1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 2 /******************************************************************************* 3 * 4 * Module Name: dbmethod - Debug commands for control methods 5 * 6 ******************************************************************************/ 7 8 #include <acpi/acpi.h> 9 #include "accommon.h" 10 #include "acdispat.h" 11 #include "acnamesp.h" 12 #include "acdebug.h" 13 #include "acparser.h" 14 #include "acpredef.h" 15 16 #define _COMPONENT ACPI_CA_DEBUGGER 17 ACPI_MODULE_NAME("dbmethod") 18 19 /* Local prototypes */ 20 static acpi_status 21 acpi_db_walk_for_execute(acpi_handle obj_handle, 22 u32 nesting_level, void *context, void **return_value); 23 24 /******************************************************************************* 25 * 26 * FUNCTION: acpi_db_set_method_breakpoint 27 * 28 * PARAMETERS: location - AML offset of breakpoint 29 * walk_state - Current walk info 30 * op - Current Op (from parse walk) 31 * 32 * RETURN: None 33 * 34 * DESCRIPTION: Set a breakpoint in a control method at the specified 35 * AML offset 36 * 37 ******************************************************************************/ 38 39 void 40 acpi_db_set_method_breakpoint(char *location, 41 struct acpi_walk_state *walk_state, 42 union acpi_parse_object *op) 43 { 44 u32 address; 45 u32 aml_offset; 46 47 if (!op) { 48 acpi_os_printf("There is no method currently executing\n"); 49 return; 50 } 51 52 /* Get and verify the breakpoint address */ 53 54 address = strtoul(location, NULL, 16); 55 aml_offset = (u32)ACPI_PTR_DIFF(op->common.aml, 56 walk_state->parser_state.aml_start); 57 if (address <= aml_offset) { 58 acpi_os_printf("Breakpoint %X is beyond current address %X\n", 59 address, aml_offset); 60 } 61 62 /* Save breakpoint in current walk */ 63 64 walk_state->user_breakpoint = address; 65 acpi_os_printf("Breakpoint set at AML offset %X\n", address); 66 } 67 68 /******************************************************************************* 69 * 70 * FUNCTION: acpi_db_set_method_call_breakpoint 71 * 72 * PARAMETERS: op - Current Op (from parse walk) 73 * 74 * RETURN: None 75 * 76 * DESCRIPTION: Set a breakpoint in a control method at the specified 77 * AML offset 78 * 79 ******************************************************************************/ 80 81 void acpi_db_set_method_call_breakpoint(union acpi_parse_object *op) 82 { 83 84 if (!op) { 85 acpi_os_printf("There is no method currently executing\n"); 86 return; 87 } 88 89 acpi_gbl_step_to_next_call = TRUE; 90 } 91 92 /******************************************************************************* 93 * 94 * FUNCTION: acpi_db_set_method_data 95 * 96 * PARAMETERS: type_arg - L for local, A for argument 97 * index_arg - which one 98 * value_arg - Value to set. 99 * 100 * RETURN: None 101 * 102 * DESCRIPTION: Set a local or argument for the running control method. 103 * NOTE: only object supported is Number. 104 * 105 ******************************************************************************/ 106 107 void acpi_db_set_method_data(char *type_arg, char *index_arg, char *value_arg) 108 { 109 char type; 110 u32 index; 111 u32 value; 112 struct acpi_walk_state *walk_state; 113 union acpi_operand_object *obj_desc; 114 acpi_status status; 115 struct acpi_namespace_node *node; 116 117 /* Validate type_arg */ 118 119 acpi_ut_strupr(type_arg); 120 type = type_arg[0]; 121 if ((type != 'L') && (type != 'A') && (type != 'N')) { 122 acpi_os_printf("Invalid SET operand: %s\n", type_arg); 123 return; 124 } 125 126 value = strtoul(value_arg, NULL, 16); 127 128 if (type == 'N') { 129 node = acpi_db_convert_to_node(index_arg); 130 if (!node) { 131 return; 132 } 133 134 if (node->type != ACPI_TYPE_INTEGER) { 135 acpi_os_printf("Can only set Integer nodes\n"); 136 return; 137 } 138 obj_desc = node->object; 139 obj_desc->integer.value = value; 140 return; 141 } 142 143 /* Get the index and value */ 144 145 index = strtoul(index_arg, NULL, 16); 146 147 walk_state = acpi_ds_get_current_walk_state(acpi_gbl_current_walk_list); 148 if (!walk_state) { 149 acpi_os_printf("There is no method currently executing\n"); 150 return; 151 } 152 153 /* Create and initialize the new object */ 154 155 obj_desc = acpi_ut_create_integer_object((u64)value); 156 if (!obj_desc) { 157 acpi_os_printf("Could not create an internal object\n"); 158 return; 159 } 160 161 /* Store the new object into the target */ 162 163 switch (type) { 164 case 'A': 165 166 /* Set a method argument */ 167 168 if (index > ACPI_METHOD_MAX_ARG) { 169 acpi_os_printf("Arg%u - Invalid argument name\n", 170 index); 171 goto cleanup; 172 } 173 174 status = acpi_ds_store_object_to_local(ACPI_REFCLASS_ARG, 175 index, obj_desc, 176 walk_state); 177 if (ACPI_FAILURE(status)) { 178 goto cleanup; 179 } 180 181 obj_desc = walk_state->arguments[index].object; 182 183 acpi_os_printf("Arg%u: ", index); 184 acpi_db_display_internal_object(obj_desc, walk_state); 185 break; 186 187 case 'L': 188 189 /* Set a method local */ 190 191 if (index > ACPI_METHOD_MAX_LOCAL) { 192 acpi_os_printf 193 ("Local%u - Invalid local variable name\n", index); 194 goto cleanup; 195 } 196 197 status = acpi_ds_store_object_to_local(ACPI_REFCLASS_LOCAL, 198 index, obj_desc, 199 walk_state); 200 if (ACPI_FAILURE(status)) { 201 goto cleanup; 202 } 203 204 obj_desc = walk_state->local_variables[index].object; 205 206 acpi_os_printf("Local%u: ", index); 207 acpi_db_display_internal_object(obj_desc, walk_state); 208 break; 209 210 default: 211 212 break; 213 } 214 215 cleanup: 216 acpi_ut_remove_reference(obj_desc); 217 } 218 219 #ifdef ACPI_DISASSEMBLER 220 /******************************************************************************* 221 * 222 * FUNCTION: acpi_db_disassemble_aml 223 * 224 * PARAMETERS: statements - Number of statements to disassemble 225 * op - Current Op (from parse walk) 226 * 227 * RETURN: None 228 * 229 * DESCRIPTION: Display disassembled AML (ASL) starting from Op for the number 230 * of statements specified. 231 * 232 ******************************************************************************/ 233 234 void acpi_db_disassemble_aml(char *statements, union acpi_parse_object *op) 235 { 236 u32 num_statements = 8; 237 238 if (!op) { 239 acpi_os_printf("There is no method currently executing\n"); 240 return; 241 } 242 243 if (statements) { 244 num_statements = strtoul(statements, NULL, 0); 245 } 246 247 acpi_dm_disassemble(NULL, op, num_statements); 248 } 249 250 /******************************************************************************* 251 * 252 * FUNCTION: acpi_db_disassemble_method 253 * 254 * PARAMETERS: name - Name of control method 255 * 256 * RETURN: None 257 * 258 * DESCRIPTION: Display disassembled AML (ASL) starting from Op for the number 259 * of statements specified. 260 * 261 ******************************************************************************/ 262 263 acpi_status acpi_db_disassemble_method(char *name) 264 { 265 acpi_status status; 266 union acpi_parse_object *op; 267 struct acpi_walk_state *walk_state; 268 union acpi_operand_object *obj_desc; 269 struct acpi_namespace_node *method; 270 271 method = acpi_db_convert_to_node(name); 272 if (!method) { 273 return (AE_BAD_PARAMETER); 274 } 275 276 if (method->type != ACPI_TYPE_METHOD) { 277 ACPI_ERROR((AE_INFO, "%s (%s): Object must be a control method", 278 name, acpi_ut_get_type_name(method->type))); 279 return (AE_BAD_PARAMETER); 280 } 281 282 obj_desc = method->object; 283 284 op = acpi_ps_create_scope_op(obj_desc->method.aml_start); 285 if (!op) { 286 return (AE_NO_MEMORY); 287 } 288 289 /* Create and initialize a new walk state */ 290 291 walk_state = acpi_ds_create_walk_state(0, op, NULL, NULL); 292 if (!walk_state) { 293 return (AE_NO_MEMORY); 294 } 295 296 status = acpi_ds_init_aml_walk(walk_state, op, NULL, 297 obj_desc->method.aml_start, 298 obj_desc->method.aml_length, NULL, 299 ACPI_IMODE_LOAD_PASS1); 300 if (ACPI_FAILURE(status)) { 301 return (status); 302 } 303 304 status = acpi_ut_allocate_owner_id(&obj_desc->method.owner_id); 305 if (ACPI_FAILURE(status)) { 306 return (status); 307 } 308 309 walk_state->owner_id = obj_desc->method.owner_id; 310 311 /* Push start scope on scope stack and make it current */ 312 313 status = acpi_ds_scope_stack_push(method, method->type, walk_state); 314 if (ACPI_FAILURE(status)) { 315 return (status); 316 } 317 318 /* Parse the entire method AML including deferred operators */ 319 320 walk_state->parse_flags &= ~ACPI_PARSE_DELETE_TREE; 321 walk_state->parse_flags |= ACPI_PARSE_DISASSEMBLE; 322 323 status = acpi_ps_parse_aml(walk_state); 324 (void)acpi_dm_parse_deferred_ops(op); 325 326 /* Now we can disassemble the method */ 327 328 acpi_gbl_dm_opt_verbose = FALSE; 329 acpi_dm_disassemble(NULL, op, 0); 330 acpi_gbl_dm_opt_verbose = TRUE; 331 332 acpi_ps_delete_parse_tree(op); 333 334 /* Method cleanup */ 335 336 acpi_ns_delete_namespace_subtree(method); 337 acpi_ns_delete_namespace_by_owner(obj_desc->method.owner_id); 338 acpi_ut_release_owner_id(&obj_desc->method.owner_id); 339 return (AE_OK); 340 } 341 #endif 342 343 /******************************************************************************* 344 * 345 * FUNCTION: acpi_db_walk_for_execute 346 * 347 * PARAMETERS: Callback from walk_namespace 348 * 349 * RETURN: Status 350 * 351 * DESCRIPTION: Batch execution module. Currently only executes predefined 352 * ACPI names. 353 * 354 ******************************************************************************/ 355 356 static acpi_status 357 acpi_db_walk_for_execute(acpi_handle obj_handle, 358 u32 nesting_level, void *context, void **return_value) 359 { 360 struct acpi_namespace_node *node = 361 (struct acpi_namespace_node *)obj_handle; 362 struct acpi_db_execute_walk *info = 363 (struct acpi_db_execute_walk *)context; 364 struct acpi_buffer return_obj; 365 acpi_status status; 366 char *pathname; 367 u32 i; 368 struct acpi_device_info *obj_info; 369 struct acpi_object_list param_objects; 370 union acpi_object params[ACPI_METHOD_NUM_ARGS]; 371 const union acpi_predefined_info *predefined; 372 373 predefined = acpi_ut_match_predefined_method(node->name.ascii); 374 if (!predefined) { 375 return (AE_OK); 376 } 377 378 if (node->type == ACPI_TYPE_LOCAL_SCOPE) { 379 return (AE_OK); 380 } 381 382 pathname = acpi_ns_get_external_pathname(node); 383 if (!pathname) { 384 return (AE_OK); 385 } 386 387 /* Get the object info for number of method parameters */ 388 389 status = acpi_get_object_info(obj_handle, &obj_info); 390 if (ACPI_FAILURE(status)) { 391 ACPI_FREE(pathname); 392 return (status); 393 } 394 395 param_objects.pointer = NULL; 396 param_objects.count = 0; 397 398 if (obj_info->type == ACPI_TYPE_METHOD) { 399 400 /* Setup default parameters */ 401 402 for (i = 0; i < obj_info->param_count; i++) { 403 params[i].type = ACPI_TYPE_INTEGER; 404 params[i].integer.value = 1; 405 } 406 407 param_objects.pointer = params; 408 param_objects.count = obj_info->param_count; 409 } 410 411 ACPI_FREE(obj_info); 412 return_obj.pointer = NULL; 413 return_obj.length = ACPI_ALLOCATE_BUFFER; 414 415 /* Do the actual method execution */ 416 417 acpi_gbl_method_executing = TRUE; 418 419 status = acpi_evaluate_object(node, NULL, ¶m_objects, &return_obj); 420 421 acpi_os_printf("%-32s returned %s\n", pathname, 422 acpi_format_exception(status)); 423 acpi_gbl_method_executing = FALSE; 424 ACPI_FREE(pathname); 425 426 /* Ignore status from method execution */ 427 428 status = AE_OK; 429 430 /* Update count, check if we have executed enough methods */ 431 432 info->count++; 433 if (info->count >= info->max_count) { 434 status = AE_CTRL_TERMINATE; 435 } 436 437 return (status); 438 } 439 440 /******************************************************************************* 441 * 442 * FUNCTION: acpi_db_evaluate_predefined_names 443 * 444 * PARAMETERS: None 445 * 446 * RETURN: None 447 * 448 * DESCRIPTION: Namespace batch execution. Execute predefined names in the 449 * namespace, up to the max count, if specified. 450 * 451 ******************************************************************************/ 452 453 void acpi_db_evaluate_predefined_names(void) 454 { 455 struct acpi_db_execute_walk info; 456 457 info.count = 0; 458 info.max_count = ACPI_UINT32_MAX; 459 460 /* Search all nodes in namespace */ 461 462 (void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 463 ACPI_UINT32_MAX, acpi_db_walk_for_execute, 464 NULL, (void *)&info, NULL); 465 466 acpi_os_printf("Evaluated %u predefined names in the namespace\n", 467 info.count); 468 } 469