/******************************************************************************* * * FUNCTION: acpi_format_exception * * PARAMETERS: status - The acpi_status code to be formatted * * RETURN: A string containing the exception text. A valid pointer is * always returned. * * DESCRIPTION: This function translates an ACPI exception into an ASCII * string. Returns "unknown status" string for invalid codes. *
******************************************************************************/ constchar *acpi_format_exception(acpi_status status)
{ conststruct acpi_exception_info *exception;
ACPI_FUNCTION_ENTRY();
exception = acpi_ut_validate_exception(status); if (!exception) {
/******************************************************************************* * * FUNCTION: acpi_ut_validate_exception * * PARAMETERS: status - The acpi_status code to be formatted * * RETURN: A string containing the exception text. NULL if exception is * not valid. * * DESCRIPTION: This function validates and translates an ACPI exception into * an ASCII string. *
******************************************************************************/ conststruct acpi_exception_info *acpi_ut_validate_exception(acpi_status status)
{
u32 sub_status; conststruct acpi_exception_info *exception = NULL;
ACPI_FUNCTION_ENTRY();
/* * Status is composed of two parts, a "type" and an actual code
*/
sub_status = (status & ~AE_CODE_MASK);
switch (status & AE_CODE_MASK) { case AE_CODE_ENVIRONMENTAL:
if (sub_status <= AE_CODE_ENV_MAX) {
exception = &acpi_gbl_exception_names_env[sub_status];
} break;
case AE_CODE_PROGRAMMER:
if (sub_status <= AE_CODE_PGM_MAX) {
exception = &acpi_gbl_exception_names_pgm[sub_status];
} break;
case AE_CODE_ACPI_TABLES:
if (sub_status <= AE_CODE_TBL_MAX) {
exception = &acpi_gbl_exception_names_tbl[sub_status];
} break;
case AE_CODE_AML:
if (sub_status <= AE_CODE_AML_MAX) {
exception = &acpi_gbl_exception_names_aml[sub_status];
} break;
case AE_CODE_CONTROL:
if (sub_status <= AE_CODE_CTRL_MAX) {
exception = &acpi_gbl_exception_names_ctrl[sub_status];
} break;
default:
break;
}
if (!exception || !exception->name) { return (NULL);
}
return (exception);
}
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