bool EmulateInstruction::ReadRegisterDefault(EmulateInstruction *instruction,
void *baton,
const RegisterInfo *reg_info,
RegisterValue ®_value) {
StreamFile strm(stdout, false);
strm.Printf(" Read Register (%s)\n", reg_info->name);
lldb::RegisterKind reg_kind;
uint32_t reg_num;
if (GetBestRegisterKindAndNumber(reg_info, reg_kind, reg_num))
reg_value.SetUInt64((uint64_t)reg_kind << 24 | reg_num);
else
reg_value.SetUInt64(0);
return true;
}
bool
RegisterContextPOSIXProcessMonitor_powerpc::ReadRegister(const RegisterInfo *reg_info, RegisterValue &value)
{
if (!reg_info)
return false;
const uint32_t reg = reg_info->kinds[eRegisterKindLLDB];
if (IsFPR(reg))
{
if (!ReadFPR())
return false;
uint8_t *src = (uint8_t *)&m_fpr_powerpc + reg_info->byte_offset;
value.SetUInt64(*(uint64_t*)src);
}
else if (IsGPR(reg))
{
bool success = ReadRegister(reg, value);
if (success)
{
// If our return byte size was greater than the return value reg size, then
// use the type specified by reg_info rather than the uint64_t default
if (value.GetByteSize() > reg_info->byte_size)
value.SetType(reg_info);
}
return success;
}
return false;
}
Error
NativeRegisterContextLinux::DoReadRegisterValue(uint32_t offset,
const char* reg_name,
uint32_t size,
RegisterValue &value)
{
Log *log (ProcessPOSIXLog::GetLogIfAllCategoriesSet (POSIX_LOG_REGISTERS));
long data;
Error error = NativeProcessLinux::PtraceWrapper(
PTRACE_PEEKUSER, m_thread.GetID(), reinterpret_cast<void *>(offset), nullptr, 0, &data);
if (error.Success())
// First cast to an unsigned of the same size to avoid sign extension.
value.SetUInt64(static_cast<unsigned long>(data));
if (log)
log->Printf ("NativeRegisterContextLinux::%s() reg %s: 0x%lx", __FUNCTION__, reg_name, data);
return error;
}
bool
RegisterContextPOSIXProcessMonitor_arm::ReadRegister(const RegisterInfo *reg_info, RegisterValue &value)
{
if (!reg_info)
return false;
const uint32_t reg = reg_info->kinds[eRegisterKindLLDB];
if (IsFPR(reg))
{
if (!ReadFPR())
return false;
}
else
{
return ReadRegister(reg, value);
}
// Get pointer to m_fpr variable and set the data from it.
assert (reg_info->byte_offset < sizeof m_fpr);
uint8_t *src = (uint8_t *)&m_fpr + reg_info->byte_offset;
switch (reg_info->byte_size)
{
case 2:
value.SetUInt16(*(uint16_t *)src);
return true;
case 4:
value.SetUInt32(*(uint32_t *)src);
return true;
case 8:
value.SetUInt64(*(uint64_t *)src);
return true;
default:
assert(false && "Unhandled data size.");
return false;
}
}
bool
RegisterContextWindows_x64::ReadRegister(const RegisterInfo *reg_info, RegisterValue ®_value)
{
if (!CacheAllRegisterValues())
return false;
switch (reg_info->kinds[eRegisterKindLLDB])
{
case lldb_rax_x86_64:
reg_value.SetUInt64(m_context.Rax);
break;
case lldb_rbx_x86_64:
reg_value.SetUInt64(m_context.Rbx);
break;
case lldb_rcx_x86_64:
reg_value.SetUInt64(m_context.Rcx);
break;
case lldb_rdx_x86_64:
reg_value.SetUInt64(m_context.Rdx);
break;
case lldb_rdi_x86_64:
reg_value.SetUInt64(m_context.Rdi);
break;
case lldb_rsi_x86_64:
reg_value.SetUInt64(m_context.Rsi);
break;
case lldb_r8_x86_64:
reg_value.SetUInt64(m_context.R8);
break;
case lldb_r9_x86_64:
reg_value.SetUInt64(m_context.R9);
break;
case lldb_r10_x86_64:
reg_value.SetUInt64(m_context.R10);
break;
case lldb_r11_x86_64:
reg_value.SetUInt64(m_context.R11);
break;
case lldb_r12_x86_64:
reg_value.SetUInt64(m_context.R12);
break;
case lldb_r13_x86_64:
reg_value.SetUInt64(m_context.R13);
break;
case lldb_r14_x86_64:
reg_value.SetUInt64(m_context.R14);
break;
case lldb_r15_x86_64:
reg_value.SetUInt64(m_context.R15);
break;
case lldb_rbp_x86_64:
reg_value.SetUInt64(m_context.Rbp);
break;
case lldb_rsp_x86_64:
reg_value.SetUInt64(m_context.Rsp);
break;
case lldb_rip_x86_64:
reg_value.SetUInt64(m_context.Rip);
break;
case lldb_rflags_x86_64:
reg_value.SetUInt64(m_context.EFlags);
break;
}
return true;
}
bool RegisterContextDarwin_arm64::ReadRegister(const RegisterInfo *reg_info,
RegisterValue &value) {
const uint32_t reg = reg_info->kinds[eRegisterKindLLDB];
int set = RegisterContextDarwin_arm64::GetSetForNativeRegNum(reg);
if (set == -1)
return false;
if (ReadRegisterSet(set, false) != KERN_SUCCESS)
return false;
switch (reg) {
case gpr_x0:
case gpr_x1:
case gpr_x2:
case gpr_x3:
case gpr_x4:
case gpr_x5:
case gpr_x6:
case gpr_x7:
case gpr_x8:
case gpr_x9:
case gpr_x10:
case gpr_x11:
case gpr_x12:
case gpr_x13:
case gpr_x14:
case gpr_x15:
case gpr_x16:
case gpr_x17:
case gpr_x18:
case gpr_x19:
case gpr_x20:
case gpr_x21:
case gpr_x22:
case gpr_x23:
case gpr_x24:
case gpr_x25:
case gpr_x26:
case gpr_x27:
case gpr_x28:
case gpr_fp:
case gpr_sp:
case gpr_lr:
case gpr_pc:
case gpr_cpsr:
value.SetUInt64(gpr.x[reg - gpr_x0]);
break;
case gpr_w0:
case gpr_w1:
case gpr_w2:
case gpr_w3:
case gpr_w4:
case gpr_w5:
case gpr_w6:
case gpr_w7:
case gpr_w8:
case gpr_w9:
case gpr_w10:
case gpr_w11:
case gpr_w12:
case gpr_w13:
case gpr_w14:
case gpr_w15:
case gpr_w16:
case gpr_w17:
case gpr_w18:
case gpr_w19:
case gpr_w20:
case gpr_w21:
case gpr_w22:
case gpr_w23:
case gpr_w24:
case gpr_w25:
case gpr_w26:
case gpr_w27:
case gpr_w28: {
ProcessSP process_sp(m_thread.GetProcess());
if (process_sp.get()) {
DataExtractor regdata(&gpr.x[reg - gpr_w0], 8, process_sp->GetByteOrder(),
process_sp->GetAddressByteSize());
offset_t offset = 0;
uint64_t retval = regdata.GetMaxU64(&offset, 8);
uint32_t retval_lower32 = static_cast<uint32_t>(retval & 0xffffffff);
value.SetUInt32(retval_lower32);
}
} break;
case fpu_v0:
case fpu_v1:
case fpu_v2:
case fpu_v3:
case fpu_v4:
case fpu_v5:
case fpu_v6:
case fpu_v7:
case fpu_v8:
case fpu_v9:
case fpu_v10:
case fpu_v11:
case fpu_v12:
case fpu_v13:
case fpu_v14:
case fpu_v15:
case fpu_v16:
case fpu_v17:
case fpu_v18:
case fpu_v19:
case fpu_v20:
case fpu_v21:
case fpu_v22:
case fpu_v23:
case fpu_v24:
case fpu_v25:
case fpu_v26:
case fpu_v27:
case fpu_v28:
case fpu_v29:
case fpu_v30:
case fpu_v31:
value.SetBytes(fpu.v[reg].bytes, reg_info->byte_size,
endian::InlHostByteOrder());
break;
case fpu_s0:
case fpu_s1:
case fpu_s2:
case fpu_s3:
case fpu_s4:
case fpu_s5:
case fpu_s6:
case fpu_s7:
case fpu_s8:
case fpu_s9:
case fpu_s10:
case fpu_s11:
case fpu_s12:
case fpu_s13:
case fpu_s14:
case fpu_s15:
case fpu_s16:
case fpu_s17:
case fpu_s18:
case fpu_s19:
case fpu_s20:
case fpu_s21:
case fpu_s22:
case fpu_s23:
case fpu_s24:
case fpu_s25:
case fpu_s26:
case fpu_s27:
case fpu_s28:
case fpu_s29:
case fpu_s30:
case fpu_s31: {
ProcessSP process_sp(m_thread.GetProcess());
if (process_sp.get()) {
DataExtractor regdata(&fpu.v[reg - fpu_s0], 4, process_sp->GetByteOrder(),
process_sp->GetAddressByteSize());
offset_t offset = 0;
value.SetFloat(regdata.GetFloat(&offset));
}
} break;
case fpu_d0:
case fpu_d1:
case fpu_d2:
case fpu_d3:
case fpu_d4:
case fpu_d5:
case fpu_d6:
case fpu_d7:
case fpu_d8:
case fpu_d9:
case fpu_d10:
case fpu_d11:
case fpu_d12:
case fpu_d13:
case fpu_d14:
case fpu_d15:
case fpu_d16:
case fpu_d17:
case fpu_d18:
case fpu_d19:
case fpu_d20:
case fpu_d21:
case fpu_d22:
case fpu_d23:
case fpu_d24:
case fpu_d25:
case fpu_d26:
case fpu_d27:
case fpu_d28:
case fpu_d29:
case fpu_d30:
case fpu_d31: {
ProcessSP process_sp(m_thread.GetProcess());
if (process_sp.get()) {
DataExtractor regdata(&fpu.v[reg - fpu_s0], 8, process_sp->GetByteOrder(),
process_sp->GetAddressByteSize());
offset_t offset = 0;
value.SetDouble(regdata.GetDouble(&offset));
}
} break;
case fpu_fpsr:
value.SetUInt32(fpu.fpsr);
break;
case fpu_fpcr:
value.SetUInt32(fpu.fpcr);
break;
case exc_exception:
value.SetUInt32(exc.exception);
break;
case exc_esr:
value.SetUInt32(exc.esr);
break;
case exc_far:
value.SetUInt64(exc.far);
break;
default:
value.SetValueToInvalid();
return false;
}
return true;
}
bool
RegisterContextDarwin_arm64::ReadRegister (const RegisterInfo *reg_info, RegisterValue &value)
{
const uint32_t reg = reg_info->kinds[eRegisterKindLLDB];
int set = RegisterContextDarwin_arm64::GetSetForNativeRegNum (reg);
if (set == -1)
return false;
if (ReadRegisterSet(set, false) != KERN_SUCCESS)
return false;
switch (reg)
{
case gpr_x0:
case gpr_x1:
case gpr_x2:
case gpr_x3:
case gpr_x4:
case gpr_x5:
case gpr_x6:
case gpr_x7:
case gpr_x8:
case gpr_x9:
case gpr_x10:
case gpr_x11:
case gpr_x12:
case gpr_x13:
case gpr_x14:
case gpr_x15:
case gpr_x16:
case gpr_x17:
case gpr_x18:
case gpr_x19:
case gpr_x20:
case gpr_x21:
case gpr_x22:
case gpr_x23:
case gpr_x24:
case gpr_x25:
case gpr_x26:
case gpr_x27:
case gpr_x28:
case gpr_fp:
case gpr_sp:
case gpr_lr:
case gpr_pc:
case gpr_cpsr:
value.SetUInt64 (gpr.x[reg - gpr_x0]);
break;
case fpu_v0:
case fpu_v1:
case fpu_v2:
case fpu_v3:
case fpu_v4:
case fpu_v5:
case fpu_v6:
case fpu_v7:
case fpu_v8:
case fpu_v9:
case fpu_v10:
case fpu_v11:
case fpu_v12:
case fpu_v13:
case fpu_v14:
case fpu_v15:
case fpu_v16:
case fpu_v17:
case fpu_v18:
case fpu_v19:
case fpu_v20:
case fpu_v21:
case fpu_v22:
case fpu_v23:
case fpu_v24:
case fpu_v25:
case fpu_v26:
case fpu_v27:
case fpu_v28:
case fpu_v29:
case fpu_v30:
case fpu_v31:
value.SetBytes(fpu.v[reg].bytes, reg_info->byte_size, lldb::endian::InlHostByteOrder());
break;
case fpu_fpsr:
value.SetUInt32 (fpu.fpsr);
break;
case fpu_fpcr:
value.SetUInt32 (fpu.fpcr);
break;
case exc_exception:
value.SetUInt32 (exc.exception);
break;
case exc_esr:
value.SetUInt32 (exc.esr);
break;
case exc_far:
value.SetUInt64 (exc.far);
break;
default:
value.SetValueToInvalid();
return false;
}
return true;
}
Status
NativeRegisterContextLinux_s390x::ReadRegister(const RegisterInfo *reg_info,
RegisterValue ®_value) {
if (!reg_info)
return Status("reg_info NULL");
const uint32_t reg = reg_info->kinds[lldb::eRegisterKindLLDB];
if (reg == LLDB_INVALID_REGNUM)
return Status("register \"%s\" is an internal-only lldb register, cannot "
"read directly",
reg_info->name);
if (IsGPR(reg)) {
s390_regs regs;
Status error = DoReadGPR(®s, sizeof(regs));
if (error.Fail())
return error;
uint8_t *src = (uint8_t *)®s + reg_info->byte_offset;
assert(reg_info->byte_offset + reg_info->byte_size <= sizeof(regs));
switch (reg_info->byte_size) {
case 4:
reg_value.SetUInt32(*(uint32_t *)src);
break;
case 8:
reg_value.SetUInt64(*(uint64_t *)src);
break;
default:
assert(false && "Unhandled data size.");
return Status("unhandled byte size: %" PRIu32, reg_info->byte_size);
}
return Status();
}
if (IsFPR(reg)) {
s390_fp_regs fp_regs;
Status error = DoReadFPR(&fp_regs, sizeof(fp_regs));
if (error.Fail())
return error;
// byte_offset is just the offset within FPR, not the whole user area.
uint8_t *src = (uint8_t *)&fp_regs + reg_info->byte_offset;
assert(reg_info->byte_offset + reg_info->byte_size <= sizeof(fp_regs));
switch (reg_info->byte_size) {
case 4:
reg_value.SetUInt32(*(uint32_t *)src);
break;
case 8:
reg_value.SetUInt64(*(uint64_t *)src);
break;
default:
assert(false && "Unhandled data size.");
return Status("unhandled byte size: %" PRIu32, reg_info->byte_size);
}
return Status();
}
if (reg == lldb_last_break_s390x) {
uint64_t last_break;
Status error = DoReadRegisterSet(NT_S390_LAST_BREAK, &last_break, 8);
if (error.Fail())
return error;
reg_value.SetUInt64(last_break);
return Status();
}
if (reg == lldb_system_call_s390x) {
uint32_t system_call;
Status error = DoReadRegisterSet(NT_S390_SYSTEM_CALL, &system_call, 4);
if (error.Fail())
return error;
reg_value.SetUInt32(system_call);
return Status();
}
return Status("failed - register wasn't recognized");
}
lldb_private::Error
NativeRegisterContextLinux_mips64::ReadRegister (const RegisterInfo *reg_info, RegisterValue ®_value)
{
Error error;
if (!reg_info)
{
error.SetErrorString ("reg_info NULL");
return error;
}
const uint32_t reg = reg_info->kinds[lldb::eRegisterKindLLDB];
if (reg == LLDB_INVALID_REGNUM)
{
// This is likely an internal register for lldb use only and should not be directly queried.
error.SetErrorStringWithFormat ("register \"%s\" is an internal-only lldb register, cannot read directly", reg_info->name);
return error;
}
if (IsMSA(reg) && !IsMSAAvailable())
{
error.SetErrorString ("MSA not available on this processor");
return error;
}
if (IsMSA(reg) || IsFPR(reg))
{
uint8_t *src;
error = ReadCP1();
if (!error.Success())
{
error.SetErrorString ("failed to read co-processor 1 register");
return error;
}
if (IsFPR(reg))
{
assert (reg_info->byte_offset < sizeof(UserArea));
src = (uint8_t *)&m_fpr + reg_info->byte_offset - (sizeof(m_gpr));
}
else
{
assert (reg_info->byte_offset < sizeof(UserArea));
src = (uint8_t *)&m_msa + reg_info->byte_offset - (sizeof(m_gpr) + sizeof(m_fpr));
}
switch (reg_info->byte_size)
{
case 4:
reg_value.SetUInt32(*(uint32_t *)src);
break;
case 8:
reg_value.SetUInt64(*(uint64_t *)src);
break;
case 16:
reg_value.SetBytes((const void *)src, 16, GetByteOrder());
break;
default:
assert(false && "Unhandled data size.");
error.SetErrorStringWithFormat ("unhandled byte size: %" PRIu32, reg_info->byte_size);
break;
}
}
else
{
error = ReadRegisterRaw(reg, reg_value);
}
return error;
}
bool
RegisterContextMacOSXFrameBackchain::ReadRegister (const RegisterInfo *reg_info,
RegisterValue &value)
{
if (!m_cursor_is_valid)
return false;
uint64_t reg_value = LLDB_INVALID_ADDRESS;
switch (reg_info->kinds[eRegisterKindGeneric])
{
case LLDB_REGNUM_GENERIC_PC:
if (m_cursor.pc == LLDB_INVALID_ADDRESS)
return false;
reg_value = m_cursor.pc;
break;
case LLDB_REGNUM_GENERIC_FP:
if (m_cursor.fp == LLDB_INVALID_ADDRESS)
return false;
reg_value = m_cursor.fp;
break;
default:
return false;
}
switch (reg_info->encoding)
{
case eEncodingInvalid:
case eEncodingVector:
break;
case eEncodingUint:
case eEncodingSint:
value.SetUInt(reg_value, reg_info->byte_size);
return true;
case eEncodingIEEE754:
switch (reg_info->byte_size)
{
case sizeof (float):
if (sizeof (float) == sizeof(uint32_t))
{
value.SetUInt32(reg_value, RegisterValue::eTypeFloat);
return true;
}
else if (sizeof (float) == sizeof(uint64_t))
{
value.SetUInt64(reg_value, RegisterValue::eTypeFloat);
return true;
}
break;
case sizeof (double):
if (sizeof (double) == sizeof(uint32_t))
{
value.SetUInt32(reg_value, RegisterValue::eTypeDouble);
return true;
}
else if (sizeof (double) == sizeof(uint64_t))
{
value.SetUInt64(reg_value, RegisterValue::eTypeDouble);
return true;
}
break;
// TOOD: need a better way to detect when "long double" types are
// the same bytes size as "double"
#if !defined(__arm__)
case sizeof (long double):
if (sizeof (long double) == sizeof(uint32_t))
{
value.SetUInt32(reg_value, RegisterValue::eTypeLongDouble);
return true;
}
else if (sizeof (long double) == sizeof(uint64_t))
{
value.SetUInt64(reg_value, RegisterValue::eTypeLongDouble);
return true;
}
break;
#endif
}
break;
}
return false;
}