|
 |
bca718 |
We add back Prefer_SSE_for_memop since we still need it for all of the
|
|
|
bca718 |
existing era implementations for RHEL 7.3. To remove it would require
|
|
|
bca718 |
a more wholesale backport of optmized routines.
|
|
|
bca718 |
|
|
|
bca718 |
commit e2e4f56056adddc3c1efe676b40a4b4f2453103b
|
|
|
bca718 |
Author: H.J. Lu <hjl.tools@gmail.com>
|
|
|
bca718 |
Date: Thu Aug 13 03:37:47 2015 -0700
|
|
|
bca718 |
|
|
|
bca718 |
Add _dl_x86_cpu_features to rtld_global
|
|
|
bca718 |
|
|
|
bca718 |
This patch adds _dl_x86_cpu_features to rtld_global in x86 ld.so
|
|
|
bca718 |
and initializes it early before __libc_start_main is called so that
|
|
|
bca718 |
cpu_features is always available when it is used and we can avoid
|
|
|
bca718 |
calling __init_cpu_features in IFUNC selectors.
|
|
|
bca718 |
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/i386/dl-machine.h
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- glibc-2.17-c758a686.orig/sysdeps/i386/dl-machine.h
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/i386/dl-machine.h
|
|
|
bca718 |
@@ -25,6 +25,7 @@
|
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|
bca718 |
#include <sysdep.h>
|
|
|
bca718 |
#include <tls.h>
|
|
|
bca718 |
#include <dl-tlsdesc.h>
|
|
|
bca718 |
+#include <cpu-features.c>
|
|
|
bca718 |
|
|
|
bca718 |
/* Return nonzero iff ELF header is compatible with the running host. */
|
|
|
bca718 |
static inline int __attribute__ ((unused))
|
|
|
bca718 |
@@ -266,6 +267,8 @@ dl_platform_init (void)
|
|
|
bca718 |
if (GLRO(dl_platform) != NULL && *GLRO(dl_platform) == '\0')
|
|
|
bca718 |
/* Avoid an empty string which would disturb us. */
|
|
|
bca718 |
GLRO(dl_platform) = NULL;
|
|
|
bca718 |
+
|
|
|
bca718 |
+ init_cpu_features (&GLRO(dl_x86_cpu_features));
|
|
|
bca718 |
}
|
|
|
bca718 |
|
|
|
bca718 |
static inline Elf32_Addr
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/i386/dl-procinfo.c
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- glibc-2.17-c758a686.orig/sysdeps/i386/dl-procinfo.c
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/i386/dl-procinfo.c
|
|
|
bca718 |
@@ -43,6 +43,22 @@
|
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|
bca718 |
# define PROCINFO_CLASS
|
|
|
bca718 |
#endif
|
|
|
bca718 |
|
|
|
bca718 |
+#if !IS_IN (ldconfig)
|
|
|
bca718 |
+# if !defined PROCINFO_DECL && defined SHARED
|
|
|
bca718 |
+ ._dl_x86_cpu_features
|
|
|
bca718 |
+# else
|
|
|
bca718 |
+PROCINFO_CLASS struct cpu_features _dl_x86_cpu_features
|
|
|
bca718 |
+# endif
|
|
|
bca718 |
+# ifndef PROCINFO_DECL
|
|
|
bca718 |
+= { }
|
|
|
bca718 |
+# endif
|
|
|
bca718 |
+# if !defined SHARED || defined PROCINFO_DECL
|
|
|
bca718 |
+;
|
|
|
bca718 |
+# else
|
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|
bca718 |
+,
|
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bca718 |
+# endif
|
|
|
bca718 |
+#endif
|
|
|
bca718 |
+
|
|
|
bca718 |
#if !defined PROCINFO_DECL && defined SHARED
|
|
|
bca718 |
._dl_x86_cap_flags
|
|
|
bca718 |
#else
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/i386/i686/cacheinfo.c
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- glibc-2.17-c758a686.orig/sysdeps/i386/i686/cacheinfo.c
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/i386/i686/cacheinfo.c
|
|
|
bca718 |
@@ -8,6 +8,5 @@
|
|
|
bca718 |
#define __x86_64_raw_shared_cache_size_half __x86_raw_shared_cache_size_half
|
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|
bca718 |
|
|
|
bca718 |
#define DISABLE_PREFETCHW
|
|
|
bca718 |
-#define DISABLE_PREFERRED_MEMORY_INSTRUCTION
|
|
|
bca718 |
|
|
|
bca718 |
#include <sysdeps/x86_64/cacheinfo.c>
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/i386/i686/multiarch/Makefile
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- glibc-2.17-c758a686.orig/sysdeps/i386/i686/multiarch/Makefile
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/i386/i686/multiarch/Makefile
|
|
|
bca718 |
@@ -1,5 +1,4 @@
|
|
|
bca718 |
ifeq ($(subdir),csu)
|
|
|
bca718 |
-aux += init-arch
|
|
|
bca718 |
tests += test-multiarch
|
|
|
bca718 |
gen-as-const-headers += ifunc-defines.sym
|
|
|
bca718 |
endif
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/i386/i686/multiarch/Versions
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- glibc-2.17-c758a686.orig/sysdeps/i386/i686/multiarch/Versions
|
|
|
bca718 |
+++ /dev/null
|
|
|
bca718 |
@@ -1,5 +0,0 @@
|
|
|
bca718 |
-libc {
|
|
|
bca718 |
- GLIBC_PRIVATE {
|
|
|
bca718 |
- __get_cpu_features;
|
|
|
bca718 |
- }
|
|
|
bca718 |
-}
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/i386/i686/multiarch/ifunc-defines.sym
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- glibc-2.17-c758a686.orig/sysdeps/i386/i686/multiarch/ifunc-defines.sym
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/i386/i686/multiarch/ifunc-defines.sym
|
|
|
bca718 |
@@ -4,7 +4,6 @@
|
|
|
bca718 |
--
|
|
|
bca718 |
|
|
|
bca718 |
CPU_FEATURES_SIZE sizeof (struct cpu_features)
|
|
|
bca718 |
-KIND_OFFSET offsetof (struct cpu_features, kind)
|
|
|
bca718 |
CPUID_OFFSET offsetof (struct cpu_features, cpuid)
|
|
|
bca718 |
CPUID_SIZE sizeof (struct cpuid_registers)
|
|
|
bca718 |
CPUID_EAX_OFFSET offsetof (struct cpuid_registers, eax)
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/i386/ldsodefs.h
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- glibc-2.17-c758a686.orig/sysdeps/i386/ldsodefs.h
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/i386/ldsodefs.h
|
|
|
bca718 |
@@ -20,6 +20,7 @@
|
|
|
bca718 |
#define _I386_LDSODEFS_H 1
|
|
|
bca718 |
|
|
|
bca718 |
#include <elf.h>
|
|
|
bca718 |
+#include <cpu-features.h>
|
|
|
bca718 |
|
|
|
bca718 |
struct La_i86_regs;
|
|
|
bca718 |
struct La_i86_retval;
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- glibc-2.17-c758a686.orig/sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c
|
|
|
bca718 |
@@ -1,5 +1,5 @@
|
|
|
bca718 |
#if IS_IN (ldconfig)
|
|
|
bca718 |
# include <sysdeps/i386/dl-procinfo.c>
|
|
|
bca718 |
#else
|
|
|
bca718 |
-# include <sysdeps/generic/dl-procinfo.c>
|
|
|
bca718 |
+# include <sysdeps/x86_64/dl-procinfo.c>
|
|
|
bca718 |
#endif
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/x86/Makefile
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- glibc-2.17-c758a686.orig/sysdeps/x86/Makefile
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/x86/Makefile
|
|
|
bca718 |
@@ -7,3 +7,14 @@ $(objpfx)tst-xmmymmzmm.out: ../sysdeps/x
|
|
|
bca718 |
@echo "Checking ld.so for SSE register use. This will take a few seconds..."
|
|
|
bca718 |
$(SHELL) $< $(objpfx) '$(NM)' '$(OBJDUMP)' '$(READELF)' > $@
|
|
|
bca718 |
endif
|
|
|
bca718 |
+
|
|
|
bca718 |
+ifeq ($(subdir),csu)
|
|
|
bca718 |
+gen-as-const-headers += cpu-features-offsets.sym rtld-global-offsets.sym
|
|
|
bca718 |
+endif
|
|
|
bca718 |
+
|
|
|
bca718 |
+ifeq ($(subdir),elf)
|
|
|
bca718 |
+sysdep-dl-routines += dl-get-cpu-features
|
|
|
bca718 |
+
|
|
|
bca718 |
+tests += tst-get-cpu-features
|
|
|
bca718 |
+tests-static += tst-get-cpu-features-static
|
|
|
bca718 |
+endif
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/x86/Versions
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- /dev/null
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/x86/Versions
|
|
|
bca718 |
@@ -0,0 +1,5 @@
|
|
|
bca718 |
+ld {
|
|
|
bca718 |
+ GLIBC_PRIVATE {
|
|
|
bca718 |
+ __get_cpu_features;
|
|
|
bca718 |
+ }
|
|
|
bca718 |
+}
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/x86/cpu-features-offsets.sym
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- /dev/null
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/x86/cpu-features-offsets.sym
|
|
|
bca718 |
@@ -0,0 +1,7 @@
|
|
|
bca718 |
+#define SHARED 1
|
|
|
bca718 |
+
|
|
|
bca718 |
+#include <ldsodefs.h>
|
|
|
bca718 |
+
|
|
|
bca718 |
+#define rtld_global_ro_offsetof(mem) offsetof (struct rtld_global_ro, mem)
|
|
|
bca718 |
+
|
|
|
bca718 |
+RTLD_GLOBAL_RO_DL_X86_CPU_FEATURES_OFFSET rtld_global_ro_offsetof (_dl_x86_cpu_features)
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/x86/cpu-features.c
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- /dev/null
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/x86/cpu-features.c
|
|
|
bca718 |
@@ -0,0 +1,213 @@
|
|
|
bca718 |
+/* Initialize CPU feature data.
|
|
|
bca718 |
+ This file is part of the GNU C Library.
|
|
|
bca718 |
+ Copyright (C) 2008-2015 Free Software Foundation, Inc.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ The GNU C Library is free software; you can redistribute it and/or
|
|
|
bca718 |
+ modify it under the terms of the GNU Lesser General Public
|
|
|
bca718 |
+ License as published by the Free Software Foundation; either
|
|
|
bca718 |
+ version 2.1 of the License, or (at your option) any later version.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
|
bca718 |
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
bca718 |
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
bca718 |
+ Lesser General Public License for more details.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ You should have received a copy of the GNU Lesser General Public
|
|
|
bca718 |
+ License along with the GNU C Library; if not, see
|
|
|
bca718 |
+ <http://www.gnu.org/licenses/>. */
|
|
|
bca718 |
+
|
|
|
bca718 |
+#include <cpuid.h>
|
|
|
bca718 |
+#include <cpu-features.h>
|
|
|
bca718 |
+
|
|
|
bca718 |
+static inline void
|
|
|
bca718 |
+get_common_indeces (struct cpu_features *cpu_features,
|
|
|
bca718 |
+ unsigned int *family, unsigned int *model)
|
|
|
bca718 |
+{
|
|
|
bca718 |
+ unsigned int eax;
|
|
|
bca718 |
+ __cpuid (1, eax, cpu_features->cpuid[COMMON_CPUID_INDEX_1].ebx,
|
|
|
bca718 |
+ cpu_features->cpuid[COMMON_CPUID_INDEX_1].ecx,
|
|
|
bca718 |
+ cpu_features->cpuid[COMMON_CPUID_INDEX_1].edx);
|
|
|
bca718 |
+ GLRO(dl_x86_cpu_features).cpuid[COMMON_CPUID_INDEX_1].eax = eax;
|
|
|
bca718 |
+ *family = (eax >> 8) & 0x0f;
|
|
|
bca718 |
+ *model = (eax >> 4) & 0x0f;
|
|
|
bca718 |
+}
|
|
|
bca718 |
+
|
|
|
bca718 |
+static inline void
|
|
|
bca718 |
+init_cpu_features (struct cpu_features *cpu_features)
|
|
|
bca718 |
+{
|
|
|
bca718 |
+ unsigned int ebx, ecx, edx;
|
|
|
bca718 |
+ unsigned int family = 0;
|
|
|
bca718 |
+ unsigned int model = 0;
|
|
|
bca718 |
+ enum cpu_features_kind kind;
|
|
|
bca718 |
+
|
|
|
bca718 |
+ __cpuid (0, cpu_features->max_cpuid, ebx, ecx, edx);
|
|
|
bca718 |
+
|
|
|
bca718 |
+ /* This spells out "GenuineIntel". */
|
|
|
bca718 |
+ if (ebx == 0x756e6547 && ecx == 0x6c65746e && edx == 0x49656e69)
|
|
|
bca718 |
+ {
|
|
|
bca718 |
+ kind = arch_kind_intel;
|
|
|
bca718 |
+
|
|
|
bca718 |
+ get_common_indeces (cpu_features, &family, &model);
|
|
|
bca718 |
+
|
|
|
bca718 |
+ /* Intel processors prefer SSE instruction for memory/string
|
|
|
bca718 |
+ routines if they are available. */
|
|
|
bca718 |
+ cpu_features->feature[index_Prefer_SSE_for_memop]
|
|
|
bca718 |
+ |= bit_Prefer_SSE_for_memop;
|
|
|
bca718 |
+
|
|
|
bca718 |
+ unsigned int eax = cpu_features->cpuid[COMMON_CPUID_INDEX_1].eax;
|
|
|
bca718 |
+ unsigned int extended_family = (eax >> 20) & 0xff;
|
|
|
bca718 |
+ unsigned int extended_model = (eax >> 12) & 0xf0;
|
|
|
bca718 |
+ if (family == 0x0f)
|
|
|
bca718 |
+ {
|
|
|
bca718 |
+ family += extended_family;
|
|
|
bca718 |
+ model += extended_model;
|
|
|
bca718 |
+ }
|
|
|
bca718 |
+ else if (family == 0x06)
|
|
|
bca718 |
+ {
|
|
|
bca718 |
+ ecx = cpu_features->cpuid[COMMON_CPUID_INDEX_1].ecx;
|
|
|
bca718 |
+ model += extended_model;
|
|
|
bca718 |
+ switch (model)
|
|
|
bca718 |
+ {
|
|
|
bca718 |
+ case 0x1c:
|
|
|
bca718 |
+ case 0x26:
|
|
|
bca718 |
+ /* BSF is slow on Atom. */
|
|
|
bca718 |
+ cpu_features->feature[index_Slow_BSF] |= bit_Slow_BSF;
|
|
|
bca718 |
+ break;
|
|
|
bca718 |
+
|
|
|
bca718 |
+ case 0x37:
|
|
|
bca718 |
+ case 0x4a:
|
|
|
bca718 |
+ case 0x4d:
|
|
|
bca718 |
+ case 0x5a:
|
|
|
bca718 |
+ case 0x5d:
|
|
|
bca718 |
+ /* Unaligned load versions are faster than SSSE3
|
|
|
bca718 |
+ on Silvermont. */
|
|
|
bca718 |
+#if index_Fast_Unaligned_Load != index_Prefer_PMINUB_for_stringop
|
|
|
bca718 |
+# error index_Fast_Unaligned_Load != index_Prefer_PMINUB_for_stringop
|
|
|
bca718 |
+#endif
|
|
|
bca718 |
+#if index_Fast_Unaligned_Load != index_Slow_SSE4_2
|
|
|
bca718 |
+# error index_Fast_Unaligned_Load != index_Slow_SSE4_2
|
|
|
bca718 |
+#endif
|
|
|
bca718 |
+ cpu_features->feature[index_Fast_Unaligned_Load]
|
|
|
bca718 |
+ |= (bit_Fast_Unaligned_Load
|
|
|
bca718 |
+ | bit_Prefer_PMINUB_for_stringop
|
|
|
bca718 |
+ | bit_Slow_SSE4_2);
|
|
|
bca718 |
+ break;
|
|
|
bca718 |
+
|
|
|
bca718 |
+ default:
|
|
|
bca718 |
+ /* Unknown family 0x06 processors. Assuming this is one
|
|
|
bca718 |
+ of Core i3/i5/i7 processors if AVX is available. */
|
|
|
bca718 |
+ if ((ecx & bit_AVX) == 0)
|
|
|
bca718 |
+ break;
|
|
|
bca718 |
+
|
|
|
bca718 |
+ case 0x1a:
|
|
|
bca718 |
+ case 0x1e:
|
|
|
bca718 |
+ case 0x1f:
|
|
|
bca718 |
+ case 0x25:
|
|
|
bca718 |
+ case 0x2c:
|
|
|
bca718 |
+ case 0x2e:
|
|
|
bca718 |
+ case 0x2f:
|
|
|
bca718 |
+ /* Rep string instructions, copy backward, unaligned loads
|
|
|
bca718 |
+ and pminub are fast on Intel Core i3, i5 and i7. */
|
|
|
bca718 |
+#if index_Fast_Rep_String != index_Fast_Copy_Backward
|
|
|
bca718 |
+# error index_Fast_Rep_String != index_Fast_Copy_Backward
|
|
|
bca718 |
+#endif
|
|
|
bca718 |
+#if index_Fast_Rep_String != index_Fast_Unaligned_Load
|
|
|
bca718 |
+# error index_Fast_Rep_String != index_Fast_Unaligned_Load
|
|
|
bca718 |
+#endif
|
|
|
bca718 |
+#if index_Fast_Rep_String != index_Prefer_PMINUB_for_stringop
|
|
|
bca718 |
+# error index_Fast_Rep_String != index_Prefer_PMINUB_for_stringop
|
|
|
bca718 |
+#endif
|
|
|
bca718 |
+ cpu_features->feature[index_Fast_Rep_String]
|
|
|
bca718 |
+ |= (bit_Fast_Rep_String
|
|
|
bca718 |
+ | bit_Fast_Copy_Backward
|
|
|
bca718 |
+ | bit_Fast_Unaligned_Load
|
|
|
bca718 |
+ | bit_Prefer_PMINUB_for_stringop);
|
|
|
bca718 |
+ break;
|
|
|
bca718 |
+ }
|
|
|
bca718 |
+ }
|
|
|
bca718 |
+ }
|
|
|
bca718 |
+ /* This spells out "AuthenticAMD". */
|
|
|
bca718 |
+ else if (ebx == 0x68747541 && ecx == 0x444d4163 && edx == 0x69746e65)
|
|
|
bca718 |
+ {
|
|
|
bca718 |
+ kind = arch_kind_amd;
|
|
|
bca718 |
+
|
|
|
bca718 |
+ get_common_indeces (cpu_features, &family, &model);
|
|
|
bca718 |
+
|
|
|
bca718 |
+ ecx = cpu_features->cpuid[COMMON_CPUID_INDEX_1].ecx;
|
|
|
bca718 |
+
|
|
|
bca718 |
+ /* AMD processors prefer SSE instructions for memory/string routines
|
|
|
bca718 |
+ if they are available, otherwise they prefer integer instructions. */
|
|
|
bca718 |
+ if ((ecx & 0x200))
|
|
|
bca718 |
+ cpu_features->feature[index_Prefer_SSE_for_memop]
|
|
|
bca718 |
+ |= bit_Prefer_SSE_for_memop;
|
|
|
bca718 |
+
|
|
|
bca718 |
+ unsigned int eax;
|
|
|
bca718 |
+ __cpuid (0x80000000, eax, ebx, ecx, edx);
|
|
|
bca718 |
+ if (eax >= 0x80000001)
|
|
|
bca718 |
+ __cpuid (0x80000001,
|
|
|
bca718 |
+ cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].eax,
|
|
|
bca718 |
+ cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].ebx,
|
|
|
bca718 |
+ cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].ecx,
|
|
|
bca718 |
+ cpu_features->cpuid[COMMON_CPUID_INDEX_80000001].edx);
|
|
|
bca718 |
+ }
|
|
|
bca718 |
+ else
|
|
|
bca718 |
+ kind = arch_kind_other;
|
|
|
bca718 |
+
|
|
|
bca718 |
+ if (cpu_features->max_cpuid >= 7)
|
|
|
bca718 |
+ __cpuid_count (7, 0,
|
|
|
bca718 |
+ cpu_features->cpuid[COMMON_CPUID_INDEX_7].eax,
|
|
|
bca718 |
+ cpu_features->cpuid[COMMON_CPUID_INDEX_7].ebx,
|
|
|
bca718 |
+ cpu_features->cpuid[COMMON_CPUID_INDEX_7].ecx,
|
|
|
bca718 |
+ cpu_features->cpuid[COMMON_CPUID_INDEX_7].edx);
|
|
|
bca718 |
+
|
|
|
bca718 |
+ /* Can we call xgetbv? */
|
|
|
bca718 |
+ if (HAS_CPU_FEATURE (OSXSAVE))
|
|
|
bca718 |
+ {
|
|
|
bca718 |
+ unsigned int xcrlow;
|
|
|
bca718 |
+ unsigned int xcrhigh;
|
|
|
bca718 |
+ asm ("xgetbv" : "=a" (xcrlow), "=d" (xcrhigh) : "c" (0));
|
|
|
bca718 |
+ /* Is YMM and XMM state usable? */
|
|
|
bca718 |
+ if ((xcrlow & (bit_YMM_state | bit_XMM_state)) ==
|
|
|
bca718 |
+ (bit_YMM_state | bit_XMM_state))
|
|
|
bca718 |
+ {
|
|
|
bca718 |
+ /* Determine if AVX is usable. */
|
|
|
bca718 |
+ if (HAS_CPU_FEATURE (AVX))
|
|
|
bca718 |
+ cpu_features->feature[index_AVX_Usable] |= bit_AVX_Usable;
|
|
|
bca718 |
+#if index_AVX2_Usable != index_AVX_Fast_Unaligned_Load
|
|
|
bca718 |
+# error index_AVX2_Usable != index_AVX_Fast_Unaligned_Load
|
|
|
bca718 |
+#endif
|
|
|
bca718 |
+ /* Determine if AVX2 is usable. Unaligned load with 256-bit
|
|
|
bca718 |
+ AVX registers are faster on processors with AVX2. */
|
|
|
bca718 |
+ if (HAS_CPU_FEATURE (AVX2))
|
|
|
bca718 |
+ cpu_features->feature[index_AVX2_Usable]
|
|
|
bca718 |
+ |= bit_AVX2_Usable | bit_AVX_Fast_Unaligned_Load;
|
|
|
bca718 |
+ /* Check if OPMASK state, upper 256-bit of ZMM0-ZMM15 and
|
|
|
bca718 |
+ ZMM16-ZMM31 state are enabled. */
|
|
|
bca718 |
+ if ((xcrlow & (bit_Opmask_state | bit_ZMM0_15_state
|
|
|
bca718 |
+ | bit_ZMM16_31_state)) ==
|
|
|
bca718 |
+ (bit_Opmask_state | bit_ZMM0_15_state | bit_ZMM16_31_state))
|
|
|
bca718 |
+ {
|
|
|
bca718 |
+ /* Determine if AVX512F is usable. */
|
|
|
bca718 |
+ if (HAS_CPU_FEATURE (AVX512F))
|
|
|
bca718 |
+ {
|
|
|
bca718 |
+ cpu_features->feature[index_AVX512F_Usable]
|
|
|
bca718 |
+ |= bit_AVX512F_Usable;
|
|
|
bca718 |
+ /* Determine if AVX512DQ is usable. */
|
|
|
bca718 |
+ if (HAS_CPU_FEATURE (AVX512DQ))
|
|
|
bca718 |
+ cpu_features->feature[index_AVX512DQ_Usable]
|
|
|
bca718 |
+ |= bit_AVX512DQ_Usable;
|
|
|
bca718 |
+ }
|
|
|
bca718 |
+ }
|
|
|
bca718 |
+ /* Determine if FMA is usable. */
|
|
|
bca718 |
+ if (HAS_CPU_FEATURE (FMA))
|
|
|
bca718 |
+ cpu_features->feature[index_FMA_Usable] |= bit_FMA_Usable;
|
|
|
bca718 |
+ /* Determine if FMA4 is usable. */
|
|
|
bca718 |
+ if (HAS_CPU_FEATURE (FMA4))
|
|
|
bca718 |
+ cpu_features->feature[index_FMA4_Usable] |= bit_FMA4_Usable;
|
|
|
bca718 |
+ }
|
|
|
bca718 |
+ }
|
|
|
bca718 |
+
|
|
|
bca718 |
+ cpu_features->family = family;
|
|
|
bca718 |
+ cpu_features->model = model;
|
|
|
bca718 |
+ cpu_features->kind = kind;
|
|
|
bca718 |
+}
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/x86/cpu-features.h
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- /dev/null
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/x86/cpu-features.h
|
|
|
bca718 |
@@ -0,0 +1,273 @@
|
|
|
bca718 |
+/* This file is part of the GNU C Library.
|
|
|
bca718 |
+ Copyright (C) 2008-2015 Free Software Foundation, Inc.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ The GNU C Library is free software; you can redistribute it and/or
|
|
|
bca718 |
+ modify it under the terms of the GNU Lesser General Public
|
|
|
bca718 |
+ License as published by the Free Software Foundation; either
|
|
|
bca718 |
+ version 2.1 of the License, or (at your option) any later version.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
|
bca718 |
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
bca718 |
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
bca718 |
+ Lesser General Public License for more details.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ You should have received a copy of the GNU Lesser General Public
|
|
|
bca718 |
+ License along with the GNU C Library; if not, see
|
|
|
bca718 |
+ <http://www.gnu.org/licenses/>. */
|
|
|
bca718 |
+
|
|
|
bca718 |
+#ifndef cpu_features_h
|
|
|
bca718 |
+#define cpu_features_h
|
|
|
bca718 |
+
|
|
|
bca718 |
+#define bit_Fast_Rep_String (1 << 0)
|
|
|
bca718 |
+#define bit_Fast_Copy_Backward (1 << 1)
|
|
|
bca718 |
+#define bit_Slow_BSF (1 << 2)
|
|
|
bca718 |
+#define bit_Prefer_SSE_for_memop (1 << 3)
|
|
|
bca718 |
+#define bit_Fast_Unaligned_Load (1 << 4)
|
|
|
bca718 |
+#define bit_Prefer_PMINUB_for_stringop (1 << 5)
|
|
|
bca718 |
+#define bit_AVX_Usable (1 << 6)
|
|
|
bca718 |
+#define bit_FMA_Usable (1 << 7)
|
|
|
bca718 |
+#define bit_FMA4_Usable (1 << 8)
|
|
|
bca718 |
+#define bit_Slow_SSE4_2 (1 << 9)
|
|
|
bca718 |
+#define bit_AVX2_Usable (1 << 10)
|
|
|
bca718 |
+#define bit_AVX_Fast_Unaligned_Load (1 << 11)
|
|
|
bca718 |
+#define bit_AVX512F_Usable (1 << 12)
|
|
|
bca718 |
+#define bit_AVX512DQ_Usable (1 << 13)
|
|
|
bca718 |
+
|
|
|
bca718 |
+/* CPUID Feature flags. */
|
|
|
bca718 |
+
|
|
|
bca718 |
+/* COMMON_CPUID_INDEX_1. */
|
|
|
bca718 |
+#define bit_SSE2 (1 << 26)
|
|
|
bca718 |
+#define bit_SSSE3 (1 << 9)
|
|
|
bca718 |
+#define bit_SSE4_1 (1 << 19)
|
|
|
bca718 |
+#define bit_SSE4_2 (1 << 20)
|
|
|
bca718 |
+#define bit_OSXSAVE (1 << 27)
|
|
|
bca718 |
+#define bit_AVX (1 << 28)
|
|
|
bca718 |
+#define bit_POPCOUNT (1 << 23)
|
|
|
bca718 |
+#define bit_FMA (1 << 12)
|
|
|
bca718 |
+#define bit_FMA4 (1 << 16)
|
|
|
bca718 |
+
|
|
|
bca718 |
+/* COMMON_CPUID_INDEX_7. */
|
|
|
bca718 |
+#define bit_RTM (1 << 11)
|
|
|
bca718 |
+#define bit_AVX2 (1 << 5)
|
|
|
bca718 |
+#define bit_AVX512F (1 << 16)
|
|
|
bca718 |
+#define bit_AVX512DQ (1 << 17)
|
|
|
bca718 |
+
|
|
|
bca718 |
+/* XCR0 Feature flags. */
|
|
|
bca718 |
+#define bit_XMM_state (1 << 1)
|
|
|
bca718 |
+#define bit_YMM_state (2 << 1)
|
|
|
bca718 |
+#define bit_Opmask_state (1 << 5)
|
|
|
bca718 |
+#define bit_ZMM0_15_state (1 << 6)
|
|
|
bca718 |
+#define bit_ZMM16_31_state (1 << 7)
|
|
|
bca718 |
+
|
|
|
bca718 |
+/* The integer bit array index for the first set of internal feature bits. */
|
|
|
bca718 |
+#define FEATURE_INDEX_1 0
|
|
|
bca718 |
+
|
|
|
bca718 |
+/* The current maximum size of the feature integer bit array. */
|
|
|
bca718 |
+#define FEATURE_INDEX_MAX 1
|
|
|
bca718 |
+
|
|
|
bca718 |
+#ifdef __ASSEMBLER__
|
|
|
bca718 |
+
|
|
|
bca718 |
+# include <ifunc-defines.h>
|
|
|
bca718 |
+# include <rtld-global-offsets.h>
|
|
|
bca718 |
+
|
|
|
bca718 |
+# define index_SSE2 COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_EDX_OFFSET
|
|
|
bca718 |
+# define index_SSSE3 COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_ECX_OFFSET
|
|
|
bca718 |
+# define index_SSE4_1 COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_ECX_OFFSET
|
|
|
bca718 |
+# define index_SSE4_2 COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_ECX_OFFSET
|
|
|
bca718 |
+# define index_AVX COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_ECX_OFFSET
|
|
|
bca718 |
+# define index_AVX2 COMMON_CPUID_INDEX_7*CPUID_SIZE+CPUID_EBX_OFFSET
|
|
|
bca718 |
+
|
|
|
bca718 |
+# define index_Fast_Rep_String FEATURE_INDEX_1*FEATURE_SIZE
|
|
|
bca718 |
+# define index_Fast_Copy_Backward FEATURE_INDEX_1*FEATURE_SIZE
|
|
|
bca718 |
+# define index_Slow_BSF FEATURE_INDEX_1*FEATURE_SIZE
|
|
|
bca718 |
+# define index_Prefer_SSE_for_memop FEATURE_INDEX_1*FEATURE_SIZE
|
|
|
bca718 |
+# define index_Fast_Unaligned_Load FEATURE_INDEX_1*FEATURE_SIZE
|
|
|
bca718 |
+# define index_Prefer_PMINUB_for_stringop FEATURE_INDEX_1*FEATURE_SIZE
|
|
|
bca718 |
+# define index_AVX_Usable FEATURE_INDEX_1*FEATURE_SIZE
|
|
|
bca718 |
+# define index_FMA_Usable FEATURE_INDEX_1*FEATURE_SIZE
|
|
|
bca718 |
+# define index_FMA4_Usable FEATURE_INDEX_1*FEATURE_SIZE
|
|
|
bca718 |
+# define index_Slow_SSE4_2 FEATURE_INDEX_1*FEATURE_SIZE
|
|
|
bca718 |
+# define index_AVX2_Usable FEATURE_INDEX_1*FEATURE_SIZE
|
|
|
bca718 |
+# define index_AVX_Fast_Unaligned_Load FEATURE_INDEX_1*FEATURE_SIZE
|
|
|
bca718 |
+# define index_AVX512F_Usable FEATURE_INDEX_1*FEATURE_SIZE
|
|
|
bca718 |
+# define index_AVX512DQ_Usable FEATURE_INDEX_1*FEATURE_SIZE
|
|
|
bca718 |
+
|
|
|
bca718 |
+# if defined (_LIBC) && !IS_IN (nonlib)
|
|
|
bca718 |
+# ifdef __x86_64__
|
|
|
bca718 |
+# ifdef SHARED
|
|
|
bca718 |
+# if IS_IN (rtld)
|
|
|
bca718 |
+# define LOAD_RTLD_GLOBAL_RO_RDX
|
|
|
bca718 |
+# define HAS_FEATURE(offset, name) \
|
|
|
bca718 |
+ testl $(bit_##name), _rtld_local_ro+offset+(index_##name)(%rip)
|
|
|
bca718 |
+# else
|
|
|
bca718 |
+# define LOAD_RTLD_GLOBAL_RO_RDX \
|
|
|
bca718 |
+ mov _rtld_global_ro@GOTPCREL(%rip), %RDX_LP
|
|
|
bca718 |
+# define HAS_FEATURE(offset, name) \
|
|
|
bca718 |
+ testl $(bit_##name), \
|
|
|
bca718 |
+ RTLD_GLOBAL_RO_DL_X86_CPU_FEATURES_OFFSET+offset+(index_##name)(%rdx)
|
|
|
bca718 |
+# endif
|
|
|
bca718 |
+# else /* SHARED */
|
|
|
bca718 |
+# define LOAD_RTLD_GLOBAL_RO_RDX
|
|
|
bca718 |
+# define HAS_FEATURE(offset, name) \
|
|
|
bca718 |
+ testl $(bit_##name), _dl_x86_cpu_features+offset+(index_##name)(%rip)
|
|
|
bca718 |
+# endif /* !SHARED */
|
|
|
bca718 |
+# else /* __x86_64__ */
|
|
|
bca718 |
+# ifdef SHARED
|
|
|
bca718 |
+# define LOAD_FUNC_GOT_EAX(func) \
|
|
|
bca718 |
+ leal func@GOTOFF(%edx), %eax
|
|
|
bca718 |
+# if IS_IN (rtld)
|
|
|
bca718 |
+# define LOAD_GOT_AND_RTLD_GLOBAL_RO \
|
|
|
bca718 |
+ LOAD_PIC_REG(dx)
|
|
|
bca718 |
+# define HAS_FEATURE(offset, name) \
|
|
|
bca718 |
+ testl $(bit_##name), offset+(index_##name)+_rtld_local_ro@GOTOFF(%edx)
|
|
|
bca718 |
+# else
|
|
|
bca718 |
+# define LOAD_GOT_AND_RTLD_GLOBAL_RO \
|
|
|
bca718 |
+ LOAD_PIC_REG(dx); \
|
|
|
bca718 |
+ mov _rtld_global_ro@GOT(%edx), %ecx
|
|
|
bca718 |
+# define HAS_FEATURE(offset, name) \
|
|
|
bca718 |
+ testl $(bit_##name), \
|
|
|
bca718 |
+ RTLD_GLOBAL_RO_DL_X86_CPU_FEATURES_OFFSET+offset+(index_##name)(%ecx)
|
|
|
bca718 |
+# endif
|
|
|
bca718 |
+# else /* SHARED */
|
|
|
bca718 |
+# define LOAD_FUNC_GOT_EAX(func) \
|
|
|
bca718 |
+ leal func, %eax
|
|
|
bca718 |
+# define LOAD_GOT_AND_RTLD_GLOBAL_RO
|
|
|
bca718 |
+# define HAS_FEATURE(offset, name) \
|
|
|
bca718 |
+ testl $(bit_##name), _dl_x86_cpu_features+offset+(index_##name)
|
|
|
bca718 |
+# endif /* !SHARED */
|
|
|
bca718 |
+# endif /* !__x86_64__ */
|
|
|
bca718 |
+# else /* _LIBC && !nonlib */
|
|
|
bca718 |
+# error "Sorry, <cpu-features.h> is unimplemented for assembler"
|
|
|
bca718 |
+# endif /* !_LIBC || nonlib */
|
|
|
bca718 |
+
|
|
|
bca718 |
+/* HAS_* evaluates to true if we may use the feature at runtime. */
|
|
|
bca718 |
+# define HAS_CPU_FEATURE(name) HAS_FEATURE (CPUID_OFFSET, name)
|
|
|
bca718 |
+# define HAS_ARCH_FEATURE(name) HAS_FEATURE (FEATURE_OFFSET, name)
|
|
|
bca718 |
+
|
|
|
bca718 |
+#else /* __ASSEMBLER__ */
|
|
|
bca718 |
+
|
|
|
bca718 |
+# include <sys/param.h>
|
|
|
bca718 |
+# include <sys/types.h>
|
|
|
bca718 |
+# include <sysdep.h>
|
|
|
bca718 |
+# include <stdbool.h>
|
|
|
bca718 |
+
|
|
|
bca718 |
+/* Ugly hack to make it possible to select a strstr and strcasestr
|
|
|
bca718 |
+ implementation that avoids using the stack for 16-byte aligned
|
|
|
bca718 |
+ SSE temporaries. Doing so makes it possible to call the functions
|
|
|
bca718 |
+ with a stack that's not 16-byte aligned as can happen, for example,
|
|
|
bca718 |
+ as a result of compiling the functions' callers with the GCC
|
|
|
bca718 |
+ -mpreferred-stack-boubdary=2 or =3 option, or with the ICC
|
|
|
bca718 |
+ -falign-stack=assume-4-byte option. See rhbz 1150282 for details.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ The ifunc selector uses the unaligned version by default if this
|
|
|
bca718 |
+ file exists and is accessible. */
|
|
|
bca718 |
+# define ENABLE_STRSTR_UNALIGNED_PATHNAME \
|
|
|
bca718 |
+ "/etc/sysconfig/64bit_strstr_via_64bit_strstr_sse2_unaligned"
|
|
|
bca718 |
+
|
|
|
bca718 |
+static bool __attribute__ ((unused))
|
|
|
bca718 |
+use_unaligned_strstr (void)
|
|
|
bca718 |
+{
|
|
|
bca718 |
+ struct stat unaligned_strstr_etc_sysconfig_file;
|
|
|
bca718 |
+
|
|
|
bca718 |
+ /* TLS may not have been set up yet, so avoid using stat since it tries to
|
|
|
bca718 |
+ set errno. */
|
|
|
bca718 |
+ return INTERNAL_SYSCALL (stat, , 2,
|
|
|
bca718 |
+ ENABLE_STRSTR_UNALIGNED_PATHNAME,
|
|
|
bca718 |
+ &unaligned_strstr_etc_sysconfig_file) == 0;
|
|
|
bca718 |
+}
|
|
|
bca718 |
+
|
|
|
bca718 |
+enum
|
|
|
bca718 |
+ {
|
|
|
bca718 |
+ COMMON_CPUID_INDEX_1 = 0,
|
|
|
bca718 |
+ COMMON_CPUID_INDEX_7,
|
|
|
bca718 |
+ COMMON_CPUID_INDEX_80000001, /* for AMD */
|
|
|
bca718 |
+ /* Keep the following line at the end. */
|
|
|
bca718 |
+ COMMON_CPUID_INDEX_MAX
|
|
|
bca718 |
+ };
|
|
|
bca718 |
+
|
|
|
bca718 |
+struct cpu_features
|
|
|
bca718 |
+{
|
|
|
bca718 |
+ enum cpu_features_kind
|
|
|
bca718 |
+ {
|
|
|
bca718 |
+ arch_kind_unknown = 0,
|
|
|
bca718 |
+ arch_kind_intel,
|
|
|
bca718 |
+ arch_kind_amd,
|
|
|
bca718 |
+ arch_kind_other
|
|
|
bca718 |
+ } kind;
|
|
|
bca718 |
+ int max_cpuid;
|
|
|
bca718 |
+ struct cpuid_registers
|
|
|
bca718 |
+ {
|
|
|
bca718 |
+ unsigned int eax;
|
|
|
bca718 |
+ unsigned int ebx;
|
|
|
bca718 |
+ unsigned int ecx;
|
|
|
bca718 |
+ unsigned int edx;
|
|
|
bca718 |
+ } cpuid[COMMON_CPUID_INDEX_MAX];
|
|
|
bca718 |
+ unsigned int family;
|
|
|
bca718 |
+ unsigned int model;
|
|
|
bca718 |
+ unsigned int feature[FEATURE_INDEX_MAX];
|
|
|
bca718 |
+};
|
|
|
bca718 |
+
|
|
|
bca718 |
+/* Used from outside of glibc to get access to the CPU features
|
|
|
bca718 |
+ structure. */
|
|
|
bca718 |
+extern const struct cpu_features *__get_cpu_features (void)
|
|
|
bca718 |
+ __attribute__ ((const));
|
|
|
bca718 |
+
|
|
|
bca718 |
+# if defined (_LIBC) && !IS_IN (nonlib)
|
|
|
bca718 |
+/* Unused for x86. */
|
|
|
bca718 |
+# define INIT_ARCH()
|
|
|
bca718 |
+# define __get_cpu_features() (&GLRO(dl_x86_cpu_features))
|
|
|
bca718 |
+# endif
|
|
|
bca718 |
+
|
|
|
bca718 |
+
|
|
|
bca718 |
+/* HAS_* evaluates to true if we may use the feature at runtime. */
|
|
|
bca718 |
+# define HAS_CPU_FEATURE(name) \
|
|
|
bca718 |
+ ((__get_cpu_features ()->cpuid[index_##name].reg_##name & (bit_##name)) != 0)
|
|
|
bca718 |
+# define HAS_ARCH_FEATURE(name) \
|
|
|
bca718 |
+ ((__get_cpu_features ()->feature[index_##name] & (bit_##name)) != 0)
|
|
|
bca718 |
+
|
|
|
bca718 |
+# define index_SSE2 COMMON_CPUID_INDEX_1
|
|
|
bca718 |
+# define index_SSSE3 COMMON_CPUID_INDEX_1
|
|
|
bca718 |
+# define index_SSE4_1 COMMON_CPUID_INDEX_1
|
|
|
bca718 |
+# define index_SSE4_2 COMMON_CPUID_INDEX_1
|
|
|
bca718 |
+# define index_AVX COMMON_CPUID_INDEX_1
|
|
|
bca718 |
+# define index_AVX2 COMMON_CPUID_INDEX_7
|
|
|
bca718 |
+# define index_AVX512F COMMON_CPUID_INDEX_7
|
|
|
bca718 |
+# define index_AVX512DQ COMMON_CPUID_INDEX_7
|
|
|
bca718 |
+# define index_RTM COMMON_CPUID_INDEX_7
|
|
|
bca718 |
+# define index_FMA COMMON_CPUID_INDEX_1
|
|
|
bca718 |
+# define index_FMA4 COMMON_CPUID_INDEX_80000001
|
|
|
bca718 |
+# define index_POPCOUNT COMMON_CPUID_INDEX_1
|
|
|
bca718 |
+# define index_OSXSAVE COMMON_CPUID_INDEX_1
|
|
|
bca718 |
+
|
|
|
bca718 |
+# define reg_SSE2 edx
|
|
|
bca718 |
+# define reg_SSSE3 ecx
|
|
|
bca718 |
+# define reg_SSE4_1 ecx
|
|
|
bca718 |
+# define reg_SSE4_2 ecx
|
|
|
bca718 |
+# define reg_AVX ecx
|
|
|
bca718 |
+# define reg_AVX2 ebx
|
|
|
bca718 |
+# define reg_AVX512F ebx
|
|
|
bca718 |
+# define reg_AVX512DQ ebx
|
|
|
bca718 |
+# define reg_RTM ebx
|
|
|
bca718 |
+# define reg_FMA ecx
|
|
|
bca718 |
+# define reg_FMA4 ecx
|
|
|
bca718 |
+# define reg_POPCOUNT ecx
|
|
|
bca718 |
+# define reg_OSXSAVE ecx
|
|
|
bca718 |
+
|
|
|
bca718 |
+# define index_Fast_Rep_String FEATURE_INDEX_1
|
|
|
bca718 |
+# define index_Fast_Copy_Backward FEATURE_INDEX_1
|
|
|
bca718 |
+# define index_Slow_BSF FEATURE_INDEX_1
|
|
|
bca718 |
+# define index_Prefer_SSE_for_memop FEATURE_INDEX_1
|
|
|
bca718 |
+# define index_Fast_Unaligned_Load FEATURE_INDEX_1
|
|
|
bca718 |
+# define index_Prefer_PMINUB_for_stringop FEATURE_INDEX_1
|
|
|
bca718 |
+# define index_AVX_Usable FEATURE_INDEX_1
|
|
|
bca718 |
+# define index_FMA_Usable FEATURE_INDEX_1
|
|
|
bca718 |
+# define index_FMA4_Usable FEATURE_INDEX_1
|
|
|
bca718 |
+# define index_Slow_SSE4_2 FEATURE_INDEX_1
|
|
|
bca718 |
+# define index_AVX2_Usable FEATURE_INDEX_1
|
|
|
bca718 |
+# define index_AVX_Fast_Unaligned_Load FEATURE_INDEX_1
|
|
|
bca718 |
+# define index_AVX512F_Usable FEATURE_INDEX_1
|
|
|
bca718 |
+# define index_AVX512DQ_Usable FEATURE_INDEX_1
|
|
|
bca718 |
+
|
|
|
bca718 |
+#endif /* !__ASSEMBLER__ */
|
|
|
bca718 |
+
|
|
|
bca718 |
+#endif /* cpu_features_h */
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/x86/dl-get-cpu-features.c
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- /dev/null
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/x86/dl-get-cpu-features.c
|
|
|
bca718 |
@@ -0,0 +1,27 @@
|
|
|
bca718 |
+/* This file is part of the GNU C Library.
|
|
|
bca718 |
+ Copyright (C) 2015 Free Software Foundation, Inc.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ The GNU C Library is free software; you can redistribute it and/or
|
|
|
bca718 |
+ modify it under the terms of the GNU Lesser General Public
|
|
|
bca718 |
+ License as published by the Free Software Foundation; either
|
|
|
bca718 |
+ version 2.1 of the License, or (at your option) any later version.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
|
bca718 |
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
bca718 |
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
bca718 |
+ Lesser General Public License for more details.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ You should have received a copy of the GNU Lesser General Public
|
|
|
bca718 |
+ License along with the GNU C Library; if not, see
|
|
|
bca718 |
+ <http://www.gnu.org/licenses/>. */
|
|
|
bca718 |
+
|
|
|
bca718 |
+
|
|
|
bca718 |
+#include <ldsodefs.h>
|
|
|
bca718 |
+
|
|
|
bca718 |
+#undef __get_cpu_features
|
|
|
bca718 |
+
|
|
|
bca718 |
+const struct cpu_features *
|
|
|
bca718 |
+__get_cpu_features (void)
|
|
|
bca718 |
+{
|
|
|
bca718 |
+ return &GLRO(dl_x86_cpu_features);
|
|
|
bca718 |
+}
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/x86/libc-start.c
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- /dev/null
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/x86/libc-start.c
|
|
|
bca718 |
@@ -0,0 +1,41 @@
|
|
|
bca718 |
+/* Copyright (C) 2015 Free Software Foundation, Inc.
|
|
|
bca718 |
+ This file is part of the GNU C Library.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ The GNU C Library is free software; you can redistribute it and/or
|
|
|
bca718 |
+ modify it under the terms of the GNU Lesser General Public
|
|
|
bca718 |
+ License as published by the Free Software Foundation; either
|
|
|
bca718 |
+ version 2.1 of the License, or (at your option) any later version.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
|
bca718 |
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
bca718 |
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
bca718 |
+ Lesser General Public License for more details.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ You should have received a copy of the GNU Lesser General Public
|
|
|
bca718 |
+ License along with the GNU C Library; if not, see
|
|
|
bca718 |
+ <http://www.gnu.org/licenses/>. */
|
|
|
bca718 |
+
|
|
|
bca718 |
+#ifdef SHARED
|
|
|
bca718 |
+# include <csu/libc-start.c>
|
|
|
bca718 |
+# else
|
|
|
bca718 |
+/* The main work is done in the generic function. */
|
|
|
bca718 |
+# define LIBC_START_DISABLE_INLINE
|
|
|
bca718 |
+# define LIBC_START_MAIN generic_start_main
|
|
|
bca718 |
+# include <csu/libc-start.c>
|
|
|
bca718 |
+# include <cpu-features.h>
|
|
|
bca718 |
+# include <cpu-features.c>
|
|
|
bca718 |
+
|
|
|
bca718 |
+extern struct cpu_features _dl_x86_cpu_features;
|
|
|
bca718 |
+
|
|
|
bca718 |
+int
|
|
|
bca718 |
+__libc_start_main (int (*main) (int, char **, char ** MAIN_AUXVEC_DECL),
|
|
|
bca718 |
+ int argc, char **argv,
|
|
|
bca718 |
+ __typeof (main) init,
|
|
|
bca718 |
+ void (*fini) (void),
|
|
|
bca718 |
+ void (*rtld_fini) (void), void *stack_end)
|
|
|
bca718 |
+{
|
|
|
bca718 |
+ init_cpu_features (&_dl_x86_cpu_features);
|
|
|
bca718 |
+ return generic_start_main (main, argc, argv, init, fini, rtld_fini,
|
|
|
bca718 |
+ stack_end);
|
|
|
bca718 |
+}
|
|
|
bca718 |
+#endif
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/x86/rtld-global-offsets.sym
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- /dev/null
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/x86/rtld-global-offsets.sym
|
|
|
bca718 |
@@ -0,0 +1,7 @@
|
|
|
bca718 |
+#define SHARED 1
|
|
|
bca718 |
+
|
|
|
bca718 |
+#include <ldsodefs.h>
|
|
|
bca718 |
+
|
|
|
bca718 |
+#define rtld_global_ro_offsetof(mem) offsetof (struct rtld_global_ro, mem)
|
|
|
bca718 |
+
|
|
|
bca718 |
+RTLD_GLOBAL_RO_DL_X86_CPU_FEATURES_OFFSET rtld_global_ro_offsetof (_dl_x86_cpu_features)
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/x86/tst-get-cpu-features-static.c
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- /dev/null
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/x86/tst-get-cpu-features-static.c
|
|
|
bca718 |
@@ -0,0 +1 @@
|
|
|
bca718 |
+#include "tst-get-cpu-features.c"
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/x86/tst-get-cpu-features.c
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- /dev/null
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/x86/tst-get-cpu-features.c
|
|
|
bca718 |
@@ -0,0 +1,31 @@
|
|
|
bca718 |
+/* Test case for x86 __get_cpu_features interface
|
|
|
bca718 |
+ Copyright (C) 2015 Free Software Foundation, Inc.
|
|
|
bca718 |
+ This file is part of the GNU C Library.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ The GNU C Library is free software; you can redistribute it and/or
|
|
|
bca718 |
+ modify it under the terms of the GNU Lesser General Public
|
|
|
bca718 |
+ License as published by the Free Software Foundation; either
|
|
|
bca718 |
+ version 2.1 of the License, or (at your option) any later version.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
|
bca718 |
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
bca718 |
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
bca718 |
+ Lesser General Public License for more details.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ You should have received a copy of the GNU Lesser General Public
|
|
|
bca718 |
+ License along with the GNU C Library; if not, see
|
|
|
bca718 |
+ <http://www.gnu.org/licenses/>. */
|
|
|
bca718 |
+
|
|
|
bca718 |
+#include <stdlib.h>
|
|
|
bca718 |
+#include <cpu-features.h>
|
|
|
bca718 |
+
|
|
|
bca718 |
+static int
|
|
|
bca718 |
+do_test (void)
|
|
|
bca718 |
+{
|
|
|
bca718 |
+ if (__get_cpu_features ()->kind == arch_kind_unknown)
|
|
|
bca718 |
+ abort ();
|
|
|
bca718 |
+ return 0;
|
|
|
bca718 |
+}
|
|
|
bca718 |
+
|
|
|
bca718 |
+#define TEST_FUNCTION do_test ()
|
|
|
bca718 |
+#include "../../test-skeleton.c"
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/x86_64/cacheinfo.c
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- glibc-2.17-c758a686.orig/sysdeps/x86_64/cacheinfo.c
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/x86_64/cacheinfo.c
|
|
|
bca718 |
@@ -21,40 +21,11 @@
|
|
|
bca718 |
#include <stdlib.h>
|
|
|
bca718 |
#include <unistd.h>
|
|
|
bca718 |
#include <cpuid.h>
|
|
|
bca718 |
+#include "multiarch/init-arch.h"
|
|
|
bca718 |
|
|
|
bca718 |
-#ifndef __cpuid_count
|
|
|
bca718 |
-/* FIXME: Provide __cpuid_count if it isn't defined. Copied from gcc
|
|
|
bca718 |
- 4.4.0. Remove this if gcc 4.4 is the minimum requirement. */
|
|
|
bca718 |
-# if defined(__i386__) && defined(__PIC__)
|
|
|
bca718 |
-/* %ebx may be the PIC register. */
|
|
|
bca718 |
-# define __cpuid_count(level, count, a, b, c, d) \
|
|
|
bca718 |
- __asm__ ("xchg{l}\t{%%}ebx, %1\n\t" \
|
|
|
bca718 |
- "cpuid\n\t" \
|
|
|
bca718 |
- "xchg{l}\t{%%}ebx, %1\n\t" \
|
|
|
bca718 |
- : "=a" (a), "=r" (b), "=c" (c), "=d" (d) \
|
|
|
bca718 |
- : "0" (level), "2" (count))
|
|
|
bca718 |
-# else
|
|
|
bca718 |
-# define __cpuid_count(level, count, a, b, c, d) \
|
|
|
bca718 |
- __asm__ ("cpuid\n\t" \
|
|
|
bca718 |
- : "=a" (a), "=b" (b), "=c" (c), "=d" (d) \
|
|
|
bca718 |
- : "0" (level), "2" (count))
|
|
|
bca718 |
-# endif
|
|
|
bca718 |
-#endif
|
|
|
bca718 |
-
|
|
|
bca718 |
-#ifdef USE_MULTIARCH
|
|
|
bca718 |
-# include "multiarch/init-arch.h"
|
|
|
bca718 |
-
|
|
|
bca718 |
-# define is_intel __cpu_features.kind == arch_kind_intel
|
|
|
bca718 |
-# define is_amd __cpu_features.kind == arch_kind_amd
|
|
|
bca718 |
-# define max_cpuid __cpu_features.max_cpuid
|
|
|
bca718 |
-#else
|
|
|
bca718 |
- /* This spells out "GenuineIntel". */
|
|
|
bca718 |
-# define is_intel \
|
|
|
bca718 |
- ebx == 0x756e6547 && ecx == 0x6c65746e && edx == 0x49656e69
|
|
|
bca718 |
- /* This spells out "AuthenticAMD". */
|
|
|
bca718 |
-# define is_amd \
|
|
|
bca718 |
- ebx == 0x68747541 && ecx == 0x444d4163 && edx == 0x69746e65
|
|
|
bca718 |
-#endif
|
|
|
bca718 |
+#define is_intel GLRO(dl_x86_cpu_features).kind == arch_kind_intel
|
|
|
bca718 |
+#define is_amd GLRO(dl_x86_cpu_features).kind == arch_kind_amd
|
|
|
bca718 |
+#define max_cpuid GLRO(dl_x86_cpu_features).max_cpuid
|
|
|
bca718 |
|
|
|
bca718 |
static const struct intel_02_cache_info
|
|
|
bca718 |
{
|
|
|
bca718 |
@@ -237,21 +208,8 @@ intel_check_word (int name, unsigned int
|
|
|
bca718 |
/* Intel reused this value. For family 15, model 6 it
|
|
|
bca718 |
specifies the 3rd level cache. Otherwise the 2nd
|
|
|
bca718 |
level cache. */
|
|
|
bca718 |
- unsigned int family;
|
|
|
bca718 |
- unsigned int model;
|
|
|
bca718 |
-#ifdef USE_MULTIARCH
|
|
|
bca718 |
- family = __cpu_features.family;
|
|
|
bca718 |
- model = __cpu_features.model;
|
|
|
bca718 |
-#else
|
|
|
bca718 |
- unsigned int eax;
|
|
|
bca718 |
- unsigned int ebx;
|
|
|
bca718 |
- unsigned int ecx;
|
|
|
bca718 |
- unsigned int edx;
|
|
|
bca718 |
- __cpuid (1, eax, ebx, ecx, edx);
|
|
|
bca718 |
-
|
|
|
bca718 |
- family = ((eax >> 20) & 0xff) + ((eax >> 8) & 0xf);
|
|
|
bca718 |
- model = (((eax >>16) & 0xf) << 4) + ((eax >> 4) & 0xf);
|
|
|
bca718 |
-#endif
|
|
|
bca718 |
+ unsigned int family = GLRO(dl_x86_cpu_features).family;
|
|
|
bca718 |
+ unsigned int model = GLRO(dl_x86_cpu_features).model;
|
|
|
bca718 |
|
|
|
bca718 |
if (family == 15 && model == 6)
|
|
|
bca718 |
{
|
|
|
bca718 |
@@ -478,18 +436,6 @@ long int
|
|
|
bca718 |
attribute_hidden
|
|
|
bca718 |
__cache_sysconf (int name)
|
|
|
bca718 |
{
|
|
|
bca718 |
-#ifdef USE_MULTIARCH
|
|
|
bca718 |
- if (__cpu_features.kind == arch_kind_unknown)
|
|
|
bca718 |
- __init_cpu_features ();
|
|
|
bca718 |
-#else
|
|
|
bca718 |
- /* Find out what brand of processor. */
|
|
|
bca718 |
- unsigned int max_cpuid;
|
|
|
bca718 |
- unsigned int ebx;
|
|
|
bca718 |
- unsigned int ecx;
|
|
|
bca718 |
- unsigned int edx;
|
|
|
bca718 |
- __cpuid (0, max_cpuid, ebx, ecx, edx);
|
|
|
bca718 |
-#endif
|
|
|
bca718 |
-
|
|
|
bca718 |
if (is_intel)
|
|
|
bca718 |
return handle_intel (name, max_cpuid);
|
|
|
bca718 |
|
|
|
bca718 |
@@ -525,18 +471,6 @@ long int __x86_64_raw_shared_cache_size
|
|
|
bca718 |
int __x86_64_prefetchw attribute_hidden;
|
|
|
bca718 |
#endif
|
|
|
bca718 |
|
|
|
bca718 |
-#ifndef DISABLE_PREFERRED_MEMORY_INSTRUCTION
|
|
|
bca718 |
-/* Instructions preferred for memory and string routines.
|
|
|
bca718 |
-
|
|
|
bca718 |
- 0: Regular instructions
|
|
|
bca718 |
- 1: MMX instructions
|
|
|
bca718 |
- 2: SSE2 instructions
|
|
|
bca718 |
- 3: SSSE3 instructions
|
|
|
bca718 |
-
|
|
|
bca718 |
- */
|
|
|
bca718 |
-int __x86_64_preferred_memory_instruction attribute_hidden;
|
|
|
bca718 |
-#endif
|
|
|
bca718 |
-
|
|
|
bca718 |
|
|
|
bca718 |
static void
|
|
|
bca718 |
__attribute__((constructor))
|
|
|
bca718 |
@@ -553,14 +487,6 @@ init_cacheinfo (void)
|
|
|
bca718 |
unsigned int level;
|
|
|
bca718 |
unsigned int threads = 0;
|
|
|
bca718 |
|
|
|
bca718 |
-#ifdef USE_MULTIARCH
|
|
|
bca718 |
- if (__cpu_features.kind == arch_kind_unknown)
|
|
|
bca718 |
- __init_cpu_features ();
|
|
|
bca718 |
-#else
|
|
|
bca718 |
- int max_cpuid;
|
|
|
bca718 |
- __cpuid (0, max_cpuid, ebx, ecx, edx);
|
|
|
bca718 |
-#endif
|
|
|
bca718 |
-
|
|
|
bca718 |
if (is_intel)
|
|
|
bca718 |
{
|
|
|
bca718 |
data = handle_intel (_SC_LEVEL1_DCACHE_SIZE, max_cpuid);
|
|
|
bca718 |
@@ -576,34 +502,13 @@ init_cacheinfo (void)
|
|
|
bca718 |
shared = handle_intel (_SC_LEVEL2_CACHE_SIZE, max_cpuid);
|
|
|
bca718 |
}
|
|
|
bca718 |
|
|
|
bca718 |
- unsigned int ebx_1;
|
|
|
bca718 |
-
|
|
|
bca718 |
-#ifdef USE_MULTIARCH
|
|
|
bca718 |
- eax = __cpu_features.cpuid[COMMON_CPUID_INDEX_1].eax;
|
|
|
bca718 |
- ebx_1 = __cpu_features.cpuid[COMMON_CPUID_INDEX_1].ebx;
|
|
|
bca718 |
- ecx = __cpu_features.cpuid[COMMON_CPUID_INDEX_1].ecx;
|
|
|
bca718 |
- edx = __cpu_features.cpuid[COMMON_CPUID_INDEX_1].edx;
|
|
|
bca718 |
-#else
|
|
|
bca718 |
- __cpuid (1, eax, ebx_1, ecx, edx);
|
|
|
bca718 |
-#endif
|
|
|
bca718 |
-
|
|
|
bca718 |
- unsigned int family = (eax >> 8) & 0x0f;
|
|
|
bca718 |
- unsigned int model = (eax >> 4) & 0x0f;
|
|
|
bca718 |
- unsigned int extended_model = (eax >> 12) & 0xf0;
|
|
|
bca718 |
-
|
|
|
bca718 |
-#ifndef DISABLE_PREFERRED_MEMORY_INSTRUCTION
|
|
|
bca718 |
- /* Intel prefers SSSE3 instructions for memory/string routines
|
|
|
bca718 |
- if they are available. */
|
|
|
bca718 |
- if ((ecx & 0x200))
|
|
|
bca718 |
- __x86_64_preferred_memory_instruction = 3;
|
|
|
bca718 |
- else
|
|
|
bca718 |
- __x86_64_preferred_memory_instruction = 2;
|
|
|
bca718 |
-#endif
|
|
|
bca718 |
-
|
|
|
bca718 |
/* Figure out the number of logical threads that share the
|
|
|
bca718 |
highest cache level. */
|
|
|
bca718 |
if (max_cpuid >= 4)
|
|
|
bca718 |
{
|
|
|
bca718 |
+ unsigned int family = GLRO(dl_x86_cpu_features).family;
|
|
|
bca718 |
+ unsigned int model = GLRO(dl_x86_cpu_features).model;
|
|
|
bca718 |
+
|
|
|
bca718 |
int i = 0;
|
|
|
bca718 |
|
|
|
bca718 |
/* Query until desired cache level is enumerated. */
|
|
|
bca718 |
@@ -655,7 +560,6 @@ init_cacheinfo (void)
|
|
|
bca718 |
threads += 1;
|
|
|
bca718 |
if (threads > 2 && level == 2 && family == 6)
|
|
|
bca718 |
{
|
|
|
bca718 |
- model += extended_model;
|
|
|
bca718 |
switch (model)
|
|
|
bca718 |
{
|
|
|
bca718 |
case 0x57:
|
|
|
bca718 |
@@ -678,7 +582,9 @@ init_cacheinfo (void)
|
|
|
bca718 |
intel_bug_no_cache_info:
|
|
|
bca718 |
/* Assume that all logical threads share the highest cache level. */
|
|
|
bca718 |
|
|
|
bca718 |
- threads = (ebx_1 >> 16) & 0xff;
|
|
|
bca718 |
+ threads
|
|
|
bca718 |
+ = ((GLRO(dl_x86_cpu_features).cpuid[COMMON_CPUID_INDEX_1].ebx
|
|
|
bca718 |
+ >> 16) & 0xff);
|
|
|
bca718 |
}
|
|
|
bca718 |
|
|
|
bca718 |
/* Cap usage of highest cache level to the number of supported
|
|
|
bca718 |
@@ -693,25 +599,6 @@ init_cacheinfo (void)
|
|
|
bca718 |
long int core = handle_amd (_SC_LEVEL2_CACHE_SIZE);
|
|
|
bca718 |
shared = handle_amd (_SC_LEVEL3_CACHE_SIZE);
|
|
|
bca718 |
|
|
|
bca718 |
-#ifndef DISABLE_PREFERRED_MEMORY_INSTRUCTION
|
|
|
bca718 |
-# ifdef USE_MULTIARCH
|
|
|
bca718 |
- eax = __cpu_features.cpuid[COMMON_CPUID_INDEX_1].eax;
|
|
|
bca718 |
- ebx = __cpu_features.cpuid[COMMON_CPUID_INDEX_1].ebx;
|
|
|
bca718 |
- ecx = __cpu_features.cpuid[COMMON_CPUID_INDEX_1].ecx;
|
|
|
bca718 |
- edx = __cpu_features.cpuid[COMMON_CPUID_INDEX_1].edx;
|
|
|
bca718 |
-# else
|
|
|
bca718 |
- __cpuid (1, eax, ebx, ecx, edx);
|
|
|
bca718 |
-# endif
|
|
|
bca718 |
-
|
|
|
bca718 |
- /* AMD prefers SSSE3 instructions for memory/string routines
|
|
|
bca718 |
- if they are avaiable, otherwise it prefers integer
|
|
|
bca718 |
- instructions. */
|
|
|
bca718 |
- if ((ecx & 0x200))
|
|
|
bca718 |
- __x86_64_preferred_memory_instruction = 3;
|
|
|
bca718 |
- else
|
|
|
bca718 |
- __x86_64_preferred_memory_instruction = 0;
|
|
|
bca718 |
-#endif
|
|
|
bca718 |
-
|
|
|
bca718 |
/* Get maximum extended function. */
|
|
|
bca718 |
__cpuid (0x80000000, max_cpuid_ex, ebx, ecx, edx);
|
|
|
bca718 |
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/x86_64/dl-machine.h
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- glibc-2.17-c758a686.orig/sysdeps/x86_64/dl-machine.h
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/x86_64/dl-machine.h
|
|
|
bca718 |
@@ -26,6 +26,7 @@
|
|
|
bca718 |
#include <sysdep.h>
|
|
|
bca718 |
#include <tls.h>
|
|
|
bca718 |
#include <dl-tlsdesc.h>
|
|
|
bca718 |
+#include <cpu-features.c>
|
|
|
bca718 |
|
|
|
bca718 |
/* Return nonzero iff ELF header is compatible with the running host. */
|
|
|
bca718 |
static inline int __attribute__ ((unused))
|
|
|
bca718 |
@@ -200,6 +201,8 @@ dl_platform_init (void)
|
|
|
bca718 |
if (GLRO(dl_platform) != NULL && *GLRO(dl_platform) == '\0')
|
|
|
bca718 |
/* Avoid an empty string which would disturb us. */
|
|
|
bca718 |
GLRO(dl_platform) = NULL;
|
|
|
bca718 |
+
|
|
|
bca718 |
+ init_cpu_features (&GLRO(dl_x86_cpu_features));
|
|
|
bca718 |
}
|
|
|
bca718 |
|
|
|
bca718 |
static inline ElfW(Addr)
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/x86_64/dl-procinfo.c
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- /dev/null
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/x86_64/dl-procinfo.c
|
|
|
bca718 |
@@ -0,0 +1,57 @@
|
|
|
bca718 |
+/* Data for x86-64 version of processor capability information.
|
|
|
bca718 |
+ Copyright (C) 2015 Free Software Foundation, Inc.
|
|
|
bca718 |
+ This file is part of the GNU C Library.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ The GNU C Library is free software; you can redistribute it and/or
|
|
|
bca718 |
+ modify it under the terms of the GNU Lesser General Public
|
|
|
bca718 |
+ License as published by the Free Software Foundation; either
|
|
|
bca718 |
+ version 2.1 of the License, or (at your option) any later version.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
|
bca718 |
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
bca718 |
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
bca718 |
+ Lesser General Public License for more details.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ You should have received a copy of the GNU Lesser General Public
|
|
|
bca718 |
+ License along with the GNU C Library; if not, see
|
|
|
bca718 |
+ <http://www.gnu.org/licenses/>. */
|
|
|
bca718 |
+
|
|
|
bca718 |
+/* If anything should be added here check whether the size of each string
|
|
|
bca718 |
+ is still ok with the given array size.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ All the #ifdefs in the definitions are quite irritating but
|
|
|
bca718 |
+ necessary if we want to avoid duplicating the information. There
|
|
|
bca718 |
+ are three different modes:
|
|
|
bca718 |
+
|
|
|
bca718 |
+ - PROCINFO_DECL is defined. This means we are only interested in
|
|
|
bca718 |
+ declarations.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ - PROCINFO_DECL is not defined:
|
|
|
bca718 |
+
|
|
|
bca718 |
+ + if SHARED is defined the file is included in an array
|
|
|
bca718 |
+ initializer. The .element = { ... } syntax is needed.
|
|
|
bca718 |
+
|
|
|
bca718 |
+ + if SHARED is not defined a normal array initialization is
|
|
|
bca718 |
+ needed.
|
|
|
bca718 |
+ */
|
|
|
bca718 |
+
|
|
|
bca718 |
+#ifndef PROCINFO_CLASS
|
|
|
bca718 |
+# define PROCINFO_CLASS
|
|
|
bca718 |
+#endif
|
|
|
bca718 |
+
|
|
|
bca718 |
+#if !defined PROCINFO_DECL && defined SHARED
|
|
|
bca718 |
+ ._dl_x86_cpu_features
|
|
|
bca718 |
+#else
|
|
|
bca718 |
+PROCINFO_CLASS struct cpu_features _dl_x86_cpu_features
|
|
|
bca718 |
+#endif
|
|
|
bca718 |
+#ifndef PROCINFO_DECL
|
|
|
bca718 |
+= { }
|
|
|
bca718 |
+#endif
|
|
|
bca718 |
+#if !defined SHARED || defined PROCINFO_DECL
|
|
|
bca718 |
+;
|
|
|
bca718 |
+#else
|
|
|
bca718 |
+,
|
|
|
bca718 |
+#endif
|
|
|
bca718 |
+
|
|
|
bca718 |
+#undef PROCINFO_DECL
|
|
|
bca718 |
+#undef PROCINFO_CLASS
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/x86_64/ldsodefs.h
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- glibc-2.17-c758a686.orig/sysdeps/x86_64/ldsodefs.h
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/x86_64/ldsodefs.h
|
|
|
bca718 |
@@ -20,6 +20,7 @@
|
|
|
bca718 |
#define _X86_64_LDSODEFS_H 1
|
|
|
bca718 |
|
|
|
bca718 |
#include <elf.h>
|
|
|
bca718 |
+#include <cpu-features.h>
|
|
|
bca718 |
|
|
|
bca718 |
struct La_x86_64_regs;
|
|
|
bca718 |
struct La_x86_64_retval;
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/x86_64/multiarch/Makefile
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- glibc-2.17-c758a686.orig/sysdeps/x86_64/multiarch/Makefile
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/x86_64/multiarch/Makefile
|
|
|
bca718 |
@@ -1,5 +1,4 @@
|
|
|
bca718 |
ifeq ($(subdir),csu)
|
|
|
bca718 |
-aux += init-arch
|
|
|
bca718 |
tests += test-multiarch
|
|
|
bca718 |
gen-as-const-headers += ifunc-defines.sym
|
|
|
bca718 |
endif
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/x86_64/multiarch/Versions
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- glibc-2.17-c758a686.orig/sysdeps/x86_64/multiarch/Versions
|
|
|
bca718 |
+++ /dev/null
|
|
|
bca718 |
@@ -1,5 +0,0 @@
|
|
|
bca718 |
-libc {
|
|
|
bca718 |
- GLIBC_PRIVATE {
|
|
|
bca718 |
- __get_cpu_features;
|
|
|
bca718 |
- }
|
|
|
bca718 |
-}
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/x86_64/multiarch/cacheinfo.c
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- glibc-2.17-c758a686.orig/sysdeps/x86_64/multiarch/cacheinfo.c
|
|
|
bca718 |
+++ /dev/null
|
|
|
bca718 |
@@ -1,2 +0,0 @@
|
|
|
bca718 |
-#define DISABLE_PREFERRED_MEMORY_INSTRUCTION
|
|
|
bca718 |
-#include "../cacheinfo.c"
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/x86_64/multiarch/ifunc-defines.sym
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- glibc-2.17-c758a686.orig/sysdeps/x86_64/multiarch/ifunc-defines.sym
|
|
|
bca718 |
+++ glibc-2.17-c758a686/sysdeps/x86_64/multiarch/ifunc-defines.sym
|
|
|
bca718 |
@@ -4,7 +4,6 @@
|
|
|
bca718 |
--
|
|
|
bca718 |
|
|
|
bca718 |
CPU_FEATURES_SIZE sizeof (struct cpu_features)
|
|
|
bca718 |
-KIND_OFFSET offsetof (struct cpu_features, kind)
|
|
|
bca718 |
CPUID_OFFSET offsetof (struct cpu_features, cpuid)
|
|
|
bca718 |
CPUID_SIZE sizeof (struct cpuid_registers)
|
|
|
bca718 |
CPUID_EAX_OFFSET offsetof (struct cpuid_registers, eax)
|
|
|
bca718 |
Index: glibc-2.17-c758a686/sysdeps/x86_64/multiarch/init-arch.c
|
|
|
bca718 |
===================================================================
|
|
|
bca718 |
--- glibc-2.17-c758a686.orig/sysdeps/x86_64/multiarch/init-arch.c
|
|
|
bca718 |
+++ /dev/null
|
|
|
bca718 |
@@ -1,183 +0,0 @@
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-/* Initialize CPU feature data.
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- This file is part of the GNU C Library.
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- Copyright (C) 2008-2012 Free Software Foundation, Inc.
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- Contributed by Ulrich Drepper <drepper@redhat.com>.
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-
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- The GNU C Library is free software; you can redistribute it and/or
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- modify it under the terms of the GNU Lesser General Public
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- License as published by the Free Software Foundation; either
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- version 2.1 of the License, or (at your option) any later version.
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-
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- The GNU C Library is distributed in the hope that it will be useful,
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- but WITHOUT ANY WARRANTY; without even the implied warranty of
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- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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- Lesser General Public License for more details.
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-
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- You should have received a copy of the GNU Lesser General Public
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- License along with the GNU C Library; if not, see
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- <http://www.gnu.org/licenses/>. */
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-
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-#include <atomic.h>
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-#include <cpuid.h>
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-#include "init-arch.h"
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-
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-
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-struct cpu_features __cpu_features attribute_hidden;
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-
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-
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-static void
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-get_common_indeces (unsigned int *family, unsigned int *model)
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-{
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- __cpuid (1, __cpu_features.cpuid[COMMON_CPUID_INDEX_1].eax,
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- __cpu_features.cpuid[COMMON_CPUID_INDEX_1].ebx,
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- __cpu_features.cpuid[COMMON_CPUID_INDEX_1].ecx,
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- __cpu_features.cpuid[COMMON_CPUID_INDEX_1].edx);
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-
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- unsigned int eax = __cpu_features.cpuid[COMMON_CPUID_INDEX_1].eax;
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- *family = (eax >> 8) & 0x0f;
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- *model = (eax >> 4) & 0x0f;
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-}
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-
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-
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-void
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-__init_cpu_features (void)
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-{
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- unsigned int ebx;
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- unsigned int ecx;
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- unsigned int edx;
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- unsigned int family = 0;
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- unsigned int model = 0;
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- enum cpu_features_kind kind;
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-
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- __cpuid (0, __cpu_features.max_cpuid, ebx, ecx, edx);
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-
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- /* This spells out "GenuineIntel". */
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- if (ebx == 0x756e6547 && ecx == 0x6c65746e && edx == 0x49656e69)
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- {
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- kind = arch_kind_intel;
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-
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- get_common_indeces (&family, &model);
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-
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- /* Intel processors prefer SSE instruction for memory/string
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- routines if they are available. */
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- __cpu_features.feature[index_Prefer_SSE_for_memop]
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- |= bit_Prefer_SSE_for_memop;
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-
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- unsigned int eax = __cpu_features.cpuid[COMMON_CPUID_INDEX_1].eax;
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- unsigned int extended_family = (eax >> 20) & 0xff;
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- unsigned int extended_model = (eax >> 12) & 0xf0;
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- if (family == 0x0f)
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- {
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- family += extended_family;
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- model += extended_model;
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- }
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- else if (family == 0x06)
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- {
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- ecx = __cpu_features.cpuid[COMMON_CPUID_INDEX_1].ecx;
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- model += extended_model;
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- switch (model)
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- {
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- case 0x1c:
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- case 0x26:
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- /* BSF is slow on Atom. */
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- __cpu_features.feature[index_Slow_BSF] |= bit_Slow_BSF;
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- break;
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-
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- default:
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- /* Unknown family 0x06 processors. Assuming this is one
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- of Core i3/i5/i7 processors if AVX is available. */
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- if ((ecx & bit_AVX) == 0)
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- break;
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-
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- case 0x1a:
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- case 0x1e:
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- case 0x1f:
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- case 0x25:
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- case 0x2c:
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- case 0x2e:
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- case 0x2f:
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- /* Rep string instructions, copy backward, unaligned loads
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- and pminub are fast on Intel Core i3, i5 and i7. */
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-#if index_Fast_Rep_String != index_Fast_Copy_Backward
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-# error index_Fast_Rep_String != index_Fast_Copy_Backward
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-#endif
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-#if index_Fast_Rep_String != index_Fast_Unaligned_Load
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-# error index_Fast_Rep_String != index_Fast_Unaligned_Load
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-#endif
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-#if index_Fast_Rep_String != index_Prefer_PMINUB_for_stringop
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-# error index_Fast_Rep_String != index_Prefer_PMINUB_for_stringop
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-#endif
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- __cpu_features.feature[index_Fast_Rep_String]
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- |= (bit_Fast_Rep_String
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- | bit_Fast_Copy_Backward
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- | bit_Fast_Unaligned_Load
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- | bit_Prefer_PMINUB_for_stringop);
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- break;
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- }
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- }
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- }
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- /* This spells out "AuthenticAMD". */
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- else if (ebx == 0x68747541 && ecx == 0x444d4163 && edx == 0x69746e65)
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- {
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- kind = arch_kind_amd;
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-
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- get_common_indeces (&family, &model);
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-
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- ecx = __cpu_features.cpuid[COMMON_CPUID_INDEX_1].ecx;
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-
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- /* AMD processors prefer SSE instructions for memory/string routines
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- if they are available, otherwise they prefer integer instructions. */
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- if ((ecx & 0x200))
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- __cpu_features.feature[index_Prefer_SSE_for_memop]
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- |= bit_Prefer_SSE_for_memop;
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-
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- unsigned int eax;
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- __cpuid (0x80000000, eax, ebx, ecx, edx);
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- if (eax >= 0x80000001)
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- __cpuid (0x80000001,
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- __cpu_features.cpuid[COMMON_CPUID_INDEX_80000001].eax,
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- __cpu_features.cpuid[COMMON_CPUID_INDEX_80000001].ebx,
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- __cpu_features.cpuid[COMMON_CPUID_INDEX_80000001].ecx,
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- __cpu_features.cpuid[COMMON_CPUID_INDEX_80000001].edx);
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- }
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- else
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- kind = arch_kind_other;
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-
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- /* Can we call xgetbv? */
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- if (CPUID_OSXSAVE)
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- {
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- unsigned int xcrlow;
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- unsigned int xcrhigh;
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- asm ("xgetbv" : "=a" (xcrlow), "=d" (xcrhigh) : "c" (0));
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- /* Is YMM and XMM state usable? */
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- if ((xcrlow & (bit_YMM_state | bit_XMM_state)) ==
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- (bit_YMM_state | bit_XMM_state))
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- {
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- /* Determine if AVX is usable. */
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- if (CPUID_AVX)
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- __cpu_features.feature[index_AVX_Usable] |= bit_AVX_Usable;
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- /* Determine if FMA is usable. */
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- if (CPUID_FMA)
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- __cpu_features.feature[index_FMA_Usable] |= bit_FMA_Usable;
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- /* Determine if FMA4 is usable. */
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- if (CPUID_FMA4)
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- __cpu_features.feature[index_FMA4_Usable] |= bit_FMA4_Usable;
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- }
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- }
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-
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- __cpu_features.family = family;
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- __cpu_features.model = model;
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- atomic_write_barrier ();
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- __cpu_features.kind = kind;
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-}
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-
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-#undef __get_cpu_features
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-
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-const struct cpu_features *
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-__get_cpu_features (void)
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-{
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- if (__cpu_features.kind == arch_kind_unknown)
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- __init_cpu_features ();
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-
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- return &__cpu_features;
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-}
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Index: glibc-2.17-c758a686/sysdeps/x86_64/multiarch/init-arch.h
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===================================================================
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--- glibc-2.17-c758a686.orig/sysdeps/x86_64/multiarch/init-arch.h
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+++ glibc-2.17-c758a686/sysdeps/x86_64/multiarch/init-arch.h
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@@ -15,183 +15,8 @@
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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-#define bit_Fast_Rep_String (1 << 0)
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-#define bit_Fast_Copy_Backward (1 << 1)
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-#define bit_Slow_BSF (1 << 2)
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-#define bit_Prefer_SSE_for_memop (1 << 3)
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-#define bit_Fast_Unaligned_Load (1 << 4)
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-#define bit_Prefer_PMINUB_for_stringop (1 << 5)
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-#define bit_AVX_Usable (1 << 6)
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-#define bit_FMA_Usable (1 << 7)
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-#define bit_FMA4_Usable (1 << 8)
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-
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-/* CPUID Feature flags. */
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-#define bit_SSE2 (1 << 26)
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-#define bit_SSSE3 (1 << 9)
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-#define bit_SSE4_1 (1 << 19)
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-#define bit_SSE4_2 (1 << 20)
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-#define bit_OSXSAVE (1 << 27)
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-#define bit_AVX (1 << 28)
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-#define bit_POPCOUNT (1 << 23)
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-#define bit_FMA (1 << 12)
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-#define bit_FMA4 (1 << 16)
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-
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-/* XCR0 Feature flags. */
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-#define bit_XMM_state (1 << 1)
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-#define bit_YMM_state (2 << 1)
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-
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-#ifdef __ASSEMBLER__
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-
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-# include <ifunc-defines.h>
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-
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-# define index_SSE2 COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_EDX_OFFSET
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-# define index_SSSE3 COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_ECX_OFFSET
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-# define index_SSE4_1 COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_ECX_OFFSET
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-# define index_SSE4_2 COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_ECX_OFFSET
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-# define index_AVX COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_ECX_OFFSET
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-
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-# define index_Fast_Rep_String FEATURE_INDEX_1*FEATURE_SIZE
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-# define index_Fast_Copy_Backward FEATURE_INDEX_1*FEATURE_SIZE
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-# define index_Slow_BSF FEATURE_INDEX_1*FEATURE_SIZE
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-# define index_Prefer_SSE_for_memop FEATURE_INDEX_1*FEATURE_SIZE
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-# define index_Fast_Unaligned_Load FEATURE_INDEX_1*FEATURE_SIZE
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-# define index_Prefer_PMINUB_for_stringop FEATURE_INDEX_1*FEATURE_SIZE
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-# define index_AVX_Usable FEATURE_INDEX_1*FEATURE_SIZE
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-# define index_FMA_Usable FEATURE_INDEX_1*FEATURE_SIZE
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-# define index_FMA4_Usable FEATURE_INDEX_1*FEATURE_SIZE
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-
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-#else /* __ASSEMBLER__ */
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-
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-# include <sys/param.h>
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-# include <sys/types.h>
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-# include <sysdep.h>
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-# include <stdbool.h>
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-
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-/* Ugly hack to make it possible to select a strstr and strcasestr
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- implementation that avoids using the stack for 16-byte aligned
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- SSE temporaries. Doing so makes it possible to call the functions
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- with a stack that's not 16-byte aligned as can happen, for example,
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- as a result of compiling the functions' callers with the GCC
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- -mpreferred-stack-boubdary=2 or =3 option, or with the ICC
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- -falign-stack=assume-4-byte option. See rhbz 1150282 for details.
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-
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- The ifunc selector uses the unaligned version by default if this
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- file exists and is accessible. */
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-# define ENABLE_STRSTR_UNALIGNED_PATHNAME \
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- "/etc/sysconfig/64bit_strstr_via_64bit_strstr_sse2_unaligned"
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-
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-static bool __attribute__ ((unused))
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-use_unaligned_strstr (void)
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-{
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- struct stat unaligned_strstr_etc_sysconfig_file;
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-
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- /* TLS may not have been set up yet, so avoid using stat since it tries to
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- set errno. */
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- return INTERNAL_SYSCALL (stat, , 2,
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- ENABLE_STRSTR_UNALIGNED_PATHNAME,
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- &unaligned_strstr_etc_sysconfig_file) == 0;
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-}
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-
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-enum
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- {
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- COMMON_CPUID_INDEX_1 = 0,
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- COMMON_CPUID_INDEX_80000001, /* for AMD */
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- /* Keep the following line at the end. */
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- COMMON_CPUID_INDEX_MAX
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- };
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-
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-enum
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- {
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- FEATURE_INDEX_1 = 0,
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- /* Keep the following line at the end. */
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- FEATURE_INDEX_MAX
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- };
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bca718 |
-
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bca718 |
-extern struct cpu_features
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bca718 |
-{
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bca718 |
- enum cpu_features_kind
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- {
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- arch_kind_unknown = 0,
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- arch_kind_intel,
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- arch_kind_amd,
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- arch_kind_other
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bca718 |
- } kind;
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- int max_cpuid;
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- struct cpuid_registers
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bca718 |
- {
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- unsigned int eax;
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- unsigned int ebx;
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- unsigned int ecx;
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bca718 |
- unsigned int edx;
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bca718 |
- } cpuid[COMMON_CPUID_INDEX_MAX];
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bca718 |
- unsigned int family;
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bca718 |
- unsigned int model;
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bca718 |
- unsigned int feature[FEATURE_INDEX_MAX];
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bca718 |
-} __cpu_features attribute_hidden;
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bca718 |
-
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-
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-extern void __init_cpu_features (void) attribute_hidden;
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-# define INIT_ARCH() \
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- do \
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- if (__cpu_features.kind == arch_kind_unknown) \
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- __init_cpu_features (); \
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- while (0)
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-
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-/* Used from outside libc.so to get access to the CPU features structure. */
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-extern const struct cpu_features *__get_cpu_features (void)
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- __attribute__ ((const));
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-
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-# if IS_IN (libc)
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-# define __get_cpu_features() (&__cpu_features)
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-# endif
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-
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-# define HAS_CPU_FEATURE(idx, reg, bit) \
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- ((__get_cpu_features ()->cpuid[idx].reg & (bit)) != 0)
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-
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-/* Following are the feature tests used throughout libc. */
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-
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-/* CPUID_* evaluates to true if the feature flag is enabled.
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- We always use &__cpu_features because the HAS_CPUID_* macros
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- are called only within __init_cpu_features, where we can't
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- call __get_cpu_features without infinite recursion. */
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-# define HAS_CPUID_FLAG(idx, reg, bit) \
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- (((&__cpu_features)->cpuid[idx].reg & (bit)) != 0)
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bca718 |
-
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bca718 |
-# define CPUID_OSXSAVE \
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- HAS_CPUID_FLAG (COMMON_CPUID_INDEX_1, ecx, bit_OSXSAVE)
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bca718 |
-# define CPUID_AVX \
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- HAS_CPUID_FLAG (COMMON_CPUID_INDEX_1, ecx, bit_AVX)
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bca718 |
-# define CPUID_FMA \
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- HAS_CPUID_FLAG (COMMON_CPUID_INDEX_1, ecx, bit_FMA)
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bca718 |
-# define CPUID_FMA4 \
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- HAS_CPUID_FLAG (COMMON_CPUID_INDEX_80000001, ecx, bit_FMA4)
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-
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bca718 |
-/* HAS_* evaluates to true if we may use the feature at runtime. */
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bca718 |
-# define HAS_SSE2 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, edx, bit_SSE2)
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bca718 |
-# define HAS_POPCOUNT HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_POPCOUNT)
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bca718 |
-# define HAS_SSSE3 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_SSSE3)
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bca718 |
-# define HAS_SSE4_1 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_SSE4_1)
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bca718 |
-# define HAS_SSE4_2 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_SSE4_2)
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bca718 |
-
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bca718 |
-# define index_Fast_Rep_String FEATURE_INDEX_1
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bca718 |
-# define index_Fast_Copy_Backward FEATURE_INDEX_1
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bca718 |
-# define index_Slow_BSF FEATURE_INDEX_1
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bca718 |
-# define index_Prefer_SSE_for_memop FEATURE_INDEX_1
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bca718 |
-# define index_Fast_Unaligned_Load FEATURE_INDEX_1
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bca718 |
-# define index_AVX_Usable FEATURE_INDEX_1
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bca718 |
-# define index_FMA_Usable FEATURE_INDEX_1
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bca718 |
-# define index_FMA4_Usable FEATURE_INDEX_1
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bca718 |
-
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bca718 |
-# define HAS_ARCH_FEATURE(name) \
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bca718 |
- ((__get_cpu_features ()->feature[index_##name] & (bit_##name)) != 0)
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bca718 |
-
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bca718 |
-# define HAS_FAST_REP_STRING HAS_ARCH_FEATURE (Fast_Rep_String)
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bca718 |
-# define HAS_FAST_COPY_BACKWARD HAS_ARCH_FEATURE (Fast_Copy_Backward)
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bca718 |
-# define HAS_SLOW_BSF HAS_ARCH_FEATURE (Slow_BSF)
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bca718 |
-# define HAS_PREFER_SSE_FOR_MEMOP HAS_ARCH_FEATURE (Prefer_SSE_for_memop)
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bca718 |
-# define HAS_FAST_UNALIGNED_LOAD HAS_ARCH_FEATURE (Fast_Unaligned_Load)
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bca718 |
-# define HAS_AVX HAS_ARCH_FEATURE (AVX_Usable)
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bca718 |
-# define HAS_FMA HAS_ARCH_FEATURE (FMA_Usable)
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bca718 |
-# define HAS_FMA4 HAS_ARCH_FEATURE (FMA4_Usable)
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bca718 |
-
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bca718 |
-#endif /* __ASSEMBLER__ */
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bca718 |
+#ifdef __ASSEMBLER__
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bca718 |
+# include <cpu-features.h>
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bca718 |
+#else
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bca718 |
+# include <ldsodefs.h>
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bca718 |
+#endif
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