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glibc/SOURCES/glibc-rh1817513-83.patch

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import glibc-2.28-151.el8
2021-05-18 06:37:04 +00:00
commit 9620398097de3981c1adf5233e2b3478d36bc1b3
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Jun 29 18:30:54 2020 -0700
x86: Install <sys/platform/x86.h> [BZ #26124]
Install <sys/platform/x86.h> so that programmers can do
#if __has_include(<sys/platform/x86.h>)
#include <sys/platform/x86.h>
#endif
...
if (CPU_FEATURE_USABLE (SSE2))
...
if (CPU_FEATURE_USABLE (AVX2))
...
<sys/platform/x86.h> exports only:
enum
{
COMMON_CPUID_INDEX_1 = 0,
COMMON_CPUID_INDEX_7,
COMMON_CPUID_INDEX_80000001,
COMMON_CPUID_INDEX_D_ECX_1,
COMMON_CPUID_INDEX_80000007,
COMMON_CPUID_INDEX_80000008,
COMMON_CPUID_INDEX_7_ECX_1,
/* Keep the following line at the end. */
COMMON_CPUID_INDEX_MAX
};
struct cpuid_features
{
struct cpuid_registers cpuid;
struct cpuid_registers usable;
};
struct cpu_features
{
struct cpu_features_basic basic;
struct cpuid_features features[COMMON_CPUID_INDEX_MAX];
};
/* Get a pointer to the CPU features structure. */
extern const struct cpu_features *__x86_get_cpu_features
(unsigned int max) __attribute__ ((const));
Since all feature checks are done through macros, programs compiled with
a newer <sys/platform/x86.h> are compatible with the older glibc binaries
as long as the layout of struct cpu_features is identical. The features
array can be expanded with backward binary compatibility for both .o and
.so files. When COMMON_CPUID_INDEX_MAX is increased to support new
processor features, __x86_get_cpu_features in the older glibc binaries
returns NULL and HAS_CPU_FEATURE/CPU_FEATURE_USABLE return false on the
new processor feature. No new symbol version is neeeded.
Both CPU_FEATURE_USABLE and HAS_CPU_FEATURE are provided. HAS_CPU_FEATURE
can be used to identify processor features.
Note: Although GCC has __builtin_cpu_supports, it only supports a subset
of <sys/platform/x86.h> and it is equivalent to CPU_FEATURE_USABLE. It
doesn't support HAS_CPU_FEATURE.
Conflicts:
sysdeps/x86/sys/platform/x86.h
sysdeps/x86/tst-get-cpu-features.c
sysdeps/x86_64/multiarch/test-multiarch.c
(Copyright year, URL differences.)
Downstream changes: Do not install <sys/platform/x86.h>,
and use a GLIBC_PRIVATE symbol for __x86_get_cpu_features.
diff --git a/manual/platform.texi b/manual/platform.texi
index 504addc956086820..2c145acdc3564cbb 100644
--- a/manual/platform.texi
+++ b/manual/platform.texi
@@ -7,6 +7,7 @@
@menu
* PowerPC:: Facilities Specific to the PowerPC Architecture
* RISC-V:: Facilities Specific to the RISC-V Architecture
+* X86:: Facilities Specific to the X86 Architecture
@end menu
@node PowerPC
@@ -134,3 +135,519 @@ all threads in the current process. Setting the
ordering on only the current thread is necessary. All other flag bits are
reserved.
@end deftypefun
+
+@node X86
+@appendixsec X86-specific Facilities
+
+Facilities specific to X86 that are not specific to a particular
+operating system are declared in @file{sys/platform/x86.h}.
+
+@deftypefun {const struct cpu_features *} __x86_get_cpu_features (unsigned int @var{max})
+@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
+Return a pointer to x86 CPU feature structure used by query macros for x86
+CPU features. If @var{max} exceeds @code{COMMON_CPUID_INDEX_MAX} which
+is the limit of the CPUID leaves supported by @Theglibc{}, the function
+returns @code{NULL}, indicating that the queried processor feature is
+unsupported by @Theglibc{} run-time.
+@end deftypefun
+
+@deftypefn Macro int HAS_CPU_FEATURE (@var{name})
+This macro returns a nonzero value (true) if the processor has the feature
+@var{name}.
+@end deftypefn
+
+@deftypefn Macro int CPU_FEATURE_USABLE (@var{name})
+This macro returns a nonzero value (true) if the processor has the feature
+@var{name} and the feature is supported by the operating system.
+@end deftypefn
+
+The supported processor features are:
+
+@itemize @bullet
+
+@item
+@code{ACPI} -- Thermal Monitor and Software Controlled Clock Facilities.
+
+@item
+@code{ADX} -- ADX instruction extensions.
+
+@item
+@code{APIC} -- APIC On-Chip.
+
+@item
+@code{AES} -- The AES instruction extensions.
+
+@item
+@code{AMX_BF16} -- Tile computational operations on bfloat16 numbers.
+
+@item
+@code{AMX_INT8} -- Tile computational operations on 8-bit numbers.
+
+@item
+@code{AMX_TILE} -- Tile architecture.
+
+@item
+@code{ARCH_CAPABILITIES} -- IA32_ARCH_CAPABILITIES MSR.
+
+@item
+@code{AVX} -- The AVX instruction extensions.
+
+@item
+@code{AVX2} -- The AVX2 instruction extensions.
+
+@item
+@code{AVX512_4FMAPS} -- The AVX512_4FMAPS instruction extensions.
+
+@item
+@code{AVX512_4VNNIW} -- The AVX512_4VNNIW instruction extensions.
+
+@item
+@code{AVX512_BF16} -- The AVX512_BF16 instruction extensions.
+
+@item
+@code{AVX512_BITALG} -- The AVX512_BITALG instruction extensions.
+
+@item
+@code{AVX512_IFMA} -- The AVX512_IFMA instruction extensions.
+
+@item
+@code{AVX512_VBMI} -- The AVX512_VBMI instruction extensions.
+
+@item
+@code{AVX512_VBMI2} -- The AVX512_VBMI2 instruction extensions.
+
+@item
+@code{AVX512_VNNI} -- The AVX512_VNNI instruction extensions.
+
+@item
+@code{AVX512_VP2INTERSECT} -- The AVX512_VP2INTERSECT instruction
+extensions.
+
+@item
+@code{AVX512_VPOPCNTDQ} -- The AVX512_VPOPCNTDQ instruction extensions.
+
+@item
+@code{AVX512BW} -- The AVX512BW instruction extensions.
+
+@item
+@code{AVX512CD} -- The AVX512CD instruction extensions.
+
+@item
+@code{AVX512ER} -- The AVX512ER instruction extensions.
+
+@item
+@code{AVX512DQ} -- The AVX512DQ instruction extensions.
+
+@item
+@code{AVX512F} -- The AVX512F instruction extensions.
+
+@item
+@code{AVX512PF} -- The AVX512PF instruction extensions.
+
+@item
+@code{AVX512VL} -- The AVX512VL instruction extensions.
+
+@item
+@code{BMI1} -- BMI1 instructions.
+
+@item
+@code{BMI2} -- BMI2 instructions.
+
+@item
+@code{CLDEMOTE} -- CLDEMOTE instruction.
+
+@item
+@code{CLFLUSHOPT} -- CLFLUSHOPT instruction.
+
+@item
+@code{CLFSH} -- CLFLUSH instruction.
+
+@item
+@code{CLWB} -- CLWB instruction.
+
+@item
+@code{CMOV} -- Conditional Move instructions.
+
+@item
+@code{CMPXCHG16B} -- CMPXCHG16B instruction.
+
+@item
+@code{CNXT_ID} -- L1 Context ID.
+
+@item
+@code{CORE_CAPABILITIES} -- IA32_CORE_CAPABILITIES MSR.
+
+@item
+@code{CX8} -- CMPXCHG8B instruction.
+
+@item
+@code{DCA} -- Data prefetch from a memory mapped device.
+
+@item
+@code{DE} -- Debugging Extensions.
+
+@item
+@code{DEPR_FPU_CS_DS} -- Deprecates FPU CS and FPU DS values.
+
+@item
+@code{DS} -- Debug Store.
+
+@item
+@code{DS_CPL} -- CPL Qualified Debug Store.
+
+@item
+@code{DTES64} -- 64-bit DS Area.
+
+@item
+@code{EIST} -- Enhanced Intel SpeedStep technology.
+
+@item
+@code{ENQCMD} -- Enqueue Stores instructions.
+
+@item
+@code{ERMS} -- Enhanced REP MOVSB/STOSB.
+
+@item
+@code{F16C} -- 16-bit floating-point conversion instructions.
+
+@item
+@code{FMA} -- FMA extensions using YMM state.
+
+@item
+@code{FMA4} -- FMA4 instruction extensions.
+
+@item
+@code{FPU} -- X87 Floating Point Unit On-Chip.
+
+@item
+@code{FSGSBASE} -- RDFSBASE/RDGSBASE/WRFSBASE/WRGSBASE instructions.
+
+@item
+@code{FSRM} -- Fast Short REP MOV.
+
+@item
+@code{FXSR} -- FXSAVE and FXRSTOR instructions.
+
+@item
+@code{GFNI} -- GFNI instruction extensions.
+
+@item
+@code{HLE} -- HLE instruction extensions.
+
+@item
+@code{HTT} -- Max APIC IDs reserved field is Valid.
+
+@item
+@code{HYBRID} -- Hybrid processor.
+
+@item
+@code{IBRS_IBPB} -- Indirect branch restricted speculation (IBRS) and
+the indirect branch predictor barrier (IBPB).
+
+@item
+@code{IBT} -- Intel Indirect Branch Tracking instruction extensions.
+
+@item
+@code{INVARIANT_TSC} -- Invariant TSC.
+
+@item
+@code{INVPCID} -- INVPCID instruction.
+
+@item
+@code{L1D_FLUSH} -- IA32_FLUSH_CMD MSR.
+
+@item
+@code{LAHF64_SAHF64} -- LAHF/SAHF available in 64-bit mode.
+
+@item
+@code{LM} -- Long mode.
+
+@item
+@code{LWP} -- Lightweight profiling.
+
+@item
+@code{LZCNT} -- LZCNT instruction.
+
+@item
+@code{MCA} -- Machine Check Architecture.
+
+@item
+@code{MCE} -- Machine Check Exception.
+
+@item
+@code{MD_CLEAR} -- MD_CLEAR.
+
+@item
+@code{MMX} -- Intel MMX Technology.
+
+@item
+@code{MONITOR} -- MONITOR/MWAIT instructions.
+
+@item
+@code{MOVBE} -- MOVBE instruction.
+
+@item
+@code{MOVDIRI} -- MOVDIRI instruction.
+
+@item
+@code{MOVDIR64B} -- MOVDIR64B instruction.
+
+@item
+@code{MPX} -- Intel Memory Protection Extensions.
+
+@item
+@code{MSR} -- Model Specific Registers RDMSR and WRMSR instructions.
+
+@item
+@code{MTRR} -- Memory Type Range Registers.
+
+@item
+@code{NX} -- No-execute page protection.
+
+@item
+@code{OSPKE} -- OS has set CR4.PKE to enable protection keys.
+
+@item
+@code{OSXSAVE} -- The OS has set CR4.OSXSAVE[bit 18] to enable
+XSETBV/XGETBV instructions to access XCR0 and to support processor
+extended state management using XSAVE/XRSTOR.
+
+@item
+@code{PAE} -- Physical Address Extension.
+
+@item
+@code{PAGE1GB} -- 1-GByte page.
+
+@item
+@code{PAT} -- Page Attribute Table.
+
+@item
+@code{PBE} -- Pending Break Enable.
+
+@item
+@code{PCID} -- Process-context identifiers.
+
+@item
+@code{PCLMULQDQ} -- PCLMULQDQ instruction.
+
+@item
+@code{PCONFIG} -- PCONFIG instruction.
+
+@item
+@code{PDCM} -- Perfmon and Debug Capability.
+
+@item
+@code{PGE} -- Page Global Bit.
+
+@item
+@code{PKS} -- Protection keys for supervisor-mode pages.
+
+@item
+@code{PKU} -- Protection keys for user-mode pages.
+
+@item
+@code{POPCNT} -- POPCNT instruction.
+
+@item
+@code{PREFETCHW} -- PREFETCHW instruction.
+
+@item
+@code{PREFETCHWT1} -- PREFETCHWT1 instruction.
+
+@item
+@code{PSE} -- Page Size Extension.
+
+@item
+@code{PSE_36} -- 36-Bit Page Size Extension.
+
+@item
+@code{PSN} -- Processor Serial Number.
+
+@item
+@code{RDPID} -- RDPID instruction.
+
+@item
+@code{RDRAND} -- RDRAND instruction.
+
+@item
+@code{RDSEED} -- RDSEED instruction.
+
+@item
+@code{RDT_A} -- Intel Resource Director Technology (Intel RDT) Allocation
+capability.
+
+@item
+@code{RDT_M} -- Intel Resource Director Technology (Intel RDT) Monitoring
+capability.
+
+@item
+@code{RDTSCP} -- RDTSCP instruction.
+
+@item
+@code{RTM} -- RTM instruction extensions.
+
+@item
+@code{SDBG} -- IA32_DEBUG_INTERFACE MSR for silicon debug.
+
+@item
+@code{SEP} -- SYSENTER and SYSEXIT instructions.
+
+@item
+@code{SERIALIZE} -- SERIALIZE instruction.
+
+@item
+@code{SGX} -- Intel Software Guard Extensions.
+
+@item
+@code{SGX_LC} -- SGX Launch Configuration.
+
+@item
+@code{SHA} -- SHA instruction extensions.
+
+@item
+@code{SHSTK} -- Intel Shadow Stack instruction extensions.
+
+@item
+@code{SMAP} -- Supervisor-Mode Access Prevention.
+
+@item
+@code{SMEP} -- Supervisor-Mode Execution Prevention.
+
+@item
+@code{SMX} -- Safer Mode Extensions.
+
+@item
+@code{SS} -- Self Snoop.
+
+@item
+@code{SSBD} -- Speculative Store Bypass Disable (SSBD).
+
+@item
+@code{SSE} -- Streaming SIMD Extensions.
+
+@item
+@code{SSE2} -- Streaming SIMD Extensions 2.
+
+@item
+@code{SSE3} -- Streaming SIMD Extensions 3.
+
+@item
+@code{SSE4_1} -- Streaming SIMD Extensions 4.1.
+
+@item
+@code{SSE4_2} -- Streaming SIMD Extensions 4.2.
+
+@item
+@code{SSE4A} -- SSE4A instruction extensions.
+
+@item
+@code{SSSE3} -- Supplemental Streaming SIMD Extensions 3.
+
+@item
+@code{STIBP} -- Single thread indirect branch predictors (STIBP).
+
+@item
+@code{SVM} -- Secure Virtual Machine.
+
+@item
+@code{SYSCALL_SYSRET} -- SYSCALL/SYSRET instructions.
+
+@item
+@code{TBM} -- Trailing bit manipulation instructions.
+
+@item
+@code{TM} -- Thermal Monitor.
+
+@item
+@code{TM2} -- Thermal Monitor 2.
+
+@item
+@code{TRACE} -- Intel Processor Trace.
+
+@item
+@code{TSC} -- Time Stamp Counter. RDTSC instruction.
+
+@item
+@code{TSC_ADJUST} -- IA32_TSC_ADJUST MSR.
+
+@item
+@code{TSC_DEADLINE} -- Local APIC timer supports one-shot operation
+using a TSC deadline value.
+
+@item
+@code{TSXLDTRK} -- TSXLDTRK instructions.
+
+@item
+@code{UMIP} -- User-mode instruction prevention.
+
+@item
+@code{VAES} -- VAES instruction extensions.
+
+@item
+@code{VME} -- Virtual 8086 Mode Enhancements.
+
+@item
+@code{VMX} -- Virtual Machine Extensions.
+
+@item
+@code{VPCLMULQDQ} -- VPCLMULQDQ instruction.
+
+@item
+@code{WAITPKG} -- WAITPKG instruction extensions.
+
+@item
+@code{WBNOINVD} -- WBINVD/WBNOINVD instructions.
+
+@item
+@code{X2APIC} -- x2APIC.
+
+@item
+@code{XFD} -- Extended Feature Disable (XFD).
+
+@item
+@code{XGETBV_ECX_1} -- XGETBV with ECX = 1.
+
+@item
+@code{XOP} -- XOP instruction extensions.
+
+@item
+@code{XSAVE} -- The XSAVE/XRSTOR processor extended states feature, the
+XSETBV/XGETBV instructions, and XCR0.
+
+@item
+@code{XSAVEC} -- XSAVEC instruction.
+
+@item
+@code{XSAVEOPT} -- XSAVEOPT instruction.
+
+@item
+@code{XSAVES} -- XSAVES/XRSTORS instructions.
+
+@item
+@code{XTPRUPDCTRL} -- xTPR Update Control.
+
+@end itemize
+
+You could query if a processor supports @code{AVX} with:
+
+@smallexample
+#include <sys/platform/x86.h>
+
+int
+support_avx (void)
+@{
+ return HAS_CPU_FEATURE (AVX);
+@}
+@end smallexample
+
+and if @code{AVX} is usable with:
+
+@smallexample
+#include <sys/platform/x86.h>
+
+int
+usable_avx (void)
+@{
+ return CPU_FEATURE_USABLE (AVX);
+@}
+@end smallexample
diff --git a/sysdeps/i386/i686/multiarch/Makefile b/sysdeps/i386/i686/multiarch/Makefile
index bf75a9947fe013a3..c4897922d710d37e 100644
--- a/sysdeps/i386/i686/multiarch/Makefile
+++ b/sysdeps/i386/i686/multiarch/Makefile
@@ -1,7 +1,3 @@
-ifeq ($(subdir),csu)
-tests += test-multiarch
-endif
-
ifeq ($(subdir),string)
gen-as-const-headers += locale-defines.sym
sysdep_routines += bzero-sse2 memset-sse2 memcpy-ssse3 mempcpy-ssse3 \
diff --git a/sysdeps/i386/i686/multiarch/test-multiarch.c b/sysdeps/i386/i686/multiarch/test-multiarch.c
deleted file mode 100644
index 593cfec2735fb5b0..0000000000000000
--- a/sysdeps/i386/i686/multiarch/test-multiarch.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <sysdeps/x86_64/multiarch/test-multiarch.c>
diff --git a/sysdeps/x86/Makefile b/sysdeps/x86/Makefile
index 962bbcb07eba1259..59e928e9d08d3229 100644
--- a/sysdeps/x86/Makefile
+++ b/sysdeps/x86/Makefile
@@ -5,7 +5,8 @@ endif
ifeq ($(subdir),elf)
sysdep-dl-routines += dl-get-cpu-features
-tests += tst-get-cpu-features tst-get-cpu-features-static
+tests += tst-get-cpu-features tst-get-cpu-features-static \
+ tst-cpu-features-cpuinfo tst-cpu-features-supports
tests-static += tst-get-cpu-features-static
endif
diff --git a/sysdeps/x86/Versions b/sysdeps/x86/Versions
index e02923708e160881..df70e602192053c0 100644
--- a/sysdeps/x86/Versions
+++ b/sysdeps/x86/Versions
@@ -1,5 +1,5 @@
ld {
GLIBC_PRIVATE {
- __get_cpu_features;
+ __x86_get_cpu_features;
}
}
diff --git a/sysdeps/x86/dl-get-cpu-features.c b/sysdeps/x86/dl-get-cpu-features.c
index 49593f19c64ad0bb..2aba0d167129b336 100644
--- a/sysdeps/x86/dl-get-cpu-features.c
+++ b/sysdeps/x86/dl-get-cpu-features.c
@@ -18,10 +18,12 @@
#include <ldsodefs.h>
-#undef __get_cpu_features
+#undef __x86_get_cpu_features
const struct cpu_features *
-__get_cpu_features (void)
+__x86_get_cpu_features (unsigned int max)
{
+ if (max > COMMON_CPUID_INDEX_MAX)
+ return NULL;
return &GLRO(dl_x86_cpu_features);
}
diff --git a/sysdeps/x86/include/cpu-features.h b/sysdeps/x86/include/cpu-features.h
new file mode 100644
index 0000000000000000..dcf29b6fe8578078
--- /dev/null
+++ b/sysdeps/x86/include/cpu-features.h
@@ -0,0 +1,183 @@
+/* Data structure for x86 CPU features.
+ Copyright (C) 2020 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef _PRIVATE_CPU_FEATURES_H
+#define _PRIVATE_CPU_FEATURES_H 1
+
+#ifdef _CPU_FEATURES_H
+# error this should be impossible
+#endif
+
+#ifndef _ISOMAC
+/* Get most of the contents from the public header, but we define a
+ different `struct cpu_features' type for private use. */
+# define cpu_features cpu_features_public
+# define __x86_get_cpu_features __x86_get_cpu_features_public
+#endif
+
+#include <sysdeps/x86/sys/platform/x86.h>
+
+#ifndef _ISOMAC
+
+# undef cpu_features
+# undef __x86_get_cpu_features
+# define __get_cpu_features() __x86_get_cpu_features (0)
+
+enum
+{
+ /* The integer bit array index for the first set of preferred feature
+ bits. */
+ PREFERRED_FEATURE_INDEX_1 = 0,
+ /* The current maximum size of the feature integer bit array. */
+ PREFERRED_FEATURE_INDEX_MAX
+};
+
+/* Only used directly in cpu-features.c. */
+# define CPU_FEATURE_SET(ptr, name) \
+ ptr->features[index_cpu_##name].usable.reg_##name |= bit_cpu_##name;
+# define CPU_FEATURE_UNSET(ptr, name) \
+ ptr->features[index_cpu_##name].usable.reg_##name &= ~bit_cpu_##name;
+# define CPU_FEATURE_SET_USABLE(ptr, name) \
+ ptr->features[index_cpu_##name].usable.reg_##name \
+ |= ptr->features[index_cpu_##name].cpuid.reg_##name & bit_cpu_##name;
+# define CPU_FEATURE_PREFERRED_P(ptr, name) \
+ ((ptr->preferred[index_arch_##name] & bit_arch_##name) != 0)
+# define CPU_FEATURE_CPU_P(ptr, name) \
+ CPU_FEATURE_CHECK_P (ptr, name, cpuid)
+
+/* HAS_CPU_FEATURE evaluates to true if CPU supports the feature. */
+# undef HAS_CPU_FEATURE
+# define HAS_CPU_FEATURE(name) \
+ CPU_FEATURE_CPU_P (__x86_get_cpu_features (0), name)
+/* CPU_FEATURE_USABLE evaluates to true if the feature is usable. */
+# undef CPU_FEATURE_USABLE
+# define CPU_FEATURE_USABLE(name) \
+ CPU_FEATURE_USABLE_P (__x86_get_cpu_features (0), name)
+/* CPU_FEATURE_PREFER evaluates to true if we prefer the feature at
+ runtime. */
+# define CPU_FEATURE_PREFERRED(name) \
+ CPU_FEATURE_PREFERRED_P(__get_cpu_features (), name)
+
+# define CPU_FEATURES_CPU_P(ptr, name) \
+ CPU_FEATURE_CPU_P (ptr, name)
+# define CPU_FEATURES_ARCH_P(ptr, name) \
+ CPU_FEATURE_PREFERRED_P (ptr, name)
+# define HAS_ARCH_FEATURE(name) \
+ CPU_FEATURE_PREFERRED (name)
+
+/* PREFERRED_FEATURE_INDEX_1. */
+# define bit_arch_I586 (1u << 0)
+# define bit_arch_I686 (1u << 1)
+# define bit_arch_Fast_Rep_String (1u << 2)
+# define bit_arch_Fast_Copy_Backward (1u << 3)
+# define bit_arch_Fast_Unaligned_Load (1u << 4)
+# define bit_arch_Fast_Unaligned_Copy (1u << 5)
+# define bit_arch_Slow_BSF (1u << 6)
+# define bit_arch_Slow_SSE4_2 (1u << 7)
+# define bit_arch_AVX_Fast_Unaligned_Load (1u << 8)
+# define bit_arch_Prefer_MAP_32BIT_EXEC (1u << 9)
+# define bit_arch_Prefer_PMINUB_for_stringop (1u << 10)
+# define bit_arch_Prefer_No_VZEROUPPER (1u << 11)
+# define bit_arch_Prefer_ERMS (1u << 12)
+# define bit_arch_Prefer_FSRM (1u << 13)
+# define bit_arch_Prefer_No_AVX512 (1u << 14)
+# define bit_arch_MathVec_Prefer_No_AVX512 (1u << 15)
+
+# define index_arch_Fast_Rep_String PREFERRED_FEATURE_INDEX_1
+# define index_arch_Fast_Copy_Backward PREFERRED_FEATURE_INDEX_1
+# define index_arch_Slow_BSF PREFERRED_FEATURE_INDEX_1
+# define index_arch_Fast_Unaligned_Load PREFERRED_FEATURE_INDEX_1
+# define index_arch_Prefer_PMINUB_for_stringop PREFERRED_FEATURE_INDEX_1
+# define index_arch_Fast_Unaligned_Copy PREFERRED_FEATURE_INDEX_1
+# define index_arch_I586 PREFERRED_FEATURE_INDEX_1
+# define index_arch_I686 PREFERRED_FEATURE_INDEX_1
+# define index_arch_Slow_SSE4_2 PREFERRED_FEATURE_INDEX_1
+# define index_arch_AVX_Fast_Unaligned_Load PREFERRED_FEATURE_INDEX_1
+# define index_arch_Prefer_MAP_32BIT_EXEC PREFERRED_FEATURE_INDEX_1
+# define index_arch_Prefer_No_VZEROUPPER PREFERRED_FEATURE_INDEX_1
+# define index_arch_Prefer_ERMS PREFERRED_FEATURE_INDEX_1
+# define index_arch_Prefer_No_AVX512 PREFERRED_FEATURE_INDEX_1
+# define index_arch_MathVec_Prefer_No_AVX512 PREFERRED_FEATURE_INDEX_1
+# define index_arch_Prefer_FSRM PREFERRED_FEATURE_INDEX_1
+
+/* XCR0 Feature flags. */
+# define bit_XMM_state (1u << 1)
+# define bit_YMM_state (1u << 2)
+# define bit_Opmask_state (1u << 5)
+# define bit_ZMM0_15_state (1u << 6)
+# define bit_ZMM16_31_state (1u << 7)
+# define bit_XTILECFG_state (1u << 17)
+# define bit_XTILEDATA_state (1u << 18)
+
+struct cpu_features
+{
+ struct cpu_features_basic basic;
+ struct cpuid_features features[COMMON_CPUID_INDEX_MAX];
+ unsigned int preferred[PREFERRED_FEATURE_INDEX_MAX];
+ /* The state size for XSAVEC or XSAVE. The type must be unsigned long
+ int so that we use
+
+ sub xsave_state_size_offset(%rip) %RSP_LP
+
+ in _dl_runtime_resolve. */
+ unsigned long int xsave_state_size;
+ /* The full state size for XSAVE when XSAVEC is disabled by
+
+ GLIBC_TUNABLES=glibc.cpu.hwcaps=-XSAVEC
+ */
+ unsigned int xsave_state_full_size;
+ /* Data cache size for use in memory and string routines, typically
+ L1 size. */
+ unsigned long int data_cache_size;
+ /* Shared cache size for use in memory and string routines, typically
+ L2 or L3 size. */
+ unsigned long int shared_cache_size;
+ /* Threshold to use non temporal store. */
+ unsigned long int non_temporal_threshold;
+ /* Threshold to use "rep movsb". */
+ unsigned long int rep_movsb_threshold;
+ /* Threshold to use "rep stosb". */
+ unsigned long int rep_stosb_threshold;
+};
+
+# if defined (_LIBC) && !IS_IN (nonlib)
+/* Unused for x86. */
+# define INIT_ARCH()
+# define __x86_get_cpu_features(max) (&GLRO(dl_x86_cpu_features))
+# endif
+
+# ifdef __x86_64__
+# define HAS_CPUID 1
+# elif (defined __i586__ || defined __pentium__ \
+ || defined __geode__ || defined __k6__)
+# define HAS_CPUID 1
+# define HAS_I586 1
+# define HAS_I686 HAS_ARCH_FEATURE (I686)
+# elif defined __i486__
+# define HAS_CPUID 0
+# define HAS_I586 HAS_ARCH_FEATURE (I586)
+# define HAS_I686 HAS_ARCH_FEATURE (I686)
+# else
+# define HAS_CPUID 1
+# define HAS_I586 1
+# define HAS_I686 1
+# endif
+
+#endif /* !_ISOMAC */
+
+#endif /* include/cpu-features.h */
diff --git a/sysdeps/x86/cpu-features.h b/sysdeps/x86/sys/platform/x86.h
similarity index 81%
rename from sysdeps/x86/cpu-features.h
rename to sysdeps/x86/sys/platform/x86.h
index 3b401d441b8d370a..ebc5f6fc16cb8104 100644
--- a/sysdeps/x86/cpu-features.h
+++ b/sysdeps/x86/sys/platform/x86.h
@@ -1,5 +1,6 @@
-/* This file is part of the GNU C Library.
- Copyright (C) 2008-2018 Free Software Foundation, Inc.
+/* Data structure for x86 CPU features.
+ This file is part of the GNU C Library.
+ Copyright (C) 2008-2020 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
@@ -15,17 +16,8 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#ifndef cpu_features_h
-#define cpu_features_h
-
-enum
-{
- /* The integer bit array index for the first set of preferred feature
- bits. */
- PREFERRED_FEATURE_INDEX_1 = 0,
- /* The current maximum size of the feature integer bit array. */
- PREFERRED_FEATURE_INDEX_MAX
-};
+#ifndef _SYS_PLATFORM_X86_H
+#define _SYS_PLATFORM_X86_H
enum
{
@@ -76,73 +68,32 @@ struct cpu_features
{
struct cpu_features_basic basic;
struct cpuid_features features[COMMON_CPUID_INDEX_MAX];
- unsigned int preferred[PREFERRED_FEATURE_INDEX_MAX];
- /* The state size for XSAVEC or XSAVE. The type must be unsigned long
- int so that we use
-
- sub xsave_state_size_offset(%rip) %RSP_LP
-
- in _dl_runtime_resolve. */
- unsigned long int xsave_state_size;
- /* The full state size for XSAVE when XSAVEC is disabled by
-
- GLIBC_TUNABLES=glibc.cpu.hwcaps=-XSAVEC
- */
- unsigned int xsave_state_full_size;
- /* Data cache size for use in memory and string routines, typically
- L1 size. */
- unsigned long int data_cache_size;
- /* Shared cache size for use in memory and string routines, typically
- L2 or L3 size. */
- unsigned long int shared_cache_size;
- /* Threshold to use non temporal store. */
- unsigned long int non_temporal_threshold;
- /* Threshold to use "rep movsb". */
- unsigned long int rep_movsb_threshold;
- /* Threshold to use "rep stosb". */
- unsigned long int rep_stosb_threshold;
};
-/* Used from outside of glibc to get access to the CPU features
- structure. */
-extern const struct cpu_features *__get_cpu_features (void)
+/* Get a pointer to the CPU features structure. */
+extern const struct cpu_features *__x86_get_cpu_features (unsigned int)
__attribute__ ((const));
-/* Only used directly in cpu-features.c. */
#define CPU_FEATURE_CHECK_P(ptr, name, check) \
((ptr->features[index_cpu_##name].check.reg_##name \
& bit_cpu_##name) != 0)
-#define CPU_FEATURE_SET(ptr, name) \
- ptr->features[index_cpu_##name].usable.reg_##name |= bit_cpu_##name;
-#define CPU_FEATURE_UNSET(ptr, name) \
- ptr->features[index_cpu_##name].usable.reg_##name &= ~bit_cpu_##name;
-#define CPU_FEATURE_SET_USABLE(ptr, name) \
- ptr->features[index_cpu_##name].usable.reg_##name \
- |= ptr->features[index_cpu_##name].cpuid.reg_##name & bit_cpu_##name;
-#define CPU_FEATURE_PREFERRED_P(ptr, name) \
- ((ptr->preferred[index_arch_##name] & bit_arch_##name) != 0)
#define CPU_FEATURE_CPU_P(ptr, name) \
CPU_FEATURE_CHECK_P (ptr, name, cpuid)
#define CPU_FEATURE_USABLE_P(ptr, name) \
CPU_FEATURE_CHECK_P (ptr, name, usable)
/* HAS_CPU_FEATURE evaluates to true if CPU supports the feature. */
-#define HAS_CPU_FEATURE(name) \
- CPU_FEATURE_CPU_P (__get_cpu_features (), name)
+#define HAS_CPU_FEATURE(name) \
+ (__extension__ \
+ ({ const struct cpu_features *__ptr = \
+ __x86_get_cpu_features (COMMON_CPUID_INDEX_MAX); \
+ __ptr && CPU_FEATURE_CPU_P (__ptr, name); }))
/* CPU_FEATURE_USABLE evaluates to true if the feature is usable. */
-#define CPU_FEATURE_USABLE(name) \
- CPU_FEATURE_USABLE_P (__get_cpu_features (), name)
-/* CPU_FEATURE_PREFER evaluates to true if we prefer the feature at
- runtime. */
-#define CPU_FEATURE_PREFERRED(name) \
- CPU_FEATURE_PREFERRED_P(__get_cpu_features (), name)
-
-#define CPU_FEATURES_CPU_P(ptr, name) \
- CPU_FEATURE_CPU_P (ptr, name)
-#define CPU_FEATURES_ARCH_P(ptr, name) \
- CPU_FEATURE_PREFERRED_P (ptr, name)
-#define HAS_ARCH_FEATURE(name) \
- CPU_FEATURE_PREFERRED (name)
+#define CPU_FEATURE_USABLE(name) \
+ (__extension__ \
+ ({ const struct cpu_features *__ptr = \
+ __x86_get_cpu_features (COMMON_CPUID_INDEX_MAX); \
+ __ptr && CPU_FEATURE_USABLE_P (__ptr, name); }))
/* CPU features. */
@@ -787,71 +738,4 @@ extern const struct cpu_features *__get_cpu_features (void)
/* EAX. */
#define reg_AVX512_BF16 eax
-/* FEATURE_INDEX_2. */
-#define bit_arch_I586 (1u << 0)
-#define bit_arch_I686 (1u << 1)
-#define bit_arch_Fast_Rep_String (1u << 2)
-#define bit_arch_Fast_Copy_Backward (1u << 3)
-#define bit_arch_Fast_Unaligned_Load (1u << 4)
-#define bit_arch_Fast_Unaligned_Copy (1u << 5)
-#define bit_arch_Slow_BSF (1u << 6)
-#define bit_arch_Slow_SSE4_2 (1u << 7)
-#define bit_arch_AVX_Fast_Unaligned_Load (1u << 8)
-#define bit_arch_Prefer_MAP_32BIT_EXEC (1u << 9)
-#define bit_arch_Prefer_PMINUB_for_stringop (1u << 10)
-#define bit_arch_Prefer_No_VZEROUPPER (1u << 11)
-#define bit_arch_Prefer_ERMS (1u << 12)
-#define bit_arch_Prefer_FSRM (1u << 13)
-#define bit_arch_Prefer_No_AVX512 (1u << 14)
-#define bit_arch_MathVec_Prefer_No_AVX512 (1u << 15)
-
-#define index_arch_Fast_Rep_String PREFERRED_FEATURE_INDEX_1
-#define index_arch_Fast_Copy_Backward PREFERRED_FEATURE_INDEX_1
-#define index_arch_Slow_BSF PREFERRED_FEATURE_INDEX_1
-#define index_arch_Fast_Unaligned_Load PREFERRED_FEATURE_INDEX_1
-#define index_arch_Prefer_PMINUB_for_stringop PREFERRED_FEATURE_INDEX_1
-#define index_arch_Fast_Unaligned_Copy PREFERRED_FEATURE_INDEX_1
-#define index_arch_I586 PREFERRED_FEATURE_INDEX_1
-#define index_arch_I686 PREFERRED_FEATURE_INDEX_1
-#define index_arch_Slow_SSE4_2 PREFERRED_FEATURE_INDEX_1
-#define index_arch_AVX_Fast_Unaligned_Load PREFERRED_FEATURE_INDEX_1
-#define index_arch_Prefer_MAP_32BIT_EXEC PREFERRED_FEATURE_INDEX_1
-#define index_arch_Prefer_No_VZEROUPPER PREFERRED_FEATURE_INDEX_1
-#define index_arch_Prefer_ERMS PREFERRED_FEATURE_INDEX_1
-#define index_arch_Prefer_No_AVX512 PREFERRED_FEATURE_INDEX_1
-#define index_arch_MathVec_Prefer_No_AVX512 PREFERRED_FEATURE_INDEX_1
-#define index_arch_Prefer_FSRM PREFERRED_FEATURE_INDEX_1
-
-/* XCR0 Feature flags. */
-#define bit_XMM_state (1u << 1)
-#define bit_YMM_state (1u << 2)
-#define bit_Opmask_state (1u << 5)
-#define bit_ZMM0_15_state (1u << 6)
-#define bit_ZMM16_31_state (1u << 7)
-#define bit_XTILECFG_state (1u << 17)
-#define bit_XTILEDATA_state (1u << 18)
-
-# if defined (_LIBC) && !IS_IN (nonlib)
-/* Unused for x86. */
-# define INIT_ARCH()
-# define __get_cpu_features() (&GLRO(dl_x86_cpu_features))
-# endif
-
-#ifdef __x86_64__
-# define HAS_CPUID 1
-#elif (defined __i586__ || defined __pentium__ \
- || defined __geode__ || defined __k6__)
-# define HAS_CPUID 1
-# define HAS_I586 1
-# define HAS_I686 HAS_ARCH_FEATURE (I686)
-#elif defined __i486__
-# define HAS_CPUID 0
-# define HAS_I586 HAS_ARCH_FEATURE (I586)
-# define HAS_I686 HAS_ARCH_FEATURE (I686)
-#else
-# define HAS_CPUID 1
-# define HAS_I586 1
-# define HAS_I686 1
-#endif
-
-#endif /* cpu_features_h */
+#endif /* _SYS_PLATFORM_X86_H */
diff --git a/sysdeps/x86/tst-cpu-features-cpuinfo.c b/sysdeps/x86/tst-cpu-features-cpuinfo.c
new file mode 100644
index 0000000000000000..96277284d15a0690
--- /dev/null
+++ b/sysdeps/x86/tst-cpu-features-cpuinfo.c
@@ -0,0 +1,250 @@
+/* Test CPU feature data against /proc/cpuinfo.
+ This file is part of the GNU C Library.
+ Copyright (C) 2012-2020 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
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <sys/platform/x86.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static char *cpu_flags;
+
+/* Search for flags in /proc/cpuinfo and store line
+ in cpu_flags. */
+void
+get_cpuinfo (void)
+{
+ FILE *f;
+ char *line = NULL;
+ size_t len = 0;
+ ssize_t read;
+
+ f = fopen ("/proc/cpuinfo", "r");
+ if (f == NULL)
+ {
+ printf ("cannot open /proc/cpuinfo\n");
+ exit (1);
+ }
+
+ while ((read = getline (&line, &len, f)) != -1)
+ {
+ if (strncmp (line, "flags", 5) == 0)
+ {
+ cpu_flags = strdup (line);
+ break;
+ }
+ }
+ fclose (f);
+ free (line);
+}
+
+int
+check_proc (const char *proc_name, int flag, int usable, const char *name)
+{
+ int found = 0;
+
+ printf ("Checking %s:\n", name);
+ if (!usable)
+ {
+ printf (" %s: insufficient usable info, skipped\n", name);
+ return 0;
+ }
+ printf (" %s: %d\n", name, flag);
+ if (strstr (cpu_flags, proc_name) != NULL)
+ found = 1;
+ printf (" cpuinfo (%s): %d\n", proc_name, found);
+
+ if (found != flag)
+ printf (" *** failure ***\n");
+
+ return (found != flag);
+}
+
+#define CHECK_PROC(str, name) \
+ check_proc (#str, HAS_CPU_FEATURE (name), CPU_FEATURE_USABLE (name), \
+ "HAS_CPU_FEATURE (" #name ")");
+
+static int
+do_test (int argc, char **argv)
+{
+ int fails = 0;
+
+ get_cpuinfo ();
+ fails += CHECK_PROC (acpi, ACPI);
+ fails += CHECK_PROC (adx, ADX);
+ fails += CHECK_PROC (apic, APIC);
+ fails += CHECK_PROC (aes, AES);
+ fails += CHECK_PROC (amx_bf16, AMX_BF16);
+ fails += CHECK_PROC (amx_int8, AMX_INT8);
+ fails += CHECK_PROC (amx_tile, AMX_TILE);
+ fails += CHECK_PROC (arch_capabilities, ARCH_CAPABILITIES);
+ fails += CHECK_PROC (avx, AVX);
+ fails += CHECK_PROC (avx2, AVX2);
+ fails += CHECK_PROC (avx512_4fmaps, AVX512_4FMAPS);
+ fails += CHECK_PROC (avx512_4vnniw, AVX512_4VNNIW);
+ fails += CHECK_PROC (avx512_bf16, AVX512_BF16);
+ fails += CHECK_PROC (avx512_bitalg, AVX512_BITALG);
+ fails += CHECK_PROC (avx512ifma, AVX512_IFMA);
+ fails += CHECK_PROC (avx512_vbmi, AVX512_VBMI);
+ fails += CHECK_PROC (avx512_vbmi2, AVX512_VBMI2);
+ fails += CHECK_PROC (avx512_vnni, AVX512_VNNI);
+ fails += CHECK_PROC (avx512_vp2intersect, AVX512_VP2INTERSECT);
+ fails += CHECK_PROC (avx512_vpopcntdq, AVX512_VPOPCNTDQ);
+ fails += CHECK_PROC (avx512bw, AVX512BW);
+ fails += CHECK_PROC (avx512cd, AVX512CD);
+ fails += CHECK_PROC (avx512er, AVX512ER);
+ fails += CHECK_PROC (avx512dq, AVX512DQ);
+ fails += CHECK_PROC (avx512f, AVX512F);
+ fails += CHECK_PROC (avx512pf, AVX512PF);
+ fails += CHECK_PROC (avx512vl, AVX512VL);
+ fails += CHECK_PROC (bmi1, BMI1);
+ fails += CHECK_PROC (bmi2, BMI2);
+ fails += CHECK_PROC (cldemote, CLDEMOTE);
+ fails += CHECK_PROC (clflushopt, CLFLUSHOPT);
+ fails += CHECK_PROC (clflush, CLFSH);
+ fails += CHECK_PROC (clwb, CLWB);
+ fails += CHECK_PROC (cmov, CMOV);
+ fails += CHECK_PROC (cx16, CMPXCHG16B);
+ fails += CHECK_PROC (cnxt_id, CNXT_ID);
+ fails += CHECK_PROC (core_capabilities, CORE_CAPABILITIES);
+ fails += CHECK_PROC (cx8, CX8);
+ fails += CHECK_PROC (dca, DCA);
+ fails += CHECK_PROC (de, DE);
+ fails += CHECK_PROC (zero_fcs_fds, DEPR_FPU_CS_DS);
+ fails += CHECK_PROC (ds, DS);
+ fails += CHECK_PROC (ds_cpl, DS_CPL);
+ fails += CHECK_PROC (dtes64, DTES64);
+ fails += CHECK_PROC (est, EIST);
+ fails += CHECK_PROC (enqcmd, ENQCMD);
+ fails += CHECK_PROC (erms, ERMS);
+ fails += CHECK_PROC (f16c, F16C);
+ fails += CHECK_PROC (fma, FMA);
+ fails += CHECK_PROC (fma4, FMA4);
+ fails += CHECK_PROC (fpu, FPU);
+ fails += CHECK_PROC (fsgsbase, FSGSBASE);
+ fails += CHECK_PROC (fsrm, FSRM);
+ fails += CHECK_PROC (fxsr, FXSR);
+ fails += CHECK_PROC (gfni, GFNI);
+ fails += CHECK_PROC (hle, HLE);
+ fails += CHECK_PROC (ht, HTT);
+ fails += CHECK_PROC (hybrid, HYBRID);
+ fails += CHECK_PROC (ibrs, IBRS_IBPB);
+ fails += CHECK_PROC (ibt, IBT);
+ fails += CHECK_PROC (invariant_tsc, INVARIANT_TSC);
+ fails += CHECK_PROC (invpcid, INVPCID);
+ fails += CHECK_PROC (flush_l1d, L1D_FLUSH);
+ fails += CHECK_PROC (lahf_lm, LAHF64_SAHF64);
+ fails += CHECK_PROC (lm, LM);
+ fails += CHECK_PROC (lwp, LWP);
+ fails += CHECK_PROC (abm, LZCNT);
+ fails += CHECK_PROC (mca, MCA);
+ fails += CHECK_PROC (mce, MCE);
+ fails += CHECK_PROC (md_clear, MD_CLEAR);
+ fails += CHECK_PROC (mmx, MMX);
+ fails += CHECK_PROC (monitor, MONITOR);
+ fails += CHECK_PROC (movbe, MOVBE);
+ fails += CHECK_PROC (movdiri, MOVDIRI);
+ fails += CHECK_PROC (movdir64b, MOVDIR64B);
+ fails += CHECK_PROC (mpx, MPX);
+ fails += CHECK_PROC (msr, MSR);
+ fails += CHECK_PROC (mtrr, MTRR);
+ fails += CHECK_PROC (nx, NX);
+ fails += CHECK_PROC (ospke, OSPKE);
+#if 0
+ /* NB: /proc/cpuinfo doesn't report this feature. */
+ fails += CHECK_PROC (osxsave, OSXSAVE);
+#endif
+ fails += CHECK_PROC (pae, PAE);
+ fails += CHECK_PROC (pdpe1gb, PAGE1GB);
+ fails += CHECK_PROC (pat, PAT);
+ fails += CHECK_PROC (pbe, PBE);
+ fails += CHECK_PROC (pcid, PCID);
+ fails += CHECK_PROC (pclmulqdq, PCLMULQDQ);
+ fails += CHECK_PROC (pconfig, PCONFIG);
+ fails += CHECK_PROC (pdcm, PDCM);
+ fails += CHECK_PROC (pge, PGE);
+ fails += CHECK_PROC (pks, PKS);
+ fails += CHECK_PROC (pku, PKU);
+ fails += CHECK_PROC (popcnt, POPCNT);
+ fails += CHECK_PROC (3dnowprefetch, PREFETCHW);
+ fails += CHECK_PROC (prefetchwt1, PREFETCHWT1);
+ fails += CHECK_PROC (pse, PSE);
+ fails += CHECK_PROC (pse36, PSE_36);
+ fails += CHECK_PROC (psn, PSN);
+ fails += CHECK_PROC (rdpid, RDPID);
+ fails += CHECK_PROC (rdrand, RDRAND);
+ fails += CHECK_PROC (rdseed, RDSEED);
+ fails += CHECK_PROC (rdt_a, RDT_A);
+ fails += CHECK_PROC (cqm, RDT_M);
+ fails += CHECK_PROC (rdtscp, RDTSCP);
+ fails += CHECK_PROC (rtm, RTM);
+ fails += CHECK_PROC (sdbg, SDBG);
+ fails += CHECK_PROC (sep, SEP);
+ fails += CHECK_PROC (serialize, SERIALIZE);
+ fails += CHECK_PROC (sgx, SGX);
+ fails += CHECK_PROC (sgx_lc, SGX_LC);
+ fails += CHECK_PROC (sha_ni, SHA);
+ fails += CHECK_PROC (shstk, SHSTK);
+ fails += CHECK_PROC (smap, SMAP);
+ fails += CHECK_PROC (smep, SMEP);
+ fails += CHECK_PROC (smx, SMX);
+ fails += CHECK_PROC (ss, SS);
+ fails += CHECK_PROC (ssbd, SSBD);
+ fails += CHECK_PROC (sse, SSE);
+ fails += CHECK_PROC (sse2, SSE2);
+ fails += CHECK_PROC (sse3, SSE3);
+ fails += CHECK_PROC (sse4_1, SSE4_1);
+ fails += CHECK_PROC (sse4_2, SSE4_2);
+ fails += CHECK_PROC (sse4a, SSE4A);
+ fails += CHECK_PROC (ssse3, SSSE3);
+ fails += CHECK_PROC (stibp, STIBP);
+ fails += CHECK_PROC (svm, SVM);
+#ifdef __x86_64__
+ /* NB: SYSCALL_SYSRET is 64-bit only. */
+ fails += CHECK_PROC (syscall, SYSCALL_SYSRET);
+#endif
+ fails += CHECK_PROC (tbm, TBM);
+ fails += CHECK_PROC (tm, TM);
+ fails += CHECK_PROC (tm2, TM2);
+ fails += CHECK_PROC (intel_pt, TRACE);
+ fails += CHECK_PROC (tsc, TSC);
+ fails += CHECK_PROC (tsc_adjust, TSC_ADJUST);
+ fails += CHECK_PROC (tsc_deadline, TSC_DEADLINE);
+ fails += CHECK_PROC (tsxldtrk, TSXLDTRK);
+ fails += CHECK_PROC (umip, UMIP);
+ fails += CHECK_PROC (vaes, VAES);
+ fails += CHECK_PROC (vme, VME);
+ fails += CHECK_PROC (vmx, VMX);
+ fails += CHECK_PROC (vpclmulqdq, VPCLMULQDQ);
+ fails += CHECK_PROC (waitpkg, WAITPKG);
+ fails += CHECK_PROC (wbnoinvd, WBNOINVD);
+ fails += CHECK_PROC (x2apic, X2APIC);
+ fails += CHECK_PROC (xfd, XFD);
+ fails += CHECK_PROC (xgetbv1, XGETBV_ECX_1);
+ fails += CHECK_PROC (xop, XOP);
+ fails += CHECK_PROC (xsave, XSAVE);
+ fails += CHECK_PROC (xsavec, XSAVEC);
+ fails += CHECK_PROC (xsaveopt, XSAVEOPT);
+ fails += CHECK_PROC (xsaves, XSAVES);
+ fails += CHECK_PROC (xtpr, XTPRUPDCTRL);
+
+ printf ("%d differences between /proc/cpuinfo and glibc code.\n", fails);
+
+ return (fails != 0);
+}
+
+#include "../../../test-skeleton.c"
diff --git a/sysdeps/x86/tst-cpu-features-supports.c b/sysdeps/x86/tst-cpu-features-supports.c
new file mode 100644
index 0000000000000000..bf881b531f4bc2ed
--- /dev/null
+++ b/sysdeps/x86/tst-cpu-features-supports.c
@@ -0,0 +1,192 @@
+/* Test CPU feature data against __builtin_cpu_supports.
+ This file is part of the GNU C Library.
+ Copyright (C) 2020 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
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <sys/platform/x86.h>
+#include <stdio.h>
+
+int
+check_supports (int supports, int usable, const char *supports_name,
+ const char *name)
+{
+ printf ("Checking %s:\n", name);
+ printf (" %s: %d\n", name, usable);
+ printf (" __builtin_cpu_supports (%s): %d\n",
+ supports_name, supports);
+
+ if ((supports != 0) != (usable != 0))
+ {
+ printf (" *** failure ***\n");
+ return 1;
+ }
+
+ return 0;
+}
+
+#define CHECK_SUPPORTS(str, name) \
+ check_supports (__builtin_cpu_supports (#str), \
+ CPU_FEATURE_USABLE (name), \
+ #str, "HAS_CPU_FEATURE (" #name ")");
+
+static int
+do_test (int argc, char **argv)
+{
+ int fails = 0;
+
+#if __GNUC_PREREQ (11, 0)
+ fails += CHECK_SUPPORTS (adx, ADX);
+#endif
+#if __GNUC_PREREQ (6, 0)
+ fails += CHECK_SUPPORTS (aes, AES);
+#endif
+#if __GNUC_PREREQ (11, 1)
+ fails += CHECK_SUPPORTS (amx_bf16, AMX_BF16);
+ fails += CHECK_SUPPORTS (amx_int8, AMX_INT8);
+ fails += CHECK_SUPPORTS (amx_tile, AMX_TILE);
+#endif
+ fails += CHECK_SUPPORTS (avx, AVX);
+ fails += CHECK_SUPPORTS (avx2, AVX2);
+#if __GNUC_PREREQ (7, 0)
+ fails += CHECK_SUPPORTS (avx5124fmaps, AVX512_4FMAPS);
+ fails += CHECK_SUPPORTS (avx5124vnniw, AVX512_4VNNIW);
+#endif
+#if __GNUC_PREREQ (10, 0)
+ fails += CHECK_SUPPORTS (avx512bf16, AVX512_BF16);
+#endif
+#if __GNUC_PREREQ (8, 0)
+ fails += CHECK_SUPPORTS (avx512bitalg, AVX512_BITALG);
+#endif
+#if __GNUC_PREREQ (6, 0)
+ fails += CHECK_SUPPORTS (avx512ifma, AVX512_IFMA);
+ fails += CHECK_SUPPORTS (avx512vbmi, AVX512_VBMI);
+#endif
+#if __GNUC_PREREQ (8, 0)
+ fails += CHECK_SUPPORTS (avx512vbmi2, AVX512_VBMI2);
+ fails += CHECK_SUPPORTS (avx512vnni, AVX512_VNNI);
+#endif
+#if __GNUC_PREREQ (10, 0)
+ fails += CHECK_SUPPORTS (avx512vp2intersect, AVX512_VP2INTERSECT);
+#endif
+#if __GNUC_PREREQ (7, 0)
+ fails += CHECK_SUPPORTS (avx512vpopcntdq, AVX512_VPOPCNTDQ);
+#endif
+#if __GNUC_PREREQ (6, 0)
+ fails += CHECK_SUPPORTS (avx512bw, AVX512BW);
+ fails += CHECK_SUPPORTS (avx512cd, AVX512CD);
+ fails += CHECK_SUPPORTS (avx512er, AVX512ER);
+ fails += CHECK_SUPPORTS (avx512dq, AVX512DQ);
+#endif
+#if __GNUC_PREREQ (5, 0)
+ fails += CHECK_SUPPORTS (avx512f, AVX512F);
+#endif
+#if __GNUC_PREREQ (6, 0)
+ fails += CHECK_SUPPORTS (avx512pf, AVX512PF);
+ fails += CHECK_SUPPORTS (avx512vl, AVX512VL);
+#endif
+#if __GNUC_PREREQ (5, 0)
+ fails += CHECK_SUPPORTS (bmi, BMI1);
+ fails += CHECK_SUPPORTS (bmi2, BMI2);
+#endif
+#if __GNUC_PREREQ (11, 0)
+ fails += CHECK_SUPPORTS (cldemote, CLDEMOTE);
+ fails += CHECK_SUPPORTS (clflushopt, CLFLUSHOPT);
+ fails += CHECK_SUPPORTS (clwb, CLWB);
+#endif
+ fails += CHECK_SUPPORTS (cmov, CMOV);
+#if __GNUC_PREREQ (11, 0)
+ fails += CHECK_SUPPORTS (cmpxchg16b, CMPXCHG16B);
+ fails += CHECK_SUPPORTS (cmpxchg8b, CX8);
+ fails += CHECK_SUPPORTS (enqcmd, ENQCMD);
+ fails += CHECK_SUPPORTS (f16c, F16C);
+#endif
+#if __GNUC_PREREQ (4, 9)
+ fails += CHECK_SUPPORTS (fma, FMA);
+ fails += CHECK_SUPPORTS (fma4, FMA4);
+#endif
+#if __GNUC_PREREQ (11, 0)
+ fails += CHECK_SUPPORTS (fsgsbase, FSGSBASE);
+ fails += CHECK_SUPPORTS (fxsave, FXSR);
+#endif
+#if __GNUC_PREREQ (8, 0)
+ fails += CHECK_SUPPORTS (gfni, GFNI);
+#endif
+#if __GNUC_PREREQ (11, 0)
+ fails += CHECK_SUPPORTS (hle, HLE);
+ fails += CHECK_SUPPORTS (ibt, IBT);
+ fails += CHECK_SUPPORTS (lahf_lm, LAHF64_SAHF64);
+ fails += CHECK_SUPPORTS (lm, LM);
+ fails += CHECK_SUPPORTS (lwp, LWP);
+ fails += CHECK_SUPPORTS (lzcnt, LZCNT);
+#endif
+ fails += CHECK_SUPPORTS (mmx, MMX);
+#if __GNUC_PREREQ (11, 0)
+ fails += CHECK_SUPPORTS (movbe, MOVBE);
+ fails += CHECK_SUPPORTS (movdiri, MOVDIRI);
+ fails += CHECK_SUPPORTS (movdir64b, MOVDIR64B);
+ fails += CHECK_SUPPORTS (osxsave, OSXSAVE);
+ fails += CHECK_SUPPORTS (pconfig, PCONFIG);
+ fails += CHECK_SUPPORTS (pku, PKU);
+#endif
+ fails += CHECK_SUPPORTS (popcnt, POPCNT);
+#if __GNUC_PREREQ (11, 0)
+ fails += CHECK_SUPPORTS (prefetchwt1, PREFETCHWT1);
+ fails += CHECK_SUPPORTS (rdpid, RDPID);
+ fails += CHECK_SUPPORTS (rdrnd, RDRAND);
+ fails += CHECK_SUPPORTS (rdseed, RDSEED);
+ fails += CHECK_SUPPORTS (rtm, RTM);
+ fails += CHECK_SUPPORTS (serialize, SERIALIZE);
+ fails += CHECK_SUPPORTS (sha, SHA);
+ fails += CHECK_SUPPORTS (shstk, SHSTK);
+#endif
+ fails += CHECK_SUPPORTS (sse, SSE);
+ fails += CHECK_SUPPORTS (sse2, SSE2);
+ fails += CHECK_SUPPORTS (sse3, SSE3);
+ fails += CHECK_SUPPORTS (sse4.1, SSE4_1);
+ fails += CHECK_SUPPORTS (sse4.2, SSE4_2);
+#if __GNUC_PREREQ (4, 9)
+ fails += CHECK_SUPPORTS (sse4a, SSE4A);
+#endif
+ fails += CHECK_SUPPORTS (ssse3, SSSE3);
+#if __GNUC_PREREQ (11, 0)
+ fails += CHECK_SUPPORTS (tbm, TBM);
+ fails += CHECK_SUPPORTS (tsxldtrk, TSXLDTRK);
+ fails += CHECK_SUPPORTS (vaes, VAES);
+#endif
+#if __GNUC_PREREQ (8, 0)
+ fails += CHECK_SUPPORTS (vpclmulqdq, VPCLMULQDQ);
+#endif
+#if __GNUC_PREREQ (11, 0)
+ fails += CHECK_SUPPORTS (waitpkg, WAITPKG);
+ fails += CHECK_SUPPORTS (wbnoinvd, WBNOINVD);
+#endif
+#if __GNUC_PREREQ (4, 9)
+ fails += CHECK_SUPPORTS (xop, XOP);
+#endif
+#if __GNUC_PREREQ (11, 0)
+ fails += CHECK_SUPPORTS (xsave, XSAVE);
+ fails += CHECK_SUPPORTS (xsavec, XSAVEC);
+ fails += CHECK_SUPPORTS (xsaveopt, XSAVEOPT);
+ fails += CHECK_SUPPORTS (xsaves, XSAVES);
+#endif
+
+ printf ("%d differences between __builtin_cpu_supports and glibc code.\n",
+ fails);
+
+ return (fails != 0);
+}
+
+#include "../../../test-skeleton.c"
diff --git a/sysdeps/x86/tst-get-cpu-features.c b/sysdeps/x86/tst-get-cpu-features.c
index 582b125a2dad3f21..95e0d33f6c7eeace 100644
--- a/sysdeps/x86/tst-get-cpu-features.c
+++ b/sysdeps/x86/tst-get-cpu-features.c
@@ -1,5 +1,5 @@
-/* Test case for x86 __get_cpu_features interface
- Copyright (C) 2015-2018 Free Software Foundation, Inc.
+/* Test case for __x86_get_cpu_features interface
+ Copyright (C) 2015-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -18,7 +18,7 @@
#include <stdlib.h>
#include <stdio.h>
-#include <cpu-features.h>
+#include <sys/platform/x86.h>
#include <support/check.h>
#define CHECK_CPU_FEATURE(name) \
@@ -44,7 +44,7 @@ static const char * const cpu_kinds[] =
static int
do_test (void)
{
- const struct cpu_features *cpu_features = __get_cpu_features ();
+ const struct cpu_features *cpu_features = __x86_get_cpu_features (0);
switch (cpu_features->basic.kind)
{
diff --git a/sysdeps/x86_64/fpu/math-tests-arch.h b/sysdeps/x86_64/fpu/math-tests-arch.h
index 61955d70863321fd..c908eac6b4fff16d 100644
--- a/sysdeps/x86_64/fpu/math-tests-arch.h
+++ b/sysdeps/x86_64/fpu/math-tests-arch.h
@@ -16,7 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#include <cpu-features.h>
+#include <sys/platform/x86.h>
#if defined REQUIRE_AVX
diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index 395e432c092ca17c..9477538af46787a5 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -1,7 +1,3 @@
-ifeq ($(subdir),csu)
-tests += test-multiarch
-endif
-
ifeq ($(subdir),string)
sysdep_routines += strncat-c stpncpy-c strncpy-c \
diff --git a/sysdeps/x86_64/multiarch/test-multiarch.c b/sysdeps/x86_64/multiarch/test-multiarch.c
deleted file mode 100644
index cc2ea56a6753402d..0000000000000000
--- a/sysdeps/x86_64/multiarch/test-multiarch.c
+++ /dev/null
@@ -1,96 +0,0 @@
-/* Test CPU feature data.
- This file is part of the GNU C Library.
- Copyright (C) 2012-2018 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
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <cpu-features.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-static char *cpu_flags;
-
-/* Search for flags in /proc/cpuinfo and store line
- in cpu_flags. */
-void
-get_cpuinfo (void)
-{
- FILE *f;
- char *line = NULL;
- size_t len = 0;
- ssize_t read;
-
- f = fopen ("/proc/cpuinfo", "r");
- if (f == NULL)
- {
- printf ("cannot open /proc/cpuinfo\n");
- exit (1);
- }
-
- while ((read = getline (&line, &len, f)) != -1)
- {
- if (strncmp (line, "flags", 5) == 0)
- {
- cpu_flags = strdup (line);
- break;
- }
- }
- fclose (f);
- free (line);
-}
-
-int
-check_proc (const char *proc_name, int flag, const char *name)
-{
- int found = 0;
-
- printf ("Checking %s:\n", name);
- printf (" init-arch %d\n", flag);
- if (strstr (cpu_flags, proc_name) != NULL)
- found = 1;
- printf (" cpuinfo (%s) %d\n", proc_name, found);
-
- if (found != flag)
- printf (" *** failure ***\n");
-
- return (found != flag);
-}
-
-static int
-do_test (int argc, char **argv)
-{
- int fails;
-
- get_cpuinfo ();
- fails = check_proc ("avx", CPU_FEATURE_USABLE (AVX),
- "CPU_FEATURE_USABLE (AVX)");
- fails += check_proc ("fma4", CPU_FEATURE_USABLE (FMA4),
- "CPU_FEATURE_USABLE (FMA4)");
- fails += check_proc ("sse4_2", CPU_FEATURE_USABLE (SSE4_2),
- "CPU_FEATURE_USABLE (SSE4_2)");
- fails += check_proc ("sse4_1", CPU_FEATURE_USABLE (SSE4_1)
- , "CPU_FEATURE_USABLE (SSE4_1)");
- fails += check_proc ("ssse3", CPU_FEATURE_USABLE (SSSE3),
- "CPU_FEATURE_USABLE (SSSE3)");
- fails += check_proc ("popcnt", CPU_FEATURE_USABLE (POPCNT),
- "CPU_FEATURE_USABLE (POPCNT)");
-
- printf ("%d differences between /proc/cpuinfo and glibc code.\n", fails);
-
- return (fails != 0);
-}
-
-#include "../../../test-skeleton.c"
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