summaryrefslogtreecommitdiff
path: root/drivers/acpi/acpica/dbmethod.c
blob: f17a86f6b16bc90ff5f4e29ba3a1737f212b49c5 (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
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
/*******************************************************************************
 *
 * Module Name: dbmethod - Debug commands for control methods
 *
 ******************************************************************************/

/*
 * Copyright (C) 2000 - 2016, 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"
#include "acdebug.h"
#include "acparser.h"
#include "acpredef.h"

#define _COMPONENT          ACPI_CA_DEBUGGER
ACPI_MODULE_NAME("dbmethod")

/*******************************************************************************
 *
 * 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)
{
	u32 address;
	u32 aml_offset;

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

	/* Get and verify the breakpoint address */

	address = strtoul(location, NULL, 16);
	aml_offset = (u32)ACPI_PTR_DIFF(op->common.aml,
					walk_state->parser_state.aml_start);
	if (address <= aml_offset) {
		acpi_os_printf("Breakpoint %X is beyond current address %X\n",
			       address, aml_offset);
	}

	/* Save breakpoint in current walk */

	walk_state->user_breakpoint = address;
	acpi_os_printf("Breakpoint set at AML offset %X\n", address);
}

/*******************************************************************************
 *
 * 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)
{

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

	acpi_gbl_step_to_next_call = TRUE;
}

/*******************************************************************************
 *
 * 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)
{
	char type;
	u32 index;
	u32 value;
	struct acpi_walk_state *walk_state;
	union acpi_operand_object *obj_desc;
	acpi_status status;
	struct acpi_namespace_node *node;

	/* Validate type_arg */

	acpi_ut_strupr(type_arg);
	type = type_arg[0];
	if ((type != 'L') && (type != 'A') && (type != 'N')) {
		acpi_os_printf("Invalid SET operand: %s\n", type_arg);
		return;
	}

	value = strtoul(value_arg, NULL, 16);

	if (type == 'N') {
		node = acpi_db_convert_to_node(index_arg);
		if (!node) {
			return;
		}

		if (node->type != ACPI_TYPE_INTEGER) {
			acpi_os_printf("Can only set Integer nodes\n");
			return;
		}
		obj_desc = node->object;
		obj_desc->integer.value = value;
		return;
	}

	/* Get the index and value */

	index = strtoul(index_arg, NULL, 16);

	walk_state = acpi_ds_get_current_walk_state(acpi_gbl_current_walk_list);
	if (!walk_state) {
		acpi_os_printf("There is no method currently executing\n");
		return;
	}

	/* Create and initialize the new object */

	obj_desc = acpi_ut_create_integer_object((u64)value);
	if (!obj_desc) {
		acpi_os_printf("Could not create an internal object\n");
		return;
	}

	/* Store the new object into the target */

	switch (type) {
	case 'A':

		/* Set a method argument */

		if (index > ACPI_METHOD_MAX_ARG) {
			acpi_os_printf("Arg%u - Invalid argument name\n",
				       index);
			goto cleanup;
		}

		status = acpi_ds_store_object_to_local(ACPI_REFCLASS_ARG,
						       index, obj_desc,
						       walk_state);
		if (ACPI_FAILURE(status)) {
			goto cleanup;
		}

		obj_desc = walk_state->arguments[index].object;

		acpi_os_printf("Arg%u: ", index);
		acpi_db_display_internal_object(obj_desc, walk_state);
		break;

	case 'L':

		/* Set a method local */

		if (index > ACPI_METHOD_MAX_LOCAL) {
			acpi_os_printf
			    ("Local%u - Invalid local variable name\n", index);
			goto cleanup;
		}

		status = acpi_ds_store_object_to_local(ACPI_REFCLASS_LOCAL,
						       index, obj_desc,
						       walk_state);
		if (ACPI_FAILURE(status)) {
			goto cleanup;
		}

		obj_desc = walk_state->local_variables[index].object;

		acpi_os_printf("Local%u: ", index);
		acpi_db_display_internal_object(obj_desc, walk_state);
		break;

	default:

		break;
	}

cleanup:
	acpi_ut_remove_reference(obj_desc);
}

/*******************************************************************************
 *
 * 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);
	}
#ifdef ACPI_DISASSEMBLER
	acpi_dm_disassemble(NULL, op, num_statements);
#endif
}

/*******************************************************************************
 *
 * 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);
	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);

#ifdef ACPI_DISASSEMBLER
	(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;
#endif

	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);
}