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#define __DTEXPRESS_C__
45
46#include <contrib/dev/acpica/compiler/aslcompiler.h>
47#include <contrib/dev/acpica/compiler/dtcompiler.h>
48#include "dtparser.y.h"
49
50#define _COMPONENT DT_COMPILER
51 ACPI_MODULE_NAME ("dtexpress")
52
53
54/* Local prototypes */
55
56static void
57DtInsertLabelField (
58 DT_FIELD *Field);
59
60static DT_FIELD *
61DtLookupLabel (
62 char *Name);
63
64/* Global used for errors during parse and related functions */
65
66DT_FIELD *Gbl_CurrentField;
67
68
69/******************************************************************************
70 *
71 * FUNCTION: DtResolveIntegerExpression
72 *
73 * PARAMETERS: Field - Field object with Integer expression
74 * ReturnValue - Where the integer is returned
75 *
76 * RETURN: Status, and the resolved 64-bit integer value
77 *
78 * DESCRIPTION: Resolve an integer expression to a single value. Supports
79 * both integer constants and labels.
80 *
81 *****************************************************************************/
82
83ACPI_STATUS
84DtResolveIntegerExpression (
85 DT_FIELD *Field,
86 UINT64 *ReturnValue)
87{
88 UINT64 Result;
89
90
91 DbgPrint (ASL_DEBUG_OUTPUT, "Full Integer expression: %s\n",
92 Field->Value);
93
94 Gbl_CurrentField = Field;
95
96 Result = DtEvaluateExpression (Field->Value);
97 *ReturnValue = Result;
98 return (AE_OK);
99}
100
101
102/******************************************************************************
103 *
104 * FUNCTION: DtDoOperator
105 *
106 * PARAMETERS: LeftValue - First 64-bit operand
107 * Operator - Parse token for the operator (EXPOP_*)
108 * RightValue - Second 64-bit operand
109 *
110 * RETURN: 64-bit result of the requested operation
111 *
112 * DESCRIPTION: Perform the various 64-bit integer math functions
113 *
114 *****************************************************************************/
115
116UINT64
117DtDoOperator (
118 UINT64 LeftValue,
119 UINT32 Operator,
120 UINT64 RightValue)
121{
122 UINT64 Result;
123
124
125 /* Perform the requested operation */
126
127 switch (Operator)
128 {
129 case EXPOP_ONES_COMPLIMENT:
130 Result = ~RightValue;
131 break;
132
133 case EXPOP_LOGICAL_NOT:
134 Result = !RightValue;
135 break;
136
137 case EXPOP_MULTIPLY:
138 Result = LeftValue * RightValue;
139 break;
140
141 case EXPOP_DIVIDE:
142 if (!RightValue)
143 {
144 DtError (ASL_ERROR, ASL_MSG_DIVIDE_BY_ZERO,
145 Gbl_CurrentField, Gbl_CurrentField->Value);
146 return (0);
147 }
148 Result = LeftValue / RightValue;
149 break;
150
151 case EXPOP_MODULO:
152 if (!RightValue)
153 {
154 DtError (ASL_ERROR, ASL_MSG_DIVIDE_BY_ZERO,
155 Gbl_CurrentField, Gbl_CurrentField->Value);
156 return (0);
157 }
158 Result = LeftValue % RightValue;
159 break;
160
161 case EXPOP_ADD:
162 Result = LeftValue + RightValue;
163 break;
164
165 case EXPOP_SUBTRACT:
166 Result = LeftValue - RightValue;
167 break;
168
169 case EXPOP_SHIFT_RIGHT:
170 Result = LeftValue >> RightValue;
171 break;
172
173 case EXPOP_SHIFT_LEFT:
174 Result = LeftValue << RightValue;
175 break;
176
177 case EXPOP_LESS:
178 Result = LeftValue < RightValue;
179 break;
180
181 case EXPOP_GREATER:
182 Result = LeftValue > RightValue;
183 break;
184
185 case EXPOP_LESS_EQUAL:
186 Result = LeftValue <= RightValue;
187 break;
188
189 case EXPOP_GREATER_EQUAL:
190 Result = LeftValue >= RightValue;
191 break;
192
193 case EXPOP_EQUAL:
194 Result = LeftValue = RightValue;
195 break;
196
197 case EXPOP_NOT_EQUAL:
198 Result = LeftValue != RightValue;
199 break;
200
201 case EXPOP_AND:
202 Result = LeftValue & RightValue;
203 break;
204
205 case EXPOP_XOR:
206 Result = LeftValue ^ RightValue;
207 break;
208
209 case EXPOP_OR:
210 Result = LeftValue | RightValue;
211 break;
212
213 case EXPOP_LOGICAL_AND:
214 Result = LeftValue && RightValue;
215 break;
216
217 case EXPOP_LOGICAL_OR:
218 Result = LeftValue || RightValue;
219 break;
220
221 default:
222
223 /* Unknown operator */
224
225 DtFatal (ASL_MSG_INVALID_EXPRESSION,
226 Gbl_CurrentField, Gbl_CurrentField->Value);
227 return (0);
228 }
229
230 DbgPrint (ASL_DEBUG_OUTPUT,
231 "IntegerEval: %s (%8.8X%8.8X %s %8.8X%8.8X) = %8.8X%8.8X\n",
232 Gbl_CurrentField->Value,
233 ACPI_FORMAT_UINT64 (LeftValue),
234 DtGetOpName (Operator),
235 ACPI_FORMAT_UINT64 (RightValue),
236 ACPI_FORMAT_UINT64 (Result));
237
238 return (Result);
239}
240
241
242/******************************************************************************
243 *
244 * FUNCTION: DtResolveLabel
245 *
246 * PARAMETERS: LabelString - Contains the label
247 *
248 * RETURN: Table offset associated with the label
249 *
250 * DESCRIPTION: Lookup a lable and return its value.
251 *
252 *****************************************************************************/
253
254UINT64
255DtResolveLabel (
256 char *LabelString)
257{
258 DT_FIELD *LabelField;
259
260
261 DbgPrint (ASL_DEBUG_OUTPUT, "Resolve Label: %s\n", LabelString);
262
263 /* Resolve a label reference to an integer (table offset) */
264
265 if (*LabelString != '$')
266 {
267 return (0);
268 }
269
270 LabelField = DtLookupLabel (LabelString);
271 if (!LabelField)
272 {
273 DtError (ASL_ERROR, ASL_MSG_UNKNOWN_LABEL,
274 Gbl_CurrentField, LabelString);
275 return (0);
276 }
277
278 /* All we need from the label is the offset in the table */
279
280 DbgPrint (ASL_DEBUG_OUTPUT, "Resolved Label: 0x%8.8X\n",
281 LabelField->TableOffset);
282
283 return (LabelField->TableOffset);
284}
285
286
287/******************************************************************************
288 *
289 * FUNCTION: DtDetectAllLabels
290 *
291 * PARAMETERS: FieldList - Field object at start of generic list
292 *
293 * RETURN: None
294 *
295 * DESCRIPTION: Detect all labels in a list of "generic" opcodes (such as
296 * a UEFI table.) and insert them into the global label list.
297 *
298 *****************************************************************************/
299
300void
301DtDetectAllLabels (
302 DT_FIELD *FieldList)
303{
304 ACPI_DMTABLE_INFO *Info;
305 DT_FIELD *GenericField;
306 UINT32 TableOffset;
307
308
309 TableOffset = Gbl_CurrentTableOffset;
310 GenericField = FieldList;
311
312 /*
313 * Process all "Label:" fields within the parse tree. We need
314 * to know the offsets for all labels before we can compile
315 * the parse tree in order to handle forward references. Traverse
316 * tree and get/set all field lengths of all operators in order to
317 * determine the label offsets.
318 */
319 while (GenericField)
320 {
321 Info = DtGetGenericTableInfo (GenericField->Name);
322 if (Info)
323 {
324 /* Maintain table offsets */
325
326 GenericField->TableOffset = TableOffset;
327 TableOffset += DtGetFieldLength (GenericField, Info);
328
329 /* Insert all labels in the global label list */
330
331 if (Info->Opcode == ACPI_DMT_LABEL)
332 {
333 DtInsertLabelField (GenericField);
334 }
335 }
336
337 GenericField = GenericField->Next;
338 }
339}
340
341
342/******************************************************************************
343 *
344 * FUNCTION: DtInsertLabelField
345 *
346 * PARAMETERS: Field - Field object with Label to be inserted
347 *
348 * RETURN: None
349 *
350 * DESCRIPTION: Insert a label field into the global label list
351 *
352 *****************************************************************************/
353
354static void
355DtInsertLabelField (
356 DT_FIELD *Field)
357{
358
359 DbgPrint (ASL_DEBUG_OUTPUT,
360 "DtInsertLabelField: Found Label : %s at output table offset %X\n",
361 Field->Value, Field->TableOffset);
362
363 Field->NextLabel = Gbl_LabelList;
364 Gbl_LabelList = Field;
365}
366
367
368/******************************************************************************
369 *
370 * FUNCTION: DtLookupLabel
371 *
372 * PARAMETERS: Name - Label to be resolved
373 *
374 * RETURN: Field object associated with the label
375 *
376 * DESCRIPTION: Lookup a label in the global label list. Used during the
377 * resolution of integer expressions.
378 *
379 *****************************************************************************/
380
381static DT_FIELD *
382DtLookupLabel (
383 char *Name)
384{
385 DT_FIELD *LabelField;
386
387
388 /* Skip a leading $ */
389
390 if (*Name == '$')
391 {
392 Name++;
393 }
394
395 /* Search global list */
396
397 LabelField = Gbl_LabelList;
398 while (LabelField)
399 {
400 if (!ACPI_STRCMP (Name, LabelField->Value))
401 {
402 return (LabelField);
403 }
404 LabelField = LabelField->NextLabel;
405 }
406
407 return (NULL);
408}
| 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#define __DTEXPRESS_C__
45
46#include <contrib/dev/acpica/compiler/aslcompiler.h>
47#include <contrib/dev/acpica/compiler/dtcompiler.h>
48#include "dtparser.y.h"
49
50#define _COMPONENT DT_COMPILER
51 ACPI_MODULE_NAME ("dtexpress")
52
53
54/* Local prototypes */
55
56static void
57DtInsertLabelField (
58 DT_FIELD *Field);
59
60static DT_FIELD *
61DtLookupLabel (
62 char *Name);
63
64/* Global used for errors during parse and related functions */
65
66DT_FIELD *Gbl_CurrentField;
67
68
69/******************************************************************************
70 *
71 * FUNCTION: DtResolveIntegerExpression
72 *
73 * PARAMETERS: Field - Field object with Integer expression
74 * ReturnValue - Where the integer is returned
75 *
76 * RETURN: Status, and the resolved 64-bit integer value
77 *
78 * DESCRIPTION: Resolve an integer expression to a single value. Supports
79 * both integer constants and labels.
80 *
81 *****************************************************************************/
82
83ACPI_STATUS
84DtResolveIntegerExpression (
85 DT_FIELD *Field,
86 UINT64 *ReturnValue)
87{
88 UINT64 Result;
89
90
91 DbgPrint (ASL_DEBUG_OUTPUT, "Full Integer expression: %s\n",
92 Field->Value);
93
94 Gbl_CurrentField = Field;
95
96 Result = DtEvaluateExpression (Field->Value);
97 *ReturnValue = Result;
98 return (AE_OK);
99}
100
101
102/******************************************************************************
103 *
104 * FUNCTION: DtDoOperator
105 *
106 * PARAMETERS: LeftValue - First 64-bit operand
107 * Operator - Parse token for the operator (EXPOP_*)
108 * RightValue - Second 64-bit operand
109 *
110 * RETURN: 64-bit result of the requested operation
111 *
112 * DESCRIPTION: Perform the various 64-bit integer math functions
113 *
114 *****************************************************************************/
115
116UINT64
117DtDoOperator (
118 UINT64 LeftValue,
119 UINT32 Operator,
120 UINT64 RightValue)
121{
122 UINT64 Result;
123
124
125 /* Perform the requested operation */
126
127 switch (Operator)
128 {
129 case EXPOP_ONES_COMPLIMENT:
130 Result = ~RightValue;
131 break;
132
133 case EXPOP_LOGICAL_NOT:
134 Result = !RightValue;
135 break;
136
137 case EXPOP_MULTIPLY:
138 Result = LeftValue * RightValue;
139 break;
140
141 case EXPOP_DIVIDE:
142 if (!RightValue)
143 {
144 DtError (ASL_ERROR, ASL_MSG_DIVIDE_BY_ZERO,
145 Gbl_CurrentField, Gbl_CurrentField->Value);
146 return (0);
147 }
148 Result = LeftValue / RightValue;
149 break;
150
151 case EXPOP_MODULO:
152 if (!RightValue)
153 {
154 DtError (ASL_ERROR, ASL_MSG_DIVIDE_BY_ZERO,
155 Gbl_CurrentField, Gbl_CurrentField->Value);
156 return (0);
157 }
158 Result = LeftValue % RightValue;
159 break;
160
161 case EXPOP_ADD:
162 Result = LeftValue + RightValue;
163 break;
164
165 case EXPOP_SUBTRACT:
166 Result = LeftValue - RightValue;
167 break;
168
169 case EXPOP_SHIFT_RIGHT:
170 Result = LeftValue >> RightValue;
171 break;
172
173 case EXPOP_SHIFT_LEFT:
174 Result = LeftValue << RightValue;
175 break;
176
177 case EXPOP_LESS:
178 Result = LeftValue < RightValue;
179 break;
180
181 case EXPOP_GREATER:
182 Result = LeftValue > RightValue;
183 break;
184
185 case EXPOP_LESS_EQUAL:
186 Result = LeftValue <= RightValue;
187 break;
188
189 case EXPOP_GREATER_EQUAL:
190 Result = LeftValue >= RightValue;
191 break;
192
193 case EXPOP_EQUAL:
194 Result = LeftValue = RightValue;
195 break;
196
197 case EXPOP_NOT_EQUAL:
198 Result = LeftValue != RightValue;
199 break;
200
201 case EXPOP_AND:
202 Result = LeftValue & RightValue;
203 break;
204
205 case EXPOP_XOR:
206 Result = LeftValue ^ RightValue;
207 break;
208
209 case EXPOP_OR:
210 Result = LeftValue | RightValue;
211 break;
212
213 case EXPOP_LOGICAL_AND:
214 Result = LeftValue && RightValue;
215 break;
216
217 case EXPOP_LOGICAL_OR:
218 Result = LeftValue || RightValue;
219 break;
220
221 default:
222
223 /* Unknown operator */
224
225 DtFatal (ASL_MSG_INVALID_EXPRESSION,
226 Gbl_CurrentField, Gbl_CurrentField->Value);
227 return (0);
228 }
229
230 DbgPrint (ASL_DEBUG_OUTPUT,
231 "IntegerEval: %s (%8.8X%8.8X %s %8.8X%8.8X) = %8.8X%8.8X\n",
232 Gbl_CurrentField->Value,
233 ACPI_FORMAT_UINT64 (LeftValue),
234 DtGetOpName (Operator),
235 ACPI_FORMAT_UINT64 (RightValue),
236 ACPI_FORMAT_UINT64 (Result));
237
238 return (Result);
239}
240
241
242/******************************************************************************
243 *
244 * FUNCTION: DtResolveLabel
245 *
246 * PARAMETERS: LabelString - Contains the label
247 *
248 * RETURN: Table offset associated with the label
249 *
250 * DESCRIPTION: Lookup a lable and return its value.
251 *
252 *****************************************************************************/
253
254UINT64
255DtResolveLabel (
256 char *LabelString)
257{
258 DT_FIELD *LabelField;
259
260
261 DbgPrint (ASL_DEBUG_OUTPUT, "Resolve Label: %s\n", LabelString);
262
263 /* Resolve a label reference to an integer (table offset) */
264
265 if (*LabelString != '$')
266 {
267 return (0);
268 }
269
270 LabelField = DtLookupLabel (LabelString);
271 if (!LabelField)
272 {
273 DtError (ASL_ERROR, ASL_MSG_UNKNOWN_LABEL,
274 Gbl_CurrentField, LabelString);
275 return (0);
276 }
277
278 /* All we need from the label is the offset in the table */
279
280 DbgPrint (ASL_DEBUG_OUTPUT, "Resolved Label: 0x%8.8X\n",
281 LabelField->TableOffset);
282
283 return (LabelField->TableOffset);
284}
285
286
287/******************************************************************************
288 *
289 * FUNCTION: DtDetectAllLabels
290 *
291 * PARAMETERS: FieldList - Field object at start of generic list
292 *
293 * RETURN: None
294 *
295 * DESCRIPTION: Detect all labels in a list of "generic" opcodes (such as
296 * a UEFI table.) and insert them into the global label list.
297 *
298 *****************************************************************************/
299
300void
301DtDetectAllLabels (
302 DT_FIELD *FieldList)
303{
304 ACPI_DMTABLE_INFO *Info;
305 DT_FIELD *GenericField;
306 UINT32 TableOffset;
307
308
309 TableOffset = Gbl_CurrentTableOffset;
310 GenericField = FieldList;
311
312 /*
313 * Process all "Label:" fields within the parse tree. We need
314 * to know the offsets for all labels before we can compile
315 * the parse tree in order to handle forward references. Traverse
316 * tree and get/set all field lengths of all operators in order to
317 * determine the label offsets.
318 */
319 while (GenericField)
320 {
321 Info = DtGetGenericTableInfo (GenericField->Name);
322 if (Info)
323 {
324 /* Maintain table offsets */
325
326 GenericField->TableOffset = TableOffset;
327 TableOffset += DtGetFieldLength (GenericField, Info);
328
329 /* Insert all labels in the global label list */
330
331 if (Info->Opcode == ACPI_DMT_LABEL)
332 {
333 DtInsertLabelField (GenericField);
334 }
335 }
336
337 GenericField = GenericField->Next;
338 }
339}
340
341
342/******************************************************************************
343 *
344 * FUNCTION: DtInsertLabelField
345 *
346 * PARAMETERS: Field - Field object with Label to be inserted
347 *
348 * RETURN: None
349 *
350 * DESCRIPTION: Insert a label field into the global label list
351 *
352 *****************************************************************************/
353
354static void
355DtInsertLabelField (
356 DT_FIELD *Field)
357{
358
359 DbgPrint (ASL_DEBUG_OUTPUT,
360 "DtInsertLabelField: Found Label : %s at output table offset %X\n",
361 Field->Value, Field->TableOffset);
362
363 Field->NextLabel = Gbl_LabelList;
364 Gbl_LabelList = Field;
365}
366
367
368/******************************************************************************
369 *
370 * FUNCTION: DtLookupLabel
371 *
372 * PARAMETERS: Name - Label to be resolved
373 *
374 * RETURN: Field object associated with the label
375 *
376 * DESCRIPTION: Lookup a label in the global label list. Used during the
377 * resolution of integer expressions.
378 *
379 *****************************************************************************/
380
381static DT_FIELD *
382DtLookupLabel (
383 char *Name)
384{
385 DT_FIELD *LabelField;
386
387
388 /* Skip a leading $ */
389
390 if (*Name == '$')
391 {
392 Name++;
393 }
394
395 /* Search global list */
396
397 LabelField = Gbl_LabelList;
398 while (LabelField)
399 {
400 if (!ACPI_STRCMP (Name, LabelField->Value))
401 {
402 return (LabelField);
403 }
404 LabelField = LabelField->NextLabel;
405 }
406
407 return (NULL);
408}
|