patch-2.4.6 linux/drivers/acpi/interpreter/amresop.c
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- Lines: 489
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.4.5/linux/drivers/acpi/interpreter/amresop.c
- Orig date:
Mon Jan 22 13:23:42 2001
diff -u --recursive --new-file v2.4.5/linux/drivers/acpi/interpreter/amresop.c linux/drivers/acpi/interpreter/amresop.c
@@ -1,488 +0,0 @@
-
-/******************************************************************************
- *
- * Module Name: amresop - AML Interpreter operand/object resolution
- * $Revision: 22 $
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000, 2001 R. Byron Moore
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-
-#include "acpi.h"
-#include "amlcode.h"
-#include "acparser.h"
-#include "acdispat.h"
-#include "acinterp.h"
-#include "acnamesp.h"
-#include "actables.h"
-#include "acevents.h"
-
-
-#define _COMPONENT INTERPRETER
- MODULE_NAME ("amresop")
-
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_aml_check_object_type
- *
- * PARAMETERS: Type_needed Object type needed
- * This_type Actual object type
- * Object Object pointer
- *
- * RETURN: Status
- *
- * DESCRIPTION: Check required type against actual type
- *
- ******************************************************************************/
-
-ACPI_STATUS
-acpi_aml_check_object_type (
- ACPI_OBJECT_TYPE type_needed,
- ACPI_OBJECT_TYPE this_type,
- void *object)
-{
-
-
- if (type_needed == ACPI_TYPE_ANY) {
- /* All types OK, so we don't perform any typechecks */
-
- return (AE_OK);
- }
-
-
- if (type_needed != this_type) {
- return (AE_AML_OPERAND_TYPE);
- }
-
-
- return (AE_OK);
-}
-
-
-/*******************************************************************************
- *
- * FUNCTION: Acpi_aml_resolve_operands
- *
- * PARAMETERS: Opcode Opcode being interpreted
- * Stack_ptr Top of operand stack
- *
- * RETURN: Status
- *
- * DESCRIPTION: Convert stack entries to required types
- *
- * Each nibble in Arg_types represents one required operand
- * and indicates the required Type:
- *
- * The corresponding stack entry will be converted to the
- * required type if possible, else return an exception
- *
- ******************************************************************************/
-
-ACPI_STATUS
-acpi_aml_resolve_operands (
- u16 opcode,
- ACPI_OPERAND_OBJECT **stack_ptr,
- ACPI_WALK_STATE *walk_state)
-{
- ACPI_OPERAND_OBJECT *obj_desc;
- ACPI_STATUS status = AE_OK;
- u8 object_type;
- ACPI_HANDLE temp_handle;
- u32 arg_types;
- ACPI_OPCODE_INFO *op_info;
- u32 this_arg_type;
- ACPI_OBJECT_TYPE type_needed;
-
-
- op_info = acpi_ps_get_opcode_info (opcode);
- if (ACPI_GET_OP_TYPE (op_info) != ACPI_OP_TYPE_OPCODE) {
- return (AE_AML_BAD_OPCODE);
- }
-
-
- arg_types = op_info->runtime_args;
- if (arg_types == ARGI_INVALID_OPCODE) {
- return (AE_AML_INTERNAL);
- }
-
-
- /*
- * Normal exit is with *Types == '\0' at end of string.
- * Function will return an exception from within the loop upon
- * finding an entry which is not, and cannot be converted
- * to, the required type; if stack underflows; or upon
- * finding a NULL stack entry (which "should never happen").
- */
-
- while (GET_CURRENT_ARG_TYPE (arg_types)) {
- if (!stack_ptr || !*stack_ptr) {
- return (AE_AML_INTERNAL);
- }
-
- /* Extract useful items */
-
- obj_desc = *stack_ptr;
-
- /* Decode the descriptor type */
-
- if (VALID_DESCRIPTOR_TYPE (obj_desc, ACPI_DESC_TYPE_NAMED)) {
- /* Node */
-
- object_type = ((ACPI_NAMESPACE_NODE *) obj_desc)->type;
- }
-
- else if (VALID_DESCRIPTOR_TYPE (obj_desc, ACPI_DESC_TYPE_INTERNAL)) {
- /* ACPI internal object */
-
- object_type = obj_desc->common.type;
-
- /* Check for bad ACPI_OBJECT_TYPE */
-
- if (!acpi_aml_validate_object_type (object_type)) {
- return (AE_AML_OPERAND_TYPE);
- }
-
- if (object_type == (u8) INTERNAL_TYPE_REFERENCE) {
- /*
- * Decode the Reference
- */
-
- op_info = acpi_ps_get_opcode_info (opcode);
- if (ACPI_GET_OP_TYPE (op_info) != ACPI_OP_TYPE_OPCODE) {
- return (AE_AML_BAD_OPCODE);
- }
-
-
- switch (obj_desc->reference.op_code)
- {
- case AML_ZERO_OP:
- case AML_ONE_OP:
- case AML_ONES_OP:
- case AML_DEBUG_OP:
- case AML_NAME_OP:
- case AML_INDEX_OP:
- case AML_ARG_OP:
- case AML_LOCAL_OP:
-
- break;
-
- default:
- return (AE_AML_OPERAND_TYPE);
- break;
- }
- }
- }
-
- else {
- /* Invalid descriptor */
-
- return (AE_AML_OPERAND_TYPE);
- }
-
-
- /*
- * Get one argument type, point to the next
- */
-
- this_arg_type = GET_CURRENT_ARG_TYPE (arg_types);
- INCREMENT_ARG_LIST (arg_types);
-
-
- /*
- * Handle cases where the object does not need to be
- * resolved to a value
- */
-
- switch (this_arg_type)
- {
-
- case ARGI_REFERENCE: /* References */
- case ARGI_INTEGER_REF:
- case ARGI_OBJECT_REF:
- case ARGI_DEVICE_REF:
- case ARGI_TARGETREF: /* TBD: must implement implicit conversion rules before store */
- case ARGI_FIXED_TARGET: /* No implicit conversion before store to target */
- case ARGI_SIMPLE_TARGET: /* Name, Local, or Arg - no implicit conversion */
-
- /* Need an operand of type INTERNAL_TYPE_REFERENCE */
-
- if (VALID_DESCRIPTOR_TYPE (obj_desc, ACPI_DESC_TYPE_NAMED)) /* direct name ptr OK as-is */ {
- goto next_operand;
- }
-
- status = acpi_aml_check_object_type (INTERNAL_TYPE_REFERENCE,
- object_type, obj_desc);
- if (ACPI_FAILURE (status)) {
- return (status);
- }
-
-
- if (AML_NAME_OP == obj_desc->reference.op_code) {
- /*
- * Convert an indirect name ptr to direct name ptr and put
- * it on the stack
- */
-
- temp_handle = obj_desc->reference.object;
- acpi_cm_remove_reference (obj_desc);
- (*stack_ptr) = temp_handle;
- }
-
- goto next_operand;
- break;
-
-
- case ARGI_ANYTYPE:
-
- /*
- * We don't want to resolve Index_op reference objects during
- * a store because this would be an implicit De_ref_of operation.
- * Instead, we just want to store the reference object.
- * -- All others must be resolved below.
- */
-
- if ((opcode == AML_STORE_OP) &&
- ((*stack_ptr)->common.type == INTERNAL_TYPE_REFERENCE) &&
- ((*stack_ptr)->reference.op_code == AML_INDEX_OP))
- {
- goto next_operand;
- }
- break;
- }
-
-
- /*
- * Resolve this object to a value
- */
-
- status = acpi_aml_resolve_to_value (stack_ptr, walk_state);
- if (ACPI_FAILURE (status)) {
- return (status);
- }
-
-
- /*
- * Check the resulting object (value) type
- */
- switch (this_arg_type)
- {
- /*
- * For the simple cases, only one type of resolved object
- * is allowed
- */
- case ARGI_MUTEX:
-
- /* Need an operand of type ACPI_TYPE_MUTEX */
-
- type_needed = ACPI_TYPE_MUTEX;
- break;
-
- case ARGI_EVENT:
-
- /* Need an operand of type ACPI_TYPE_EVENT */
-
- type_needed = ACPI_TYPE_EVENT;
- break;
-
- case ARGI_REGION:
-
- /* Need an operand of type ACPI_TYPE_REGION */
-
- type_needed = ACPI_TYPE_REGION;
- break;
-
- case ARGI_IF: /* If */
-
- /* Need an operand of type INTERNAL_TYPE_IF */
-
- type_needed = INTERNAL_TYPE_IF;
- break;
-
- case ARGI_PACKAGE: /* Package */
-
- /* Need an operand of type ACPI_TYPE_PACKAGE */
-
- type_needed = ACPI_TYPE_PACKAGE;
- break;
-
- case ARGI_ANYTYPE:
-
- /* Any operand type will do */
-
- type_needed = ACPI_TYPE_ANY;
- break;
-
-
- /*
- * The more complex cases allow multiple resolved object types
- */
-
- case ARGI_INTEGER: /* Number */
-
- /*
- * Need an operand of type ACPI_TYPE_INTEGER,
- * But we can implicitly convert from a STRING or BUFFER
- */
- status = acpi_aml_convert_to_integer (stack_ptr, walk_state);
- if (ACPI_FAILURE (status)) {
- if (status == AE_TYPE) {
- return (AE_AML_OPERAND_TYPE);
- }
-
- return (status);
- }
-
- goto next_operand;
- break;
-
-
- case ARGI_BUFFER:
-
- /*
- * Need an operand of type ACPI_TYPE_BUFFER,
- * But we can implicitly convert from a STRING or INTEGER
- */
- status = acpi_aml_convert_to_buffer (stack_ptr, walk_state);
- if (ACPI_FAILURE (status)) {
- if (status == AE_TYPE) {
- return (AE_AML_OPERAND_TYPE);
- }
-
- return (status);
- }
-
- goto next_operand;
- break;
-
-
- case ARGI_STRING:
-
- /*
- * Need an operand of type ACPI_TYPE_STRING,
- * But we can implicitly convert from a BUFFER or INTEGER
- */
- status = acpi_aml_convert_to_string (stack_ptr, walk_state);
- if (ACPI_FAILURE (status)) {
- if (status == AE_TYPE) {
- return (AE_AML_OPERAND_TYPE);
- }
-
- return (status);
- }
-
- goto next_operand;
- break;
-
-
- case ARGI_COMPUTEDATA:
-
- /* Need an operand of type INTEGER, STRING or BUFFER */
-
- if ((ACPI_TYPE_INTEGER != (*stack_ptr)->common.type) &&
- (ACPI_TYPE_STRING != (*stack_ptr)->common.type) &&
- (ACPI_TYPE_BUFFER != (*stack_ptr)->common.type))
- {
- return (AE_AML_OPERAND_TYPE);
- }
- goto next_operand;
- break;
-
-
- case ARGI_DATAOBJECT:
- /*
- * ARGI_DATAOBJECT is only used by the Size_of operator.
- *
- * The ACPI specification allows Size_of to return the size of
- * a Buffer, String or Package. However, the MS ACPI.SYS AML
- * Interpreter also allows an Node reference to return without
- * error with a size of 4.
- */
-
- /* Need a buffer, string, package or Node reference */
-
- if (((*stack_ptr)->common.type != ACPI_TYPE_BUFFER) &&
- ((*stack_ptr)->common.type != ACPI_TYPE_STRING) &&
- ((*stack_ptr)->common.type != ACPI_TYPE_PACKAGE) &&
- ((*stack_ptr)->common.type != INTERNAL_TYPE_REFERENCE))
- {
- return (AE_AML_OPERAND_TYPE);
- }
-
- /*
- * If this is a reference, only allow a reference to an Node.
- */
- if ((*stack_ptr)->common.type == INTERNAL_TYPE_REFERENCE) {
- if (!(*stack_ptr)->reference.node) {
- return (AE_AML_OPERAND_TYPE);
- }
- }
- goto next_operand;
- break;
-
-
- case ARGI_COMPLEXOBJ:
-
- /* Need a buffer or package */
-
- if (((*stack_ptr)->common.type != ACPI_TYPE_BUFFER) &&
- ((*stack_ptr)->common.type != ACPI_TYPE_PACKAGE))
- {
- return (AE_AML_OPERAND_TYPE);
- }
- goto next_operand;
- break;
-
-
- default:
-
- /* Unknown type */
-
- return (AE_BAD_PARAMETER);
- }
-
-
- /*
- * Make sure that the original object was resolved to the
- * required object type (Simple cases only).
- */
- status = acpi_aml_check_object_type (type_needed,
- (*stack_ptr)->common.type, *stack_ptr);
- if (ACPI_FAILURE (status)) {
- return (status);
- }
-
-
-next_operand:
- /*
- * If more operands needed, decrement Stack_ptr to point
- * to next operand on stack
- */
- if (GET_CURRENT_ARG_TYPE (arg_types)) {
- stack_ptr--;
- }
-
- } /* while (*Types) */
-
-
- return (status);
-}
-
-
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