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//===-- RegisterContextPOSIXCore_riscv64.cpp ------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "RegisterContextPOSIXCore_riscv64.h"
#include "lldb/Utility/DataBufferHeap.h"
using namespace lldb_private;
std::unique_ptr<RegisterContextCorePOSIX_riscv64>
RegisterContextCorePOSIX_riscv64::Create(Thread &thread, const ArchSpec &arch,
const DataExtractor &gpregset,
llvm::ArrayRef<CoreNote> notes) {
Flags opt_regsets = RegisterInfoPOSIX_riscv64::eRegsetMaskDefault;
DataExtractor fpregset = getRegset(notes, arch.GetTriple(), FPR_Desc);
if (fpregset.GetByteSize() >= sizeof(uint64_t)) {
opt_regsets.Set(RegisterInfoPOSIX_riscv64::eRegsetMaskFP);
}
return std::unique_ptr<RegisterContextCorePOSIX_riscv64>(
new RegisterContextCorePOSIX_riscv64(
thread,
std::make_unique<RegisterInfoPOSIX_riscv64>(arch, opt_regsets),
gpregset, notes));
}
RegisterContextCorePOSIX_riscv64::RegisterContextCorePOSIX_riscv64(
Thread &thread, std::unique_ptr<RegisterInfoPOSIX_riscv64> register_info,
const DataExtractor &gpregset, llvm::ArrayRef<CoreNote> notes)
: RegisterContextPOSIX_riscv64(thread, std::move(register_info)) {
m_gpr.SetData(std::make_shared<DataBufferHeap>(gpregset.GetDataStart(),
gpregset.GetByteSize()));
m_gpr.SetByteOrder(gpregset.GetByteOrder());
if (m_register_info_up->IsFPPresent()) {
ArchSpec arch = m_register_info_up->GetTargetArchitecture();
m_fpr = getRegset(notes, arch.GetTriple(), FPR_Desc);
}
}
RegisterContextCorePOSIX_riscv64::~RegisterContextCorePOSIX_riscv64() = default;
bool RegisterContextCorePOSIX_riscv64::ReadGPR() { return true; }
bool RegisterContextCorePOSIX_riscv64::ReadFPR() { return true; }
bool RegisterContextCorePOSIX_riscv64::WriteGPR() {
assert(false && "Writing registers is not allowed for core dumps");
return false;
}
bool RegisterContextCorePOSIX_riscv64::WriteFPR() {
assert(false && "Writing registers is not allowed for core dumps");
return false;
}
bool RegisterContextCorePOSIX_riscv64::ReadRegister(
const RegisterInfo *reg_info, RegisterValue &value) {
const uint8_t *src = nullptr;
lldb::offset_t offset = reg_info->byte_offset;
if (IsGPR(reg_info->kinds[lldb::eRegisterKindLLDB])) {
src = m_gpr.GetDataStart();
} else if (IsFPR(reg_info->kinds[lldb::eRegisterKindLLDB])) {
src = m_fpr.GetDataStart();
offset -= GetGPRSize();
} else {
return false;
}
Status error;
value.SetFromMemoryData(*reg_info, src + offset, reg_info->byte_size,
lldb::eByteOrderLittle, error);
return error.Success();
}
bool RegisterContextCorePOSIX_riscv64::WriteRegister(
const RegisterInfo *reg_info, const RegisterValue &value) {
return false;
}
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