Commit Graph

4037 Commits

Author SHA1 Message Date
Joseph Myers
a2a76afe91 Remove __ASSUME_ADJ_OFFSET_SS_READ.
This patch removes the __ASSUME_ADJ_OFFSET_SS_READ macro (and
conditionals on whether ADJ_OFFSET_SS_READ is defined), now it can be
unconditionally assumed to be true and ADJ_OFFSET_SS_READ can be
assumed to be defined.

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

	* sysdeps/unix/sysv/linux/kernel-features.h
	(__ASSUME_ADJ_OFFSET_SS_READ): Remove macro.
	* sysdeps/unix/sysv/linux/adjtime.c (ADJTIME)
	[ADJ_OFFSET_SS_READ]: Make code unconditional.
	(ADJTIME) [!ADJ_OFFSET_SS_READ]: Remove conditional code.
2014-06-20 20:00:51 +00:00
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
Roland McGrath
45193bb814 S390: Convert fork.c to arch-fork.h 2014-06-13 16:26:38 -07:00
David S. Miller
f6fdf53382 Consolidate sparc clone, fork, and vfork implementations.
* nptl/sysdeps/unix/sysv/linux/sparc/sparc32/clone.S: Delete.
	* nptl/sysdeps/unix/sysv/linux/sparc/sparc32/pt-vfork.S: Delete.
	* nptl/sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S: Moved ...
	* sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S: ... here.
	* nptl/sysdeps/unix/sysv/linux/sparc/sparc64/clone.S: Delete.
	* nptl/sysdeps/unix/sysv/linux/sparc/sparc64/pt-vfork.S: Delete.
	* nptl/sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S: Moved ...
	* sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S: ... here.
	* sysdeps/unix/sysv/linux/sparc/fork.S: Delete.
	* sysdeps/unix/sysv/linux/sparc/pt-vfork.S: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc32/clone.S (__thread_start):
	Remove RESET_PID cpp guards.
	* sysdeps/unix/sysv/linux/sparc/sparc64/clone.S (__thread_start):
	Remove RESET_PID cpp guards.
	* sysdeps/unix/sysv/linux/sparc/vfork.S: Delete.
2014-06-13 14:47:53 -07:00
Andi Kleen
b7aa8caace Remove x86 assembler rwlock code
With the recent tuning the C version of rwlocks is basically the same
performance as the x86 assembler version for uncontended locks (with a
a few cycles near the run-to-run variability). For others it should not
matter anyways.

So remove the assembler code and use the C version like other
architectures.
2014-06-13 13:16:06 -07:00
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
Meador Inge
995a46bbfb get_nprocs: Only return explictly set cache values (BZ #16996)
The implementation of __get_nprocs uses a stactic variable to cache
the value of the current number of processors.  The caching breaks when
'time (NULL) == 0':

  $ cat nproc.c
  #include <stdio.h>
  #include <time.h>
  #include <sys/time.h>

  int main(int argc, char *argv[])
  {
    time_t t;
    struct timeval tv = {0, 0};
    printf("settimeofday({0, 0}, NULL) = %d\n", settimeofday(&tv, NULL));
    t = time(NULL);
    printf("Time: %d, CPUs: %d\n", (unsigned int)t, get_nprocs());
    return 0;
  }
  $ gcc -O3 nproc.c
  $ ./a.out
  settimeofday({0, 0}, NULL) = -1
  Time: 1401311578, CPUs: 4
  $ sudo ./a.out
  settimeofday({0, 0}, NULL) = 0
  Time: 0, CPUs: 0

The problem is with the condition used to check whether a cached
value should be returned or not:

  static int cached_result;
  static time_t timestamp;

  time_t now = time (NULL);
  time_t prev = timestamp;
  atomic_read_barrier ();
  if (now == prev)
    return cached_result;

This patch fixes the problem by ensuring that 'cached_result' has
been set at least once before returning it.
2014-06-13 14:02:04 +05:30
Roland McGrath
febf6cc58c Move SPARC public headers out of nptl/ 2014-06-12 15:04:34 -07:00
Roland McGrath
b14368b895 SPARC: Convert fork.c to arch-fork.h 2014-06-12 14:19:50 -07:00
Roland McGrath
463dc947b4 Get rid of nptl/sysdeps/pthread/ subdirectory 2014-06-12 13:48:47 -07:00
Roland McGrath
e876b09076 Consolidate NPTL sigprocmask. 2014-06-12 10:32:18 -07:00
Roland McGrath
45262aeedf Move SH code out of nptl/ subdirectory. 2014-06-12 09:05:54 -07:00
Chris Metcalf
c3a2ebe1f7 tile: Consolidate NPTL/non versions of vfork 2014-06-11 15:52:53 -04:00
Roland McGrath
c9cab3d2f9 Tile: Define TLS_DEFINE_INIT_TP 2014-06-11 12:25:27 -07:00
Roland McGrath
ba5ec6116c Alpha: Define TLS_DEFINE_INIT_TP 2014-06-11 12:23:35 -07:00
Roland McGrath
f12b481486 PowerPC: Define TLS_DEFINE_INIT_TP 2014-06-11 12:23:17 -07:00
Roland McGrath
9503784a07 AArch64: Define TLS_DEFINE_INIT_TP 2014-06-11 12:23:01 -07:00
Chris Metcalf
2d0fc4dcfc tile: move sysdeps/unix/sysv/linux/tile nptl files. 2014-06-10 14:10:17 -04:00
Bernard Ogden
2c3520d98d hppa: Remove lowlevellock.c.
The hppa port has no need of a custom lowlevellock.c, it should
use the generic version which is updated and correct. This
similarly fixes bug 15119 for hppa.
2014-06-09 23:22:20 -04:00
Roland McGrath
d752f0ccd7 m68k: Define TLS_DEFINE_INIT_TP 2014-06-09 15:54:19 -07:00
Roland McGrath
34eda6d1ba HPPA: Define TLS_DEFINE_INIT_TP 2014-06-09 14:04:45 -07:00
Roland McGrath
50f0a637b7 MIPS: Define TLS_DEFINE_INIT_TP 2014-06-09 13:47:38 -07:00
Roland McGrath
08f41f047c ARM: Define TLS_DEFINE_INIT_TP 2014-06-09 12:53:16 -07:00
Roland McGrath
962b744d06 Start cleaning up TLS initial value for pthread_create. 2014-06-09 12:52:55 -07:00
Ondřej Bílka
d89b3d80f9 Fix memory overrun in getifaddrs_internal. Fixes bug 15698. 2014-06-05 19:25:23 +02:00
Richard Henderson
71840409ea aarch64: Remove nptl/vfork.S 2014-06-03 11:28:11 -04:00
Richard Henderson
89b4bd6b60 aarch64: Consolidate NPTL/non versions of vfork
At the same time, incorporate the 0 -> 0x80000000 mapping
of the pid expected by raise.c.
2014-06-03 11:09:20 -04:00
Richard Henderson
111cc71489 aarch64: Consolidate NPTL/non versions of clone
At the same time, rely on non-clobbered registers across syscall
so that we eliminate the stack frame that we previously ignored
in the unwind info.
2014-06-03 11:04:04 -04:00
Roland McGrath
d936d379eb SH: Consolidate NPTL/non versions of vfork 2014-06-02 14:29:19 -07:00
Richard Henderson
f0712b543e aarch64: Remove PSEUDO_RET 2014-05-30 14:11:51 -04:00
Richard Henderson
74f31c1859 aarch64: Fix error return from __ioctl
Forgotten in ca3cfa40c1
where the error branch was moved from PSEUDO_RET.
2014-05-30 14:09:34 -04:00
Roland McGrath
5190c17f22 m68k: Convert fork.c to arch-fork.h 2014-05-30 18:44:55 +02:00
Richard Henderson
1670e207c5 aarch64: Rely on syscalls preserving registers
In several cases we've had asm routines rely on syscalls not clobbering
call-clobbered registers, and that's now deemed ABI.  So take advantage
of this in the INLINE_SYSCALL path as well.

Shrinks libc.so by about 1k.
2014-05-29 12:53:27 -04:00
Richard Henderson
11a28aee60 aarch64: Use tpidr_el0 rather than __errno_location in librt 2014-05-29 12:41:08 -04:00
Richard Henderson
a17e5ffb80 aarch64: Use tpidr_el0 rather than __read_tp in librt 2014-05-29 12:39:03 -04:00
Richard Henderson
b5be459771 aarch64: Improve syscall-cancel stack frame
One push instead of N; use stp/ldp to halve the insns.
2014-05-29 12:37:24 -04:00
Richard Henderson
645d44abe3 aarch64: Pass regno parameter to SINGLE_THREAD_P
Use cbz instead of cmp+b.eq.
2014-05-29 12:33:06 -04:00
Richard Henderson
a8b4f04ad7 aarch64: Share code in syscall-cancel.h
Fold nocancel and error handling paths.
2014-05-29 12:31:07 -04:00
Richard Henderson
af4e8ef944 aarch64: Tabify sysdep-cancel.h 2014-05-29 12:28:59 -04:00
Eric Wong
26b0d2e1a1 Avoid stat/fstat in statvfs/fstatvfs (BZ #15132)
Delay the use of stat/fstat until stat data is required.  When the
kernel returns ST_VALID, stat data is not used by __internal_statvfs.
2014-05-29 09:41:29 +05:30
Roland McGrath
0d3b7a190c SH: Consolidate NPTL/non versions of clone 2014-05-28 17:23:19 -07:00
Roland McGrath
1efe2bd9dc tile: Convert fork.c to arch-fork.h 2014-05-28 14:23:16 -04:00
Roland McGrath
30b6629ede IA64: Convert fork.c to arch-fork.h 2014-05-27 15:43:45 -07:00
Roland McGrath
a6bea3ca7b SH: Convert fork.c to arch-fork.h 2014-05-27 12:58:01 -07:00
Adhemerval Zanella
c7a8d66787 PowerPC: Move remaining nptl/sysdeps/unix/sysv/linux/powerpc/ files. 2014-05-26 11:45:14 -05:00
Adhemerval Zanella
daee7851e2 PowerPC: Move NPTL ABI headers to sysdeps. 2014-05-26 11:41:47 -05:00
Adhemerval Zanella
50a4081954 PowerPC: Move powerpc64 timer_*.c out of nptl/ 2014-05-26 11:41:46 -05:00
Adhemerval Zanella
8464c2a110 PowerPC: Consolidate NPTL/non versions of clone 2014-05-26 11:41:46 -05:00
Adhemerval Zanella
3d1024e8d1 PowerPC: Consolidate NPTL/non versions of vfork 2014-05-26 11:41:28 -05:00
Richard Henderson
aa2f176d6f arm,aarch64: Remove SINGLE_THREAD_P_PIC
This macro was removed by

2005-11-16  Daniel Jacobowitz  <dan@codesourcery.com>

but not applied to the (still separate) eabi port so necro'd
when the eabi port superceded the old abi.  It was thence
copied into the new AArch64 port.
2014-05-25 12:50:41 -04:00
Richard Henderson
ca3cfa40c1 aarch64: Tidy syscall error check
Move the error branch from the PSEUDO_RET macro to the PSEUDO macro.
This is in line with other architectures, and will enable further improvments.
2014-05-25 12:46:50 -04:00
Richard Henderson
6e6c2d01eb aarch64: Remove DOARGS/UNDOARGS macros
While they do something for AArch32, they're useless for AArch64.
2014-05-25 12:37:29 -04:00
Richard Henderson
c69abcee72 aarch64: Fix DO_CALL block comment 2014-05-25 12:33:00 -04:00
Richard Henderson
82aab97cbf alpha: Do non-default symbols in pt-vfork.S 2014-05-25 09:04:54 -07:00
Richard Henderson
bc89e9625f alpha: Move remaining files out of sysdeps/unix/sysv/linux/alpha/nptl/ 2014-05-23 11:20:48 -07:00
Richard Henderson
e2fa4bc2bb alpha: Consolidate NPTL/non versions of vfork 2014-05-23 11:20:44 -07:00
Richard Henderson
279b24e2e5 alpha: Merge standard and nptl clone.S 2014-05-23 11:20:41 -07:00
Richard Henderson
132c7f5f01 alpha: Remove nptl/fork.c
The merge at ab21431318 failed
to properly remove the file.
2014-05-23 11:20:37 -07:00
Roland McGrath
df54acbb7b AArch64: Convert fork.c to arch-fork.h 2014-05-21 18:45:00 +01:00
Richard Henderson
a6b3657be6 aarch64: Merge __local_multiple_threads offset with memory reference
This also highlights that we'd been loading 64-bits instead of
the proper 32-bits.  Caught by the linker as a relocation error,
since the variable happened to be unaligned for 64-bits.
2014-05-21 11:36:51 -04:00
Richard Henderson
3612eb8f25 aarch64: Merge rtld_errno offset with memory reference 2014-05-21 11:36:03 -04:00
Joseph Myers
175cef4163 Fix ARM build with GCC trunk.
sysdeps/unix/sysv/linux/arm/unwind-resume.c and
sysdeps/unix/sysv/linux/arm/unwind-forcedunwind.c have static
variables that are written in C code but only read from toplevel asms.
Current GCC trunk now optimizes away such apparently write-only static
variables, so causing a build failure.  This patch marks those
variables with __attribute_used__ to avoid that optimization.

Tested that this fixes the build for ARM.

	* sysdeps/unix/sysv/linux/arm/unwind-forcedunwind.c
	(libgcc_s_resume): Use __attribute_used__.
	* sysdeps/unix/sysv/linux/arm/unwind-resume.c (libgcc_s_resume):
	Likewise.
2014-05-20 21:27:13 +00:00
Richard Henderson
de9d8f2098 alpha: fix sa_flags type (BZ 16967) 2014-05-20 07:17:27 -07:00
Richard Henderson
4c0a1e6392 alpha: Remove bits/siginfo.h (BZ 16966)
Using the default header instead.  This matches the kernel, which also
uses the generic header.  Fixes the sys/wait.h conform issue, where
si_band had the wrong type.
2014-05-20 07:17:24 -07:00
Will Newton
a60339aaff AArch64: Fix handling of nocancel syscall failures
The current code for nocancel syscalls does not do a comparison of
the system call return value. This leads to code being generated
where the b.cs follows the svc instruction directly without setting
the flags on which the branch depends.

ChangeLog:

2014-05-20  Will Newton  <will.newton@linaro.org>

	* sysdeps/unix/sysv/linux/aarch64/nptl/sysdep-cancel.h (PSEUDO):
	Test the return value of the system call in the nocancel case.
2014-05-20 13:48:23 +01:00
Yvan Roux
7d05a8168b AArch64: Remove asm/ptrace.h inclusion in sys/user.h and sys/procfs.h
This patch fixes an issue observed by the Xen project, where including
signal.h exposes various PSR_MODE #defines.  This is due to the usage
in sys/user.h and sys/procfs.h of the struct user_pt_regs and
user_fpsimd_state included via asm/ptrace.h.  The namespace pollution
this inclusion introduce is already partially fixed with some #undef
of the PTRACE_* symbols, but other symbols like the PSR_MODE ones are
still present, and undefining them is not safe since a user can
include ptrace.h before user.h.

My proposition is to define the 2 structures we need in user.h and get
rid of the asm/ptrace.h inclusion.

Build and make check are clean on AArch64.

2014-05-20  Will Newton  <will.newton@linaro.org>
	    Yvan Roux  <yvan.roux@linaro.org>

	* sysdeps/unix/sysv/linux/aarch64/sys/user.h: Remove unused
	#include of asm/ptrace.h.
	(PTRACE_GET_THREAD_AREA): Remove #undef.
	(PTRACE_GETHBPREGS): Likewise.
	(PTRACE_SETHBPREGS): Likewise.
	(struct user_regs_struct): New structure.
	(struct user_fpsimd_struct): New structure.
	* sysdeps/unix/sysv/linux/aarch64/sys/procfs.h: Remove unused
	#include of asm/ptrace.h and second #include of sys/user.h.
	(PTRACE_GET_THREAD_AREA): Remove #undef.
	(PTRACE_GETHBPREGS): Likewise.
	(PTRACE_SETHBPREGS): Likewise.
	(ELF_NGREG): Use new struct user_regs_struct.
	(elf_fpregset_t): Use new struct user_fpsimd_struct.
2014-05-20 13:45:22 +01:00
Richard Henderson
e184a918bb alpha: Create __syscall_nocancel entry points 2014-05-17 11:25:19 -07:00
Richard Henderson
ab21431318 Merge remote-tracking branch 'origin/roland/nptl-alpha' 2014-05-17 11:20:44 -07:00
David S. Miller
f56c7a6ac4 Fix some termios.h conformtest failures on sparc.
* sysdeps/unix/sysv/linux/sparc/bits/termios.h (PAGEOUT, WRAP):
	Protect with __USE_GNU.
	(TIOCSET_TEMPT): Likewise.
	(TIOCM_LE, TIOCM_DTR, TIOCM_RTS, TIOCM_ST, TIOCM_SR, TIOCM_CTS,
	TIOCM_CAR, TIOCM_RNG, TIOCM_DSR, TIOCM_CD, TIOCM_RI): Remove as
	these are already provided in bits/ioctl-types.h
2014-05-17 11:11:53 -07:00
Roland McGrath
f75616b2b1 Fix __waitpid_nocancel link error. 2014-05-16 15:45:58 -07:00
Adhemerval Zanella
026b0fe4e7 PowerPC: clean BSD Terminal Modes expectation in termios.h
This patch guard the BSD definition for terminal modes in PowerPC
specific header fixing the following conformance failures:

FAIL: conform/POSIX/termios.h/conform
FAIL: conform/POSIX2008/termios.h/conform
FAIL: conform/UNIX98/termios.h/conform
2014-05-16 15:54:30 -05:00
Roland McGrath
3edeca8684 Alpha: Convert fork.c to arch-fork.h 2014-05-16 13:03:08 -07:00
Roland McGrath
fe39b021f4 ARM: Convert fork.c to arch-fork.h 2014-05-16 12:51:39 -07:00
Roland McGrath
1d1fc46ed1 Add stub arch-fork.h header. 2014-05-16 11:47:13 -07:00
Roland McGrath
def4bcb29d Split arch-fork.h from fork.h 2014-05-16 11:17:41 -07:00
Aurelien Jarno
d16e6ec7ca SPARC: add prlimit and prlimit64 in <bits/resource.h> (BZ #16943)
prlimit and prlimit64 have been added in the main <bits/resource.h>, but
not in the SPARC specific version. Fix that.

Note: this is Debian bug#703559, reported by Emilio Pozuelo Monfort
<pochu@debian.org>
2014-05-16 00:07:32 +02:00
Aurelien Jarno
d0583c4039 ptsname_r: don't leak uninitialized memory (BZ #16917)
If the fd refers to a terminal device, but not a pty master, the
TIOCGPTN ioctl returns with ENOTTY. This error is not caught, and the
possibly undefined buffer passed to ptsname_r is sent directly to the
stat64 syscall.

Fix this by using a fallback to the old method only if the TIOCGPTN
ioctl fails with EINVAL. This also fix the return value in that specific
case (it return ENOENT without this patch).

Also add tests to the ptsname_r function (and ptsname at the same time).

Note: this is Debian bug#741482, reported by Jakub Wilk <jwilk@debian.org>
2014-05-16 00:07:29 +02:00
Roland McGrath
a5d87b3db4 x86: Move abilist files out of nptl/ subdirectories. 2014-05-14 15:45:23 -07:00
Roland McGrath
039890a678 Move remaining files out of nptl/sysdeps/unix/sysv/linux/x86/. 2014-05-14 15:32:18 -07:00
Roland McGrath
65c89320e2 Fix mips fork after i386 reorganization. 2014-05-14 14:00:23 -07:00
Roland McGrath
348f8e8c26 Move remaining nptl/sysdeps/unix/sysv/linux/i386/ files. 2014-05-14 13:37:40 -07:00
Roland McGrath
5085af05bd Fix powerpc fork after i386 reorganization. 2014-05-14 13:28:40 -07:00
Roland McGrath
5aa618fb5b Update alpha and ia64 timer_*.c files for x86_64 file moves. 2014-05-14 13:26:25 -07:00
Roland McGrath
c96067bce5 Move remaining nptl/sysdeps/unix/sysv/linux/x86_64/ files. 2014-05-14 12:33:43 -07:00
Roland McGrath
ec136444ca x86: Consolidate NPTL fork. 2014-05-14 11:31:37 -07:00
Roland McGrath
2fbdf5339a Consolidate not-cancel.h files. 2014-05-14 11:06:36 -07:00
Roland McGrath
4eaae76517 Move x86_64 compat-timer.h out of nptl/ 2014-05-14 10:43:54 -07:00
Roland McGrath
3a51fb6047 Move x86_64 timer_*.c out of nptl/ 2014-05-14 10:35:39 -07:00
Roland McGrath
941d7dfd24 x86: Consolidate NPTL/non versions of clone 2014-05-14 10:16:27 -07:00
Roland McGrath
e27871374e x86: Consolidate NPTL/non versions of vfork 2014-05-14 09:44:39 -07:00
Roland McGrath
5675da1e84 ARM: Consolidate NPTL/non versions of vfork 2014-05-14 09:44:24 -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
5c521ecdda Clean up ARM old-ABI symbol versioning relics.
This patch cleans up some symbol versioning code in the ARM port that
exists only as relics of the old-ABI port, which was removed some time
ago.

The minimum symbol version in the ARM port is GLIBC_2.4 (the version
where the EABI port was introduced).  Thus, any SHLIB_COMPAT
conditionals where the later version is 2.4 or later are obsolete and
can be removed.  In addition, there is no need to set symbol versions
before 2.4 explicitly if the symbols would have a version of 2.4 by
default anyway.  This includes most of the entries in
sysdeps/unix/sysv/linux/arm/Versions: those for GLIBC_2.0 are for
libgcc unwind functions that aren't actually in ARM EABI glibc at all,
while those for GLIBC_2.2 and GLIBC_2.3.3 are for functions which for
the old-ABI port may have had versions different from the
architecture-independent default, but where for EABI the default
suffices (both the default and the version in that file map to 2.4, so
the entries in that file do nothing).  The GLIBC_2.1 entries are
needed (architecture-specific functions), but it seems less confusing
for those to say GLIBC_2.4, as the actual version those symbols in
fact have.

Various cases in the <fenv.h> functions where a function is defined as
__fe* with an fe* versioned alias are cleaned up just to define fe*
directly, as done e.g. on AArch64.  If in future we actually need an
__fe* name for use from C90 functions in libm as discussed recently,
of course we can add one on all architectures and make the fe* name
into a weak alias for that particular function, but for now the __fe*
names aren't needed.

In the case of posix_fadvise64, the __posix_fadvise64_l64 name and
posix_fadvise64 alias are kept as __posix_fadvise64_l64 is used in
posix_fadvise.  (For that to be a namespace-clean use, posix_fadvise64
needs to be a *weak* alias not a strong one as at present, but that's
an independent preexisting bug.)

(There remain references to GLIBC_2_2 in
sysdeps/unix/sysv/linux/arm/{msgctl.c,semctl.c,shmctl.c}.  As those
files are used by alpha which has a genuine 2.2 version for those
functions, I think those references need to stay as-is.)

Tested that the disassembly of installed shared libraries is unchanged
by this patch (though function names shown in disassembly change to no
longer have @@GLIBC_2.4, now those functions get versioned only by the
version map and not redundantly at assembler time) and that the ABI
tests pass.

	* sysdeps/arm/fclrexcpt.c (__feclearexcept): Rename to
	feclearexcept.  Remove symbol versioning code.
	* sysdeps/arm/fegetenv.c (__fegetenv): Rename to fegetenv.  Remove
	symbol versioning code.
	* sysdeps/arm/fesetenv.c (__fesetenv): Rename to fesetenv.  Remove
	symbol versioning code.
	* sysdeps/arm/feupdateenv.c (__feupdateenv): Rename to
	feupdateenv.  Remove symbol versioning code.
	* sysdeps/arm/fgetexcptflg.c (__fegetexceptflag): Rename to
	fegetexceptflag.  Remove symbol versioning code.
	* sysdeps/arm/fsetexcptflg.c (__fesetexceptflag): Rename to
	fesetexceptflag.  Remove symbol versioning code.
	* sysdeps/unix/sysv/linux/arm/Versions (libc): Remove GLIBC_2.0,
	GLIBC_2.2 and GLIBC_2.3.3 entries.  Change GLIBC_2.1 to GLIBC_2.4.
	* sysdeps/unix/sysv/linux/arm/posix_fadvise64.c
	(__posix_fadvise64_l32): Remove prototype.
	[SHLIB_COMPAT(libc, GLIBC_2_2, GLIBC_2_3_3)]: Remove conditional
	code.
2014-05-14 00:41:20 +00:00
Roland McGrath
5da9dfad43 Move NPTL public ABI headers for ARM to sysdeps/arm/nptl/. 2014-05-13 11:33:49 -07:00
Roland McGrath
58aa195d32 Verbatim NPTL file moves for ARM/Linux. 2014-05-13 10:04:20 -07:00
Roland McGrath
8c6d01f0b1 Consolidate NPTL configury for ARM/Linux. 2014-05-13 10:04:05 -07:00
Roland McGrath
bba6da4e1b Consolidate NPTL vs non clone.S for ARM. 2014-05-13 10:03:45 -07:00
Roland McGrath
e0db65176f Clean up __exit_thread. 2014-05-13 09:49:20 -07:00
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
Roland McGrath
95afbbe5fc Some configure-related decrufting. 2014-05-08 11:27:14 -07:00
Roland McGrath
0f58d25277 Move ARM internal unwind.h header to the right sysdeps directory. 2014-05-06 15:55:20 -07:00
Aurelien Jarno
83df9ad0cc SPARC: add EFD_SEMAPHORE in <bits/eventfd.h> (BZ #16916)
EFD_SEMAPHORE has been added in the main <bits/eventfd.h>, but not in
the SPARC specific version. Fix that.
2014-05-07 00:00:56 +02:00
Roland McGrath
fe6588457a Move rules for Linux-specific pldd program to Linux-specific Makefile. 2014-05-05 13:16:08 -07:00
Will Newton
6d96f5e4c0 ARM: Remove lowlevellock.c
lowlevellock.c for arm differs from the generic lowlevellock.c only in
insignificant ways, so can be removed. Happily, this fixes BZ 15119
(unnecessary busy loop in __lll_timedlock_wait on arm).

The notable differences between the arm and generic implementations are:

1) arm __lll_timedlock_wait has a fast path out if futex has been set
to 0 between since the function was called. This seems unlikely to
happen very often, so it seems at worst harmless to lose this fast
path.

2) Some function in arm's lowlevellock.c set futex to 2 if it was 1.
The generic version always sets the futex to 2. As futex can only be
0, 1 or 2 on entry into these functions, the behaviour is equivalent.
(If the futex manages to be 0 on entry then we've just lost another
unlikely fast path out.)

There are no test suite regressions.

Note that hppa and sparc also have their own lowlevellock.c. I believe
hppa can also be removed, so I'll send a separate patch for that
shortly. sparc's seems to be genuinely needed as it uses a different
locking structure.

Also note that the analysis at
https://sourceware.org/ml/libc-ports/2013-02/msg00021.html indicates a
further locking performance bug to fix - I've got a partial patch for
that which I can submit once I've finished testing.

2014-05-01  Bernard Ogden <bernie.ogden@linaro.org>

	[BZ #15119]
	* sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.c: Remove file.
2014-05-01 14:25:44 +01:00
David S. Miller
1d3d93ef73 Correct sparc CPP guards for EMT_TAGOVF.
* sysdeps/unix/sysv/linux/sparc/bits/siginfo.h (EMT_TAGOVF): Protect
	with __USE_GNU instead of XOPEN cpp guards.
2014-04-30 13:37:04 -07:00
David S. Miller
211d653cb6 Fix some sparc conform test failures in siginfo.h
* sysdeps/unix/sysv/linux/sparc/bits/siginfo.h (EMT_TAGOVF): Protect
	with XOPEN cpp guards.
2014-04-30 11:37:41 -07:00
Joseph Myers
d0f5b3f851 Increase minimum Linux kernel version to 2.6.32.
This patch increases the minimum Linux kernel version for glibc to
2.6.32, as discussed in the thread starting at
<https://sourceware.org/ml/libc-alpha/2014-01/msg00511.html>.

This patch just does the minimal change to arch_minimum_kernel
settings (and LIBC_LINUX_VERSION, which determines the minimum kernel
headers version, as it doesn't make sense for that to be older than
the minimum kernel that can be used at runtime).  Followups would be
expected to do, roughly and not necessarily precisely in this order:

* Remove __LINUX_KERNEL_VERSION checks in kernel-features.h files
  where those checks are always true / always false for kernels 2.6.32
  and above.

* Otherwise simplify/improve conditionals in those files (for example,
  where defining once in the main file then undefining in
  architecture-specific files makes things clearer than having lots of
  separate definitions of the same macro), possibly fixing in the
  process cases where a macro should optimally have been defined for a
  given architecture but wasn't.  (In the review in preparation for
  this version increase I checked what the right conditions should be
  for all macros in the main kernel-features.h whose definitions there
  would have been affected by the increase - but I only fixed that
  subset of the issues found where --enable-kernel=2.6.32 would have
  caused a kernel feature to be wrongly assumed to be present, not any
  cases where a feature is not assumed but could be assumed.)

* Remove conditionals on __ASSUME_* where they can now be taken to be
  always-true, and the definitions when the macros are only used in
  Linux-specific files.

* Split more architectures out of the main kernel-features.h (like
  ex-ports architectures), once various of the architecture
  conditionals there have been eliminated so the new
  architecture-specific files are no larger than actually necessary.

Tested x86_64.

2014-03-27  Joseph Myers  <joseph@codesourcery.com>

	[BZ #9894]
	* sysdeps/unix/sysv/linux/configure.ac (LIBC_LINUX_VERSION):
	Change to 2.6.32.
	(arch_minimum_kernel): Change all 2.6.16 settings to 2.6.32.
	* sysdeps/unix/sysv/linux/configure: Regenerated.
	* sysdeps/unix/sysv/linux/microblaze/configure.ac: Remove file.
	* sysdeps/unix/sysv/linux/microblaze/configure: Likewise.
	* sysdeps/unix/sysv/linux/tile/configure.ac: Likewise.
	* sysdeps/unix/sysv/linux/tile/configure: Likewise.
	* README: Update reference to required Linux kernel version.
	* manual/install.texi (Linux): Update reference to required Linux
	kernel headers version.
	* INSTALL: Regenerated.
2014-04-30 15:41:03 +00:00
Carlos O'Donell
5abebba403 Relocate hppa from ports to libc. 2014-04-29 04:20:39 -04:00
David S. Miller
a059d359d8 Fix sigaction conform test failures on sparc.
* sysdeps/unix/sysv/linux/sparc/bits/sigaction.h
	(struct sigaction): New struct member __glibc_reserved0, change
	type of sa_flags to int.
2014-04-22 17:47:12 -07:00
Will Newton
37d3500738 aarch64: Re-implement setcontext without rt_sigreturn syscall
The current implementation of setcontext uses rt_sigreturn to restore
the contents of registers. This contrasts with the way most other
architectures implement setcontext:

  powerpc64, mips, tile:

  Call rt_sigreturn if context was created by a call to a signal handler,
  otherwise restore in user code.

  powerpc32:

  Call swapcontext system call and don't call sigreturn or rt_sigreturn.

  x86_64, sparc, hppa, sh, ia64, m68k, s390, arm:

  Only support restoring "synchronous" contexts, that is contexts
  created by getcontext, and restoring in user code and don't call
  sigreturn or rt_sigreturn.

  alpha:

  Call sigreturn (but not rt_sigreturn) in all cases to do the restore.

The text of the setcontext manpage suggests that the requirement to be
able to restore a signal handler created context has been dropped from
SUSv2:

  If  the context was obtained by a call to a signal handler, then old
  standard text says that "program execution continues with the program
  instruction following the instruction interrupted by the signal".
  However, this sentence was removed in SUSv2, and the present verdict
  is "the result is unspecified".

Implementing setcontext by calling rt_sigreturn unconditionally causes
problems when used with sigaltstack as in BZ #16629. On this basis it
seems that aarch64 is broken and that new ports should only support
restoring contexts created with getcontext and do not need to call
rt_sigreturn at all.

This patch re-implements the aarch64 setcontext function to restore
the context in user code in a similar manner to x86_64 and other ports.

ChangeLog:

2014-04-17  Will Newton  <will.newton@linaro.org>

	[BZ #16629]
	* sysdeps/unix/sysv/linux/aarch64/setcontext.S (__setcontext):
	Re-implement to restore registers in user code and avoid
	rt_sigreturn system call.
2014-04-17 11:38:50 +01:00
Richard Henderson
ddb04724ed alpha: Remove alpha-linux pthread_once.c 2014-04-16 21:36:33 -07:00
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
Adhemerval Zanella
7ffa942302 PowerPC: define _CALL_ELF if compiler does not
This patch makes the configure adds -D_CALL_ELF=1 when compiler does
not define _CALL_ELF (versions before powerpc64le support).  It cleans
up compiler warnings on old compiler where _CALL_ELF is not defined
on powerpc64(be) builds.

It does by add a new config.make variable for configure-deduced
CPPFLAGS and accumulate into that (confix-extra-cppflags).  It also
generalizes libc_extra_cflags so it accumulates in sysdeps configure
fragmenets.
2014-04-06 16:48:08 -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
d7a68734f7 Fix futimesat for older MicroBlaze kernels (bug 16648).
Continuing the fixes for __ASSUME_* issues in preparation for moving
to a 2.6.32 minimum kernel version, this *untested* patch fixes bug
16648, the definition of __ASSUME_ATFCTS meaning that the futimesat
syscall is assumed for all MicroBlaze kernels despite not being
present until 2.6.33.

__ASSUME_ATFCTS controls conditionals relating to a lot of different
syscalls in Linux-specific code (fstatat64 faccessat fchmodat fchownat
futimesat newfstatat linkat mkdirat openat readlinkat renameat
symlinkat unlinkat mknodat), where whether newfstatat fstatat64
futimesat are used depends on the architecture, as well as controlling
whether openat64_not_cancel_3 is expected to work in
sysdeps/posix/getcwd.c.  The assumptions are all OK as of 2.6.32
except for this MicroBlaze case, and it's generally desirable to get
rid of as many of the __ASSUME_ATFCTS conditionals as possible, to
simplify the code (the fallbacks include potential unbounded dynamic
stack allocations).  Thus, rather than the simplest approach of
undefining __ASSUME_ATFCTS for older kernels on MicroBlaze, this patch
takes the approach of using the linux-generic implementation of
futimesat for MicroBlaze kernels before 2.6.33 (all such kernels have
the utimensat syscall).

	[BZ #16648]
	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_FUTIMESAT): Define.
	* sysdeps/unix/sysv/linux/microblaze/futimesat.c: New file.
2014-03-31 12:51:45 +00:00
Andreas Schwab
6da36183ee Fix use of uninitialized variable 2014-03-25 15:17:08 +01:00
Stefan Liebler
509361270b S390: Fix namespace violation in struct stat (BZ #16714). 2014-03-24 16:59:01 +01:00
Stefan Liebler
a2d86bf1ec S390: Correct type of sa_flags in struct sigaction for POSIX conformance
(BZ #16713).
2014-03-24 16:59:01 +01:00
Andreas Schwab
44152e4b05 Account for alloca use when collecting interface addresses (bug 16002)
To reproduce:

	# ip li add name dummy0 type dummy
	# site_id=$(head -c6 /dev/urandom | od -tx2 -An | tr ' ' ':')
	# for ((i = 0; i < 65536; i++)) do
	> ip ad ad $(printf fd80$site_id::%04x $i)/128 dev dummy0
	> done
	# (ulimit -s 900; getent ahosts localhost)
	# ip li de dummy0
2014-03-24 16:05:13 +01:00
Joseph Myers
1ca2d03e3e Fix -Wundef warnings for _ABI* on MIPS.
This patch fixes -Wundef warnings related to the _ABI* macros on MIPS.
GCC predefines only the _ABI* macro related to the ABI actually in
use, meaning that a conditional such as "#if _MIPS_SIM == _ABI64" is
true only for the ABI in question (all the macros are nonzero), but
produces a -Wundef warning for the other ABIs.  The normal approach to
using these macros is to include <sgidefs.h>, which ensures that all
three _ABI* macros are defined rather than just one; this patch does
so in the places that caused warnings (the bulk of the warnings
arising from <bits/wordsize.h>).  Tested that the warnings are fixed.

	* sysdeps/mips/bits/wordsize.h: Include <sgidefs.h>.
	* sysdeps/unix/sysv/linux/mips/getrlimit64.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/setrlimit64.c: Likewise.
2014-03-21 18:21:13 +00:00
Joseph Myers
b1115e916a Fix __ASSUME_PREADV and __ASSUME_PWRITEV for Alpha and MicroBlaze (bug 16649).
Reviewing (for all architectures, with a baseline kernel version of
2.6.32) the kernel support for features for which __ASSUME_* macros
would be affected by a move to 2.6.32 as minimum kernel version showed
up that __ASSUME_PREADV and __ASSUME_PWRITEV were wrongly defined for
MicroBlaze (despite the corresponding syscall table entries not being
wired up in the kernel) and Alpha for 2.6.30 and above (although the
support on Alpha was added in 2.6.33).  This patch makes the
kernel-features.h files undefine those macros for appropriate
versions.

	[BZ #16649]
	* sysdeps/unix/sysv/linux/alpha/kernel-features.h
	[__LINUX_KERNEL_VERSION < 0x020621] (__ASSUME_PREADV): Undefine.
	[__LINUX_KERNEL_VERSION < 0x020621] (__ASSUME_PWRITEV): Likewise.
	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	(__ASSUME_PREADV): Undefine.
	(__ASSUME_PWRITEV): Likewise.
2014-03-19 13:10:52 +00:00
Roland McGrath
7d375303f2 Add comments about non-Linux use of bits/mman-linux.h. 2014-03-18 14:58:15 -07:00
Roland McGrath
0283ecca51 Move bits/mman-linux.h out of sysdeps/unix/sysv/linux/.
This way, non-Linux ports using the Linux values for bits/mman.h
constants need not duplicate the header.
2014-03-18 14:48:09 -07:00
Will Newton
fede7a5ffa aarch64: Remove inaccurate comment from sysdep.h
This comment appears to have been copied from the ARM port where it
makes more sense.

2014-03-18  Will Newton  <will.newton@linaro.org>

	* sysdeps/unix/sysv/linux/aarch64/sysdep.h: Remove
	inaccurate comment.
2014-03-18 11:50:39 +00:00
Joseph Myers
abe6d90cc8 Fix __ASSUME_PSELECT for MicroBlaze (bug 16642).
Reviewing (for all architectures, with a baseline kernel version of
2.6.32) the kernel support for features for which __ASSUME_* macros
would be affected by a move to 2.6.32 as minimum kernel version showed
up that __ASSUME_PSELECT was wrongly defined for MicroBlaze, despite
the corresponding syscall table entry not being wired up in the
MicroBlaze kernel.

This patch makes the MicroBlaze kernel-features.h undefine
__ASSUME_PSELECT.  I'd also encourage wiring it up in the kernel (so
you can then make this #undef conditional, and eventually obsolete
once a recent-enough kernel is required).  I suspect it wasn't wired
up because of the mistaken comment in asm/unistd.h "obsolete ->
sys_pselect7" (there is no such syscall as pselect7).

	[BZ #16642]
	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	(__ASSUME_PSELECT): Undefine.
2014-03-12 17:29:24 +00:00
Joseph Myers
5c7808498e Fix POSIX namespace for <bits/siginfo.h> (bug 16674).
<bits/siginfo.h> causes symbols ILL_*, FPE_*, SEGV_* BUS_*, CLD_*,
POLL_* and TRAP_* to be exposed in <signal.h> (and <sys/wait.h>), even
though those symbols are not in non-XSI POSIX before POSIX.1-2008 and
even in POSIX.1-2008 the TRAP_* symbols are XSI-only.  This patch
conditions the symbols appropriately in the various <bits/siginfo.h>
implementations (various <signal.h> and <sys/wait.h> conformtest
issues remain for standards other than POSIX (1995/6)).  Tested
x86_64.

	[BZ #16674]
	* bits/siginfo.h (ILL_ILLOPC): Condition on [__USE_XOPEN_EXTENDED
	|| __USE_XOPEN2K8].
	(ILL_ILLOPN): Likewise.
	(ILL_ILLADR): Likewise.
	(ILL_ILLTRP): Likewise.
	(ILL_PRVOPC): Likewise.
	(ILL_PRVREG): Likewise.
	(ILL_COPROC): Likewise.
	(ILL_BADSTK): Likewise.
	(FPE_INTDIV): Likewise.
	(FPE_INTOVF): Likewise.
	(FPE_FLTDIV): Likewise.
	(FPE_FLTOVF): Likewise.
	(FPE_FLTUND): Likewise.
	(FPE_FLTRES): Likewise.
	(FPE_FLTINV): Likewise.
	(FPE_FLTSUB): Likewise.
	(SEGV_MAPERR): Likewise.
	(SEGV_ACCERR): Likewise.
	(BUS_ADRALN): Likewise.
	(BUS_ADRERR): Likewise.
	(BUS_OBJERR): Likewise.
	(TRAP_BRKPT): Condition on [__USE_XOPEN_EXTENDED].
	(TRAP_TRACE): Likewise.
	(CLD_EXITED): Condition on [__USE_XOPEN_EXTENDED ||
	__USE_XOPEN2K8].
	(CLD_KILLED): Likewise.
	(CLD_DUMPED): Likewise.
	(CLD_TRAPPED): Likewise.
	(CLD_STOPPED): Likewise.
	(CLD_CONTINUED): Likewise.
	(POLL_IN): Likewise.
	(POLL_OUT): Likewise.
	(POLL_MSG): Likewise.
	(POLL_ERR): Likewise.
	(POLL_PRI): Likewise.
	(POLL_HUP): Likewise.
	* sysdeps/unix/sysv/linux/alpha/bits/siginfo.h (ILL_ILLOPC):
	Likewise.
	(ILL_ILLOPN): Likewise.
	(ILL_ILLADR): Likewise.
	(ILL_ILLTRP): Likewise.
	(ILL_PRVOPC): Likewise.
	(ILL_PRVREG): Likewise.
	(ILL_COPROC): Likewise.
	(ILL_BADSTK): Likewise.
	(FPE_INTDIV): Likewise.
	(FPE_INTOVF): Likewise.
	(FPE_FLTDIV): Likewise.
	(FPE_FLTOVF): Likewise.
	(FPE_FLTUND): Likewise.
	(FPE_FLTRES): Likewise.
	(FPE_FLTINV): Likewise.
	(FPE_FLTSUB): Likewise.
	(SEGV_MAPERR): Likewise.
	(SEGV_ACCERR): Likewise.
	(BUS_ADRALN): Likewise.
	(BUS_ADRERR): Likewise.
	(BUS_OBJERR): Likewise.
	(BUS_MCEERR_AR): Likewise.
	(BUS_MCEERR_AO): Likewise.
	(TRAP_BRKPT): Condition on [__USE_XOPEN_EXTENDED].
	(TRAP_TRACE): Likewise.
	(CLD_EXITED): Condition on [__USE_XOPEN_EXTENDED ||
	__USE_XOPEN2K8].
	(CLD_KILLED): Likewise.
	(CLD_DUMPED): Likewise.
	(CLD_TRAPPED): Likewise.
	(CLD_STOPPED): Likewise.
	(CLD_CONTINUED): Likewise.
	(POLL_IN): Likewise.
	(POLL_OUT): Likewise.
	(POLL_MSG): Likewise.
	(POLL_ERR): Likewise.
	(POLL_PRI): Likewise.
	(POLL_HUP): Likewise.
	* sysdeps/unix/sysv/linux/bits/siginfo.h (ILL_ILLOPC): Likewise.
	(ILL_ILLOPN): Likewise.
	(ILL_ILLADR): Likewise.
	(ILL_ILLTRP): Likewise.
	(ILL_PRVOPC): Likewise.
	(ILL_PRVREG): Likewise.
	(ILL_COPROC): Likewise.
	(ILL_BADSTK): Likewise.
	(FPE_INTDIV): Likewise.
	(FPE_INTOVF): Likewise.
	(FPE_FLTDIV): Likewise.
	(FPE_FLTOVF): Likewise.
	(FPE_FLTUND): Likewise.
	(FPE_FLTRES): Likewise.
	(FPE_FLTINV): Likewise.
	(FPE_FLTSUB): Likewise.
	(SEGV_MAPERR): Likewise.
	(SEGV_ACCERR): Likewise.
	(BUS_ADRALN): Likewise.
	(BUS_ADRERR): Likewise.
	(BUS_OBJERR): Likewise.
	(BUS_MCEERR_AR): Likewise.
	(BUS_MCEERR_AO): Likewise.
	(TRAP_BRKPT): Condition on [__USE_XOPEN_EXTENDED].
	(TRAP_TRACE): Likewise.
	(CLD_EXITED): Condition on [__USE_XOPEN_EXTENDED ||
	__USE_XOPEN2K8].
	(CLD_KILLED): Likewise.
	(CLD_DUMPED): Likewise.
	(CLD_TRAPPED): Likewise.
	(CLD_STOPPED): Likewise.
	(CLD_CONTINUED): Likewise.
	(POLL_IN): Likewise.
	(POLL_OUT): Likewise.
	(POLL_MSG): Likewise.
	(POLL_ERR): Likewise.
	(POLL_PRI): Likewise.
	(POLL_HUP): Likewise.
	* sysdeps/unix/sysv/linux/ia64/bits/siginfo.h (ILL_ILLOPC):
	Likewise.
	(ILL_ILLOPN): Likewise.
	(ILL_ILLADR): Likewise.
	(ILL_ILLTRP): Likewise.
	(ILL_PRVOPC): Likewise.
	(ILL_PRVREG): Likewise.
	(ILL_COPROC): Likewise.
	(ILL_BADSTK): Likewise.
	(ILL_BADIADDR): Likewise.
	(ILL_BREAK): Likewise.
	(FPE_INTDIV): Likewise.
	(FPE_INTOVF): Likewise.
	(FPE_FLTDIV): Likewise.
	(FPE_FLTOVF): Likewise.
	(FPE_FLTUND): Likewise.
	(FPE_FLTRES): Likewise.
	(FPE_FLTINV): Likewise.
	(FPE_FLTSUB): Likewise.
	(FPE_DECOVF): Likewise.
	(FPE_DECDIV): Likewise.
	(FPE_DECERR): Likewise.
	(FPE_INVASC): Likewise.
	(FPE_INVDEC): Likewise.
	(SEGV_MAPERR): Likewise.
	(SEGV_ACCERR): Likewise.
	(SEGV_PSTKOVF): Likewise.
	(BUS_ADRALN): Likewise.
	(BUS_ADRERR): Likewise.
	(BUS_OBJERR): Likewise.
	(BUS_MCEERR_AR): Likewise.
	(BUS_MCEERR_AO): Likewise.
	(TRAP_BRKPT): Condition on [__USE_XOPEN_EXTENDED].
	(TRAP_TRACE): Likewise.
	(TRAP_BRANCH): Likewise.
	(TRAP_HWBKPT): Likewise.
	(CLD_EXITED): Condition on [__USE_XOPEN_EXTENDED ||
	__USE_XOPEN2K8].
	(CLD_KILLED): Likewise.
	(CLD_DUMPED): Likewise.
	(CLD_TRAPPED): Likewise.
	(CLD_STOPPED): Likewise.
	(CLD_CONTINUED): Likewise.
	(POLL_IN): Likewise.
	(POLL_OUT): Likewise.
	(POLL_MSG): Likewise.
	(POLL_ERR): Likewise.
	(POLL_PRI): Likewise.
	(POLL_HUP): Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/siginfo.h (ILL_ILLOPC): Likewise.
	(ILL_ILLOPN): Likewise.
	(ILL_ILLADR): Likewise.
	(ILL_ILLTRP): Likewise.
	(ILL_PRVOPC): Likewise.
	(ILL_PRVREG): Likewise.
	(ILL_COPROC): Likewise.
	(ILL_BADSTK): Likewise.
	(FPE_INTDIV): Likewise.
	(FPE_INTOVF): Likewise.
	(FPE_FLTDIV): Likewise.
	(FPE_FLTOVF): Likewise.
	(FPE_FLTUND): Likewise.
	(FPE_FLTRES): Likewise.
	(FPE_FLTINV): Likewise.
	(FPE_FLTSUB): Likewise.
	(SEGV_MAPERR): Likewise.
	(SEGV_ACCERR): Likewise.
	(BUS_ADRALN): Likewise.
	(BUS_ADRERR): Likewise.
	(BUS_OBJERR): Likewise.
	(BUS_MCEERR_AR): Likewise.
	(BUS_MCEERR_AO): Likewise.
	(TRAP_BRKPT): Condition on [__USE_XOPEN_EXTENDED].
	(TRAP_TRACE): Likewise.
	(CLD_EXITED): Condition on [__USE_XOPEN_EXTENDED ||
	__USE_XOPEN2K8].
	(CLD_KILLED): Likewise.
	(CLD_DUMPED): Likewise.
	(CLD_TRAPPED): Likewise.
	(CLD_STOPPED): Likewise.
	(CLD_CONTINUED): Likewise.
	(POLL_IN): Likewise.
	(POLL_OUT): Likewise.
	(POLL_MSG): Likewise.
	(POLL_ERR): Likewise.
	(POLL_PRI): Likewise.
	(POLL_HUP): Likewise.
	* sysdeps/unix/sysv/linux/s390/bits/siginfo.h (ILL_ILLOPC): Likewise.
	(ILL_ILLOPN): Likewise.
	(ILL_ILLADR): Likewise.
	(ILL_ILLTRP): Likewise.
	(ILL_PRVOPC): Likewise.
	(ILL_PRVREG): Likewise.
	(ILL_COPROC): Likewise.
	(ILL_BADSTK): Likewise.
	(FPE_INTDIV): Likewise.
	(FPE_INTOVF): Likewise.
	(FPE_FLTDIV): Likewise.
	(FPE_FLTOVF): Likewise.
	(FPE_FLTUND): Likewise.
	(FPE_FLTRES): Likewise.
	(FPE_FLTINV): Likewise.
	(FPE_FLTSUB): Likewise.
	(SEGV_MAPERR): Likewise.
	(SEGV_ACCERR): Likewise.
	(BUS_ADRALN): Likewise.
	(BUS_ADRERR): Likewise.
	(BUS_OBJERR): Likewise.
	(BUS_MCEERR_AR): Likewise.
	(BUS_MCEERR_AO): Likewise.
	(TRAP_BRKPT): Condition on [__USE_XOPEN_EXTENDED].
	(TRAP_TRACE): Likewise.
	(CLD_EXITED): Condition on [__USE_XOPEN_EXTENDED ||
	__USE_XOPEN2K8].
	(CLD_KILLED): Likewise.
	(CLD_DUMPED): Likewise.
	(CLD_TRAPPED): Likewise.
	(CLD_STOPPED): Likewise.
	(CLD_CONTINUED): Likewise.
	(POLL_IN): Likewise.
	(POLL_OUT): Likewise.
	(POLL_MSG): Likewise.
	(POLL_ERR): Likewise.
	(POLL_PRI): Likewise.
	(POLL_HUP): Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/siginfo.h (ILL_ILLOPC): Likewise.
	(ILL_ILLOPN): Likewise.
	(ILL_ILLADR): Likewise.
	(ILL_ILLTRP): Likewise.
	(ILL_PRVOPC): Likewise.
	(ILL_PRVREG): Likewise.
	(ILL_COPROC): Likewise.
	(ILL_BADSTK): Likewise.
	(FPE_INTDIV): Likewise.
	(FPE_INTOVF): Likewise.
	(FPE_FLTDIV): Likewise.
	(FPE_FLTOVF): Likewise.
	(FPE_FLTUND): Likewise.
	(FPE_FLTRES): Likewise.
	(FPE_FLTINV): Likewise.
	(FPE_FLTSUB): Likewise.
	(SEGV_MAPERR): Likewise.
	(SEGV_ACCERR): Likewise.
	(BUS_ADRALN): Likewise.
	(BUS_ADRERR): Likewise.
	(BUS_OBJERR): Likewise.
	(BUS_MCEERR_AR): Likewise.
	(BUS_MCEERR_AO): Likewise.
	(TRAP_BRKPT): Condition on [__USE_XOPEN_EXTENDED].
	(TRAP_TRACE): Likewise.
	(CLD_EXITED): Condition on [__USE_XOPEN_EXTENDED ||
	__USE_XOPEN2K8].
	(CLD_KILLED): Likewise.
	(CLD_DUMPED): Likewise.
	(CLD_TRAPPED): Likewise.
	(CLD_STOPPED): Likewise.
	(CLD_CONTINUED): Likewise.
	(POLL_IN): Likewise.
	(POLL_OUT): Likewise.
	(POLL_MSG): Likewise.
	(POLL_ERR): Likewise.
	(POLL_PRI): Likewise.
	(POLL_HUP): Likewise.
	* sysdeps/unix/sysv/linux/tile/bits/siginfo.h (ILL_ILLOPC): Likewise.
	(ILL_ILLOPN): Likewise.
	(ILL_ILLADR): Likewise.
	(ILL_ILLTRP): Likewise.
	(ILL_PRVOPC): Likewise.
	(ILL_PRVREG): Likewise.
	(ILL_COPROC): Likewise.
	(ILL_BADSTK): Likewise.
	(ILL_DBLFLT): Likewise.
	(ILL_HARDWALL): Likewise.
	(FPE_INTDIV): Likewise.
	(FPE_INTOVF): Likewise.
	(FPE_FLTDIV): Likewise.
	(FPE_FLTOVF): Likewise.
	(FPE_FLTUND): Likewise.
	(FPE_FLTRES): Likewise.
	(FPE_FLTINV): Likewise.
	(FPE_FLTSUB): Likewise.
	(SEGV_MAPERR): Likewise.
	(SEGV_ACCERR): Likewise.
	(BUS_ADRALN): Likewise.
	(BUS_ADRERR): Likewise.
	(BUS_OBJERR): Likewise.
	(BUS_MCEERR_AR): Likewise.
	(BUS_MCEERR_AO): Likewise.
	(TRAP_BRKPT): Condition on [__USE_XOPEN_EXTENDED].
	(TRAP_TRACE): Likewise.
	(CLD_EXITED): Condition on [__USE_XOPEN_EXTENDED ||
	__USE_XOPEN2K8].
	(CLD_KILLED): Likewise.
	(CLD_DUMPED): Likewise.
	(CLD_TRAPPED): Likewise.
	(CLD_STOPPED): Likewise.
	(CLD_CONTINUED): Likewise.
	(POLL_IN): Likewise.
	(POLL_OUT): Likewise.
	(POLL_MSG): Likewise.
	(POLL_ERR): Likewise.
	(POLL_PRI): Likewise.
	(POLL_HUP): Likewise.
	* sysdeps/unix/sysv/linux/x86/bits/siginfo.h (ILL_ILLOPC): Likewise.
	(ILL_ILLOPN): Likewise.
	(ILL_ILLADR): Likewise.
	(ILL_ILLTRP): Likewise.
	(ILL_PRVOPC): Likewise.
	(ILL_PRVREG): Likewise.
	(ILL_COPROC): Likewise.
	(ILL_BADSTK): Likewise.
	(FPE_INTDIV): Likewise.
	(FPE_INTOVF): Likewise.
	(FPE_FLTDIV): Likewise.
	(FPE_FLTOVF): Likewise.
	(FPE_FLTUND): Likewise.
	(FPE_FLTRES): Likewise.
	(FPE_FLTINV): Likewise.
	(FPE_FLTSUB): Likewise.
	(SEGV_MAPERR): Likewise.
	(SEGV_ACCERR): Likewise.
	(BUS_ADRALN): Likewise.
	(BUS_ADRERR): Likewise.
	(BUS_OBJERR): Likewise.
	(BUS_MCEERR_AR): Likewise.
	(BUS_MCEERR_AO): Likewise.
	(TRAP_BRKPT): Condition on [__USE_XOPEN_EXTENDED].
	(TRAP_TRACE): Likewise.
	(CLD_EXITED): Condition on [__USE_XOPEN_EXTENDED ||
	__USE_XOPEN2K8].
	(CLD_KILLED): Likewise.
	(CLD_DUMPED): Likewise.
	(CLD_TRAPPED): Likewise.
	(CLD_STOPPED): Likewise.
	(CLD_CONTINUED): Likewise.
	(POLL_IN): Likewise.
	(POLL_OUT): Likewise.
	(POLL_MSG): Likewise.
	(POLL_ERR): Likewise.
	(POLL_PRI): Likewise.
	(POLL_HUP): Likewise.
	* conform/Makefile (test-xfail-POSIX/signal.h/conform): Remove.
	(test-xfail-POSIX/sys/wait.h/conform): Likewise.
2014-03-07 23:57:56 +00:00
Joseph Myers
67737b8f07 Don't define __ASSUME_UTIMES for linux-generic architectures.
The __ASSUME_UTIMES macro describes whether the utimes syscall is
present.  For linux-generic architectures, it isn't (utimensat is
instead), so the macro should not be defined for them; this patch
removes the spurious definitions for such architectures.  (Those
definitions don't actually cause any user-visible bug, because
futimes.c doesn't use __ASSUME_UTIMES if __ASSUME_UTIMENSAT is
defined, and futimesat.c and utimes.c are overridden for
linux-generic, but the definitions are still logically incorrect.)

	* sysdeps/unix/sysv/linux/aarch64/kernel-features.h
	(__ASSUME_UTIMES): Remove.
	* sysdeps/unix/sysv/linux/tile/kernel-features.h
	(__ASSUME_UTIMES): Likewise.
2014-03-06 14:13:18 +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
bc688c1029 Fix __ASSUME_SENDMMSG issues (bug 16611).
Similar to the issues for accept4 and recvmmsg, __ASSUME_SENDMMSG is
also confused about whether it relates to function availability or
socketcall operation availability, and the conditions for the
definition are always wrong (sendmmsg appeared in Linux kernel 3.0,
not 2.6.39); this is now bug 16611.

This patch splits the macro into separate macros like those for
accept4 and recvmmsg, defining them for appropriate kernel versions.

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

	[BZ #16611]
	* sysdeps/unix/sysv/linux/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x030000 && __ASSUME_SOCKETCALL]
	(__ASSUME_SENDMMSG_SOCKETCALL): Define.
	[__LINUX_KERNEL_VERSION >= 0x030000 && (__i386__ || __x86_64__ ||
	__powerpc__ || __sh__ || __sparc__)] (__ASSUME_SENDMMSG_SYSCALL):
	Likewise.
	[__i386__ || __powerpc__ || __sh__ || __sparc__]
	(__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
	[__ASSUME_SENDMMSG_SOCKETCALL || __ASSUME_SENDMMSG_SYSCALL]
	(__ASSUME_SENDMMSG): Define instead of using previous
	[__LINUX_KERNEL_VERSION >= 0x020627] condition.
	* sysdeps/unix/sysv/linux/aarch64/kernel-features.h
	(__ASSUME_SENDMMSG_SYSCALL): Define.
	* sysdeps/unix/sysv/linux/alpha/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x030200] (__ASSUME_SENDMMSG_SYSCALL):
	Likewise.
	* sysdeps/unix/sysv/linux/arm/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL):
	Likewise.
	* sysdeps/unix/sysv/linux/ia64/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL):
	Likewise.
	* sysdeps/unix/sysv/linux/internal_sendmmsg.S [__ASSUME_SOCKETCALL
	&& !__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL &&
	!__ASSUME_SENDMMSG_SYSCALL] (__NR_sendmmsg): Undefine.
	[__ASSUME_SENDMMSG]: Change conditionals to
	[__ASSUME_SENDMMSG_SOCKETCALL].
	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x030300] (__ASSUME_SENDMMSG_SYSCALL):
	Define.
	* sysdeps/unix/sysv/linux/mips/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x030100] (__ASSUME_SENDMMSG_SYSCALL):
	Likewise.
	* sysdeps/unix/sysv/linux/sendmmsg.c [__ASSUME_SOCKETCALL &&
	!__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL &&
	!__ASSUME_SENDMMSG_SYSCALL] (__NR_sendmmsg): Undefine.
	[!__ASSUME_SENDMMSG]: Change conditional to
	[!__ASSUME_SENDMMSG_SOCKETCALL].
	* sysdeps/unix/sysv/linux/tile/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x030000] (__ASSUME_SENDMMSG_SYSCALL):
	Define.

	* sysdeps/unix/sysv/linux/hppa/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x030100] (__ASSUME_SENDMMSG_SYSCALL):
	Define.
2014-02-20 17:55:35 +00:00
Joseph Myers
0e31b18ca2 Fix __ASSUME_RECVMMSG issues (bug 16610).
Similar to the issues for accept4, __ASSUME_RECVMMSG is also confused
about whether it relates to function availability or socketcall
operation availability; this is now bug 16610.

Nothing actually tests __ASSUME_RECVMMSG for function availability,
but implicit in the definition in kernel-features.h is the idea that
it makes sense when the syscall is available and socketcall is not
being used.  As with accept4, there are architectures where the
syscall was added later than the socketcall operation, meaning that
assuming glibc is built with recent enough kernel headers, it does not
attempt to use socketcall for these operations and __ASSUME_RECVMMSG
gets defined for kernels >= 2.6.33 even when the syscall was only
added later.

This patch splits the macro into separate macros like those used for
accept4; having similar macro structure in both cases (and for
sendmmsg once I've dealt with that) seems likely to be less confusing
than having a different structure on the basis of nothing actually
needing to assume the recvmmsg function works.  Appropriate
definitions are added for all architectures.

Architecture-specific note: Tile's kernel-features.h says "TILE glibc
support starts with 2.6.36", which is accurate in that 2.6.36 was the
first kernel version with Tile support, and on that basis I've made
that header define __ASSUME_RECVMMSG_SYSCALL unconditionally.
However, Tile's configure.ac has arch_minimum_kernel=2.6.32.  Since
arch_minimum_kernel is meant to reflect only kernel.org kernel
versions, I think that should change to 2.6.36.  (If using glibc with
kernel versions from before a port went in kernel.org, it's your
responsibility to change arch_minimum_kernel in a local patch, and at
the same time to adjust any __ASSUME_* definitions that may not be
correct for your older kernel; for developing the official glibc it
should only ever be necessary to consider what official kernel.org
releases support.)

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

	[BZ #16610]
	* sysdeps/unix/sysv/linux/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020621 && __ASSUME_SOCKETCALL]
	(__ASSUME_RECVMMSG_SOCKETCALL): Define.
	[(__LINUX_KERNEL_VERSION >= 0x020621 && (__i386__ || __x86_64__ ||
	__sparc__)) || (__LINUX_KERNEL_VERSION >= 0x020625 && (__powerpc__
	|| __sh__))] (__ASSUME_RECVMMSG_SYSCALL): Likewise.
	[__i386__ || __sparc__]
	(__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
	[__ASSUME_RECVMMSG_SOCKETCALL || __ASSUME_RECVMMSG_SYSCALL]
	(__ASSUME_RECVMMSG): Define instead of using previous
	[__LINUX_KERNEL_VERSION >= 0x020621] condition.
	* sysdeps/unix/sysv/linux/aarch64/kernel-features.h
	(__ASSUME_RECVMMSG_SYSCALL): Define.
	* sysdeps/unix/sysv/linux/alpha/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
	Likewise.
	* sysdeps/unix/sysv/linux/arm/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
	Likewise.
	* sysdeps/unix/sysv/linux/ia64/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
	Likewise.
	* sysdeps/unix/sysv/linux/internal_recvmmsg.S [__ASSUME_SOCKETCALL
	&& !__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL &&
	!__ASSUME_RECVMMSG_SYSCALL] (__NR_recvmmsg): Undefine.
	[__ASSUME_RECVMMSG]: Change condition to
	[__ASSUME_RECVMMSG_SOCKETCALL].
	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
	Define.
	(__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
	* sysdeps/unix/sysv/linux/mips/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020621] (__ASSUME_RECVMMSG_SYSCALL):
	Likewise.
	* sysdeps/unix/sysv/linux/recvmmsg.c [__ASSUME_SOCKETCALL &&
	!__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL &&
	!__ASSUME_RECVMMSG_SYSCALL] (__NR_recvmmsg): Undefine.
	[!__ASSUME_RECVMMSG]: Change condition to
	[!__ASSUME_RECVMMSG_SOCKETCALL].
	* sysdeps/unix/sysv/linux/tile/kernel-features.h
	(__ASSUME_RECVMMSG_SYSCALL): Define.

	* sysdeps/unix/sysv/linux/hppa/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020622] (__ASSUME_RECVMMSG_SYSCALL):
	Define.
2014-02-20 17:53:08 +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
Joseph Myers
5d7b57cad5 Update ARM HWCAP data.
This patch updates the ARM HWCAP data (both bits/hwcap.h and
dl-procinfo.[ch]) to match Linux 3.13.

	* sysdeps/unix/sysv/linux/arm/bits/hwcap.h (HWCAP_ARM_VFPD32): New
	macro.
	(HWCAP_ARM_LPAE): Likewise.
	(HWCAP_ARM_EVTSTRM): Likewise.
	* sysdeps/unix/sysv/linux/arm/dl-procinfo.c (_dl_arm_cap_flags):
	Add vpfd32, lpae and evtstrm.
	* sysdeps/unix/sysv/linux/arm/dl-procinfo.h (_DL_HWCAP_COUNT):
	Increase to 22.
2014-02-20 03:29:34 +00:00
David Holsgrove
ef114eafbf [MicroBlaze]: Move MicroBlaze from ports to sysdeps.
2014-02-17  David Holsgrove <david.holsgrove@xilinx.com>

        * sysdeps/microblaze: Move directory from ports/sysdeps/microblaze.
        * sysdeps/unix/sysv/linux/microblaze: Move directory from
          ports/sysdeps/unix/sysv/linux/microblaze.
        * README: Add missing listing for microblaze*-*-linux-gnu.

Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
2014-02-17 11:08:21 +10:00
Mike Frysinger
c70a4b1db0 ia64: relocate out of ports/ subdir 2014-02-16 01:12:38 -05:00
Joseph Myers
498afc54df Combine __USE_BSD and __USE_SVID into __USE_MISC.
This patch cleans up following the obsoletion of _BSD_SOURCE and
_SVID_SOURCE by combining __USE_BSD and __USE_SVID into __USE_MISC.

The only non-mechanical part of this patch is the changes to
features.h; everything else is simple substitution of __USE_MISC for
the old macros.  Thus, this patch leaves obviously redundant
conditionals such as "defined __USE_MISC || defined __USE_MISC", and
does not update #endif comments where they referred to BSD or SVID in
words instead of the literal macro name.  This is intended to
facilitate patch review by separating the less mechanical changes from
these purely mechanical changes into a separate patch.  (I do intend
to integrate all the changes from
<https://sourceware.org/ml/libc-alpha/2013-12/msg00226.html>, which I
believe includes all the trailing comment updates, in subsequent
patches.)

Tested x86_64.

	* include/features.h (__USE_BSD): Remove macro definitions.
	(__USE_SVID): Likewise.
	(_BSD_SOURCE): Likewise.
	(_SVID_SOURCE): Likewise.
	[!defined _BSD_SOURCE && !defined _SVID_SOURCE]: Remove condition
	from definition of _DEFAULT_SOURCE.
	[_BSD_SOURCE || _SVID_SOURCE]: Change condition to
	[_DEFAULT_SOURCE].
	* bits/fcntl.h [__USE_BSD]: Change condition to [__USE_MISC].
	* bits/mman.h [__USE_BSD]: Likewise.
	* bits/termios.h [__USE_BSD]: Likewise.
	* bits/waitstatus.h [__USE_BSD]: Likewise.
	* ctype/ctype.h [__USE_SVID]: Likewise.
	* dirent/dirent.h [__USE_BSD]: Likewise.
	* grp/grp.h [__USE_SVID]: Likewise.
	[__USE_BSD]: Likewise.
	* inet/netinet/igmp.h [__USE_BSD]: Likewise.
	* io/fcntl.h [__USE_BSD]: Likewise.
	* io/ftw.h [__USE_BSD]: Likewise.
	* io/sys/stat.h [__USE_BSD]: Likewise.
	* libio/bits/stdio-ldbl.h [__USE_BSD]: Likewise.
	* libio/bits/stdio2.h [__USE_BSD]: Likewise.
	* libio/stdio.h [__USE_SVID]: Likewise.
	[__USE_BSD]: Likewise.
	* math/math.h [__USE_SVID]: Likewise.
	[__USE_BSD]: Likewise.
	* misc/bits/syslog-ldbl.h [__USE_BSD]: Likewise.
	* misc/bits/syslog.h [__USE_BSD]: Likewise.
	* misc/search.h [__USE_SVID]: Likewise.
	* misc/sys/mman.h [__USE_BSD]: Likewise.
	* misc/sys/syslog.h [__USE_BSD]: Likewise.
	* misc/sys/uio.h [__USE_BSD]: Likewise.
	* posix/bits/unistd.h [__USE_BSD]: Likewise.
	* posix/glob.h [__USE_BSD]: Likewise.
	* posix/regex.h [__USE_BSD]: Likewise.
	* posix/sys/types.h [__USE_BSD]: Likewise.
	[__USE_SVID]: Likewise.
	* posix/sys/utsname.h [__USE_SVID]: Likewise.
	* posix/sys/wait.h [__USE_BSD]: Likewise.
	[__USE_SVID]: Likewise.
	* posix/unistd.h [__USE_BSD]: Likewise.
	[__USE_SVID]: Likewise.
	* pwd/pwd.h [__USE_SVID]: Likewise.
	* resolv/netdb.h [__USE_BSD]: Likewise.
	* setjmp/setjmp.h [__USE_BSD]: Likewise.
	* signal/signal.h [__USE_BSD]: Likewise.
	[__USE_SVID]: Likewise.
	* socket/sys/socket.h [__USE_BSD]: Likewise.
	* stdlib/fmtmsg.h [__USE_SVID]: Likewise.
	* stdlib/stdlib.h [__USE_BSD]: Likewise.
	[__USE_SVID]: Likewise.
	* string/bits/string2.h [__USE_BSD]: Likewise.
	[__USE_SVID]: Likewise.
	* string/bits/string3.h [__USE_BSD]: Likewise.
	* string/endian.h [__USE_BSD]: Likewise.
	* string/string.h [__USE_SVID]: Likewise.
	[__USE_BSD]: Likewise.
	* string/strings.h [__USE_BSD]: Likewise.
	* sysdeps/generic/netinet/ip.h [__USE_BSD]: Likewise.
	* sysdeps/gnu/netinet/ip_icmp.h [__USE_BSD]: Likewise.
	* sysdeps/mach/hurd/bits/fcntl.h [__USE_BSD]: Likewise.
	* sysdeps/mach/hurd/bits/stat.h [__USE_BSD]: Likewise.
	* sysdeps/unix/sysv/linux/alpha/bits/mman.h [__USE_BSD]: Likewise.
	* sysdeps/unix/sysv/linux/alpha/bits/termios.h [__USE_BSD]:
	Likewise.
	* sysdeps/unix/sysv/linux/bits/fcntl-linux.h [__USE_BSD]:
	Likewise.
	* sysdeps/unix/sysv/linux/bits/mman-linux.h [__USE_BSD]: Likewise.
	* sysdeps/unix/sysv/linux/bits/sys_errlist.h [__USE_BSD]:
	Likewise.
	* sysdeps/unix/sysv/linux/bits/termios.h [__USE_BSD]: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/termios.h [__USE_BSD]:
	Likewise.
	* sysdeps/unix/sysv/linux/netinet/if_ether.h [__USE_BSD]:
	Likewise.
	* sysdeps/unix/sysv/linux/netinet/if_fddi.h [__USE_BSD]: Likewise.
	* sysdeps/unix/sysv/linux/netinet/if_tr.h [__USE_BSD]: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/bits/termios.h [__USE_BSD]:
	Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/termios.h [__USE_BSD]:
	Likewise.
	* sysdeps/x86/bits/string.h [__USE_BSD]: Likewise.
	* sysvipc/sys/ipc.h [__USE_SVID]: Likewise.
	* termios/termios.h [__USE_BSD]: Likewise.
	* time/sys/time.h [__USE_BSD]: Likewise.
	* time/time.h [__USE_BSD]: Likewise.
	[__USE_SVID]: Likewise.

	* sysdeps/unix/sysv/linux/hppa/bits/mman.h [__USE_BSD]: Change
	condition to [__USE_MISC].
2014-02-12 23:41:01 +00:00
Richard Henderson
68b7efaadb Relocate alpha from ports to libc
Also fixed the following whitespace nits to satisfy the push:

sysdeps/alpha/alphaev6/memset.S:142: space before tab in indent.
sysdeps/alpha/configure:1: new blank line at EOF.
sysdeps/alpha/fpu/e_sqrt.c:126: space before tab in indent.
sysdeps/alpha/preconfigure:1: new blank line at EOF.
sysdeps/unix/sysv/linux/alpha/syscalls.list:1: new blank line at EOF.
2014-02-12 07:00:06 -08:00
Marcus Shawcroft
75eff3fe90 Relocate AArch64 from ports to libc.
This patch moves the AArch64 port to the main sysdeps hierarchy.  The
move is essentially:

  git mv ports/sysdeps/aarch64 sysdeps/aarch64
  git mv ports/sysdeps/unix/sysv/linux/aarch64 sysdeps/unix/sysv/linux/aarch64

The README is updated and I've updated ChangeLog.aarch64 along the
lines of the ARM move.  The AArch64 build has been tested to confirm
that there were no changes in objdump -dr output or the shared
objects.
2014-02-11 11:36:00 +00:00
Joseph Myers
2ad7600be7 Move mips from ports to libc.
I've moved the MIPS port from ports to the main sysdeps hierarchy.
Beyond the README update, the move of the files was simply

git mv ports/sysdeps/mips sysdeps/mips
git mv ports/sysdeps/unix/mips sysdeps/unix/mips
git mv ports/sysdeps/unix/sysv/linux/mips sysdeps/unix/sysv/linux/mips

and in addition to the ChangeLog entries here, I put a note at the top
of ports/ChangeLog.mips similar to those in other files.

Tested that disassembly of installed shared libraries for mips is the
same before and after this patch (except for ld.so where paths in
assertions are involved, as for arm).

	* sysdeps/mips: Move directory from ports/sysdeps/mips.
	* sysdeps/unix/mips: Move directory from ports/sysdeps/unix/mips.
	* sysdeps/unix/sysv/linux/mips: Move directory from
	ports/sysdeps/unix/sysv/linux/mips.
	* README: Update listing for mips-*-linux-gnu and
	mips64-*-linux-gnu.

	* sysdeps/mips: Move directory to ../sysdeps/mips.
	* sysdeps/unix/mips: Move directory to ../sysdeps/unix/mips.
	* sysdeps/unix/sysv/linux/mips: Move directory to
	../sysdeps/unix/sysv/linux/mips.
2014-02-10 23:30:21 +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
Chris Metcalf
4372980f58 Move tilegx, tilepro, and linux-generic from ports to libc.
I've moved the TILE-Gx and TILEPro ports to the main sysdeps hierarchy,
along with the linux-generic ports infrastructure.  Beyond the README
update, the move was just

    git mv ports/sysdeps/tile sysdeps/tile
    git mv ports/sysdeps/unix/sysv/linux/tile \
      sysdeps/unix/sysv/linux/tile
    git mv ports/sysdeps/unix/sysv/linux/generic \
      sysdeps/unix/sysv/linux/generic

I updated the relevant ChangeLogs along the lines of the ARM move
in commit c6bfe5c4d7 and tested the 64-bit tilegx build to confirm that
there were no changes in "objdump -dr" output in the shared objects.
2014-02-10 11:04:39 -05:00
Ondřej Bílka
a1ffb40e32 Use glibc_likely instead __builtin_expect. 2014-02-10 15:07:12 +01:00
Mike Frysinger
d674667cba shm_open: sync with logic in sem_open
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2014-02-08 08:17:16 -05:00
Mike Frysinger
7c70f2272e linux: bits/in.h: sync with latest kernel headers
This pulls in the latest defines for {g,s}etsockopt.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2014-02-08 06:49:56 -05:00
Mike Frysinger
8da79b60ae linux_fsinfo.h: sync with current linux/magic.h
Import the current list of defines available in the kernel headers.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2014-02-08 06:39:10 -05:00
Joseph Myers
4ac049e1c9 Fix whitespace in ARM files to allow move. 2014-02-08 01:52:38 +00:00
Joseph Myers
c6bfe5c4d7 Move arm from ports to libc.
I've moved the ARM port from ports to the main sysdeps hierarchy.
Beyond the README update, the move of the files was simply

git mv ports/sysdeps/arm sysdeps/arm
git mv ports/sysdeps/unix/arm sysdeps/unix/arm
git mv ports/sysdeps/unix/sysv/linux/arm sysdeps/unix/sysv/linux/arm

and in addition to the ChangeLog entries here, I put a note at the top
of ports/ChangeLog.arm similar to that at the top of
ChangeLog.powerpc.  There is deliberately no NEWS change, as I think
it makes the most sense to put in a general note above all ports
having moved if we can achieve that for 2.20.

Tested that disassembly of installed shared libraries for arm is the
same before and after this patch, except for data (not instructions)
in ld.so (there are assertions in sysdeps/arm/dl-machine.h, and the
path by which that file is found, and so by which it appears in the
assertion message, changes as a result of the move).

	* sysdeps/arm: Move directory from ports/sysdeps/arm.
	* sysdeps/unix/arm: Move directory from ports/sysdeps/unix/arm.
	* sysdeps/unix/sysv/linux/arm: Move directory from
	ports/sysdeps/unix/sysv/linux/arm.
	* README: Update listing for arm-*-linux-gnueabi.

ports/ChangeLog.arm:
	* sysdeps/arm: Move directory to ../sysdeps/arm.
	* sysdeps/unix/arm: Move directory to ../sysdeps.arm.
	* sysdeps/unix/sysv/linux/arm: Move directory to
	../sysdeps/unix/sysv/linux/arm.
2014-02-08 01:49:39 +00:00
Allan McRae
bf06bcee84 Revert "Patch [1/4] async-signal safe TLS."
This reverts commit 69a17d9d24.
2014-02-06 08:46:20 +10:00
Carlos O'Donell
27e839f6f0 Fix comment in kernel-features.h.
Use "was" not "were."
2014-02-05 10:33:42 -05:00
Carlos O'Donell
f877c4f2bf Fix tst-setgetname for Linux kernels < 2.6.33.
Support for /proc/self/task/$tid/comm as added in Linux 2.6.33,
therefore since the test tst-setgetname relies on this functionality
to operate we must skip the test in kernels < 2.6.33. We wrap the
checks with __ASSUME_PROC_PID_TASK_COMM such that in the future when
we move arch_minimum_kernel to 2.6.33 we can remove this code.
2014-02-05 10:13:11 -05:00
Adhemerval Zanella
c01603f763 PowerPC: powerpc64le abilist for 2.17
This patch is the abifiles for powerpc64le based on GLIBC 2.17.
2014-02-04 09:49:34 -02:00
Kaz Kojima
0bad441c77 Restore ucontext ABI for soft-float sh4. 2014-01-24 12:56:12 +09:00
Kaz Kojima
7007c661ad Adjust SH specific fpu_control.h and ucontext.h files. 2014-01-23 14:22:58 +09:00
Andreas Krebbel
0f0c35e46e S/390: Merge 32 and 64 bit ucontext.h. 2014-01-22 18:44:35 +01:00
Adhemerval Zanella
d98720e07f PowerPC: Fix gettimeofday ifunc selection
The IFUNC selector for gettimeofday runs before _libc_vdso_platform_setup where
__vdso_gettimeofday is set. The selector then sets __gettimeofday (the internal
version used within GLIBC) to use the system call version instead of the vDSO one.
This patch changes the check if vDSO is available to get its value directly
instead of rely on __vdso_gettimeofday.

This patch changes it by getting the vDSO value directly.

It fixes BZ#16431.
2014-01-20 12:29:51 -06:00
Adhemerval Zanella
736c304a1a PowerPC: Fix ftime gettimeofday internal call returning bogus data
This patches fixes BZ#16430 by setting a different symbol for internal
GLIBC calls that points to ifunc resolvers. For PPC32, if the symbol
is defined as hidden (which is the case for gettimeofday and time) the
compiler will create local branches (symbol@local) and linker will not
create PLT calls (required for IFUNC). This will leads to internal symbol
calling the IFUNC resolver instead of the resolved symbol.
For PPC64 this behavior does not occur because a call to a function in
another translation unit might use a different toc pointer thus requiring
a PLT call.
2014-01-16 06:53:18 -06:00
Andreas Krebbel
05d138ef07 S/390: Make ucontext_t extendible. 2014-01-07 09:42:23 +01:00
Andreas Krebbel
93a45ff1ca S/390: Make jmp_buf extendible. 2014-01-07 09:36:31 +01:00
Mike Frysinger
9341dde4d5 ptrace.h: add __ prefix to ptrace_peeksiginfo_args
All the other ptrace structures in this file have a __ prefix except this
new one.  This in turn causes build problems for most packages that try to
use ptrace such as strace:

gcc -DHAVE_CONFIG_H -I. -I../..  -I../../linux/x86_64 -I../../linux \
	-I./linux  -Wall -Wwrite-strings -g -O2 -MT process.o -MD -MP \
	-MF .deps/process.Tpo -c -o process.o ../../process.c
In file included from ../../process.c:63:0:
/usr/include/linux/ptrace.h:58:8: error: redefinition of 'struct ptrace_peeksiginfo_args'
 struct ptrace_peeksiginfo_args {
        ^
In file included from ../../defs.h:159:0,
                 from ../../process.c:37:
/usr/include/sys/ptrace.h:191:8: note: originally defined here
 struct ptrace_peeksiginfo_args
        ^

Since this struct was introduced in glibc-2.18, there shouldn't be any
real regressions with adding the __ prefix.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2014-01-06 08:07:33 -05:00
Mike Frysinger
20f4a8d993 tst-fanotify: switch to AC_DEFINE
Reported-by: Joseph S. Myers <joseph@codesourcery.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2014-01-04 08:34:01 -05:00
Allan McRae
d4697bc93d Update copyright notices with scripts/update-copyrights 2014-01-01 22:00:23 +10:00
Mike Frysinger
c8590f9d9e tst-fanotify: check for linux/fanotify.h existence
We support older kernels that lack this header, so check for it
before we try to use it.

Reported-by: Adhemerval Zanella <azanella@linux.vnet.ibm.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-12-31 03:16:42 -05:00
Joseph Myers
ef7344f09c Flatten sysdeps/unix/bsd/bsd4.4 into sysdeps/unix/bsd.
As discussed in
<https://sourceware.org/ml/libc-alpha/2012-04/msg00840.html> and
<https://sourceware.org/ml/libc-alpha/2012-04/msg00989.html>, it seems
appropriate to flatten sysdeps/unix/bsd/bsd4.4 into sysdeps/unix/bsd.

The bulk of the patch is just moving files.  The only other changes
are: update paths in sysdeps/mach/hurd/Implies and
sysdeps/unix/sysv/linux/wait3.c; merge the two syscalls.list files,
with the removal of syscalls that were in
sysdeps/unix/bsd/syscalls.list but overridden in the bsd4.4 directory
by .c files there.

Tested x86_64.  The installed shared libraries are identical before
and after the patch except for libc.so where the move of wait3.c
(included by sysdeps/unix/sysv/linux/wait3.c) affects debug info, but
the disassembly is unchanged.

	* sysdeps/mach/hurd/Implies: Change unix/bsd/bsd4.4 to unix/bsd.
	* sysdeps/unix/bsd/syscalls.list (chflags): Add entry from
	sysdeps/unix/bsd/bsd4.4/syscalls.list.
	(fchflags): Likewise.
	(revoke): Likewise.
	(setlogin): Likewise.
	(sigaltstack): Likewise.
	(wait4): Likewise.
	(sigblock): Remove.
	(sigsetmask): Likewise.
	(wait3): Likewise.
	(waitpid): Likewise.
	* sysdeps/unix/bsd/bsd4.4/syscalls.list: Remove file.
	* sysdeps/unix/sysv/linux/wait3.c: Update directory of included
	file.
	* sysdeps/unix/bsd/bsd4.4/Makefile: Move to ...
	* sysdeps/unix/bsd/Makefile: ... here.
	* sysdeps/unix/bsd/bsd4.4/Versions: Move to ...
	* sysdeps/unix/bsd/Versions: ... here.
	* sysdeps/unix/bsd/bsd4.4/bits/sockaddr.h: Move to ...
	* sysdeps/unix/bsd/bits/sockaddr.h: ... here.
	* sysdeps/unix/bsd/bsd4.4/cmsg_nxthdr.c: Move to ...
	* sysdeps/unix/bsd/cmsg_nxthdr.c: ... here.
	* sysdeps/unix/bsd/bsd4.4/sigblock.c: Move to ...
	* sysdeps/unix/bsd/sigblock.c: ... here.
	* sysdeps/unix/bsd/bsd4.4/sigsetmask.c: Move to ...
	* sysdeps/unix/bsd/sigsetmask.c: ... here.
	* sysdeps/unix/bsd/bsd4.4/sigvec.c: Move to ...
	* sysdeps/unix/bsd/sigvec.c: ... here.
	* sysdeps/unix/bsd/bsd4.4/tcdrain.c: Move to ...
	* sysdeps/unix/bsd/tcdrain.c: ... here.
	* sysdeps/unix/bsd/bsd4.4/tcgetattr.c: Move to ...
	* sysdeps/unix/bsd/tcgetattr.c: ... here.
	* sysdeps/unix/bsd/bsd4.4/tcsetattr.c: Move to ...
	* sysdeps/unix/bsd/tcsetattr.c: ... here.
	* sysdeps/unix/bsd/bsd4.4/wait.c: Move to ...
	* sysdeps/unix/bsd/wait.c: ... here.
	* sysdeps/unix/bsd/bsd4.4/wait3.c: Move to ...
	* sysdeps/unix/bsd/wait3.c: ... here.
	* sysdeps/unix/bsd/bsd4.4/waitpid.c: Move to ...
	* sysdeps/unix/bsd/waitpid.c: ... here.
2013-12-22 14:49:48 +00:00
Paul Pluzhnikov
69a17d9d24 Patch [1/4] async-signal safe TLS.
2013-12-18  Andrew Hunter  <ahh@google.com>

	* sysdeps/generic/ldsodefs.h (_dl_mask_all_signals): New prototype.
	(_dl_unmask_signals): Likewise.
	* sysdeps/mach/hurd/dl-sysdep.h (_dl_mask_all_signals): New stub.
	(_dl_unmask_all_signals): Likewise.
	* sysdeps/unix/sysv/linux/dl-sysdep.h (_dl_mask_all_signals): New prototype.
	(_dl_unmask_all_signals): Likewise.
	* sysdeps/unix/sysv/linux/dl-sysdep.c (_dl_mask_all_signals): New function.
	(_dl_unmask_signals): Likewise.
2013-12-18 15:07:11 -08:00
Joseph Myers
2377648767 Update powerpc-nofpu localplt.data for fegetround hidden_proto / hidden_def.
My recent changes that added libm_hidden_proto / libm_hidden_def for
fegetround had the side effect of removing the need for a
localplt.data entry for fegetround for powerpc-nofpu.  This patch
removes that entry.  Tested powerpc-nofpu.

	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/nptl/localplt.data:
	Don't expect fegetround reference in libm.so.
2013-12-18 15:17:39 +00:00
Adhemerval Zanella
69bbc63d88 PowerPC: Adjust multiarch Implies for PowerPC64
This patch adds Implies files on multiarch folder for POWER chips so
multirach is enabled when building with --with-cpu and powerN
option.
2013-12-13 14:58:02 -05:00
Adhemerval Zanella
5e6a4d4b9e PowerPC: Adjust multiarch Implies for PowerPC64
This patch adds Implies files on multiarch folder for POWER chips so
multirach is enabled when building with --with-cpu and powerN
option.
2013-12-13 14:29:27 -05:00
Adhemerval Zanella
ccdc8438dc PowerPC: Adjust multiarch Implies for PowerPC32
This patch adds Implies files on multiarch folder for POWER chips so
multirach is enabled when building with --with-cpu and powerN option.
2013-12-06 05:47:05 -06:00
Adhemerval Zanella
9cbb3aabb5 PowerPC: change sysdeps fpu folder
This patch makes the fpu/multiarch folder appears in front of the
powerpc/fpu folder.
2013-12-06 05:47:02 -06:00
Adhemerval Zanella
4c628e0026 PowerPC: initial support for multilib for PowerPC32
This patch add a empty Makefile, the C IFUNC helper macros, and a empty
available IFUNC implementation enumeration.
2013-12-06 05:46:59 -06:00
Kaz Kojima
8517800fab Add SH implementation of sotruss-lib.c and c++-types.data. 2013-12-06 08:22:22 +09:00
Adhemerval Zanella
eb5ad6b9bc PowerPC: Add systemtap static probe points in setjmp/longjmp
This patch add static probes for setjmp/longjmp in the way gdb expects,fixing
the gdb.base/longjmp.exp gdb testcases.

It changes the symbol_name and use macros to to avoid change the probe names
and ending up adding more logic on GDB (since with the expected name
GDB work seamlessly).
2013-12-05 07:44:07 -06:00
Ulrich Weigand
5b118558f9 PowerPC64 ELFv2 ABI 6/6: Bump ld.so soname version number
To avoid having a ELFv2 binary accidentally picking up an old ABI ld.so,
this patch bumps the soname to ld64.so.2.

In theory (or for testing purposes) this will also allow co-installing
ld.so versions for both ABIs on the same system.  Note that the kernel
will already be able to load executables of both ABIs.  However, there
is currently no plan to use that theoretical possibility in a any
supported distribution environment ...

Note that in order to check which ABI to use, we need to invoke the
compiler to check the _CALL_ELF macro; this is done in a new configure
check in sysdeps/unix/sysv/linux/powerpc/powerpc64/configure.ac,
replacing the hard-coded value of default-abi in the Makefile.
2013-12-04 07:44:39 -06:00
Ulrich Weigand
8b8a692cfd PowerPC64 ELFv2 ABI 4/6: Stack frame layout changes
This updates glibc for the changes in the ELFv2 relating to the
stack frame layout.  These are described in more detail here:
http://gcc.gnu.org/ml/gcc-patches/2013-11/msg01149.html
http://gcc.gnu.org/ml/gcc-patches/2013-11/msg01146.html

Specifically, the "compiler and linker doublewords" were removed,
which has the effect that the save slot for the TOC register is
now at offset 24 rather than 40 to the stack pointer.

In addition, a function may now no longer necessarily assume that
its caller has set up a 64-byte register save area its use.

To address the first change, the patch goes through all assembler
files and replaces immediate offsets in instructions accessing the
ABI-defined stack slots by symbolic offsets.  Those already were
defined in ucontext_i.sym and used in some of the context routines,
but that doesn't really seem like the right place for those defines.

The patch instead defines those symbolic offsets in sysdeps.h,
in two variants for the old and new ABI, and uses them systematically
in all assembler files, not just the context routines.

The second change only affected a few assembler files that used
the save area to temporarily store some registers.  In those
cases where this happens within a leaf function, this patch
changes the code to store those registers to the "red zone"
below the stack pointer.  Otherwise, the functions already allocate
a stack frame, and the patch changes them to add extra space in
these frames as temporary space for the ELFv2 ABI.
2013-12-04 07:41:39 -06:00
Ulrich Weigand
696caf1d00 PowerPC64 ELFv2 ABI 2/6: Remove function descriptors
This patch adds support for the ELFv2 ABI feature to remove function
descriptors.  See this GCC patch for in-depth discussion:
http://gcc.gnu.org/ml/gcc-patches/2013-11/msg01141.html

This mostly involves two types of changes: updating assembler source
files to the new logic, and updating the dynamic loader.

After the refactoring in the previous patch, most of the assembler source
changes can be handled simply by providing ELFv2 versions of the
macros in sysdep.h.   One somewhat non-obvious change is in __GI__setjmp:
this used to "fall through" to the immediately following __setjmp ENTRY
point.  This is no longer safe in the ELFv2 since ENTRY defines both
a global and a local entry point, and you cannot simply fall through
to a global entry point as it requires r12 to be set up.

Also, makecontext needs to be updated to set up registers according to
the new ABI for calling into the context's start routine.

The dynamic linker changes mostly consist of removing special code
to handle function descriptors.  We also need to support the new PLT
and glink format used by the the ELFv2 linker, see:
https://sourceware.org/ml/binutils/2013-10/msg00376.html

In addition, the dynamic linker now verifies that the dynamic libraries
it loads match its own ABI.

The hack in VDSO_IFUNC_RET to "synthesize" a function descriptor
for vDSO routines is also no longer necessary for ELFv2.
2013-12-04 07:41:38 -06:00
Ulrich Weigand
d31beafa8e PowerPC64 ELFv2 ABI 1/6: Code refactoring
This is the first patch to support the new ELFv2 ABI in glibc.

As preparation, this patch simply refactors some of the powerpc64 assembler
code to move all code related to creating function descriptors (.opd section)
or using function descriptors (function pointer call) into a central place
in sysdep.h.

Note that most locations creating .opd entries were already using macros
in sysdep.h, this patch simply extends this to the remaining places.

No relevant change in generated code expected.
2013-12-04 07:41:38 -06:00
Ulrich Weigand
5162e7dd96 PowerPC64: Fix incorrect CFI in *context routines
The context established by "makecontext" has a link register pointing
back to an error path within the makecontext routine.  This is currently
covered by the CFI FDE for makecontext itself, which is simply wrong
for the stack frame *inside* the context.  When trying to unwind (e.g.
doing a backtrace) in a routine inside a context created by makecontext,
this can lead to uninitialized stack slots being accessed, causing the
unwinder to crash in the worst case.

Similarly, during parts of the "setcontext" routine, when the stack
pointer has already been switched to point to the new context, the
address range is still covered by the CFI FDE for setcontext.  When
trying to unwind in that situation (e.g. backtrace from an async
signal handler for profiling), it is again possible that the unwinder
crashes.

Theses are all problems in existing code, but the changes in stack
frame layout appear to make the "worst case" much more likely in
the ELFv2 ABI context.  This causes regressions e.g. in the libgo
testsuite on ELFv2.

This patch fixes this by ending the makecontext/setcontext FDEs
before those problematic parts of the assembler, similar to what
is already done on other platforms.   This fixes the libgo
regression on ELFv2.
2013-12-04 07:41:37 -06:00
Ondřej Bílka
b20de2c3d9 Properly handle shm_open validation. Fixes bug 16274. 2013-12-03 20:16:33 +01:00
Joseph Myers
91a1f3fea0 Add powerpc-nofpu/e500 support functions for atomic compound assignment and FLT_ROUNDS. 2013-11-28 18:01:41 +00:00
Adhemerval Zanella
bd12ab55c0 PowerPC: Fix __fe_nomask_env missing symbol
This patch fix the missing symbol __fe_nomask_env from commit
41e8926aa4 for GLIBC_2.1.
2013-11-26 07:25:08 -06:00
Ondřej Bílka
d1d9eaf478 Use __glibc_reserved instead __unused. 2013-11-26 12:32:28 +01:00
Carlos O'Donell
a7624ed987 Fix typo in sys/ptrace.h.
The event code is PTRACE_EVENT_SECCOMP, not PTRAVE_EVENT_SECCOMP.
This patch fixes the V->C typo. There are no ABI issues since the
number remains the same for the code. Code using the old wrong
name will need to be updated.
2013-11-25 14:57:42 -05:00
Adhemerval Zanella
7ab44563a9 PowerPC: Fix __fe_mask_env export
Change SHLIB_COMPAT calls to GLIBC_2_19 for __fe_nomask_env symbol.
2013-11-13 12:58:56 -06:00
H.J. Lu
17c1d9f03e Set arch_minimum_kernel to 3.4.0 for x32
x32 ABI support was added in Linux kernel 3.4.0.
2013-11-13 05:43:58 -08:00
Adhemerval Zanella
7a2ad8cf39 PowerPC: Fix __fe_mask_env export
This patch does not export __fe_mask_env anymore, only providing a
compatibility symbol. It fixes BZ#14143.
2013-11-13 06:45:19 -06:00
Adhemerval Zanella
76a9b99861 PowerPC: Fix vDSO missing ODP entries
This patch fixes the vDSO symbol used directed in IFUNC resolver where
they do not have an associated ODP entry leading to undefined behavior
in some cases. It adds an artificial OPD static entry to such cases
and set its TOC to non 0 to avoid triggering lazy resolutions.
2013-11-08 05:04:25 -06:00
Ondřej Bílka
5d30d85329 Restrict shm_open and shm_unlink to SHMDIR. Fixes bugs 14752 and 15763. 2013-10-31 13:59:01 +01:00
Mike Frysinger
cb8a6dbd17 rename configure.in to configure.ac
Autoconf has been deprecating configure.in for quite a long time.
Rename all our configure.in and preconfigure.in files to .ac.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-10-30 17:32:08 +10:00
Joseph Myers
3c8325fb47 Add e500 port. 2013-10-18 21:04:22 +00:00
Joseph Myers
29d73d867e Move powerpc ports pieces to libc. 2013-10-04 16:02:33 +00:00
Joseph Myers
e246b34759 e500 port: adjust sysdeps/unix/sysv/linux/configure.in case. 2013-10-04 15:57:50 +00:00
Joseph Myers
cd78f7e767 e500 port: getcontext / setcontext / swapcontext. 2013-10-04 15:55:15 +00:00
Alan Modra
f7c399cff5 PowerPC SIGSTKSZ
http://sourceware.org/ml/libc-alpha/2013-08/msg00093.html

This copies the sparc version of sigstack.h, which gives powerpc
 #define MINSIGSTKSZ     4096
 #define SIGSTKSZ        16384

Before the VSX changes, struct rt_sigframe size was 1920 plus 128 for
__SIGNAL_FRAMESIZE giving ppc64 exactly the default MINSIGSTKSZ of
2048.

After VSX, ucontext increased by 256 bytes.  Oops, we're over
MINSIGSTKSZ, so powerpc has been using the wrong value for quite a
while.  Add another ucontext for TM and rt_sigframe is now at 3872,
giving actual MINSIGSTKSZ of 4000.

The glibc testcase that I was looking at was tst-cancel21, which
allocates 2*SIGSTKSZ (not because the test is trying to be
conservative, but because the test actually has nested signal stack
frames).  We blew the allocation by 48 bytes when using current
mainline gcc to compile glibc (le ppc64).

The required stack depth in _dl_lookup_symbol_x from the top of the
next signal frame was 10944 bytes.  I guess you'd want to add 288 to
that, implying an actual SIGSTKSZ of 11232.

	* sysdeps/unix/sysv/linux/powerpc/bits/sigstack.h: New file.
2013-10-04 10:39:11 +09:30
Alan Modra
0b2c2ace36 PowerPC makecontext
http://sourceware.org/ml/libc-alpha/2013-08/msg00092.html

Use conditional form of branch and link to avoid destroying the cpu
link stack used to predict blr return addresses.

	* sysdeps/unix/sysv/linux/powerpc/powerpc32/makecontext.S: Use
	conditional form of branch and link when obtaining pc.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/makecontext.S: Likewise.
2013-10-04 10:38:59 +09:30
Alan Modra
02f04a6c7f PowerPC LE _dl_hwcap access
http://sourceware.org/ml/libc-alpha/2013-08/msg00091.html

More LE support, correcting word accesses to _dl_hwcap.

	* sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext-common.S: Use
	HIWORD/LOWORD.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext-common.S: Ditto.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S: Ditto.
2013-10-04 10:38:46 +09:30
Mike Frysinger
47f28d0a66 tst-fanotify: fix style
Reported-by: Andreas Jaeger <aj@suse.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-09-28 23:53:50 -04:00
Andreas Schwab
ffdd31816a Add O_TMPFILE to <fcntl.h> 2013-09-11 11:52:46 +02:00