bool
EmulateInstruction::WriteRegisterDefault (EmulateInstruction *instruction,
void *baton,
const Context &context,
const RegisterInfo *reg_info,
const RegisterValue ®_value)
{
StreamFile strm (stdout, false);
strm.Printf (" Write to Register (name = %s, value = " , reg_info->name);
reg_value.Dump(&strm, reg_info, false, false, eFormatDefault);
strm.PutCString (", context = ");
context.Dump (strm, instruction);
strm.EOL();
return true;
}
bool UnwindAssemblyInstEmulation::ReadRegister(EmulateInstruction *instruction,
const RegisterInfo *reg_info,
RegisterValue ®_value) {
bool synthetic = GetRegisterValue(*reg_info, reg_value);
Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_UNWIND));
if (log && log->GetVerbose()) {
StreamString strm;
strm.Printf("UnwindAssemblyInstEmulation::ReadRegister (name = \"%s\") => "
"synthetic_value = %i, value = ",
reg_info->name, synthetic);
reg_value.Dump(&strm, reg_info, false, false, eFormatDefault);
log->PutString(strm.GetString());
}
return true;
}
bool
UnwindAssemblyInstEmulation::WriteRegister (EmulateInstruction *instruction,
const EmulateInstruction::Context &context,
const RegisterInfo *reg_info,
const RegisterValue ®_value)
{
Log *log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND));
if (log && log->GetVerbose ())
{
StreamString strm;
strm.Printf ("UnwindAssemblyInstEmulation::WriteRegister (name = \"%s\", value = ", reg_info->name);
reg_value.Dump(&strm, reg_info, false, false, eFormatDefault);
strm.PutCString (", context = ");
context.Dump(strm, instruction);
log->PutCString(strm.GetData());
}
if (!instruction->IsInstructionConditional())
SetRegisterValue (*reg_info, reg_value);
switch (context.type)
{
case EmulateInstruction::eContextInvalid:
case EmulateInstruction::eContextReadOpcode:
case EmulateInstruction::eContextImmediate:
case EmulateInstruction::eContextAdjustBaseRegister:
case EmulateInstruction::eContextRegisterPlusOffset:
case EmulateInstruction::eContextAdjustPC:
case EmulateInstruction::eContextRegisterStore:
case EmulateInstruction::eContextSupervisorCall:
case EmulateInstruction::eContextTableBranchReadMemory:
case EmulateInstruction::eContextWriteRegisterRandomBits:
case EmulateInstruction::eContextWriteMemoryRandomBits:
case EmulateInstruction::eContextArithmetic:
case EmulateInstruction::eContextAdvancePC:
case EmulateInstruction::eContextReturnFromException:
case EmulateInstruction::eContextPushRegisterOnStack:
case EmulateInstruction::eContextRegisterLoad:
// {
// const uint32_t reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()];
// if (reg_num != LLDB_INVALID_REGNUM)
// {
// const bool can_replace_only_if_unspecified = true;
//
// m_curr_row.SetRegisterLocationToUndefined (reg_num,
// can_replace_only_if_unspecified,
// can_replace_only_if_unspecified);
// m_curr_row_modified = true;
// }
// }
break;
case EmulateInstruction::eContextAbsoluteBranchRegister:
case EmulateInstruction::eContextRelativeBranchImmediate:
{
if (context.info_type == EmulateInstruction::eInfoTypeISAAndImmediate &&
context.info.ISAAndImmediate.unsigned_data32 > 0)
{
m_forward_branch_offset = context.info.ISAAndImmediateSigned.signed_data32;
}
else if (context.info_type == EmulateInstruction::eInfoTypeISAAndImmediateSigned &&
context.info.ISAAndImmediateSigned.signed_data32 > 0)
{
m_forward_branch_offset = context.info.ISAAndImmediate.unsigned_data32;
}
else if (context.info_type == EmulateInstruction::eInfoTypeImmediate &&
context.info.unsigned_immediate > 0)
{
m_forward_branch_offset = context.info.unsigned_immediate;
}
else if (context.info_type == EmulateInstruction::eInfoTypeImmediateSigned &&
context.info.signed_immediate > 0)
{
m_forward_branch_offset = context.info.signed_immediate;
}
}
break;
case EmulateInstruction::eContextPopRegisterOffStack:
{
if (!instruction->IsInstructionConditional())
{
const uint32_t reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()];
const uint32_t generic_regnum = reg_info->kinds[eRegisterKindGeneric];
if (reg_num != LLDB_INVALID_REGNUM && generic_regnum != LLDB_REGNUM_GENERIC_SP)
{
switch (context.info_type)
{
case EmulateInstruction::eInfoTypeAddress:
if (m_pushed_regs.find(reg_num) != m_pushed_regs.end() &&
context.info.address == m_pushed_regs[reg_num])
{
m_curr_row->SetRegisterLocationToSame(reg_num,
false /*must_replace*/);
m_curr_row_modified = true;
}
break;
case EmulateInstruction::eInfoTypeISA:
assert((generic_regnum == LLDB_REGNUM_GENERIC_PC ||
generic_regnum == LLDB_REGNUM_GENERIC_FLAGS) &&
"eInfoTypeISA used for poping a register other the the PC/FLAGS");
if (generic_regnum != LLDB_REGNUM_GENERIC_FLAGS)
{
m_curr_row->SetRegisterLocationToSame(reg_num,
false /*must_replace*/);
m_curr_row_modified = true;
}
break;
default:
assert(false && "unhandled case, add code to handle this!");
break;
}
}
}
}
break;
case EmulateInstruction::eContextSetFramePointer:
if (!m_fp_is_cfa && !instruction->IsInstructionConditional())
{
m_fp_is_cfa = true;
m_cfa_reg_info = *reg_info;
const uint32_t cfa_reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()];
assert (cfa_reg_num != LLDB_INVALID_REGNUM);
m_curr_row->GetCFAValue().SetIsRegisterPlusOffset(cfa_reg_num, m_initial_sp -
reg_value.GetAsUInt64());
m_curr_row_modified = true;
}
break;
case EmulateInstruction::eContextAdjustStackPointer:
// If we have created a frame using the frame pointer, don't follow
// subsequent adjustments to the stack pointer.
if (!m_fp_is_cfa && !instruction->IsInstructionConditional())
{
m_curr_row->GetCFAValue().SetIsRegisterPlusOffset(
m_curr_row->GetCFAValue().GetRegisterNumber(),
m_initial_sp - reg_value.GetAsUInt64());
m_curr_row_modified = true;
}
break;
}
return true;
}
bool
UnwindAssemblyInstEmulation::WriteRegister (EmulateInstruction *instruction,
const EmulateInstruction::Context &context,
const RegisterInfo *reg_info,
const RegisterValue ®_value)
{
LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND));
if (log && log->GetVerbose ())
{
StreamString strm;
strm.Printf ("UnwindAssemblyInstEmulation::WriteRegister (name = \"%s\", value = ", reg_info->name);
reg_value.Dump(&strm, reg_info, false, false, eFormatDefault);
strm.PutCString (", context = ");
context.Dump(strm, instruction);
log->PutCString(strm.GetData());
}
const bool must_replace = true;
SetRegisterValue (*reg_info, reg_value);
switch (context.type)
{
default:
case EmulateInstruction::eContextInvalid:
case EmulateInstruction::eContextReadOpcode:
case EmulateInstruction::eContextImmediate:
case EmulateInstruction::eContextAdjustBaseRegister:
case EmulateInstruction::eContextRegisterPlusOffset:
case EmulateInstruction::eContextAdjustPC:
case EmulateInstruction::eContextRegisterStore:
case EmulateInstruction::eContextRegisterLoad:
case EmulateInstruction::eContextRelativeBranchImmediate:
case EmulateInstruction::eContextAbsoluteBranchRegister:
case EmulateInstruction::eContextSupervisorCall:
case EmulateInstruction::eContextTableBranchReadMemory:
case EmulateInstruction::eContextWriteRegisterRandomBits:
case EmulateInstruction::eContextWriteMemoryRandomBits:
case EmulateInstruction::eContextArithmetic:
case EmulateInstruction::eContextAdvancePC:
case EmulateInstruction::eContextReturnFromException:
case EmulateInstruction::eContextPushRegisterOnStack:
// {
// const uint32_t reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()];
// if (reg_num != LLDB_INVALID_REGNUM)
// {
// const bool can_replace_only_if_unspecified = true;
//
// m_curr_row.SetRegisterLocationToUndefined (reg_num,
// can_replace_only_if_unspecified,
// can_replace_only_if_unspecified);
// }
// }
break;
case EmulateInstruction::eContextPopRegisterOffStack:
{
const uint32_t reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()];
if (reg_num != LLDB_INVALID_REGNUM)
{
m_curr_row.SetRegisterLocationToSame (reg_num, must_replace);
}
}
break;
case EmulateInstruction::eContextSetFramePointer:
if (!m_fp_is_cfa)
{
m_fp_is_cfa = true;
m_cfa_reg_info = *reg_info;
const uint32_t cfa_reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()];
assert (cfa_reg_num != LLDB_INVALID_REGNUM);
m_curr_row.SetCFARegister(cfa_reg_num);
m_curr_row.SetCFAOffset(m_initial_sp - reg_value.GetAsUInt64());
}
break;
case EmulateInstruction::eContextAdjustStackPointer:
// If we have created a frame using the frame pointer, don't follow
// subsequent adjustments to the stack pointer.
if (!m_fp_is_cfa)
{
m_curr_row.SetCFAOffset (m_initial_sp - reg_value.GetAsUInt64());
}
break;
}
return true;
}