acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info) { acpi_status status; union acpi_parse_object *op; struct acpi_walk_state *walk_state; ACPI_FUNCTION_TRACE(ps_execute_method); if (!info || !info->resolved_node) { return_ACPI_STATUS(AE_NULL_ENTRY); } status = acpi_ds_begin_method_execution(info->resolved_node, info->obj_desc, NULL); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } acpi_ps_update_parameter_list(info, REF_INCREMENT); acpi_ps_start_trace(info); ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n", info->resolved_node->name.ascii, info->resolved_node, info->obj_desc)); op = acpi_ps_create_scope_op(); if (!op) { status = AE_NO_MEMORY; goto cleanup; } info->pass_number = ACPI_IMODE_EXECUTE; walk_state = acpi_ds_create_walk_state(info->obj_desc->method.owner_id, NULL, NULL, NULL); if (!walk_state) { status = AE_NO_MEMORY; goto cleanup; } status = acpi_ds_init_aml_walk(walk_state, op, info->resolved_node, info->obj_desc->method.aml_start, info->obj_desc->method.aml_length, info, info->pass_number); if (ACPI_FAILURE(status)) { acpi_ds_delete_walk_state(walk_state); goto cleanup; } if (info->obj_desc->method.flags & AOPOBJ_MODULE_LEVEL) { walk_state->parse_flags |= ACPI_PARSE_MODULE_LEVEL; } if (info->obj_desc->method.method_flags & AML_METHOD_INTERNAL_ONLY) { status = info->obj_desc->method.implementation(walk_state); info->return_object = walk_state->return_desc; acpi_ds_scope_stack_clear(walk_state); acpi_ps_cleanup_scope(&walk_state->parser_state); acpi_ds_terminate_control_method(walk_state->method_desc, walk_state); acpi_ds_delete_walk_state(walk_state); goto cleanup; } if (acpi_gbl_enable_interpreter_slack) { walk_state->implicit_return_obj = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); if (!walk_state->implicit_return_obj) { status = AE_NO_MEMORY; acpi_ds_delete_walk_state(walk_state); goto cleanup; } walk_state->implicit_return_obj->integer.value = 0; } status = acpi_ps_parse_aml(walk_state); cleanup: acpi_ps_delete_parse_tree(op); acpi_ps_stop_trace(info); acpi_ps_update_parameter_list(info, REF_DECREMENT); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } if (info->return_object) { ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Method returned ObjDesc=%p\n", info->return_object)); ACPI_DUMP_STACK_ENTRY(info->return_object); status = AE_CTRL_RETURN_VALUE; } return_ACPI_STATUS(status); }
acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info) { acpi_status status; union acpi_parse_object *op; struct acpi_walk_state *walk_state; ACPI_FUNCTION_TRACE(ps_execute_method); /* Quick validation of DSDT header */ acpi_tb_check_dsdt_header(); /* Validate the Info and method Node */ if (!info || !info->resolved_node) { return_ACPI_STATUS(AE_NULL_ENTRY); } /* Init for new method, wait on concurrency semaphore */ status = acpi_ds_begin_method_execution(info->resolved_node, info->obj_desc, NULL); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } /* * The caller "owns" the parameters, so give each one an extra reference */ acpi_ps_update_parameter_list(info, REF_INCREMENT); /* Begin tracing if requested */ acpi_ps_start_trace(info); /* * Execute the method. Performs parse simultaneously */ ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n", info->resolved_node->name.ascii, info->resolved_node, info->obj_desc)); /* Create and init a Root Node */ op = acpi_ps_create_scope_op(); if (!op) { status = AE_NO_MEMORY; goto cleanup; } /* Create and initialize a new walk state */ info->pass_number = ACPI_IMODE_EXECUTE; walk_state = acpi_ds_create_walk_state(info->obj_desc->method.owner_id, NULL, NULL, NULL); if (!walk_state) { status = AE_NO_MEMORY; goto cleanup; } status = acpi_ds_init_aml_walk(walk_state, op, info->resolved_node, info->obj_desc->method.aml_start, info->obj_desc->method.aml_length, info, info->pass_number); if (ACPI_FAILURE(status)) { acpi_ds_delete_walk_state(walk_state); goto cleanup; } if (info->obj_desc->method.info_flags & ACPI_METHOD_MODULE_LEVEL) { walk_state->parse_flags |= ACPI_PARSE_MODULE_LEVEL; } /* Invoke an internal method if necessary */ if (info->obj_desc->method.info_flags & ACPI_METHOD_INTERNAL_ONLY) { status = info->obj_desc->method.dispatch.implementation(walk_state); info->return_object = walk_state->return_desc; /* Cleanup states */ acpi_ds_scope_stack_clear(walk_state); acpi_ps_cleanup_scope(&walk_state->parser_state); acpi_ds_terminate_control_method(walk_state->method_desc, walk_state); acpi_ds_delete_walk_state(walk_state); goto cleanup; } /* * Start method evaluation with an implicit return of zero. * This is done for Windows compatibility. */ if (acpi_gbl_enable_interpreter_slack) { walk_state->implicit_return_obj = acpi_ut_create_integer_object((u64) 0); if (!walk_state->implicit_return_obj) { status = AE_NO_MEMORY; acpi_ds_delete_walk_state(walk_state); goto cleanup; } } /* Parse the AML */ status = acpi_ps_parse_aml(walk_state); /* walk_state was deleted by parse_aml */ cleanup: acpi_ps_delete_parse_tree(op); /* End optional tracing */ acpi_ps_stop_trace(info); /* Take away the extra reference that we gave the parameters above */ acpi_ps_update_parameter_list(info, REF_DECREMENT); /* Exit now if error above */ if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } /* * If the method has returned an object, signal this to the caller with * a control exception code */ if (info->return_object) { ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Method returned ObjDesc=%p\n", info->return_object)); ACPI_DUMP_STACK_ENTRY(info->return_object); status = AE_CTRL_RETURN_VALUE; } return_ACPI_STATUS(status); }