Commit Graph

4481 Commits

Author SHA1 Message Date
H.J. Lu e2e4f56056 Add _dl_x86_cpu_features to rtld_global
This patch adds _dl_x86_cpu_features to rtld_global in x86 ld.so
and initializes it early before __libc_start_main is called so that
cpu_features is always available when it is used and we can avoid
calling __init_cpu_features in IFUNC selectors.

	* sysdeps/i386/dl-machine.h: Include <cpu-features.c>.
	(dl_platform_init): Call init_cpu_features.
	* sysdeps/i386/dl-procinfo.c (_dl_x86_cpu_features): New.
	* sysdeps/i386/i686/cacheinfo.c
	(DISABLE_PREFERRED_MEMORY_INSTRUCTION): Removed.
	* sysdeps/i386/i686/multiarch/Makefile (aux): Remove init-arch.
	* sysdeps/i386/i686/multiarch/Versions: Removed.
	* sysdeps/i386/i686/multiarch/ifunc-defines.sym (KIND_OFFSET):
	Removed.
	* sysdeps/i386/ldsodefs.h: Include <cpu-features.h>.
	* sysdeps/unix/sysv/linux/x86/Makefile
	(libpthread-sysdep_routines): Remove init-arch.
	* sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c: Include
	<sysdeps/x86_64/dl-procinfo.c> instead of
	sysdeps/generic/dl-procinfo.c>.
	* sysdeps/x86/Makefile [$(subdir) == csu] (gen-as-const-headers):
	Add cpu-features-offsets.sym and rtld-global-offsets.sym.
	[$(subdir) == elf] (sysdep-dl-routines): Add dl-get-cpu-features.
	[$(subdir) == elf] (tests): Add tst-get-cpu-features.
	[$(subdir) == elf] (tests-static): Add
	tst-get-cpu-features-static.
	* sysdeps/x86/Versions: New file.
	* sysdeps/x86/cpu-features-offsets.sym: Likewise.
	* sysdeps/x86/cpu-features.c: Likewise.
	* sysdeps/x86/cpu-features.h: Likewise.
	* sysdeps/x86/dl-get-cpu-features.c: Likewise.
	* sysdeps/x86/libc-start.c: Likewise.
	* sysdeps/x86/rtld-global-offsets.sym: Likewise.
	* sysdeps/x86/tst-get-cpu-features-static.c: Likewise.
	* sysdeps/x86/tst-get-cpu-features.c: Likewise.
	* sysdeps/x86_64/dl-procinfo.c: Likewise.
	* sysdeps/x86_64/cacheinfo.c (__cpuid_count): Removed.
	Assume USE_MULTIARCH is defined and don't check it.
	(is_intel): Replace __cpu_features with GLRO(dl_x86_cpu_features).
	(is_amd): Likewise.
	(max_cpuid): Likewise.
	(intel_check_word): Likewise.
	(__cache_sysconf): Don't call __init_cpu_features.
	(__x86_preferred_memory_instruction): Removed.
	(init_cacheinfo): Don't call __init_cpu_features. Replace
	__cpu_features with GLRO(dl_x86_cpu_features).
	* sysdeps/x86_64/dl-machine.h: <cpu-features.c>.
	(dl_platform_init): Call init_cpu_features.
	* sysdeps/x86_64/ldsodefs.h: Include <cpu-features.h>.
	* sysdeps/x86_64/multiarch/Makefile (aux): Remove init-arch.
	* sysdeps/x86_64/multiarch/Versions: Removed.
	* sysdeps/x86_64/multiarch/cacheinfo.c: Likewise.
	* sysdeps/x86_64/multiarch/init-arch.c: Likewise.
	* sysdeps/x86_64/multiarch/ifunc-defines.sym (KIND_OFFSET):
	Removed.
	* sysdeps/x86_64/multiarch/init-arch.h: Rewrite.
2015-08-13 03:41:22 -07:00
Andreas Schwab dc8a7ff24d Remove unused definition of __openat(64)_nocancel 2015-08-11 09:37:38 +02:00
Andreas Schwab eb32b0d403 Readd O_LARGEFILE flag for openat64 (bug 18781) 2015-08-10 18:10:19 +02:00
Mike Frysinger ef086ef8ba hppa: put custom madvise defines behind __USE_MISC
No other arch exports these defines, and having them in the default
namespace causes conformance header tests to fail.  Put them behind
the __USE_MISC define as that is what other arches seem to use.
2015-08-08 23:46:44 -04:00
John David Anglin 04ece7d2de hppa: Fix miscompilation of sched_setaffinity() [BZ #18480]
The attached change fixes the miscompilation of sched_setaffinity() on
hppa.  This is an old problem that was fixed on other architectures using
a similar approach to the attached change.  See:
https://sourceware.org/ml/libc-hacker/2004-04/msg00016.html

Build tested on trunk.  Patch has been applied to debian glibc for some time.
2015-08-08 22:56:01 -04:00
John David Anglin 74bc0c3a16 hppa: Fix reload error with atomic code [BZ #18787]
As noted in the bug, the asm operands need to be copied to register
variables to avoid operand reloads in the principal asm of the macro.
See the arm implementation for reference.  Otherwise we get:
../sysdeps/unix/sysv/linux/hppa/bits/atomic.h:68:6: error:
	can't find a register in class 'R1_REGS' while reloading 'asm'

Build tested on trunk with gcc-4.8.  Similar patch has been tested
with 2.19 on Debian hppa-unknown-linux-gnu.
2015-08-08 01:11:44 -04:00
Mike Frysinger 5d5de49c3c microblaze: include unix/sysdep.h
The semi-recent SYSCALL_CANCEL inclusion broke microblaze due to the
sysdep.h header not including the unix/sysdep.h header.  Include it
here like all other ports.
2015-08-07 23:39:42 -04:00
Andreas Schwab bb1d31d06e Properly terminate FDE in makecontext for m68k (bug 18635) 2015-08-05 23:35:28 +02:00
H.J. Lu b4425b95ad Align stack to 16 bytes when calling __gettimeofday
Subtract stack by 24 bytes instead of 16 bytes so that stack is aligned
to 16 bytes when calling __gettimeofday.

	[BZ #18661]
	* sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
	(__lll_timedwait_tid): Align stack to 16 bytes when calling
	__gettimeofday.
2015-08-05 08:36:18 -07:00
H.J. Lu 8e1f346462 Align stack to 16 bytes when calling __setcontext
Don't use pop to restore %rdi so that stack is aligned to 16 bytes
when calling __setcontext.

	[BZ #18661]
	* sysdeps/unix/sysv/linux/x86_64/__start_context.S
	(__start_context): Don't use pop to restore %rdi so that stack
	is aligned to 16 bytes when calling __setcontext.
2015-08-05 08:36:12 -07:00
Adhemerval Zanella 2aa6c8af26 arm: Assembly implementation cleanup
This patch removes arm assembly implementation of mmap and mmap64.
The new implementation used is the wordsize-32 generic linux one.

Tested on armhf.
2015-08-05 10:41:03 -03:00
Mike Frysinger 182d6096fe mmap64: fix undef warnings
The only target that defines this is m68k, so move the existing fallback
define up to avoid warnings on other systems.
2015-08-05 04:38:56 -04:00
Andreas Schwab bbab82c25d Properly terminate FDE in makecontext for ix86 (bug 18635) 2015-08-04 17:46:56 +02:00
Torvald Riegel 87ab9d55f7 hppa: Remove custom lowlevellock.h.
This untested patch removes the custom lowlevellock.h on hppa.  It seems
to contain an implementation equivalent to the generic lowlevellock.h.
2015-07-30 03:37:27 -04:00
Mike Frysinger 827e01851f hppa: sigaction.h: change sa_flags to an int
This fixes the conform test for the sigaction.h header and makes it match
all the other arches.
2015-07-29 23:14:03 -04:00
Mike Frysinger 979900af98 hppa: fix sysdep.h header setup
The semi-recent SYSCALL_CANCEL inclusion broke hppa due to the sysdep.h
headers not including the unix/sysdep.h headers.  Rework the includes so
we match the other ports:
* hppa/sysdep.h:
	- Do not include sys/syscall.h as the unix sysdep.h headers do it.
	- Do not include config.h as libc-symbols.h does it, and it has no
	#ifdef multiple-include protection, and it breaks when some files
	do things like #undef __OPTIMIZE__.
* sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h:
	- Drop the generic/sysdep.h as the unix sysdep.h headers include it.
* sysdeps/unix/sysv/linux/hppa/sysdep.h:
	- Change to the unix & core hppa sysdep header stacks.
	- Undef a few defines that the core headers already set up for us.
2015-07-29 23:09:16 -04:00
Mike Frysinger a822b0187a hppa: rewrite INLINE_SYSCALL
The semi-recent SYSCALL_CANCEL macro imposes a slight nuance on the
implementation of INLINE_SYSCALL: the nr argument cannot be expanded
directly but must be passed on to another macro which may expand it.
Most arches don't notice because INLINE_SYSCALL is defined in terms
of INTERNAL_SYSCALL which has the additional layer of expansion, but
on hppa, it was attempting to expand it directly.  That causes build
errors like so:
../sysdeps/unix/sysv/linux/sigsuspend.c: In function '__sigsuspend':
../sysdeps/unix/sysv/linux/sigsuspend.c:31:62: error:
	implicit declaration of function 'LOAD_ARGS___SYSCALL_NARGS'
../sysdeps/unix/sysv/linux/sigsuspend.c:31:304: error:
	called object 'LOAD_ARGS___SYSCALL_NARGS(set, 8)' is not a function

So rewrite hppa's INLINE_SYSCALL to use INTERNAL_SYSCALL like other
arches do.  This is also a nice clean up as the two macros had quite
a bit of duplicated logic.
2015-07-29 23:08:15 -04:00
H.J. Lu 9637d8a253 Extend local PLT reference check
On x86, linker in binutils 2.26 and newer consolidates R_*_JUMP_SLOT with
R_*_GLOB_DAT relocation against the same symbol.  This patch extends
local PLT reference check to support alternate relocations.

	[BZ #18078]
	* scripts/check-localplt.awk: Support alternate relocations.
	* scripts/localplt.awk: Also check relocations in DT_RELA/DT_REL
	sections.
	* sysdeps/unix/sysv/linux/i386/localplt.data: Mark free and
	malloc entries with + REL R_386_GLOB_DAT.
	* sysdeps/x86_64/localplt.data: New file.
2015-07-29 11:58:06 -07:00
Mike Frysinger 95d8f022bf ia64: drop __tls_get_addr from expected ld.so plt usage
This file was updated with an educated guess as to the symbols needed,
but on ia64, we don't have __tls_get_addr calls, so drop it from the
list.
2015-07-28 05:30:14 -04:00
Mike Frysinger 18855eca32 ia64: clean up old kernel headers cruft
This define made more sense in the pre-sanitized kernel headers days,
but since we require kernel versions that are sanitized, we don't need
this hack anymore.
2015-07-28 02:29:30 -04:00
Chung-Lin Tang 3f96834346 Fix order of arguments to rt_sigprocmask syscall when setting the signal mask
in setcontext/swapcontext.
2015-07-24 23:19:50 -07:00
Roland McGrath b301e68e4b Make sysdeps/posix bring in login subdir. 2015-07-23 17:04:22 -07:00
Mike Frysinger 992f71ddd3 ia64: sigaction.h: fix sa_flags ordering
Since ia64 is little endian, sa_flags has to come before the padding
when splitting it from 64bits to 32bits.

Reported-by: Joseph Myers <joseph@codesourcery.com>
2015-07-23 03:28:13 -04:00
Mike Frysinger 9c9184b449 ia64: msg.h: fix msg_qnum/msg_qbytes types
These two fields have dedicated types, so change the ia64 header to match
all the other arches.  This fixes the conform test for msg.h.
2015-07-21 22:46:58 -04:00
Mike Frysinger 43ef687581 ia64: stat.h: rename pad0 to __glibc_reserved0
This fixes the conform test for the stat.h header and makes it match
all the other arches.
2015-07-21 22:43:21 -04:00
Mike Frysinger 1a5cb6c7d5 ia64: sifaction.h: change sa_flags to an int
This fixes the conform test for the sigaction.h header and makes it match
all the other arches.
2015-07-21 22:40:25 -04:00
Mike Frysinger 15fdf937b4 ia64: siginfo.h: delete siginfo name
This fixes the conform test for the siginfo.h header and makes it match
all the other arches.
2015-07-21 22:34:48 -04:00
Chris Metcalf 0ac4f1dab3 tile: Fix BZ #18508 (makecontext yield infinite backtrace)
It turns out tile suffered from the same problem as S390.  However,
disabling CFI information for the __startcontext on tile was not
sufficient to fix the problem; I think the backtracer will just
blindly try to follow the link register (lr) in that case.

Instead, the change adds a cfi_undefined directive for "lr"
and then arranges to call __startcontext directly when the new
context starts, rather than just synthesizing a return to it.
In addition to being a bit easier now to understand the control
flow, this also allows the cfi_undefined directive to be placed in
a way that causes it to be in force at the address that the "lr"
from the called function points to.
2015-07-21 12:11:55 -04:00
Mike Frysinger 7fde904c73 sparc: fix sigaction for 32bit builds [BZ #18694]
Commit a059d359d8 changed the sigaction
struct to pass conform tests, but it ended up also changing the ABI for
32 bit builds.  For 64 bit builds, changing the long to two ints works,
but for 32 bit builds, it inserts 4 extra bytes.  This leads to many
packages randomly failing like bash that spews things like:
	configure: line 471: wait_for: No record of process 0

Bracket the new member by a wordsize check to fix the ABI for 32bit.
2015-07-20 21:53:47 -04:00
H.J. Lu d4358b51c2 Add si_addr_bnd to _sigfault in x86 struct siginfo
X86 struct siginfo in kernel 3.19 has been changed by

commit ee1b58d36aa1b5a79eaba11f5c3633c88231da83
Author: Qiaowei Ren <qiaowei.ren@intel.com>
Date:   Fri Nov 14 07:18:19 2014 -0800

    mpx: Extend siginfo structure to include bound violation information

    This patch adds new fields about bound violation into siginfo
    structure. si_lower and si_upper are respectively lower bound
    and upper bound when bound violation is caused.

This patch updates x86 struct siginfo to enable GDB with MPX support.

	[BZ #18696]
	* sysdeps/unix/sysv/linux/x86/bits/siginfo.h (_sigfault): Add
	si_addr_bnd.
	(si_lower): New.
	(si_upper): Likewise.
2015-07-20 11:54:53 -07:00
Torvald Riegel a2f0363f81 Add and use new glibc-internal futex API.
This adds new functions for futex operations, starting with wait,
abstimed_wait, reltimed_wait, wake.  They add documentation and error
checking according to the current draft of the Linux kernel futex manpage.

Waiting with absolute or relative timeouts is split into separate functions.
This allows for removing a few cases of code duplication in pthreads code,
which uses absolute timeouts; also, it allows us to put platform-specific
code to go from an absolute to a relative timeout into the platform-specific
futex abstractions..

Futex operations that can be canceled are also split out into separate
functions suffixed by "_cancelable".

There are separate versions for both Linux and NaCl; while they currently
differ only slightly, my expectation is that the separate versions of
lowlevellock-futex.h will eventually be merged into futex-internal.h
when we get to move the lll_ functions over to the new futex API.
2015-07-10 13:47:09 +02:00
Roland McGrath af85d409a2 PLT avoidance for _exit in rtld. 2015-07-09 15:25:47 -07:00
Adhemerval Zanella 632b3db8e2 libio: Update powerpc64le libc.abilist
This patch adds the missing fmemopen entry for powerpc64le libc abilist
check file.

	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist
2015-07-09 10:28:58 -03:00
Szabolcs Nagy b8528e771c [AArch64][BZ 18648] change greg_t definition in ucontext.h
This is an ABI breaking change, but

	typedef int greg_t;

is not a useful definition on aarch64.

greg_t is usually used for defining gregset_t which is used
in mcontext_t.  The general registers in mcontext_t can only
be accessed by target specific code and on aarch64 greg_t
is not needed for that so this change is not supposed to break
existing code, just fix the definition.

	[BZ #18648]
	* sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h (greg_t): Change the
	definition to elf_greg_t.

(Added another BZ entry that was missed in the previous commit).
2015-07-09 09:53:30 +01:00
Szabolcs Nagy 14d623bcd1 [AArch64][BZ 18400] fix elf_prpsinfo in procfs.h
Kernel uses int pr_uid, pr_gid, but glibc used unsigned short.

This is an ABI breaking change, but the size and alignment of
the struct and the layout of other members is not changed and
there is no known usage of pr_uid and pr_gid so it is expected
to be safe.

	[BZ #18400]
	* sysdeps/unix/sysv/linux/aarch64/sys/procfs.h (struct elf_prpsinfo):
	Fix pr_uid and pr_gid members.
2015-07-09 09:39:51 +01:00
Adhemerval Zanella fdb7d390dd libio: fmemopen rewrite to POSIX compliance
This patch added a new fmemopen version, for glibc 2.22, that aims to be
POSIX complaint.  It fixes some long-stading glibc fmemopen issues, such
as:

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

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

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

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

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

	* include/stdio.h (fmemopen): Remove hidden prototype.
	(__fmemopen): Add new hidden prototype.
	* libio/Makefile: Add oldfmemopen object.
	* libio/Versions [GLIBC_2.22]: Add new fmemopen symbol.
	* libio/fmemopen.c (__fmemopen): Function rewrite to be POSIX
	compliance.
	* libio/oldfmemopen.c: New file: old fmemopen implementation for
	symbol compatibility.
	* stdio-common/Makefile [tests]: Add new tst-fmemopen3.
	* stdio-common/psiginfo.c [psiginfo]: Call __fmemopen instead of
	fmemopen.
	* stdio-common/tst-fmemopen3.c: New file: more fmemopen tests, focus
	on append and read mode.
	* sysdeps/unix/sysv/linux/aarch64/libc.abilist [GLIBC_2.22]: Add
	fmemopen.
	* sysdeps/unix/sysv/linux/alpha/libc.abilist [GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/arm/libc.abilist [GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/i386/libc.abilist [GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/ia64/libc.abilist [GLIBC_2.22]:
	Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist [GLIBC_2.22]:
	Likewise.
	* sysdeps/unix/sysv/linux/microblaze/libc.abilist [GLIBC_2.22]:
	Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist [GLIBC_2.22]:
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist [GLIBC_2.22]:
	Likewise.
	* sysdeps/unix/sysv/linux/sh/libc.abilist [GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist
	[GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist [GLIBC_2.22]:
	Likewise.
	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist [GLIBC_2.22]:
	Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist [GLIBC_2.22]:
	Likewise.
	* sysdeps/unix/sysv/linux/hppa/libc.abilist [GLIBC_2.22]: Likewise.
	* sysdeps/unix/sysv/linux/nios2/libc.abilist [GLIBC_2.22]: Likewise.
2015-07-08 12:07:21 -03:00
Carlos O'Donell 1c1e312520 Add missing Advanced API (RFC3542) (1) defines.
Fixes bug 18643.

Defines IPV6_RECVPATHMTU, IPV6_PATHMTU, and IPV6_DONTFRAG for Linux.
2015-07-08 10:58:23 -04:00
Stefan Liebler 890b7a4b33 S390: Fix "backtrace() returns infinitely deep stack frames with makecontext()" [BZ #18508].
On s390/s390x backtrace(buffer, size) returns the series of called functions until
"makecontext_ret" and additional entries (up to "size") with "makecontext_ret".
GDB-backtrace is also warning:
"Backtrace stopped: previous frame identical to this frame (corrupt stack?)"

To reproduce this scenario you have to setup a new context with makecontext()
and activate it with setcontext(). See e.g. cf() function in testcase stdlib/tst-makecontext.c.
Or see bug in libgo "Bug 66303 - runtime.Caller() returns infinitely deep stack frames
on s390x " (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66303).

This patch omits the cfi_startproc/cfi_endproc directives in ENTRY/END macro of
__makecontext_ret. Thus no frame information is generated in .eh_frame and backtrace
stops after __makecontext_ret. There is also no .eh_frame info for _start or
thread_start functions.

ChangeLog:

	[BZ #18508]
	* stdlib/Makefile ($(objpfx)tst-makecontext3):
	Depend on $(libdl).
	* stdlib/tst-makecontext.c (cf): Test if _Unwind_Backtrace
	is not called infinitely times.
	(backtrace_helper): New function.
	(trace_arg): New struct.
	(st1): Enlarge stack size.
	* sysdeps/unix/sysv/linux/s390/s390-32/__makecontext_ret.S:
	(__makecontext_ret): Omit cfi_startproc and cfi_endproc.
	* sysdeps/unix/sysv/linux/s390/s390-64/__makecontext_ret.S:
	Likewise.
2015-07-07 16:11:14 +02:00
Stefan Liebler 3fdc131c26 S390: Fix sem.h conformance test failures.
On s390 the following tests are failing due to unkown types time_t, pid_t:
FAIL: conform/UNIX98/sys/sem.h/conform
FAIL: conform/XOPEN2K/sys/sem.h/conform
FAIL: conform/XOPEN2K8/sys/sem.h/conform
FAIL: conform/XPG3/sys/sem.h/conform
FAIL: conform/XPG4/sys/sem.h/conform

This patch changes the s390 specific sem.h and includes sys/types.h instead
of bits/types.h. All other archs include sys/types.h, too.
Including bits/wordsize.h is obselete, because it is already inlcuded in
sys/types.h -> bits/types.h.

ChangeLog:

	* sysdeps/unix/sysv/linux/s390/bits/sem.h:
	Include sys/types.h instead of bits/types.h.
	Remove inclusion of bits/wordsize.h.
2015-07-07 16:11:14 +02:00
Szabolcs Nagy 2b1d7148e3 [AArch64] make setcontext etc functions consistent with the kernel
since
https://sourceware.org/ml/libc-alpha/2014-04/msg00006.html
setcontext etc is no longer tied to the kernel use of ucontext.

in that patch the ucontext reserved space is not used consistently
with the kernel abi: the d8,d9 pair is saved in the slot of q8.

this is ok (*context functions work together), but probably not
desirable (ucontexts created by the kernel and getcontext are
subtly different).

the fix just replaces dN with qN in the save/restore code, which
does a bit more than needed (saves/restores the top half of qN that
is not callee saved), but this should not be an issue (and avoids
having to deal with endianness).

(kernel fpsimd context layout: the first 64bit contains 0x210 the fpsimd
context size and 0x46508001 the FPSIMD_MAGIC, the second 64bit is for
fpsr and fpcr, and the rest is the 128bit q0..q31 registers).

given d8=8.1, d9=9.1,... d15=15.1, the context created by getcontext is

current:

(gdb) x/40xg ctx.uc_mcontext.__reserved
0x410df0 <ctx+464>:     0x0000021046508001      0x0000000000000000
0x410e00 <ctx+480>:     0x0000000000000000      0x0000000000000000
0x410e10 <ctx+496>:     0x0000000000000000      0x0000000000000000
0x410e20 <ctx+512>:     0x0000000000000000      0x0000000000000000
0x410e30 <ctx+528>:     0x0000000000000000      0x0000000000000000
0x410e40 <ctx+544>:     0x0000000000000000      0x0000000000000000
0x410e50 <ctx+560>:     0x0000000000000000      0x0000000000000000
0x410e60 <ctx+576>:     0x0000000000000000      0x0000000000000000
0x410e70 <ctx+592>:     0x0000000000000000      0x0000000000000000
0x410e80 <ctx+608>:     0x4020333333333333      0x4022333333333333
0x410e90 <ctx+624>:     0x0000000000000000      0x0000000000000000
0x410ea0 <ctx+640>:     0x4024333333333333      0x4026333333333333
0x410eb0 <ctx+656>:     0x0000000000000000      0x0000000000000000
0x410ec0 <ctx+672>:     0x4028333333333333      0x402a333333333333
0x410ed0 <ctx+688>:     0x0000000000000000      0x0000000000000000
0x410ee0 <ctx+704>:     0x402c333333333333      0x402e333333333333
0x410ef0 <ctx+720>:     0x0000000000000000      0x0000000000000000
0x410f00 <ctx+736>:     0x0000000000000000      0x0000000000000000
0x410f10 <ctx+752>:     0x0000000000000000      0x0000000000000000
0x410f20 <ctx+768>:     0x0000000000000000      0x0000000000000000

fixed:

(gdb) x/40xg ctx.uc_mcontext.__reserved
0x410d70 <ctx+464>:     0x0000021046508001      0x0000000000000000
0x410d80 <ctx+480>:     0x0000000000000000      0x0000000000000000
0x410d90 <ctx+496>:     0x0000000000000000      0x0000000000000000
0x410da0 <ctx+512>:     0x0000000000000000      0x0000000000000000
0x410db0 <ctx+528>:     0x0000000000000000      0x0000000000000000
0x410dc0 <ctx+544>:     0x0000000000000000      0x0000000000000000
0x410dd0 <ctx+560>:     0x0000000000000000      0x0000000000000000
0x410de0 <ctx+576>:     0x0000000000000000      0x0000000000000000
0x410df0 <ctx+592>:     0x0000000000000000      0x0000000000000000
0x410e00 <ctx+608>:     0x4020333333333333      0x0000000000000000
0x410e10 <ctx+624>:     0x4022333333333333      0x0000000000000000
0x410e20 <ctx+640>:     0x4024333333333333      0x0000000000000000
0x410e30 <ctx+656>:     0x4026333333333333      0x0000000000000000
0x410e40 <ctx+672>:     0x4028333333333333      0x0000000000000000
0x410e50 <ctx+688>:     0x402a333333333333      0x0000000000000000
0x410e60 <ctx+704>:     0x402c333333333333      0x0000000000000000
0x410e70 <ctx+720>:     0x402e333333333333      0x0000000000000000
0x410e80 <ctx+736>:     0x0000000000000000      0x0000000000000000
0x410e90 <ctx+752>:     0x0000000000000000      0x0000000000000000
0x410ea0 <ctx+768>:     0x0000000000000000      0x0000000000000000

2015-07-06  Szabolcs Nagy  <szabolcs.nagy@arm.com>

	* sysdeps/unix/sysv/linux/aarch64/getcontext.S (__getcontext): Use q
	registers instead of d ones so the layout is kernel abi compatible.
	* sysdeps/unix/sysv/linux/aarch64/setcontext.S (__setcontext): Likewise.
	* sysdeps/unix/sysv/linux/aarch64/swapcontext.S (__swapcontext):
	Likewise.# Please enter the commit message for your changes. Lines starting
2015-07-06 12:46:43 +01:00
Torvald Riegel 4eb984d3ab Clean up BUSY_WAIT_NOP and atomic_delay.
This patch combines BUSY_WAIT_NOP and atomic_delay into a new
atomic_spin_nop function and adjusts all clients.  The new function is
put into atomic.h because what is best done in a spin loop is
architecture-specific, and atomics must be used for spinning.  The
function name is meant to tell users that this has no effect on
synchronization semantics but is a performance aid for spinning.
2015-06-30 15:57:15 +02:00
Joseph Myers 31545c2327 Update headers for Linux 4.0, 4.1 definitions.
This patch updates installed glibc headers for new definitions from
Linux 4.0 and 4.1 that seem relevant to glibc headers.  In addition, I
noticed that PF_IB / AF_IB, added in Linux 3.11, were missing for no
obvious reason, so added those as well.

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

	* sysdeps/unix/sysv/linux/bits/in.h (IP_CHECKSUM): New macro.
	* sysdeps/unix/sysv/linux/bits/socket.h (PF_IB): Likewise.
	(PF_MPLS): Likewise.
	(AF_IB): Likewise.
	(AF_MPLS): Likewise.
	* sysdeps/unix/sysv/linux/sys/mount.h (MS_LAZYTIME): New enum
	value and macro.
	(MS_RMT_MASK): Include MS_LAZYTIME.
2015-06-29 14:38:46 +00:00
Roland McGrath 010186901d Print more information in tst-getcpu failure case. 2015-06-24 13:56:46 -07:00
Joseph Myers d1ac55d890 Fix netinet/in.h MCAST_* namespace (bug 18558).
sysdeps/unix/sysv/linux/bits/in.h (as included in netinet/in.h, and
via that in netdb.h and arpa/inet.h) defines a series of MCAST_*
macros, both under __USE_MISC and then again unconditionally.  These
are not POSIX macros, nor in any of the namespaces listed in POSIX as
reserved for this header, so should not be defined unconditionally.
This patch duly removes the unconditional definitions, leaving the
ones conditional on __USE_MISC.

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

	[BZ #18558]
	* sysdeps/unix/sysv/linux/bits/in.h (MCAST_JOIN_GROUP): Remove
	unconditional definition.
	(MCAST_BLOCK_SOURCE): Likewise.
	(MCAST_UNBLOCK_SOURCE): Likewise.
	(MCAST_LEAVE_GROUP): Likewise.
	(MCAST_JOIN_SOURCE_GROUP): Likewise.
	(MCAST_LEAVE_SOURCE_GROUP): Likewise.
	(MCAST_MSFILTER): Likewise.
	* conform/Makefile (test-xfail-XOPEN2K/arpa/inet.h/conform):
	Remove variable.
	(test-xfail-XOPEN2K/netdb.h/conform): Likewise.
	(test-xfail-XOPEN2K/netinet/in.h/conform): Likewise.
	(test-xfail-XOPEN2K8/arpa/inet.h/conform): Likewise.
	(test-xfail-XOPEN2K8/netdb.h/conform): Likewise.
	(test-xfail-XOPEN2K8/netinet/in.h/conform): Likewise.
2015-06-18 19:48:22 +00:00
Andrew Senkevich a6336cc446 Vector sincosf for x86_64 and tests.
Here is implementation of vectorized sincosf containing SSE, AVX,
AVX2 and AVX512 versions according to Vector ABI
<https://groups.google.com/forum/#!topic/x86-64-abi/LmppCfN1rZ4>.

    * NEWS: Mention addition of x86_64 vector sincosf.
    * math/test-float-vlen16.h: Added wrapper for sincosf tests.
    * math/test-float-vlen4.h: Likewise.
    * math/test-float-vlen8.h: Likewise.
    * sysdeps/unix/sysv/linux/x86_64/libmvec.abilist: New symbols added.
    * sysdeps/x86/fpu/bits/math-vector.h: Added sincosf SIMD declaration.
    * sysdeps/x86_64/fpu/Makefile (libmvec-support): Added new files.
    * sysdeps/x86_64/fpu/Versions: New versions added.
    * sysdeps/x86_64/fpu/libm-test-ulps: Regenerated.
    * sysdeps/x86_64/fpu/multiarch/Makefile (libmvec-sysdep_routines):
    Added build of SSE, AVX2 and AVX512 IFUNC versions.
    * sysdeps/x86_64/fpu/multiarch/svml_s_sincosf16_core.S
    * sysdeps/x86_64/fpu/multiarch/svml_s_sincosf16_core_avx512.S
    * sysdeps/x86_64/fpu/multiarch/svml_s_sincosf4_core.S
    * sysdeps/x86_64/fpu/multiarch/svml_s_sincosf4_core_sse4.S
    * sysdeps/x86_64/fpu/multiarch/svml_s_sincosf8_core.S
    * sysdeps/x86_64/fpu/multiarch/svml_s_sincosf8_core_avx2.S
    * sysdeps/x86_64/fpu/svml_s_sincosf16_core.S
    * sysdeps/x86_64/fpu/svml_s_sincosf4_core.S
    * sysdeps/x86_64/fpu/svml_s_sincosf8_core.S
    * sysdeps/x86_64/fpu/svml_s_sincosf8_core_avx.S
    * sysdeps/x86_64/fpu/svml_s_sincosf_data.S: New file.
    * sysdeps/x86_64/fpu/svml_s_sincosf_data.h: New file.
    * sysdeps/x86_64/fpu/svml_s_wrapper_impl.h: Added 3 argument wrappers.
    * sysdeps/x86_64/fpu/test-float-vlen16.c: : Vector sincosf tests.
    * sysdeps/x86_64/fpu/test-float-vlen16-wrappers.c: Likewise.
    * sysdeps/x86_64/fpu/test-float-vlen4-wrappers.c: Likewise.
    * sysdeps/x86_64/fpu/test-float-vlen4.c: Likewise.
    * sysdeps/x86_64/fpu/test-float-vlen8-avx2-wrappers.c: Likewise.
    * sysdeps/x86_64/fpu/test-float-vlen8-avx2.c: Likewise.
    * sysdeps/x86_64/fpu/test-float-vlen8-wrappers.c: Likewise.
    * sysdeps/x86_64/fpu/test-float-vlen8.c: Likewise.
2015-06-18 20:11:27 +03:00
Andrew Senkevich c9a8c526ac Vector sincos for x86_64 and tests.
Here is implementation of vectorized sincos containing SSE, AVX,
AVX2 and AVX512 versions according to Vector ABI
<https://groups.google.com/forum/#!topic/x86-64-abi/LmppCfN1rZ4>.

    * NEWS: Mention addition of x86_64 vector sincos.
    * bits/libm-simd-decl-stubs.h: Added stubs for sincos.
    * math/math.h (__MATHDECL_VEC): New macro.
    * math/bits/mathcalls.h: Added sincos declaration with __MATHDECL_VEC.
    * math/gen-libm-have-vector-test.sh: Added generation of sincos wrapper
    declaration under condition.
    * math/test-vec-loop.h (TEST_VEC_LOOP): Refactored.
    * math/test-double-vlen2.h: Added wrapper for sincos tests, reflected
    TEST_VEC_LOOP change.
    * math/test-double-vlen4.h: Likewise.
    * math/test-double-vlen8.h: Likewise.
    * math/test-float-vlen16.h: Reflected TEST_VEC_LOOP change.
    * math/test-float-vlen4.h: Likewise.
    * math/test-float-vlen8.h: Likewise.
    * sysdeps/unix/sysv/linux/x86_64/libmvec.abilist: New symbols added.
    * sysdeps/x86/fpu/bits/math-vector.h: Added sincos SIMD declaration.
    * sysdeps/x86_64/fpu/Makefile (libmvec-support): Added new files.
    * sysdeps/x86_64/fpu/Versions: New versions added.
    * sysdeps/x86_64/fpu/libm-test-ulps: Regenerated.
    * sysdeps/x86_64/fpu/multiarch/Makefile (libmvec-sysdep_routines):
    Added build of SSE, AVX2 and AVX512 IFUNC versions.
    * sysdeps/x86_64/fpu/multiarch/svml_d_sincos2_core.S: New file.
    * sysdeps/x86_64/fpu/multiarch/svml_d_sincos2_core_sse4.S: New file.
    * sysdeps/x86_64/fpu/multiarch/svml_d_sincos4_core.S: New file.
    * sysdeps/x86_64/fpu/multiarch/svml_d_sincos4_core_avx2.S: New file.
    * sysdeps/x86_64/fpu/multiarch/svml_d_sincos8_core.S: New file.
    * sysdeps/x86_64/fpu/multiarch/svml_d_sincos8_core_avx512.S: New file.
    * sysdeps/x86_64/fpu/svml_d_sincos2_core.S: New file.
    * sysdeps/x86_64/fpu/svml_d_sincos4_core.S: New file.
    * sysdeps/x86_64/fpu/svml_d_sincos4_core_avx.S: New file.
    * sysdeps/x86_64/fpu/svml_d_sincos8_core.S: New file.
    * sysdeps/x86_64/fpu/svml_d_sincos_data.S: New file.
    * sysdeps/x86_64/fpu/svml_d_sincos_data.h: New file.
    * sysdeps/x86_64/fpu/svml_d_wrapper_impl.h: Added wrappers for sincos.
    * sysdeps/x86_64/fpu/test-double-vlen2-wrappers.c: Vector sincos tests.
    * sysdeps/x86_64/fpu/test-double-vlen2.c: Likewise.
    * sysdeps/x86_64/fpu/test-double-vlen4-avx2-wrappers.c: Likewise.
    * sysdeps/x86_64/fpu/test-double-vlen4-avx2.c: Likewise.
    * sysdeps/x86_64/fpu/test-double-vlen4-wrappers.c: Likewise.
    * sysdeps/x86_64/fpu/test-double-vlen4.c: Likewise.
    * sysdeps/x86_64/fpu/test-double-vlen8-wrappers.c: Likewise.
    * sysdeps/x86_64/fpu/test-double-vlen8.c: Likewise.
2015-06-18 17:55:55 +03:00
Andrew Senkevich 8aa92022e2 Vector powf for x86_64 and tests.
Here is implementation of vectorized powf containing SSE, AVX,
AVX2 and AVX512 versions according to Vector ABI
<https://groups.google.com/forum/#!topic/x86-64-abi/LmppCfN1rZ4>.

    * sysdeps/unix/sysv/linux/x86_64/libmvec.abilist: New symbols added.
    * sysdeps/x86/fpu/bits/math-vector.h: Added SIMD declaration and asm
    redirections for powf.
    * sysdeps/x86_64/fpu/Makefile (libmvec-support): Added new files.
    * sysdeps/x86_64/fpu/Versions: New versions added.
    * sysdeps/x86_64/fpu/libm-test-ulps: Regenerated.
    * sysdeps/x86_64/fpu/multiarch/Makefile (libmvec-sysdep_routines):
    Added build of SSE, AVX2 and AVX512 IFUNC versions.
    * sysdeps/x86_64/fpu/svml_s_wrapper_impl.h: Added 2 argument wrappers.
    * sysdeps/x86_64/fpu/multiarch/svml_s_powf16_core.S: New file.
    * sysdeps/x86_64/fpu/multiarch/svml_s_powf16_core_avx512.S: New file.
    * sysdeps/x86_64/fpu/multiarch/svml_s_powf4_core.S: New file.
    * sysdeps/x86_64/fpu/multiarch/svml_s_powf4_core_sse4.S: New file.
    * sysdeps/x86_64/fpu/multiarch/svml_s_powf8_core.S: New file.
    * sysdeps/x86_64/fpu/multiarch/svml_s_powf8_core_avx2.S: New file.
    * sysdeps/x86_64/fpu/svml_s_powf16_core.S: New file.
    * sysdeps/x86_64/fpu/svml_s_powf4_core.S: New file.
    * sysdeps/x86_64/fpu/svml_s_powf8_core.S: New file.
    * sysdeps/x86_64/fpu/svml_s_powf8_core_avx.S: New file.
    * sysdeps/x86_64/fpu/svml_s_powf_data.S: New file.
    * sysdeps/x86_64/fpu/svml_s_powf_data.h: New file.
    * sysdeps/x86_64/fpu/test-float-vlen16-wrappers.c: Vector powf tests.
    * sysdeps/x86_64/fpu/test-float-vlen16.c: Likewise.
    * sysdeps/x86_64/fpu/test-float-vlen4-wrappers.c: Likewise.
    * sysdeps/x86_64/fpu/test-float-vlen4.c: Likewise.
    * sysdeps/x86_64/fpu/test-float-vlen8-avx2-wrappers.c: Likewise.
    * sysdeps/x86_64/fpu/test-float-vlen8-avx2.c: Likewise.
    * sysdeps/x86_64/fpu/test-float-vlen8-wrappers.c: Likewise.
    * sysdeps/x86_64/fpu/test-float-vlen8.c: Likewise.
    * math/test-float-vlen16.h: Fixed 2 argument macro.
    * math/test-float-vlen4.h: Likewise.
    * math/test-float-vlen8.h: Likewise.
    * NEWS: Mention addition of x86_64 vector powf.
2015-06-18 17:04:07 +03:00
Joseph Myers c362135134 Fix nice getpriority, setpriority namespace (bug 18553).
nice (XPG3) calls getpriority and setpriority (in XPG4 but not XPG3,
i.e. UX-shaded in XPG4).  This patch fixes this by making those
functions into weak aliases of __* functions and calling the __*
versions as needed.

Tested for x86_64 and x86 (testsuite, and that disassembly of
installed shared libraries is unchanged by this patch).

This completes cleaning up the unsorted linknamespace test XFAILs.

	[BZ #18553]
	* resource/getpriority.c (getpriority): Rename to __getpriority
	and define as weak alias of __getpriority.
	* resource/setpriority.c (setpriority): Rename to __setpriority
	and define as weak alias of __setpriority.
	* sysdeps/mach/hurd/getpriority.c (getpriority): Rename to
	__getpriority and define as weak alias of __getpriority.
	* sysdeps/mach/hurd/setpriority.c (setpriority): Rename to
	__setpriority and define as weak alias of __setpriority.
	* sysdeps/unix/syscalls.list (getpriority): Use __getpriority as
	strong name.
	(setpriority): Use __setpriority as strong name.
	* sysdeps/unix/sysv/linux/getpriority.c (getpriority): Rename to
	__getpriority and define as weak alias of __getpriority.
	* include/sys/resource.h (__getpriority): Declare.  Use
	libc_hidden_proto.
	(__setpriority): Likewise.
	(getpriority): Don't use libc_hidden_proto.
	(setpriority): Likewise.
	* sysdeps/posix/nice.c (nice): Call __getpriority instead of
	getpriority.  Call __setpriority instead of setpriority.
	* conform/Makefile (test-xfail-XPG3/unistd.h/linknamespace):
	Remove variable.
2015-06-17 20:22:39 +00:00
Joseph Myers 0595c98494 Fix mq_notify socket, recv namespace (bug 18546).
mq_notify (in the 1996 edition of POSIX) brings in references to recv
and socket (not in POSIX until the 2001 edition).  This patch fixes
this by using __recv and __socket, exporting them from libc at version
GLIBC_PRIVATE.

Tested for x86_64 and x86 (testsuite and comparison of installed
stripped shared libraries; PLT / dynamic symbol table changes render
the comparison not particularly useful for libc).

	[BZ #18546]
	* socket/recv.c (__recv): Use libc_hidden_def.
	* socket/socket.c (__socket): Likewise.
	* sysdeps/mach/hurd/recv.c (__recv): Likewise.
	* sysdeps/mach/hurd/socket.c (__socket): Likewise.
	* sysdeps/unix/sysv/linux/generic/recv.c (__recv): Likewise.
	* sysdeps/unix/sysv/linux/recv.c (__recv): Use libc_hidden_weak.
	* sysdeps/unix/sysv/linux/socket.c (__socket): Use
	libc_hidden_def.
	* sysdeps/unix/sysv/linux/x86_64/recv.c (__recv): Use
	libc_hidden_weak.
	* include/sys/socket.h (__socket): Do not use attribute_hidden.
	Use libc_hidden_proto.
	(__recv): Likewise.
	* socket/Versions (libc): Export __recv and __socket at version
	GLIBC_PRIVATE.
	* sysdeps/unix/sysv/linux/mq_notify.c (helper_thread): Call __recv
	instead of recv.
	(init_mq_netlink): Call __socket instead of socket.
	* conform/Makefile (test-xfail-POSIX/mqueue.h/linknamespace):
	Remove variable.
2015-06-17 20:20:08 +00:00
Joseph Myers dfa2d21450 Fix mq_receive, mq_send mq_timed* namespace (bug 18545).
mq_receive calls mq_timedreceive, and mq_send calls mq_timedsend.  But
mq_receive and mq_send were in POSIX by 1996, while mq_timed* were
added in the 2001 edition of POSIX.  This patch fixes this by making
mq_timed* into weak aliases for __mq_timed* and calling the
__mq_timed* names.

Tested for x86_64 and x86 (testsuite, and that disassembly of
installed shared libraries is unchanged by the patch).

	[BZ #18545]
	* rt/mq_timedreceive.c (mq_timedreceive): Rename to
	__mq_timedreceive and define as alias of __mq_timedreceive.  Use
	hidden_weak.
	* rt/mq_timedsend.c (mq_timedsend): Rename to __mq_timedsend and
	define as alias of __mq_timedsend.  Use hidden_weak.
	* sysdeps/unix/sysv/linux/syscalls.list (mq_timedsend): Use
	__mq_timedsend as strong name.
	(mq_timedreceive): Use __mq_timedreceive as strong name.
	* include/mqueue.h (__mq_timedsend): Declare.  Use hidden_proto.
	(__mq_timedreceive): Likewise.
	* sysdeps/unix/sysv/linux/mq_receive.c (mq_receive): Call
	__mq_timedreceive instead of mq_timedreceive.
	* sysdeps/unix/sysv/linux/mq_send.c (mq_send): Call __mq_timedsend
	instead of mq_timedsend.
	* conform/Makefile (test-xfail-UNIX98/mqueue.h/linknamespace):
	Remove variable.
2015-06-17 20:19:04 +00:00