1 // Copyright 2016 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "src/codegen/ppc/constants-ppc.h" 6 #include "src/diagnostics/eh-frame.h" 7 8 namespace v8 { 9 namespace internal { 10 11 const int EhFrameConstants::kCodeAlignmentFactor = 4; 12 // all PPC are 4 bytes instruction 13 const int EhFrameConstants::kDataAlignmentFactor = -8; // 64-bit always -8 14 WriteReturnAddressRegisterCode()15void EhFrameWriter::WriteReturnAddressRegisterCode() { 16 WriteULeb128(kLrDwarfCode); 17 } 18 WriteInitialStateInCie()19void EhFrameWriter::WriteInitialStateInCie() { 20 SetBaseAddressRegisterAndOffset(fp, 0); 21 RecordRegisterNotModified(kLrDwarfCode); 22 } 23 24 // static RegisterToDwarfCode(Register name)25int EhFrameWriter::RegisterToDwarfCode(Register name) { 26 switch (name.code()) { 27 case kRegCode_fp: 28 return kFpDwarfCode; 29 case kRegCode_sp: 30 return kSpDwarfCode; 31 case kRegCode_r0: 32 return kR0DwarfCode; 33 default: 34 UNIMPLEMENTED(); 35 return -1; 36 } 37 } 38 39 #ifdef ENABLE_DISASSEMBLER 40 41 // static DwarfRegisterCodeToString(int code)42const char* EhFrameDisassembler::DwarfRegisterCodeToString(int code) { 43 switch (code) { 44 case kFpDwarfCode: 45 return "fp"; 46 case kSpDwarfCode: 47 return "sp"; 48 default: 49 UNIMPLEMENTED(); 50 return nullptr; 51 } 52 } 53 54 #endif 55 56 } // namespace internal 57 } // namespace v8 58