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.
2020-06-30 09:30:54 +08:00
|
|
|
/* Test CPU feature data against /proc/cpuinfo.
|
|
|
|
|
This file is part of the GNU C Library.
|
2021-01-03 03:32:25 +08:00
|
|
|
Copyright (C) 2012-2021 Free Software Foundation, Inc.
|
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.
2020-06-30 09:30:54 +08:00
|
|
|
|
|
|
|
|
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/>. */
|
|
|
|
|
|
2021-06-23 03:41:28 +08:00
|
|
|
#include <cpu-features.h>
|
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.
2020-06-30 09:30:54 +08:00
|
|
|
#include <stdio.h>
|
|
|
|
|
#include <stdlib.h>
|
|
|
|
|
#include <string.h>
|
2021-06-23 03:41:28 +08:00
|
|
|
#include <stdbool.h>
|
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.
2020-06-30 09:30:54 +08:00
|
|
|
|
|
|
|
|
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
|
2021-01-22 03:12:30 +08:00
|
|
|
check_proc (const char *proc_name, const char *search_name, int flag,
|
|
|
|
|
int usable, const char *name)
|
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.
2020-06-30 09:30:54 +08:00
|
|
|
{
|
|
|
|
|
int found = 0;
|
|
|
|
|
|
|
|
|
|
printf ("Checking %s:\n", name);
|
2021-01-22 03:12:30 +08:00
|
|
|
printf (" %s: %d\n", name, flag);
|
|
|
|
|
char *str = strstr (cpu_flags, search_name);
|
|
|
|
|
if (str == NULL)
|
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.
2020-06-30 09:30:54 +08:00
|
|
|
{
|
2021-01-22 03:12:30 +08:00
|
|
|
/* If searching for " XXX " failed, try " XXX\n". */
|
|
|
|
|
size_t len = strlen (search_name);
|
|
|
|
|
char buffer[80];
|
|
|
|
|
if (len >= sizeof buffer)
|
|
|
|
|
abort ();
|
|
|
|
|
memcpy (buffer, search_name, len + 1);
|
|
|
|
|
buffer[len - 1] = '\n';
|
|
|
|
|
str = strstr (cpu_flags, buffer);
|
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.
2020-06-30 09:30:54 +08:00
|
|
|
}
|
2021-01-22 03:12:30 +08:00
|
|
|
if (str != NULL)
|
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.
2020-06-30 09:30:54 +08:00
|
|
|
found = 1;
|
|
|
|
|
printf (" cpuinfo (%s): %d\n", proc_name, found);
|
|
|
|
|
|
|
|
|
|
if (found != flag)
|
2021-01-22 03:12:30 +08:00
|
|
|
{
|
|
|
|
|
if (found || usable)
|
|
|
|
|
printf (" *** failure ***\n");
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
printf (" *** missing in /proc/cpuinfo ***\n");
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
}
|
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.
2020-06-30 09:30:54 +08:00
|
|
|
|
|
|
|
|
return (found != flag);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#define CHECK_PROC(str, name) \
|
2021-01-22 03:12:30 +08:00
|
|
|
check_proc (#str, " "#str" ", HAS_CPU_FEATURE (name), \
|
|
|
|
|
CPU_FEATURE_USABLE (name), \
|
|
|
|
|
"HAS_CPU_FEATURE (" #name ")")
|
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.
2020-06-30 09:30:54 +08:00
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
do_test (int argc, char **argv)
|
|
|
|
|
{
|
|
|
|
|
int fails = 0;
|
2021-06-23 03:41:28 +08:00
|
|
|
const struct cpu_features *cpu_features = __get_cpu_features ();
|
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.
2020-06-30 09:30:54 +08:00
|
|
|
|
|
|
|
|
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);
|
2021-01-22 03:12:30 +08:00
|
|
|
fails += CHECK_PROC (avx512vbmi, AVX512_VBMI);
|
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.
2020-06-30 09:30:54 +08:00
|
|
|
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);
|
2021-01-22 03:12:30 +08:00
|
|
|
fails += CHECK_PROC (dts, DS);
|
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.
2020-06-30 09:30:54 +08:00
|
|
|
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);
|
2021-06-23 03:41:28 +08:00
|
|
|
if (cpu_features->basic.kind == arch_kind_intel)
|
|
|
|
|
{
|
|
|
|
|
fails += CHECK_PROC (ibrs, IBRS_IBPB);
|
|
|
|
|
fails += CHECK_PROC (stibp, STIBP);
|
|
|
|
|
}
|
|
|
|
|
else if (cpu_features->basic.kind == arch_kind_amd)
|
|
|
|
|
{
|
|
|
|
|
fails += CHECK_PROC (ibpb, AMD_IBPB);
|
|
|
|
|
fails += CHECK_PROC (ibrs, AMD_IBRS);
|
|
|
|
|
fails += CHECK_PROC (stibp, AMD_STIBP);
|
|
|
|
|
}
|
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.
2020-06-30 09:30:54 +08:00
|
|
|
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);
|
2021-02-05 02:39:34 +08:00
|
|
|
fails += CHECK_PROC (ptwrite, PTWRITE);
|
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.
2020-06-30 09:30:54 +08:00
|
|
|
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);
|
2021-06-23 03:41:28 +08:00
|
|
|
if (cpu_features->basic.kind == arch_kind_intel)
|
|
|
|
|
fails += CHECK_PROC (ssbd, SSBD);
|
|
|
|
|
else if (cpu_features->basic.kind == arch_kind_amd)
|
|
|
|
|
fails += CHECK_PROC (ssbd, AMD_SSBD);
|
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.
2020-06-30 09:30:54 +08:00
|
|
|
fails += CHECK_PROC (sse, SSE);
|
|
|
|
|
fails += CHECK_PROC (sse2, SSE2);
|
2021-01-22 03:12:30 +08:00
|
|
|
fails += CHECK_PROC (pni, SSE3);
|
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.
2020-06-30 09:30:54 +08:00
|
|
|
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 (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);
|
2021-01-22 03:12:30 +08:00
|
|
|
fails += CHECK_PROC (tsc_deadline_timer, TSC_DEADLINE);
|
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.
2020-06-30 09:30:54 +08:00
|
|
|
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"
|
