Quelle dswexec.c
Sprache: C
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name : dswexec - Dispatcher method execution callbacks ;
* dispatch to interpreter .
*
* Copyright ( C ) 2000 - 2025 , Intel Corp .
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acparser.h"
#include "amlcode.h"
#include "acdispat.h"
#include "acinterp.h"
#include "acnamesp.h"
#include "acdebug.h"
#ifdef ACPI_EXEC_APP
#include "aecommon.h"
#endif
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME("dswexec" )
/*
* Dispatch table for opcode classes
*/
static acpi_execute_op acpi_gbl_op_type_dispatch[] = {
acpi_ex_opcode_0A_0T_1R,
acpi_ex_opcode_1A_0T_0R,
acpi_ex_opcode_1A_0T_1R,
NULL, /* Was: acpi_ex_opcode_1A_0T_0R (Was for Load operator) */
acpi_ex_opcode_1A_1T_1R,
acpi_ex_opcode_2A_0T_0R,
acpi_ex_opcode_2A_0T_1R,
acpi_ex_opcode_2A_1T_1R,
acpi_ex_opcode_2A_2T_1R,
acpi_ex_opcode_3A_0T_0R,
acpi_ex_opcode_3A_1T_1R,
acpi_ex_opcode_6A_0T_1R
};
/*****************************************************************************
*
* FUNCTION : acpi_ds_get_predicate_value
*
* PARAMETERS : walk_state - Current state of the parse tree walk
* result_obj - if non - zero , pop result from result stack
*
* RETURN : Status
*
* DESCRIPTION : Get the result of a predicate evaluation
*
****************************************************************************/
acpi_status
acpi_ds_get_predicate_value(struct acpi_walk_state *walk_state,
union acpi_operand_object *result_obj)
{
acpi_status status = AE_OK;
union acpi_operand_object *obj_desc;
union acpi_operand_object *local_obj_desc = NULL;
ACPI_FUNCTION_TRACE_PTR(ds_get_predicate_value, walk_state);
walk_state->control_state->common.state = 0 ;
if (result_obj) {
status = acpi_ds_result_pop(&obj_desc, walk_state);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Could not get result from predicate evaluation" ));
return_ACPI_STATUS(status);
}
} else {
status = acpi_ds_create_operand(walk_state, walk_state->op, 0 );
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status =
acpi_ex_resolve_to_value(&walk_state->operands[0 ],
walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
obj_desc = walk_state->operands[0 ];
}
if (!obj_desc) {
ACPI_ERROR((AE_INFO,
"No predicate ObjDesc=%p State=%p" ,
obj_desc, walk_state));
return_ACPI_STATUS(AE_AML_NO_OPERAND);
}
/*
* Result of predicate evaluation must be an Integer
* object . Implicitly convert the argument if necessary .
*/
status = acpi_ex_convert_to_integer(obj_desc, &local_obj_desc,
ACPI_IMPLICIT_CONVERSION);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
if (local_obj_desc->common.type != ACPI_TYPE_INTEGER) {
ACPI_ERROR((AE_INFO,
"Bad predicate (not an integer) ObjDesc=%p State=%p Type=0x%X" ,
obj_desc, walk_state, obj_desc->common.type));
status = AE_AML_OPERAND_TYPE;
goto cleanup;
}
/* Truncate the predicate to 32-bits if necessary */
(void )acpi_ex_truncate_for32bit_table(local_obj_desc);
/*
* Save the result of the predicate evaluation on
* the control stack
*/
if (local_obj_desc->integer.value) {
walk_state->control_state->common.value = TRUE ;
} else {
/*
* Predicate is FALSE , we will just toss the
* rest of the package
*/
walk_state->control_state->common.value = FALSE ;
status = AE_CTRL_FALSE;
}
/* Predicate can be used for an implicit return value */
(void )acpi_ds_do_implicit_return(local_obj_desc, walk_state, TRUE );
cleanup:
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Completed a predicate eval=%X Op=%p\n" ,
walk_state->control_state->common.value,
walk_state->op));
/* Break to debugger to display result */
acpi_db_display_result_object(local_obj_desc, walk_state);
/*
* Delete the predicate result object ( we know that
* we don ' t need it anymore )
*/
if (local_obj_desc != obj_desc) {
acpi_ut_remove_reference(local_obj_desc);
}
acpi_ut_remove_reference(obj_desc);
walk_state->control_state->common.state = ACPI_CONTROL_NORMAL;
return_ACPI_STATUS(status);
}
/*****************************************************************************
*
* FUNCTION : acpi_ds_exec_begin_op
*
* PARAMETERS : walk_state - Current state of the parse tree walk
* out_op - Where to return op if a new one is created
*
* RETURN : Status
*
* DESCRIPTION : Descending callback used during the execution of control
* methods . This is where most operators and operands are
* dispatched to the interpreter .
*
****************************************************************************/
acpi_status
acpi_ds_exec_begin_op(struct acpi_walk_state *walk_state,
union acpi_parse_object **out_op)
{
union acpi_parse_object *op;
acpi_status status = AE_OK;
u32 opcode_class;
ACPI_FUNCTION_TRACE_PTR(ds_exec_begin_op, walk_state);
op = walk_state->op;
if (!op) {
status = acpi_ds_load2_begin_op(walk_state, out_op);
if (ACPI_FAILURE(status)) {
goto error_exit;
}
op = *out_op;
walk_state->op = op;
walk_state->opcode = op->common.aml_opcode;
walk_state->op_info =
acpi_ps_get_opcode_info(op->common.aml_opcode);
if (acpi_ns_opens_scope(walk_state->op_info->object_type)) {
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"(%s) Popping scope for Op %p\n" ,
acpi_ut_get_type_name(walk_state->
op_info->
object_type),
op));
status = acpi_ds_scope_stack_pop(walk_state);
if (ACPI_FAILURE(status)) {
goto error_exit;
}
}
}
if (op == walk_state->origin) {
if (out_op) {
*out_op = op;
}
return_ACPI_STATUS(AE_OK);
}
/*
* If the previous opcode was a conditional , this opcode
* must be the beginning of the associated predicate .
* Save this knowledge in the current scope descriptor
*/
if ((walk_state->control_state) &&
(walk_state->control_state->common.state ==
ACPI_CONTROL_CONDITIONAL_EXECUTING)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Exec predicate Op=%p State=%p\n" ,
op, walk_state));
walk_state->control_state->common.state =
ACPI_CONTROL_PREDICATE_EXECUTING;
/* Save start of predicate */
walk_state->control_state->control.predicate_op = op;
}
opcode_class = walk_state->op_info->class ;
/* We want to send namepaths to the load code */
if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) {
opcode_class = AML_CLASS_NAMED_OBJECT;
}
/*
* Handle the opcode based upon the opcode type
*/
switch (opcode_class) {
case AML_CLASS_CONTROL:
status = acpi_ds_exec_begin_control_op(walk_state, op);
break ;
case AML_CLASS_NAMED_OBJECT:
if (walk_state->walk_type & ACPI_WALK_METHOD) {
/*
* Found a named object declaration during method execution ;
* we must enter this object into the namespace . The created
* object is temporary and will be deleted upon completion of
* the execution of this method .
*
* Note 10 / 2010 : Except for the Scope ( ) op . This opcode does
* not actually create a new object , it refers to an existing
* object . However , for Scope ( ) , we want to indeed open a
* new scope .
*/
if (op->common.aml_opcode != AML_SCOPE_OP) {
status =
acpi_ds_load2_begin_op(walk_state, NULL);
} else {
status =
acpi_ds_scope_stack_push(op->named.node,
op->named.node->
type, walk_state);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
}
break ;
case AML_CLASS_EXECUTE:
case AML_CLASS_CREATE:
break ;
default :
break ;
}
/* Nothing to do here during method execution */
return_ACPI_STATUS(status);
error_exit:
status = acpi_ds_method_error(status, walk_state);
return_ACPI_STATUS(status);
}
/*****************************************************************************
*
* FUNCTION : acpi_ds_exec_end_op
*
* PARAMETERS : walk_state - Current state of the parse tree walk
*
* RETURN : Status
*
* DESCRIPTION : Ascending callback used during the execution of control
* methods . The only thing we really need to do here is to
* notice the beginning of IF , ELSE , and WHILE blocks .
*
****************************************************************************/
acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state)
{
union acpi_parse_object *op;
acpi_status status = AE_OK;
u32 op_type;
u32 op_class;
union acpi_parse_object *next_op;
union acpi_parse_object *first_arg;
#ifdef ACPI_EXEC_APP
char *namepath;
union acpi_operand_object *obj_desc;
#endif
ACPI_FUNCTION_TRACE_PTR(ds_exec_end_op, walk_state);
op = walk_state->op;
op_type = walk_state->op_info->type;
op_class = walk_state->op_info->class ;
if (op_class == AML_CLASS_UNKNOWN) {
ACPI_ERROR((AE_INFO, "Unknown opcode 0x%X" ,
op->common.aml_opcode));
return_ACPI_STATUS(AE_NOT_IMPLEMENTED);
}
first_arg = op->common.value.arg;
/* Init the walk state */
walk_state->num_operands = 0 ;
walk_state->operand_index = 0 ;
walk_state->return_desc = NULL;
walk_state->result_obj = NULL;
/* Call debugger for single step support (DEBUG build only) */
status = acpi_db_single_step(walk_state, op, op_class);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Decode the Opcode Class */
switch (op_class) {
case AML_CLASS_ARGUMENT: /* Constants, literals, etc. */
if (walk_state->opcode == AML_INT_NAMEPATH_OP) {
status = acpi_ds_evaluate_name_path(walk_state);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
}
break ;
case AML_CLASS_EXECUTE: /* Most operators with arguments */
/* Build resolved operand stack */
status = acpi_ds_create_operands(walk_state, first_arg);
if (ACPI_FAILURE(status)) {
goto cleanup;
}
/*
* All opcodes require operand resolution , with the only exceptions
* being the object_type and size_of operators as well as opcodes that
* take no arguments .
*/
if (!(walk_state->op_info->flags & AML_NO_OPERAND_RESOLVE) &&
(walk_state->op_info->flags & AML_HAS_ARGS)) {
/* Resolve all operands */
status = acpi_ex_resolve_operands(walk_state->opcode,
&(walk_state->
operands
[walk_state->
num_operands - 1 ]),
walk_state);
}
if (ACPI_SUCCESS(status)) {
/*
* Dispatch the request to the appropriate interpreter handler
* routine . There is one routine per opcode " type " based upon the
* number of opcode arguments and return type .
*/
status =
acpi_gbl_op_type_dispatch[op_type] (walk_state);
} else {
/*
* Treat constructs of the form " Store ( LocalX , LocalX ) " as noops when the
* Local is uninitialized .
*/
if ((status == AE_AML_UNINITIALIZED_LOCAL) &&
(walk_state->opcode == AML_STORE_OP) &&
(walk_state->operands[0 ]->common.type ==
ACPI_TYPE_LOCAL_REFERENCE)
&& (walk_state->operands[1 ]->common.type ==
ACPI_TYPE_LOCAL_REFERENCE)
&& (walk_state->operands[0 ]->reference.class ==
walk_state->operands[1 ]->reference.class )
&& (walk_state->operands[0 ]->reference.value ==
walk_state->operands[1 ]->reference.value)) {
status = AE_OK;
} else {
ACPI_EXCEPTION((AE_INFO, status,
"While resolving operands for [%s]" ,
acpi_ps_get_opcode_name
(walk_state->opcode)));
}
}
/* Always delete the argument objects and clear the operand stack */
acpi_ds_clear_operands(walk_state);
/*
* If a result object was returned from above , push it on the
* current result stack
*/
if (ACPI_SUCCESS(status) && walk_state->result_obj) {
status =
acpi_ds_result_push(walk_state->result_obj,
walk_state);
}
break ;
default :
switch (op_type) {
case AML_TYPE_CONTROL: /* Type 1 opcode, IF/ELSE/WHILE/NOOP */
/* 1 Operand, 0 external_result, 0 internal_result */
status = acpi_ds_exec_end_control_op(walk_state, op);
break ;
case AML_TYPE_METHOD_CALL:
/*
* If the method is referenced from within a package
* declaration , it is not a invocation of the method , just
* a reference to it .
*/
if ((op->asl.parent) &&
((op->asl.parent->asl.aml_opcode == AML_PACKAGE_OP)
|| (op->asl.parent->asl.aml_opcode ==
AML_VARIABLE_PACKAGE_OP))) {
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"Method Reference in a Package, Op=%p\n" ,
op));
op->common.node = (struct acpi_namespace_node *)
op->asl.value.arg->asl.node;
acpi_ut_add_reference(op->asl.value.arg->asl.
node->object);
return_ACPI_STATUS(AE_OK);
}
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"Method invocation, Op=%p\n" , op));
/*
* ( AML_METHODCALL ) Op - > Asl . Value . Arg - > Asl . Node contains
* the method Node pointer
*/
/* next_op points to the op that holds the method name */
next_op = first_arg;
/* next_op points to first argument op */
next_op = next_op->common.next;
/*
* Get the method ' s arguments and put them on the operand stack
*/
status = acpi_ds_create_operands(walk_state, next_op);
if (ACPI_FAILURE(status)) {
break ;
}
/*
* Since the operands will be passed to another control method ,
* we must resolve all local references here ( Local variables ,
* arguments to * this * method , etc . )
*/
status = acpi_ds_resolve_operands(walk_state);
if (ACPI_FAILURE(status)) {
/* On error, clear all resolved operands */
acpi_ds_clear_operands(walk_state);
break ;
}
/*
* Tell the walk loop to preempt this running method and
* execute the new method
*/
status = AE_CTRL_TRANSFER;
/*
* Return now ; we don ' t want to disturb anything ,
* especially the operand count !
*/
return_ACPI_STATUS(status);
case AML_TYPE_CREATE_FIELD:
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Executing CreateField Buffer/Index Op=%p\n" ,
op));
status = acpi_ds_load2_end_op(walk_state);
if (ACPI_FAILURE(status)) {
break ;
}
status =
acpi_ds_eval_buffer_field_operands(walk_state, op);
if (ACPI_FAILURE(status)) {
break ;
}
#ifdef ACPI_EXEC_APP
/*
* acpi_exec support for namespace initialization file ( initialize
* buffer_fields in this code . )
*/
namepath =
acpi_ns_get_external_pathname(op->common.node);
status = ae_lookup_init_file_entry(namepath, &obj_desc);
if (ACPI_SUCCESS(status)) {
status =
acpi_ex_write_data_to_field(obj_desc,
op->common.
node->object,
NULL);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"While writing to buffer field" ));
}
}
ACPI_FREE(namepath);
status = AE_OK;
#endif
break ;
case AML_TYPE_CREATE_OBJECT:
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Executing CreateObject (Buffer/Package) Op=%p Child=%p ParentOpcode=%4.4X\n" ,
op, op->named.value.arg,
op->common.parent->common.
aml_opcode));
switch (op->common.parent->common.aml_opcode) {
case AML_NAME_OP:
/*
* Put the Node on the object stack ( Contains the ACPI Name
* of this object )
*/
walk_state->operands[0 ] = (void *)
op->common.parent->common.node;
walk_state->num_operands = 1 ;
status = acpi_ds_create_node(walk_state,
op->common.parent->
common.node,
op->common.parent);
if (ACPI_FAILURE(status)) {
break ;
}
ACPI_FALLTHROUGH;
case AML_INT_EVAL_SUBTREE_OP:
status =
acpi_ds_eval_data_object_operands
(walk_state, op,
acpi_ns_get_attached_object(op->common.
parent->common.
node));
break ;
default :
status =
acpi_ds_eval_data_object_operands
(walk_state, op, NULL);
break ;
}
/*
* If a result object was returned from above , push it on the
* current result stack
*/
if (walk_state->result_obj) {
status =
acpi_ds_result_push(walk_state->result_obj,
walk_state);
}
break ;
case AML_TYPE_NAMED_FIELD:
case AML_TYPE_NAMED_COMPLEX:
case AML_TYPE_NAMED_SIMPLE:
case AML_TYPE_NAMED_NO_OBJ:
status = acpi_ds_load2_end_op(walk_state);
if (ACPI_FAILURE(status)) {
break ;
}
if (op->common.aml_opcode == AML_REGION_OP) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Executing OpRegion Address/Length Op=%p\n" ,
op));
status =
acpi_ds_eval_region_operands(walk_state,
op);
if (ACPI_FAILURE(status)) {
break ;
}
} else if (op->common.aml_opcode == AML_DATA_REGION_OP) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Executing DataTableRegion Strings Op=%p\n" ,
op));
status =
acpi_ds_eval_table_region_operands
(walk_state, op);
if (ACPI_FAILURE(status)) {
break ;
}
} else if (op->common.aml_opcode == AML_BANK_FIELD_OP) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Executing BankField Op=%p\n" ,
op));
status =
acpi_ds_eval_bank_field_operands(walk_state,
op);
if (ACPI_FAILURE(status)) {
break ;
}
}
break ;
case AML_TYPE_UNDEFINED:
ACPI_ERROR((AE_INFO,
"Undefined opcode type Op=%p" , op));
return_ACPI_STATUS(AE_NOT_IMPLEMENTED);
case AML_TYPE_BOGUS:
ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
"Internal opcode=%X type Op=%p\n" ,
walk_state->opcode, op));
break ;
default :
ACPI_ERROR((AE_INFO,
"Unimplemented opcode, class=0x%X "
"type=0x%X Opcode=0x%X Op=%p" ,
op_class, op_type, op->common.aml_opcode,
op));
status = AE_NOT_IMPLEMENTED;
break ;
}
}
/*
* ACPI 2 . 0 support for 64 - bit integers : Truncate numeric
* result value if we are executing from a 32 - bit ACPI table
*/
(void )acpi_ex_truncate_for32bit_table(walk_state->result_obj);
/*
* Check if we just completed the evaluation of a
* conditional predicate
*/
if ((ACPI_SUCCESS(status)) &&
(walk_state->control_state) &&
(walk_state->control_state->common.state ==
ACPI_CONTROL_PREDICATE_EXECUTING) &&
(walk_state->control_state->control.predicate_op == op)) {
status =
acpi_ds_get_predicate_value(walk_state,
walk_state->result_obj);
walk_state->result_obj = NULL;
}
cleanup:
if (walk_state->result_obj) {
/* Break to debugger to display result */
acpi_db_display_result_object(walk_state->result_obj,
walk_state);
/*
* Delete the result op if and only if :
* Parent will not use the result - - such as any
* non - nested type2 op in a method ( parent will be method )
*/
acpi_ds_delete_result_if_not_used(op, walk_state->result_obj,
walk_state);
}
#ifdef _UNDER_DEVELOPMENT
if (walk_state->parser_state.aml == walk_state->parser_state.aml_end) {
acpi_db_method_end(walk_state);
}
#endif
/* Invoke exception handler on error */
if (ACPI_FAILURE(status)) {
status = acpi_ds_method_error(status, walk_state);
}
/* Always clear the object stack */
walk_state->num_operands = 0 ;
return_ACPI_STATUS(status);
}
Messung V0.5 in Prozent C=94 H=92 G=92
¤ Dauer der Verarbeitung: 0.11 Sekunden
¤
*© Formatika GbR, Deutschland
2026-10-11
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