Sha256: 12a31447a7e47d17f6696eb8ac363d630a23c3ff50676b63484a639dd64ce49a
Contents?: true
Size: 1.59 KB
Versions: 4
Compression:
Stored size: 1.59 KB
Contents
// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/eh-frame.h"
namespace v8 {
namespace internal {
static const int kX0DwarfCode = 0;
static const int kJsSpDwarfCode = 28;
static const int kFpDwarfCode = 29;
static const int kLrDwarfCode = 30;
static const int kCSpDwarfCode = 31;
const int EhFrameConstants::kCodeAlignmentFactor = 4;
const int EhFrameConstants::kDataAlignmentFactor = -8;
void EhFrameWriter::WriteReturnAddressRegisterCode() {
WriteULeb128(kLrDwarfCode);
}
void EhFrameWriter::WriteInitialStateInCie() {
SetBaseAddressRegisterAndOffset(x29, 0);
RecordRegisterNotModified(x30);
}
// static
int EhFrameWriter::RegisterToDwarfCode(Register name) {
switch (name.code()) {
case Register::kCode_x28:
return kJsSpDwarfCode;
case Register::kCode_x29:
return kFpDwarfCode;
case Register::kCode_x30:
return kLrDwarfCode;
case Register::kCode_x31:
return kCSpDwarfCode;
case Register::kCode_x0:
return kX0DwarfCode;
default:
UNIMPLEMENTED();
return -1;
}
}
#ifdef ENABLE_DISASSEMBLER
// static
const char* EhFrameDisassembler::DwarfRegisterCodeToString(int code) {
switch (code) {
case kFpDwarfCode:
return "fp";
case kLrDwarfCode:
return "lr";
case kJsSpDwarfCode:
return "jssp";
case kCSpDwarfCode:
return "csp"; // This could be zr as well
default:
UNIMPLEMENTED();
return nullptr;
}
}
#endif
} // namespace internal
} // namespace v8
Version data entries
4 entries across 4 versions & 1 rubygems