summaryrefslogtreecommitdiff
path: root/drivers/acpi/acpica/dsdebug.c
blob: 7df9b50e17a7d22cbba1d152a52cf0519a2812a1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
/******************************************************************************
 *
 * Module Name: dsdebug - Parser/Interpreter interface - debugging
 *
 *****************************************************************************/

/*
 * Copyright (C) 2000 - 2015, Intel Corp.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 */

#include <acpi/acpi.h>
#include "accommon.h"
#include "acdispat.h"
#include "acnamesp.h"
#ifdef ACPI_DISASSEMBLER
#include "acdisasm.h"
#endif

#define _COMPONENT          ACPI_DISPATCHER
ACPI_MODULE_NAME("dsdebug")

#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
/* Local prototypes */
static void
acpi_ds_print_node_pathname(struct acpi_namespace_node *node,
			    const char *message);

/*******************************************************************************
 *
 * FUNCTION:    acpi_ds_print_node_pathname
 *
 * PARAMETERS:  node            - Object
 *              message         - Prefix message
 *
 * DESCRIPTION: Print an object's full namespace pathname
 *              Manages allocation/freeing of a pathname buffer
 *
 ******************************************************************************/

static void
acpi_ds_print_node_pathname(struct acpi_namespace_node *node,
			    const char *message)
{
	struct acpi_buffer buffer;
	acpi_status status;

	ACPI_FUNCTION_TRACE(ds_print_node_pathname);

	if (!node) {
		ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "[NULL NAME]"));
		return_VOID;
	}

	/* Convert handle to full pathname and print it (with supplied message) */

	buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;

	status = acpi_ns_handle_to_pathname(node, &buffer, FALSE);
	if (ACPI_SUCCESS(status)) {
		if (message) {
			ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "%s ",
					      message));
		}

		ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "[%s] (Node %p)",
				      (char *)buffer.pointer, node));
		ACPI_FREE(buffer.pointer);
	}

	return_VOID;
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ds_dump_method_stack
 *
 * PARAMETERS:  status          - Method execution status
 *              walk_state      - Current state of the parse tree walk
 *              op              - Executing parse op
 *
 * RETURN:      None
 *
 * DESCRIPTION: Called when a method has been aborted because of an error.
 *              Dumps the method execution stack.
 *
 ******************************************************************************/

void
acpi_ds_dump_method_stack(acpi_status status,
			  struct acpi_walk_state *walk_state,
			  union acpi_parse_object *op)
{
	union acpi_parse_object *next;
	struct acpi_thread_state *thread;
	struct acpi_walk_state *next_walk_state;
	struct acpi_namespace_node *previous_method = NULL;
	union acpi_operand_object *method_desc;
	char *pathname = NULL;

	ACPI_FUNCTION_TRACE(ds_dump_method_stack);

	/* Ignore control codes, they are not errors */

	if ((status & AE_CODE_MASK) == AE_CODE_CONTROL) {
		return_VOID;
	}

	/* We may be executing a deferred opcode */

	if (walk_state->deferred_node) {
		ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
				  "Executing subtree for Buffer/Package/Region\n"));
		return_VOID;
	}

	/*
	 * If there is no Thread, we are not actually executing a method.
	 * This can happen when the iASL compiler calls the interpreter
	 * to perform constant folding.
	 */
	thread = walk_state->thread;
	if (!thread) {
		return_VOID;
	}

	/* Display exception and method name */

	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
			  "\n**** Exception %s during execution of method ",
			  acpi_format_exception(status)));
	acpi_ds_print_node_pathname(walk_state->method_node, NULL);

	/* Display stack of executing methods */

	ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH,
			      "\n\nMethod Execution Stack:\n"));
	next_walk_state = thread->walk_state_list;

	/* Walk list of linked walk states */

	while (next_walk_state) {
		method_desc = next_walk_state->method_desc;
		if (method_desc && method_desc->method.node) {
			pathname = acpi_ns_get_normalized_pathname((struct
								    acpi_namespace_node
								    *)
								   method_desc->
								   method.node,
								   TRUE);
		}
		if (pathname) {
			ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
					  "End method [0x%p:%s] execution.\n",
					  method_desc->method.aml_start,
					  pathname));
			ACPI_FREE(pathname);
			pathname = NULL;
		} else {
			ACPI_DEBUG_PRINT((ACPI_DB_TRACE_POINT,
					  "End method [0x%p] execution.\n",
					  method_desc->method.aml_start));
		}

		ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
				  "    Method [%4.4s] executing: ",
				  acpi_ut_get_node_name(next_walk_state->
							method_node)));

		/* First method is the currently executing method */

		if (next_walk_state == walk_state) {
			if (op) {

				/* Display currently executing ASL statement */

				next = op->common.next;
				op->common.next = NULL;

#ifdef ACPI_DISASSEMBLER
				acpi_dm_disassemble(next_walk_state, op,
						    ACPI_UINT32_MAX);
#endif
				op->common.next = next;
			}
		} else {
			/*
			 * This method has called another method
			 * NOTE: the method call parse subtree is already deleted at this
			 * point, so we cannot disassemble the method invocation.
			 */
			ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH,
					      "Call to method "));
			acpi_ds_print_node_pathname(previous_method, NULL);
		}

		previous_method = next_walk_state->method_node;
		next_walk_state = next_walk_state->next;
		ACPI_DEBUG_PRINT_RAW((ACPI_DB_DISPATCH, "\n"));
	}

	return_VOID;
}

#else
void
acpi_ds_dump_method_stack(acpi_status status,
			  struct acpi_walk_state *walk_state,
			  union acpi_parse_object *op)
{
	return;
}

#endif