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2016-02-23[x86_64] Set DL_RUNTIME_UNALIGNED_VEC_SIZE to 8hjl/plt/2.22H.J. Lu
Due to GCC bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58066 __tls_get_addr may be called with 8-byte stack alignment. Although this bug has been fixed in GCC 4.9.4, 5.3 and 6, we can't assume that stack will be always aligned at 16 bytes. Since SSE optimized memory/string functions with aligned SSE register load and store are used in the dynamic linker, we must set DL_RUNTIME_UNALIGNED_VEC_SIZE to 8 so that _dl_runtime_resolve_sse will align the stack before calling _dl_fixup: Dump of assembler code for function _dl_runtime_resolve_sse: 0x00007ffff7deea90 <+0>: push %rbx 0x00007ffff7deea91 <+1>: mov %rsp,%rbx 0x00007ffff7deea94 <+4>: and $0xfffffffffffffff0,%rsp ^^^^^^^^^^^ Align stack to 16 bytes 0x00007ffff7deea98 <+8>: sub $0x100,%rsp 0x00007ffff7deea9f <+15>: mov %rax,0xc0(%rsp) 0x00007ffff7deeaa7 <+23>: mov %rcx,0xc8(%rsp) 0x00007ffff7deeaaf <+31>: mov %rdx,0xd0(%rsp) 0x00007ffff7deeab7 <+39>: mov %rsi,0xd8(%rsp) 0x00007ffff7deeabf <+47>: mov %rdi,0xe0(%rsp) 0x00007ffff7deeac7 <+55>: mov %r8,0xe8(%rsp) 0x00007ffff7deeacf <+63>: mov %r9,0xf0(%rsp) 0x00007ffff7deead7 <+71>: movaps %xmm0,(%rsp) 0x00007ffff7deeadb <+75>: movaps %xmm1,0x10(%rsp) 0x00007ffff7deeae0 <+80>: movaps %xmm2,0x20(%rsp) 0x00007ffff7deeae5 <+85>: movaps %xmm3,0x30(%rsp) 0x00007ffff7deeaea <+90>: movaps %xmm4,0x40(%rsp) 0x00007ffff7deeaef <+95>: movaps %xmm5,0x50(%rsp) 0x00007ffff7deeaf4 <+100>: movaps %xmm6,0x60(%rsp) 0x00007ffff7deeaf9 <+105>: movaps %xmm7,0x70(%rsp) [BZ #19679] * sysdeps/x86_64/dl-trampoline.S (DL_RUNIME_UNALIGNED_VEC_SIZE): Renamed to ... (DL_RUNTIME_UNALIGNED_VEC_SIZE): This. Set to 8. (DL_RUNIME_RESOLVE_REALIGN_STACK): Renamed to ... (DL_RUNTIME_RESOLVE_REALIGN_STACK): This. Updated. (DL_RUNIME_RESOLVE_REALIGN_STACK): Renamed to ... (DL_RUNTIME_RESOLVE_REALIGN_STACK): This. * sysdeps/x86_64/dl-trampoline.h (DL_RUNIME_RESOLVE_REALIGN_STACK): Renamed to ... (DL_RUNTIME_RESOLVE_REALIGN_STACK): This.
2016-02-23Support x86-64 assmebler without AVX512H.J. Lu
When x86-64 assmebler doesn't support AVX512, we should make _dl_runtime_resolve_avx512/_dl_runtime_profile_avx512 as aliases of _dl_runtime_resolve_avx/_dl_runtime_profile_avx. Tested on x86-64 using GCC 5.2 with binutils 20151008 and GCC 4.8 with binutils 20130219. There are no differences in ld.so with binutils 20151008. There are no unexpected failures with binutils 20130219 and 20151008. [BZ #19124] * sysdeps/x86_64/dl-trampoline.S [!HAVE_AVX512_ASM_SUPPORT] (_dl_runtime_resolve_avx512): Make it a hidden alias of _dl_runtime_resolve_avx. (_dl_runtime_profile_avx512): Make it a hidden alias of _dl_runtime_profile_avx.
2015-08-14Remove incorrect register mov in floorf/nearbyint on x86_64Siddhesh Poyarekar
The change in 0b5395f052ee09cd7e3d219af4e805c38058afb5 replaced calls to __get_cpu_features@plt followed by a mov from rax to rdx, with a single macro LOAD_RTLD_GLOBAL_RO_RDX. It is pretty clear that there was a typo in s_floorf and __nearbyint due to which the (now incorrect) mov was not removed. This patch removes that mov. * sysdeps/x86_64/fpu/multiarch/s_floorf.S (__floorf): Remove unnecessary movq. * sysdeps/x86_64/fpu/multiarch/s_nearbyint.S (__nearbyint): Likewise.
2015-08-05Don't run tst-getpid2 with LD_BIND_NOW=1H.J. Lu
Since _dl_x86_64_save_sse and _dl_x86_64_restore_sse are removed now, we don't need to run tst-getpid2 with LD_BIND_NOW=1. * sysdeps/unix/sysv/linux/Makefile (tst-getpid2-ENV): Removed.
2015-08-05Use SSE optimized strcmp in x86-64 ld.soH.J. Lu
Since ld.so preserves vector registers now, we can SSE optimized strcmp in x86-64 ld.so. * sysdeps/x86_64/strcmp.S: Remove "#if !IS_IN (libc)".
2015-08-05Remove x86-64 rtld-xxx.c and rtld-xxx.SH.J. Lu
Since ld.so preserves vector registers now, we can use the regular, non-ifunc string and memory functions in ld.so. * sysdeps/x86_64/rtld-memcmp.c: Removed. * sysdeps/x86_64/rtld-memset.S: Likewise. * sysdeps/x86_64/rtld-strchr.S: Likewise. * sysdeps/x86_64/rtld-strlen.S: Likewise. * sysdeps/x86_64/multiarch/rtld-memcmp.c: Likewise. * sysdeps/x86_64/multiarch/rtld-memset.S: Likewise.
2015-08-05Replace %xmm8 with %xmm0H.J. Lu
Since ld.so preserves vector registers now, we can use %xmm0 to avoid the REX prefix. * sysdeps/x86_64/memset.S: Replace %xmm8 with %xmm0.
2015-08-05Replace %xmm[8-12] with %xmm[0-4]H.J. Lu
Since ld.so preserves vector registers now, we can use %xmm[0-4] to avoid the REX prefix. * sysdeps/x86_64/strlen.S: Replace %xmm[8-12] with %xmm[0-4].
2015-08-05Don't disable SSE in x86-64 ld.soH.J. Lu
Since ld.so preserves vector registers now, we can use SSE in ld.so. * sysdeps/i386/Makefile [$(subdir) == elf] (CFLAGS-.os): Add -mno-sse -mno-mmx for $(all-rtld-routines). [$(subdir) == elf] (tests-special): Add $(objpfx)tst-ld-sse-use.out. [$(subdir) == elf] ($(objpfx)tst-ld-sse-use.out): New rule. * sysdeps/x86/Makefile [$(subdir) == elf] (CFLAGS-.os): Removed. [$(subdir) == elf] (tests-special): Likewise. [$(subdir) == elf] ($(objpfx)tst-ld-sse-use.out): Likewise. * sysdeps/x86_64/Makefile [$(subdir) == elf] (CFLAGS-.os): Add -mno-mmx for $(all-rtld-routines).
2015-08-05Save and restore vector registers in x86-64 ld.soH.J. Lu
This patch initiaizes GLRO(dl_x86_xstate) in dl_platform_init to indicate if the processor supports SSE, AVX or AVX512. It uses this information to properly save and restore vector registers in ld.so. Now we can use SSE in ld.so and delete FOREIGN_CALL macros. [BZ #15128] * sysdeps/x86_64/Makefile [$(subdir) == elf] (tests): Add ifuncmain8. (modules-names): Add ifuncmod8. ($(objpfx)ifuncmain8): New rule. * sysdeps/x86_64/dl-machine.h: Include <dl-procinfo.h> and <cpuid.h>. (elf_machine_runtime_setup): Use _dl_runtime_resolve_sse, _dl_runtime_resolve_avx, or _dl_runtime_resolve_avx512, _dl_runtime_profile_sse, _dl_runtime_profile_avx, or _dl_runtime_profile_avx512, based on HAS_ARCH_FEATURE. * sysdeps/x86_64/dl-trampoline.S: Rewrite. * sysdeps/x86_64/dl-trampoline.h: Likewise. * sysdeps/x86_64/ifuncmain8.c: New file. * sysdeps/x86_64/ifuncmod8.c: Likewise. * sysdeps/x86_64/nptl/tcb-offsets.sym (RTLD_SAVESPACE_SSE): Removed. * sysdeps/x86_64/nptl/tls.h (__128bits): Removed. (tcbhead_t): Change rtld_must_xmm_save to __glibc_unused1. Change rtld_savespace_sse to __glibc_unused2. (RTLD_CHECK_FOREIGN_CALL): Removed. (RTLD_ENABLE_FOREIGN_CALL): Likewise. (RTLD_PREPARE_FOREIGN_CALL): Likewise. (RTLD_FINALIZE_FOREIGN_CALL): Likewise.
2015-08-05Align stack when calling __errno_locationH.J. Lu
We should align stack to 16 bytes when calling __errno_location. [BZ #18661] * sysdeps/x86_64/fpu/s_cosf.S (__cosf): Align stack to 16 bytes when calling __errno_location. * sysdeps/x86_64/fpu/s_sincosf.S (__sincosf): Likewise. * sysdeps/x86_64/fpu/s_sinf.S (__sinf): Likewise.
2015-08-05Align stack to 16 bytes when calling __gettimeofdayH.J. Lu
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.
2015-08-05Align stack to 16 bytes when calling __setcontextH.J. Lu
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.
2015-08-05Compile {memcpy,strcmp}-sse2-unaligned.S only for libcH.J. Lu
{memcpy,strcmp}-sse2-unaligned.S aren't needed in ld.so. * sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S: Compile only for libc. * sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S: Likewise.
2015-08-05Update x86 elision-conf.c for <cpu-features.h>H.J. Lu
This patch updates x86 elision-conf.c to use the newly defined HAS_CPU_FEATURE from <cpu-features.h>. * sysdeps/unix/sysv/linux/x86/elision-conf.c (elision_init): Replace HAS_RTM with HAS_CPU_FEATURE (RTM).
2015-08-05Update libmvec multiarch functions for <cpu-features.h>H.J. Lu
This patch updates libmvec multiarch functions to use the newly defined HAS_CPU_FEATURE, HAS_ARCH_FEATURE and LOAD_RTLD_GLOBAL_RO_RDX from <cpu-features.h>. * math/Makefile ($(addprefix $(objpfx), $(libm-vec-tests))): Remove $(objpfx)init-arch.o. * sysdeps/x86_64/fpu/Makefile (libmvec-support): Remove init-arch. * sysdeps/x86_64/fpu/math-tests-arch.h (avx_usable): Removed. (INIT_ARCH_EXT): Defined as empty. (CHECK_ARCH_EXT): Replace HAS_XXX with HAS_ARCH_FEATURE (XXX). * sysdeps/x86_64/fpu/multiarch/svml_d_cos2_core.S: Remove __init_cpu_features call. Replace HAS_XXX with HAS_CPU_FEATURE/HAS_ARCH_FEATURE (XXX). * sysdeps/x86_64/fpu/multiarch/svml_d_cos4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_cos8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_exp2_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_exp4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_exp8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_log2_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_log4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_log8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_pow2_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_pow4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_pow8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_sin2_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_sin4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_sin8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_sincos2_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_sincos4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_sincos8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf16_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_expf16_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_expf4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_expf8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_logf16_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_logf4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_logf8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_powf16_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_powf4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_powf8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_sincosf16_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_sincosf4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_sincosf8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_sinf16_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_sinf4_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_sinf8_core.S: Likewise.
2015-08-05Update i686 multiarch functions for <cpu-features.h>H.J. Lu
This patch updates i686 multiarch functions to use the newly defined HAS_CPU_FEATURE, HAS_ARCH_FEATURE, LOAD_GOT_AND_RTLD_GLOBAL_RO and LOAD_FUNC_GOT_EAX from <cpu-features.h>. * sysdeps/i386/i686/fpu/multiarch/e_expf.c: Replace HAS_XXX with HAS_CPU_FEATURE/HAS_ARCH_FEATURE (XXX). * sysdeps/i386/i686/fpu/multiarch/s_cosf.c: Likewise. * sysdeps/i386/i686/fpu/multiarch/s_cosf.c: Likewise. * sysdeps/i386/i686/fpu/multiarch/s_sincosf.c: Likewise. * sysdeps/i386/i686/fpu/multiarch/s_sinf.c: Likewise. * sysdeps/i386/i686/multiarch/ifunc-impl-list.c: Likewise. * sysdeps/i386/i686/multiarch/s_fma.c: Likewise. * sysdeps/i386/i686/multiarch/s_fmaf.c: Likewise. * sysdeps/i386/i686/multiarch/bcopy.S: Remove __init_cpu_features call. Merge SHARED and !SHARED. Add LOAD_GOT_AND_RTLD_GLOBAL_RO. Use LOAD_FUNC_GOT_EAX to load function address. Replace HAS_XXX with HAS_CPU_FEATURE/HAS_ARCH_FEATURE (XXX). * sysdeps/i386/i686/multiarch/bzero.S: Likewise. * sysdeps/i386/i686/multiarch/memchr.S: Likewise. * sysdeps/i386/i686/multiarch/memcmp.S: Likewise. * sysdeps/i386/i686/multiarch/memcpy.S: Likewise. * sysdeps/i386/i686/multiarch/memcpy_chk.S: Likewise. * sysdeps/i386/i686/multiarch/memmove.S: Likewise. * sysdeps/i386/i686/multiarch/memmove_chk.S: Likewise. * sysdeps/i386/i686/multiarch/mempcpy.S: Likewise. * sysdeps/i386/i686/multiarch/mempcpy_chk.S: Likewise. * sysdeps/i386/i686/multiarch/memrchr.S: Likewise. * sysdeps/i386/i686/multiarch/memset.S: Likewise. * sysdeps/i386/i686/multiarch/memset_chk.S: Likewise. * sysdeps/i386/i686/multiarch/rawmemchr.S: Likewise. * sysdeps/i386/i686/multiarch/strcasecmp.S: Likewise. * sysdeps/i386/i686/multiarch/strcat.S: Likewise. * sysdeps/i386/i686/multiarch/strchr.S: Likewise. * sysdeps/i386/i686/multiarch/strcmp.S: Likewise. * sysdeps/i386/i686/multiarch/strcpy.S: Likewise. * sysdeps/i386/i686/multiarch/strcspn.S: Likewise. * sysdeps/i386/i686/multiarch/strlen.S: Likewise. * sysdeps/i386/i686/multiarch/strncase.S: Likewise. * sysdeps/i386/i686/multiarch/strnlen.S: Likewise. * sysdeps/i386/i686/multiarch/strrchr.S: Likewise. * sysdeps/i386/i686/multiarch/strspn.S: Likewise. * sysdeps/i386/i686/multiarch/wcschr.S: Likewise. * sysdeps/i386/i686/multiarch/wcscmp.S: Likewise. * sysdeps/i386/i686/multiarch/wcscpy.S: Likewise. * sysdeps/i386/i686/multiarch/wcslen.S: Likewise. * sysdeps/i386/i686/multiarch/wcsrchr.S: Likewise. * sysdeps/i386/i686/multiarch/wmemcmp.S: Likewise.
2015-08-05Update x86_64 multiarch functions for <cpu-features.h>H.J. Lu
This patch updates x86_64 multiarch functions to use the newly defined HAS_CPU_FEATURE, HAS_ARCH_FEATURE and LOAD_RTLD_GLOBAL_RO_RDX from <cpu-features.h>. * sysdeps/x86_64/fpu/multiarch/e_asin.c: Replace HAS_XXX with HAS_CPU_FEATURE/HAS_ARCH_FEATURE (XXX). * sysdeps/x86_64/fpu/multiarch/e_atan2.c: Likewise. * sysdeps/x86_64/fpu/multiarch/e_exp.c: Likewise. * sysdeps/x86_64/fpu/multiarch/e_log.c: Likewise. * sysdeps/x86_64/fpu/multiarch/e_pow.c: Likewise. * sysdeps/x86_64/fpu/multiarch/s_atan.c: Likewise. * sysdeps/x86_64/fpu/multiarch/s_fma.c: Likewise. * sysdeps/x86_64/fpu/multiarch/s_fmaf.c: Likewise. * sysdeps/x86_64/fpu/multiarch/s_sin.c: Likewise. * sysdeps/x86_64/fpu/multiarch/s_tan.c: Likewise. * sysdeps/x86_64/fpu/multiarch/s_ceil.S: Use LOAD_RTLD_GLOBAL_RO_RDX and HAS_CPU_FEATURE (SSE4_1). * sysdeps/x86_64/fpu/multiarch/s_ceilf.S: Likewise. * sysdeps/x86_64/fpu/multiarch/s_floor.S: Likewise. * sysdeps/x86_64/fpu/multiarch/s_floorf.S: Likewise. * sysdeps/x86_64/fpu/multiarch/s_nearbyint.S : Likewise. * sysdeps/x86_64/fpu/multiarch/s_nearbyintf.S: Likewise. * sysdeps/x86_64/fpu/multiarch/s_rintf.S: Likewise. * sysdeps/x86_64/fpu/multiarch/s_rintf.S : Likewise. * sysdeps/x86_64/multiarch/ifunc-impl-list.c: Likewise. * sysdeps/x86_64/multiarch/sched_cpucount.c: Likewise. * sysdeps/x86_64/multiarch/strstr.c: Likewise. * sysdeps/x86_64/multiarch/memmove.c: Likewise. * sysdeps/x86_64/multiarch/memmove_chk.c: Likewise. * sysdeps/x86_64/multiarch/test-multiarch.c: Likewise. * sysdeps/x86_64/multiarch/memcmp.S: Remove __init_cpu_features call. Add LOAD_RTLD_GLOBAL_RO_RDX. Replace HAS_XXX with HAS_CPU_FEATURE/HAS_ARCH_FEATURE (XXX). * sysdeps/x86_64/multiarch/memcpy.S: Likewise. * sysdeps/x86_64/multiarch/memcpy_chk.S: Likewise. * sysdeps/x86_64/multiarch/mempcpy.S: Likewise. * sysdeps/x86_64/multiarch/mempcpy_chk.S: Likewise. * sysdeps/x86_64/multiarch/memset.S: Likewise. * sysdeps/x86_64/multiarch/memset_chk.S: Likewise. * sysdeps/x86_64/multiarch/strcat.S: Likewise. * sysdeps/x86_64/multiarch/strchr.S: Likewise. * sysdeps/x86_64/multiarch/strcmp.S: Likewise. * sysdeps/x86_64/multiarch/strcpy.S: Likewise. * sysdeps/x86_64/multiarch/strcspn.S: Likewise. * sysdeps/x86_64/multiarch/strspn.S: Likewise. * sysdeps/x86_64/multiarch/wcscpy.S: Likewise. * sysdeps/x86_64/multiarch/wmemcmp.S: Likewise.
2015-08-05Add _dl_x86_cpu_features to rtld_global in ld.soH.J. Lu
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.
2015-08-05Update version.h and include/features.h for 2.22 releaseglibc-2.22Carlos O'Donell
2015-08-04tilepro: fix warnings in sysdeps/tile/tilepro/bits/atomic.hChris Metcalf
Using a ({ }) structure avoids the "value computed is not used" that a simple () structure causes.
2015-08-04Properly terminate FDE in makecontext for ix86 (bug 18635)Andreas Schwab
2015-08-01Updated translations for 2.22.Carlos O'Donell
2015-08-01Deprecate the use of regexp.hZack Weinberg
<regexp.h> (not to be confused with <regex.h>) is an obsolete and frankly horrible regular expression-matching API. It was part of SVID but was withdrawn in Issue 5 (for reference, we're on Issue 7 now). It doesn't do anything you can't do with <regex.h>, and using it involves defining a bunch of macros before including the header. Moreover, the code in regexp.h that uses those macros has been buggy since its creation (in 1996) and no one has noticed, which indicates to me that there are no users. (Specifically, RETURN() is used in a whole bunch of cases where it should have been ERROR().) The header is given a warning and marked deprecated for 2.22. See: https://sourceware.org/ml/libc-alpha/2015-07/msg00862.html and https://sourceware.org/ml/libc-alpha/2015-07/msg00871.html.
2015-07-31Regenerate libc.pot for 2.22 release.Carlos O'Donell
2015-07-30Prevent runtime fail of SSE vector math tests on non SSE4.1 machine.Andrew Senkevich
[BZ #18740] * sysdeps/x86_64/fpu/Makefile (double-vlen2-arch-ext-cflags, float-vlen4-arch-ext-cflags): Removed. * math/Makefile (CFLAGS-test-double-vlen2-wrappers.c, CFLAGS-test-float-vlen4-wrappers.c): Likewise.
2015-07-30hppa: add bz entry for pthreadtypes.h fixMike Frysinger
2015-07-30hppa: fix pthreadtypes.h namespace failuresMike Frysinger
The conform tests flag the "aligned" symbol used inside the attributes, so rename it to __aligned__ like other headers.
2015-07-30hppa: Remove custom lowlevellock.h.Torvald Riegel
This untested patch removes the custom lowlevellock.h on hppa. It seems to contain an implementation equivalent to the generic lowlevellock.h.
2015-07-29hppa: sigaction.h: change sa_flags to an intMike Frysinger
This fixes the conform test for the sigaction.h header and makes it match all the other arches.
2015-07-29hppa: fix sysdep.h header setupMike Frysinger
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.
2015-07-29hppa: rewrite INLINE_SYSCALLMike Frysinger
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.
2015-07-29Extend local PLT reference checkH.J. Lu
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.
2015-07-29Added runtime check for AVX vector math tests.Andrew Senkevich
[BZ #18731] * sysdeps/x86_64/fpu/math-tests-arch.h: Added AVX runtime check. * sysdeps/x86_64/fpu/test-double-vlen4.c: Likewise. * sysdeps/x86_64/fpu/test-float-vlen8.c: Likewise.
2015-07-28ia64: drop __tls_get_addr from expected ld.so plt usageMike Frysinger
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.
2015-07-28ia64: atomic.h: fix atomic_exchange_and_add 64bit handlingMike Frysinger
Way back in 2005 the atomic_exchange_and_add function was cleaned up to avoid the explicit size checking and instead let gcc handle things itself. Unfortunately that change ended up leaving beyond a cast to int, even when the incoming value was a long. This has flown under the radar for a long time due to the function not being heavily used in the tree (especially as a full 64bit field), but a recent change to semaphores made some nptl tests fail reliably. This is due to the code packing two 32bit values into one 64bit variable (where the high 32bits contained the number of waiters), and then the whole variable being atomically updated between threads. On ia64, that meant we never atomically updated the count, so sometimes the sem_post would not wake up the waiters.
2015-07-28ia64: clean up old kernel headers cruftMike Frysinger
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.
2015-07-27pwd.h: revert __nonnull markings on putpwent [BZ #18641]Mike Frysinger
This function actually checks for NULL arguments and the API has been tenatively documented as using EINVAL in that case. We can debate leaving it this way, but it should be done after the pending release.
2015-07-27Mark bug 2981 (elf/tst-audit* fail on MIPS) as fixed.Joseph Myers
Changes in support of -fno-plt also cause the elf/tst-audit* tests to start passing on MIPS. This patch duly marks the relevant bug as fixed in ChangeLog and NEWS.
2015-07-27Fix spurious conform test failuresAndreas Schwab
2015-07-26Fixes extern protected data handling testcases elf/tst-protected1aChung-Lin Tang
and elf/tst-protected1b for Nios II.
2015-07-26Add #include <string.h> to nptl/tst-join7mod.c to silence GCC warnings.Chung-Lin Tang
2015-07-25Update Nios II ulps file.Chung-Lin Tang
2015-07-24Fix order of arguments to rt_sigprocmask syscall when setting the signal maskChung-Lin Tang
in setcontext/swapcontext.
2015-07-24NaCl: Remove bogus O_SHLOCK, O_EXLOCK definitions.Roland McGrath
2015-07-24Use IE model for static variables in libc.so, libpthread.so and rtldSiddhesh Poyarekar
The recently introduced TLS variables in the thread-local destructor implementation (__cxa_thread_atexit_impl) used the default GD access model, resulting in a call to __tls_get_addr. This causes a deadlock with recent changes to the way TLS is initialized because DTV allocations are delayed and hence despite knowing the offset to the variable inside its TLS block, the thread has to take the global rtld lock to safely update the TLS offset. This causes deadlocks when a thread is instantiated and joined inside a destructor of a dlopen'd DSO. The correct long term fix is to somehow not take the lock, but that will need a lot deeper change set to alter the way in which the big rtld lock is used. Instead, this patch just eliminates the call to __tls_get_addr for the thread-local variables inside libc.so, libpthread.so and rtld by building all of their units with -mtls-model=initial-exec. There were concerns that the static storage for TLS is limited and hence we should not be using it. Additionally, dynamically loaded modules may result in libc.so looking for this static storage pretty late in static binaries. Both concerns are valid when using TLSDESC since that is where one may attempt to allocate a TLS block from static storage for even those variables that are not IE. They're not very strong arguments for the traditional TLS model though, since it assumes that the static storage would be used sparingly and definitely not by default. Hence, for now this would only theoretically affect ARM architectures. The impact is hence limited to statically linked binaries that dlopen modules that in turn load libc.so, all that on arm hardware. It seems like a small enough impact to justify fixing the larger problem that currently affects everything everywhere. This still does not solve the original problem completely. That is, it is still possible to deadlock on the big rtld lock with a small tweak to the test case attached to this patch. That problem is however not a regression in 2.22 and hence could be tackled as a separate project. The test case is picked up as is from Alex's patch. This change has been tested to verify that it does not cause any issues on x86_64. ChangeLog: [BZ #18457] * nptl/Makefile (tests): New test case tst-join7. (modules-names): New test case module tst-join7mod. * nptl/tst-join7.c: New file. * nptl/tst-join7mod.c: New file. * Makeconfig (tls-model): Pass -ftls-model=initial-exec for all translation units in libc.so, libpthread.so and rtld.
2015-07-24Update powerpc-fpu libm-test-ulps.Adhemerval Zanella
2015-07-24Fixed several libmvec bugs found during testing on KNL hardware.Andrew Senkevich
AVX512 IFUNC implementations, implementations of wrappers to AVX2 versions and KNL expf implementation fixed. * sysdeps/x86_64/fpu/multiarch/svml_d_cos8_core.S: Fixed AVX512 IFUNC. * sysdeps/x86_64/fpu/multiarch/svml_d_exp8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_log8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_pow8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_sin8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_d_sincos8_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf16_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_expf16_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_logf16_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_powf16_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_sincosf16_core.S: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_sinf16_core.S: Likewise. * sysdeps/x86_64/fpu/svml_d_wrapper_impl.h: Fixed wrappers to AVX2. * sysdeps/x86_64/fpu/svml_s_wrapper_impl.h: Likewise. * sysdeps/x86_64/fpu/multiarch/svml_s_expf16_core_avx512.S: Fixed KNL implementation.
2015-07-24[ARM][BZ #17711] Fix extern protected data handlingSzabolcs Nagy
Fixes elf/tst-protected1a and elf/tst-protected1b tests. Depends on a gcc patch that makes protected visibility data non-local: https://gcc.gnu.org/ml/gcc-patches/2015-07/msg01871.html and on a binutils patch so R_*_GLOB_DAT relocs are used for it: https://sourceware.org/ml/binutils/2015-07/msg00247.html
2015-07-24[AArch64][BZ #17711] Fix extern protected data handlingSzabolcs Nagy
Fixes elf/tst-protected1a and elf/tst-protected1b tests. Depends on a gcc patch that makes protected visibility data non-local: https://gcc.gnu.org/ml/gcc-patches/2015-07/msg01871.html and on a binutils patch so R_*_GLOB_DAT relocs are used for it: https://sourceware.org/ml/binutils/2015-07/msg00246.html
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