patch-2.4.6 linux/drivers/acpi/interpreter/amresop.c

• 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);
-}
-
-