LXR linux/drivers/acpi/acpica/dsdebug.c

   1/******************************************************************************
   2 *
   3 * Module Name: dsdebug - Parser/Interpreter interface - debugging
   4 *
   5 *****************************************************************************/
   6
   7/*
   8 * Copyright (C) 2000 - 2016, Intel Corp.
   9 * All rights reserved.
  10 *
  11 * Redistribution and use in source and binary forms, with or without
  12 * modification, are permitted provided that the following conditions
  13 * are met:
  14 * 1. Redistributions of source code must retain the above copyright
  15 *    notice, this list of conditions, and the following disclaimer,
  16 *    without modification.
  17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  18 *    substantially similar to the "NO WARRANTY" disclaimer below
  19 *    ("Disclaimer") and any redistribution must be conditioned upon
  20 *    including a substantially similar Disclaimer requirement for further
  21 *    binary redistribution.
  22 * 3. Neither the names of the above-listed copyright holders nor the names
  23 *    of any contributors may be used to endorse or promote products derived
  24 *    from this software without specific prior written permission.
  25 *
  26 * Alternatively, this software may be distributed under the terms of the
  27 * GNU General Public License ("GPL") version 2 as published by the Free
  28 * Software Foundation.
  29 *
  30 * NO WARRANTY
  31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  41 * POSSIBILITY OF SUCH DAMAGES.
  42 */
  43
  44#include <acpi/acpi.h>
  45#include "accommon.h"
  46#include "acdispat.h"
  47#include "acnamesp.h"
  48#ifdef ACPI_DISASSEMBLER
  49#include "acdisasm.h"
  50#endif
  51#include "acinterp.h"
  52
  53#define _COMPONENT          ACPI_DISPATCHER
  54ACPI_MODULE_NAME("dsdebug")
  55
  56#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
  57/* Local prototypes */
  58static void
  59acpi_ds_print_node_pathname(struct acpi_namespace_node *node,
  60                            const char *message);
  61
  62/*******************************************************************************
  63 *
  64 * FUNCTION:    acpi_ds_print_node_pathname
  65 *
  66 * PARAMETERS:  node            - Object
  67 *              message         - Prefix message
  68 *
  69 * DESCRIPTION: Print an object's full namespace pathname
  70 *              Manages allocation/freeing of a pathname buffer
  71 *
  72 ******************************************************************************/
  73
  74static void
  75acpi_ds_print_node_pathname(struct acpi_namespace_node *node,
  76                            const char *message)
  77{
  78        struct acpi_buffer buffer;
  79        acpi_status status;
  80
  81        ACPI_FUNCTION_TRACE(ds_print_node_pathname);
  82
  83        if (!node) {
  84                ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "[NULL NAME]"));
  85                return_VOID;
  86        }
  87
  88        /* Convert handle to full pathname and print it (with supplied message) */
  89
  90        buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
  91
  92        status = acpi_ns_handle_to_pathname(node, &buffer, TRUE);
  93        if (ACPI_SUCCESS(status)) {
  94                if (message) {
  95                        ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "%s ",
  96                                              message));
  97                }
  98
  99                ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "[%s] (Node %p)",
 100                                      (char *)buffer.pointer, node));
 101                ACPI_FREE(buffer.pointer);
 102        }
 103
 104        return_VOID;
 105}
 106
 107/*******************************************************************************
 108 *
 109 * FUNCTION:    acpi_ds_dump_method_stack
 110 *
 111 * PARAMETERS:  status          - Method execution status
 112 *              walk_state      - Current state of the parse tree walk
 113 *              op              - Executing parse op
 114 *
 115 * RETURN:      None
 116 *
 117 * DESCRIPTION: Called when a method has been aborted because of an error.
 118 *              Dumps the method execution stack.
 119 *
 120 ******************************************************************************/
 121
 122void
 123acpi_ds_dump_method_stack(acpi_status status,
 124                          struct acpi_walk_state *walk_state,
 125                          union acpi_parse_object *op)
 126{
 127        union acpi_parse_object *next;
 128        struct acpi_thread_state *thread;
 129        struct acpi_walk_state *next_walk_state;
 130        struct acpi_namespace_node *previous_method = NULL;
 131        union acpi_operand_object *method_desc;
 132
 133        ACPI_FUNCTION_TRACE(ds_dump_method_stack);
 134
 135        /* Ignore control codes, they are not errors */
 136
 137        if ((status & AE_CODE_MASK) == AE_CODE_CONTROL) {
 138                return_VOID;
 139        }
 140
 141        /* We may be executing a deferred opcode */
 142
 143        if (walk_state->deferred_node) {
 144                ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
 145                                  "Executing subtree for Buffer/Package/Region\n"));
 146                return_VOID;
 147        }
 148
 149        /*
 150         * If there is no Thread, we are not actually executing a method.
 151         * This can happen when the iASL compiler calls the interpreter
 152         * to perform constant folding.
 153         */
 154        thread = walk_state->thread;
 155        if (!thread) {
 156                return_VOID;
 157        }
 158
 159        /* Display exception and method name */
 160
 161        ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
 162                          "\n**** Exception %s during execution of method ",
 163                          acpi_format_exception(status)));
 164
 165        acpi_ds_print_node_pathname(walk_state->method_node, NULL);
 166
 167        /* Display stack of executing methods */
 168
 169        ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH,
 170                              "\n\nMethod Execution Stack:\n"));
 171        next_walk_state = thread->walk_state_list;
 172
 173        /* Walk list of linked walk states */
 174
 175        while (next_walk_state) {
 176                method_desc = next_walk_state->method_desc;
 177                if (method_desc) {
 178                        acpi_ex_stop_trace_method((struct acpi_namespace_node *)
 179                                                  method_desc->method.node,
 180                                                  method_desc, walk_state);
 181                }
 182
 183                ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
 184                                  "    Method [%4.4s] executing: ",
 185                                  acpi_ut_get_node_name(next_walk_state->
 186                                                        method_node)));
 187
 188                /* First method is the currently executing method */
 189
 190                if (next_walk_state == walk_state) {
 191                        if (op) {
 192
 193                                /* Display currently executing ASL statement */
 194
 195                                next = op->common.next;
 196                                op->common.next = NULL;
 197
 198#ifdef ACPI_DISASSEMBLER
 199                                acpi_dm_disassemble(next_walk_state, op,
 200                                                    ACPI_UINT32_MAX);
 201#endif
 202                                op->common.next = next;
 203                        }
 204                } else {
 205                        /*
 206                         * This method has called another method
 207                         * NOTE: the method call parse subtree is already deleted at
 208                         * this point, so we cannot disassemble the method invocation.
 209                         */
 210                        ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH,
 211                                              "Call to method "));
 212                        acpi_ds_print_node_pathname(previous_method, NULL);
 213                }
 214
 215                previous_method = next_walk_state->method_node;
 216                next_walk_state = next_walk_state->next;
 217                ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "\n"));
 218        }
 219
 220        return_VOID;
 221}
 222
 223#else
 224void
 225acpi_ds_dump_method_stack(acpi_status status,
 226                          struct acpi_walk_state *walk_state,
 227                          union acpi_parse_object *op)
 228{
 229        return;
 230}
 231
 232#endif
 233