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//===-- RegisterContextPOSIXCore_loongarch64.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_loongarch64.h"
#include "lldb/Utility/DataBufferHeap.h"
using namespace lldb_private;
std::unique_ptr<RegisterContextCorePOSIX_loongarch64>
RegisterContextCorePOSIX_loongarch64::Create(Thread &thread,
const ArchSpec &arch,
const DataExtractor &gpregset,
llvm::ArrayRef<CoreNote> notes) {
return std::unique_ptr<RegisterContextCorePOSIX_loongarch64>(
new RegisterContextCorePOSIX_loongarch64(
thread,
std::make_unique<RegisterInfoPOSIX_loongarch64>(arch, Flags()),
gpregset, notes));
}
RegisterContextCorePOSIX_loongarch64::RegisterContextCorePOSIX_loongarch64(
Thread &thread,
std::unique_ptr<RegisterInfoPOSIX_loongarch64> register_info,
const DataExtractor &gpregset, llvm::ArrayRef<CoreNote> notes)
: RegisterContextPOSIX_loongarch64(thread, std::move(register_info)) {
m_gpr.SetData(std::make_shared<DataBufferHeap>(gpregset.GetDataStart(),
gpregset.GetByteSize()));
m_gpr.SetByteOrder(gpregset.GetByteOrder());
ArchSpec arch = m_register_info_up->GetTargetArchitecture();
DataExtractor fpregset = getRegset(notes, arch.GetTriple(), FPR_Desc);
m_fpr.SetData(std::make_shared<DataBufferHeap>(fpregset.GetDataStart(),
fpregset.GetByteSize()));
m_fpr.SetByteOrder(fpregset.GetByteOrder());
}
RegisterContextCorePOSIX_loongarch64::~RegisterContextCorePOSIX_loongarch64() =
default;
bool RegisterContextCorePOSIX_loongarch64::ReadGPR() { return true; }
bool RegisterContextCorePOSIX_loongarch64::ReadFPR() { return true; }
bool RegisterContextCorePOSIX_loongarch64::WriteGPR() {
assert(false && "Writing registers is not allowed for core dumps");
return false;
}
bool RegisterContextCorePOSIX_loongarch64::WriteFPR() {
assert(false && "Writing registers is not allowed for core dumps");
return false;
}
bool RegisterContextCorePOSIX_loongarch64::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_loongarch64::WriteRegister(
const RegisterInfo *reg_info, const RegisterValue &value) {
return false;
}
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