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14 Commits

Author SHA1 Message Date
H.J. Lu
9d7a3741c9 Add --enable-static-pie configure option to build static PIE [BZ #19574] 
Static PIE extends address space layout randomization to static
executables.  It provides additional security hardening benefits at
the cost of some memory and performance.

Dynamic linker, ld.so, is a standalone program which can be loaded at
any address.  This patch adds a configure option, --enable-static-pie,
to embed the part of ld.so in static executable to create static position
independent executable (static PIE).  A static PIE is similar to static
executable, but can be loaded at any address without help from a dynamic
linker.  When --enable-static-pie is used to configure glibc, libc.a is
built as PIE and all static executables, including tests, are built as
static PIE.  The resulting libc.a can be used together with GCC 8 or
above to build static PIE with the compiler option, -static-pie.  But
GCC 8 isn't required to build glibc with --enable-static-pie.  Only GCC
with PIE support is needed.  When an older GCC is used to build glibc
with --enable-static-pie, proper input files are passed to linker to
create static executables as static PIE, together with "-z text" to
prevent dynamic relocations in read-only segments, which are not allowed
in static PIE.

The following changes are made for static PIE:

1. Add a new function, _dl_relocate_static_pie, to:
   a. Get the run-time load address.
   b. Read the dynamic section.
   c. Perform dynamic relocations.
Dynamic linker also performs these steps.  But static PIE doesn't load
any shared objects.
2. Call _dl_relocate_static_pie at entrance of LIBC_START_MAIN in
libc.a.  crt1.o, which is used to create dynamic and non-PIE static
executables, is updated to include a dummy _dl_relocate_static_pie.
rcrt1.o is added to create static PIE, which will link in the real
_dl_relocate_static_pie.  grcrt1.o is also added to create static PIE
with -pg.  GCC 8 has been updated to support rcrt1.o and grcrt1.o for
static PIE.

Static PIE can work on all architectures which support PIE, provided:

1. Target must support accessing of local functions without dynamic
relocations, which is needed in start.S to call __libc_start_main with
function addresses of __libc_csu_init, __libc_csu_fini and main.  All
functions in static PIE are local functions.  If PIE start.S can't reach
main () defined in a shared object, the code sequence:

	pass address of local_main to __libc_start_main
	...

local_main:
	tail call to main via PLT

can be used.
2. start.S is updated to check PIC instead SHARED for PIC code path and
avoid dynamic relocation, when PIC is defined and SHARED isn't defined,
to support static PIE.
3. All assembly codes are updated check PIC instead SHARED for PIC code
path to avoid dynamic relocations in read-only sections.
4. All assembly codes are updated check SHARED instead PIC for static
symbol name.
5. elf_machine_load_address in dl-machine.h are updated to support static
PIE.
6. __brk works without TLS nor dynamic relocations in read-only section
so that it can be used by __libc_setup_tls to initializes TLS in static
PIE.

NB: When glibc is built with GCC defaulted to PIE, libc.a is compiled
with -fPIE, regardless if --enable-static-pie is used to configure glibc.
When glibc is configured with --enable-static-pie, libc.a is compiled
with -fPIE, regardless whether GCC defaults to PIE or not.  The same
libc.a can be used to build both static executable and static PIE.
There is no need for separate PIE copy of libc.a.

On x86-64, the normal static sln:

   text	   data	    bss	    dec	    hex	filename
 625425	   8284	   5456	 639165	  9c0bd	elf/sln

the static PIE sln:

   text	   data	    bss	    dec	    hex	filename
 657626	  20636	   5392	 683654	  a6e86	elf/sln

The code size is increased by 5% and the binary size is increased by 7%.

Linker requirements to build glibc with --enable-static-pie:

1. Linker supports --no-dynamic-linker to remove PT_INTERP segment from
static PIE.
2. Linker can create working static PIE.  The x86-64 linker needs the
fix for

https://sourceware.org/bugzilla/show_bug.cgi?id=21782

The i386 linker needs to be able to convert "movl main@GOT(%ebx), %eax"
to "leal main@GOTOFF(%ebx), %eax" if main is defined locally.

Binutils 2.29 or above are OK for i686 and x86-64.  But linker status for
other targets need to be verified.

3. Linker should resolve undefined weak symbols to 0 in static PIE:

https://sourceware.org/bugzilla/show_bug.cgi?id=22269

4. Many ELF backend linkers incorrectly check bfd_link_pic for TLS
relocations, which should check bfd_link_executable instead:

https://sourceware.org/bugzilla/show_bug.cgi?id=22263

Tested on aarch64, i686 and x86-64.

Using GCC 7 and binutils master branch, build-many-glibcs.py with
--enable-static-pie with all patches for static PIE applied have the
following build successes:

PASS: glibcs-aarch64_be-linux-gnu build
PASS: glibcs-aarch64-linux-gnu build
PASS: glibcs-armeb-linux-gnueabi-be8 build
PASS: glibcs-armeb-linux-gnueabi build
PASS: glibcs-armeb-linux-gnueabihf-be8 build
PASS: glibcs-armeb-linux-gnueabihf build
PASS: glibcs-arm-linux-gnueabi build
PASS: glibcs-arm-linux-gnueabihf build
PASS: glibcs-arm-linux-gnueabihf-v7a build
PASS: glibcs-arm-linux-gnueabihf-v7a-disable-multi-arch build
PASS: glibcs-m68k-linux-gnu build
PASS: glibcs-microblazeel-linux-gnu build
PASS: glibcs-microblaze-linux-gnu build
PASS: glibcs-mips64el-linux-gnu-n32 build
PASS: glibcs-mips64el-linux-gnu-n32-nan2008 build
PASS: glibcs-mips64el-linux-gnu-n32-nan2008-soft build
PASS: glibcs-mips64el-linux-gnu-n32-soft build
PASS: glibcs-mips64el-linux-gnu-n64 build
PASS: glibcs-mips64el-linux-gnu-n64-nan2008 build
PASS: glibcs-mips64el-linux-gnu-n64-nan2008-soft build
PASS: glibcs-mips64el-linux-gnu-n64-soft build
PASS: glibcs-mips64-linux-gnu-n32 build
PASS: glibcs-mips64-linux-gnu-n32-nan2008 build
PASS: glibcs-mips64-linux-gnu-n32-nan2008-soft build
PASS: glibcs-mips64-linux-gnu-n32-soft build
PASS: glibcs-mips64-linux-gnu-n64 build
PASS: glibcs-mips64-linux-gnu-n64-nan2008 build
PASS: glibcs-mips64-linux-gnu-n64-nan2008-soft build
PASS: glibcs-mips64-linux-gnu-n64-soft build
PASS: glibcs-mipsel-linux-gnu build
PASS: glibcs-mipsel-linux-gnu-nan2008 build
PASS: glibcs-mipsel-linux-gnu-nan2008-soft build
PASS: glibcs-mipsel-linux-gnu-soft build
PASS: glibcs-mips-linux-gnu build
PASS: glibcs-mips-linux-gnu-nan2008 build
PASS: glibcs-mips-linux-gnu-nan2008-soft build
PASS: glibcs-mips-linux-gnu-soft build
PASS: glibcs-nios2-linux-gnu build
PASS: glibcs-powerpc64le-linux-gnu build
PASS: glibcs-powerpc64-linux-gnu build
PASS: glibcs-tilegxbe-linux-gnu-32 build
PASS: glibcs-tilegxbe-linux-gnu build
PASS: glibcs-tilegx-linux-gnu-32 build
PASS: glibcs-tilegx-linux-gnu build
PASS: glibcs-tilepro-linux-gnu build

and the following build failures:

FAIL: glibcs-alpha-linux-gnu build

elf/sln is failed to link due to:

assertion fail bfd/elf64-alpha.c:4125

This is caused by linker bug and/or non-PIC code in PIE libc.a.

FAIL: glibcs-hppa-linux-gnu build

elf/sln is failed to link due to:

collect2: fatal error: ld terminated with signal 11 [Segmentation fault]

https://sourceware.org/bugzilla/show_bug.cgi?id=22537

FAIL: glibcs-ia64-linux-gnu build

elf/sln is failed to link due to:

collect2: fatal error: ld terminated with signal 11 [Segmentation fault]

FAIL: glibcs-powerpc-linux-gnu build
FAIL: glibcs-powerpc-linux-gnu-soft build
FAIL: glibcs-powerpc-linux-gnuspe build
FAIL: glibcs-powerpc-linux-gnuspe-e500v1 build

elf/sln is failed to link due to:

ld: read-only segment has dynamic relocations.

This is caused by linker bug and/or non-PIC code in PIE libc.a.  See:

https://sourceware.org/bugzilla/show_bug.cgi?id=22264

FAIL: glibcs-powerpc-linux-gnu-power4 build

elf/sln is failed to link due to:

findlocale.c:96:(.text+0x22c): @local call to ifunc memchr

This is caused by linker bug and/or non-PIC code in PIE libc.a.

FAIL: glibcs-s390-linux-gnu build

elf/sln is failed to link due to:

collect2: fatal error: ld terminated with signal 11 [Segmentation fault], core dumped

assertion fail bfd/elflink.c:14299

This is caused by linker bug and/or non-PIC code in PIE libc.a.

FAIL: glibcs-sh3eb-linux-gnu build
FAIL: glibcs-sh3-linux-gnu build
FAIL: glibcs-sh4eb-linux-gnu build
FAIL: glibcs-sh4eb-linux-gnu-soft build
FAIL: glibcs-sh4-linux-gnu build
FAIL: glibcs-sh4-linux-gnu-soft build

elf/sln is failed to link due to:

ld: read-only segment has dynamic relocations.

This is caused by linker bug and/or non-PIC code in PIE libc.a.  See:

https://sourceware.org/bugzilla/show_bug.cgi?id=22263

Also TLS code sequence in SH assembly syscalls in glibc doesn't match TLS
code sequence expected by ld:

https://sourceware.org/bugzilla/show_bug.cgi?id=22270

FAIL: glibcs-sparc64-linux-gnu build
FAIL: glibcs-sparcv9-linux-gnu build
FAIL: glibcs-tilegxbe-linux-gnu build
FAIL: glibcs-tilegxbe-linux-gnu-32 build
FAIL: glibcs-tilegx-linux-gnu build
FAIL: glibcs-tilegx-linux-gnu-32 build
FAIL: glibcs-tilepro-linux-gnu build

elf/sln is failed to link due to:

ld: read-only segment has dynamic relocations.

This is caused by linker bug and/or non-PIC code in PIE libc.a.  See:

https://sourceware.org/bugzilla/show_bug.cgi?id=22263

	[BZ #19574]
	* INSTALL: Regenerated.
	* Makeconfig (real-static-start-installed-name): New.
	(pic-default): Updated for --enable-static-pie.
	(pie-default): New for --enable-static-pie.
	(default-pie-ldflag): Likewise.
	(+link-static-before-libc): Replace $(DEFAULT-LDFLAGS-$(@F))
	with $(if $($(@F)-no-pie),$(no-pie-ldflag),$(default-pie-ldflag)).
	Replace $(static-start-installed-name) with
	$(real-static-start-installed-name).
	(+prectorT): Updated for --enable-static-pie.
	(+postctorT): Likewise.
	(CFLAGS-.o): Add $(pie-default).
	(CFLAGS-.op): Likewise.
	* NEWS: Mention --enable-static-pie.
	* config.h.in (ENABLE_STATIC_PIE): New.
	* configure.ac (--enable-static-pie): New configure option.
	(have-no-dynamic-linker): New LIBC_CONFIG_VAR.
	(have-static-pie): Likewise.
	Enable static PIE if linker supports --no-dynamic-linker.
	(ENABLE_STATIC_PIE): New AC_DEFINE.
	(enable-static-pie): New LIBC_CONFIG_VAR.
	* configure: Regenerated.
	* csu/Makefile (omit-deps): Add r$(start-installed-name) and
	gr$(start-installed-name) for --enable-static-pie.
	(extra-objs): Likewise.
	(install-lib): Likewise.
	(extra-objs): Add static-reloc.o and static-reloc.os
	($(objpfx)$(start-installed-name)): Also depend on
	$(objpfx)static-reloc.o.
	($(objpfx)r$(start-installed-name)): New.
	($(objpfx)g$(start-installed-name)): Also depend on
	$(objpfx)static-reloc.os.
	($(objpfx)gr$(start-installed-name)): New.
	* csu/libc-start.c (LIBC_START_MAIN): Call _dl_relocate_static_pie
	in libc.a.
	* csu/libc-tls.c (__libc_setup_tls): Add main_map->l_addr to
	initimage.
	* csu/static-reloc.c: New file.
	* elf/Makefile (routines): Add dl-reloc-static-pie.
	(elide-routines.os): Likewise.
	(DEFAULT-LDFLAGS-tst-tls1-static-non-pie): Removed.
	(tst-tls1-static-non-pie-no-pie): New.
	* elf/dl-reloc-static-pie.c: New file.
	* elf/dl-support.c (_dl_get_dl_main_map): New function.
	* elf/dynamic-link.h (ELF_DURING_STARTUP): Also check
	STATIC_PIE_BOOTSTRAP.
	* elf/get-dynamic-info.h (elf_get_dynamic_info): Likewise.
	* gmon/Makefile (tests): Add tst-gmon-static-pie.
	(tests-static): Likewise.
	(DEFAULT-LDFLAGS-tst-gmon-static): Removed.
	(tst-gmon-static-no-pie): New.
	(CFLAGS-tst-gmon-static-pie.c): Likewise.
	(CRT-tst-gmon-static-pie): Likewise.
	(tst-gmon-static-pie-ENV): Likewise.
	(tests-special): Likewise.
	($(objpfx)tst-gmon-static-pie.out): Likewise.
	(clean-tst-gmon-static-pie-data): Likewise.
	($(objpfx)tst-gmon-static-pie-gprof.out): Likewise.
	* gmon/tst-gmon-static-pie.c: New file.
	* manual/install.texi: Document --enable-static-pie.
	* sysdeps/generic/ldsodefs.h (_dl_relocate_static_pie): New.
	(_dl_get_dl_main_map): Likewise.
	* sysdeps/i386/configure.ac: Check if linker supports static PIE.
	* sysdeps/x86_64/configure.ac: Likewise.
	* sysdeps/i386/configure: Regenerated.
	* sysdeps/x86_64/configure: Likewise.
	* sysdeps/mips/Makefile (ASFLAGS-.o): Add $(pie-default).
	(ASFLAGS-.op): Likewise.
 2017-12-15 17:12:14 -08:00
Wilco Dijkstra
ca3a382ea3 Enable unwind info in libc-start.c and backtrace.c 
Add unwind info to __libc_start_main so that unwinding continues one
extra level to _start.  Similarly add unwind info to backtrace.
Given many targets require this, do this in a general way.

	* csu/Makefile: Add -funwind-tables to libc-start.c.
	* debug/Makefile: Add -funwind-tables to backtrace.c.
	* sysdeps/aarch64/Makefile: Remove CFLAGS-backtrace.c.
	* sysdeps/arm/Makefile: Likewise.
	* sysdeps/i386/Makefile: Likewise.
	* sysdeps/m68k/Makefile: Likewise.
	* sysdeps/mips/Makefile: Likewise.
	* sysdeps/nios2/Makefile: Likewise.
	* sysdeps/sh/Makefile: Likewise.
	* sysdeps/sparc/Makefile: Likewise.
 2017-09-19 15:07:58 +01:00
Florian Weimer
d9067fca40 Do not override objects in libc.a in other static libraries [BZ #20452] 
With this change, we no longer add sysdep.o and similar objects which
are present in libc.a to other static libraries.
 2016-08-17 14:57:01 +02:00
Aurelien Jarno
578d080544 mips: fix testsuite build for O32 FPXX ABI on pre-R2 CPU 
On MIPS when the toolchain is using the O32 FPXX ABI, the testsuite
fails to build for pre-R2 CPU.

It assumes that it is possible to use the -mfp64 option to build
tst-abi-fp64amod and tst-abi-fp64mod, while this requires a CPU which
supports the mfhc1 and mthc1 instructions, ie at least a R2 CPU:

  error: '-mgp32' and '-mfp64' can only be combined if the target
  supports the mfhc1 and mthc1 instructions

The same way it assumes that it is possible to use the -modd-spreg option
to build tst-abi-fpxxomod and tst-abi-fp64mod, while this requires at
least a R1 CPU:

  warning: the 'mips2' architecture does not support odd
  single-precision registers

This patches changes that by checking the usability of -mfp64 and
-modd-spreg options in configure, and disable those tests when they can
not be used.
 2015-12-09 19:03:46 +01:00
Matthew Fortune
0bd956720c Add support for MIPS O32 FPXX and .MIPS.abiflags 
* elf/elf.h (PT_MIPS_ABIFLAGS): Define.
	(Elf_MIPS_ABIFlags_v0): New structure.
	(EF_MIPS_FP64): Define.
	(MIPS_AFL_REG_NONE, MIPS_AFL_REG_32, MIPS_AFL_REG_64): Likewise.
	(MIPS_AFL_REG_128, MIPS_AFL_ASE_DSP, MIPS_AFL_ASE_DSP64): Likewise.
	(MIPS_AFL_ASE_DSPR2, MIPS_AFL_ASE_EVA, MIPS_AFL_ASE_MCU): Likewise.
	(MIPS_AFL_ASE_MDMX, MIPS_AFL_ASE_MIPS3D, MIPS_AFL_ASE_MT): Likewise.
	(MIPS_AFL_ASE_SMARTMIPS, MIPS_AFL_ASE_VIRT): Likewise.
	(MIPS_AFL_ASE_VIRT64, MIPS_AFL_ASE_MSA, MIPS_AFL_ASE_MSA64): Likewise.
	(MIPS_AFL_ASE_MIPS16, MIPS_AFL_ASE_MICROMIPS): Likewise.
	(MIPS_AFL_ASE_XPA, MIPS_AFL_EXT_XLR, MIPS_AFL_EXT_OCTEON2): Likewise.
	(MIPS_AFL_EXT_OCTEONP, MIPS_AFL_EXT_LOONGSON_3A): Likewise.
	(MIPS_AFL_EXT_OCTEON, MIPS_AFL_EXT_5900, MIPS_AFL_EXT_4010): Likewise.
	(MIPS_AFL_EXT_4100, MIPS_AFL_EXT_3900, MIPS_AFL_EXT_10000): Likewise.
	(MIPS_AFL_EXT_SB1, MIPS_AFL_EXT_4111, MIPS_AFL_EXT_4120): Likewise.
	(MIPS_AFL_EXT_5400, MIPS_AFL_EXT_5500): Likewise.
	(MIPS_AFL_EXT_LOONGSON_2E, MIPS_AFL_EXT_LOONGSON_2F): Likewise.
	(Val_GNU_MIPS_ABI_FP_ANY, Val_GNU_MIPS_ABI_FP_DOUBLE): New enum values.
	(Val_GNU_MIPS_ABI_FP_SINGLE, Val_GNU_MIPS_ABI_FP_SOFT): Likewise.
	(Val_GNU_MIPS_ABI_FP_OLD_64, Val_GNU_MIPS_ABI_FP_XX): Likewise.
	(Val_GNU_MIPS_ABI_FP_64, Val_GNU_MIPS_ABI_FP_64A): Likewise.
	(Val_GNU_MIPS_ABI_FP_MAX): Likewise.
	* sysdeps/mips/Makefile [subdir=elf]: Add tst-abi-interlink,
	tst-mode-switch-1, tst-mode-switch-2, tst-mode-switch-3 tests.
	* sysdeps/mips/bits/linkmap.h (struct link_map_machine): Add fpmode
	field.
	* sysdeps/mips/dl-machine.h (elf_machine_matches_host): Reject
	EF_MIPS_FP64.
	* sysdeps/mips/dl-machine-reject-phdr.h: New file.
	* sysdeps/mips/tst-abi-fp32mod.c: Likewise.
	* sysdeps/mips/tst-abi-fpxxmod.c: Likewise.
	* sysdeps/mips/tst-abi-fpxxomod.c: Likewise.
	* sysdeps/mips/tst-abi-fp64mod.c: Likewise.
	* sysdeps/mips/tst-abi-fp64amod.c: Likewise.
	* sysdeps/mips/tst-abi-interlink.c: Likewise.
	* sysdeps/mips/tst-mode-switch-1.c: Likewise.
	* sysdeps/mips/tst-mode-switch-2.c: Likewise.
	* sysdeps/mips/tst-mode-switch-3.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/configure.ac (o32-fpabi): Define to
	record the current FP ABI extension.
	(mips-mode-switch): Define to show if kernel headers support mode
	switching.
	* sysdeps/unix/sysv/linux/mips/configure: Regenerate.
	* sysdeps/unix/sysv/linux/mips/ldsodefs.h: Increase maximum
	supported SYSV ABI version to 3.
	* sysdeps/unix/sysv/linux/mips/libc-abis: Add new MIPS_O32_FP64
	feature.
 2014-12-31 21:09:21 +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
Roland McGrath
0d5cb2c74f [BZ #2329] 
2006-02-20  Roland McGrath  <roland@redhat.com>
	* sysdeps/mips: Directory removed, saved in ports repository.
	* sysdeps/unix/mips: Likewise.
	* sysdeps/unix/sysv/linux/mips: Likewise.
	* sysdeps/mach/mips: Likewise.
	* sysdeps/mach/hurd/mips: Likewise.
	* shlib-versions: Remove mips matches, now in ports fragment.
	* sysdeps/unix/sysv/linux/kernel-features.h: Likewise.
	* configure.in (machine): Likewise.
	* configure: Regenerated.
2006-02-15  Thomas Schwinge  <tschwinge@gnu.org>

	[BZ #2329]
	* include/unistd.h (__getresuid, __getresgid, __setresuid)
	(__setresgid): Fix argument name order in prototypes.
	* posix/unistd.h (getresuid, getresgid, setresuid, setresgid):
	Likewise.
	* posix/getresuid.c (__getresuid): Fix argument order in definition.
	* posix/getresgid.c (__getresgid): Likewise.
	* posix/setresuid.c (__setresuid): Likewise.
	* posix/setresgid.c (__setresgid): Likewise.
	* sysdeps/mach/hurd/getresuid.c (__getresuid): Likewise.
	* sysdeps/mach/hurd/getresgid.c (__getresgid): Likewise.
	* sysdeps/mach/hurd/setresuid.c (__setresuid): Likewise.
	* sysdeps/mach/hurd/setresgid.c (__setresgid): Likewise.
	Reported by Samuel Thibault <samuel.thibault@ens-lyon.org>.
 2006-02-21 02:30:10 +00:00
Ulrich Drepper
a334319f65 (CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4. 2004-12-22 20:10:10 +00:00
Jakub Jelinek
0ecb606cb6 2.5-18.1 2007-07-12 18:26:36 +00:00
Andreas Jaeger
97a0830c65 [BZ #562] 
2004-12-20  Jakub Jelinek  <jakub@redhat.com>, 
    Jim Gifford  <giffordj@linkline.com>
	[BZ #562]
	* sysdeps/mips/Makefile (librt-sysdep_routines): Add.
	* sysdeps/unix/mips/rt-sysdep.S: New file.
 2004-12-20 08:34:03 +00:00
Andreas Jaeger
f260ae2de4 [$(subdir) = misc]: Use sysdep_headers instead of headers for make dist. 2000-09-06 08:21:55 +00:00
Ulrich Drepper
118bad87bd Update. 
1998-12-31  Ulrich Drepper  <drepper@cygnus.com>

	* iconvdata/Makefile: Use rpath $ORIGIN for modules which use any of
	the conversion libraries.

	* include/features.h: Mention latest extensions in _POSIX_C_SOURCE
	description.

	* libio/genops.c (list_all_lock): New variable.
	(_IO_un_link, _IO_link_in): Acquire lock before modifying _IO_list_all.
	[PR libc/911].

	* sysdeps/i386/i686/strtok.s: Add missing cld.

	* sysdeps/i386/i686/mempcpy.S: New file.

1998-12-30  Geoff Keating  <geoffk@ozemail.com.au>

	Suppress parentheses warnings:
	* sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c
	(DL_FIND_ARG_COMPONENTS): here,
	* sysdeps/powerpc/dl-machine.c: here,
	* sysdeps/powerpc/fclrexcpt.c (feclearexcept): here,
	* sysdeps/powerpc/fesetround.c (fesetround): here,
	* sysdeps/powerpc/feupdateenv.c (feupdateenv): here,
	* sysdeps/powerpc/fraiseexcpt.c (feraiseexcept): here,
	* sysdeps/powerpc/fsetexcptflg.c (fesetexceptflag): here,
	* sysdeps/powerpc/s_rint.c (__rint): here,
	* sysdeps/powerpc/s_rintf.c (__rintf): here,
	* sysdeps/powerpc/w_sqrt.c (__sqrt): here,
	* sysdeps/powerpc/w_sqrtf.c (__sqrtf): and here.

1998-12-30  Geoff Keating  <geoffk@ozemail.com.au>

	* wcsmbs/wcstold.c [__NO_LONG_DOUBLE_MATH]: Include wchar.h.
	* wcsmbs/wcstold_l.c [__NO_LONG_DOUBLE_MATH]: Likewise.  Also define
	appropropriate prototypes, correct procedure names.

1998-12-30  Geoff Keating  <geoffk@ozemail.com.au>

	* sysdeps/generic/crypt-entry.c: Prototype __crypt_r, suppress
	warning.
	(__crypt_r): Add __restrict.
	* sysdeps/generic/crypt.h: Remove internal routine.  Add __restrict.

1998-12-31  Ulrich Drepper  <drepper@cygnus.com>

	* stdlib/longlong.h: Add missing #else in SPARC definitions.

1998-12-30  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	Patches by Ralf Baechle <ralf@gnu.org>:
	* sysdeps/unix/sysv/linux/mips/sgidefs.h: Removed.
	* sysdeps/unix/sysv/linux/mips/sys/asm.h:  Removed.
	* sysdeps/unix/sysv/linux/mips/sys/regdef.h:  Removed.
	* sysdeps/unix/sysv/linux/mips/sys/fpregdef.h:  Removed.
	* sysdeps/unix/sysv/linux/mips/regdef.h:  Removed.
	* sysdeps/unix/sysv/linux/mips/fpregdef.h: Removed.

	* sysdeps/unix/sysv/linux/mips/Makefile: Remove delete files.
	* sysdeps/unix/sysv/linux/mips/Dist: Remove deleted files.

	* sysdeps/mips/sys/fpregdef.h: New files, enhanced versions of deleted
	linux specific files.
	* sysdeps/mips/sys/asm.h: Likewise.
	* sysdeps/mips/sgidefs.h: Likewise.
	* sysdeps/mips/fpregdef.h: Likewise.
	* sysdeps/mips/regdef.h: Likewise.

	* sysdeps/mips/Makefile: Add new headers.
	* sysdeps/mips/Dist: Add new files.

	* sysdeps/mips/fpu_control.h (_FPU_DEFAULT): Change value.

1998-12-28  Andreas Schwab  <schwab@issan.cs.uni-dortmund.de>

	* iconvdata/Makefile: Remove variable assignments and rules that
	are now auto-generated.  Include $(objpfx)iconv-rules instead.
	Btw, that removes a few typos.
	(charmaps): New variable.
	($(objpfx)iconv-rules): New target.
	(gen-8bit-modules): Renamed from sed-generated-headers, remove .h
	suffixes.
	(gen-8bit-gap-modules): Renamed from awk-generated-headers, remove
	.h suffixes.
	(gen-special-modules): New variable.
	(generated-modules): New variable.
	(headers): Use it.
	(before-compile): Likewise.
	(generated): Likewise, and add iconv-rules.
	* iconvdata/euc-cn.c: Renamed from euccn.c.
	* iconvdata/euc-jp.c: Renamed from eucjp.c.
	* iconvdata/euc-kr.c: Renamed from euckr.c.
	* iconvdata/euc-tw.c: Renamed from euctw.c.
	* iconvdata/iso_6937.c: Renamed from iso6937.c.
	* iconvdata/iso_6937-2.c: Renamed from iso6937-2.c.
	* iconvdata/t.61.c: Renamed from t61.c.
	* iconvdata/Makefile (distribute): Adjusted for those renames.
	Remove $(objpfx) from names.

1998-12-28  Andreas Schwab  <schwab@issan.cs.uni-dortmund.de>

	* sysdeps/generic/hp-timing.h: Fix comment.
	* sysdeps/generic/dl-hash.h: Likewise.
	* sysdeps/i386/i686/hp-timing.h: Likewise.

1998-12-28  Andreas Schwab  <schwab@issan.cs.uni-dortmund.de>

	* posix/fnmatch.c (fnmatch): Always pass unsigned char values to
	FOLD macro.

1998-12-28  Andreas Schwab  <schwab@issan.cs.uni-dortmund.de>

	* nss/db-Makefile ($(VAR_DB)/shadow.db): Fix last change.

1998-12-29  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* sysdeps/unix/sysv/linux/mips/bits/sigaction.h: Sync with
	current Linux 2.1.132 kernel sources.

1998-12-28  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	Patches by Ralf Baechle <ralf@gnu.org> for Linux/MIPS:
	* sysdeps/unix/sysv/linux/mips/syscalls.list: Add ipc, change
	pread/pwrite and llseek calls.

	* sysdeps/unix/sysv/linux/mips/sysdep.S: New file.

1998-12-29  Wolfram Gloger  <wmglo@dent.med.uni-muenchen.de>

	* malloc/thread-m.h [_LIBC] : Fix for NO_THREADS case.
 1998-12-31 18:19:19 +00:00
Ulrich Drepper
6d4752d8b9 Update. 
1998-11-27  Philip Blundell  <pb@nexus.co.uk>

	Fixes to allow compilation with static NSS:
	* nss/Makefile: Make explicit the dependency of getent on
	libnss_files.a.
	[build_static_nss]: Define $(otherlibs) appropriately.
	* nss/Depend: Add a dependency on `resolv'.

1998-11-27  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	Partial support for MIPS ISO C 9x exception handling:
	* sysdeps/mips/fclrexcpt.c: New file.
	* sysdeps/mips/ftestexcept.c: New file.
	* sysdeps/mips/fgetexcptflg.c: New file.
	* sysdeps/mips/fesetround.c: New file.
	* sysdeps/mips/fegetround.c: New file.
	* sysdeps/mips/fegetenv.c: New file.
	* sysdeps/mips/fesetenv.c: New file.
	* sysdeps/mips/feupdateenv.c: Likewise.
	* sysdeps/mips/bits/fenv.h: New file.

1998-11-28  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* sysdeps/unix/sysv/linux/mips/bits/signum.h: Remove inclusion of
	<asm/signal.h> and add needed symbols from <asm/signal.h>; bring
	in sync with linux specific version.

	Patches by Ralf Baechle <ralf@uni-koblenz.de> for mips-linux:

	* sysdeps/unix/mips/sysdep.S: Define _errno as weak_alias, rewrite
	errno declaration.

	* sysdeps/unix/sysv/linux/mips/ustat.c: Use INLINE_SYSCALL instead
	of calling __syscall_*.
	* sysdeps/unix/sysv/linux/mips/xmknod.c: Likewise.

	* sysdeps/unix/sysv/linux/mips/syscalls.list: Update entries.

	* sysdeps/unix/sysv/linux/mips/sys/syscall.h: Add missing SYS_*
	constants, correct values according to Linux 2.1.130.

	* sysdeps/unix/sysv/linux/mips/pwrite.c: New file.
	* sysdeps/unix/sysv/linux/mips/pwrite64.c: New file.
	* sysdeps/unix/sysv/linux/mips/pread.c: New file.
	* sysdeps/unix/sysv/linux/mips/pread64.c: New file.

	* sysdeps/mips/Makefile (sysdep_routines): Use += instead of a
	:=.

	* sysdeps/unix/sysv/linux/mips/bits/ipc.h: Remove ipc_kludge.

	* sysdeps/unix/sysv/linux/mips/xstatconv.c: New file.

	* sysdeps/unix/sysv/linux/mips/xstat.c: Removed.

	* sysdeps/unix/sysv/linux/mips/sys/ucontext.h: New file.

	* sysdeps/unix/sysv/linux/mips/kernel_termios.h: Add copyright
	message, change name of include protection, remove inclusion of
	<bits/termios.h>.

	* sysdeps/unix/sysv/linux/mips/kernel_sigaction.h
	(old_kernel_sigaction): Define.
	(struct kernel_sigaction): Rename sa_handler to k_sa_handler.

	* sysdeps/unix/sysv/linux/mips/bits/time.h: Removed, we can use
	the general linux version.
	* sysdeps/unix/sysv/linux/mips/bits/stat.h (_STAT_VER_KERNEL): Added.

	* sysdeps/unix/sysv/linux/mips/bits/socket.h: Update file.

1998-09-03  Philip Blundell  <pb@nexus.co.uk>

	* sysdeps/arm/bits/endian.h (__FLOAT_WORD_ORDER): Define to big
	endian.
	* math/math_private.h: Use __FLOAT_WORD_ORDER rather than
	BYTE_ORDER.
	* string/endian.h: If __FLOAT_WORD_ORDER wasn't defined by
	<bits/endian.h>, make it the same as __BYTE_ORDER.

1998-11-26  Andreas Schwab  <schwab@issan.cs.uni-dortmund.de>

	* Makeconfig ($(common-objpfx)sysd-dirs): Use automatic variables
	if possible.
	($(common-objpfx)sysd-sorted): Likewise.

1998-11-27  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* sysdeps/libm-ieee754/e_log.c (__ieee754_log): Add declaration of
	local variables t1,t2 only if needed.

	* sysdeps/libm-ieee754/s_truncf.c (__truncf): Likewise.
	* sysdeps/libm-ieee754/s_trunc.c (__trunc): Likewise.

	* sysdeps/mips/mul_1.S (Loop): Add closing comment to avoid
	warning.

1998-11-27  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* math/math.h: Add brace to correct #if expression.

1998-11-26  Philip Blundell  <philb@gnu.org>

	Undo change of 1998-11-12:
	* sysdeps/unix/sysv/linux/netlink/netlink.h: Deleted.
	* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Remove
	netlink/netlink.h.
	* sysdeps/unix/sysv/linux/Dist: Likewise.

1998-11-22  Thorsten Kukuk  <kukuk@vt.uni-paderborn.de>

	* nis/nis_print.c (nis_print_entry): Changes to match Solaris output.

1998-11-26  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* sysdeps/generic/pselect.c (__pselect): Change interface,
	set/restore sigmask.

	* misc/sys/select.h: Change declaration according to Stevens' Unix
	Network Programming.
	* include/sys/select.h (__pselect): Likewise.
	Reported by <bwelling@anomaly.munge.com> [PR libc/872].

	* include/fpu_control.h: New file, contains __setfpucw
	declaration.

	* sysdeps/generic/fpu_control.h: Remove __setfpucw declaration,
	it's an internal symbol.
	* sysdeps/alpha/fpu/fpu_control.h: Likewise.
	* sysdeps/arm/fpu/fpu_control.h: Likewise.
	* sysdeps/i386/fpu_control.h: Likewise.
	* sysdeps/m68k/fpu_control.h: Likewise.
	* sysdeps/powerpc/fpu_control.h: Likewise.
	* sysdeps/sparc/sparc32/fpu/fpu_control.h: Likewise.
	* sysdeps/sparc/sparc64/fpu/fpu_control.h: Likewise.
 1998-11-28 21:06:13 +00:00
Roland McGrath
28f540f45b initial import 1995-02-18 01:27:10 +00:00