]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: psargs - Parse AML opcode arguments | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
8 | * Copyright (C) 2000 - 2005, R. Byron Moore | |
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 | ||
45 | #include <acpi/acpi.h> | |
46 | #include <acpi/acparser.h> | |
47 | #include <acpi/amlcode.h> | |
48 | #include <acpi/acnamesp.h> | |
49 | ||
50 | #define _COMPONENT ACPI_PARSER | |
51 | ACPI_MODULE_NAME ("psargs") | |
52 | ||
53 | ||
54 | /******************************************************************************* | |
55 | * | |
56 | * FUNCTION: acpi_ps_get_next_package_length | |
57 | * | |
58 | * PARAMETERS: parser_state - Current parser state object | |
59 | * | |
60 | * RETURN: Decoded package length. On completion, the AML pointer points | |
61 | * past the length byte or bytes. | |
62 | * | |
63 | * DESCRIPTION: Decode and return a package length field | |
64 | * | |
65 | ******************************************************************************/ | |
66 | ||
67 | u32 | |
68 | acpi_ps_get_next_package_length ( | |
69 | struct acpi_parse_state *parser_state) | |
70 | { | |
71 | u32 encoded_length; | |
72 | u32 length = 0; | |
73 | ||
74 | ||
75 | ACPI_FUNCTION_TRACE ("ps_get_next_package_length"); | |
76 | ||
77 | ||
78 | encoded_length = (u32) ACPI_GET8 (parser_state->aml); | |
79 | parser_state->aml++; | |
80 | ||
81 | ||
82 | switch (encoded_length >> 6) /* bits 6-7 contain encoding scheme */ { | |
83 | case 0: /* 1-byte encoding (bits 0-5) */ | |
84 | ||
85 | length = (encoded_length & 0x3F); | |
86 | break; | |
87 | ||
88 | ||
89 | case 1: /* 2-byte encoding (next byte + bits 0-3) */ | |
90 | ||
91 | length = ((ACPI_GET8 (parser_state->aml) << 04) | | |
92 | (encoded_length & 0x0F)); | |
93 | parser_state->aml++; | |
94 | break; | |
95 | ||
96 | ||
97 | case 2: /* 3-byte encoding (next 2 bytes + bits 0-3) */ | |
98 | ||
99 | length = ((ACPI_GET8 (parser_state->aml + 1) << 12) | | |
100 | (ACPI_GET8 (parser_state->aml) << 04) | | |
101 | (encoded_length & 0x0F)); | |
102 | parser_state->aml += 2; | |
103 | break; | |
104 | ||
105 | ||
106 | case 3: /* 4-byte encoding (next 3 bytes + bits 0-3) */ | |
107 | ||
108 | length = ((ACPI_GET8 (parser_state->aml + 2) << 20) | | |
109 | (ACPI_GET8 (parser_state->aml + 1) << 12) | | |
110 | (ACPI_GET8 (parser_state->aml) << 04) | | |
111 | (encoded_length & 0x0F)); | |
112 | parser_state->aml += 3; | |
113 | break; | |
114 | ||
115 | default: | |
116 | ||
117 | /* Can't get here, only 2 bits / 4 cases */ | |
118 | break; | |
119 | } | |
120 | ||
121 | return_VALUE (length); | |
122 | } | |
123 | ||
124 | ||
125 | /******************************************************************************* | |
126 | * | |
127 | * FUNCTION: acpi_ps_get_next_package_end | |
128 | * | |
129 | * PARAMETERS: parser_state - Current parser state object | |
130 | * | |
131 | * RETURN: Pointer to end-of-package +1 | |
132 | * | |
133 | * DESCRIPTION: Get next package length and return a pointer past the end of | |
134 | * the package. Consumes the package length field | |
135 | * | |
136 | ******************************************************************************/ | |
137 | ||
138 | u8 * | |
139 | acpi_ps_get_next_package_end ( | |
140 | struct acpi_parse_state *parser_state) | |
141 | { | |
142 | u8 *start = parser_state->aml; | |
143 | acpi_native_uint length; | |
144 | ||
145 | ||
146 | ACPI_FUNCTION_TRACE ("ps_get_next_package_end"); | |
147 | ||
148 | ||
149 | /* Function below changes parser_state->Aml */ | |
150 | ||
151 | length = (acpi_native_uint) acpi_ps_get_next_package_length (parser_state); | |
152 | ||
153 | return_PTR (start + length); /* end of package */ | |
154 | } | |
155 | ||
156 | ||
157 | /******************************************************************************* | |
158 | * | |
159 | * FUNCTION: acpi_ps_get_next_namestring | |
160 | * | |
161 | * PARAMETERS: parser_state - Current parser state object | |
162 | * | |
163 | * RETURN: Pointer to the start of the name string (pointer points into | |
164 | * the AML. | |
165 | * | |
166 | * DESCRIPTION: Get next raw namestring within the AML stream. Handles all name | |
167 | * prefix characters. Set parser state to point past the string. | |
168 | * (Name is consumed from the AML.) | |
169 | * | |
170 | ******************************************************************************/ | |
171 | ||
172 | char * | |
173 | acpi_ps_get_next_namestring ( | |
174 | struct acpi_parse_state *parser_state) | |
175 | { | |
176 | u8 *start = parser_state->aml; | |
177 | u8 *end = parser_state->aml; | |
178 | ||
179 | ||
180 | ACPI_FUNCTION_TRACE ("ps_get_next_namestring"); | |
181 | ||
182 | ||
183 | /* Handle multiple prefix characters */ | |
184 | ||
185 | while (acpi_ps_is_prefix_char (ACPI_GET8 (end))) { | |
186 | /* Include prefix '\\' or '^' */ | |
187 | ||
188 | end++; | |
189 | } | |
190 | ||
191 | /* Decode the path */ | |
192 | ||
193 | switch (ACPI_GET8 (end)) { | |
194 | case 0: | |
195 | ||
196 | /* null_name */ | |
197 | ||
198 | if (end == start) { | |
199 | start = NULL; | |
200 | } | |
201 | end++; | |
202 | break; | |
203 | ||
204 | case AML_DUAL_NAME_PREFIX: | |
205 | ||
206 | /* Two name segments */ | |
207 | ||
208 | end += 1 + (2 * ACPI_NAME_SIZE); | |
209 | break; | |
210 | ||
211 | case AML_MULTI_NAME_PREFIX_OP: | |
212 | ||
213 | /* Multiple name segments, 4 chars each */ | |
214 | ||
215 | end += 2 + ((acpi_size) ACPI_GET8 (end + 1) * ACPI_NAME_SIZE); | |
216 | break; | |
217 | ||
218 | default: | |
219 | ||
220 | /* Single name segment */ | |
221 | ||
222 | end += ACPI_NAME_SIZE; | |
223 | break; | |
224 | } | |
225 | ||
226 | parser_state->aml = (u8*) end; | |
227 | return_PTR ((char *) start); | |
228 | } | |
229 | ||
230 | ||
231 | /******************************************************************************* | |
232 | * | |
233 | * FUNCTION: acpi_ps_get_next_namepath | |
234 | * | |
235 | * PARAMETERS: parser_state - Current parser state object | |
236 | * Arg - Where the namepath will be stored | |
237 | * arg_count - If the namepath points to a control method | |
238 | * the method's argument is returned here. | |
239 | * method_call - Whether the namepath can possibly be the | |
240 | * start of a method call | |
241 | * | |
242 | * RETURN: Status | |
243 | * | |
244 | * DESCRIPTION: Get next name (if method call, return # of required args). | |
245 | * Names are looked up in the internal namespace to determine | |
246 | * if the name represents a control method. If a method | |
247 | * is found, the number of arguments to the method is returned. | |
248 | * This information is critical for parsing to continue correctly. | |
249 | * | |
250 | ******************************************************************************/ | |
251 | ||
252 | acpi_status | |
253 | acpi_ps_get_next_namepath ( | |
254 | struct acpi_walk_state *walk_state, | |
255 | struct acpi_parse_state *parser_state, | |
256 | union acpi_parse_object *arg, | |
257 | u8 method_call) | |
258 | { | |
259 | char *path; | |
260 | union acpi_parse_object *name_op; | |
261 | acpi_status status = AE_OK; | |
262 | union acpi_operand_object *method_desc; | |
263 | struct acpi_namespace_node *node; | |
264 | union acpi_generic_state scope_info; | |
265 | ||
266 | ||
267 | ACPI_FUNCTION_TRACE ("ps_get_next_namepath"); | |
268 | ||
269 | ||
270 | path = acpi_ps_get_next_namestring (parser_state); | |
271 | ||
272 | /* Null path case is allowed */ | |
273 | ||
274 | if (path) { | |
275 | /* | |
276 | * Lookup the name in the internal namespace | |
277 | */ | |
278 | scope_info.scope.node = NULL; | |
279 | node = parser_state->start_node; | |
280 | if (node) { | |
281 | scope_info.scope.node = node; | |
282 | } | |
283 | ||
284 | /* | |
285 | * Lookup object. We don't want to add anything new to the namespace | |
286 | * here, however. So we use MODE_EXECUTE. Allow searching of the | |
287 | * parent tree, but don't open a new scope -- we just want to lookup the | |
288 | * object (MUST BE mode EXECUTE to perform upsearch) | |
289 | */ | |
290 | status = acpi_ns_lookup (&scope_info, path, ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, | |
291 | ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, NULL, &node); | |
292 | if (ACPI_SUCCESS (status) && method_call) { | |
293 | if (node->type == ACPI_TYPE_METHOD) { | |
294 | /* | |
295 | * This name is actually a control method invocation | |
296 | */ | |
297 | method_desc = acpi_ns_get_attached_object (node); | |
298 | ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, | |
299 | "Control Method - %p Desc %p Path=%p\n", | |
300 | node, method_desc, path)); | |
301 | ||
302 | name_op = acpi_ps_alloc_op (AML_INT_NAMEPATH_OP); | |
303 | if (!name_op) { | |
304 | return_ACPI_STATUS (AE_NO_MEMORY); | |
305 | } | |
306 | ||
307 | /* Change arg into a METHOD CALL and attach name to it */ | |
308 | ||
309 | acpi_ps_init_op (arg, AML_INT_METHODCALL_OP); | |
310 | name_op->common.value.name = path; | |
311 | ||
312 | /* Point METHODCALL/NAME to the METHOD Node */ | |
313 | ||
314 | name_op->common.node = node; | |
315 | acpi_ps_append_arg (arg, name_op); | |
316 | ||
317 | if (!method_desc) { | |
318 | ACPI_REPORT_ERROR (( | |
319 | "ps_get_next_namepath: Control Method %p has no attached object\n", | |
320 | node)); | |
321 | return_ACPI_STATUS (AE_AML_INTERNAL); | |
322 | } | |
323 | ||
324 | ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, | |
325 | "Control Method - %p Args %X\n", | |
326 | node, method_desc->method.param_count)); | |
327 | ||
328 | /* Get the number of arguments to expect */ | |
329 | ||
330 | walk_state->arg_count = method_desc->method.param_count; | |
331 | return_ACPI_STATUS (AE_OK); | |
332 | } | |
333 | ||
334 | /* | |
335 | * Else this is normal named object reference. | |
336 | * Just init the NAMEPATH object with the pathname. | |
337 | * (See code below) | |
338 | */ | |
339 | } | |
340 | ||
341 | if (ACPI_FAILURE (status)) { | |
342 | /* | |
343 | * 1) Any error other than NOT_FOUND is always severe | |
344 | * 2) NOT_FOUND is only important if we are executing a method. | |
345 | * 3) If executing a cond_ref_of opcode, NOT_FOUND is ok. | |
346 | */ | |
347 | if ((((walk_state->parse_flags & ACPI_PARSE_MODE_MASK) == ACPI_PARSE_EXECUTE) && | |
348 | (status == AE_NOT_FOUND) && | |
349 | (walk_state->op->common.aml_opcode != AML_COND_REF_OF_OP)) || | |
350 | ||
351 | (status != AE_NOT_FOUND)) { | |
352 | ACPI_REPORT_NSERROR (path, status); | |
353 | ||
354 | acpi_os_printf ("search_node %p start_node %p return_node %p\n", | |
355 | scope_info.scope.node, parser_state->start_node, node); | |
356 | ||
357 | ||
358 | } | |
359 | else { | |
360 | /* | |
361 | * We got a NOT_FOUND during table load or we encountered | |
362 | * a cond_ref_of(x) where the target does not exist. | |
363 | * -- either case is ok | |
364 | */ | |
365 | status = AE_OK; | |
366 | } | |
367 | } | |
368 | } | |
369 | ||
370 | /* | |
371 | * Regardless of success/failure above, | |
372 | * Just initialize the Op with the pathname. | |
373 | */ | |
374 | acpi_ps_init_op (arg, AML_INT_NAMEPATH_OP); | |
375 | arg->common.value.name = path; | |
376 | ||
377 | return_ACPI_STATUS (status); | |
378 | } | |
379 | ||
380 | ||
381 | /******************************************************************************* | |
382 | * | |
383 | * FUNCTION: acpi_ps_get_next_simple_arg | |
384 | * | |
385 | * PARAMETERS: parser_state - Current parser state object | |
386 | * arg_type - The argument type (AML_*_ARG) | |
387 | * Arg - Where the argument is returned | |
388 | * | |
389 | * RETURN: None | |
390 | * | |
391 | * DESCRIPTION: Get the next simple argument (constant, string, or namestring) | |
392 | * | |
393 | ******************************************************************************/ | |
394 | ||
395 | void | |
396 | acpi_ps_get_next_simple_arg ( | |
397 | struct acpi_parse_state *parser_state, | |
398 | u32 arg_type, | |
399 | union acpi_parse_object *arg) | |
400 | { | |
401 | ||
402 | ACPI_FUNCTION_TRACE_U32 ("ps_get_next_simple_arg", arg_type); | |
403 | ||
404 | ||
405 | switch (arg_type) { | |
406 | case ARGP_BYTEDATA: | |
407 | ||
408 | acpi_ps_init_op (arg, AML_BYTE_OP); | |
409 | arg->common.value.integer = (u32) ACPI_GET8 (parser_state->aml); | |
410 | parser_state->aml++; | |
411 | break; | |
412 | ||
413 | ||
414 | case ARGP_WORDDATA: | |
415 | ||
416 | acpi_ps_init_op (arg, AML_WORD_OP); | |
417 | ||
418 | /* Get 2 bytes from the AML stream */ | |
419 | ||
420 | ACPI_MOVE_16_TO_32 (&arg->common.value.integer, parser_state->aml); | |
421 | parser_state->aml += 2; | |
422 | break; | |
423 | ||
424 | ||
425 | case ARGP_DWORDDATA: | |
426 | ||
427 | acpi_ps_init_op (arg, AML_DWORD_OP); | |
428 | ||
429 | /* Get 4 bytes from the AML stream */ | |
430 | ||
431 | ACPI_MOVE_32_TO_32 (&arg->common.value.integer, parser_state->aml); | |
432 | parser_state->aml += 4; | |
433 | break; | |
434 | ||
435 | ||
436 | case ARGP_QWORDDATA: | |
437 | ||
438 | acpi_ps_init_op (arg, AML_QWORD_OP); | |
439 | ||
440 | /* Get 8 bytes from the AML stream */ | |
441 | ||
442 | ACPI_MOVE_64_TO_64 (&arg->common.value.integer, parser_state->aml); | |
443 | parser_state->aml += 8; | |
444 | break; | |
445 | ||
446 | ||
447 | case ARGP_CHARLIST: | |
448 | ||
449 | acpi_ps_init_op (arg, AML_STRING_OP); | |
450 | arg->common.value.string = (char *) parser_state->aml; | |
451 | ||
452 | while (ACPI_GET8 (parser_state->aml) != '\0') { | |
453 | parser_state->aml++; | |
454 | } | |
455 | parser_state->aml++; | |
456 | break; | |
457 | ||
458 | ||
459 | case ARGP_NAME: | |
460 | case ARGP_NAMESTRING: | |
461 | ||
462 | acpi_ps_init_op (arg, AML_INT_NAMEPATH_OP); | |
463 | arg->common.value.name = acpi_ps_get_next_namestring (parser_state); | |
464 | break; | |
465 | ||
466 | ||
467 | default: | |
468 | ||
469 | ACPI_REPORT_ERROR (("Invalid arg_type %X\n", arg_type)); | |
470 | break; | |
471 | } | |
472 | ||
473 | return_VOID; | |
474 | } | |
475 | ||
476 | ||
477 | /******************************************************************************* | |
478 | * | |
479 | * FUNCTION: acpi_ps_get_next_field | |
480 | * | |
481 | * PARAMETERS: parser_state - Current parser state object | |
482 | * | |
483 | * RETURN: A newly allocated FIELD op | |
484 | * | |
485 | * DESCRIPTION: Get next field (named_field, reserved_field, or access_field) | |
486 | * | |
487 | ******************************************************************************/ | |
488 | ||
489 | union acpi_parse_object * | |
490 | acpi_ps_get_next_field ( | |
491 | struct acpi_parse_state *parser_state) | |
492 | { | |
493 | u32 aml_offset = (u32) ACPI_PTR_DIFF (parser_state->aml, | |
494 | parser_state->aml_start); | |
495 | union acpi_parse_object *field; | |
496 | u16 opcode; | |
497 | u32 name; | |
498 | ||
499 | ||
500 | ACPI_FUNCTION_TRACE ("ps_get_next_field"); | |
501 | ||
502 | ||
503 | /* determine field type */ | |
504 | ||
505 | switch (ACPI_GET8 (parser_state->aml)) { | |
506 | default: | |
507 | ||
508 | opcode = AML_INT_NAMEDFIELD_OP; | |
509 | break; | |
510 | ||
511 | case 0x00: | |
512 | ||
513 | opcode = AML_INT_RESERVEDFIELD_OP; | |
514 | parser_state->aml++; | |
515 | break; | |
516 | ||
517 | case 0x01: | |
518 | ||
519 | opcode = AML_INT_ACCESSFIELD_OP; | |
520 | parser_state->aml++; | |
521 | break; | |
522 | } | |
523 | ||
524 | ||
525 | /* Allocate a new field op */ | |
526 | ||
527 | field = acpi_ps_alloc_op (opcode); | |
528 | if (!field) { | |
529 | return_PTR (NULL); | |
530 | } | |
531 | ||
532 | field->common.aml_offset = aml_offset; | |
533 | ||
534 | /* Decode the field type */ | |
535 | ||
536 | switch (opcode) { | |
537 | case AML_INT_NAMEDFIELD_OP: | |
538 | ||
539 | /* Get the 4-character name */ | |
540 | ||
541 | ACPI_MOVE_32_TO_32 (&name, parser_state->aml); | |
542 | acpi_ps_set_name (field, name); | |
543 | parser_state->aml += ACPI_NAME_SIZE; | |
544 | ||
545 | /* Get the length which is encoded as a package length */ | |
546 | ||
547 | field->common.value.size = acpi_ps_get_next_package_length (parser_state); | |
548 | break; | |
549 | ||
550 | ||
551 | case AML_INT_RESERVEDFIELD_OP: | |
552 | ||
553 | /* Get the length which is encoded as a package length */ | |
554 | ||
555 | field->common.value.size = acpi_ps_get_next_package_length (parser_state); | |
556 | break; | |
557 | ||
558 | ||
559 | case AML_INT_ACCESSFIELD_OP: | |
560 | ||
561 | /* | |
562 | * Get access_type and access_attrib and merge into the field Op | |
563 | * access_type is first operand, access_attribute is second | |
564 | */ | |
565 | field->common.value.integer = (ACPI_GET8 (parser_state->aml) << 8); | |
566 | parser_state->aml++; | |
567 | field->common.value.integer |= ACPI_GET8 (parser_state->aml); | |
568 | parser_state->aml++; | |
569 | break; | |
570 | ||
571 | default: | |
572 | ||
573 | /* Opcode was set in previous switch */ | |
574 | break; | |
575 | } | |
576 | ||
577 | return_PTR (field); | |
578 | } | |
579 | ||
580 | ||
581 | /******************************************************************************* | |
582 | * | |
583 | * FUNCTION: acpi_ps_get_next_arg | |
584 | * | |
585 | * PARAMETERS: parser_state - Current parser state object | |
586 | * arg_type - The argument type (AML_*_ARG) | |
587 | * arg_count - If the argument points to a control method | |
588 | * the method's argument is returned here. | |
589 | * | |
590 | * RETURN: Status, and an op object containing the next argument. | |
591 | * | |
592 | * DESCRIPTION: Get next argument (including complex list arguments that require | |
593 | * pushing the parser stack) | |
594 | * | |
595 | ******************************************************************************/ | |
596 | ||
597 | acpi_status | |
598 | acpi_ps_get_next_arg ( | |
599 | struct acpi_walk_state *walk_state, | |
600 | struct acpi_parse_state *parser_state, | |
601 | u32 arg_type, | |
602 | union acpi_parse_object **return_arg) | |
603 | { | |
604 | union acpi_parse_object *arg = NULL; | |
605 | union acpi_parse_object *prev = NULL; | |
606 | union acpi_parse_object *field; | |
607 | u32 subop; | |
608 | acpi_status status = AE_OK; | |
609 | ||
610 | ||
611 | ACPI_FUNCTION_TRACE_PTR ("ps_get_next_arg", parser_state); | |
612 | ||
613 | ||
614 | switch (arg_type) { | |
615 | case ARGP_BYTEDATA: | |
616 | case ARGP_WORDDATA: | |
617 | case ARGP_DWORDDATA: | |
618 | case ARGP_CHARLIST: | |
619 | case ARGP_NAME: | |
620 | case ARGP_NAMESTRING: | |
621 | ||
622 | /* constants, strings, and namestrings are all the same size */ | |
623 | ||
624 | arg = acpi_ps_alloc_op (AML_BYTE_OP); | |
625 | if (!arg) { | |
626 | return_ACPI_STATUS (AE_NO_MEMORY); | |
627 | } | |
628 | acpi_ps_get_next_simple_arg (parser_state, arg_type, arg); | |
629 | break; | |
630 | ||
631 | ||
632 | case ARGP_PKGLENGTH: | |
633 | ||
634 | /* Package length, nothing returned */ | |
635 | ||
636 | parser_state->pkg_end = acpi_ps_get_next_package_end (parser_state); | |
637 | break; | |
638 | ||
639 | ||
640 | case ARGP_FIELDLIST: | |
641 | ||
642 | if (parser_state->aml < parser_state->pkg_end) { | |
643 | /* Non-empty list */ | |
644 | ||
645 | while (parser_state->aml < parser_state->pkg_end) { | |
646 | field = acpi_ps_get_next_field (parser_state); | |
647 | if (!field) { | |
648 | return_ACPI_STATUS (AE_NO_MEMORY); | |
649 | } | |
650 | ||
651 | if (prev) { | |
652 | prev->common.next = field; | |
653 | } | |
654 | else { | |
655 | arg = field; | |
656 | } | |
657 | ||
658 | prev = field; | |
659 | } | |
660 | ||
661 | /* Skip to End of byte data */ | |
662 | ||
663 | parser_state->aml = parser_state->pkg_end; | |
664 | } | |
665 | break; | |
666 | ||
667 | ||
668 | case ARGP_BYTELIST: | |
669 | ||
670 | if (parser_state->aml < parser_state->pkg_end) { | |
671 | /* Non-empty list */ | |
672 | ||
673 | arg = acpi_ps_alloc_op (AML_INT_BYTELIST_OP); | |
674 | if (!arg) { | |
675 | return_ACPI_STATUS (AE_NO_MEMORY); | |
676 | } | |
677 | ||
678 | /* Fill in bytelist data */ | |
679 | ||
680 | arg->common.value.size = (u32) ACPI_PTR_DIFF (parser_state->pkg_end, | |
681 | parser_state->aml); | |
682 | arg->named.data = parser_state->aml; | |
683 | ||
684 | /* Skip to End of byte data */ | |
685 | ||
686 | parser_state->aml = parser_state->pkg_end; | |
687 | } | |
688 | break; | |
689 | ||
690 | ||
691 | case ARGP_TARGET: | |
692 | case ARGP_SUPERNAME: | |
693 | case ARGP_SIMPLENAME: | |
694 | ||
695 | subop = acpi_ps_peek_opcode (parser_state); | |
696 | if (subop == 0 || | |
697 | acpi_ps_is_leading_char (subop) || | |
698 | acpi_ps_is_prefix_char (subop)) { | |
699 | /* null_name or name_string */ | |
700 | ||
701 | arg = acpi_ps_alloc_op (AML_INT_NAMEPATH_OP); | |
702 | if (!arg) { | |
703 | return_ACPI_STATUS (AE_NO_MEMORY); | |
704 | } | |
705 | ||
706 | status = acpi_ps_get_next_namepath (walk_state, parser_state, arg, 0); | |
707 | } | |
708 | else { | |
709 | /* single complex argument, nothing returned */ | |
710 | ||
711 | walk_state->arg_count = 1; | |
712 | } | |
713 | break; | |
714 | ||
715 | ||
716 | case ARGP_DATAOBJ: | |
717 | case ARGP_TERMARG: | |
718 | ||
719 | /* single complex argument, nothing returned */ | |
720 | ||
721 | walk_state->arg_count = 1; | |
722 | break; | |
723 | ||
724 | ||
725 | case ARGP_DATAOBJLIST: | |
726 | case ARGP_TERMLIST: | |
727 | case ARGP_OBJLIST: | |
728 | ||
729 | if (parser_state->aml < parser_state->pkg_end) { | |
730 | /* non-empty list of variable arguments, nothing returned */ | |
731 | ||
732 | walk_state->arg_count = ACPI_VAR_ARGS; | |
733 | } | |
734 | break; | |
735 | ||
736 | ||
737 | default: | |
738 | ||
739 | ACPI_REPORT_ERROR (("Invalid arg_type: %X\n", arg_type)); | |
740 | status = AE_AML_OPERAND_TYPE; | |
741 | break; | |
742 | } | |
743 | ||
744 | *return_arg = arg; | |
745 | return_ACPI_STATUS (status); | |
746 | } |