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/*
* Copyright (C) 2011 The Android Open Source Project
*
* 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 "instruction_set.h"
#include "android-base/logging.h"
#include "android-base/properties.h"
#include "android-base/stringprintf.h"
#include "base/bit_utils.h"
#include "base/globals.h"
#include <cstring>
namespace art {
void InstructionSetAbort(InstructionSet isa) {
switch (isa) {
case InstructionSet::kArm:
case InstructionSet::kThumb2:
case InstructionSet::kArm64:
case InstructionSet::kRiscv64:
case InstructionSet::kX86:
case InstructionSet::kX86_64:
case InstructionSet::kNone:
LOG(FATAL) << "Unsupported instruction set " << isa;
UNREACHABLE();
}
LOG(FATAL) << "Unknown ISA " << isa;
UNREACHABLE();
}
const char* GetInstructionSetString(InstructionSet isa) {
switch (isa) {
case InstructionSet::kArm:
case InstructionSet::kThumb2:
return "arm";
case InstructionSet::kArm64:
return "arm64";
case InstructionSet::kRiscv64:
return "riscv64";
case InstructionSet::kX86:
return "x86";
case InstructionSet::kX86_64:
return "x86_64";
case InstructionSet::kNone:
return "none";
}
LOG(FATAL) << "Unknown ISA " << isa;
UNREACHABLE();
}
InstructionSet GetInstructionSetFromString(const char* isa_str) {
CHECK(isa_str != nullptr);
if (strcmp("arm", isa_str) == 0) {
return InstructionSet::kArm;
} else if (strcmp("arm64", isa_str) == 0) {
return InstructionSet::kArm64;
} else if (strcmp("riscv64", isa_str) == 0) {
return InstructionSet::kRiscv64;
} else if (strcmp("x86", isa_str) == 0) {
return InstructionSet::kX86;
} else if (strcmp("x86_64", isa_str) == 0) {
return InstructionSet::kX86_64;
}
return InstructionSet::kNone;
}
std::vector<InstructionSet> GetSupportedInstructionSets(std::string* error_msg) {
std::string zygote_kinds = android::base::GetProperty("ro.zygote", {});
if (zygote_kinds.empty()) {
*error_msg = "Unable to get Zygote kinds";
return {};
}
switch (kRuntimeISA) {
case InstructionSet::kArm:
case InstructionSet::kArm64:
if (zygote_kinds == "zygote64_32" || zygote_kinds == "zygote32_64") {
return {InstructionSet::kArm64, InstructionSet::kArm};
} else if (zygote_kinds == "zygote64") {
return {InstructionSet::kArm64};
} else if (zygote_kinds == "zygote32") {
return {InstructionSet::kArm};
} else {
*error_msg = android::base::StringPrintf("Unknown Zygote kinds '%s'", zygote_kinds.c_str());
return {};
}
case InstructionSet::kRiscv64:
return {InstructionSet::kRiscv64};
case InstructionSet::kX86:
case InstructionSet::kX86_64:
if (zygote_kinds == "zygote64_32" || zygote_kinds == "zygote32_64") {
return {InstructionSet::kX86_64, InstructionSet::kX86};
} else if (zygote_kinds == "zygote64") {
return {InstructionSet::kX86_64};
} else if (zygote_kinds == "zygote32") {
return {InstructionSet::kX86};
} else {
*error_msg = android::base::StringPrintf("Unknown Zygote kinds '%s'", zygote_kinds.c_str());
return {};
}
default:
*error_msg = android::base::StringPrintf("Unknown runtime ISA '%s'",
GetInstructionSetString(kRuntimeISA));
return {};
}
}
namespace instruction_set_details {
static_assert(IsAligned<kPageSize>(kArmStackOverflowReservedBytes), "ARM gap not page aligned");
static_assert(IsAligned<kPageSize>(kArm64StackOverflowReservedBytes), "ARM64 gap not page aligned");
static_assert(IsAligned<kPageSize>(kRiscv64StackOverflowReservedBytes),
"RISCV64 gap not page aligned");
static_assert(IsAligned<kPageSize>(kX86StackOverflowReservedBytes), "X86 gap not page aligned");
static_assert(IsAligned<kPageSize>(kX86_64StackOverflowReservedBytes),
"X86_64 gap not page aligned");
#if !defined(ART_FRAME_SIZE_LIMIT)
#error "ART frame size limit missing"
#endif
// TODO: Should we require an extra page (RoundUp(SIZE) + kPageSize)?
static_assert(ART_FRAME_SIZE_LIMIT < kArmStackOverflowReservedBytes, "Frame size limit too large");
static_assert(ART_FRAME_SIZE_LIMIT < kArm64StackOverflowReservedBytes,
"Frame size limit too large");
static_assert(ART_FRAME_SIZE_LIMIT < kRiscv64StackOverflowReservedBytes,
"Frame size limit too large");
static_assert(ART_FRAME_SIZE_LIMIT < kX86StackOverflowReservedBytes,
"Frame size limit too large");
static_assert(ART_FRAME_SIZE_LIMIT < kX86_64StackOverflowReservedBytes,
"Frame size limit too large");
NO_RETURN void GetStackOverflowReservedBytesFailure(const char* error_msg) {
LOG(FATAL) << error_msg;
UNREACHABLE();
}
} // namespace instruction_set_details
} // namespace art
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