mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-21 12:30:06 +00:00
x86: Check ifunc resolver with CPU_FEATURE_USABLE [BZ #27072]
Check ifunc resolver with CPU_FEATURE_USABLE and tunables in dynamic and static executables to verify that CPUID features are initialized early in static PIE. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This commit is contained in:
parent
46c1c765d1
commit
7a5ab88e21
@ -10,6 +10,16 @@ sysdep_headers += sys/platform/x86.h
|
||||
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
|
||||
ifeq (yes,$(have-ifunc))
|
||||
tests += \
|
||||
tst-ifunc-isa-1 \
|
||||
tst-ifunc-isa-1-static \
|
||||
tst-ifunc-isa-2 \
|
||||
tst-ifunc-isa-2-static
|
||||
tests-static += \
|
||||
tst-ifunc-isa-1-static \
|
||||
tst-ifunc-isa-2-static
|
||||
endif
|
||||
ifeq (yes,$(enable-x86-isa-level))
|
||||
tests += tst-isa-level-1
|
||||
modules-names += tst-isa-level-mod-1-baseline \
|
||||
@ -40,6 +50,10 @@ $(objpfx)tst-isa-level-1.out: $(objpfx)tst-isa-level-mod-1-baseline.so \
|
||||
$(objpfx)tst-isa-level-mod-1-v3.so \
|
||||
$(objpfx)tst-isa-level-mod-1-v4.so
|
||||
endif
|
||||
ifneq ($(have-tunables),no)
|
||||
tst-ifunc-isa-2-ENV = GLIBC_TUNABLES=glibc.cpu.hwcaps=-SSE4_2,-AVX,-AVX2,-AVX512F
|
||||
tst-ifunc-isa-2-static-ENV = $(tst-ifunc-isa-2-ENV)
|
||||
endif
|
||||
endif
|
||||
|
||||
ifeq ($(subdir),math)
|
||||
|
1
sysdeps/x86/tst-ifunc-isa-1-static.c
Normal file
1
sysdeps/x86/tst-ifunc-isa-1-static.c
Normal file
@ -0,0 +1 @@
|
||||
#include "tst-ifunc-isa-1.c"
|
30
sysdeps/x86/tst-ifunc-isa-1.c
Normal file
30
sysdeps/x86/tst-ifunc-isa-1.c
Normal file
@ -0,0 +1,30 @@
|
||||
/* Check IFUNC resolver with CPU_FEATURE_USABLE.
|
||||
Copyright (C) 2021 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/>. */
|
||||
|
||||
#include <stdlib.h>
|
||||
#include "tst-ifunc-isa.h"
|
||||
|
||||
static int
|
||||
do_test (void)
|
||||
{
|
||||
enum isa value = foo ();
|
||||
enum isa expected = get_isa ();
|
||||
return value == expected ? EXIT_SUCCESS : EXIT_FAILURE;
|
||||
}
|
||||
|
||||
#include <support/test-driver.c>
|
1
sysdeps/x86/tst-ifunc-isa-2-static.c
Normal file
1
sysdeps/x86/tst-ifunc-isa-2-static.c
Normal file
@ -0,0 +1 @@
|
||||
#include "tst-ifunc-isa-2.c"
|
34
sysdeps/x86/tst-ifunc-isa-2.c
Normal file
34
sysdeps/x86/tst-ifunc-isa-2.c
Normal file
@ -0,0 +1,34 @@
|
||||
/* Check IFUNC resolver with CPU_FEATURE_USABLE and tunables.
|
||||
Copyright (C) 2021 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/>. */
|
||||
|
||||
#include <stdlib.h>
|
||||
#include "tst-ifunc-isa.h"
|
||||
#include <support/test-driver.h>
|
||||
|
||||
static int
|
||||
do_test (void)
|
||||
{
|
||||
/* CPU must support SSE2. */
|
||||
if (!__builtin_cpu_supports ("sse2"))
|
||||
return EXIT_UNSUPPORTED;
|
||||
enum isa value = foo ();
|
||||
/* All ISAs, but SSE2, are disabled by tunables. */
|
||||
return value == sse2 ? EXIT_SUCCESS : EXIT_FAILURE;
|
||||
}
|
||||
|
||||
#include <support/test-driver.c>
|
104
sysdeps/x86/tst-ifunc-isa.h
Normal file
104
sysdeps/x86/tst-ifunc-isa.h
Normal file
@ -0,0 +1,104 @@
|
||||
/* IFUNC resolver with CPU_FEATURE_USABLE.
|
||||
Copyright (C) 2021 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/>. */
|
||||
|
||||
#include <sys/platform/x86.h>
|
||||
|
||||
enum isa
|
||||
{
|
||||
none,
|
||||
sse2,
|
||||
sse4_2,
|
||||
avx,
|
||||
avx2,
|
||||
avx512f
|
||||
};
|
||||
|
||||
enum isa
|
||||
get_isa (void)
|
||||
{
|
||||
if (CPU_FEATURE_USABLE (AVX512F))
|
||||
return avx512f;
|
||||
if (CPU_FEATURE_USABLE (AVX2))
|
||||
return avx2;
|
||||
if (CPU_FEATURE_USABLE (AVX))
|
||||
return avx;
|
||||
if (CPU_FEATURE_USABLE (SSE4_2))
|
||||
return sse4_2;
|
||||
if (CPU_FEATURE_USABLE (SSE2))
|
||||
return sse2;
|
||||
return none;
|
||||
}
|
||||
|
||||
static int
|
||||
isa_sse2 (void)
|
||||
{
|
||||
return sse2;
|
||||
}
|
||||
|
||||
static int
|
||||
isa_sse4_2 (void)
|
||||
{
|
||||
return sse4_2;
|
||||
}
|
||||
|
||||
static int
|
||||
isa_avx (void)
|
||||
{
|
||||
return avx;
|
||||
}
|
||||
|
||||
static int
|
||||
isa_avx2 (void)
|
||||
{
|
||||
return avx2;
|
||||
}
|
||||
|
||||
static int
|
||||
isa_avx512f (void)
|
||||
{
|
||||
return avx512f;
|
||||
}
|
||||
|
||||
static int
|
||||
isa_none (void)
|
||||
{
|
||||
return none;
|
||||
}
|
||||
|
||||
int foo (void) __attribute__ ((ifunc ("foo_ifunc")));
|
||||
|
||||
void *
|
||||
foo_ifunc (void)
|
||||
{
|
||||
switch (get_isa ())
|
||||
{
|
||||
case avx512f:
|
||||
return isa_avx512f;
|
||||
case avx2:
|
||||
return isa_avx2;
|
||||
case avx:
|
||||
return isa_avx;
|
||||
case sse4_2:
|
||||
return isa_sse4_2;
|
||||
case sse2:
|
||||
return isa_sse2;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
return isa_none;
|
||||
}
|
Loading…
Reference in New Issue
Block a user