kernel/drivers/acpi/acpica/dsdebug.c

   1 /******************************************************************************
   2  *
   3  * Module Name: dsdebug - Parser/Interpreter interface - debugging
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2015, 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
  54 ACPI_MODULE_NAME("dsdebug")
  55
  56 #if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
  57 /* Local prototypes */
  58 static void
  59 acpi_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
  74 static void
  75 acpi_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
 122 void
 123 acpi_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         acpi_ds_print_node_pathname(walk_state->method_node, NULL);
 165
 166         /* Display stack of executing methods */
 167
 168         ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH,
 169                               "\n\nMethod Execution Stack:\n"));
 170         next_walk_state = thread->walk_state_list;
 171
 172         /* Walk list of linked walk states */
 173
 174         while (next_walk_state) {
 175                 method_desc = next_walk_state->method_desc;
 176                 if (method_desc) {
 177                         acpi_ex_stop_trace_method((struct acpi_namespace_node *)
 178                                                   method_desc->method.node,
 179                                                   method_desc, walk_state);
 180                 }
 181
 182                 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
 183                                   "    Method [%4.4s] executing: ",
 184                                   acpi_ut_get_node_name(next_walk_state->
 185                                                         method_node)));
 186
 187                 /* First method is the currently executing method */
 188
 189                 if (next_walk_state == walk_state) {
 190                         if (op) {
 191
 192                                 /* Display currently executing ASL statement */
 193
 194                                 next = op->common.next;
 195                                 op->common.next = NULL;
 196
 197 #ifdef ACPI_DISASSEMBLER
 198                                 acpi_dm_disassemble(next_walk_state, op,
 199                                                     ACPI_UINT32_MAX);
 200 #endif
 201                                 op->common.next = next;
 202                         }
 203                 } else {
 204                         /*
 205                          * This method has called another method
 206                          * NOTE: the method call parse subtree is already deleted at this
 207                          * point, so we cannot disassemble the method invocation.
 208                          */
 209                         ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH,
 210                                               "Call to method "));
 211                         acpi_ds_print_node_pathname(previous_method, NULL);
 212                 }
 213
 214                 previous_method = next_walk_state->method_node;
 215                 next_walk_state = next_walk_state->next;
 216                 ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "\n"));
 217         }
 218
 219         return_VOID;
 220 }
 221
 222 #else
 223 void
 224 acpi_ds_dump_method_stack(acpi_status status,
 225                           struct acpi_walk_state *walk_state,
 226                           union acpi_parse_object *op)
 227 {
 228         return;
 229 }
 230
 231 #endif