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45ff34638f
glibc/sysdeps/x86
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H.J. Lu 45ff34638f x86: Add x86_64 to x86-64 HWCAP [BZ #22093] 
Before glibc 2.26, ld.so set dl_platform to "x86_64" and searched the
"x86_64" subdirectory when loading a shared library.  ld.so in glibc
2.26 was changed to set dl_platform to "haswell" or "xeon_phi", based
on supported ISAs.  This led to shared library loading failure for
shared libraries placed under the "x86_64" subdirectory.

This patch adds "x86_64" to x86-64 dl_hwcap so that ld.so will always
search the "x86_64" subdirectory when loading a shared library.

NB: We can't set x86-64 dl_platform to "x86-64" since ld.so will skip
the "haswell" and "xeon_phi" subdirectories on "haswell" and "xeon_phi"
machines.

Tested on i686 and x86-64.

	[BZ #22093]
	* sysdeps/x86/cpu-features.c (init_cpu_features): Initialize
	GLRO(dl_hwcap) to HWCAP_X86_64 for x86-64.
	* sysdeps/x86/dl-hwcap.h (HWCAP_COUNT): Updated.
	(HWCAP_IMPORTANT): Likewise.
	(HWCAP_X86_64): New enum.
	(HWCAP_X86_AVX512_1): Updated.
	* sysdeps/x86/dl-procinfo.c (_dl_x86_hwcap_flags): Add "x86_64".
	* sysdeps/x86_64/Makefile (tests): Add tst-x86_64-1.
	(modules-names): Add x86_64/tst-x86_64mod-1.
	(LDFLAGS-tst-x86_64mod-1.so): New.
	($(objpfx)tst-x86_64-1): Likewise.
	($(objpfx)x86_64/tst-x86_64mod-1.os): Likewise.
	(tst-x86_64-1-clean): Likewise.
	* sysdeps/x86_64/tst-x86_64-1.c: New file.
	* sysdeps/x86_64/tst-x86_64mod-1.c: Likewise.
2017-09-11 08:18:32 -07:00
..
bits Simplify HUGE_VAL definitions. 2017-08-31 15:50:50 +00:00
fpu hurd: fix libm link 2017-09-03 05:32:10 +02:00
nptl/bits Move shared pthread definitions to common headers 2017-05-09 17:49:17 -03:00
cacheinfo.c tunables: Add IFUNC selection and cache sizes 2017-06-20 08:37:28 -07:00
cpu-features-offsets.sym Remove x86 ifunc-defines.sym and rtld-global-offsets.sym 2016-05-11 05:51:39 -07:00
cpu-features.c x86: Add x86_64 to x86-64 HWCAP [BZ #22093] 2017-09-11 08:18:32 -07:00
cpu-features.h x86: Remove assembly versions of index_cpu_*/index_arch_* 2017-08-25 10:51:04 -07:00
cpu-tunables.c x86: Add IBT/SHSTK bits to cpu-features 2017-08-14 05:54:38 -07:00
dl-get-cpu-features.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
dl-hwcap.h x86: Add x86_64 to x86-64 HWCAP [BZ #22093] 2017-09-11 08:18:32 -07:00
dl-procinfo.c x86: Add x86_64 to x86-64 HWCAP [BZ #22093] 2017-09-11 08:18:32 -07:00
dl-procinfo.h x86: Set dl_platform and dl_hwcap from CPU features [BZ #21391] 2017-05-03 13:44:35 -07:00
dl-tunables.list x86: Rename glibc.tune.ifunc to glibc.tune.hwcaps 2017-06-21 10:21:37 -07:00
elide.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
float128-abi.h Add float128 support for x86_64, x86. 2017-06-26 22:02:24 +00:00
fpu_control.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
init-arch.h x86: Add macros to implement ifunce selection in C 2017-06-05 08:28:13 -07:00
libc-start.c Delay initialization of CPU features struct in static binaries 2017-05-31 06:38:33 +05:30
linkmap.h Rename bits/linkmap.h to linkmap.h (bug 14912). 2015-09-04 19:44:27 +00:00
Makefile Remove x86 ifunc-defines.sym and rtld-global-offsets.sym 2016-05-11 05:51:39 -07:00
math-tests.h Add float128 support for x86_64, x86. 2017-06-26 22:02:24 +00:00
string_private.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
tininess.h Use sysdeps/x86/tininess.h for i386 and x86_64 2012-10-30 20:38:31 -07:00
tst-get-cpu-features-static.c Add _dl_x86_cpu_features to rtld_global 2015-08-13 03:41:22 -07:00
tst-get-cpu-features.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
Versions Add _dl_x86_cpu_features to rtld_global 2015-08-13 03:41:22 -07:00