diff options
Diffstat (limited to 'drivers/acpi/dispatcher/dsutils.c')
| -rw-r--r-- | drivers/acpi/dispatcher/dsutils.c | 868 |
1 files changed, 0 insertions, 868 deletions
diff --git a/drivers/acpi/dispatcher/dsutils.c b/drivers/acpi/dispatcher/dsutils.c deleted file mode 100644 index b398982f0d8b..000000000000 --- a/drivers/acpi/dispatcher/dsutils.c +++ /dev/null @@ -1,868 +0,0 @@ -/******************************************************************************* - * - * Module Name: dsutils - Dispatcher utilities - * - ******************************************************************************/ - -/* - * Copyright (C) 2000 - 2008, Intel Corp. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce at minimum a disclaimer - * substantially similar to the "NO WARRANTY" disclaimer below - * ("Disclaimer") and any redistribution must be conditioned upon - * including a substantially similar Disclaimer requirement for further - * binary redistribution. - * 3. Neither the names of the above-listed copyright holders nor the names - * of any contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2 as published by the Free - * Software Foundation. - * - * NO WARRANTY - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGES. - */ - -#include <acpi/acpi.h> -#include <acpi/acparser.h> -#include <acpi/amlcode.h> -#include <acpi/acdispat.h> -#include <acpi/acinterp.h> -#include <acpi/acnamesp.h> -#include <acpi/acdebug.h> - -#define _COMPONENT ACPI_DISPATCHER -ACPI_MODULE_NAME("dsutils") - -/******************************************************************************* - * - * FUNCTION: acpi_ds_clear_implicit_return - * - * PARAMETERS: walk_state - Current State - * - * RETURN: None. - * - * DESCRIPTION: Clear and remove a reference on an implicit return value. Used - * to delete "stale" return values (if enabled, the return value - * from every operator is saved at least momentarily, in case the - * parent method exits.) - * - ******************************************************************************/ -void acpi_ds_clear_implicit_return(struct acpi_walk_state *walk_state) -{ - ACPI_FUNCTION_NAME(ds_clear_implicit_return); - - /* - * Slack must be enabled for this feature - */ - if (!acpi_gbl_enable_interpreter_slack) { - return; - } - - if (walk_state->implicit_return_obj) { - /* - * Delete any "stale" implicit return. However, in - * complex statements, the implicit return value can be - * bubbled up several levels. - */ - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, - "Removing reference on stale implicit return obj %p\n", - walk_state->implicit_return_obj)); - - acpi_ut_remove_reference(walk_state->implicit_return_obj); - walk_state->implicit_return_obj = NULL; - } -} - -#ifndef ACPI_NO_METHOD_EXECUTION -/******************************************************************************* - * - * FUNCTION: acpi_ds_do_implicit_return - * - * PARAMETERS: return_desc - The return value - * walk_state - Current State - * add_reference - True if a reference should be added to the - * return object - * - * RETURN: TRUE if implicit return enabled, FALSE otherwise - * - * DESCRIPTION: Implements the optional "implicit return". We save the result - * of every ASL operator and control method invocation in case the - * parent method exit. Before storing a new return value, we - * delete the previous return value. - * - ******************************************************************************/ - -u8 -acpi_ds_do_implicit_return(union acpi_operand_object *return_desc, - struct acpi_walk_state *walk_state, u8 add_reference) -{ - ACPI_FUNCTION_NAME(ds_do_implicit_return); - - /* - * Slack must be enabled for this feature, and we must - * have a valid return object - */ - if ((!acpi_gbl_enable_interpreter_slack) || (!return_desc)) { - return (FALSE); - } - - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, - "Result %p will be implicitly returned; Prev=%p\n", - return_desc, walk_state->implicit_return_obj)); - - /* - * Delete any "stale" implicit return value first. However, in - * complex statements, the implicit return value can be - * bubbled up several levels, so we don't clear the value if it - * is the same as the return_desc. - */ - if (walk_state->implicit_return_obj) { - if (walk_state->implicit_return_obj == return_desc) { - return (TRUE); - } - acpi_ds_clear_implicit_return(walk_state); - } - - /* Save the implicit return value, add a reference if requested */ - - walk_state->implicit_return_obj = return_desc; - if (add_reference) { - acpi_ut_add_reference(return_desc); - } - - return (TRUE); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ds_is_result_used - * - * PARAMETERS: Op - Current Op - * walk_state - Current State - * - * RETURN: TRUE if result is used, FALSE otherwise - * - * DESCRIPTION: Check if a result object will be used by the parent - * - ******************************************************************************/ - -u8 -acpi_ds_is_result_used(union acpi_parse_object * op, - struct acpi_walk_state * walk_state) -{ - const struct acpi_opcode_info *parent_info; - - ACPI_FUNCTION_TRACE_PTR(ds_is_result_used, op); - - /* Must have both an Op and a Result Object */ - - if (!op) { - ACPI_ERROR((AE_INFO, "Null Op")); - return_UINT8(TRUE); - } - - /* - * We know that this operator is not a - * Return() operator (would not come here.) The following code is the - * optional support for a so-called "implicit return". Some AML code - * assumes that the last value of the method is "implicitly" returned - * to the caller. Just save the last result as the return value. - * NOTE: this is optional because the ASL language does not actually - * support this behavior. - */ - (void)acpi_ds_do_implicit_return(walk_state->result_obj, walk_state, - TRUE); - - /* - * Now determine if the parent will use the result - * - * If there is no parent, or the parent is a scope_op, we are executing - * at the method level. An executing method typically has no parent, - * since each method is parsed separately. A method invoked externally - * via execute_control_method has a scope_op as the parent. - */ - if ((!op->common.parent) || - (op->common.parent->common.aml_opcode == AML_SCOPE_OP)) { - - /* No parent, the return value cannot possibly be used */ - - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, - "At Method level, result of [%s] not used\n", - acpi_ps_get_opcode_name(op->common. - aml_opcode))); - return_UINT8(FALSE); - } - - /* Get info on the parent. The root_op is AML_SCOPE */ - - parent_info = - acpi_ps_get_opcode_info(op->common.parent->common.aml_opcode); - if (parent_info->class == AML_CLASS_UNKNOWN) { - ACPI_ERROR((AE_INFO, "Unknown parent opcode Op=%p", op)); - return_UINT8(FALSE); - } - - /* - * Decide what to do with the result based on the parent. If - * the parent opcode will not use the result, delete the object. - * Otherwise leave it as is, it will be deleted when it is used - * as an operand later. - */ - switch (parent_info->class) { - case AML_CLASS_CONTROL: - - switch (op->common.parent->common.aml_opcode) { - case AML_RETURN_OP: - - /* Never delete the return value associated with a return opcode */ - - goto result_used; - - case AML_IF_OP: - case AML_WHILE_OP: - - /* - * If we are executing the predicate AND this is the predicate op, - * we will use the return value - */ - if ((walk_state->control_state->common.state == - ACPI_CONTROL_PREDICATE_EXECUTING) - && (walk_state->control_state->control. - predicate_op == op)) { - goto result_used; - } - break; - - default: - /* Ignore other control opcodes */ - break; - } - - /* The general control opcode returns no result */ - - goto result_not_used; - - case AML_CLASS_CREATE: - - /* - * These opcodes allow term_arg(s) as operands and therefore - * the operands can be method calls. The result is used. - */ - goto result_used; - - case AML_CLASS_NAMED_OBJECT: - - if ((op->common.parent->common.aml_opcode == AML_REGION_OP) || - (op->common.parent->common.aml_opcode == AML_DATA_REGION_OP) - || (op->common.parent->common.aml_opcode == AML_PACKAGE_OP) - || (op->common.parent->common.aml_opcode == - AML_VAR_PACKAGE_OP) - || (op->common.parent->common.aml_opcode == AML_BUFFER_OP) - || (op->common.parent->common.aml_opcode == - AML_INT_EVAL_SUBTREE_OP) - || (op->common.parent->common.aml_opcode == - AML_BANK_FIELD_OP)) { - /* - * These opcodes allow term_arg(s) as operands and therefore - * the operands can be method calls. The result is used. - */ - goto result_used; - } - - goto result_not_used; - - default: - - /* - * In all other cases. the parent will actually use the return - * object, so keep it. - */ - goto result_used; - } - - result_used: - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, - "Result of [%s] used by Parent [%s] Op=%p\n", - acpi_ps_get_opcode_name(op->common.aml_opcode), - acpi_ps_get_opcode_name(op->common.parent->common. - aml_opcode), op)); - - return_UINT8(TRUE); - - result_not_used: - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, - "Result of [%s] not used by Parent [%s] Op=%p\n", - acpi_ps_get_opcode_name(op->common.aml_opcode), - acpi_ps_get_opcode_name(op->common.parent->common. - aml_opcode), op)); - - return_UINT8(FALSE); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ds_delete_result_if_not_used - * - * PARAMETERS: Op - Current parse Op - * result_obj - Result of the operation - * walk_state - Current state - * - * RETURN: Status - * - * DESCRIPTION: Used after interpretation of an opcode. If there is an internal - * result descriptor, check if the parent opcode will actually use - * this result. If not, delete the result now so that it will - * not become orphaned. - * - ******************************************************************************/ - -void -acpi_ds_delete_result_if_not_used(union acpi_parse_object *op, - union acpi_operand_object *result_obj, - struct acpi_walk_state *walk_state) -{ - union acpi_operand_object *obj_desc; - acpi_status status; - - ACPI_FUNCTION_TRACE_PTR(ds_delete_result_if_not_used, result_obj); - - if (!op) { - ACPI_ERROR((AE_INFO, "Null Op")); - return_VOID; - } - - if (!result_obj) { - return_VOID; - } - - if (!acpi_ds_is_result_used(op, walk_state)) { - - /* Must pop the result stack (obj_desc should be equal to result_obj) */ - - status = acpi_ds_result_pop(&obj_desc, walk_state); - if (ACPI_SUCCESS(status)) { - acpi_ut_remove_reference(result_obj); - } - } - - return_VOID; -} - -/******************************************************************************* - * - * FUNCTION: acpi_ds_resolve_operands - * - * PARAMETERS: walk_state - Current walk state with operands on stack - * - * RETURN: Status - * - * DESCRIPTION: Resolve all operands to their values. Used to prepare - * arguments to a control method invocation (a call from one - * method to another.) - * - ******************************************************************************/ - -acpi_status acpi_ds_resolve_operands(struct acpi_walk_state *walk_state) -{ - u32 i; - acpi_status status = AE_OK; - - ACPI_FUNCTION_TRACE_PTR(ds_resolve_operands, walk_state); - - /* - * Attempt to resolve each of the valid operands - * Method arguments are passed by reference, not by value. This means - * that the actual objects are passed, not copies of the objects. - */ - for (i = 0; i < walk_state->num_operands; i++) { - status = - acpi_ex_resolve_to_value(&walk_state->operands[i], - walk_state); - if (ACPI_FAILURE(status)) { - break; - } - } - - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ds_clear_operands - * - * PARAMETERS: walk_state - Current walk state with operands on stack - * - * RETURN: None - * - * DESCRIPTION: Clear all operands on the current walk state operand stack. - * - ******************************************************************************/ - -void acpi_ds_clear_operands(struct acpi_walk_state *walk_state) -{ - u32 i; - - ACPI_FUNCTION_TRACE_PTR(ds_clear_operands, walk_state); - - /* Remove a reference on each operand on the stack */ - - for (i = 0; i < walk_state->num_operands; i++) { - /* - * Remove a reference to all operands, including both - * "Arguments" and "Targets". - */ - acpi_ut_remove_reference(walk_state->operands[i]); - walk_state->operands[i] = NULL; - } - - walk_state->num_operands = 0; - return_VOID; -} -#endif - -/******************************************************************************* - * - * FUNCTION: acpi_ds_create_operand - * - * PARAMETERS: walk_state - Current walk state - * Arg - Parse object for the argument - * arg_index - Which argument (zero based) - * - * RETURN: Status - * - * DESCRIPTION: Translate a parse tree object that is an argument to an AML - * opcode to the equivalent interpreter object. This may include - * looking up a name or entering a new name into the internal - * namespace. - * - ******************************************************************************/ - -acpi_status -acpi_ds_create_operand(struct acpi_walk_state *walk_state, - union acpi_parse_object *arg, u32 arg_index) -{ - acpi_status status = AE_OK; - char *name_string; - u32 name_length; - union acpi_operand_object *obj_desc; - union acpi_parse_object *parent_op; - u16 opcode; - acpi_interpreter_mode interpreter_mode; - const struct acpi_opcode_info *op_info; - - ACPI_FUNCTION_TRACE_PTR(ds_create_operand, arg); - - /* A valid name must be looked up in the namespace */ - - if ((arg->common.aml_opcode == AML_INT_NAMEPATH_OP) && - (arg->common.value.string) && - !(arg->common.flags & ACPI_PARSEOP_IN_STACK)) { - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Getting a name: Arg=%p\n", - arg)); - - /* Get the entire name string from the AML stream */ - - status = - acpi_ex_get_name_string(ACPI_TYPE_ANY, - arg->common.value.buffer, - &name_string, &name_length); - - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* All prefixes have been handled, and the name is in name_string */ - - /* - * Special handling for buffer_field declarations. This is a deferred - * opcode that unfortunately defines the field name as the last - * parameter instead of the first. We get here when we are performing - * the deferred execution, so the actual name of the field is already - * in the namespace. We don't want to attempt to look it up again - * because we may be executing in a different scope than where the - * actual opcode exists. - */ - if ((walk_state->deferred_node) && - (walk_state->deferred_node->type == ACPI_TYPE_BUFFER_FIELD) - && (arg_index == - (u32) ((walk_state->opcode == - AML_CREATE_FIELD_OP) ? 3 : 2))) { - obj_desc = - ACPI_CAST_PTR(union acpi_operand_object, - walk_state->deferred_node); - status = AE_OK; - } else { /* All other opcodes */ - - /* - * Differentiate between a namespace "create" operation - * versus a "lookup" operation (IMODE_LOAD_PASS2 vs. - * IMODE_EXECUTE) in order to support the creation of - * namespace objects during the execution of control methods. - */ - parent_op = arg->common.parent; - op_info = - acpi_ps_get_opcode_info(parent_op->common. - aml_opcode); - if ((op_info->flags & AML_NSNODE) - && (parent_op->common.aml_opcode != - AML_INT_METHODCALL_OP) - && (parent_op->common.aml_opcode != AML_REGION_OP) - && (parent_op->common.aml_opcode != - AML_INT_NAMEPATH_OP)) { - - /* Enter name into namespace if not found */ - - interpreter_mode = ACPI_IMODE_LOAD_PASS2; - } else { - /* Return a failure if name not found */ - - interpreter_mode = ACPI_IMODE_EXECUTE; - } - - status = - acpi_ns_lookup(walk_state->scope_info, name_string, - ACPI_TYPE_ANY, interpreter_mode, - ACPI_NS_SEARCH_PARENT | - ACPI_NS_DONT_OPEN_SCOPE, walk_state, - ACPI_CAST_INDIRECT_PTR(struct - acpi_namespace_node, - &obj_desc)); - /* - * The only case where we pass through (ignore) a NOT_FOUND - * error is for the cond_ref_of opcode. - */ - if (status == AE_NOT_FOUND) { - if (parent_op->common.aml_opcode == - AML_COND_REF_OF_OP) { - /* - * For the Conditional Reference op, it's OK if - * the name is not found; We just need a way to - * indicate this to the interpreter, set the - * object to the root - */ - obj_desc = ACPI_CAST_PTR(union - acpi_operand_object, - acpi_gbl_root_node); - status = AE_OK; - } else { - /* - * We just plain didn't find it -- which is a - * very serious error at this point - */ - status = AE_AML_NAME_NOT_FOUND; - } - } - - if (ACPI_FAILURE(status)) { - ACPI_ERROR_NAMESPACE(name_string, status); - } - } - - /* Free the namestring created above */ - - ACPI_FREE(name_string); - - /* Check status from the lookup */ - - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Put the resulting object onto the current object stack */ - - status = acpi_ds_obj_stack_push(obj_desc, walk_state); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - ACPI_DEBUGGER_EXEC(acpi_db_display_argument_object - (obj_desc, walk_state)); - } else { - /* Check for null name case */ - - if ((arg->common.aml_opcode == AML_INT_NAMEPATH_OP) && - !(arg->common.flags & ACPI_PARSEOP_IN_STACK)) { - /* - * If the name is null, this means that this is an - * optional result parameter that was not specified - * in the original ASL. Create a Zero Constant for a - * placeholder. (Store to a constant is a Noop.) - */ - opcode = AML_ZERO_OP; /* Has no arguments! */ - - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, - "Null namepath: Arg=%p\n", arg)); - } else { - opcode = arg->common.aml_opcode; - } - - /* Get the object type of the argument */ - - op_info = acpi_ps_get_opcode_info(opcode); - if (op_info->object_type == ACPI_TYPE_INVALID) { - return_ACPI_STATUS(AE_NOT_IMPLEMENTED); - } - - if ((op_info->flags & AML_HAS_RETVAL) - || (arg->common.flags & ACPI_PARSEOP_IN_STACK)) { - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, - "Argument previously created, already stacked\n")); - - ACPI_DEBUGGER_EXEC(acpi_db_display_argument_object - (walk_state-> - operands[walk_state->num_operands - - 1], walk_state)); - - /* - * Use value that was already previously returned - * by the evaluation of this argument - */ - status = acpi_ds_result_pop(&obj_desc, walk_state); - if (ACPI_FAILURE(status)) { - /* - * Only error is underflow, and this indicates - * a missing or null operand! - */ - ACPI_EXCEPTION((AE_INFO, status, - "Missing or null operand")); - return_ACPI_STATUS(status); - } - } else { - /* Create an ACPI_INTERNAL_OBJECT for the argument */ - - obj_desc = - acpi_ut_create_internal_object(op_info-> - object_type); - if (!obj_desc) { - return_ACPI_STATUS(AE_NO_MEMORY); - } - - /* Initialize the new object */ - - status = - acpi_ds_init_object_from_op(walk_state, arg, opcode, - &obj_desc); - if (ACPI_FAILURE(status)) { - acpi_ut_delete_object_desc(obj_desc); - return_ACPI_STATUS(status); - } - } - - /* Put the operand object on the object stack */ - - status = acpi_ds_obj_stack_push(obj_desc, walk_state); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - ACPI_DEBUGGER_EXEC(acpi_db_display_argument_object - (obj_desc, walk_state)); - } - - return_ACPI_STATUS(AE_OK); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ds_create_operands - * - * PARAMETERS: walk_state - Current state - * first_arg - First argument of a parser argument tree - * - * RETURN: Status - * - * DESCRIPTION: Convert an operator's arguments from a parse tree format to - * namespace objects and place those argument object on the object - * stack in preparation for evaluation by the interpreter. - * - ******************************************************************************/ - -acpi_status -acpi_ds_create_operands(struct acpi_walk_state *walk_state, - union acpi_parse_object *first_arg) -{ - acpi_status status = AE_OK; - union acpi_parse_object *arg; - union acpi_parse_object *arguments[ACPI_OBJ_NUM_OPERANDS]; - u32 arg_count = 0; - u32 index = walk_state->num_operands; - u32 i; - - ACPI_FUNCTION_TRACE_PTR(ds_create_operands, first_arg); - - /* Get all arguments in the list */ - - arg = first_arg; - while (arg) { - if (index >= ACPI_OBJ_NUM_OPERANDS) { - return_ACPI_STATUS(AE_BAD_DATA); - } - - arguments[index] = arg; - walk_state->operands[index] = NULL; - - /* Move on to next argument, if any */ - - arg = arg->common.next; - arg_count++; - index++; - } - - index--; - - /* It is the appropriate order to get objects from the Result stack */ - - for (i = 0; i < arg_count; i++) { - arg = arguments[index]; - - /* Force the filling of the operand stack in inverse order */ - - walk_state->operand_index = (u8) index; - - status = acpi_ds_create_operand(walk_state, arg, index); - if (ACPI_FAILURE(status)) { - goto cleanup; - } - - index--; - - ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, - "Arg #%d (%p) done, Arg1=%p\n", index, arg, - first_arg)); - } - - return_ACPI_STATUS(status); - - cleanup: - /* - * We must undo everything done above; meaning that we must - * pop everything off of the operand stack and delete those - * objects - */ - acpi_ds_obj_stack_pop_and_delete(arg_count, walk_state); - - ACPI_EXCEPTION((AE_INFO, status, "While creating Arg %d", index)); - return_ACPI_STATUS(status); -} - -/***************************************************************************** - * - * FUNCTION: acpi_ds_evaluate_name_path - * - * PARAMETERS: walk_state - Current state of the parse tree walk, - * the opcode of current operation should be - * AML_INT_NAMEPATH_OP - * - * RETURN: Status - * - * DESCRIPTION: Translate the -name_path- parse tree object to the equivalent - * interpreter object, convert it to value, if needed, duplicate - * it, if needed, and push it onto the current result stack. - * - ****************************************************************************/ - -acpi_status acpi_ds_evaluate_name_path(struct acpi_walk_state *walk_state) -{ - acpi_status status = AE_OK; - union acpi_parse_object *op = walk_state->op; - union acpi_operand_object **operand = &walk_state->operands[0]; - union acpi_operand_object *new_obj_desc; - u8 type; - - ACPI_FUNCTION_TRACE_PTR(ds_evaluate_name_path, walk_state); - - if (!op->common.parent) { - - /* This happens after certain exception processing */ - - goto exit; - } - - if ((op->common.parent->common.aml_opcode == AML_PACKAGE_OP) || - (op->common.parent->common.aml_opcode == AML_VAR_PACKAGE_OP) || - (op->common.parent->common.aml_opcode == AML_REF_OF_OP)) { - - /* TBD: Should we specify this feature as a bit of op_info->Flags of these opcodes? */ - - goto exit; - } - - status = acpi_ds_create_operand(walk_state, op, 0); - if (ACPI_FAILURE(status)) { - goto exit; - } - - if (op->common.flags & ACPI_PARSEOP_TARGET) { - new_obj_desc = *operand; - goto push_result; - } - - type = ACPI_GET_OBJECT_TYPE(*operand); - - status = acpi_ex_resolve_to_value(operand, walk_state); - if (ACPI_FAILURE(status)) { - goto exit; - } - - if (type == ACPI_TYPE_INTEGER) { - - /* It was incremented by acpi_ex_resolve_to_value */ - - acpi_ut_remove_reference(*operand); - - status = - acpi_ut_copy_iobject_to_iobject(*operand, &new_obj_desc, - walk_state); - if (ACPI_FAILURE(status)) { - goto exit; - } - } else { - /* - * The object either was anew created or is - * a Namespace node - don't decrement it. - */ - new_obj_desc = *operand; - } - - /* Cleanup for name-path operand */ - - status = acpi_ds_obj_stack_pop(1, walk_state); - if (ACPI_FAILURE(status)) { - walk_state->result_obj = new_obj_desc; - goto exit; - } - - push_result: - - walk_state->result_obj = new_obj_desc; - - status = acpi_ds_result_push(walk_state->result_obj, walk_state); - if (ACPI_SUCCESS(status)) { - - /* Force to take it from stack */ - - op->common.flags |= ACPI_PARSEOP_IN_STACK; - } - - exit: - - return_ACPI_STATUS(status); -} |