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annotate src/share/vm/adlc/adlparse.cpp @ 3650:0e8a2a629afb
Pass-by compilation broker.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Wed, 16 Nov 2011 21:27:28 +0100 |
parents | 2f644f85485d |
children | fe240d87c6ec |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
1552
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 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 } | |
2008 | 98 if (!strcmp(ident, "instruct")) instr_parse(); |
0 | 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(); | |
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111 else if (!strcmp(ident, "#line")) preproc_line(); |
0 | 112 else if (!strcmp(ident, "#define")) preproc_define(); |
113 else if (!strcmp(ident, "#undef")) preproc_undef(); | |
114 else { | |
115 parse_err(SYNERR, "expected one of - instruct, operand, ins_attrib, op_attrib, source, register, pipeline, encode\n Found %s",ident); | |
116 } | |
117 } | |
118 | |
119 // Done with parsing, check consistency. | |
120 | |
121 if (_preproc_depth != 0) { | |
122 parse_err(SYNERR, "End of file inside #ifdef"); | |
123 } | |
124 | |
125 // AttributeForms ins_cost and op_cost must be defined for default behaviour | |
126 if (_globalNames[AttributeForm::_ins_cost] == NULL) { | |
127 parse_err(SEMERR, "Did not declare 'ins_cost' attribute"); | |
128 } | |
129 if (_globalNames[AttributeForm::_ins_pc_relative] == NULL) { | |
130 parse_err(SEMERR, "Did not declare 'ins_pc_relative' attribute"); | |
131 } | |
132 if (_globalNames[AttributeForm::_op_cost] == NULL) { | |
133 parse_err(SEMERR, "Did not declare 'op_cost' attribute"); | |
134 } | |
135 } | |
136 | |
137 // ******************** Private Level 1 Parse Functions ******************** | |
138 //------------------------------instr_parse------------------------------------ | |
139 // Parse the contents of an instruction definition, build the InstructForm to | |
140 // represent that instruction, and add it to the InstructForm list. | |
141 void ADLParser::instr_parse(void) { | |
142 char *ident; | |
143 InstructForm *instr; | |
144 MatchRule *rule; | |
145 int match_rules_cnt = 0; | |
146 | |
147 // First get the name of the instruction | |
148 if( (ident = get_unique_ident(_globalNames,"instruction")) == NULL ) | |
149 return; | |
150 instr = new InstructForm(ident); // Create new instruction form | |
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151 instr->_linenum = linenum(); |
0 | 152 _globalNames.Insert(ident, instr); // Add name to the name table |
153 // Debugging Stuff | |
154 if (_AD._adl_debug > 1) | |
155 fprintf(stderr,"Parsing Instruction Form %s\n", ident); | |
156 | |
157 // Then get the operands | |
158 skipws(); | |
159 if (_curchar != '(') { | |
160 parse_err(SYNERR, "missing '(' in instruct definition\n"); | |
161 } | |
162 // Parse the operand list | |
163 else get_oplist(instr->_parameters, instr->_localNames); | |
164 skipws(); // Skip leading whitespace | |
165 // Check for block delimiter | |
166 if ( (_curchar != '%') | |
167 || ( next_char(), (_curchar != '{')) ) { | |
168 parse_err(SYNERR, "missing '%{' in instruction definition\n"); | |
169 return; | |
170 } | |
171 next_char(); // Maintain the invariant | |
172 do { | |
173 ident = get_ident(); // Grab next identifier | |
174 if (ident == NULL) { | |
175 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar); | |
176 continue; | |
177 } | |
178 if (!strcmp(ident, "predicate")) instr->_predicate = pred_parse(); | |
179 else if (!strcmp(ident, "match")) { | |
180 // Allow one instruction have several match rules. | |
181 rule = instr->_matrule; | |
182 if (rule == NULL) { | |
183 // This is first match rule encountered | |
184 rule = match_parse(instr->_localNames); | |
185 if (rule) { | |
186 instr->_matrule = rule; | |
187 // Special case the treatment of Control instructions. | |
188 if( instr->is_ideal_control() ) { | |
189 // Control instructions return a special result, 'Universe' | |
190 rule->_result = "Universe"; | |
191 } | |
192 // Check for commutative operations with tree operands. | |
193 matchrule_clone_and_swap(rule, instr->_ident, match_rules_cnt); | |
194 } | |
195 } else { | |
196 // Find the end of the match rule list | |
197 while (rule->_next != NULL) | |
198 rule = rule->_next; | |
199 // Add the new match rule to the list | |
200 rule->_next = match_parse(instr->_localNames); | |
201 if (rule->_next) { | |
202 rule = rule->_next; | |
203 if( instr->is_ideal_control() ) { | |
204 parse_err(SYNERR, "unique match rule expected for %s\n", rule->_name); | |
205 return; | |
206 } | |
207 assert(match_rules_cnt < 100," too many match rule clones"); | |
208 char* buf = (char*) malloc(strlen(instr->_ident) + 4); | |
209 sprintf(buf, "%s_%d", instr->_ident, match_rules_cnt++); | |
210 rule->_result = buf; | |
211 // Check for commutative operations with tree operands. | |
212 matchrule_clone_and_swap(rule, instr->_ident, match_rules_cnt); | |
213 } | |
214 } | |
215 } | |
216 else if (!strcmp(ident, "encode")) { | |
217 parse_err(SYNERR, "Instructions specify ins_encode, not encode\n"); | |
218 } | |
2008 | 219 else if (!strcmp(ident, "ins_encode")) 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(); | |
0 | 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 } | |
2008 | 231 else if (!strcmp(ident, "format")) instr->_format = format_parse(); |
0 | 232 else if (!strcmp(ident, "interface")) { |
233 parse_err(SYNERR, "Instructions do not specify an interface\n"); | |
234 } | |
2008 | 235 else if (!strcmp(ident, "ins_pipe")) ins_pipe_parse(*instr); |
0 | 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. | |
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300 rule->matchrule_swap_commutative_op(instr_ident, count, match_rules_cnt); |
0 | 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) ) { | |
2008 | 325 if (instr->_predicate != NULL) |
326 parse_err(SYNERR, "ADLC does not support instruction chain rules with predicates"); | |
0 | 327 // Chain from input _ideal_operand_type_, |
328 // Needed for shared roots of match-trees | |
329 ChainList *lst = (ChainList *)_AD._chainRules[optype]; | |
330 if (lst == NULL) { | |
331 lst = new ChainList(); | |
332 _AD._chainRules.Insert(optype, lst); | |
333 } | |
334 if (!lst->search(instr->_matrule->_lChild->_opType)) { | |
335 const char *cost = instr->cost(); | |
336 if (cost == NULL) { | |
337 cost = ((AttributeForm*)_globalNames[AttributeForm::_ins_cost])->_attrdef; | |
338 } | |
339 // The ADLC does not support chaining from the ideal operand type | |
340 // of a predicated user-defined operand | |
341 if( frm->is_operand() == NULL || frm->is_operand()->_predicate == NULL ) { | |
342 lst->insert(instr->_matrule->_lChild->_opType,cost,instr->_ident); | |
343 } | |
344 } | |
345 // Chain from input _user_defined_operand_type_, | |
346 lst = (ChainList *)_AD._chainRules[result]; | |
347 if (lst == NULL) { | |
348 lst = new ChainList(); | |
349 _AD._chainRules.Insert(result, lst); | |
350 } | |
351 if (!lst->search(instr->_matrule->_lChild->_opType)) { | |
352 const char *cost = instr->cost(); | |
353 if (cost == NULL) { | |
354 cost = ((AttributeForm*)_globalNames[AttributeForm::_ins_cost])->_attrdef; | |
355 } | |
356 // It is safe to chain from the top-level user-defined operand even | |
357 // if it has a predicate, since the predicate is checked before | |
358 // the user-defined type is available. | |
359 lst->insert(instr->_matrule->_lChild->_opType,cost,instr->_ident); | |
360 } | |
361 } else { | |
362 // May have instruction chain rule if root of right-tree is an ideal | |
363 OperandForm *rightOp = _globalNames[right->_opType]->is_operand(); | |
364 if( rightOp ) { | |
365 const Form *rightRoot = _globalNames[rightOp->_matrule->_opType]; | |
366 if( rightRoot && rightRoot->ideal_only() ) { | |
367 const char *chain_op = NULL; | |
368 if( rightRoot->is_instruction() ) | |
369 chain_op = rightOp->_ident; | |
370 if( chain_op ) { | |
371 // Look-up the operation in chain rule table | |
372 ChainList *lst = (ChainList *)_AD._chainRules[chain_op]; | |
373 if (lst == NULL) { | |
374 lst = new ChainList(); | |
375 _AD._chainRules.Insert(chain_op, lst); | |
376 } | |
377 // if (!lst->search(instr->_matrule->_lChild->_opType)) { | |
378 const char *cost = instr->cost(); | |
379 if (cost == NULL) { | |
380 cost = ((AttributeForm*)_globalNames[AttributeForm::_ins_cost])->_attrdef; | |
381 } | |
382 // This chains from a top-level operand whose predicate, if any, | |
383 // has been checked. | |
384 lst->insert(instr->_matrule->_lChild->_opType,cost,instr->_ident); | |
385 // } | |
386 } | |
387 } | |
388 } | |
389 } // end chain rule from right-tree's ideal root | |
390 } | |
391 } | |
392 } | |
393 | |
394 | |
395 //------------------------------oper_parse------------------------------------- | |
396 void ADLParser::oper_parse(void) { | |
397 char *ident; | |
398 OperandForm *oper; | |
399 AttributeForm *attr; | |
400 MatchRule *rule; | |
401 | |
402 // First get the name of the operand | |
403 skipws(); | |
404 if( (ident = get_unique_ident(_globalNames,"operand")) == NULL ) | |
405 return; | |
406 oper = new OperandForm(ident); // Create new operand form | |
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407 oper->_linenum = linenum(); |
0 | 408 _globalNames.Insert(ident, oper); // Add name to the name table |
409 | |
410 // Debugging Stuff | |
411 if (_AD._adl_debug > 1) fprintf(stderr,"Parsing Operand Form %s\n", ident); | |
412 | |
413 // Get the component operands | |
414 skipws(); | |
415 if (_curchar != '(') { | |
416 parse_err(SYNERR, "missing '(' in operand definition\n"); | |
417 return; | |
418 } | |
419 else get_oplist(oper->_parameters, oper->_localNames); // Parse the component operand list | |
420 skipws(); | |
421 // Check for block delimiter | |
422 if ((_curchar != '%') || (*(_ptr+1) != '{')) { // If not open block | |
423 parse_err(SYNERR, "missing '%c{' in operand definition\n","%"); | |
424 return; | |
425 } | |
426 next_char(); next_char(); // Skip over "%{" symbol | |
427 do { | |
428 ident = get_ident(); // Grab next identifier | |
429 if (ident == NULL) { | |
430 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar); | |
431 continue; | |
432 } | |
433 if (!strcmp(ident, "predicate")) oper->_predicate = pred_parse(); | |
434 else if (!strcmp(ident, "match")) { | |
435 // Find the end of the match rule list | |
436 rule = oper->_matrule; | |
437 if (rule) { | |
438 while (rule->_next) rule = rule->_next; | |
439 // Add the new match rule to the list | |
440 rule->_next = match_parse(oper->_localNames); | |
441 if (rule->_next) { | |
442 rule->_next->_result = oper->_ident; | |
443 } | |
444 } | |
445 else { | |
446 // This is first match rule encountered | |
447 oper->_matrule = match_parse(oper->_localNames); | |
448 if (oper->_matrule) { | |
449 oper->_matrule->_result = oper->_ident; | |
450 } | |
451 } | |
452 } | |
453 else if (!strcmp(ident, "encode")) oper->_interface = interface_parse(); | |
454 else if (!strcmp(ident, "ins_encode")) { | |
455 parse_err(SYNERR, "Operands specify 'encode', not 'ins_encode'\n"); | |
456 } | |
457 else if (!strcmp(ident, "opcode")) { | |
458 parse_err(SYNERR, "Operands do not specify an opcode\n"); | |
459 } | |
460 else if (!strcmp(ident, "effect")) { | |
461 parse_err(SYNERR, "Operands do not specify an effect\n"); | |
462 } | |
463 else if (!strcmp(ident, "expand")) { | |
464 parse_err(SYNERR, "Operands do not specify an expand\n"); | |
465 } | |
466 else if (!strcmp(ident, "rewrite")) { | |
467 parse_err(SYNERR, "Operands do not specify a rewrite\n"); | |
468 } | |
469 else if (!strcmp(ident, "constraint"))oper->_constraint= constraint_parse(); | |
470 else if (!strcmp(ident, "construct")) oper->_construct = construct_parse(); | |
471 else if (!strcmp(ident, "format")) oper->_format = format_parse(); | |
472 else if (!strcmp(ident, "interface")) oper->_interface = interface_parse(); | |
473 // Check identifier to see if it is the name of an attribute | |
474 else if (((attr = _globalNames[ident]->is_attribute()) != NULL) && | |
475 (attr->_atype == OP_ATTR)) oper->_attribs = attr_parse(ident); | |
476 else { | |
477 parse_err(SYNERR, "expected one of - constraint, predicate, match, encode, format, construct, or the name of a defined operand attribute at %s\n", ident); | |
478 } | |
479 skipws(); | |
480 } while(_curchar != '%'); | |
481 next_char(); | |
482 if (_curchar != '}') { | |
483 parse_err(SYNERR, "missing '%}' in operand definition\n"); | |
484 return; | |
485 } | |
486 // Add operand to tail of operand list | |
487 _AD.addForm(oper); | |
488 } | |
489 | |
490 //------------------------------opclass_parse---------------------------------- | |
491 // Operand Classes are a block with a comma delimited list of operand names | |
492 void ADLParser::opclass_parse(void) { | |
493 char *ident; | |
494 OpClassForm *opc; | |
495 OperandForm *opForm; | |
496 | |
497 // First get the name of the operand class | |
498 skipws(); | |
499 if( (ident = get_unique_ident(_globalNames,"opclass")) == NULL ) | |
500 return; | |
501 opc = new OpClassForm(ident); // Create new operand class form | |
502 _globalNames.Insert(ident, opc); // Add name to the name table | |
503 | |
504 // Debugging Stuff | |
505 if (_AD._adl_debug > 1) | |
506 fprintf(stderr,"Parsing Operand Class Form %s\n", ident); | |
507 | |
508 // Get the list of operands | |
509 skipws(); | |
510 if (_curchar != '(') { | |
511 parse_err(SYNERR, "missing '(' in operand definition\n"); | |
512 return; | |
513 } | |
514 do { | |
515 next_char(); // Skip past open paren or comma | |
516 ident = get_ident(); // Grab next identifier | |
517 if (ident == NULL) { | |
518 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar); | |
519 continue; | |
520 } | |
521 // Check identifier to see if it is the name of an operand | |
522 const Form *form = _globalNames[ident]; | |
523 opForm = form ? form->is_operand() : NULL; | |
524 if ( opForm ) { | |
525 opc->_oplst.addName(ident); // Add operand to opclass list | |
526 opForm->_classes.addName(opc->_ident);// Add opclass to operand list | |
527 } | |
528 else { | |
529 parse_err(SYNERR, "expected name of a defined operand at %s\n", ident); | |
530 } | |
531 skipws(); // skip trailing whitespace | |
532 } while (_curchar == ','); // Check for the comma | |
533 // Check for closing ')' | |
534 if (_curchar != ')') { | |
535 parse_err(SYNERR, "missing ')' or ',' in opclass definition\n"); | |
536 return; | |
537 } | |
538 next_char(); // Consume the ')' | |
539 skipws(); | |
540 // Check for closing ';' | |
541 if (_curchar != ';') { | |
542 parse_err(SYNERR, "missing ';' in opclass definition\n"); | |
543 return; | |
544 } | |
545 next_char(); // Consume the ';' | |
546 // Add operand to tail of operand list | |
547 _AD.addForm(opc); | |
548 } | |
549 | |
550 //------------------------------ins_attr_parse--------------------------------- | |
551 void ADLParser::ins_attr_parse(void) { | |
552 char *ident; | |
553 char *aexpr; | |
554 AttributeForm *attrib; | |
555 | |
556 // get name for the instruction attribute | |
557 skipws(); // Skip leading whitespace | |
558 if( (ident = get_unique_ident(_globalNames,"inst_attrib")) == NULL ) | |
559 return; | |
560 // Debugging Stuff | |
561 if (_AD._adl_debug > 1) fprintf(stderr,"Parsing Ins_Attribute Form %s\n", ident); | |
562 | |
563 // Get default value of the instruction attribute | |
564 skipws(); // Skip whitespace | |
565 if ((aexpr = get_paren_expr("attribute default expression string")) == NULL) { | |
566 parse_err(SYNERR, "missing '(' in ins_attrib definition\n"); | |
567 return; | |
568 } | |
569 // Debug Stuff | |
570 if (_AD._adl_debug > 1) fprintf(stderr,"Attribute Expression: %s\n", aexpr); | |
571 | |
572 // Check for terminator | |
573 if (_curchar != ';') { | |
574 parse_err(SYNERR, "missing ';' in ins_attrib definition\n"); | |
575 return; | |
576 } | |
577 next_char(); // Advance past the ';' | |
578 | |
579 // Construct the attribute, record global name, and store in ArchDesc | |
580 attrib = new AttributeForm(ident, INS_ATTR, aexpr); | |
581 _globalNames.Insert(ident, attrib); // Add name to the name table | |
582 _AD.addForm(attrib); | |
583 } | |
584 | |
585 //------------------------------op_attr_parse---------------------------------- | |
586 void ADLParser::op_attr_parse(void) { | |
587 char *ident; | |
588 char *aexpr; | |
589 AttributeForm *attrib; | |
590 | |
591 // get name for the operand attribute | |
592 skipws(); // Skip leading whitespace | |
593 if( (ident = get_unique_ident(_globalNames,"op_attrib")) == NULL ) | |
594 return; | |
595 // Debugging Stuff | |
596 if (_AD._adl_debug > 1) fprintf(stderr,"Parsing Op_Attribute Form %s\n", ident); | |
597 | |
598 // Get default value of the instruction attribute | |
599 skipws(); // Skip whitespace | |
600 if ((aexpr = get_paren_expr("attribute default expression string")) == NULL) { | |
601 parse_err(SYNERR, "missing '(' in op_attrib definition\n"); | |
602 return; | |
603 } | |
604 // Debug Stuff | |
605 if (_AD._adl_debug > 1) fprintf(stderr,"Attribute Expression: %s\n", aexpr); | |
606 | |
607 // Check for terminator | |
608 if (_curchar != ';') { | |
609 parse_err(SYNERR, "missing ';' in op_attrib definition\n"); | |
610 return; | |
611 } | |
612 next_char(); // Advance past the ';' | |
613 | |
614 // Construct the attribute, record global name, and store in ArchDesc | |
615 attrib = new AttributeForm(ident, OP_ATTR, aexpr); | |
616 _globalNames.Insert(ident, attrib); | |
617 _AD.addForm(attrib); | |
618 } | |
619 | |
620 //------------------------------definitions_parse----------------------------------- | |
621 void ADLParser::definitions_parse(void) { | |
622 skipws(); // Skip leading whitespace | |
623 if (_curchar == '%' && *(_ptr+1) == '{') { | |
624 next_char(); next_char(); // Skip "%{" | |
625 skipws(); | |
626 while (_curchar != '%' && *(_ptr+1) != '}') { | |
627 // Process each definition until finding closing string "%}" | |
628 char *token = get_ident(); | |
629 if (token == NULL) { | |
630 parse_err(SYNERR, "missing identifier inside definitions block.\n"); | |
631 return; | |
632 } | |
633 if (strcmp(token,"int_def")==0) { int_def_parse(); } | |
634 // if (strcmp(token,"str_def")==0) { str_def_parse(); } | |
635 skipws(); | |
636 } | |
637 } | |
638 else { | |
639 parse_err(SYNERR, "Missing %%{ ... %%} block after definitions keyword.\n"); | |
640 return; | |
641 } | |
642 } | |
643 | |
644 //------------------------------int_def_parse---------------------------------- | |
645 // Parse Example: | |
646 // int_def MEMORY_REF_COST ( 200, DEFAULT_COST * 2); | |
647 // <keyword> <name> ( <int_value>, <description> ); | |
648 // | |
649 void ADLParser::int_def_parse(void) { | |
650 char *name = NULL; // Name of definition | |
651 char *value = NULL; // its value, | |
652 int int_value = -1; // positive values only | |
653 char *description = NULL; // textual description | |
654 | |
655 // Get definition name | |
656 skipws(); // Skip whitespace | |
657 name = get_ident(); | |
658 if (name == NULL) { | |
659 parse_err(SYNERR, "missing definition name after int_def\n"); | |
660 return; | |
661 } | |
662 | |
663 // Check for value of int_def dname( integer_value [, string_expression ] ) | |
664 skipws(); | |
665 if (_curchar == '(') { | |
666 | |
667 // Parse the integer value. | |
668 next_char(); | |
669 value = get_ident(); | |
670 if (value == NULL) { | |
671 parse_err(SYNERR, "missing value in int_def\n"); | |
672 return; | |
673 } | |
674 if( !is_int_token(value, int_value) ) { | |
675 parse_err(SYNERR, "value in int_def is not recognized as integer\n"); | |
676 return; | |
677 } | |
678 skipws(); | |
679 | |
680 // Check for description | |
681 if (_curchar == ',') { | |
682 next_char(); // skip ',' | |
683 | |
684 description = get_expr("int_def description", ")"); | |
685 if (description == NULL) { | |
686 parse_err(SYNERR, "invalid or missing description in int_def\n"); | |
687 return; | |
688 } | |
689 trim(description); | |
690 } | |
691 | |
692 if (_curchar != ')') { | |
693 parse_err(SYNERR, "missing ')' in register definition statement\n"); | |
694 return; | |
695 } | |
696 next_char(); | |
697 } | |
698 | |
699 // Check for closing ';' | |
700 skipws(); | |
701 if (_curchar != ';') { | |
702 parse_err(SYNERR, "missing ';' after int_def\n"); | |
703 return; | |
704 } | |
705 next_char(); // move past ';' | |
706 | |
707 // Debug Stuff | |
708 if (_AD._adl_debug > 1) { | |
709 fprintf(stderr,"int_def: %s ( %s, %s )\n", name, | |
710 (value), (description ? description : "")); | |
711 } | |
712 | |
713 // Record new definition. | |
714 Expr *expr = new Expr(name, description, int_value, int_value); | |
715 const Expr *old_expr = _AD.globalDefs().define(name, expr); | |
716 if (old_expr != NULL) { | |
717 parse_err(SYNERR, "Duplicate definition\n"); | |
718 return; | |
719 } | |
720 | |
721 return; | |
722 } | |
723 | |
724 | |
725 //------------------------------source_parse----------------------------------- | |
726 void ADLParser::source_parse(void) { | |
727 SourceForm *source; // Encode class for instruction/operand | |
728 char *rule = NULL; // String representation of encode rule | |
729 | |
730 skipws(); // Skip leading whitespace | |
731 if ( (rule = find_cpp_block("source block")) == NULL ) { | |
732 parse_err(SYNERR, "incorrect or missing block for 'source'.\n"); | |
733 return; | |
734 } | |
735 // Debug Stuff | |
736 if (_AD._adl_debug > 1) fprintf(stderr,"Source Form: %s\n", rule); | |
737 | |
738 source = new SourceForm(rule); // Build new Source object | |
739 _AD.addForm(source); | |
740 // skipws(); | |
741 } | |
742 | |
743 //------------------------------source_hpp_parse------------------------------- | |
744 // Parse a source_hpp %{ ... %} block. | |
745 // The code gets stuck into the ad_<arch>.hpp file. | |
746 // If the source_hpp block appears before the register block in the AD | |
747 // file, it goes up at the very top of the ad_<arch>.hpp file, so that | |
748 // it can be used by register encodings, etc. Otherwise, it goes towards | |
749 // the bottom, where it's useful as a global definition to *.cpp files. | |
750 void ADLParser::source_hpp_parse(void) { | |
751 char *rule = NULL; // String representation of encode rule | |
752 | |
753 skipws(); // Skip leading whitespace | |
754 if ( (rule = find_cpp_block("source_hpp block")) == NULL ) { | |
755 parse_err(SYNERR, "incorrect or missing block for 'source_hpp'.\n"); | |
756 return; | |
757 } | |
758 // Debug Stuff | |
759 if (_AD._adl_debug > 1) fprintf(stderr,"Header Form: %s\n", rule); | |
760 | |
761 if (_AD.get_registers() == NULL) { | |
762 // Very early in the file, before reg_defs, we collect pre-headers. | |
763 PreHeaderForm* pre_header = new PreHeaderForm(rule); | |
764 _AD.addForm(pre_header); | |
765 } else { | |
766 // Normally, we collect header info, placed at the bottom of the hpp file. | |
767 HeaderForm* header = new HeaderForm(rule); | |
768 _AD.addForm(header); | |
769 } | |
770 } | |
771 | |
772 //------------------------------reg_parse-------------------------------------- | |
773 void ADLParser::reg_parse(void) { | |
774 | |
775 // Create the RegisterForm for the architecture description. | |
776 RegisterForm *regBlock = new RegisterForm(); // Build new Source object | |
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777 regBlock->_linenum = linenum(); |
0 | 778 _AD.addForm(regBlock); |
779 | |
780 skipws(); // Skip leading whitespace | |
781 if (_curchar == '%' && *(_ptr+1) == '{') { | |
782 next_char(); next_char(); // Skip "%{" | |
783 skipws(); | |
784 while (_curchar != '%' && *(_ptr+1) != '}') { | |
785 char *token = get_ident(); | |
786 if (token == NULL) { | |
787 parse_err(SYNERR, "missing identifier inside register block.\n"); | |
788 return; | |
789 } | |
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790 if (strcmp(token,"reg_def")==0) { reg_def_parse(); } |
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791 else if (strcmp(token,"reg_class")==0) { reg_class_parse(); } |
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792 else if (strcmp(token,"alloc_class")==0) { alloc_class_parse(); } |
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793 else if (strcmp(token,"#define")==0) { preproc_define(); } |
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794 else { parse_err(SYNERR, "bad token %s inside register block.\n", token); break; } |
0 | 795 skipws(); |
796 } | |
797 } | |
798 else { | |
799 parse_err(SYNERR, "Missing %c{ ... %c} block after register keyword.\n",'%','%'); | |
800 return; | |
801 } | |
802 | |
803 // Add reg_class spill_regs | |
804 regBlock->addSpillRegClass(); | |
805 } | |
806 | |
807 //------------------------------encode_parse----------------------------------- | |
808 void ADLParser::encode_parse(void) { | |
809 EncodeForm *encBlock; // Information about instruction/operand encoding | |
810 char *desc = NULL; // String representation of encode rule | |
811 | |
812 _AD.getForm(&encBlock); | |
813 if ( encBlock == NULL) { | |
814 // Create the EncodeForm for the architecture description. | |
815 encBlock = new EncodeForm(); // Build new Source object | |
816 _AD.addForm(encBlock); | |
817 } | |
818 | |
819 skipws(); // Skip leading whitespace | |
820 if (_curchar == '%' && *(_ptr+1) == '{') { | |
821 next_char(); next_char(); // Skip "%{" | |
822 skipws(); | |
823 while (_curchar != '%' && *(_ptr+1) != '}') { | |
824 char *token = get_ident(); | |
825 if (token == NULL) { | |
826 parse_err(SYNERR, "missing identifier inside encoding block.\n"); | |
827 return; | |
828 } | |
829 if (strcmp(token,"enc_class")==0) { enc_class_parse(); } | |
830 skipws(); | |
831 } | |
832 } | |
833 else { | |
834 parse_err(SYNERR, "Missing %c{ ... %c} block after encode keyword.\n",'%','%'); | |
835 return; | |
836 } | |
837 } | |
838 | |
839 //------------------------------enc_class_parse-------------------------------- | |
840 void ADLParser::enc_class_parse(void) { | |
841 char *ec_name; // Name of encoding class being defined | |
842 | |
843 // Get encoding class name | |
844 skipws(); // Skip whitespace | |
845 ec_name = get_ident(); | |
846 if (ec_name == NULL) { | |
847 parse_err(SYNERR, "missing encoding class name after encode.\n"); | |
848 return; | |
849 } | |
850 | |
851 EncClass *encoding = _AD._encode->add_EncClass(ec_name); | |
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852 encoding->_linenum = linenum(); |
0 | 853 |
854 skipws(); // Skip leading whitespace | |
855 // Check for optional parameter list | |
856 if (_curchar == '(') { | |
857 do { | |
858 char *pType = NULL; // parameter type | |
859 char *pName = NULL; // parameter name | |
860 | |
861 next_char(); // skip open paren & comma characters | |
862 skipws(); | |
863 if (_curchar == ')') break; | |
864 | |
865 // Get parameter type | |
866 pType = get_ident(); | |
867 if (pType == NULL) { | |
868 parse_err(SYNERR, "parameter type expected at %c\n", _curchar); | |
869 return; | |
870 } | |
871 | |
872 skipws(); | |
873 // Get parameter name | |
874 pName = get_ident(); | |
875 if (pName == NULL) { | |
876 parse_err(SYNERR, "parameter name expected at %c\n", _curchar); | |
877 return; | |
878 } | |
879 | |
880 // Record parameter type and name | |
881 encoding->add_parameter( pType, pName ); | |
882 | |
883 skipws(); | |
884 } while(_curchar == ','); | |
885 | |
886 if (_curchar != ')') parse_err(SYNERR, "missing ')'\n"); | |
887 else { | |
888 next_char(); // Skip ')' | |
889 } | |
890 } // Done with parameter list | |
891 | |
892 skipws(); | |
893 // Check for block starting delimiters | |
894 if ((_curchar != '%') || (*(_ptr+1) != '{')) { // If not open block | |
895 parse_err(SYNERR, "missing '%c{' in enc_class definition\n", '%'); | |
896 return; | |
897 } | |
898 next_char(); // Skip '%' | |
899 next_char(); // Skip '{' | |
900 | |
901 enc_class_parse_block(encoding, ec_name); | |
902 } | |
903 | |
904 | |
905 void ADLParser::enc_class_parse_block(EncClass* encoding, char* ec_name) { | |
906 skipws_no_preproc(); // Skip leading whitespace | |
907 // Prepend location descriptor, for debugging; cf. ADLParser::find_cpp_block | |
908 if (_AD._adlocation_debug) { | |
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909 encoding->add_code(get_line_string()); |
0 | 910 } |
911 | |
912 // Collect the parts of the encode description | |
913 // (1) strings that are passed through to output | |
914 // (2) replacement/substitution variable, preceeded by a '$' | |
915 while ( (_curchar != '%') && (*(_ptr+1) != '}') ) { | |
916 | |
917 // (1) | |
918 // Check if there is a string to pass through to output | |
919 char *start = _ptr; // Record start of the next string | |
920 while ((_curchar != '$') && ((_curchar != '%') || (*(_ptr+1) != '}')) ) { | |
921 // If at the start of a comment, skip past it | |
922 if( (_curchar == '/') && ((*(_ptr+1) == '/') || (*(_ptr+1) == '*')) ) { | |
923 skipws_no_preproc(); | |
924 } else { | |
925 // ELSE advance to the next character, or start of the next line | |
926 next_char_or_line(); | |
927 } | |
928 } | |
929 // If a string was found, terminate it and record in EncClass | |
930 if ( start != _ptr ) { | |
931 *_ptr = '\0'; // Terminate the string | |
932 encoding->add_code(start); | |
933 } | |
934 | |
935 // (2) | |
936 // If we are at a replacement variable, | |
937 // copy it and record in EncClass | |
2008 | 938 if (_curchar == '$') { |
0 | 939 // Found replacement Variable |
2008 | 940 char* rep_var = get_rep_var_ident_dup(); |
0 | 941 // Add flag to _strings list indicating we should check _rep_vars |
942 encoding->add_rep_var(rep_var); | |
943 } | |
944 } // end while part of format description | |
945 next_char(); // Skip '%' | |
946 next_char(); // Skip '}' | |
947 | |
948 skipws(); | |
949 | |
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950 if (_AD._adlocation_debug) { |
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951 encoding->add_code(end_line_marker()); |
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952 } |
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953 |
0 | 954 // Debug Stuff |
955 if (_AD._adl_debug > 1) fprintf(stderr,"EncodingClass Form: %s\n", ec_name); | |
956 } | |
957 | |
958 //------------------------------frame_parse----------------------------------- | |
959 void ADLParser::frame_parse(void) { | |
960 FrameForm *frame; // Information about stack-frame layout | |
961 char *desc = NULL; // String representation of frame | |
962 | |
963 skipws(); // Skip leading whitespace | |
964 | |
965 frame = new FrameForm(); // Build new Frame object | |
966 // Check for open block sequence | |
967 skipws(); // Skip leading whitespace | |
968 if (_curchar == '%' && *(_ptr+1) == '{') { | |
969 next_char(); next_char(); // Skip "%{" | |
970 skipws(); | |
971 while (_curchar != '%' && *(_ptr+1) != '}') { | |
972 char *token = get_ident(); | |
973 if (token == NULL) { | |
974 parse_err(SYNERR, "missing identifier inside frame block.\n"); | |
975 return; | |
976 } | |
977 if (strcmp(token,"stack_direction")==0) { | |
978 stack_dir_parse(frame); | |
979 } | |
980 if (strcmp(token,"sync_stack_slots")==0) { | |
981 sync_stack_slots_parse(frame); | |
982 } | |
983 if (strcmp(token,"frame_pointer")==0) { | |
984 frame_pointer_parse(frame, false); | |
985 } | |
986 if (strcmp(token,"interpreter_frame_pointer")==0) { | |
987 interpreter_frame_pointer_parse(frame, false); | |
988 // Add reg_class interpreter_frame_pointer_reg | |
989 if( _AD._register != NULL ) { | |
990 RegClass *reg_class = _AD._register->addRegClass("interpreter_frame_pointer_reg"); | |
991 char *interpreter_frame_pointer_reg = frame->_interpreter_frame_pointer_reg; | |
992 if( interpreter_frame_pointer_reg != NULL ) { | |
993 RegDef *regDef = _AD._register->getRegDef(interpreter_frame_pointer_reg); | |
994 reg_class->addReg(regDef); // add regDef to regClass | |
995 } | |
996 } | |
997 } | |
998 if (strcmp(token,"inline_cache_reg")==0) { | |
999 inline_cache_parse(frame, false); | |
1000 // Add reg_class inline_cache_reg | |
1001 if( _AD._register != NULL ) { | |
1002 RegClass *reg_class = _AD._register->addRegClass("inline_cache_reg"); | |
1003 char *inline_cache_reg = frame->_inline_cache_reg; | |
1004 if( inline_cache_reg != NULL ) { | |
1005 RegDef *regDef = _AD._register->getRegDef(inline_cache_reg); | |
1006 reg_class->addReg(regDef); // add regDef to regClass | |
1007 } | |
1008 } | |
1009 } | |
1010 if (strcmp(token,"compiler_method_oop_reg")==0) { | |
1011 parse_err(WARN, "Using obsolete Token, compiler_method_oop_reg"); | |
1012 skipws(); | |
1013 } | |
1014 if (strcmp(token,"interpreter_method_oop_reg")==0) { | |
1015 interpreter_method_oop_parse(frame, false); | |
1016 // Add reg_class interpreter_method_oop_reg | |
1017 if( _AD._register != NULL ) { | |
1018 RegClass *reg_class = _AD._register->addRegClass("interpreter_method_oop_reg"); | |
1019 char *method_oop_reg = frame->_interpreter_method_oop_reg; | |
1020 if( method_oop_reg != NULL ) { | |
1021 RegDef *regDef = _AD._register->getRegDef(method_oop_reg); | |
1022 reg_class->addReg(regDef); // add regDef to regClass | |
1023 } | |
1024 } | |
1025 } | |
1026 if (strcmp(token,"cisc_spilling_operand_name")==0) { | |
1027 cisc_spilling_operand_name_parse(frame, false); | |
1028 } | |
1029 if (strcmp(token,"stack_alignment")==0) { | |
1030 stack_alignment_parse(frame); | |
1031 } | |
1032 if (strcmp(token,"return_addr")==0) { | |
1033 return_addr_parse(frame, false); | |
1034 } | |
1035 if (strcmp(token,"in_preserve_stack_slots")==0) { | |
1036 preserve_stack_parse(frame); | |
1037 } | |
1038 if (strcmp(token,"out_preserve_stack_slots")==0) { | |
1039 parse_err(WARN, "Using obsolete token, out_preserve_stack_slots"); | |
1040 skipws(); | |
1041 } | |
1042 if (strcmp(token,"varargs_C_out_slots_killed")==0) { | |
1043 frame->_varargs_C_out_slots_killed = parse_one_arg("varargs C out slots killed"); | |
1044 } | |
1045 if (strcmp(token,"calling_convention")==0) { | |
1046 frame->_calling_convention = calling_convention_parse(); | |
1047 } | |
1048 if (strcmp(token,"return_value")==0) { | |
1049 frame->_return_value = return_value_parse(); | |
1050 } | |
1051 if (strcmp(token,"c_frame_pointer")==0) { | |
1052 frame_pointer_parse(frame, true); | |
1053 } | |
1054 if (strcmp(token,"c_return_addr")==0) { | |
1055 return_addr_parse(frame, true); | |
1056 } | |
1057 if (strcmp(token,"c_calling_convention")==0) { | |
1058 frame->_c_calling_convention = calling_convention_parse(); | |
1059 } | |
1060 if (strcmp(token,"c_return_value")==0) { | |
1061 frame->_c_return_value = return_value_parse(); | |
1062 } | |
1063 | |
1064 skipws(); | |
1065 } | |
1066 } | |
1067 else { | |
1068 parse_err(SYNERR, "Missing %c{ ... %c} block after encode keyword.\n",'%','%'); | |
1069 return; | |
1070 } | |
1071 // All Java versions are required, native versions are optional | |
1072 if(frame->_frame_pointer == NULL) { | |
1073 parse_err(SYNERR, "missing frame pointer definition in frame section.\n"); | |
1074 return; | |
1075 } | |
1076 // !!!!! !!!!! | |
1077 // if(frame->_interpreter_frame_ptr_reg == NULL) { | |
1078 // parse_err(SYNERR, "missing interpreter frame pointer definition in frame section.\n"); | |
1079 // return; | |
1080 // } | |
1081 if(frame->_alignment == NULL) { | |
1082 parse_err(SYNERR, "missing alignment definition in frame section.\n"); | |
1083 return; | |
1084 } | |
1085 if(frame->_return_addr == NULL) { | |
1086 parse_err(SYNERR, "missing return address location in frame section.\n"); | |
1087 return; | |
1088 } | |
1089 if(frame->_in_preserve_slots == NULL) { | |
1090 parse_err(SYNERR, "missing stack slot preservation definition in frame section.\n"); | |
1091 return; | |
1092 } | |
1093 if(frame->_varargs_C_out_slots_killed == NULL) { | |
1094 parse_err(SYNERR, "missing varargs C out slots killed definition in frame section.\n"); | |
1095 return; | |
1096 } | |
1097 if(frame->_calling_convention == NULL) { | |
1098 parse_err(SYNERR, "missing calling convention definition in frame section.\n"); | |
1099 return; | |
1100 } | |
1101 if(frame->_return_value == NULL) { | |
1102 parse_err(SYNERR, "missing return value definition in frame section.\n"); | |
1103 return; | |
1104 } | |
1105 // Fill natives in identically with the Java versions if not present. | |
1106 if(frame->_c_frame_pointer == NULL) { | |
1107 frame->_c_frame_pointer = frame->_frame_pointer; | |
1108 } | |
1109 if(frame->_c_return_addr == NULL) { | |
1110 frame->_c_return_addr = frame->_return_addr; | |
1111 frame->_c_return_addr_loc = frame->_return_addr_loc; | |
1112 } | |
1113 if(frame->_c_calling_convention == NULL) { | |
1114 frame->_c_calling_convention = frame->_calling_convention; | |
1115 } | |
1116 if(frame->_c_return_value == NULL) { | |
1117 frame->_c_return_value = frame->_return_value; | |
1118 } | |
1119 | |
1120 // Debug Stuff | |
1121 if (_AD._adl_debug > 1) fprintf(stderr,"Frame Form: %s\n", desc); | |
1122 | |
1123 // Create the EncodeForm for the architecture description. | |
1124 _AD.addForm(frame); | |
1125 // skipws(); | |
1126 } | |
1127 | |
1128 //------------------------------stack_dir_parse-------------------------------- | |
1129 void ADLParser::stack_dir_parse(FrameForm *frame) { | |
1130 char *direction = parse_one_arg("stack direction entry"); | |
1131 if (strcmp(direction, "TOWARDS_LOW") == 0) { | |
1132 frame->_direction = false; | |
1133 } | |
1134 else if (strcmp(direction, "TOWARDS_HIGH") == 0) { | |
1135 frame->_direction = true; | |
1136 } | |
1137 else { | |
1138 parse_err(SYNERR, "invalid value inside stack direction entry.\n"); | |
1139 return; | |
1140 } | |
1141 } | |
1142 | |
1143 //------------------------------sync_stack_slots_parse------------------------- | |
1144 void ADLParser::sync_stack_slots_parse(FrameForm *frame) { | |
1145 // Assign value into frame form | |
1146 frame->_sync_stack_slots = parse_one_arg("sync stack slots entry"); | |
1147 } | |
1148 | |
1149 //------------------------------frame_pointer_parse---------------------------- | |
1150 void ADLParser::frame_pointer_parse(FrameForm *frame, bool native) { | |
1151 char *frame_pointer = parse_one_arg("frame pointer entry"); | |
1152 // Assign value into frame form | |
1153 if (native) { frame->_c_frame_pointer = frame_pointer; } | |
1154 else { frame->_frame_pointer = frame_pointer; } | |
1155 } | |
1156 | |
1157 //------------------------------interpreter_frame_pointer_parse---------------------------- | |
1158 void ADLParser::interpreter_frame_pointer_parse(FrameForm *frame, bool native) { | |
1159 frame->_interpreter_frame_pointer_reg = parse_one_arg("interpreter frame pointer entry"); | |
1160 } | |
1161 | |
1162 //------------------------------inline_cache_parse----------------------------- | |
1163 void ADLParser::inline_cache_parse(FrameForm *frame, bool native) { | |
1164 frame->_inline_cache_reg = parse_one_arg("inline cache reg entry"); | |
1165 } | |
1166 | |
1167 //------------------------------interpreter_method_oop_parse------------------ | |
1168 void ADLParser::interpreter_method_oop_parse(FrameForm *frame, bool native) { | |
1169 frame->_interpreter_method_oop_reg = parse_one_arg("method oop reg entry"); | |
1170 } | |
1171 | |
1172 //------------------------------cisc_spilling_operand_parse--------------------- | |
1173 void ADLParser::cisc_spilling_operand_name_parse(FrameForm *frame, bool native) { | |
1174 frame->_cisc_spilling_operand_name = parse_one_arg("cisc spilling operand name"); | |
1175 } | |
1176 | |
1177 //------------------------------stack_alignment_parse-------------------------- | |
1178 void ADLParser::stack_alignment_parse(FrameForm *frame) { | |
1179 char *alignment = parse_one_arg("stack alignment entry"); | |
1180 // Assign value into frame | |
1181 frame->_alignment = alignment; | |
1182 } | |
1183 | |
1184 //------------------------------parse_one_arg------------------------------- | |
1185 char *ADLParser::parse_one_arg(const char *description) { | |
1186 char *token = NULL; | |
1187 if(_curchar == '(') { | |
1188 next_char(); | |
1189 skipws(); | |
1190 token = get_expr(description, ")"); | |
1191 if (token == NULL) { | |
1192 parse_err(SYNERR, "missing value inside %s.\n", description); | |
1193 return NULL; | |
1194 } | |
1195 next_char(); // skip the close paren | |
1196 if(_curchar != ';') { // check for semi-colon | |
1197 parse_err(SYNERR, "missing %c in.\n", ';', description); | |
1198 return NULL; | |
1199 } | |
1200 next_char(); // skip the semi-colon | |
1201 } | |
1202 else { | |
1203 parse_err(SYNERR, "Missing %c in.\n", '(', description); | |
1204 return NULL; | |
1205 } | |
1206 | |
1207 trim(token); | |
1208 return token; | |
1209 } | |
1210 | |
1211 //------------------------------return_addr_parse------------------------------ | |
1212 void ADLParser::return_addr_parse(FrameForm *frame, bool native) { | |
1213 bool in_register = true; | |
1214 if(_curchar == '(') { | |
1215 next_char(); | |
1216 skipws(); | |
1217 char *token = get_ident(); | |
1218 if (token == NULL) { | |
1219 parse_err(SYNERR, "missing value inside return address entry.\n"); | |
1220 return; | |
1221 } | |
1222 // check for valid values for stack/register | |
1223 if (strcmp(token, "REG") == 0) { | |
1224 in_register = true; | |
1225 } | |
1226 else if (strcmp(token, "STACK") == 0) { | |
1227 in_register = false; | |
1228 } | |
1229 else { | |
1230 parse_err(SYNERR, "invalid value inside return_address entry.\n"); | |
1231 return; | |
1232 } | |
1233 if (native) { frame->_c_return_addr_loc = in_register; } | |
1234 else { frame->_return_addr_loc = in_register; } | |
1235 | |
1236 // Parse expression that specifies register or stack position | |
1237 skipws(); | |
1238 char *token2 = get_expr("return address entry", ")"); | |
1239 if (token2 == NULL) { | |
1240 parse_err(SYNERR, "missing value inside return address entry.\n"); | |
1241 return; | |
1242 } | |
1243 next_char(); // skip the close paren | |
1244 if (native) { frame->_c_return_addr = token2; } | |
1245 else { frame->_return_addr = token2; } | |
1246 | |
1247 if(_curchar != ';') { // check for semi-colon | |
1248 parse_err(SYNERR, "missing %c in return address entry.\n", ';'); | |
1249 return; | |
1250 } | |
1251 next_char(); // skip the semi-colon | |
1252 } | |
1253 else { | |
1254 parse_err(SYNERR, "Missing %c in return_address entry.\n", '('); | |
1255 } | |
1256 } | |
1257 | |
1258 //------------------------------preserve_stack_parse--------------------------- | |
1259 void ADLParser::preserve_stack_parse(FrameForm *frame) { | |
1260 if(_curchar == '(') { | |
1261 char *token = get_paren_expr("preserve_stack_slots"); | |
1262 frame->_in_preserve_slots = token; | |
1263 | |
1264 if(_curchar != ';') { // check for semi-colon | |
1265 parse_err(SYNERR, "missing %c in preserve stack slot entry.\n", ';'); | |
1266 return; | |
1267 } | |
1268 next_char(); // skip the semi-colon | |
1269 } | |
1270 else { | |
1271 parse_err(SYNERR, "Missing %c in preserve stack slot entry.\n", '('); | |
1272 } | |
1273 } | |
1274 | |
1275 //------------------------------calling_convention_parse----------------------- | |
1276 char *ADLParser::calling_convention_parse() { | |
1277 char *desc = NULL; // String representation of calling_convention | |
1278 | |
1279 skipws(); // Skip leading whitespace | |
1280 if ( (desc = find_cpp_block("calling convention block")) == NULL ) { | |
1281 parse_err(SYNERR, "incorrect or missing block for 'calling_convention'.\n"); | |
1282 } | |
1283 return desc; | |
1284 } | |
1285 | |
1286 //------------------------------return_value_parse----------------------------- | |
1287 char *ADLParser::return_value_parse() { | |
1288 char *desc = NULL; // String representation of calling_convention | |
1289 | |
1290 skipws(); // Skip leading whitespace | |
1291 if ( (desc = find_cpp_block("return value block")) == NULL ) { | |
1292 parse_err(SYNERR, "incorrect or missing block for 'return_value'.\n"); | |
1293 } | |
1294 return desc; | |
1295 } | |
1296 | |
1297 //------------------------------ins_pipe_parse--------------------------------- | |
1298 void ADLParser::ins_pipe_parse(InstructForm &instr) { | |
1299 char * ident; | |
1300 | |
1301 skipws(); | |
1302 if ( _curchar != '(' ) { // Check for delimiter | |
1303 parse_err(SYNERR, "missing \"(\" in ins_pipe definition\n"); | |
1304 return; | |
1305 } | |
1306 | |
1307 next_char(); | |
1308 ident = get_ident(); // Grab next identifier | |
1309 | |
1310 if (ident == NULL) { | |
1311 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar); | |
1312 return; | |
1313 } | |
1314 | |
1315 skipws(); | |
1316 if ( _curchar != ')' ) { // Check for delimiter | |
1317 parse_err(SYNERR, "missing \")\" in ins_pipe definition\n"); | |
1318 return; | |
1319 } | |
1320 | |
1321 next_char(); // skip the close paren | |
1322 if(_curchar != ';') { // check for semi-colon | |
1323 parse_err(SYNERR, "missing %c in return value entry.\n", ';'); | |
1324 return; | |
1325 } | |
1326 next_char(); // skip the semi-colon | |
1327 | |
1328 // Check ident for validity | |
1329 if (_AD._pipeline && !_AD._pipeline->_classlist.search(ident)) { | |
1330 parse_err(SYNERR, "\"%s\" is not a valid pipeline class\n", ident); | |
1331 return; | |
1332 } | |
1333 | |
1334 // Add this instruction to the list in the pipeline class | |
1335 _AD._pipeline->_classdict[ident]->is_pipeclass()->_instructs.addName(instr._ident); | |
1336 | |
1337 // Set the name of the pipeline class in the instruction | |
1338 instr._ins_pipe = ident; | |
1339 return; | |
1340 } | |
1341 | |
1342 //------------------------------pipe_parse------------------------------------- | |
1343 void ADLParser::pipe_parse(void) { | |
1344 PipelineForm *pipeline; // Encode class for instruction/operand | |
1345 char * ident; | |
1346 | |
1347 pipeline = new PipelineForm(); // Build new Source object | |
1348 _AD.addForm(pipeline); | |
1349 | |
1350 skipws(); // Skip leading whitespace | |
1351 // Check for block delimiter | |
1352 if ( (_curchar != '%') | |
1353 || ( next_char(), (_curchar != '{')) ) { | |
1354 parse_err(SYNERR, "missing '%{' in pipeline definition\n"); | |
1355 return; | |
1356 } | |
1357 next_char(); // Maintain the invariant | |
1358 do { | |
1359 ident = get_ident(); // Grab next identifier | |
1360 if (ident == NULL) { | |
1361 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar); | |
1362 continue; | |
1363 } | |
1364 if (!strcmp(ident, "resources" )) resource_parse(*pipeline); | |
1365 else if (!strcmp(ident, "pipe_desc" )) pipe_desc_parse(*pipeline); | |
1366 else if (!strcmp(ident, "pipe_class")) pipe_class_parse(*pipeline); | |
1367 else if (!strcmp(ident, "define")) { | |
1368 skipws(); | |
1369 if ( (_curchar != '%') | |
1370 || ( next_char(), (_curchar != '{')) ) { | |
1371 parse_err(SYNERR, "expected '%{'\n"); | |
1372 return; | |
1373 } | |
1374 next_char(); skipws(); | |
1375 | |
1376 char *node_class = get_ident(); | |
1377 if (node_class == NULL) { | |
1378 parse_err(SYNERR, "expected identifier, found \"%c\"\n", _curchar); | |
1379 return; | |
1380 } | |
1381 | |
1382 skipws(); | |
1383 if (_curchar != ',' && _curchar != '=') { | |
1384 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar); | |
1385 break; | |
1386 } | |
1387 next_char(); skipws(); | |
1388 | |
1389 char *pipe_class = get_ident(); | |
1390 if (pipe_class == NULL) { | |
1391 parse_err(SYNERR, "expected identifier, found \"%c\"\n", _curchar); | |
1392 return; | |
1393 } | |
1394 if (_curchar != ';' ) { | |
1395 parse_err(SYNERR, "expected `;`, found '%c'\n", _curchar); | |
1396 break; | |
1397 } | |
1398 next_char(); // Skip over semi-colon | |
1399 | |
1400 skipws(); | |
1401 if ( (_curchar != '%') | |
1402 || ( next_char(), (_curchar != '}')) ) { | |
1403 parse_err(SYNERR, "expected '%%}', found \"%c\"\n", _curchar); | |
1404 } | |
1405 next_char(); | |
1406 | |
1407 // Check ident for validity | |
1408 if (_AD._pipeline && !_AD._pipeline->_classlist.search(pipe_class)) { | |
1409 parse_err(SYNERR, "\"%s\" is not a valid pipeline class\n", pipe_class); | |
1410 return; | |
1411 } | |
1412 | |
1413 // Add this machine node to the list in the pipeline class | |
1414 _AD._pipeline->_classdict[pipe_class]->is_pipeclass()->_instructs.addName(node_class); | |
1415 | |
1416 MachNodeForm *machnode = new MachNodeForm(node_class); // Create new machnode form | |
1417 machnode->_machnode_pipe = pipe_class; | |
1418 | |
1419 _AD.addForm(machnode); | |
1420 } | |
1421 else if (!strcmp(ident, "attributes")) { | |
1422 bool vsi_seen = false, bhds_seen = false; | |
1423 | |
1424 skipws(); | |
1425 if ( (_curchar != '%') | |
1426 || ( next_char(), (_curchar != '{')) ) { | |
1427 parse_err(SYNERR, "expected '%{'\n"); | |
1428 return; | |
1429 } | |
1430 next_char(); skipws(); | |
1431 | |
1432 while (_curchar != '%') { | |
1433 ident = get_ident(); | |
1434 if (ident == NULL) | |
1435 break; | |
1436 | |
1437 if (!strcmp(ident, "variable_size_instructions")) { | |
1438 skipws(); | |
1439 if (_curchar == ';') { | |
1440 next_char(); skipws(); | |
1441 } | |
1442 | |
1443 pipeline->_variableSizeInstrs = true; | |
1444 vsi_seen = true; | |
1445 continue; | |
1446 } | |
1447 | |
1448 if (!strcmp(ident, "fixed_size_instructions")) { | |
1449 skipws(); | |
1450 if (_curchar == ';') { | |
1451 next_char(); skipws(); | |
1452 } | |
1453 | |
1454 pipeline->_variableSizeInstrs = false; | |
1455 vsi_seen = true; | |
1456 continue; | |
1457 } | |
1458 | |
1459 if (!strcmp(ident, "branch_has_delay_slot")) { | |
1460 skipws(); | |
1461 if (_curchar == ';') { | |
1462 next_char(); skipws(); | |
1463 } | |
1464 | |
1465 pipeline->_branchHasDelaySlot = true; | |
1466 bhds_seen = true; | |
1467 continue; | |
1468 } | |
1469 | |
1470 if (!strcmp(ident, "max_instructions_per_bundle")) { | |
1471 skipws(); | |
1472 if (_curchar != '=') { | |
1473 parse_err(SYNERR, "expected `=`\n"); | |
1474 break; | |
1475 } | |
1476 | |
1477 next_char(); skipws(); | |
1478 pipeline->_maxInstrsPerBundle = get_int(); | |
1479 skipws(); | |
1480 | |
1481 if (_curchar == ';') { | |
1482 next_char(); skipws(); | |
1483 } | |
1484 | |
1485 continue; | |
1486 } | |
1487 | |
1488 if (!strcmp(ident, "max_bundles_per_cycle")) { | |
1489 skipws(); | |
1490 if (_curchar != '=') { | |
1491 parse_err(SYNERR, "expected `=`\n"); | |
1492 break; | |
1493 } | |
1494 | |
1495 next_char(); skipws(); | |
1496 pipeline->_maxBundlesPerCycle = get_int(); | |
1497 skipws(); | |
1498 | |
1499 if (_curchar == ';') { | |
1500 next_char(); skipws(); | |
1501 } | |
1502 | |
1503 continue; | |
1504 } | |
1505 | |
1506 if (!strcmp(ident, "instruction_unit_size")) { | |
1507 skipws(); | |
1508 if (_curchar != '=') { | |
1509 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar); | |
1510 break; | |
1511 } | |
1512 | |
1513 next_char(); skipws(); | |
1514 pipeline->_instrUnitSize = get_int(); | |
1515 skipws(); | |
1516 | |
1517 if (_curchar == ';') { | |
1518 next_char(); skipws(); | |
1519 } | |
1520 | |
1521 continue; | |
1522 } | |
1523 | |
1524 if (!strcmp(ident, "bundle_unit_size")) { | |
1525 skipws(); | |
1526 if (_curchar != '=') { | |
1527 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar); | |
1528 break; | |
1529 } | |
1530 | |
1531 next_char(); skipws(); | |
1532 pipeline->_bundleUnitSize = get_int(); | |
1533 skipws(); | |
1534 | |
1535 if (_curchar == ';') { | |
1536 next_char(); skipws(); | |
1537 } | |
1538 | |
1539 continue; | |
1540 } | |
1541 | |
1542 if (!strcmp(ident, "instruction_fetch_unit_size")) { | |
1543 skipws(); | |
1544 if (_curchar != '=') { | |
1545 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar); | |
1546 break; | |
1547 } | |
1548 | |
1549 next_char(); skipws(); | |
1550 pipeline->_instrFetchUnitSize = get_int(); | |
1551 skipws(); | |
1552 | |
1553 if (_curchar == ';') { | |
1554 next_char(); skipws(); | |
1555 } | |
1556 | |
1557 continue; | |
1558 } | |
1559 | |
1560 if (!strcmp(ident, "instruction_fetch_units")) { | |
1561 skipws(); | |
1562 if (_curchar != '=') { | |
1563 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar); | |
1564 break; | |
1565 } | |
1566 | |
1567 next_char(); skipws(); | |
1568 pipeline->_instrFetchUnits = get_int(); | |
1569 skipws(); | |
1570 | |
1571 if (_curchar == ';') { | |
1572 next_char(); skipws(); | |
1573 } | |
1574 | |
1575 continue; | |
1576 } | |
1577 | |
1578 if (!strcmp(ident, "nops")) { | |
1579 skipws(); | |
1580 if (_curchar != '(') { | |
1581 parse_err(SYNERR, "expected `(`, found '%c'\n", _curchar); | |
1582 break; | |
1583 } | |
1584 | |
1585 next_char(); skipws(); | |
1586 | |
1587 while (_curchar != ')') { | |
1588 ident = get_ident(); | |
1589 if (ident == NULL) { | |
1590 parse_err(SYNERR, "expected identifier for nop instruction, found '%c'\n", _curchar); | |
1591 break; | |
1592 } | |
1593 | |
1594 pipeline->_noplist.addName(ident); | |
1595 pipeline->_nopcnt++; | |
1596 skipws(); | |
1597 | |
1598 if (_curchar == ',') { | |
1599 next_char(); skipws(); | |
1600 } | |
1601 } | |
1602 | |
1603 next_char(); skipws(); | |
1604 | |
1605 if (_curchar == ';') { | |
1606 next_char(); skipws(); | |
1607 } | |
1608 | |
1609 continue; | |
1610 } | |
1611 | |
1612 parse_err(SYNERR, "unknown specifier \"%s\"\n", ident); | |
1613 } | |
1614 | |
1615 if ( (_curchar != '%') | |
1616 || ( next_char(), (_curchar != '}')) ) { | |
1617 parse_err(SYNERR, "expected '%}', found \"%c\"\n", _curchar); | |
1618 } | |
1619 next_char(); skipws(); | |
1620 | |
1621 if (pipeline->_maxInstrsPerBundle == 0) | |
1622 parse_err(SYNERR, "\"max_instructions_per_bundle\" unspecified\n"); | |
1623 if (pipeline->_instrUnitSize == 0 && pipeline->_bundleUnitSize == 0) | |
1624 parse_err(SYNERR, "\"instruction_unit_size\" and \"bundle_unit_size\" unspecified\n"); | |
1625 if (pipeline->_instrFetchUnitSize == 0) | |
1626 parse_err(SYNERR, "\"instruction_fetch_unit_size\" unspecified\n"); | |
1627 if (pipeline->_instrFetchUnits == 0) | |
1628 parse_err(SYNERR, "\"instruction_fetch_units\" unspecified\n"); | |
1629 if (!vsi_seen) | |
1630 parse_err(SYNERR, "\"variable_size_instruction\" or \"fixed_size_instruction\" unspecified\n"); | |
1631 } | |
1632 else { // Done with staticly defined parts of instruction definition | |
1633 parse_err(SYNERR, "expected one of \"resources\", \"pipe_desc\", \"pipe_class\", found \"%s\"\n", ident); | |
1634 return; | |
1635 } | |
1636 skipws(); | |
1637 if (_curchar == ';') | |
1638 skipws(); | |
1639 } while(_curchar != '%'); | |
1640 | |
1641 next_char(); | |
1642 if (_curchar != '}') { | |
1643 parse_err(SYNERR, "missing \"%}\" in pipeline definition\n"); | |
1644 return; | |
1645 } | |
1646 | |
1647 next_char(); | |
1648 } | |
1649 | |
1650 //------------------------------resource_parse---------------------------- | |
1651 void ADLParser::resource_parse(PipelineForm &pipeline) { | |
1652 ResourceForm *resource; | |
1653 char * ident; | |
1654 char * expr; | |
1655 unsigned mask; | |
1656 pipeline._rescount = 0; | |
1657 | |
1658 skipws(); // Skip leading whitespace | |
1659 | |
1660 if (_curchar != '(') { | |
1661 parse_err(SYNERR, "missing \"(\" in resource definition\n"); | |
1662 return; | |
1663 } | |
1664 | |
1665 do { | |
1666 next_char(); // Skip "(" or "," | |
1667 ident = get_ident(); // Grab next identifier | |
1668 | |
1669 if (ident == NULL) { | |
1670 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar); | |
1671 return; | |
1672 } | |
1673 skipws(); | |
1674 | |
1675 if (_curchar != '=') { | |
1676 mask = (1 << pipeline._rescount++); | |
1677 } | |
1678 else { | |
1679 next_char(); skipws(); | |
1680 expr = get_ident(); // Grab next identifier | |
1681 if (expr == NULL) { | |
1682 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar); | |
1683 return; | |
1684 } | |
1685 resource = (ResourceForm *) pipeline._resdict[expr]; | |
1686 if (resource == NULL) { | |
1687 parse_err(SYNERR, "resource \"%s\" is not defined\n", expr); | |
1688 return; | |
1689 } | |
1690 mask = resource->mask(); | |
1691 | |
1692 skipws(); | |
1693 while (_curchar == '|') { | |
1694 next_char(); skipws(); | |
1695 | |
1696 expr = get_ident(); // Grab next identifier | |
1697 if (expr == NULL) { | |
1698 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar); | |
1699 return; | |
1700 } | |
1701 | |
1702 resource = (ResourceForm *) pipeline._resdict[expr]; // Look up the value | |
1703 if (resource == NULL) { | |
1704 parse_err(SYNERR, "resource \"%s\" is not defined\n", expr); | |
1705 return; | |
1706 } | |
1707 | |
1708 mask |= resource->mask(); | |
1709 skipws(); | |
1710 } | |
1711 } | |
1712 | |
1713 resource = new ResourceForm(mask); | |
1714 | |
1715 pipeline._resdict.Insert(ident, resource); | |
1716 pipeline._reslist.addName(ident); | |
1717 } while (_curchar == ','); | |
1718 | |
1719 if (_curchar != ')') { | |
1720 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar); | |
1721 return; | |
1722 } | |
1723 | |
1724 next_char(); // Skip ")" | |
1725 if (_curchar == ';') | |
1726 next_char(); // Skip ";" | |
1727 } | |
1728 | |
1729 //------------------------------resource_parse---------------------------- | |
1730 void ADLParser::pipe_desc_parse(PipelineForm &pipeline) { | |
1731 char * ident; | |
1732 | |
1733 skipws(); // Skip leading whitespace | |
1734 | |
1735 if (_curchar != '(') { | |
1736 parse_err(SYNERR, "missing \"(\" in pipe_desc definition\n"); | |
1737 return; | |
1738 } | |
1739 | |
1740 do { | |
1741 next_char(); // Skip "(" or "," | |
1742 ident = get_ident(); // Grab next identifier | |
1743 if (ident == NULL) { | |
1744 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar); | |
1745 return; | |
1746 } | |
1747 | |
1748 // Add the name to the list | |
1749 pipeline._stages.addName(ident); | |
1750 pipeline._stagecnt++; | |
1751 | |
1752 skipws(); | |
1753 } while (_curchar == ','); | |
1754 | |
1755 if (_curchar != ')') { | |
1756 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar); | |
1757 return; | |
1758 } | |
1759 | |
1760 next_char(); // Skip ")" | |
1761 if (_curchar == ';') | |
1762 next_char(); // Skip ";" | |
1763 } | |
1764 | |
1765 //------------------------------pipe_class_parse-------------------------- | |
1766 void ADLParser::pipe_class_parse(PipelineForm &pipeline) { | |
1767 PipeClassForm *pipe_class; | |
1768 char * ident; | |
1769 char * stage; | |
1770 char * read_or_write; | |
1771 int is_write; | |
1772 int is_read; | |
1773 OperandForm *oper; | |
1774 | |
1775 skipws(); // Skip leading whitespace | |
1776 | |
1777 ident = get_ident(); // Grab next identifier | |
1778 | |
1779 if (ident == NULL) { | |
1780 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar); | |
1781 return; | |
1782 } | |
1783 | |
1784 // Create a record for the pipe_class | |
1785 pipe_class = new PipeClassForm(ident, ++pipeline._classcnt); | |
1786 pipeline._classdict.Insert(ident, pipe_class); | |
1787 pipeline._classlist.addName(ident); | |
1788 | |
1789 // Then get the operands | |
1790 skipws(); | |
1791 if (_curchar != '(') { | |
1792 parse_err(SYNERR, "missing \"(\" in pipe_class definition\n"); | |
1793 } | |
1794 // Parse the operand list | |
1795 else get_oplist(pipe_class->_parameters, pipe_class->_localNames); | |
1796 skipws(); // Skip leading whitespace | |
1797 // Check for block delimiter | |
1798 if ( (_curchar != '%') | |
1799 || ( next_char(), (_curchar != '{')) ) { | |
1800 parse_err(SYNERR, "missing \"%{\" in pipe_class definition\n"); | |
1801 return; | |
1802 } | |
1803 next_char(); | |
1804 | |
1805 do { | |
1806 ident = get_ident(); // Grab next identifier | |
1807 if (ident == NULL) { | |
1808 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar); | |
1809 continue; | |
1810 } | |
1811 skipws(); | |
1812 | |
1813 if (!strcmp(ident, "fixed_latency")) { | |
1814 skipws(); | |
1815 if (_curchar != '(') { | |
1816 parse_err(SYNERR, "missing \"(\" in latency definition\n"); | |
1817 return; | |
1818 } | |
1819 next_char(); skipws(); | |
1820 if( !isdigit(_curchar) ) { | |
1821 parse_err(SYNERR, "number expected for \"%c\" in latency definition\n", _curchar); | |
1822 return; | |
1823 } | |
1824 int fixed_latency = get_int(); | |
1825 skipws(); | |
1826 if (_curchar != ')') { | |
1827 parse_err(SYNERR, "missing \")\" in latency definition\n"); | |
1828 return; | |
1829 } | |
1830 next_char(); skipws(); | |
1831 if (_curchar != ';') { | |
1832 parse_err(SYNERR, "missing \";\" in latency definition\n"); | |
1833 return; | |
1834 } | |
1835 | |
1836 pipe_class->setFixedLatency(fixed_latency); | |
1837 next_char(); skipws(); | |
1838 continue; | |
1839 } | |
1840 | |
1841 if (!strcmp(ident, "zero_instructions") || | |
1842 !strcmp(ident, "no_instructions")) { | |
1843 skipws(); | |
1844 if (_curchar != ';') { | |
1845 parse_err(SYNERR, "missing \";\" in latency definition\n"); | |
1846 return; | |
1847 } | |
1848 | |
1849 pipe_class->setInstructionCount(0); | |
1850 next_char(); skipws(); | |
1851 continue; | |
1852 } | |
1853 | |
1854 if (!strcmp(ident, "one_instruction_with_delay_slot") || | |
1855 !strcmp(ident, "single_instruction_with_delay_slot")) { | |
1856 skipws(); | |
1857 if (_curchar != ';') { | |
1858 parse_err(SYNERR, "missing \";\" in latency definition\n"); | |
1859 return; | |
1860 } | |
1861 | |
1862 pipe_class->setInstructionCount(1); | |
1863 pipe_class->setBranchDelay(true); | |
1864 next_char(); skipws(); | |
1865 continue; | |
1866 } | |
1867 | |
1868 if (!strcmp(ident, "one_instruction") || | |
1869 !strcmp(ident, "single_instruction")) { | |
1870 skipws(); | |
1871 if (_curchar != ';') { | |
1872 parse_err(SYNERR, "missing \";\" in latency definition\n"); | |
1873 return; | |
1874 } | |
1875 | |
1876 pipe_class->setInstructionCount(1); | |
1877 next_char(); skipws(); | |
1878 continue; | |
1879 } | |
1880 | |
1881 if (!strcmp(ident, "instructions_in_first_bundle") || | |
1882 !strcmp(ident, "instruction_count")) { | |
1883 skipws(); | |
1884 | |
1885 int number_of_instructions = 1; | |
1886 | |
1887 if (_curchar != '(') { | |
1888 parse_err(SYNERR, "\"(\" expected at \"%c\"\n", _curchar); | |
1889 continue; | |
1890 } | |
1891 | |
1892 next_char(); skipws(); | |
1893 number_of_instructions = get_int(); | |
1894 | |
1895 skipws(); | |
1896 if (_curchar != ')') { | |
1897 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar); | |
1898 continue; | |
1899 } | |
1900 | |
1901 next_char(); skipws(); | |
1902 if (_curchar != ';') { | |
1903 parse_err(SYNERR, "missing \";\" in latency definition\n"); | |
1904 return; | |
1905 } | |
1906 | |
1907 pipe_class->setInstructionCount(number_of_instructions); | |
1908 next_char(); skipws(); | |
1909 continue; | |
1910 } | |
1911 | |
1912 if (!strcmp(ident, "multiple_bundles")) { | |
1913 skipws(); | |
1914 if (_curchar != ';') { | |
1915 parse_err(SYNERR, "missing \";\" after multiple bundles\n"); | |
1916 return; | |
1917 } | |
1918 | |
1919 pipe_class->setMultipleBundles(true); | |
1920 next_char(); skipws(); | |
1921 continue; | |
1922 } | |
1923 | |
1924 if (!strcmp(ident, "has_delay_slot")) { | |
1925 skipws(); | |
1926 if (_curchar != ';') { | |
1927 parse_err(SYNERR, "missing \";\" after \"has_delay_slot\"\n"); | |
1928 return; | |
1929 } | |
1930 | |
1931 pipe_class->setBranchDelay(true); | |
1932 next_char(); skipws(); | |
1933 continue; | |
1934 } | |
1935 | |
1936 if (!strcmp(ident, "force_serialization")) { | |
1937 skipws(); | |
1938 if (_curchar != ';') { | |
1939 parse_err(SYNERR, "missing \";\" after \"force_serialization\"\n"); | |
1940 return; | |
1941 } | |
1942 | |
1943 pipe_class->setForceSerialization(true); | |
1944 next_char(); skipws(); | |
1945 continue; | |
1946 } | |
1947 | |
1948 if (!strcmp(ident, "may_have_no_code")) { | |
1949 skipws(); | |
1950 if (_curchar != ';') { | |
1951 parse_err(SYNERR, "missing \";\" after \"may_have_no_code\"\n"); | |
1952 return; | |
1953 } | |
1954 | |
1955 pipe_class->setMayHaveNoCode(true); | |
1956 next_char(); skipws(); | |
1957 continue; | |
1958 } | |
1959 | |
1960 const Form *parm = pipe_class->_localNames[ident]; | |
1961 if (parm != NULL) { | |
1962 oper = parm->is_operand(); | |
1963 if (oper == NULL && !parm->is_opclass()) { | |
1964 parse_err(SYNERR, "operand name expected at %s\n", ident); | |
1965 continue; | |
1966 } | |
1967 | |
1968 if (_curchar != ':') { | |
1969 parse_err(SYNERR, "\":\" expected at \"%c\"\n", _curchar); | |
1970 continue; | |
1971 } | |
1972 next_char(); skipws(); | |
1973 stage = get_ident(); | |
1974 if (stage == NULL) { | |
1975 parse_err(SYNERR, "pipeline stage identifier expected at \"%c\"\n", _curchar); | |
1976 continue; | |
1977 } | |
1978 | |
1979 skipws(); | |
1980 if (_curchar != '(') { | |
1981 parse_err(SYNERR, "\"(\" expected at \"%c\"\n", _curchar); | |
1982 continue; | |
1983 } | |
1984 | |
1985 next_char(); | |
1986 read_or_write = get_ident(); | |
1987 if (read_or_write == NULL) { | |
1988 parse_err(SYNERR, "\"read\" or \"write\" expected at \"%c\"\n", _curchar); | |
1989 continue; | |
1990 } | |
1991 | |
1992 is_read = strcmp(read_or_write, "read") == 0; | |
1993 is_write = strcmp(read_or_write, "write") == 0; | |
1994 if (!is_read && !is_write) { | |
1995 parse_err(SYNERR, "\"read\" or \"write\" expected at \"%c\"\n", _curchar); | |
1996 continue; | |
1997 } | |
1998 | |
1999 skipws(); | |
2000 if (_curchar != ')') { | |
2001 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar); | |
2002 continue; | |
2003 } | |
2004 | |
2005 next_char(); skipws(); | |
2006 int more_instrs = 0; | |
2007 if (_curchar == '+') { | |
2008 next_char(); skipws(); | |
2009 if (_curchar < '0' || _curchar > '9') { | |
2010 parse_err(SYNERR, "<number> expected at \"%c\"\n", _curchar); | |
2011 continue; | |
2012 } | |
2013 while (_curchar >= '0' && _curchar <= '9') { | |
2014 more_instrs *= 10; | |
2015 more_instrs += _curchar - '0'; | |
2016 next_char(); | |
2017 } | |
2018 skipws(); | |
2019 } | |
2020 | |
2021 PipeClassOperandForm *pipe_operand = new PipeClassOperandForm(stage, is_write, more_instrs); | |
2022 pipe_class->_localUsage.Insert(ident, pipe_operand); | |
2023 | |
2024 if (_curchar == '%') | |
2025 continue; | |
2026 | |
2027 if (_curchar != ';') { | |
2028 parse_err(SYNERR, "\";\" expected at \"%c\"\n", _curchar); | |
2029 continue; | |
2030 } | |
2031 next_char(); skipws(); | |
2032 continue; | |
2033 } | |
2034 | |
2035 // Scan for Resource Specifier | |
2036 const Form *res = pipeline._resdict[ident]; | |
2037 if (res != NULL) { | |
2038 int cyclecnt = 1; | |
2039 if (_curchar != ':') { | |
2040 parse_err(SYNERR, "\":\" expected at \"%c\"\n", _curchar); | |
2041 continue; | |
2042 } | |
2043 next_char(); skipws(); | |
2044 stage = get_ident(); | |
2045 if (stage == NULL) { | |
2046 parse_err(SYNERR, "pipeline stage identifier expected at \"%c\"\n", _curchar); | |
2047 continue; | |
2048 } | |
2049 | |
2050 skipws(); | |
2051 if (_curchar == '(') { | |
2052 next_char(); | |
2053 cyclecnt = get_int(); | |
2054 | |
2055 skipws(); | |
2056 if (_curchar != ')') { | |
2057 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar); | |
2058 continue; | |
2059 } | |
2060 | |
2061 next_char(); skipws(); | |
2062 } | |
2063 | |
2064 PipeClassResourceForm *resource = new PipeClassResourceForm(ident, stage, cyclecnt); | |
2065 int stagenum = pipeline._stages.index(stage); | |
2066 if (pipeline._maxcycleused < (stagenum+cyclecnt)) | |
2067 pipeline._maxcycleused = (stagenum+cyclecnt); | |
2068 pipe_class->_resUsage.addForm(resource); | |
2069 | |
2070 if (_curchar == '%') | |
2071 continue; | |
2072 | |
2073 if (_curchar != ';') { | |
2074 parse_err(SYNERR, "\";\" expected at \"%c\"\n", _curchar); | |
2075 continue; | |
2076 } | |
2077 next_char(); skipws(); | |
2078 continue; | |
2079 } | |
2080 | |
2081 parse_err(SYNERR, "resource expected at \"%s\"\n", ident); | |
2082 return; | |
2083 } while(_curchar != '%'); | |
2084 | |
2085 next_char(); | |
2086 if (_curchar != '}') { | |
2087 parse_err(SYNERR, "missing \"%}\" in pipe_class definition\n"); | |
2088 return; | |
2089 } | |
2090 | |
2091 next_char(); | |
2092 } | |
2093 | |
2094 //------------------------------peep_parse------------------------------------- | |
2095 void ADLParser::peep_parse(void) { | |
2096 Peephole *peep; // Pointer to current peephole rule form | |
2097 char *desc = NULL; // String representation of rule | |
2098 | |
2099 skipws(); // Skip leading whitespace | |
2100 | |
2101 peep = new Peephole(); // Build new Peephole object | |
2102 // Check for open block sequence | |
2103 skipws(); // Skip leading whitespace | |
2104 if (_curchar == '%' && *(_ptr+1) == '{') { | |
2105 next_char(); next_char(); // Skip "%{" | |
2106 skipws(); | |
2107 while (_curchar != '%' && *(_ptr+1) != '}') { | |
2108 char *token = get_ident(); | |
2109 if (token == NULL) { | |
2110 parse_err(SYNERR, "missing identifier inside peephole rule.\n"); | |
2111 return; | |
2112 } | |
2113 // check for legal subsections of peephole rule | |
2114 if (strcmp(token,"peepmatch")==0) { | |
2115 peep_match_parse(*peep); } | |
2116 else if (strcmp(token,"peepconstraint")==0) { | |
2117 peep_constraint_parse(*peep); } | |
2118 else if (strcmp(token,"peepreplace")==0) { | |
2119 peep_replace_parse(*peep); } | |
2120 else { | |
2121 parse_err(SYNERR, "expected peepmatch, peepconstraint, or peepreplace for identifier %s.\n", token); | |
2122 } | |
2123 skipws(); | |
2124 } | |
2125 } | |
2126 else { | |
2127 parse_err(SYNERR, "Missing %%{ ... %%} block after peephole keyword.\n"); | |
2128 return; | |
2129 } | |
2130 next_char(); // Skip past '%' | |
2131 next_char(); // Skip past '}' | |
2132 } | |
2133 | |
2134 // ******************** Private Level 2 Parse Functions ******************** | |
2135 //------------------------------constraint_parse------------------------------ | |
2136 Constraint *ADLParser::constraint_parse(void) { | |
2137 char *func; | |
2138 char *arg; | |
2139 | |
2140 // Check for constraint expression | |
2141 skipws(); | |
2142 if (_curchar != '(') { | |
2143 parse_err(SYNERR, "missing constraint expression, (...)\n"); | |
2144 return NULL; | |
2145 } | |
2146 next_char(); // Skip past '(' | |
2147 | |
2148 // Get constraint function | |
2149 skipws(); | |
2150 func = get_ident(); | |
2151 if (func == NULL) { | |
2152 parse_err(SYNERR, "missing function in constraint expression.\n"); | |
2153 return NULL; | |
2154 } | |
2155 if (strcmp(func,"ALLOC_IN_RC")==0 | |
2156 || strcmp(func,"IS_R_CLASS")==0) { | |
2157 // Check for '(' before argument | |
2158 skipws(); | |
2159 if (_curchar != '(') { | |
2160 parse_err(SYNERR, "missing '(' for constraint function's argument.\n"); | |
2161 return NULL; | |
2162 } | |
2163 next_char(); | |
2164 | |
2165 // Get it's argument | |
2166 skipws(); | |
2167 arg = get_ident(); | |
2168 if (arg == NULL) { | |
2169 parse_err(SYNERR, "missing argument for constraint function %s\n",func); | |
2170 return NULL; | |
2171 } | |
2172 // Check for ')' after argument | |
2173 skipws(); | |
2174 if (_curchar != ')') { | |
2175 parse_err(SYNERR, "missing ')' after constraint function argument %s\n",arg); | |
2176 return NULL; | |
2177 } | |
2178 next_char(); | |
2179 } else { | |
2180 parse_err(SYNERR, "Invalid constraint function %s\n",func); | |
2181 return NULL; | |
2182 } | |
2183 | |
2184 // Check for closing paren and ';' | |
2185 skipws(); | |
2186 if (_curchar != ')') { | |
2187 parse_err(SYNERR, "Missing ')' for constraint function %s\n",func); | |
2188 return NULL; | |
2189 } | |
2190 next_char(); | |
2191 skipws(); | |
2192 if (_curchar != ';') { | |
2193 parse_err(SYNERR, "Missing ';' after constraint.\n"); | |
2194 return NULL; | |
2195 } | |
2196 next_char(); | |
2197 | |
2198 // Create new "Constraint" | |
2199 Constraint *constraint = new Constraint(func,arg); | |
2200 return constraint; | |
2201 } | |
2202 | |
2203 //------------------------------constr_parse----------------------------------- | |
2204 ConstructRule *ADLParser::construct_parse(void) { | |
2205 return NULL; | |
2206 } | |
2207 | |
2208 | |
2209 //------------------------------reg_def_parse---------------------------------- | |
2210 void ADLParser::reg_def_parse(void) { | |
2211 char *rname; // Name of register being defined | |
2212 | |
2213 // Get register name | |
2214 skipws(); // Skip whitespace | |
2215 rname = get_ident(); | |
2216 if (rname == NULL) { | |
2217 parse_err(SYNERR, "missing register name after reg_def\n"); | |
2218 return; | |
2219 } | |
2220 | |
2221 // Check for definition of register calling convention (save on call, ...), | |
2222 // register save type, and register encoding value. | |
2223 skipws(); | |
2224 char *callconv = NULL; | |
2225 char *c_conv = NULL; | |
2226 char *idealtype = NULL; | |
2227 char *encoding = NULL; | |
2228 char *concrete = NULL; | |
2229 if (_curchar == '(') { | |
2230 next_char(); | |
2231 callconv = get_ident(); | |
2232 // Parse the internal calling convention, must be NS, SOC, SOE, or AS. | |
2233 if (callconv == NULL) { | |
2234 parse_err(SYNERR, "missing register calling convention value\n"); | |
2235 return; | |
2236 } | |
2237 if(strcmp(callconv, "SOC") && strcmp(callconv,"SOE") && | |
2238 strcmp(callconv, "NS") && strcmp(callconv, "AS")) { | |
2239 parse_err(SYNERR, "invalid value for register calling convention\n"); | |
2240 } | |
2241 skipws(); | |
2242 if (_curchar != ',') { | |
2243 parse_err(SYNERR, "missing comma in register definition statement\n"); | |
2244 return; | |
2245 } | |
2246 next_char(); | |
2247 | |
2248 // Parse the native calling convention, must be NS, SOC, SOE, AS | |
2249 c_conv = get_ident(); | |
2250 if (c_conv == NULL) { | |
2251 parse_err(SYNERR, "missing register native calling convention value\n"); | |
2252 return; | |
2253 } | |
2254 if(strcmp(c_conv, "SOC") && strcmp(c_conv,"SOE") && | |
2255 strcmp(c_conv, "NS") && strcmp(c_conv, "AS")) { | |
2256 parse_err(SYNERR, "invalid value for register calling convention\n"); | |
2257 } | |
2258 skipws(); | |
2259 if (_curchar != ',') { | |
2260 parse_err(SYNERR, "missing comma in register definition statement\n"); | |
2261 return; | |
2262 } | |
2263 next_char(); | |
2264 skipws(); | |
2265 | |
2266 // Parse the ideal save type | |
2267 idealtype = get_ident(); | |
2268 if (idealtype == NULL) { | |
2269 parse_err(SYNERR, "missing register save type value\n"); | |
2270 return; | |
2271 } | |
2272 skipws(); | |
2273 if (_curchar != ',') { | |
2274 parse_err(SYNERR, "missing comma in register definition statement\n"); | |
2275 return; | |
2276 } | |
2277 next_char(); | |
2278 skipws(); | |
2279 | |
2280 // Parse the encoding value | |
2281 encoding = get_expr("encoding", ","); | |
2282 if (encoding == NULL) { | |
2283 parse_err(SYNERR, "missing register encoding value\n"); | |
2284 return; | |
2285 } | |
2286 trim(encoding); | |
2287 if (_curchar != ',') { | |
2288 parse_err(SYNERR, "missing comma in register definition statement\n"); | |
2289 return; | |
2290 } | |
2291 next_char(); | |
2292 skipws(); | |
2293 // Parse the concrete name type | |
2294 // concrete = get_ident(); | |
2295 concrete = get_expr("concrete", ")"); | |
2296 if (concrete == NULL) { | |
2297 parse_err(SYNERR, "missing vm register name value\n"); | |
2298 return; | |
2299 } | |
2300 | |
2301 if (_curchar != ')') { | |
2302 parse_err(SYNERR, "missing ')' in register definition statement\n"); | |
2303 return; | |
2304 } | |
2305 next_char(); | |
2306 } | |
2307 | |
2308 // Check for closing ';' | |
2309 skipws(); | |
2310 if (_curchar != ';') { | |
2311 parse_err(SYNERR, "missing ';' after reg_def\n"); | |
2312 return; | |
2313 } | |
2314 next_char(); // move past ';' | |
2315 | |
2316 // Debug Stuff | |
2317 if (_AD._adl_debug > 1) { | |
2318 fprintf(stderr,"Register Definition: %s ( %s, %s %s )\n", rname, | |
2319 (callconv ? callconv : ""), (c_conv ? c_conv : ""), concrete); | |
2320 } | |
2321 | |
2322 // Record new register definition. | |
2323 _AD._register->addRegDef(rname, callconv, c_conv, idealtype, encoding, concrete); | |
2324 return; | |
2325 } | |
2326 | |
2327 //------------------------------reg_class_parse-------------------------------- | |
2328 void ADLParser::reg_class_parse(void) { | |
2329 char *cname; // Name of register class being defined | |
2330 | |
2331 // Get register class name | |
2332 skipws(); // Skip leading whitespace | |
2333 cname = get_ident(); | |
2334 if (cname == NULL) { | |
2335 parse_err(SYNERR, "missing register class name after 'reg_class'\n"); | |
2336 return; | |
2337 } | |
2338 // Debug Stuff | |
2339 if (_AD._adl_debug >1) fprintf(stderr,"Register Class: %s\n", cname); | |
2340 | |
2341 RegClass *reg_class = _AD._register->addRegClass(cname); | |
2342 | |
2343 // Collect registers in class | |
2344 skipws(); | |
2345 if (_curchar == '(') { | |
2346 next_char(); // Skip '(' | |
2347 skipws(); | |
2348 while (_curchar != ')') { | |
2349 char *rname = get_ident(); | |
2350 if (rname==NULL) { | |
2351 parse_err(SYNERR, "missing identifier inside reg_class list.\n"); | |
2352 return; | |
2353 } | |
2354 RegDef *regDef = _AD._register->getRegDef(rname); | |
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2355 if (!regDef) { |
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2356 parse_err(SEMERR, "unknown identifier %s inside reg_class list.\n", rname); |
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2357 } else { |
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2358 reg_class->addReg(regDef); // add regDef to regClass |
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2359 } |
0 | 2360 |
2361 // Check for ',' and position to next token. | |
2362 skipws(); | |
2363 if (_curchar == ',') { | |
2364 next_char(); // Skip trailing ',' | |
2365 skipws(); | |
2366 } | |
2367 } | |
2368 next_char(); // Skip closing ')' | |
2369 } | |
2370 | |
2371 // Check for terminating ';' | |
2372 skipws(); | |
2373 if (_curchar != ';') { | |
2374 parse_err(SYNERR, "missing ';' at end of reg_class definition.\n"); | |
2375 return; | |
2376 } | |
2377 next_char(); // Skip trailing ';' | |
2378 | |
2379 // Check RegClass size, must be <= 32 registers in class. | |
2380 | |
2381 return; | |
2382 } | |
2383 | |
2384 //------------------------------alloc_class_parse------------------------------ | |
2385 void ADLParser::alloc_class_parse(void) { | |
2386 char *name; // Name of allocation class being defined | |
2387 | |
2388 // Get allocation class name | |
2389 skipws(); // Skip leading whitespace | |
2390 name = get_ident(); | |
2391 if (name == NULL) { | |
2392 parse_err(SYNERR, "missing allocation class name after 'reg_class'\n"); | |
2393 return; | |
2394 } | |
2395 // Debug Stuff | |
2396 if (_AD._adl_debug >1) fprintf(stderr,"Allocation Class: %s\n", name); | |
2397 | |
2398 AllocClass *alloc_class = _AD._register->addAllocClass(name); | |
2399 | |
2400 // Collect registers in class | |
2401 skipws(); | |
2402 if (_curchar == '(') { | |
2403 next_char(); // Skip '(' | |
2404 skipws(); | |
2405 while (_curchar != ')') { | |
2406 char *rname = get_ident(); | |
2407 if (rname==NULL) { | |
2408 parse_err(SYNERR, "missing identifier inside reg_class list.\n"); | |
2409 return; | |
2410 } | |
2411 // Check if name is a RegDef | |
2412 RegDef *regDef = _AD._register->getRegDef(rname); | |
2413 if (regDef) { | |
2414 alloc_class->addReg(regDef); // add regDef to allocClass | |
2415 } else { | |
2416 | |
2417 // name must be a RegDef or a RegClass | |
2418 parse_err(SYNERR, "name %s should be a previously defined reg_def.\n", rname); | |
2419 return; | |
2420 } | |
2421 | |
2422 // Check for ',' and position to next token. | |
2423 skipws(); | |
2424 if (_curchar == ',') { | |
2425 next_char(); // Skip trailing ',' | |
2426 skipws(); | |
2427 } | |
2428 } | |
2429 next_char(); // Skip closing ')' | |
2430 } | |
2431 | |
2432 // Check for terminating ';' | |
2433 skipws(); | |
2434 if (_curchar != ';') { | |
2435 parse_err(SYNERR, "missing ';' at end of reg_class definition.\n"); | |
2436 return; | |
2437 } | |
2438 next_char(); // Skip trailing ';' | |
2439 | |
2440 return; | |
2441 } | |
2442 | |
2443 //------------------------------peep_match_child_parse------------------------- | |
2444 InstructForm *ADLParser::peep_match_child_parse(PeepMatch &match, int parent, int &position, int input){ | |
2445 char *token = NULL; | |
2446 int lparen = 0; // keep track of parenthesis nesting depth | |
2447 int rparen = 0; // position of instruction at this depth | |
2448 InstructForm *inst_seen = NULL; | |
2449 InstructForm *child_seen = NULL; | |
2450 | |
2451 // Walk the match tree, | |
2452 // Record <parent, position, instruction name, input position> | |
2453 while ( lparen >= rparen ) { | |
2454 skipws(); | |
2455 // Left paren signals start of an input, collect with recursive call | |
2456 if (_curchar == '(') { | |
2457 ++lparen; | |
2458 next_char(); | |
2459 child_seen = peep_match_child_parse(match, parent, position, rparen); | |
2460 } | |
2461 // Right paren signals end of an input, may be more | |
2462 else if (_curchar == ')') { | |
2463 ++rparen; | |
2464 if( rparen == lparen ) { // IF rparen matches an lparen I've seen | |
2465 next_char(); // move past ')' | |
2466 } else { // ELSE leave ')' for parent | |
2467 assert( rparen == lparen + 1, "Should only see one extra ')'"); | |
2468 // if an instruction was not specified for this paren-pair | |
2469 if( ! inst_seen ) { // record signal entry | |
2470 match.add_instruction( parent, position, NameList::_signal, input ); | |
2471 ++position; | |
2472 } | |
2473 // ++input; // TEMPORARY | |
2474 return inst_seen; | |
2475 } | |
2476 } | |
2477 // if no parens, then check for instruction name | |
2478 // This instruction is the parent of a sub-tree | |
2479 else if ((token = get_ident_dup()) != NULL) { | |
2480 const Form *form = _AD._globalNames[token]; | |
2481 if (form) { | |
2482 InstructForm *inst = form->is_instruction(); | |
2483 // Record the first instruction at this level | |
2484 if( inst_seen == NULL ) { | |
2485 inst_seen = inst; | |
2486 } | |
2487 if (inst) { | |
2488 match.add_instruction( parent, position, token, input ); | |
2489 parent = position; | |
2490 ++position; | |
2491 } else { | |
2492 parse_err(SYNERR, "instruction name expected at identifier %s.\n", | |
2493 token); | |
2494 return inst_seen; | |
2495 } | |
2496 } | |
2497 else { | |
2498 parse_err(SYNERR, "missing identifier in peepmatch rule.\n"); | |
2499 return NULL; | |
2500 } | |
2501 } | |
2502 else { | |
2503 parse_err(SYNERR, "missing identifier in peepmatch rule.\n"); | |
2504 return NULL; | |
2505 } | |
2506 | |
2507 } // end while | |
2508 | |
2509 assert( false, "ShouldNotReachHere();"); | |
2510 return NULL; | |
2511 } | |
2512 | |
2513 //------------------------------peep_match_parse------------------------------- | |
2514 // Syntax for a peepmatch rule | |
2515 // | |
2516 // peepmatch ( root_instr_name [(instruction subtree)] [,(instruction subtree)]* ); | |
2517 // | |
2518 void ADLParser::peep_match_parse(Peephole &peep) { | |
2519 | |
2520 skipws(); | |
2521 // Check the structure of the rule | |
2522 // Check for open paren | |
2523 if (_curchar != '(') { | |
2524 parse_err(SYNERR, "missing '(' at start of peepmatch rule.\n"); | |
2525 return; | |
2526 } | |
2527 next_char(); // skip '(' | |
2528 | |
2529 // Construct PeepMatch and parse the peepmatch rule. | |
2530 PeepMatch *match = new PeepMatch(_ptr); | |
2531 int parent = -1; // parent of root | |
2532 int position = 0; // zero-based positions | |
2533 int input = 0; // input position in parent's operands | |
2534 InstructForm *root= peep_match_child_parse( *match, parent, position, input); | |
2535 if( root == NULL ) { | |
2536 parse_err(SYNERR, "missing instruction-name at start of peepmatch.\n"); | |
2537 return; | |
2538 } | |
2539 | |
2540 if( _curchar != ')' ) { | |
2541 parse_err(SYNERR, "missing ')' at end of peepmatch.\n"); | |
2542 return; | |
2543 } | |
2544 next_char(); // skip ')' | |
2545 | |
2546 // Check for closing semicolon | |
2547 skipws(); | |
2548 if( _curchar != ';' ) { | |
2549 parse_err(SYNERR, "missing ';' at end of peepmatch.\n"); | |
2550 return; | |
2551 } | |
2552 next_char(); // skip ';' | |
2553 | |
2554 // Store match into peep, and store peep into instruction | |
2555 peep.add_match(match); | |
2556 root->append_peephole(&peep); | |
2557 } | |
2558 | |
2559 //------------------------------peep_constraint_parse-------------------------- | |
2560 // Syntax for a peepconstraint rule | |
2561 // A parenthesized list of relations between operands in peepmatch subtree | |
2562 // | |
2563 // peepconstraint %{ | |
2564 // (instruction_number.operand_name | |
2565 // relational_op | |
2566 // instruction_number.operand_name OR register_name | |
2567 // [, ...] ); | |
2568 // | |
2569 // // instruction numbers are zero-based using topological order in peepmatch | |
2570 // | |
2571 void ADLParser::peep_constraint_parse(Peephole &peep) { | |
2572 | |
2573 skipws(); | |
2574 // Check the structure of the rule | |
2575 // Check for open paren | |
2576 if (_curchar != '(') { | |
2577 parse_err(SYNERR, "missing '(' at start of peepconstraint rule.\n"); | |
2578 return; | |
2579 } | |
2580 else { | |
2581 next_char(); // Skip '(' | |
2582 } | |
2583 | |
2584 // Check for a constraint | |
2585 skipws(); | |
2586 while( _curchar != ')' ) { | |
2587 // Get information on the left instruction and its operand | |
2588 // left-instructions's number | |
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2589 int left_inst = get_int(); |
0 | 2590 // Left-instruction's operand |
2591 skipws(); | |
2592 if( _curchar != '.' ) { | |
2593 parse_err(SYNERR, "missing '.' in peepconstraint after instruction number.\n"); | |
2594 return; | |
2595 } | |
2596 next_char(); // Skip '.' | |
2597 char *left_op = get_ident_dup(); | |
2598 | |
2599 skipws(); | |
2600 // Collect relational operator | |
2601 char *relation = get_relation_dup(); | |
2602 | |
2603 skipws(); | |
2604 // Get information on the right instruction and its operand | |
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2605 int right_inst; // Right-instructions's number |
0 | 2606 if( isdigit(_curchar) ) { |
2607 right_inst = get_int(); | |
2608 // Right-instruction's operand | |
2609 skipws(); | |
2610 if( _curchar != '.' ) { | |
2611 parse_err(SYNERR, "missing '.' in peepconstraint after instruction number.\n"); | |
2612 return; | |
2613 } | |
2614 next_char(); // Skip '.' | |
2615 } else { | |
2616 right_inst = -1; // Flag as being a register constraint | |
2617 } | |
2618 | |
2619 char *right_op = get_ident_dup(); | |
2620 | |
2621 // Construct the next PeepConstraint | |
2622 PeepConstraint *constraint = new PeepConstraint( left_inst, left_op, | |
2623 relation, | |
2624 right_inst, right_op ); | |
2625 // And append it to the list for this peephole rule | |
2626 peep.append_constraint( constraint ); | |
2627 | |
2628 // Check for another constraint, or end of rule | |
2629 skipws(); | |
2630 if( _curchar == ',' ) { | |
2631 next_char(); // Skip ',' | |
2632 skipws(); | |
2633 } | |
2634 else if( _curchar != ')' ) { | |
2635 parse_err(SYNERR, "expected ',' or ')' after peephole constraint.\n"); | |
2636 return; | |
2637 } | |
2638 } // end while( processing constraints ) | |
2639 next_char(); // Skip ')' | |
2640 | |
2641 // Check for terminating ';' | |
2642 skipws(); | |
2643 if (_curchar != ';') { | |
2644 parse_err(SYNERR, "missing ';' at end of peepconstraint.\n"); | |
2645 return; | |
2646 } | |
2647 next_char(); // Skip trailing ';' | |
2648 } | |
2649 | |
2650 | |
2651 //------------------------------peep_replace_parse----------------------------- | |
2652 // Syntax for a peepreplace rule | |
2653 // root instruction name followed by a | |
2654 // parenthesized list of whitespace separated instruction.operand specifiers | |
2655 // | |
2656 // peepreplace ( instr_name ( [instruction_number.operand_name]* ) ); | |
2657 // | |
2658 // | |
2659 void ADLParser::peep_replace_parse(Peephole &peep) { | |
2660 int lparen = 0; // keep track of parenthesis nesting depth | |
2661 int rparen = 0; // keep track of parenthesis nesting depth | |
2662 int icount = 0; // count of instructions in rule for naming | |
2663 char *str = NULL; | |
2664 char *token = NULL; | |
2665 | |
2666 skipws(); | |
2667 // Check for open paren | |
2668 if (_curchar != '(') { | |
2669 parse_err(SYNERR, "missing '(' at start of peepreplace rule.\n"); | |
2670 return; | |
2671 } | |
2672 else { | |
2673 lparen++; | |
2674 next_char(); | |
2675 } | |
2676 | |
2677 // Check for root instruction | |
2678 char *inst = get_ident_dup(); | |
2679 const Form *form = _AD._globalNames[inst]; | |
2680 if( form == NULL || form->is_instruction() == NULL ) { | |
2681 parse_err(SYNERR, "Instruction name expected at start of peepreplace.\n"); | |
2682 return; | |
2683 } | |
2684 | |
2685 // Store string representation of rule into replace | |
2686 PeepReplace *replace = new PeepReplace(str); | |
2687 replace->add_instruction( inst ); | |
2688 | |
2689 skipws(); | |
2690 // Start of root's operand-list | |
2691 if (_curchar != '(') { | |
2692 parse_err(SYNERR, "missing '(' at peepreplace root's operand-list.\n"); | |
2693 return; | |
2694 } | |
2695 else { | |
2696 lparen++; | |
2697 next_char(); | |
2698 } | |
2699 | |
2700 skipws(); | |
2701 // Get the list of operands | |
2702 while( _curchar != ')' ) { | |
2703 // Get information on an instruction and its operand | |
2704 // instructions's number | |
2705 int inst_num = get_int(); | |
2706 // Left-instruction's operand | |
2707 skipws(); | |
2708 if( _curchar != '.' ) { | |
2709 parse_err(SYNERR, "missing '.' in peepreplace after instruction number.\n"); | |
2710 return; | |
2711 } | |
2712 next_char(); // Skip '.' | |
2713 char *inst_op = get_ident_dup(); | |
2714 if( inst_op == NULL ) { | |
2715 parse_err(SYNERR, "missing operand identifier in peepreplace.\n"); | |
2716 return; | |
2717 } | |
2718 | |
2719 // Record this operand's position in peepmatch | |
2720 replace->add_operand( inst_num, inst_op ); | |
2721 skipws(); | |
2722 } | |
2723 | |
2724 // Check for the end of operands list | |
2725 skipws(); | |
2726 assert( _curchar == ')', "While loop should have advanced to ')'."); | |
2727 next_char(); // Skip ')' | |
2728 | |
2729 skipws(); | |
2730 // Check for end of peepreplace | |
2731 if( _curchar != ')' ) { | |
2732 parse_err(SYNERR, "missing ')' at end of peepmatch.\n"); | |
2733 parse_err(SYNERR, "Support one replacement instruction.\n"); | |
2734 return; | |
2735 } | |
2736 next_char(); // Skip ')' | |
2737 | |
2738 // Check for closing semicolon | |
2739 skipws(); | |
2740 if( _curchar != ';' ) { | |
2741 parse_err(SYNERR, "missing ';' at end of peepreplace.\n"); | |
2742 return; | |
2743 } | |
2744 next_char(); // skip ';' | |
2745 | |
2746 // Store replace into peep | |
2747 peep.add_replace( replace ); | |
2748 } | |
2749 | |
2750 //------------------------------pred_parse------------------------------------- | |
2751 Predicate *ADLParser::pred_parse(void) { | |
2752 Predicate *predicate; // Predicate class for operand | |
2753 char *rule = NULL; // String representation of predicate | |
2754 | |
2755 skipws(); // Skip leading whitespace | |
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2756 int line = linenum(); |
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2757 if ( (rule = get_paren_expr("pred expression", true)) == NULL ) { |
0 | 2758 parse_err(SYNERR, "incorrect or missing expression for 'predicate'\n"); |
2759 return NULL; | |
2760 } | |
2761 // Debug Stuff | |
2762 if (_AD._adl_debug > 1) fprintf(stderr,"Predicate: %s\n", rule); | |
2763 if (_curchar != ';') { | |
2764 parse_err(SYNERR, "missing ';' in predicate definition\n"); | |
2765 return NULL; | |
2766 } | |
2767 next_char(); // Point after the terminator | |
2768 | |
2769 predicate = new Predicate(rule); // Build new predicate object | |
2770 skipws(); | |
2771 return predicate; | |
2772 } | |
2773 | |
2774 | |
2775 //------------------------------ins_encode_parse_block------------------------- | |
2776 // Parse the block form of ins_encode. See ins_encode_parse for more details | |
2008 | 2777 void ADLParser::ins_encode_parse_block(InstructForm& inst) { |
0 | 2778 // Create a new encoding name based on the name of the instruction |
2779 // definition, which should be unique. | |
2008 | 2780 const char* prefix = "__ins_encode_"; |
2781 char* ec_name = (char*) malloc(strlen(inst._ident) + strlen(prefix) + 1); | |
0 | 2782 sprintf(ec_name, "%s%s", prefix, inst._ident); |
2783 | |
2784 assert(_AD._encode->encClass(ec_name) == NULL, "shouldn't already exist"); | |
2008 | 2785 EncClass* encoding = _AD._encode->add_EncClass(ec_name); |
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2786 encoding->_linenum = linenum(); |
0 | 2787 |
2788 // synthesize the arguments list for the enc_class from the | |
2789 // arguments to the instruct definition. | |
2008 | 2790 const char* param = NULL; |
0 | 2791 inst._parameters.reset(); |
2792 while ((param = inst._parameters.iter()) != NULL) { | |
2008 | 2793 OperandForm* opForm = (OperandForm*) inst._localNames[param]; |
0 | 2794 encoding->add_parameter(opForm->_ident, param); |
2795 } | |
2796 | |
2008 | 2797 // Define a MacroAssembler instance for use by the encoding. The |
2798 // name is chosen to match the __ idiom used for assembly in other | |
2799 // parts of hotspot and assumes the existence of the standard | |
2800 // #define __ _masm. | |
2801 encoding->add_code(" MacroAssembler _masm(&cbuf);\n"); | |
0 | 2802 |
2803 // Parse the following %{ }% block | |
2008 | 2804 ins_encode_parse_block_impl(inst, encoding, ec_name); |
0 | 2805 |
2806 // Build an encoding rule which invokes the encoding rule we just | |
2807 // created, passing all arguments that we received. | |
2008 | 2808 InsEncode* encrule = new InsEncode(); // Encode class for instruction |
2809 NameAndList* params = encrule->add_encode(ec_name); | |
0 | 2810 inst._parameters.reset(); |
2811 while ((param = inst._parameters.iter()) != NULL) { | |
2812 params->add_entry(param); | |
2813 } | |
2814 | |
2008 | 2815 // Set encode class of this instruction. |
2816 inst._insencode = encrule; | |
2817 } | |
2818 | |
2819 | |
2820 void ADLParser::ins_encode_parse_block_impl(InstructForm& inst, EncClass* encoding, char* ec_name) { | |
2821 skipws_no_preproc(); // Skip leading whitespace | |
2822 // Prepend location descriptor, for debugging; cf. ADLParser::find_cpp_block | |
2823 if (_AD._adlocation_debug) { | |
2824 encoding->add_code(get_line_string()); | |
2825 } | |
2826 | |
2827 // Collect the parts of the encode description | |
2828 // (1) strings that are passed through to output | |
2829 // (2) replacement/substitution variable, preceeded by a '$' | |
2830 while ((_curchar != '%') && (*(_ptr+1) != '}')) { | |
2831 | |
2832 // (1) | |
2833 // Check if there is a string to pass through to output | |
2834 char *start = _ptr; // Record start of the next string | |
2835 while ((_curchar != '$') && ((_curchar != '%') || (*(_ptr+1) != '}')) ) { | |
2836 // If at the start of a comment, skip past it | |
2837 if( (_curchar == '/') && ((*(_ptr+1) == '/') || (*(_ptr+1) == '*')) ) { | |
2838 skipws_no_preproc(); | |
2839 } else { | |
2840 // ELSE advance to the next character, or start of the next line | |
2841 next_char_or_line(); | |
2842 } | |
2843 } | |
2844 // If a string was found, terminate it and record in EncClass | |
2845 if (start != _ptr) { | |
2846 *_ptr = '\0'; // Terminate the string | |
2847 encoding->add_code(start); | |
2848 } | |
2849 | |
2850 // (2) | |
2851 // If we are at a replacement variable, | |
2852 // copy it and record in EncClass | |
2853 if (_curchar == '$') { | |
2854 // Found replacement Variable | |
2855 char* rep_var = get_rep_var_ident_dup(); | |
2856 | |
2857 // Add flag to _strings list indicating we should check _rep_vars | |
2858 encoding->add_rep_var(rep_var); | |
2859 | |
2860 skipws(); | |
2861 | |
2862 // Check if this instruct is a MachConstantNode. | |
2863 if (strcmp(rep_var, "constanttablebase") == 0) { | |
2864 // This instruct is a MachConstantNode. | |
2865 inst.set_is_mach_constant(true); | |
2866 | |
2867 if (_curchar == '(') { | |
2868 parse_err(SYNERR, "constanttablebase in instruct %s cannot have an argument (only constantaddress and constantoffset)", ec_name); | |
2869 return; | |
2870 } | |
2871 } | |
2872 else if ((strcmp(rep_var, "constantaddress") == 0) || | |
2873 (strcmp(rep_var, "constantoffset") == 0)) { | |
2874 // This instruct is a MachConstantNode. | |
2875 inst.set_is_mach_constant(true); | |
2876 | |
2877 // If the constant keyword has an argument, parse it. | |
2878 if (_curchar == '(') constant_parse(inst); | |
2879 } | |
2880 } | |
2881 } // end while part of format description | |
2882 next_char(); // Skip '%' | |
2883 next_char(); // Skip '}' | |
2884 | |
2885 skipws(); | |
2886 | |
2887 if (_AD._adlocation_debug) { | |
2888 encoding->add_code(end_line_marker()); | |
2889 } | |
2890 | |
2891 // Debug Stuff | |
2892 if (_AD._adl_debug > 1) fprintf(stderr, "EncodingClass Form: %s\n", ec_name); | |
0 | 2893 } |
2894 | |
2895 | |
2896 //------------------------------ins_encode_parse------------------------------- | |
2897 // Encode rules have the form | |
2898 // ins_encode( encode_class_name(parameter_list), ... ); | |
2899 // | |
2900 // The "encode_class_name" must be defined in the encode section | |
2901 // The parameter list contains $names that are locals. | |
2902 // | |
2903 // Alternatively it can be written like this: | |
2904 // | |
2905 // ins_encode %{ | |
2906 // ... // body | |
2907 // %} | |
2908 // | |
2909 // which synthesizes a new encoding class taking the same arguments as | |
2910 // the InstructForm, and automatically prefixes the definition with: | |
2911 // | |
2912 // MacroAssembler masm(&cbuf);\n"); | |
2913 // | |
2914 // making it more compact to take advantage of the MacroAssembler and | |
2915 // placing the assembly closer to it's use by instructions. | |
2008 | 2916 void ADLParser::ins_encode_parse(InstructForm& inst) { |
0 | 2917 |
2918 // Parse encode class name | |
2919 skipws(); // Skip whitespace | |
2920 if (_curchar != '(') { | |
2921 // Check for ins_encode %{ form | |
2922 if ((_curchar == '%') && (*(_ptr+1) == '{')) { | |
2923 next_char(); // Skip '%' | |
2924 next_char(); // Skip '{' | |
2925 | |
2926 // Parse the block form of ins_encode | |
2008 | 2927 ins_encode_parse_block(inst); |
2928 return; | |
0 | 2929 } |
2930 | |
2931 parse_err(SYNERR, "missing '%%{' or '(' in ins_encode definition\n"); | |
2008 | 2932 return; |
0 | 2933 } |
2934 next_char(); // move past '(' | |
2935 skipws(); | |
2936 | |
2937 InsEncode *encrule = new InsEncode(); // Encode class for instruction | |
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2938 encrule->_linenum = linenum(); |
0 | 2939 char *ec_name = NULL; // String representation of encode rule |
2940 // identifier is optional. | |
2941 while (_curchar != ')') { | |
2942 ec_name = get_ident(); | |
2943 if (ec_name == NULL) { | |
2944 parse_err(SYNERR, "Invalid encode class name after 'ins_encode('.\n"); | |
2008 | 2945 return; |
0 | 2946 } |
2947 // Check that encoding is defined in the encode section | |
2948 EncClass *encode_class = _AD._encode->encClass(ec_name); | |
2949 if (encode_class == NULL) { | |
2950 // Like to defer checking these till later... | |
2951 // parse_err(WARN, "Using an undefined encode class '%s' in 'ins_encode'.\n", ec_name); | |
2952 } | |
2953 | |
2954 // Get list for encode method's parameters | |
2955 NameAndList *params = encrule->add_encode(ec_name); | |
2956 | |
2957 // Parse the parameters to this encode method. | |
2958 skipws(); | |
2959 if ( _curchar == '(' ) { | |
2960 next_char(); // move past '(' for parameters | |
2961 | |
2962 // Parse the encode method's parameters | |
2963 while (_curchar != ')') { | |
2964 char *param = get_ident_or_literal_constant("encoding operand"); | |
2965 if ( param != NULL ) { | |
2966 // Found a parameter: | |
2967 // Check it is a local name, add it to the list, then check for more | |
2968 // New: allow hex constants as parameters to an encode method. | |
2969 // New: allow parenthesized expressions as parameters. | |
2970 // New: allow "primary", "secondary", "tertiary" as parameters. | |
2971 // New: allow user-defined register name as parameter | |
2972 if ( (inst._localNames[param] == NULL) && | |
2973 !ADLParser::is_literal_constant(param) && | |
2974 (Opcode::as_opcode_type(param) == Opcode::NOT_AN_OPCODE) && | |
2975 ((_AD._register == NULL ) || (_AD._register->getRegDef(param) == NULL)) ) { | |
2976 parse_err(SYNERR, "Using non-locally defined parameter %s for encoding %s.\n", param, ec_name); | |
2008 | 2977 return; |
0 | 2978 } |
2979 params->add_entry(param); | |
2980 | |
2981 skipws(); | |
2982 if (_curchar == ',' ) { | |
2983 // More parameters to come | |
2984 next_char(); // move past ',' between parameters | |
2985 skipws(); // Skip to next parameter | |
2986 } | |
2987 else if (_curchar == ')') { | |
2988 // Done with parameter list | |
2989 } | |
2990 else { | |
2991 // Only ',' or ')' are valid after a parameter name | |
2992 parse_err(SYNERR, "expected ',' or ')' after parameter %s.\n", | |
2993 ec_name); | |
2008 | 2994 return; |
0 | 2995 } |
2996 | |
2997 } else { | |
2998 skipws(); | |
2999 // Did not find a parameter | |
3000 if (_curchar == ',') { | |
3001 parse_err(SYNERR, "Expected encode parameter before ',' in encoding %s.\n", ec_name); | |
2008 | 3002 return; |
0 | 3003 } |
3004 if (_curchar != ')') { | |
3005 parse_err(SYNERR, "Expected ')' after encode parameters.\n"); | |
2008 | 3006 return; |
0 | 3007 } |
3008 } | |
3009 } // WHILE loop collecting parameters | |
3010 next_char(); // move past ')' at end of parameters | |
3011 } // done with parameter list for encoding | |
3012 | |
3013 // Check for ',' or ')' after encoding | |
3014 skipws(); // move to character after parameters | |
3015 if ( _curchar == ',' ) { | |
3016 // Found a ',' | |
3017 next_char(); // move past ',' between encode methods | |
3018 skipws(); | |
3019 } | |
3020 else if ( _curchar != ')' ) { | |
3021 // If not a ',' then only a ')' is allowed | |
3022 parse_err(SYNERR, "Expected ')' after encoding %s.\n", ec_name); | |
2008 | 3023 return; |
0 | 3024 } |
3025 | |
3026 // Check for ',' separating parameters | |
3027 // if ( _curchar != ',' && _curchar != ')' ) { | |
3028 // parse_err(SYNERR, "expected ',' or ')' after encode method inside ins_encode.\n"); | |
3029 // return NULL; | |
3030 // } | |
3031 | |
3032 } // done parsing ins_encode methods and their parameters | |
3033 if (_curchar != ')') { | |
3034 parse_err(SYNERR, "Missing ')' at end of ins_encode description.\n"); | |
2008 | 3035 return; |
0 | 3036 } |
3037 next_char(); // move past ')' | |
3038 skipws(); // Skip leading whitespace | |
3039 | |
3040 if ( _curchar != ';' ) { | |
3041 parse_err(SYNERR, "Missing ';' at end of ins_encode.\n"); | |
2008 | 3042 return; |
0 | 3043 } |
3044 next_char(); // move past ';' | |
3045 skipws(); // be friendly to oper_parse() | |
3046 | |
3047 // Debug Stuff | |
3048 if (_AD._adl_debug > 1) fprintf(stderr,"Instruction Encode: %s\n", ec_name); | |
3049 | |
2008 | 3050 // Set encode class of this instruction. |
3051 inst._insencode = encrule; | |
3052 } | |
3053 | |
3054 | |
3055 //------------------------------constant_parse--------------------------------- | |
3056 // Parse a constant expression. | |
3057 void ADLParser::constant_parse(InstructForm& inst) { | |
3058 // Create a new encoding name based on the name of the instruction | |
3059 // definition, which should be unique. | |
3060 const char* prefix = "__constant_"; | |
3061 char* ec_name = (char*) malloc(strlen(inst._ident) + strlen(prefix) + 1); | |
3062 sprintf(ec_name, "%s%s", prefix, inst._ident); | |
3063 | |
3064 assert(_AD._encode->encClass(ec_name) == NULL, "shouldn't already exist"); | |
3065 EncClass* encoding = _AD._encode->add_EncClass(ec_name); | |
3066 encoding->_linenum = linenum(); | |
3067 | |
3068 // synthesize the arguments list for the enc_class from the | |
3069 // arguments to the instruct definition. | |
3070 const char* param = NULL; | |
3071 inst._parameters.reset(); | |
3072 while ((param = inst._parameters.iter()) != NULL) { | |
3073 OperandForm* opForm = (OperandForm*) inst._localNames[param]; | |
3074 encoding->add_parameter(opForm->_ident, param); | |
3075 } | |
3076 | |
3077 // Parse the following ( ) expression. | |
3078 constant_parse_expression(encoding, ec_name); | |
3079 | |
3080 // Build an encoding rule which invokes the encoding rule we just | |
3081 // created, passing all arguments that we received. | |
3082 InsEncode* encrule = new InsEncode(); // Encode class for instruction | |
3083 NameAndList* params = encrule->add_encode(ec_name); | |
3084 inst._parameters.reset(); | |
3085 while ((param = inst._parameters.iter()) != NULL) { | |
3086 params->add_entry(param); | |
3087 } | |
3088 | |
3089 // Set encode class of this instruction. | |
3090 inst._constant = encrule; | |
3091 } | |
3092 | |
3093 | |
3094 //------------------------------constant_parse_expression---------------------- | |
3095 void ADLParser::constant_parse_expression(EncClass* encoding, char* ec_name) { | |
3096 skipws(); | |
3097 | |
3098 // Prepend location descriptor, for debugging; cf. ADLParser::find_cpp_block | |
3099 if (_AD._adlocation_debug) { | |
3100 encoding->add_code(get_line_string()); | |
3101 } | |
3102 | |
3103 // Start code line. | |
3104 encoding->add_code(" _constant = C->constant_table().add"); | |
3105 | |
3106 // Parse everything in ( ) expression. | |
3107 encoding->add_code("("); | |
3108 next_char(); // Skip '(' | |
3109 int parens_depth = 1; | |
3110 | |
3111 // Collect the parts of the constant expression. | |
3112 // (1) strings that are passed through to output | |
3113 // (2) replacement/substitution variable, preceeded by a '$' | |
3114 while (parens_depth > 0) { | |
3115 if (_curchar == '(') { | |
3116 parens_depth++; | |
3117 encoding->add_code("("); | |
3118 next_char(); | |
3119 } | |
3120 else if (_curchar == ')') { | |
3121 parens_depth--; | |
3122 encoding->add_code(")"); | |
3123 next_char(); | |
3124 } | |
3125 else { | |
3126 // (1) | |
3127 // Check if there is a string to pass through to output | |
3128 char *start = _ptr; // Record start of the next string | |
3129 while ((_curchar != '$') && (_curchar != '(') && (_curchar != ')')) { | |
3130 next_char(); | |
3131 } | |
3132 // If a string was found, terminate it and record in EncClass | |
3133 if (start != _ptr) { | |
3134 *_ptr = '\0'; // Terminate the string | |
3135 encoding->add_code(start); | |
3136 } | |
3137 | |
3138 // (2) | |
3139 // If we are at a replacement variable, copy it and record in EncClass. | |
3140 if (_curchar == '$') { | |
3141 // Found replacement Variable | |
3142 char* rep_var = get_rep_var_ident_dup(); | |
3143 encoding->add_rep_var(rep_var); | |
3144 } | |
3145 } | |
3146 } | |
3147 | |
3148 // Finish code line. | |
3149 encoding->add_code(";"); | |
3150 | |
3151 if (_AD._adlocation_debug) { | |
3152 encoding->add_code(end_line_marker()); | |
3153 } | |
3154 | |
3155 // Debug Stuff | |
3156 if (_AD._adl_debug > 1) fprintf(stderr, "EncodingClass Form: %s\n", ec_name); | |
0 | 3157 } |
3158 | |
3159 | |
3160 //------------------------------size_parse----------------------------------- | |
3161 char* ADLParser::size_parse(InstructForm *instr) { | |
3162 char* sizeOfInstr = NULL; | |
3163 | |
3164 // Get value of the instruction's size | |
3165 skipws(); | |
3166 | |
3167 // Parse size | |
3168 sizeOfInstr = get_paren_expr("size expression"); | |
3169 if (sizeOfInstr == NULL) { | |
3170 parse_err(SYNERR, "size of opcode expected at %c\n", _curchar); | |
3171 return NULL; | |
3172 } | |
3173 | |
3174 skipws(); | |
3175 | |
3176 // Check for terminator | |
3177 if (_curchar != ';') { | |
3178 parse_err(SYNERR, "missing ';' in ins_attrib definition\n"); | |
3179 return NULL; | |
3180 } | |
3181 next_char(); // Advance past the ';' | |
3182 skipws(); // necessary for instr_parse() | |
3183 | |
3184 // Debug Stuff | |
3185 if (_AD._adl_debug > 1) { | |
3186 if (sizeOfInstr != NULL) { | |
3187 fprintf(stderr,"size of opcode: %s\n", sizeOfInstr); | |
3188 } | |
3189 } | |
3190 | |
3191 return sizeOfInstr; | |
3192 } | |
3193 | |
3194 | |
3195 //------------------------------opcode_parse----------------------------------- | |
3196 Opcode * ADLParser::opcode_parse(InstructForm *instr) { | |
3197 char *primary = NULL; | |
3198 char *secondary = NULL; | |
3199 char *tertiary = NULL; | |
3200 | |
3201 char *val = NULL; | |
3202 Opcode *opcode = NULL; | |
3203 | |
3204 // Get value of the instruction's opcode | |
3205 skipws(); | |
3206 if (_curchar != '(') { // Check for parenthesized operand list | |
3207 parse_err(SYNERR, "missing '(' in expand instruction declaration\n"); | |
3208 return NULL; | |
3209 } | |
3210 next_char(); // skip open paren | |
3211 skipws(); | |
3212 if (_curchar != ')') { | |
3213 // Parse primary, secondary, and tertiary opcodes, if provided. | |
3214 if ( ((primary = get_ident_or_literal_constant("primary opcode")) == NULL) ) { | |
3215 parse_err(SYNERR, "primary hex opcode expected at %c\n", _curchar); | |
3216 return NULL; | |
3217 } | |
3218 skipws(); | |
3219 if (_curchar == ',') { | |
3220 next_char(); | |
3221 skipws(); | |
3222 // Parse secondary opcode | |
3223 if ( ((secondary = get_ident_or_literal_constant("secondary opcode")) == NULL) ) { | |
3224 parse_err(SYNERR, "secondary hex opcode expected at %c\n", _curchar); | |
3225 return NULL; | |
3226 } | |
3227 skipws(); | |
3228 if (_curchar == ',') { | |
3229 next_char(); | |
3230 skipws(); | |
3231 // Parse tertiary opcode | |
3232 if ( ((tertiary = get_ident_or_literal_constant("tertiary opcode")) == NULL) ) { | |
3233 parse_err(SYNERR,"tertiary hex opcode expected at %c\n", _curchar); | |
3234 return NULL; | |
3235 } | |
3236 skipws(); | |
3237 } | |
3238 } | |
3239 skipws(); | |
3240 if (_curchar != ')') { | |
3241 parse_err(SYNERR, "Missing ')' in opcode description\n"); | |
3242 return NULL; | |
3243 } | |
3244 } | |
3245 next_char(); // Skip ')' | |
3246 skipws(); | |
3247 // Check for terminator | |
3248 if (_curchar != ';') { | |
3249 parse_err(SYNERR, "missing ';' in ins_attrib definition\n"); | |
3250 return NULL; | |
3251 } | |
3252 next_char(); // Advance past the ';' | |
3253 skipws(); // necessary for instr_parse() | |
3254 | |
3255 // Debug Stuff | |
3256 if (_AD._adl_debug > 1) { | |
3257 if (primary != NULL) fprintf(stderr,"primary opcode: %s\n", primary); | |
3258 if (secondary != NULL) fprintf(stderr,"secondary opcode: %s\n", secondary); | |
3259 if (tertiary != NULL) fprintf(stderr,"tertiary opcode: %s\n", tertiary); | |
3260 } | |
3261 | |
3262 // Generate new object and return | |
3263 opcode = new Opcode(primary, secondary, tertiary); | |
3264 return opcode; | |
3265 } | |
3266 | |
3267 | |
3268 //------------------------------interface_parse-------------------------------- | |
3269 Interface *ADLParser::interface_parse(void) { | |
3270 char *iface_name = NULL; // Name of interface class being used | |
3271 char *iface_code = NULL; // Describe components of this class | |
3272 | |
3273 // Get interface class name | |
3274 skipws(); // Skip whitespace | |
3275 if (_curchar != '(') { | |
3276 parse_err(SYNERR, "Missing '(' at start of interface description.\n"); | |
3277 return NULL; | |
3278 } | |
3279 next_char(); // move past '(' | |
3280 skipws(); | |
3281 iface_name = get_ident(); | |
3282 if (iface_name == NULL) { | |
3283 parse_err(SYNERR, "missing interface name after 'interface'.\n"); | |
3284 return NULL; | |
3285 } | |
3286 skipws(); | |
3287 if (_curchar != ')') { | |
3288 parse_err(SYNERR, "Missing ')' after name of interface.\n"); | |
3289 return NULL; | |
3290 } | |
3291 next_char(); // move past ')' | |
3292 | |
3293 // Get details of the interface, | |
3294 // for the type of interface indicated by iface_name. | |
3295 Interface *inter = NULL; | |
3296 skipws(); | |
3297 if ( _curchar != ';' ) { | |
3298 if ( strcmp(iface_name,"MEMORY_INTER") == 0 ) { | |
3299 inter = mem_interface_parse(); | |
3300 } | |
3301 else if ( strcmp(iface_name,"COND_INTER") == 0 ) { | |
3302 inter = cond_interface_parse(); | |
3303 } | |
3304 // The parse routines consume the "%}" | |
3305 | |
3306 // Check for probable extra ';' after defining block. | |
3307 if ( _curchar == ';' ) { | |
3308 parse_err(SYNERR, "Extra ';' after defining interface block.\n"); | |
3309 next_char(); // Skip ';' | |
3310 return NULL; | |
3311 } | |
3312 } else { | |
3313 next_char(); // move past ';' | |
3314 | |
3315 // Create appropriate interface object | |
3316 if ( strcmp(iface_name,"REG_INTER") == 0 ) { | |
3317 inter = new RegInterface(); | |
3318 } | |
3319 else if ( strcmp(iface_name,"CONST_INTER") == 0 ) { | |
3320 inter = new ConstInterface(); | |
3321 } | |
3322 } | |
3323 skipws(); // be friendly to oper_parse() | |
3324 // Debug Stuff | |
3325 if (_AD._adl_debug > 1) fprintf(stderr,"Interface Form: %s\n", iface_name); | |
3326 | |
3327 // Create appropriate interface object and return. | |
3328 return inter; | |
3329 } | |
3330 | |
3331 | |
3332 //------------------------------mem_interface_parse---------------------------- | |
3333 Interface *ADLParser::mem_interface_parse(void) { | |
3334 // Fields for MemInterface | |
3335 char *base = NULL; | |
3336 char *index = NULL; | |
3337 char *scale = NULL; | |
3338 char *disp = NULL; | |
3339 | |
3340 if (_curchar != '%') { | |
3341 parse_err(SYNERR, "Missing '%{' for 'interface' block.\n"); | |
3342 return NULL; | |
3343 } | |
3344 next_char(); // Skip '%' | |
3345 if (_curchar != '{') { | |
3346 parse_err(SYNERR, "Missing '%{' for 'interface' block.\n"); | |
3347 return NULL; | |
3348 } | |
3349 next_char(); // Skip '{' | |
3350 skipws(); | |
3351 do { | |
3352 char *field = get_ident(); | |
3353 if (field == NULL) { | |
3354 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%}' ending interface.\n"); | |
3355 return NULL; | |
3356 } | |
3357 if ( strcmp(field,"base") == 0 ) { | |
3358 base = interface_field_parse(); | |
3359 } | |
3360 else if ( strcmp(field,"index") == 0 ) { | |
3361 index = interface_field_parse(); | |
3362 } | |
3363 else if ( strcmp(field,"scale") == 0 ) { | |
3364 scale = interface_field_parse(); | |
3365 } | |
3366 else if ( strcmp(field,"disp") == 0 ) { | |
3367 disp = interface_field_parse(); | |
3368 } | |
3369 else { | |
3370 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%}' ending interface.\n"); | |
3371 return NULL; | |
3372 } | |
3373 } while( _curchar != '%' ); | |
3374 next_char(); // Skip '%' | |
3375 if ( _curchar != '}' ) { | |
3376 parse_err(SYNERR, "Missing '%}' for 'interface' block.\n"); | |
3377 return NULL; | |
3378 } | |
3379 next_char(); // Skip '}' | |
3380 | |
3381 // Construct desired object and return | |
3382 Interface *inter = new MemInterface(base, index, scale, disp); | |
3383 return inter; | |
3384 } | |
3385 | |
3386 | |
3387 //------------------------------cond_interface_parse--------------------------- | |
3388 Interface *ADLParser::cond_interface_parse(void) { | |
3389 char *equal; | |
3390 char *not_equal; | |
3391 char *less; | |
3392 char *greater_equal; | |
3393 char *less_equal; | |
3394 char *greater; | |
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3395 const char *equal_format = "eq"; |
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3396 const char *not_equal_format = "ne"; |
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3397 const char *less_format = "lt"; |
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|
3398 const char *greater_equal_format = "ge"; |
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diff
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|
3399 const char *less_equal_format = "le"; |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3400 const char *greater_format = "gt"; |
0 | 3401 |
3402 if (_curchar != '%') { | |
3403 parse_err(SYNERR, "Missing '%{' for 'cond_interface' block.\n"); | |
3404 return NULL; | |
3405 } | |
3406 next_char(); // Skip '%' | |
3407 if (_curchar != '{') { | |
3408 parse_err(SYNERR, "Missing '%{' for 'cond_interface' block.\n"); | |
3409 return NULL; | |
3410 } | |
3411 next_char(); // Skip '{' | |
3412 skipws(); | |
3413 do { | |
3414 char *field = get_ident(); | |
3415 if (field == NULL) { | |
3416 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%}' ending interface.\n"); | |
3417 return NULL; | |
3418 } | |
3419 if ( strcmp(field,"equal") == 0 ) { | |
415
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|
3420 equal = interface_field_parse(&equal_format); |
0 | 3421 } |
3422 else if ( strcmp(field,"not_equal") == 0 ) { | |
415
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|
3423 not_equal = interface_field_parse(¬_equal_format); |
0 | 3424 } |
3425 else if ( strcmp(field,"less") == 0 ) { | |
415
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|
3426 less = interface_field_parse(&less_format); |
0 | 3427 } |
3428 else if ( strcmp(field,"greater_equal") == 0 ) { | |
415
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|
3429 greater_equal = interface_field_parse(&greater_equal_format); |
0 | 3430 } |
3431 else if ( strcmp(field,"less_equal") == 0 ) { | |
415
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|
3432 less_equal = interface_field_parse(&less_equal_format); |
0 | 3433 } |
3434 else if ( strcmp(field,"greater") == 0 ) { | |
415
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3435 greater = interface_field_parse(&greater_format); |
0 | 3436 } |
3437 else { | |
3438 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%}' ending interface.\n"); | |
3439 return NULL; | |
3440 } | |
3441 } while( _curchar != '%' ); | |
3442 next_char(); // Skip '%' | |
3443 if ( _curchar != '}' ) { | |
3444 parse_err(SYNERR, "Missing '%}' for 'interface' block.\n"); | |
3445 return NULL; | |
3446 } | |
3447 next_char(); // Skip '}' | |
3448 | |
3449 // Construct desired object and return | |
415
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|
3450 Interface *inter = new CondInterface(equal, equal_format, |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3451 not_equal, not_equal_format, |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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diff
changeset
|
3452 less, less_format, |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3453 greater_equal, greater_equal_format, |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3454 less_equal, less_equal_format, |
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6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3455 greater, greater_format); |
0 | 3456 return inter; |
3457 } | |
3458 | |
3459 | |
3460 //------------------------------interface_field_parse-------------------------- | |
415
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|
3461 char *ADLParser::interface_field_parse(const char ** format) { |
0 | 3462 char *iface_field = NULL; |
3463 | |
3464 // Get interface field | |
3465 skipws(); // Skip whitespace | |
3466 if (_curchar != '(') { | |
3467 parse_err(SYNERR, "Missing '(' at start of interface field.\n"); | |
3468 return NULL; | |
3469 } | |
3470 next_char(); // move past '(' | |
3471 skipws(); | |
3472 if ( _curchar != '0' && _curchar != '$' ) { | |
3473 parse_err(SYNERR, "missing or invalid interface field contents.\n"); | |
3474 return NULL; | |
3475 } | |
3476 iface_field = get_rep_var_ident(); | |
3477 if (iface_field == NULL) { | |
3478 parse_err(SYNERR, "missing or invalid interface field contents.\n"); | |
3479 return NULL; | |
3480 } | |
3481 skipws(); | |
415
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|
3482 if (format != NULL && _curchar == ',') { |
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|
3483 next_char(); |
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|
3484 skipws(); |
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|
3485 if (_curchar != '"') { |
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|
3486 parse_err(SYNERR, "Missing '\"' in field format .\n"); |
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parents:
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|
3487 return NULL; |
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diff
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|
3488 } |
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|
3489 next_char(); |
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|
3490 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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|
3491 while ((_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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|
3492 if (_curchar == '\\') next_char(); // superquote |
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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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|
3493 if (_curchar == '\n') parse_err(SYNERR, "newline in string"); // unimplemented! |
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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
|
3494 next_char(); |
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changeset
|
3495 } |
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0
diff
changeset
|
3496 if (_curchar != '"') { |
4d9884b01ba6
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diff
changeset
|
3497 parse_err(SYNERR, "Missing '\"' at end of field format .\n"); |
4d9884b01ba6
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parents:
0
diff
changeset
|
3498 return NULL; |
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0
diff
changeset
|
3499 } |
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0
diff
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|
3500 // If a string was found, terminate it and record in FormatRule |
4d9884b01ba6
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0
diff
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|
3501 if ( start != _ptr ) { |
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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|
3502 *_ptr = '\0'; // Terminate the string |
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0
diff
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|
3503 *format = start; |
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0
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changeset
|
3504 } |
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parents:
0
diff
changeset
|
3505 next_char(); |
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parents:
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diff
changeset
|
3506 skipws(); |
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|
3507 } |
0 | 3508 if (_curchar != ')') { |
3509 parse_err(SYNERR, "Missing ')' after interface field.\n"); | |
3510 return NULL; | |
3511 } | |
3512 next_char(); // move past ')' | |
3513 skipws(); | |
3514 if ( _curchar != ';' ) { | |
3515 parse_err(SYNERR, "Missing ';' at end of interface field.\n"); | |
3516 return NULL; | |
3517 } | |
3518 next_char(); // move past ';' | |
3519 skipws(); // be friendly to interface_parse() | |
3520 | |
3521 return iface_field; | |
3522 } | |
3523 | |
3524 | |
3525 //------------------------------match_parse------------------------------------ | |
3526 MatchRule *ADLParser::match_parse(FormDict &operands) { | |
3527 MatchRule *match; // Match Rule class for instruction/operand | |
3528 char *cnstr = NULL; // Code for constructor | |
3529 int depth = 0; // Counter for matching parentheses | |
3530 int numleaves = 0; // Counter for number of leaves in rule | |
3531 | |
3532 // Parse the match rule tree | |
3533 MatchNode *mnode = matchNode_parse(operands, depth, numleaves, true); | |
3534 | |
3535 // Either there is a block with a constructor, or a ';' here | |
3536 skipws(); // Skip whitespace | |
3537 if ( _curchar == ';' ) { // Semicolon is valid terminator | |
3538 cnstr = NULL; // no constructor for this form | |
3539 next_char(); // Move past the ';', replaced with '\0' | |
3540 } | |
3541 else if ((cnstr = find_cpp_block("match constructor")) == NULL ) { | |
3542 parse_err(SYNERR, "invalid construction of match rule\n" | |
3543 "Missing ';' or invalid '%{' and '%}' constructor\n"); | |
3544 return NULL; // No MatchRule to return | |
3545 } | |
3546 if (_AD._adl_debug > 1) | |
3547 if (cnstr) fprintf(stderr,"Match Constructor: %s\n", cnstr); | |
3548 // Build new MatchRule object | |
3549 match = new MatchRule(_AD, mnode, depth, cnstr, numleaves); | |
3550 skipws(); // Skip any trailing whitespace | |
3551 return match; // Return MatchRule object | |
3552 } | |
3553 | |
3554 //------------------------------format_parse----------------------------------- | |
3555 FormatRule* ADLParser::format_parse(void) { | |
3556 char *desc = NULL; | |
3557 FormatRule *format = (new FormatRule(desc)); | |
3558 | |
3559 // Without expression form, MUST have a code block; | |
3560 skipws(); // Skip whitespace | |
3561 if ( _curchar == ';' ) { // Semicolon is valid terminator | |
3562 desc = NULL; // no constructor for this form | |
3563 next_char(); // Move past the ';', replaced with '\0' | |
3564 } | |
3565 else if ( _curchar == '%' && *(_ptr+1) == '{') { | |
3566 next_char(); // Move past the '%' | |
3567 next_char(); // Move past the '{' | |
3568 | |
3569 skipws(); | |
415
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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|
3570 if (_curchar == '$') { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3571 char* ident = get_rep_var_ident(); |
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|
3572 if (strcmp(ident, "$$template") == 0) return template_parse(); |
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|
3573 parse_err(SYNERR, "Unknown \"%s\" directive in format", ident); |
4d9884b01ba6
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parents:
0
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|
3574 return NULL; |
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diff
changeset
|
3575 } |
0 | 3576 // Check for the opening '"' inside the format description |
3577 if ( _curchar == '"' ) { | |
3578 next_char(); // Move past the initial '"' | |
3579 if( _curchar == '"' ) { // Handle empty format string case | |
3580 *_ptr = '\0'; // Terminate empty string | |
3581 format->_strings.addName(_ptr); | |
3582 } | |
3583 | |
3584 // Collect the parts of the format description | |
3585 // (1) strings that are passed through to tty->print | |
3586 // (2) replacement/substitution variable, preceeded by a '$' | |
3587 // (3) multi-token ANSIY C style strings | |
3588 while ( true ) { | |
3589 if ( _curchar == '%' || _curchar == '\n' ) { | |
3590 if ( _curchar != '"' ) { | |
3591 parse_err(SYNERR, "missing '\"' at end of format block"); | |
3592 return NULL; | |
3593 } | |
3594 } | |
3595 | |
3596 // (1) | |
3597 // Check if there is a string to pass through to output | |
3598 char *start = _ptr; // Record start of the next string | |
3599 while ((_curchar != '$') && (_curchar != '"') && (_curchar != '%') && (_curchar != '\n')) { | |
475
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
3600 if (_curchar == '\\') { |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
3601 next_char(); // superquote |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
3602 if ((_curchar == '$') || (_curchar == '%')) |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
3603 // hack to avoid % escapes and warnings about undefined \ escapes |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
3604 *(_ptr-1) = _curchar; |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
3605 } |
0 | 3606 if (_curchar == '\n') parse_err(SYNERR, "newline in string"); // unimplemented! |
3607 next_char(); | |
3608 } | |
3609 // If a string was found, terminate it and record in FormatRule | |
3610 if ( start != _ptr ) { | |
3611 *_ptr = '\0'; // Terminate the string | |
3612 format->_strings.addName(start); | |
3613 } | |
3614 | |
3615 // (2) | |
3616 // If we are at a replacement variable, | |
3617 // copy it and record in FormatRule | |
3618 if ( _curchar == '$' ) { | |
3619 next_char(); // Move past the '$' | |
3620 char* rep_var = get_ident(); // Nil terminate the variable name | |
3621 rep_var = strdup(rep_var);// Copy the string | |
3622 *_ptr = _curchar; // and replace Nil with original character | |
3623 format->_rep_vars.addName(rep_var); | |
3624 // Add flag to _strings list indicating we should check _rep_vars | |
3625 format->_strings.addName(NameList::_signal); | |
3626 } | |
3627 | |
3628 // (3) | |
3629 // Allow very long strings to be broken up, | |
3630 // using the ANSI C syntax "foo\n" <newline> "bar" | |
3631 if ( _curchar == '"') { | |
3632 next_char(); // Move past the '"' | |
3633 skipws(); // Skip white space before next string token | |
3634 if ( _curchar != '"') { | |
3635 break; | |
3636 } else { | |
3637 // Found one. Skip both " and the whitespace in between. | |
3638 next_char(); | |
3639 } | |
3640 } | |
3641 } // end while part of format description | |
3642 | |
3643 // Check for closing '"' and '%}' in format description | |
3644 skipws(); // Move to closing '%}' | |
3645 if ( _curchar != '%' ) { | |
3646 parse_err(SYNERR, "non-blank characters between closing '\"' and '%' in format"); | |
3647 return NULL; | |
3648 } | |
3649 } // Done with format description inside | |
3650 | |
3651 skipws(); | |
3652 // Past format description, at '%' | |
3653 if ( _curchar != '%' || *(_ptr+1) != '}' ) { | |
3654 parse_err(SYNERR, "missing '%}' at end of format block"); | |
3655 return NULL; | |
3656 } | |
3657 next_char(); // Move past the '%' | |
3658 next_char(); // Move past the '}' | |
3659 } | |
3660 else { // parameter list alone must terminate with a ';' | |
3661 parse_err(SYNERR, "missing ';' after Format expression"); | |
3662 return NULL; | |
3663 } | |
3664 // Debug Stuff | |
3665 if (_AD._adl_debug > 1) fprintf(stderr,"Format Rule: %s\n", desc); | |
3666 | |
3667 skipws(); | |
3668 return format; | |
3669 } | |
3670 | |
3671 | |
415
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
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|
3672 //------------------------------template_parse----------------------------------- |
4d9884b01ba6
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parents:
0
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changeset
|
3673 FormatRule* ADLParser::template_parse(void) { |
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
|
3674 char *desc = 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
diff
changeset
|
3675 FormatRule *format = (new FormatRule(desc)); |
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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
|
3676 |
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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
|
3677 skipws(); |
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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
|
3678 while ( (_curchar != '%') && (*(_ptr+1) != '}') ) { |
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
|
3679 |
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
|
3680 // (1) |
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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
changeset
|
3681 // Check if there is a string to pass through to output |
603
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3682 { |
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
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488
diff
changeset
|
3683 char *start = _ptr; // Record start of the next string |
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3684 while ((_curchar != '$') && ((_curchar != '%') || (*(_ptr+1) != '}')) ) { |
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3685 // If at the start of a comment, skip past it |
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3686 if( (_curchar == '/') && ((*(_ptr+1) == '/') || (*(_ptr+1) == '*')) ) { |
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3687 skipws_no_preproc(); |
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3688 } else { |
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3689 // ELSE advance to the next character, or start of the next line |
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3690 next_char_or_line(); |
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3691 } |
415
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
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diff
changeset
|
3692 } |
603
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3693 // If a string was found, terminate it and record in EncClass |
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3694 if ( start != _ptr ) { |
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3695 *_ptr = '\0'; // Terminate the string |
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3696 // Add flag to _strings list indicating we should check _rep_vars |
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3697 format->_strings.addName(NameList::_signal2); |
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3698 format->_strings.addName(start); |
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3699 } |
415
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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|
3700 } |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3701 |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3702 // (2) |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3703 // If we are at a replacement variable, |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3704 // copy it and record in EncClass |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3705 if ( _curchar == '$' ) { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3706 // Found replacement Variable |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3707 char *rep_var = get_rep_var_ident_dup(); |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3708 if (strcmp(rep_var, "$emit") == 0) { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3709 // switch to normal format parsing |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3710 next_char(); |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3711 next_char(); |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3712 skipws(); |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3713 // Check for the opening '"' inside the format description |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3714 if ( _curchar == '"' ) { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3715 next_char(); // Move past the initial '"' |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3716 if( _curchar == '"' ) { // Handle empty format string case |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3717 *_ptr = '\0'; // Terminate empty string |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3718 format->_strings.addName(_ptr); |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3719 } |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3720 |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3721 // Collect the parts of the format description |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3722 // (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
never
parents:
0
diff
changeset
|
3723 // (2) replacement/substitution variable, preceeded by a '$' |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3724 // (3) multi-token ANSIY C style strings |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3725 while ( true ) { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3726 if ( _curchar == '%' || _curchar == '\n' ) { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3727 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
never
parents:
0
diff
changeset
|
3728 return NULL; |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3729 } |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3730 |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3731 // (1) |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3732 // 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
never
parents:
0
diff
changeset
|
3733 char *start = _ptr; // Record start of the next string |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3734 while ((_curchar != '$') && (_curchar != '"') && (_curchar != '%') && (_curchar != '\n')) { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3735 if (_curchar == '\\') next_char(); // superquote |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3736 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
never
parents:
0
diff
changeset
|
3737 next_char(); |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3738 } |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3739 // 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
never
parents:
0
diff
changeset
|
3740 if ( start != _ptr ) { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3741 *_ptr = '\0'; // Terminate the string |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3742 format->_strings.addName(start); |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3743 } |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3744 |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3745 // (2) |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3746 // If we are at a replacement variable, |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3747 // copy it and record in FormatRule |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3748 if ( _curchar == '$' ) { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3749 next_char(); // Move past the '$' |
603
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3750 char* next_rep_var = get_ident(); // Nil terminate the variable name |
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3751 next_rep_var = strdup(next_rep_var);// Copy the string |
415
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3752 *_ptr = _curchar; // and replace Nil with original character |
603
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3753 format->_rep_vars.addName(next_rep_var); |
415
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3754 // 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
never
parents:
0
diff
changeset
|
3755 format->_strings.addName(NameList::_signal); |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3756 } |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3757 |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3758 // (3) |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3759 // 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
never
parents:
0
diff
changeset
|
3760 // using the ANSI C syntax "foo\n" <newline> "bar" |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3761 if ( _curchar == '"') { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3762 next_char(); // Move past the '"' |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3763 skipws(); // Skip white space before next string token |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3764 if ( _curchar != '"') { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3765 break; |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3766 } else { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3767 // Found one. Skip both " and the whitespace in between. |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3768 next_char(); |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3769 } |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3770 } |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3771 } // end while part of format description |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3772 } |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3773 } else { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3774 // 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
never
parents:
0
diff
changeset
|
3775 format->_rep_vars.addName(rep_var); |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3776 // 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
never
parents:
0
diff
changeset
|
3777 format->_strings.addName(NameList::_signal3); |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3778 } |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3779 } // end while part of format description |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3780 } |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3781 |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3782 skipws(); |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3783 // Past format description, at '%' |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3784 if ( _curchar != '%' || *(_ptr+1) != '}' ) { |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3785 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
never
parents:
0
diff
changeset
|
3786 return NULL; |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3787 } |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3788 next_char(); // Move past the '%' |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3789 next_char(); // Move past the '}' |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3790 |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3791 // Debug Stuff |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3792 if (_AD._adl_debug > 1) fprintf(stderr,"Format Rule: %s\n", desc); |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3793 |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3794 skipws(); |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3795 return format; |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3796 } |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3797 |
4d9884b01ba6
6754519: don't emit flag fixup for NaN when condition being tested doesn't need it
never
parents:
0
diff
changeset
|
3798 |
0 | 3799 //------------------------------effect_parse----------------------------------- |
3800 void ADLParser::effect_parse(InstructForm *instr) { | |
3801 char* desc = NULL; | |
3802 | |
3803 skipws(); // Skip whitespace | |
3804 if (_curchar != '(') { | |
3805 parse_err(SYNERR, "missing '(' in effect definition\n"); | |
3806 return; | |
3807 } | |
3808 // Get list of effect-operand pairs and insert into dictionary | |
3809 else get_effectlist(instr->_effects, instr->_localNames); | |
3810 | |
3811 // Debug Stuff | |
3812 if (_AD._adl_debug > 1) fprintf(stderr,"Effect description: %s\n", desc); | |
3813 if (_curchar != ';') { | |
3814 parse_err(SYNERR, "missing ';' in Effect definition\n"); | |
3815 } | |
3816 next_char(); // Skip ';' | |
3817 | |
3818 } | |
3819 | |
3820 //------------------------------expand_parse----------------------------------- | |
3821 ExpandRule* ADLParser::expand_parse(InstructForm *instr) { | |
3822 char *ident, *ident2; | |
3823 OperandForm *oper; | |
3824 InstructForm *ins; | |
3825 NameAndList *instr_and_operands = NULL; | |
3826 ExpandRule *exp = new ExpandRule(); | |
3827 | |
3828 // Expand is a block containing an ordered list of instructions, each of | |
3829 // which has an ordered list of operands. | |
3830 // Check for block delimiter | |
3831 skipws(); // Skip leading whitespace | |
3832 if ((_curchar != '%') | |
3833 || (next_char(), (_curchar != '{')) ) { // If not open block | |
3834 parse_err(SYNERR, "missing '%{' in expand definition\n"); | |
3835 return(NULL); | |
3836 } | |
3837 next_char(); // Maintain the invariant | |
3838 do { | |
3839 ident = get_ident(); // Grab next identifier | |
3840 if (ident == NULL) { | |
3841 parse_err(SYNERR, "identifier expected at %c\n", _curchar); | |
3842 continue; | |
3843 } // Check that you have a valid instruction | |
3844 const Form *form = _globalNames[ident]; | |
3845 ins = form ? form->is_instruction() : NULL; | |
3846 if (ins == NULL) { | |
3847 // This is a new operand | |
3848 oper = form ? form->is_operand() : NULL; | |
3849 if (oper == NULL) { | |
3850 parse_err(SYNERR, "instruction/operand name expected at %s\n", ident); | |
3851 continue; | |
3852 } | |
3853 // Throw the operand on the _newopers list | |
3854 skipws(); | |
3855 ident = get_unique_ident(instr->_localNames,"Operand"); | |
3856 if (ident == NULL) { | |
3857 parse_err(SYNERR, "identifier expected at %c\n", _curchar); | |
3858 continue; | |
3859 } | |
3860 exp->_newopers.addName(ident); | |
3861 // Add new operand to LocalNames | |
3862 instr->_localNames.Insert(ident, oper); | |
3863 // Grab any constructor code and save as a string | |
3864 char *c = NULL; | |
3865 skipws(); | |
3866 if (_curchar == '%') { // Need a constructor for the operand | |
3867 c = find_cpp_block("Operand Constructor"); | |
3868 if (c == NULL) { | |
3869 parse_err(SYNERR, "Invalid code block for operand constructor\n", _curchar); | |
3870 continue; | |
3871 } | |
3872 // Add constructor to _newopconst Dict | |
3873 exp->_newopconst.Insert(ident, c); | |
3874 } | |
3875 else if (_curchar != ';') { // If no constructor, need a ; | |
3876 parse_err(SYNERR, "Missing ; in expand rule operand declaration\n"); | |
3877 continue; | |
3878 } | |
3879 else next_char(); // Skip the ; | |
3880 skipws(); | |
3881 } | |
3882 else { | |
3883 // Add instruction to list | |
3884 instr_and_operands = new NameAndList(ident); | |
3885 // Grab operands, build nameList of them, and then put into dictionary | |
3886 skipws(); | |
3887 if (_curchar != '(') { // Check for parenthesized operand list | |
3888 parse_err(SYNERR, "missing '(' in expand instruction declaration\n"); | |
3889 continue; | |
3890 } | |
3891 do { | |
3892 next_char(); // skip open paren & comma characters | |
3893 skipws(); | |
3894 if (_curchar == ')') break; | |
3895 ident2 = get_ident(); | |
3896 skipws(); | |
3897 if (ident2 == NULL) { | |
3898 parse_err(SYNERR, "identifier expected at %c\n", _curchar); | |
3899 continue; | |
3900 } // Check that you have a valid operand | |
603
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3901 const Form *form2 = instr->_localNames[ident2]; |
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3902 if (!form2) { |
0 | 3903 parse_err(SYNERR, "operand name expected at %s\n", ident2); |
3904 continue; | |
3905 } | |
603
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3906 oper = form2->is_operand(); |
dbbe28fc66b5
6778669: Patch from Red Hat -- fixes compilation errors
twisti
parents:
488
diff
changeset
|
3907 if (oper == NULL && !form2->is_opclass()) { |
0 | 3908 parse_err(SYNERR, "operand name expected at %s\n", ident2); |
3909 continue; | |
3910 } // Add operand to list | |
3911 instr_and_operands->add_entry(ident2); | |
3912 } while(_curchar == ','); | |
3913 if (_curchar != ')') { | |
3914 parse_err(SYNERR, "missing ')'in expand instruction declaration\n"); | |
3915 continue; | |
3916 } | |
3917 next_char(); | |
3918 if (_curchar != ';') { | |
3919 parse_err(SYNERR, "missing ';'in expand instruction declaration\n"); | |
3920 continue; | |
3921 } | |
3922 next_char(); | |
3923 | |
3924 // Record both instruction name and its operand list | |
3925 exp->add_instruction(instr_and_operands); | |
3926 | |
3927 skipws(); | |
3928 } | |
3929 | |
3930 } while(_curchar != '%'); | |
3931 next_char(); | |
3932 if (_curchar != '}') { | |
3933 parse_err(SYNERR, "missing '%}' in expand rule definition\n"); | |
3934 return(NULL); | |
3935 } | |
3936 next_char(); | |
3937 | |
3938 // Debug Stuff | |
3939 if (_AD._adl_debug > 1) fprintf(stderr,"Expand Rule:\n"); | |
3940 | |
3941 skipws(); | |
3942 return (exp); | |
3943 } | |
3944 | |
3945 //------------------------------rewrite_parse---------------------------------- | |
3946 RewriteRule* ADLParser::rewrite_parse(void) { | |
3947 char* params = NULL; | |
3948 char* desc = NULL; | |
3949 | |
3950 | |
3951 // This feature targeted for second generation description language. | |
3952 | |
3953 skipws(); // Skip whitespace | |
3954 // Get parameters for rewrite | |
3955 if ((params = get_paren_expr("rewrite parameters")) == NULL) { | |
3956 parse_err(SYNERR, "missing '(' in rewrite rule\n"); | |
3957 return NULL; | |
3958 } | |
3959 // Debug Stuff | |
3960 if (_AD._adl_debug > 1) fprintf(stderr,"Rewrite parameters: %s\n", params); | |
3961 | |
3962 // For now, grab entire block; | |
3963 skipws(); | |
3964 if ( (desc = find_cpp_block("rewrite block")) == NULL ) { | |
3965 parse_err(SYNERR, "incorrect or missing block for 'rewrite'.\n"); | |
3966 return NULL; | |
3967 } | |
3968 // Debug Stuff | |
3969 if (_AD._adl_debug > 1) fprintf(stderr,"Rewrite Rule: %s\n", desc); | |
3970 | |
3971 skipws(); | |
3972 return (new RewriteRule(params,desc)); | |
3973 } | |
3974 | |
3975 //------------------------------attr_parse------------------------------------- | |
3976 Attribute *ADLParser::attr_parse(char* ident) { | |
3977 Attribute *attrib; // Attribute class | |
3978 char *cost = NULL; // String representation of cost attribute | |
3979 | |
3980 skipws(); // Skip leading whitespace | |
3981 if ( (cost = get_paren_expr("attribute")) == NULL ) { | |
3982 parse_err(SYNERR, "incorrect or missing expression for 'attribute'\n"); | |
3983 return NULL; | |
3984 } | |
3985 // Debug Stuff | |
3986 if (_AD._adl_debug > 1) fprintf(stderr,"Attribute: %s\n", cost); | |
3987 if (_curchar != ';') { | |
3988 parse_err(SYNERR, "missing ';' in attribute definition\n"); | |
3989 return NULL; | |
3990 } | |
3991 next_char(); // Point after the terminator | |
3992 | |
3993 skipws(); | |
3994 attrib = new Attribute(ident,cost,INS_ATTR); // Build new predicate object | |
3995 return attrib; | |
3996 } | |
3997 | |
3998 | |
3999 //------------------------------matchNode_parse-------------------------------- | |
4000 MatchNode *ADLParser::matchNode_parse(FormDict &operands, int &depth, int &numleaves, bool atroot) { | |
4001 // Count depth of parenthesis nesting for both left and right children | |
4002 int lParens = depth; | |
4003 int rParens = depth; | |
4004 | |
4005 // MatchNode objects for left, right, and root of subtree. | |
4006 MatchNode *lChild = NULL; | |
4007 MatchNode *rChild = NULL; | |
4008 char *token; // Identifier which may be opcode or operand | |
4009 | |
4010 // Match expression starts with a '(' | |
4011 if (cur_char() != '(') | |
4012 return NULL; | |
4013 | |
4014 next_char(); // advance past '(' | |
4015 | |
4016 // Parse the opcode | |
4017 token = get_ident(); // Get identifier, opcode | |
4018 if (token == NULL) { | |
4019 parse_err(SYNERR, "missing opcode in match expression\n"); | |
4020 return NULL; | |
4021 } | |
4022 | |
4023 // Take note if we see one of a few special operations - those that are | |
4024 // treated differently on different architectures in the sense that on | |
4025 // one architecture there is a match rule and on another there isn't (so | |
4026 // a call will eventually be generated). | |
4027 | |
4028 for (int i = _last_machine_leaf + 1; i < _last_opcode; i++) { | |
4029 if (strcmp(token, NodeClassNames[i]) == 0) { | |
4030 _AD.has_match_rule(i, true); | |
4031 } | |
4032 } | |
4033 | |
4034 // Lookup the root value in the operands dict to perform substitution | |
4035 const char *result = NULL; // Result type will be filled in later | |
4036 const char *name = token; // local name associated with this node | |
4037 const char *operation = token; // remember valid operation for later | |
4038 const Form *form = operands[token]; | |
4039 OpClassForm *opcForm = form ? form->is_opclass() : NULL; | |
4040 if (opcForm != NULL) { | |
4041 // If this token is an entry in the local names table, record its type | |
4042 if (!opcForm->ideal_only()) { | |
4043 operation = opcForm->_ident; | |
4044 result = operation; // Operands result in their own type | |
4045 } | |
4046 // Otherwise it is an ideal type, and so, has no local name | |
4047 else name = NULL; | |
4048 } | |
4049 | |
4050 // Parse the operands | |
4051 skipws(); | |
4052 if (cur_char() != ')') { | |
4053 | |
4054 // Parse the left child | |
4055 if (strcmp(operation,"Set")) | |
4056 lChild = matchChild_parse(operands, lParens, numleaves, false); | |
4057 else | |
4058 lChild = matchChild_parse(operands, lParens, numleaves, true); | |
4059 | |
4060 skipws(); | |
4061 if (cur_char() != ')' ) { | |
4062 if(strcmp(operation, "Set")) | |
4063 rChild = matchChild_parse(operands,rParens,numleaves,false); | |
4064 else | |
4065 rChild = matchChild_parse(operands,rParens,numleaves,true); | |
4066 } | |
4067 } | |
4068 | |
4069 // Check for required ')' | |
4070 skipws(); | |
4071 if (cur_char() != ')') { | |
4072 parse_err(SYNERR, "missing ')' in match expression\n"); | |
4073 return NULL; | |
4074 } | |
4075 next_char(); // skip the ')' | |
4076 | |
4077 MatchNode* mroot = new MatchNode(_AD,result,name,operation,lChild,rChild); | |
4078 | |
4079 // If not the root, reduce this subtree to an internal operand | |
4080 if (!atroot) { | |
4081 mroot->build_internalop(); | |
4082 } | |
4083 // depth is greater of left and right paths. | |
4084 depth = (lParens > rParens) ? lParens : rParens; | |
4085 | |
4086 return mroot; | |
4087 } | |
4088 | |
4089 | |
4090 //------------------------------matchChild_parse------------------------------- | |
4091 MatchNode *ADLParser::matchChild_parse(FormDict &operands, int &parens, int &numleaves, bool atroot) { | |
4092 MatchNode *child = NULL; | |
4093 const char *result = NULL; | |
4094 const char *token = NULL; | |
4095 const char *opType = NULL; | |
4096 | |
4097 if (cur_char() == '(') { // child is an operation | |
4098 ++parens; | |
4099 child = matchNode_parse(operands, parens, numleaves, atroot); | |
4100 } | |
4101 else { // child is an operand | |
4102 token = get_ident(); | |
4103 const Form *form = operands[token]; | |
4104 OpClassForm *opcForm = form ? form->is_opclass() : NULL; | |
4105 if (opcForm != NULL) { | |
4106 opType = opcForm->_ident; | |
4107 result = opcForm->_ident; // an operand's result matches its type | |
4108 } else { | |
4109 parse_err(SYNERR, "undefined operand %s in match rule\n", token); | |
4110 return NULL; | |
4111 } | |
4112 | |
4113 if (opType == NULL) { | |
4114 parse_err(SYNERR, "missing type for argument '%s'\n", token); | |
4115 } | |
4116 | |
4117 child = new MatchNode(_AD, result, token, opType); | |
4118 ++numleaves; | |
4119 } | |
4120 | |
4121 return child; | |
4122 } | |
4123 | |
4124 | |
4125 | |
4126 // ******************** Private Utility Functions ************************* | |
4127 | |
4128 | |
4129 char* ADLParser::find_cpp_block(const char* description) { | |
4130 char *next; // Pointer for finding block delimiters | |
4131 char* cppBlock = NULL; // Beginning of C++ code block | |
4132 | |
4133 if (_curchar == '%') { // Encoding is a C++ expression | |
4134 next_char(); | |
4135 if (_curchar != '{') { | |
4136 parse_err(SYNERR, "missing '{' in %s \n", description); | |
4137 return NULL; | |
4138 } | |
4139 next_char(); // Skip block delimiter | |
4140 skipws_no_preproc(); // Skip leading whitespace | |
4141 cppBlock = _ptr; // Point to start of expression | |
475
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4142 int line = linenum(); |
0 | 4143 next = _ptr + 1; |
4144 while(((_curchar != '%') || (*next != '}')) && (_curchar != '\0')) { | |
4145 next_char_or_line(); | |
4146 next = _ptr+1; // Maintain the next pointer | |
4147 } // Grab string | |
4148 if (_curchar == '\0') { | |
4149 parse_err(SYNERR, "invalid termination of %s \n", description); | |
4150 return NULL; | |
4151 } | |
4152 *_ptr = '\0'; // Terminate string | |
4153 _ptr += 2; // Skip block delimiter | |
4154 _curchar = *_ptr; // Maintain invariant | |
4155 | |
4156 // Prepend location descriptor, for debugging. | |
475
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4157 if (_AD._adlocation_debug) { |
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4158 char* location = get_line_string(line); |
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4159 char* end_loc = end_line_marker(); |
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4160 char* result = (char *)malloc(strlen(location) + strlen(cppBlock) + strlen(end_loc) + 1); |
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4161 strcpy(result, location); |
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4162 strcat(result, cppBlock); |
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4163 strcat(result, end_loc); |
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4164 cppBlock = result; |
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4165 free(location); |
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4166 } |
0 | 4167 } |
4168 | |
4169 return cppBlock; | |
4170 } | |
4171 | |
4172 // Move to the closing token of the expression we are currently at, | |
4173 // as defined by stop_chars. Match parens and quotes. | |
4174 char* ADLParser::get_expr(const char *desc, const char *stop_chars) { | |
4175 char* expr = NULL; | |
4176 int paren = 0; | |
4177 | |
4178 expr = _ptr; | |
4179 while (paren > 0 || !strchr(stop_chars, _curchar)) { | |
4180 if (_curchar == '(') { // Down level of nesting | |
4181 paren++; // Bump the parenthesis counter | |
4182 next_char(); // maintain the invariant | |
4183 } | |
4184 else if (_curchar == ')') { // Up one level of nesting | |
4185 if (paren == 0) { | |
4186 // Paren underflow: We didn't encounter the required stop-char. | |
4187 parse_err(SYNERR, "too many )'s, did not find %s after %s\n", | |
4188 stop_chars, desc); | |
4189 return NULL; | |
4190 } | |
4191 paren--; // Drop the parenthesis counter | |
4192 next_char(); // Maintain the invariant | |
4193 } | |
4194 else if (_curchar == '"' || _curchar == '\'') { | |
4195 int qchar = _curchar; | |
4196 while (true) { | |
4197 next_char(); | |
4198 if (_curchar == qchar) { next_char(); break; } | |
4199 if (_curchar == '\\') next_char(); // superquote | |
4200 if (_curchar == '\n' || _curchar == '\0') { | |
4201 parse_err(SYNERR, "newline in string in %s\n", desc); | |
4202 return NULL; | |
4203 } | |
4204 } | |
4205 } | |
4206 else if (_curchar == '%' && (_ptr[1] == '{' || _ptr[1] == '}')) { | |
4207 // Make sure we do not stray into the next ADLC-level form. | |
4208 parse_err(SYNERR, "unexpected %%%c in %s\n", _ptr[1], desc); | |
4209 return NULL; | |
4210 } | |
4211 else if (_curchar == '\0') { | |
4212 parse_err(SYNERR, "unexpected EOF in %s\n", desc); | |
4213 return NULL; | |
4214 } | |
4215 else { | |
4216 // Always walk over whitespace, comments, preprocessor directives, etc. | |
4217 char* pre_skip_ptr = _ptr; | |
4218 skipws(); | |
4219 // If the parser declined to make progress on whitespace, | |
4220 // skip the next character, which is therefore NOT whitespace. | |
4221 if (pre_skip_ptr == _ptr) { | |
4222 next_char(); | |
4223 } else if (pre_skip_ptr+strlen(pre_skip_ptr) != _ptr+strlen(_ptr)) { | |
4224 parse_err(SYNERR, "unimplemented: preprocessor must not elide subexpression in %s", desc); | |
4225 } | |
4226 } | |
4227 } | |
4228 | |
4229 assert(strchr(stop_chars, _curchar), "non-null return must be at stop-char"); | |
4230 *_ptr = '\0'; // Replace ')' or other stop-char with '\0' | |
4231 return expr; | |
4232 } | |
4233 | |
4234 // Helper function around get_expr | |
4235 // Sets _curchar to '(' so that get_paren_expr will search for a matching ')' | |
475
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4236 char *ADLParser::get_paren_expr(const char *description, bool include_location) { |
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4237 int line = linenum(); |
0 | 4238 if (_curchar != '(') // Escape if not valid starting position |
4239 return NULL; | |
4240 next_char(); // Skip the required initial paren. | |
4241 char *token2 = get_expr(description, ")"); | |
4242 if (_curchar == ')') | |
4243 next_char(); // Skip required final paren. | |
475
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4244 int junk = 0; |
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4245 if (include_location && _AD._adlocation_debug && !is_int_token(token2, junk)) { |
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4246 // Prepend location descriptor, for debugging. |
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4247 char* location = get_line_string(line); |
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4248 char* end_loc = end_line_marker(); |
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4249 char* result = (char *)malloc(strlen(location) + strlen(token2) + strlen(end_loc) + 1); |
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4250 strcpy(result, location); |
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4251 strcat(result, token2); |
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4252 strcat(result, end_loc); |
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4253 token2 = result; |
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4254 free(location); |
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4255 } |
0 | 4256 return token2; |
4257 } | |
4258 | |
4259 //------------------------------get_ident_common------------------------------- | |
4260 // Looks for an identifier in the buffer, and turns it into a null terminated | |
4261 // string(still inside the file buffer). Returns a pointer to the string or | |
4262 // NULL if some other token is found instead. | |
4263 char *ADLParser::get_ident_common(bool do_preproc) { | |
4264 register char c; | |
4265 char *start; // Pointer to start of token | |
4266 char *end; // Pointer to end of token | |
4267 | |
4268 if( _curline == NULL ) // Return NULL at EOF. | |
4269 return NULL; | |
4270 | |
4271 skipws_common(do_preproc); // Skip whitespace before identifier | |
4272 start = end = _ptr; // Start points at first character | |
4273 end--; // unwind end by one to prepare for loop | |
4274 do { | |
4275 end++; // Increment end pointer | |
4276 c = *end; // Grab character to test | |
4277 } while ( ((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z')) | |
4278 || ((c >= '0') && (c <= '9')) | |
4279 || ((c == '_')) || ((c == ':')) || ((c == '#')) ); | |
4280 if (start == end) { // We popped out on the first try | |
4281 parse_err(SYNERR, "identifier expected at %c\n", c); | |
4282 start = NULL; | |
4283 } | |
4284 else { | |
4285 _curchar = c; // Save the first character of next token | |
4286 *end = '\0'; // NULL terminate the string in place | |
4287 } | |
4288 _ptr = end; // Reset _ptr to point to next char after token | |
4289 | |
4290 // Make sure we do not try to use #defined identifiers. If start is | |
4291 // NULL an error was already reported. | |
4292 if (do_preproc && start != NULL) { | |
4293 const char* def = _AD.get_preproc_def(start); | |
4294 if (def != NULL && strcmp(def, start)) { | |
475
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4295 const char* def1 = def; |
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4296 const char* def2 = _AD.get_preproc_def(def1); |
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4297 // implement up to 2 levels of #define |
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4298 if (def2 != NULL && strcmp(def2, def1)) { |
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4299 def = def2; |
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4300 const char* def3 = _AD.get_preproc_def(def2); |
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4301 if (def3 != NULL && strcmp(def3, def2) && strcmp(def3, def1)) { |
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4302 parse_err(SYNERR, "unimplemented: using %s defined as %s => %s => %s", |
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4303 start, def1, def2, def3); |
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4304 } |
0 | 4305 } |
4306 start = strdup(def); | |
4307 } | |
4308 } | |
4309 | |
4310 return start; // Pointer to token in filebuf | |
4311 } | |
4312 | |
4313 //------------------------------get_ident_dup---------------------------------- | |
4314 // Looks for an identifier in the buffer, and returns a duplicate | |
4315 // or NULL if some other token is found instead. | |
4316 char *ADLParser::get_ident_dup(void) { | |
4317 char *ident = get_ident(); | |
4318 | |
4319 // Duplicate an identifier before returning and restore string. | |
4320 if( ident != NULL ) { | |
4321 ident = strdup(ident); // Copy the string | |
4322 *_ptr = _curchar; // and replace Nil with original character | |
4323 } | |
4324 | |
4325 return ident; | |
4326 } | |
4327 | |
4328 //----------------------get_ident_or_literal_constant-------------------------- | |
4329 // Looks for an identifier in the buffer, or a parenthesized expression. | |
4330 char *ADLParser::get_ident_or_literal_constant(const char* description) { | |
4331 char* param = NULL; | |
4332 skipws(); | |
4333 if (_curchar == '(') { | |
4334 // Grab a constant expression. | |
4335 param = get_paren_expr(description); | |
4336 if (param[0] != '(') { | |
4337 char* buf = (char*) malloc(strlen(param) + 3); | |
4338 sprintf(buf, "(%s)", param); | |
4339 param = buf; | |
4340 } | |
4341 assert(is_literal_constant(param), | |
4342 "expr must be recognizable as a constant"); | |
4343 } else { | |
4344 param = get_ident(); | |
4345 } | |
4346 return param; | |
4347 } | |
4348 | |
4349 //------------------------------get_rep_var_ident----------------------------- | |
4350 // Do NOT duplicate, | |
4351 // Leave nil terminator in buffer | |
4352 // Preserve initial '$'(s) in string | |
4353 char *ADLParser::get_rep_var_ident(void) { | |
4354 // Remember starting point | |
4355 char *rep_var = _ptr; | |
4356 | |
4357 // Check for replacement variable indicator '$' and pass if present | |
4358 if ( _curchar == '$' ) { | |
4359 next_char(); | |
4360 } | |
4361 // Check for a subfield indicator, a second '$', and pass if present | |
4362 if ( _curchar == '$' ) { | |
4363 next_char(); | |
4364 } | |
4365 | |
4366 // Check for a control indicator, a third '$': | |
4367 if ( _curchar == '$' ) { | |
4368 next_char(); | |
4369 } | |
4370 | |
4371 // Check for more than three '$'s in sequence, SYNERR | |
4372 if( _curchar == '$' ) { | |
4373 parse_err(SYNERR, "Replacement variables and field specifiers can not start with '$$$$'"); | |
4374 next_char(); | |
4375 return NULL; | |
4376 } | |
4377 | |
4378 // Nil terminate the variable name following the '$' | |
4379 char *rep_var_name = get_ident(); | |
4380 assert( rep_var_name != NULL, | |
4381 "Missing identifier after replacement variable indicator '$'"); | |
4382 | |
4383 return rep_var; | |
4384 } | |
4385 | |
4386 | |
4387 | |
4388 //------------------------------get_rep_var_ident_dup------------------------- | |
4389 // Return the next replacement variable identifier, skipping first '$' | |
4390 // given a pointer into a line of the buffer. | |
4391 // Null terminates string, still inside the file buffer, | |
4392 // Returns a pointer to a copy of the string, or NULL on failure | |
4393 char *ADLParser::get_rep_var_ident_dup(void) { | |
4394 if( _curchar != '$' ) return NULL; | |
4395 | |
4396 next_char(); // Move past the '$' | |
4397 char *rep_var = _ptr; // Remember starting point | |
4398 | |
4399 // Check for a subfield indicator, a second '$': | |
4400 if ( _curchar == '$' ) { | |
4401 next_char(); | |
4402 } | |
4403 | |
4404 // Check for a control indicator, a third '$': | |
4405 if ( _curchar == '$' ) { | |
4406 next_char(); | |
4407 } | |
4408 | |
4409 // Check for more than three '$'s in sequence, SYNERR | |
4410 if( _curchar == '$' ) { | |
4411 parse_err(SYNERR, "Replacement variables and field specifiers can not start with '$$$$'"); | |
4412 next_char(); | |
4413 return NULL; | |
4414 } | |
4415 | |
4416 // Nil terminate the variable name following the '$' | |
4417 char *rep_var_name = get_ident(); | |
4418 assert( rep_var_name != NULL, | |
4419 "Missing identifier after replacement variable indicator '$'"); | |
4420 rep_var = strdup(rep_var); // Copy the string | |
4421 *_ptr = _curchar; // and replace Nil with original character | |
4422 | |
4423 return rep_var; | |
4424 } | |
4425 | |
4426 | |
4427 //------------------------------get_unique_ident------------------------------ | |
4428 // Looks for an identifier in the buffer, terminates it with a NULL, | |
4429 // and checks that it is unique | |
4430 char *ADLParser::get_unique_ident(FormDict& dict, const char* nameDescription){ | |
4431 char* ident = get_ident(); | |
4432 | |
4433 if (ident == NULL) { | |
4434 parse_err(SYNERR, "missing %s identifier at %c\n", nameDescription, _curchar); | |
4435 } | |
4436 else { | |
4437 if (dict[ident] != NULL) { | |
4438 parse_err(SYNERR, "duplicate name %s for %s\n", ident, nameDescription); | |
4439 ident = NULL; | |
4440 } | |
4441 } | |
4442 | |
4443 return ident; | |
4444 } | |
4445 | |
4446 | |
4447 //------------------------------get_int---------------------------------------- | |
4448 // Looks for a character string integer in the buffer, and turns it into an int | |
4449 // invokes a parse_err if the next token is not an integer. | |
4450 // This routine does not leave the integer null-terminated. | |
4451 int ADLParser::get_int(void) { | |
4452 register char c; | |
4453 char *start; // Pointer to start of token | |
4454 char *end; // Pointer to end of token | |
4455 int result; // Storage for integer result | |
4456 | |
4457 if( _curline == NULL ) // Return NULL at EOF. | |
603
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|
4458 return 0; |
0 | 4459 |
4460 skipws(); // Skip whitespace before identifier | |
4461 start = end = _ptr; // Start points at first character | |
4462 c = *end; // Grab character to test | |
4463 while ((c >= '0') && (c <= '9') | |
4464 || ((c == '-') && (end == start))) { | |
4465 end++; // Increment end pointer | |
4466 c = *end; // Grab character to test | |
4467 } | |
4468 if (start == end) { // We popped out on the first try | |
4469 parse_err(SYNERR, "integer expected at %c\n", c); | |
4470 result = 0; | |
4471 } | |
4472 else { | |
4473 _curchar = c; // Save the first character of next token | |
4474 *end = '\0'; // NULL terminate the string in place | |
4475 result = atoi(start); // Convert the string to an integer | |
4476 *end = _curchar; // Restore buffer to original condition | |
4477 } | |
4478 | |
4479 // Reset _ptr to next char after token | |
4480 _ptr = end; | |
4481 | |
4482 return result; // integer | |
4483 } | |
4484 | |
4485 | |
4486 //------------------------------get_relation_dup------------------------------ | |
4487 // Looks for a relational operator in the buffer | |
4488 // invokes a parse_err if the next token is not a relation | |
4489 // This routine creates a duplicate of the string in the buffer. | |
4490 char *ADLParser::get_relation_dup(void) { | |
4491 char *result = NULL; // relational operator being returned | |
4492 | |
4493 if( _curline == NULL ) // Return NULL at EOF. | |
4494 return NULL; | |
4495 | |
4496 skipws(); // Skip whitespace before relation | |
4497 char *start = _ptr; // Store start of relational operator | |
4498 char first = *_ptr; // the first character | |
4499 if( (first == '=') || (first == '!') || (first == '<') || (first == '>') ) { | |
4500 next_char(); | |
4501 char second = *_ptr; // the second character | |
4502 if( (second == '=') ) { | |
4503 next_char(); | |
4504 char tmp = *_ptr; | |
4505 *_ptr = '\0'; // NULL terminate | |
4506 result = strdup(start); // Duplicate the string | |
4507 *_ptr = tmp; // restore buffer | |
4508 } else { | |
4509 parse_err(SYNERR, "relational operator expected at %s\n", _ptr); | |
4510 } | |
4511 } else { | |
4512 parse_err(SYNERR, "relational operator expected at %s\n", _ptr); | |
4513 } | |
4514 | |
4515 return result; | |
4516 } | |
4517 | |
4518 | |
4519 | |
4520 //------------------------------get_oplist------------------------------------- | |
4521 // Looks for identifier pairs where first must be the name of an operand, and | |
4522 // second must be a name unique in the scope of this instruction. Stores the | |
4523 // names with a pointer to the OpClassForm of their type in a local name table. | |
4524 void ADLParser::get_oplist(NameList ¶meters, FormDict &operands) { | |
4525 OpClassForm *opclass = NULL; | |
4526 char *ident = NULL; | |
4527 | |
4528 do { | |
4529 next_char(); // skip open paren & comma characters | |
4530 skipws(); | |
4531 if (_curchar == ')') break; | |
4532 | |
4533 // Get operand type, and check it against global name table | |
4534 ident = get_ident(); | |
4535 if (ident == NULL) { | |
4536 parse_err(SYNERR, "optype identifier expected at %c\n", _curchar); | |
4537 return; | |
4538 } | |
4539 else { | |
4540 const Form *form = _globalNames[ident]; | |
4541 if( form == NULL ) { | |
4542 parse_err(SYNERR, "undefined operand type %s\n", ident); | |
4543 return; | |
4544 } | |
4545 | |
4546 // Check for valid operand type | |
4547 OpClassForm *opc = form->is_opclass(); | |
4548 OperandForm *oper = form->is_operand(); | |
4549 if((oper == NULL) && (opc == NULL)) { | |
4550 parse_err(SYNERR, "identifier %s not operand type\n", ident); | |
4551 return; | |
4552 } | |
4553 opclass = opc; | |
4554 } | |
4555 // Debugging Stuff | |
4556 if (_AD._adl_debug > 1) fprintf(stderr, "\tOperand Type: %s\t", ident); | |
4557 | |
4558 // Get name of operand and add it to local name table | |
4559 if( (ident = get_unique_ident(operands, "operand")) == NULL) { | |
4560 return; | |
4561 } | |
4562 // Parameter names must not be global names. | |
4563 if( _globalNames[ident] != NULL ) { | |
4564 parse_err(SYNERR, "Reuse of global name %s as operand.\n",ident); | |
4565 return; | |
4566 } | |
4567 operands.Insert(ident, opclass); | |
4568 parameters.addName(ident); | |
4569 | |
4570 // Debugging Stuff | |
4571 if (_AD._adl_debug > 1) fprintf(stderr, "\tOperand Name: %s\n", ident); | |
4572 skipws(); | |
4573 } while(_curchar == ','); | |
4574 | |
4575 if (_curchar != ')') parse_err(SYNERR, "missing ')'\n"); | |
4576 else { | |
4577 next_char(); // set current character position past the close paren | |
4578 } | |
4579 } | |
4580 | |
4581 | |
4582 //------------------------------get_effectlist--------------------------------- | |
4583 // Looks for identifier pairs where first must be the name of a pre-defined, | |
4584 // effect, and the second must be the name of an operand defined in the | |
4585 // operand list of this instruction. Stores the names with a pointer to the | |
4586 // effect form in a local effects table. | |
4587 void ADLParser::get_effectlist(FormDict &effects, FormDict &operands) { | |
4588 OperandForm *opForm; | |
4589 Effect *eForm; | |
4590 char *ident; | |
4591 | |
4592 do { | |
4593 next_char(); // skip open paren & comma characters | |
4594 skipws(); | |
4595 if (_curchar == ')') break; | |
4596 | |
4597 // Get effect type, and check it against global name table | |
4598 ident = get_ident(); | |
4599 if (ident == NULL) { | |
4600 parse_err(SYNERR, "effect type identifier expected at %c\n", _curchar); | |
4601 return; | |
4602 } | |
4603 else { | |
4604 // Check for valid effect type | |
4605 const Form *form = _globalNames[ident]; | |
4606 if( form == NULL ) { | |
4607 parse_err(SYNERR, "undefined effect type %s\n", ident); | |
4608 return; | |
4609 } | |
4610 else { | |
4611 if( (eForm = form->is_effect()) == NULL) { | |
4612 parse_err(SYNERR, "identifier %s not effect type\n", ident); | |
4613 return; | |
4614 } | |
4615 } | |
4616 } | |
4617 // Debugging Stuff | |
4618 if (_AD._adl_debug > 1) fprintf(stderr, "\tEffect Type: %s\t", ident); | |
4619 skipws(); | |
4620 // Get name of operand and check that it is in the local name table | |
4621 if( (ident = get_unique_ident(effects, "effect")) == NULL) { | |
4622 parse_err(SYNERR, "missing operand identifier in effect list\n"); | |
4623 return; | |
4624 } | |
4625 const Form *form = operands[ident]; | |
4626 opForm = form ? form->is_operand() : NULL; | |
4627 if( opForm == NULL ) { | |
4628 if( form && form->is_opclass() ) { | |
4629 const char* cname = form->is_opclass()->_ident; | |
4630 parse_err(SYNERR, "operand classes are illegal in effect lists (found %s %s)\n", cname, ident); | |
4631 } else { | |
4632 parse_err(SYNERR, "undefined operand %s in effect list\n", ident); | |
4633 } | |
4634 return; | |
4635 } | |
4636 // Add the pair to the effects table | |
4637 effects.Insert(ident, eForm); | |
4638 // Debugging Stuff | |
4639 if (_AD._adl_debug > 1) fprintf(stderr, "\tOperand Name: %s\n", ident); | |
4640 skipws(); | |
4641 } while(_curchar == ','); | |
4642 | |
4643 if (_curchar != ')') parse_err(SYNERR, "missing ')'\n"); | |
4644 else { | |
4645 next_char(); // set current character position past the close paren | |
4646 } | |
4647 } | |
4648 | |
4649 | |
475
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415
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|
4650 //-------------------------------preproc_line---------------------------------- |
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|
4651 // A "#line" keyword has been seen, so parse the rest of the line. |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
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parents:
415
diff
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|
4652 void ADLParser::preproc_line(void) { |
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6771309: debugging AD files is difficult without #line directives in generated code
jrose
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415
diff
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4653 int line = get_int(); |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
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415
diff
changeset
|
4654 skipws_no_preproc(); |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
4655 const char* file = NULL; |
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6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
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|
4656 if (_curchar == '"') { |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
4657 next_char(); // Move past the initial '"' |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
4658 file = _ptr; |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
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415
diff
changeset
|
4659 while (true) { |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
4660 if (_curchar == '\n') { |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
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diff
changeset
|
4661 parse_err(SYNERR, "missing '\"' at end of #line directive"); |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
4662 return; |
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6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
4663 } |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
4664 if (_curchar == '"') { |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
4665 *_ptr = '\0'; // Terminate the string |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
4666 next_char(); |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
4667 skipws_no_preproc(); |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
4668 break; |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
4669 } |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
4670 next_char(); |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
4671 } |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
415
diff
changeset
|
4672 } |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
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diff
changeset
|
4673 ensure_end_of_line(); |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
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|
4674 if (file != NULL) |
284d0af00d53
6771309: debugging AD files is difficult without #line directives in generated code
jrose
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changeset
|
4675 _AD._ADL_file._name = file; |
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6771309: debugging AD files is difficult without #line directives in generated code
jrose
parents:
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diff
changeset
|
4676 _buf.set_linenum(line); |
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6771309: debugging AD files is difficult without #line directives in generated code
jrose
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changeset
|
4677 } |
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6771309: debugging AD files is difficult without #line directives in generated code
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diff
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|
4678 |
0 | 4679 //------------------------------preproc_define--------------------------------- |
4680 // A "#define" keyword has been seen, so parse the rest of the line. | |
4681 void ADLParser::preproc_define(void) { | |
4682 char* flag = get_ident_no_preproc(); | |
4683 skipws_no_preproc(); | |
4684 // only #define x y is supported for now | |
4685 char* def = get_ident_no_preproc(); | |
4686 _AD.set_preproc_def(flag, def); | |
4687 skipws_no_preproc(); | |
4688 if (_curchar != '\n') { | |
4689 parse_err(SYNERR, "non-identifier in preprocessor definition\n"); | |
4690 } | |
4691 } | |
4692 | |
4693 //------------------------------preproc_undef---------------------------------- | |
4694 // An "#undef" keyword has been seen, so parse the rest of the line. | |
4695 void ADLParser::preproc_undef(void) { | |
4696 char* flag = get_ident_no_preproc(); | |
4697 skipws_no_preproc(); | |
4698 ensure_end_of_line(); | |
4699 _AD.set_preproc_def(flag, NULL); | |
4700 } | |
4701 | |
4702 | |
4703 | |
4704 //------------------------------parse_err-------------------------------------- | |
4705 // Issue a parser error message, and skip to the end of the current line | |
4706 void ADLParser::parse_err(int flag, const char *fmt, ...) { | |
4707 va_list args; | |
4708 | |
4709 va_start(args, fmt); | |
4710 if (flag == 1) | |
415
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
|
4711 _AD._syntax_errs += _AD.emit_msg(0, flag, linenum(), fmt, args); |
0 | 4712 else if (flag == 2) |
415
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
|
4713 _AD._semantic_errs += _AD.emit_msg(0, flag, linenum(), fmt, args); |
0 | 4714 else |
415
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
|
4715 _AD._warnings += _AD.emit_msg(0, flag, linenum(), fmt, args); |
0 | 4716 |
4717 int error_char = _curchar; | |
4718 char* error_ptr = _ptr+1; | |
4719 for(;*_ptr != '\n'; _ptr++) ; // Skip to the end of the current line | |
4720 _curchar = '\n'; | |
4721 va_end(args); | |
4722 _AD._no_output = 1; | |
4723 | |
4724 if (flag == 1) { | |
4725 char* error_tail = strchr(error_ptr, '\n'); | |
4726 char tem = *error_ptr; | |
4727 error_ptr[-1] = '\0'; | |
4728 char* error_head = error_ptr-1; | |
4729 while (error_head > _curline && *error_head) --error_head; | |
4730 if (error_tail) *error_tail = '\0'; | |
4731 fprintf(stderr, "Error Context: %s>>>%c<<<%s\n", | |
4732 error_head, error_char, error_ptr); | |
4733 if (error_tail) *error_tail = '\n'; | |
4734 error_ptr[-1] = tem; | |
4735 } | |
4736 } | |
4737 | |
4738 //---------------------------ensure_start_of_line------------------------------ | |
4739 // A preprocessor directive has been encountered. Be sure it has fallen at | |
605 | 4740 // the beginning of a line, or else report an error. |
0 | 4741 void ADLParser::ensure_start_of_line(void) { |
475
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6771309: debugging AD files is difficult without #line directives in generated code
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|
4742 if (_curchar == '\n') { next_line(); return; } |
0 | 4743 assert( _ptr >= _curline && _ptr < _curline+strlen(_curline), |
4744 "Must be able to find which line we are in" ); | |
4745 | |
4746 for (char *s = _curline; s < _ptr; s++) { | |
4747 if (*s > ' ') { | |
4748 parse_err(SYNERR, "'%c' must be at beginning of line\n", _curchar); | |
4749 break; | |
4750 } | |
4751 } | |
4752 } | |
4753 | |
4754 //---------------------------ensure_end_of_line-------------------------------- | |
4755 // A preprocessor directive has been parsed. Be sure there is no trailing | |
4756 // garbage at the end of this line. Set the scan point to the beginning of | |
4757 // the next line. | |
4758 void ADLParser::ensure_end_of_line(void) { | |
4759 skipws_no_preproc(); | |
4760 if (_curchar != '\n' && _curchar != '\0') { | |
4761 parse_err(SYNERR, "garbage char '%c' at end of line\n", _curchar); | |
4762 } else { | |
4763 next_char_or_line(); | |
4764 } | |
4765 } | |
4766 | |
4767 //---------------------------handle_preproc------------------------------------ | |
4768 // The '#' character introducing a preprocessor directive has been found. | |
4769 // Parse the whole directive name (e.g., #define, #endif) and take appropriate | |
4770 // action. If we are in an "untaken" span of text, simply keep track of | |
4771 // #ifdef nesting structure, so we can find out when to start taking text | |
4772 // again. (In this state, we "sort of support" C's #if directives, enough | |
4773 // to disregard their associated #else and #endif lines.) If we are in a | |
4774 // "taken" span of text, there are two cases: "#define" and "#undef" | |
4775 // directives are preserved and passed up to the caller, which eventually | |
4776 // passes control to the top-level parser loop, which handles #define and | |
4777 // #undef directly. (This prevents these directives from occurring in | |
4778 // arbitrary positions in the AD file--we require better structure than C.) | |
4779 // In the other case, and #ifdef, #ifndef, #else, or #endif is silently | |
4780 // processed as whitespace, with the "taken" state of the text correctly | |
4781 // updated. This routine returns "false" exactly in the case of a "taken" | |
4782 // #define or #undef, which tells the caller that a preprocessor token | |
4783 // has appeared which must be handled explicitly by the parse loop. | |
4784 bool ADLParser::handle_preproc_token() { | |
4785 assert(*_ptr == '#', "must be at start of preproc"); | |
4786 ensure_start_of_line(); | |
4787 next_char(); | |
4788 skipws_no_preproc(); | |
4789 char* start_ident = _ptr; | |
4790 char* ident = (_curchar == '\n') ? NULL : get_ident_no_preproc(); | |
4791 if (ident == NULL) { | |
4792 parse_err(SYNERR, "expected preprocessor command, got end of line\n"); | |
4793 } else if (!strcmp(ident, "ifdef") || | |
4794 !strcmp(ident, "ifndef")) { | |
4795 char* flag = get_ident_no_preproc(); | |
4796 ensure_end_of_line(); | |
4797 // Test the identifier only if we are already in taken code: | |
4798 bool flag_def = preproc_taken() && (_AD.get_preproc_def(flag) != NULL); | |
4799 bool now_taken = !strcmp(ident, "ifdef") ? flag_def : !flag_def; | |
4800 begin_if_def(now_taken); | |
4801 } else if (!strcmp(ident, "if")) { | |
4802 if (preproc_taken()) | |
4803 parse_err(SYNERR, "unimplemented: #%s %s", ident, _ptr+1); | |
4804 next_line(); | |
4805 // Intelligently skip this nested C preprocessor directive: | |
4806 begin_if_def(true); | |
4807 } else if (!strcmp(ident, "else")) { | |
4808 ensure_end_of_line(); | |
4809 invert_if_def(); | |
4810 } else if (!strcmp(ident, "endif")) { | |
4811 ensure_end_of_line(); | |
4812 end_if_def(); | |
4813 } else if (preproc_taken()) { | |
4814 // pass this token up to the main parser as "#define" or "#undef" | |
4815 _ptr = start_ident; | |
4816 _curchar = *--_ptr; | |
4817 if( _curchar != '#' ) { | |
4818 parse_err(SYNERR, "no space allowed after # in #define or #undef"); | |
4819 assert(_curchar == '#', "no space allowed after # in #define or #undef"); | |
4820 } | |
4821 return false; | |
4822 } | |
4823 return true; | |
4824 } | |
4825 | |
4826 //---------------------------skipws_common------------------------------------- | |
4827 // Skip whitespace, including comments and newlines, while keeping an accurate | |
4828 // line count. | |
4829 // Maybe handle certain preprocessor constructs: #ifdef, #ifndef, #else, #endif | |
4830 void ADLParser::skipws_common(bool do_preproc) { | |
4831 char *start = _ptr; | |
4832 char *next = _ptr + 1; | |
4833 | |
4834 if (*_ptr == '\0') { | |
4835 // Check for string terminator | |
4836 if (_curchar > ' ') return; | |
4837 if (_curchar == '\n') { | |
4838 if (!do_preproc) return; // let caller handle the newline | |
4839 next_line(); | |
4840 _ptr = _curline; next = _ptr + 1; | |
4841 } | |
4842 else if (_curchar == '#' || | |
4843 (_curchar == '/' && (*next == '/' || *next == '*'))) { | |
4844 parse_err(SYNERR, "unimplemented: comment token in a funny place"); | |
4845 } | |
4846 } | |
4847 while(_curline != NULL) { // Check for end of file | |
4848 if (*_ptr == '\n') { // keep proper track of new lines | |
4849 if (!do_preproc) break; // let caller handle the newline | |
4850 next_line(); | |
4851 _ptr = _curline; next = _ptr + 1; | |
4852 } | |
4853 else if ((*_ptr == '/') && (*next == '/')) // C++ comment | |
4854 do { _ptr++; next++; } while(*_ptr != '\n'); // So go to end of line | |
4855 else if ((*_ptr == '/') && (*next == '*')) { // C comment | |
4856 _ptr++; next++; | |
4857 do { | |
4858 _ptr++; next++; | |
4859 if (*_ptr == '\n') { // keep proper track of new lines | |
4860 next_line(); // skip newlines within comments | |
4861 if (_curline == NULL) { // check for end of file | |
4862 parse_err(SYNERR, "end-of-file detected inside comment\n"); | |
4863 break; | |
4864 } | |
4865 _ptr = _curline; next = _ptr + 1; | |
4866 } | |
4867 } while(!((*_ptr == '*') && (*next == '/'))); // Go to end of comment | |
4868 _ptr = ++next; next++; // increment _ptr past comment end | |
4869 } | |
4870 else if (do_preproc && *_ptr == '#') { | |
4871 // Note that this calls skipws_common(false) recursively! | |
4872 bool preproc_handled = handle_preproc_token(); | |
4873 if (!preproc_handled) { | |
4874 if (preproc_taken()) { | |
4875 return; // short circuit | |
4876 } | |
4877 ++_ptr; // skip the preprocessor character | |
4878 } | |
4879 next = _ptr+1; | |
4880 } else if(*_ptr > ' ' && !(do_preproc && !preproc_taken())) { | |
4881 break; | |
4882 } | |
4883 else if (*_ptr == '"' || *_ptr == '\'') { | |
4884 assert(do_preproc, "only skip strings if doing preproc"); | |
4885 // skip untaken quoted string | |
4886 int qchar = *_ptr; | |
4887 while (true) { | |
4888 ++_ptr; | |
4889 if (*_ptr == qchar) { ++_ptr; break; } | |
4890 if (*_ptr == '\\') ++_ptr; | |
4891 if (*_ptr == '\n' || *_ptr == '\0') { | |
4892 parse_err(SYNERR, "newline in string"); | |
4893 break; | |
4894 } | |
4895 } | |
4896 next = _ptr + 1; | |
4897 } | |
4898 else { ++_ptr; ++next; } | |
4899 } | |
4900 if( _curline != NULL ) // at end of file _curchar isn't valid | |
4901 _curchar = *_ptr; // reset _curchar to maintain invariant | |
4902 } | |
4903 | |
4904 //---------------------------cur_char----------------------------------------- | |
4905 char ADLParser::cur_char() { | |
4906 return (_curchar); | |
4907 } | |
4908 | |
4909 //---------------------------next_char----------------------------------------- | |
4910 void ADLParser::next_char() { | |
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4911 if (_curchar == '\n') parse_err(WARN, "must call next_line!"); |
0 | 4912 _curchar = *++_ptr; |
4913 // if ( _curchar == '\n' ) { | |
4914 // next_line(); | |
4915 // } | |
4916 } | |
4917 | |
4918 //---------------------------next_char_or_line--------------------------------- | |
4919 void ADLParser::next_char_or_line() { | |
4920 if ( _curchar != '\n' ) { | |
4921 _curchar = *++_ptr; | |
4922 } else { | |
4923 next_line(); | |
4924 _ptr = _curline; | |
4925 _curchar = *_ptr; // maintain invariant | |
4926 } | |
4927 } | |
4928 | |
4929 //---------------------------next_line----------------------------------------- | |
4930 void ADLParser::next_line() { | |
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4931 _curline = _buf.get_line(); |
475
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4932 _curchar = ' '; |
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4933 } |
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4934 |
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4935 //------------------------get_line_string-------------------------------------- |
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4936 // Prepended location descriptor, for debugging. |
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4937 // Must return a malloced string (that can be freed if desired). |
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4938 char* ADLParser::get_line_string(int linenum) { |
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4939 const char* file = _AD._ADL_file._name; |
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4940 int line = linenum ? linenum : this->linenum(); |
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4941 char* location = (char *)malloc(strlen(file) + 100); |
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4942 sprintf(location, "\n#line %d \"%s\"\n", line, file); |
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4943 return location; |
0 | 4944 } |
4945 | |
4946 //-------------------------is_literal_constant--------------------------------- | |
4947 bool ADLParser::is_literal_constant(const char *param) { | |
4948 if (param[0] == 0) return false; // null string | |
4949 if (param[0] == '(') return true; // parenthesized expression | |
4950 if (param[0] == '0' && (param[1] == 'x' || param[1] == 'X')) { | |
4951 // Make sure it's a hex constant. | |
4952 int i = 2; | |
4953 do { | |
4954 if( !ADLParser::is_hex_digit(*(param+i)) ) return false; | |
4955 ++i; | |
4956 } while( *(param+i) != 0 ); | |
4957 return true; | |
4958 } | |
4959 return false; | |
4960 } | |
4961 | |
4962 //---------------------------is_hex_digit-------------------------------------- | |
4963 bool ADLParser::is_hex_digit(char digit) { | |
4964 return ((digit >= '0') && (digit <= '9')) | |
4965 ||((digit >= 'a') && (digit <= 'f')) | |
4966 ||((digit >= 'A') && (digit <= 'F')); | |
4967 } | |
4968 | |
4969 //---------------------------is_int_token-------------------------------------- | |
4970 bool ADLParser::is_int_token(const char* token, int& intval) { | |
4971 const char* cp = token; | |
4972 while (*cp != '\0' && *cp <= ' ') cp++; | |
4973 if (*cp == '-') cp++; | |
4974 int ndigit = 0; | |
4975 while (*cp >= '0' && *cp <= '9') { cp++; ndigit++; } | |
4976 while (*cp != '\0' && *cp <= ' ') cp++; | |
4977 if (ndigit == 0 || *cp != '\0') { | |
4978 return false; | |
4979 } | |
4980 intval = atoi(token); | |
4981 return true; | |
4982 } | |
4983 | |
475
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4984 static const char* skip_expr_ws(const char* str) { |
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4985 const char * cp = str; |
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4986 while (cp[0]) { |
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4987 if (cp[0] <= ' ') { |
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4988 ++cp; |
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4989 } else if (cp[0] == '#') { |
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4990 ++cp; |
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4991 while (cp[0] == ' ') ++cp; |
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4992 assert(0 == strncmp(cp, "line", 4), "must be a #line directive"); |
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4993 const char* eol = strchr(cp, '\n'); |
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4994 assert(eol != NULL, "must find end of line"); |
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4995 if (eol == NULL) eol = cp + strlen(cp); |
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4996 cp = eol; |
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4997 } else { |
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4998 break; |
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4999 } |
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5000 } |
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5001 return cp; |
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5002 } |
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5003 |
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5004 //-----------------------equivalent_expressions-------------------------------- |
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5005 bool ADLParser::equivalent_expressions(const char* str1, const char* str2) { |
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5006 if (str1 == str2) |
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5007 return true; |
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5008 else if (str1 == NULL || str2 == NULL) |
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5009 return false; |
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5010 const char* cp1 = str1; |
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5011 const char* cp2 = str2; |
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5012 char in_quote = '\0'; |
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5013 while (cp1[0] && cp2[0]) { |
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5014 if (!in_quote) { |
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5015 // skip spaces and/or cpp directives |
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5016 const char* cp1a = skip_expr_ws(cp1); |
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5017 const char* cp2a = skip_expr_ws(cp2); |
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5018 if (cp1a > cp1 && cp2a > cp2) { |
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5019 cp1 = cp1a; cp2 = cp2a; |
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5020 continue; |
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5021 } |
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5022 if (cp1a > cp1 || cp2a > cp2) break; // fail |
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5023 } |
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5024 // match one non-space char |
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5025 if (cp1[0] != cp2[0]) break; // fail |
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5026 char ch = cp1[0]; |
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5027 cp1++; cp2++; |
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5028 // watch for quotes |
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5029 if (in_quote && ch == '\\') { |
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5030 if (cp1[0] != cp2[0]) break; // fail |
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5031 if (!cp1[0]) break; |
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5032 cp1++; cp2++; |
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5033 } |
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5034 if (in_quote && ch == in_quote) { |
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5035 in_quote = '\0'; |
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5036 } else if (!in_quote && (ch == '"' || ch == '\'')) { |
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5037 in_quote = ch; |
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5038 } |
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5039 } |
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5040 return (!cp1[0] && !cp2[0]); |
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5041 } |
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5042 |
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5043 |
0 | 5044 //-------------------------------trim------------------------------------------ |
5045 void ADLParser::trim(char* &token) { | |
5046 while (*token <= ' ') token++; | |
5047 char* end = token + strlen(token); | |
5048 while (end > token && *(end-1) <= ' ') --end; | |
5049 *end = '\0'; | |
5050 } |