0x0(%esi,%eiz,1),%esi
  58:	mov    0x0(%ebx),%edx	5a: R_386_TLS_GOTIE	__libc_errno
  5e:	neg    %eax
  60:	mov    %eax,%gs:(%edx)
  63:	mov    $0xffffffff,%eax
  68:	jmp    48 <fchmodat+0x48>
  6a:	lea    0x0(%esi),%esi
  70:	mov    0x0(%ebx),%eax	72: R_386_TLS_GOTIE	__libc_errno
  76:	movl   $0x16,%gs:(%eax)
  7d:	mov    $0xffffffff,%eax
  82:	jmp    48 <fchmodat+0x48>
  84:	lea    0x0(%esi,%eiz,1),%esi
  88:	mov    0x0(%ebx),%eax	8a: R_386_TLS_GOTIE	__libc_errno
  8e:	movl   $0x5f,%gs:(%eax)
  95:	mov    $0xffffffff,%eax
  9a:	jmp    48 <fchmodat+0x48>

	* sysdeps/unix/sysv/linux/sysdep.h: New file.
	* sysdeps/unix/sysv/linux/i386/sysdep.c: Likewise.
	* sysdeps/unix/sysv/linux/alpha/sysdep.h: Include
	<sysdeps/unix/sysv/linux/sysdep.h>.
	* sysdeps/unix/sysv/linux/arm/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/generic/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/hppa/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/ia64/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/m68k/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/Makefile [$(subdir) == csu]
	(sysdep-dl-routines): Add sysdep.
	[$(subdir) == nptl] (libpthread-routines): Likewise.
	[$(subdir) == rt] (librt-routines): Likewise.
	* sysdeps/unix/sysv/linux/i386/clone.S (__clone): Don't check
	PIC when branching to SYSCALL_ERROR_LABEL.
	* sysdeps/unix/sysv/linux/i386/sysdep.S: Removed.
	* sysdeps/unix/sysv/linux/i386/sysdep.h: Include
	<sysdeps/unix/sysv/linux/sysdep.h>.
	(SYSCALL_ERROR_LABEL): Changed to __syscall_error.
	(SYSCALL_ERROR_ERRNO): Removed.
	(SYSCALL_ERROR_HANDLER): Changed to empty.
	(SYSCALL_ERROR_HANDLER_TLS_STORE): Likewise.
	(__syscall_error): New prototype.
	[IS_IN (libc)] (INLINE_SYSCALL): New macro.
	(INLINE_SYSCALL_ERROR_RETURN_VALUE): Likewise.
 2015-10-13 11:59:15 -07:00
Joseph Myers
de071d199a Move bits/atomic.h to atomic-machine.h (bug 14912). 
It was noted in
<https://sourceware.org/ml/libc-alpha/2012-09/msg00305.html> that the
bits/*.h naming scheme should only be used for installed headers.
This patch renames bits/atomic.h to atomic-machine.h to follow that
convention.

This is the only change in this series that needs to change the
filename rather than simply removing a directory level (because both
atomic.h and bits/atomic.h exist at present).

Tested for x86_64 (testsuite, and that installed stripped shared
libraries are unchanged by the patch).

	[BZ #14912]
	* sysdeps/aarch64/bits/atomic.h: Move to ...
	* sysdeps/aarch64/atomic-machine.h: ...here.
	(_AARCH64_BITS_ATOMIC_H): Rename macro to
	_AARCH64_ATOMIC_MACHINE_H.
	* sysdeps/alpha/bits/atomic.h: Move to ...
	* sysdeps/alpha/atomic-machine.h: ...here.
	* sysdeps/arm/bits/atomic.h: Move to ...
	* sysdeps/arm/atomic-machine.h: ...here.  Update comments.
	* bits/atomic.h: Move to ...
	* sysdeps/generic/atomic-machine.h: ...here.
	(_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H.
	* sysdeps/i386/bits/atomic.h: Move to ...
	* sysdeps/i386/atomic-machine.h: ...here.
	* sysdeps/ia64/bits/atomic.h: Move to ...
	* sysdeps/ia64/atomic-machine.h: ...here.
	* sysdeps/m68k/coldfire/bits/atomic.h: Move to ...
	* sysdeps/m68k/coldfire/atomic-machine.h: ...here.
	(_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H.
	* sysdeps/m68k/m680x0/m68020/bits/atomic.h: Move to ...
	* sysdeps/m68k/m680x0/m68020/atomic-machine.h: ...here.
	* sysdeps/microblaze/bits/atomic.h: Move to ...
	* sysdeps/microblaze/atomic-machine.h: ...here.
	* sysdeps/mips/bits/atomic.h: Move to ...
	* sysdeps/mips/atomic-machine.h: ...here.
	(_MIPS_BITS_ATOMIC_H): Rename macro to _MIPS_ATOMIC_MACHINE_H.
	* sysdeps/powerpc/bits/atomic.h: Move to ...
	* sysdeps/powerpc/atomic-machine.h: ...here.  Update comments.
	* sysdeps/powerpc/powerpc32/bits/atomic.h: Move to ...
	* sysdeps/powerpc/powerpc32/atomic-machine.h: ...here.  Update
	comments.  Include <atomic-machine.h> instead of <bits/atomic.h>.
	* sysdeps/powerpc/powerpc64/bits/atomic.h: Move to ...
	* sysdeps/powerpc/powerpc64/atomic-machine.h: ...here.  Include
	<atomic-machine.h> instead of <bits/atomic.h>.
	* sysdeps/s390/bits/atomic.h: Move to ...
	* sysdeps/s390/atomic-machine.h: ...here.
	* sysdeps/sparc/sparc32/bits/atomic.h: Move to ...
	* sysdeps/sparc/sparc32/atomic-machine.h: ...here.
	(_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H.
	* sysdeps/sparc/sparc32/sparcv9/bits/atomic.h: Move to ...
	* sysdeps/sparc/sparc32/sparcv9/atomic-machine.h: ...here.
	* sysdeps/sparc/sparc64/bits/atomic.h: Move to ...
	* sysdeps/sparc/sparc64/atomic-machine.h: ...here.
	* sysdeps/tile/bits/atomic.h: Move to ...
	* sysdeps/tile/atomic-machine.h: ...here.
	* sysdeps/tile/tilegx/bits/atomic.h: Move to ...
	* sysdeps/tile/tilegx/atomic-machine.h: ...here.  Include
	<sysdeps/tile/atomic-machine.h> instead of
	<sysdeps/tile/bits/atomic.h>.
	(_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H.
	* sysdeps/tile/tilepro/bits/atomic.h: Move to ...
	* sysdeps/tile/tilepro/atomic-machine.h: ...here.  Include
	<sysdeps/tile/atomic-machine.h> instead of
	<sysdeps/tile/bits/atomic.h>.
	(_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H.
	* sysdeps/unix/sysv/linux/arm/bits/atomic.h: Move to ...
	* sysdeps/unix/sysv/linux/arm/atomic-machine.h: ...here.  Include
	<sysdeps/arm/atomic-machine.h> instead of
	<sysdeps/arm/bits/atomic.h>.
	* sysdeps/unix/sysv/linux/hppa/bits/atomic.h: Move to ...
	* sysdeps/unix/sysv/linux/hppa/atomic-machine.h: ...here.
	(_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H.
	* sysdeps/unix/sysv/linux/m68k/coldfire/bits/atomic.h: Move to ...
	* sysdeps/unix/sysv/linux/m68k/coldfire/atomic-machine.h: ...here.
	(_BITS_ATOMIC_H): Rename macro to _ATOMIC_MACHINE_H.
	* sysdeps/unix/sysv/linux/nios2/bits/atomic.h: Move to ...
	* sysdeps/unix/sysv/linux/nios2/atomic-machine.h: ...here.
	(_NIOS2_BITS_ATOMIC_H): Rename macro to _NIOS2_ATOMIC_MACHINE_H.
	* sysdeps/unix/sysv/linux/sh/bits/atomic.h: Move to ...
	* sysdeps/unix/sysv/linux/sh/atomic-machine.h: ...here.
	* sysdeps/x86_64/bits/atomic.h: Move to ...
	* sysdeps/x86_64/atomic-machine.h: ...here.
	* include/atomic.h: Include <atomic-machine.h> instead of
	<bits/atomic.h>.
 2015-09-11 20:00:19 +00:00
Joseph Myers
0f4341fbec Rename bits/m68k-vdso.h to m68k-vdso.h (bug 14912). 
It was noted in
<https://sourceware.org/ml/libc-alpha/2012-09/msg00305.html> that the
bits/*.h naming scheme should only be used for installed headers.
This patch renames bits/m68k-vdso.h to plain m68k-vdso.h to follow
that convention.

	[BZ #14912]
	* sysdeps/unix/sysv/linux/m68k/bits/m68k-vdso.h: Move to ...
	* sysdeps/unix/sysv/linux/m68k/m68k-vdso.h: ...here.
	* sysdeps/unix/sysv/linux/m68k/coldfire/bits/atomic.h: Include
	<m68k-vdso.h> instead of <bits/m68k-vdso.h>.
	* sysdeps/unix/sysv/linux/m68k/init-first.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m68k-helpers.S: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m68k-vdso.c: Likewise.
 2015-09-04 14:46:21 +00:00
Andreas Schwab
be481652f2 Remove __ASSUME_IPC64 
PowerPC has always used __IPC_64 like most other architectures, which
means that __ASSUME_IPC64 can be always true.  Also, all other
architecture implementations that use the ipc syscall are effectively
identical to the generic version and can be removed.
 2015-08-24 10:53:49 +02:00
Andreas Schwab
bb1d31d06e Properly terminate FDE in makecontext for m68k (bug 18635) 2015-08-05 23:35:28 +02:00
Adhemerval Zanella
fdb7d390dd libio: fmemopen rewrite to POSIX compliance 
This patch added a new fmemopen version, for glibc 2.22, that aims to be
POSIX complaint.  It fixes some long-stading glibc fmemopen issues, such
as:

* it changes the way fseek with SEEK_END works on fmemopen to seek
  relative to buffer size instead of first '\0'.  This is default mode and
  'b' opening mode does not change internal behavior (bz#6544).

* fix apending opening mode to use as start position either first null
  byte of len specified in function call (bz#13152 and #13151).

* remove binary option 'b' and internal different handling (bz#12836)

* fix seek/SEE_END with negative values (bz#14292).

A compatibility symbol is provided to with old behavior for older symbols
version (2.2.5).

	* include/stdio.h (fmemopen): Remove hidden prototype.
	(__fmemopen): Add new hidden prototype.
	* libio/Makefile: Add oldfmemopen object.
	* libio/Versions [GLIBC_2.22]: Add new fmemopen symbol.
	* libio/fmemopen.c (__fmemopen): Function rewrite to be POSIX
	compliance.
	* libio/oldfmemopen.c: New file: old fmemopen implementation for
	symbol compatibility.
	* stdio-common/Makefile [tests]: Add new tst-fmemopen3.
	* stdio-common/psiginfo.c [psiginfo]: Call __fmemopen instead of
	fmemopen.
	* stdio-common/tst-fmemopen3.c: New file: more fmemopen tests, focus
	on append and read mode.
	* sysdeps/unix/sysv/linux/aarch64/libc.abilist [GLIBC_2.22]: Add
	fmemopen.
	* sysdeps/unix/sysv/linux/alpha/libc.abilist [GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/arm/libc.abilist [GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/i386/libc.abilist [GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libc.abilist [GLIBC_2.22]:
	Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist [GLIBC_2.22]:
	Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libc.abilist [GLIBC_2.22]:
	Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist [GLIBC_2.22]:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist [GLIBC_2.22]:
	Likewise.
	* sysdeps/unix/sysv/linux/sh/libc.abilist [GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist [GLIBC_2.22]:
	Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist [GLIBC_2.22]:
	Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist [GLIBC_2.22]:
	Likewise.
	* sysdeps/unix/sysv/linux/hppa/libc.abilist [GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libc.abilist [GLIBC_2.22]: Likewise.
 2015-07-08 12:07:21 -03:00
Adhemerval Zanella
60dce8b904 Remove socket.S implementation 
This patch removes the socket.S implementation for all ports and replace
it by a C implementation using socketcall.  For ports that implement
the syscall directly, there is no change.

The patch idea is to simplify the socket function implementation that
uses the socketcall to be based on C implemetation instead of a pseudo
assembly implementation with arch specific parts.  The patch then remove
the assembly implementatation for the ports which uses socketcall
(i386, microblaze, mips, powerpc, sparc, m68k, s390 and sh).

I have cross-build GLIBC for afore-mentioned ports and tested on both
i386 and ppc32 without regressions.
 2015-05-22 17:38:06 -03:00
Roland McGrath
ac9e0e5e40 Clean up sysdep-dl-routines variable. 2015-02-06 10:42:08 -08:00
Andreas Schwab
45819cbca1 m68k/coldfire: avoid warning about volatile register variables 2015-01-25 23:36:02 +01:00
Joseph Myers
b168057aaa Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
Siddhesh Poyarekar
4f41c682f3 Remove NOT_IN_libc 
Replace with !IS_IN (libc).  This completes the transition from
the IS_IN/NOT_IN macros to the IN_MODULE macro set.

The generated code is unchanged on x86_64.

	* stdlib/isomac.c (fmt): Replace NOT_IN_libc with IN_MODULE.
	(get_null_defines): Adjust.
	* sunrpc/Makefile: Adjust comment.
	* Makerules (CPPFLAGS-nonlib): Remove NOT_IN_libc.
	* elf/Makefile (CPPFLAGS-sotruss-lib): Likewise.
	(CFLAGS-interp.c): Likewise.
	(CFLAGS-ldconfig.c): Likewise.
	(CPPFLAGS-.os): Likewise.
	* elf/rtld-Rules (rtld-CPPFLAGS): Likewise.
	* extra-lib.mk (CPPFLAGS-$(lib)): Likewise.
	* extra-modules.mk (extra-modules.mk): Likewise.
	* iconv/Makefile (CPPFLAGS-iconvprogs): Likewise.
	* locale/Makefile (CPPFLAGS-locale_programs): Likewise.
	* malloc/Makefile (CPPFLAGS-memusagestat): Likewise.
	* nscd/Makefile (CPPFLAGS-nscd): Likewise.
	* nss/Makefile (CPPFLAGS-nss_test1): Likewise.
	* stdlib/Makefile (CFLAGS-tst-putenvmod.c): Likewise.
	* sysdeps/gnu/Makefile ($(objpfx)errlist-compat.c): Likewise.
	* sysdeps/unix/sysv/linux/Makefile (CPPFLAGS-lddlibc4): Likewise.
	* iconvdata/Makefile (CPPFLAGS): Likewise.
	(cpp-srcs-left): Add libof for all iconvdata routines.
	* bits/stdio-lock.h: Replace NOT_IN_libc with IS_IN.
	* include/assert.h: Likewise.
	* include/ctype.h: Likewise.
	* include/errno.h: Likewise.
	* include/libc-symbols.h: Likewise.
	* include/math.h: Likewise.
	* include/netdb.h: Likewise.
	* include/resolv.h: Likewise.
	* include/stdio.h: Likewise.
	* include/stdlib.h: Likewise.
	* include/string.h: Likewise.
	* include/sys/stat.h: Likewise.
	* include/wctype.h: Likewise.
	* intl/l10nflist.c: Likewise.
	* libidn/idn-stub.c: Likewise.
	* libio/libioP.h: Likewise.
	* nptl/libc_multiple_threads.c: Likewise.
	* nptl/pthreadP.h: Likewise.
	* posix/regex_internal.h: Likewise.
	* resolv/res_hconf.c: Likewise.
	* sysdeps/arm/armv7/multiarch/memcpy.S: Likewise.
	* sysdeps/arm/memmove.S: Likewise.
	* sysdeps/arm/sysdep.h: Likewise.
	* sysdeps/generic/_itoa.h: Likewise.
	* sysdeps/generic/symbol-hacks.h: Likewise.
	* sysdeps/gnu/errlist.awk: Likewise.
	* sysdeps/gnu/errlist.c: Likewise.
	* sysdeps/i386/i586/memcpy.S: Likewise.
	* sysdeps/i386/i586/memset.S: Likewise.
	* sysdeps/i386/i686/memcpy.S: Likewise.
	* sysdeps/i386/i686/memmove.S: Likewise.
	* sysdeps/i386/i686/mempcpy.S: Likewise.
	* sysdeps/i386/i686/memset.S: Likewise.
	* sysdeps/i386/i686/multiarch/bcopy.S: Likewise.
	* sysdeps/i386/i686/multiarch/bzero.S: Likewise.
	* sysdeps/i386/i686/multiarch/memchr-sse2-bsf.S: Likewise.
	* sysdeps/i386/i686/multiarch/memchr-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/memchr.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcmp-sse4.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcmp-ssse3.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcmp.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcpy-ssse3-rep.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcpy-ssse3.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcpy.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcpy_chk.S: Likewise.
	* sysdeps/i386/i686/multiarch/memmove.S: Likewise.
	* sysdeps/i386/i686/multiarch/memmove_chk.S: Likewise.
	* sysdeps/i386/i686/multiarch/mempcpy.S: Likewise.
	* sysdeps/i386/i686/multiarch/mempcpy_chk.S: Likewise.
	* sysdeps/i386/i686/multiarch/memrchr-c.c: Likewise.
	* sysdeps/i386/i686/multiarch/memrchr-sse2-bsf.S: Likewise.
	* sysdeps/i386/i686/multiarch/memrchr-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/memrchr.S: Likewise.
	* sysdeps/i386/i686/multiarch/memset-sse2-rep.S: Likewise.
	* sysdeps/i386/i686/multiarch/memset-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/memset.S: Likewise.
	* sysdeps/i386/i686/multiarch/memset_chk.S: Likewise.
	* sysdeps/i386/i686/multiarch/rawmemchr.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcat-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcat-ssse3.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcat.S: Likewise.
	* sysdeps/i386/i686/multiarch/strchr-sse2-bsf.S: Likewise.
	* sysdeps/i386/i686/multiarch/strchr-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/strchr.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcmp-sse4.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcmp-ssse3.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcmp.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcpy-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcpy-ssse3.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcpy.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcspn.S: Likewise.
	* sysdeps/i386/i686/multiarch/strlen-sse2-bsf.S: Likewise.
	* sysdeps/i386/i686/multiarch/strlen-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/strlen.S: Likewise.
	* sysdeps/i386/i686/multiarch/strnlen.S: Likewise.
	* sysdeps/i386/i686/multiarch/strrchr-sse2-bsf.S: Likewise.
	* sysdeps/i386/i686/multiarch/strrchr-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/strrchr.S: Likewise.
	* sysdeps/i386/i686/multiarch/strspn.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcschr-c.c: Likewise.
	* sysdeps/i386/i686/multiarch/wcschr-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcschr.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcscmp-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcscmp.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcscpy-c.c: Likewise.
	* sysdeps/i386/i686/multiarch/wcscpy-ssse3.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcscpy.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcslen-c.c: Likewise.
	* sysdeps/i386/i686/multiarch/wcslen-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcslen.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcsrchr-c.c: Likewise.
	* sysdeps/i386/i686/multiarch/wcsrchr-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcsrchr.S: Likewise.
	* sysdeps/i386/i686/multiarch/wmemcmp-c.c: Likewise.
	* sysdeps/i386/i686/multiarch/wmemcmp.S: Likewise.
	* sysdeps/ia64/fpu/libm-symbols.h: Likewise.
	* sysdeps/nptl/bits/libc-lock.h: Likewise.
	* sysdeps/nptl/bits/libc-lockP.h: Likewise.
	* sysdeps/nptl/bits/stdio-lock.h: Likewise.
	* sysdeps/posix/closedir.c: Likewise.
	* sysdeps/posix/opendir.c: Likewise.
	* sysdeps/posix/readdir.c: Likewise.
	* sysdeps/posix/rewinddir.c: Likewise.
	* sysdeps/powerpc/novmx-sigjmp.c: Likewise.
	* sysdeps/powerpc/powerpc32/__longjmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/bsd-_setjmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/fpu/__longjmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/fpu/setjmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/bzero.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memchr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memcmp-ppc32.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memcmp.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-ppc32.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memcpy.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memmove.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/mempcpy.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memrchr-ppc32.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memrchr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memset-ppc32.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memset.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/rawmemchr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strcasecmp.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strcasecmp_l.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strchr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strlen-ppc32.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strlen.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strncase.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strncase_l.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strncmp-ppc32.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strncmp.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strnlen.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcschr-ppc32.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcschr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy-ppc32.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcsrchr-ppc32.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcsrchr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wordcopy.c: Likewise.
	* sysdeps/powerpc/powerpc32/power6/memset.S: Likewise.
	* sysdeps/powerpc/powerpc32/setjmp.S: Likewise.
	* sysdeps/powerpc/powerpc64/__longjmp.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/bzero.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memcmp-ppc64.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memcmp.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memcpy-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memcpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memmove-ppc64.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memmove.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/mempcpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memrchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memset-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memset.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/rawmemchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/stpcpy-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/stpcpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/stpncpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcasecmp.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcasecmp_l.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcat.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strchrnul.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcmp-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcmp.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcpy-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcspn.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strlen-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strlen.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncase.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncase_l.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncat.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncmp-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncmp.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncpy-ppc64.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strnlen.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strpbrk.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strrchr-ppc64.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strrchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strspn-ppc64.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strspn.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/wcschr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/wcscpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/wcsrchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/wordcopy.c: Likewise.
	* sysdeps/powerpc/powerpc64/setjmp.S: Likewise.
	* sysdeps/s390/s390-32/multiarch/ifunc-resolve.c: Likewise.
	* sysdeps/s390/s390-32/multiarch/memcmp.S: Likewise.
	* sysdeps/s390/s390-32/multiarch/memcpy.S: Likewise.
	* sysdeps/s390/s390-32/multiarch/memset.S: Likewise.
	* sysdeps/s390/s390-64/multiarch/ifunc-resolve.c: Likewise.
	* sysdeps/s390/s390-64/multiarch/memcmp.S: Likewise.
	* sysdeps/s390/s390-64/multiarch/memcpy.S: Likewise.
	* sysdeps/s390/s390-64/multiarch/memset.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-niagara1.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-niagara2.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-niagara4.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memset-niagara1.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memset-niagara4.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memset.S: Likewise.
	* sysdeps/unix/alpha/sysdep.S: Likewise.
	* sysdeps/unix/alpha/sysdep.h: Likewise.
	* sysdeps/unix/make-syscalls.sh: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/alpha/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/arm/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/arm/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/getpid.c: Likewise.
	* sysdeps/unix/sysv/linux/hppa/nptl/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/hppa/nptl/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/ia64/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/ia64/sysdep.S: Likewise.
	* sysdeps/unix/sysv/linux/ia64/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/lowlevellock-futex.h: Likewise.
	* sysdeps/unix/sysv/linux/m68k/bits/m68k-vdso.h: Likewise.
	* sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/m68k/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/not-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/longjmp_chk.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/sysdep.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sysdep.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/sh/lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/sh/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/sparc/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/brk.S: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/tile/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/tile/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/tile/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/tile/waitpid.S: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise.
	* sysdeps/wordsize-32/symbol-hacks.h: Likewise.
	* sysdeps/x86_64/memcpy.S: Likewise.
	* sysdeps/x86_64/memmove.c: Likewise.
	* sysdeps/x86_64/memset.S: Likewise.
	* sysdeps/x86_64/multiarch/init-arch.h: Likewise.
	* sysdeps/x86_64/multiarch/memcmp-sse4.S: Likewise.
	* sysdeps/x86_64/multiarch/memcmp-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/memcmp.S: Likewise.
	* sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S: Likewise.
	* sysdeps/x86_64/multiarch/memcpy-ssse3-back.S: Likewise.
	* sysdeps/x86_64/multiarch/memcpy-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/memcpy.S: Likewise.
	* sysdeps/x86_64/multiarch/memcpy_chk.S: Likewise.
	* sysdeps/x86_64/multiarch/memmove.c: Likewise.
	* sysdeps/x86_64/multiarch/mempcpy.S: Likewise.
	* sysdeps/x86_64/multiarch/mempcpy_chk.S: Likewise.
	* sysdeps/x86_64/multiarch/memset-avx2.S: Likewise.
	* sysdeps/x86_64/multiarch/memset.S: Likewise.
	* sysdeps/x86_64/multiarch/memset_chk.S: Likewise.
	* sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S: Likewise.
	* sysdeps/x86_64/multiarch/strcat-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/strcat.S: Likewise.
	* sysdeps/x86_64/multiarch/strchr-sse2-no-bsf.S: Likewise.
	* sysdeps/x86_64/multiarch/strchr.S: Likewise.
	* sysdeps/x86_64/multiarch/strcmp-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/strcmp.S: Likewise.
	* sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S: Likewise.
	* sysdeps/x86_64/multiarch/strcpy-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/strcpy.S: Likewise.
	* sysdeps/x86_64/multiarch/strcspn.S: Likewise.
	* sysdeps/x86_64/multiarch/strspn.S: Likewise.
	* sysdeps/x86_64/multiarch/wcscpy-c.c: Likewise.
	* sysdeps/x86_64/multiarch/wcscpy-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/wcscpy.S: Likewise.
	* sysdeps/x86_64/multiarch/wmemcmp-c.c: Likewise.
	* sysdeps/x86_64/multiarch/wmemcmp.S: Likewise.
	* sysdeps/x86_64/strcmp.S: Likewise.
 2014-11-24 15:03:45 +05:30
Siddhesh Poyarekar
a38484851a Remove IS_IN_rtld 
Replace with IS_IN (rtld).  Generated code is unchanged on
x86_64.

        * elf/Makefile (CPPFLAGS-.os): Remove IS_IN_rtld.
        * elf/dl-open.c: Use IS_IN (rtld) instead if IS_IN_rtld.
        * elf/rtld-Rules: Likewise.
        * elf/setup-vdso.h: Likewise.
        * include/assert.h: Likewise.
        * include/bits/stdlib-float.h: Likewise.
        * include/errno.h: Likewise.
        * include/sys/stat.h: Likewise.
        * include/unistd.h: Likewise.
        * sysdeps/aarch64/setjmp.S: Likewise.
        * sysdeps/alpha/setjmp.S: Likewise.
        * sysdeps/arm/__longjmp.S: Likewise.
        * sysdeps/arm/aeabi_unwind_cpp_pr1.c: Likewise.
        * sysdeps/arm/setjmp.S: Likewise.
        * sysdeps/arm/sysdep.h: Likewise.
        * sysdeps/generic/_itoa.h: Likewise.
        * sysdeps/generic/dl-sysdep.h: Likewise.
        * sysdeps/generic/ldsodefs.h: Likewise.
        * sysdeps/i386/dl-tls.h: Likewise.
        * sysdeps/i386/setjmp.S: Likewise.
        * sysdeps/m68k/setjmp.c: Likewise.
        * sysdeps/mach/hurd/dl-execstack.c: Likewise.
        * sysdeps/mach/hurd/opendir.c: Likewise.
        * sysdeps/posix/getcwd.c: Likewise.
        * sysdeps/posix/opendir.c: Likewise.
        * sysdeps/posix/profil.c: Likewise.
        * sysdeps/powerpc/dl-procinfo.h: Likewise.
        * sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S: Likewise.
        * sysdeps/powerpc/powerpc32/fpu/setjmp-common.S: Likewise.
        * sysdeps/powerpc/powerpc32/power4/multiarch/init-arch.h: Likewise.
        * sysdeps/powerpc/powerpc32/setjmp-common.S: Likewise.
        * sysdeps/powerpc/powerpc64/__longjmp-common.S: Likewise.
        * sysdeps/powerpc/powerpc64/setjmp-common.S: Likewise.
        * sysdeps/s390/dl-tls.h: Likewise.
        * sysdeps/s390/s390-32/setjmp.S: Likewise.
        * sysdeps/s390/s390-64/setjmp.S: Likewise.
        * sysdeps/sh/sh3/setjmp.S: Likewise.
        * sysdeps/sh/sh4/setjmp.S: Likewise.
        * sysdeps/unix/alpha/sysdep.h: Likewise.
        * sysdeps/unix/arm/sysdep.S: Likewise.
        * sysdeps/unix/i386/sysdep.S: Likewise.
        * sysdeps/unix/sysv/linux/aarch64/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/getcwd.c: Likewise.
        * sysdeps/unix/sysv/linux/hppa/nptl/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/i386/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/i386/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/ia64/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/ia64/setjmp.S: Likewise.
        * sysdeps/unix/sysv/linux/ia64/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/lowlevellock-futex.h: Likewise.
        * sysdeps/unix/sysv/linux/m68k/bits/m68k-vdso.h: Likewise.
        * sysdeps/unix/sysv/linux/m68k/m68k-helpers.S: Likewise.
        * sysdeps/unix/sysv/linux/microblaze/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/powerpc/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/s390/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/sh/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/sh/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/sparc/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/tile/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/tile/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise.
        * sysdeps/unix/x86_64/sysdep.S: Likewise.
        * sysdeps/x86_64/setjmp.S: Likewise.
 2014-11-24 11:41:48 +05:30
Siddhesh Poyarekar
ce9f10f7f0 Remove IS_IN_libpthread 
Replace with IS_IN (libpthread).  Generated code unchanged on
x86_64.

	* nptl/lowlevellock.c: Use IS_IN instead of IS_IN_libpthread.
	* nptl/pthreadP.h: Likewise.
	* nptl_db/structs.def: Likewise.
	* sysdeps/arm/sysdep.h: Likewise.
	* sysdeps/nptl/bits/libc-lock.h: Likewise.
	* sysdeps/nptl/bits/libc-lockP.h: Likewise.
	* sysdeps/sparc/sparc32/lowlevellock.c: Likewise.
	* sysdeps/unix/alpha/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/arm/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/hppa/nptl/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/ia64/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/not-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/tile/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/tile/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/tile/waitpid.S: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/cancellation.S: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h: Likewise.
 2014-11-24 11:41:46 +05:30
Siddhesh Poyarekar
016afc75cd Remove IS_IN_librt 
Replace with IS_IN (librt).  Generated code unchanged on x86_64

        * include/mqueue.h: Use IS_IN instead of IS_IN_librt.
        * nptl/pthreadP.h: Likewise.
        * sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/arm/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/hppa/nptl/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/i386/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/ia64/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/mips/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/not-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/sh/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/sparc/sparc32/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/tile/sysdep-cancel.h: Likewise.
        * sysdeps/unix/sysv/linux/tile/waitpid.S: Likewise.
        * sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h: Likewise.
 2014-11-24 11:41:45 +05:30
Torvald Riegel
1ea339b697 Add arch-specific configuration for C11 atomics support. 
This sets __HAVE_64B_ATOMICS if provided.  It also sets
USE_ATOMIC_COMPILER_BUILTINS to true if the existing atomic ops use the
__atomic* builtins (aarch64, mips partially) or if this has been
tested (x86_64); otherwise, this is set to false so that C11 atomics will
be based on the existing atomic operations.
 2014-11-20 11:57:38 +01:00
Andreas Schwab
1400983e04 m68k: don't expect PLT reference to __tls_get_addr 2014-11-07 17:39:55 +01:00
Joseph Myers
2c46a66a3a Remove __libc_waitpid function name. 
Continuing the removal of unused __libc_* function names, this patch
removes the __libc_waitpid name.

Tested for x86_64 (testsuite, and that disassembly of installed shared
libraries is unchanged by the patch; __waitpid, which is exported from
shared libc, changes from weak to strong on some configurations, which
is of no significance).

	* include/sys/wait.h (__libc_waitpid): Remove declaration.
	* posix/waitpid.c (__libc_waitpid): Rename to __waitpid.
	(__waitpid): Don't define as alias.  Use libc_hidden_def not
	libc_hidden_weak.
	(waitpid): Define as alias of __waitpid.
	* sysdeps/unix/bsd/waitpid.c (__libc_waitpid): Rename to
	__waitpid.
	(__waitpid): Don't define as alias.  Use libc_hidden_def not
	libc_hidden_weak.
	(waitpid): Define as alias of __waitpid.
	* sysdeps/unix/sysv/linux/i386/syscalls.list (waitpid): Remove
	__libc_waitpid alias.
	* sysdeps/unix/sysv/linux/m68k/syscalls.list (waitpid): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/syscalls.list (waitpid):
	Likewise.
	* sysdeps/unix/sysv/linux/sh/syscalls.list (waitpid): Likewise.
	* sysdeps/unix/sysv/linux/sparc/syscalls.list (waitpid): Likewise.
	* sysdeps/unix/sysv/linux/tile/waitpid.S (__libc_waitpid): Remove
	alias.
	* sysdeps/unix/sysv/linux/waitpid.c (__libc_waitpid): Rename to
	__waitpid.
	(__waitpid): Don't define as alias.  Use libc_hidden_def not
	libc_hidden_weak.
	(waitpid): Define as alias of __waitpid.
 2014-11-07 01:27:16 +00:00
Carlos O'Donell
da53d6dbc2 Run check-localpltk/textrel/execstack over ld.so. 
For maximum paranoia we run ld.so through the normal set
of tests for all of the shared libraries. This includes
running ld.so through check-localplt, check-textrel, and
check-execstack. While none of these should trigger any
failures given the way ld.so is built, it might possibly
fail if a developer does something wrong. This paranoia
was triggered by a discussion over the use of __strcpy
vs. strcpy [1] and if the symbol could leak and use the
libc.so version.

The check-localplt test fails right away because localplt.data
needs updating for all arches. By default we add 6 new symbols:
__tls_get_addr, __libc_memalign, malloc, calloc, realloc and
free. Other machines like i386, power, and s390 require some
different symbol sets e.g. ___tls_get_addr vs. __tls_get_addr
for i386.

Verified for i386
Verified for x86_64
Verified for ppc32
Verified for ppc64
Verified for ppc64le
Verified for arm
Verified for aarch64
Verified for s390
Verified for s390x
Guessed for alpha
Guessed for ia64
Guessed for m68k
Guessed for microblaze
Guessed for sparc32
Guessed for sparc64
Defaults for sh
Defaults for mips
Defaults for hppa
Defaults for tile

Machine manintainers notified to double check the data
used in localplt.data.

[1] https://sourceware.org/ml/libc-alpha/2014-10/msg00548.html
 2014-11-06 15:48:44 -05:00
Joseph Myers
a4b3624d20 Move setfsgid/setfsuid definitions to syscalls.list (bug 14138). 
Continuing the move of syscall definitions to syscalls.list, where the
removal of support for old kernel versions has made this possible,
this patch moves various definitions of setfsgid and setfsuid.

Tested for x86.

	[BZ #14138]
	* sysdeps/unix/sysv/linux/arm/setfsgid.c: Remove file.
	* sysdeps/unix/sysv/linux/arm/setfsuid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/setfsgid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/setfsuid.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/setfsgid.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/setfsuid.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/setfsgid.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/setfsuid.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/setfsgid.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/setfsuid.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/setfsgid.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/setfsuid.c: Likewise.
	* sysdeps/unix/sysv/linux/arm/syscalls.list (setfsgid): Add
	syscall.
	(setfsuid): Likewise.
	* sysdeps/unix/sysv/linux/i386/syscalls.list (setfsgid): Likewise.
	(setfsuid): Likewise.
	* sysdeps/unix/sysv/linux/m68k/syscalls.list (setfsgid): Likewise.
	(setfsuid): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list (setfsgid):
	Likewise.
	(setfsuid): Likewise.
	* sysdeps/unix/sysv/linux/sh/syscalls.list (setfsgid): Likewise.
	(setfsuid): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list (setfsgid):
	Likewise.
	(setfsuid): Likewise.
 2014-10-27 12:24:42 +00:00
Joseph Myers
c8bc40386a Move get*id and getgroups definitions to syscalls.list (bug 14138). 
Continuing the move of syscall definitions to syscalls.list, where the
removal of support for old kernel versions has made this possible,
this patch moves various definitions of get*id functions and
getgroups.  The previous C definitions were because of the transition
to 32-bit uids and gids.

Tested for x86.

	[BZ #14138]
	* sysdeps/unix/sysv/linux/arm/getegid.c: Remove file.
	* sysdeps/unix/sysv/linux/arm/geteuid.c: Likewise.
	* sysdeps/unix/sysv/linux/arm/getgid.c: Likewise.
	* sysdeps/unix/sysv/linux/arm/getgroups.c: Likewise.
	* sysdeps/unix/sysv/linux/arm/getresgid.c: Likewise.
	* sysdeps/unix/sysv/linux/arm/getresuid.c: Likewise.
	* sysdeps/unix/sysv/linux/arm/getuid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/getegid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/geteuid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/getgid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/getgroups.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/getresgid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/getresuid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/getuid.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/getegid.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/geteuid.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/getgid.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/getgroups.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/getresgid.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/getresuid.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/getuid.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/getegid.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/geteuid.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/getgid.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/getgroups.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/getresgid.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/getresuid.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/getuid.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/getegid.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/geteuid.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/getgid.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/getgroups.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/getresgid.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/getresuid.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/getuid.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/getegid.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/geteuid.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/getgid.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/getgroups.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/getuid.c: Likewise.
	* sysdeps/unix/sysv/linux/arm/syscalls.list (getegid): Add
	syscall.
	(geteuid): Likewise.
	(getgid): Likewise.
	(getuid): Likewise.
	(getresgid): Likewise.
	(getresuid): Likewise.
	(getgroups): Likewise.
	* sysdeps/unix/sysv/linux/i386/syscalls.list (getegid): Likewise.
	(geteuid): Likewise.
	(getgid): Likewise.
	(getuid): Likewise.
	(getresgid): Likewise.
	(getresuid): Likewise.
	(getgroups): Likewise.
	* sysdeps/unix/sysv/linux/m68k/syscalls.list (getegid): Likewise.
	(geteuid): Likewise.
	(getgid): Likewise.
	(getuid): Likewise.
	(getresgid): Likewise.
	(getresuid): Likewise.
	(getgroups): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list (getegid):
	Likewise.
	(geteuid): Likewise.
	(getgid): Likewise.
	(getuid): Likewise.
	(getresgid): Likewise.
	(getresuid): Likewise.
	(getgroups): Likewise.
	* sysdeps/unix/sysv/linux/sh/syscalls.list (getegid): Likewise.
	(geteuid): Likewise.
	(getgid): Likewise.
	(getuid): Likewise.
	(getresgid): Likewise.
	(getresuid): Likewise.
	(getgroups): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list (getegid):
	Likewise.
	(geteuid): Likewise.
	(getgid): Likewise.
	(getuid): Likewise.
	(getgroups): Likewise.
 2014-10-24 13:01:17 +00:00
Joseph Myers
f7b425175c Support and use mixed compat/non-compat aliases in syscalls.list. 
This patch enables syscalls.list entries to specify both compat and
non-compat symbol versions for the same syscall definition, making use
of this for setrlimit / chown / lchown where the inability to specify
such aliases showed up in the course of work on bug 14138.

The change to make-syscalls.sh is minimal: adding a SHARED conditional
on the compat_symbol calls.  It remains the case that if a compat
symbol version is specified, the syscall is only built for the shared
library at all if an explicit symbol version is given for a non-compat
symbol (so it's necessary to specify "lchown@@GLIBC_2.0
chown@GLIBC_2.0" rather than just "lchown chown@GLIBC_2.0").  It also
remains the case, as already commented in make-syscalls.sh, that no
SHLIB_COMPAT conditionals are generated, so there would be problems if
the same syscalls.list file, with compat symbols, were used for both
configurations that should have those symbols and configurations for
which they should be conditioned out with SHLIB_COMPAT.

Tested for x86.

	* sysdeps/unix/make-syscalls.sh (emit_weak_aliases): Condition
	compat_symbol calls on [SHARED].
	* sysdeps/unix/sysv/linux/powerpc/lchown.S: Remove file.
	* sysdeps/unix/sysv/linux/i386/syscalls.list (oldsetrlimit):
	Remove.
	(setrlimit): Add setrlimit@GLIBC_2.0 alias.
	* sysdeps/unix/sysv/linux/m68k/m680x0/syscalls.list
	(oldsetrlimit): Remove.
	(setrlimit): Add setrlimit@GLIBC_2.0 alias.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list
	(lchown): New syscall entry.
	(oldsetrlimit): Remove.
	(setrlimit): Add setrlimit@GLIBC_2.0 alias.
	* sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list
	(oldsetrlimit): Remove.
	(setrlimit): Add setrlimit@GLIBC_2.0 alias.
 2014-10-06 22:58:59 +00:00
Joseph Myers
abb280f799 Move some chown / lchown / fchown definitions to syscalls.list (bug 14138). 
Continuing the move of syscall definitions to syscalls.list, where the
removal of support for old kernel versions has made this possible,
this patch moves various definitions of chown, lchown and fchown.

In most cases the need for special syscalls.list entries (rather than
existing generic ones) is because these architectures use chown32,
lchown32 and fchown32 as syscall names.  Some architectures also have
symbol versioning compatibility for older versions of chown having
been equivalent to lchown.

In the case of powerpc, chown.c (providing the chown@@GLIBC_2.1
default version) is replaced by a syscalls.list entry (for powerpc32;
powerpc64 has no need for this because of its more recent minimum
symbol version, so can just use the entry in
sysdeps/unix/syscalls.list), but lchown.S is left as-is because it
provides the compat version of chown as an actual alias for __lchown,
which is not yet supported by syscalls.list.  This file can be removed
once such aliases are supported in syscalls.list.

	[BZ #14138]
	* sysdeps/unix/sysv/linux/arm/fchown.c: Remove file.
	* sysdeps/unix/sysv/linux/arm/lchown.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/fchown.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/lchown.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/chown.c: Likewise.
	* sysdeps/unix/sysv/linux/arm/syscalls.list (lchown): Add syscall.
	(fchown): Likewise.
	* sysdeps/unix/sysv/linux/m68k/syscalls.list (lchown): Likewise.
	(fchown): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list (chown):
	Likewise.
 2014-10-06 22:30:54 +00:00
Joseph Myers
68870f1253 Move some setrlimit definitions to syscalls.list (bug 14138). 
Bug 14138 is followup cleanup after removal of support for old Linux
kernel versions: moving syscalls to syscalls.list where the only
reason for using C definitions was kernel version conditionals that
are no longer present.

This patch deals with the case of setrlimit
(sysdeps/unix/sysv/linux/i386/setrlimit.c, included by various other
architectures).  Where needed (where there is also a compat symbol for
setrlimit@GLIBC_2.0), new syscalls.list entries are added.  Where not
needed (where there is no such compat symbol and the minimum symbol
version for libc is 2.2 or later), no such entries are added as that
in sysdeps/unix/syscalls.list will suffice.  Thus arm and sh need no
such entries, while m68k and powerpc need entries only in a
subdirectory syscalls.list file rather than for all configurations
that previously used setrlimit.c.

(setrlimit@@GLIBC_2.2 and setrlimit@GLIBC_2.0 are now semantically
identical - the new symbol version was about a change of types from
signed to unsigned and the former compatibility code for dealing with
large unsigned arguments on old kernels is no longer needed or
present, having been removed with support for pre-2.4 kernels.
However, making the two versions into aliases doesn't work at present:
the case of having both default and non-default symbol versions on the
same syscalls.list line results in a compat_symbol call in code built
for static libc, which doesn't compile.  I don't suppose it would be
hard to generate SHARED conditionals from make-syscalls.sh to fix
this, but in any case this patch doesn't make things any worse, as the
functions weren't aliases before the patch either.)

Tested for x86, and ran ABI tests for ARM as an example of an
architecture where the setrlimit.c file was just removed without
adding syscalls.list entries.

	[BZ #14138]
	* sysdeps/unix/sysv/linux/arm/setrlimit.c: Remove file.
	* sysdeps/unix/sysv/linux/i386/setrlimit.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/setrlimit.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/setrlimit.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/setrlimit.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/setrlimit.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/syscalls.list (setrlimit): Add
	syscall entry for GLIBC_2.2 symbol version.
	* sysdeps/unix/sysv/linux/m68k/m680x0/syscalls.list (setrlimit):
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list
	(setrlimit): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list (setrlimit):
	Likewise.
 2014-09-23 14:12:50 +00:00
Joseph Myers
ba90e05052 Remove configuration name patterns from shlib-versions. 
This patch removes the first column (patterns matching configuration
names) from shlib-versions, leaving shlib-versions entry selection
based purely on sysdeps directories.

An implication of this removal is that the default for any non-Linux
ports using NPTL will be the same SONAMEs for NPTL libraries as for
Linux (as those defaults, previously limited to .*-.*-linux.*, are
left in nptl/shlib-versions and nptl_db/shlib-versions).

Special host_os handling in configure.ac that was purely for
shlib-versions is removed.  (The host_os setting is still used for
libc-abis - see
<https://sourceware.org/ml/libc-alpha/2014-01/msg00375.html> regarding
that - but no entries there are affected by this change.)

Tested on x86_64 and x86 that the installed shared libraries are
unchanged by this patch.

	* scripts/soversions.awk: Do not handle configuration names.
	* Makeconfig ($(common-objpfx)soversions.i): Do not pass cpu,
	vendor and os variables to soversions.awk.
	* configure.ac: Do not modify gnu-* host_os.
	* configure: Regenerated
	* shlib-versions: Remove first column with configuration names.
	* nptl/shlib-versions: Likewise.
	* nptl_db/shlib-versions: Likewise.
	* sysdeps/hppa/shlib-versions: Likewise.
	* sysdeps/m68k/shlib-versions: Likewise.
	* sysdeps/mach/hurd/shlib-versions: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/shlib-versions: Likewise.
	* sysdeps/unix/sysv/linux/alpha/shlib-versions: Likewise.
	* sysdeps/unix/sysv/linux/arm/shlib-versions: Likewise.
	* sysdeps/unix/sysv/linux/hppa/shlib-versions: Likewise.
	* sysdeps/unix/sysv/linux/ia64/shlib-versions: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/shlib-versions: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/shlib-versions: Likewise.
	* sysdeps/unix/sysv/linux/mips/shlib-versions: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/shlib-versions:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/shlib-versions: Likewise.
	* sysdeps/unix/sysv/linux/sh/shlib-versions: Likewise.
	* sysdeps/unix/sysv/linux/shlib-versions: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/shlib-versions: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/shlib-versions: Likewise.
	* sysdeps/unix/sysv/linux/tile/shlib-versions: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/shlib-versions: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/shlib-versions: Likewise.

libidn/ChangeLog:
	* shlib-versions: Remove first column with configuration names.
 2014-09-12 12:28:47 +00:00
Andreas Schwab
23329dcaf9 m68k: use generic lowlevellock.h 2014-07-18 23:35:11 +02:00
Joseph Myers
29c4f53e2a Move architecture shlib-versions files to Linux-specific directories. 
Various architectures have files such as sysdeps/<arch>/shlib-versions
whose contents are in fact entirely Linux-specific, relating only to
the symbol / shared library versions for the port to Linux on that
architecture, when any future port to a different OS on that
architecture would use the symbol version of the glibc release it goes
in, as standard for new ports.

This patch moves such files under sysdeps/unix/sysv/linux/, merging in
the contents of sysdeps/<arch>/nptl/shlib-versions in the process.
The only bits not moved are those relating to libgcc_s versions, which
don't appear OS-specific in the same way that glibc's symbol versions
so.  It deliberately does not change the regular expressions given for
matching configurations in each file; some match only Linux although
not Linux-specific, or match other OSes although Linux-specific.  It
is with a view to at least the following further cleanups:

* Move architecture-specific content from the toplevel shlib-versions
  and nptl/shlib-versions into sysdeps shlib-versions files, so
  eliminating another difference between ex-ports and non-ex-ports
  architectures.

* Likewise, for OS-specific content in shlib-versions files.

* At that point, the first field in shlib-versions files (the regular
  expression matching a configuration triplet) should be redundant, so
  eliminate that field and leave shlib-versions selection working
  purely on a sysdeps basis (with limited use of %ifdef in
  shlib-versions files when needed) rather than having its own
  separate mechanism to select what configuration information is
  relevant.

* Move the build of gnu/lib-names.h to a similar mechanism to that
  used for gnu/stubs.h (each library build installing a version of the
  header specifically for that build), so we can eliminate the
  duplication of soname information in the makefiles and get it purely
  from shlib-versions files again.

There may be other cleanups possible as well (in particular, I'm not
sure that all cases where the same "Earliest symbol set" information
is repeated for many different libraries actually should need to
repeat it rather than specifying it just once for DEFAULT for the
given configuration, and separately specifying any non-default choices
of soname).

Tested x86_64 that the installed shared libraries are unchanged by
this patch.

	* sysdeps/aarch64/shlib-versions: Move to ...
	* sysdeps/unix/sysv/linux/aarch64/shlib-versions: ... here.
	* sysdeps/alpha/shlib-versions: Move to ...
	* sysdeps/unix/sysv/linux/alpha/shlib-versions: ... here.
	* sysdeps/arm/shlib-versions: Move to ...
	* sysdeps/unix/sysv/linux/arm/shlib-versions: ... here.
	* sysdeps/hppa/shlib-versions: Move all contents except for
	libgcc_s entry to ...
	* sysdeps/unix/sysv/linux/hppa/shlib-versions: ... here.  Merge in
	entry from ...
	* sysdeps/hppa/nptl/shlib-versions: ... here.  Remove file.
	* sysdeps/ia64/shlib-versions: Move to ...
	* sysdeps/unix/sysv/linux/ia64/shlib-versions: ... here.  Merge in
	entry from ...
	* sysdeps/ia64/nptl/shlib-versions: ... here.  Remove file.
	* sysdeps/m68k/coldfire/shlib-versions: Move to ...
	* sysdeps/unix/sysv/linux/m68k/coldfire/shlib-versions: ... here.
	* sysdeps/microblaze/shlib-versions: Move to ...
	* sysdeps/unix/sysv/linux/microblaze/shlib-versions: ... here.
	* sysdeps/mips/shlib-versions: Move to ...
	* sysdeps/unix/sysv/linux/mips/shlib-versions: ... here.  Merge in
	entry from ...
	* sysdeps/mips/nptl/shlib-versions: ... here.  Remove file.
	* sysdeps/tile/shlib-versions: Move to ...
	* sysdeps/unix/sysv/linux/tile/shlib-versions: ... here.
	* sysdeps/unix/sysv/linux/x86_64/64/shlib-versions: Merge in entry
	from ...
	* sysdeps/x86_64/64/shlib-versions: ... here.  Remove file.
	* sysdeps/unix/sysv/linux/x86_64/x32/shlib-versions: Merge in
	entry from ...
	* sysdeps/x86_64/x32/shlib-versions: ... here.  Remove file.
 2014-07-17 14:31:12 +00:00
Roland McGrath
c0c6bac945 Get rid of lll_robust_dead. 2014-07-10 11:21:54 -07:00
Roland McGrath
887865fcfa Get rid of lll_robust_trylock. 2014-07-10 10:57:57 -07:00
Roland McGrath
f083450f45 NPTL is no longer an add-on! 2014-07-07 09:29:06 -07:00
Joseph Myers
11b076bbae Remove stray includes of kernel-features.h. 
Now that files using __ASSUME_* macros have been made by
<https://sourceware.org/ml/libc-alpha/2014-06/msg00543.html> to
include <kernel-features.h> directly, any include from a file not
using __ASSUME_* macros can safely be removed (as there will no longer
be some other file relying on indirect inclusion via a header from
which the include is being removed).

This patch removes such unnecessary kernel-features.h includes.

Tested x86_64 that disassembly of installed shared libraries is
unchanged by this patch, except for line numbers in calls to
__assert_fail from libc.so and ld.so.

2014-06-23  Joseph Myers  <joseph@codesourcery.com>

	* nptl/createthread.c: Don't include kernel-features.h.
	* nptl/pthread_cancel.c: Likewise.
	* nptl/pthread_condattr_setclock.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/pt-raise.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/pthread_getcpuclockid.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/pthread_kill.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/pthread_sigqueue.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/raise.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/s390/s390-32/pt-vfork.S: Likewise.
	* nptl/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S: Likewise.
	* nptl/sysdeps/unix/sysv/linux/s390/s390-64/pt-vfork.S: Likewise.
	* nptl/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S: Likewise.
	* nptl/sysdeps/unix/sysv/linux/timer_create.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/timer_delete.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/timer_getoverr.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/timer_gettime.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/timer_routines.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/timer_settime.c: Likewise.
	* nscd/gai.c: Likewise.
	* nss/nss_db/db-open.c: Likewise.
	* sysdeps/generic/ldsodefs.h: Likewise.
	* sysdeps/sh/nptl/tls.h: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/sigcontextinfo.h: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/adjtime.c: Likewise.
	* sysdeps/unix/sysv/linux/alpha/xstatconv.h: Likewise.
	* sysdeps/unix/sysv/linux/arm/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/arm/sigcontextinfo.h: Likewise.
	* sysdeps/unix/sysv/linux/check_pf.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_getcpuclockid.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_getres.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_gettime.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_nanosleep.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_settime.c: Likewise.
	* sysdeps/unix/sysv/linux/dl-execstack.c: Likewise.
	* sysdeps/unix/sysv/linux/dl-osinfo.h: Likewise.
	* sysdeps/unix/sysv/linux/dl-sysdep.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/futimesat.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/poll.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/fcntl.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/fxstatat.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/preadv.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/preadv64.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/pwritev.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/pwritev64.c: Likewise.
	* sysdeps/unix/sysv/linux/getcwd.c: Likewise.
	* sysdeps/unix/sysv/linux/getpagesize.c: Likewise.
	* sysdeps/unix/sysv/linux/getsysstats.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/fxstat.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/lxstat.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/mmap.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/mmap64.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/xstat.c: Likewise.
	* sysdeps/unix/sysv/linux/ia64/system.c: Likewise.
	* sysdeps/unix/sysv/linux/if_index.c: Likewise.
	* sysdeps/unix/sysv/linux/ifaddrs.c: Likewise.
	* sysdeps/unix/sysv/linux/ifreq.c: Likewise.
	* sysdeps/unix/sysv/linux/ldsodefs.h: Likewise.
	* sysdeps/unix/sysv/linux/lutimes.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/nptl/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/accept4.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/recvmmsg.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/sendmmsg.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/mmap64.c: Likewise.
	* sysdeps/unix/sysv/linux/netlinkaccess.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/chown.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_mask.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_nomask.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/fpu/fe_mask.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/fpu/fe_nomask.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/makecontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/prof-freq.c: Likewise.
	* sysdeps/unix/sysv/linux/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/mmap.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/system.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/sigpending.c: Likewise.
	* sysdeps/unix/sysv/linux/sigprocmask.c: Likewise.
	* sysdeps/unix/sysv/linux/sigsuspend.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/xstatconv.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/system.c: Likewise.
	* sysdeps/unix/sysv/linux/syslog.c: Likewise.
	* sysdeps/unix/sysv/linux/system.c: Likewise.
	* sysdeps/unix/sysv/linux/testrtsig.h: Likewise.
	* sysdeps/unix/sysv/linux/timespec_get.c: Likewise.
	* sysdeps/unix/sysv/linux/ttyname.c: Likewise.
	* sysdeps/unix/sysv/linux/ttyname_r.c: Likewise.
	* sysdeps/unix/sysv/linux/utimensat.c: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/xstatconv.h: Likewise.
 2014-06-25 18:09:01 +00:00
Roland McGrath
15bed4728f m68k: Consolidate nptl/ subdirectories under linux/... 2014-06-23 09:24:18 -07:00
Joseph Myers
809fdf0d23 Remove __ASSUME_ATFCTS conditionals in sysdeps/unix/sysv/linux/. 
This patch cleans up for __ASSUME_ATFCTS now always being true for the
supported Linux kernel versions by removing conditional code in
sysdeps/unix/sysv/linux.  Several fchownat.c files that were only
present because of differences in the fallback syscalls used
(depending on the architecture-specific names of chown-related
syscalls for 32-bit uids) are removed.  Files that looks like they
could be replaced by syscalls.list entries have the standard "Consider
moving to syscalls.list." comment (see bug 14138) added.  Conditionals
on the relevant __NR_* syscall numbers being defined are also removed,
since my analysis indicated that the relevant syscalls are always
defined for all relevant kernel versions using any affected file.
Much of the removed fallback code had unbounded stack allocations, so
this reduces the number of cases to consider for anyone reviewing uses
of alloca and VLAs in glibc.

There remain tests of __ASSUME_ATFCTS in io/openat.c (to determine
whether to define __have_atfcts) and sysdeps/posix/getcwd.c (which
also uses __have_atfcts); thus, the definition of __ASSUME_ATFCTS
remains in kernel-features.h.  The logical condition relevant there is
whether openat64_not_cancel_3 is known to work.  Hurd doesn't use this
version of getcwd at all, so the conditionals in getcwd.c are always
true in glibc.  However, this code is also used in gnulib.  So the
best way to deal with the conditionals there may be for gnulib people
to deal with merging all relevant changes in both directions between
the glibc and gnulib versions of this file, at the end of which the
openat conditionals should be in whatever form is best for gnulib, and
hardcoded in the _LIBC case to having openat supported.

Tested by comparing before-and-after disassembly of installed
(stripped) shared libraries, on x86_64 and x86.  On x86 the patch made
no change to the disassembly; on x86_64, the only changes were in
readlinkat, where formerly the return value from the readlinkat
syscall was stored in an int variable before being converted to
ssize_t for the return, and now the return value is returned directly
without truncation to int.  I think it's clearly correct not to
truncate the return value (although I also think the truncation would
not have been a user-visible bug because the kernel would never have
returned a value it could have affected).

	* include/fcntl.h (__atfct_seterrno): Remove prototype.
	(__atfct_seterrno_2): Likewise.
	* sysdeps/unix/sysv/linux/alpha/dl-fxstatat64.c: Do not include
	<kernel-features.h>.
	(__ASSUME_ATFCTS): Do not undefine and redefine.
	* sysdeps/unix/sysv/linux/alpha/fxstatat.c [__ASSUME_ATFCTS]
	(__have_atfcts): Remove conditional definition.
	(__fxstatat([__NR_fstatat64]: Make code unconditional.
	(__fxstatat) [!__ASSUME_ATFCTS]: Remove conditional code and code
	unreachable if [__ASSUME_ATFCTS].
	* sysdeps/unix/sysv/linux/dl-fxstatat64.c (__ASSUME_ATFCTS): Do
	not undefine and redefine.
	* sysdeps/unix/sysv/linux/faccessat.c: Do not include
	<kernel-features.h>.
	(faccessat) [__NR_faccessat]: Make code unconditional.
	(faccessat) [!__ASSUME_ATFCTS]: Remove conditional code.
	* sysdeps/unix/sysv/linux/fchmodat.c: Do not include
	<kernel-features.h>.
	(fchmodat) [__NR_fchmodat]: Make code unconditional.
	(fchmodat) [!__ASSUME_ATFCTS]: Remove conditional code.
	* sysdeps/unix/sysv/linux/fchownat.c: Do not include
	<kernel-features.h>.
	(fchownat) [__NR_fchownat]: Make code unconditional.
	(fchownat) [!__ASSUME_ATFCTS]: Remove conditional code.
	* sysdeps/unix/sysv/linux/futimesat.c: Do not include
	<kernel-features.h>.
	(futimesat) [__NR_futimesat]: Make code unconditional.
	(futimesat) [!__ASSUME_ATFCTS]: Remove conditional code.
	* sysdeps/unix/sysv/linux/fxstatat.c: Do not include
	<kernel-features.h>.
	(__fxstatat) [__NR_newfstatat]: Make code unconditional.
	(__fxstatat) [!__ASSUME_ATFCTS]: Remove conditional code.
	* sysdeps/unix/sysv/linux/fxstatat64.c: Do not include
	<kernel-features.h>.
	(__fxstatat64) [__NR_fstatat64]: Make code unconditional.
	(__fxstatat64) [!__ASSUME_ATFCTS]: Remove conditional code.
	* sysdeps/unix/sysv/linux/i386/fchownat.c: Remove file.
	* sysdeps/unix/sysv/linux/i386/fxstatat.c: Do not include
	<kernel-features.h>.
	(__fxstatat) [__NR_fstatat64]: Make code unconditional.
	(__fxstatat) [!__ASSUME_ATFCTS]: Remove conditional code.
	* sysdeps/unix/sysv/linux/linkat.c: Do not include
	<kernel-features.h>.
	(linkat) [__NR_linkat]: Make code unconditional.
	(linkat) [!__ASSUME_ATFCTS]: Remove conditional code.
	* sysdeps/unix/sysv/linux/m68k/fchownat.c: Remove file.
	* sysdeps/unix/sysv/linux/mips/mips64/fxstatat64.c: Do not include
	<kernel-features.h>.
	(__fxstatat64) [__NR_newfstatat]: Make code unconditional.
	(__fxstatat64) [!__ASSUME_ATFCTS]: Remove conditional code.
	* sysdeps/unix/sysv/linux/mkdirat.c: Do not include
	<kernel-features.h>.
	(mkdirat) [__NR_mkdirat]: Make code unconditional.
	(mkdirat) [!__ASSUME_ATFCTS]: Remove conditional code.
	* sysdeps/unix/sysv/linux/openat.c: Do not include
	<kernel-features.h>.
	[!__ASSUME_ATFCTS] (__atfct_seterrno): Remove function.
	[!__ASSUME_ATFCTS] (__have_atfcts): Remove variable.
	(OPENAT_NOT_CANCEL) [__NR_openat]: Make code unconditional.
	(OPENAT_NOT_CANCEL) [!__ASSUME_ATFCTS]: Remove conditional code.
	* sysdeps/unix/sysv/linux/powerpc/fchownat.c: Remove file.
	* sysdeps/unix/sysv/linux/readlinkat.c: Do not include
	<kernel-features.h>.
	(readlinkat) [__NR_readlinkat]: Make code unconditional.
	(readlinkat) [!__ASSUME_ATFCTS]: Remove conditional code.  Return
	result of INLINE_SYSCALL directly, not via int variable.
	* sysdeps/unix/sysv/linux/renameat.c: Do not include
	<kernel-features.h>.
	[!__ASSUME_ATFCTS] (__atfct_seterrno_2): Remove function.
	(renameat) [__NR_renameat]: Make code unconditional.
	(renameat) [!__ASSUME_ATFCTS]: Remove conditional code.
	* sysdeps/unix/sysv/linux/s390/s390-32/fchownat.c: Remove file.
	* sysdeps/unix/sysv/linux/sh/fchownat.c: Remove file.
	* sysdeps/unix/sysv/linux/sparc/sparc32/fchownat.c: Remove file.
	* sysdeps/unix/sysv/linux/sparc/sparc64/dl-fxstatat64.c
	(__ASSUME_ATFCTS): Do not undefine and redefine.
	* sysdeps/unix/sysv/linux/symlinkat.c: Do not include
	<kernel-features.h>.
	(symlinkat) [__NR_symlinkat]: Make code unconditional.
	(symlinkat) [!__ASSUME_ATFCTS]: Remove conditional code.
	* sysdeps/unix/sysv/linux/unlinkat.c: Do not include
	<kernel-features.h>.
	(unlinkat) [__NR_unlinkat]: Make code unconditional.
	(unlinkat) [!__ASSUME_ATFCTS]: Remove conditional code.
	* sysdeps/unix/sysv/linux/wordsize-64/dl-fxstatat64.c
	(__ASSUME_ATFCTS): Do not undefine and redefine.
	* sysdeps/unix/sysv/linux/wordsize-64/fxstatat.c: Do not include
	<kernel-features.h>.
	(__fxstatat) [__NR_newfstatat]: Make code unconditional.
	(__fxstatat) [!__ASSUME_ATFCTS]: Remove conditional code.
	* sysdeps/unix/sysv/linux/xmknodat.c: Do not include
	<kernel-features.h>.
	(__xmknodat) [__NR_mknodat]: Make code unconditional.
	(__xmknodat) [!__ASSUME_ATFCTS]: Remove conditional code.
 2014-06-20 15:41:35 +00:00
Andreas Schwab
1d2a049204 m68k: Consolidate NPTL/non versions of clone 2014-06-14 21:37:49 +02:00
Andreas Schwab
11b9e55b67 m68k: Consolidate NPTL/non versions of vfork 2014-06-14 21:37:34 +02:00
Andi Kleen
8491ed6d70 Add adaptive elision to rwlocks 
This patch relies on the C version of the rwlocks posted earlier.
With C rwlocks it is very straight forward to do adaptive elision
using TSX. It is based on the infrastructure added earlier
for mutexes, but uses its own elision macros. The macros
are fairly general purpose and could be used for other
elision purposes too.

This version is much cleaner than the earlier assembler based
version, and in particular implements adaptation which makes
it safer.

I changed the behavior slightly to not require any changes
in the test suite and fully conform to all expected
behaviors (generally at the cost of not eliding in
various situations). In particular this means the timedlock
variants are not elided.  Nested trylock aborts.
 2014-06-13 13:15:28 -07:00
Roland McGrath
d752f0ccd7 m68k: Define TLS_DEFINE_INIT_TP 2014-06-09 15:54:19 -07:00
Roland McGrath
5190c17f22 m68k: Convert fork.c to arch-fork.h 2014-05-30 18:44:55 +02:00
Roland McGrath
2fbdf5339a Consolidate not-cancel.h files. 2014-05-14 11:06:36 -07:00
Joseph Myers
5e7698c6f1 Reduce kernel-features.h duplication. 
This patch reduces duplication between different architectures'
kernel-features.h files by making the architecture-independent file
define various macros unconditionally (instead of only for a
particular list of architectures), with the architecture-specific
files then undefining the macros if necessary.

Specifically, __ASSUME_O_CLOEXEC (O_CLOEXEC flag to open) and
__ASSUME_SOCK_CLOEXEC (SOCK_NONBLOCK and SOCK_CLOEXEC flags to socket)
are supported on all architectures as of 2.6.32 or the minimum kernel
version for the architecture if later.  For __ASSUME_IN_NONBLOCK,
__ASSUME_PIPE2, __ASSUME_EVENTFD2, __ASSUME_SIGNALFD4 and
__ASSUME_DUP3, the relevant syscalls were added for alpha in 2.6.33
but otherwise the features are available as of 2.6.32.  For
__ASSUME_UTIMES, support is everywhere in 2.6.32 except for
asm-generic architectures and hppa.

Although those were the main cases of duplication among
kernel-features.h files, some other cases of unnecessary definitions
were also cleaned up: the hppa file defined various macros that were
either no longer used at all, or defined by the main file by default
anyway, the ia64 file had duplicative definitions of __ASSUME_PSELECT
and __ASSUME_PPOLL, while mips had such a definition of
__ASSUME_IPC64.

Really, rather than being defined in the main file then undefined for
asm-generic architectures, __ASSUME_UTIMES should become an
hppa-specific macro.  Given that __ASSUME_ATFCTS and
__ASSUME_UTIMENSAT are now always true, the only live __ASSUME_UTIMES
conditional is in sysdeps/unix/sysv/linux/utimes.c, which is not used
for asm-generic architectures.  I think the desired state would be an
hppa-specific file (that includes sysdeps/unix/sysv/linux/utimes.c if
__ASSUME_UTIMES, and otherwise has fallback code), with the fallback
code being removed from the main utimes.c.  But I think that's most
reasonably a separate cleanup once __ASSUME_ATFCTS and
__ASSUME_UTIMESAT have both had conditional code cleaned up.

Given this patch, I think it's straightforward to move non-ex-ports
architectures to having their own kernel-features.h files, like
ex-ports architectures, rather than conditionals in the main file
(i.e., such a move won't require the architecture-specific file to
contain anything that isn't genuinely architecture-specific), and
would encourage architecture maintainers to do so.

Tested x86_64 that the installed shared libraries are unchanged by
this patch.  Note that on some architectures this *will* cause
__ASSUME_* macros to be defined in cases where they weren't previously
but should have been (but this is just optimization, not a fix to a
user-visible bug, so doesn't need a bug report in Bugzilla).

	* sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_UTIMES):
	Define unconditionally.
	(__ASSUME_O_CLOEXEC): Likewise.
	(__ASSUME_SOCK_CLOEXEC): Likewise.
	(__ASSUME_IN_NONBLOCK): Likewise.
	(__ASSUME_PIPE2): Likewise.
	(__ASSUME_EVENTFD2): Likewise.
	(__ASSUME_SIGNALFD4): Likewise.
	(__ASSUME_DUP3): Likewise.
	* sysdeps/unix/sysv/linux/aarch64/kernel-features.h
	(__ASSUME_DUP3): Do not define.
	(__ASSUME_EVENTFD2): Likewise.
	(__ASSUME_IN_NONBLOCK): Likewise.
	(__ASSUME_O_CLOEXEC): Likewise.
	(__ASSUME_PIPE2): Likewise.
	(__ASSUME_SIGNALFD4): Likewise.
	(__ASSUME_SOCK_CLOEXEC): Likewise.
	(__ASSUME_UTIMES): Undefine.
	* sysdeps/unix/sysv/linux/alpha/kernel-features.h
	(__ASSUME_UTIMES): Do not define.
	(__ASSUME_O_CLOEXEC): Likewise.
	(__ASSUME_SOCK_CLOEXEC): Likewise.
	(__ASSUME_IN_NONBLOCK): Undefine if [__LINUX_KERNEL_VERSION <
	0x020621] instead of defining if [__LINUX_KERNEL_VERSION >=
	0x020621].
	(__ASSUME_PIPE2): Likewise.
	(__ASSUME_EVENTFD2): Likewise.
	(__ASSUME_SIGNALFD4): Likewise.
	[__LINUX_KERNEL_VERSION < 0x020621] (__ASSUME_DUP3): Undefine.
	* sysdeps/unix/sysv/linux/arm/kernel-features.h (__ASSUME_UTIMES):
	Do not define.
	(__ASSUME_EVENTFD2): Likewise.
	(__ASSUME_SIGNALFD4): Likewise.
	* sysdeps/unix/sysv/linux/hppa/kernel-features.h
	(__ASSUME_32BITUIDS): Likewise.
	(__ASSUME_TRUNCATE64_SYSCALL): Likewise.
	(__ASSUME_IPC64): Likewise.
	(__ASSUME_ST_INO_64_BIT): Likewise.
	(__ASSUME_GETDENTS64_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION < 0x030e00] (__ASSUME_UTIMES): Undefine.
	* sysdeps/unix/sysv/linux/ia64/kernel-features.h
	(__ASSUME_UTIMES): Do not define.
	(__ASSUME_PSELECT): Likewise.
	(__ASSUME_PPOLL): Likewise.
	(__ASSUME_O_CLOEXEC): Likewise.
	(__ASSUME_SOCK_CLOEXEC): Likewise.
	(__ASSUME_IN_NONBLOCK): Likewise.
	(__ASSUME_PIPE2): Likewise.
	(__ASSUME_EVENTFD2): Likewise.
	(__ASSUME_SIGNALFD4): Likewise.
	(__ASSUME_DUP3): Likewise.
	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
	(__ASSUME_UTIMES): Likewise.
	(__ASSUME_O_CLOEXEC): Likewise.
	(__ASSUME_SOCK_CLOEXEC): Likewise.
	(__ASSUME_IN_NONBLOCK): Likewise.
	(__ASSUME_PIPE2): Likewise.
	(__ASSUME_EVENTFD2): Likewise.
	(__ASSUME_SIGNALFD4): Likewise.
	(__ASSUME_DUP3): Likewise.
	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	(__ASSUME_UTIMES): Likewise.
	(__ASSUME_O_CLOEXEC): Likewise.
	(__ASSUME_SOCK_CLOEXEC): Likewise.
	(__ASSUME_IN_NONBLOCK): Likewise.
	(__ASSUME_PIPE2): Likewise.
	(__ASSUME_EVENTFD2): Likewise.
	(__ASSUME_SIGNALFD4): Likewise.
	(__ASSUME_DUP3): Likewise.
	* sysdeps/unix/sysv/linux/mips/kernel-features.h (__ASSUME_IPC64):
	Likewise.
	(__ASSUME_UTIMES): Likewise.
	(__ASSUME_EVENTFD2): Likewise.
	(__ASSUME_SIGNALFD4): Likewise.
	* sysdeps/unix/sysv/linux/tile/kernel-features.h
	(__ASSUME_O_CLOEXEC): Likewise.
	(__ASSUME_SOCK_CLOEXEC): Likewise.
	(__ASSUME_IN_NONBLOCK): Likewise.
	(__ASSUME_PIPE2): Likewise.
	(__ASSUME_EVENTFD2): Likewise.
	(__ASSUME_SIGNALFD4): Likewise.
	(__ASSUME_DUP3): Likewise.
	(__ASSUME_UTIMES): Undefine.
 2014-05-14 00:45:19 +00:00
Joseph Myers
637461d965 Clean up kernel version conditionals for pre-2.6.32 kernels. 
This patch does some initial cleanup, following the move to 2.6.32
minimum kernel version, by removing __LINUX_KERNEL_VERSION
conditionals that are now always-true or always-false.  In the case of
__ASSUME_ARG_MAX_STACK_BASED, where the conditional used a kernel
version that was itself in a macro, the associated sysconf.c code is
also cleaned up and __ASSUME_ARG_MAX_STACK_BASED removed completely.

Tested x86_64 that disassembly of installed shared libraries is
unchanged by the patch.

	* sysdeps/unix/sysv/linux/kernel-features.h [__s390__]
	(__ASSUME_UTIMES): Do not condition on kernel version.
	(__ASSUME_PSELECT): Define unconditionally.
	(__ASSUME_PPOLL): Likewise.
	(__ASSUME_ATFCTS): Likewise.
	(__ASSUME_SET_ROBUST_LIST): Do not condition on kernel version.
	(__ASSUME_COMPLETE_READV_WRITEV): Define unconditionally.
	(__ASSUME_FUTEX_LOCK_PI): Do not condition on kernel version.
	(__ASSUME_UTIMENSAT): Define unconditionally.
	(__ASSUME_PRIVATE_FUTEX): Likewise.
	(__ASSUME_FALLOCATE): Likewise.
	(__ASSUME_O_CLOEXEC): Likewise.
	(__LINUX_ARG_MAX_STACK_BASED_MIN_KERNEL): Remove.
	(__ASSUME_ARG_MAX_STACK_BASED): Likewise.
	(__ASSUME_ADJ_OFFSET_SS_READ): Define unconditionally.
	(__ASSUME_SOCK_CLOEXEC): Do not condition on kernel version.
	(__ASSUME_IN_NONBLOCK): Likewise.
	(__ASSUME_PIPE2): Likewise.
	(__ASSUME_EVENTFD2): Likewise.
	(__ASSUME_SIGNALFD4): Likewise.
	(__ASSUME_DUP3): Likewise.
	[__x86_64__ || __sparc__] (__ASSUME_ACCEPT4_SYSCALL): Likewise.
	(__ASSUME_FUTEX_CLOCK_REALTIME): Define unconditionally.
	(__ASSUME_AT_RANDOM): Likewise.
	(__ASSUME_PREADV): Likewise.
	(__ASSUME_PWRITEV): Likewise.
	(__ASSUME_REQUEUE_PI): Do not condition on kernel version.
	(__ASSUME_F_GETOWN_EX): Define unconditionally.
	(__ASSUME_XFS_RESTRICTED_CHOWN): Likewise.
	* sysdeps/unix/sysv/linux/sysconf.c (__sysconf)
	[!__ASSUME_ARG_MAX_STACK_BASED]: Remove conditional code.
	* sysdeps/unix/sysv/linux/alpha/kernel-features.h
	(__ASSUME_O_CLOEXEC): Define unconditionally.
	(__ASSUME_PSELECT): Do not undefine conditionally.
	(__ASSUME_PPOLL): Likewise.
	(__ASSUME_ATFCTS): Likewise.
	(__ASSUME_SET_ROBUST_LIST): Likewise.
	(__ASSUME_UTIMENSAT): Likewise.
	(__ASSUME_FDATASYNC): Define unconditionally.
	* sysdeps/unix/sysv/linux/arm/kernel-features.h
	(__ASSUME_SIGFRAME_V2): Likewise.
	)__ASSUME_EVENTFD2): Likewise.
	(__ASSUME_SIGNALFD4): Likewise.
	(__ASSUME_PSELECT): Do not undefine conditionally.
	(__ASSUME_PPOLL): Likewise.
	* sysdeps/unix/sysv/linux/ia64/kernel-features.h
	(__ASSUME_PSELECT): Define unconditionally.
	(__ASSUME_PPOLL): Likewise.
	(__ASSUME_O_CLOEXEC): Likewise.
	(__ASSUME_SOCK_CLOEXEC): Likewise.
	(__ASSUME_IN_NONBLOCK): Likewise.
	(__ASSUME_PIPE2): Likewise.
	(__ASSUME_EVENTFD2): Likewise.
	(__ASSUME_SIGNALFD4): Likewise.
	(__ASSUME_DUP3): Likewise.
	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
	(__ASSUME_O_CLOEXEC): Likewise.
	(__ASSUME_SOCK_CLOEXEC): Likewise.
	(__ASSUME_IN_NONBLOCK): Likewise.
	(__ASSUME_PIPE2): Likewise.
	(__ASSUME_EVENTFD2): Likewise.
	(__ASSUME_SIGNALFD4): Likewise.
	(__ASSUME_DUP3): Likewise.
	* sysdeps/unix/sysv/linux/mips/kernel-features.h
	(__ASSUME_EVENTFD2): Likewise.
	(__ASSUME_SIGNALFD4): Likewise.
	(__ASSUME_ACCEPT4_SYSCALL): Likewise.
 2014-05-12 22:48:25 +00:00
Torvald Riegel
36875b06e0 Fixed and unified pthread_once. 
[BZ #15215] This unifies various pthread_once architecture-specific
implementations which were using the same algorithm with slightly different
implementations.  It also adds missing memory barriers that are required for
correctness.
 2014-04-11 15:54:19 +02:00
Adhemerval Zanella
01f8eac224 Move __PTHREAD_SPINS definition to architecture specific header 
This patch moves the __PTHREAD_SPINS definition to arch specific header
since pthread_mutex_t layout is also arch specific.  This leads to no
need to defining __PTHREAD_MUTEX_HAVE_ELISION and thus removing of the
undefined compiler warning.
 2014-04-09 06:41:44 -05:00
Joseph Myers
47c5adebd2 Correct robust mutex / PI futex kernel assumptions (bug 9894). 
This patch continues fixing __ASSUME_* issues in preparation for
moving to a 2.6.32 minimum kernel version by addressing assumptions on
robust mutex and PI futex support availability.  Those assumptions are
bug 9894, but to be clear this patch does not address all the issues
from that bug about wrong version assumptions, only those still
applicable for --enable-kernel=2.6.32 or later (with the expectation
that the move to that minimum kernel will obsolete the other parts of
the bug).  The patch is independent of
<https://sourceware.org/ml/libc-alpha/2014-03/msg00585.html>, my other
pending-review patch preparing for the kernel version change; the two
together complete all the changes I believe are needed in preparation
regarding any macro in sysdeps/unix/sysv/linux/kernel-features.h that
would be affected by such a change.  (I have not checked the
correctness of macros whose conditions are unaffected by such a
change, or macros only defined in other kernel-features.h files.)

As discussed in that bug, robust mutexes and PI futexes need
futex_atomic_cmpxchg_inatomic to be implemented, in addition to
certain syscalls needed for robust mutexes (and
architecture-independent kernel pieces for all the features in
question).  That is, as I understand it, they need
futex_atomic_cmpxchg_inatomic to *work* (not return an ENOSYS error).

The issues identified in my analysis relate to ARM, M68K, MicroBlaze,
MIPS and SPARC.

On ARM, whether futex_atomic_cmpxchg_inatomic works depends on the
kernel configuration.  As of 3.13, the condition for *not* working is
CONFIG_CPU_USE_DOMAINS && CONFIG_SMP.  As of 2.6.32 it was simply
CONFIG_SMP that meant the feature was not implemented.  I don't know
if there are any circumstances in which we can say "we can assume a
userspace glibc binary built with these options will never run on a
kernel with the problematic configuration", but at least for now I'm
just undefining the relevant __ASSUME_* macros for ARM.

On M68K, two of the three macros are undefined for kernels before
3.10, but as far as I can see __ASSUME_FUTEX_LOCK_PI is in the same
group needing futex_atomic_cmpxchg_inatomic support and so should be
undefined as well.

On MicroBlaze the required support was added in 2.6.33.

On MIPS, the support depends on cpu_has_llsc in the kernel - that is,
actual hardware LL/SC support (GCC and glibc for MIPS GNU/Linux rely
on the instructions being supported in some way, but it may be kernel
emulation; futex_atomic_cmpxchg_inatomic doesn't work with that
emulation).  The same condition as in GCC for indicating LL/SC support
may not be available is used for undefining the macros in glibc,
__mips == 1 || defined _MIPS_ARCH_R5900.  (Maybe we could in fact
desupport MIPS processors without the hardware support in glibc.)

On SPARC, 32-bit kernels don't support futex_atomic_cmpxchg_inatomic;
__arch64__ || __sparc_v9__ is used as the condition for binaries that
won't run on 32-bit kernels.

This patch is not tested beyond the sanity check of an x86_64 build.

	[BZ #9894]
	* sysdeps/unix/sysv/linux/kernel-features.h
	[__sparc__ && !__arch64__ && !__sparc_v9__]
	(__ASSUME_SET_ROBUST_LIST): Do not define.
	[__sparc__ && !__arch64__ && !__sparc_v9__]
	(__ASSUME_FUTEX_LOCK_PI): Likewise.
	[__sparc__ && !__arch64__ && !__sparc_v9__] (__ASSUME_REQUEUE_PI):
	Likewise.
	* sysdeps/unix/sysv/linux/arm/kernel-features.h
	(__ASSUME_FUTEX_LOCK_PI): Undefine.
	(__ASSUME_REQUEUE_PI): Likewise.
	(__ASSUME_SET_ROBUST_LIST): Likewise.
	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
	[__LINUX_KERNEL_VERSION < 0x030a00] (__ASSUME_FUTEX_LOCK_PI):
	Undefine.
	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	[__LINUX_KERNEL_VERSION < 0x020621] (__ASSUME_FUTEX_LOCK_PI):
	Likewise.
	[__LINUX_KERNEL_VERSION < 0x020621] (__ASSUME_REQUEUE_PI):
	Likewise.
	[__LINUX_KERNEL_VERSION < 0x020621] (__ASSUME_SET_ROBUST_LIST):
	Likewise.
	* sysdeps/unix/sysv/linux/mips/kernel-features.h
	[__mips == 1 || _MIPS_ARCH_R5900] (__ASSUME_FUTEX_LOCK_PI):
	Undefine.
	[__mips == 1 || _MIPS_ARCH_R5900] (__ASSUME_REQUEUE_PI): Likewise.
	[__mips == 1 || _MIPS_ARCH_R5900] (__ASSUME_SET_ROBUST_LIST):
	Likewise.
 2014-03-31 12:55:18 +00:00
Joseph Myers
acd7f096d7 Complete _BSD_SOURCE / _SVID_source followup cleanup. 
This patch completes the headers cleanup consequent on removal of
_BSD_SOURCE and _SVID_SOURCE (apart from any subsequent deprecations):

* #endif conditionals that referred to BSD or SVID are updated.

* Redundant __USE_* tests in cases involving __USE_MISC are removed.
  This includes cases such as __USE_MISC || __USE_ISOC99, where
  __USE_MISC is redundant (because __USE_MISC is only ever defined in
  the default / _DEFAULT_SOURCE / _GNU_SOURCE case, when __USE_ISOC99
  is also defined; the same applies to the non-XSI-extended POSIX
  versions), and cases involving __USE_GNU, where __USE_GNU is
  redundant (because if __USE_GNU is defined, so are the other __USE_*
  macros).  There may well be other cases of __USE_FOO || __USE_BAR
  tests that could be simplified because one macro implies the other;
  this patch only addresses cases involving __USE_MISC.

Tested x86_64.

	* bits/fcntl.h [__USE_MISC]: Remove redundant conditionals.
	* bits/sigaction.h [__USE_MISC]: Likewise.
	* bits/waitstatus.h: Update #endif comments.
	* ctype/ctype.h: Likewise.
	* dirent/dirent.h: Likewise.
	[__USE_MISC]: Remove redundant conditionals.
	* grp/grp.h: Update #endif comments.
	[__USE_GNU]: Remove redundant conditionals.
	[__USE_MISC]: Likewise.
	* inet/netinet/in.h [__USE_GNU]: Likewise.
	* io/sys/stat.h [__USE_MISC]: Likewise.
	* libio/bits/stdio-ldbl.h [__USE_MISC]: Likewise.
	* libio/bits/stdio.h: Update #endif comments.
	[__USE_MISC]: Remove redundant conditionals.
	* libio/bits/stdio2.h [__USE_MISC]: Likewise.
	* libio/stdio.h: Update #endif comments.
	[__USE_MISC]: Remove redundant conditionals.
	* math/bits/math-finite.h [__USE_MISC]: Likewise.
	* math/bits/mathcalls.h [__USE_MISC]: Likewise.
	* math/math.h: Update #else and #endif comments.
	[__USE_MISC]: Remove redundant conditionals.
	* misc/sys/uio.h: Update #endif comments.
	* posix/bits/unistd.h [__USE_MISC]: Remove redundant conditionals.
	* posix/glob.h [__USE_MISC]: Likewise.
	* posix/sys/types.h: Update #endif comments.
	[__USE_MISC]: Remove redundant conditionals.
	* posix/sys/wait.h: Update #endif comments.
	[__USE_MISC]: Remove redundant conditionals.
	* posix/unistd.h: Update #endif comments.
	[__USE_MISC]: Remove redundant conditionals.
	* pwd/pwd.h [__USE_GNU]: Likewise.
	[__USE_MISC]: Likewise.
	* resolv/netdb.h [__USE_GNU]: Likewise.
	* signal/signal.h: Update #endif comments.
	[__USE_MISC]: Remove redundant conditionals.
	* stdlib/stdlib.h: Update #else and #endif comments.
	[__USE_MISC]: Remove redundant conditionals.
	[__USE_GNU]: Likewise.
	* string/bits/string2.h [__USE_MISC]: Likewise.
	* string/string.h: Update #endif comments.
	[__USE_MISC]: Remove redundant conditionals.
	* sysdeps/m68k/m680x0/fpu/bits/mathinline.h [__USE_MISC]:
	Likewise.
	* sysdeps/mach/hurd/bits/fcntl.h [__USE_MISC]: Likewise.
	* sysdeps/mach/hurd/bits/stat.h [__USE_MISC]: Likewise.
	* sysdeps/unix/sysv/linux/alpha/bits/sigaction.h [__USE_MISC]:
	Likewise.
	* sysdeps/unix/sysv/linux/alpha/bits/stat.h [__USE_MISC]:
	Likewise.
	* sysdeps/unix/sysv/linux/bits/fcntl-linux.h: Update #endif
	comments.
	[__USE_MISC]: Remove redundant conditionals.
	* sysdeps/unix/sysv/linux/bits/in.h [__USE_GNU]: Likewise.
	* sysdeps/unix/sysv/linux/bits/sigaction.h [__USE_MISC]: Likewise.
	* sysdeps/unix/sysv/linux/bits/socket.h [__USE_GNU]: Likewise.
	* sysdeps/unix/sysv/linux/bits/stat.h [__USE_MISC]: Likewise.
	* sysdeps/unix/sysv/linux/ia64/bits/sigaction.h [__USE_MISC]:
	Likewise.
	* sysdeps/unix/sysv/linux/m68k/bits/stat.h [__USE_MISC]: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/sigaction.h [__USE_MISC]:
	Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/stat.h [__USE_MISC]: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/bits/stat.h [__USE_MISC]:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/bits/sigaction.h [__USE_MISC]:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/bits/stat.h [__USE_MISC]: Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/sigaction.h [__USE_MISC]:
	Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/stat.h [__USE_MISC]:
	Likewise.
	* sysdeps/unix/sysv/linux/x86/bits/stat.h [__USE_MISC]: Likewise.
	* sysdeps/x86/bits/string.h: Update #endif comments.
	* sysdeps/x86/fpu/bits/mathinline.h [__USE_MISC]: Remove redundant
	conditionals.
	* time/sys/time.h: Update #endif comments.
	* time/time.h: Likewise.
	[__USE_MISC]: Remove redundant conditionals.
 2014-02-21 21:45:26 +00:00
Joseph Myers
dd481ccffd Fix __ASSUME_ACCEPT4 issues (bug 16609). 
In <https://sourceware.org/ml/libc-alpha/2013-12/msg00008.html>,
Aurelien noted issues with the definition of __ASSUME_ACCEPT4, which I
discussed in more detail in
<https://sourceware.org/ml/libc-alpha/2013-12/msg00014.html>; these
are now bug 16609.

As previously noted, __ASSUME_ACCEPT4 is used in two ways:

* In OS-independent code, to mean "accept4 can be assumed to work
  rather than fail with ENOSYS".  It doesn't matter whether it's
  implemented with socketcall or a separate syscall.

* In Linux-specific code, to mean "the socketcall multiplex syscall
  can be assumed to handle the accept4 operation.  When used in
  Linux-specific code, it *never* refers to anything relating to the
  accept4 syscall, only to the socketcall multiplexer.

This patch splits the macro into separate __ASSUME_ACCEPT4_SOCKETCALL,
__ASSUME_ACCEPT4_SYSCALL and __ASSUME_ACCEPT4 to clarify the different
cases involved.  A macro __ASSUME_SOCKETCALL is added for convenience
in writing logic relating to all socketcall architectures.  In
addition, to address the issue of architectures where socketcall
support for accept4 was added before a separate syscall was added (and
so the separate syscall should not be used unless known to be present
or fallback to socketcall is available), a fourth macro
__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL is added to indicate that the
syscall became available at the same time as socketcall support.  This
is then used in the relevant places in a conditional determining
whether to undefine __NR_accept4 (the simple approach to avoiding the
syscall's presence causing problems; I didn't try to implement runtime
fallback from the syscall to socketcall).

Architecture-specific note: alpha defined __ASSUME_ACCEPT4 for 2.6.33
and later, but actually the syscall was added for alpha in 3.2, so
this patch uses the correct condition for __ASSUME_ACCEPT4_SYSCALL
there.

Tested x86_64, including that disassembly of the installed shared
libraries is unchanged by this patch.

	[BZ #16609]
	* sysdeps/unix/sysv/linux/kernel-features.h [__i386__ ||
	__powerpc__ || __s390__ || __sh__ || __sparc__]
	(__ASSUME_SOCKETCALL): Define.
	[__LINUX_KERNEL_VERSION && __ASSUME_SOCKETCALL]
	(__ASSUME_ACCEPT4_SOCKETCALL): Likewise.
	[(__LINUX_KERNEL_VERSION >= 0x02061c && (__x86_64__ || __sparc__))
	|| (__LINUX_KERNEL_VERSION >= 0x020625 && (__powerpc__ ||
	__sh__))] (__ASSUME_ACCEPT4_SYSCALL): Likewise.
	[__sparc__] (__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL): Likewise.
	[__ASSUME_ACCEPT4_SOCKETCALL || __ASSUME_ACCEPT4_SYSCALL]
	(__ASSUME_ACCEPT4): Define instead of using previous
	[__LINUX_KERNEL_VERSION >= 0x02061c && (__i386__ || __x86_64__ ||
	__powerpc__ || __sparc__ || __s390__)] condition.
	* sysdeps/unix/sysv/linux/aarch64/kernel-features.h
	(__ASSUME_ACCEPT4): Change to __ASSUME_ACCEPT4_SYSCALL.
	* sysdeps/unix/sysv/linux/accept4.c [__ASSUME_SOCKETCALL &&
	!__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL &&
	!__ASSUME_ACCEPT4_SYSCALL] (__NR_accept4): Undefine.
	[!__ASSUME_ACCEPT4]: Change condition to
	[!__ASSUME_ACCEPT4_SOCKETCALL].
	* sysdeps/unix/sysv/linux/alpha/kernel-features.h
	(__ASSUME_ACCEPT4): Change to __ASSUME_ACCEPT4_SYSCALL.  Correct
	condition to [__LINUX_KERNEL_VERSION >= 0x030200].
	* sysdeps/unix/sysv/linux/arm/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020624] (__ASSUME_ACCEPT4): Change to
	__ASSUME_ACCEPT4_SYSCALL.
	* sysdeps/unix/sysv/linux/i386/accept4.S [__ASSUME_ACCEPT4]:
	Change conditions to [__ASSUME_ACCEPT4_SOCKETCALL].
	* sysdeps/unix/sysv/linux/ia64/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x030300] (__ASSUME_ACCEPT4): Change to
	__ASSUME_ACCEPT4_SYSCALL.
	* sysdeps/unix/sysv/linux/internal_accept4.S [__ASSUME_SOCKETCALL
	&& !__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL &&
	!__ASSUME_ACCEPT4_SYSCALL] (__NR_accept4): Undefine.
	[__ASSUME_ACCEPT4]: Change condition to
	[__ASSUME_ACCEPT4_SOCKETCALL].
	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
	(__ASSUME_SOCKETCALL): Define.
	[__LINUX_KERNEL_VERSION >= 0x02061c] (__ASSUME_ACCEPT4): Remove.
	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	(__ASSUME_SOCKETCALL): Define.
	(__ASSUME_ACCEPT4): Remove.
	[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_ACCEPT4_SYSCALL):
	Define.
	* sysdeps/unix/sysv/linux/mips/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x02061f] (__ASSUME_ACCEPT4_SYSCALL):
	Likewise.
	* sysdeps/unix/sysv/linux/tile/kernel-features.h
	(__ASSUME_ACCEPT4): Change to __ASSUME_ACCEPT4_SYSCALL.

	* sysdeps/unix/sysv/linux/hppa/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020622] (__ASSUME_ACCEPT4_SYSCALL):
	Define.
 2014-02-20 17:50:31 +00:00
Andreas Schwab
3d15ff74fa Whitespace fixes 2014-02-10 20:24:03 +01:00
Andreas Schwab
73588a7223 Move m68k from ports to libc 2014-02-10 20:22:40 +01:00
Roland McGrath
14d44b191f * sysdeps/hppa: Directory removed, saved in ports repository. 
* sysdeps/mach/hppa: Likewise.
	* sysdeps/mach/hurd/hppa: Likewise.
	* sysdeps/unix/sysv/linux/hppa: Likewise.
	* configure.in (machine): Remove hppa* cases.
	* configure: Regenerated.
	* shlib-versions: Remove hppa cases.

	* sysdeps/m68k: Directory removed, saved in ports repository.
	* sysdeps/unix/bsd/m68k: Likewise.
	* sysdeps/unix/sysv/linux/m68k: Likewise.
	* configure.in (machine): Remove m68* cases.
	* configure: Regenerated.
 2006-02-28 10:18:39 +00:00
Ulrich Drepper
49bfc1fe3d * sysdeps/unix/sysv/linux/x86_64/lowlevellock.h 
(lll_robust_mutex_unlock): Avoid unnecessary wakeups.
	* sysdeps/unix/sysv/linux/i386/lowlevellock.h
	(lll_robust_mutex_unlock): Likewise.
 2006-02-17 08:07:21 +00:00
Ulrich Drepper
56e987ac48 * sysdeps/unix/sysv/linux/sparc/bits/mman.h: Define MADV_DONTFORK 
and MADV_DOFORK.
	* sysdeps/unix/sysv/linux/ia64/bits/mman.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/bits/mman.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/bits/mman.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/bits/mman.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/bits/mman.h: Likewise.
	* sysdeps/unix/sysv/linux/alpha/bits/mman.h: Likewise.
	* sysdeps/unix/sysv/linux/m68k/bits/mman.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/bits/mman.h: Likewise.
 2006-02-15 18:14:59 +00:00
Roland McGrath
6ddd37a4b3 * sysdeps/unix/sysv/linux/alpha/adjtime.c: Use <> instead of "" in 
#include for kernel-features.h.
	* sysdeps/unix/sysv/linux/alpha/dl-sysdep.c: Likewise.
	* sysdeps/unix/sysv/linux/alpha/fraiseexcpt.c: Likewise.
	* sysdeps/unix/sysv/linux/alpha/getitimer.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/getrusage.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/gettimeofday.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/msgctl.c: Likewise.
	* sysdeps/unix/sysv/linux/alpha/select.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/semctl.c: Likewise.
	* sysdeps/unix/sysv/linux/alpha/setitimer.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/settimeofday.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/shmctl.c: Likewise.
	* sysdeps/unix/sysv/linux/alpha/utimes.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/wait4.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/xstatconv.h: Likewise.
	* sysdeps/unix/sysv/linux/check_pf.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_getcpuclockid.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_getres.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_gettime.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_nanosleep.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_settime.c: Likewise.
	* sysdeps/unix/sysv/linux/dl-execstack.c: Likewise.
	* sysdeps/unix/sysv/linux/dl-osinfo.h: Likewise.
	* sysdeps/unix/sysv/linux/dl-sysdep.c: Likewise.
	* sysdeps/unix/sysv/linux/fstatvfs64.c: Likewise.
	* sysdeps/unix/sysv/linux/ftruncate64.c: Likewise.
	* sysdeps/unix/sysv/linux/futimes.c: Likewise.
	* sysdeps/unix/sysv/linux/futimesat.c: Likewise.
	* sysdeps/unix/sysv/linux/fxstat64.c: Likewise.
	* sysdeps/unix/sysv/linux/fxstatat64.c: Likewise.
	* sysdeps/unix/sysv/linux/getcwd.c: Likewise.
	* sysdeps/unix/sysv/linux/getdents.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/chown.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/fchown.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/fchownat.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/fcntl.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/fxstat.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/fxstatat.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/getegid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/geteuid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/getgid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/getresgid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/getresuid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/getrlimit.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/getuid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/lchown.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/lockf64.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/lxstat.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/mmap.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/mmap64.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/msgctl.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/posix_fadvise64.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/semctl.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/setegid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/seteuid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/setfsgid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/setfsuid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/setgid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/setgroups.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/setregid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/setresgid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/setresuid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/setreuid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/setrlimit.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/setuid.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/shmctl.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/xstat.c: Likewise.
	* sysdeps/unix/sysv/linux/ifreq.c: Likewise.
	* sysdeps/unix/sysv/linux/ldsodefs.h: Likewise.
	* sysdeps/unix/sysv/linux/lxstat64.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/chown.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/fchownat.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/ftruncate64.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/truncate64.c: Likewise.
	* sysdeps/unix/sysv/linux/mmap64.c: Likewise.
	* sysdeps/unix/sysv/linux/msgctl.c: Likewise.
	* sysdeps/unix/sysv/linux/netlinkaccess.h: Likewise.
	* sysdeps/unix/sysv/linux/opendir.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fe_nomask.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/fe_nomask.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/makecontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/prof-freq.c: Likewise.
	* sysdeps/unix/sysv/linux/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/chown.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/fchownat.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/lchown.c: Likewise.
	* sysdeps/unix/sysv/linux/semctl.c: Likewise.
	* sysdeps/unix/sysv/linux/setegid.c: Likewise.
	* sysdeps/unix/sysv/linux/seteuid.c: Likewise.
	* sysdeps/unix/sysv/linux/shmctl.c: Likewise.
	* sysdeps/unix/sysv/linux/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/sigpending.c: Likewise.
	* sysdeps/unix/sysv/linux/sigprocmask.c: Likewise.
	* sysdeps/unix/sysv/linux/sigsuspend.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/semctl.c: Likewise.
	* sysdeps/unix/sysv/linux/statvfs64.c: Likewise.
	* sysdeps/unix/sysv/linux/syslog.c: Likewise.
	* sysdeps/unix/sysv/linux/testrtsig.h: Likewise.
	* sysdeps/unix/sysv/linux/truncate64.c: Likewise.
	* sysdeps/unix/sysv/linux/utimes.c: Likewise.
	* sysdeps/unix/sysv/linux/xstat64.c: Likewise.
	* sysdeps/unix/sysv/linux/xstatconv.h: Likewise.
 2006-01-08 08:21:40 +00:00
Roland McGrath
9de06f3c77 * po/.cvsignore: List libc.pot.files, and not any .pot names. 
* manual/maint.texi (Porting): Don't mention Dist files.
	* sysdeps/alpha/soft-fp/Dist: File removed.
	* sysdeps/alpha/Dist: File removed.
	* sysdeps/i386/i686/Dist: File removed.
	* sysdeps/i386/soft-fp/Dist: File removed.
	* sysdeps/i386/Dist: File removed.
	* sysdeps/mips/soft-fp/Dist: File removed.
	* sysdeps/mips/mips64/soft-fp/Dist: File removed.
	* sysdeps/mips/mips64/Dist: File removed.
	* sysdeps/mips/Dist: File removed.
	* sysdeps/wordsize-32/Dist: File removed.
	* sysdeps/m68k/fpu/switch/Dist: File removed.
	* sysdeps/m68k/fpu/Dist: File removed.
	* sysdeps/powerpc/powerpc64/Dist: File removed.
	* sysdeps/powerpc/soft-fp/Dist: File removed.
	* sysdeps/powerpc/powerpc32/fpu/Dist: File removed.
	* sysdeps/powerpc/powerpc32/Dist: File removed.
	* sysdeps/powerpc/fpu/Dist: File removed.
	* sysdeps/powerpc/Dist: File removed.
	* sysdeps/unix/common/Dist: File removed.
	* sysdeps/unix/bsd/bsd4.4/Dist: File removed.
	* sysdeps/unix/bsd/Dist: File removed.
	* sysdeps/unix/sysv/linux/alpha/Dist: File removed.
	* sysdeps/unix/sysv/linux/i386/Dist: File removed.
	* sysdeps/unix/sysv/linux/mips/mips64/Dist: File removed.
	* sysdeps/unix/sysv/linux/mips/Dist: File removed.
	* sysdeps/unix/sysv/linux/m68k/Dist: File removed.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/Dist: File removed.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/Dist: File removed.
	* sysdeps/unix/sysv/linux/powerpc/aix/Dist: File removed.
	* sysdeps/unix/sysv/linux/powerpc/Dist: File removed.
	* sysdeps/unix/sysv/linux/sparc/sparc32/Dist: File removed.
	* sysdeps/unix/sysv/linux/sparc/sparc64/Dist: File removed.
	* sysdeps/unix/sysv/linux/sparc/Dist: File removed.
	* sysdeps/unix/sysv/linux/ia64/Dist: File removed.
	* sysdeps/unix/sysv/linux/s390/s390-64/Dist: File removed.
	* sysdeps/unix/sysv/linux/s390/Dist: File removed.
	* sysdeps/unix/sysv/linux/s390/s390-32/Dist: File removed.
	* sysdeps/unix/sysv/linux/sh/Dist: File removed.
	* sysdeps/unix/sysv/linux/x86_64/Dist: File removed.
	* sysdeps/unix/sysv/linux/hppa/Dist: File removed.
	* sysdeps/unix/sysv/linux/Dist: File removed.
	* sysdeps/unix/sysv/Dist: File removed.
	* sysdeps/unix/Dist: File removed.
	* sysdeps/generic/Dist: File removed.
	* sysdeps/sparc/sparc32/soft-fp/Dist: File removed.
	* sysdeps/sparc/sparc32/sparcv9/Dist: File removed.
	* sysdeps/sparc/sparc32/sparcv8/Dist: File removed.
	* sysdeps/sparc/sparc32/Dist: File removed.
	* sysdeps/sparc/sparc64/soft-fp/Dist: File removed.
	* sysdeps/sparc/sparc64/Dist: File removed.
	* sysdeps/sparc/Dist: File removed.
	* sysdeps/gnu/Dist: File removed.
	* sysdeps/ia64/fpu/Dist: File removed.
	* sysdeps/ia64/Dist: File removed.
	* sysdeps/mach/mips/Dist: File removed.
	* sysdeps/mach/hurd/alpha/Dist: File removed.
	* sysdeps/mach/hurd/i386/Dist: File removed.
	* sysdeps/mach/hurd/mips/Dist: File removed.
	* sysdeps/mach/hurd/powerpc/Dist: File removed.
	* sysdeps/mach/hurd/Dist: File removed.
	* sysdeps/s390/s390-64/Dist: File removed.
	* sysdeps/s390/Dist: File removed.
	* sysdeps/s390/s390-32/Dist: File removed.
	* sysdeps/sh/Dist: File removed.
	* sysdeps/posix/Dist: File removed.
	* sysdeps/ieee754/dbl-64/Dist: File removed.
	* sysdeps/ieee754/ldbl-128/Dist: File removed.
	* sysdeps/ieee754/flt-32/Dist: File removed.
	* sysdeps/ieee754/Dist: File removed.
	* sysdeps/x86_64/soft-fp/Dist: File removed.
	* sysdeps/x86_64/Dist: File removed.
	* sysdeps/hppa/Dist: File removed.

	* Makerules (common-clean): Don't remove distinfo file.
	($(objpfx)distinfo): Target removed.
	* manual/Makefile (mostlyclean): Don't remove distinfo file.
	(glibc-targets): Remove echo-distinfo.

	* scripts/list-sources.sh: New file.
	* Makefile (TAGS): New target.
	* po/Makefile (libc.pot, libc.pot.files): New targets.
	* Makeconfig (XGETTEXT): New variable.
	* Makerules ($(..)po/%.pot): Rule removed.
	(TAGS): Target removed.
	* Rules (subdir_TAGS): Target removed.
	* MakeTAGS: File removed.

	* Makefile (iconvdata/% localedata/% po/% manual/%): Depend on FORCE.
	* Makeconfig ($(all-Depend-files)): New targets with no-op commands.
 2006-01-08 06:46:10 +00:00