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| author | H.J. Lu <hjl.tools@gmail.com> | 2015-08-13 03:37:47 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2015-08-13 03:41:22 -0700 |
| commit | e2e4f56056adddc3c1efe676b40a4b4f2453103b (patch) | |
| tree | c9f54be6f6e8b57c8e58bdfac594aa3927378231 /sysdeps/i386/dl-machine.h | |
| parent | 63e952d9be87db68f0e4164d4a5760b32e77ebff (diff) | |
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.
Diffstat (limited to 'sysdeps/i386/dl-machine.h')
| -rw-r--r-- | sysdeps/i386/dl-machine.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sysdeps/i386/dl-machine.h b/sysdeps/i386/dl-machine.h index 04f9247bfa..4a28eb3765 100644 --- a/sysdeps/i386/dl-machine.h +++ b/sysdeps/i386/dl-machine.h @@ -25,6 +25,7 @@ #include <sysdep.h> #include <tls.h> #include <dl-tlsdesc.h> +#include <cpu-features.c> /* Return nonzero iff ELF header is compatible with the running host. */ static inline int __attribute__ ((unused)) @@ -235,6 +236,8 @@ dl_platform_init (void) if (GLRO(dl_platform) != NULL && *GLRO(dl_platform) == '\0') /* Avoid an empty string which would disturb us. */ GLRO(dl_platform) = NULL; + + init_cpu_features (&GLRO(dl_x86_cpu_features)); } static inline Elf32_Addr |