Mercurial > hg > truffle
annotate src/share/vm/adlc/adlparse.cpp @ 415:4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
Reviewed-by: kvn, rasbold
author | never |
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date | Tue, 28 Oct 2008 09:31:30 -0700 |
parents | a61af66fc99e |
children | ad8c8ca4ab0f 284d0af00d53 |
rev | line source |
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0 | 1 /* |
2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. | |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 // ADLPARSE.CPP - Architecture Description Language Parser | |
26 // Authors: Chris Vick and Mike Paleczny | |
27 #include "adlc.hpp" | |
28 | |
29 //----------------------------ADLParser---------------------------------------- | |
30 // Create a new ADL parser | |
31 ADLParser::ADLParser(FileBuff& buffer, ArchDesc& archDesc) | |
32 : _buf(buffer), _AD(archDesc), | |
33 _globalNames(archDesc.globalNames()) { | |
34 _AD._syntax_errs = _AD._semantic_errs = 0; // No errors so far this file | |
35 _AD._warnings = 0; // No warnings either | |
36 _curline = _ptr = NULL; // No pointers into buffer yet | |
37 | |
38 _preproc_depth = 0; | |
39 _preproc_not_taken = 0; | |
40 | |
41 // Delimit command-line definitions from in-file definitions: | |
42 _AD._preproc_list.add_signal(); | |
43 } | |
44 | |
45 //------------------------------~ADLParser------------------------------------- | |
46 // Delete an ADL parser. | |
47 ADLParser::~ADLParser() { | |
48 if (!_AD._quiet_mode) | |
49 fprintf(stderr,"---------------------------- Errors and Warnings ----------------------------\n"); | |
50 #ifndef ASSERT | |
51 fprintf(stderr, "**************************************************************\n"); | |
52 fprintf(stderr, "***** WARNING: ASSERT is undefined, assertions disabled. *****\n"); | |
53 fprintf(stderr, "**************************************************************\n"); | |
54 #endif | |
55 if( _AD._syntax_errs + _AD._semantic_errs + _AD._warnings == 0 ) { | |
56 if (!_AD._quiet_mode) | |
57 fprintf(stderr,"No errors or warnings to report from phase-1 parse.\n" ); | |
58 } | |
59 else { | |
60 if( _AD._syntax_errs ) { // Any syntax errors? | |
61 fprintf(stderr,"%s: Found %d syntax error", _buf._fp->_name, _AD._syntax_errs); | |
62 if( _AD._syntax_errs > 1 ) fprintf(stderr,"s.\n\n"); | |
63 else fprintf(stderr,".\n\n"); | |
64 } | |
65 if( _AD._semantic_errs ) { // Any semantic errors? | |
66 fprintf(stderr,"%s: Found %d semantic error", _buf._fp->_name, _AD._semantic_errs); | |
67 if( _AD._semantic_errs > 1 ) fprintf(stderr,"s.\n\n"); | |
68 else fprintf(stderr,".\n\n"); | |
69 } | |
70 if( _AD._warnings ) { // Any warnings? | |
71 fprintf(stderr,"%s: Found %d warning", _buf._fp->_name, _AD._warnings); | |
72 if( _AD._warnings > 1 ) fprintf(stderr,"s.\n\n"); | |
73 else fprintf(stderr,".\n\n"); | |
74 } | |
75 } | |
76 if (!_AD._quiet_mode) | |
77 fprintf(stderr,"-----------------------------------------------------------------------------\n"); | |
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78 _AD._TotalLines += linenum()-1; // -1 for overshoot in "nextline" routine |
0 | 79 |
80 // Write out information we have stored | |
81 // // UNIXism == fsync(stderr); | |
82 } | |
83 | |
84 //------------------------------parse------------------------------------------ | |
85 // Each top-level keyword should appear as the first non-whitespace on a line. | |
86 // | |
87 void ADLParser::parse() { | |
88 char *ident; | |
89 | |
90 // Iterate over the lines in the file buffer parsing Level 1 objects | |
91 for( next_line(); _curline != NULL; next_line()) { | |
92 _ptr = _curline; // Reset ptr to start of new line | |
93 skipws(); // Skip any leading whitespace | |
94 ident = get_ident(); // Get first token | |
95 if (ident == NULL) { // Empty line | |
96 continue; // Get the next line | |
97 } | |
98 if (!strcmp(ident, "instruct")) instr_parse(); | |
99 else if (!strcmp(ident, "operand")) oper_parse(); | |
100 else if (!strcmp(ident, "opclass")) opclass_parse(); | |
101 else if (!strcmp(ident, "ins_attrib")) ins_attr_parse(); | |
102 else if (!strcmp(ident, "op_attrib")) op_attr_parse(); | |
103 else if (!strcmp(ident, "source")) source_parse(); | |
104 else if (!strcmp(ident, "source_hpp")) source_hpp_parse(); | |
105 else if (!strcmp(ident, "register")) reg_parse(); | |
106 else if (!strcmp(ident, "frame")) frame_parse(); | |
107 else if (!strcmp(ident, "encode")) encode_parse(); | |
108 else if (!strcmp(ident, "pipeline")) pipe_parse(); | |
109 else if (!strcmp(ident, "definitions")) definitions_parse(); | |
110 else if (!strcmp(ident, "peephole")) peep_parse(); | |
111 else if (!strcmp(ident, "#define")) preproc_define(); | |
112 else if (!strcmp(ident, "#undef")) preproc_undef(); | |
113 else { | |
114 parse_err(SYNERR, "expected one of - instruct, operand, ins_attrib, op_attrib, source, register, pipeline, encode\n Found %s",ident); | |
115 } | |
116 } | |
117 | |
118 // Done with parsing, check consistency. | |
119 | |
120 if (_preproc_depth != 0) { | |
121 parse_err(SYNERR, "End of file inside #ifdef"); | |
122 } | |
123 | |
124 // AttributeForms ins_cost and op_cost must be defined for default behaviour | |
125 if (_globalNames[AttributeForm::_ins_cost] == NULL) { | |
126 parse_err(SEMERR, "Did not declare 'ins_cost' attribute"); | |
127 } | |
128 if (_globalNames[AttributeForm::_ins_pc_relative] == NULL) { | |
129 parse_err(SEMERR, "Did not declare 'ins_pc_relative' attribute"); | |
130 } | |
131 if (_globalNames[AttributeForm::_op_cost] == NULL) { | |
132 parse_err(SEMERR, "Did not declare 'op_cost' attribute"); | |
133 } | |
134 } | |
135 | |
136 // ******************** Private Level 1 Parse Functions ******************** | |
137 //------------------------------instr_parse------------------------------------ | |
138 // Parse the contents of an instruction definition, build the InstructForm to | |
139 // represent that instruction, and add it to the InstructForm list. | |
140 void ADLParser::instr_parse(void) { | |
141 char *ident; | |
142 InstructForm *instr; | |
143 MatchRule *rule; | |
144 int match_rules_cnt = 0; | |
145 | |
146 // First get the name of the instruction | |
147 if( (ident = get_unique_ident(_globalNames,"instruction")) == NULL ) | |
148 return; | |
149 instr = new InstructForm(ident); // Create new instruction form | |
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150 instr->_linenum = linenum(); |
0 | 151 _globalNames.Insert(ident, instr); // Add name to the name table |
152 // Debugging Stuff | |
153 if (_AD._adl_debug > 1) | |
154 fprintf(stderr,"Parsing Instruction Form %s\n", ident); | |
155 | |
156 // Then get the operands | |
157 skipws(); | |
158 if (_curchar != '(') { | |
159 parse_err(SYNERR, "missing '(' in instruct definition\n"); | |
160 } | |
161 // Parse the operand list | |
162 else get_oplist(instr->_parameters, instr->_localNames); | |
163 skipws(); // Skip leading whitespace | |
164 // Check for block delimiter | |
165 if ( (_curchar != '%') | |
166 || ( next_char(), (_curchar != '{')) ) { | |
167 parse_err(SYNERR, "missing '%{' in instruction definition\n"); | |
168 return; | |
169 } | |
170 next_char(); // Maintain the invariant | |
171 do { | |
172 ident = get_ident(); // Grab next identifier | |
173 if (ident == NULL) { | |
174 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar); | |
175 continue; | |
176 } | |
177 if (!strcmp(ident, "predicate")) instr->_predicate = pred_parse(); | |
178 else if (!strcmp(ident, "match")) { | |
179 // Allow one instruction have several match rules. | |
180 rule = instr->_matrule; | |
181 if (rule == NULL) { | |
182 // This is first match rule encountered | |
183 rule = match_parse(instr->_localNames); | |
184 if (rule) { | |
185 instr->_matrule = rule; | |
186 // Special case the treatment of Control instructions. | |
187 if( instr->is_ideal_control() ) { | |
188 // Control instructions return a special result, 'Universe' | |
189 rule->_result = "Universe"; | |
190 } | |
191 // Check for commutative operations with tree operands. | |
192 matchrule_clone_and_swap(rule, instr->_ident, match_rules_cnt); | |
193 } | |
194 } else { | |
195 // Find the end of the match rule list | |
196 while (rule->_next != NULL) | |
197 rule = rule->_next; | |
198 // Add the new match rule to the list | |
199 rule->_next = match_parse(instr->_localNames); | |
200 if (rule->_next) { | |
201 rule = rule->_next; | |
202 if( instr->is_ideal_control() ) { | |
203 parse_err(SYNERR, "unique match rule expected for %s\n", rule->_name); | |
204 return; | |
205 } | |
206 assert(match_rules_cnt < 100," too many match rule clones"); | |
207 char* buf = (char*) malloc(strlen(instr->_ident) + 4); | |
208 sprintf(buf, "%s_%d", instr->_ident, match_rules_cnt++); | |
209 rule->_result = buf; | |
210 // Check for commutative operations with tree operands. | |
211 matchrule_clone_and_swap(rule, instr->_ident, match_rules_cnt); | |
212 } | |
213 } | |
214 } | |
215 else if (!strcmp(ident, "encode")) { | |
216 parse_err(SYNERR, "Instructions specify ins_encode, not encode\n"); | |
217 } | |
218 else if (!strcmp(ident, "ins_encode")) | |
219 instr->_insencode = ins_encode_parse(*instr); | |
220 else if (!strcmp(ident, "opcode")) instr->_opcode = opcode_parse(instr); | |
221 else if (!strcmp(ident, "size")) instr->_size = size_parse(instr); | |
222 else if (!strcmp(ident, "effect")) effect_parse(instr); | |
223 else if (!strcmp(ident, "expand")) instr->_exprule = expand_parse(instr); | |
224 else if (!strcmp(ident, "rewrite")) instr->_rewrule = rewrite_parse(); | |
225 else if (!strcmp(ident, "constraint")) { | |
226 parse_err(SYNERR, "Instructions do not specify a constraint\n"); | |
227 } | |
228 else if (!strcmp(ident, "construct")) { | |
229 parse_err(SYNERR, "Instructions do not specify a construct\n"); | |
230 } | |
231 else if (!strcmp(ident, "format")) instr->_format = format_parse(); | |
232 else if (!strcmp(ident, "interface")) { | |
233 parse_err(SYNERR, "Instructions do not specify an interface\n"); | |
234 } | |
235 else if (!strcmp(ident, "ins_pipe")) ins_pipe_parse(*instr); | |
236 else { // Done with staticly defined parts of instruction definition | |
237 // Check identifier to see if it is the name of an attribute | |
238 const Form *form = _globalNames[ident]; | |
239 AttributeForm *attr = form ? form->is_attribute() : NULL; | |
240 if( attr && (attr->_atype == INS_ATTR) ) { | |
241 // Insert the new attribute into the linked list. | |
242 Attribute *temp = attr_parse(ident); | |
243 temp->_next = instr->_attribs; | |
244 instr->_attribs = temp; | |
245 } else { | |
246 parse_err(SYNERR, "expected one of:\n predicate, match, encode, or the name of an instruction attribute at %s\n", ident); | |
247 } | |
248 } | |
249 skipws(); | |
250 } while(_curchar != '%'); | |
251 next_char(); | |
252 if (_curchar != '}') { | |
253 parse_err(SYNERR, "missing '%}' in instruction definition\n"); | |
254 return; | |
255 } | |
256 // Check for "Set" form of chain rule | |
257 adjust_set_rule(instr); | |
258 if (_AD._pipeline ) { | |
259 if( instr->expands() ) { | |
260 if( instr->_ins_pipe ) | |
261 parse_err(WARN, "ins_pipe and expand rule both specified for instruction \"%s\"; ins_pipe will be unused\n", instr->_ident); | |
262 } else { | |
263 if( !instr->_ins_pipe ) | |
264 parse_err(WARN, "No ins_pipe specified for instruction \"%s\"\n", instr->_ident); | |
265 } | |
266 } | |
267 // Add instruction to tail of instruction list | |
268 _AD.addForm(instr); | |
269 | |
270 // Create instruction form for each additional match rule | |
271 rule = instr->_matrule; | |
272 if (rule != NULL) { | |
273 rule = rule->_next; | |
274 while (rule != NULL) { | |
275 ident = (char*)rule->_result; | |
276 InstructForm *clone = new InstructForm(ident, instr, rule); // Create new instruction form | |
277 _globalNames.Insert(ident, clone); // Add name to the name table | |
278 // Debugging Stuff | |
279 if (_AD._adl_debug > 1) | |
280 fprintf(stderr,"Parsing Instruction Form %s\n", ident); | |
281 // Check for "Set" form of chain rule | |
282 adjust_set_rule(clone); | |
283 // Add instruction to tail of instruction list | |
284 _AD.addForm(clone); | |
285 rule = rule->_next; | |
286 clone->_matrule->_next = NULL; // One match rule per clone | |
287 } | |
288 } | |
289 } | |
290 | |
291 //------------------------------matchrule_clone_and_swap----------------------- | |
292 // Check for commutative operations with subtree operands, | |
293 // create clones and swap operands. | |
294 void ADLParser::matchrule_clone_and_swap(MatchRule* rule, const char* instr_ident, int& match_rules_cnt) { | |
295 // Check for commutative operations with tree operands. | |
296 int count = 0; | |
297 rule->count_commutative_op(count); | |
298 if (count > 0) { | |
299 // Clone match rule and swap commutative operation's operands. | |
300 rule->swap_commutative_op(instr_ident, count, match_rules_cnt); | |
301 } | |
302 } | |
303 | |
304 //------------------------------adjust_set_rule-------------------------------- | |
305 // Check for "Set" form of chain rule | |
306 void ADLParser::adjust_set_rule(InstructForm *instr) { | |
307 if (instr->_matrule == NULL || instr->_matrule->_rChild == NULL) return; | |
308 const char *rch = instr->_matrule->_rChild->_opType; | |
309 const Form *frm = _globalNames[rch]; | |
310 if( (! strcmp(instr->_matrule->_opType,"Set")) && | |
311 frm && frm->is_operand() && (! frm->ideal_only()) ) { | |
312 // Previous implementation, which missed leaP*, but worked for loadCon* | |
313 unsigned position = 0; | |
314 const char *result = NULL; | |
315 const char *name = NULL; | |
316 const char *optype = NULL; | |
317 MatchNode *right = instr->_matrule->_rChild; | |
318 if (right->base_operand(position, _globalNames, result, name, optype)) { | |
319 position = 1; | |
320 const char *result2 = NULL; | |
321 const char *name2 = NULL; | |
322 const char *optype2 = NULL; | |
323 // Can not have additional base operands in right side of match! | |
324 if ( ! right->base_operand( position, _globalNames, result2, name2, optype2) ) { | |
325 assert( instr->_predicate == NULL, "ADLC does not support instruction chain rules with predicates"); | |
326 // Chain from input _ideal_operand_type_, | |
327 // Needed for shared roots of match-trees | |
328 ChainList *lst = (ChainList *)_AD._chainRules[optype]; | |
329 if (lst == NULL) { | |
330 lst = new ChainList(); | |
331 _AD._chainRules.Insert(optype, lst); | |
332 } | |
333 if (!lst->search(instr->_matrule->_lChild->_opType)) { | |
334 const char *cost = instr->cost(); | |
335 if (cost == NULL) { | |
336 cost = ((AttributeForm*)_globalNames[AttributeForm::_ins_cost])->_attrdef; | |
337 } | |
338 // The ADLC does not support chaining from the ideal operand type | |
339 // of a predicated user-defined operand | |
340 if( frm->is_operand() == NULL || frm->is_operand()->_predicate == NULL ) { | |
341 lst->insert(instr->_matrule->_lChild->_opType,cost,instr->_ident); | |
342 } | |
343 } | |
344 // Chain from input _user_defined_operand_type_, | |
345 lst = (ChainList *)_AD._chainRules[result]; | |
346 if (lst == NULL) { | |
347 lst = new ChainList(); | |
348 _AD._chainRules.Insert(result, lst); | |
349 } | |
350 if (!lst->search(instr->_matrule->_lChild->_opType)) { | |
351 const char *cost = instr->cost(); | |
352 if (cost == NULL) { | |
353 cost = ((AttributeForm*)_globalNames[AttributeForm::_ins_cost])->_attrdef; | |
354 } | |
355 // It is safe to chain from the top-level user-defined operand even | |
356 // if it has a predicate, since the predicate is checked before | |
357 // the user-defined type is available. | |
358 lst->insert(instr->_matrule->_lChild->_opType,cost,instr->_ident); | |
359 } | |
360 } else { | |
361 // May have instruction chain rule if root of right-tree is an ideal | |
362 OperandForm *rightOp = _globalNames[right->_opType]->is_operand(); | |
363 if( rightOp ) { | |
364 const Form *rightRoot = _globalNames[rightOp->_matrule->_opType]; | |
365 if( rightRoot && rightRoot->ideal_only() ) { | |
366 const char *chain_op = NULL; | |
367 if( rightRoot->is_instruction() ) | |
368 chain_op = rightOp->_ident; | |
369 if( chain_op ) { | |
370 // Look-up the operation in chain rule table | |
371 ChainList *lst = (ChainList *)_AD._chainRules[chain_op]; | |
372 if (lst == NULL) { | |
373 lst = new ChainList(); | |
374 _AD._chainRules.Insert(chain_op, lst); | |
375 } | |
376 // if (!lst->search(instr->_matrule->_lChild->_opType)) { | |
377 const char *cost = instr->cost(); | |
378 if (cost == NULL) { | |
379 cost = ((AttributeForm*)_globalNames[AttributeForm::_ins_cost])->_attrdef; | |
380 } | |
381 // This chains from a top-level operand whose predicate, if any, | |
382 // has been checked. | |
383 lst->insert(instr->_matrule->_lChild->_opType,cost,instr->_ident); | |
384 // } | |
385 } | |
386 } | |
387 } | |
388 } // end chain rule from right-tree's ideal root | |
389 } | |
390 } | |
391 } | |
392 | |
393 | |
394 //------------------------------oper_parse------------------------------------- | |
395 void ADLParser::oper_parse(void) { | |
396 char *ident; | |
397 OperandForm *oper; | |
398 AttributeForm *attr; | |
399 MatchRule *rule; | |
400 | |
401 // First get the name of the operand | |
402 skipws(); | |
403 if( (ident = get_unique_ident(_globalNames,"operand")) == NULL ) | |
404 return; | |
405 oper = new OperandForm(ident); // Create new operand form | |
415
4d9884b01ba6
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406 oper->_linenum = linenum(); |
0 | 407 _globalNames.Insert(ident, oper); // Add name to the name table |
408 | |
409 // Debugging Stuff | |
410 if (_AD._adl_debug > 1) fprintf(stderr,"Parsing Operand Form %s\n", ident); | |
411 | |
412 // Get the component operands | |
413 skipws(); | |
414 if (_curchar != '(') { | |
415 parse_err(SYNERR, "missing '(' in operand definition\n"); | |
416 return; | |
417 } | |
418 else get_oplist(oper->_parameters, oper->_localNames); // Parse the component operand list | |
419 skipws(); | |
420 // Check for block delimiter | |
421 if ((_curchar != '%') || (*(_ptr+1) != '{')) { // If not open block | |
422 parse_err(SYNERR, "missing '%c{' in operand definition\n","%"); | |
423 return; | |
424 } | |
425 next_char(); next_char(); // Skip over "%{" symbol | |
426 do { | |
427 ident = get_ident(); // Grab next identifier | |
428 if (ident == NULL) { | |
429 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar); | |
430 continue; | |
431 } | |
432 if (!strcmp(ident, "predicate")) oper->_predicate = pred_parse(); | |
433 else if (!strcmp(ident, "match")) { | |
434 // Find the end of the match rule list | |
435 rule = oper->_matrule; | |
436 if (rule) { | |
437 while (rule->_next) rule = rule->_next; | |
438 // Add the new match rule to the list | |
439 rule->_next = match_parse(oper->_localNames); | |
440 if (rule->_next) { | |
441 rule->_next->_result = oper->_ident; | |
442 } | |
443 } | |
444 else { | |
445 // This is first match rule encountered | |
446 oper->_matrule = match_parse(oper->_localNames); | |
447 if (oper->_matrule) { | |
448 oper->_matrule->_result = oper->_ident; | |
449 } | |
450 } | |
451 } | |
452 else if (!strcmp(ident, "encode")) oper->_interface = interface_parse(); | |
453 else if (!strcmp(ident, "ins_encode")) { | |
454 parse_err(SYNERR, "Operands specify 'encode', not 'ins_encode'\n"); | |
455 } | |
456 else if (!strcmp(ident, "opcode")) { | |
457 parse_err(SYNERR, "Operands do not specify an opcode\n"); | |
458 } | |
459 else if (!strcmp(ident, "effect")) { | |
460 parse_err(SYNERR, "Operands do not specify an effect\n"); | |
461 } | |
462 else if (!strcmp(ident, "expand")) { | |
463 parse_err(SYNERR, "Operands do not specify an expand\n"); | |
464 } | |
465 else if (!strcmp(ident, "rewrite")) { | |
466 parse_err(SYNERR, "Operands do not specify a rewrite\n"); | |
467 } | |
468 else if (!strcmp(ident, "constraint"))oper->_constraint= constraint_parse(); | |
469 else if (!strcmp(ident, "construct")) oper->_construct = construct_parse(); | |
470 else if (!strcmp(ident, "format")) oper->_format = format_parse(); | |
471 else if (!strcmp(ident, "interface")) oper->_interface = interface_parse(); | |
472 // Check identifier to see if it is the name of an attribute | |
473 else if (((attr = _globalNames[ident]->is_attribute()) != NULL) && | |
474 (attr->_atype == OP_ATTR)) oper->_attribs = attr_parse(ident); | |
475 else { | |
476 parse_err(SYNERR, "expected one of - constraint, predicate, match, encode, format, construct, or the name of a defined operand attribute at %s\n", ident); | |
477 } | |
478 skipws(); | |
479 } while(_curchar != '%'); | |
480 next_char(); | |
481 if (_curchar != '}') { | |
482 parse_err(SYNERR, "missing '%}' in operand definition\n"); | |
483 return; | |
484 } | |
485 // Add operand to tail of operand list | |
486 _AD.addForm(oper); | |
487 } | |
488 | |
489 //------------------------------opclass_parse---------------------------------- | |
490 // Operand Classes are a block with a comma delimited list of operand names | |
491 void ADLParser::opclass_parse(void) { | |
492 char *ident; | |
493 OpClassForm *opc; | |
494 OperandForm *opForm; | |
495 | |
496 // First get the name of the operand class | |
497 skipws(); | |
498 if( (ident = get_unique_ident(_globalNames,"opclass")) == NULL ) | |
499 return; | |
500 opc = new OpClassForm(ident); // Create new operand class form | |
501 _globalNames.Insert(ident, opc); // Add name to the name table | |
502 | |
503 // Debugging Stuff | |
504 if (_AD._adl_debug > 1) | |
505 fprintf(stderr,"Parsing Operand Class Form %s\n", ident); | |
506 | |
507 // Get the list of operands | |
508 skipws(); | |
509 if (_curchar != '(') { | |
510 parse_err(SYNERR, "missing '(' in operand definition\n"); | |
511 return; | |
512 } | |
513 do { | |
514 next_char(); // Skip past open paren or comma | |
515 ident = get_ident(); // Grab next identifier | |
516 if (ident == NULL) { | |
517 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar); | |
518 continue; | |
519 } | |
520 // Check identifier to see if it is the name of an operand | |
521 const Form *form = _globalNames[ident]; | |
522 opForm = form ? form->is_operand() : NULL; | |
523 if ( opForm ) { | |
524 opc->_oplst.addName(ident); // Add operand to opclass list | |
525 opForm->_classes.addName(opc->_ident);// Add opclass to operand list | |
526 } | |
527 else { | |
528 parse_err(SYNERR, "expected name of a defined operand at %s\n", ident); | |
529 } | |
530 skipws(); // skip trailing whitespace | |
531 } while (_curchar == ','); // Check for the comma | |
532 // Check for closing ')' | |
533 if (_curchar != ')') { | |
534 parse_err(SYNERR, "missing ')' or ',' in opclass definition\n"); | |
535 return; | |
536 } | |
537 next_char(); // Consume the ')' | |
538 skipws(); | |
539 // Check for closing ';' | |
540 if (_curchar != ';') { | |
541 parse_err(SYNERR, "missing ';' in opclass definition\n"); | |
542 return; | |
543 } | |
544 next_char(); // Consume the ';' | |
545 // Add operand to tail of operand list | |
546 _AD.addForm(opc); | |
547 } | |
548 | |
549 //------------------------------ins_attr_parse--------------------------------- | |
550 void ADLParser::ins_attr_parse(void) { | |
551 char *ident; | |
552 char *aexpr; | |
553 AttributeForm *attrib; | |
554 | |
555 // get name for the instruction attribute | |
556 skipws(); // Skip leading whitespace | |
557 if( (ident = get_unique_ident(_globalNames,"inst_attrib")) == NULL ) | |
558 return; | |
559 // Debugging Stuff | |
560 if (_AD._adl_debug > 1) fprintf(stderr,"Parsing Ins_Attribute Form %s\n", ident); | |
561 | |
562 // Get default value of the instruction attribute | |
563 skipws(); // Skip whitespace | |
564 if ((aexpr = get_paren_expr("attribute default expression string")) == NULL) { | |
565 parse_err(SYNERR, "missing '(' in ins_attrib definition\n"); | |
566 return; | |
567 } | |
568 // Debug Stuff | |
569 if (_AD._adl_debug > 1) fprintf(stderr,"Attribute Expression: %s\n", aexpr); | |
570 | |
571 // Check for terminator | |
572 if (_curchar != ';') { | |
573 parse_err(SYNERR, "missing ';' in ins_attrib definition\n"); | |
574 return; | |
575 } | |
576 next_char(); // Advance past the ';' | |
577 | |
578 // Construct the attribute, record global name, and store in ArchDesc | |
579 attrib = new AttributeForm(ident, INS_ATTR, aexpr); | |
580 _globalNames.Insert(ident, attrib); // Add name to the name table | |
581 _AD.addForm(attrib); | |
582 } | |
583 | |
584 //------------------------------op_attr_parse---------------------------------- | |
585 void ADLParser::op_attr_parse(void) { | |
586 char *ident; | |
587 char *aexpr; | |
588 AttributeForm *attrib; | |
589 | |
590 // get name for the operand attribute | |
591 skipws(); // Skip leading whitespace | |
592 if( (ident = get_unique_ident(_globalNames,"op_attrib")) == NULL ) | |
593 return; | |
594 // Debugging Stuff | |
595 if (_AD._adl_debug > 1) fprintf(stderr,"Parsing Op_Attribute Form %s\n", ident); | |
596 | |
597 // Get default value of the instruction attribute | |
598 skipws(); // Skip whitespace | |
599 if ((aexpr = get_paren_expr("attribute default expression string")) == NULL) { | |
600 parse_err(SYNERR, "missing '(' in op_attrib definition\n"); | |
601 return; | |
602 } | |
603 // Debug Stuff | |
604 if (_AD._adl_debug > 1) fprintf(stderr,"Attribute Expression: %s\n", aexpr); | |
605 | |
606 // Check for terminator | |
607 if (_curchar != ';') { | |
608 parse_err(SYNERR, "missing ';' in op_attrib definition\n"); | |
609 return; | |
610 } | |
611 next_char(); // Advance past the ';' | |
612 | |
613 // Construct the attribute, record global name, and store in ArchDesc | |
614 attrib = new AttributeForm(ident, OP_ATTR, aexpr); | |
615 _globalNames.Insert(ident, attrib); | |
616 _AD.addForm(attrib); | |
617 } | |
618 | |
619 //------------------------------definitions_parse----------------------------------- | |
620 void ADLParser::definitions_parse(void) { | |
621 skipws(); // Skip leading whitespace | |
622 if (_curchar == '%' && *(_ptr+1) == '{') { | |
623 next_char(); next_char(); // Skip "%{" | |
624 skipws(); | |
625 while (_curchar != '%' && *(_ptr+1) != '}') { | |
626 // Process each definition until finding closing string "%}" | |
627 char *token = get_ident(); | |
628 if (token == NULL) { | |
629 parse_err(SYNERR, "missing identifier inside definitions block.\n"); | |
630 return; | |
631 } | |
632 if (strcmp(token,"int_def")==0) { int_def_parse(); } | |
633 // if (strcmp(token,"str_def")==0) { str_def_parse(); } | |
634 skipws(); | |
635 } | |
636 } | |
637 else { | |
638 parse_err(SYNERR, "Missing %%{ ... %%} block after definitions keyword.\n"); | |
639 return; | |
640 } | |
641 } | |
642 | |
643 //------------------------------int_def_parse---------------------------------- | |
644 // Parse Example: | |
645 // int_def MEMORY_REF_COST ( 200, DEFAULT_COST * 2); | |
646 // <keyword> <name> ( <int_value>, <description> ); | |
647 // | |
648 void ADLParser::int_def_parse(void) { | |
649 char *name = NULL; // Name of definition | |
650 char *value = NULL; // its value, | |
651 int int_value = -1; // positive values only | |
652 char *description = NULL; // textual description | |
653 | |
654 // Get definition name | |
655 skipws(); // Skip whitespace | |
656 name = get_ident(); | |
657 if (name == NULL) { | |
658 parse_err(SYNERR, "missing definition name after int_def\n"); | |
659 return; | |
660 } | |
661 | |
662 // Check for value of int_def dname( integer_value [, string_expression ] ) | |
663 skipws(); | |
664 if (_curchar == '(') { | |
665 | |
666 // Parse the integer value. | |
667 next_char(); | |
668 value = get_ident(); | |
669 if (value == NULL) { | |
670 parse_err(SYNERR, "missing value in int_def\n"); | |
671 return; | |
672 } | |
673 if( !is_int_token(value, int_value) ) { | |
674 parse_err(SYNERR, "value in int_def is not recognized as integer\n"); | |
675 return; | |
676 } | |
677 skipws(); | |
678 | |
679 // Check for description | |
680 if (_curchar == ',') { | |
681 next_char(); // skip ',' | |
682 | |
683 description = get_expr("int_def description", ")"); | |
684 if (description == NULL) { | |
685 parse_err(SYNERR, "invalid or missing description in int_def\n"); | |
686 return; | |
687 } | |
688 trim(description); | |
689 } | |
690 | |
691 if (_curchar != ')') { | |
692 parse_err(SYNERR, "missing ')' in register definition statement\n"); | |
693 return; | |
694 } | |
695 next_char(); | |
696 } | |
697 | |
698 // Check for closing ';' | |
699 skipws(); | |
700 if (_curchar != ';') { | |
701 parse_err(SYNERR, "missing ';' after int_def\n"); | |
702 return; | |
703 } | |
704 next_char(); // move past ';' | |
705 | |
706 // Debug Stuff | |
707 if (_AD._adl_debug > 1) { | |
708 fprintf(stderr,"int_def: %s ( %s, %s )\n", name, | |
709 (value), (description ? description : "")); | |
710 } | |
711 | |
712 // Record new definition. | |
713 Expr *expr = new Expr(name, description, int_value, int_value); | |
714 const Expr *old_expr = _AD.globalDefs().define(name, expr); | |
715 if (old_expr != NULL) { | |
716 parse_err(SYNERR, "Duplicate definition\n"); | |
717 return; | |
718 } | |
719 | |
720 return; | |
721 } | |
722 | |
723 | |
724 //------------------------------source_parse----------------------------------- | |
725 void ADLParser::source_parse(void) { | |
726 SourceForm *source; // Encode class for instruction/operand | |
727 char *rule = NULL; // String representation of encode rule | |
728 | |
729 skipws(); // Skip leading whitespace | |
730 if ( (rule = find_cpp_block("source block")) == NULL ) { | |
731 parse_err(SYNERR, "incorrect or missing block for 'source'.\n"); | |
732 return; | |
733 } | |
734 // Debug Stuff | |
735 if (_AD._adl_debug > 1) fprintf(stderr,"Source Form: %s\n", rule); | |
736 | |
737 source = new SourceForm(rule); // Build new Source object | |
738 _AD.addForm(source); | |
739 // skipws(); | |
740 } | |
741 | |
742 //------------------------------source_hpp_parse------------------------------- | |
743 // Parse a source_hpp %{ ... %} block. | |
744 // The code gets stuck into the ad_<arch>.hpp file. | |
745 // If the source_hpp block appears before the register block in the AD | |
746 // file, it goes up at the very top of the ad_<arch>.hpp file, so that | |
747 // it can be used by register encodings, etc. Otherwise, it goes towards | |
748 // the bottom, where it's useful as a global definition to *.cpp files. | |
749 void ADLParser::source_hpp_parse(void) { | |
750 char *rule = NULL; // String representation of encode rule | |
751 | |
752 skipws(); // Skip leading whitespace | |
753 if ( (rule = find_cpp_block("source_hpp block")) == NULL ) { | |
754 parse_err(SYNERR, "incorrect or missing block for 'source_hpp'.\n"); | |
755 return; | |
756 } | |
757 // Debug Stuff | |
758 if (_AD._adl_debug > 1) fprintf(stderr,"Header Form: %s\n", rule); | |
759 | |
760 if (_AD.get_registers() == NULL) { | |
761 // Very early in the file, before reg_defs, we collect pre-headers. | |
762 PreHeaderForm* pre_header = new PreHeaderForm(rule); | |
763 _AD.addForm(pre_header); | |
764 } else { | |
765 // Normally, we collect header info, placed at the bottom of the hpp file. | |
766 HeaderForm* header = new HeaderForm(rule); | |
767 _AD.addForm(header); | |
768 } | |
769 } | |
770 | |
771 //------------------------------reg_parse-------------------------------------- | |
772 void ADLParser::reg_parse(void) { | |
773 | |
774 // Create the RegisterForm for the architecture description. | |
775 RegisterForm *regBlock = new RegisterForm(); // Build new Source object | |
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776 regBlock->_linenum = linenum(); |
0 | 777 _AD.addForm(regBlock); |
778 | |
779 skipws(); // Skip leading whitespace | |
780 if (_curchar == '%' && *(_ptr+1) == '{') { | |
781 next_char(); next_char(); // Skip "%{" | |
782 skipws(); | |
783 while (_curchar != '%' && *(_ptr+1) != '}') { | |
784 char *token = get_ident(); | |
785 if (token == NULL) { | |
786 parse_err(SYNERR, "missing identifier inside register block.\n"); | |
787 return; | |
788 } | |
789 if (strcmp(token,"reg_def")==0) { reg_def_parse(); } | |
790 if (strcmp(token,"reg_class")==0) { reg_class_parse(); } | |
791 if (strcmp(token,"alloc_class")==0) { alloc_class_parse(); } | |
792 skipws(); | |
793 } | |
794 } | |
795 else { | |
796 parse_err(SYNERR, "Missing %c{ ... %c} block after register keyword.\n",'%','%'); | |
797 return; | |
798 } | |
799 | |
800 // Add reg_class spill_regs | |
801 regBlock->addSpillRegClass(); | |
802 } | |
803 | |
804 //------------------------------encode_parse----------------------------------- | |
805 void ADLParser::encode_parse(void) { | |
806 EncodeForm *encBlock; // Information about instruction/operand encoding | |
807 char *desc = NULL; // String representation of encode rule | |
808 | |
809 _AD.getForm(&encBlock); | |
810 if ( encBlock == NULL) { | |
811 // Create the EncodeForm for the architecture description. | |
812 encBlock = new EncodeForm(); // Build new Source object | |
813 _AD.addForm(encBlock); | |
814 } | |
815 | |
816 skipws(); // Skip leading whitespace | |
817 if (_curchar == '%' && *(_ptr+1) == '{') { | |
818 next_char(); next_char(); // Skip "%{" | |
819 skipws(); | |
820 while (_curchar != '%' && *(_ptr+1) != '}') { | |
821 char *token = get_ident(); | |
822 if (token == NULL) { | |
823 parse_err(SYNERR, "missing identifier inside encoding block.\n"); | |
824 return; | |
825 } | |
826 if (strcmp(token,"enc_class")==0) { enc_class_parse(); } | |
827 skipws(); | |
828 } | |
829 } | |
830 else { | |
831 parse_err(SYNERR, "Missing %c{ ... %c} block after encode keyword.\n",'%','%'); | |
832 return; | |
833 } | |
834 } | |
835 | |
836 //------------------------------enc_class_parse-------------------------------- | |
837 void ADLParser::enc_class_parse(void) { | |
838 char *ec_name; // Name of encoding class being defined | |
839 | |
840 // Get encoding class name | |
841 skipws(); // Skip whitespace | |
842 ec_name = get_ident(); | |
843 if (ec_name == NULL) { | |
844 parse_err(SYNERR, "missing encoding class name after encode.\n"); | |
845 return; | |
846 } | |
847 | |
848 EncClass *encoding = _AD._encode->add_EncClass(ec_name); | |
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849 encoding->_linenum = linenum(); |
0 | 850 |
851 skipws(); // Skip leading whitespace | |
852 // Check for optional parameter list | |
853 if (_curchar == '(') { | |
854 do { | |
855 char *pType = NULL; // parameter type | |
856 char *pName = NULL; // parameter name | |
857 | |
858 next_char(); // skip open paren & comma characters | |
859 skipws(); | |
860 if (_curchar == ')') break; | |
861 | |
862 // Get parameter type | |
863 pType = get_ident(); | |
864 if (pType == NULL) { | |
865 parse_err(SYNERR, "parameter type expected at %c\n", _curchar); | |
866 return; | |
867 } | |
868 | |
869 skipws(); | |
870 // Get parameter name | |
871 pName = get_ident(); | |
872 if (pName == NULL) { | |
873 parse_err(SYNERR, "parameter name expected at %c\n", _curchar); | |
874 return; | |
875 } | |
876 | |
877 // Record parameter type and name | |
878 encoding->add_parameter( pType, pName ); | |
879 | |
880 skipws(); | |
881 } while(_curchar == ','); | |
882 | |
883 if (_curchar != ')') parse_err(SYNERR, "missing ')'\n"); | |
884 else { | |
885 next_char(); // Skip ')' | |
886 } | |
887 } // Done with parameter list | |
888 | |
889 skipws(); | |
890 // Check for block starting delimiters | |
891 if ((_curchar != '%') || (*(_ptr+1) != '{')) { // If not open block | |
892 parse_err(SYNERR, "missing '%c{' in enc_class definition\n", '%'); | |
893 return; | |
894 } | |
895 next_char(); // Skip '%' | |
896 next_char(); // Skip '{' | |
897 | |
898 enc_class_parse_block(encoding, ec_name); | |
899 } | |
900 | |
901 | |
902 void ADLParser::enc_class_parse_block(EncClass* encoding, char* ec_name) { | |
903 skipws_no_preproc(); // Skip leading whitespace | |
904 // Prepend location descriptor, for debugging; cf. ADLParser::find_cpp_block | |
905 if (_AD._adlocation_debug) { | |
906 const char* file = _AD._ADL_file._name; | |
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907 int line = linenum(); |
0 | 908 char* location = (char *)malloc(strlen(file) + 100); |
909 sprintf(location, "#line %d \"%s\"\n", line, file); | |
910 encoding->add_code(location); | |
911 } | |
912 | |
913 // Collect the parts of the encode description | |
914 // (1) strings that are passed through to output | |
915 // (2) replacement/substitution variable, preceeded by a '$' | |
916 while ( (_curchar != '%') && (*(_ptr+1) != '}') ) { | |
917 | |
918 // (1) | |
919 // Check if there is a string to pass through to output | |
920 char *start = _ptr; // Record start of the next string | |
921 while ((_curchar != '$') && ((_curchar != '%') || (*(_ptr+1) != '}')) ) { | |
922 // If at the start of a comment, skip past it | |
923 if( (_curchar == '/') && ((*(_ptr+1) == '/') || (*(_ptr+1) == '*')) ) { | |
924 skipws_no_preproc(); | |
925 } else { | |
926 // ELSE advance to the next character, or start of the next line | |
927 next_char_or_line(); | |
928 } | |
929 } | |
930 // If a string was found, terminate it and record in EncClass | |
931 if ( start != _ptr ) { | |
932 *_ptr = '\0'; // Terminate the string | |
933 encoding->add_code(start); | |
934 } | |
935 | |
936 // (2) | |
937 // If we are at a replacement variable, | |
938 // copy it and record in EncClass | |
939 if ( _curchar == '$' ) { | |
940 // Found replacement Variable | |
941 char *rep_var = get_rep_var_ident_dup(); | |
942 // Add flag to _strings list indicating we should check _rep_vars | |
943 encoding->add_rep_var(rep_var); | |
944 } | |
945 } // end while part of format description | |
946 next_char(); // Skip '%' | |
947 next_char(); // Skip '}' | |
948 | |
949 skipws(); | |
950 | |
951 // Debug Stuff | |
952 if (_AD._adl_debug > 1) fprintf(stderr,"EncodingClass Form: %s\n", ec_name); | |
953 } | |
954 | |
955 //------------------------------frame_parse----------------------------------- | |
956 void ADLParser::frame_parse(void) { | |
957 FrameForm *frame; // Information about stack-frame layout | |
958 char *desc = NULL; // String representation of frame | |
959 | |
960 skipws(); // Skip leading whitespace | |
961 | |
962 frame = new FrameForm(); // Build new Frame object | |
963 // Check for open block sequence | |
964 skipws(); // Skip leading whitespace | |
965 if (_curchar == '%' && *(_ptr+1) == '{') { | |
966 next_char(); next_char(); // Skip "%{" | |
967 skipws(); | |
968 while (_curchar != '%' && *(_ptr+1) != '}') { | |
969 char *token = get_ident(); | |
970 if (token == NULL) { | |
971 parse_err(SYNERR, "missing identifier inside frame block.\n"); | |
972 return; | |
973 } | |
974 if (strcmp(token,"stack_direction")==0) { | |
975 stack_dir_parse(frame); | |
976 } | |
977 if (strcmp(token,"sync_stack_slots")==0) { | |
978 sync_stack_slots_parse(frame); | |
979 } | |
980 if (strcmp(token,"frame_pointer")==0) { | |
981 frame_pointer_parse(frame, false); | |
982 } | |
983 if (strcmp(token,"interpreter_frame_pointer")==0) { | |
984 interpreter_frame_pointer_parse(frame, false); | |
985 // Add reg_class interpreter_frame_pointer_reg | |
986 if( _AD._register != NULL ) { | |
987 RegClass *reg_class = _AD._register->addRegClass("interpreter_frame_pointer_reg"); | |
988 char *interpreter_frame_pointer_reg = frame->_interpreter_frame_pointer_reg; | |
989 if( interpreter_frame_pointer_reg != NULL ) { | |
990 RegDef *regDef = _AD._register->getRegDef(interpreter_frame_pointer_reg); | |
991 reg_class->addReg(regDef); // add regDef to regClass | |
992 } | |
993 } | |
994 } | |
995 if (strcmp(token,"inline_cache_reg")==0) { | |
996 inline_cache_parse(frame, false); | |
997 // Add reg_class inline_cache_reg | |
998 if( _AD._register != NULL ) { | |
999 RegClass *reg_class = _AD._register->addRegClass("inline_cache_reg"); | |
1000 char *inline_cache_reg = frame->_inline_cache_reg; | |
1001 if( inline_cache_reg != NULL ) { | |
1002 RegDef *regDef = _AD._register->getRegDef(inline_cache_reg); | |
1003 reg_class->addReg(regDef); // add regDef to regClass | |
1004 } | |
1005 } | |
1006 } | |
1007 if (strcmp(token,"compiler_method_oop_reg")==0) { | |
1008 parse_err(WARN, "Using obsolete Token, compiler_method_oop_reg"); | |
1009 skipws(); | |
1010 } | |
1011 if (strcmp(token,"interpreter_method_oop_reg")==0) { | |
1012 interpreter_method_oop_parse(frame, false); | |
1013 // Add reg_class interpreter_method_oop_reg | |
1014 if( _AD._register != NULL ) { | |
1015 RegClass *reg_class = _AD._register->addRegClass("interpreter_method_oop_reg"); | |
1016 char *method_oop_reg = frame->_interpreter_method_oop_reg; | |
1017 if( method_oop_reg != NULL ) { | |
1018 RegDef *regDef = _AD._register->getRegDef(method_oop_reg); | |
1019 reg_class->addReg(regDef); // add regDef to regClass | |
1020 } | |
1021 } | |
1022 } | |
1023 if (strcmp(token,"cisc_spilling_operand_name")==0) { | |
1024 cisc_spilling_operand_name_parse(frame, false); | |
1025 } | |
1026 if (strcmp(token,"stack_alignment")==0) { | |
1027 stack_alignment_parse(frame); | |
1028 } | |
1029 if (strcmp(token,"return_addr")==0) { | |
1030 return_addr_parse(frame, false); | |
1031 } | |
1032 if (strcmp(token,"in_preserve_stack_slots")==0) { | |
1033 preserve_stack_parse(frame); | |
1034 } | |
1035 if (strcmp(token,"out_preserve_stack_slots")==0) { | |
1036 parse_err(WARN, "Using obsolete token, out_preserve_stack_slots"); | |
1037 skipws(); | |
1038 } | |
1039 if (strcmp(token,"varargs_C_out_slots_killed")==0) { | |
1040 frame->_varargs_C_out_slots_killed = parse_one_arg("varargs C out slots killed"); | |
1041 } | |
1042 if (strcmp(token,"calling_convention")==0) { | |
1043 frame->_calling_convention = calling_convention_parse(); | |
1044 } | |
1045 if (strcmp(token,"return_value")==0) { | |
1046 frame->_return_value = return_value_parse(); | |
1047 } | |
1048 if (strcmp(token,"c_frame_pointer")==0) { | |
1049 frame_pointer_parse(frame, true); | |
1050 } | |
1051 if (strcmp(token,"c_return_addr")==0) { | |
1052 return_addr_parse(frame, true); | |
1053 } | |
1054 if (strcmp(token,"c_calling_convention")==0) { | |
1055 frame->_c_calling_convention = calling_convention_parse(); | |
1056 } | |
1057 if (strcmp(token,"c_return_value")==0) { | |
1058 frame->_c_return_value = return_value_parse(); | |
1059 } | |
1060 | |
1061 skipws(); | |
1062 } | |
1063 } | |
1064 else { | |
1065 parse_err(SYNERR, "Missing %c{ ... %c} block after encode keyword.\n",'%','%'); | |
1066 return; | |
1067 } | |
1068 // All Java versions are required, native versions are optional | |
1069 if(frame->_frame_pointer == NULL) { | |
1070 parse_err(SYNERR, "missing frame pointer definition in frame section.\n"); | |
1071 return; | |
1072 } | |
1073 // !!!!! !!!!! | |
1074 // if(frame->_interpreter_frame_ptr_reg == NULL) { | |
1075 // parse_err(SYNERR, "missing interpreter frame pointer definition in frame section.\n"); | |
1076 // return; | |
1077 // } | |
1078 if(frame->_alignment == NULL) { | |
1079 parse_err(SYNERR, "missing alignment definition in frame section.\n"); | |
1080 return; | |
1081 } | |
1082 if(frame->_return_addr == NULL) { | |
1083 parse_err(SYNERR, "missing return address location in frame section.\n"); | |
1084 return; | |
1085 } | |
1086 if(frame->_in_preserve_slots == NULL) { | |
1087 parse_err(SYNERR, "missing stack slot preservation definition in frame section.\n"); | |
1088 return; | |
1089 } | |
1090 if(frame->_varargs_C_out_slots_killed == NULL) { | |
1091 parse_err(SYNERR, "missing varargs C out slots killed definition in frame section.\n"); | |
1092 return; | |
1093 } | |
1094 if(frame->_calling_convention == NULL) { | |
1095 parse_err(SYNERR, "missing calling convention definition in frame section.\n"); | |
1096 return; | |
1097 } | |
1098 if(frame->_return_value == NULL) { | |
1099 parse_err(SYNERR, "missing return value definition in frame section.\n"); | |
1100 return; | |
1101 } | |
1102 // Fill natives in identically with the Java versions if not present. | |
1103 if(frame->_c_frame_pointer == NULL) { | |
1104 frame->_c_frame_pointer = frame->_frame_pointer; | |
1105 } | |
1106 if(frame->_c_return_addr == NULL) { | |
1107 frame->_c_return_addr = frame->_return_addr; | |
1108 frame->_c_return_addr_loc = frame->_return_addr_loc; | |
1109 } | |
1110 if(frame->_c_calling_convention == NULL) { | |
1111 frame->_c_calling_convention = frame->_calling_convention; | |
1112 } | |
1113 if(frame->_c_return_value == NULL) { | |
1114 frame->_c_return_value = frame->_return_value; | |
1115 } | |
1116 | |
1117 // Debug Stuff | |
1118 if (_AD._adl_debug > 1) fprintf(stderr,"Frame Form: %s\n", desc); | |
1119 | |
1120 // Create the EncodeForm for the architecture description. | |
1121 _AD.addForm(frame); | |
1122 // skipws(); | |
1123 } | |
1124 | |
1125 //------------------------------stack_dir_parse-------------------------------- | |
1126 void ADLParser::stack_dir_parse(FrameForm *frame) { | |
1127 char *direction = parse_one_arg("stack direction entry"); | |
1128 if (strcmp(direction, "TOWARDS_LOW") == 0) { | |
1129 frame->_direction = false; | |
1130 } | |
1131 else if (strcmp(direction, "TOWARDS_HIGH") == 0) { | |
1132 frame->_direction = true; | |
1133 } | |
1134 else { | |
1135 parse_err(SYNERR, "invalid value inside stack direction entry.\n"); | |
1136 return; | |
1137 } | |
1138 } | |
1139 | |
1140 //------------------------------sync_stack_slots_parse------------------------- | |
1141 void ADLParser::sync_stack_slots_parse(FrameForm *frame) { | |
1142 // Assign value into frame form | |
1143 frame->_sync_stack_slots = parse_one_arg("sync stack slots entry"); | |
1144 } | |
1145 | |
1146 //------------------------------frame_pointer_parse---------------------------- | |
1147 void ADLParser::frame_pointer_parse(FrameForm *frame, bool native) { | |
1148 char *frame_pointer = parse_one_arg("frame pointer entry"); | |
1149 // Assign value into frame form | |
1150 if (native) { frame->_c_frame_pointer = frame_pointer; } | |
1151 else { frame->_frame_pointer = frame_pointer; } | |
1152 } | |
1153 | |
1154 //------------------------------interpreter_frame_pointer_parse---------------------------- | |
1155 void ADLParser::interpreter_frame_pointer_parse(FrameForm *frame, bool native) { | |
1156 frame->_interpreter_frame_pointer_reg = parse_one_arg("interpreter frame pointer entry"); | |
1157 } | |
1158 | |
1159 //------------------------------inline_cache_parse----------------------------- | |
1160 void ADLParser::inline_cache_parse(FrameForm *frame, bool native) { | |
1161 frame->_inline_cache_reg = parse_one_arg("inline cache reg entry"); | |
1162 } | |
1163 | |
1164 //------------------------------interpreter_method_oop_parse------------------ | |
1165 void ADLParser::interpreter_method_oop_parse(FrameForm *frame, bool native) { | |
1166 frame->_interpreter_method_oop_reg = parse_one_arg("method oop reg entry"); | |
1167 } | |
1168 | |
1169 //------------------------------cisc_spilling_operand_parse--------------------- | |
1170 void ADLParser::cisc_spilling_operand_name_parse(FrameForm *frame, bool native) { | |
1171 frame->_cisc_spilling_operand_name = parse_one_arg("cisc spilling operand name"); | |
1172 } | |
1173 | |
1174 //------------------------------stack_alignment_parse-------------------------- | |
1175 void ADLParser::stack_alignment_parse(FrameForm *frame) { | |
1176 char *alignment = parse_one_arg("stack alignment entry"); | |
1177 // Assign value into frame | |
1178 frame->_alignment = alignment; | |
1179 } | |
1180 | |
1181 //------------------------------parse_one_arg------------------------------- | |
1182 char *ADLParser::parse_one_arg(const char *description) { | |
1183 char *token = NULL; | |
1184 if(_curchar == '(') { | |
1185 next_char(); | |
1186 skipws(); | |
1187 token = get_expr(description, ")"); | |
1188 if (token == NULL) { | |
1189 parse_err(SYNERR, "missing value inside %s.\n", description); | |
1190 return NULL; | |
1191 } | |
1192 next_char(); // skip the close paren | |
1193 if(_curchar != ';') { // check for semi-colon | |
1194 parse_err(SYNERR, "missing %c in.\n", ';', description); | |
1195 return NULL; | |
1196 } | |
1197 next_char(); // skip the semi-colon | |
1198 } | |
1199 else { | |
1200 parse_err(SYNERR, "Missing %c in.\n", '(', description); | |
1201 return NULL; | |
1202 } | |
1203 | |
1204 trim(token); | |
1205 return token; | |
1206 } | |
1207 | |
1208 //------------------------------return_addr_parse------------------------------ | |
1209 void ADLParser::return_addr_parse(FrameForm *frame, bool native) { | |
1210 bool in_register = true; | |
1211 if(_curchar == '(') { | |
1212 next_char(); | |
1213 skipws(); | |
1214 char *token = get_ident(); | |
1215 if (token == NULL) { | |
1216 parse_err(SYNERR, "missing value inside return address entry.\n"); | |
1217 return; | |
1218 } | |
1219 // check for valid values for stack/register | |
1220 if (strcmp(token, "REG") == 0) { | |
1221 in_register = true; | |
1222 } | |
1223 else if (strcmp(token, "STACK") == 0) { | |
1224 in_register = false; | |
1225 } | |
1226 else { | |
1227 parse_err(SYNERR, "invalid value inside return_address entry.\n"); | |
1228 return; | |
1229 } | |
1230 if (native) { frame->_c_return_addr_loc = in_register; } | |
1231 else { frame->_return_addr_loc = in_register; } | |
1232 | |
1233 // Parse expression that specifies register or stack position | |
1234 skipws(); | |
1235 char *token2 = get_expr("return address entry", ")"); | |
1236 if (token2 == NULL) { | |
1237 parse_err(SYNERR, "missing value inside return address entry.\n"); | |
1238 return; | |
1239 } | |
1240 next_char(); // skip the close paren | |
1241 if (native) { frame->_c_return_addr = token2; } | |
1242 else { frame->_return_addr = token2; } | |
1243 | |
1244 if(_curchar != ';') { // check for semi-colon | |
1245 parse_err(SYNERR, "missing %c in return address entry.\n", ';'); | |
1246 return; | |
1247 } | |
1248 next_char(); // skip the semi-colon | |
1249 } | |
1250 else { | |
1251 parse_err(SYNERR, "Missing %c in return_address entry.\n", '('); | |
1252 } | |
1253 } | |
1254 | |
1255 //------------------------------preserve_stack_parse--------------------------- | |
1256 void ADLParser::preserve_stack_parse(FrameForm *frame) { | |
1257 if(_curchar == '(') { | |
1258 char *token = get_paren_expr("preserve_stack_slots"); | |
1259 frame->_in_preserve_slots = token; | |
1260 | |
1261 if(_curchar != ';') { // check for semi-colon | |
1262 parse_err(SYNERR, "missing %c in preserve stack slot entry.\n", ';'); | |
1263 return; | |
1264 } | |
1265 next_char(); // skip the semi-colon | |
1266 } | |
1267 else { | |
1268 parse_err(SYNERR, "Missing %c in preserve stack slot entry.\n", '('); | |
1269 } | |
1270 } | |
1271 | |
1272 //------------------------------calling_convention_parse----------------------- | |
1273 char *ADLParser::calling_convention_parse() { | |
1274 char *desc = NULL; // String representation of calling_convention | |
1275 | |
1276 skipws(); // Skip leading whitespace | |
1277 if ( (desc = find_cpp_block("calling convention block")) == NULL ) { | |
1278 parse_err(SYNERR, "incorrect or missing block for 'calling_convention'.\n"); | |
1279 } | |
1280 return desc; | |
1281 } | |
1282 | |
1283 //------------------------------return_value_parse----------------------------- | |
1284 char *ADLParser::return_value_parse() { | |
1285 char *desc = NULL; // String representation of calling_convention | |
1286 | |
1287 skipws(); // Skip leading whitespace | |
1288 if ( (desc = find_cpp_block("return value block")) == NULL ) { | |
1289 parse_err(SYNERR, "incorrect or missing block for 'return_value'.\n"); | |
1290 } | |
1291 return desc; | |
1292 } | |
1293 | |
1294 //------------------------------ins_pipe_parse--------------------------------- | |
1295 void ADLParser::ins_pipe_parse(InstructForm &instr) { | |
1296 char * ident; | |
1297 | |
1298 skipws(); | |
1299 if ( _curchar != '(' ) { // Check for delimiter | |
1300 parse_err(SYNERR, "missing \"(\" in ins_pipe definition\n"); | |
1301 return; | |
1302 } | |
1303 | |
1304 next_char(); | |
1305 ident = get_ident(); // Grab next identifier | |
1306 | |
1307 if (ident == NULL) { | |
1308 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar); | |
1309 return; | |
1310 } | |
1311 | |
1312 skipws(); | |
1313 if ( _curchar != ')' ) { // Check for delimiter | |
1314 parse_err(SYNERR, "missing \")\" in ins_pipe definition\n"); | |
1315 return; | |
1316 } | |
1317 | |
1318 next_char(); // skip the close paren | |
1319 if(_curchar != ';') { // check for semi-colon | |
1320 parse_err(SYNERR, "missing %c in return value entry.\n", ';'); | |
1321 return; | |
1322 } | |
1323 next_char(); // skip the semi-colon | |
1324 | |
1325 // Check ident for validity | |
1326 if (_AD._pipeline && !_AD._pipeline->_classlist.search(ident)) { | |
1327 parse_err(SYNERR, "\"%s\" is not a valid pipeline class\n", ident); | |
1328 return; | |
1329 } | |
1330 | |
1331 // Add this instruction to the list in the pipeline class | |
1332 _AD._pipeline->_classdict[ident]->is_pipeclass()->_instructs.addName(instr._ident); | |
1333 | |
1334 // Set the name of the pipeline class in the instruction | |
1335 instr._ins_pipe = ident; | |
1336 return; | |
1337 } | |
1338 | |
1339 //------------------------------pipe_parse------------------------------------- | |
1340 void ADLParser::pipe_parse(void) { | |
1341 PipelineForm *pipeline; // Encode class for instruction/operand | |
1342 char * ident; | |
1343 | |
1344 pipeline = new PipelineForm(); // Build new Source object | |
1345 _AD.addForm(pipeline); | |
1346 | |
1347 skipws(); // Skip leading whitespace | |
1348 // Check for block delimiter | |
1349 if ( (_curchar != '%') | |
1350 || ( next_char(), (_curchar != '{')) ) { | |
1351 parse_err(SYNERR, "missing '%{' in pipeline definition\n"); | |
1352 return; | |
1353 } | |
1354 next_char(); // Maintain the invariant | |
1355 do { | |
1356 ident = get_ident(); // Grab next identifier | |
1357 if (ident == NULL) { | |
1358 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar); | |
1359 continue; | |
1360 } | |
1361 if (!strcmp(ident, "resources" )) resource_parse(*pipeline); | |
1362 else if (!strcmp(ident, "pipe_desc" )) pipe_desc_parse(*pipeline); | |
1363 else if (!strcmp(ident, "pipe_class")) pipe_class_parse(*pipeline); | |
1364 else if (!strcmp(ident, "define")) { | |
1365 skipws(); | |
1366 if ( (_curchar != '%') | |
1367 || ( next_char(), (_curchar != '{')) ) { | |
1368 parse_err(SYNERR, "expected '%{'\n"); | |
1369 return; | |
1370 } | |
1371 next_char(); skipws(); | |
1372 | |
1373 char *node_class = get_ident(); | |
1374 if (node_class == NULL) { | |
1375 parse_err(SYNERR, "expected identifier, found \"%c\"\n", _curchar); | |
1376 return; | |
1377 } | |
1378 | |
1379 skipws(); | |
1380 if (_curchar != ',' && _curchar != '=') { | |
1381 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar); | |
1382 break; | |
1383 } | |
1384 next_char(); skipws(); | |
1385 | |
1386 char *pipe_class = get_ident(); | |
1387 if (pipe_class == NULL) { | |
1388 parse_err(SYNERR, "expected identifier, found \"%c\"\n", _curchar); | |
1389 return; | |
1390 } | |
1391 if (_curchar != ';' ) { | |
1392 parse_err(SYNERR, "expected `;`, found '%c'\n", _curchar); | |
1393 break; | |
1394 } | |
1395 next_char(); // Skip over semi-colon | |
1396 | |
1397 skipws(); | |
1398 if ( (_curchar != '%') | |
1399 || ( next_char(), (_curchar != '}')) ) { | |
1400 parse_err(SYNERR, "expected '%%}', found \"%c\"\n", _curchar); | |
1401 } | |
1402 next_char(); | |
1403 | |
1404 // Check ident for validity | |
1405 if (_AD._pipeline && !_AD._pipeline->_classlist.search(pipe_class)) { | |
1406 parse_err(SYNERR, "\"%s\" is not a valid pipeline class\n", pipe_class); | |
1407 return; | |
1408 } | |
1409 | |
1410 // Add this machine node to the list in the pipeline class | |
1411 _AD._pipeline->_classdict[pipe_class]->is_pipeclass()->_instructs.addName(node_class); | |
1412 | |
1413 MachNodeForm *machnode = new MachNodeForm(node_class); // Create new machnode form | |
1414 machnode->_machnode_pipe = pipe_class; | |
1415 | |
1416 _AD.addForm(machnode); | |
1417 } | |
1418 else if (!strcmp(ident, "attributes")) { | |
1419 bool vsi_seen = false, bhds_seen = false; | |
1420 | |
1421 skipws(); | |
1422 if ( (_curchar != '%') | |
1423 || ( next_char(), (_curchar != '{')) ) { | |
1424 parse_err(SYNERR, "expected '%{'\n"); | |
1425 return; | |
1426 } | |
1427 next_char(); skipws(); | |
1428 | |
1429 while (_curchar != '%') { | |
1430 ident = get_ident(); | |
1431 if (ident == NULL) | |
1432 break; | |
1433 | |
1434 if (!strcmp(ident, "variable_size_instructions")) { | |
1435 skipws(); | |
1436 if (_curchar == ';') { | |
1437 next_char(); skipws(); | |
1438 } | |
1439 | |
1440 pipeline->_variableSizeInstrs = true; | |
1441 vsi_seen = true; | |
1442 continue; | |
1443 } | |
1444 | |
1445 if (!strcmp(ident, "fixed_size_instructions")) { | |
1446 skipws(); | |
1447 if (_curchar == ';') { | |
1448 next_char(); skipws(); | |
1449 } | |
1450 | |
1451 pipeline->_variableSizeInstrs = false; | |
1452 vsi_seen = true; | |
1453 continue; | |
1454 } | |
1455 | |
1456 if (!strcmp(ident, "branch_has_delay_slot")) { | |
1457 skipws(); | |
1458 if (_curchar == ';') { | |
1459 next_char(); skipws(); | |
1460 } | |
1461 | |
1462 pipeline->_branchHasDelaySlot = true; | |
1463 bhds_seen = true; | |
1464 continue; | |
1465 } | |
1466 | |
1467 if (!strcmp(ident, "max_instructions_per_bundle")) { | |
1468 skipws(); | |
1469 if (_curchar != '=') { | |
1470 parse_err(SYNERR, "expected `=`\n"); | |
1471 break; | |
1472 } | |
1473 | |
1474 next_char(); skipws(); | |
1475 pipeline->_maxInstrsPerBundle = get_int(); | |
1476 skipws(); | |
1477 | |
1478 if (_curchar == ';') { | |
1479 next_char(); skipws(); | |
1480 } | |
1481 | |
1482 continue; | |
1483 } | |
1484 | |
1485 if (!strcmp(ident, "max_bundles_per_cycle")) { | |
1486 skipws(); | |
1487 if (_curchar != '=') { | |
1488 parse_err(SYNERR, "expected `=`\n"); | |
1489 break; | |
1490 } | |
1491 | |
1492 next_char(); skipws(); | |
1493 pipeline->_maxBundlesPerCycle = get_int(); | |
1494 skipws(); | |
1495 | |
1496 if (_curchar == ';') { | |
1497 next_char(); skipws(); | |
1498 } | |
1499 | |
1500 continue; | |
1501 } | |
1502 | |
1503 if (!strcmp(ident, "instruction_unit_size")) { | |
1504 skipws(); | |
1505 if (_curchar != '=') { | |
1506 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar); | |
1507 break; | |
1508 } | |
1509 | |
1510 next_char(); skipws(); | |
1511 pipeline->_instrUnitSize = get_int(); | |
1512 skipws(); | |
1513 | |
1514 if (_curchar == ';') { | |
1515 next_char(); skipws(); | |
1516 } | |
1517 | |
1518 continue; | |
1519 } | |
1520 | |
1521 if (!strcmp(ident, "bundle_unit_size")) { | |
1522 skipws(); | |
1523 if (_curchar != '=') { | |
1524 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar); | |
1525 break; | |
1526 } | |
1527 | |
1528 next_char(); skipws(); | |
1529 pipeline->_bundleUnitSize = get_int(); | |
1530 skipws(); | |
1531 | |
1532 if (_curchar == ';') { | |
1533 next_char(); skipws(); | |
1534 } | |
1535 | |
1536 continue; | |
1537 } | |
1538 | |
1539 if (!strcmp(ident, "instruction_fetch_unit_size")) { | |
1540 skipws(); | |
1541 if (_curchar != '=') { | |
1542 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar); | |
1543 break; | |
1544 } | |
1545 | |
1546 next_char(); skipws(); | |
1547 pipeline->_instrFetchUnitSize = get_int(); | |
1548 skipws(); | |
1549 | |
1550 if (_curchar == ';') { | |
1551 next_char(); skipws(); | |
1552 } | |
1553 | |
1554 continue; | |
1555 } | |
1556 | |
1557 if (!strcmp(ident, "instruction_fetch_units")) { | |
1558 skipws(); | |
1559 if (_curchar != '=') { | |
1560 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar); | |
1561 break; | |
1562 } | |
1563 | |
1564 next_char(); skipws(); | |
1565 pipeline->_instrFetchUnits = get_int(); | |
1566 skipws(); | |
1567 | |
1568 if (_curchar == ';') { | |
1569 next_char(); skipws(); | |
1570 } | |
1571 | |
1572 continue; | |
1573 } | |
1574 | |
1575 if (!strcmp(ident, "nops")) { | |
1576 skipws(); | |
1577 if (_curchar != '(') { | |
1578 parse_err(SYNERR, "expected `(`, found '%c'\n", _curchar); | |
1579 break; | |
1580 } | |
1581 | |
1582 next_char(); skipws(); | |
1583 | |
1584 while (_curchar != ')') { | |
1585 ident = get_ident(); | |
1586 if (ident == NULL) { | |
1587 parse_err(SYNERR, "expected identifier for nop instruction, found '%c'\n", _curchar); | |
1588 break; | |
1589 } | |
1590 | |
1591 pipeline->_noplist.addName(ident); | |
1592 pipeline->_nopcnt++; | |
1593 skipws(); | |
1594 | |
1595 if (_curchar == ',') { | |
1596 next_char(); skipws(); | |
1597 } | |
1598 } | |
1599 | |
1600 next_char(); skipws(); | |
1601 | |
1602 if (_curchar == ';') { | |
1603 next_char(); skipws(); | |
1604 } | |
1605 | |
1606 continue; | |
1607 } | |
1608 | |
1609 parse_err(SYNERR, "unknown specifier \"%s\"\n", ident); | |
1610 } | |
1611 | |
1612 if ( (_curchar != '%') | |
1613 || ( next_char(), (_curchar != '}')) ) { | |
1614 parse_err(SYNERR, "expected '%}', found \"%c\"\n", _curchar); | |
1615 } | |
1616 next_char(); skipws(); | |
1617 | |
1618 if (pipeline->_maxInstrsPerBundle == 0) | |
1619 parse_err(SYNERR, "\"max_instructions_per_bundle\" unspecified\n"); | |
1620 if (pipeline->_instrUnitSize == 0 && pipeline->_bundleUnitSize == 0) | |
1621 parse_err(SYNERR, "\"instruction_unit_size\" and \"bundle_unit_size\" unspecified\n"); | |
1622 if (pipeline->_instrFetchUnitSize == 0) | |
1623 parse_err(SYNERR, "\"instruction_fetch_unit_size\" unspecified\n"); | |
1624 if (pipeline->_instrFetchUnits == 0) | |
1625 parse_err(SYNERR, "\"instruction_fetch_units\" unspecified\n"); | |
1626 if (!vsi_seen) | |
1627 parse_err(SYNERR, "\"variable_size_instruction\" or \"fixed_size_instruction\" unspecified\n"); | |
1628 } | |
1629 else { // Done with staticly defined parts of instruction definition | |
1630 parse_err(SYNERR, "expected one of \"resources\", \"pipe_desc\", \"pipe_class\", found \"%s\"\n", ident); | |
1631 return; | |
1632 } | |
1633 skipws(); | |
1634 if (_curchar == ';') | |
1635 skipws(); | |
1636 } while(_curchar != '%'); | |
1637 | |
1638 next_char(); | |
1639 if (_curchar != '}') { | |
1640 parse_err(SYNERR, "missing \"%}\" in pipeline definition\n"); | |
1641 return; | |
1642 } | |
1643 | |
1644 next_char(); | |
1645 } | |
1646 | |
1647 //------------------------------resource_parse---------------------------- | |
1648 void ADLParser::resource_parse(PipelineForm &pipeline) { | |
1649 ResourceForm *resource; | |
1650 char * ident; | |
1651 char * expr; | |
1652 unsigned mask; | |
1653 pipeline._rescount = 0; | |
1654 | |
1655 skipws(); // Skip leading whitespace | |
1656 | |
1657 if (_curchar != '(') { | |
1658 parse_err(SYNERR, "missing \"(\" in resource definition\n"); | |
1659 return; | |
1660 } | |
1661 | |
1662 do { | |
1663 next_char(); // Skip "(" or "," | |
1664 ident = get_ident(); // Grab next identifier | |
1665 | |
1666 if (ident == NULL) { | |
1667 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar); | |
1668 return; | |
1669 } | |
1670 skipws(); | |
1671 | |
1672 if (_curchar != '=') { | |
1673 mask = (1 << pipeline._rescount++); | |
1674 } | |
1675 else { | |
1676 next_char(); skipws(); | |
1677 expr = get_ident(); // Grab next identifier | |
1678 if (expr == NULL) { | |
1679 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar); | |
1680 return; | |
1681 } | |
1682 resource = (ResourceForm *) pipeline._resdict[expr]; | |
1683 if (resource == NULL) { | |
1684 parse_err(SYNERR, "resource \"%s\" is not defined\n", expr); | |
1685 return; | |
1686 } | |
1687 mask = resource->mask(); | |
1688 | |
1689 skipws(); | |
1690 while (_curchar == '|') { | |
1691 next_char(); skipws(); | |
1692 | |
1693 expr = get_ident(); // Grab next identifier | |
1694 if (expr == NULL) { | |
1695 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar); | |
1696 return; | |
1697 } | |
1698 | |
1699 resource = (ResourceForm *) pipeline._resdict[expr]; // Look up the value | |
1700 if (resource == NULL) { | |
1701 parse_err(SYNERR, "resource \"%s\" is not defined\n", expr); | |
1702 return; | |
1703 } | |
1704 | |
1705 mask |= resource->mask(); | |
1706 skipws(); | |
1707 } | |
1708 } | |
1709 | |
1710 resource = new ResourceForm(mask); | |
1711 | |
1712 pipeline._resdict.Insert(ident, resource); | |
1713 pipeline._reslist.addName(ident); | |
1714 } while (_curchar == ','); | |
1715 | |
1716 if (_curchar != ')') { | |
1717 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar); | |
1718 return; | |
1719 } | |
1720 | |
1721 next_char(); // Skip ")" | |
1722 if (_curchar == ';') | |
1723 next_char(); // Skip ";" | |
1724 } | |
1725 | |
1726 //------------------------------resource_parse---------------------------- | |
1727 void ADLParser::pipe_desc_parse(PipelineForm &pipeline) { | |
1728 char * ident; | |
1729 | |
1730 skipws(); // Skip leading whitespace | |
1731 | |
1732 if (_curchar != '(') { | |
1733 parse_err(SYNERR, "missing \"(\" in pipe_desc definition\n"); | |
1734 return; | |
1735 } | |
1736 | |
1737 do { | |
1738 next_char(); // Skip "(" or "," | |
1739 ident = get_ident(); // Grab next identifier | |
1740 if (ident == NULL) { | |
1741 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar); | |
1742 return; | |
1743 } | |
1744 | |
1745 // Add the name to the list | |
1746 pipeline._stages.addName(ident); | |
1747 pipeline._stagecnt++; | |
1748 | |
1749 skipws(); | |
1750 } while (_curchar == ','); | |
1751 | |
1752 if (_curchar != ')') { | |
1753 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar); | |
1754 return; | |
1755 } | |
1756 | |
1757 next_char(); // Skip ")" | |
1758 if (_curchar == ';') | |
1759 next_char(); // Skip ";" | |
1760 } | |
1761 | |
1762 //------------------------------pipe_class_parse-------------------------- | |
1763 void ADLParser::pipe_class_parse(PipelineForm &pipeline) { | |
1764 PipeClassForm *pipe_class; | |
1765 char * ident; | |
1766 char * stage; | |
1767 char * read_or_write; | |
1768 int is_write; | |
1769 int is_read; | |
1770 OperandForm *oper; | |
1771 | |
1772 skipws(); // Skip leading whitespace | |
1773 | |
1774 ident = get_ident(); // Grab next identifier | |
1775 | |
1776 if (ident == NULL) { | |
1777 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar); | |
1778 return; | |
1779 } | |
1780 | |
1781 // Create a record for the pipe_class | |
1782 pipe_class = new PipeClassForm(ident, ++pipeline._classcnt); | |
1783 pipeline._classdict.Insert(ident, pipe_class); | |
1784 pipeline._classlist.addName(ident); | |
1785 | |
1786 // Then get the operands | |
1787 skipws(); | |
1788 if (_curchar != '(') { | |
1789 parse_err(SYNERR, "missing \"(\" in pipe_class definition\n"); | |
1790 } | |
1791 // Parse the operand list | |
1792 else get_oplist(pipe_class->_parameters, pipe_class->_localNames); | |
1793 skipws(); // Skip leading whitespace | |
1794 // Check for block delimiter | |
1795 if ( (_curchar != '%') | |
1796 || ( next_char(), (_curchar != '{')) ) { | |
1797 parse_err(SYNERR, "missing \"%{\" in pipe_class definition\n"); | |
1798 return; | |
1799 } | |
1800 next_char(); | |
1801 | |
1802 do { | |
1803 ident = get_ident(); // Grab next identifier | |
1804 if (ident == NULL) { | |
1805 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar); | |
1806 continue; | |
1807 } | |
1808 skipws(); | |
1809 | |
1810 if (!strcmp(ident, "fixed_latency")) { | |
1811 skipws(); | |
1812 if (_curchar != '(') { | |
1813 parse_err(SYNERR, "missing \"(\" in latency definition\n"); | |
1814 return; | |
1815 } | |
1816 next_char(); skipws(); | |
1817 if( !isdigit(_curchar) ) { | |
1818 parse_err(SYNERR, "number expected for \"%c\" in latency definition\n", _curchar); | |
1819 return; | |
1820 } | |
1821 int fixed_latency = get_int(); | |
1822 skipws(); | |
1823 if (_curchar != ')') { | |
1824 parse_err(SYNERR, "missing \")\" in latency definition\n"); | |
1825 return; | |
1826 } | |
1827 next_char(); skipws(); | |
1828 if (_curchar != ';') { | |
1829 parse_err(SYNERR, "missing \";\" in latency definition\n"); | |
1830 return; | |
1831 } | |
1832 | |
1833 pipe_class->setFixedLatency(fixed_latency); | |
1834 next_char(); skipws(); | |
1835 continue; | |
1836 } | |
1837 | |
1838 if (!strcmp(ident, "zero_instructions") || | |
1839 !strcmp(ident, "no_instructions")) { | |
1840 skipws(); | |
1841 if (_curchar != ';') { | |
1842 parse_err(SYNERR, "missing \";\" in latency definition\n"); | |
1843 return; | |
1844 } | |
1845 | |
1846 pipe_class->setInstructionCount(0); | |
1847 next_char(); skipws(); | |
1848 continue; | |
1849 } | |
1850 | |
1851 if (!strcmp(ident, "one_instruction_with_delay_slot") || | |
1852 !strcmp(ident, "single_instruction_with_delay_slot")) { | |
1853 skipws(); | |
1854 if (_curchar != ';') { | |
1855 parse_err(SYNERR, "missing \";\" in latency definition\n"); | |
1856 return; | |
1857 } | |
1858 | |
1859 pipe_class->setInstructionCount(1); | |
1860 pipe_class->setBranchDelay(true); | |
1861 next_char(); skipws(); | |
1862 continue; | |
1863 } | |
1864 | |
1865 if (!strcmp(ident, "one_instruction") || | |
1866 !strcmp(ident, "single_instruction")) { | |
1867 skipws(); | |
1868 if (_curchar != ';') { | |
1869 parse_err(SYNERR, "missing \";\" in latency definition\n"); | |
1870 return; | |
1871 } | |
1872 | |
1873 pipe_class->setInstructionCount(1); | |
1874 next_char(); skipws(); | |
1875 continue; | |
1876 } | |
1877 | |
1878 if (!strcmp(ident, "instructions_in_first_bundle") || | |
1879 !strcmp(ident, "instruction_count")) { | |
1880 skipws(); | |
1881 | |
1882 int number_of_instructions = 1; | |
1883 | |
1884 if (_curchar != '(') { | |
1885 parse_err(SYNERR, "\"(\" expected at \"%c\"\n", _curchar); | |
1886 continue; | |
1887 } | |
1888 | |
1889 next_char(); skipws(); | |
1890 number_of_instructions = get_int(); | |
1891 | |
1892 skipws(); | |
1893 if (_curchar != ')') { | |
1894 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar); | |
1895 continue; | |
1896 } | |
1897 | |
1898 next_char(); skipws(); | |
1899 if (_curchar != ';') { | |
1900 parse_err(SYNERR, "missing \";\" in latency definition\n"); | |
1901 return; | |
1902 } | |
1903 | |
1904 pipe_class->setInstructionCount(number_of_instructions); | |
1905 next_char(); skipws(); | |
1906 continue; | |
1907 } | |
1908 | |
1909 if (!strcmp(ident, "multiple_bundles")) { | |
1910 skipws(); | |
1911 if (_curchar != ';') { | |
1912 parse_err(SYNERR, "missing \";\" after multiple bundles\n"); | |
1913 return; | |
1914 } | |
1915 | |
1916 pipe_class->setMultipleBundles(true); | |
1917 next_char(); skipws(); | |
1918 continue; | |
1919 } | |
1920 | |
1921 if (!strcmp(ident, "has_delay_slot")) { | |
1922 skipws(); | |
1923 if (_curchar != ';') { | |
1924 parse_err(SYNERR, "missing \";\" after \"has_delay_slot\"\n"); | |
1925 return; | |
1926 } | |
1927 | |
1928 pipe_class->setBranchDelay(true); | |
1929 next_char(); skipws(); | |
1930 continue; | |
1931 } | |
1932 | |
1933 if (!strcmp(ident, "force_serialization")) { | |
1934 skipws(); | |
1935 if (_curchar != ';') { | |
1936 parse_err(SYNERR, "missing \";\" after \"force_serialization\"\n"); | |
1937 return; | |
1938 } | |
1939 | |
1940 pipe_class->setForceSerialization(true); | |
1941 next_char(); skipws(); | |
1942 continue; | |
1943 } | |
1944 | |
1945 if (!strcmp(ident, "may_have_no_code")) { | |
1946 skipws(); | |
1947 if (_curchar != ';') { | |
1948 parse_err(SYNERR, "missing \";\" after \"may_have_no_code\"\n"); | |
1949 return; | |
1950 } | |
1951 | |
1952 pipe_class->setMayHaveNoCode(true); | |
1953 next_char(); skipws(); | |
1954 continue; | |
1955 } | |
1956 | |
1957 const Form *parm = pipe_class->_localNames[ident]; | |
1958 if (parm != NULL) { | |
1959 oper = parm->is_operand(); | |
1960 if (oper == NULL && !parm->is_opclass()) { | |
1961 parse_err(SYNERR, "operand name expected at %s\n", ident); | |
1962 continue; | |
1963 } | |
1964 | |
1965 if (_curchar != ':') { | |
1966 parse_err(SYNERR, "\":\" expected at \"%c\"\n", _curchar); | |
1967 continue; | |
1968 } | |
1969 next_char(); skipws(); | |
1970 stage = get_ident(); | |
1971 if (stage == NULL) { | |
1972 parse_err(SYNERR, "pipeline stage identifier expected at \"%c\"\n", _curchar); | |
1973 continue; | |
1974 } | |
1975 | |
1976 skipws(); | |
1977 if (_curchar != '(') { | |
1978 parse_err(SYNERR, "\"(\" expected at \"%c\"\n", _curchar); | |
1979 continue; | |
1980 } | |
1981 | |
1982 next_char(); | |
1983 read_or_write = get_ident(); | |
1984 if (read_or_write == NULL) { | |
1985 parse_err(SYNERR, "\"read\" or \"write\" expected at \"%c\"\n", _curchar); | |
1986 continue; | |
1987 } | |
1988 | |
1989 is_read = strcmp(read_or_write, "read") == 0; | |
1990 is_write = strcmp(read_or_write, "write") == 0; | |
1991 if (!is_read && !is_write) { | |
1992 parse_err(SYNERR, "\"read\" or \"write\" expected at \"%c\"\n", _curchar); | |
1993 continue; | |
1994 } | |
1995 | |
1996 skipws(); | |
1997 if (_curchar != ')') { | |
1998 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar); | |
1999 continue; | |
2000 } | |
2001 | |
2002 next_char(); skipws(); | |
2003 int more_instrs = 0; | |
2004 if (_curchar == '+') { | |
2005 next_char(); skipws(); | |
2006 if (_curchar < '0' || _curchar > '9') { | |
2007 parse_err(SYNERR, "<number> expected at \"%c\"\n", _curchar); | |
2008 continue; | |
2009 } | |
2010 while (_curchar >= '0' && _curchar <= '9') { | |
2011 more_instrs *= 10; | |
2012 more_instrs += _curchar - '0'; | |
2013 next_char(); | |
2014 } | |
2015 skipws(); | |
2016 } | |
2017 | |
2018 PipeClassOperandForm *pipe_operand = new PipeClassOperandForm(stage, is_write, more_instrs); | |
2019 pipe_class->_localUsage.Insert(ident, pipe_operand); | |
2020 | |
2021 if (_curchar == '%') | |
2022 continue; | |
2023 | |
2024 if (_curchar != ';') { | |
2025 parse_err(SYNERR, "\";\" expected at \"%c\"\n", _curchar); | |
2026 continue; | |
2027 } | |
2028 next_char(); skipws(); | |
2029 continue; | |
2030 } | |
2031 | |
2032 // Scan for Resource Specifier | |
2033 const Form *res = pipeline._resdict[ident]; | |
2034 if (res != NULL) { | |
2035 int cyclecnt = 1; | |
2036 if (_curchar != ':') { | |
2037 parse_err(SYNERR, "\":\" expected at \"%c\"\n", _curchar); | |
2038 continue; | |
2039 } | |
2040 next_char(); skipws(); | |
2041 stage = get_ident(); | |
2042 if (stage == NULL) { | |
2043 parse_err(SYNERR, "pipeline stage identifier expected at \"%c\"\n", _curchar); | |
2044 continue; | |
2045 } | |
2046 | |
2047 skipws(); | |
2048 if (_curchar == '(') { | |
2049 next_char(); | |
2050 cyclecnt = get_int(); | |
2051 | |
2052 skipws(); | |
2053 if (_curchar != ')') { | |
2054 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar); | |
2055 continue; | |
2056 } | |
2057 | |
2058 next_char(); skipws(); | |
2059 } | |
2060 | |
2061 PipeClassResourceForm *resource = new PipeClassResourceForm(ident, stage, cyclecnt); | |
2062 int stagenum = pipeline._stages.index(stage); | |
2063 if (pipeline._maxcycleused < (stagenum+cyclecnt)) | |
2064 pipeline._maxcycleused = (stagenum+cyclecnt); | |
2065 pipe_class->_resUsage.addForm(resource); | |
2066 | |
2067 if (_curchar == '%') | |
2068 continue; | |
2069 | |
2070 if (_curchar != ';') { | |
2071 parse_err(SYNERR, "\";\" expected at \"%c\"\n", _curchar); | |
2072 continue; | |
2073 } | |
2074 next_char(); skipws(); | |
2075 continue; | |
2076 } | |
2077 | |
2078 parse_err(SYNERR, "resource expected at \"%s\"\n", ident); | |
2079 return; | |
2080 } while(_curchar != '%'); | |
2081 | |
2082 next_char(); | |
2083 if (_curchar != '}') { | |
2084 parse_err(SYNERR, "missing \"%}\" in pipe_class definition\n"); | |
2085 return; | |
2086 } | |
2087 | |
2088 next_char(); | |
2089 } | |
2090 | |
2091 //------------------------------peep_parse------------------------------------- | |
2092 void ADLParser::peep_parse(void) { | |
2093 Peephole *peep; // Pointer to current peephole rule form | |
2094 char *desc = NULL; // String representation of rule | |
2095 | |
2096 skipws(); // Skip leading whitespace | |
2097 | |
2098 peep = new Peephole(); // Build new Peephole object | |
2099 // Check for open block sequence | |
2100 skipws(); // Skip leading whitespace | |
2101 if (_curchar == '%' && *(_ptr+1) == '{') { | |
2102 next_char(); next_char(); // Skip "%{" | |
2103 skipws(); | |
2104 while (_curchar != '%' && *(_ptr+1) != '}') { | |
2105 char *token = get_ident(); | |
2106 if (token == NULL) { | |
2107 parse_err(SYNERR, "missing identifier inside peephole rule.\n"); | |
2108 return; | |
2109 } | |
2110 // check for legal subsections of peephole rule | |
2111 if (strcmp(token,"peepmatch")==0) { | |
2112 peep_match_parse(*peep); } | |
2113 else if (strcmp(token,"peepconstraint")==0) { | |
2114 peep_constraint_parse(*peep); } | |
2115 else if (strcmp(token,"peepreplace")==0) { | |
2116 peep_replace_parse(*peep); } | |
2117 else { | |
2118 parse_err(SYNERR, "expected peepmatch, peepconstraint, or peepreplace for identifier %s.\n", token); | |
2119 } | |
2120 skipws(); | |
2121 } | |
2122 } | |
2123 else { | |
2124 parse_err(SYNERR, "Missing %%{ ... %%} block after peephole keyword.\n"); | |
2125 return; | |
2126 } | |
2127 next_char(); // Skip past '%' | |
2128 next_char(); // Skip past '}' | |
2129 } | |
2130 | |
2131 // ******************** Private Level 2 Parse Functions ******************** | |
2132 //------------------------------constraint_parse------------------------------ | |
2133 Constraint *ADLParser::constraint_parse(void) { | |
2134 char *func; | |
2135 char *arg; | |
2136 | |
2137 // Check for constraint expression | |
2138 skipws(); | |
2139 if (_curchar != '(') { | |
2140 parse_err(SYNERR, "missing constraint expression, (...)\n"); | |
2141 return NULL; | |
2142 } | |
2143 next_char(); // Skip past '(' | |
2144 | |
2145 // Get constraint function | |
2146 skipws(); | |
2147 func = get_ident(); | |
2148 if (func == NULL) { | |
2149 parse_err(SYNERR, "missing function in constraint expression.\n"); | |
2150 return NULL; | |
2151 } | |
2152 if (strcmp(func,"ALLOC_IN_RC")==0 | |
2153 || strcmp(func,"IS_R_CLASS")==0) { | |
2154 // Check for '(' before argument | |
2155 skipws(); | |
2156 if (_curchar != '(') { | |
2157 parse_err(SYNERR, "missing '(' for constraint function's argument.\n"); | |
2158 return NULL; | |
2159 } | |
2160 next_char(); | |
2161 | |
2162 // Get it's argument | |
2163 skipws(); | |
2164 arg = get_ident(); | |
2165 if (arg == NULL) { | |
2166 parse_err(SYNERR, "missing argument for constraint function %s\n",func); | |
2167 return NULL; | |
2168 } | |
2169 // Check for ')' after argument | |
2170 skipws(); | |
2171 if (_curchar != ')') { | |
2172 parse_err(SYNERR, "missing ')' after constraint function argument %s\n",arg); | |
2173 return NULL; | |
2174 } | |
2175 next_char(); | |
2176 } else { | |
2177 parse_err(SYNERR, "Invalid constraint function %s\n",func); | |
2178 return NULL; | |
2179 } | |
2180 | |
2181 // Check for closing paren and ';' | |
2182 skipws(); | |
2183 if (_curchar != ')') { | |
2184 parse_err(SYNERR, "Missing ')' for constraint function %s\n",func); | |
2185 return NULL; | |
2186 } | |
2187 next_char(); | |
2188 skipws(); | |
2189 if (_curchar != ';') { | |
2190 parse_err(SYNERR, "Missing ';' after constraint.\n"); | |
2191 return NULL; | |
2192 } | |
2193 next_char(); | |
2194 | |
2195 // Create new "Constraint" | |
2196 Constraint *constraint = new Constraint(func,arg); | |
2197 return constraint; | |
2198 } | |
2199 | |
2200 //------------------------------constr_parse----------------------------------- | |
2201 ConstructRule *ADLParser::construct_parse(void) { | |
2202 return NULL; | |
2203 } | |
2204 | |
2205 | |
2206 //------------------------------reg_def_parse---------------------------------- | |
2207 void ADLParser::reg_def_parse(void) { | |
2208 char *rname; // Name of register being defined | |
2209 | |
2210 // Get register name | |
2211 skipws(); // Skip whitespace | |
2212 rname = get_ident(); | |
2213 if (rname == NULL) { | |
2214 parse_err(SYNERR, "missing register name after reg_def\n"); | |
2215 return; | |
2216 } | |
2217 | |
2218 // Check for definition of register calling convention (save on call, ...), | |
2219 // register save type, and register encoding value. | |
2220 skipws(); | |
2221 char *callconv = NULL; | |
2222 char *c_conv = NULL; | |
2223 char *idealtype = NULL; | |
2224 char *encoding = NULL; | |
2225 char *concrete = NULL; | |
2226 if (_curchar == '(') { | |
2227 next_char(); | |
2228 callconv = get_ident(); | |
2229 // Parse the internal calling convention, must be NS, SOC, SOE, or AS. | |
2230 if (callconv == NULL) { | |
2231 parse_err(SYNERR, "missing register calling convention value\n"); | |
2232 return; | |
2233 } | |
2234 if(strcmp(callconv, "SOC") && strcmp(callconv,"SOE") && | |
2235 strcmp(callconv, "NS") && strcmp(callconv, "AS")) { | |
2236 parse_err(SYNERR, "invalid value for register calling convention\n"); | |
2237 } | |
2238 skipws(); | |
2239 if (_curchar != ',') { | |
2240 parse_err(SYNERR, "missing comma in register definition statement\n"); | |
2241 return; | |
2242 } | |
2243 next_char(); | |
2244 | |
2245 // Parse the native calling convention, must be NS, SOC, SOE, AS | |
2246 c_conv = get_ident(); | |
2247 if (c_conv == NULL) { | |
2248 parse_err(SYNERR, "missing register native calling convention value\n"); | |
2249 return; | |
2250 } | |
2251 if(strcmp(c_conv, "SOC") && strcmp(c_conv,"SOE") && | |
2252 strcmp(c_conv, "NS") && strcmp(c_conv, "AS")) { | |
2253 parse_err(SYNERR, "invalid value for register calling convention\n"); | |
2254 } | |
2255 skipws(); | |
2256 if (_curchar != ',') { | |
2257 parse_err(SYNERR, "missing comma in register definition statement\n"); | |
2258 return; | |
2259 } | |
2260 next_char(); | |
2261 skipws(); | |
2262 | |
2263 // Parse the ideal save type | |
2264 idealtype = get_ident(); | |
2265 if (idealtype == NULL) { | |
2266 parse_err(SYNERR, "missing register save type value\n"); | |
2267 return; | |
2268 } | |
2269 skipws(); | |
2270 if (_curchar != ',') { | |
2271 parse_err(SYNERR, "missing comma in register definition statement\n"); | |
2272 return; | |
2273 } | |
2274 next_char(); | |
2275 skipws(); | |
2276 | |
2277 // Parse the encoding value | |
2278 encoding = get_expr("encoding", ","); | |
2279 if (encoding == NULL) { | |
2280 parse_err(SYNERR, "missing register encoding value\n"); | |
2281 return; | |
2282 } | |
2283 trim(encoding); | |
2284 if (_curchar != ',') { | |
2285 parse_err(SYNERR, "missing comma in register definition statement\n"); | |
2286 return; | |
2287 } | |
2288 next_char(); | |
2289 skipws(); | |
2290 // Parse the concrete name type | |
2291 // concrete = get_ident(); | |
2292 concrete = get_expr("concrete", ")"); | |
2293 if (concrete == NULL) { | |
2294 parse_err(SYNERR, "missing vm register name value\n"); | |
2295 return; | |
2296 } | |
2297 | |
2298 if (_curchar != ')') { | |
2299 parse_err(SYNERR, "missing ')' in register definition statement\n"); | |
2300 return; | |
2301 } | |
2302 next_char(); | |
2303 } | |
2304 | |
2305 // Check for closing ';' | |
2306 skipws(); | |
2307 if (_curchar != ';') { | |
2308 parse_err(SYNERR, "missing ';' after reg_def\n"); | |
2309 return; | |
2310 } | |
2311 next_char(); // move past ';' | |
2312 | |
2313 // Debug Stuff | |
2314 if (_AD._adl_debug > 1) { | |
2315 fprintf(stderr,"Register Definition: %s ( %s, %s %s )\n", rname, | |
2316 (callconv ? callconv : ""), (c_conv ? c_conv : ""), concrete); | |
2317 } | |
2318 | |
2319 // Record new register definition. | |
2320 _AD._register->addRegDef(rname, callconv, c_conv, idealtype, encoding, concrete); | |
2321 return; | |
2322 } | |
2323 | |
2324 //------------------------------reg_class_parse-------------------------------- | |
2325 void ADLParser::reg_class_parse(void) { | |
2326 char *cname; // Name of register class being defined | |
2327 | |
2328 // Get register class name | |
2329 skipws(); // Skip leading whitespace | |
2330 cname = get_ident(); | |
2331 if (cname == NULL) { | |
2332 parse_err(SYNERR, "missing register class name after 'reg_class'\n"); | |
2333 return; | |
2334 } | |
2335 // Debug Stuff | |
2336 if (_AD._adl_debug >1) fprintf(stderr,"Register Class: %s\n", cname); | |
2337 | |
2338 RegClass *reg_class = _AD._register->addRegClass(cname); | |
2339 | |
2340 // Collect registers in class | |
2341 skipws(); | |
2342 if (_curchar == '(') { | |
2343 next_char(); // Skip '(' | |
2344 skipws(); | |
2345 while (_curchar != ')') { | |
2346 char *rname = get_ident(); | |
2347 if (rname==NULL) { | |
2348 parse_err(SYNERR, "missing identifier inside reg_class list.\n"); | |
2349 return; | |
2350 } | |
2351 RegDef *regDef = _AD._register->getRegDef(rname); | |
2352 reg_class->addReg(regDef); // add regDef to regClass | |
2353 | |
2354 // Check for ',' and position to next token. | |
2355 skipws(); | |
2356 if (_curchar == ',') { | |
2357 next_char(); // Skip trailing ',' | |
2358 skipws(); | |
2359 } | |
2360 } | |
2361 next_char(); // Skip closing ')' | |
2362 } | |
2363 | |
2364 // Check for terminating ';' | |
2365 skipws(); | |
2366 if (_curchar != ';') { | |
2367 parse_err(SYNERR, "missing ';' at end of reg_class definition.\n"); | |
2368 return; | |
2369 } | |
2370 next_char(); // Skip trailing ';' | |
2371 | |
2372 // Check RegClass size, must be <= 32 registers in class. | |
2373 | |
2374 return; | |
2375 } | |
2376 | |
2377 //------------------------------alloc_class_parse------------------------------ | |
2378 void ADLParser::alloc_class_parse(void) { | |
2379 char *name; // Name of allocation class being defined | |
2380 | |
2381 // Get allocation class name | |
2382 skipws(); // Skip leading whitespace | |
2383 name = get_ident(); | |
2384 if (name == NULL) { | |
2385 parse_err(SYNERR, "missing allocation class name after 'reg_class'\n"); | |
2386 return; | |
2387 } | |
2388 // Debug Stuff | |
2389 if (_AD._adl_debug >1) fprintf(stderr,"Allocation Class: %s\n", name); | |
2390 | |
2391 AllocClass *alloc_class = _AD._register->addAllocClass(name); | |
2392 | |
2393 // Collect registers in class | |
2394 skipws(); | |
2395 if (_curchar == '(') { | |
2396 next_char(); // Skip '(' | |
2397 skipws(); | |
2398 while (_curchar != ')') { | |
2399 char *rname = get_ident(); | |
2400 if (rname==NULL) { | |
2401 parse_err(SYNERR, "missing identifier inside reg_class list.\n"); | |
2402 return; | |
2403 } | |
2404 // Check if name is a RegDef | |
2405 RegDef *regDef = _AD._register->getRegDef(rname); | |
2406 if (regDef) { | |
2407 alloc_class->addReg(regDef); // add regDef to allocClass | |
2408 } else { | |
2409 | |
2410 // name must be a RegDef or a RegClass | |
2411 parse_err(SYNERR, "name %s should be a previously defined reg_def.\n", rname); | |
2412 return; | |
2413 } | |
2414 | |
2415 // Check for ',' and position to next token. | |
2416 skipws(); | |
2417 if (_curchar == ',') { | |
2418 next_char(); // Skip trailing ',' | |
2419 skipws(); | |
2420 } | |
2421 } | |
2422 next_char(); // Skip closing ')' | |
2423 } | |
2424 | |
2425 // Check for terminating ';' | |
2426 skipws(); | |
2427 if (_curchar != ';') { | |
2428 parse_err(SYNERR, "missing ';' at end of reg_class definition.\n"); | |
2429 return; | |
2430 } | |
2431 next_char(); // Skip trailing ';' | |
2432 | |
2433 return; | |
2434 } | |
2435 | |
2436 //------------------------------peep_match_child_parse------------------------- | |
2437 InstructForm *ADLParser::peep_match_child_parse(PeepMatch &match, int parent, int &position, int input){ | |
2438 char *token = NULL; | |
2439 int lparen = 0; // keep track of parenthesis nesting depth | |
2440 int rparen = 0; // position of instruction at this depth | |
2441 InstructForm *inst_seen = NULL; | |
2442 InstructForm *child_seen = NULL; | |
2443 | |
2444 // Walk the match tree, | |
2445 // Record <parent, position, instruction name, input position> | |
2446 while ( lparen >= rparen ) { | |
2447 skipws(); | |
2448 // Left paren signals start of an input, collect with recursive call | |
2449 if (_curchar == '(') { | |
2450 ++lparen; | |
2451 next_char(); | |
2452 child_seen = peep_match_child_parse(match, parent, position, rparen); | |
2453 } | |
2454 // Right paren signals end of an input, may be more | |
2455 else if (_curchar == ')') { | |
2456 ++rparen; | |
2457 if( rparen == lparen ) { // IF rparen matches an lparen I've seen | |
2458 next_char(); // move past ')' | |
2459 } else { // ELSE leave ')' for parent | |
2460 assert( rparen == lparen + 1, "Should only see one extra ')'"); | |
2461 // if an instruction was not specified for this paren-pair | |
2462 if( ! inst_seen ) { // record signal entry | |
2463 match.add_instruction( parent, position, NameList::_signal, input ); | |
2464 ++position; | |
2465 } | |
2466 // ++input; // TEMPORARY | |
2467 return inst_seen; | |
2468 } | |
2469 } | |
2470 // if no parens, then check for instruction name | |
2471 // This instruction is the parent of a sub-tree | |
2472 else if ((token = get_ident_dup()) != NULL) { | |
2473 const Form *form = _AD._globalNames[token]; | |
2474 if (form) { | |
2475 InstructForm *inst = form->is_instruction(); | |
2476 // Record the first instruction at this level | |
2477 if( inst_seen == NULL ) { | |
2478 inst_seen = inst; | |
2479 } | |
2480 if (inst) { | |
2481 match.add_instruction( parent, position, token, input ); | |
2482 parent = position; | |
2483 ++position; | |
2484 } else { | |
2485 parse_err(SYNERR, "instruction name expected at identifier %s.\n", | |
2486 token); | |
2487 return inst_seen; | |
2488 } | |
2489 } | |
2490 else { | |
2491 parse_err(SYNERR, "missing identifier in peepmatch rule.\n"); | |
2492 return NULL; | |
2493 } | |
2494 } | |
2495 else { | |
2496 parse_err(SYNERR, "missing identifier in peepmatch rule.\n"); | |
2497 return NULL; | |
2498 } | |
2499 | |
2500 } // end while | |
2501 | |
2502 assert( false, "ShouldNotReachHere();"); | |
2503 return NULL; | |
2504 } | |
2505 | |
2506 //------------------------------peep_match_parse------------------------------- | |
2507 // Syntax for a peepmatch rule | |
2508 // | |
2509 // peepmatch ( root_instr_name [(instruction subtree)] [,(instruction subtree)]* ); | |
2510 // | |
2511 void ADLParser::peep_match_parse(Peephole &peep) { | |
2512 | |
2513 skipws(); | |
2514 // Check the structure of the rule | |
2515 // Check for open paren | |
2516 if (_curchar != '(') { | |
2517 parse_err(SYNERR, "missing '(' at start of peepmatch rule.\n"); | |
2518 return; | |
2519 } | |
2520 next_char(); // skip '(' | |
2521 | |
2522 // Construct PeepMatch and parse the peepmatch rule. | |
2523 PeepMatch *match = new PeepMatch(_ptr); | |
2524 int parent = -1; // parent of root | |
2525 int position = 0; // zero-based positions | |
2526 int input = 0; // input position in parent's operands | |
2527 InstructForm *root= peep_match_child_parse( *match, parent, position, input); | |
2528 if( root == NULL ) { | |
2529 parse_err(SYNERR, "missing instruction-name at start of peepmatch.\n"); | |
2530 return; | |
2531 } | |
2532 | |
2533 if( _curchar != ')' ) { | |
2534 parse_err(SYNERR, "missing ')' at end of peepmatch.\n"); | |
2535 return; | |
2536 } | |
2537 next_char(); // skip ')' | |
2538 | |
2539 // Check for closing semicolon | |
2540 skipws(); | |
2541 if( _curchar != ';' ) { | |
2542 parse_err(SYNERR, "missing ';' at end of peepmatch.\n"); | |
2543 return; | |
2544 } | |
2545 next_char(); // skip ';' | |
2546 | |
2547 // Store match into peep, and store peep into instruction | |
2548 peep.add_match(match); | |
2549 root->append_peephole(&peep); | |
2550 } | |
2551 | |
2552 //------------------------------peep_constraint_parse-------------------------- | |
2553 // Syntax for a peepconstraint rule | |
2554 // A parenthesized list of relations between operands in peepmatch subtree | |
2555 // | |
2556 // peepconstraint %{ | |
2557 // (instruction_number.operand_name | |
2558 // relational_op | |
2559 // instruction_number.operand_name OR register_name | |
2560 // [, ...] ); | |
2561 // | |
2562 // // instruction numbers are zero-based using topological order in peepmatch | |
2563 // | |
2564 void ADLParser::peep_constraint_parse(Peephole &peep) { | |
2565 | |
2566 skipws(); | |
2567 // Check the structure of the rule | |
2568 // Check for open paren | |
2569 if (_curchar != '(') { | |
2570 parse_err(SYNERR, "missing '(' at start of peepconstraint rule.\n"); | |
2571 return; | |
2572 } | |
2573 else { | |
2574 next_char(); // Skip '(' | |
2575 } | |
2576 | |
2577 // Check for a constraint | |
2578 skipws(); | |
2579 while( _curchar != ')' ) { | |
2580 // Get information on the left instruction and its operand | |
2581 // left-instructions's number | |
2582 intptr_t left_inst = get_int(); | |
2583 // Left-instruction's operand | |
2584 skipws(); | |
2585 if( _curchar != '.' ) { | |
2586 parse_err(SYNERR, "missing '.' in peepconstraint after instruction number.\n"); | |
2587 return; | |
2588 } | |
2589 next_char(); // Skip '.' | |
2590 char *left_op = get_ident_dup(); | |
2591 | |
2592 skipws(); | |
2593 // Collect relational operator | |
2594 char *relation = get_relation_dup(); | |
2595 | |
2596 skipws(); | |
2597 // Get information on the right instruction and its operand | |
2598 intptr_t right_inst; // Right-instructions's number | |
2599 if( isdigit(_curchar) ) { | |
2600 right_inst = get_int(); | |
2601 // Right-instruction's operand | |
2602 skipws(); | |
2603 if( _curchar != '.' ) { | |
2604 parse_err(SYNERR, "missing '.' in peepconstraint after instruction number.\n"); | |
2605 return; | |
2606 } | |
2607 next_char(); // Skip '.' | |
2608 } else { | |
2609 right_inst = -1; // Flag as being a register constraint | |
2610 } | |
2611 | |
2612 char *right_op = get_ident_dup(); | |
2613 | |
2614 // Construct the next PeepConstraint | |
2615 PeepConstraint *constraint = new PeepConstraint( left_inst, left_op, | |
2616 relation, | |
2617 right_inst, right_op ); | |
2618 // And append it to the list for this peephole rule | |
2619 peep.append_constraint( constraint ); | |
2620 | |
2621 // Check for another constraint, or end of rule | |
2622 skipws(); | |
2623 if( _curchar == ',' ) { | |
2624 next_char(); // Skip ',' | |
2625 skipws(); | |
2626 } | |
2627 else if( _curchar != ')' ) { | |
2628 parse_err(SYNERR, "expected ',' or ')' after peephole constraint.\n"); | |
2629 return; | |
2630 } | |
2631 } // end while( processing constraints ) | |
2632 next_char(); // Skip ')' | |
2633 | |
2634 // Check for terminating ';' | |
2635 skipws(); | |
2636 if (_curchar != ';') { | |
2637 parse_err(SYNERR, "missing ';' at end of peepconstraint.\n"); | |
2638 return; | |
2639 } | |
2640 next_char(); // Skip trailing ';' | |
2641 } | |
2642 | |
2643 | |
2644 //------------------------------peep_replace_parse----------------------------- | |
2645 // Syntax for a peepreplace rule | |
2646 // root instruction name followed by a | |
2647 // parenthesized list of whitespace separated instruction.operand specifiers | |
2648 // | |
2649 // peepreplace ( instr_name ( [instruction_number.operand_name]* ) ); | |
2650 // | |
2651 // | |
2652 void ADLParser::peep_replace_parse(Peephole &peep) { | |
2653 int lparen = 0; // keep track of parenthesis nesting depth | |
2654 int rparen = 0; // keep track of parenthesis nesting depth | |
2655 int icount = 0; // count of instructions in rule for naming | |
2656 char *str = NULL; | |
2657 char *token = NULL; | |
2658 | |
2659 skipws(); | |
2660 // Check for open paren | |
2661 if (_curchar != '(') { | |
2662 parse_err(SYNERR, "missing '(' at start of peepreplace rule.\n"); | |
2663 return; | |
2664 } | |
2665 else { | |
2666 lparen++; | |
2667 next_char(); | |
2668 } | |
2669 | |
2670 // Check for root instruction | |
2671 char *inst = get_ident_dup(); | |
2672 const Form *form = _AD._globalNames[inst]; | |
2673 if( form == NULL || form->is_instruction() == NULL ) { | |
2674 parse_err(SYNERR, "Instruction name expected at start of peepreplace.\n"); | |
2675 return; | |
2676 } | |
2677 | |
2678 // Store string representation of rule into replace | |
2679 PeepReplace *replace = new PeepReplace(str); | |
2680 replace->add_instruction( inst ); | |
2681 | |
2682 skipws(); | |
2683 // Start of root's operand-list | |
2684 if (_curchar != '(') { | |
2685 parse_err(SYNERR, "missing '(' at peepreplace root's operand-list.\n"); | |
2686 return; | |
2687 } | |
2688 else { | |
2689 lparen++; | |
2690 next_char(); | |
2691 } | |
2692 | |
2693 skipws(); | |
2694 // Get the list of operands | |
2695 while( _curchar != ')' ) { | |
2696 // Get information on an instruction and its operand | |
2697 // instructions's number | |
2698 int inst_num = get_int(); | |
2699 // Left-instruction's operand | |
2700 skipws(); | |
2701 if( _curchar != '.' ) { | |
2702 parse_err(SYNERR, "missing '.' in peepreplace after instruction number.\n"); | |
2703 return; | |
2704 } | |
2705 next_char(); // Skip '.' | |
2706 char *inst_op = get_ident_dup(); | |
2707 if( inst_op == NULL ) { | |
2708 parse_err(SYNERR, "missing operand identifier in peepreplace.\n"); | |
2709 return; | |
2710 } | |
2711 | |
2712 // Record this operand's position in peepmatch | |
2713 replace->add_operand( inst_num, inst_op ); | |
2714 skipws(); | |
2715 } | |
2716 | |
2717 // Check for the end of operands list | |
2718 skipws(); | |
2719 assert( _curchar == ')', "While loop should have advanced to ')'."); | |
2720 next_char(); // Skip ')' | |
2721 | |
2722 skipws(); | |
2723 // Check for end of peepreplace | |
2724 if( _curchar != ')' ) { | |
2725 parse_err(SYNERR, "missing ')' at end of peepmatch.\n"); | |
2726 parse_err(SYNERR, "Support one replacement instruction.\n"); | |
2727 return; | |
2728 } | |
2729 next_char(); // Skip ')' | |
2730 | |
2731 // Check for closing semicolon | |
2732 skipws(); | |
2733 if( _curchar != ';' ) { | |
2734 parse_err(SYNERR, "missing ';' at end of peepreplace.\n"); | |
2735 return; | |
2736 } | |
2737 next_char(); // skip ';' | |
2738 | |
2739 // Store replace into peep | |
2740 peep.add_replace( replace ); | |
2741 } | |
2742 | |
2743 //------------------------------pred_parse------------------------------------- | |
2744 Predicate *ADLParser::pred_parse(void) { | |
2745 Predicate *predicate; // Predicate class for operand | |
2746 char *rule = NULL; // String representation of predicate | |
2747 | |
2748 skipws(); // Skip leading whitespace | |
2749 if ( (rule = get_paren_expr("pred expression")) == NULL ) { | |
2750 parse_err(SYNERR, "incorrect or missing expression for 'predicate'\n"); | |
2751 return NULL; | |
2752 } | |
2753 // Debug Stuff | |
2754 if (_AD._adl_debug > 1) fprintf(stderr,"Predicate: %s\n", rule); | |
2755 if (_curchar != ';') { | |
2756 parse_err(SYNERR, "missing ';' in predicate definition\n"); | |
2757 return NULL; | |
2758 } | |
2759 next_char(); // Point after the terminator | |
2760 | |
2761 predicate = new Predicate(rule); // Build new predicate object | |
2762 skipws(); | |
2763 return predicate; | |
2764 } | |
2765 | |
2766 | |
2767 //------------------------------ins_encode_parse_block------------------------- | |
2768 // Parse the block form of ins_encode. See ins_encode_parse for more details | |
2769 InsEncode *ADLParser::ins_encode_parse_block(InstructForm &inst) { | |
2770 // Create a new encoding name based on the name of the instruction | |
2771 // definition, which should be unique. | |
2772 const char * prefix = "__enc_"; | |
2773 char* ec_name = (char*)malloc(strlen(inst._ident) + strlen(prefix) + 1); | |
2774 sprintf(ec_name, "%s%s", prefix, inst._ident); | |
2775 | |
2776 assert(_AD._encode->encClass(ec_name) == NULL, "shouldn't already exist"); | |
2777 EncClass *encoding = _AD._encode->add_EncClass(ec_name); | |
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2778 encoding->_linenum = linenum(); |
0 | 2779 |
2780 // synthesize the arguments list for the enc_class from the | |
2781 // arguments to the instruct definition. | |
2782 const char * param = NULL; | |
2783 inst._parameters.reset(); | |
2784 while ((param = inst._parameters.iter()) != NULL) { | |
2785 OperandForm *opForm = (OperandForm*)inst._localNames[param]; | |
2786 encoding->add_parameter(opForm->_ident, param); | |
2787 } | |
2788 | |
2789 // Add the prologue to create the MacroAssembler | |
2790 encoding->add_code("\n" | |
2791 " // Define a MacroAssembler instance for use by the encoding. The\n" | |
2792 " // name is chosen to match the __ idiom used for assembly in other\n" | |
2793 " // parts of hotspot and assumes the existence of the standard\n" | |
2794 " // #define __ _masm.\n" | |
2795 " MacroAssembler _masm(&cbuf);\n"); | |
2796 | |
2797 // Parse the following %{ }% block | |
2798 enc_class_parse_block(encoding, ec_name); | |
2799 | |
2800 // Build an encoding rule which invokes the encoding rule we just | |
2801 // created, passing all arguments that we received. | |
2802 InsEncode *encrule = new InsEncode(); // Encode class for instruction | |
2803 NameAndList *params = encrule->add_encode(ec_name); | |
2804 inst._parameters.reset(); | |
2805 while ((param = inst._parameters.iter()) != NULL) { | |
2806 params->add_entry(param); | |
2807 } | |
2808 | |
2809 return encrule; | |
2810 } | |
2811 | |
2812 | |
2813 //------------------------------ins_encode_parse------------------------------- | |
2814 // Encode rules have the form | |
2815 // ins_encode( encode_class_name(parameter_list), ... ); | |
2816 // | |
2817 // The "encode_class_name" must be defined in the encode section | |
2818 // The parameter list contains $names that are locals. | |
2819 // | |
2820 // Alternatively it can be written like this: | |
2821 // | |
2822 // ins_encode %{ | |
2823 // ... // body | |
2824 // %} | |
2825 // | |
2826 // which synthesizes a new encoding class taking the same arguments as | |
2827 // the InstructForm, and automatically prefixes the definition with: | |
2828 // | |
2829 // MacroAssembler masm(&cbuf);\n"); | |
2830 // | |
2831 // making it more compact to take advantage of the MacroAssembler and | |
2832 // placing the assembly closer to it's use by instructions. | |
2833 InsEncode *ADLParser::ins_encode_parse(InstructForm &inst) { | |
2834 | |
2835 // Parse encode class name | |
2836 skipws(); // Skip whitespace | |
2837 if (_curchar != '(') { | |
2838 // Check for ins_encode %{ form | |
2839 if ((_curchar == '%') && (*(_ptr+1) == '{')) { | |
2840 next_char(); // Skip '%' | |
2841 next_char(); // Skip '{' | |
2842 | |
2843 // Parse the block form of ins_encode | |
2844 return ins_encode_parse_block(inst); | |
2845 } | |
2846 | |
2847 parse_err(SYNERR, "missing '%%{' or '(' in ins_encode definition\n"); | |
2848 return NULL; | |
2849 } | |
2850 next_char(); // move past '(' | |
2851 skipws(); | |
2852 | |
2853 InsEncode *encrule = new InsEncode(); // Encode class for instruction | |
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2854 encrule->_linenum = linenum(); |
0 | 2855 char *ec_name = NULL; // String representation of encode rule |
2856 // identifier is optional. | |
2857 while (_curchar != ')') { | |
2858 ec_name = get_ident(); | |
2859 if (ec_name == NULL) { | |
2860 parse_err(SYNERR, "Invalid encode class name after 'ins_encode('.\n"); | |
2861 return NULL; | |
2862 } | |
2863 // Check that encoding is defined in the encode section | |
2864 EncClass *encode_class = _AD._encode->encClass(ec_name); | |
2865 if (encode_class == NULL) { | |
2866 // Like to defer checking these till later... | |
2867 // parse_err(WARN, "Using an undefined encode class '%s' in 'ins_encode'.\n", ec_name); | |
2868 } | |
2869 | |
2870 // Get list for encode method's parameters | |
2871 NameAndList *params = encrule->add_encode(ec_name); | |
2872 | |
2873 // Parse the parameters to this encode method. | |
2874 skipws(); | |
2875 if ( _curchar == '(' ) { | |
2876 next_char(); // move past '(' for parameters | |
2877 | |
2878 // Parse the encode method's parameters | |
2879 while (_curchar != ')') { | |
2880 char *param = get_ident_or_literal_constant("encoding operand"); | |
2881 if ( param != NULL ) { | |
2882 // Found a parameter: | |
2883 // Check it is a local name, add it to the list, then check for more | |
2884 // New: allow hex constants as parameters to an encode method. | |
2885 // New: allow parenthesized expressions as parameters. | |
2886 // New: allow "primary", "secondary", "tertiary" as parameters. | |
2887 // New: allow user-defined register name as parameter | |
2888 if ( (inst._localNames[param] == NULL) && | |
2889 !ADLParser::is_literal_constant(param) && | |
2890 (Opcode::as_opcode_type(param) == Opcode::NOT_AN_OPCODE) && | |
2891 ((_AD._register == NULL ) || (_AD._register->getRegDef(param) == NULL)) ) { | |
2892 parse_err(SYNERR, "Using non-locally defined parameter %s for encoding %s.\n", param, ec_name); | |
2893 return NULL; | |
2894 } | |
2895 params->add_entry(param); | |
2896 | |
2897 skipws(); | |
2898 if (_curchar == ',' ) { | |
2899 // More parameters to come | |
2900 next_char(); // move past ',' between parameters | |
2901 skipws(); // Skip to next parameter | |
2902 } | |
2903 else if (_curchar == ')') { | |
2904 // Done with parameter list | |
2905 } | |
2906 else { | |
2907 // Only ',' or ')' are valid after a parameter name | |
2908 parse_err(SYNERR, "expected ',' or ')' after parameter %s.\n", | |
2909 ec_name); | |
2910 return NULL; | |
2911 } | |
2912 | |
2913 } else { | |
2914 skipws(); | |
2915 // Did not find a parameter | |
2916 if (_curchar == ',') { | |
2917 parse_err(SYNERR, "Expected encode parameter before ',' in encoding %s.\n", ec_name); | |
2918 return NULL; | |
2919 } | |
2920 if (_curchar != ')') { | |
2921 parse_err(SYNERR, "Expected ')' after encode parameters.\n"); | |
2922 return NULL; | |
2923 } | |
2924 } | |
2925 } // WHILE loop collecting parameters | |
2926 next_char(); // move past ')' at end of parameters | |
2927 } // done with parameter list for encoding | |
2928 | |
2929 // Check for ',' or ')' after encoding | |
2930 skipws(); // move to character after parameters | |
2931 if ( _curchar == ',' ) { | |
2932 // Found a ',' | |
2933 next_char(); // move past ',' between encode methods | |
2934 skipws(); | |
2935 } | |
2936 else if ( _curchar != ')' ) { | |
2937 // If not a ',' then only a ')' is allowed | |
2938 parse_err(SYNERR, "Expected ')' after encoding %s.\n", ec_name); | |
2939 return NULL; | |
2940 } | |
2941 | |
2942 // Check for ',' separating parameters | |
2943 // if ( _curchar != ',' && _curchar != ')' ) { | |
2944 // parse_err(SYNERR, "expected ',' or ')' after encode method inside ins_encode.\n"); | |
2945 // return NULL; | |
2946 // } | |
2947 | |
2948 } // done parsing ins_encode methods and their parameters | |
2949 if (_curchar != ')') { | |
2950 parse_err(SYNERR, "Missing ')' at end of ins_encode description.\n"); | |
2951 return NULL; | |
2952 } | |
2953 next_char(); // move past ')' | |
2954 skipws(); // Skip leading whitespace | |
2955 | |
2956 if ( _curchar != ';' ) { | |
2957 parse_err(SYNERR, "Missing ';' at end of ins_encode.\n"); | |
2958 return NULL; | |
2959 } | |
2960 next_char(); // move past ';' | |
2961 skipws(); // be friendly to oper_parse() | |
2962 | |
2963 // Debug Stuff | |
2964 if (_AD._adl_debug > 1) fprintf(stderr,"Instruction Encode: %s\n", ec_name); | |
2965 | |
2966 return encrule; | |
2967 } | |
2968 | |
2969 | |
2970 //------------------------------size_parse----------------------------------- | |
2971 char* ADLParser::size_parse(InstructForm *instr) { | |
2972 char* sizeOfInstr = NULL; | |
2973 | |
2974 // Get value of the instruction's size | |
2975 skipws(); | |
2976 | |
2977 // Parse size | |
2978 sizeOfInstr = get_paren_expr("size expression"); | |
2979 if (sizeOfInstr == NULL) { | |
2980 parse_err(SYNERR, "size of opcode expected at %c\n", _curchar); | |
2981 return NULL; | |
2982 } | |
2983 | |
2984 skipws(); | |
2985 | |
2986 // Check for terminator | |
2987 if (_curchar != ';') { | |
2988 parse_err(SYNERR, "missing ';' in ins_attrib definition\n"); | |
2989 return NULL; | |
2990 } | |
2991 next_char(); // Advance past the ';' | |
2992 skipws(); // necessary for instr_parse() | |
2993 | |
2994 // Debug Stuff | |
2995 if (_AD._adl_debug > 1) { | |
2996 if (sizeOfInstr != NULL) { | |
2997 fprintf(stderr,"size of opcode: %s\n", sizeOfInstr); | |
2998 } | |
2999 } | |
3000 | |
3001 return sizeOfInstr; | |
3002 } | |
3003 | |
3004 | |
3005 //------------------------------opcode_parse----------------------------------- | |
3006 Opcode * ADLParser::opcode_parse(InstructForm *instr) { | |
3007 char *primary = NULL; | |
3008 char *secondary = NULL; | |
3009 char *tertiary = NULL; | |
3010 | |
3011 char *val = NULL; | |
3012 Opcode *opcode = NULL; | |
3013 | |
3014 // Get value of the instruction's opcode | |
3015 skipws(); | |
3016 if (_curchar != '(') { // Check for parenthesized operand list | |
3017 parse_err(SYNERR, "missing '(' in expand instruction declaration\n"); | |
3018 return NULL; | |
3019 } | |
3020 next_char(); // skip open paren | |
3021 skipws(); | |
3022 if (_curchar != ')') { | |
3023 // Parse primary, secondary, and tertiary opcodes, if provided. | |
3024 if ( ((primary = get_ident_or_literal_constant("primary opcode")) == NULL) ) { | |
3025 parse_err(SYNERR, "primary hex opcode expected at %c\n", _curchar); | |
3026 return NULL; | |
3027 } | |
3028 skipws(); | |
3029 if (_curchar == ',') { | |
3030 next_char(); | |
3031 skipws(); | |
3032 // Parse secondary opcode | |
3033 if ( ((secondary = get_ident_or_literal_constant("secondary opcode")) == NULL) ) { | |
3034 parse_err(SYNERR, "secondary hex opcode expected at %c\n", _curchar); | |
3035 return NULL; | |
3036 } | |
3037 skipws(); | |
3038 if (_curchar == ',') { | |
3039 next_char(); | |
3040 skipws(); | |
3041 // Parse tertiary opcode | |
3042 if ( ((tertiary = get_ident_or_literal_constant("tertiary opcode")) == NULL) ) { | |
3043 parse_err(SYNERR,"tertiary hex opcode expected at %c\n", _curchar); | |
3044 return NULL; | |
3045 } | |
3046 skipws(); | |
3047 } | |
3048 } | |
3049 skipws(); | |
3050 if (_curchar != ')') { | |
3051 parse_err(SYNERR, "Missing ')' in opcode description\n"); | |
3052 return NULL; | |
3053 } | |
3054 } | |
3055 next_char(); // Skip ')' | |
3056 skipws(); | |
3057 // Check for terminator | |
3058 if (_curchar != ';') { | |
3059 parse_err(SYNERR, "missing ';' in ins_attrib definition\n"); | |
3060 return NULL; | |
3061 } | |
3062 next_char(); // Advance past the ';' | |
3063 skipws(); // necessary for instr_parse() | |
3064 | |
3065 // Debug Stuff | |
3066 if (_AD._adl_debug > 1) { | |
3067 if (primary != NULL) fprintf(stderr,"primary opcode: %s\n", primary); | |
3068 if (secondary != NULL) fprintf(stderr,"secondary opcode: %s\n", secondary); | |
3069 if (tertiary != NULL) fprintf(stderr,"tertiary opcode: %s\n", tertiary); | |
3070 } | |
3071 | |
3072 // Generate new object and return | |
3073 opcode = new Opcode(primary, secondary, tertiary); | |
3074 return opcode; | |
3075 } | |
3076 | |
3077 | |
3078 //------------------------------interface_parse-------------------------------- | |
3079 Interface *ADLParser::interface_parse(void) { | |
3080 char *iface_name = NULL; // Name of interface class being used | |
3081 char *iface_code = NULL; // Describe components of this class | |
3082 | |
3083 // Get interface class name | |
3084 skipws(); // Skip whitespace | |
3085 if (_curchar != '(') { | |
3086 parse_err(SYNERR, "Missing '(' at start of interface description.\n"); | |
3087 return NULL; | |
3088 } | |
3089 next_char(); // move past '(' | |
3090 skipws(); | |
3091 iface_name = get_ident(); | |
3092 if (iface_name == NULL) { | |
3093 parse_err(SYNERR, "missing interface name after 'interface'.\n"); | |
3094 return NULL; | |
3095 } | |
3096 skipws(); | |
3097 if (_curchar != ')') { | |
3098 parse_err(SYNERR, "Missing ')' after name of interface.\n"); | |
3099 return NULL; | |
3100 } | |
3101 next_char(); // move past ')' | |
3102 | |
3103 // Get details of the interface, | |
3104 // for the type of interface indicated by iface_name. | |
3105 Interface *inter = NULL; | |
3106 skipws(); | |
3107 if ( _curchar != ';' ) { | |
3108 if ( strcmp(iface_name,"MEMORY_INTER") == 0 ) { | |
3109 inter = mem_interface_parse(); | |
3110 } | |
3111 else if ( strcmp(iface_name,"COND_INTER") == 0 ) { | |
3112 inter = cond_interface_parse(); | |
3113 } | |
3114 // The parse routines consume the "%}" | |
3115 | |
3116 // Check for probable extra ';' after defining block. | |
3117 if ( _curchar == ';' ) { | |
3118 parse_err(SYNERR, "Extra ';' after defining interface block.\n"); | |
3119 next_char(); // Skip ';' | |
3120 return NULL; | |
3121 } | |
3122 } else { | |
3123 next_char(); // move past ';' | |
3124 | |
3125 // Create appropriate interface object | |
3126 if ( strcmp(iface_name,"REG_INTER") == 0 ) { | |
3127 inter = new RegInterface(); | |
3128 } | |
3129 else if ( strcmp(iface_name,"CONST_INTER") == 0 ) { | |
3130 inter = new ConstInterface(); | |
3131 } | |
3132 } | |
3133 skipws(); // be friendly to oper_parse() | |
3134 // Debug Stuff | |
3135 if (_AD._adl_debug > 1) fprintf(stderr,"Interface Form: %s\n", iface_name); | |
3136 | |
3137 // Create appropriate interface object and return. | |
3138 return inter; | |
3139 } | |
3140 | |
3141 | |
3142 //------------------------------mem_interface_parse---------------------------- | |
3143 Interface *ADLParser::mem_interface_parse(void) { | |
3144 // Fields for MemInterface | |
3145 char *base = NULL; | |
3146 char *index = NULL; | |
3147 char *scale = NULL; | |
3148 char *disp = NULL; | |
3149 | |
3150 if (_curchar != '%') { | |
3151 parse_err(SYNERR, "Missing '%{' for 'interface' block.\n"); | |
3152 return NULL; | |
3153 } | |
3154 next_char(); // Skip '%' | |
3155 if (_curchar != '{') { | |
3156 parse_err(SYNERR, "Missing '%{' for 'interface' block.\n"); | |
3157 return NULL; | |
3158 } | |
3159 next_char(); // Skip '{' | |
3160 skipws(); | |
3161 do { | |
3162 char *field = get_ident(); | |
3163 if (field == NULL) { | |
3164 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%}' ending interface.\n"); | |
3165 return NULL; | |
3166 } | |
3167 if ( strcmp(field,"base") == 0 ) { | |
3168 base = interface_field_parse(); | |
3169 } | |
3170 else if ( strcmp(field,"index") == 0 ) { | |
3171 index = interface_field_parse(); | |
3172 } | |
3173 else if ( strcmp(field,"scale") == 0 ) { | |
3174 scale = interface_field_parse(); | |
3175 } | |
3176 else if ( strcmp(field,"disp") == 0 ) { | |
3177 disp = interface_field_parse(); | |
3178 } | |
3179 else { | |
3180 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%}' ending interface.\n"); | |
3181 return NULL; | |
3182 } | |
3183 } while( _curchar != '%' ); | |
3184 next_char(); // Skip '%' | |
3185 if ( _curchar != '}' ) { | |
3186 parse_err(SYNERR, "Missing '%}' for 'interface' block.\n"); | |
3187 return NULL; | |
3188 } | |
3189 next_char(); // Skip '}' | |
3190 | |
3191 // Construct desired object and return | |
3192 Interface *inter = new MemInterface(base, index, scale, disp); | |
3193 return inter; | |
3194 } | |
3195 | |
3196 | |
3197 //------------------------------cond_interface_parse--------------------------- | |
3198 Interface *ADLParser::cond_interface_parse(void) { | |
3199 char *equal; | |
3200 char *not_equal; | |
3201 char *less; | |
3202 char *greater_equal; | |
3203 char *less_equal; | |
3204 char *greater; | |
415
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3205 const char *equal_format = "eq"; |
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3206 const char *not_equal_format = "ne"; |
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3207 const char *less_format = "lt"; |
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3208 const char *greater_equal_format = "ge"; |
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3209 const char *less_equal_format = "le"; |
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3210 const char *greater_format = "gt"; |
0 | 3211 |
3212 if (_curchar != '%') { | |
3213 parse_err(SYNERR, "Missing '%{' for 'cond_interface' block.\n"); | |
3214 return NULL; | |
3215 } | |
3216 next_char(); // Skip '%' | |
3217 if (_curchar != '{') { | |
3218 parse_err(SYNERR, "Missing '%{' for 'cond_interface' block.\n"); | |
3219 return NULL; | |
3220 } | |
3221 next_char(); // Skip '{' | |
3222 skipws(); | |
3223 do { | |
3224 char *field = get_ident(); | |
3225 if (field == NULL) { | |
3226 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%}' ending interface.\n"); | |
3227 return NULL; | |
3228 } | |
3229 if ( strcmp(field,"equal") == 0 ) { | |
415
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3230 equal = interface_field_parse(&equal_format); |
0 | 3231 } |
3232 else if ( strcmp(field,"not_equal") == 0 ) { | |
415
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3233 not_equal = interface_field_parse(¬_equal_format); |
0 | 3234 } |
3235 else if ( strcmp(field,"less") == 0 ) { | |
415
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3236 less = interface_field_parse(&less_format); |
0 | 3237 } |
3238 else if ( strcmp(field,"greater_equal") == 0 ) { | |
415
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3239 greater_equal = interface_field_parse(&greater_equal_format); |
0 | 3240 } |
3241 else if ( strcmp(field,"less_equal") == 0 ) { | |
415
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3242 less_equal = interface_field_parse(&less_equal_format); |
0 | 3243 } |
3244 else if ( strcmp(field,"greater") == 0 ) { | |
415
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3245 greater = interface_field_parse(&greater_format); |
0 | 3246 } |
3247 else { | |
3248 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%}' ending interface.\n"); | |
3249 return NULL; | |
3250 } | |
3251 } while( _curchar != '%' ); | |
3252 next_char(); // Skip '%' | |
3253 if ( _curchar != '}' ) { | |
3254 parse_err(SYNERR, "Missing '%}' for 'interface' block.\n"); | |
3255 return NULL; | |
3256 } | |
3257 next_char(); // Skip '}' | |
3258 | |
3259 // Construct desired object and return | |
415
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3260 Interface *inter = new CondInterface(equal, equal_format, |
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3261 not_equal, not_equal_format, |
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3262 less, less_format, |
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3263 greater_equal, greater_equal_format, |
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3264 less_equal, less_equal_format, |
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3265 greater, greater_format); |
0 | 3266 return inter; |
3267 } | |
3268 | |
3269 | |
3270 //------------------------------interface_field_parse-------------------------- | |
415
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3271 char *ADLParser::interface_field_parse(const char ** format) { |
0 | 3272 char *iface_field = NULL; |
3273 | |
3274 // Get interface field | |
3275 skipws(); // Skip whitespace | |
3276 if (_curchar != '(') { | |
3277 parse_err(SYNERR, "Missing '(' at start of interface field.\n"); | |
3278 return NULL; | |
3279 } | |
3280 next_char(); // move past '(' | |
3281 skipws(); | |
3282 if ( _curchar != '0' && _curchar != '$' ) { | |
3283 parse_err(SYNERR, "missing or invalid interface field contents.\n"); | |
3284 return NULL; | |
3285 } | |
3286 iface_field = get_rep_var_ident(); | |
3287 if (iface_field == NULL) { | |
3288 parse_err(SYNERR, "missing or invalid interface field contents.\n"); | |
3289 return NULL; | |
3290 } | |
3291 skipws(); | |
415
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3292 if (format != NULL && _curchar == ',') { |
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3293 next_char(); |
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3294 skipws(); |
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3295 if (_curchar != '"') { |
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3296 parse_err(SYNERR, "Missing '\"' in field format .\n"); |
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3297 return NULL; |
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3298 } |
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3299 next_char(); |
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3300 char *start = _ptr; // Record start of the next string |
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3301 while ((_curchar != '"') && (_curchar != '%') && (_curchar != '\n')) { |
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3302 if (_curchar == '\\') next_char(); // superquote |
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3303 if (_curchar == '\n') parse_err(SYNERR, "newline in string"); // unimplemented! |
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3304 next_char(); |
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3305 } |
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3306 if (_curchar != '"') { |
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3307 parse_err(SYNERR, "Missing '\"' at end of field format .\n"); |
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3308 return NULL; |
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3309 } |
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3310 // If a string was found, terminate it and record in FormatRule |
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3311 if ( start != _ptr ) { |
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3312 *_ptr = '\0'; // Terminate the string |
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3313 *format = start; |
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3314 } |
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3315 next_char(); |
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3316 skipws(); |
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3317 } |
0 | 3318 if (_curchar != ')') { |
3319 parse_err(SYNERR, "Missing ')' after interface field.\n"); | |
3320 return NULL; | |
3321 } | |
3322 next_char(); // move past ')' | |
3323 skipws(); | |
3324 if ( _curchar != ';' ) { | |
3325 parse_err(SYNERR, "Missing ';' at end of interface field.\n"); | |
3326 return NULL; | |
3327 } | |
3328 next_char(); // move past ';' | |
3329 skipws(); // be friendly to interface_parse() | |
3330 | |
3331 return iface_field; | |
3332 } | |
3333 | |
3334 | |
3335 //------------------------------match_parse------------------------------------ | |
3336 MatchRule *ADLParser::match_parse(FormDict &operands) { | |
3337 MatchRule *match; // Match Rule class for instruction/operand | |
3338 char *cnstr = NULL; // Code for constructor | |
3339 int depth = 0; // Counter for matching parentheses | |
3340 int numleaves = 0; // Counter for number of leaves in rule | |
3341 | |
3342 // Parse the match rule tree | |
3343 MatchNode *mnode = matchNode_parse(operands, depth, numleaves, true); | |
3344 | |
3345 // Either there is a block with a constructor, or a ';' here | |
3346 skipws(); // Skip whitespace | |
3347 if ( _curchar == ';' ) { // Semicolon is valid terminator | |
3348 cnstr = NULL; // no constructor for this form | |
3349 next_char(); // Move past the ';', replaced with '\0' | |
3350 } | |
3351 else if ((cnstr = find_cpp_block("match constructor")) == NULL ) { | |
3352 parse_err(SYNERR, "invalid construction of match rule\n" | |
3353 "Missing ';' or invalid '%{' and '%}' constructor\n"); | |
3354 return NULL; // No MatchRule to return | |
3355 } | |
3356 if (_AD._adl_debug > 1) | |
3357 if (cnstr) fprintf(stderr,"Match Constructor: %s\n", cnstr); | |
3358 // Build new MatchRule object | |
3359 match = new MatchRule(_AD, mnode, depth, cnstr, numleaves); | |
3360 skipws(); // Skip any trailing whitespace | |
3361 return match; // Return MatchRule object | |
3362 } | |
3363 | |
3364 //------------------------------format_parse----------------------------------- | |
3365 FormatRule* ADLParser::format_parse(void) { | |
3366 char *desc = NULL; | |
3367 FormatRule *format = (new FormatRule(desc)); | |
3368 | |
3369 // Without expression form, MUST have a code block; | |
3370 skipws(); // Skip whitespace | |
3371 if ( _curchar == ';' ) { // Semicolon is valid terminator | |
3372 desc = NULL; // no constructor for this form | |
3373 next_char(); // Move past the ';', replaced with '\0' | |
3374 } | |
3375 else if ( _curchar == '%' && *(_ptr+1) == '{') { | |
3376 next_char(); // Move past the '%' | |
3377 next_char(); // Move past the '{' | |
3378 | |
3379 skipws(); | |
415
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3380 if (_curchar == '$') { |
4d9884b01ba6
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|
3381 char* ident = get_rep_var_ident(); |
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3382 if (strcmp(ident, "$$template") == 0) return template_parse(); |
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3383 parse_err(SYNERR, "Unknown \"%s\" directive in format", ident); |
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3384 return NULL; |
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|
3385 } |
0 | 3386 // Check for the opening '"' inside the format description |
3387 if ( _curchar == '"' ) { | |
3388 next_char(); // Move past the initial '"' | |
3389 if( _curchar == '"' ) { // Handle empty format string case | |
3390 *_ptr = '\0'; // Terminate empty string | |
3391 format->_strings.addName(_ptr); | |
3392 } | |
3393 | |
3394 // Collect the parts of the format description | |
3395 // (1) strings that are passed through to tty->print | |
3396 // (2) replacement/substitution variable, preceeded by a '$' | |
3397 // (3) multi-token ANSIY C style strings | |
3398 while ( true ) { | |
3399 if ( _curchar == '%' || _curchar == '\n' ) { | |
3400 if ( _curchar != '"' ) { | |
3401 parse_err(SYNERR, "missing '\"' at end of format block"); | |
3402 return NULL; | |
3403 } | |
3404 } | |
3405 | |
3406 // (1) | |
3407 // Check if there is a string to pass through to output | |
3408 char *start = _ptr; // Record start of the next string | |
3409 while ((_curchar != '$') && (_curchar != '"') && (_curchar != '%') && (_curchar != '\n')) { | |
3410 if (_curchar == '\\') next_char(); // superquote | |
3411 if (_curchar == '\n') parse_err(SYNERR, "newline in string"); // unimplemented! | |
3412 next_char(); | |
3413 } | |
3414 // If a string was found, terminate it and record in FormatRule | |
3415 if ( start != _ptr ) { | |
3416 *_ptr = '\0'; // Terminate the string | |
3417 format->_strings.addName(start); | |
3418 } | |
3419 | |
3420 // (2) | |
3421 // If we are at a replacement variable, | |
3422 // copy it and record in FormatRule | |
3423 if ( _curchar == '$' ) { | |
3424 next_char(); // Move past the '$' | |
3425 char* rep_var = get_ident(); // Nil terminate the variable name | |
3426 rep_var = strdup(rep_var);// Copy the string | |
3427 *_ptr = _curchar; // and replace Nil with original character | |
3428 format->_rep_vars.addName(rep_var); | |
3429 // Add flag to _strings list indicating we should check _rep_vars | |
3430 format->_strings.addName(NameList::_signal); | |
3431 } | |
3432 | |
3433 // (3) | |
3434 // Allow very long strings to be broken up, | |
3435 // using the ANSI C syntax "foo\n" <newline> "bar" | |
3436 if ( _curchar == '"') { | |
3437 next_char(); // Move past the '"' | |
3438 skipws(); // Skip white space before next string token | |
3439 if ( _curchar != '"') { | |
3440 break; | |
3441 } else { | |
3442 // Found one. Skip both " and the whitespace in between. | |
3443 next_char(); | |
3444 } | |
3445 } | |
3446 } // end while part of format description | |
3447 | |
3448 // Check for closing '"' and '%}' in format description | |
3449 skipws(); // Move to closing '%}' | |
3450 if ( _curchar != '%' ) { | |
3451 parse_err(SYNERR, "non-blank characters between closing '\"' and '%' in format"); | |
3452 return NULL; | |
3453 } | |
3454 } // Done with format description inside | |
3455 | |
3456 skipws(); | |
3457 // Past format description, at '%' | |
3458 if ( _curchar != '%' || *(_ptr+1) != '}' ) { | |
3459 parse_err(SYNERR, "missing '%}' at end of format block"); | |
3460 return NULL; | |
3461 } | |
3462 next_char(); // Move past the '%' | |
3463 next_char(); // Move past the '}' | |
3464 } | |
3465 else { // parameter list alone must terminate with a ';' | |
3466 parse_err(SYNERR, "missing ';' after Format expression"); | |
3467 return NULL; | |
3468 } | |
3469 // Debug Stuff | |
3470 if (_AD._adl_debug > 1) fprintf(stderr,"Format Rule: %s\n", desc); | |
3471 | |
3472 skipws(); | |
3473 return format; | |
3474 } | |
3475 | |
3476 | |
415
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3477 //------------------------------template_parse----------------------------------- |
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|
3478 FormatRule* ADLParser::template_parse(void) { |
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|
3479 char *desc = NULL; |
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|
3480 FormatRule *format = (new FormatRule(desc)); |
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3481 |
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|
3482 skipws(); |
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|
3483 while ( (_curchar != '%') && (*(_ptr+1) != '}') ) { |
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0
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|
3484 |
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parents:
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diff
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|
3485 // (1) |
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|
3486 // Check if there is a string to pass through to output |
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|
3487 char *start = _ptr; // Record start of the next string |
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0
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|
3488 while ((_curchar != '$') && ((_curchar != '%') || (*(_ptr+1) != '}')) ) { |
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|
3489 // If at the start of a comment, skip past it |
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|
3490 if( (_curchar == '/') && ((*(_ptr+1) == '/') || (*(_ptr+1) == '*')) ) { |
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|
3491 skipws_no_preproc(); |
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|
3492 } else { |
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diff
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|
3493 // ELSE advance to the next character, or start of the next line |
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|
3494 next_char_or_line(); |
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|
3495 } |
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|
3496 } |
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|
3497 // If a string was found, terminate it and record in EncClass |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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0
diff
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|
3498 if ( start != _ptr ) { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3499 *_ptr = '\0'; // Terminate the string |
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|
3500 // Add flag to _strings list indicating we should check _rep_vars |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3501 format->_strings.addName(NameList::_signal2); |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3502 format->_strings.addName(start); |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3503 } |
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|
3504 |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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parents:
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diff
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|
3505 // (2) |
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|
3506 // If we are at a replacement variable, |
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3507 // copy it and record in EncClass |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3508 if ( _curchar == '$' ) { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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diff
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|
3509 // Found replacement Variable |
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|
3510 char *rep_var = get_rep_var_ident_dup(); |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3511 if (strcmp(rep_var, "$emit") == 0) { |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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parents:
0
diff
changeset
|
3512 // switch to normal format parsing |
4d9884b01ba6
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|
3513 next_char(); |
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|
3514 next_char(); |
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changeset
|
3515 skipws(); |
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|
3516 // Check for the opening '"' inside the format description |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3517 if ( _curchar == '"' ) { |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3518 next_char(); // Move past the initial '"' |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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0
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|
3519 if( _curchar == '"' ) { // Handle empty format string case |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3520 *_ptr = '\0'; // Terminate empty string |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3521 format->_strings.addName(_ptr); |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3522 } |
4d9884b01ba6
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|
3523 |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3524 // Collect the parts of the format description |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3525 // (1) strings that are passed through to tty->print |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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0
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|
3526 // (2) replacement/substitution variable, preceeded by a '$' |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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parents:
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diff
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|
3527 // (3) multi-token ANSIY C style strings |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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parents:
0
diff
changeset
|
3528 while ( true ) { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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parents:
0
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|
3529 if ( _curchar == '%' || _curchar == '\n' ) { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3530 parse_err(SYNERR, "missing '\"' at end of format block"); |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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parents:
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|
3531 return NULL; |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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parents:
0
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changeset
|
3532 } |
4d9884b01ba6
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|
3533 |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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parents:
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diff
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|
3534 // (1) |
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changeset
|
3535 // Check if there is a string to pass through to output |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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0
diff
changeset
|
3536 char *start = _ptr; // Record start of the next string |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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parents:
0
diff
changeset
|
3537 while ((_curchar != '$') && (_curchar != '"') && (_curchar != '%') && (_curchar != '\n')) { |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3538 if (_curchar == '\\') next_char(); // superquote |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3539 if (_curchar == '\n') parse_err(SYNERR, "newline in string"); // unimplemented! |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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changeset
|
3540 next_char(); |
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changeset
|
3541 } |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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changeset
|
3542 // If a string was found, terminate it and record in FormatRule |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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diff
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|
3543 if ( start != _ptr ) { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3544 *_ptr = '\0'; // Terminate the string |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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diff
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|
3545 format->_strings.addName(start); |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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changeset
|
3546 } |
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|
3547 |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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parents:
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diff
changeset
|
3548 // (2) |
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diff
changeset
|
3549 // If we are at a replacement variable, |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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diff
changeset
|
3550 // copy it and record in FormatRule |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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parents:
0
diff
changeset
|
3551 if ( _curchar == '$' ) { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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parents:
0
diff
changeset
|
3552 next_char(); // Move past the '$' |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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0
diff
changeset
|
3553 char* rep_var = get_ident(); // Nil terminate the variable name |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3554 rep_var = strdup(rep_var);// Copy the string |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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changeset
|
3555 *_ptr = _curchar; // and replace Nil with original character |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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diff
changeset
|
3556 format->_rep_vars.addName(rep_var); |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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0
diff
changeset
|
3557 // Add flag to _strings list indicating we should check _rep_vars |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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parents:
0
diff
changeset
|
3558 format->_strings.addName(NameList::_signal); |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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0
diff
changeset
|
3559 } |
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parents:
0
diff
changeset
|
3560 |
4d9884b01ba6
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parents:
0
diff
changeset
|
3561 // (3) |
4d9884b01ba6
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parents:
0
diff
changeset
|
3562 // Allow very long strings to be broken up, |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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parents:
0
diff
changeset
|
3563 // using the ANSI C syntax "foo\n" <newline> "bar" |
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parents:
0
diff
changeset
|
3564 if ( _curchar == '"') { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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parents:
0
diff
changeset
|
3565 next_char(); // Move past the '"' |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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parents:
0
diff
changeset
|
3566 skipws(); // Skip white space before next string token |
4d9884b01ba6
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3567 if ( _curchar != '"') { |
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3568 break; |
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3569 } else { |
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3570 // Found one. Skip both " and the whitespace in between. |
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3571 next_char(); |
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3572 } |
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3573 } |
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3574 } // end while part of format description |
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3575 } |
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3576 } else { |
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3577 // Add flag to _strings list indicating we should check _rep_vars |
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3578 format->_rep_vars.addName(rep_var); |
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3579 // Add flag to _strings list indicating we should check _rep_vars |
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3580 format->_strings.addName(NameList::_signal3); |
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3581 } |
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3582 } // end while part of format description |
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3583 } |
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3584 |
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3585 skipws(); |
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3586 // Past format description, at '%' |
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3587 if ( _curchar != '%' || *(_ptr+1) != '}' ) { |
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3588 parse_err(SYNERR, "missing '%}' at end of format block"); |
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3589 return NULL; |
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3590 } |
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3591 next_char(); // Move past the '%' |
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3592 next_char(); // Move past the '}' |
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3593 |
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3594 // Debug Stuff |
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3595 if (_AD._adl_debug > 1) fprintf(stderr,"Format Rule: %s\n", desc); |
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3596 |
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3597 skipws(); |
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3598 return format; |
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3599 } |
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3600 |
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3601 |
0 | 3602 //------------------------------effect_parse----------------------------------- |
3603 void ADLParser::effect_parse(InstructForm *instr) { | |
3604 char* desc = NULL; | |
3605 | |
3606 skipws(); // Skip whitespace | |
3607 if (_curchar != '(') { | |
3608 parse_err(SYNERR, "missing '(' in effect definition\n"); | |
3609 return; | |
3610 } | |
3611 // Get list of effect-operand pairs and insert into dictionary | |
3612 else get_effectlist(instr->_effects, instr->_localNames); | |
3613 | |
3614 // Debug Stuff | |
3615 if (_AD._adl_debug > 1) fprintf(stderr,"Effect description: %s\n", desc); | |
3616 if (_curchar != ';') { | |
3617 parse_err(SYNERR, "missing ';' in Effect definition\n"); | |
3618 } | |
3619 next_char(); // Skip ';' | |
3620 | |
3621 } | |
3622 | |
3623 //------------------------------expand_parse----------------------------------- | |
3624 ExpandRule* ADLParser::expand_parse(InstructForm *instr) { | |
3625 char *ident, *ident2; | |
3626 OperandForm *oper; | |
3627 InstructForm *ins; | |
3628 NameAndList *instr_and_operands = NULL; | |
3629 ExpandRule *exp = new ExpandRule(); | |
3630 | |
3631 // Expand is a block containing an ordered list of instructions, each of | |
3632 // which has an ordered list of operands. | |
3633 // Check for block delimiter | |
3634 skipws(); // Skip leading whitespace | |
3635 if ((_curchar != '%') | |
3636 || (next_char(), (_curchar != '{')) ) { // If not open block | |
3637 parse_err(SYNERR, "missing '%{' in expand definition\n"); | |
3638 return(NULL); | |
3639 } | |
3640 next_char(); // Maintain the invariant | |
3641 do { | |
3642 ident = get_ident(); // Grab next identifier | |
3643 if (ident == NULL) { | |
3644 parse_err(SYNERR, "identifier expected at %c\n", _curchar); | |
3645 continue; | |
3646 } // Check that you have a valid instruction | |
3647 const Form *form = _globalNames[ident]; | |
3648 ins = form ? form->is_instruction() : NULL; | |
3649 if (ins == NULL) { | |
3650 // This is a new operand | |
3651 oper = form ? form->is_operand() : NULL; | |
3652 if (oper == NULL) { | |
3653 parse_err(SYNERR, "instruction/operand name expected at %s\n", ident); | |
3654 continue; | |
3655 } | |
3656 // Throw the operand on the _newopers list | |
3657 skipws(); | |
3658 ident = get_unique_ident(instr->_localNames,"Operand"); | |
3659 if (ident == NULL) { | |
3660 parse_err(SYNERR, "identifier expected at %c\n", _curchar); | |
3661 continue; | |
3662 } | |
3663 exp->_newopers.addName(ident); | |
3664 // Add new operand to LocalNames | |
3665 instr->_localNames.Insert(ident, oper); | |
3666 // Grab any constructor code and save as a string | |
3667 char *c = NULL; | |
3668 skipws(); | |
3669 if (_curchar == '%') { // Need a constructor for the operand | |
3670 c = find_cpp_block("Operand Constructor"); | |
3671 if (c == NULL) { | |
3672 parse_err(SYNERR, "Invalid code block for operand constructor\n", _curchar); | |
3673 continue; | |
3674 } | |
3675 // Add constructor to _newopconst Dict | |
3676 exp->_newopconst.Insert(ident, c); | |
3677 } | |
3678 else if (_curchar != ';') { // If no constructor, need a ; | |
3679 parse_err(SYNERR, "Missing ; in expand rule operand declaration\n"); | |
3680 continue; | |
3681 } | |
3682 else next_char(); // Skip the ; | |
3683 skipws(); | |
3684 } | |
3685 else { | |
3686 // Add instruction to list | |
3687 instr_and_operands = new NameAndList(ident); | |
3688 // Grab operands, build nameList of them, and then put into dictionary | |
3689 skipws(); | |
3690 if (_curchar != '(') { // Check for parenthesized operand list | |
3691 parse_err(SYNERR, "missing '(' in expand instruction declaration\n"); | |
3692 continue; | |
3693 } | |
3694 do { | |
3695 next_char(); // skip open paren & comma characters | |
3696 skipws(); | |
3697 if (_curchar == ')') break; | |
3698 ident2 = get_ident(); | |
3699 skipws(); | |
3700 if (ident2 == NULL) { | |
3701 parse_err(SYNERR, "identifier expected at %c\n", _curchar); | |
3702 continue; | |
3703 } // Check that you have a valid operand | |
3704 const Form *form = instr->_localNames[ident2]; | |
3705 if (!form) { | |
3706 parse_err(SYNERR, "operand name expected at %s\n", ident2); | |
3707 continue; | |
3708 } | |
3709 oper = form->is_operand(); | |
3710 if (oper == NULL && !form->is_opclass()) { | |
3711 parse_err(SYNERR, "operand name expected at %s\n", ident2); | |
3712 continue; | |
3713 } // Add operand to list | |
3714 instr_and_operands->add_entry(ident2); | |
3715 } while(_curchar == ','); | |
3716 if (_curchar != ')') { | |
3717 parse_err(SYNERR, "missing ')'in expand instruction declaration\n"); | |
3718 continue; | |
3719 } | |
3720 next_char(); | |
3721 if (_curchar != ';') { | |
3722 parse_err(SYNERR, "missing ';'in expand instruction declaration\n"); | |
3723 continue; | |
3724 } | |
3725 next_char(); | |
3726 | |
3727 // Record both instruction name and its operand list | |
3728 exp->add_instruction(instr_and_operands); | |
3729 | |
3730 skipws(); | |
3731 } | |
3732 | |
3733 } while(_curchar != '%'); | |
3734 next_char(); | |
3735 if (_curchar != '}') { | |
3736 parse_err(SYNERR, "missing '%}' in expand rule definition\n"); | |
3737 return(NULL); | |
3738 } | |
3739 next_char(); | |
3740 | |
3741 // Debug Stuff | |
3742 if (_AD._adl_debug > 1) fprintf(stderr,"Expand Rule:\n"); | |
3743 | |
3744 skipws(); | |
3745 return (exp); | |
3746 } | |
3747 | |
3748 //------------------------------rewrite_parse---------------------------------- | |
3749 RewriteRule* ADLParser::rewrite_parse(void) { | |
3750 char* params = NULL; | |
3751 char* desc = NULL; | |
3752 | |
3753 | |
3754 // This feature targeted for second generation description language. | |
3755 | |
3756 skipws(); // Skip whitespace | |
3757 // Get parameters for rewrite | |
3758 if ((params = get_paren_expr("rewrite parameters")) == NULL) { | |
3759 parse_err(SYNERR, "missing '(' in rewrite rule\n"); | |
3760 return NULL; | |
3761 } | |
3762 // Debug Stuff | |
3763 if (_AD._adl_debug > 1) fprintf(stderr,"Rewrite parameters: %s\n", params); | |
3764 | |
3765 // For now, grab entire block; | |
3766 skipws(); | |
3767 if ( (desc = find_cpp_block("rewrite block")) == NULL ) { | |
3768 parse_err(SYNERR, "incorrect or missing block for 'rewrite'.\n"); | |
3769 return NULL; | |
3770 } | |
3771 // Debug Stuff | |
3772 if (_AD._adl_debug > 1) fprintf(stderr,"Rewrite Rule: %s\n", desc); | |
3773 | |
3774 skipws(); | |
3775 return (new RewriteRule(params,desc)); | |
3776 } | |
3777 | |
3778 //------------------------------attr_parse------------------------------------- | |
3779 Attribute *ADLParser::attr_parse(char* ident) { | |
3780 Attribute *attrib; // Attribute class | |
3781 char *cost = NULL; // String representation of cost attribute | |
3782 | |
3783 skipws(); // Skip leading whitespace | |
3784 if ( (cost = get_paren_expr("attribute")) == NULL ) { | |
3785 parse_err(SYNERR, "incorrect or missing expression for 'attribute'\n"); | |
3786 return NULL; | |
3787 } | |
3788 // Debug Stuff | |
3789 if (_AD._adl_debug > 1) fprintf(stderr,"Attribute: %s\n", cost); | |
3790 if (_curchar != ';') { | |
3791 parse_err(SYNERR, "missing ';' in attribute definition\n"); | |
3792 return NULL; | |
3793 } | |
3794 next_char(); // Point after the terminator | |
3795 | |
3796 skipws(); | |
3797 attrib = new Attribute(ident,cost,INS_ATTR); // Build new predicate object | |
3798 return attrib; | |
3799 } | |
3800 | |
3801 | |
3802 //------------------------------matchNode_parse-------------------------------- | |
3803 MatchNode *ADLParser::matchNode_parse(FormDict &operands, int &depth, int &numleaves, bool atroot) { | |
3804 // Count depth of parenthesis nesting for both left and right children | |
3805 int lParens = depth; | |
3806 int rParens = depth; | |
3807 | |
3808 // MatchNode objects for left, right, and root of subtree. | |
3809 MatchNode *lChild = NULL; | |
3810 MatchNode *rChild = NULL; | |
3811 char *token; // Identifier which may be opcode or operand | |
3812 | |
3813 // Match expression starts with a '(' | |
3814 if (cur_char() != '(') | |
3815 return NULL; | |
3816 | |
3817 next_char(); // advance past '(' | |
3818 | |
3819 // Parse the opcode | |
3820 token = get_ident(); // Get identifier, opcode | |
3821 if (token == NULL) { | |
3822 parse_err(SYNERR, "missing opcode in match expression\n"); | |
3823 return NULL; | |
3824 } | |
3825 | |
3826 // Take note if we see one of a few special operations - those that are | |
3827 // treated differently on different architectures in the sense that on | |
3828 // one architecture there is a match rule and on another there isn't (so | |
3829 // a call will eventually be generated). | |
3830 | |
3831 for (int i = _last_machine_leaf + 1; i < _last_opcode; i++) { | |
3832 if (strcmp(token, NodeClassNames[i]) == 0) { | |
3833 _AD.has_match_rule(i, true); | |
3834 } | |
3835 } | |
3836 | |
3837 // Lookup the root value in the operands dict to perform substitution | |
3838 const char *result = NULL; // Result type will be filled in later | |
3839 const char *name = token; // local name associated with this node | |
3840 const char *operation = token; // remember valid operation for later | |
3841 const Form *form = operands[token]; | |
3842 OpClassForm *opcForm = form ? form->is_opclass() : NULL; | |
3843 if (opcForm != NULL) { | |
3844 // If this token is an entry in the local names table, record its type | |
3845 if (!opcForm->ideal_only()) { | |
3846 operation = opcForm->_ident; | |
3847 result = operation; // Operands result in their own type | |
3848 } | |
3849 // Otherwise it is an ideal type, and so, has no local name | |
3850 else name = NULL; | |
3851 } | |
3852 | |
3853 // Parse the operands | |
3854 skipws(); | |
3855 if (cur_char() != ')') { | |
3856 | |
3857 // Parse the left child | |
3858 if (strcmp(operation,"Set")) | |
3859 lChild = matchChild_parse(operands, lParens, numleaves, false); | |
3860 else | |
3861 lChild = matchChild_parse(operands, lParens, numleaves, true); | |
3862 | |
3863 skipws(); | |
3864 if (cur_char() != ')' ) { | |
3865 if(strcmp(operation, "Set")) | |
3866 rChild = matchChild_parse(operands,rParens,numleaves,false); | |
3867 else | |
3868 rChild = matchChild_parse(operands,rParens,numleaves,true); | |
3869 } | |
3870 } | |
3871 | |
3872 // Check for required ')' | |
3873 skipws(); | |
3874 if (cur_char() != ')') { | |
3875 parse_err(SYNERR, "missing ')' in match expression\n"); | |
3876 return NULL; | |
3877 } | |
3878 next_char(); // skip the ')' | |
3879 | |
3880 MatchNode* mroot = new MatchNode(_AD,result,name,operation,lChild,rChild); | |
3881 | |
3882 // If not the root, reduce this subtree to an internal operand | |
3883 if (!atroot) { | |
3884 mroot->build_internalop(); | |
3885 } | |
3886 // depth is greater of left and right paths. | |
3887 depth = (lParens > rParens) ? lParens : rParens; | |
3888 | |
3889 return mroot; | |
3890 } | |
3891 | |
3892 | |
3893 //------------------------------matchChild_parse------------------------------- | |
3894 MatchNode *ADLParser::matchChild_parse(FormDict &operands, int &parens, int &numleaves, bool atroot) { | |
3895 MatchNode *child = NULL; | |
3896 const char *result = NULL; | |
3897 const char *token = NULL; | |
3898 const char *opType = NULL; | |
3899 | |
3900 if (cur_char() == '(') { // child is an operation | |
3901 ++parens; | |
3902 child = matchNode_parse(operands, parens, numleaves, atroot); | |
3903 } | |
3904 else { // child is an operand | |
3905 token = get_ident(); | |
3906 const Form *form = operands[token]; | |
3907 OpClassForm *opcForm = form ? form->is_opclass() : NULL; | |
3908 if (opcForm != NULL) { | |
3909 opType = opcForm->_ident; | |
3910 result = opcForm->_ident; // an operand's result matches its type | |
3911 } else { | |
3912 parse_err(SYNERR, "undefined operand %s in match rule\n", token); | |
3913 return NULL; | |
3914 } | |
3915 | |
3916 if (opType == NULL) { | |
3917 parse_err(SYNERR, "missing type for argument '%s'\n", token); | |
3918 } | |
3919 | |
3920 child = new MatchNode(_AD, result, token, opType); | |
3921 ++numleaves; | |
3922 } | |
3923 | |
3924 return child; | |
3925 } | |
3926 | |
3927 | |
3928 | |
3929 // ******************** Private Utility Functions ************************* | |
3930 | |
3931 | |
3932 char* ADLParser::find_cpp_block(const char* description) { | |
3933 char *next; // Pointer for finding block delimiters | |
3934 char* cppBlock = NULL; // Beginning of C++ code block | |
3935 | |
3936 if (_curchar == '%') { // Encoding is a C++ expression | |
3937 next_char(); | |
3938 if (_curchar != '{') { | |
3939 parse_err(SYNERR, "missing '{' in %s \n", description); | |
3940 return NULL; | |
3941 } | |
3942 next_char(); // Skip block delimiter | |
3943 skipws_no_preproc(); // Skip leading whitespace | |
3944 cppBlock = _ptr; // Point to start of expression | |
3945 const char* file = _AD._ADL_file._name; | |
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3946 int line = linenum(); |
0 | 3947 next = _ptr + 1; |
3948 while(((_curchar != '%') || (*next != '}')) && (_curchar != '\0')) { | |
3949 next_char_or_line(); | |
3950 next = _ptr+1; // Maintain the next pointer | |
3951 } // Grab string | |
3952 if (_curchar == '\0') { | |
3953 parse_err(SYNERR, "invalid termination of %s \n", description); | |
3954 return NULL; | |
3955 } | |
3956 *_ptr = '\0'; // Terminate string | |
3957 _ptr += 2; // Skip block delimiter | |
3958 _curchar = *_ptr; // Maintain invariant | |
3959 | |
3960 // Prepend location descriptor, for debugging. | |
3961 char* location = (char *)malloc(strlen(file) + 100); | |
3962 *location = '\0'; | |
3963 if (_AD._adlocation_debug) | |
3964 sprintf(location, "#line %d \"%s\"\n", line, file); | |
3965 char* result = (char *)malloc(strlen(location) + strlen(cppBlock) + 1); | |
3966 strcpy(result, location); | |
3967 strcat(result, cppBlock); | |
3968 cppBlock = result; | |
3969 free(location); | |
3970 } | |
3971 | |
3972 return cppBlock; | |
3973 } | |
3974 | |
3975 // Move to the closing token of the expression we are currently at, | |
3976 // as defined by stop_chars. Match parens and quotes. | |
3977 char* ADLParser::get_expr(const char *desc, const char *stop_chars) { | |
3978 char* expr = NULL; | |
3979 int paren = 0; | |
3980 | |
3981 expr = _ptr; | |
3982 while (paren > 0 || !strchr(stop_chars, _curchar)) { | |
3983 if (_curchar == '(') { // Down level of nesting | |
3984 paren++; // Bump the parenthesis counter | |
3985 next_char(); // maintain the invariant | |
3986 } | |
3987 else if (_curchar == ')') { // Up one level of nesting | |
3988 if (paren == 0) { | |
3989 // Paren underflow: We didn't encounter the required stop-char. | |
3990 parse_err(SYNERR, "too many )'s, did not find %s after %s\n", | |
3991 stop_chars, desc); | |
3992 return NULL; | |
3993 } | |
3994 paren--; // Drop the parenthesis counter | |
3995 next_char(); // Maintain the invariant | |
3996 } | |
3997 else if (_curchar == '"' || _curchar == '\'') { | |
3998 int qchar = _curchar; | |
3999 while (true) { | |
4000 next_char(); | |
4001 if (_curchar == qchar) { next_char(); break; } | |
4002 if (_curchar == '\\') next_char(); // superquote | |
4003 if (_curchar == '\n' || _curchar == '\0') { | |
4004 parse_err(SYNERR, "newline in string in %s\n", desc); | |
4005 return NULL; | |
4006 } | |
4007 } | |
4008 } | |
4009 else if (_curchar == '%' && (_ptr[1] == '{' || _ptr[1] == '}')) { | |
4010 // Make sure we do not stray into the next ADLC-level form. | |
4011 parse_err(SYNERR, "unexpected %%%c in %s\n", _ptr[1], desc); | |
4012 return NULL; | |
4013 } | |
4014 else if (_curchar == '\0') { | |
4015 parse_err(SYNERR, "unexpected EOF in %s\n", desc); | |
4016 return NULL; | |
4017 } | |
4018 else { | |
4019 // Always walk over whitespace, comments, preprocessor directives, etc. | |
4020 char* pre_skip_ptr = _ptr; | |
4021 skipws(); | |
4022 // If the parser declined to make progress on whitespace, | |
4023 // skip the next character, which is therefore NOT whitespace. | |
4024 if (pre_skip_ptr == _ptr) { | |
4025 next_char(); | |
4026 } else if (pre_skip_ptr+strlen(pre_skip_ptr) != _ptr+strlen(_ptr)) { | |
4027 parse_err(SYNERR, "unimplemented: preprocessor must not elide subexpression in %s", desc); | |
4028 } | |
4029 } | |
4030 } | |
4031 | |
4032 assert(strchr(stop_chars, _curchar), "non-null return must be at stop-char"); | |
4033 *_ptr = '\0'; // Replace ')' or other stop-char with '\0' | |
4034 return expr; | |
4035 } | |
4036 | |
4037 // Helper function around get_expr | |
4038 // Sets _curchar to '(' so that get_paren_expr will search for a matching ')' | |
4039 char *ADLParser::get_paren_expr(const char *description) { | |
4040 if (_curchar != '(') // Escape if not valid starting position | |
4041 return NULL; | |
4042 next_char(); // Skip the required initial paren. | |
4043 char *token2 = get_expr(description, ")"); | |
4044 if (_curchar == ')') | |
4045 next_char(); // Skip required final paren. | |
4046 return token2; | |
4047 } | |
4048 | |
4049 //------------------------------get_ident_common------------------------------- | |
4050 // Looks for an identifier in the buffer, and turns it into a null terminated | |
4051 // string(still inside the file buffer). Returns a pointer to the string or | |
4052 // NULL if some other token is found instead. | |
4053 char *ADLParser::get_ident_common(bool do_preproc) { | |
4054 register char c; | |
4055 char *start; // Pointer to start of token | |
4056 char *end; // Pointer to end of token | |
4057 | |
4058 if( _curline == NULL ) // Return NULL at EOF. | |
4059 return NULL; | |
4060 | |
4061 skipws_common(do_preproc); // Skip whitespace before identifier | |
4062 start = end = _ptr; // Start points at first character | |
4063 end--; // unwind end by one to prepare for loop | |
4064 do { | |
4065 end++; // Increment end pointer | |
4066 c = *end; // Grab character to test | |
4067 } while ( ((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z')) | |
4068 || ((c >= '0') && (c <= '9')) | |
4069 || ((c == '_')) || ((c == ':')) || ((c == '#')) ); | |
4070 if (start == end) { // We popped out on the first try | |
4071 parse_err(SYNERR, "identifier expected at %c\n", c); | |
4072 start = NULL; | |
4073 } | |
4074 else { | |
4075 _curchar = c; // Save the first character of next token | |
4076 *end = '\0'; // NULL terminate the string in place | |
4077 } | |
4078 _ptr = end; // Reset _ptr to point to next char after token | |
4079 | |
4080 // Make sure we do not try to use #defined identifiers. If start is | |
4081 // NULL an error was already reported. | |
4082 if (do_preproc && start != NULL) { | |
4083 const char* def = _AD.get_preproc_def(start); | |
4084 if (def != NULL && strcmp(def, start)) { | |
4085 const char* def2 = _AD.get_preproc_def(def); | |
4086 if (def2 != NULL && strcmp(def2, def)) { | |
4087 parse_err(SYNERR, "unimplemented: using %s defined as %s => %s", | |
4088 start, def, def2); | |
4089 } | |
4090 start = strdup(def); | |
4091 } | |
4092 } | |
4093 | |
4094 return start; // Pointer to token in filebuf | |
4095 } | |
4096 | |
4097 //------------------------------get_ident_dup---------------------------------- | |
4098 // Looks for an identifier in the buffer, and returns a duplicate | |
4099 // or NULL if some other token is found instead. | |
4100 char *ADLParser::get_ident_dup(void) { | |
4101 char *ident = get_ident(); | |
4102 | |
4103 // Duplicate an identifier before returning and restore string. | |
4104 if( ident != NULL ) { | |
4105 ident = strdup(ident); // Copy the string | |
4106 *_ptr = _curchar; // and replace Nil with original character | |
4107 } | |
4108 | |
4109 return ident; | |
4110 } | |
4111 | |
4112 //----------------------get_ident_or_literal_constant-------------------------- | |
4113 // Looks for an identifier in the buffer, or a parenthesized expression. | |
4114 char *ADLParser::get_ident_or_literal_constant(const char* description) { | |
4115 char* param = NULL; | |
4116 skipws(); | |
4117 if (_curchar == '(') { | |
4118 // Grab a constant expression. | |
4119 param = get_paren_expr(description); | |
4120 if (param[0] != '(') { | |
4121 char* buf = (char*) malloc(strlen(param) + 3); | |
4122 sprintf(buf, "(%s)", param); | |
4123 param = buf; | |
4124 } | |
4125 assert(is_literal_constant(param), | |
4126 "expr must be recognizable as a constant"); | |
4127 } else { | |
4128 param = get_ident(); | |
4129 } | |
4130 return param; | |
4131 } | |
4132 | |
4133 //------------------------------get_rep_var_ident----------------------------- | |
4134 // Do NOT duplicate, | |
4135 // Leave nil terminator in buffer | |
4136 // Preserve initial '$'(s) in string | |
4137 char *ADLParser::get_rep_var_ident(void) { | |
4138 // Remember starting point | |
4139 char *rep_var = _ptr; | |
4140 | |
4141 // Check for replacement variable indicator '$' and pass if present | |
4142 if ( _curchar == '$' ) { | |
4143 next_char(); | |
4144 } | |
4145 // Check for a subfield indicator, a second '$', and pass if present | |
4146 if ( _curchar == '$' ) { | |
4147 next_char(); | |
4148 } | |
4149 | |
4150 // Check for a control indicator, a third '$': | |
4151 if ( _curchar == '$' ) { | |
4152 next_char(); | |
4153 } | |
4154 | |
4155 // Check for more than three '$'s in sequence, SYNERR | |
4156 if( _curchar == '$' ) { | |
4157 parse_err(SYNERR, "Replacement variables and field specifiers can not start with '$$$$'"); | |
4158 next_char(); | |
4159 return NULL; | |
4160 } | |
4161 | |
4162 // Nil terminate the variable name following the '$' | |
4163 char *rep_var_name = get_ident(); | |
4164 assert( rep_var_name != NULL, | |
4165 "Missing identifier after replacement variable indicator '$'"); | |
4166 | |
4167 return rep_var; | |
4168 } | |
4169 | |
4170 | |
4171 | |
4172 //------------------------------get_rep_var_ident_dup------------------------- | |
4173 // Return the next replacement variable identifier, skipping first '$' | |
4174 // given a pointer into a line of the buffer. | |
4175 // Null terminates string, still inside the file buffer, | |
4176 // Returns a pointer to a copy of the string, or NULL on failure | |
4177 char *ADLParser::get_rep_var_ident_dup(void) { | |
4178 if( _curchar != '$' ) return NULL; | |
4179 | |
4180 next_char(); // Move past the '$' | |
4181 char *rep_var = _ptr; // Remember starting point | |
4182 | |
4183 // Check for a subfield indicator, a second '$': | |
4184 if ( _curchar == '$' ) { | |
4185 next_char(); | |
4186 } | |
4187 | |
4188 // Check for a control indicator, a third '$': | |
4189 if ( _curchar == '$' ) { | |
4190 next_char(); | |
4191 } | |
4192 | |
4193 // Check for more than three '$'s in sequence, SYNERR | |
4194 if( _curchar == '$' ) { | |
4195 parse_err(SYNERR, "Replacement variables and field specifiers can not start with '$$$$'"); | |
4196 next_char(); | |
4197 return NULL; | |
4198 } | |
4199 | |
4200 // Nil terminate the variable name following the '$' | |
4201 char *rep_var_name = get_ident(); | |
4202 assert( rep_var_name != NULL, | |
4203 "Missing identifier after replacement variable indicator '$'"); | |
4204 rep_var = strdup(rep_var); // Copy the string | |
4205 *_ptr = _curchar; // and replace Nil with original character | |
4206 | |
4207 return rep_var; | |
4208 } | |
4209 | |
4210 | |
4211 //------------------------------get_unique_ident------------------------------ | |
4212 // Looks for an identifier in the buffer, terminates it with a NULL, | |
4213 // and checks that it is unique | |
4214 char *ADLParser::get_unique_ident(FormDict& dict, const char* nameDescription){ | |
4215 char* ident = get_ident(); | |
4216 | |
4217 if (ident == NULL) { | |
4218 parse_err(SYNERR, "missing %s identifier at %c\n", nameDescription, _curchar); | |
4219 } | |
4220 else { | |
4221 if (dict[ident] != NULL) { | |
4222 parse_err(SYNERR, "duplicate name %s for %s\n", ident, nameDescription); | |
4223 ident = NULL; | |
4224 } | |
4225 } | |
4226 | |
4227 return ident; | |
4228 } | |
4229 | |
4230 | |
4231 //------------------------------get_int---------------------------------------- | |
4232 // Looks for a character string integer in the buffer, and turns it into an int | |
4233 // invokes a parse_err if the next token is not an integer. | |
4234 // This routine does not leave the integer null-terminated. | |
4235 int ADLParser::get_int(void) { | |
4236 register char c; | |
4237 char *start; // Pointer to start of token | |
4238 char *end; // Pointer to end of token | |
4239 int result; // Storage for integer result | |
4240 | |
4241 if( _curline == NULL ) // Return NULL at EOF. | |
4242 return NULL; | |
4243 | |
4244 skipws(); // Skip whitespace before identifier | |
4245 start = end = _ptr; // Start points at first character | |
4246 c = *end; // Grab character to test | |
4247 while ((c >= '0') && (c <= '9') | |
4248 || ((c == '-') && (end == start))) { | |
4249 end++; // Increment end pointer | |
4250 c = *end; // Grab character to test | |
4251 } | |
4252 if (start == end) { // We popped out on the first try | |
4253 parse_err(SYNERR, "integer expected at %c\n", c); | |
4254 result = 0; | |
4255 } | |
4256 else { | |
4257 _curchar = c; // Save the first character of next token | |
4258 *end = '\0'; // NULL terminate the string in place | |
4259 result = atoi(start); // Convert the string to an integer | |
4260 *end = _curchar; // Restore buffer to original condition | |
4261 } | |
4262 | |
4263 // Reset _ptr to next char after token | |
4264 _ptr = end; | |
4265 | |
4266 return result; // integer | |
4267 } | |
4268 | |
4269 | |
4270 //------------------------------get_relation_dup------------------------------ | |
4271 // Looks for a relational operator in the buffer | |
4272 // invokes a parse_err if the next token is not a relation | |
4273 // This routine creates a duplicate of the string in the buffer. | |
4274 char *ADLParser::get_relation_dup(void) { | |
4275 char *result = NULL; // relational operator being returned | |
4276 | |
4277 if( _curline == NULL ) // Return NULL at EOF. | |
4278 return NULL; | |
4279 | |
4280 skipws(); // Skip whitespace before relation | |
4281 char *start = _ptr; // Store start of relational operator | |
4282 char first = *_ptr; // the first character | |
4283 if( (first == '=') || (first == '!') || (first == '<') || (first == '>') ) { | |
4284 next_char(); | |
4285 char second = *_ptr; // the second character | |
4286 if( (second == '=') ) { | |
4287 next_char(); | |
4288 char tmp = *_ptr; | |
4289 *_ptr = '\0'; // NULL terminate | |
4290 result = strdup(start); // Duplicate the string | |
4291 *_ptr = tmp; // restore buffer | |
4292 } else { | |
4293 parse_err(SYNERR, "relational operator expected at %s\n", _ptr); | |
4294 } | |
4295 } else { | |
4296 parse_err(SYNERR, "relational operator expected at %s\n", _ptr); | |
4297 } | |
4298 | |
4299 return result; | |
4300 } | |
4301 | |
4302 | |
4303 | |
4304 //------------------------------get_oplist------------------------------------- | |
4305 // Looks for identifier pairs where first must be the name of an operand, and | |
4306 // second must be a name unique in the scope of this instruction. Stores the | |
4307 // names with a pointer to the OpClassForm of their type in a local name table. | |
4308 void ADLParser::get_oplist(NameList ¶meters, FormDict &operands) { | |
4309 OpClassForm *opclass = NULL; | |
4310 char *ident = NULL; | |
4311 | |
4312 do { | |
4313 next_char(); // skip open paren & comma characters | |
4314 skipws(); | |
4315 if (_curchar == ')') break; | |
4316 | |
4317 // Get operand type, and check it against global name table | |
4318 ident = get_ident(); | |
4319 if (ident == NULL) { | |
4320 parse_err(SYNERR, "optype identifier expected at %c\n", _curchar); | |
4321 return; | |
4322 } | |
4323 else { | |
4324 const Form *form = _globalNames[ident]; | |
4325 if( form == NULL ) { | |
4326 parse_err(SYNERR, "undefined operand type %s\n", ident); | |
4327 return; | |
4328 } | |
4329 | |
4330 // Check for valid operand type | |
4331 OpClassForm *opc = form->is_opclass(); | |
4332 OperandForm *oper = form->is_operand(); | |
4333 if((oper == NULL) && (opc == NULL)) { | |
4334 parse_err(SYNERR, "identifier %s not operand type\n", ident); | |
4335 return; | |
4336 } | |
4337 opclass = opc; | |
4338 } | |
4339 // Debugging Stuff | |
4340 if (_AD._adl_debug > 1) fprintf(stderr, "\tOperand Type: %s\t", ident); | |
4341 | |
4342 // Get name of operand and add it to local name table | |
4343 if( (ident = get_unique_ident(operands, "operand")) == NULL) { | |
4344 return; | |
4345 } | |
4346 // Parameter names must not be global names. | |
4347 if( _globalNames[ident] != NULL ) { | |
4348 parse_err(SYNERR, "Reuse of global name %s as operand.\n",ident); | |
4349 return; | |
4350 } | |
4351 operands.Insert(ident, opclass); | |
4352 parameters.addName(ident); | |
4353 | |
4354 // Debugging Stuff | |
4355 if (_AD._adl_debug > 1) fprintf(stderr, "\tOperand Name: %s\n", ident); | |
4356 skipws(); | |
4357 } while(_curchar == ','); | |
4358 | |
4359 if (_curchar != ')') parse_err(SYNERR, "missing ')'\n"); | |
4360 else { | |
4361 next_char(); // set current character position past the close paren | |
4362 } | |
4363 } | |
4364 | |
4365 | |
4366 //------------------------------get_effectlist--------------------------------- | |
4367 // Looks for identifier pairs where first must be the name of a pre-defined, | |
4368 // effect, and the second must be the name of an operand defined in the | |
4369 // operand list of this instruction. Stores the names with a pointer to the | |
4370 // effect form in a local effects table. | |
4371 void ADLParser::get_effectlist(FormDict &effects, FormDict &operands) { | |
4372 OperandForm *opForm; | |
4373 Effect *eForm; | |
4374 char *ident; | |
4375 | |
4376 do { | |
4377 next_char(); // skip open paren & comma characters | |
4378 skipws(); | |
4379 if (_curchar == ')') break; | |
4380 | |
4381 // Get effect type, and check it against global name table | |
4382 ident = get_ident(); | |
4383 if (ident == NULL) { | |
4384 parse_err(SYNERR, "effect type identifier expected at %c\n", _curchar); | |
4385 return; | |
4386 } | |
4387 else { | |
4388 // Check for valid effect type | |
4389 const Form *form = _globalNames[ident]; | |
4390 if( form == NULL ) { | |
4391 parse_err(SYNERR, "undefined effect type %s\n", ident); | |
4392 return; | |
4393 } | |
4394 else { | |
4395 if( (eForm = form->is_effect()) == NULL) { | |
4396 parse_err(SYNERR, "identifier %s not effect type\n", ident); | |
4397 return; | |
4398 } | |
4399 } | |
4400 } | |
4401 // Debugging Stuff | |
4402 if (_AD._adl_debug > 1) fprintf(stderr, "\tEffect Type: %s\t", ident); | |
4403 skipws(); | |
4404 // Get name of operand and check that it is in the local name table | |
4405 if( (ident = get_unique_ident(effects, "effect")) == NULL) { | |
4406 parse_err(SYNERR, "missing operand identifier in effect list\n"); | |
4407 return; | |
4408 } | |
4409 const Form *form = operands[ident]; | |
4410 opForm = form ? form->is_operand() : NULL; | |
4411 if( opForm == NULL ) { | |
4412 if( form && form->is_opclass() ) { | |
4413 const char* cname = form->is_opclass()->_ident; | |
4414 parse_err(SYNERR, "operand classes are illegal in effect lists (found %s %s)\n", cname, ident); | |
4415 } else { | |
4416 parse_err(SYNERR, "undefined operand %s in effect list\n", ident); | |
4417 } | |
4418 return; | |
4419 } | |
4420 // Add the pair to the effects table | |
4421 effects.Insert(ident, eForm); | |
4422 // Debugging Stuff | |
4423 if (_AD._adl_debug > 1) fprintf(stderr, "\tOperand Name: %s\n", ident); | |
4424 skipws(); | |
4425 } while(_curchar == ','); | |
4426 | |
4427 if (_curchar != ')') parse_err(SYNERR, "missing ')'\n"); | |
4428 else { | |
4429 next_char(); // set current character position past the close paren | |
4430 } | |
4431 } | |
4432 | |
4433 | |
4434 //------------------------------preproc_define--------------------------------- | |
4435 // A "#define" keyword has been seen, so parse the rest of the line. | |
4436 void ADLParser::preproc_define(void) { | |
4437 char* flag = get_ident_no_preproc(); | |
4438 skipws_no_preproc(); | |
4439 // only #define x y is supported for now | |
4440 char* def = get_ident_no_preproc(); | |
4441 _AD.set_preproc_def(flag, def); | |
4442 skipws_no_preproc(); | |
4443 if (_curchar != '\n') { | |
4444 parse_err(SYNERR, "non-identifier in preprocessor definition\n"); | |
4445 } | |
4446 } | |
4447 | |
4448 //------------------------------preproc_undef---------------------------------- | |
4449 // An "#undef" keyword has been seen, so parse the rest of the line. | |
4450 void ADLParser::preproc_undef(void) { | |
4451 char* flag = get_ident_no_preproc(); | |
4452 skipws_no_preproc(); | |
4453 ensure_end_of_line(); | |
4454 _AD.set_preproc_def(flag, NULL); | |
4455 } | |
4456 | |
4457 | |
4458 | |
4459 //------------------------------parse_err-------------------------------------- | |
4460 // Issue a parser error message, and skip to the end of the current line | |
4461 void ADLParser::parse_err(int flag, const char *fmt, ...) { | |
4462 va_list args; | |
4463 | |
4464 va_start(args, fmt); | |
4465 if (flag == 1) | |
415
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
4466 _AD._syntax_errs += _AD.emit_msg(0, flag, linenum(), fmt, args); |
0 | 4467 else if (flag == 2) |
415
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
4468 _AD._semantic_errs += _AD.emit_msg(0, flag, linenum(), fmt, args); |
0 | 4469 else |
415
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
4470 _AD._warnings += _AD.emit_msg(0, flag, linenum(), fmt, args); |
0 | 4471 |
4472 int error_char = _curchar; | |
4473 char* error_ptr = _ptr+1; | |
4474 for(;*_ptr != '\n'; _ptr++) ; // Skip to the end of the current line | |
4475 _curchar = '\n'; | |
4476 va_end(args); | |
4477 _AD._no_output = 1; | |
4478 | |
4479 if (flag == 1) { | |
4480 char* error_tail = strchr(error_ptr, '\n'); | |
4481 char tem = *error_ptr; | |
4482 error_ptr[-1] = '\0'; | |
4483 char* error_head = error_ptr-1; | |
4484 while (error_head > _curline && *error_head) --error_head; | |
4485 if (error_tail) *error_tail = '\0'; | |
4486 fprintf(stderr, "Error Context: %s>>>%c<<<%s\n", | |
4487 error_head, error_char, error_ptr); | |
4488 if (error_tail) *error_tail = '\n'; | |
4489 error_ptr[-1] = tem; | |
4490 } | |
4491 } | |
4492 | |
4493 //---------------------------ensure_start_of_line------------------------------ | |
4494 // A preprocessor directive has been encountered. Be sure it has fallen at | |
4495 // the begining of a line, or else report an error. | |
4496 void ADLParser::ensure_start_of_line(void) { | |
4497 assert( _ptr >= _curline && _ptr < _curline+strlen(_curline), | |
4498 "Must be able to find which line we are in" ); | |
4499 | |
4500 for (char *s = _curline; s < _ptr; s++) { | |
4501 if (*s > ' ') { | |
4502 parse_err(SYNERR, "'%c' must be at beginning of line\n", _curchar); | |
4503 break; | |
4504 } | |
4505 } | |
4506 } | |
4507 | |
4508 //---------------------------ensure_end_of_line-------------------------------- | |
4509 // A preprocessor directive has been parsed. Be sure there is no trailing | |
4510 // garbage at the end of this line. Set the scan point to the beginning of | |
4511 // the next line. | |
4512 void ADLParser::ensure_end_of_line(void) { | |
4513 skipws_no_preproc(); | |
4514 if (_curchar != '\n' && _curchar != '\0') { | |
4515 parse_err(SYNERR, "garbage char '%c' at end of line\n", _curchar); | |
4516 } else { | |
4517 next_char_or_line(); | |
4518 } | |
4519 } | |
4520 | |
4521 //---------------------------handle_preproc------------------------------------ | |
4522 // The '#' character introducing a preprocessor directive has been found. | |
4523 // Parse the whole directive name (e.g., #define, #endif) and take appropriate | |
4524 // action. If we are in an "untaken" span of text, simply keep track of | |
4525 // #ifdef nesting structure, so we can find out when to start taking text | |
4526 // again. (In this state, we "sort of support" C's #if directives, enough | |
4527 // to disregard their associated #else and #endif lines.) If we are in a | |
4528 // "taken" span of text, there are two cases: "#define" and "#undef" | |
4529 // directives are preserved and passed up to the caller, which eventually | |
4530 // passes control to the top-level parser loop, which handles #define and | |
4531 // #undef directly. (This prevents these directives from occurring in | |
4532 // arbitrary positions in the AD file--we require better structure than C.) | |
4533 // In the other case, and #ifdef, #ifndef, #else, or #endif is silently | |
4534 // processed as whitespace, with the "taken" state of the text correctly | |
4535 // updated. This routine returns "false" exactly in the case of a "taken" | |
4536 // #define or #undef, which tells the caller that a preprocessor token | |
4537 // has appeared which must be handled explicitly by the parse loop. | |
4538 bool ADLParser::handle_preproc_token() { | |
4539 assert(*_ptr == '#', "must be at start of preproc"); | |
4540 ensure_start_of_line(); | |
4541 next_char(); | |
4542 skipws_no_preproc(); | |
4543 char* start_ident = _ptr; | |
4544 char* ident = (_curchar == '\n') ? NULL : get_ident_no_preproc(); | |
4545 if (ident == NULL) { | |
4546 parse_err(SYNERR, "expected preprocessor command, got end of line\n"); | |
4547 } else if (!strcmp(ident, "ifdef") || | |
4548 !strcmp(ident, "ifndef")) { | |
4549 char* flag = get_ident_no_preproc(); | |
4550 ensure_end_of_line(); | |
4551 // Test the identifier only if we are already in taken code: | |
4552 bool flag_def = preproc_taken() && (_AD.get_preproc_def(flag) != NULL); | |
4553 bool now_taken = !strcmp(ident, "ifdef") ? flag_def : !flag_def; | |
4554 begin_if_def(now_taken); | |
4555 } else if (!strcmp(ident, "if")) { | |
4556 if (preproc_taken()) | |
4557 parse_err(SYNERR, "unimplemented: #%s %s", ident, _ptr+1); | |
4558 next_line(); | |
4559 // Intelligently skip this nested C preprocessor directive: | |
4560 begin_if_def(true); | |
4561 } else if (!strcmp(ident, "else")) { | |
4562 ensure_end_of_line(); | |
4563 invert_if_def(); | |
4564 } else if (!strcmp(ident, "endif")) { | |
4565 ensure_end_of_line(); | |
4566 end_if_def(); | |
4567 } else if (preproc_taken()) { | |
4568 // pass this token up to the main parser as "#define" or "#undef" | |
4569 _ptr = start_ident; | |
4570 _curchar = *--_ptr; | |
4571 if( _curchar != '#' ) { | |
4572 parse_err(SYNERR, "no space allowed after # in #define or #undef"); | |
4573 assert(_curchar == '#', "no space allowed after # in #define or #undef"); | |
4574 } | |
4575 return false; | |
4576 } | |
4577 return true; | |
4578 } | |
4579 | |
4580 //---------------------------skipws_common------------------------------------- | |
4581 // Skip whitespace, including comments and newlines, while keeping an accurate | |
4582 // line count. | |
4583 // Maybe handle certain preprocessor constructs: #ifdef, #ifndef, #else, #endif | |
4584 void ADLParser::skipws_common(bool do_preproc) { | |
4585 char *start = _ptr; | |
4586 char *next = _ptr + 1; | |
4587 | |
4588 if (*_ptr == '\0') { | |
4589 // Check for string terminator | |
4590 if (_curchar > ' ') return; | |
4591 if (_curchar == '\n') { | |
4592 if (!do_preproc) return; // let caller handle the newline | |
4593 next_line(); | |
4594 _ptr = _curline; next = _ptr + 1; | |
4595 } | |
4596 else if (_curchar == '#' || | |
4597 (_curchar == '/' && (*next == '/' || *next == '*'))) { | |
4598 parse_err(SYNERR, "unimplemented: comment token in a funny place"); | |
4599 } | |
4600 } | |
4601 while(_curline != NULL) { // Check for end of file | |
4602 if (*_ptr == '\n') { // keep proper track of new lines | |
4603 if (!do_preproc) break; // let caller handle the newline | |
4604 next_line(); | |
4605 _ptr = _curline; next = _ptr + 1; | |
4606 } | |
4607 else if ((*_ptr == '/') && (*next == '/')) // C++ comment | |
4608 do { _ptr++; next++; } while(*_ptr != '\n'); // So go to end of line | |
4609 else if ((*_ptr == '/') && (*next == '*')) { // C comment | |
4610 _ptr++; next++; | |
4611 do { | |
4612 _ptr++; next++; | |
4613 if (*_ptr == '\n') { // keep proper track of new lines | |
4614 next_line(); // skip newlines within comments | |
4615 if (_curline == NULL) { // check for end of file | |
4616 parse_err(SYNERR, "end-of-file detected inside comment\n"); | |
4617 break; | |
4618 } | |
4619 _ptr = _curline; next = _ptr + 1; | |
4620 } | |
4621 } while(!((*_ptr == '*') && (*next == '/'))); // Go to end of comment | |
4622 _ptr = ++next; next++; // increment _ptr past comment end | |
4623 } | |
4624 else if (do_preproc && *_ptr == '#') { | |
4625 // Note that this calls skipws_common(false) recursively! | |
4626 bool preproc_handled = handle_preproc_token(); | |
4627 if (!preproc_handled) { | |
4628 if (preproc_taken()) { | |
4629 return; // short circuit | |
4630 } | |
4631 ++_ptr; // skip the preprocessor character | |
4632 } | |
4633 next = _ptr+1; | |
4634 } else if(*_ptr > ' ' && !(do_preproc && !preproc_taken())) { | |
4635 break; | |
4636 } | |
4637 else if (*_ptr == '"' || *_ptr == '\'') { | |
4638 assert(do_preproc, "only skip strings if doing preproc"); | |
4639 // skip untaken quoted string | |
4640 int qchar = *_ptr; | |
4641 while (true) { | |
4642 ++_ptr; | |
4643 if (*_ptr == qchar) { ++_ptr; break; } | |
4644 if (*_ptr == '\\') ++_ptr; | |
4645 if (*_ptr == '\n' || *_ptr == '\0') { | |
4646 parse_err(SYNERR, "newline in string"); | |
4647 break; | |
4648 } | |
4649 } | |
4650 next = _ptr + 1; | |
4651 } | |
4652 else { ++_ptr; ++next; } | |
4653 } | |
4654 if( _curline != NULL ) // at end of file _curchar isn't valid | |
4655 _curchar = *_ptr; // reset _curchar to maintain invariant | |
4656 } | |
4657 | |
4658 //---------------------------cur_char----------------------------------------- | |
4659 char ADLParser::cur_char() { | |
4660 return (_curchar); | |
4661 } | |
4662 | |
4663 //---------------------------next_char----------------------------------------- | |
4664 void ADLParser::next_char() { | |
4665 _curchar = *++_ptr; | |
4666 // if ( _curchar == '\n' ) { | |
4667 // next_line(); | |
4668 // } | |
4669 } | |
4670 | |
4671 //---------------------------next_char_or_line--------------------------------- | |
4672 void ADLParser::next_char_or_line() { | |
4673 if ( _curchar != '\n' ) { | |
4674 _curchar = *++_ptr; | |
4675 } else { | |
4676 next_line(); | |
4677 _ptr = _curline; | |
4678 _curchar = *_ptr; // maintain invariant | |
4679 } | |
4680 } | |
4681 | |
4682 //---------------------------next_line----------------------------------------- | |
4683 void ADLParser::next_line() { | |
415
4d9884b01ba6
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4684 _curline = _buf.get_line(); |
0 | 4685 } |
4686 | |
4687 //-------------------------is_literal_constant--------------------------------- | |
4688 bool ADLParser::is_literal_constant(const char *param) { | |
4689 if (param[0] == 0) return false; // null string | |
4690 if (param[0] == '(') return true; // parenthesized expression | |
4691 if (param[0] == '0' && (param[1] == 'x' || param[1] == 'X')) { | |
4692 // Make sure it's a hex constant. | |
4693 int i = 2; | |
4694 do { | |
4695 if( !ADLParser::is_hex_digit(*(param+i)) ) return false; | |
4696 ++i; | |
4697 } while( *(param+i) != 0 ); | |
4698 return true; | |
4699 } | |
4700 return false; | |
4701 } | |
4702 | |
4703 //---------------------------is_hex_digit-------------------------------------- | |
4704 bool ADLParser::is_hex_digit(char digit) { | |
4705 return ((digit >= '0') && (digit <= '9')) | |
4706 ||((digit >= 'a') && (digit <= 'f')) | |
4707 ||((digit >= 'A') && (digit <= 'F')); | |
4708 } | |
4709 | |
4710 //---------------------------is_int_token-------------------------------------- | |
4711 bool ADLParser::is_int_token(const char* token, int& intval) { | |
4712 const char* cp = token; | |
4713 while (*cp != '\0' && *cp <= ' ') cp++; | |
4714 if (*cp == '-') cp++; | |
4715 int ndigit = 0; | |
4716 while (*cp >= '0' && *cp <= '9') { cp++; ndigit++; } | |
4717 while (*cp != '\0' && *cp <= ' ') cp++; | |
4718 if (ndigit == 0 || *cp != '\0') { | |
4719 return false; | |
4720 } | |
4721 intval = atoi(token); | |
4722 return true; | |
4723 } | |
4724 | |
4725 //-------------------------------trim------------------------------------------ | |
4726 void ADLParser::trim(char* &token) { | |
4727 while (*token <= ' ') token++; | |
4728 char* end = token + strlen(token); | |
4729 while (end > token && *(end-1) <= ' ') --end; | |
4730 *end = '\0'; | |
4731 } |