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src/share/vm/adlc/adlparse.cpp@2f644f85485d
src/share/vm/adlc/adlparse.cpp
Fri, 03 Dec 2010 01:34:31 -0800
- author
- twisti
- date
- Fri, 03 Dec 2010 01:34:31 -0800
- changeset 2350
- 2f644f85485d
- parent 2314
- f95d63e2154a
- child 2990
- fe240d87c6ec
- permissions
- -rw-r--r--
6961690: load oops from constant table on SPARC
Summary: oops should be loaded from the constant table of an nmethod instead of materializing them with a long code sequence.
Reviewed-by: never, kvn
1 /*
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 // ADLPARSE.CPP - Architecture Description Language Parser
26 // Authors: Chris Vick and Mike Paleczny
27 #include "adlc.hpp"
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
38 _preproc_depth = 0;
39 _preproc_not_taken = 0;
41 // Delimit command-line definitions from in-file definitions:
42 _AD._preproc_list.add_signal();
43 }
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");
78 _AD._TotalLines += linenum()-1; // -1 for overshoot in "nextline" routine
80 // Write out information we have stored
81 // // UNIXism == fsync(stderr);
82 }
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;
90 // Iterate over the lines in the file buffer parsing Level 1 objects
91 for( next_line(); _curline != NULL; next_line()) {
92 _ptr = _curline; // Reset ptr to start of new line
93 skipws(); // Skip any leading whitespace
94 ident = get_ident(); // Get first token
95 if (ident == NULL) { // Empty line
96 continue; // Get the next line
97 }
98 if (!strcmp(ident, "instruct")) instr_parse();
99 else if (!strcmp(ident, "operand")) oper_parse();
100 else if (!strcmp(ident, "opclass")) opclass_parse();
101 else if (!strcmp(ident, "ins_attrib")) ins_attr_parse();
102 else if (!strcmp(ident, "op_attrib")) op_attr_parse();
103 else if (!strcmp(ident, "source")) source_parse();
104 else if (!strcmp(ident, "source_hpp")) source_hpp_parse();
105 else if (!strcmp(ident, "register")) reg_parse();
106 else if (!strcmp(ident, "frame")) frame_parse();
107 else if (!strcmp(ident, "encode")) encode_parse();
108 else if (!strcmp(ident, "pipeline")) pipe_parse();
109 else if (!strcmp(ident, "definitions")) definitions_parse();
110 else if (!strcmp(ident, "peephole")) peep_parse();
111 else if (!strcmp(ident, "#line")) preproc_line();
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 }
119 // Done with parsing, check consistency.
121 if (_preproc_depth != 0) {
122 parse_err(SYNERR, "End of file inside #ifdef");
123 }
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 }
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;
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
151 instr->_linenum = linenum();
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);
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 }
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();
225 else if (!strcmp(ident, "constraint")) {
226 parse_err(SYNERR, "Instructions do not specify a constraint\n");
227 }
228 else if (!strcmp(ident, "construct")) {
229 parse_err(SYNERR, "Instructions do not specify a construct\n");
230 }
231 else if (!strcmp(ident, "format")) instr->_format = format_parse();
232 else if (!strcmp(ident, "interface")) {
233 parse_err(SYNERR, "Instructions do not specify an interface\n");
234 }
235 else if (!strcmp(ident, "ins_pipe")) ins_pipe_parse(*instr);
236 else { // Done with staticly defined parts of instruction definition
237 // Check identifier to see if it is the name of an attribute
238 const Form *form = _globalNames[ident];
239 AttributeForm *attr = form ? form->is_attribute() : NULL;
240 if( attr && (attr->_atype == INS_ATTR) ) {
241 // Insert the new attribute into the linked list.
242 Attribute *temp = attr_parse(ident);
243 temp->_next = instr->_attribs;
244 instr->_attribs = temp;
245 } else {
246 parse_err(SYNERR, "expected one of:\n predicate, match, encode, or the name of an instruction attribute at %s\n", ident);
247 }
248 }
249 skipws();
250 } while(_curchar != '%');
251 next_char();
252 if (_curchar != '}') {
253 parse_err(SYNERR, "missing '%}' in instruction definition\n");
254 return;
255 }
256 // Check for "Set" form of chain rule
257 adjust_set_rule(instr);
258 if (_AD._pipeline ) {
259 if( instr->expands() ) {
260 if( instr->_ins_pipe )
261 parse_err(WARN, "ins_pipe and expand rule both specified for instruction \"%s\"; ins_pipe will be unused\n", instr->_ident);
262 } else {
263 if( !instr->_ins_pipe )
264 parse_err(WARN, "No ins_pipe specified for instruction \"%s\"\n", instr->_ident);
265 }
266 }
267 // Add instruction to tail of instruction list
268 _AD.addForm(instr);
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 }
291 //------------------------------matchrule_clone_and_swap-----------------------
292 // Check for commutative operations with subtree operands,
293 // create clones and swap operands.
294 void ADLParser::matchrule_clone_and_swap(MatchRule* rule, const char* instr_ident, int& match_rules_cnt) {
295 // Check for commutative operations with tree operands.
296 int count = 0;
297 rule->count_commutative_op(count);
298 if (count > 0) {
299 // Clone match rule and swap commutative operation's operands.
300 rule->matchrule_swap_commutative_op(instr_ident, count, match_rules_cnt);
301 }
302 }
304 //------------------------------adjust_set_rule--------------------------------
305 // Check for "Set" form of chain rule
306 void ADLParser::adjust_set_rule(InstructForm *instr) {
307 if (instr->_matrule == NULL || instr->_matrule->_rChild == NULL) return;
308 const char *rch = instr->_matrule->_rChild->_opType;
309 const Form *frm = _globalNames[rch];
310 if( (! strcmp(instr->_matrule->_opType,"Set")) &&
311 frm && frm->is_operand() && (! frm->ideal_only()) ) {
312 // Previous implementation, which missed leaP*, but worked for loadCon*
313 unsigned position = 0;
314 const char *result = NULL;
315 const char *name = NULL;
316 const char *optype = NULL;
317 MatchNode *right = instr->_matrule->_rChild;
318 if (right->base_operand(position, _globalNames, result, name, optype)) {
319 position = 1;
320 const char *result2 = NULL;
321 const char *name2 = NULL;
322 const char *optype2 = NULL;
323 // Can not have additional base operands in right side of match!
324 if ( ! right->base_operand( position, _globalNames, result2, name2, optype2) ) {
325 if (instr->_predicate != NULL)
326 parse_err(SYNERR, "ADLC does not support instruction chain rules with predicates");
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 }
395 //------------------------------oper_parse-------------------------------------
396 void ADLParser::oper_parse(void) {
397 char *ident;
398 OperandForm *oper;
399 AttributeForm *attr;
400 MatchRule *rule;
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
407 oper->_linenum = linenum();
408 _globalNames.Insert(ident, oper); // Add name to the name table
410 // Debugging Stuff
411 if (_AD._adl_debug > 1) fprintf(stderr,"Parsing Operand Form %s\n", ident);
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 }
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;
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
504 // Debugging Stuff
505 if (_AD._adl_debug > 1)
506 fprintf(stderr,"Parsing Operand Class Form %s\n", ident);
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 }
550 //------------------------------ins_attr_parse---------------------------------
551 void ADLParser::ins_attr_parse(void) {
552 char *ident;
553 char *aexpr;
554 AttributeForm *attrib;
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);
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);
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 ';'
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 }
585 //------------------------------op_attr_parse----------------------------------
586 void ADLParser::op_attr_parse(void) {
587 char *ident;
588 char *aexpr;
589 AttributeForm *attrib;
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);
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);
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 ';'
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 }
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 }
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
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 }
663 // Check for value of int_def dname( integer_value [, string_expression ] )
664 skipws();
665 if (_curchar == '(') {
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();
680 // Check for description
681 if (_curchar == ',') {
682 next_char(); // skip ','
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 }
692 if (_curchar != ')') {
693 parse_err(SYNERR, "missing ')' in register definition statement\n");
694 return;
695 }
696 next_char();
697 }
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 ';'
707 // Debug Stuff
708 if (_AD._adl_debug > 1) {
709 fprintf(stderr,"int_def: %s ( %s, %s )\n", name,
710 (value), (description ? description : ""));
711 }
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 }
721 return;
722 }
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
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);
738 source = new SourceForm(rule); // Build new Source object
739 _AD.addForm(source);
740 // skipws();
741 }
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
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);
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 }
772 //------------------------------reg_parse--------------------------------------
773 void ADLParser::reg_parse(void) {
775 // Create the RegisterForm for the architecture description.
776 RegisterForm *regBlock = new RegisterForm(); // Build new Source object
777 regBlock->_linenum = linenum();
778 _AD.addForm(regBlock);
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 }
790 if (strcmp(token,"reg_def")==0) { reg_def_parse(); }
791 else if (strcmp(token,"reg_class")==0) { reg_class_parse(); }
792 else if (strcmp(token,"alloc_class")==0) { alloc_class_parse(); }
793 else if (strcmp(token,"#define")==0) { preproc_define(); }
794 else { parse_err(SYNERR, "bad token %s inside register block.\n", token); break; }
795 skipws();
796 }
797 }
798 else {
799 parse_err(SYNERR, "Missing %c{ ... %c} block after register keyword.\n",'%','%');
800 return;
801 }
803 // Add reg_class spill_regs
804 regBlock->addSpillRegClass();
805 }
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
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 }
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 }
839 //------------------------------enc_class_parse--------------------------------
840 void ADLParser::enc_class_parse(void) {
841 char *ec_name; // Name of encoding class being defined
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 }
851 EncClass *encoding = _AD._encode->add_EncClass(ec_name);
852 encoding->_linenum = linenum();
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
861 next_char(); // skip open paren & comma characters
862 skipws();
863 if (_curchar == ')') break;
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 }
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 }
880 // Record parameter type and name
881 encoding->add_parameter( pType, pName );
883 skipws();
884 } while(_curchar == ',');
886 if (_curchar != ')') parse_err(SYNERR, "missing ')'\n");
887 else {
888 next_char(); // Skip ')'
889 }
890 } // Done with parameter list
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 '{'
901 enc_class_parse_block(encoding, ec_name);
902 }
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) {
909 encoding->add_code(get_line_string());
910 }
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 '$'
915 while ( (_curchar != '%') && (*(_ptr+1) != '}') ) {
917 // (1)
918 // Check if there is a string to pass through to output
919 char *start = _ptr; // Record start of the next string
920 while ((_curchar != '$') && ((_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 }
935 // (2)
936 // If we are at a replacement variable,
937 // copy it and record in EncClass
938 if (_curchar == '$') {
939 // Found replacement Variable
940 char* rep_var = get_rep_var_ident_dup();
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 '}'
948 skipws();
950 if (_AD._adlocation_debug) {
951 encoding->add_code(end_line_marker());
952 }
954 // Debug Stuff
955 if (_AD._adl_debug > 1) fprintf(stderr,"EncodingClass Form: %s\n", ec_name);
956 }
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
963 skipws(); // Skip leading whitespace
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 }
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 }
1120 // Debug Stuff
1121 if (_AD._adl_debug > 1) fprintf(stderr,"Frame Form: %s\n", desc);
1123 // Create the EncodeForm for the architecture description.
1124 _AD.addForm(frame);
1125 // skipws();
1126 }
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 }
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 }
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 }
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 }
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 }
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 }
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 }
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 }
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 }
1207 trim(token);
1208 return token;
1209 }
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; }
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; }
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 }
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;
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 }
1275 //------------------------------calling_convention_parse-----------------------
1276 char *ADLParser::calling_convention_parse() {
1277 char *desc = NULL; // String representation of calling_convention
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 }
1286 //------------------------------return_value_parse-----------------------------
1287 char *ADLParser::return_value_parse() {
1288 char *desc = NULL; // String representation of calling_convention
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 }
1297 //------------------------------ins_pipe_parse---------------------------------
1298 void ADLParser::ins_pipe_parse(InstructForm &instr) {
1299 char * ident;
1301 skipws();
1302 if ( _curchar != '(' ) { // Check for delimiter
1303 parse_err(SYNERR, "missing \"(\" in ins_pipe definition\n");
1304 return;
1305 }
1307 next_char();
1308 ident = get_ident(); // Grab next identifier
1310 if (ident == NULL) {
1311 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar);
1312 return;
1313 }
1315 skipws();
1316 if ( _curchar != ')' ) { // Check for delimiter
1317 parse_err(SYNERR, "missing \")\" in ins_pipe definition\n");
1318 return;
1319 }
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
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 }
1334 // Add this instruction to the list in the pipeline class
1335 _AD._pipeline->_classdict[ident]->is_pipeclass()->_instructs.addName(instr._ident);
1337 // Set the name of the pipeline class in the instruction
1338 instr._ins_pipe = ident;
1339 return;
1340 }
1342 //------------------------------pipe_parse-------------------------------------
1343 void ADLParser::pipe_parse(void) {
1344 PipelineForm *pipeline; // Encode class for instruction/operand
1345 char * ident;
1347 pipeline = new PipelineForm(); // Build new Source object
1348 _AD.addForm(pipeline);
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();
1376 char *node_class = get_ident();
1377 if (node_class == NULL) {
1378 parse_err(SYNERR, "expected identifier, found \"%c\"\n", _curchar);
1379 return;
1380 }
1382 skipws();
1383 if (_curchar != ',' && _curchar != '=') {
1384 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar);
1385 break;
1386 }
1387 next_char(); skipws();
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
1400 skipws();
1401 if ( (_curchar != '%')
1402 || ( next_char(), (_curchar != '}')) ) {
1403 parse_err(SYNERR, "expected '%%}', found \"%c\"\n", _curchar);
1404 }
1405 next_char();
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 }
1413 // Add this machine node to the list in the pipeline class
1414 _AD._pipeline->_classdict[pipe_class]->is_pipeclass()->_instructs.addName(node_class);
1416 MachNodeForm *machnode = new MachNodeForm(node_class); // Create new machnode form
1417 machnode->_machnode_pipe = pipe_class;
1419 _AD.addForm(machnode);
1420 }
1421 else if (!strcmp(ident, "attributes")) {
1422 bool vsi_seen = false, bhds_seen = false;
1424 skipws();
1425 if ( (_curchar != '%')
1426 || ( next_char(), (_curchar != '{')) ) {
1427 parse_err(SYNERR, "expected '%{'\n");
1428 return;
1429 }
1430 next_char(); skipws();
1432 while (_curchar != '%') {
1433 ident = get_ident();
1434 if (ident == NULL)
1435 break;
1437 if (!strcmp(ident, "variable_size_instructions")) {
1438 skipws();
1439 if (_curchar == ';') {
1440 next_char(); skipws();
1441 }
1443 pipeline->_variableSizeInstrs = true;
1444 vsi_seen = true;
1445 continue;
1446 }
1448 if (!strcmp(ident, "fixed_size_instructions")) {
1449 skipws();
1450 if (_curchar == ';') {
1451 next_char(); skipws();
1452 }
1454 pipeline->_variableSizeInstrs = false;
1455 vsi_seen = true;
1456 continue;
1457 }
1459 if (!strcmp(ident, "branch_has_delay_slot")) {
1460 skipws();
1461 if (_curchar == ';') {
1462 next_char(); skipws();
1463 }
1465 pipeline->_branchHasDelaySlot = true;
1466 bhds_seen = true;
1467 continue;
1468 }
1470 if (!strcmp(ident, "max_instructions_per_bundle")) {
1471 skipws();
1472 if (_curchar != '=') {
1473 parse_err(SYNERR, "expected `=`\n");
1474 break;
1475 }
1477 next_char(); skipws();
1478 pipeline->_maxInstrsPerBundle = get_int();
1479 skipws();
1481 if (_curchar == ';') {
1482 next_char(); skipws();
1483 }
1485 continue;
1486 }
1488 if (!strcmp(ident, "max_bundles_per_cycle")) {
1489 skipws();
1490 if (_curchar != '=') {
1491 parse_err(SYNERR, "expected `=`\n");
1492 break;
1493 }
1495 next_char(); skipws();
1496 pipeline->_maxBundlesPerCycle = get_int();
1497 skipws();
1499 if (_curchar == ';') {
1500 next_char(); skipws();
1501 }
1503 continue;
1504 }
1506 if (!strcmp(ident, "instruction_unit_size")) {
1507 skipws();
1508 if (_curchar != '=') {
1509 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar);
1510 break;
1511 }
1513 next_char(); skipws();
1514 pipeline->_instrUnitSize = get_int();
1515 skipws();
1517 if (_curchar == ';') {
1518 next_char(); skipws();
1519 }
1521 continue;
1522 }
1524 if (!strcmp(ident, "bundle_unit_size")) {
1525 skipws();
1526 if (_curchar != '=') {
1527 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar);
1528 break;
1529 }
1531 next_char(); skipws();
1532 pipeline->_bundleUnitSize = get_int();
1533 skipws();
1535 if (_curchar == ';') {
1536 next_char(); skipws();
1537 }
1539 continue;
1540 }
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 }
1549 next_char(); skipws();
1550 pipeline->_instrFetchUnitSize = get_int();
1551 skipws();
1553 if (_curchar == ';') {
1554 next_char(); skipws();
1555 }
1557 continue;
1558 }
1560 if (!strcmp(ident, "instruction_fetch_units")) {
1561 skipws();
1562 if (_curchar != '=') {
1563 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar);
1564 break;
1565 }
1567 next_char(); skipws();
1568 pipeline->_instrFetchUnits = get_int();
1569 skipws();
1571 if (_curchar == ';') {
1572 next_char(); skipws();
1573 }
1575 continue;
1576 }
1578 if (!strcmp(ident, "nops")) {
1579 skipws();
1580 if (_curchar != '(') {
1581 parse_err(SYNERR, "expected `(`, found '%c'\n", _curchar);
1582 break;
1583 }
1585 next_char(); skipws();
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 }
1594 pipeline->_noplist.addName(ident);
1595 pipeline->_nopcnt++;
1596 skipws();
1598 if (_curchar == ',') {
1599 next_char(); skipws();
1600 }
1601 }
1603 next_char(); skipws();
1605 if (_curchar == ';') {
1606 next_char(); skipws();
1607 }
1609 continue;
1610 }
1612 parse_err(SYNERR, "unknown specifier \"%s\"\n", ident);
1613 }
1615 if ( (_curchar != '%')
1616 || ( next_char(), (_curchar != '}')) ) {
1617 parse_err(SYNERR, "expected '%}', found \"%c\"\n", _curchar);
1618 }
1619 next_char(); skipws();
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 != '%');
1641 next_char();
1642 if (_curchar != '}') {
1643 parse_err(SYNERR, "missing \"%}\" in pipeline definition\n");
1644 return;
1645 }
1647 next_char();
1648 }
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;
1658 skipws(); // Skip leading whitespace
1660 if (_curchar != '(') {
1661 parse_err(SYNERR, "missing \"(\" in resource definition\n");
1662 return;
1663 }
1665 do {
1666 next_char(); // Skip "(" or ","
1667 ident = get_ident(); // Grab next identifier
1669 if (ident == NULL) {
1670 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
1671 return;
1672 }
1673 skipws();
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();
1692 skipws();
1693 while (_curchar == '|') {
1694 next_char(); skipws();
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 }
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 }
1708 mask |= resource->mask();
1709 skipws();
1710 }
1711 }
1713 resource = new ResourceForm(mask);
1715 pipeline._resdict.Insert(ident, resource);
1716 pipeline._reslist.addName(ident);
1717 } while (_curchar == ',');
1719 if (_curchar != ')') {
1720 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
1721 return;
1722 }
1724 next_char(); // Skip ")"
1725 if (_curchar == ';')
1726 next_char(); // Skip ";"
1727 }
1729 //------------------------------resource_parse----------------------------
1730 void ADLParser::pipe_desc_parse(PipelineForm &pipeline) {
1731 char * ident;
1733 skipws(); // Skip leading whitespace
1735 if (_curchar != '(') {
1736 parse_err(SYNERR, "missing \"(\" in pipe_desc definition\n");
1737 return;
1738 }
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 }
1748 // Add the name to the list
1749 pipeline._stages.addName(ident);
1750 pipeline._stagecnt++;
1752 skipws();
1753 } while (_curchar == ',');
1755 if (_curchar != ')') {
1756 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
1757 return;
1758 }
1760 next_char(); // Skip ")"
1761 if (_curchar == ';')
1762 next_char(); // Skip ";"
1763 }
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;
1775 skipws(); // Skip leading whitespace
1777 ident = get_ident(); // Grab next identifier
1779 if (ident == NULL) {
1780 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
1781 return;
1782 }
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);
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();
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();
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 }
1836 pipe_class->setFixedLatency(fixed_latency);
1837 next_char(); skipws();
1838 continue;
1839 }
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 }
1849 pipe_class->setInstructionCount(0);
1850 next_char(); skipws();
1851 continue;
1852 }
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 }
1862 pipe_class->setInstructionCount(1);
1863 pipe_class->setBranchDelay(true);
1864 next_char(); skipws();
1865 continue;
1866 }
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 }
1876 pipe_class->setInstructionCount(1);
1877 next_char(); skipws();
1878 continue;
1879 }
1881 if (!strcmp(ident, "instructions_in_first_bundle") ||
1882 !strcmp(ident, "instruction_count")) {
1883 skipws();
1885 int number_of_instructions = 1;
1887 if (_curchar != '(') {
1888 parse_err(SYNERR, "\"(\" expected at \"%c\"\n", _curchar);
1889 continue;
1890 }
1892 next_char(); skipws();
1893 number_of_instructions = get_int();
1895 skipws();
1896 if (_curchar != ')') {
1897 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
1898 continue;
1899 }
1901 next_char(); skipws();
1902 if (_curchar != ';') {
1903 parse_err(SYNERR, "missing \";\" in latency definition\n");
1904 return;
1905 }
1907 pipe_class->setInstructionCount(number_of_instructions);
1908 next_char(); skipws();
1909 continue;
1910 }
1912 if (!strcmp(ident, "multiple_bundles")) {
1913 skipws();
1914 if (_curchar != ';') {
1915 parse_err(SYNERR, "missing \";\" after multiple bundles\n");
1916 return;
1917 }
1919 pipe_class->setMultipleBundles(true);
1920 next_char(); skipws();
1921 continue;
1922 }
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 }
1931 pipe_class->setBranchDelay(true);
1932 next_char(); skipws();
1933 continue;
1934 }
1936 if (!strcmp(ident, "force_serialization")) {
1937 skipws();
1938 if (_curchar != ';') {
1939 parse_err(SYNERR, "missing \";\" after \"force_serialization\"\n");
1940 return;
1941 }
1943 pipe_class->setForceSerialization(true);
1944 next_char(); skipws();
1945 continue;
1946 }
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 }
1955 pipe_class->setMayHaveNoCode(true);
1956 next_char(); skipws();
1957 continue;
1958 }
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 }
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 }
1979 skipws();
1980 if (_curchar != '(') {
1981 parse_err(SYNERR, "\"(\" expected at \"%c\"\n", _curchar);
1982 continue;
1983 }
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 }
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 }
1999 skipws();
2000 if (_curchar != ')') {
2001 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
2002 continue;
2003 }
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 }
2021 PipeClassOperandForm *pipe_operand = new PipeClassOperandForm(stage, is_write, more_instrs);
2022 pipe_class->_localUsage.Insert(ident, pipe_operand);
2024 if (_curchar == '%')
2025 continue;
2027 if (_curchar != ';') {
2028 parse_err(SYNERR, "\";\" expected at \"%c\"\n", _curchar);
2029 continue;
2030 }
2031 next_char(); skipws();
2032 continue;
2033 }
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 }
2050 skipws();
2051 if (_curchar == '(') {
2052 next_char();
2053 cyclecnt = get_int();
2055 skipws();
2056 if (_curchar != ')') {
2057 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
2058 continue;
2059 }
2061 next_char(); skipws();
2062 }
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);
2070 if (_curchar == '%')
2071 continue;
2073 if (_curchar != ';') {
2074 parse_err(SYNERR, "\";\" expected at \"%c\"\n", _curchar);
2075 continue;
2076 }
2077 next_char(); skipws();
2078 continue;
2079 }
2081 parse_err(SYNERR, "resource expected at \"%s\"\n", ident);
2082 return;
2083 } while(_curchar != '%');
2085 next_char();
2086 if (_curchar != '}') {
2087 parse_err(SYNERR, "missing \"%}\" in pipe_class definition\n");
2088 return;
2089 }
2091 next_char();
2092 }
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
2099 skipws(); // Skip leading whitespace
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 }
2134 // ******************** Private Level 2 Parse Functions ********************
2135 //------------------------------constraint_parse------------------------------
2136 Constraint *ADLParser::constraint_parse(void) {
2137 char *func;
2138 char *arg;
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 '('
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();
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 }
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();
2198 // Create new "Constraint"
2199 Constraint *constraint = new Constraint(func,arg);
2200 return constraint;
2201 }
2203 //------------------------------constr_parse-----------------------------------
2204 ConstructRule *ADLParser::construct_parse(void) {
2205 return NULL;
2206 }
2209 //------------------------------reg_def_parse----------------------------------
2210 void ADLParser::reg_def_parse(void) {
2211 char *rname; // Name of register being defined
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 }
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();
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();
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();
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 }
2301 if (_curchar != ')') {
2302 parse_err(SYNERR, "missing ')' in register definition statement\n");
2303 return;
2304 }
2305 next_char();
2306 }
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 ';'
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 }
2322 // Record new register definition.
2323 _AD._register->addRegDef(rname, callconv, c_conv, idealtype, encoding, concrete);
2324 return;
2325 }
2327 //------------------------------reg_class_parse--------------------------------
2328 void ADLParser::reg_class_parse(void) {
2329 char *cname; // Name of register class being defined
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);
2341 RegClass *reg_class = _AD._register->addRegClass(cname);
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);
2355 if (!regDef) {
2356 parse_err(SEMERR, "unknown identifier %s inside reg_class list.\n", rname);
2357 } else {
2358 reg_class->addReg(regDef); // add regDef to regClass
2359 }
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 }
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 ';'
2379 // Check RegClass size, must be <= 32 registers in class.
2381 return;
2382 }
2384 //------------------------------alloc_class_parse------------------------------
2385 void ADLParser::alloc_class_parse(void) {
2386 char *name; // Name of allocation class being defined
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);
2398 AllocClass *alloc_class = _AD._register->addAllocClass(name);
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 {
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 }
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 }
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 ';'
2440 return;
2441 }
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;
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 }
2507 } // end while
2509 assert( false, "ShouldNotReachHere();");
2510 return NULL;
2511 }
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) {
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 '('
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 }
2540 if( _curchar != ')' ) {
2541 parse_err(SYNERR, "missing ')' at end of peepmatch.\n");
2542 return;
2543 }
2544 next_char(); // skip ')'
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 ';'
2554 // Store match into peep, and store peep into instruction
2555 peep.add_match(match);
2556 root->append_peephole(&peep);
2557 }
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) {
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 }
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
2589 int left_inst = get_int();
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();
2599 skipws();
2600 // Collect relational operator
2601 char *relation = get_relation_dup();
2603 skipws();
2604 // Get information on the right instruction and its operand
2605 int right_inst; // Right-instructions's number
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 }
2619 char *right_op = get_ident_dup();
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 );
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 ')'
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 }
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;
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 }
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 }
2685 // Store string representation of rule into replace
2686 PeepReplace *replace = new PeepReplace(str);
2687 replace->add_instruction( inst );
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 }
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 }
2719 // Record this operand's position in peepmatch
2720 replace->add_operand( inst_num, inst_op );
2721 skipws();
2722 }
2724 // Check for the end of operands list
2725 skipws();
2726 assert( _curchar == ')', "While loop should have advanced to ')'.");
2727 next_char(); // Skip ')'
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 ')'
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 ';'
2746 // Store replace into peep
2747 peep.add_replace( replace );
2748 }
2750 //------------------------------pred_parse-------------------------------------
2751 Predicate *ADLParser::pred_parse(void) {
2752 Predicate *predicate; // Predicate class for operand
2753 char *rule = NULL; // String representation of predicate
2755 skipws(); // Skip leading whitespace
2756 int line = linenum();
2757 if ( (rule = get_paren_expr("pred expression", true)) == NULL ) {
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
2769 predicate = new Predicate(rule); // Build new predicate object
2770 skipws();
2771 return predicate;
2772 }
2775 //------------------------------ins_encode_parse_block-------------------------
2776 // Parse the block form of ins_encode. See ins_encode_parse for more details
2777 void ADLParser::ins_encode_parse_block(InstructForm& inst) {
2778 // Create a new encoding name based on the name of the instruction
2779 // definition, which should be unique.
2780 const char* prefix = "__ins_encode_";
2781 char* ec_name = (char*) malloc(strlen(inst._ident) + strlen(prefix) + 1);
2782 sprintf(ec_name, "%s%s", prefix, inst._ident);
2784 assert(_AD._encode->encClass(ec_name) == NULL, "shouldn't already exist");
2785 EncClass* encoding = _AD._encode->add_EncClass(ec_name);
2786 encoding->_linenum = linenum();
2788 // synthesize the arguments list for the enc_class from the
2789 // arguments to the instruct definition.
2790 const char* param = NULL;
2791 inst._parameters.reset();
2792 while ((param = inst._parameters.iter()) != NULL) {
2793 OperandForm* opForm = (OperandForm*) inst._localNames[param];
2794 encoding->add_parameter(opForm->_ident, param);
2795 }
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");
2803 // Parse the following %{ }% block
2804 ins_encode_parse_block_impl(inst, encoding, ec_name);
2806 // Build an encoding rule which invokes the encoding rule we just
2807 // created, passing all arguments that we received.
2808 InsEncode* encrule = new InsEncode(); // Encode class for instruction
2809 NameAndList* params = encrule->add_encode(ec_name);
2810 inst._parameters.reset();
2811 while ((param = inst._parameters.iter()) != NULL) {
2812 params->add_entry(param);
2813 }
2815 // Set encode class of this instruction.
2816 inst._insencode = encrule;
2817 }
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 }
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) != '}')) {
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 != '$') && ((_curchar != '%') || (*(_ptr+1) != '}')) ) {
2836 // If at the start of a comment, skip past it
2837 if( (_curchar == '/') && ((*(_ptr+1) == '/') || (*(_ptr+1) == '*')) ) {
2838 skipws_no_preproc();
2839 } else {
2840 // ELSE advance to the next character, or start of the next line
2841 next_char_or_line();
2842 }
2843 }
2844 // If a string was found, terminate it and record in EncClass
2845 if (start != _ptr) {
2846 *_ptr = '\0'; // Terminate the string
2847 encoding->add_code(start);
2848 }
2850 // (2)
2851 // If we are at a replacement variable,
2852 // copy it and record in EncClass
2853 if (_curchar == '$') {
2854 // Found replacement Variable
2855 char* rep_var = get_rep_var_ident_dup();
2857 // Add flag to _strings list indicating we should check _rep_vars
2858 encoding->add_rep_var(rep_var);
2860 skipws();
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);
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);
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 '}'
2885 skipws();
2887 if (_AD._adlocation_debug) {
2888 encoding->add_code(end_line_marker());
2889 }
2891 // Debug Stuff
2892 if (_AD._adl_debug > 1) fprintf(stderr, "EncodingClass Form: %s\n", ec_name);
2893 }
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.
2916 void ADLParser::ins_encode_parse(InstructForm& inst) {
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 '{'
2926 // Parse the block form of ins_encode
2927 ins_encode_parse_block(inst);
2928 return;
2929 }
2931 parse_err(SYNERR, "missing '%%{' or '(' in ins_encode definition\n");
2932 return;
2933 }
2934 next_char(); // move past '('
2935 skipws();
2937 InsEncode *encrule = new InsEncode(); // Encode class for instruction
2938 encrule->_linenum = linenum();
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");
2945 return;
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 }
2954 // Get list for encode method's parameters
2955 NameAndList *params = encrule->add_encode(ec_name);
2957 // Parse the parameters to this encode method.
2958 skipws();
2959 if ( _curchar == '(' ) {
2960 next_char(); // move past '(' for parameters
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);
2977 return;
2978 }
2979 params->add_entry(param);
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);
2994 return;
2995 }
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);
3002 return;
3003 }
3004 if (_curchar != ')') {
3005 parse_err(SYNERR, "Expected ')' after encode parameters.\n");
3006 return;
3007 }
3008 }
3009 } // WHILE loop collecting parameters
3010 next_char(); // move past ')' at end of parameters
3011 } // done with parameter list for encoding
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);
3023 return;
3024 }
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 // }
3032 } // done parsing ins_encode methods and their parameters
3033 if (_curchar != ')') {
3034 parse_err(SYNERR, "Missing ')' at end of ins_encode description.\n");
3035 return;
3036 }
3037 next_char(); // move past ')'
3038 skipws(); // Skip leading whitespace
3040 if ( _curchar != ';' ) {
3041 parse_err(SYNERR, "Missing ';' at end of ins_encode.\n");
3042 return;
3043 }
3044 next_char(); // move past ';'
3045 skipws(); // be friendly to oper_parse()
3047 // Debug Stuff
3048 if (_AD._adl_debug > 1) fprintf(stderr,"Instruction Encode: %s\n", ec_name);
3050 // Set encode class of this instruction.
3051 inst._insencode = encrule;
3052 }
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);
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();
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 }
3077 // Parse the following ( ) expression.
3078 constant_parse_expression(encoding, ec_name);
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 }
3089 // Set encode class of this instruction.
3090 inst._constant = encrule;
3091 }
3094 //------------------------------constant_parse_expression----------------------
3095 void ADLParser::constant_parse_expression(EncClass* encoding, char* ec_name) {
3096 skipws();
3098 // Prepend location descriptor, for debugging; cf. ADLParser::find_cpp_block
3099 if (_AD._adlocation_debug) {
3100 encoding->add_code(get_line_string());
3101 }
3103 // Start code line.
3104 encoding->add_code(" _constant = C->constant_table().add");
3106 // Parse everything in ( ) expression.
3107 encoding->add_code("(");
3108 next_char(); // Skip '('
3109 int parens_depth = 1;
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 != '$') && (_curchar != '(') && (_curchar != ')')) {
3130 next_char();
3131 }
3132 // If a string was found, terminate it and record in EncClass
3133 if (start != _ptr) {
3134 *_ptr = '\0'; // Terminate the string
3135 encoding->add_code(start);
3136 }
3138 // (2)
3139 // If we are at a replacement variable, copy it and record in EncClass.
3140 if (_curchar == '$') {
3141 // Found replacement Variable
3142 char* rep_var = get_rep_var_ident_dup();
3143 encoding->add_rep_var(rep_var);
3144 }
3145 }
3146 }
3148 // Finish code line.
3149 encoding->add_code(";");
3151 if (_AD._adlocation_debug) {
3152 encoding->add_code(end_line_marker());
3153 }
3155 // Debug Stuff
3156 if (_AD._adl_debug > 1) fprintf(stderr, "EncodingClass Form: %s\n", ec_name);
3157 }
3160 //------------------------------size_parse-----------------------------------
3161 char* ADLParser::size_parse(InstructForm *instr) {
3162 char* sizeOfInstr = NULL;
3164 // Get value of the instruction's size
3165 skipws();
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 }
3174 skipws();
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()
3184 // Debug Stuff
3185 if (_AD._adl_debug > 1) {
3186 if (sizeOfInstr != NULL) {
3187 fprintf(stderr,"size of opcode: %s\n", sizeOfInstr);
3188 }
3189 }
3191 return sizeOfInstr;
3192 }
3195 //------------------------------opcode_parse-----------------------------------
3196 Opcode * ADLParser::opcode_parse(InstructForm *instr) {
3197 char *primary = NULL;
3198 char *secondary = NULL;
3199 char *tertiary = NULL;
3201 char *val = NULL;
3202 Opcode *opcode = NULL;
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()
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 }
3262 // Generate new object and return
3263 opcode = new Opcode(primary, secondary, tertiary);
3264 return opcode;
3265 }
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
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 ')'
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 "%}"
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 ';'
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);
3327 // Create appropriate interface object and return.
3328 return inter;
3329 }
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;
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 '}'
3381 // Construct desired object and return
3382 Interface *inter = new MemInterface(base, index, scale, disp);
3383 return inter;
3384 }
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;
3395 const char *equal_format = "eq";
3396 const char *not_equal_format = "ne";
3397 const char *less_format = "lt";
3398 const char *greater_equal_format = "ge";
3399 const char *less_equal_format = "le";
3400 const char *greater_format = "gt";
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 ) {
3420 equal = interface_field_parse(&equal_format);
3421 }
3422 else if ( strcmp(field,"not_equal") == 0 ) {
3423 not_equal = interface_field_parse(¬_equal_format);
3424 }
3425 else if ( strcmp(field,"less") == 0 ) {
3426 less = interface_field_parse(&less_format);
3427 }
3428 else if ( strcmp(field,"greater_equal") == 0 ) {
3429 greater_equal = interface_field_parse(&greater_equal_format);
3430 }
3431 else if ( strcmp(field,"less_equal") == 0 ) {
3432 less_equal = interface_field_parse(&less_equal_format);
3433 }
3434 else if ( strcmp(field,"greater") == 0 ) {
3435 greater = interface_field_parse(&greater_format);
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 '}'
3449 // Construct desired object and return
3450 Interface *inter = new CondInterface(equal, equal_format,
3451 not_equal, not_equal_format,
3452 less, less_format,
3453 greater_equal, greater_equal_format,
3454 less_equal, less_equal_format,
3455 greater, greater_format);
3456 return inter;
3457 }
3460 //------------------------------interface_field_parse--------------------------
3461 char *ADLParser::interface_field_parse(const char ** format) {
3462 char *iface_field = NULL;
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();
3482 if (format != NULL && _curchar == ',') {
3483 next_char();
3484 skipws();
3485 if (_curchar != '"') {
3486 parse_err(SYNERR, "Missing '\"' in field format .\n");
3487 return NULL;
3488 }
3489 next_char();
3490 char *start = _ptr; // Record start of the next string
3491 while ((_curchar != '"') && (_curchar != '%') && (_curchar != '\n')) {
3492 if (_curchar == '\\') next_char(); // superquote
3493 if (_curchar == '\n') parse_err(SYNERR, "newline in string"); // unimplemented!
3494 next_char();
3495 }
3496 if (_curchar != '"') {
3497 parse_err(SYNERR, "Missing '\"' at end of field format .\n");
3498 return NULL;
3499 }
3500 // If a string was found, terminate it and record in FormatRule
3501 if ( start != _ptr ) {
3502 *_ptr = '\0'; // Terminate the string
3503 *format = start;
3504 }
3505 next_char();
3506 skipws();
3507 }
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()
3521 return iface_field;
3522 }
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
3532 // Parse the match rule tree
3533 MatchNode *mnode = matchNode_parse(operands, depth, numleaves, true);
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 }
3554 //------------------------------format_parse-----------------------------------
3555 FormatRule* ADLParser::format_parse(void) {
3556 char *desc = NULL;
3557 FormatRule *format = (new FormatRule(desc));
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 '{'
3569 skipws();
3570 if (_curchar == '$') {
3571 char* ident = get_rep_var_ident();
3572 if (strcmp(ident, "$$template") == 0) return template_parse();
3573 parse_err(SYNERR, "Unknown \"%s\" directive in format", ident);
3574 return NULL;
3575 }
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 }
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 }
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')) {
3600 if (_curchar == '\\') {
3601 next_char(); // superquote
3602 if ((_curchar == '$') || (_curchar == '%'))
3603 // hack to avoid % escapes and warnings about undefined \ escapes
3604 *(_ptr-1) = _curchar;
3605 }
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 }
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 }
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
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
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);
3667 skipws();
3668 return format;
3669 }
3672 //------------------------------template_parse-----------------------------------
3673 FormatRule* ADLParser::template_parse(void) {
3674 char *desc = NULL;
3675 FormatRule *format = (new FormatRule(desc));
3677 skipws();
3678 while ( (_curchar != '%') && (*(_ptr+1) != '}') ) {
3680 // (1)
3681 // Check if there is a string to pass through to output
3682 {
3683 char *start = _ptr; // Record start of the next string
3684 while ((_curchar != '$') && ((_curchar != '%') || (*(_ptr+1) != '}')) ) {
3685 // If at the start of a comment, skip past it
3686 if( (_curchar == '/') && ((*(_ptr+1) == '/') || (*(_ptr+1) == '*')) ) {
3687 skipws_no_preproc();
3688 } else {
3689 // ELSE advance to the next character, or start of the next line
3690 next_char_or_line();
3691 }
3692 }
3693 // If a string was found, terminate it and record in EncClass
3694 if ( start != _ptr ) {
3695 *_ptr = '\0'; // Terminate the string
3696 // Add flag to _strings list indicating we should check _rep_vars
3697 format->_strings.addName(NameList::_signal2);
3698 format->_strings.addName(start);
3699 }
3700 }
3702 // (2)
3703 // If we are at a replacement variable,
3704 // copy it and record in EncClass
3705 if ( _curchar == '$' ) {
3706 // Found replacement Variable
3707 char *rep_var = get_rep_var_ident_dup();
3708 if (strcmp(rep_var, "$emit") == 0) {
3709 // switch to normal format parsing
3710 next_char();
3711 next_char();
3712 skipws();
3713 // Check for the opening '"' inside the format description
3714 if ( _curchar == '"' ) {
3715 next_char(); // Move past the initial '"'
3716 if( _curchar == '"' ) { // Handle empty format string case
3717 *_ptr = '\0'; // Terminate empty string
3718 format->_strings.addName(_ptr);
3719 }
3721 // Collect the parts of the format description
3722 // (1) strings that are passed through to tty->print
3723 // (2) replacement/substitution variable, preceeded by a '$'
3724 // (3) multi-token ANSIY C style strings
3725 while ( true ) {
3726 if ( _curchar == '%' || _curchar == '\n' ) {
3727 parse_err(SYNERR, "missing '\"' at end of format block");
3728 return NULL;
3729 }
3731 // (1)
3732 // Check if there is a string to pass through to output
3733 char *start = _ptr; // Record start of the next string
3734 while ((_curchar != '$') && (_curchar != '"') && (_curchar != '%') && (_curchar != '\n')) {
3735 if (_curchar == '\\') next_char(); // superquote
3736 if (_curchar == '\n') parse_err(SYNERR, "newline in string"); // unimplemented!
3737 next_char();
3738 }
3739 // If a string was found, terminate it and record in FormatRule
3740 if ( start != _ptr ) {
3741 *_ptr = '\0'; // Terminate the string
3742 format->_strings.addName(start);
3743 }
3745 // (2)
3746 // If we are at a replacement variable,
3747 // copy it and record in FormatRule
3748 if ( _curchar == '$' ) {
3749 next_char(); // Move past the '$'
3750 char* next_rep_var = get_ident(); // Nil terminate the variable name
3751 next_rep_var = strdup(next_rep_var);// Copy the string
3752 *_ptr = _curchar; // and replace Nil with original character
3753 format->_rep_vars.addName(next_rep_var);
3754 // Add flag to _strings list indicating we should check _rep_vars
3755 format->_strings.addName(NameList::_signal);
3756 }
3758 // (3)
3759 // Allow very long strings to be broken up,
3760 // using the ANSI C syntax "foo\n" <newline> "bar"
3761 if ( _curchar == '"') {
3762 next_char(); // Move past the '"'
3763 skipws(); // Skip white space before next string token
3764 if ( _curchar != '"') {
3765 break;
3766 } else {
3767 // Found one. Skip both " and the whitespace in between.
3768 next_char();
3769 }
3770 }
3771 } // end while part of format description
3772 }
3773 } else {
3774 // Add flag to _strings list indicating we should check _rep_vars
3775 format->_rep_vars.addName(rep_var);
3776 // Add flag to _strings list indicating we should check _rep_vars
3777 format->_strings.addName(NameList::_signal3);
3778 }
3779 } // end while part of format description
3780 }
3782 skipws();
3783 // Past format description, at '%'
3784 if ( _curchar != '%' || *(_ptr+1) != '}' ) {
3785 parse_err(SYNERR, "missing '%}' at end of format block");
3786 return NULL;
3787 }
3788 next_char(); // Move past the '%'
3789 next_char(); // Move past the '}'
3791 // Debug Stuff
3792 if (_AD._adl_debug > 1) fprintf(stderr,"Format Rule: %s\n", desc);
3794 skipws();
3795 return format;
3796 }
3799 //------------------------------effect_parse-----------------------------------
3800 void ADLParser::effect_parse(InstructForm *instr) {
3801 char* desc = NULL;
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);
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 ';'
3818 }
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();
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
3901 const Form *form2 = instr->_localNames[ident2];
3902 if (!form2) {
3903 parse_err(SYNERR, "operand name expected at %s\n", ident2);
3904 continue;
3905 }
3906 oper = form2->is_operand();
3907 if (oper == NULL && !form2->is_opclass()) {
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();
3924 // Record both instruction name and its operand list
3925 exp->add_instruction(instr_and_operands);
3927 skipws();
3928 }
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();
3938 // Debug Stuff
3939 if (_AD._adl_debug > 1) fprintf(stderr,"Expand Rule:\n");
3941 skipws();
3942 return (exp);
3943 }
3945 //------------------------------rewrite_parse----------------------------------
3946 RewriteRule* ADLParser::rewrite_parse(void) {
3947 char* params = NULL;
3948 char* desc = NULL;
3951 // This feature targeted for second generation description language.
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);
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);
3971 skipws();
3972 return (new RewriteRule(params,desc));
3973 }
3975 //------------------------------attr_parse-------------------------------------
3976 Attribute *ADLParser::attr_parse(char* ident) {
3977 Attribute *attrib; // Attribute class
3978 char *cost = NULL; // String representation of cost attribute
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
3993 skipws();
3994 attrib = new Attribute(ident,cost,INS_ATTR); // Build new predicate object
3995 return attrib;
3996 }
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;
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
4010 // Match expression starts with a '('
4011 if (cur_char() != '(')
4012 return NULL;
4014 next_char(); // advance past '('
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 }
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).
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 }
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 }
4050 // Parse the operands
4051 skipws();
4052 if (cur_char() != ')') {
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);
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 }
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 ')'
4077 MatchNode* mroot = new MatchNode(_AD,result,name,operation,lChild,rChild);
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;
4086 return mroot;
4087 }
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;
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 }
4113 if (opType == NULL) {
4114 parse_err(SYNERR, "missing type for argument '%s'\n", token);
4115 }
4117 child = new MatchNode(_AD, result, token, opType);
4118 ++numleaves;
4119 }
4121 return child;
4122 }
4126 // ******************** Private Utility Functions *************************
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
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
4142 int line = linenum();
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
4156 // Prepend location descriptor, for debugging.
4157 if (_AD._adlocation_debug) {
4158 char* location = get_line_string(line);
4159 char* end_loc = end_line_marker();
4160 char* result = (char *)malloc(strlen(location) + strlen(cppBlock) + strlen(end_loc) + 1);
4161 strcpy(result, location);
4162 strcat(result, cppBlock);
4163 strcat(result, end_loc);
4164 cppBlock = result;
4165 free(location);
4166 }
4167 }
4169 return cppBlock;
4170 }
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;
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 }
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 }
4234 // Helper function around get_expr
4235 // Sets _curchar to '(' so that get_paren_expr will search for a matching ')'
4236 char *ADLParser::get_paren_expr(const char *description, bool include_location) {
4237 int line = linenum();
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.
4244 int junk = 0;
4245 if (include_location && _AD._adlocation_debug && !is_int_token(token2, junk)) {
4246 // Prepend location descriptor, for debugging.
4247 char* location = get_line_string(line);
4248 char* end_loc = end_line_marker();
4249 char* result = (char *)malloc(strlen(location) + strlen(token2) + strlen(end_loc) + 1);
4250 strcpy(result, location);
4251 strcat(result, token2);
4252 strcat(result, end_loc);
4253 token2 = result;
4254 free(location);
4255 }
4256 return token2;
4257 }
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
4268 if( _curline == NULL ) // Return NULL at EOF.
4269 return NULL;
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
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)) {
4295 const char* def1 = def;
4296 const char* def2 = _AD.get_preproc_def(def1);
4297 // implement up to 2 levels of #define
4298 if (def2 != NULL && strcmp(def2, def1)) {
4299 def = def2;
4300 const char* def3 = _AD.get_preproc_def(def2);
4301 if (def3 != NULL && strcmp(def3, def2) && strcmp(def3, def1)) {
4302 parse_err(SYNERR, "unimplemented: using %s defined as %s => %s => %s",
4303 start, def1, def2, def3);
4304 }
4305 }
4306 start = strdup(def);
4307 }
4308 }
4310 return start; // Pointer to token in filebuf
4311 }
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();
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 }
4325 return ident;
4326 }
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 }
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;
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 }
4366 // Check for a control indicator, a third '$':
4367 if ( _curchar == '$' ) {
4368 next_char();
4369 }
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 '$$$$'");
4374 next_char();
4375 return NULL;
4376 }
4378 // Nil terminate the variable name following the '$'
4379 char *rep_var_name = get_ident();
4380 assert( rep_var_name != NULL,
4381 "Missing identifier after replacement variable indicator '$'");
4383 return rep_var;
4384 }
4388 //------------------------------get_rep_var_ident_dup-------------------------
4389 // Return the next replacement variable identifier, skipping first '$'
4390 // given a pointer into a line of the buffer.
4391 // Null terminates string, still inside the file buffer,
4392 // Returns a pointer to a copy of the string, or NULL on failure
4393 char *ADLParser::get_rep_var_ident_dup(void) {
4394 if( _curchar != '$' ) return NULL;
4396 next_char(); // Move past the '$'
4397 char *rep_var = _ptr; // Remember starting point
4399 // Check for a subfield indicator, a second '$':
4400 if ( _curchar == '$' ) {
4401 next_char();
4402 }
4404 // Check for a control indicator, a third '$':
4405 if ( _curchar == '$' ) {
4406 next_char();
4407 }
4409 // Check for more than three '$'s in sequence, SYNERR
4410 if( _curchar == '$' ) {
4411 parse_err(SYNERR, "Replacement variables and field specifiers can not start with '$$$$'");
4412 next_char();
4413 return NULL;
4414 }
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
4423 return rep_var;
4424 }
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();
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 }
4443 return ident;
4444 }
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
4457 if( _curline == NULL ) // Return NULL at EOF.
4458 return 0;
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 }
4479 // Reset _ptr to next char after token
4480 _ptr = end;
4482 return result; // integer
4483 }
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
4493 if( _curline == NULL ) // Return NULL at EOF.
4494 return NULL;
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 }
4515 return result;
4516 }
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;
4528 do {
4529 next_char(); // skip open paren & comma characters
4530 skipws();
4531 if (_curchar == ')') break;
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 }
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);
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);
4570 // Debugging Stuff
4571 if (_AD._adl_debug > 1) fprintf(stderr, "\tOperand Name: %s\n", ident);
4572 skipws();
4573 } while(_curchar == ',');
4575 if (_curchar != ')') parse_err(SYNERR, "missing ')'\n");
4576 else {
4577 next_char(); // set current character position past the close paren
4578 }
4579 }
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;
4592 do {
4593 next_char(); // skip open paren & comma characters
4594 skipws();
4595 if (_curchar == ')') break;
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 == ',');
4643 if (_curchar != ')') parse_err(SYNERR, "missing ')'\n");
4644 else {
4645 next_char(); // set current character position past the close paren
4646 }
4647 }
4650 //-------------------------------preproc_line----------------------------------
4651 // A "#line" keyword has been seen, so parse the rest of the line.
4652 void ADLParser::preproc_line(void) {
4653 int line = get_int();
4654 skipws_no_preproc();
4655 const char* file = NULL;
4656 if (_curchar == '"') {
4657 next_char(); // Move past the initial '"'
4658 file = _ptr;
4659 while (true) {
4660 if (_curchar == '\n') {
4661 parse_err(SYNERR, "missing '\"' at end of #line directive");
4662 return;
4663 }
4664 if (_curchar == '"') {
4665 *_ptr = '\0'; // Terminate the string
4666 next_char();
4667 skipws_no_preproc();
4668 break;
4669 }
4670 next_char();
4671 }
4672 }
4673 ensure_end_of_line();
4674 if (file != NULL)
4675 _AD._ADL_file._name = file;
4676 _buf.set_linenum(line);
4677 }
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 }
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 }
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;
4709 va_start(args, fmt);
4710 if (flag == 1)
4711 _AD._syntax_errs += _AD.emit_msg(0, flag, linenum(), fmt, args);
4712 else if (flag == 2)
4713 _AD._semantic_errs += _AD.emit_msg(0, flag, linenum(), fmt, args);
4714 else
4715 _AD._warnings += _AD.emit_msg(0, flag, linenum(), fmt, args);
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;
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 }
4738 //---------------------------ensure_start_of_line------------------------------
4739 // A preprocessor directive has been encountered. Be sure it has fallen at
4740 // the beginning of a line, or else report an error.
4741 void ADLParser::ensure_start_of_line(void) {
4742 if (_curchar == '\n') { next_line(); return; }
4743 assert( _ptr >= _curline && _ptr < _curline+strlen(_curline),
4744 "Must be able to find which line we are in" );
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 }
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 }
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 }
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;
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 }
4904 //---------------------------cur_char-----------------------------------------
4905 char ADLParser::cur_char() {
4906 return (_curchar);
4907 }
4909 //---------------------------next_char-----------------------------------------
4910 void ADLParser::next_char() {
4911 if (_curchar == '\n') parse_err(WARN, "must call next_line!");
4912 _curchar = *++_ptr;
4913 // if ( _curchar == '\n' ) {
4914 // next_line();
4915 // }
4916 }
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 }
4929 //---------------------------next_line-----------------------------------------
4930 void ADLParser::next_line() {
4931 _curline = _buf.get_line();
4932 _curchar = ' ';
4933 }
4935 //------------------------get_line_string--------------------------------------
4936 // Prepended location descriptor, for debugging.
4937 // Must return a malloced string (that can be freed if desired).
4938 char* ADLParser::get_line_string(int linenum) {
4939 const char* file = _AD._ADL_file._name;
4940 int line = linenum ? linenum : this->linenum();
4941 char* location = (char *)malloc(strlen(file) + 100);
4942 sprintf(location, "\n#line %d \"%s\"\n", line, file);
4943 return location;
4944 }
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 }
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 }
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 }
4984 static const char* skip_expr_ws(const char* str) {
4985 const char * cp = str;
4986 while (cp[0]) {
4987 if (cp[0] <= ' ') {
4988 ++cp;
4989 } else if (cp[0] == '#') {
4990 ++cp;
4991 while (cp[0] == ' ') ++cp;
4992 assert(0 == strncmp(cp, "line", 4), "must be a #line directive");
4993 const char* eol = strchr(cp, '\n');
4994 assert(eol != NULL, "must find end of line");
4995 if (eol == NULL) eol = cp + strlen(cp);
4996 cp = eol;
4997 } else {
4998 break;
4999 }
5000 }
5001 return cp;
5002 }
5004 //-----------------------equivalent_expressions--------------------------------
5005 bool ADLParser::equivalent_expressions(const char* str1, const char* str2) {
5006 if (str1 == str2)
5007 return true;
5008 else if (str1 == NULL || str2 == NULL)
5009 return false;
5010 const char* cp1 = str1;
5011 const char* cp2 = str2;
5012 char in_quote = '\0';
5013 while (cp1[0] && cp2[0]) {
5014 if (!in_quote) {
5015 // skip spaces and/or cpp directives
5016 const char* cp1a = skip_expr_ws(cp1);
5017 const char* cp2a = skip_expr_ws(cp2);
5018 if (cp1a > cp1 && cp2a > cp2) {
5019 cp1 = cp1a; cp2 = cp2a;
5020 continue;
5021 }
5022 if (cp1a > cp1 || cp2a > cp2) break; // fail
5023 }
5024 // match one non-space char
5025 if (cp1[0] != cp2[0]) break; // fail
5026 char ch = cp1[0];
5027 cp1++; cp2++;
5028 // watch for quotes
5029 if (in_quote && ch == '\\') {
5030 if (cp1[0] != cp2[0]) break; // fail
5031 if (!cp1[0]) break;
5032 cp1++; cp2++;
5033 }
5034 if (in_quote && ch == in_quote) {
5035 in_quote = '\0';
5036 } else if (!in_quote && (ch == '"' || ch == '\'')) {
5037 in_quote = ch;
5038 }
5039 }
5040 return (!cp1[0] && !cp2[0]);
5041 }
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 }
