70 lines
2.6 KiB
C
70 lines
2.6 KiB
C
|
/* Get x86 ISA level.
|
||
|
|
This file is part of the GNU C Library.
|
||
|
|
Copyright (C) 2020-2022 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 <elf.h>
|
||
|
|
#include <cpu-features.h>
|
||
|
|
|
||
|
|
/* Get GNU_PROPERTY_X86_ISA_1_BASELINE and GNU_PROPERTY_X86_ISA_1_V[234]
|
||
|
|
ISA level. */
|
||
|
|
|
||
|
|
static unsigned int
|
||
|
|
get_isa_level (const struct cpu_features *cpu_features)
|
||
|
|
{
|
||
|
|
unsigned int isa_level = 0;
|
||
|
|
|
||
|
|
if (CPU_FEATURE_USABLE_P (cpu_features, CMOV)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, CX8)
|
||
|
|
&& CPU_FEATURE_CPU_P (cpu_features, FPU)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, FXSR)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, MMX)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, SSE)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, SSE2))
|
||
|
|
{
|
||
|
|
isa_level = GNU_PROPERTY_X86_ISA_1_BASELINE;
|
||
|
|
if (CPU_FEATURE_USABLE_P (cpu_features, CMPXCHG16B)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, LAHF64_SAHF64)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, POPCNT)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, SSE3)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, SSSE3)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, SSE4_1)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, SSE4_2))
|
||
|
|
{
|
||
|
|
isa_level |= GNU_PROPERTY_X86_ISA_1_V2;
|
||
|
|
if (CPU_FEATURE_USABLE_P (cpu_features, AVX)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, AVX2)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, BMI1)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, BMI2)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, F16C)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, FMA)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, LZCNT)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, MOVBE))
|
||
|
|
{
|
||
|
|
isa_level |= GNU_PROPERTY_X86_ISA_1_V3;
|
||
|
|
if (CPU_FEATURE_USABLE_P (cpu_features, AVX512F)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, AVX512BW)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, AVX512CD)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, AVX512DQ)
|
||
|
|
&& CPU_FEATURE_USABLE_P (cpu_features, AVX512VL))
|
||
|
|
isa_level |= GNU_PROPERTY_X86_ISA_1_V4;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return isa_level;
|
||
|
|
}
|