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glibc/glibc-rh801650.patch

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diff -rup c/sysdeps/x86_64/fpu/multiarch/e_log.c d/sysdeps/x86_64/fpu/multiarch/e_log.c
--- c/sysdeps/x86_64/fpu/multiarch/e_log.c 2012-01-01 05:16:32.000000000 -0700
+++ d/sysdeps/x86_64/fpu/multiarch/e_log.c 2012-05-11 12:53:39.491061476 -0600
@@ -14,8 +14,7 @@ extern double __ieee754_log_fma4 (double
libm_ifunc (__ieee754_log,
HAS_FMA4 ? __ieee754_log_fma4
- : (HAS_AVX ? __ieee754_log_avx
- : __ieee754_log_sse2));
+ : (HAS_AVX ? __ieee754_log_avx : __ieee754_log_sse2));
strong_alias (__ieee754_log, __log_finite)
# define __ieee754_log __ieee754_log_sse2
diff -rup c/sysdeps/x86_64/fpu/multiarch/s_atan.c d/sysdeps/x86_64/fpu/multiarch/s_atan.c
--- c/sysdeps/x86_64/fpu/multiarch/s_atan.c 2012-01-01 05:16:32.000000000 -0700
+++ d/sysdeps/x86_64/fpu/multiarch/s_atan.c 2012-05-11 12:53:39.491061476 -0600
@@ -12,7 +12,8 @@ extern double __atan_fma4 (double);
# define __atan_fma4 ((void *) 0)
# endif
-libm_ifunc (atan, HAS_FMA4 ? __atan_fma4 : HAS_AVX ? __atan_avx : __atan_sse2);
+libm_ifunc (atan, (HAS_FMA4 ? __atan_fma4 :
+ HAS_AVX ? __atan_avx : __atan_sse2));
# define atan __atan_sse2
#endif
diff -rup c/sysdeps/x86_64/fpu/multiarch/s_sin.c d/sysdeps/x86_64/fpu/multiarch/s_sin.c
--- c/sysdeps/x86_64/fpu/multiarch/s_sin.c 2012-01-01 05:16:32.000000000 -0700
+++ d/sysdeps/x86_64/fpu/multiarch/s_sin.c 2012-05-11 12:53:39.491061476 -0600
@@ -17,10 +17,12 @@ extern double __sin_fma4 (double);
# define __sin_fma4 ((void *) 0)
# endif
-libm_ifunc (__cos, HAS_FMA4 ? __cos_fma4 : HAS_AVX ? __cos_avx : __cos_sse2);
+libm_ifunc (__cos, (HAS_FMA4 ? __cos_fma4 :
+ HAS_AVX ? __cos_avx : __cos_sse2));
weak_alias (__cos, cos)
-libm_ifunc (__sin, HAS_FMA4 ? __sin_fma4 : HAS_AVX ? __sin_avx : __sin_sse2);
+libm_ifunc (__sin, (HAS_FMA4 ? __sin_fma4 :
+ HAS_AVX ? __sin_avx : __sin_sse2));
weak_alias (__sin, sin)
# define __cos __cos_sse2
diff -rup c/sysdeps/x86_64/fpu/multiarch/s_tan.c d/sysdeps/x86_64/fpu/multiarch/s_tan.c
--- c/sysdeps/x86_64/fpu/multiarch/s_tan.c 2012-01-01 05:16:32.000000000 -0700
+++ d/sysdeps/x86_64/fpu/multiarch/s_tan.c 2012-05-11 12:53:39.491061476 -0600
@@ -12,7 +12,8 @@ extern double __tan_fma4 (double);
# define __tan_fma4 ((void *) 0)
# endif
-libm_ifunc (tan, HAS_FMA4 ? __tan_fma4 : HAS_AVX ? __tan_avx : __tan_sse2);
+libm_ifunc (tan, (HAS_FMA4 ? __tan_fma4 :
+ HAS_AVX ? __tan_avx : __tan_sse2));
# define tan __tan_sse2
#endif
diff -rup c/sysdeps/x86_64/multiarch/init-arch.c d/sysdeps/x86_64/multiarch/init-arch.c
--- c/sysdeps/x86_64/multiarch/init-arch.c 2012-01-01 05:16:32.000000000 -0700
+++ d/sysdeps/x86_64/multiarch/init-arch.c 2012-05-11 12:55:29.169490958 -0600
@@ -1,6 +1,6 @@
/* Initialize CPU feature data.
This file is part of the GNU C Library.
- Copyright (C) 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+ Copyright (C) 2008-2012 Free Software Foundation, Inc.
Contributed by Ulrich Drepper <drepper@redhat.com>.
The GNU C Library is free software; you can redistribute it and/or
@@ -14,9 +14,8 @@
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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
#include <atomic.h>
#include <cpuid.h>
@@ -144,6 +143,23 @@ __init_cpu_features (void)
else
kind = arch_kind_other;
+ if (__cpu_features.cpuid[COMMON_CPUID_INDEX_1].ecx & bit_AVX)
+ {
+ /* Determine if AVX is usable. */
+ if ((__cpu_features.cpuid[COMMON_CPUID_INDEX_1].ecx & bit_OSXSAVE) != 0
+ && ({ unsigned int xcrlow;
+ unsigned int xcrhigh;
+ asm ("xgetbv"
+ : "=a" (xcrlow), "=d" (xcrhigh) : "c" (0));
+ (xcrlow & (bit_YMM_state | bit_XMM_state)) ==
+ (bit_YMM_state | bit_XMM_state); }))
+ __cpu_features.feature[index_AVX_Usable] |= bit_AVX_Usable;
+ }
+
+ /* FMA4 depends on AVX support. */
+ if ((__cpu_features.cpuid[COMMON_CPUID_INDEX_80000001].ecx & bit_FMA4) && __cpu_features.feature[index_AVX_Usable])
+ __cpu_features.feature[index_FMA4_Usable] |= bit_FMA4_Usable;
+
__cpu_features.family = family;
__cpu_features.model = model;
atomic_write_barrier ();
diff -rup c/sysdeps/x86_64/multiarch/init-arch.h d/sysdeps/x86_64/multiarch/init-arch.h
--- c/sysdeps/x86_64/multiarch/init-arch.h 2012-01-01 05:16:32.000000000 -0700
+++ d/sysdeps/x86_64/multiarch/init-arch.h 2012-05-11 12:55:29.170490953 -0600
@@ -1,5 +1,5 @@
/* This file is part of the GNU C Library.
- Copyright (C) 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+ Copyright (C) 2008-2012 Free Software Foundation, Inc.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
@@ -12,9 +12,8 @@
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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
#define bit_Fast_Rep_String (1 << 0)
#define bit_Fast_Copy_Backward (1 << 1)
@@ -22,16 +21,24 @@
#define bit_Prefer_SSE_for_memop (1 << 3)
#define bit_Fast_Unaligned_Load (1 << 4)
#define bit_Prefer_PMINUB_for_stringop (1 << 5)
+#define bit_AVX_Usable (1 << 6)
+#define bit_FMA4_Usable (1 << 7)
+/* CPUID Feature flags. */
#define bit_SSE2 (1 << 26)
#define bit_SSSE3 (1 << 9)
#define bit_SSE4_1 (1 << 19)
#define bit_SSE4_2 (1 << 20)
+#define bit_OSXSAVE (1 << 27)
#define bit_AVX (1 << 28)
#define bit_POPCOUNT (1 << 23)
#define bit_FMA (1 << 12)
#define bit_FMA4 (1 << 16)
+/* XCR0 Feature flags. */
+#define bit_XMM_state (1 << 1)
+#define bit_YMM_state (2 << 1)
+
#ifdef __ASSEMBLER__
# include <ifunc-defines.h>
@@ -48,6 +55,8 @@
# define index_Prefer_SSE_for_memop FEATURE_INDEX_1*FEATURE_SIZE
# define index_Fast_Unaligned_Load FEATURE_INDEX_1*FEATURE_SIZE
# define index_Prefer_PMINUB_for_stringop FEATURE_INDEX_1*FEATURE_SIZE
+# define index_AVX_Usable FEATURE_INDEX_1*FEATURE_SIZE
+# define index_FMA4_Usable FEATURE_INDEX_1*FEATURE_SIZE
#else /* __ASSEMBLER__ */
@@ -92,7 +101,7 @@ extern struct cpu_features
extern void __init_cpu_features (void) attribute_hidden;
-#define INIT_ARCH()\
+# define INIT_ARCH() \
do \
if (__cpu_features.kind == arch_kind_unknown) \
__init_cpu_features (); \
@@ -111,37 +120,36 @@ extern const struct cpu_features *__get_
/* Following are the feature tests used throughout libc. */
+/* CPUID_* evaluates to true if the feature flag is enabled. */
+# define CPUID_OSXSAVE HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_OSXSAVE)
+# define CPUID_AVX HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_AVX)
+# define CPUID_FMA4 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_80000001, ecx, bit_FMA4)
+
+/* HAS_* evaluates to true if we may use the feature at runtime. */
# define HAS_SSE2 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, edx, bit_SSE2)
# define HAS_POPCOUNT HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_POPCOUNT)
# define HAS_SSSE3 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_SSSE3)
# define HAS_SSE4_1 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_SSE4_1)
# define HAS_SSE4_2 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_SSE4_2)
# define HAS_FMA HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_FMA)
-# define HAS_AVX HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_AVX)
-# define HAS_FMA4 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_80000001, ecx, bit_FMA4)
# define index_Fast_Rep_String FEATURE_INDEX_1
# define index_Fast_Copy_Backward FEATURE_INDEX_1
# define index_Slow_BSF FEATURE_INDEX_1
# define index_Prefer_SSE_for_memop FEATURE_INDEX_1
# define index_Fast_Unaligned_Load FEATURE_INDEX_1
+# define index_AVX_Usable FEATURE_INDEX_1
+# define index_FMA4_Usable FEATURE_INDEX_1
-#define HAS_ARCH_FEATURE(idx, bit) \
- ((__get_cpu_features ()->feature[idx] & (bit)) != 0)
-
-#define HAS_FAST_REP_STRING \
- HAS_ARCH_FEATURE (index_Fast_Rep_String, bit_Fast_Rep_String)
-
-#define HAS_FAST_COPY_BACKWARD \
- HAS_ARCH_FEATURE (index_Fast_Copy_Backward, bit_Fast_Copy_Backward)
-
-#define HAS_SLOW_BSF \
- HAS_ARCH_FEATURE (index_Slow_BSF, bit_Slow_BSF)
-
-#define HAS_PREFER_SSE_FOR_MEMOP \
- HAS_ARCH_FEATURE (index_Prefer_SSE_for_memop, bit_Prefer_SSE_for_memop)
+# define HAS_ARCH_FEATURE(name) \
+ ((__get_cpu_features ()->feature[index_##name] & (bit_##name)) != 0)
-#define HAS_FAST_UNALIGNED_LOAD \
- HAS_ARCH_FEATURE (index_Fast_Unaligned_Load, bit_Fast_Unaligned_Load)
+# define HAS_FAST_REP_STRING HAS_ARCH_FEATURE (Fast_Rep_String)
+# define HAS_FAST_COPY_BACKWARD HAS_ARCH_FEATURE (Fast_Copy_Backward)
+# define HAS_SLOW_BSF HAS_ARCH_FEATURE (Slow_BSF)
+# define HAS_PREFER_SSE_FOR_MEMOP HAS_ARCH_FEATURE (Prefer_SSE_for_memop)
+# define HAS_FAST_UNALIGNED_LOAD HAS_ARCH_FEATURE (Fast_Unaligned_Load)
+# define HAS_AVX HAS_ARCH_FEATURE (AVX_Usable)
+# define HAS_FMA4 HAS_ARCH_FEATURE (FMA4_Usable)
#endif /* __ASSEMBLER__ */
diff -rup c/sysdeps/x86_64/multiarch/strcmp.S d/sysdeps/x86_64/multiarch/strcmp.S
--- c/sysdeps/x86_64/multiarch/strcmp.S 2012-01-01 05:16:32.000000000 -0700
+++ d/sysdeps/x86_64/multiarch/strcmp.S 2012-05-11 12:55:29.172490943 -0600
@@ -1,5 +1,5 @@
/* strcmp with SSE4.2
- Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc.
+ Copyright (C) 2009-2012 Free Software Foundation, Inc.
Contributed by Intel Corporation.
This file is part of the GNU C Library.
@@ -107,7 +107,7 @@ ENTRY(__strcasecmp)
1:
# ifdef HAVE_AVX_SUPPORT
leaq __strcasecmp_avx(%rip), %rax
- testl $bit_AVX, __cpu_features+CPUID_OFFSET+index_AVX(%rip)
+ testl $bit_AVX_Usable, __cpu_features+FEATURE_OFFSET+index_AVX_Usable(%rip)
jnz 2f
# endif
leaq __strcasecmp_sse42(%rip), %rax
@@ -130,7 +130,7 @@ ENTRY(__strncasecmp)
1:
# ifdef HAVE_AVX_SUPPORT
leaq __strncasecmp_avx(%rip), %rax
- testl $bit_AVX, __cpu_features+CPUID_OFFSET+index_AVX(%rip)
+ testl $bit_AVX_Usable, __cpu_features+FEATURE_OFFSET+index_AVX_Usable(%rip)
jnz 2f
# endif
leaq __strncasecmp_sse42(%rip), %rax
Only in d/sysdeps/x86_64/multiarch: strcmp.S.orig
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