1 //===-- RegisterContextPOSIXCore_x86_64.cpp ---------------------*- C++ -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 #include "RegisterContextPOSIXCore_x86_64.h"
10 #include "lldb/Target/Thread.h"
11 #include "lldb/Utility/DataExtractor.h"
12 #include "lldb/Utility/RegisterValue.h"
14 using namespace lldb_private;
16 RegisterContextCorePOSIX_x86_64::RegisterContextCorePOSIX_x86_64(
17 Thread &thread, RegisterInfoInterface *register_info,
18 const DataExtractor &gpregset, llvm::ArrayRef<CoreNote> notes)
19 : RegisterContextPOSIX_x86(thread, 0, register_info) {
23 m_gpregset.reset(new uint8_t[size]);
25 gpregset.ExtractBytes(0, size, lldb::eByteOrderLittle, m_gpregset.get());
29 DataExtractor fpregset = getRegset(
30 notes, register_info->GetTargetArchitecture().GetTriple(), FPR_Desc);
31 size = sizeof(FXSAVE);
32 m_fpregset.reset(new uint8_t[size]);
34 fpregset.ExtractBytes(0, size, lldb::eByteOrderLittle, m_fpregset.get());
39 bool RegisterContextCorePOSIX_x86_64::ReadGPR() {
40 return m_gpregset != nullptr;
43 bool RegisterContextCorePOSIX_x86_64::ReadFPR() {
44 return m_fpregset != nullptr;
47 bool RegisterContextCorePOSIX_x86_64::WriteGPR() {
52 bool RegisterContextCorePOSIX_x86_64::WriteFPR() {
57 bool RegisterContextCorePOSIX_x86_64::ReadRegister(const RegisterInfo *reg_info,
58 RegisterValue &value) {
61 const size_t fxsave_offset = reg_info->byte_offset - GetFXSAVEOffset();
62 // make the offset relative to the beginning of the FXSAVE structure because
63 // this is the data that we have (not the entire UserArea)
65 if (m_gpregset && reg_info->byte_offset < GetGPRSize()) {
66 src = m_gpregset.get();
67 offset = reg_info->byte_offset;
68 } else if (m_fpregset && fxsave_offset < sizeof(FXSAVE)) {
69 src = m_fpregset.get();
70 offset = fxsave_offset;
76 value.SetFromMemoryData(reg_info, src + offset, reg_info->byte_size,
77 lldb::eByteOrderLittle, error);
79 return error.Success();
82 bool RegisterContextCorePOSIX_x86_64::ReadAllRegisterValues(
83 lldb::DataBufferSP &data_sp) {
87 bool RegisterContextCorePOSIX_x86_64::WriteRegister(
88 const RegisterInfo *reg_info, const RegisterValue &value) {
92 bool RegisterContextCorePOSIX_x86_64::WriteAllRegisterValues(
93 const lldb::DataBufferSP &data_sp) {
97 bool RegisterContextCorePOSIX_x86_64::HardwareSingleStep(bool enable) {