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// 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 "cpu_features_macros.h"
#ifdef CPU_FEATURES_ARCH_MIPS
#if defined(CPU_FEATURES_OS_LINUX) || defined(CPU_FEATURES_OS_ANDROID)
#include "cpuinfo_mips.h"
////////////////////////////////////////////////////////////////////////////////
// Definitions for introspection.
////////////////////////////////////////////////////////////////////////////////
#define INTROSPECTION_TABLE \
LINE(MIPS_MSA, msa, "msa", MIPS_HWCAP_MSA, 0) \
LINE(MIPS_EVA, eva, "eva", 0, 0) \
LINE(MIPS_R6, r6, "r6", MIPS_HWCAP_R6, 0) \
LINE(MIPS_MIPS16, mips16, "mips16", MIPS_HWCAP_MIPS16, 0) \
LINE(MIPS_MDMX, mdmx, "mdmx", MIPS_HWCAP_MDMX, 0) \
LINE(MIPS_MIPS3D, mips3d, "mips3d", MIPS_HWCAP_MIPS3D, 0) \
LINE(MIPS_SMART, smart, "smartmips", MIPS_HWCAP_SMARTMIPS, 0) \
LINE(MIPS_DSP, dsp, "dsp", MIPS_HWCAP_DSP, 0)
#define INTROSPECTION_PREFIX Mips
#define INTROSPECTION_ENUM_PREFIX MIPS
#include "define_introspection_and_hwcaps.inl"
////////////////////////////////////////////////////////////////////////////////
// Implementation.
////////////////////////////////////////////////////////////////////////////////
#include "internal/filesystem.h"
#include "internal/hwcaps.h"
#include "internal/stack_line_reader.h"
#include "internal/string_view.h"
static bool HandleMipsLine(const LineResult result,
MipsFeatures* const features) {
StringView key, value;
// See tests for an example.
if (CpuFeatures_StringView_GetAttributeKeyValue(result.line, &key, &value)) {
if (CpuFeatures_StringView_IsEquals(key, str("ASEs implemented"))) {
for (size_t i = 0; i < MIPS_LAST_; ++i) {
kSetters[i](features, CpuFeatures_StringView_HasWord(
value, kCpuInfoFlags[i], ' '));
}
}
}
return !result.eof;
}
static void FillProcCpuInfoData(MipsFeatures* const features) {
const int fd = CpuFeatures_OpenFile("/proc/cpuinfo");
if (fd >= 0) {
StackLineReader reader;
StackLineReader_Initialize(&reader, fd);
for (;;) {
if (!HandleMipsLine(StackLineReader_NextLine(&reader), features)) {
break;
}
}
CpuFeatures_CloseFile(fd);
}
}
static const MipsInfo kEmptyMipsInfo;
MipsInfo GetMipsInfo(void) {
// 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).
MipsInfo info = kEmptyMipsInfo;
FillProcCpuInfoData(&info.features);
const HardwareCapabilities hwcaps = CpuFeatures_GetHardwareCapabilities();
for (size_t i = 0; i < MIPS_LAST_; ++i) {
if (CpuFeatures_IsHwCapsSet(kHardwareCapabilities[i], hwcaps)) {
kSetters[i](&info.features, true);
}
}
return info;
}
#endif // defined(CPU_FEATURES_OS_LINUX) || defined(CPU_FEATURES_OS_ANDROID)
#endif // CPU_FEATURES_ARCH_MIPS
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