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e2e4f56056
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.
38 lines
1.2 KiB
Makefile
38 lines
1.2 KiB
Makefile
ifeq ($(subdir),csu)
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tests += test-multiarch
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gen-as-const-headers += ifunc-defines.sym
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endif
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ifeq ($(subdir),string)
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sysdep_routines += strncat-c stpncpy-c strncpy-c strcmp-ssse3 \
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strcmp-sse2-unaligned strncmp-ssse3 \
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memcmp-sse4 memcpy-ssse3 \
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memcpy-sse2-unaligned mempcpy-ssse3 \
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memmove-ssse3 memcpy-ssse3-back mempcpy-ssse3-back \
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memmove-avx-unaligned memcpy-avx-unaligned mempcpy-avx-unaligned \
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memmove-ssse3-back strcasecmp_l-ssse3 \
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strncase_l-ssse3 strcat-ssse3 strncat-ssse3\
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strcpy-ssse3 strncpy-ssse3 stpcpy-ssse3 stpncpy-ssse3 \
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strcpy-sse2-unaligned strncpy-sse2-unaligned \
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stpcpy-sse2-unaligned stpncpy-sse2-unaligned \
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strcat-sse2-unaligned strncat-sse2-unaligned \
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strchr-sse2-no-bsf memcmp-ssse3 strstr-sse2-unaligned
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ifeq (yes,$(config-cflags-sse4))
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sysdep_routines += strcspn-c strpbrk-c strspn-c varshift
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CFLAGS-varshift.c += -msse4
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CFLAGS-strcspn-c.c += -msse4
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CFLAGS-strpbrk-c.c += -msse4
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CFLAGS-strspn-c.c += -msse4
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endif
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ifeq (yes,$(config-cflags-avx2))
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sysdep_routines += memset-avx2
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endif
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endif
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ifeq ($(subdir),wcsmbs)
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sysdep_routines += wmemcmp-sse4 wmemcmp-ssse3 wmemcmp-c wcscpy-ssse3 wcscpy-c
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endif
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