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* x86: Set dl_platform and dl_hwcap from CPU features [BZ #21391]H.J. Lu2017-05-031-20/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dl_platform and dl_hwcap are set from AT_PLATFORM and AT_HWCAP very early during startup. They are used by dynamic linker to determine platform and build an array of hardware capability names, which are added to search path when loading shared object. dl_platform and dl_hwcap are unused on x86-64. On i386, i386, i486, i586 and i686 platforms were supported and only SSE2 capability was used. On x86, usage of AT_PLATFORM and AT_HWCAP to determine platform and processor capabilities is obsolete since all information is available in dl_x86_cpu_features. This patch sets dl_platform and dl_hwcap from dl_x86_cpu_features in dynamic linker. On i386, the available plaforms are changed to i586 and i686 since i386 has been deprecated. On x86-64, the available plaforms are haswell, which is for Haswell class processors with BMI1, BMI2, LZCNT, MOVBE, POPCNT, AVX2 and FMA, and xeon_phi, which is for Xeon Phi class processors with AVX512F, AVX512CD, AVX512ER and AVX512PF. A capability, avx512_1, is also added to x86-64 for AVX512 ISAs: AVX512F, AVX512CD, AVX512BW, AVX512DQ and AVX512VL. [BZ #21391] * sysdeps/i386/dl-machine.h (dl_platform_init) [IS_IN (rtld)]: Only call init_cpu_features. [!IS_IN (rtld)]: Only set GLRO(dl_platform) to NULL if needed. * sysdeps/x86_64/dl-machine.h (dl_platform_init): Likewise. * sysdeps/i386/dl-procinfo.h: Removed. * sysdeps/unix/sysv/linux/i386/dl-procinfo.h: Don't include <sysdeps/i386/dl-procinfo.h> nor <ldsodefs.h>. Include <sysdeps/x86/dl-procinfo.h>. (_dl_procinfo): Replace _DL_HWCAP_COUNT with 32. * sysdeps/unix/sysv/linux/x86_64/dl-procinfo.h [!IS_IN (ldconfig)]: Include <sysdeps/x86/dl-procinfo.h> instead of <sysdeps/generic/dl-procinfo.h>. * sysdeps/x86/cpu-features.c: Include <dl-hwcap.h>. (init_cpu_features): Set dl_platform, dl_hwcap and dl_hwcap_mask. * sysdeps/x86/cpu-features.h (bit_cpu_LZCNT): New. (bit_cpu_MOVBE): Likewise. (bit_cpu_BMI1): Likewise. (bit_cpu_BMI2): Likewise. (index_cpu_BMI1): Likewise. (index_cpu_BMI2): Likewise. (index_cpu_LZCNT): Likewise. (index_cpu_MOVBE): Likewise. (index_cpu_POPCNT): Likewise. (reg_BMI1): Likewise. (reg_BMI2): Likewise. (reg_LZCNT): Likewise. (reg_MOVBE): Likewise. (reg_POPCNT): Likewise. * sysdeps/x86/dl-hwcap.h: New file. * sysdeps/x86/dl-procinfo.h: Likewise. * sysdeps/x86/dl-procinfo.c (_dl_x86_hwcap_flags): New. (_dl_x86_platforms): Likewise.
* Add sysdeps/x86/dl-procinfo.cH.J. Lu2017-04-101-15/+1
| | | | | | | | | | Add sysdeps/x86/dl-procinfo.c for x86 version of processor capability information to reduce duplication between i386 and x86_64 dl-procinfo.c. * sysdeps/i386/dl-procinfo.c: Include <sysdeps/x86/dl-procinfo.c>. * sysdeps/x86_64/dl-procinfo.c: Likewise. * sysdeps/x86/dl-procinfo.c: New file.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2017-01-011-1/+1
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* Update copyright dates with scripts/update-copyrights.Joseph Myers2016-01-041-1/+1
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* Add _dl_x86_cpu_features to rtld_globalH.J. Lu2015-08-131-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2015-01-021-1/+1
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* Update copyright notices with scripts/update-copyrightsAllan McRae2014-01-011-1/+1
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* Update copyright notices with scripts/update-copyrights.Joseph Myers2013-01-021-1/+1
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* Replace FSF snail mail address with URLs.Paul Eggert2012-02-091-3/+2
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* Update.Ulrich Drepper2004-07-101-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2004-07-10 Ulrich Drepper <drepper@redhat.com> * elf/ldconfig.c: Define PROCINFO_CLASS as static before including ldsodefs.h. * sysdeps/generic/ldsodefs.h: Only define PROCINFO_CLASS if it is not already defined. * sysdeps/i386/dl-procinfo.c: Define PROCINFO_CALLS only if not already defined. * elf/rtld.c (print_statistics): Mark with noinline attribute. * sysdeps/i386/dl-machine.h (elf_machine_rel): Mark with always_inline attribute. (elf_machine_rel_relative): Likewise. * include/string.h: Add libc_hidden_proto for __strtok_r and __strsep_g. * sysdeps/generic/strsep.c: Add libc_hidden_def. * sysdeps/generic/strtok_r.c: Likewise. * sysdeps/i386/strtok_r.S: Add alias for internal symbol. * sysdeps/i386/i686/strtok_r.S: Likewise. * sysdeps/x86_64/strtok_r.S: Likewise. 2004-07-09 Alexandre Oliva <aoliva@redhat.com> * inet/getnetgrent_r.c (internal_setnetgrent): Make it hidden instead of internal-linkage, such that we can alias to it. (internal_endnetgrent, internal_getnetgrent_r): Likewise.
* * sysdeps/mach/hurd/bits/libc-lock.hRoland McGrath2003-09-251-0/+83
(__libc_cleanup_push, __libc_cleanup_pop): New macros. 2003-08-01 Alfred M. Szmidt <ams@kemisten.nu> * sysdeps/i386/dl-procinfo.h: New file, contents taken from ... * sysdeps/unix/sysv/linux/i386/dl-procinfo.h: ... here. #include_next dl-procinfo.h to get them. (_DL_HWCAP_COUNT): Moved to sysdeps/i386/dl-procinfo.h. (_DL_PLATFORMS_COUNT): Likewise. (_DL_FIRST_PLATFORM): Likewise. (_DL_HWCAP_PLATFORM): Likewise. (HWCAP_I386_FPU, HWCAP_I386_VME, HWCAP_I386_DE, HWCAP_I386_PSE, HWCAP_I386_TSC, HWCAP_I386_MSR, HWCAP_I386_PAE, HWCAP_I386_MCE, HWCAP_I386_CX8, HWCAP_I386_APIC, HWCAP_I386_SEP, HWCAP_I386_MTRR, HWCAP_I386_PGE, HWCAP_I386_MCA, HWCAP_I386_CMOV, HWCAP_I386_FCMOV, HWCAP_I386_MMX, HWCAP_I386_OSFXSR, HWCAP_I386_XMM, HWCAP_I386_XMM2, HWCAP_I386_AMD3D, HWCAP_IMPORTANT): Likewise. (_DL_PROCINFO_H_): Likewise. (_dl_hwcap_string, _dl_platform_string, _dl_string_hwcap): Likewise. (_dl_string_platform): Likewise. * sysdeps/unix/sysv/linux/i386/dl-procinfo.c: Moved to ... * sysdeps/i386/dl-procinfo.c: ... here, new file.
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