Пример #1
0
bool RegisterContextCorePOSIX_s390x::ReadRegister(const RegisterInfo *reg_info,
                                                  RegisterValue &value) {
  const uint32_t reg = reg_info->kinds[lldb::eRegisterKindLLDB];
  if (reg == LLDB_INVALID_REGNUM)
    return false;

  if (IsGPR(reg)) {
    lldb::offset_t offset = reg_info->byte_offset;
    uint64_t v = m_gpr.GetMaxU64(&offset, reg_info->byte_size);
    if (offset == reg_info->byte_offset + reg_info->byte_size) {
      value.SetUInt(v, reg_info->byte_size);
      return true;
    }
  }

  if (IsFPR(reg)) {
    lldb::offset_t offset = reg_info->byte_offset;
    uint64_t v = m_fpr.GetMaxU64(&offset, reg_info->byte_size);
    if (offset == reg_info->byte_offset + reg_info->byte_size) {
      value.SetUInt(v, reg_info->byte_size);
      return true;
    }
  }

  return false;
}
Пример #2
0
bool RegisterContext::WriteRegisterFromUnsigned(const RegisterInfo *reg_info,
                                                uint64_t uval) {
  if (reg_info) {
    RegisterValue value;
    if (value.SetUInt(uval, reg_info->byte_size))
      return WriteRegister(reg_info, value);
  }
  return false;
}
Пример #3
0
bool UnwindAssemblyInstEmulation::GetRegisterValue(const RegisterInfo &reg_info,
                                                   RegisterValue &reg_value) {
  const uint64_t reg_id = MakeRegisterKindValuePair(reg_info);
  RegisterValueMap::const_iterator pos = m_register_values.find(reg_id);
  if (pos != m_register_values.end()) {
    reg_value = pos->second;
    return true; // We had a real value that comes from an opcode that wrote
                 // to it...
  }
  // We are making up a value that is recognizable...
  reg_value.SetUInt(reg_id, reg_info.byte_size);
  return false;
}
Status NativeRegisterContextLinux_mips64::Read_SR_Config(uint32_t offset,
                                                         const char *reg_name,
                                                         uint32_t size,
                                                         RegisterValue &value) {
  GPR_linux_mips regs;
  ::memset(&regs, 0, sizeof(GPR_linux_mips));

  Status error = NativeProcessLinux::PtraceWrapper(
      PTRACE_GETREGS, m_thread.GetID(), NULL, &regs, sizeof regs);
  if (error.Success()) {
    const lldb_private::ArchSpec &arch =
        m_thread.GetProcess().GetArchitecture();
    void *target_address = ((uint8_t *)&regs) + offset +
                           4 * (arch.GetMachine() == llvm::Triple::mips);
    value.SetUInt(*(uint32_t *)target_address, size);
  }
  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;
}