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SUSE:SLE-15-SP2:GA
glibc.22972
ld-so-hwcap-x86-64.patch
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File ld-so-hwcap-x86-64.patch of Package glibc.22972
2017-09-11 H.J. Lu <hongjiu.lu@intel.com> [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. Index: glibc-2.26/sysdeps/x86/cpu-features.c =================================================================== --- glibc-2.26.orig/sysdeps/x86/cpu-features.c +++ glibc-2.26/sysdeps/x86/cpu-features.c @@ -336,7 +336,6 @@ no_cpuid: /* Reuse dl_platform, dl_hwcap and dl_hwcap_mask for x86. */ GLRO(dl_platform) = NULL; - GLRO(dl_hwcap) = 0; #if !HAVE_TUNABLES && defined SHARED /* The glibc.tune.hwcap_mask tunable is initialized already, so no need to do this. */ @@ -344,6 +343,7 @@ no_cpuid: #endif #ifdef __x86_64__ + GLRO(dl_hwcap) = HWCAP_X86_64; if (cpu_features->kind == arch_kind_intel) { if (CPU_FEATURES_ARCH_P (cpu_features, AVX512F_Usable) @@ -374,6 +374,7 @@ no_cpuid: GLRO(dl_platform) = "haswell"; } #else + GLRO(dl_hwcap) = 0; if (CPU_FEATURES_CPU_P (cpu_features, SSE2)) GLRO(dl_hwcap) |= HWCAP_X86_SSE2; Index: glibc-2.26/sysdeps/x86/dl-hwcap.h =================================================================== --- glibc-2.26.orig/sysdeps/x86/dl-hwcap.h +++ glibc-2.26/sysdeps/x86/dl-hwcap.h @@ -24,15 +24,16 @@ # define HWCAP_PLATFORMS_START 0 # define HWCAP_PLATFORMS_COUNT 4 # define HWCAP_START 0 -# define HWCAP_COUNT 2 -# define HWCAP_IMPORTANT (HWCAP_X86_SSE2 | HWCAP_X86_AVX512_1) +# define HWCAP_COUNT 3 +# define HWCAP_IMPORTANT \ + (HWCAP_X86_SSE2 | HWCAP_X86_64 | HWCAP_X86_AVX512_1) #elif defined __x86_64__ /* For 64 bit, only cover x86-64 platforms and capabilities. */ # define HWCAP_PLATFORMS_START 2 # define HWCAP_PLATFORMS_COUNT 4 # define HWCAP_START 1 -# define HWCAP_COUNT 2 -# define HWCAP_IMPORTANT (HWCAP_X86_AVX512_1) +# define HWCAP_COUNT 3 +# define HWCAP_IMPORTANT (HWCAP_X86_64 | HWCAP_X86_AVX512_1) #else /* For 32 bit, only cover i586, i686 and SSE2. */ # define HWCAP_PLATFORMS_START 0 @@ -45,7 +46,8 @@ enum { HWCAP_X86_SSE2 = 1 << 0, - HWCAP_X86_AVX512_1 = 1 << 1 + HWCAP_X86_64 = 1 << 1, + HWCAP_X86_AVX512_1 = 1 << 2 }; static inline const char * Index: glibc-2.26/sysdeps/x86/dl-procinfo.c =================================================================== --- glibc-2.26.orig/sysdeps/x86/dl-procinfo.c +++ glibc-2.26/sysdeps/x86/dl-procinfo.c @@ -58,11 +58,11 @@ PROCINFO_CLASS struct cpu_features _dl_x #if !defined PROCINFO_DECL && defined SHARED ._dl_x86_hwcap_flags #else -PROCINFO_CLASS const char _dl_x86_hwcap_flags[2][9] +PROCINFO_CLASS const char _dl_x86_hwcap_flags[3][9] #endif #ifndef PROCINFO_DECL = { - "sse2", "avx512_1" + "sse2", "x86_64", "avx512_1" } #endif #if !defined SHARED || defined PROCINFO_DECL Index: glibc-2.26/sysdeps/x86_64/Makefile =================================================================== --- glibc-2.26.orig/sysdeps/x86_64/Makefile +++ glibc-2.26/sysdeps/x86_64/Makefile @@ -52,6 +52,12 @@ $(objpfx)tst-quad2pie: $(objpfx)tst-quad CFLAGS-tst-quad1pie.c = $(PIE-ccflag) CFLAGS-tst-quad2pie.c = $(PIE-ccflag) +tests += tst-x86_64-1 +modules-names += x86_64/tst-x86_64mod-1 +LDFLAGS-tst-x86_64mod-1.so = -Wl,-soname,tst-x86_64mod-1.so + +$(objpfx)tst-x86_64-1: $(objpfx)x86_64/tst-x86_64mod-1.so + tests += tst-audit3 tst-audit4 tst-audit5 tst-audit6 tst-audit7 \ tst-audit10 tst-sse tst-avx tst-avx512 test-extras += tst-audit4-aux tst-audit10-aux \ @@ -122,3 +128,14 @@ endif ifeq ($(subdir),csu) gen-as-const-headers += tlsdesc.sym rtld-offsets.sym endif + +$(objpfx)x86_64/tst-x86_64mod-1.os: $(objpfx)tst-x86_64mod-1.os + $(make-target-directory) + rm -f $@ + ln $< $@ + +do-tests-clean common-mostlyclean: tst-x86_64-1-clean + +.PHONY: tst-x86_64-1-clean +tst-x86_64-1-clean: + -rm -rf $(objpfx)x86_64 Index: glibc-2.26/sysdeps/x86_64/tst-x86_64-1.c =================================================================== --- /dev/null +++ glibc-2.26/sysdeps/x86_64/tst-x86_64-1.c @@ -0,0 +1,26 @@ +/* Test searching the "x86_64" directory for shared libraries. + Copyright (C) 2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +extern void foo (void); + +int +main (void) +{ + foo (); + return 0; +} Index: glibc-2.26/sysdeps/x86_64/tst-x86_64mod-1.c =================================================================== --- /dev/null +++ glibc-2.26/sysdeps/x86_64/tst-x86_64mod-1.c @@ -0,0 +1,22 @@ +/* Test searching the "x86_64" directory for shared libraries. + Copyright (C) 2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +void +foo (void) +{ +}
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