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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: exconvrt - Object conversion routines | |
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/acinterp.h> | |
47 | #include <acpi/amlcode.h> | |
48 | ||
49 | ||
50 | #define _COMPONENT ACPI_EXECUTER | |
51 | ACPI_MODULE_NAME ("exconvrt") | |
52 | ||
44f6c012 RM |
53 | /* Local prototypes */ |
54 | ||
55 | static u32 | |
56 | acpi_ex_convert_to_ascii ( | |
57 | acpi_integer integer, | |
58 | u16 base, | |
59 | u8 *string, | |
60 | u8 max_length); | |
61 | ||
1da177e4 LT |
62 | |
63 | /******************************************************************************* | |
64 | * | |
65 | * FUNCTION: acpi_ex_convert_to_integer | |
66 | * | |
67 | * PARAMETERS: obj_desc - Object to be converted. Must be an | |
68 | * Integer, Buffer, or String | |
69 | * result_desc - Where the new Integer object is returned | |
70 | * Flags - Used for string conversion | |
71 | * | |
72 | * RETURN: Status | |
73 | * | |
74 | * DESCRIPTION: Convert an ACPI Object to an integer. | |
75 | * | |
76 | ******************************************************************************/ | |
77 | ||
78 | acpi_status | |
79 | acpi_ex_convert_to_integer ( | |
80 | union acpi_operand_object *obj_desc, | |
81 | union acpi_operand_object **result_desc, | |
82 | u32 flags) | |
83 | { | |
84 | union acpi_operand_object *return_desc; | |
85 | u8 *pointer; | |
86 | acpi_integer result; | |
87 | u32 i; | |
88 | u32 count; | |
89 | acpi_status status; | |
90 | ||
91 | ||
92 | ACPI_FUNCTION_TRACE_PTR ("ex_convert_to_integer", obj_desc); | |
93 | ||
94 | ||
95 | switch (ACPI_GET_OBJECT_TYPE (obj_desc)) { | |
96 | case ACPI_TYPE_INTEGER: | |
97 | ||
98 | /* No conversion necessary */ | |
99 | ||
100 | *result_desc = obj_desc; | |
101 | return_ACPI_STATUS (AE_OK); | |
102 | ||
103 | case ACPI_TYPE_BUFFER: | |
104 | case ACPI_TYPE_STRING: | |
105 | ||
106 | /* Note: Takes advantage of common buffer/string fields */ | |
107 | ||
108 | pointer = obj_desc->buffer.pointer; | |
109 | count = obj_desc->buffer.length; | |
110 | break; | |
111 | ||
112 | default: | |
113 | return_ACPI_STATUS (AE_TYPE); | |
114 | } | |
115 | ||
116 | /* | |
117 | * Convert the buffer/string to an integer. Note that both buffers and | |
118 | * strings are treated as raw data - we don't convert ascii to hex for | |
119 | * strings. | |
120 | * | |
121 | * There are two terminating conditions for the loop: | |
122 | * 1) The size of an integer has been reached, or | |
123 | * 2) The end of the buffer or string has been reached | |
124 | */ | |
125 | result = 0; | |
126 | ||
44f6c012 RM |
127 | /* String conversion is different than Buffer conversion */ |
128 | ||
1da177e4 LT |
129 | switch (ACPI_GET_OBJECT_TYPE (obj_desc)) { |
130 | case ACPI_TYPE_STRING: | |
131 | ||
132 | /* | |
133 | * Convert string to an integer - for most cases, the string must be | |
134 | * hexadecimal as per the ACPI specification. The only exception (as | |
135 | * of ACPI 3.0) is that the to_integer() operator allows both decimal | |
136 | * and hexadecimal strings (hex prefixed with "0x"). | |
137 | */ | |
138 | status = acpi_ut_strtoul64 ((char *) pointer, flags, &result); | |
139 | if (ACPI_FAILURE (status)) { | |
140 | return_ACPI_STATUS (status); | |
141 | } | |
142 | break; | |
143 | ||
144 | ||
145 | case ACPI_TYPE_BUFFER: | |
146 | ||
147 | /* Check for zero-length buffer */ | |
148 | ||
149 | if (!count) { | |
150 | return_ACPI_STATUS (AE_AML_BUFFER_LIMIT); | |
151 | } | |
152 | ||
153 | /* Transfer no more than an integer's worth of data */ | |
154 | ||
155 | if (count > acpi_gbl_integer_byte_width) { | |
156 | count = acpi_gbl_integer_byte_width; | |
157 | } | |
158 | ||
159 | /* | |
160 | * Convert buffer to an integer - we simply grab enough raw data | |
161 | * from the buffer to fill an integer | |
162 | */ | |
163 | for (i = 0; i < count; i++) { | |
164 | /* | |
165 | * Get next byte and shift it into the Result. | |
166 | * Little endian is used, meaning that the first byte of the buffer | |
167 | * is the LSB of the integer | |
168 | */ | |
169 | result |= (((acpi_integer) pointer[i]) << (i * 8)); | |
170 | } | |
171 | break; | |
172 | ||
173 | ||
174 | default: | |
175 | /* No other types can get here */ | |
176 | break; | |
177 | } | |
178 | ||
44f6c012 RM |
179 | /* Create a new integer */ |
180 | ||
1da177e4 LT |
181 | return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER); |
182 | if (!return_desc) { | |
183 | return_ACPI_STATUS (AE_NO_MEMORY); | |
184 | } | |
185 | ||
186 | /* Save the Result */ | |
187 | ||
188 | return_desc->integer.value = result; | |
189 | acpi_ex_truncate_for32bit_table (return_desc); | |
190 | *result_desc = return_desc; | |
191 | return_ACPI_STATUS (AE_OK); | |
192 | } | |
193 | ||
194 | ||
195 | /******************************************************************************* | |
196 | * | |
197 | * FUNCTION: acpi_ex_convert_to_buffer | |
198 | * | |
199 | * PARAMETERS: obj_desc - Object to be converted. Must be an | |
200 | * Integer, Buffer, or String | |
201 | * result_desc - Where the new buffer object is returned | |
202 | * | |
203 | * RETURN: Status | |
204 | * | |
205 | * DESCRIPTION: Convert an ACPI Object to a Buffer | |
206 | * | |
207 | ******************************************************************************/ | |
208 | ||
209 | acpi_status | |
210 | acpi_ex_convert_to_buffer ( | |
211 | union acpi_operand_object *obj_desc, | |
212 | union acpi_operand_object **result_desc) | |
213 | { | |
214 | union acpi_operand_object *return_desc; | |
215 | u8 *new_buf; | |
216 | ||
217 | ||
218 | ACPI_FUNCTION_TRACE_PTR ("ex_convert_to_buffer", obj_desc); | |
219 | ||
220 | ||
221 | switch (ACPI_GET_OBJECT_TYPE (obj_desc)) { | |
222 | case ACPI_TYPE_BUFFER: | |
223 | ||
224 | /* No conversion necessary */ | |
225 | ||
226 | *result_desc = obj_desc; | |
227 | return_ACPI_STATUS (AE_OK); | |
228 | ||
229 | ||
230 | case ACPI_TYPE_INTEGER: | |
231 | ||
232 | /* | |
233 | * Create a new Buffer object. | |
234 | * Need enough space for one integer | |
235 | */ | |
236 | return_desc = acpi_ut_create_buffer_object (acpi_gbl_integer_byte_width); | |
237 | if (!return_desc) { | |
238 | return_ACPI_STATUS (AE_NO_MEMORY); | |
239 | } | |
240 | ||
241 | /* Copy the integer to the buffer, LSB first */ | |
242 | ||
243 | new_buf = return_desc->buffer.pointer; | |
244 | ACPI_MEMCPY (new_buf, | |
245 | &obj_desc->integer.value, | |
246 | acpi_gbl_integer_byte_width); | |
247 | break; | |
248 | ||
249 | ||
250 | case ACPI_TYPE_STRING: | |
251 | ||
252 | /* | |
253 | * Create a new Buffer object | |
254 | * Size will be the string length | |
255 | * | |
256 | * NOTE: Add one to the string length to include the null terminator. | |
257 | * The ACPI spec is unclear on this subject, but there is existing | |
258 | * ASL/AML code that depends on the null being transferred to the new | |
259 | * buffer. | |
260 | */ | |
44f6c012 RM |
261 | return_desc = acpi_ut_create_buffer_object ( |
262 | (acpi_size) obj_desc->string.length + 1); | |
1da177e4 LT |
263 | if (!return_desc) { |
264 | return_ACPI_STATUS (AE_NO_MEMORY); | |
265 | } | |
266 | ||
267 | /* Copy the string to the buffer */ | |
268 | ||
269 | new_buf = return_desc->buffer.pointer; | |
270 | ACPI_STRNCPY ((char *) new_buf, (char *) obj_desc->string.pointer, | |
271 | obj_desc->string.length); | |
272 | break; | |
273 | ||
274 | ||
275 | default: | |
276 | return_ACPI_STATUS (AE_TYPE); | |
277 | } | |
278 | ||
279 | /* Mark buffer initialized */ | |
280 | ||
281 | return_desc->common.flags |= AOPOBJ_DATA_VALID; | |
282 | *result_desc = return_desc; | |
283 | return_ACPI_STATUS (AE_OK); | |
284 | } | |
285 | ||
286 | ||
287 | /******************************************************************************* | |
288 | * | |
289 | * FUNCTION: acpi_ex_convert_to_ascii | |
290 | * | |
291 | * PARAMETERS: Integer - Value to be converted | |
292 | * Base - ACPI_STRING_DECIMAL or ACPI_STRING_HEX | |
293 | * String - Where the string is returned | |
294 | * data_width - Size of data item to be converted, in bytes | |
295 | * | |
296 | * RETURN: Actual string length | |
297 | * | |
298 | * DESCRIPTION: Convert an ACPI Integer to a hex or decimal string | |
299 | * | |
300 | ******************************************************************************/ | |
301 | ||
44f6c012 | 302 | static u32 |
1da177e4 LT |
303 | acpi_ex_convert_to_ascii ( |
304 | acpi_integer integer, | |
305 | u16 base, | |
306 | u8 *string, | |
307 | u8 data_width) | |
308 | { | |
309 | acpi_integer digit; | |
310 | acpi_native_uint i; | |
311 | acpi_native_uint j; | |
312 | acpi_native_uint k = 0; | |
313 | acpi_native_uint hex_length; | |
314 | acpi_native_uint decimal_length; | |
315 | u32 remainder; | |
316 | u8 supress_zeros; | |
317 | ||
318 | ||
319 | ACPI_FUNCTION_ENTRY (); | |
320 | ||
321 | ||
322 | switch (base) { | |
323 | case 10: | |
324 | ||
325 | /* Setup max length for the decimal number */ | |
326 | ||
327 | switch (data_width) { | |
328 | case 1: | |
329 | decimal_length = ACPI_MAX8_DECIMAL_DIGITS; | |
330 | break; | |
331 | ||
332 | case 4: | |
333 | decimal_length = ACPI_MAX32_DECIMAL_DIGITS; | |
334 | break; | |
335 | ||
336 | case 8: | |
337 | default: | |
338 | decimal_length = ACPI_MAX64_DECIMAL_DIGITS; | |
339 | break; | |
340 | } | |
341 | ||
342 | supress_zeros = TRUE; /* No leading zeros */ | |
343 | remainder = 0; | |
344 | ||
345 | for (i = decimal_length; i > 0; i--) { | |
346 | /* Divide by nth factor of 10 */ | |
347 | ||
348 | digit = integer; | |
349 | for (j = 0; j < i; j++) { | |
350 | (void) acpi_ut_short_divide (digit, 10, &digit, &remainder); | |
351 | } | |
352 | ||
353 | /* Handle leading zeros */ | |
354 | ||
355 | if (remainder != 0) { | |
356 | supress_zeros = FALSE; | |
357 | } | |
358 | ||
359 | if (!supress_zeros) { | |
360 | string[k] = (u8) (ACPI_ASCII_ZERO + remainder); | |
361 | k++; | |
362 | } | |
363 | } | |
364 | break; | |
365 | ||
366 | case 16: | |
367 | ||
44f6c012 | 368 | /* hex_length: 2 ascii hex chars per data byte */ |
1da177e4 | 369 | |
44f6c012 | 370 | hex_length = ACPI_MUL_2 (data_width); |
1da177e4 LT |
371 | for (i = 0, j = (hex_length-1); i < hex_length; i++, j--) { |
372 | /* Get one hex digit, most significant digits first */ | |
373 | ||
374 | string[k] = (u8) acpi_ut_hex_to_ascii_char (integer, ACPI_MUL_4 (j)); | |
375 | k++; | |
376 | } | |
377 | break; | |
378 | ||
379 | default: | |
380 | return (0); | |
381 | } | |
382 | ||
383 | /* | |
384 | * Since leading zeros are supressed, we must check for the case where | |
385 | * the integer equals 0 | |
386 | * | |
387 | * Finally, null terminate the string and return the length | |
388 | */ | |
389 | if (!k) { | |
390 | string [0] = ACPI_ASCII_ZERO; | |
391 | k = 1; | |
392 | } | |
393 | ||
394 | string [k] = 0; | |
395 | return ((u32) k); | |
396 | } | |
397 | ||
398 | ||
399 | /******************************************************************************* | |
400 | * | |
401 | * FUNCTION: acpi_ex_convert_to_string | |
402 | * | |
403 | * PARAMETERS: obj_desc - Object to be converted. Must be an | |
404 | * Integer, Buffer, or String | |
405 | * result_desc - Where the string object is returned | |
406 | * Type - String flags (base and conversion type) | |
407 | * | |
408 | * RETURN: Status | |
409 | * | |
410 | * DESCRIPTION: Convert an ACPI Object to a string | |
411 | * | |
412 | ******************************************************************************/ | |
413 | ||
414 | acpi_status | |
415 | acpi_ex_convert_to_string ( | |
416 | union acpi_operand_object *obj_desc, | |
417 | union acpi_operand_object **result_desc, | |
418 | u32 type) | |
419 | { | |
420 | union acpi_operand_object *return_desc; | |
421 | u8 *new_buf; | |
422 | u32 i; | |
423 | u32 string_length = 0; | |
424 | u16 base = 16; | |
425 | u8 separator = ','; | |
426 | ||
427 | ||
428 | ACPI_FUNCTION_TRACE_PTR ("ex_convert_to_string", obj_desc); | |
429 | ||
430 | ||
431 | switch (ACPI_GET_OBJECT_TYPE (obj_desc)) { | |
432 | case ACPI_TYPE_STRING: | |
433 | ||
434 | /* No conversion necessary */ | |
435 | ||
436 | *result_desc = obj_desc; | |
437 | return_ACPI_STATUS (AE_OK); | |
438 | ||
439 | ||
440 | case ACPI_TYPE_INTEGER: | |
441 | ||
442 | switch (type) { | |
443 | case ACPI_EXPLICIT_CONVERT_DECIMAL: | |
444 | ||
445 | /* Make room for maximum decimal number */ | |
446 | ||
447 | string_length = ACPI_MAX_DECIMAL_DIGITS; | |
448 | base = 10; | |
449 | break; | |
450 | ||
451 | default: | |
452 | ||
453 | /* Two hex string characters for each integer byte */ | |
454 | ||
455 | string_length = ACPI_MUL_2 (acpi_gbl_integer_byte_width); | |
456 | break; | |
457 | } | |
458 | ||
459 | /* | |
460 | * Create a new String | |
461 | * Need enough space for one ASCII integer (plus null terminator) | |
462 | */ | |
463 | return_desc = acpi_ut_create_string_object ((acpi_size) string_length); | |
464 | if (!return_desc) { | |
465 | return_ACPI_STATUS (AE_NO_MEMORY); | |
466 | } | |
467 | ||
468 | new_buf = return_desc->buffer.pointer; | |
469 | ||
470 | /* Convert integer to string */ | |
471 | ||
472 | string_length = acpi_ex_convert_to_ascii (obj_desc->integer.value, base, | |
473 | new_buf, acpi_gbl_integer_byte_width); | |
474 | ||
475 | /* Null terminate at the correct place */ | |
476 | ||
477 | return_desc->string.length = string_length; | |
478 | new_buf [string_length] = 0; | |
479 | break; | |
480 | ||
481 | ||
482 | case ACPI_TYPE_BUFFER: | |
483 | ||
484 | /* Setup string length, base, and separator */ | |
485 | ||
486 | switch (type) { | |
44f6c012 | 487 | case ACPI_EXPLICIT_CONVERT_DECIMAL: /* Used by to_decimal_string */ |
1da177e4 LT |
488 | /* |
489 | * From ACPI: "If Data is a buffer, it is converted to a string of | |
490 | * decimal values separated by commas." | |
491 | */ | |
492 | base = 10; | |
493 | ||
494 | /* | |
495 | * Calculate the final string length. Individual string values | |
496 | * are variable length (include separator for each) | |
497 | */ | |
498 | for (i = 0; i < obj_desc->buffer.length; i++) { | |
499 | if (obj_desc->buffer.pointer[i] >= 100) { | |
500 | string_length += 4; | |
501 | } | |
502 | else if (obj_desc->buffer.pointer[i] >= 10) { | |
503 | string_length += 3; | |
504 | } | |
505 | else { | |
506 | string_length += 2; | |
507 | } | |
508 | } | |
509 | break; | |
510 | ||
511 | case ACPI_IMPLICIT_CONVERT_HEX: | |
512 | /* | |
513 | * From the ACPI spec: | |
514 | *"The entire contents of the buffer are converted to a string of | |
515 | * two-character hexadecimal numbers, each separated by a space." | |
516 | */ | |
517 | separator = ' '; | |
518 | string_length = (obj_desc->buffer.length * 3); | |
519 | break; | |
520 | ||
44f6c012 | 521 | case ACPI_EXPLICIT_CONVERT_HEX: /* Used by to_hex_string */ |
1da177e4 LT |
522 | /* |
523 | * From ACPI: "If Data is a buffer, it is converted to a string of | |
524 | * hexadecimal values separated by commas." | |
525 | */ | |
526 | string_length = (obj_desc->buffer.length * 3); | |
527 | break; | |
528 | ||
529 | default: | |
530 | return_ACPI_STATUS (AE_BAD_PARAMETER); | |
531 | } | |
532 | ||
533 | /* | |
534 | * Perform the conversion. | |
535 | * (-1 because of extra separator included in string_length from above) | |
536 | */ | |
537 | string_length--; | |
538 | if (string_length > ACPI_MAX_STRING_CONVERSION) /* ACPI limit */ { | |
539 | return_ACPI_STATUS (AE_AML_STRING_LIMIT); | |
540 | } | |
541 | ||
44f6c012 RM |
542 | /* Create a new string object and string buffer */ |
543 | ||
1da177e4 LT |
544 | return_desc = acpi_ut_create_string_object ((acpi_size) string_length); |
545 | if (!return_desc) { | |
546 | return_ACPI_STATUS (AE_NO_MEMORY); | |
547 | } | |
548 | ||
549 | new_buf = return_desc->buffer.pointer; | |
550 | ||
551 | /* | |
552 | * Convert buffer bytes to hex or decimal values | |
553 | * (separated by commas or spaces) | |
554 | */ | |
555 | for (i = 0; i < obj_desc->buffer.length; i++) { | |
556 | new_buf += acpi_ex_convert_to_ascii ( | |
557 | (acpi_integer) obj_desc->buffer.pointer[i], base, | |
558 | new_buf, 1); | |
559 | *new_buf++ = separator; /* each separated by a comma or space */ | |
560 | } | |
561 | ||
44f6c012 RM |
562 | /* |
563 | * Null terminate the string | |
564 | * (overwrites final comma/space from above) | |
565 | */ | |
1da177e4 LT |
566 | new_buf--; |
567 | *new_buf = 0; | |
568 | break; | |
569 | ||
570 | default: | |
571 | return_ACPI_STATUS (AE_TYPE); | |
572 | } | |
573 | ||
574 | *result_desc = return_desc; | |
575 | return_ACPI_STATUS (AE_OK); | |
576 | } | |
577 | ||
578 | ||
579 | /******************************************************************************* | |
580 | * | |
581 | * FUNCTION: acpi_ex_convert_to_target_type | |
582 | * | |
583 | * PARAMETERS: destination_type - Current type of the destination | |
584 | * source_desc - Source object to be converted. | |
585 | * result_desc - Where the converted object is returned | |
586 | * walk_state - Current method state | |
587 | * | |
588 | * RETURN: Status | |
589 | * | |
590 | * DESCRIPTION: Implements "implicit conversion" rules for storing an object. | |
591 | * | |
592 | ******************************************************************************/ | |
593 | ||
594 | acpi_status | |
595 | acpi_ex_convert_to_target_type ( | |
596 | acpi_object_type destination_type, | |
597 | union acpi_operand_object *source_desc, | |
598 | union acpi_operand_object **result_desc, | |
599 | struct acpi_walk_state *walk_state) | |
600 | { | |
601 | acpi_status status = AE_OK; | |
602 | ||
603 | ||
604 | ACPI_FUNCTION_TRACE ("ex_convert_to_target_type"); | |
605 | ||
606 | ||
607 | /* Default behavior */ | |
608 | ||
609 | *result_desc = source_desc; | |
610 | ||
611 | /* | |
612 | * If required by the target, | |
613 | * perform implicit conversion on the source before we store it. | |
614 | */ | |
615 | switch (GET_CURRENT_ARG_TYPE (walk_state->op_info->runtime_args)) { | |
616 | case ARGI_SIMPLE_TARGET: | |
617 | case ARGI_FIXED_TARGET: | |
618 | case ARGI_INTEGER_REF: /* Handles Increment, Decrement cases */ | |
619 | ||
620 | switch (destination_type) { | |
621 | case ACPI_TYPE_LOCAL_REGION_FIELD: | |
622 | /* | |
623 | * Named field can always handle conversions | |
624 | */ | |
625 | break; | |
626 | ||
627 | default: | |
628 | /* No conversion allowed for these types */ | |
629 | ||
630 | if (destination_type != ACPI_GET_OBJECT_TYPE (source_desc)) { | |
631 | ACPI_DEBUG_PRINT ((ACPI_DB_INFO, | |
632 | "Explicit operator, will store (%s) over existing type (%s)\n", | |
633 | acpi_ut_get_object_type_name (source_desc), | |
634 | acpi_ut_get_type_name (destination_type))); | |
635 | status = AE_TYPE; | |
636 | } | |
637 | } | |
638 | break; | |
639 | ||
640 | ||
641 | case ARGI_TARGETREF: | |
642 | ||
643 | switch (destination_type) { | |
644 | case ACPI_TYPE_INTEGER: | |
645 | case ACPI_TYPE_BUFFER_FIELD: | |
646 | case ACPI_TYPE_LOCAL_BANK_FIELD: | |
647 | case ACPI_TYPE_LOCAL_INDEX_FIELD: | |
648 | /* | |
649 | * These types require an Integer operand. We can convert | |
650 | * a Buffer or a String to an Integer if necessary. | |
651 | */ | |
652 | status = acpi_ex_convert_to_integer (source_desc, result_desc, | |
653 | 16); | |
654 | break; | |
655 | ||
656 | ||
657 | case ACPI_TYPE_STRING: | |
1da177e4 LT |
658 | /* |
659 | * The operand must be a String. We can convert an | |
660 | * Integer or Buffer if necessary | |
661 | */ | |
662 | status = acpi_ex_convert_to_string (source_desc, result_desc, | |
663 | ACPI_IMPLICIT_CONVERT_HEX); | |
664 | break; | |
665 | ||
666 | ||
667 | case ACPI_TYPE_BUFFER: | |
1da177e4 LT |
668 | /* |
669 | * The operand must be a Buffer. We can convert an | |
670 | * Integer or String if necessary | |
671 | */ | |
672 | status = acpi_ex_convert_to_buffer (source_desc, result_desc); | |
673 | break; | |
674 | ||
675 | ||
676 | default: | |
677 | ACPI_REPORT_ERROR (("Bad destination type during conversion: %X\n", | |
678 | destination_type)); | |
679 | status = AE_AML_INTERNAL; | |
680 | break; | |
681 | } | |
682 | break; | |
683 | ||
684 | ||
685 | case ARGI_REFERENCE: | |
686 | /* | |
687 | * create_xxxx_field cases - we are storing the field object into the name | |
688 | */ | |
689 | break; | |
690 | ||
691 | ||
692 | default: | |
693 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, | |
694 | "Unknown Target type ID 0x%X Op %s dest_type %s\n", | |
695 | GET_CURRENT_ARG_TYPE (walk_state->op_info->runtime_args), | |
696 | walk_state->op_info->name, acpi_ut_get_type_name (destination_type))); | |
697 | ||
698 | ACPI_REPORT_ERROR (("Bad Target Type (ARGI): %X\n", | |
699 | GET_CURRENT_ARG_TYPE (walk_state->op_info->runtime_args))) | |
700 | status = AE_AML_INTERNAL; | |
701 | } | |
702 | ||
703 | /* | |
704 | * Source-to-Target conversion semantics: | |
705 | * | |
706 | * If conversion to the target type cannot be performed, then simply | |
707 | * overwrite the target with the new object and type. | |
708 | */ | |
709 | if (status == AE_TYPE) { | |
710 | status = AE_OK; | |
711 | } | |
712 | ||
713 | return_ACPI_STATUS (status); | |
714 | } | |
715 | ||
716 |