mirror of
https://github.com/google/cpu_features.git
synced 2025-04-28 07:23:37 +02:00
d835b4958c
Add all missing features up to Linux v5.0. Features added: evtstrm, atomics, fphp, asimdhp, cpuid, asimdrdm, jscvt, fcma, lrcpc, dcpop, sha3, sm3, sm4, asimddp, sha512, sve, asimdfhm, dit, uscat, ilrcpc, flagm, ssbs, sb, paca, pacg.
229 lines
8.3 KiB
C
229 lines
8.3 KiB
C
// Copyright 2017 Google Inc.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include "cpuinfo_aarch64.h"
|
|
|
|
#include "internal/filesystem.h"
|
|
#include "internal/hwcaps.h"
|
|
#include "internal/stack_line_reader.h"
|
|
#include "internal/string_view.h"
|
|
#include "internal/unix_features_aggregator.h"
|
|
|
|
#include <assert.h>
|
|
#include <ctype.h>
|
|
|
|
DECLARE_SETTER(Aarch64Features, fp)
|
|
DECLARE_SETTER(Aarch64Features, asimd)
|
|
DECLARE_SETTER(Aarch64Features, evtstrm)
|
|
DECLARE_SETTER(Aarch64Features, aes)
|
|
DECLARE_SETTER(Aarch64Features, pmull)
|
|
DECLARE_SETTER(Aarch64Features, sha1)
|
|
DECLARE_SETTER(Aarch64Features, sha2)
|
|
DECLARE_SETTER(Aarch64Features, crc32)
|
|
DECLARE_SETTER(Aarch64Features, atomics)
|
|
DECLARE_SETTER(Aarch64Features, fphp)
|
|
DECLARE_SETTER(Aarch64Features, asimdhp)
|
|
DECLARE_SETTER(Aarch64Features, cpuid)
|
|
DECLARE_SETTER(Aarch64Features, asimdrdm)
|
|
DECLARE_SETTER(Aarch64Features, jscvt)
|
|
DECLARE_SETTER(Aarch64Features, fcma)
|
|
DECLARE_SETTER(Aarch64Features, lrcpc)
|
|
DECLARE_SETTER(Aarch64Features, dcpop)
|
|
DECLARE_SETTER(Aarch64Features, sha3)
|
|
DECLARE_SETTER(Aarch64Features, sm3)
|
|
DECLARE_SETTER(Aarch64Features, sm4)
|
|
DECLARE_SETTER(Aarch64Features, asimddp)
|
|
DECLARE_SETTER(Aarch64Features, sha512)
|
|
DECLARE_SETTER(Aarch64Features, sve)
|
|
DECLARE_SETTER(Aarch64Features, asimdfhm)
|
|
DECLARE_SETTER(Aarch64Features, dit)
|
|
DECLARE_SETTER(Aarch64Features, uscat)
|
|
DECLARE_SETTER(Aarch64Features, ilrcpc)
|
|
DECLARE_SETTER(Aarch64Features, flagm)
|
|
DECLARE_SETTER(Aarch64Features, ssbs)
|
|
DECLARE_SETTER(Aarch64Features, sb)
|
|
DECLARE_SETTER(Aarch64Features, paca)
|
|
DECLARE_SETTER(Aarch64Features, pacg)
|
|
|
|
static const CapabilityConfig kConfigs[] = {
|
|
[AARCH64_FP] = {{AARCH64_HWCAP_FP, 0}, "fp", &set_fp},
|
|
[AARCH64_ASIMD] = {{AARCH64_HWCAP_ASIMD, 0}, "asimd", &set_asimd},
|
|
[AARCH64_EVTSTRM] = {{AARCH64_HWCAP_EVTSTRM, 0}, "evtstrm", &set_evtstrm},
|
|
[AARCH64_AES] = {{AARCH64_HWCAP_AES, 0}, "aes", &set_aes},
|
|
[AARCH64_PMULL] = {{AARCH64_HWCAP_PMULL, 0}, "pmull", &set_pmull},
|
|
[AARCH64_SHA1] = {{AARCH64_HWCAP_SHA1, 0}, "sha1", &set_sha1},
|
|
[AARCH64_SHA2] = {{AARCH64_HWCAP_SHA2, 0}, "sha2", &set_sha2},
|
|
[AARCH64_CRC32] = {{AARCH64_HWCAP_CRC32, 0}, "crc32", &set_crc32},
|
|
[AARCH64_ATOMICS] = {{AARCH64_HWCAP_ATOMICS, 0}, "atomics", &set_atomics},
|
|
[AARCH64_FPHP] = {{AARCH64_HWCAP_FPHP, 0}, "fphp", &set_fphp},
|
|
[AARCH64_ASIMDHP] = {{AARCH64_HWCAP_ASIMDHP, 0}, "asimdhp", &set_asimdhp},
|
|
[AARCH64_CPUID] = {{AARCH64_HWCAP_CPUID, 0}, "cpuid", &set_cpuid},
|
|
[AARCH64_ASIMDRDM] = {{AARCH64_HWCAP_ASIMDRDM, 0}, "asimdrdm", &set_asimdrdm},
|
|
[AARCH64_JSCVT] = {{AARCH64_HWCAP_JSCVT, 0}, "jscvt", &set_jscvt},
|
|
[AARCH64_FCMA] = {{AARCH64_HWCAP_FCMA, 0}, "fcma", &set_fcma},
|
|
[AARCH64_LRCPC] = {{AARCH64_HWCAP_LRCPC, 0}, "lrcpc", &set_lrcpc},
|
|
[AARCH64_DCPOP] = {{AARCH64_HWCAP_DCPOP, 0}, "dcpop", &set_dcpop},
|
|
[AARCH64_SHA3] = {{AARCH64_HWCAP_SHA3, 0}, "sha3", &set_sha3},
|
|
[AARCH64_SM3] = {{AARCH64_HWCAP_SM3, 0}, "sm3", &set_sm3},
|
|
[AARCH64_SM4] = {{AARCH64_HWCAP_SM4, 0}, "sm4", &set_sm4},
|
|
[AARCH64_ASIMDDP] = {{AARCH64_HWCAP_ASIMDDP, 0}, "asimddp", &set_asimddp},
|
|
[AARCH64_SHA512] = {{AARCH64_HWCAP_SHA512, 0}, "sha512", &set_sha512},
|
|
[AARCH64_SVE] = {{AARCH64_HWCAP_SVE, 0}, "sve", &set_sve},
|
|
[AARCH64_ASIMDFHM] = {{AARCH64_HWCAP_ASIMDFHM, 0}, "asimdfhm", &set_asimdfhm},
|
|
[AARCH64_DIT] = {{AARCH64_HWCAP_DIT, 0}, "dit", &set_dit},
|
|
[AARCH64_USCAT] = {{AARCH64_HWCAP_USCAT, 0}, "uscat", &set_uscat},
|
|
[AARCH64_ILRCPC] = {{AARCH64_HWCAP_ILRCPC, 0}, "ilrcpc", &set_ilrcpc},
|
|
[AARCH64_FLAGM] = {{AARCH64_HWCAP_FLAGM, 0}, "flagm", &set_flagm},
|
|
[AARCH64_SSBS] = {{AARCH64_HWCAP_SSBS, 0}, "ssbs", &set_ssbs},
|
|
[AARCH64_SB] = {{AARCH64_HWCAP_SB, 0}, "sb", &set_sb},
|
|
[AARCH64_PACA] = {{AARCH64_HWCAP_PACA, 0}, "paca", &set_paca},
|
|
[AARCH64_PACG] = {{AARCH64_HWCAP_PACG, 0}, "pacg", &set_pacg},
|
|
};
|
|
|
|
static const size_t kConfigsSize = sizeof(kConfigs) / sizeof(CapabilityConfig);
|
|
|
|
static bool HandleAarch64Line(const LineResult result,
|
|
Aarch64Info* const info) {
|
|
StringView line = result.line;
|
|
StringView key, value;
|
|
if (CpuFeatures_StringView_GetAttributeKeyValue(line, &key, &value)) {
|
|
if (CpuFeatures_StringView_IsEquals(key, str("Features"))) {
|
|
CpuFeatures_SetFromFlags(kConfigsSize, kConfigs, value, &info->features);
|
|
} else if (CpuFeatures_StringView_IsEquals(key, str("CPU implementer"))) {
|
|
info->implementer = CpuFeatures_StringView_ParsePositiveNumber(value);
|
|
} else if (CpuFeatures_StringView_IsEquals(key, str("CPU variant"))) {
|
|
info->variant = CpuFeatures_StringView_ParsePositiveNumber(value);
|
|
} else if (CpuFeatures_StringView_IsEquals(key, str("CPU part"))) {
|
|
info->part = CpuFeatures_StringView_ParsePositiveNumber(value);
|
|
} else if (CpuFeatures_StringView_IsEquals(key, str("CPU revision"))) {
|
|
info->revision = CpuFeatures_StringView_ParsePositiveNumber(value);
|
|
}
|
|
}
|
|
return !result.eof;
|
|
}
|
|
|
|
static void FillProcCpuInfoData(Aarch64Info* const info) {
|
|
const int fd = CpuFeatures_OpenFile("/proc/cpuinfo");
|
|
if (fd >= 0) {
|
|
StackLineReader reader;
|
|
StackLineReader_Initialize(&reader, fd);
|
|
for (;;) {
|
|
if (!HandleAarch64Line(StackLineReader_NextLine(&reader), info)) {
|
|
break;
|
|
}
|
|
}
|
|
CpuFeatures_CloseFile(fd);
|
|
}
|
|
}
|
|
|
|
static const Aarch64Info kEmptyAarch64Info;
|
|
|
|
Aarch64Info GetAarch64Info(void) {
|
|
assert(kConfigsSize == AARCH64_LAST_);
|
|
|
|
// capabilities are fetched from both getauxval and /proc/cpuinfo so we can
|
|
// have some information if the executable is sandboxed (aka no access to
|
|
// /proc/cpuinfo).
|
|
Aarch64Info info = kEmptyAarch64Info;
|
|
|
|
FillProcCpuInfoData(&info);
|
|
CpuFeatures_OverrideFromHwCaps(kConfigsSize, kConfigs,
|
|
CpuFeatures_GetHardwareCapabilities(),
|
|
&info.features);
|
|
|
|
return info;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// Introspection functions
|
|
|
|
int GetAarch64FeaturesEnumValue(const Aarch64Features* features,
|
|
Aarch64FeaturesEnum value) {
|
|
switch (value) {
|
|
case AARCH64_FP:
|
|
return features->fp;
|
|
case AARCH64_ASIMD:
|
|
return features->asimd;
|
|
case AARCH64_EVTSTRM:
|
|
return features->evtstrm;
|
|
case AARCH64_AES:
|
|
return features->aes;
|
|
case AARCH64_PMULL:
|
|
return features->pmull;
|
|
case AARCH64_SHA1:
|
|
return features->sha1;
|
|
case AARCH64_SHA2:
|
|
return features->sha2;
|
|
case AARCH64_CRC32:
|
|
return features->crc32;
|
|
case AARCH64_ATOMICS:
|
|
return features->atomics;
|
|
case AARCH64_FPHP:
|
|
return features->fphp;
|
|
case AARCH64_ASIMDHP:
|
|
return features->asimdhp;
|
|
case AARCH64_CPUID:
|
|
return features->cpuid;
|
|
case AARCH64_ASIMDRDM:
|
|
return features->asimdrdm;
|
|
case AARCH64_JSCVT:
|
|
return features->jscvt;
|
|
case AARCH64_FCMA:
|
|
return features->fcma;
|
|
case AARCH64_LRCPC:
|
|
return features->lrcpc;
|
|
case AARCH64_DCPOP:
|
|
return features->dcpop;
|
|
case AARCH64_SHA3:
|
|
return features->sha3;
|
|
case AARCH64_SM3:
|
|
return features->sm3;
|
|
case AARCH64_SM4:
|
|
return features->sm4;
|
|
case AARCH64_ASIMDDP:
|
|
return features->asimddp;
|
|
case AARCH64_SHA512:
|
|
return features->sha512;
|
|
case AARCH64_SVE:
|
|
return features->sve;
|
|
case AARCH64_ASIMDFHM:
|
|
return features->asimdfhm;
|
|
case AARCH64_DIT:
|
|
return features->dit;
|
|
case AARCH64_USCAT:
|
|
return features->uscat;
|
|
case AARCH64_ILRCPC:
|
|
return features->ilrcpc;
|
|
case AARCH64_FLAGM:
|
|
return features->flagm;
|
|
case AARCH64_SSBS:
|
|
return features->ssbs;
|
|
case AARCH64_SB:
|
|
return features->sb;
|
|
case AARCH64_PACA:
|
|
return features->paca;
|
|
case AARCH64_PACG:
|
|
return features->pacg;
|
|
case AARCH64_LAST_:
|
|
break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
const char* GetAarch64FeaturesEnumName(Aarch64FeaturesEnum value) {
|
|
if(value >= kConfigsSize)
|
|
return "unknown feature";
|
|
return kConfigs[value].proc_cpuinfo_flag;
|
|
}
|