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![Colin Ian King](/assets/img/avatar_default.png)
ACPICA commit 1db14dc88f308119634d77ab9dcb6586b9fe4777 On the error return path when acpi_get_object_info fails the allocated pathname is not free'd leading to a memory leak. Free pathname to fix this. Link: https://github.com/acpica/acpica/commit/1db14dc8 Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
502 lines
13 KiB
C
502 lines
13 KiB
C
/*******************************************************************************
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*
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* Module Name: dbmethod - Debug commands for control methods
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*
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******************************************************************************/
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/*
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* Copyright (C) 2000 - 2017, Intel Corp.
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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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#include <acpi/acpi.h>
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#include "accommon.h"
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#include "acdispat.h"
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#include "acnamesp.h"
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#include "acdebug.h"
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#include "acparser.h"
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#include "acpredef.h"
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#define _COMPONENT ACPI_CA_DEBUGGER
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ACPI_MODULE_NAME("dbmethod")
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/* Local prototypes */
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static acpi_status
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acpi_db_walk_for_execute(acpi_handle obj_handle,
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u32 nesting_level, void *context, void **return_value);
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/*******************************************************************************
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*
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* FUNCTION: acpi_db_set_method_breakpoint
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*
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* PARAMETERS: location - AML offset of breakpoint
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* walk_state - Current walk info
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* op - Current Op (from parse walk)
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*
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* RETURN: None
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*
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* DESCRIPTION: Set a breakpoint in a control method at the specified
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* AML offset
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*
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******************************************************************************/
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void
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acpi_db_set_method_breakpoint(char *location,
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struct acpi_walk_state *walk_state,
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union acpi_parse_object *op)
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{
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u32 address;
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u32 aml_offset;
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if (!op) {
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acpi_os_printf("There is no method currently executing\n");
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return;
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}
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/* Get and verify the breakpoint address */
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address = strtoul(location, NULL, 16);
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aml_offset = (u32)ACPI_PTR_DIFF(op->common.aml,
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walk_state->parser_state.aml_start);
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if (address <= aml_offset) {
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acpi_os_printf("Breakpoint %X is beyond current address %X\n",
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address, aml_offset);
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}
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/* Save breakpoint in current walk */
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walk_state->user_breakpoint = address;
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acpi_os_printf("Breakpoint set at AML offset %X\n", address);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_db_set_method_call_breakpoint
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*
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* PARAMETERS: op - Current Op (from parse walk)
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*
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* RETURN: None
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*
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* DESCRIPTION: Set a breakpoint in a control method at the specified
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* AML offset
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*
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******************************************************************************/
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void acpi_db_set_method_call_breakpoint(union acpi_parse_object *op)
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{
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if (!op) {
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acpi_os_printf("There is no method currently executing\n");
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return;
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}
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acpi_gbl_step_to_next_call = TRUE;
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_db_set_method_data
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*
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* PARAMETERS: type_arg - L for local, A for argument
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* index_arg - which one
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* value_arg - Value to set.
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*
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* RETURN: None
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*
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* DESCRIPTION: Set a local or argument for the running control method.
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* NOTE: only object supported is Number.
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*
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******************************************************************************/
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void acpi_db_set_method_data(char *type_arg, char *index_arg, char *value_arg)
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{
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char type;
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u32 index;
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u32 value;
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struct acpi_walk_state *walk_state;
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union acpi_operand_object *obj_desc;
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acpi_status status;
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struct acpi_namespace_node *node;
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/* Validate type_arg */
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acpi_ut_strupr(type_arg);
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type = type_arg[0];
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if ((type != 'L') && (type != 'A') && (type != 'N')) {
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acpi_os_printf("Invalid SET operand: %s\n", type_arg);
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return;
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}
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value = strtoul(value_arg, NULL, 16);
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if (type == 'N') {
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node = acpi_db_convert_to_node(index_arg);
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if (!node) {
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return;
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}
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if (node->type != ACPI_TYPE_INTEGER) {
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acpi_os_printf("Can only set Integer nodes\n");
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return;
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}
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obj_desc = node->object;
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obj_desc->integer.value = value;
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return;
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}
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/* Get the index and value */
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index = strtoul(index_arg, NULL, 16);
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walk_state = acpi_ds_get_current_walk_state(acpi_gbl_current_walk_list);
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if (!walk_state) {
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acpi_os_printf("There is no method currently executing\n");
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return;
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}
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/* Create and initialize the new object */
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obj_desc = acpi_ut_create_integer_object((u64)value);
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if (!obj_desc) {
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acpi_os_printf("Could not create an internal object\n");
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return;
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}
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/* Store the new object into the target */
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switch (type) {
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case 'A':
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/* Set a method argument */
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if (index > ACPI_METHOD_MAX_ARG) {
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acpi_os_printf("Arg%u - Invalid argument name\n",
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index);
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goto cleanup;
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}
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status = acpi_ds_store_object_to_local(ACPI_REFCLASS_ARG,
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index, obj_desc,
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walk_state);
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if (ACPI_FAILURE(status)) {
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goto cleanup;
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}
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obj_desc = walk_state->arguments[index].object;
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acpi_os_printf("Arg%u: ", index);
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acpi_db_display_internal_object(obj_desc, walk_state);
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break;
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case 'L':
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/* Set a method local */
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if (index > ACPI_METHOD_MAX_LOCAL) {
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acpi_os_printf
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("Local%u - Invalid local variable name\n", index);
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goto cleanup;
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}
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status = acpi_ds_store_object_to_local(ACPI_REFCLASS_LOCAL,
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index, obj_desc,
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walk_state);
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if (ACPI_FAILURE(status)) {
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goto cleanup;
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}
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obj_desc = walk_state->local_variables[index].object;
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acpi_os_printf("Local%u: ", index);
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acpi_db_display_internal_object(obj_desc, walk_state);
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break;
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default:
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break;
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}
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cleanup:
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acpi_ut_remove_reference(obj_desc);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_db_disassemble_aml
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*
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* PARAMETERS: statements - Number of statements to disassemble
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* op - Current Op (from parse walk)
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*
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* RETURN: None
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*
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* DESCRIPTION: Display disassembled AML (ASL) starting from Op for the number
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* of statements specified.
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*
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******************************************************************************/
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void acpi_db_disassemble_aml(char *statements, union acpi_parse_object *op)
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{
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u32 num_statements = 8;
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if (!op) {
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acpi_os_printf("There is no method currently executing\n");
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return;
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}
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if (statements) {
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num_statements = strtoul(statements, NULL, 0);
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}
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#ifdef ACPI_DISASSEMBLER
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acpi_dm_disassemble(NULL, op, num_statements);
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#endif
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_db_disassemble_method
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*
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* PARAMETERS: name - Name of control method
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*
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* RETURN: None
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*
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* DESCRIPTION: Display disassembled AML (ASL) starting from Op for the number
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* of statements specified.
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*
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******************************************************************************/
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acpi_status acpi_db_disassemble_method(char *name)
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{
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acpi_status status;
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union acpi_parse_object *op;
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struct acpi_walk_state *walk_state;
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union acpi_operand_object *obj_desc;
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struct acpi_namespace_node *method;
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method = acpi_db_convert_to_node(name);
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if (!method) {
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return (AE_BAD_PARAMETER);
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}
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if (method->type != ACPI_TYPE_METHOD) {
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ACPI_ERROR((AE_INFO, "%s (%s): Object must be a control method",
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name, acpi_ut_get_type_name(method->type)));
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return (AE_BAD_PARAMETER);
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}
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obj_desc = method->object;
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op = acpi_ps_create_scope_op(obj_desc->method.aml_start);
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if (!op) {
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return (AE_NO_MEMORY);
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}
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/* Create and initialize a new walk state */
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walk_state = acpi_ds_create_walk_state(0, op, NULL, NULL);
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if (!walk_state) {
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return (AE_NO_MEMORY);
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}
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status = acpi_ds_init_aml_walk(walk_state, op, NULL,
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obj_desc->method.aml_start,
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obj_desc->method.aml_length, NULL,
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ACPI_IMODE_LOAD_PASS1);
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if (ACPI_FAILURE(status)) {
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return (status);
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}
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status = acpi_ut_allocate_owner_id(&obj_desc->method.owner_id);
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walk_state->owner_id = obj_desc->method.owner_id;
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/* Push start scope on scope stack and make it current */
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status = acpi_ds_scope_stack_push(method, method->type, walk_state);
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if (ACPI_FAILURE(status)) {
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return (status);
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}
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/* Parse the entire method AML including deferred operators */
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walk_state->parse_flags &= ~ACPI_PARSE_DELETE_TREE;
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walk_state->parse_flags |= ACPI_PARSE_DISASSEMBLE;
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status = acpi_ps_parse_aml(walk_state);
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#ifdef ACPI_DISASSEMBLER
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(void)acpi_dm_parse_deferred_ops(op);
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/* Now we can disassemble the method */
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acpi_gbl_dm_opt_verbose = FALSE;
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acpi_dm_disassemble(NULL, op, 0);
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acpi_gbl_dm_opt_verbose = TRUE;
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#endif
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acpi_ps_delete_parse_tree(op);
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/* Method cleanup */
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acpi_ns_delete_namespace_subtree(method);
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acpi_ns_delete_namespace_by_owner(obj_desc->method.owner_id);
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acpi_ut_release_owner_id(&obj_desc->method.owner_id);
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_db_walk_for_execute
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*
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* PARAMETERS: Callback from walk_namespace
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*
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* RETURN: Status
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*
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* DESCRIPTION: Batch execution module. Currently only executes predefined
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* ACPI names.
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*
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******************************************************************************/
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static acpi_status
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acpi_db_walk_for_execute(acpi_handle obj_handle,
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u32 nesting_level, void *context, void **return_value)
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{
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struct acpi_namespace_node *node =
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(struct acpi_namespace_node *)obj_handle;
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struct acpi_db_execute_walk *info =
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(struct acpi_db_execute_walk *)context;
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struct acpi_buffer return_obj;
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acpi_status status;
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char *pathname;
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u32 i;
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struct acpi_device_info *obj_info;
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struct acpi_object_list param_objects;
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union acpi_object params[ACPI_METHOD_NUM_ARGS];
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const union acpi_predefined_info *predefined;
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predefined = acpi_ut_match_predefined_method(node->name.ascii);
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if (!predefined) {
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return (AE_OK);
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}
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if (node->type == ACPI_TYPE_LOCAL_SCOPE) {
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return (AE_OK);
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}
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pathname = acpi_ns_get_external_pathname(node);
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if (!pathname) {
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return (AE_OK);
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}
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/* Get the object info for number of method parameters */
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status = acpi_get_object_info(obj_handle, &obj_info);
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if (ACPI_FAILURE(status)) {
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ACPI_FREE(pathname);
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return (status);
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}
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param_objects.pointer = NULL;
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param_objects.count = 0;
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if (obj_info->type == ACPI_TYPE_METHOD) {
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/* Setup default parameters */
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for (i = 0; i < obj_info->param_count; i++) {
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params[i].type = ACPI_TYPE_INTEGER;
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params[i].integer.value = 1;
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}
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param_objects.pointer = params;
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param_objects.count = obj_info->param_count;
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}
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ACPI_FREE(obj_info);
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return_obj.pointer = NULL;
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return_obj.length = ACPI_ALLOCATE_BUFFER;
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/* Do the actual method execution */
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acpi_gbl_method_executing = TRUE;
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status = acpi_evaluate_object(node, NULL, ¶m_objects, &return_obj);
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acpi_os_printf("%-32s returned %s\n", pathname,
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acpi_format_exception(status));
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acpi_gbl_method_executing = FALSE;
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ACPI_FREE(pathname);
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/* Ignore status from method execution */
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status = AE_OK;
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/* Update count, check if we have executed enough methods */
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info->count++;
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if (info->count >= info->max_count) {
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status = AE_CTRL_TERMINATE;
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}
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return (status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_db_evaluate_predefined_names
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*
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* PARAMETERS: None
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*
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* RETURN: None
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*
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* DESCRIPTION: Namespace batch execution. Execute predefined names in the
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* namespace, up to the max count, if specified.
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*
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******************************************************************************/
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void acpi_db_evaluate_predefined_names(void)
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{
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struct acpi_db_execute_walk info;
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info.count = 0;
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info.max_count = ACPI_UINT32_MAX;
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/* Search all nodes in namespace */
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(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
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ACPI_UINT32_MAX, acpi_db_walk_for_execute,
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NULL, (void *)&info, NULL);
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acpi_os_printf("Evaluated %u predefined names in the namespace\n",
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info.count);
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}
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