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//===-- RegisterContextFreeBSDKernel_x86_64.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 "RegisterContextFreeBSDKernel_x86_64.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/Thread.h"
#include "lldb/Utility/RegisterValue.h"
#include "llvm/Support/Endian.h"
using namespace lldb;
using namespace lldb_private;
RegisterContextFreeBSDKernel_x86_64::RegisterContextFreeBSDKernel_x86_64(
Thread &thread, RegisterInfoInterface *register_info, lldb::addr_t pcb_addr)
: RegisterContextPOSIX_x86(thread, 0, register_info), m_pcb_addr(pcb_addr) {
}
bool RegisterContextFreeBSDKernel_x86_64::ReadGPR() { return true; }
bool RegisterContextFreeBSDKernel_x86_64::ReadFPR() { return true; }
bool RegisterContextFreeBSDKernel_x86_64::WriteGPR() {
assert(0);
return false;
}
bool RegisterContextFreeBSDKernel_x86_64::WriteFPR() {
assert(0);
return false;
}
bool RegisterContextFreeBSDKernel_x86_64::ReadRegister(
const RegisterInfo *reg_info, RegisterValue &value) {
if (m_pcb_addr == LLDB_INVALID_ADDRESS)
return false;
struct {
llvm::support::ulittle64_t r15;
llvm::support::ulittle64_t r14;
llvm::support::ulittle64_t r13;
llvm::support::ulittle64_t r12;
llvm::support::ulittle64_t rbp;
llvm::support::ulittle64_t rsp;
llvm::support::ulittle64_t rbx;
llvm::support::ulittle64_t rip;
} pcb;
Status error;
size_t rd =
m_thread.GetProcess()->ReadMemory(m_pcb_addr, &pcb, sizeof(pcb), error);
if (rd != sizeof(pcb))
return false;
uint32_t reg = reg_info->kinds[lldb::eRegisterKindLLDB];
switch (reg) {
#define REG(x) \
case lldb_##x##_x86_64: \
value = pcb.x; \
break;
REG(r15);
REG(r14);
REG(r13);
REG(r12);
REG(rbp);
REG(rsp);
REG(rbx);
REG(rip);
#undef REG
default:
return false;
}
return true;
}
bool RegisterContextFreeBSDKernel_x86_64::WriteRegister(
const RegisterInfo *reg_info, const RegisterValue &value) {
return false;
}
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