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https://github.com/google/cpu_features.git
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0d5f398c58
* Add macros for LOONGARCH hwcaps * Update hwcaps.h * LoongArch Support * Remove unused definitions. * Add ignored feature in test.
90 lines
3.4 KiB
C
90 lines
3.4 KiB
C
// Copyright 2023 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "cpu_features_macros.h"
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#ifdef CPU_FEATURES_ARCH_LOONGARCH
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#if defined(CPU_FEATURES_OS_LINUX)
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#include "cpuinfo_loongarch.h"
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////////////////////////////////////////////////////////////////////////////////
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// Definitions for introspection.
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////////////////////////////////////////////////////////////////////////////////
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#define INTROSPECTION_TABLE \
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LINE(LOONGARCH_CPUCFG, CPUCFG, "cfg", HWCAP_LOONGARCH_CPUCFG, 0) \
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LINE(LOONGARCH_LAM, LAM, "lam", HWCAP_LOONGARCH_LAM, 0) \
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LINE(LOONGARCH_UAL, UAL, "ual", HWCAP_LOONGARCH_UAL, 0) \
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LINE(LOONGARCH_FPU, FPU, "fpu", HWCAP_LOONGARCH_FPU, 0) \
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LINE(LOONGARCH_LSX, LSX, "lsx", HWCAP_LOONGARCH_LSX, 0) \
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LINE(LOONGARCH_LASX, LASX, "lasx", HWCAP_LOONGARCH_LASX, 0) \
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LINE(LOONGARCH_CRC32, CRC32, "crc32", HWCAP_LOONGARCH_CRC32, 0) \
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LINE(LOONGARCH_COMPLEX, COMPLEX, "complex", HWCAP_LOONGARCH_COMPLEX, 0) \
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LINE(LOONGARCH_CRYPTO, CRYPTO, "crypto", HWCAP_LOONGARCH_CRYPTO, 0) \
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LINE(LOONGARCH_LVZ, LVZ, "lvz", HWCAP_LOONGARCH_LVZ, 0) \
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LINE(LOONGARCH_LBT_X86, LBT_X86, "lbt_x86", HWCAP_LOONGARCH_LBT_X86, 0) \
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LINE(LOONGARCH_LBT_ARM, LBT_ARM, "lbt_arm", HWCAP_LOONGARCH_LBT_ARM, 0) \
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LINE(LOONGARCH_LBT_MIPS, LBT_MIPS, "lbt_mips", HWCAP_LOONGARCH_LBT_MIPS, 0) \
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LINE(LOONGARCH_PTW, PTW, "ptw", HWCAP_LOONGARCH_PTW, 0)
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#define INTROSPECTION_PREFIX LoongArch
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#define INTROSPECTION_ENUM_PREFIX LOONGARCH
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#include "define_introspection_and_hwcaps.inl"
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////////////////////////////////////////////////////////////////////////////////
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// Implementation.
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////////////////////////////////////////////////////////////////////////////////
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#include <stdbool.h>
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#include <stdio.h>
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#include "internal/filesystem.h"
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#include "internal/stack_line_reader.h"
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static const LoongArchInfo kEmptyLoongArchInfo;
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static bool HandleLoongArchLine(const LineResult result, LoongArchInfo* const info) {
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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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if (CpuFeatures_StringView_IsEquals(key, str("Features"))) {
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for (size_t i = 0; i < LOONGARCH_LAST_; ++i) {
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kSetters[i](&info->features, CpuFeatures_StringView_HasWord(
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value, kCpuInfoFlags[i], ' '));
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}
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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(LoongArchInfo* const info) {
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const int fd = CpuFeatures_OpenFile("/proc/cpuinfo");
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if (fd >= 0) {
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StackLineReader reader;
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StackLineReader_Initialize(&reader, fd);
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for (;;) {
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if (!HandleLoongArchLine(StackLineReader_NextLine(&reader), info)) break;
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}
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CpuFeatures_CloseFile(fd);
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}
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}
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LoongArchInfo GetLoongArchInfo(void) {
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LoongArchInfo info = kEmptyLoongArchInfo;
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FillProcCpuInfoData(&info);
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return info;
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}
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#endif // defined(CPU_FEATURES_OS_LINUX)
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#endif // CPU_FEATURES_ARCH_LOONGARCH
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