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marcus.erl |
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/******************************************************************************
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*
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* Module Name: exstore - AML Interpreter object store support
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2007, R. Byron Moore
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include <acpi/acdispat.h>
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#include <acpi/acinterp.h>
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#include <acpi/amlcode.h>
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#include <acpi/acnamesp.h>
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#include <acpi/acparser.h>
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#define _COMPONENT ACPI_EXECUTER
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ACPI_MODULE_NAME("exstore")
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/* Local prototypes */
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static void
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acpi_ex_do_debug_object(union acpi_operand_object *source_desc,
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u32 level, u32 index);
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static acpi_status
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acpi_ex_store_object_to_index(union acpi_operand_object *val_desc,
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union acpi_operand_object *dest_desc,
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struct acpi_walk_state *walk_state);
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/*******************************************************************************
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*
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* FUNCTION: acpi_ex_do_debug_object
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*
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* PARAMETERS: source_desc - Value to be stored
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* Level - Indentation level (used for packages)
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* Index - Current package element, zero if not pkg
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*
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* RETURN: None
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*
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* DESCRIPTION: Handles stores to the Debug Object.
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*
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******************************************************************************/
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static void
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acpi_ex_do_debug_object(union acpi_operand_object *source_desc,
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u32 level, u32 index)
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{
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u32 i;
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ACPI_FUNCTION_TRACE_PTR(ex_do_debug_object, source_desc);
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ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[ACPI Debug] %*s",
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level, " "));
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/* Display index for package output only */
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if (index > 0) {
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ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
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"(%.2u) ", index - 1));
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}
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if (!source_desc) {
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ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "<Null Object>\n"));
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return_VOID;
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}
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if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) == ACPI_DESC_TYPE_OPERAND) {
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ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "%s: ",
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acpi_ut_get_object_type_name
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(source_desc)));
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if (!acpi_ut_valid_internal_object(source_desc)) {
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ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
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"%p, Invalid Internal Object!\n",
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source_desc));
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return_VOID;
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}
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} else if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) ==
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ACPI_DESC_TYPE_NAMED) {
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ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "%s: %p\n",
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acpi_ut_get_type_name(((struct
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acpi_namespace_node
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*)source_desc)->
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type),
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source_desc));
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return_VOID;
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} else {
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return_VOID;
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}
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switch (ACPI_GET_OBJECT_TYPE(source_desc)) {
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case ACPI_TYPE_INTEGER:
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/* Output correct integer width */
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if (acpi_gbl_integer_byte_width == 4) {
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ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "0x%8.8X\n",
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(u32) source_desc->integer.
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value));
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} else {
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ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
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"0x%8.8X%8.8X\n",
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ACPI_FORMAT_UINT64(source_desc->
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| 139 |
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integer.
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value)));
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| 141 |
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}
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break;
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case ACPI_TYPE_BUFFER:
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ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[0x%.2X]\n",
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(u32) source_desc->buffer.length));
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ACPI_DUMP_BUFFER(source_desc->buffer.pointer,
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(source_desc->buffer.length <
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32) ? source_desc->buffer.length : 32);
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break;
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case ACPI_TYPE_STRING:
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ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[0x%.2X] \"%s\"\n",
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source_desc->string.length,
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source_desc->string.pointer));
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break;
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| 160 |
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case ACPI_TYPE_PACKAGE:
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ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
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"[0x%.2X Elements]\n",
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source_desc->package.count));
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/* Output the entire contents of the package */
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for (i = 0; i < source_desc->package.count; i++) {
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acpi_ex_do_debug_object(source_desc->package.
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elements[i], level + 4, i + 1);
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}
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break;
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| 174 |
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case ACPI_TYPE_LOCAL_REFERENCE:
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if (source_desc->reference.opcode == AML_INDEX_OP) {
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ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
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"[%s, 0x%X]\n",
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acpi_ps_get_opcode_name
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(source_desc->reference.opcode),
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source_desc->reference.offset));
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} else {
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ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[%s]\n",
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acpi_ps_get_opcode_name
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(source_desc->reference.opcode)));
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| 186 |
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}
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| 188 |
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if (source_desc->reference.object) {
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| 189 |
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if (ACPI_GET_DESCRIPTOR_TYPE
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| 190 |
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(source_desc->reference.object) ==
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| 191 |
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ACPI_DESC_TYPE_NAMED) {
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| 192 |
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acpi_ex_do_debug_object(((struct
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acpi_namespace_node *)
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source_desc->reference.
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object)->object,
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level + 4, 0);
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| 197 |
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} else {
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| 198 |
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acpi_ex_do_debug_object(source_desc->reference.
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object, level + 4, 0);
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| 200 |
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}
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| 201 |
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} else if (source_desc->reference.node) {
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| 202 |
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acpi_ex_do_debug_object((source_desc->reference.node)->
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| 203 |
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object, level + 4, 0);
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| 204 |
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}
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| 205 |
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break;
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| 206 |
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| 207 |
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default:
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| 208 |
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| 209 |
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ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "%p %s\n",
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| 210 |
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source_desc,
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| 211 |
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acpi_ut_get_object_type_name
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| 212 |
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(source_desc)));
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| 213 |
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break;
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| 214 |
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}
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| 215 |
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| 216 |
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ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "\n"));
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| 217 |
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return_VOID;
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| 218 |
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}
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| 219 |
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| 220 |
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/*******************************************************************************
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| 221 |
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*
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| 222 |
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* FUNCTION: acpi_ex_store
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| 223 |
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*
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| 224 |
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* PARAMETERS: *source_desc - Value to be stored
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| 225 |
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* *dest_desc - Where to store it. Must be an NS node
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| 226 |
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* or an union acpi_operand_object of type
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| 227 |
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* Reference;
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| 228 |
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* walk_state - Current walk state
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| 229 |
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*
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| 230 |
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* RETURN: Status
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| 231 |
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*
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| 232 |
|
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* DESCRIPTION: Store the value described by source_desc into the location
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| 233 |
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* described by dest_desc. Called by various interpreter
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| 234 |
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* functions to store the result of an operation into
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| 235 |
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* the destination operand -- not just simply the actual "Store"
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| 236 |
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* ASL operator.
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| 237 |
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*
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| 238 |
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******************************************************************************/
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| 239 |
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| 240 |
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acpi_status
|
| 241 |
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acpi_ex_store(union acpi_operand_object *source_desc,
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| 242 |
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union acpi_operand_object *dest_desc,
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| 243 |
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struct acpi_walk_state *walk_state)
|
| 244 |
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{
|
| 245 |
|
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acpi_status status = AE_OK;
|
| 246 |
|
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union acpi_operand_object *ref_desc = dest_desc;
|
| 247 |
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|
| 248 |
|
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ACPI_FUNCTION_TRACE_PTR(ex_store, dest_desc);
|
| 249 |
|
|
|
| 250 |
|
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/* Validate parameters */
|
| 251 |
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|
| 252 |
|
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if (!source_desc || !dest_desc) {
|
| 253 |
|
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ACPI_ERROR((AE_INFO, "Null parameter"));
|
| 254 |
|
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return_ACPI_STATUS(AE_AML_NO_OPERAND);
|
| 255 |
|
|
}
|
| 256 |
|
|
|
| 257 |
|
|
/* dest_desc can be either a namespace node or an ACPI object */
|
| 258 |
|
|
|
| 259 |
|
|
if (ACPI_GET_DESCRIPTOR_TYPE(dest_desc) == ACPI_DESC_TYPE_NAMED) {
|
| 260 |
|
|
/*
|
| 261 |
|
|
* Dest is a namespace node,
|
| 262 |
|
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* Storing an object into a Named node.
|
| 263 |
|
|
*/
|
| 264 |
|
|
status = acpi_ex_store_object_to_node(source_desc,
|
| 265 |
|
|
(struct
|
| 266 |
|
|
acpi_namespace_node *)
|
| 267 |
|
|
dest_desc, walk_state,
|
| 268 |
|
|
ACPI_IMPLICIT_CONVERSION);
|
| 269 |
|
|
|
| 270 |
|
|
return_ACPI_STATUS(status);
|
| 271 |
|
|
}
|
| 272 |
|
|
|
| 273 |
|
|
/* Destination object must be a Reference or a Constant object */
|
| 274 |
|
|
|
| 275 |
|
|
switch (ACPI_GET_OBJECT_TYPE(dest_desc)) {
|
| 276 |
|
|
case ACPI_TYPE_LOCAL_REFERENCE:
|
| 277 |
|
|
break;
|
| 278 |
|
|
|
| 279 |
|
|
case ACPI_TYPE_INTEGER:
|
| 280 |
|
|
|
| 281 |
|
|
/* Allow stores to Constants -- a Noop as per ACPI spec */
|
| 282 |
|
|
|
| 283 |
|
|
if (dest_desc->common.flags & AOPOBJ_AML_CONSTANT) {
|
| 284 |
|
|
return_ACPI_STATUS(AE_OK);
|
| 285 |
|
|
}
|
| 286 |
|
|
|
| 287 |
|
|
/*lint -fallthrough */
|
| 288 |
|
|
|
| 289 |
|
|
default:
|
| 290 |
|
|
|
| 291 |
|
|
/* Destination is not a Reference object */
|
| 292 |
|
|
|
| 293 |
|
|
ACPI_ERROR((AE_INFO,
|
| 294 |
|
|
"Target is not a Reference or Constant object - %s [%p]",
|
| 295 |
|
|
acpi_ut_get_object_type_name(dest_desc),
|
| 296 |
|
|
dest_desc));
|
| 297 |
|
|
|
| 298 |
|
|
ACPI_DUMP_STACK_ENTRY(source_desc);
|
| 299 |
|
|
ACPI_DUMP_STACK_ENTRY(dest_desc);
|
| 300 |
|
|
ACPI_DUMP_OPERANDS(&dest_desc, ACPI_IMODE_EXECUTE, "ExStore",
|
| 301 |
|
|
2,
|
| 302 |
|
|
"Target is not a Reference or Constant object");
|
| 303 |
|
|
|
| 304 |
|
|
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
|
| 305 |
|
|
}
|
| 306 |
|
|
|
| 307 |
|
|
/*
|
| 308 |
|
|
* Examine the Reference opcode. These cases are handled:
|
| 309 |
|
|
*
|
| 310 |
|
|
* 1) Store to Name (Change the object associated with a name)
|
| 311 |
|
|
* 2) Store to an indexed area of a Buffer or Package
|
| 312 |
|
|
* 3) Store to a Method Local or Arg
|
| 313 |
|
|
* 4) Store to the debug object
|
| 314 |
|
|
*/
|
| 315 |
|
|
switch (ref_desc->reference.opcode) {
|
| 316 |
|
|
case AML_NAME_OP:
|
| 317 |
|
|
case AML_REF_OF_OP:
|
| 318 |
|
|
|
| 319 |
|
|
/* Storing an object into a Name "container" */
|
| 320 |
|
|
|
| 321 |
|
|
status = acpi_ex_store_object_to_node(source_desc,
|
| 322 |
|
|
ref_desc->reference.
|
| 323 |
|
|
object, walk_state,
|
| 324 |
|
|
ACPI_IMPLICIT_CONVERSION);
|
| 325 |
|
|
break;
|
| 326 |
|
|
|
| 327 |
|
|
case AML_INDEX_OP:
|
| 328 |
|
|
|
| 329 |
|
|
/* Storing to an Index (pointer into a packager or buffer) */
|
| 330 |
|
|
|
| 331 |
|
|
status =
|
| 332 |
|
|
acpi_ex_store_object_to_index(source_desc, ref_desc,
|
| 333 |
|
|
walk_state);
|
| 334 |
|
|
break;
|
| 335 |
|
|
|
| 336 |
|
|
case AML_LOCAL_OP:
|
| 337 |
|
|
case AML_ARG_OP:
|
| 338 |
|
|
|
| 339 |
|
|
/* Store to a method local/arg */
|
| 340 |
|
|
|
| 341 |
|
|
status =
|
| 342 |
|
|
acpi_ds_store_object_to_local(ref_desc->reference.opcode,
|
| 343 |
|
|
ref_desc->reference.offset,
|
| 344 |
|
|
source_desc, walk_state);
|
| 345 |
|
|
break;
|
| 346 |
|
|
|
| 347 |
|
|
case AML_DEBUG_OP:
|
| 348 |
|
|
|
| 349 |
|
|
/*
|
| 350 |
|
|
* Storing to the Debug object causes the value stored to be
|
| 351 |
|
|
* displayed and otherwise has no effect -- see ACPI Specification
|
| 352 |
|
|
*/
|
| 353 |
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
| 354 |
|
|
"**** Write to Debug Object: Object %p %s ****:\n\n",
|
| 355 |
|
|
source_desc,
|
| 356 |
|
|
acpi_ut_get_object_type_name(source_desc)));
|
| 357 |
|
|
|
| 358 |
|
|
acpi_ex_do_debug_object(source_desc, 0, 0);
|
| 359 |
|
|
break;
|
| 360 |
|
|
|
| 361 |
|
|
default:
|
| 362 |
|
|
|
| 363 |
|
|
ACPI_ERROR((AE_INFO, "Unknown Reference opcode %X",
|
| 364 |
|
|
ref_desc->reference.opcode));
|
| 365 |
|
|
ACPI_DUMP_ENTRY(ref_desc, ACPI_LV_ERROR);
|
| 366 |
|
|
|
| 367 |
|
|
status = AE_AML_INTERNAL;
|
| 368 |
|
|
break;
|
| 369 |
|
|
}
|
| 370 |
|
|
|
| 371 |
|
|
return_ACPI_STATUS(status);
|
| 372 |
|
|
}
|
| 373 |
|
|
|
| 374 |
|
|
/*******************************************************************************
|
| 375 |
|
|
*
|
| 376 |
|
|
* FUNCTION: acpi_ex_store_object_to_index
|
| 377 |
|
|
*
|
| 378 |
|
|
* PARAMETERS: *source_desc - Value to be stored
|
| 379 |
|
|
* *dest_desc - Named object to receive the value
|
| 380 |
|
|
* walk_state - Current walk state
|
| 381 |
|
|
*
|
| 382 |
|
|
* RETURN: Status
|
| 383 |
|
|
*
|
| 384 |
|
|
* DESCRIPTION: Store the object to indexed Buffer or Package element
|
| 385 |
|
|
*
|
| 386 |
|
|
******************************************************************************/
|
| 387 |
|
|
|
| 388 |
|
|
static acpi_status
|
| 389 |
|
|
acpi_ex_store_object_to_index(union acpi_operand_object *source_desc,
|
| 390 |
|
|
union acpi_operand_object *index_desc,
|
| 391 |
|
|
struct acpi_walk_state *walk_state)
|
| 392 |
|
|
{
|
| 393 |
|
|
acpi_status status = AE_OK;
|
| 394 |
|
|
union acpi_operand_object *obj_desc;
|
| 395 |
|
|
union acpi_operand_object *new_desc;
|
| 396 |
|
|
u8 value = 0;
|
| 397 |
|
|
u32 i;
|
| 398 |
|
|
|
| 399 |
|
|
ACPI_FUNCTION_TRACE(ex_store_object_to_index);
|
| 400 |
|
|
|
| 401 |
|
|
/*
|
| 402 |
|
|
* Destination must be a reference pointer, and
|
| 403 |
|
|
* must point to either a buffer or a package
|
| 404 |
|
|
*/
|
| 405 |
|
|
switch (index_desc->reference.target_type) {
|
| 406 |
|
|
case ACPI_TYPE_PACKAGE:
|
| 407 |
|
|
/*
|
| 408 |
|
|
* Storing to a package element. Copy the object and replace
|
| 409 |
|
|
* any existing object with the new object. No implicit
|
| 410 |
|
|
* conversion is performed.
|
| 411 |
|
|
*
|
| 412 |
|
|
* The object at *(index_desc->Reference.Where) is the
|
| 413 |
|
|
* element within the package that is to be modified.
|
| 414 |
|
|
* The parent package object is at index_desc->Reference.Object
|
| 415 |
|
|
*/
|
| 416 |
|
|
obj_desc = *(index_desc->reference.where);
|
| 417 |
|
|
|
| 418 |
|
|
status =
|
| 419 |
|
|
acpi_ut_copy_iobject_to_iobject(source_desc, &new_desc,
|
| 420 |
|
|
walk_state);
|
| 421 |
|
|
if (ACPI_FAILURE(status)) {
|
| 422 |
|
|
return_ACPI_STATUS(status);
|
| 423 |
|
|
}
|
| 424 |
|
|
|
| 425 |
|
|
if (obj_desc) {
|
| 426 |
|
|
|
| 427 |
|
|
/* Decrement reference count by the ref count of the parent package */
|
| 428 |
|
|
|
| 429 |
|
|
for (i = 0; i < ((union acpi_operand_object *)
|
| 430 |
|
|
index_desc->reference.object)->common.
|
| 431 |
|
|
reference_count; i++) {
|
| 432 |
|
|
acpi_ut_remove_reference(obj_desc);
|
| 433 |
|
|
}
|
| 434 |
|
|
}
|
| 435 |
|
|
|
| 436 |
|
|
*(index_desc->reference.where) = new_desc;
|
| 437 |
|
|
|
| 438 |
|
|
/* Increment ref count by the ref count of the parent package-1 */
|
| 439 |
|
|
|
| 440 |
|
|
for (i = 1; i < ((union acpi_operand_object *)
|
| 441 |
|
|
index_desc->reference.object)->common.
|
| 442 |
|
|
reference_count; i++) {
|
| 443 |
|
|
acpi_ut_add_reference(new_desc);
|
| 444 |
|
|
}
|
| 445 |
|
|
|
| 446 |
|
|
break;
|
| 447 |
|
|
|
| 448 |
|
|
case ACPI_TYPE_BUFFER_FIELD:
|
| 449 |
|
|
|
| 450 |
|
|
/*
|
| 451 |
|
|
* Store into a Buffer or String (not actually a real buffer_field)
|
| 452 |
|
|
* at a location defined by an Index.
|
| 453 |
|
|
*
|
| 454 |
|
|
* The first 8-bit element of the source object is written to the
|
| 455 |
|
|
* 8-bit Buffer location defined by the Index destination object,
|
| 456 |
|
|
* according to the ACPI 2.0 specification.
|
| 457 |
|
|
*/
|
| 458 |
|
|
|
| 459 |
|
|
/*
|
| 460 |
|
|
* Make sure the target is a Buffer or String. An error should
|
| 461 |
|
|
* not happen here, since the reference_object was constructed
|
| 462 |
|
|
* by the INDEX_OP code.
|
| 463 |
|
|
*/
|
| 464 |
|
|
obj_desc = index_desc->reference.object;
|
| 465 |
|
|
if ((ACPI_GET_OBJECT_TYPE(obj_desc) != ACPI_TYPE_BUFFER) &&
|
| 466 |
|
|
(ACPI_GET_OBJECT_TYPE(obj_desc) != ACPI_TYPE_STRING)) {
|
| 467 |
|
|
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
|
| 468 |
|
|
}
|
| 469 |
|
|
|
| 470 |
|
|
/*
|
| 471 |
|
|
* The assignment of the individual elements will be slightly
|
| 472 |
|
|
* different for each source type.
|
| 473 |
|
|
*/
|
| 474 |
|
|
switch (ACPI_GET_OBJECT_TYPE(source_desc)) {
|
| 475 |
|
|
case ACPI_TYPE_INTEGER:
|
| 476 |
|
|
|
| 477 |
|
|
/* Use the least-significant byte of the integer */
|
| 478 |
|
|
|
| 479 |
|
|
value = (u8) (source_desc->integer.value);
|
| 480 |
|
|
break;
|
| 481 |
|
|
|
| 482 |
|
|
case ACPI_TYPE_BUFFER:
|
| 483 |
|
|
case ACPI_TYPE_STRING:
|
| 484 |
|
|
|
| 485 |
|
|
/* Note: Takes advantage of common string/buffer fields */
|
| 486 |
|
|
|
| 487 |
|
|
value = source_desc->buffer.pointer[0];
|
| 488 |
|
|
break;
|
| 489 |
|
|
|
| 490 |
|
|
default:
|
| 491 |
|
|
|
| 492 |
|
|
/* All other types are invalid */
|
| 493 |
|
|
|
| 494 |
|
|
ACPI_ERROR((AE_INFO,
|
| 495 |
|
|
"Source must be Integer/Buffer/String type, not %s",
|
| 496 |
|
|
acpi_ut_get_object_type_name(source_desc)));
|
| 497 |
|
|
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
|
| 498 |
|
|
}
|
| 499 |
|
|
|
| 500 |
|
|
/* Store the source value into the target buffer byte */
|
| 501 |
|
|
|
| 502 |
|
|
obj_desc->buffer.pointer[index_desc->reference.offset] = value;
|
| 503 |
|
|
break;
|
| 504 |
|
|
|
| 505 |
|
|
default:
|
| 506 |
|
|
ACPI_ERROR((AE_INFO, "Target is not a Package or BufferField"));
|
| 507 |
|
|
status = AE_AML_OPERAND_TYPE;
|
| 508 |
|
|
break;
|
| 509 |
|
|
}
|
| 510 |
|
|
|
| 511 |
|
|
return_ACPI_STATUS(status);
|
| 512 |
|
|
}
|
| 513 |
|
|
|
| 514 |
|
|
/*******************************************************************************
|
| 515 |
|
|
*
|
| 516 |
|
|
* FUNCTION: acpi_ex_store_object_to_node
|
| 517 |
|
|
*
|
| 518 |
|
|
* PARAMETERS: source_desc - Value to be stored
|
| 519 |
|
|
* Node - Named object to receive the value
|
| 520 |
|
|
* walk_state - Current walk state
|
| 521 |
|
|
* implicit_conversion - Perform implicit conversion (yes/no)
|
| 522 |
|
|
*
|
| 523 |
|
|
* RETURN: Status
|
| 524 |
|
|
*
|
| 525 |
|
|
* DESCRIPTION: Store the object to the named object.
|
| 526 |
|
|
*
|
| 527 |
|
|
* The Assignment of an object to a named object is handled here
|
| 528 |
|
|
* The value passed in will replace the current value (if any)
|
| 529 |
|
|
* with the input value.
|
| 530 |
|
|
*
|
| 531 |
|
|
* When storing into an object the data is converted to the
|
| 532 |
|
|
* target object type then stored in the object. This means
|
| 533 |
|
|
* that the target object type (for an initialized target) will
|
| 534 |
|
|
* not be changed by a store operation.
|
| 535 |
|
|
*
|
| 536 |
|
|
* Assumes parameters are already validated.
|
| 537 |
|
|
*
|
| 538 |
|
|
******************************************************************************/
|
| 539 |
|
|
|
| 540 |
|
|
acpi_status
|
| 541 |
|
|
acpi_ex_store_object_to_node(union acpi_operand_object *source_desc,
|
| 542 |
|
|
struct acpi_namespace_node *node,
|
| 543 |
|
|
struct acpi_walk_state *walk_state,
|
| 544 |
|
|
u8 implicit_conversion)
|
| 545 |
|
|
{
|
| 546 |
|
|
acpi_status status = AE_OK;
|
| 547 |
|
|
union acpi_operand_object *target_desc;
|
| 548 |
|
|
union acpi_operand_object *new_desc;
|
| 549 |
|
|
acpi_object_type target_type;
|
| 550 |
|
|
|
| 551 |
|
|
ACPI_FUNCTION_TRACE_PTR(ex_store_object_to_node, source_desc);
|
| 552 |
|
|
|
| 553 |
|
|
/* Get current type of the node, and object attached to Node */
|
| 554 |
|
|
|
| 555 |
|
|
target_type = acpi_ns_get_type(node);
|
| 556 |
|
|
target_desc = acpi_ns_get_attached_object(node);
|
| 557 |
|
|
|
| 558 |
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Storing %p(%s) into node %p(%s)\n",
|
| 559 |
|
|
source_desc,
|
| 560 |
|
|
acpi_ut_get_object_type_name(source_desc), node,
|
| 561 |
|
|
acpi_ut_get_type_name(target_type)));
|
| 562 |
|
|
|
| 563 |
|
|
/*
|
| 564 |
|
|
* Resolve the source object to an actual value
|
| 565 |
|
|
* (If it is a reference object)
|
| 566 |
|
|
*/
|
| 567 |
|
|
status = acpi_ex_resolve_object(&source_desc, target_type, walk_state);
|
| 568 |
|
|
if (ACPI_FAILURE(status)) {
|
| 569 |
|
|
return_ACPI_STATUS(status);
|
| 570 |
|
|
}
|
| 571 |
|
|
|
| 572 |
|
|
/* If no implicit conversion, drop into the default case below */
|
| 573 |
|
|
|
| 574 |
|
|
if ((!implicit_conversion) || (walk_state->opcode == AML_COPY_OP)) {
|
| 575 |
|
|
|
| 576 |
|
|
/* Force execution of default (no implicit conversion) */
|
| 577 |
|
|
|
| 578 |
|
|
target_type = ACPI_TYPE_ANY;
|
| 579 |
|
|
}
|
| 580 |
|
|
|
| 581 |
|
|
/* Do the actual store operation */
|
| 582 |
|
|
|
| 583 |
|
|
switch (target_type) {
|
| 584 |
|
|
case ACPI_TYPE_BUFFER_FIELD:
|
| 585 |
|
|
case ACPI_TYPE_LOCAL_REGION_FIELD:
|
| 586 |
|
|
case ACPI_TYPE_LOCAL_BANK_FIELD:
|
| 587 |
|
|
case ACPI_TYPE_LOCAL_INDEX_FIELD:
|
| 588 |
|
|
|
| 589 |
|
|
/* For fields, copy the source data to the target field. */
|
| 590 |
|
|
|
| 591 |
|
|
status = acpi_ex_write_data_to_field(source_desc, target_desc,
|
| 592 |
|
|
&walk_state->result_obj);
|
| 593 |
|
|
break;
|
| 594 |
|
|
|
| 595 |
|
|
case ACPI_TYPE_INTEGER:
|
| 596 |
|
|
case ACPI_TYPE_STRING:
|
| 597 |
|
|
case ACPI_TYPE_BUFFER:
|
| 598 |
|
|
|
| 599 |
|
|
/*
|
| 600 |
|
|
* These target types are all of type Integer/String/Buffer, and
|
| 601 |
|
|
* therefore support implicit conversion before the store.
|
| 602 |
|
|
*
|
| 603 |
|
|
* Copy and/or convert the source object to a new target object
|
| 604 |
|
|
*/
|
| 605 |
|
|
status =
|
| 606 |
|
|
acpi_ex_store_object_to_object(source_desc, target_desc,
|
| 607 |
|
|
&new_desc, walk_state);
|
| 608 |
|
|
if (ACPI_FAILURE(status)) {
|
| 609 |
|
|
return_ACPI_STATUS(status);
|
| 610 |
|
|
}
|
| 611 |
|
|
|
| 612 |
|
|
if (new_desc != target_desc) {
|
| 613 |
|
|
/*
|
| 614 |
|
|
* Store the new new_desc as the new value of the Name, and set
|
| 615 |
|
|
* the Name's type to that of the value being stored in it.
|
| 616 |
|
|
* source_desc reference count is incremented by attach_object.
|
| 617 |
|
|
*
|
| 618 |
|
|
* Note: This may change the type of the node if an explicit store
|
| 619 |
|
|
* has been performed such that the node/object type has been
|
| 620 |
|
|
* changed.
|
| 621 |
|
|
*/
|
| 622 |
|
|
status =
|
| 623 |
|
|
acpi_ns_attach_object(node, new_desc,
|
| 624 |
|
|
new_desc->common.type);
|
| 625 |
|
|
|
| 626 |
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
| 627 |
|
|
"Store %s into %s via Convert/Attach\n",
|
| 628 |
|
|
acpi_ut_get_object_type_name
|
| 629 |
|
|
(source_desc),
|
| 630 |
|
|
acpi_ut_get_object_type_name
|
| 631 |
|
|
(new_desc)));
|
| 632 |
|
|
}
|
| 633 |
|
|
break;
|
| 634 |
|
|
|
| 635 |
|
|
default:
|
| 636 |
|
|
|
| 637 |
|
|
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
| 638 |
|
|
"Storing %s (%p) directly into node (%p) with no implicit conversion\n",
|
| 639 |
|
|
acpi_ut_get_object_type_name(source_desc),
|
| 640 |
|
|
source_desc, node));
|
| 641 |
|
|
|
| 642 |
|
|
/* No conversions for all other types. Just attach the source object */
|
| 643 |
|
|
|
| 644 |
|
|
status = acpi_ns_attach_object(node, source_desc,
|
| 645 |
|
|
ACPI_GET_OBJECT_TYPE
|
| 646 |
|
|
(source_desc));
|
| 647 |
|
|
break;
|
| 648 |
|
|
}
|
| 649 |
|
|
|
| 650 |
|
|
return_ACPI_STATUS(status);
|
| 651 |
|
|
}
|
