dbmethod.c | Explore in Territory

// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
 *
 * Module Name: dbmethod - Debug commands for control methods
 *
 ******************************************************************************/

#include <acpi/acpi.h>
#include "accommon.h"
#include "acdispat.h"
#include "acnamesp.h"
#include "acdebug.h"
#include "acparser.h"
#include "acpredef.h"

#define _COMPONENT …
ACPI_MODULE_NAME("dbmethod")

/* Local prototypes */
static acpi_status
acpi_db_walk_for_execute(acpi_handle obj_handle,
			 u32 nesting_level, void *context, void **return_value);

static acpi_status acpi_db_evaluate_object(struct acpi_namespace_node *node);

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_set_method_breakpoint
 *
 * PARAMETERS:  location            - AML offset of breakpoint
 *              walk_state          - Current walk info
 *              op                  - Current Op (from parse walk)
 *
 * RETURN:      None
 *
 * DESCRIPTION: Set a breakpoint in a control method at the specified
 *              AML offset
 *
 ******************************************************************************/

void
acpi_db_set_method_breakpoint(char *location,
			      struct acpi_walk_state *walk_state,
			      union acpi_parse_object *op)
{ … }

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_set_method_call_breakpoint
 *
 * PARAMETERS:  op                  - Current Op (from parse walk)
 *
 * RETURN:      None
 *
 * DESCRIPTION: Set a breakpoint in a control method at the specified
 *              AML offset
 *
 ******************************************************************************/

void acpi_db_set_method_call_breakpoint(union acpi_parse_object *op)
{ … }

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_set_method_data
 *
 * PARAMETERS:  type_arg        - L for local, A for argument
 *              index_arg       - which one
 *              value_arg       - Value to set.
 *
 * RETURN:      None
 *
 * DESCRIPTION: Set a local or argument for the running control method.
 *              NOTE: only object supported is Number.
 *
 ******************************************************************************/

void acpi_db_set_method_data(char *type_arg, char *index_arg, char *value_arg)
{ … }

#ifdef ACPI_DISASSEMBLER
/*******************************************************************************
 *
 * FUNCTION:    acpi_db_disassemble_aml
 *
 * PARAMETERS:  statements          - Number of statements to disassemble
 *              op                  - Current Op (from parse walk)
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display disassembled AML (ASL) starting from Op for the number
 *              of statements specified.
 *
 ******************************************************************************/

void acpi_db_disassemble_aml(char *statements, union acpi_parse_object *op)
{
	u32 num_statements = 8;

	if (!op) {
		acpi_os_printf("There is no method currently executing\n");
		return;
	}

	if (statements) {
		num_statements = strtoul(statements, NULL, 0);
	}

	acpi_dm_disassemble(NULL, op, num_statements);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_disassemble_method
 *
 * PARAMETERS:  name            - Name of control method
 *
 * RETURN:      None
 *
 * DESCRIPTION: Display disassembled AML (ASL) starting from Op for the number
 *              of statements specified.
 *
 ******************************************************************************/

acpi_status acpi_db_disassemble_method(char *name)
{
	acpi_status status;
	union acpi_parse_object *op;
	struct acpi_walk_state *walk_state;
	union acpi_operand_object *obj_desc;
	struct acpi_namespace_node *method;

	method = acpi_db_convert_to_node(name);
	if (!method) {
		return (AE_BAD_PARAMETER);
	}

	if (method->type != ACPI_TYPE_METHOD) {
		ACPI_ERROR((AE_INFO, "%s (%s): Object must be a control method",
			    name, acpi_ut_get_type_name(method->type)));
		return (AE_BAD_PARAMETER);
	}

	obj_desc = method->object;

	op = acpi_ps_create_scope_op(obj_desc->method.aml_start);
	if (!op) {
		return (AE_NO_MEMORY);
	}

	/* Create and initialize a new walk state */

	walk_state = acpi_ds_create_walk_state(0, op, NULL, NULL);
	if (!walk_state) {
		return (AE_NO_MEMORY);
	}

	status = acpi_ds_init_aml_walk(walk_state, op, NULL,
				       obj_desc->method.aml_start,
				       obj_desc->method.aml_length, NULL,
				       ACPI_IMODE_LOAD_PASS1);
	if (ACPI_FAILURE(status)) {
		return (status);
	}

	status = acpi_ut_allocate_owner_id(&obj_desc->method.owner_id);
	if (ACPI_FAILURE(status)) {
		return (status);
	}

	walk_state->owner_id = obj_desc->method.owner_id;

	/* Push start scope on scope stack and make it current */

	status = acpi_ds_scope_stack_push(method, method->type, walk_state);
	if (ACPI_FAILURE(status)) {
		return (status);
	}

	/* Parse the entire method AML including deferred operators */

	walk_state->parse_flags &= ~ACPI_PARSE_DELETE_TREE;
	walk_state->parse_flags |= ACPI_PARSE_DISASSEMBLE;

	status = acpi_ps_parse_aml(walk_state);
	if (ACPI_FAILURE(status)) {
		return (status);
	}

	(void)acpi_dm_parse_deferred_ops(op);

	/* Now we can disassemble the method */

	acpi_gbl_dm_opt_verbose = FALSE;
	acpi_dm_disassemble(NULL, op, 0);
	acpi_gbl_dm_opt_verbose = TRUE;

	acpi_ps_delete_parse_tree(op);

	/* Method cleanup */

	acpi_ns_delete_namespace_subtree(method);
	acpi_ns_delete_namespace_by_owner(obj_desc->method.owner_id);
	acpi_ut_release_owner_id(&obj_desc->method.owner_id);
	return (AE_OK);
}
#endif

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_evaluate_object
 *
 * PARAMETERS:  node                - Namespace node for the object
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Main execution function for the Evaluate/Execute/All debugger
 *              commands.
 *
 ******************************************************************************/

static acpi_status acpi_db_evaluate_object(struct acpi_namespace_node *node)
{ … }

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_walk_for_execute
 *
 * PARAMETERS:  Callback from walk_namespace
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Batch execution function. Evaluates all "predefined" objects --
 *              the nameseg begins with an underscore.
 *
 ******************************************************************************/

static acpi_status
acpi_db_walk_for_execute(acpi_handle obj_handle,
			 u32 nesting_level, void *context, void **return_value)
{ … }

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_walk_for_execute_all
 *
 * PARAMETERS:  Callback from walk_namespace
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Batch execution function. Evaluates all objects whose path ends
 *              with the nameseg "Info->NameSeg". Used for the "ALL" command.
 *
 ******************************************************************************/

static acpi_status
acpi_db_walk_for_execute_all(acpi_handle obj_handle,
			     u32 nesting_level,
			     void *context, void **return_value)
{ … }

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_evaluate_predefined_names
 *
 * PARAMETERS:  None
 *
 * RETURN:      None
 *
 * DESCRIPTION: Namespace batch execution. Execute predefined names in the
 *              namespace, up to the max count, if specified.
 *
 ******************************************************************************/

void acpi_db_evaluate_predefined_names(void)
{ … }

/*******************************************************************************
 *
 * FUNCTION:    acpi_db_evaluate_all
 *
 * PARAMETERS:  none_acpi_gbl_db_method_info
 *
 * RETURN:      None
 *
 * DESCRIPTION: Namespace batch execution. Implements the "ALL" command.
 *              Execute all namepaths whose final nameseg matches the
 *              input nameseg.
 *
 ******************************************************************************/

void acpi_db_evaluate_all(char *name_seg)
{ … }
linux/drivers/acpi/acpica/dbmethod.c
