6814679...
by
Roland McGrath <email address hidden>
Simplify getpid handling of the race case.
0a982a2...
by
Roland McGrath <email address hidden>
Make armv7 strcmp assembly compatible with ARM mode and SFI.
0ded08a...
by
Adhemerval Zanella <email address hidden>
Fix elf/tst-tls9-static build
This patch fixes the tst-tlsmod[5/6].so build in system that uses
-Wl,--as-needed as default in linker option. Without this option
the testing shared library that does not have libc.so in DT_NEEDED
and the tst-tls9-static fails in architecture that use the
./sysdeps/unix/sysv/linux/<arch>/dl-static.c trick.
55d4d55...
by
Roland McGrath <email address hidden>
Silence a missing-noreturn warning for _Unwind_Resume.
This patch fixes bug 16064, i386 fenv_t not including SSE state, using
the technique suggested there of storing the state in the existing
__eip field of fenv_t to avoid needing to increase the size of fenv_t
and add new symbol versions. The included testcase, which previously
failed for i386 (but passed for x86_64), illustrates how the previous
state was buggy.
This patch causes the SSE state to be included *to the extent it is on
x86_64*. Where some state should logically be included but isn't for
x86_64 (see bug 16068), this patch does not cause it to be included
for i386 either. The idea is that any patch fixing that bug should
fix it for both x86_64 and i386 at once.
Tested i386 and x86_64. (I haven't tested the case of a CPU without
SSE2 disabling the test.)
[BZ #16064]
* sysdeps/i386/fpu/fegetenv.c: Include <unistd.h>, <ldsodefs.h>
and <dl-procinfo.h>.
(__fegetenv): Save SSE state in envp->__eip if supported.
* sysdeps/i386/fpu/feholdexcpt.c (feholdexcept): Save SSE state in
envp->__eip if supported.
* sysdeps/i386/fpu/fesetenv.c: Include <unistd.h>, <ldsodefs.h>
and <dl-procinfo.h>.
(__fesetenv): Always set __eip, __cs_selector, __opcode,
__data_offset and __data_selector in environment to 0. Set SSE
state if supported.
* sysdeps/x86/fpu/Makefile [$(subdir) = math] (tests): Add
test-fenv-sse.
[$(subdir) = math] (CFLAGS-test-fenv-sse.c): Add -msse2
-mfpmath=sse.
* sysdeps/x86/fpu/test-fenv-sse.c: New file.
Added support for TX lock elision of pthread mutexes on s390 and
s390x. This may improve lock scaling of existing programs on TX
capable systems. The lock elision code is only built with
--enable-lock-elision=yes and then requires a GCC version supporting
the TX builtins. With lock elision default mutexes are elided via
__builtin_tbegin, if the cpu supports transactions. By default lock
elision is not enabled and the elision code is not built.
Add an optimized implementation of strcmp for ARMv7-A cores. This
implementation is significantly faster than the current generic C
implementation, particularly for strings of 16 bytes and longer.
Tested with the glibc string tests for arm-linux-gnueabihf and
armeb-linux-gnueabihf.
The code was written by ARM, who have agreed to assign the copyright
to the FSF for integration into glibc.
ChangeLog:
2014-05-09 Will Newton <email address hidden>
* sysdeps/arm/armv7/strcmp.S: New file.
* NEWS: Mention addition of ARMv7 optimized strcmp.
95afbbe...
by
Roland McGrath <email address hidden>
Some configure-related decrufting.
7a1a51b...
by
Roland McGrath <email address hidden>
