1 //===-- RegisterContextPOSIXCore_x86_64.cpp ---------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "RegisterContextPOSIXCore_x86_64.h"
11 #include "lldb/Core/RegisterValue.h"
12 #include "lldb/Target/Thread.h"
13 #include "lldb/Utility/DataExtractor.h"
15 using namespace lldb_private;
17 RegisterContextCorePOSIX_x86_64::RegisterContextCorePOSIX_x86_64(
18 Thread &thread, RegisterInfoInterface *register_info,
19 const DataExtractor &gpregset, llvm::ArrayRef<CoreNote> notes)
20 : RegisterContextPOSIX_x86(thread, 0, register_info) {
24 m_gpregset.reset(new uint8_t[size]);
26 gpregset.ExtractBytes(0, size, lldb::eByteOrderLittle, m_gpregset.get());
30 DataExtractor fpregset = getRegset(
31 notes, register_info->GetTargetArchitecture().GetTriple(), FPR_Desc);
32 size = sizeof(FXSAVE);
33 m_fpregset.reset(new uint8_t[size]);
35 fpregset.ExtractBytes(0, size, lldb::eByteOrderLittle, m_fpregset.get());
40 bool RegisterContextCorePOSIX_x86_64::ReadGPR() {
41 return m_gpregset != nullptr;
44 bool RegisterContextCorePOSIX_x86_64::ReadFPR() {
45 return m_fpregset != nullptr;
48 bool RegisterContextCorePOSIX_x86_64::WriteGPR() {
53 bool RegisterContextCorePOSIX_x86_64::WriteFPR() {
58 bool RegisterContextCorePOSIX_x86_64::ReadRegister(const RegisterInfo *reg_info,
59 RegisterValue &value) {
62 const size_t fxsave_offset = reg_info->byte_offset - GetFXSAVEOffset();
63 // make the offset relative to the beginning of the FXSAVE structure because
64 // this is the data that we have (not the entire UserArea)
66 if (m_gpregset && reg_info->byte_offset < GetGPRSize()) {
67 src = m_gpregset.get();
68 offset = reg_info->byte_offset;
69 } else if (m_fpregset && fxsave_offset < sizeof(FXSAVE)) {
70 src = m_fpregset.get();
71 offset = fxsave_offset;
77 value.SetFromMemoryData(reg_info, src + offset, reg_info->byte_size,
78 lldb::eByteOrderLittle, error);
80 return error.Success();
83 bool RegisterContextCorePOSIX_x86_64::ReadAllRegisterValues(
84 lldb::DataBufferSP &data_sp) {
88 bool RegisterContextCorePOSIX_x86_64::WriteRegister(
89 const RegisterInfo *reg_info, const RegisterValue &value) {
93 bool RegisterContextCorePOSIX_x86_64::WriteAllRegisterValues(
94 const lldb::DataBufferSP &data_sp) {
98 bool RegisterContextCorePOSIX_x86_64::HardwareSingleStep(bool enable) {