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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"
namespace art {
const char* GetInstructionSetString(const InstructionSet isa) {
switch (isa) {
case kArm:
case kThumb2:
return "arm";
case kArm64:
return "arm64";
case kX86:
return "x86";
case kX86_64:
return "x86_64";
case kMips:
return "mips";
case kNone:
return "none";
default:
LOG(FATAL) << "Unknown ISA " << isa;
return nullptr;
}
}
InstructionSet GetInstructionSetFromString(const char* isa_str) {
CHECK(isa_str != nullptr);
if (strcmp("arm", isa_str) == 0) {
return kArm;
} else if (strcmp("arm64", isa_str) == 0) {
return kArm64;
} else if (strcmp("x86", isa_str) == 0) {
return kX86;
} else if (strcmp("x86_64", isa_str) == 0) {
return kX86_64;
} else if (strcmp("mips", isa_str) == 0) {
return kMips;
}
return kNone;
}
size_t GetInstructionSetAlignment(InstructionSet isa) {
switch (isa) {
case kArm:
// Fall-through.
case kThumb2:
return kArmAlignment;
case kArm64:
return kArm64Alignment;
case kX86:
// Fall-through.
case kX86_64:
return kX86Alignment;
case kMips:
return kMipsAlignment;
case kNone:
LOG(FATAL) << "ISA kNone does not have alignment.";
return 0;
default:
LOG(FATAL) << "Unknown ISA " << isa;
return 0;
}
}
static constexpr size_t kDefaultStackOverflowReservedBytes = 16 * KB;
static constexpr size_t kMipsStackOverflowReservedBytes = kDefaultStackOverflowReservedBytes;
static constexpr size_t kArmStackOverflowReservedBytes = 8 * KB;
static constexpr size_t kArm64StackOverflowReservedBytes = 8 * KB;
static constexpr size_t kX86StackOverflowReservedBytes = 8 * KB;
static constexpr size_t kX86_64StackOverflowReservedBytes = 8 * KB;
size_t GetStackOverflowReservedBytes(InstructionSet isa) {
switch (isa) {
case kArm: // Intentional fall-through.
case kThumb2:
return kArmStackOverflowReservedBytes;
case kArm64:
return kArm64StackOverflowReservedBytes;
case kMips:
return kMipsStackOverflowReservedBytes;
case kX86:
return kX86StackOverflowReservedBytes;
case kX86_64:
return kX86_64StackOverflowReservedBytes;
case kNone:
LOG(FATAL) << "kNone has no stack overflow size";
return 0;
default:
LOG(FATAL) << "Unknown instruction set" << isa;
return 0;
}
}
std::string InstructionSetFeatures::GetFeatureString() const {
std::string result;
if ((mask_ & kHwDiv) != 0) {
result += "div";
}
if (result.size() == 0) {
result = "none";
}
return result;
}
} // namespace art
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