ACPI_STATUS
AcpiOsActualTableOverride (
ACPI_TABLE_HEADER *ExistingTable,
ACPI_TABLE_HEADER **NewTable)
{
#ifndef ACPI_EXEC_APP
char TableName[ACPI_NAME_SIZE + 1];
#endif
if (!ExistingTable || !NewTable)
{
return (AE_BAD_PARAMETER);
}
*NewTable = NULL;
#ifdef ACPI_EXEC_APP
/* This code exercises the table override mechanism in the core */
#ifdef OBSOLETE_CODE
if (ACPI_COMPARE_NAME (ExistingTable->Signature, ACPI_SIG_DSDT))
{
/* override DSDT with itself */
*NewTable = AcpiGbl_DbTablePtr;
}
#endif
#else
/* Construct a null-terminated string from table signature */
TableName[ACPI_NAME_SIZE] = 0;
ACPI_STRNCPY (TableName, ExistingTable->Signature, ACPI_NAME_SIZE);
*NewTable = OsGetTable (TableName);
if (*NewTable)
{
AcpiOsPrintf ("%s obtained from registry, %d bytes\n",
TableName, (*NewTable)->Length);
}
else
{
AcpiOsPrintf ("Could not read %s from registry\n", TableName);
}
#endif
return (AE_OK);
}
ACPI_STATUS
AcpiOsTableOverride (
ACPI_TABLE_HEADER *ExistingTable,
ACPI_TABLE_HEADER **NewTable)
{
if (!ExistingTable || !NewTable)
{
return (AE_BAD_PARAMETER);
}
*NewTable = NULL;
#ifdef ACPI_EXEC_APP
/* Call back up to AcpiExec */
AeTableOverride (ExistingTable, NewTable);
#endif
#ifdef ACPI_ASL_COMPILER
/* Attempt to get the table from the registry */
/* Construct a null-terminated string from table signature */
TableName[ACPI_NAME_SIZE] = 0;
ACPI_STRNCPY (TableName, ExistingTable->Signature, ACPI_NAME_SIZE);
*NewTable = OsGetTable (TableName);
if (*NewTable)
{
AcpiOsPrintf ("Table [%s] obtained from registry, %u bytes\n",
TableName, (*NewTable)->Length);
}
else
{
AcpiOsPrintf ("Could not read table %s from registry\n", TableName);
}
#endif
return (AE_OK);
}
