875 lines
22 KiB
C
875 lines
22 KiB
C
/******************************************************************************
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*
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* Module Name: psloop - Main AML parse loop
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2005, 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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/*
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* Parse the AML and build an operation tree as most interpreters,
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* like Perl, do. Parsing is done by hand rather than with a YACC
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* generated parser to tightly constrain stack and dynamic memory
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* usage. At the same time, parsing is kept flexible and the code
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* fairly compact by parsing based on a list of AML opcode
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* templates in aml_op_info[]
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*/
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#include <acpi/acpi.h>
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#include <acpi/acparser.h>
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#include <acpi/acdispat.h>
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#include <acpi/amlcode.h>
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#define _COMPONENT ACPI_PARSER
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ACPI_MODULE_NAME("psloop")
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static u32 acpi_gbl_depth = 0;
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/*******************************************************************************
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*
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* FUNCTION: acpi_ps_parse_loop
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*
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* PARAMETERS: walk_state - Current state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Parse AML (pointed to by the current parser state) and return
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* a tree of ops.
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*
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******************************************************************************/
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acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
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{
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acpi_status status = AE_OK;
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acpi_status status2;
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union acpi_parse_object *op = NULL; /* current op */
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union acpi_parse_object *arg = NULL;
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union acpi_parse_object *pre_op = NULL;
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struct acpi_parse_state *parser_state;
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u8 *aml_op_start = NULL;
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ACPI_FUNCTION_TRACE_PTR("ps_parse_loop", walk_state);
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if (walk_state->descending_callback == NULL) {
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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parser_state = &walk_state->parser_state;
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walk_state->arg_types = 0;
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#if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY))
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if (walk_state->walk_type & ACPI_WALK_METHOD_RESTART) {
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/* We are restarting a preempted control method */
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if (acpi_ps_has_completed_scope(parser_state)) {
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/*
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* We must check if a predicate to an IF or WHILE statement
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* was just completed
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*/
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if ((parser_state->scope->parse_scope.op) &&
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((parser_state->scope->parse_scope.op->common.
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aml_opcode == AML_IF_OP)
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|| (parser_state->scope->parse_scope.op->common.
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aml_opcode == AML_WHILE_OP))
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&& (walk_state->control_state)
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&& (walk_state->control_state->common.state ==
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ACPI_CONTROL_PREDICATE_EXECUTING)) {
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/*
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* A predicate was just completed, get the value of the
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* predicate and branch based on that value
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*/
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walk_state->op = NULL;
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status =
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acpi_ds_get_predicate_value(walk_state,
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ACPI_TO_POINTER
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(TRUE));
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if (ACPI_FAILURE(status)
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&& ((status & AE_CODE_MASK) !=
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AE_CODE_CONTROL)) {
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if (status == AE_AML_NO_RETURN_VALUE) {
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ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
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"Invoked method did not return a value, %s\n",
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acpi_format_exception
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(status)));
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}
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ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
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"get_predicate Failed, %s\n",
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acpi_format_exception
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(status)));
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return_ACPI_STATUS(status);
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}
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status =
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acpi_ps_next_parse_state(walk_state, op,
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status);
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}
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acpi_ps_pop_scope(parser_state, &op,
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&walk_state->arg_types,
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&walk_state->arg_count);
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ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
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"Popped scope, Op=%p\n", op));
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} else if (walk_state->prev_op) {
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/* We were in the middle of an op */
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op = walk_state->prev_op;
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walk_state->arg_types = walk_state->prev_arg_types;
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}
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}
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#endif
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/* Iterative parsing loop, while there is more AML to process: */
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while ((parser_state->aml < parser_state->aml_end) || (op)) {
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aml_op_start = parser_state->aml;
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if (!op) {
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/* Get the next opcode from the AML stream */
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walk_state->aml_offset =
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(u32) ACPI_PTR_DIFF(parser_state->aml,
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parser_state->aml_start);
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walk_state->opcode = acpi_ps_peek_opcode(parser_state);
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/*
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* First cut to determine what we have found:
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* 1) A valid AML opcode
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* 2) A name string
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* 3) An unknown/invalid opcode
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*/
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walk_state->op_info =
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acpi_ps_get_opcode_info(walk_state->opcode);
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switch (walk_state->op_info->class) {
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case AML_CLASS_ASCII:
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case AML_CLASS_PREFIX:
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/*
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* Starts with a valid prefix or ASCII char, this is a name
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* string. Convert the bare name string to a namepath.
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*/
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walk_state->opcode = AML_INT_NAMEPATH_OP;
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walk_state->arg_types = ARGP_NAMESTRING;
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break;
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case AML_CLASS_UNKNOWN:
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/* The opcode is unrecognized. Just skip unknown opcodes */
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ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
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"Found unknown opcode %X at AML address %p offset %X, ignoring\n",
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walk_state->opcode,
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parser_state->aml,
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walk_state->aml_offset));
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ACPI_DUMP_BUFFER(parser_state->aml, 128);
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/* Assume one-byte bad opcode */
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parser_state->aml++;
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continue;
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default:
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/* Found opcode info, this is a normal opcode */
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parser_state->aml +=
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acpi_ps_get_opcode_size(walk_state->opcode);
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walk_state->arg_types =
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walk_state->op_info->parse_args;
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break;
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}
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/* Create Op structure and append to parent's argument list */
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if (walk_state->op_info->flags & AML_NAMED) {
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/* Allocate a new pre_op if necessary */
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if (!pre_op) {
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pre_op =
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acpi_ps_alloc_op(walk_state->
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opcode);
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if (!pre_op) {
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status = AE_NO_MEMORY;
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goto close_this_op;
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}
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}
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pre_op->common.value.arg = NULL;
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pre_op->common.aml_opcode = walk_state->opcode;
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/*
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* Get and append arguments until we find the node that contains
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* the name (the type ARGP_NAME).
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*/
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while (GET_CURRENT_ARG_TYPE
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(walk_state->arg_types)
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&&
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(GET_CURRENT_ARG_TYPE
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(walk_state->arg_types) != ARGP_NAME)) {
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status =
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acpi_ps_get_next_arg(walk_state,
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parser_state,
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GET_CURRENT_ARG_TYPE
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(walk_state->
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arg_types),
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&arg);
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if (ACPI_FAILURE(status)) {
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goto close_this_op;
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}
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acpi_ps_append_arg(pre_op, arg);
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INCREMENT_ARG_LIST(walk_state->
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arg_types);
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}
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/*
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* Make sure that we found a NAME and didn't run out of
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* arguments
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*/
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if (!GET_CURRENT_ARG_TYPE
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(walk_state->arg_types)) {
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status = AE_AML_NO_OPERAND;
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goto close_this_op;
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}
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/* We know that this arg is a name, move to next arg */
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INCREMENT_ARG_LIST(walk_state->arg_types);
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/*
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* Find the object. This will either insert the object into
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* the namespace or simply look it up
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*/
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walk_state->op = NULL;
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status =
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walk_state->descending_callback(walk_state,
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&op);
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if (ACPI_FAILURE(status)) {
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ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
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"During name lookup/catalog, %s\n",
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acpi_format_exception
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(status)));
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goto close_this_op;
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}
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if (!op) {
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continue;
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}
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status =
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acpi_ps_next_parse_state(walk_state, op,
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status);
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if (status == AE_CTRL_PENDING) {
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status = AE_OK;
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goto close_this_op;
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}
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if (ACPI_FAILURE(status)) {
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goto close_this_op;
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}
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acpi_ps_append_arg(op,
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pre_op->common.value.arg);
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acpi_gbl_depth++;
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if (op->common.aml_opcode == AML_REGION_OP) {
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/*
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* Defer final parsing of an operation_region body,
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* because we don't have enough info in the first pass
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* to parse it correctly (i.e., there may be method
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* calls within the term_arg elements of the body.)
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*
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* However, we must continue parsing because
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* the opregion is not a standalone package --
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* we don't know where the end is at this point.
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*
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* (Length is unknown until parse of the body complete)
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*/
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op->named.data = aml_op_start;
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op->named.length = 0;
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}
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} else {
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/* Not a named opcode, just allocate Op and append to parent */
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walk_state->op_info =
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acpi_ps_get_opcode_info(walk_state->opcode);
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op = acpi_ps_alloc_op(walk_state->opcode);
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if (!op) {
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status = AE_NO_MEMORY;
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goto close_this_op;
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}
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if (walk_state->op_info->flags & AML_CREATE) {
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/*
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* Backup to beginning of create_xXXfield declaration
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* body_length is unknown until we parse the body
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*/
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op->named.data = aml_op_start;
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op->named.length = 0;
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}
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acpi_ps_append_arg(acpi_ps_get_parent_scope
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(parser_state), op);
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if ((walk_state->descending_callback != NULL)) {
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/*
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* Find the object. This will either insert the object into
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* the namespace or simply look it up
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*/
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walk_state->op = op;
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status =
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walk_state->
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descending_callback(walk_state,
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&op);
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status =
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acpi_ps_next_parse_state(walk_state,
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op,
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status);
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if (status == AE_CTRL_PENDING) {
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status = AE_OK;
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goto close_this_op;
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}
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if (ACPI_FAILURE(status)) {
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goto close_this_op;
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}
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}
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}
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op->common.aml_offset = walk_state->aml_offset;
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if (walk_state->op_info) {
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ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
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"Opcode %4.4X [%s] Op %p Aml %p aml_offset %5.5X\n",
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(u32) op->common.aml_opcode,
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walk_state->op_info->name, op,
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parser_state->aml,
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op->common.aml_offset));
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}
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}
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/*
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* Start arg_count at zero because we don't know if there are
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* any args yet
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*/
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walk_state->arg_count = 0;
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/* Are there any arguments that must be processed? */
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if (walk_state->arg_types) {
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/* Get arguments */
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switch (op->common.aml_opcode) {
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case AML_BYTE_OP: /* AML_BYTEDATA_ARG */
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case AML_WORD_OP: /* AML_WORDDATA_ARG */
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case AML_DWORD_OP: /* AML_DWORDATA_ARG */
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case AML_QWORD_OP: /* AML_QWORDATA_ARG */
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case AML_STRING_OP: /* AML_ASCIICHARLIST_ARG */
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/* Fill in constant or string argument directly */
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acpi_ps_get_next_simple_arg(parser_state,
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GET_CURRENT_ARG_TYPE
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(walk_state->
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arg_types), op);
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break;
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case AML_INT_NAMEPATH_OP: /* AML_NAMESTRING_ARG */
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status =
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acpi_ps_get_next_namepath(walk_state,
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parser_state, op,
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1);
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if (ACPI_FAILURE(status)) {
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goto close_this_op;
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}
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walk_state->arg_types = 0;
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break;
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default:
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/*
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* Op is not a constant or string, append each argument
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* to the Op
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*/
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while (GET_CURRENT_ARG_TYPE
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(walk_state->arg_types)
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&& !walk_state->arg_count) {
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walk_state->aml_offset = (u32)
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ACPI_PTR_DIFF(parser_state->aml,
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parser_state->
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aml_start);
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status =
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acpi_ps_get_next_arg(walk_state,
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parser_state,
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GET_CURRENT_ARG_TYPE
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(walk_state->
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arg_types),
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&arg);
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if (ACPI_FAILURE(status)) {
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goto close_this_op;
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}
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if (arg) {
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arg->common.aml_offset =
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walk_state->aml_offset;
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acpi_ps_append_arg(op, arg);
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}
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INCREMENT_ARG_LIST(walk_state->
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arg_types);
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}
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/* Special processing for certain opcodes */
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/* TBD (remove): Temporary mechanism to disable this code if needed */
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#ifdef ACPI_ENABLE_MODULE_LEVEL_CODE
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if ((walk_state->pass_number <=
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ACPI_IMODE_LOAD_PASS1)
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&&
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((walk_state->
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parse_flags & ACPI_PARSE_DISASSEMBLE) ==
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0)) {
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/*
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* We want to skip If/Else/While constructs during Pass1
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* because we want to actually conditionally execute the
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* code during Pass2.
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*
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* Except for disassembly, where we always want to
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* walk the If/Else/While packages
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*/
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switch (op->common.aml_opcode) {
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case AML_IF_OP:
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case AML_ELSE_OP:
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case AML_WHILE_OP:
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ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
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"Pass1: Skipping an If/Else/While body\n"));
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/* Skip body of if/else/while in pass 1 */
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parser_state->aml =
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parser_state->pkg_end;
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walk_state->arg_count = 0;
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break;
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default:
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break;
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}
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}
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#endif
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switch (op->common.aml_opcode) {
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case AML_METHOD_OP:
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/*
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* Skip parsing of control method
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* because we don't have enough info in the first pass
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* to parse it correctly.
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*
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* Save the length and address of the body
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*/
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op->named.data = parser_state->aml;
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op->named.length =
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(u32) (parser_state->pkg_end -
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parser_state->aml);
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/* Skip body of method */
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parser_state->aml =
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parser_state->pkg_end;
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walk_state->arg_count = 0;
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break;
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case AML_BUFFER_OP:
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case AML_PACKAGE_OP:
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case AML_VAR_PACKAGE_OP:
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if ((op->common.parent) &&
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(op->common.parent->common.
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aml_opcode == AML_NAME_OP)
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&& (walk_state->pass_number <=
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ACPI_IMODE_LOAD_PASS2)) {
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/*
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* Skip parsing of Buffers and Packages
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* because we don't have enough info in the first pass
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* to parse them correctly.
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*/
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op->named.data = aml_op_start;
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op->named.length =
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(u32) (parser_state->
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pkg_end -
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aml_op_start);
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/* Skip body */
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parser_state->aml =
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parser_state->pkg_end;
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walk_state->arg_count = 0;
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}
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break;
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case AML_WHILE_OP:
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|
|
if (walk_state->control_state) {
|
|
walk_state->control_state->
|
|
control.package_end =
|
|
parser_state->pkg_end;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
|
|
/* No action for all other opcodes */
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Check for arguments that need to be processed */
|
|
|
|
if (walk_state->arg_count) {
|
|
/*
|
|
* There are arguments (complex ones), push Op and
|
|
* prepare for argument
|
|
*/
|
|
status = acpi_ps_push_scope(parser_state, op,
|
|
walk_state->arg_types,
|
|
walk_state->arg_count);
|
|
if (ACPI_FAILURE(status)) {
|
|
goto close_this_op;
|
|
}
|
|
op = NULL;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* All arguments have been processed -- Op is complete,
|
|
* prepare for next
|
|
*/
|
|
walk_state->op_info =
|
|
acpi_ps_get_opcode_info(op->common.aml_opcode);
|
|
if (walk_state->op_info->flags & AML_NAMED) {
|
|
if (acpi_gbl_depth) {
|
|
acpi_gbl_depth--;
|
|
}
|
|
|
|
if (op->common.aml_opcode == AML_REGION_OP) {
|
|
/*
|
|
* Skip parsing of control method or opregion body,
|
|
* because we don't have enough info in the first pass
|
|
* to parse them correctly.
|
|
*
|
|
* Completed parsing an op_region declaration, we now
|
|
* know the length.
|
|
*/
|
|
op->named.length =
|
|
(u32) (parser_state->aml - op->named.data);
|
|
}
|
|
}
|
|
|
|
if (walk_state->op_info->flags & AML_CREATE) {
|
|
/*
|
|
* Backup to beginning of create_xXXfield declaration (1 for
|
|
* Opcode)
|
|
*
|
|
* body_length is unknown until we parse the body
|
|
*/
|
|
op->named.length =
|
|
(u32) (parser_state->aml - op->named.data);
|
|
}
|
|
|
|
/* This op complete, notify the dispatcher */
|
|
|
|
if (walk_state->ascending_callback != NULL) {
|
|
walk_state->op = op;
|
|
walk_state->opcode = op->common.aml_opcode;
|
|
|
|
status = walk_state->ascending_callback(walk_state);
|
|
status =
|
|
acpi_ps_next_parse_state(walk_state, op, status);
|
|
if (status == AE_CTRL_PENDING) {
|
|
status = AE_OK;
|
|
goto close_this_op;
|
|
}
|
|
}
|
|
|
|
close_this_op:
|
|
/*
|
|
* Finished one argument of the containing scope
|
|
*/
|
|
parser_state->scope->parse_scope.arg_count--;
|
|
|
|
/* Finished with pre_op */
|
|
|
|
if (pre_op) {
|
|
acpi_ps_free_op(pre_op);
|
|
pre_op = NULL;
|
|
}
|
|
|
|
/* Close this Op (will result in parse subtree deletion) */
|
|
|
|
status2 = acpi_ps_complete_this_op(walk_state, op);
|
|
if (ACPI_FAILURE(status2)) {
|
|
return_ACPI_STATUS(status2);
|
|
}
|
|
op = NULL;
|
|
|
|
switch (status) {
|
|
case AE_OK:
|
|
break;
|
|
|
|
case AE_CTRL_TRANSFER:
|
|
|
|
/* We are about to transfer to a called method. */
|
|
|
|
walk_state->prev_op = op;
|
|
walk_state->prev_arg_types = walk_state->arg_types;
|
|
return_ACPI_STATUS(status);
|
|
|
|
case AE_CTRL_END:
|
|
|
|
acpi_ps_pop_scope(parser_state, &op,
|
|
&walk_state->arg_types,
|
|
&walk_state->arg_count);
|
|
|
|
if (op) {
|
|
walk_state->op = op;
|
|
walk_state->op_info =
|
|
acpi_ps_get_opcode_info(op->common.
|
|
aml_opcode);
|
|
walk_state->opcode = op->common.aml_opcode;
|
|
|
|
status =
|
|
walk_state->ascending_callback(walk_state);
|
|
status =
|
|
acpi_ps_next_parse_state(walk_state, op,
|
|
status);
|
|
|
|
status2 =
|
|
acpi_ps_complete_this_op(walk_state, op);
|
|
if (ACPI_FAILURE(status2)) {
|
|
return_ACPI_STATUS(status2);
|
|
}
|
|
op = NULL;
|
|
}
|
|
status = AE_OK;
|
|
break;
|
|
|
|
case AE_CTRL_BREAK:
|
|
case AE_CTRL_CONTINUE:
|
|
|
|
/* Pop off scopes until we find the While */
|
|
|
|
while (!op || (op->common.aml_opcode != AML_WHILE_OP)) {
|
|
acpi_ps_pop_scope(parser_state, &op,
|
|
&walk_state->arg_types,
|
|
&walk_state->arg_count);
|
|
}
|
|
|
|
/* Close this iteration of the While loop */
|
|
|
|
walk_state->op = op;
|
|
walk_state->op_info =
|
|
acpi_ps_get_opcode_info(op->common.aml_opcode);
|
|
walk_state->opcode = op->common.aml_opcode;
|
|
|
|
status = walk_state->ascending_callback(walk_state);
|
|
status =
|
|
acpi_ps_next_parse_state(walk_state, op, status);
|
|
|
|
status2 = acpi_ps_complete_this_op(walk_state, op);
|
|
if (ACPI_FAILURE(status2)) {
|
|
return_ACPI_STATUS(status2);
|
|
}
|
|
op = NULL;
|
|
|
|
status = AE_OK;
|
|
break;
|
|
|
|
case AE_CTRL_TERMINATE:
|
|
|
|
status = AE_OK;
|
|
|
|
/* Clean up */
|
|
do {
|
|
if (op) {
|
|
status2 =
|
|
acpi_ps_complete_this_op(walk_state,
|
|
op);
|
|
if (ACPI_FAILURE(status2)) {
|
|
return_ACPI_STATUS(status2);
|
|
}
|
|
}
|
|
acpi_ps_pop_scope(parser_state, &op,
|
|
&walk_state->arg_types,
|
|
&walk_state->arg_count);
|
|
|
|
} while (op);
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
default: /* All other non-AE_OK status */
|
|
|
|
do {
|
|
if (op) {
|
|
status2 =
|
|
acpi_ps_complete_this_op(walk_state,
|
|
op);
|
|
if (ACPI_FAILURE(status2)) {
|
|
return_ACPI_STATUS(status2);
|
|
}
|
|
}
|
|
acpi_ps_pop_scope(parser_state, &op,
|
|
&walk_state->arg_types,
|
|
&walk_state->arg_count);
|
|
|
|
} while (op);
|
|
|
|
/*
|
|
* TBD: Cleanup parse ops on error
|
|
*/
|
|
#if 0
|
|
if (op == NULL) {
|
|
acpi_ps_pop_scope(parser_state, &op,
|
|
&walk_state->arg_types,
|
|
&walk_state->arg_count);
|
|
}
|
|
#endif
|
|
walk_state->prev_op = op;
|
|
walk_state->prev_arg_types = walk_state->arg_types;
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* This scope complete? */
|
|
|
|
if (acpi_ps_has_completed_scope(parser_state)) {
|
|
acpi_ps_pop_scope(parser_state, &op,
|
|
&walk_state->arg_types,
|
|
&walk_state->arg_count);
|
|
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
|
|
"Popped scope, Op=%p\n", op));
|
|
} else {
|
|
op = NULL;
|
|
}
|
|
|
|
} /* while parser_state->Aml */
|
|
|
|
/*
|
|
* Complete the last Op (if not completed), and clear the scope stack.
|
|
* It is easily possible to end an AML "package" with an unbounded number
|
|
* of open scopes (such as when several ASL blocks are closed with
|
|
* sequential closing braces). We want to terminate each one cleanly.
|
|
*/
|
|
ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "AML package complete at Op %p\n",
|
|
op));
|
|
do {
|
|
if (op) {
|
|
if (walk_state->ascending_callback != NULL) {
|
|
walk_state->op = op;
|
|
walk_state->op_info =
|
|
acpi_ps_get_opcode_info(op->common.
|
|
aml_opcode);
|
|
walk_state->opcode = op->common.aml_opcode;
|
|
|
|
status =
|
|
walk_state->ascending_callback(walk_state);
|
|
status =
|
|
acpi_ps_next_parse_state(walk_state, op,
|
|
status);
|
|
if (status == AE_CTRL_PENDING) {
|
|
status = AE_OK;
|
|
goto close_this_op;
|
|
}
|
|
|
|
if (status == AE_CTRL_TERMINATE) {
|
|
status = AE_OK;
|
|
|
|
/* Clean up */
|
|
do {
|
|
if (op) {
|
|
status2 =
|
|
acpi_ps_complete_this_op
|
|
(walk_state, op);
|
|
if (ACPI_FAILURE
|
|
(status2)) {
|
|
return_ACPI_STATUS
|
|
(status2);
|
|
}
|
|
}
|
|
|
|
acpi_ps_pop_scope(parser_state,
|
|
&op,
|
|
&walk_state->
|
|
arg_types,
|
|
&walk_state->
|
|
arg_count);
|
|
|
|
} while (op);
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
else if (ACPI_FAILURE(status)) {
|
|
/* First error is most important */
|
|
|
|
(void)
|
|
acpi_ps_complete_this_op(walk_state,
|
|
op);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
|
|
status2 = acpi_ps_complete_this_op(walk_state, op);
|
|
if (ACPI_FAILURE(status2)) {
|
|
return_ACPI_STATUS(status2);
|
|
}
|
|
}
|
|
|
|
acpi_ps_pop_scope(parser_state, &op, &walk_state->arg_types,
|
|
&walk_state->arg_count);
|
|
|
|
} while (op);
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|