mirror of https://github.com/gnss-sdr/gnss-sdr
168 lines
7.3 KiB
C
168 lines
7.3 KiB
C
// SPDX-FileCopyrightText: 2017 Google Inc.
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// SPDX-License-Identifier: Apache-2.0
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#include "cpuinfo_aarch64.h"
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#include "internal/filesystem.h"
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#include "internal/hwcaps.h"
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#include "internal/stack_line_reader.h"
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#include "internal/string_view.h"
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#include "internal/unix_features_aggregator.h"
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#include <assert.h>
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#include <ctype.h>
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DECLARE_SETTER_AND_GETTER(Aarch64Features, fp)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, asimd)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, evtstrm)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, aes)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, pmull)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, sha1)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, sha2)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, crc32)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, atomics)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, fphp)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, asimdhp)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, cpuid)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, asimdrdm)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, jscvt)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, fcma)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, lrcpc)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, dcpop)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, sha3)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, sm3)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, sm4)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, asimddp)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, sha512)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, sve)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, asimdfhm)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, dit)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, uscat)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, ilrcpc)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, flagm)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, ssbs)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, sb)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, paca)
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DECLARE_SETTER_AND_GETTER(Aarch64Features, pacg)
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static const CapabilityConfig kConfigs[] = {
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[AARCH64_FP] = {{AARCH64_HWCAP_FP, 0}, "fp", &set_fp, &get_fp},
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[AARCH64_ASIMD] = {{AARCH64_HWCAP_ASIMD, 0}, "asimd", &set_asimd, &get_asimd},
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[AARCH64_EVTSTRM] = {{AARCH64_HWCAP_EVTSTRM, 0}, "evtstrm", &set_evtstrm, &get_evtstrm},
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[AARCH64_AES] = {{AARCH64_HWCAP_AES, 0}, "aes", &set_aes, &get_aes},
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[AARCH64_PMULL] = {{AARCH64_HWCAP_PMULL, 0}, "pmull", &set_pmull, &get_pmull},
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[AARCH64_SHA1] = {{AARCH64_HWCAP_SHA1, 0}, "sha1", &set_sha1, &get_sha1},
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[AARCH64_SHA2] = {{AARCH64_HWCAP_SHA2, 0}, "sha2", &set_sha2, &get_sha2},
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[AARCH64_CRC32] = {{AARCH64_HWCAP_CRC32, 0}, "crc32", &set_crc32, &get_crc32},
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[AARCH64_ATOMICS] = {{AARCH64_HWCAP_ATOMICS, 0}, "atomics", &set_atomics, &get_atomics},
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[AARCH64_FPHP] = {{AARCH64_HWCAP_FPHP, 0}, "fphp", &set_fphp, &get_fphp},
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[AARCH64_ASIMDHP] = {{AARCH64_HWCAP_ASIMDHP, 0}, "asimdhp", &set_asimdhp, &get_asimdhp},
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[AARCH64_CPUID] = {{AARCH64_HWCAP_CPUID, 0}, "cpuid", &set_cpuid, &get_cpuid},
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[AARCH64_ASIMDRDM] = {{AARCH64_HWCAP_ASIMDRDM, 0}, "asimdrdm", &set_asimdrdm, &get_asimdrdm},
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[AARCH64_JSCVT] = {{AARCH64_HWCAP_JSCVT, 0}, "jscvt", &set_jscvt, &get_jscvt},
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[AARCH64_FCMA] = {{AARCH64_HWCAP_FCMA, 0}, "fcma", &set_fcma, &get_fcma},
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[AARCH64_LRCPC] = {{AARCH64_HWCAP_LRCPC, 0}, "lrcpc", &set_lrcpc, &get_lrcpc},
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[AARCH64_DCPOP] = {{AARCH64_HWCAP_DCPOP, 0}, "dcpop", &set_dcpop, &get_dcpop},
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[AARCH64_SHA3] = {{AARCH64_HWCAP_SHA3, 0}, "sha3", &set_sha3, &get_sha3},
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[AARCH64_SM3] = {{AARCH64_HWCAP_SM3, 0}, "sm3", &set_sm3, &get_sm3},
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[AARCH64_SM4] = {{AARCH64_HWCAP_SM4, 0}, "sm4", &set_sm4, &get_sm4},
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[AARCH64_ASIMDDP] = {{AARCH64_HWCAP_ASIMDDP, 0}, "asimddp", &set_asimddp, &get_asimddp},
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[AARCH64_SHA512] = {{AARCH64_HWCAP_SHA512, 0}, "sha512", &set_sha512, &get_sha512},
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[AARCH64_SVE] = {{AARCH64_HWCAP_SVE, 0}, "sve", &set_sve, &get_sve},
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[AARCH64_ASIMDFHM] = {{AARCH64_HWCAP_ASIMDFHM, 0}, "asimdfhm", &set_asimdfhm, &get_asimdfhm},
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[AARCH64_DIT] = {{AARCH64_HWCAP_DIT, 0}, "dit", &set_dit, &get_dit},
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[AARCH64_USCAT] = {{AARCH64_HWCAP_USCAT, 0}, "uscat", &set_uscat, &get_uscat},
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[AARCH64_ILRCPC] = {{AARCH64_HWCAP_ILRCPC, 0}, "ilrcpc", &set_ilrcpc, &get_ilrcpc},
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[AARCH64_FLAGM] = {{AARCH64_HWCAP_FLAGM, 0}, "flagm", &set_flagm, &get_flagm},
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[AARCH64_SSBS] = {{AARCH64_HWCAP_SSBS, 0}, "ssbs", &set_ssbs, &get_ssbs},
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[AARCH64_SB] = {{AARCH64_HWCAP_SB, 0}, "sb", &set_sb, &get_sb},
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[AARCH64_PACA] = {{AARCH64_HWCAP_PACA, 0}, "paca", &set_paca, &get_paca},
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[AARCH64_PACG] = {{AARCH64_HWCAP_PACG, 0}, "pacg", &set_pacg, &get_pacg},
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};
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static const size_t kConfigsSize = sizeof(kConfigs) / sizeof(CapabilityConfig);
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static bool HandleAarch64Line(const LineResult result,
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Aarch64Info* const info)
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{
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StringView line = result.line;
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StringView key, value;
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if (CpuFeatures_StringView_GetAttributeKeyValue(line, &key, &value))
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{
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if (CpuFeatures_StringView_IsEquals(key, str("Features")))
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{
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CpuFeatures_SetFromFlags(kConfigsSize, kConfigs, value, &info->features);
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}
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else if (CpuFeatures_StringView_IsEquals(key, str("CPU implementer")))
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{
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info->implementer = CpuFeatures_StringView_ParsePositiveNumber(value);
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}
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else if (CpuFeatures_StringView_IsEquals(key, str("CPU variant")))
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{
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info->variant = CpuFeatures_StringView_ParsePositiveNumber(value);
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}
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else if (CpuFeatures_StringView_IsEquals(key, str("CPU part")))
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{
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info->part = CpuFeatures_StringView_ParsePositiveNumber(value);
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}
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else if (CpuFeatures_StringView_IsEquals(key, str("CPU revision")))
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{
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info->revision = CpuFeatures_StringView_ParsePositiveNumber(value);
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}
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}
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return !result.eof;
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}
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static void FillProcCpuInfoData(Aarch64Info* const info)
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{
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const int fd = CpuFeatures_OpenFile("/proc/cpuinfo");
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if (fd >= 0)
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{
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StackLineReader reader;
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StackLineReader_Initialize(&reader, fd);
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for (;;)
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{
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if (!HandleAarch64Line(StackLineReader_NextLine(&reader), info))
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{
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break;
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}
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}
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CpuFeatures_CloseFile(fd);
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}
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}
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static const Aarch64Info kEmptyAarch64Info;
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Aarch64Info GetAarch64Info(void)
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{
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assert(kConfigsSize == AARCH64_LAST_);
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// capabilities are fetched from both getauxval and /proc/cpuinfo so we can
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// have some information if the executable is sandboxed (aka no access to
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// /proc/cpuinfo).
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Aarch64Info info = kEmptyAarch64Info;
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FillProcCpuInfoData(&info);
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CpuFeatures_OverrideFromHwCaps(kConfigsSize, kConfigs,
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CpuFeatures_GetHardwareCapabilities(),
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&info.features);
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return info;
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}
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////////////////////////////////////////////////////////////////////////////////
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// Introspection functions
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int GetAarch64FeaturesEnumValue(const Aarch64Features* features,
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Aarch64FeaturesEnum value)
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{
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if (value >= kConfigsSize)
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return false;
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return kConfigs[value].get_bit((Aarch64Features*)features);
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}
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const char* GetAarch64FeaturesEnumName(Aarch64FeaturesEnum value)
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{
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if (value >= kConfigsSize)
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return "unknown feature";
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return kConfigs[value].proc_cpuinfo_flag;
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}
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