Mercurial > jdk8-mips64-public > hotspot / file revision
src/share/vm/adlc/adlparse.cpp@55fb97c4c58d
src/share/vm/adlc/adlparse.cpp
Tue, 24 Dec 2013 11:48:39 -0800
- author
- mikael
- date
- Tue, 24 Dec 2013 11:48:39 -0800
- changeset 6198
- 55fb97c4c58d
- parent 5791
- c9ccd7b85f20
- child 6503
- a9becfeecd1b
- permissions
- -rw-r--r--
8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013
Summary: Copyright year updated for files modified during 2013
Reviewed-by: twisti, iveresov
1 /*
2 * Copyright (c) 1997, 2013, 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 }
118 // Add reg_class spill_regs after parsing.
119 RegisterForm *regBlock = _AD.get_registers();
120 if (regBlock == NULL) {
121 parse_err(SEMERR, "Did not declare 'register' definitions");
122 }
123 regBlock->addSpillRegClass();
125 // Done with parsing, check consistency.
127 if (_preproc_depth != 0) {
128 parse_err(SYNERR, "End of file inside #ifdef");
129 }
131 // AttributeForms ins_cost and op_cost must be defined for default behaviour
132 if (_globalNames[AttributeForm::_ins_cost] == NULL) {
133 parse_err(SEMERR, "Did not declare 'ins_cost' attribute");
134 }
135 if (_globalNames[AttributeForm::_op_cost] == NULL) {
136 parse_err(SEMERR, "Did not declare 'op_cost' attribute");
137 }
138 }
140 // ******************** Private Level 1 Parse Functions ********************
141 //------------------------------instr_parse------------------------------------
142 // Parse the contents of an instruction definition, build the InstructForm to
143 // represent that instruction, and add it to the InstructForm list.
144 void ADLParser::instr_parse(void) {
145 char *ident;
146 InstructForm *instr;
147 MatchRule *rule;
148 int match_rules_cnt = 0;
150 // First get the name of the instruction
151 if( (ident = get_unique_ident(_globalNames,"instruction")) == NULL )
152 return;
153 instr = new InstructForm(ident); // Create new instruction form
154 instr->_linenum = linenum();
155 _globalNames.Insert(ident, instr); // Add name to the name table
156 // Debugging Stuff
157 if (_AD._adl_debug > 1)
158 fprintf(stderr,"Parsing Instruction Form %s\n", ident);
160 // Then get the operands
161 skipws();
162 if (_curchar != '(') {
163 parse_err(SYNERR, "missing '(' in instruct definition\n");
164 }
165 // Parse the operand list
166 else get_oplist(instr->_parameters, instr->_localNames);
167 skipws(); // Skip leading whitespace
168 // Check for block delimiter
169 if ( (_curchar != '%')
170 || ( next_char(), (_curchar != '{')) ) {
171 parse_err(SYNERR, "missing '%%{' in instruction definition\n");
172 return;
173 }
174 next_char(); // Maintain the invariant
175 do {
176 ident = get_ident(); // Grab next identifier
177 if (ident == NULL) {
178 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar);
179 continue;
180 }
181 if (!strcmp(ident, "predicate")) instr->_predicate = pred_parse();
182 else if (!strcmp(ident, "match")) {
183 // Allow one instruction have several match rules.
184 rule = instr->_matrule;
185 if (rule == NULL) {
186 // This is first match rule encountered
187 rule = match_parse(instr->_localNames);
188 if (rule) {
189 instr->_matrule = rule;
190 // Special case the treatment of Control instructions.
191 if( instr->is_ideal_control() ) {
192 // Control instructions return a special result, 'Universe'
193 rule->_result = "Universe";
194 }
195 // Check for commutative operations with tree operands.
196 matchrule_clone_and_swap(rule, instr->_ident, match_rules_cnt);
197 }
198 } else {
199 // Find the end of the match rule list
200 while (rule->_next != NULL)
201 rule = rule->_next;
202 // Add the new match rule to the list
203 rule->_next = match_parse(instr->_localNames);
204 if (rule->_next) {
205 rule = rule->_next;
206 if( instr->is_ideal_control() ) {
207 parse_err(SYNERR, "unique match rule expected for %s\n", rule->_name);
208 return;
209 }
210 assert(match_rules_cnt < 100," too many match rule clones");
211 char* buf = (char*) malloc(strlen(instr->_ident) + 4);
212 sprintf(buf, "%s_%d", instr->_ident, match_rules_cnt++);
213 rule->_result = buf;
214 // Check for commutative operations with tree operands.
215 matchrule_clone_and_swap(rule, instr->_ident, match_rules_cnt);
216 }
217 }
218 }
219 else if (!strcmp(ident, "encode")) {
220 parse_err(SYNERR, "Instructions specify ins_encode, not encode\n");
221 }
222 else if (!strcmp(ident, "ins_encode")) ins_encode_parse(*instr);
223 else if (!strcmp(ident, "opcode")) instr->_opcode = opcode_parse(instr);
224 else if (!strcmp(ident, "size")) instr->_size = size_parse(instr);
225 else if (!strcmp(ident, "effect")) effect_parse(instr);
226 else if (!strcmp(ident, "expand")) instr->_exprule = expand_parse(instr);
227 else if (!strcmp(ident, "rewrite")) instr->_rewrule = rewrite_parse();
228 else if (!strcmp(ident, "constraint")) {
229 parse_err(SYNERR, "Instructions do not specify a constraint\n");
230 }
231 else if (!strcmp(ident, "construct")) {
232 parse_err(SYNERR, "Instructions do not specify a construct\n");
233 }
234 else if (!strcmp(ident, "format")) instr->_format = format_parse();
235 else if (!strcmp(ident, "interface")) {
236 parse_err(SYNERR, "Instructions do not specify an interface\n");
237 }
238 else if (!strcmp(ident, "ins_pipe")) ins_pipe_parse(*instr);
239 else { // Done with staticly defined parts of instruction definition
240 // Check identifier to see if it is the name of an attribute
241 const Form *form = _globalNames[ident];
242 AttributeForm *attr = form ? form->is_attribute() : NULL;
243 if( attr && (attr->_atype == INS_ATTR) ) {
244 // Insert the new attribute into the linked list.
245 Attribute *temp = attr_parse(ident);
246 temp->_next = instr->_attribs;
247 instr->_attribs = temp;
248 } else {
249 parse_err(SYNERR, "expected one of:\n predicate, match, encode, or the name of an instruction attribute at %s\n", ident);
250 }
251 }
252 skipws();
253 } while(_curchar != '%');
254 next_char();
255 if (_curchar != '}') {
256 parse_err(SYNERR, "missing '%%}' in instruction definition\n");
257 return;
258 }
259 // Check for "Set" form of chain rule
260 adjust_set_rule(instr);
261 if (_AD._pipeline ) {
262 if( instr->expands() ) {
263 if( instr->_ins_pipe )
264 parse_err(WARN, "ins_pipe and expand rule both specified for instruction \"%s\"; ins_pipe will be unused\n", instr->_ident);
265 } else {
266 if( !instr->_ins_pipe )
267 parse_err(WARN, "No ins_pipe specified for instruction \"%s\"\n", instr->_ident);
268 }
269 }
270 // Add instruction to tail of instruction list
271 _AD.addForm(instr);
273 // Create instruction form for each additional match rule
274 rule = instr->_matrule;
275 if (rule != NULL) {
276 rule = rule->_next;
277 while (rule != NULL) {
278 ident = (char*)rule->_result;
279 InstructForm *clone = new InstructForm(ident, instr, rule); // Create new instruction form
280 _globalNames.Insert(ident, clone); // Add name to the name table
281 // Debugging Stuff
282 if (_AD._adl_debug > 1)
283 fprintf(stderr,"Parsing Instruction Form %s\n", ident);
284 // Check for "Set" form of chain rule
285 adjust_set_rule(clone);
286 // Add instruction to tail of instruction list
287 _AD.addForm(clone);
288 rule = rule->_next;
289 clone->_matrule->_next = NULL; // One match rule per clone
290 }
291 }
292 }
294 //------------------------------matchrule_clone_and_swap-----------------------
295 // Check for commutative operations with subtree operands,
296 // create clones and swap operands.
297 void ADLParser::matchrule_clone_and_swap(MatchRule* rule, const char* instr_ident, int& match_rules_cnt) {
298 // Check for commutative operations with tree operands.
299 int count = 0;
300 rule->count_commutative_op(count);
301 if (count > 0) {
302 // Clone match rule and swap commutative operation's operands.
303 rule->matchrule_swap_commutative_op(instr_ident, count, match_rules_cnt);
304 }
305 }
307 //------------------------------adjust_set_rule--------------------------------
308 // Check for "Set" form of chain rule
309 void ADLParser::adjust_set_rule(InstructForm *instr) {
310 if (instr->_matrule == NULL || instr->_matrule->_rChild == NULL) return;
311 const char *rch = instr->_matrule->_rChild->_opType;
312 const Form *frm = _globalNames[rch];
313 if( (! strcmp(instr->_matrule->_opType,"Set")) &&
314 frm && frm->is_operand() && (! frm->ideal_only()) ) {
315 // Previous implementation, which missed leaP*, but worked for loadCon*
316 unsigned position = 0;
317 const char *result = NULL;
318 const char *name = NULL;
319 const char *optype = NULL;
320 MatchNode *right = instr->_matrule->_rChild;
321 if (right->base_operand(position, _globalNames, result, name, optype)) {
322 position = 1;
323 const char *result2 = NULL;
324 const char *name2 = NULL;
325 const char *optype2 = NULL;
326 // Can not have additional base operands in right side of match!
327 if ( ! right->base_operand( position, _globalNames, result2, name2, optype2) ) {
328 if (instr->_predicate != NULL)
329 parse_err(SYNERR, "ADLC does not support instruction chain rules with predicates");
330 // Chain from input _ideal_operand_type_,
331 // Needed for shared roots of match-trees
332 ChainList *lst = (ChainList *)_AD._chainRules[optype];
333 if (lst == NULL) {
334 lst = new ChainList();
335 _AD._chainRules.Insert(optype, lst);
336 }
337 if (!lst->search(instr->_matrule->_lChild->_opType)) {
338 const char *cost = instr->cost();
339 if (cost == NULL) {
340 cost = ((AttributeForm*)_globalNames[AttributeForm::_ins_cost])->_attrdef;
341 }
342 // The ADLC does not support chaining from the ideal operand type
343 // of a predicated user-defined operand
344 if( frm->is_operand() == NULL || frm->is_operand()->_predicate == NULL ) {
345 lst->insert(instr->_matrule->_lChild->_opType,cost,instr->_ident);
346 }
347 }
348 // Chain from input _user_defined_operand_type_,
349 lst = (ChainList *)_AD._chainRules[result];
350 if (lst == NULL) {
351 lst = new ChainList();
352 _AD._chainRules.Insert(result, lst);
353 }
354 if (!lst->search(instr->_matrule->_lChild->_opType)) {
355 const char *cost = instr->cost();
356 if (cost == NULL) {
357 cost = ((AttributeForm*)_globalNames[AttributeForm::_ins_cost])->_attrdef;
358 }
359 // It is safe to chain from the top-level user-defined operand even
360 // if it has a predicate, since the predicate is checked before
361 // the user-defined type is available.
362 lst->insert(instr->_matrule->_lChild->_opType,cost,instr->_ident);
363 }
364 } else {
365 // May have instruction chain rule if root of right-tree is an ideal
366 OperandForm *rightOp = _globalNames[right->_opType]->is_operand();
367 if( rightOp ) {
368 const Form *rightRoot = _globalNames[rightOp->_matrule->_opType];
369 if( rightRoot && rightRoot->ideal_only() ) {
370 const char *chain_op = NULL;
371 if( rightRoot->is_instruction() )
372 chain_op = rightOp->_ident;
373 if( chain_op ) {
374 // Look-up the operation in chain rule table
375 ChainList *lst = (ChainList *)_AD._chainRules[chain_op];
376 if (lst == NULL) {
377 lst = new ChainList();
378 _AD._chainRules.Insert(chain_op, lst);
379 }
380 // if (!lst->search(instr->_matrule->_lChild->_opType)) {
381 const char *cost = instr->cost();
382 if (cost == NULL) {
383 cost = ((AttributeForm*)_globalNames[AttributeForm::_ins_cost])->_attrdef;
384 }
385 // This chains from a top-level operand whose predicate, if any,
386 // has been checked.
387 lst->insert(instr->_matrule->_lChild->_opType,cost,instr->_ident);
388 // }
389 }
390 }
391 }
392 } // end chain rule from right-tree's ideal root
393 }
394 }
395 }
398 //------------------------------oper_parse-------------------------------------
399 void ADLParser::oper_parse(void) {
400 char *ident;
401 OperandForm *oper;
402 AttributeForm *attr;
403 MatchRule *rule;
405 // First get the name of the operand
406 skipws();
407 if( (ident = get_unique_ident(_globalNames,"operand")) == NULL )
408 return;
409 oper = new OperandForm(ident); // Create new operand form
410 oper->_linenum = linenum();
411 _globalNames.Insert(ident, oper); // Add name to the name table
413 // Debugging Stuff
414 if (_AD._adl_debug > 1) fprintf(stderr,"Parsing Operand Form %s\n", ident);
416 // Get the component operands
417 skipws();
418 if (_curchar != '(') {
419 parse_err(SYNERR, "missing '(' in operand definition\n");
420 return;
421 }
422 else get_oplist(oper->_parameters, oper->_localNames); // Parse the component operand list
423 skipws();
424 // Check for block delimiter
425 if ((_curchar != '%') || (*(_ptr+1) != '{')) { // If not open block
426 parse_err(SYNERR, "missing '%%{' in operand definition\n");
427 return;
428 }
429 next_char(); next_char(); // Skip over "%{" symbol
430 do {
431 ident = get_ident(); // Grab next identifier
432 if (ident == NULL) {
433 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar);
434 continue;
435 }
436 if (!strcmp(ident, "predicate")) oper->_predicate = pred_parse();
437 else if (!strcmp(ident, "match")) {
438 // Find the end of the match rule list
439 rule = oper->_matrule;
440 if (rule) {
441 while (rule->_next) rule = rule->_next;
442 // Add the new match rule to the list
443 rule->_next = match_parse(oper->_localNames);
444 if (rule->_next) {
445 rule->_next->_result = oper->_ident;
446 }
447 }
448 else {
449 // This is first match rule encountered
450 oper->_matrule = match_parse(oper->_localNames);
451 if (oper->_matrule) {
452 oper->_matrule->_result = oper->_ident;
453 }
454 }
455 }
456 else if (!strcmp(ident, "encode")) oper->_interface = interface_parse();
457 else if (!strcmp(ident, "ins_encode")) {
458 parse_err(SYNERR, "Operands specify 'encode', not 'ins_encode'\n");
459 }
460 else if (!strcmp(ident, "opcode")) {
461 parse_err(SYNERR, "Operands do not specify an opcode\n");
462 }
463 else if (!strcmp(ident, "effect")) {
464 parse_err(SYNERR, "Operands do not specify an effect\n");
465 }
466 else if (!strcmp(ident, "expand")) {
467 parse_err(SYNERR, "Operands do not specify an expand\n");
468 }
469 else if (!strcmp(ident, "rewrite")) {
470 parse_err(SYNERR, "Operands do not specify a rewrite\n");
471 }
472 else if (!strcmp(ident, "constraint"))oper->_constraint= constraint_parse();
473 else if (!strcmp(ident, "construct")) oper->_construct = construct_parse();
474 else if (!strcmp(ident, "format")) oper->_format = format_parse();
475 else if (!strcmp(ident, "interface")) oper->_interface = interface_parse();
476 // Check identifier to see if it is the name of an attribute
477 else if (((attr = _globalNames[ident]->is_attribute()) != NULL) &&
478 (attr->_atype == OP_ATTR)) oper->_attribs = attr_parse(ident);
479 else {
480 parse_err(SYNERR, "expected one of - constraint, predicate, match, encode, format, construct, or the name of a defined operand attribute at %s\n", ident);
481 }
482 skipws();
483 } while(_curchar != '%');
484 next_char();
485 if (_curchar != '}') {
486 parse_err(SYNERR, "missing '%%}' in operand definition\n");
487 return;
488 }
489 // Add operand to tail of operand list
490 _AD.addForm(oper);
491 }
493 //------------------------------opclass_parse----------------------------------
494 // Operand Classes are a block with a comma delimited list of operand names
495 void ADLParser::opclass_parse(void) {
496 char *ident;
497 OpClassForm *opc;
498 OperandForm *opForm;
500 // First get the name of the operand class
501 skipws();
502 if( (ident = get_unique_ident(_globalNames,"opclass")) == NULL )
503 return;
504 opc = new OpClassForm(ident); // Create new operand class form
505 _globalNames.Insert(ident, opc); // Add name to the name table
507 // Debugging Stuff
508 if (_AD._adl_debug > 1)
509 fprintf(stderr,"Parsing Operand Class Form %s\n", ident);
511 // Get the list of operands
512 skipws();
513 if (_curchar != '(') {
514 parse_err(SYNERR, "missing '(' in operand definition\n");
515 return;
516 }
517 do {
518 next_char(); // Skip past open paren or comma
519 ident = get_ident(); // Grab next identifier
520 if (ident == NULL) {
521 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar);
522 continue;
523 }
524 // Check identifier to see if it is the name of an operand
525 const Form *form = _globalNames[ident];
526 opForm = form ? form->is_operand() : NULL;
527 if ( opForm ) {
528 opc->_oplst.addName(ident); // Add operand to opclass list
529 opForm->_classes.addName(opc->_ident);// Add opclass to operand list
530 }
531 else {
532 parse_err(SYNERR, "expected name of a defined operand at %s\n", ident);
533 }
534 skipws(); // skip trailing whitespace
535 } while (_curchar == ','); // Check for the comma
536 // Check for closing ')'
537 if (_curchar != ')') {
538 parse_err(SYNERR, "missing ')' or ',' in opclass definition\n");
539 return;
540 }
541 next_char(); // Consume the ')'
542 skipws();
543 // Check for closing ';'
544 if (_curchar != ';') {
545 parse_err(SYNERR, "missing ';' in opclass definition\n");
546 return;
547 }
548 next_char(); // Consume the ';'
549 // Add operand to tail of operand list
550 _AD.addForm(opc);
551 }
553 //------------------------------ins_attr_parse---------------------------------
554 void ADLParser::ins_attr_parse(void) {
555 char *ident;
556 char *aexpr;
557 AttributeForm *attrib;
559 // get name for the instruction attribute
560 skipws(); // Skip leading whitespace
561 if( (ident = get_unique_ident(_globalNames,"inst_attrib")) == NULL )
562 return;
563 // Debugging Stuff
564 if (_AD._adl_debug > 1) fprintf(stderr,"Parsing Ins_Attribute Form %s\n", ident);
566 // Get default value of the instruction attribute
567 skipws(); // Skip whitespace
568 if ((aexpr = get_paren_expr("attribute default expression string")) == NULL) {
569 parse_err(SYNERR, "missing '(' in ins_attrib definition\n");
570 return;
571 }
572 // Debug Stuff
573 if (_AD._adl_debug > 1) fprintf(stderr,"Attribute Expression: %s\n", aexpr);
575 // Check for terminator
576 if (_curchar != ';') {
577 parse_err(SYNERR, "missing ';' in ins_attrib definition\n");
578 return;
579 }
580 next_char(); // Advance past the ';'
582 // Construct the attribute, record global name, and store in ArchDesc
583 attrib = new AttributeForm(ident, INS_ATTR, aexpr);
584 _globalNames.Insert(ident, attrib); // Add name to the name table
585 _AD.addForm(attrib);
586 }
588 //------------------------------op_attr_parse----------------------------------
589 void ADLParser::op_attr_parse(void) {
590 char *ident;
591 char *aexpr;
592 AttributeForm *attrib;
594 // get name for the operand attribute
595 skipws(); // Skip leading whitespace
596 if( (ident = get_unique_ident(_globalNames,"op_attrib")) == NULL )
597 return;
598 // Debugging Stuff
599 if (_AD._adl_debug > 1) fprintf(stderr,"Parsing Op_Attribute Form %s\n", ident);
601 // Get default value of the instruction attribute
602 skipws(); // Skip whitespace
603 if ((aexpr = get_paren_expr("attribute default expression string")) == NULL) {
604 parse_err(SYNERR, "missing '(' in op_attrib definition\n");
605 return;
606 }
607 // Debug Stuff
608 if (_AD._adl_debug > 1) fprintf(stderr,"Attribute Expression: %s\n", aexpr);
610 // Check for terminator
611 if (_curchar != ';') {
612 parse_err(SYNERR, "missing ';' in op_attrib definition\n");
613 return;
614 }
615 next_char(); // Advance past the ';'
617 // Construct the attribute, record global name, and store in ArchDesc
618 attrib = new AttributeForm(ident, OP_ATTR, aexpr);
619 _globalNames.Insert(ident, attrib);
620 _AD.addForm(attrib);
621 }
623 //------------------------------definitions_parse-----------------------------------
624 void ADLParser::definitions_parse(void) {
625 skipws(); // Skip leading whitespace
626 if (_curchar == '%' && *(_ptr+1) == '{') {
627 next_char(); next_char(); // Skip "%{"
628 skipws();
629 while (_curchar != '%' && *(_ptr+1) != '}') {
630 // Process each definition until finding closing string "%}"
631 char *token = get_ident();
632 if (token == NULL) {
633 parse_err(SYNERR, "missing identifier inside definitions block.\n");
634 return;
635 }
636 if (strcmp(token,"int_def")==0) { int_def_parse(); }
637 // if (strcmp(token,"str_def")==0) { str_def_parse(); }
638 skipws();
639 }
640 }
641 else {
642 parse_err(SYNERR, "Missing %%{ ... %%} block after definitions keyword.\n");
643 return;
644 }
645 }
647 //------------------------------int_def_parse----------------------------------
648 // Parse Example:
649 // int_def MEMORY_REF_COST ( 200, DEFAULT_COST * 2);
650 // <keyword> <name> ( <int_value>, <description> );
651 //
652 void ADLParser::int_def_parse(void) {
653 char *name = NULL; // Name of definition
654 char *value = NULL; // its value,
655 int int_value = -1; // positive values only
656 char *description = NULL; // textual description
658 // Get definition name
659 skipws(); // Skip whitespace
660 name = get_ident();
661 if (name == NULL) {
662 parse_err(SYNERR, "missing definition name after int_def\n");
663 return;
664 }
666 // Check for value of int_def dname( integer_value [, string_expression ] )
667 skipws();
668 if (_curchar == '(') {
670 // Parse the integer value.
671 next_char();
672 value = get_ident();
673 if (value == NULL) {
674 parse_err(SYNERR, "missing value in int_def\n");
675 return;
676 }
677 if( !is_int_token(value, int_value) ) {
678 parse_err(SYNERR, "value in int_def is not recognized as integer\n");
679 return;
680 }
681 skipws();
683 // Check for description
684 if (_curchar == ',') {
685 next_char(); // skip ','
687 description = get_expr("int_def description", ")");
688 if (description == NULL) {
689 parse_err(SYNERR, "invalid or missing description in int_def\n");
690 return;
691 }
692 trim(description);
693 }
695 if (_curchar != ')') {
696 parse_err(SYNERR, "missing ')' in register definition statement\n");
697 return;
698 }
699 next_char();
700 }
702 // Check for closing ';'
703 skipws();
704 if (_curchar != ';') {
705 parse_err(SYNERR, "missing ';' after int_def\n");
706 return;
707 }
708 next_char(); // move past ';'
710 // Debug Stuff
711 if (_AD._adl_debug > 1) {
712 fprintf(stderr,"int_def: %s ( %s, %s )\n", name,
713 (value), (description ? description : ""));
714 }
716 // Record new definition.
717 Expr *expr = new Expr(name, description, int_value, int_value);
718 const Expr *old_expr = _AD.globalDefs().define(name, expr);
719 if (old_expr != NULL) {
720 parse_err(SYNERR, "Duplicate definition\n");
721 return;
722 }
724 return;
725 }
728 //------------------------------source_parse-----------------------------------
729 void ADLParser::source_parse(void) {
730 SourceForm *source; // Encode class for instruction/operand
731 char *rule = NULL; // String representation of encode rule
733 skipws(); // Skip leading whitespace
734 if ( (rule = find_cpp_block("source block")) == NULL ) {
735 parse_err(SYNERR, "incorrect or missing block for 'source'.\n");
736 return;
737 }
738 // Debug Stuff
739 if (_AD._adl_debug > 1) fprintf(stderr,"Source Form: %s\n", rule);
741 source = new SourceForm(rule); // Build new Source object
742 _AD.addForm(source);
743 // skipws();
744 }
746 //------------------------------source_hpp_parse-------------------------------
747 // Parse a source_hpp %{ ... %} block.
748 // The code gets stuck into the ad_<arch>.hpp file.
749 // If the source_hpp block appears before the register block in the AD
750 // file, it goes up at the very top of the ad_<arch>.hpp file, so that
751 // it can be used by register encodings, etc. Otherwise, it goes towards
752 // the bottom, where it's useful as a global definition to *.cpp files.
753 void ADLParser::source_hpp_parse(void) {
754 char *rule = NULL; // String representation of encode rule
756 skipws(); // Skip leading whitespace
757 if ( (rule = find_cpp_block("source_hpp block")) == NULL ) {
758 parse_err(SYNERR, "incorrect or missing block for 'source_hpp'.\n");
759 return;
760 }
761 // Debug Stuff
762 if (_AD._adl_debug > 1) fprintf(stderr,"Header Form: %s\n", rule);
764 if (_AD.get_registers() == NULL) {
765 // Very early in the file, before reg_defs, we collect pre-headers.
766 PreHeaderForm* pre_header = new PreHeaderForm(rule);
767 _AD.addForm(pre_header);
768 } else {
769 // Normally, we collect header info, placed at the bottom of the hpp file.
770 HeaderForm* header = new HeaderForm(rule);
771 _AD.addForm(header);
772 }
773 }
775 //------------------------------reg_parse--------------------------------------
776 void ADLParser::reg_parse(void) {
777 RegisterForm *regBlock = _AD.get_registers(); // Information about registers encoding
778 if (regBlock == NULL) {
779 // Create the RegisterForm for the architecture description.
780 regBlock = new RegisterForm(); // Build new Source object
781 _AD.addForm(regBlock);
782 }
784 skipws(); // Skip leading whitespace
785 if (_curchar == '%' && *(_ptr+1) == '{') {
786 next_char(); next_char(); // Skip "%{"
787 skipws();
788 while (_curchar != '%' && *(_ptr+1) != '}') {
789 char *token = get_ident();
790 if (token == NULL) {
791 parse_err(SYNERR, "missing identifier inside register block.\n");
792 return;
793 }
794 if (strcmp(token,"reg_def")==0) { reg_def_parse(); }
795 else if (strcmp(token,"reg_class")==0) { reg_class_parse(); }
796 else if (strcmp(token,"alloc_class")==0) { alloc_class_parse(); }
797 else if (strcmp(token,"#define")==0) { preproc_define(); }
798 else { parse_err(SYNERR, "bad token %s inside register block.\n", token); break; }
799 skipws();
800 }
801 }
802 else {
803 parse_err(SYNERR, "Missing %c{ ... %c} block after register keyword.\n",'%','%');
804 return;
805 }
806 }
808 //------------------------------encode_parse-----------------------------------
809 void ADLParser::encode_parse(void) {
810 EncodeForm *encBlock; // Information about instruction/operand encoding
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 }
989 if (strcmp(token,"inline_cache_reg")==0) {
990 inline_cache_parse(frame, false);
991 }
992 if (strcmp(token,"compiler_method_oop_reg")==0) {
993 parse_err(WARN, "Using obsolete Token, compiler_method_oop_reg");
994 skipws();
995 }
996 if (strcmp(token,"interpreter_method_oop_reg")==0) {
997 interpreter_method_oop_parse(frame, false);
998 }
999 if (strcmp(token,"cisc_spilling_operand_name")==0) {
1000 cisc_spilling_operand_name_parse(frame, false);
1001 }
1002 if (strcmp(token,"stack_alignment")==0) {
1003 stack_alignment_parse(frame);
1004 }
1005 if (strcmp(token,"return_addr")==0) {
1006 return_addr_parse(frame, false);
1007 }
1008 if (strcmp(token,"in_preserve_stack_slots")==0) {
1009 preserve_stack_parse(frame);
1010 }
1011 if (strcmp(token,"out_preserve_stack_slots")==0) {
1012 parse_err(WARN, "Using obsolete token, out_preserve_stack_slots");
1013 skipws();
1014 }
1015 if (strcmp(token,"varargs_C_out_slots_killed")==0) {
1016 frame->_varargs_C_out_slots_killed = parse_one_arg("varargs C out slots killed");
1017 }
1018 if (strcmp(token,"calling_convention")==0) {
1019 frame->_calling_convention = calling_convention_parse();
1020 }
1021 if (strcmp(token,"return_value")==0) {
1022 frame->_return_value = return_value_parse();
1023 }
1024 if (strcmp(token,"c_frame_pointer")==0) {
1025 frame_pointer_parse(frame, true);
1026 }
1027 if (strcmp(token,"c_return_addr")==0) {
1028 return_addr_parse(frame, true);
1029 }
1030 if (strcmp(token,"c_calling_convention")==0) {
1031 frame->_c_calling_convention = calling_convention_parse();
1032 }
1033 if (strcmp(token,"c_return_value")==0) {
1034 frame->_c_return_value = return_value_parse();
1035 }
1037 skipws();
1038 }
1039 }
1040 else {
1041 parse_err(SYNERR, "Missing %c{ ... %c} block after encode keyword.\n",'%','%');
1042 return;
1043 }
1044 // All Java versions are required, native versions are optional
1045 if(frame->_frame_pointer == NULL) {
1046 parse_err(SYNERR, "missing frame pointer definition in frame section.\n");
1047 return;
1048 }
1049 // !!!!! !!!!!
1050 // if(frame->_interpreter_frame_ptr_reg == NULL) {
1051 // parse_err(SYNERR, "missing interpreter frame pointer definition in frame section.\n");
1052 // return;
1053 // }
1054 if(frame->_alignment == NULL) {
1055 parse_err(SYNERR, "missing alignment definition in frame section.\n");
1056 return;
1057 }
1058 if(frame->_return_addr == NULL) {
1059 parse_err(SYNERR, "missing return address location in frame section.\n");
1060 return;
1061 }
1062 if(frame->_in_preserve_slots == NULL) {
1063 parse_err(SYNERR, "missing stack slot preservation definition in frame section.\n");
1064 return;
1065 }
1066 if(frame->_varargs_C_out_slots_killed == NULL) {
1067 parse_err(SYNERR, "missing varargs C out slots killed definition in frame section.\n");
1068 return;
1069 }
1070 if(frame->_calling_convention == NULL) {
1071 parse_err(SYNERR, "missing calling convention definition in frame section.\n");
1072 return;
1073 }
1074 if(frame->_return_value == NULL) {
1075 parse_err(SYNERR, "missing return value definition in frame section.\n");
1076 return;
1077 }
1078 // Fill natives in identically with the Java versions if not present.
1079 if(frame->_c_frame_pointer == NULL) {
1080 frame->_c_frame_pointer = frame->_frame_pointer;
1081 }
1082 if(frame->_c_return_addr == NULL) {
1083 frame->_c_return_addr = frame->_return_addr;
1084 frame->_c_return_addr_loc = frame->_return_addr_loc;
1085 }
1086 if(frame->_c_calling_convention == NULL) {
1087 frame->_c_calling_convention = frame->_calling_convention;
1088 }
1089 if(frame->_c_return_value == NULL) {
1090 frame->_c_return_value = frame->_return_value;
1091 }
1093 // Debug Stuff
1094 if (_AD._adl_debug > 1) fprintf(stderr,"Frame Form: %s\n", desc);
1096 // Create the EncodeForm for the architecture description.
1097 _AD.addForm(frame);
1098 // skipws();
1099 }
1101 //------------------------------stack_dir_parse--------------------------------
1102 void ADLParser::stack_dir_parse(FrameForm *frame) {
1103 char *direction = parse_one_arg("stack direction entry");
1104 if (strcmp(direction, "TOWARDS_LOW") == 0) {
1105 frame->_direction = false;
1106 }
1107 else if (strcmp(direction, "TOWARDS_HIGH") == 0) {
1108 frame->_direction = true;
1109 }
1110 else {
1111 parse_err(SYNERR, "invalid value inside stack direction entry.\n");
1112 return;
1113 }
1114 }
1116 //------------------------------sync_stack_slots_parse-------------------------
1117 void ADLParser::sync_stack_slots_parse(FrameForm *frame) {
1118 // Assign value into frame form
1119 frame->_sync_stack_slots = parse_one_arg("sync stack slots entry");
1120 }
1122 //------------------------------frame_pointer_parse----------------------------
1123 void ADLParser::frame_pointer_parse(FrameForm *frame, bool native) {
1124 char *frame_pointer = parse_one_arg("frame pointer entry");
1125 // Assign value into frame form
1126 if (native) { frame->_c_frame_pointer = frame_pointer; }
1127 else { frame->_frame_pointer = frame_pointer; }
1128 }
1130 //------------------------------interpreter_frame_pointer_parse----------------------------
1131 void ADLParser::interpreter_frame_pointer_parse(FrameForm *frame, bool native) {
1132 frame->_interpreter_frame_pointer_reg = parse_one_arg("interpreter frame pointer entry");
1133 }
1135 //------------------------------inline_cache_parse-----------------------------
1136 void ADLParser::inline_cache_parse(FrameForm *frame, bool native) {
1137 frame->_inline_cache_reg = parse_one_arg("inline cache reg entry");
1138 }
1140 //------------------------------interpreter_method_oop_parse------------------
1141 void ADLParser::interpreter_method_oop_parse(FrameForm *frame, bool native) {
1142 frame->_interpreter_method_oop_reg = parse_one_arg("method oop reg entry");
1143 }
1145 //------------------------------cisc_spilling_operand_parse---------------------
1146 void ADLParser::cisc_spilling_operand_name_parse(FrameForm *frame, bool native) {
1147 frame->_cisc_spilling_operand_name = parse_one_arg("cisc spilling operand name");
1148 }
1150 //------------------------------stack_alignment_parse--------------------------
1151 void ADLParser::stack_alignment_parse(FrameForm *frame) {
1152 char *alignment = parse_one_arg("stack alignment entry");
1153 // Assign value into frame
1154 frame->_alignment = alignment;
1155 }
1157 //------------------------------parse_one_arg-------------------------------
1158 char *ADLParser::parse_one_arg(const char *description) {
1159 char *token = NULL;
1160 if(_curchar == '(') {
1161 next_char();
1162 skipws();
1163 token = get_expr(description, ")");
1164 if (token == NULL) {
1165 parse_err(SYNERR, "missing value inside %s.\n", description);
1166 return NULL;
1167 }
1168 next_char(); // skip the close paren
1169 if(_curchar != ';') { // check for semi-colon
1170 parse_err(SYNERR, "missing %c in.\n", ';', description);
1171 return NULL;
1172 }
1173 next_char(); // skip the semi-colon
1174 }
1175 else {
1176 parse_err(SYNERR, "Missing %c in.\n", '(', description);
1177 return NULL;
1178 }
1180 trim(token);
1181 return token;
1182 }
1184 //------------------------------return_addr_parse------------------------------
1185 void ADLParser::return_addr_parse(FrameForm *frame, bool native) {
1186 bool in_register = true;
1187 if(_curchar == '(') {
1188 next_char();
1189 skipws();
1190 char *token = get_ident();
1191 if (token == NULL) {
1192 parse_err(SYNERR, "missing value inside return address entry.\n");
1193 return;
1194 }
1195 // check for valid values for stack/register
1196 if (strcmp(token, "REG") == 0) {
1197 in_register = true;
1198 }
1199 else if (strcmp(token, "STACK") == 0) {
1200 in_register = false;
1201 }
1202 else {
1203 parse_err(SYNERR, "invalid value inside return_address entry.\n");
1204 return;
1205 }
1206 if (native) { frame->_c_return_addr_loc = in_register; }
1207 else { frame->_return_addr_loc = in_register; }
1209 // Parse expression that specifies register or stack position
1210 skipws();
1211 char *token2 = get_expr("return address entry", ")");
1212 if (token2 == NULL) {
1213 parse_err(SYNERR, "missing value inside return address entry.\n");
1214 return;
1215 }
1216 next_char(); // skip the close paren
1217 if (native) { frame->_c_return_addr = token2; }
1218 else { frame->_return_addr = token2; }
1220 if(_curchar != ';') { // check for semi-colon
1221 parse_err(SYNERR, "missing %c in return address entry.\n", ';');
1222 return;
1223 }
1224 next_char(); // skip the semi-colon
1225 }
1226 else {
1227 parse_err(SYNERR, "Missing %c in return_address entry.\n", '(');
1228 }
1229 }
1231 //------------------------------preserve_stack_parse---------------------------
1232 void ADLParser::preserve_stack_parse(FrameForm *frame) {
1233 if(_curchar == '(') {
1234 char *token = get_paren_expr("preserve_stack_slots");
1235 frame->_in_preserve_slots = token;
1237 if(_curchar != ';') { // check for semi-colon
1238 parse_err(SYNERR, "missing %c in preserve stack slot entry.\n", ';');
1239 return;
1240 }
1241 next_char(); // skip the semi-colon
1242 }
1243 else {
1244 parse_err(SYNERR, "Missing %c in preserve stack slot entry.\n", '(');
1245 }
1246 }
1248 //------------------------------calling_convention_parse-----------------------
1249 char *ADLParser::calling_convention_parse() {
1250 char *desc = NULL; // String representation of calling_convention
1252 skipws(); // Skip leading whitespace
1253 if ( (desc = find_cpp_block("calling convention block")) == NULL ) {
1254 parse_err(SYNERR, "incorrect or missing block for 'calling_convention'.\n");
1255 }
1256 return desc;
1257 }
1259 //------------------------------return_value_parse-----------------------------
1260 char *ADLParser::return_value_parse() {
1261 char *desc = NULL; // String representation of calling_convention
1263 skipws(); // Skip leading whitespace
1264 if ( (desc = find_cpp_block("return value block")) == NULL ) {
1265 parse_err(SYNERR, "incorrect or missing block for 'return_value'.\n");
1266 }
1267 return desc;
1268 }
1270 //------------------------------ins_pipe_parse---------------------------------
1271 void ADLParser::ins_pipe_parse(InstructForm &instr) {
1272 char * ident;
1274 skipws();
1275 if ( _curchar != '(' ) { // Check for delimiter
1276 parse_err(SYNERR, "missing \"(\" in ins_pipe definition\n");
1277 return;
1278 }
1280 next_char();
1281 ident = get_ident(); // Grab next identifier
1283 if (ident == NULL) {
1284 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar);
1285 return;
1286 }
1288 skipws();
1289 if ( _curchar != ')' ) { // Check for delimiter
1290 parse_err(SYNERR, "missing \")\" in ins_pipe definition\n");
1291 return;
1292 }
1294 next_char(); // skip the close paren
1295 if(_curchar != ';') { // check for semi-colon
1296 parse_err(SYNERR, "missing %c in return value entry.\n", ';');
1297 return;
1298 }
1299 next_char(); // skip the semi-colon
1301 // Check ident for validity
1302 if (_AD._pipeline && !_AD._pipeline->_classlist.search(ident)) {
1303 parse_err(SYNERR, "\"%s\" is not a valid pipeline class\n", ident);
1304 return;
1305 }
1307 // Add this instruction to the list in the pipeline class
1308 _AD._pipeline->_classdict[ident]->is_pipeclass()->_instructs.addName(instr._ident);
1310 // Set the name of the pipeline class in the instruction
1311 instr._ins_pipe = ident;
1312 return;
1313 }
1315 //------------------------------pipe_parse-------------------------------------
1316 void ADLParser::pipe_parse(void) {
1317 PipelineForm *pipeline; // Encode class for instruction/operand
1318 char * ident;
1320 pipeline = new PipelineForm(); // Build new Source object
1321 _AD.addForm(pipeline);
1323 skipws(); // Skip leading whitespace
1324 // Check for block delimiter
1325 if ( (_curchar != '%')
1326 || ( next_char(), (_curchar != '{')) ) {
1327 parse_err(SYNERR, "missing '%%{' in pipeline definition\n");
1328 return;
1329 }
1330 next_char(); // Maintain the invariant
1331 do {
1332 ident = get_ident(); // Grab next identifier
1333 if (ident == NULL) {
1334 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar);
1335 continue;
1336 }
1337 if (!strcmp(ident, "resources" )) resource_parse(*pipeline);
1338 else if (!strcmp(ident, "pipe_desc" )) pipe_desc_parse(*pipeline);
1339 else if (!strcmp(ident, "pipe_class")) pipe_class_parse(*pipeline);
1340 else if (!strcmp(ident, "define")) {
1341 skipws();
1342 if ( (_curchar != '%')
1343 || ( next_char(), (_curchar != '{')) ) {
1344 parse_err(SYNERR, "expected '%%{'\n");
1345 return;
1346 }
1347 next_char(); skipws();
1349 char *node_class = get_ident();
1350 if (node_class == NULL) {
1351 parse_err(SYNERR, "expected identifier, found \"%c\"\n", _curchar);
1352 return;
1353 }
1355 skipws();
1356 if (_curchar != ',' && _curchar != '=') {
1357 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar);
1358 break;
1359 }
1360 next_char(); skipws();
1362 char *pipe_class = get_ident();
1363 if (pipe_class == NULL) {
1364 parse_err(SYNERR, "expected identifier, found \"%c\"\n", _curchar);
1365 return;
1366 }
1367 if (_curchar != ';' ) {
1368 parse_err(SYNERR, "expected `;`, found '%c'\n", _curchar);
1369 break;
1370 }
1371 next_char(); // Skip over semi-colon
1373 skipws();
1374 if ( (_curchar != '%')
1375 || ( next_char(), (_curchar != '}')) ) {
1376 parse_err(SYNERR, "expected '%%}', found \"%c\"\n", _curchar);
1377 }
1378 next_char();
1380 // Check ident for validity
1381 if (_AD._pipeline && !_AD._pipeline->_classlist.search(pipe_class)) {
1382 parse_err(SYNERR, "\"%s\" is not a valid pipeline class\n", pipe_class);
1383 return;
1384 }
1386 // Add this machine node to the list in the pipeline class
1387 _AD._pipeline->_classdict[pipe_class]->is_pipeclass()->_instructs.addName(node_class);
1389 MachNodeForm *machnode = new MachNodeForm(node_class); // Create new machnode form
1390 machnode->_machnode_pipe = pipe_class;
1392 _AD.addForm(machnode);
1393 }
1394 else if (!strcmp(ident, "attributes")) {
1395 bool vsi_seen = false;
1397 skipws();
1398 if ( (_curchar != '%')
1399 || ( next_char(), (_curchar != '{')) ) {
1400 parse_err(SYNERR, "expected '%%{'\n");
1401 return;
1402 }
1403 next_char(); skipws();
1405 while (_curchar != '%') {
1406 ident = get_ident();
1407 if (ident == NULL)
1408 break;
1410 if (!strcmp(ident, "variable_size_instructions")) {
1411 skipws();
1412 if (_curchar == ';') {
1413 next_char(); skipws();
1414 }
1416 pipeline->_variableSizeInstrs = true;
1417 vsi_seen = true;
1418 continue;
1419 }
1421 if (!strcmp(ident, "fixed_size_instructions")) {
1422 skipws();
1423 if (_curchar == ';') {
1424 next_char(); skipws();
1425 }
1427 pipeline->_variableSizeInstrs = false;
1428 vsi_seen = true;
1429 continue;
1430 }
1432 if (!strcmp(ident, "branch_has_delay_slot")) {
1433 skipws();
1434 if (_curchar == ';') {
1435 next_char(); skipws();
1436 }
1438 pipeline->_branchHasDelaySlot = true;
1439 continue;
1440 }
1442 if (!strcmp(ident, "max_instructions_per_bundle")) {
1443 skipws();
1444 if (_curchar != '=') {
1445 parse_err(SYNERR, "expected `=`\n");
1446 break;
1447 }
1449 next_char(); skipws();
1450 pipeline->_maxInstrsPerBundle = get_int();
1451 skipws();
1453 if (_curchar == ';') {
1454 next_char(); skipws();
1455 }
1457 continue;
1458 }
1460 if (!strcmp(ident, "max_bundles_per_cycle")) {
1461 skipws();
1462 if (_curchar != '=') {
1463 parse_err(SYNERR, "expected `=`\n");
1464 break;
1465 }
1467 next_char(); skipws();
1468 pipeline->_maxBundlesPerCycle = get_int();
1469 skipws();
1471 if (_curchar == ';') {
1472 next_char(); skipws();
1473 }
1475 continue;
1476 }
1478 if (!strcmp(ident, "instruction_unit_size")) {
1479 skipws();
1480 if (_curchar != '=') {
1481 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar);
1482 break;
1483 }
1485 next_char(); skipws();
1486 pipeline->_instrUnitSize = get_int();
1487 skipws();
1489 if (_curchar == ';') {
1490 next_char(); skipws();
1491 }
1493 continue;
1494 }
1496 if (!strcmp(ident, "bundle_unit_size")) {
1497 skipws();
1498 if (_curchar != '=') {
1499 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar);
1500 break;
1501 }
1503 next_char(); skipws();
1504 pipeline->_bundleUnitSize = get_int();
1505 skipws();
1507 if (_curchar == ';') {
1508 next_char(); skipws();
1509 }
1511 continue;
1512 }
1514 if (!strcmp(ident, "instruction_fetch_unit_size")) {
1515 skipws();
1516 if (_curchar != '=') {
1517 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar);
1518 break;
1519 }
1521 next_char(); skipws();
1522 pipeline->_instrFetchUnitSize = get_int();
1523 skipws();
1525 if (_curchar == ';') {
1526 next_char(); skipws();
1527 }
1529 continue;
1530 }
1532 if (!strcmp(ident, "instruction_fetch_units")) {
1533 skipws();
1534 if (_curchar != '=') {
1535 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar);
1536 break;
1537 }
1539 next_char(); skipws();
1540 pipeline->_instrFetchUnits = get_int();
1541 skipws();
1543 if (_curchar == ';') {
1544 next_char(); skipws();
1545 }
1547 continue;
1548 }
1550 if (!strcmp(ident, "nops")) {
1551 skipws();
1552 if (_curchar != '(') {
1553 parse_err(SYNERR, "expected `(`, found '%c'\n", _curchar);
1554 break;
1555 }
1557 next_char(); skipws();
1559 while (_curchar != ')') {
1560 ident = get_ident();
1561 if (ident == NULL) {
1562 parse_err(SYNERR, "expected identifier for nop instruction, found '%c'\n", _curchar);
1563 break;
1564 }
1566 pipeline->_noplist.addName(ident);
1567 pipeline->_nopcnt++;
1568 skipws();
1570 if (_curchar == ',') {
1571 next_char(); skipws();
1572 }
1573 }
1575 next_char(); skipws();
1577 if (_curchar == ';') {
1578 next_char(); skipws();
1579 }
1581 continue;
1582 }
1584 parse_err(SYNERR, "unknown specifier \"%s\"\n", ident);
1585 }
1587 if ( (_curchar != '%')
1588 || ( next_char(), (_curchar != '}')) ) {
1589 parse_err(SYNERR, "expected '%%}', found \"%c\"\n", _curchar);
1590 }
1591 next_char(); skipws();
1593 if (pipeline->_maxInstrsPerBundle == 0)
1594 parse_err(SYNERR, "\"max_instructions_per_bundle\" unspecified\n");
1595 if (pipeline->_instrUnitSize == 0 && pipeline->_bundleUnitSize == 0)
1596 parse_err(SYNERR, "\"instruction_unit_size\" and \"bundle_unit_size\" unspecified\n");
1597 if (pipeline->_instrFetchUnitSize == 0)
1598 parse_err(SYNERR, "\"instruction_fetch_unit_size\" unspecified\n");
1599 if (pipeline->_instrFetchUnits == 0)
1600 parse_err(SYNERR, "\"instruction_fetch_units\" unspecified\n");
1601 if (!vsi_seen)
1602 parse_err(SYNERR, "\"variable_size_instruction\" or \"fixed_size_instruction\" unspecified\n");
1603 }
1604 else { // Done with staticly defined parts of instruction definition
1605 parse_err(SYNERR, "expected one of \"resources\", \"pipe_desc\", \"pipe_class\", found \"%s\"\n", ident);
1606 return;
1607 }
1608 skipws();
1609 if (_curchar == ';')
1610 skipws();
1611 } while(_curchar != '%');
1613 next_char();
1614 if (_curchar != '}') {
1615 parse_err(SYNERR, "missing \"%%}\" in pipeline definition\n");
1616 return;
1617 }
1619 next_char();
1620 }
1622 //------------------------------resource_parse----------------------------
1623 void ADLParser::resource_parse(PipelineForm &pipeline) {
1624 ResourceForm *resource;
1625 char * ident;
1626 char * expr;
1627 unsigned mask;
1628 pipeline._rescount = 0;
1630 skipws(); // Skip leading whitespace
1632 if (_curchar != '(') {
1633 parse_err(SYNERR, "missing \"(\" in resource definition\n");
1634 return;
1635 }
1637 do {
1638 next_char(); // Skip "(" or ","
1639 ident = get_ident(); // Grab next identifier
1641 if (_AD._adl_debug > 1) {
1642 if (ident != NULL) {
1643 fprintf(stderr, "resource_parse: identifier: %s\n", ident);
1644 }
1645 }
1647 if (ident == NULL) {
1648 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
1649 return;
1650 }
1651 skipws();
1653 if (_curchar != '=') {
1654 mask = (1 << pipeline._rescount++);
1655 }
1656 else {
1657 next_char(); skipws();
1658 expr = get_ident(); // Grab next identifier
1659 if (expr == NULL) {
1660 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
1661 return;
1662 }
1663 resource = (ResourceForm *) pipeline._resdict[expr];
1664 if (resource == NULL) {
1665 parse_err(SYNERR, "resource \"%s\" is not defined\n", expr);
1666 return;
1667 }
1668 mask = resource->mask();
1670 skipws();
1671 while (_curchar == '|') {
1672 next_char(); skipws();
1674 expr = get_ident(); // Grab next identifier
1675 if (expr == NULL) {
1676 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
1677 return;
1678 }
1680 resource = (ResourceForm *) pipeline._resdict[expr]; // Look up the value
1681 if (resource == NULL) {
1682 parse_err(SYNERR, "resource \"%s\" is not defined\n", expr);
1683 return;
1684 }
1686 mask |= resource->mask();
1687 skipws();
1688 }
1689 }
1691 resource = new ResourceForm(mask);
1693 pipeline._resdict.Insert(ident, resource);
1694 pipeline._reslist.addName(ident);
1695 } while (_curchar == ',');
1697 if (_curchar != ')') {
1698 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
1699 return;
1700 }
1702 next_char(); // Skip ")"
1703 if (_curchar == ';')
1704 next_char(); // Skip ";"
1705 }
1707 //------------------------------resource_parse----------------------------
1708 void ADLParser::pipe_desc_parse(PipelineForm &pipeline) {
1709 char * ident;
1711 skipws(); // Skip leading whitespace
1713 if (_curchar != '(') {
1714 parse_err(SYNERR, "missing \"(\" in pipe_desc definition\n");
1715 return;
1716 }
1718 do {
1719 next_char(); // Skip "(" or ","
1720 ident = get_ident(); // Grab next identifier
1721 if (ident == NULL) {
1722 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
1723 return;
1724 }
1726 // Add the name to the list
1727 pipeline._stages.addName(ident);
1728 pipeline._stagecnt++;
1730 skipws();
1731 } while (_curchar == ',');
1733 if (_curchar != ')') {
1734 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
1735 return;
1736 }
1738 next_char(); // Skip ")"
1739 if (_curchar == ';')
1740 next_char(); // Skip ";"
1741 }
1743 //------------------------------pipe_class_parse--------------------------
1744 void ADLParser::pipe_class_parse(PipelineForm &pipeline) {
1745 PipeClassForm *pipe_class;
1746 char * ident;
1747 char * stage;
1748 char * read_or_write;
1749 int is_write;
1750 int is_read;
1751 OperandForm *oper;
1753 skipws(); // Skip leading whitespace
1755 ident = get_ident(); // Grab next identifier
1757 if (ident == NULL) {
1758 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
1759 return;
1760 }
1762 // Create a record for the pipe_class
1763 pipe_class = new PipeClassForm(ident, ++pipeline._classcnt);
1764 pipeline._classdict.Insert(ident, pipe_class);
1765 pipeline._classlist.addName(ident);
1767 // Then get the operands
1768 skipws();
1769 if (_curchar != '(') {
1770 parse_err(SYNERR, "missing \"(\" in pipe_class definition\n");
1771 }
1772 // Parse the operand list
1773 else get_oplist(pipe_class->_parameters, pipe_class->_localNames);
1774 skipws(); // Skip leading whitespace
1775 // Check for block delimiter
1776 if ( (_curchar != '%')
1777 || ( next_char(), (_curchar != '{')) ) {
1778 parse_err(SYNERR, "missing \"%%{\" in pipe_class definition\n");
1779 return;
1780 }
1781 next_char();
1783 do {
1784 ident = get_ident(); // Grab next identifier
1785 if (ident == NULL) {
1786 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
1787 continue;
1788 }
1789 skipws();
1791 if (!strcmp(ident, "fixed_latency")) {
1792 skipws();
1793 if (_curchar != '(') {
1794 parse_err(SYNERR, "missing \"(\" in latency definition\n");
1795 return;
1796 }
1797 next_char(); skipws();
1798 if( !isdigit(_curchar) ) {
1799 parse_err(SYNERR, "number expected for \"%c\" in latency definition\n", _curchar);
1800 return;
1801 }
1802 int fixed_latency = get_int();
1803 skipws();
1804 if (_curchar != ')') {
1805 parse_err(SYNERR, "missing \")\" in latency definition\n");
1806 return;
1807 }
1808 next_char(); skipws();
1809 if (_curchar != ';') {
1810 parse_err(SYNERR, "missing \";\" in latency definition\n");
1811 return;
1812 }
1814 pipe_class->setFixedLatency(fixed_latency);
1815 next_char(); skipws();
1816 continue;
1817 }
1819 if (!strcmp(ident, "zero_instructions") ||
1820 !strcmp(ident, "no_instructions")) {
1821 skipws();
1822 if (_curchar != ';') {
1823 parse_err(SYNERR, "missing \";\" in latency definition\n");
1824 return;
1825 }
1827 pipe_class->setInstructionCount(0);
1828 next_char(); skipws();
1829 continue;
1830 }
1832 if (!strcmp(ident, "one_instruction_with_delay_slot") ||
1833 !strcmp(ident, "single_instruction_with_delay_slot")) {
1834 skipws();
1835 if (_curchar != ';') {
1836 parse_err(SYNERR, "missing \";\" in latency definition\n");
1837 return;
1838 }
1840 pipe_class->setInstructionCount(1);
1841 pipe_class->setBranchDelay(true);
1842 next_char(); skipws();
1843 continue;
1844 }
1846 if (!strcmp(ident, "one_instruction") ||
1847 !strcmp(ident, "single_instruction")) {
1848 skipws();
1849 if (_curchar != ';') {
1850 parse_err(SYNERR, "missing \";\" in latency definition\n");
1851 return;
1852 }
1854 pipe_class->setInstructionCount(1);
1855 next_char(); skipws();
1856 continue;
1857 }
1859 if (!strcmp(ident, "instructions_in_first_bundle") ||
1860 !strcmp(ident, "instruction_count")) {
1861 skipws();
1863 int number_of_instructions = 1;
1865 if (_curchar != '(') {
1866 parse_err(SYNERR, "\"(\" expected at \"%c\"\n", _curchar);
1867 continue;
1868 }
1870 next_char(); skipws();
1871 number_of_instructions = get_int();
1873 skipws();
1874 if (_curchar != ')') {
1875 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
1876 continue;
1877 }
1879 next_char(); skipws();
1880 if (_curchar != ';') {
1881 parse_err(SYNERR, "missing \";\" in latency definition\n");
1882 return;
1883 }
1885 pipe_class->setInstructionCount(number_of_instructions);
1886 next_char(); skipws();
1887 continue;
1888 }
1890 if (!strcmp(ident, "multiple_bundles")) {
1891 skipws();
1892 if (_curchar != ';') {
1893 parse_err(SYNERR, "missing \";\" after multiple bundles\n");
1894 return;
1895 }
1897 pipe_class->setMultipleBundles(true);
1898 next_char(); skipws();
1899 continue;
1900 }
1902 if (!strcmp(ident, "has_delay_slot")) {
1903 skipws();
1904 if (_curchar != ';') {
1905 parse_err(SYNERR, "missing \";\" after \"has_delay_slot\"\n");
1906 return;
1907 }
1909 pipe_class->setBranchDelay(true);
1910 next_char(); skipws();
1911 continue;
1912 }
1914 if (!strcmp(ident, "force_serialization")) {
1915 skipws();
1916 if (_curchar != ';') {
1917 parse_err(SYNERR, "missing \";\" after \"force_serialization\"\n");
1918 return;
1919 }
1921 pipe_class->setForceSerialization(true);
1922 next_char(); skipws();
1923 continue;
1924 }
1926 if (!strcmp(ident, "may_have_no_code")) {
1927 skipws();
1928 if (_curchar != ';') {
1929 parse_err(SYNERR, "missing \";\" after \"may_have_no_code\"\n");
1930 return;
1931 }
1933 pipe_class->setMayHaveNoCode(true);
1934 next_char(); skipws();
1935 continue;
1936 }
1938 const Form *parm = pipe_class->_localNames[ident];
1939 if (parm != NULL) {
1940 oper = parm->is_operand();
1941 if (oper == NULL && !parm->is_opclass()) {
1942 parse_err(SYNERR, "operand name expected at %s\n", ident);
1943 continue;
1944 }
1946 if (_curchar != ':') {
1947 parse_err(SYNERR, "\":\" expected at \"%c\"\n", _curchar);
1948 continue;
1949 }
1950 next_char(); skipws();
1951 stage = get_ident();
1952 if (stage == NULL) {
1953 parse_err(SYNERR, "pipeline stage identifier expected at \"%c\"\n", _curchar);
1954 continue;
1955 }
1957 skipws();
1958 if (_curchar != '(') {
1959 parse_err(SYNERR, "\"(\" expected at \"%c\"\n", _curchar);
1960 continue;
1961 }
1963 next_char();
1964 read_or_write = get_ident();
1965 if (read_or_write == NULL) {
1966 parse_err(SYNERR, "\"read\" or \"write\" expected at \"%c\"\n", _curchar);
1967 continue;
1968 }
1970 is_read = strcmp(read_or_write, "read") == 0;
1971 is_write = strcmp(read_or_write, "write") == 0;
1972 if (!is_read && !is_write) {
1973 parse_err(SYNERR, "\"read\" or \"write\" expected at \"%c\"\n", _curchar);
1974 continue;
1975 }
1977 skipws();
1978 if (_curchar != ')') {
1979 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
1980 continue;
1981 }
1983 next_char(); skipws();
1984 int more_instrs = 0;
1985 if (_curchar == '+') {
1986 next_char(); skipws();
1987 if (_curchar < '0' || _curchar > '9') {
1988 parse_err(SYNERR, "<number> expected at \"%c\"\n", _curchar);
1989 continue;
1990 }
1991 while (_curchar >= '0' && _curchar <= '9') {
1992 more_instrs *= 10;
1993 more_instrs += _curchar - '0';
1994 next_char();
1995 }
1996 skipws();
1997 }
1999 PipeClassOperandForm *pipe_operand = new PipeClassOperandForm(stage, is_write, more_instrs);
2000 pipe_class->_localUsage.Insert(ident, pipe_operand);
2002 if (_curchar == '%')
2003 continue;
2005 if (_curchar != ';') {
2006 parse_err(SYNERR, "\";\" expected at \"%c\"\n", _curchar);
2007 continue;
2008 }
2009 next_char(); skipws();
2010 continue;
2011 }
2013 // Scan for Resource Specifier
2014 const Form *res = pipeline._resdict[ident];
2015 if (res != NULL) {
2016 int cyclecnt = 1;
2017 if (_curchar != ':') {
2018 parse_err(SYNERR, "\":\" expected at \"%c\"\n", _curchar);
2019 continue;
2020 }
2021 next_char(); skipws();
2022 stage = get_ident();
2023 if (stage == NULL) {
2024 parse_err(SYNERR, "pipeline stage identifier expected at \"%c\"\n", _curchar);
2025 continue;
2026 }
2028 skipws();
2029 if (_curchar == '(') {
2030 next_char();
2031 cyclecnt = get_int();
2033 skipws();
2034 if (_curchar != ')') {
2035 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
2036 continue;
2037 }
2039 next_char(); skipws();
2040 }
2042 PipeClassResourceForm *resource = new PipeClassResourceForm(ident, stage, cyclecnt);
2043 int stagenum = pipeline._stages.index(stage);
2044 if (pipeline._maxcycleused < (stagenum+cyclecnt))
2045 pipeline._maxcycleused = (stagenum+cyclecnt);
2046 pipe_class->_resUsage.addForm(resource);
2048 if (_curchar == '%')
2049 continue;
2051 if (_curchar != ';') {
2052 parse_err(SYNERR, "\";\" expected at \"%c\"\n", _curchar);
2053 continue;
2054 }
2055 next_char(); skipws();
2056 continue;
2057 }
2059 parse_err(SYNERR, "resource expected at \"%s\"\n", ident);
2060 return;
2061 } while(_curchar != '%');
2063 next_char();
2064 if (_curchar != '}') {
2065 parse_err(SYNERR, "missing \"%%}\" in pipe_class definition\n");
2066 return;
2067 }
2069 next_char();
2070 }
2072 //------------------------------peep_parse-------------------------------------
2073 void ADLParser::peep_parse(void) {
2074 Peephole *peep; // Pointer to current peephole rule form
2075 char *desc = NULL; // String representation of rule
2077 skipws(); // Skip leading whitespace
2079 peep = new Peephole(); // Build new Peephole object
2080 // Check for open block sequence
2081 skipws(); // Skip leading whitespace
2082 if (_curchar == '%' && *(_ptr+1) == '{') {
2083 next_char(); next_char(); // Skip "%{"
2084 skipws();
2085 while (_curchar != '%' && *(_ptr+1) != '}') {
2086 char *token = get_ident();
2087 if (token == NULL) {
2088 parse_err(SYNERR, "missing identifier inside peephole rule.\n");
2089 return;
2090 }
2091 // check for legal subsections of peephole rule
2092 if (strcmp(token,"peepmatch")==0) {
2093 peep_match_parse(*peep); }
2094 else if (strcmp(token,"peepconstraint")==0) {
2095 peep_constraint_parse(*peep); }
2096 else if (strcmp(token,"peepreplace")==0) {
2097 peep_replace_parse(*peep); }
2098 else {
2099 parse_err(SYNERR, "expected peepmatch, peepconstraint, or peepreplace for identifier %s.\n", token);
2100 }
2101 skipws();
2102 }
2103 }
2104 else {
2105 parse_err(SYNERR, "Missing %%{ ... %%} block after peephole keyword.\n");
2106 return;
2107 }
2108 next_char(); // Skip past '%'
2109 next_char(); // Skip past '}'
2110 }
2112 // ******************** Private Level 2 Parse Functions ********************
2113 //------------------------------constraint_parse------------------------------
2114 Constraint *ADLParser::constraint_parse(void) {
2115 char *func;
2116 char *arg;
2118 // Check for constraint expression
2119 skipws();
2120 if (_curchar != '(') {
2121 parse_err(SYNERR, "missing constraint expression, (...)\n");
2122 return NULL;
2123 }
2124 next_char(); // Skip past '('
2126 // Get constraint function
2127 skipws();
2128 func = get_ident();
2129 if (func == NULL) {
2130 parse_err(SYNERR, "missing function in constraint expression.\n");
2131 return NULL;
2132 }
2133 if (strcmp(func,"ALLOC_IN_RC")==0
2134 || strcmp(func,"IS_R_CLASS")==0) {
2135 // Check for '(' before argument
2136 skipws();
2137 if (_curchar != '(') {
2138 parse_err(SYNERR, "missing '(' for constraint function's argument.\n");
2139 return NULL;
2140 }
2141 next_char();
2143 // Get it's argument
2144 skipws();
2145 arg = get_ident();
2146 if (arg == NULL) {
2147 parse_err(SYNERR, "missing argument for constraint function %s\n",func);
2148 return NULL;
2149 }
2150 // Check for ')' after argument
2151 skipws();
2152 if (_curchar != ')') {
2153 parse_err(SYNERR, "missing ')' after constraint function argument %s\n",arg);
2154 return NULL;
2155 }
2156 next_char();
2157 } else {
2158 parse_err(SYNERR, "Invalid constraint function %s\n",func);
2159 return NULL;
2160 }
2162 // Check for closing paren and ';'
2163 skipws();
2164 if (_curchar != ')') {
2165 parse_err(SYNERR, "Missing ')' for constraint function %s\n",func);
2166 return NULL;
2167 }
2168 next_char();
2169 skipws();
2170 if (_curchar != ';') {
2171 parse_err(SYNERR, "Missing ';' after constraint.\n");
2172 return NULL;
2173 }
2174 next_char();
2176 // Create new "Constraint"
2177 Constraint *constraint = new Constraint(func,arg);
2178 return constraint;
2179 }
2181 //------------------------------constr_parse-----------------------------------
2182 ConstructRule *ADLParser::construct_parse(void) {
2183 return NULL;
2184 }
2187 //------------------------------reg_def_parse----------------------------------
2188 void ADLParser::reg_def_parse(void) {
2189 char *rname; // Name of register being defined
2191 // Get register name
2192 skipws(); // Skip whitespace
2193 rname = get_ident();
2194 if (rname == NULL) {
2195 parse_err(SYNERR, "missing register name after reg_def\n");
2196 return;
2197 }
2199 // Check for definition of register calling convention (save on call, ...),
2200 // register save type, and register encoding value.
2201 skipws();
2202 char *callconv = NULL;
2203 char *c_conv = NULL;
2204 char *idealtype = NULL;
2205 char *encoding = NULL;
2206 char *concrete = NULL;
2207 if (_curchar == '(') {
2208 next_char();
2209 callconv = get_ident();
2210 // Parse the internal calling convention, must be NS, SOC, SOE, or AS.
2211 if (callconv == NULL) {
2212 parse_err(SYNERR, "missing register calling convention value\n");
2213 return;
2214 }
2215 if(strcmp(callconv, "SOC") && strcmp(callconv,"SOE") &&
2216 strcmp(callconv, "NS") && strcmp(callconv, "AS")) {
2217 parse_err(SYNERR, "invalid value for register calling convention\n");
2218 }
2219 skipws();
2220 if (_curchar != ',') {
2221 parse_err(SYNERR, "missing comma in register definition statement\n");
2222 return;
2223 }
2224 next_char();
2226 // Parse the native calling convention, must be NS, SOC, SOE, AS
2227 c_conv = get_ident();
2228 if (c_conv == NULL) {
2229 parse_err(SYNERR, "missing register native calling convention value\n");
2230 return;
2231 }
2232 if(strcmp(c_conv, "SOC") && strcmp(c_conv,"SOE") &&
2233 strcmp(c_conv, "NS") && strcmp(c_conv, "AS")) {
2234 parse_err(SYNERR, "invalid value for register calling convention\n");
2235 }
2236 skipws();
2237 if (_curchar != ',') {
2238 parse_err(SYNERR, "missing comma in register definition statement\n");
2239 return;
2240 }
2241 next_char();
2242 skipws();
2244 // Parse the ideal save type
2245 idealtype = get_ident();
2246 if (idealtype == NULL) {
2247 parse_err(SYNERR, "missing register save type value\n");
2248 return;
2249 }
2250 skipws();
2251 if (_curchar != ',') {
2252 parse_err(SYNERR, "missing comma in register definition statement\n");
2253 return;
2254 }
2255 next_char();
2256 skipws();
2258 // Parse the encoding value
2259 encoding = get_expr("encoding", ",");
2260 if (encoding == NULL) {
2261 parse_err(SYNERR, "missing register encoding value\n");
2262 return;
2263 }
2264 trim(encoding);
2265 if (_curchar != ',') {
2266 parse_err(SYNERR, "missing comma in register definition statement\n");
2267 return;
2268 }
2269 next_char();
2270 skipws();
2271 // Parse the concrete name type
2272 // concrete = get_ident();
2273 concrete = get_expr("concrete", ")");
2274 if (concrete == NULL) {
2275 parse_err(SYNERR, "missing vm register name value\n");
2276 return;
2277 }
2279 if (_curchar != ')') {
2280 parse_err(SYNERR, "missing ')' in register definition statement\n");
2281 return;
2282 }
2283 next_char();
2284 }
2286 // Check for closing ';'
2287 skipws();
2288 if (_curchar != ';') {
2289 parse_err(SYNERR, "missing ';' after reg_def\n");
2290 return;
2291 }
2292 next_char(); // move past ';'
2294 // Debug Stuff
2295 if (_AD._adl_debug > 1) {
2296 fprintf(stderr,"Register Definition: %s ( %s, %s %s )\n", rname,
2297 (callconv ? callconv : ""), (c_conv ? c_conv : ""), concrete);
2298 }
2300 // Record new register definition.
2301 _AD._register->addRegDef(rname, callconv, c_conv, idealtype, encoding, concrete);
2302 return;
2303 }
2305 //------------------------------reg_class_parse--------------------------------
2306 void ADLParser::reg_class_parse(void) {
2307 char *cname; // Name of register class being defined
2309 // Get register class name
2310 skipws(); // Skip leading whitespace
2311 cname = get_ident();
2312 if (cname == NULL) {
2313 parse_err(SYNERR, "missing register class name after 'reg_class'\n");
2314 return;
2315 }
2316 // Debug Stuff
2317 if (_AD._adl_debug >1) fprintf(stderr,"Register Class: %s\n", cname);
2319 RegClass *reg_class = _AD._register->addRegClass(cname);
2321 // Collect registers in class
2322 skipws();
2323 if (_curchar == '(') {
2324 next_char(); // Skip '('
2325 skipws();
2326 while (_curchar != ')') {
2327 char *rname = get_ident();
2328 if (rname==NULL) {
2329 parse_err(SYNERR, "missing identifier inside reg_class list.\n");
2330 return;
2331 }
2332 RegDef *regDef = _AD._register->getRegDef(rname);
2333 if (!regDef) {
2334 parse_err(SEMERR, "unknown identifier %s inside reg_class list.\n", rname);
2335 } else {
2336 reg_class->addReg(regDef); // add regDef to regClass
2337 }
2339 // Check for ',' and position to next token.
2340 skipws();
2341 if (_curchar == ',') {
2342 next_char(); // Skip trailing ','
2343 skipws();
2344 }
2345 }
2346 next_char(); // Skip closing ')'
2347 } else if (_curchar == '%') {
2348 char *code = find_cpp_block("reg class");
2349 if (code == NULL) {
2350 parse_err(SYNERR, "missing code declaration for reg class.\n");
2351 return;
2352 }
2353 reg_class->_user_defined = code;
2354 return;
2355 }
2357 // Check for terminating ';'
2358 skipws();
2359 if (_curchar != ';') {
2360 parse_err(SYNERR, "missing ';' at end of reg_class definition.\n");
2361 return;
2362 }
2363 next_char(); // Skip trailing ';'
2365 // Check RegClass size, must be <= 32 registers in class.
2367 return;
2368 }
2370 //------------------------------alloc_class_parse------------------------------
2371 void ADLParser::alloc_class_parse(void) {
2372 char *name; // Name of allocation class being defined
2374 // Get allocation class name
2375 skipws(); // Skip leading whitespace
2376 name = get_ident();
2377 if (name == NULL) {
2378 parse_err(SYNERR, "missing allocation class name after 'reg_class'\n");
2379 return;
2380 }
2381 // Debug Stuff
2382 if (_AD._adl_debug >1) fprintf(stderr,"Allocation Class: %s\n", name);
2384 AllocClass *alloc_class = _AD._register->addAllocClass(name);
2386 // Collect registers in class
2387 skipws();
2388 if (_curchar == '(') {
2389 next_char(); // Skip '('
2390 skipws();
2391 while (_curchar != ')') {
2392 char *rname = get_ident();
2393 if (rname==NULL) {
2394 parse_err(SYNERR, "missing identifier inside reg_class list.\n");
2395 return;
2396 }
2397 // Check if name is a RegDef
2398 RegDef *regDef = _AD._register->getRegDef(rname);
2399 if (regDef) {
2400 alloc_class->addReg(regDef); // add regDef to allocClass
2401 } else {
2403 // name must be a RegDef or a RegClass
2404 parse_err(SYNERR, "name %s should be a previously defined reg_def.\n", rname);
2405 return;
2406 }
2408 // Check for ',' and position to next token.
2409 skipws();
2410 if (_curchar == ',') {
2411 next_char(); // Skip trailing ','
2412 skipws();
2413 }
2414 }
2415 next_char(); // Skip closing ')'
2416 }
2418 // Check for terminating ';'
2419 skipws();
2420 if (_curchar != ';') {
2421 parse_err(SYNERR, "missing ';' at end of reg_class definition.\n");
2422 return;
2423 }
2424 next_char(); // Skip trailing ';'
2426 return;
2427 }
2429 //------------------------------peep_match_child_parse-------------------------
2430 InstructForm *ADLParser::peep_match_child_parse(PeepMatch &match, int parent, int &position, int input){
2431 char *token = NULL;
2432 int lparen = 0; // keep track of parenthesis nesting depth
2433 int rparen = 0; // position of instruction at this depth
2434 InstructForm *inst_seen = NULL;
2436 // Walk the match tree,
2437 // Record <parent, position, instruction name, input position>
2438 while ( lparen >= rparen ) {
2439 skipws();
2440 // Left paren signals start of an input, collect with recursive call
2441 if (_curchar == '(') {
2442 ++lparen;
2443 next_char();
2444 ( void ) peep_match_child_parse(match, parent, position, rparen);
2445 }
2446 // Right paren signals end of an input, may be more
2447 else if (_curchar == ')') {
2448 ++rparen;
2449 if( rparen == lparen ) { // IF rparen matches an lparen I've seen
2450 next_char(); // move past ')'
2451 } else { // ELSE leave ')' for parent
2452 assert( rparen == lparen + 1, "Should only see one extra ')'");
2453 // if an instruction was not specified for this paren-pair
2454 if( ! inst_seen ) { // record signal entry
2455 match.add_instruction( parent, position, NameList::_signal, input );
2456 ++position;
2457 }
2458 // ++input; // TEMPORARY
2459 return inst_seen;
2460 }
2461 }
2462 // if no parens, then check for instruction name
2463 // This instruction is the parent of a sub-tree
2464 else if ((token = get_ident_dup()) != NULL) {
2465 const Form *form = _AD._globalNames[token];
2466 if (form) {
2467 InstructForm *inst = form->is_instruction();
2468 // Record the first instruction at this level
2469 if( inst_seen == NULL ) {
2470 inst_seen = inst;
2471 }
2472 if (inst) {
2473 match.add_instruction( parent, position, token, input );
2474 parent = position;
2475 ++position;
2476 } else {
2477 parse_err(SYNERR, "instruction name expected at identifier %s.\n",
2478 token);
2479 return inst_seen;
2480 }
2481 }
2482 else {
2483 parse_err(SYNERR, "missing identifier in peepmatch rule.\n");
2484 return NULL;
2485 }
2486 }
2487 else {
2488 parse_err(SYNERR, "missing identifier in peepmatch rule.\n");
2489 return NULL;
2490 }
2492 } // end while
2494 assert( false, "ShouldNotReachHere();");
2495 return NULL;
2496 }
2498 //------------------------------peep_match_parse-------------------------------
2499 // Syntax for a peepmatch rule
2500 //
2501 // peepmatch ( root_instr_name [(instruction subtree)] [,(instruction subtree)]* );
2502 //
2503 void ADLParser::peep_match_parse(Peephole &peep) {
2505 skipws();
2506 // Check the structure of the rule
2507 // Check for open paren
2508 if (_curchar != '(') {
2509 parse_err(SYNERR, "missing '(' at start of peepmatch rule.\n");
2510 return;
2511 }
2512 next_char(); // skip '('
2514 // Construct PeepMatch and parse the peepmatch rule.
2515 PeepMatch *match = new PeepMatch(_ptr);
2516 int parent = -1; // parent of root
2517 int position = 0; // zero-based positions
2518 int input = 0; // input position in parent's operands
2519 InstructForm *root= peep_match_child_parse( *match, parent, position, input);
2520 if( root == NULL ) {
2521 parse_err(SYNERR, "missing instruction-name at start of peepmatch.\n");
2522 return;
2523 }
2525 if( _curchar != ')' ) {
2526 parse_err(SYNERR, "missing ')' at end of peepmatch.\n");
2527 return;
2528 }
2529 next_char(); // skip ')'
2531 // Check for closing semicolon
2532 skipws();
2533 if( _curchar != ';' ) {
2534 parse_err(SYNERR, "missing ';' at end of peepmatch.\n");
2535 return;
2536 }
2537 next_char(); // skip ';'
2539 // Store match into peep, and store peep into instruction
2540 peep.add_match(match);
2541 root->append_peephole(&peep);
2542 }
2544 //------------------------------peep_constraint_parse--------------------------
2545 // Syntax for a peepconstraint rule
2546 // A parenthesized list of relations between operands in peepmatch subtree
2547 //
2548 // peepconstraint %{
2549 // (instruction_number.operand_name
2550 // relational_op
2551 // instruction_number.operand_name OR register_name
2552 // [, ...] );
2553 //
2554 // // instruction numbers are zero-based using topological order in peepmatch
2555 //
2556 void ADLParser::peep_constraint_parse(Peephole &peep) {
2558 skipws();
2559 // Check the structure of the rule
2560 // Check for open paren
2561 if (_curchar != '(') {
2562 parse_err(SYNERR, "missing '(' at start of peepconstraint rule.\n");
2563 return;
2564 }
2565 else {
2566 next_char(); // Skip '('
2567 }
2569 // Check for a constraint
2570 skipws();
2571 while( _curchar != ')' ) {
2572 // Get information on the left instruction and its operand
2573 // left-instructions's number
2574 int left_inst = get_int();
2575 // Left-instruction's operand
2576 skipws();
2577 if( _curchar != '.' ) {
2578 parse_err(SYNERR, "missing '.' in peepconstraint after instruction number.\n");
2579 return;
2580 }
2581 next_char(); // Skip '.'
2582 char *left_op = get_ident_dup();
2584 skipws();
2585 // Collect relational operator
2586 char *relation = get_relation_dup();
2588 skipws();
2589 // Get information on the right instruction and its operand
2590 int right_inst; // Right-instructions's number
2591 if( isdigit(_curchar) ) {
2592 right_inst = get_int();
2593 // Right-instruction's operand
2594 skipws();
2595 if( _curchar != '.' ) {
2596 parse_err(SYNERR, "missing '.' in peepconstraint after instruction number.\n");
2597 return;
2598 }
2599 next_char(); // Skip '.'
2600 } else {
2601 right_inst = -1; // Flag as being a register constraint
2602 }
2604 char *right_op = get_ident_dup();
2606 // Construct the next PeepConstraint
2607 PeepConstraint *constraint = new PeepConstraint( left_inst, left_op,
2608 relation,
2609 right_inst, right_op );
2610 // And append it to the list for this peephole rule
2611 peep.append_constraint( constraint );
2613 // Check for another constraint, or end of rule
2614 skipws();
2615 if( _curchar == ',' ) {
2616 next_char(); // Skip ','
2617 skipws();
2618 }
2619 else if( _curchar != ')' ) {
2620 parse_err(SYNERR, "expected ',' or ')' after peephole constraint.\n");
2621 return;
2622 }
2623 } // end while( processing constraints )
2624 next_char(); // Skip ')'
2626 // Check for terminating ';'
2627 skipws();
2628 if (_curchar != ';') {
2629 parse_err(SYNERR, "missing ';' at end of peepconstraint.\n");
2630 return;
2631 }
2632 next_char(); // Skip trailing ';'
2633 }
2636 //------------------------------peep_replace_parse-----------------------------
2637 // Syntax for a peepreplace rule
2638 // root instruction name followed by a
2639 // parenthesized list of whitespace separated instruction.operand specifiers
2640 //
2641 // peepreplace ( instr_name ( [instruction_number.operand_name]* ) );
2642 //
2643 //
2644 void ADLParser::peep_replace_parse(Peephole &peep) {
2645 int lparen = 0; // keep track of parenthesis nesting depth
2646 int rparen = 0; // keep track of parenthesis nesting depth
2647 int icount = 0; // count of instructions in rule for naming
2648 char *str = NULL;
2649 char *token = NULL;
2651 skipws();
2652 // Check for open paren
2653 if (_curchar != '(') {
2654 parse_err(SYNERR, "missing '(' at start of peepreplace rule.\n");
2655 return;
2656 }
2657 else {
2658 lparen++;
2659 next_char();
2660 }
2662 // Check for root instruction
2663 char *inst = get_ident_dup();
2664 const Form *form = _AD._globalNames[inst];
2665 if( form == NULL || form->is_instruction() == NULL ) {
2666 parse_err(SYNERR, "Instruction name expected at start of peepreplace.\n");
2667 return;
2668 }
2670 // Store string representation of rule into replace
2671 PeepReplace *replace = new PeepReplace(str);
2672 replace->add_instruction( inst );
2674 skipws();
2675 // Start of root's operand-list
2676 if (_curchar != '(') {
2677 parse_err(SYNERR, "missing '(' at peepreplace root's operand-list.\n");
2678 return;
2679 }
2680 else {
2681 lparen++;
2682 next_char();
2683 }
2685 skipws();
2686 // Get the list of operands
2687 while( _curchar != ')' ) {
2688 // Get information on an instruction and its operand
2689 // instructions's number
2690 int inst_num = get_int();
2691 // Left-instruction's operand
2692 skipws();
2693 if( _curchar != '.' ) {
2694 parse_err(SYNERR, "missing '.' in peepreplace after instruction number.\n");
2695 return;
2696 }
2697 next_char(); // Skip '.'
2698 char *inst_op = get_ident_dup();
2699 if( inst_op == NULL ) {
2700 parse_err(SYNERR, "missing operand identifier in peepreplace.\n");
2701 return;
2702 }
2704 // Record this operand's position in peepmatch
2705 replace->add_operand( inst_num, inst_op );
2706 skipws();
2707 }
2709 // Check for the end of operands list
2710 skipws();
2711 assert( _curchar == ')', "While loop should have advanced to ')'.");
2712 next_char(); // Skip ')'
2714 skipws();
2715 // Check for end of peepreplace
2716 if( _curchar != ')' ) {
2717 parse_err(SYNERR, "missing ')' at end of peepmatch.\n");
2718 parse_err(SYNERR, "Support one replacement instruction.\n");
2719 return;
2720 }
2721 next_char(); // Skip ')'
2723 // Check for closing semicolon
2724 skipws();
2725 if( _curchar != ';' ) {
2726 parse_err(SYNERR, "missing ';' at end of peepreplace.\n");
2727 return;
2728 }
2729 next_char(); // skip ';'
2731 // Store replace into peep
2732 peep.add_replace( replace );
2733 }
2735 //------------------------------pred_parse-------------------------------------
2736 Predicate *ADLParser::pred_parse(void) {
2737 Predicate *predicate; // Predicate class for operand
2738 char *rule = NULL; // String representation of predicate
2740 skipws(); // Skip leading whitespace
2741 int line = linenum();
2742 if ( (rule = get_paren_expr("pred expression", true)) == NULL ) {
2743 parse_err(SYNERR, "incorrect or missing expression for 'predicate'\n");
2744 return NULL;
2745 }
2746 // Debug Stuff
2747 if (_AD._adl_debug > 1) fprintf(stderr,"Predicate: %s\n", rule);
2748 if (_curchar != ';') {
2749 parse_err(SYNERR, "missing ';' in predicate definition\n");
2750 return NULL;
2751 }
2752 next_char(); // Point after the terminator
2754 predicate = new Predicate(rule); // Build new predicate object
2755 skipws();
2756 return predicate;
2757 }
2760 //------------------------------ins_encode_parse_block-------------------------
2761 // Parse the block form of ins_encode. See ins_encode_parse for more details
2762 void ADLParser::ins_encode_parse_block(InstructForm& inst) {
2763 // Create a new encoding name based on the name of the instruction
2764 // definition, which should be unique.
2765 const char* prefix = "__ins_encode_";
2766 char* ec_name = (char*) malloc(strlen(inst._ident) + strlen(prefix) + 1);
2767 sprintf(ec_name, "%s%s", prefix, inst._ident);
2769 assert(_AD._encode->encClass(ec_name) == NULL, "shouldn't already exist");
2770 EncClass* encoding = _AD._encode->add_EncClass(ec_name);
2771 encoding->_linenum = linenum();
2773 // synthesize the arguments list for the enc_class from the
2774 // arguments to the instruct definition.
2775 const char* param = NULL;
2776 inst._parameters.reset();
2777 while ((param = inst._parameters.iter()) != NULL) {
2778 OperandForm* opForm = (OperandForm*) inst._localNames[param];
2779 encoding->add_parameter(opForm->_ident, param);
2780 }
2782 // Define a MacroAssembler instance for use by the encoding. The
2783 // name is chosen to match the __ idiom used for assembly in other
2784 // parts of hotspot and assumes the existence of the standard
2785 // #define __ _masm.
2786 encoding->add_code(" MacroAssembler _masm(&cbuf);\n");
2788 // Parse the following %{ }% block
2789 ins_encode_parse_block_impl(inst, encoding, ec_name);
2791 // Build an encoding rule which invokes the encoding rule we just
2792 // created, passing all arguments that we received.
2793 InsEncode* encrule = new InsEncode(); // Encode class for instruction
2794 NameAndList* params = encrule->add_encode(ec_name);
2795 inst._parameters.reset();
2796 while ((param = inst._parameters.iter()) != NULL) {
2797 params->add_entry(param);
2798 }
2800 // Check for duplicate ins_encode sections after parsing the block
2801 // so that parsing can continue and find any other errors.
2802 if (inst._insencode != NULL) {
2803 parse_err(SYNERR, "Multiple ins_encode sections defined\n");
2804 return;
2805 }
2807 // Set encode class of this instruction.
2808 inst._insencode = encrule;
2809 }
2812 void ADLParser::ins_encode_parse_block_impl(InstructForm& inst, EncClass* encoding, char* ec_name) {
2813 skipws_no_preproc(); // Skip leading whitespace
2814 // Prepend location descriptor, for debugging; cf. ADLParser::find_cpp_block
2815 if (_AD._adlocation_debug) {
2816 encoding->add_code(get_line_string());
2817 }
2819 // Collect the parts of the encode description
2820 // (1) strings that are passed through to output
2821 // (2) replacement/substitution variable, preceeded by a '$'
2822 while ((_curchar != '%') && (*(_ptr+1) != '}')) {
2824 // (1)
2825 // Check if there is a string to pass through to output
2826 char *start = _ptr; // Record start of the next string
2827 while ((_curchar != '$') && ((_curchar != '%') || (*(_ptr+1) != '}')) ) {
2828 // If at the start of a comment, skip past it
2829 if( (_curchar == '/') && ((*(_ptr+1) == '/') || (*(_ptr+1) == '*')) ) {
2830 skipws_no_preproc();
2831 } else {
2832 // ELSE advance to the next character, or start of the next line
2833 next_char_or_line();
2834 }
2835 }
2836 // If a string was found, terminate it and record in EncClass
2837 if (start != _ptr) {
2838 *_ptr = '\0'; // Terminate the string
2839 encoding->add_code(start);
2840 }
2842 // (2)
2843 // If we are at a replacement variable,
2844 // copy it and record in EncClass
2845 if (_curchar == '$') {
2846 // Found replacement Variable
2847 char* rep_var = get_rep_var_ident_dup();
2849 // Add flag to _strings list indicating we should check _rep_vars
2850 encoding->add_rep_var(rep_var);
2852 skipws();
2854 // Check if this instruct is a MachConstantNode.
2855 if (strcmp(rep_var, "constanttablebase") == 0) {
2856 // This instruct is a MachConstantNode.
2857 inst.set_is_mach_constant(true);
2859 if (_curchar == '(') {
2860 parse_err(SYNERR, "constanttablebase in instruct %s cannot have an argument (only constantaddress and constantoffset)", ec_name);
2861 return;
2862 }
2863 }
2864 else if ((strcmp(rep_var, "constantaddress") == 0) ||
2865 (strcmp(rep_var, "constantoffset") == 0)) {
2866 // This instruct is a MachConstantNode.
2867 inst.set_is_mach_constant(true);
2869 // If the constant keyword has an argument, parse it.
2870 if (_curchar == '(') constant_parse(inst);
2871 }
2872 }
2873 } // end while part of format description
2874 next_char(); // Skip '%'
2875 next_char(); // Skip '}'
2877 skipws();
2879 if (_AD._adlocation_debug) {
2880 encoding->add_code(end_line_marker());
2881 }
2883 // Debug Stuff
2884 if (_AD._adl_debug > 1) fprintf(stderr, "EncodingClass Form: %s\n", ec_name);
2885 }
2888 //------------------------------ins_encode_parse-------------------------------
2889 // Encode rules have the form
2890 // ins_encode( encode_class_name(parameter_list), ... );
2891 //
2892 // The "encode_class_name" must be defined in the encode section
2893 // The parameter list contains $names that are locals.
2894 //
2895 // Alternatively it can be written like this:
2896 //
2897 // ins_encode %{
2898 // ... // body
2899 // %}
2900 //
2901 // which synthesizes a new encoding class taking the same arguments as
2902 // the InstructForm, and automatically prefixes the definition with:
2903 //
2904 // MacroAssembler masm(&cbuf);\n");
2905 //
2906 // making it more compact to take advantage of the MacroAssembler and
2907 // placing the assembly closer to it's use by instructions.
2908 void ADLParser::ins_encode_parse(InstructForm& inst) {
2910 // Parse encode class name
2911 skipws(); // Skip whitespace
2912 if (_curchar != '(') {
2913 // Check for ins_encode %{ form
2914 if ((_curchar == '%') && (*(_ptr+1) == '{')) {
2915 next_char(); // Skip '%'
2916 next_char(); // Skip '{'
2918 // Parse the block form of ins_encode
2919 ins_encode_parse_block(inst);
2920 return;
2921 }
2923 parse_err(SYNERR, "missing '%%{' or '(' in ins_encode definition\n");
2924 return;
2925 }
2926 next_char(); // move past '('
2927 skipws();
2929 InsEncode *encrule = new InsEncode(); // Encode class for instruction
2930 encrule->_linenum = linenum();
2931 char *ec_name = NULL; // String representation of encode rule
2932 // identifier is optional.
2933 while (_curchar != ')') {
2934 ec_name = get_ident();
2935 if (ec_name == NULL) {
2936 parse_err(SYNERR, "Invalid encode class name after 'ins_encode('.\n");
2937 return;
2938 }
2939 // Check that encoding is defined in the encode section
2940 EncClass *encode_class = _AD._encode->encClass(ec_name);
2941 if (encode_class == NULL) {
2942 // Like to defer checking these till later...
2943 // parse_err(WARN, "Using an undefined encode class '%s' in 'ins_encode'.\n", ec_name);
2944 }
2946 // Get list for encode method's parameters
2947 NameAndList *params = encrule->add_encode(ec_name);
2949 // Parse the parameters to this encode method.
2950 skipws();
2951 if ( _curchar == '(' ) {
2952 next_char(); // move past '(' for parameters
2954 // Parse the encode method's parameters
2955 while (_curchar != ')') {
2956 char *param = get_ident_or_literal_constant("encoding operand");
2957 if ( param != NULL ) {
2958 // Found a parameter:
2959 // Check it is a local name, add it to the list, then check for more
2960 // New: allow hex constants as parameters to an encode method.
2961 // New: allow parenthesized expressions as parameters.
2962 // New: allow "primary", "secondary", "tertiary" as parameters.
2963 // New: allow user-defined register name as parameter
2964 if ( (inst._localNames[param] == NULL) &&
2965 !ADLParser::is_literal_constant(param) &&
2966 (Opcode::as_opcode_type(param) == Opcode::NOT_AN_OPCODE) &&
2967 ((_AD._register == NULL ) || (_AD._register->getRegDef(param) == NULL)) ) {
2968 parse_err(SYNERR, "Using non-locally defined parameter %s for encoding %s.\n", param, ec_name);
2969 return;
2970 }
2971 params->add_entry(param);
2973 skipws();
2974 if (_curchar == ',' ) {
2975 // More parameters to come
2976 next_char(); // move past ',' between parameters
2977 skipws(); // Skip to next parameter
2978 }
2979 else if (_curchar == ')') {
2980 // Done with parameter list
2981 }
2982 else {
2983 // Only ',' or ')' are valid after a parameter name
2984 parse_err(SYNERR, "expected ',' or ')' after parameter %s.\n",
2985 ec_name);
2986 return;
2987 }
2989 } else {
2990 skipws();
2991 // Did not find a parameter
2992 if (_curchar == ',') {
2993 parse_err(SYNERR, "Expected encode parameter before ',' in encoding %s.\n", ec_name);
2994 return;
2995 }
2996 if (_curchar != ')') {
2997 parse_err(SYNERR, "Expected ')' after encode parameters.\n");
2998 return;
2999 }
3000 }
3001 } // WHILE loop collecting parameters
3002 next_char(); // move past ')' at end of parameters
3003 } // done with parameter list for encoding
3005 // Check for ',' or ')' after encoding
3006 skipws(); // move to character after parameters
3007 if ( _curchar == ',' ) {
3008 // Found a ','
3009 next_char(); // move past ',' between encode methods
3010 skipws();
3011 }
3012 else if ( _curchar != ')' ) {
3013 // If not a ',' then only a ')' is allowed
3014 parse_err(SYNERR, "Expected ')' after encoding %s.\n", ec_name);
3015 return;
3016 }
3018 // Check for ',' separating parameters
3019 // if ( _curchar != ',' && _curchar != ')' ) {
3020 // parse_err(SYNERR, "expected ',' or ')' after encode method inside ins_encode.\n");
3021 // return NULL;
3022 // }
3024 } // done parsing ins_encode methods and their parameters
3025 if (_curchar != ')') {
3026 parse_err(SYNERR, "Missing ')' at end of ins_encode description.\n");
3027 return;
3028 }
3029 next_char(); // move past ')'
3030 skipws(); // Skip leading whitespace
3032 if ( _curchar != ';' ) {
3033 parse_err(SYNERR, "Missing ';' at end of ins_encode.\n");
3034 return;
3035 }
3036 next_char(); // move past ';'
3037 skipws(); // be friendly to oper_parse()
3039 // Check for duplicate ins_encode sections after parsing the block
3040 // so that parsing can continue and find any other errors.
3041 if (inst._insencode != NULL) {
3042 parse_err(SYNERR, "Multiple ins_encode sections defined\n");
3043 return;
3044 }
3046 // Debug Stuff
3047 if (_AD._adl_debug > 1) fprintf(stderr,"Instruction Encode: %s\n", ec_name);
3049 // Set encode class of this instruction.
3050 inst._insencode = encrule;
3051 }
3054 //------------------------------constant_parse---------------------------------
3055 // Parse a constant expression.
3056 void ADLParser::constant_parse(InstructForm& inst) {
3057 // Create a new encoding name based on the name of the instruction
3058 // definition, which should be unique.
3059 const char* prefix = "__constant_";
3060 char* ec_name = (char*) malloc(strlen(inst._ident) + strlen(prefix) + 1);
3061 sprintf(ec_name, "%s%s", prefix, inst._ident);
3063 assert(_AD._encode->encClass(ec_name) == NULL, "shouldn't already exist");
3064 EncClass* encoding = _AD._encode->add_EncClass(ec_name);
3065 encoding->_linenum = linenum();
3067 // synthesize the arguments list for the enc_class from the
3068 // arguments to the instruct definition.
3069 const char* param = NULL;
3070 inst._parameters.reset();
3071 while ((param = inst._parameters.iter()) != NULL) {
3072 OperandForm* opForm = (OperandForm*) inst._localNames[param];
3073 encoding->add_parameter(opForm->_ident, param);
3074 }
3076 // Parse the following ( ) expression.
3077 constant_parse_expression(encoding, ec_name);
3079 // Build an encoding rule which invokes the encoding rule we just
3080 // created, passing all arguments that we received.
3081 InsEncode* encrule = new InsEncode(); // Encode class for instruction
3082 NameAndList* params = encrule->add_encode(ec_name);
3083 inst._parameters.reset();
3084 while ((param = inst._parameters.iter()) != NULL) {
3085 params->add_entry(param);
3086 }
3088 // Set encode class of this instruction.
3089 inst._constant = encrule;
3090 }
3093 //------------------------------constant_parse_expression----------------------
3094 void ADLParser::constant_parse_expression(EncClass* encoding, char* ec_name) {
3095 skipws();
3097 // Prepend location descriptor, for debugging; cf. ADLParser::find_cpp_block
3098 if (_AD._adlocation_debug) {
3099 encoding->add_code(get_line_string());
3100 }
3102 // Start code line.
3103 encoding->add_code(" _constant = C->constant_table().add");
3105 // Parse everything in ( ) expression.
3106 encoding->add_code("(this, ");
3107 next_char(); // Skip '('
3108 int parens_depth = 1;
3110 // Collect the parts of the constant expression.
3111 // (1) strings that are passed through to output
3112 // (2) replacement/substitution variable, preceeded by a '$'
3113 while (parens_depth > 0) {
3114 if (_curchar == '(') {
3115 parens_depth++;
3116 encoding->add_code("(");
3117 next_char();
3118 }
3119 else if (_curchar == ')') {
3120 parens_depth--;
3121 if (parens_depth > 0)
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 // Parse a 'size(<expr>)' attribute which specifies the size of the
3162 // emitted instructions in bytes. <expr> can be a C++ expression,
3163 // e.g. a constant.
3164 char* ADLParser::size_parse(InstructForm *instr) {
3165 char* sizeOfInstr = NULL;
3167 // Get value of the instruction's size
3168 skipws();
3170 // Parse size
3171 sizeOfInstr = get_paren_expr("size expression");
3172 if (sizeOfInstr == NULL) {
3173 parse_err(SYNERR, "size of opcode expected at %c\n", _curchar);
3174 return NULL;
3175 }
3177 skipws();
3179 // Check for terminator
3180 if (_curchar != ';') {
3181 parse_err(SYNERR, "missing ';' in ins_attrib definition\n");
3182 return NULL;
3183 }
3184 next_char(); // Advance past the ';'
3185 skipws(); // necessary for instr_parse()
3187 // Debug Stuff
3188 if (_AD._adl_debug > 1) {
3189 if (sizeOfInstr != NULL) {
3190 fprintf(stderr,"size of opcode: %s\n", sizeOfInstr);
3191 }
3192 }
3194 return sizeOfInstr;
3195 }
3198 //------------------------------opcode_parse-----------------------------------
3199 Opcode * ADLParser::opcode_parse(InstructForm *instr) {
3200 char *primary = NULL;
3201 char *secondary = NULL;
3202 char *tertiary = NULL;
3204 char *val = NULL;
3205 Opcode *opcode = NULL;
3207 // Get value of the instruction's opcode
3208 skipws();
3209 if (_curchar != '(') { // Check for parenthesized operand list
3210 parse_err(SYNERR, "missing '(' in expand instruction declaration\n");
3211 return NULL;
3212 }
3213 next_char(); // skip open paren
3214 skipws();
3215 if (_curchar != ')') {
3216 // Parse primary, secondary, and tertiary opcodes, if provided.
3217 if ( ((primary = get_ident_or_literal_constant("primary opcode")) == NULL) ) {
3218 parse_err(SYNERR, "primary hex opcode expected at %c\n", _curchar);
3219 return NULL;
3220 }
3221 skipws();
3222 if (_curchar == ',') {
3223 next_char();
3224 skipws();
3225 // Parse secondary opcode
3226 if ( ((secondary = get_ident_or_literal_constant("secondary opcode")) == NULL) ) {
3227 parse_err(SYNERR, "secondary hex opcode expected at %c\n", _curchar);
3228 return NULL;
3229 }
3230 skipws();
3231 if (_curchar == ',') {
3232 next_char();
3233 skipws();
3234 // Parse tertiary opcode
3235 if ( ((tertiary = get_ident_or_literal_constant("tertiary opcode")) == NULL) ) {
3236 parse_err(SYNERR,"tertiary hex opcode expected at %c\n", _curchar);
3237 return NULL;
3238 }
3239 skipws();
3240 }
3241 }
3242 skipws();
3243 if (_curchar != ')') {
3244 parse_err(SYNERR, "Missing ')' in opcode description\n");
3245 return NULL;
3246 }
3247 }
3248 next_char(); // Skip ')'
3249 skipws();
3250 // Check for terminator
3251 if (_curchar != ';') {
3252 parse_err(SYNERR, "missing ';' in ins_attrib definition\n");
3253 return NULL;
3254 }
3255 next_char(); // Advance past the ';'
3256 skipws(); // necessary for instr_parse()
3258 // Debug Stuff
3259 if (_AD._adl_debug > 1) {
3260 if (primary != NULL) fprintf(stderr,"primary opcode: %s\n", primary);
3261 if (secondary != NULL) fprintf(stderr,"secondary opcode: %s\n", secondary);
3262 if (tertiary != NULL) fprintf(stderr,"tertiary opcode: %s\n", tertiary);
3263 }
3265 // Generate new object and return
3266 opcode = new Opcode(primary, secondary, tertiary);
3267 return opcode;
3268 }
3271 //------------------------------interface_parse--------------------------------
3272 Interface *ADLParser::interface_parse(void) {
3273 char *iface_name = NULL; // Name of interface class being used
3274 char *iface_code = NULL; // Describe components of this class
3276 // Get interface class name
3277 skipws(); // Skip whitespace
3278 if (_curchar != '(') {
3279 parse_err(SYNERR, "Missing '(' at start of interface description.\n");
3280 return NULL;
3281 }
3282 next_char(); // move past '('
3283 skipws();
3284 iface_name = get_ident();
3285 if (iface_name == NULL) {
3286 parse_err(SYNERR, "missing interface name after 'interface'.\n");
3287 return NULL;
3288 }
3289 skipws();
3290 if (_curchar != ')') {
3291 parse_err(SYNERR, "Missing ')' after name of interface.\n");
3292 return NULL;
3293 }
3294 next_char(); // move past ')'
3296 // Get details of the interface,
3297 // for the type of interface indicated by iface_name.
3298 Interface *inter = NULL;
3299 skipws();
3300 if ( _curchar != ';' ) {
3301 if ( strcmp(iface_name,"MEMORY_INTER") == 0 ) {
3302 inter = mem_interface_parse();
3303 }
3304 else if ( strcmp(iface_name,"COND_INTER") == 0 ) {
3305 inter = cond_interface_parse();
3306 }
3307 // The parse routines consume the "%}"
3309 // Check for probable extra ';' after defining block.
3310 if ( _curchar == ';' ) {
3311 parse_err(SYNERR, "Extra ';' after defining interface block.\n");
3312 next_char(); // Skip ';'
3313 return NULL;
3314 }
3315 } else {
3316 next_char(); // move past ';'
3318 // Create appropriate interface object
3319 if ( strcmp(iface_name,"REG_INTER") == 0 ) {
3320 inter = new RegInterface();
3321 }
3322 else if ( strcmp(iface_name,"CONST_INTER") == 0 ) {
3323 inter = new ConstInterface();
3324 }
3325 }
3326 skipws(); // be friendly to oper_parse()
3327 // Debug Stuff
3328 if (_AD._adl_debug > 1) fprintf(stderr,"Interface Form: %s\n", iface_name);
3330 // Create appropriate interface object and return.
3331 return inter;
3332 }
3335 //------------------------------mem_interface_parse----------------------------
3336 Interface *ADLParser::mem_interface_parse(void) {
3337 // Fields for MemInterface
3338 char *base = NULL;
3339 char *index = NULL;
3340 char *scale = NULL;
3341 char *disp = NULL;
3343 if (_curchar != '%') {
3344 parse_err(SYNERR, "Missing '%%{' for 'interface' block.\n");
3345 return NULL;
3346 }
3347 next_char(); // Skip '%'
3348 if (_curchar != '{') {
3349 parse_err(SYNERR, "Missing '%%{' for 'interface' block.\n");
3350 return NULL;
3351 }
3352 next_char(); // Skip '{'
3353 skipws();
3354 do {
3355 char *field = get_ident();
3356 if (field == NULL) {
3357 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%%}' ending interface.\n");
3358 return NULL;
3359 }
3360 if ( strcmp(field,"base") == 0 ) {
3361 base = interface_field_parse();
3362 }
3363 else if ( strcmp(field,"index") == 0 ) {
3364 index = interface_field_parse();
3365 }
3366 else if ( strcmp(field,"scale") == 0 ) {
3367 scale = interface_field_parse();
3368 }
3369 else if ( strcmp(field,"disp") == 0 ) {
3370 disp = interface_field_parse();
3371 }
3372 else {
3373 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%%}' ending interface.\n");
3374 return NULL;
3375 }
3376 } while( _curchar != '%' );
3377 next_char(); // Skip '%'
3378 if ( _curchar != '}' ) {
3379 parse_err(SYNERR, "Missing '%%}' for 'interface' block.\n");
3380 return NULL;
3381 }
3382 next_char(); // Skip '}'
3384 // Construct desired object and return
3385 Interface *inter = new MemInterface(base, index, scale, disp);
3386 return inter;
3387 }
3390 //------------------------------cond_interface_parse---------------------------
3391 Interface *ADLParser::cond_interface_parse(void) {
3392 char *equal;
3393 char *not_equal;
3394 char *less;
3395 char *greater_equal;
3396 char *less_equal;
3397 char *greater;
3398 char *overflow;
3399 char *no_overflow;
3400 const char *equal_format = "eq";
3401 const char *not_equal_format = "ne";
3402 const char *less_format = "lt";
3403 const char *greater_equal_format = "ge";
3404 const char *less_equal_format = "le";
3405 const char *greater_format = "gt";
3406 const char *overflow_format = "o";
3407 const char *no_overflow_format = "no";
3409 if (_curchar != '%') {
3410 parse_err(SYNERR, "Missing '%%{' for 'cond_interface' block.\n");
3411 return NULL;
3412 }
3413 next_char(); // Skip '%'
3414 if (_curchar != '{') {
3415 parse_err(SYNERR, "Missing '%%{' for 'cond_interface' block.\n");
3416 return NULL;
3417 }
3418 next_char(); // Skip '{'
3419 skipws();
3420 do {
3421 char *field = get_ident();
3422 if (field == NULL) {
3423 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%%}' ending interface.\n");
3424 return NULL;
3425 }
3426 if ( strcmp(field,"equal") == 0 ) {
3427 equal = interface_field_parse(&equal_format);
3428 }
3429 else if ( strcmp(field,"not_equal") == 0 ) {
3430 not_equal = interface_field_parse(¬_equal_format);
3431 }
3432 else if ( strcmp(field,"less") == 0 ) {
3433 less = interface_field_parse(&less_format);
3434 }
3435 else if ( strcmp(field,"greater_equal") == 0 ) {
3436 greater_equal = interface_field_parse(&greater_equal_format);
3437 }
3438 else if ( strcmp(field,"less_equal") == 0 ) {
3439 less_equal = interface_field_parse(&less_equal_format);
3440 }
3441 else if ( strcmp(field,"greater") == 0 ) {
3442 greater = interface_field_parse(&greater_format);
3443 }
3444 else if ( strcmp(field,"overflow") == 0 ) {
3445 overflow = interface_field_parse(&overflow_format);
3446 }
3447 else if ( strcmp(field,"no_overflow") == 0 ) {
3448 no_overflow = interface_field_parse(&no_overflow_format);
3449 }
3450 else {
3451 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%%}' ending interface.\n");
3452 return NULL;
3453 }
3454 } while( _curchar != '%' );
3455 next_char(); // Skip '%'
3456 if ( _curchar != '}' ) {
3457 parse_err(SYNERR, "Missing '%%}' for 'interface' block.\n");
3458 return NULL;
3459 }
3460 next_char(); // Skip '}'
3462 // Construct desired object and return
3463 Interface *inter = new CondInterface(equal, equal_format,
3464 not_equal, not_equal_format,
3465 less, less_format,
3466 greater_equal, greater_equal_format,
3467 less_equal, less_equal_format,
3468 greater, greater_format,
3469 overflow, overflow_format,
3470 no_overflow, no_overflow_format);
3471 return inter;
3472 }
3475 //------------------------------interface_field_parse--------------------------
3476 char *ADLParser::interface_field_parse(const char ** format) {
3477 char *iface_field = NULL;
3479 // Get interface field
3480 skipws(); // Skip whitespace
3481 if (_curchar != '(') {
3482 parse_err(SYNERR, "Missing '(' at start of interface field.\n");
3483 return NULL;
3484 }
3485 next_char(); // move past '('
3486 skipws();
3487 if ( _curchar != '0' && _curchar != '$' ) {
3488 parse_err(SYNERR, "missing or invalid interface field contents.\n");
3489 return NULL;
3490 }
3491 iface_field = get_rep_var_ident();
3492 if (iface_field == NULL) {
3493 parse_err(SYNERR, "missing or invalid interface field contents.\n");
3494 return NULL;
3495 }
3496 skipws();
3497 if (format != NULL && _curchar == ',') {
3498 next_char();
3499 skipws();
3500 if (_curchar != '"') {
3501 parse_err(SYNERR, "Missing '\"' in field format .\n");
3502 return NULL;
3503 }
3504 next_char();
3505 char *start = _ptr; // Record start of the next string
3506 while ((_curchar != '"') && (_curchar != '%') && (_curchar != '\n')) {
3507 if (_curchar == '\\') next_char(); // superquote
3508 if (_curchar == '\n') parse_err(SYNERR, "newline in string"); // unimplemented!
3509 next_char();
3510 }
3511 if (_curchar != '"') {
3512 parse_err(SYNERR, "Missing '\"' at end of field format .\n");
3513 return NULL;
3514 }
3515 // If a string was found, terminate it and record in FormatRule
3516 if ( start != _ptr ) {
3517 *_ptr = '\0'; // Terminate the string
3518 *format = start;
3519 }
3520 next_char();
3521 skipws();
3522 }
3523 if (_curchar != ')') {
3524 parse_err(SYNERR, "Missing ')' after interface field.\n");
3525 return NULL;
3526 }
3527 next_char(); // move past ')'
3528 skipws();
3529 if ( _curchar != ';' ) {
3530 parse_err(SYNERR, "Missing ';' at end of interface field.\n");
3531 return NULL;
3532 }
3533 next_char(); // move past ';'
3534 skipws(); // be friendly to interface_parse()
3536 return iface_field;
3537 }
3540 //------------------------------match_parse------------------------------------
3541 MatchRule *ADLParser::match_parse(FormDict &operands) {
3542 MatchRule *match; // Match Rule class for instruction/operand
3543 char *cnstr = NULL; // Code for constructor
3544 int depth = 0; // Counter for matching parentheses
3545 int numleaves = 0; // Counter for number of leaves in rule
3547 // Parse the match rule tree
3548 MatchNode *mnode = matchNode_parse(operands, depth, numleaves, true);
3550 // Either there is a block with a constructor, or a ';' here
3551 skipws(); // Skip whitespace
3552 if ( _curchar == ';' ) { // Semicolon is valid terminator
3553 cnstr = NULL; // no constructor for this form
3554 next_char(); // Move past the ';', replaced with '\0'
3555 }
3556 else if ((cnstr = find_cpp_block("match constructor")) == NULL ) {
3557 parse_err(SYNERR, "invalid construction of match rule\n"
3558 "Missing ';' or invalid '%%{' and '%%}' constructor\n");
3559 return NULL; // No MatchRule to return
3560 }
3561 if (_AD._adl_debug > 1)
3562 if (cnstr) fprintf(stderr,"Match Constructor: %s\n", cnstr);
3563 // Build new MatchRule object
3564 match = new MatchRule(_AD, mnode, depth, cnstr, numleaves);
3565 skipws(); // Skip any trailing whitespace
3566 return match; // Return MatchRule object
3567 }
3569 //------------------------------format_parse-----------------------------------
3570 FormatRule* ADLParser::format_parse(void) {
3571 char *desc = NULL;
3572 FormatRule *format = (new FormatRule(desc));
3574 // Without expression form, MUST have a code block;
3575 skipws(); // Skip whitespace
3576 if ( _curchar == ';' ) { // Semicolon is valid terminator
3577 desc = NULL; // no constructor for this form
3578 next_char(); // Move past the ';', replaced with '\0'
3579 }
3580 else if ( _curchar == '%' && *(_ptr+1) == '{') {
3581 next_char(); // Move past the '%'
3582 next_char(); // Move past the '{'
3584 skipws();
3585 if (_curchar == '$') {
3586 char* ident = get_rep_var_ident();
3587 if (strcmp(ident, "$$template") == 0) return template_parse();
3588 parse_err(SYNERR, "Unknown \"%s\" directive in format", ident);
3589 return NULL;
3590 }
3591 // Check for the opening '"' inside the format description
3592 if ( _curchar == '"' ) {
3593 next_char(); // Move past the initial '"'
3594 if( _curchar == '"' ) { // Handle empty format string case
3595 *_ptr = '\0'; // Terminate empty string
3596 format->_strings.addName(_ptr);
3597 }
3599 // Collect the parts of the format description
3600 // (1) strings that are passed through to tty->print
3601 // (2) replacement/substitution variable, preceeded by a '$'
3602 // (3) multi-token ANSIY C style strings
3603 while ( true ) {
3604 if ( _curchar == '%' || _curchar == '\n' ) {
3605 if ( _curchar != '"' ) {
3606 parse_err(SYNERR, "missing '\"' at end of format block");
3607 return NULL;
3608 }
3609 }
3611 // (1)
3612 // Check if there is a string to pass through to output
3613 char *start = _ptr; // Record start of the next string
3614 while ((_curchar != '$') && (_curchar != '"') && (_curchar != '%') && (_curchar != '\n')) {
3615 if (_curchar == '\\') {
3616 next_char(); // superquote
3617 if ((_curchar == '$') || (_curchar == '%'))
3618 // hack to avoid % escapes and warnings about undefined \ escapes
3619 *(_ptr-1) = _curchar;
3620 }
3621 if (_curchar == '\n') parse_err(SYNERR, "newline in string"); // unimplemented!
3622 next_char();
3623 }
3624 // If a string was found, terminate it and record in FormatRule
3625 if ( start != _ptr ) {
3626 *_ptr = '\0'; // Terminate the string
3627 format->_strings.addName(start);
3628 }
3630 // (2)
3631 // If we are at a replacement variable,
3632 // copy it and record in FormatRule
3633 if ( _curchar == '$' ) {
3634 next_char(); // Move past the '$'
3635 char* rep_var = get_ident(); // Nil terminate the variable name
3636 rep_var = strdup(rep_var);// Copy the string
3637 *_ptr = _curchar; // and replace Nil with original character
3638 format->_rep_vars.addName(rep_var);
3639 // Add flag to _strings list indicating we should check _rep_vars
3640 format->_strings.addName(NameList::_signal);
3641 }
3643 // (3)
3644 // Allow very long strings to be broken up,
3645 // using the ANSI C syntax "foo\n" <newline> "bar"
3646 if ( _curchar == '"') {
3647 next_char(); // Move past the '"'
3648 skipws(); // Skip white space before next string token
3649 if ( _curchar != '"') {
3650 break;
3651 } else {
3652 // Found one. Skip both " and the whitespace in between.
3653 next_char();
3654 }
3655 }
3656 } // end while part of format description
3658 // Check for closing '"' and '%}' in format description
3659 skipws(); // Move to closing '%}'
3660 if ( _curchar != '%' ) {
3661 parse_err(SYNERR, "non-blank characters between closing '\"' and '%%' in format");
3662 return NULL;
3663 }
3664 } // Done with format description inside
3666 skipws();
3667 // Past format description, at '%'
3668 if ( _curchar != '%' || *(_ptr+1) != '}' ) {
3669 parse_err(SYNERR, "missing '%%}' at end of format block");
3670 return NULL;
3671 }
3672 next_char(); // Move past the '%'
3673 next_char(); // Move past the '}'
3674 }
3675 else { // parameter list alone must terminate with a ';'
3676 parse_err(SYNERR, "missing ';' after Format expression");
3677 return NULL;
3678 }
3679 // Debug Stuff
3680 if (_AD._adl_debug > 1) fprintf(stderr,"Format Rule: %s\n", desc);
3682 skipws();
3683 return format;
3684 }
3687 //------------------------------template_parse-----------------------------------
3688 FormatRule* ADLParser::template_parse(void) {
3689 char *desc = NULL;
3690 FormatRule *format = (new FormatRule(desc));
3692 skipws();
3693 while ( (_curchar != '%') && (*(_ptr+1) != '}') ) {
3695 // (1)
3696 // Check if there is a string to pass through to output
3697 {
3698 char *start = _ptr; // Record start of the next string
3699 while ((_curchar != '$') && ((_curchar != '%') || (*(_ptr+1) != '}')) ) {
3700 // If at the start of a comment, skip past it
3701 if( (_curchar == '/') && ((*(_ptr+1) == '/') || (*(_ptr+1) == '*')) ) {
3702 skipws_no_preproc();
3703 } else {
3704 // ELSE advance to the next character, or start of the next line
3705 next_char_or_line();
3706 }
3707 }
3708 // If a string was found, terminate it and record in EncClass
3709 if ( start != _ptr ) {
3710 *_ptr = '\0'; // Terminate the string
3711 // Add flag to _strings list indicating we should check _rep_vars
3712 format->_strings.addName(NameList::_signal2);
3713 format->_strings.addName(start);
3714 }
3715 }
3717 // (2)
3718 // If we are at a replacement variable,
3719 // copy it and record in EncClass
3720 if ( _curchar == '$' ) {
3721 // Found replacement Variable
3722 char *rep_var = get_rep_var_ident_dup();
3723 if (strcmp(rep_var, "$emit") == 0) {
3724 // switch to normal format parsing
3725 next_char();
3726 next_char();
3727 skipws();
3728 // Check for the opening '"' inside the format description
3729 if ( _curchar == '"' ) {
3730 next_char(); // Move past the initial '"'
3731 if( _curchar == '"' ) { // Handle empty format string case
3732 *_ptr = '\0'; // Terminate empty string
3733 format->_strings.addName(_ptr);
3734 }
3736 // Collect the parts of the format description
3737 // (1) strings that are passed through to tty->print
3738 // (2) replacement/substitution variable, preceeded by a '$'
3739 // (3) multi-token ANSIY C style strings
3740 while ( true ) {
3741 if ( _curchar == '%' || _curchar == '\n' ) {
3742 parse_err(SYNERR, "missing '\"' at end of format block");
3743 return NULL;
3744 }
3746 // (1)
3747 // Check if there is a string to pass through to output
3748 char *start = _ptr; // Record start of the next string
3749 while ((_curchar != '$') && (_curchar != '"') && (_curchar != '%') && (_curchar != '\n')) {
3750 if (_curchar == '\\') next_char(); // superquote
3751 if (_curchar == '\n') parse_err(SYNERR, "newline in string"); // unimplemented!
3752 next_char();
3753 }
3754 // If a string was found, terminate it and record in FormatRule
3755 if ( start != _ptr ) {
3756 *_ptr = '\0'; // Terminate the string
3757 format->_strings.addName(start);
3758 }
3760 // (2)
3761 // If we are at a replacement variable,
3762 // copy it and record in FormatRule
3763 if ( _curchar == '$' ) {
3764 next_char(); // Move past the '$'
3765 char* next_rep_var = get_ident(); // Nil terminate the variable name
3766 next_rep_var = strdup(next_rep_var);// Copy the string
3767 *_ptr = _curchar; // and replace Nil with original character
3768 format->_rep_vars.addName(next_rep_var);
3769 // Add flag to _strings list indicating we should check _rep_vars
3770 format->_strings.addName(NameList::_signal);
3771 }
3773 // (3)
3774 // Allow very long strings to be broken up,
3775 // using the ANSI C syntax "foo\n" <newline> "bar"
3776 if ( _curchar == '"') {
3777 next_char(); // Move past the '"'
3778 skipws(); // Skip white space before next string token
3779 if ( _curchar != '"') {
3780 break;
3781 } else {
3782 // Found one. Skip both " and the whitespace in between.
3783 next_char();
3784 }
3785 }
3786 } // end while part of format description
3787 }
3788 } else {
3789 // Add flag to _strings list indicating we should check _rep_vars
3790 format->_rep_vars.addName(rep_var);
3791 // Add flag to _strings list indicating we should check _rep_vars
3792 format->_strings.addName(NameList::_signal3);
3793 }
3794 } // end while part of format description
3795 }
3797 skipws();
3798 // Past format description, at '%'
3799 if ( _curchar != '%' || *(_ptr+1) != '}' ) {
3800 parse_err(SYNERR, "missing '%%}' at end of format block");
3801 return NULL;
3802 }
3803 next_char(); // Move past the '%'
3804 next_char(); // Move past the '}'
3806 // Debug Stuff
3807 if (_AD._adl_debug > 1) fprintf(stderr,"Format Rule: %s\n", desc);
3809 skipws();
3810 return format;
3811 }
3814 //------------------------------effect_parse-----------------------------------
3815 void ADLParser::effect_parse(InstructForm *instr) {
3816 char* desc = NULL;
3818 skipws(); // Skip whitespace
3819 if (_curchar != '(') {
3820 parse_err(SYNERR, "missing '(' in effect definition\n");
3821 return;
3822 }
3823 // Get list of effect-operand pairs and insert into dictionary
3824 else get_effectlist(instr->_effects, instr->_localNames, instr->_has_call);
3826 // Debug Stuff
3827 if (_AD._adl_debug > 1) fprintf(stderr,"Effect description: %s\n", desc);
3828 if (_curchar != ';') {
3829 parse_err(SYNERR, "missing ';' in Effect definition\n");
3830 }
3831 next_char(); // Skip ';'
3833 }
3835 //------------------------------expand_parse-----------------------------------
3836 ExpandRule* ADLParser::expand_parse(InstructForm *instr) {
3837 char *ident, *ident2;
3838 OperandForm *oper;
3839 InstructForm *ins;
3840 NameAndList *instr_and_operands = NULL;
3841 ExpandRule *exp = new ExpandRule();
3843 // Expand is a block containing an ordered list of instructions, each of
3844 // which has an ordered list of operands.
3845 // Check for block delimiter
3846 skipws(); // Skip leading whitespace
3847 if ((_curchar != '%')
3848 || (next_char(), (_curchar != '{')) ) { // If not open block
3849 parse_err(SYNERR, "missing '%%{' in expand definition\n");
3850 return(NULL);
3851 }
3852 next_char(); // Maintain the invariant
3853 do {
3854 ident = get_ident(); // Grab next identifier
3855 if (ident == NULL) {
3856 parse_err(SYNERR, "identifier expected at %c\n", _curchar);
3857 continue;
3858 } // Check that you have a valid instruction
3859 const Form *form = _globalNames[ident];
3860 ins = form ? form->is_instruction() : NULL;
3861 if (ins == NULL) {
3862 // This is a new operand
3863 oper = form ? form->is_operand() : NULL;
3864 if (oper == NULL) {
3865 parse_err(SYNERR, "instruction/operand name expected at %s\n", ident);
3866 continue;
3867 }
3868 // Throw the operand on the _newopers list
3869 skipws();
3870 ident = get_unique_ident(instr->_localNames,"Operand");
3871 if (ident == NULL) {
3872 parse_err(SYNERR, "identifier expected at %c\n", _curchar);
3873 continue;
3874 }
3875 exp->_newopers.addName(ident);
3876 // Add new operand to LocalNames
3877 instr->_localNames.Insert(ident, oper);
3878 // Grab any constructor code and save as a string
3879 char *c = NULL;
3880 skipws();
3881 if (_curchar == '%') { // Need a constructor for the operand
3882 c = find_cpp_block("Operand Constructor");
3883 if (c == NULL) {
3884 parse_err(SYNERR, "Invalid code block for operand constructor\n", _curchar);
3885 continue;
3886 }
3887 // Add constructor to _newopconst Dict
3888 exp->_newopconst.Insert(ident, c);
3889 }
3890 else if (_curchar != ';') { // If no constructor, need a ;
3891 parse_err(SYNERR, "Missing ; in expand rule operand declaration\n");
3892 continue;
3893 }
3894 else next_char(); // Skip the ;
3895 skipws();
3896 }
3897 else {
3898 // Add instruction to list
3899 instr_and_operands = new NameAndList(ident);
3900 // Grab operands, build nameList of them, and then put into dictionary
3901 skipws();
3902 if (_curchar != '(') { // Check for parenthesized operand list
3903 parse_err(SYNERR, "missing '(' in expand instruction declaration\n");
3904 continue;
3905 }
3906 do {
3907 next_char(); // skip open paren & comma characters
3908 skipws();
3909 if (_curchar == ')') break;
3910 ident2 = get_ident();
3911 skipws();
3912 if (ident2 == NULL) {
3913 parse_err(SYNERR, "identifier expected at %c\n", _curchar);
3914 continue;
3915 } // Check that you have a valid operand
3916 const Form *form2 = instr->_localNames[ident2];
3917 if (!form2) {
3918 parse_err(SYNERR, "operand name expected at %s\n", ident2);
3919 continue;
3920 }
3921 oper = form2->is_operand();
3922 if (oper == NULL && !form2->is_opclass()) {
3923 parse_err(SYNERR, "operand name expected at %s\n", ident2);
3924 continue;
3925 } // Add operand to list
3926 instr_and_operands->add_entry(ident2);
3927 } while(_curchar == ',');
3928 if (_curchar != ')') {
3929 parse_err(SYNERR, "missing ')'in expand instruction declaration\n");
3930 continue;
3931 }
3932 next_char();
3933 if (_curchar != ';') {
3934 parse_err(SYNERR, "missing ';'in expand instruction declaration\n");
3935 continue;
3936 }
3937 next_char();
3939 // Record both instruction name and its operand list
3940 exp->add_instruction(instr_and_operands);
3942 skipws();
3943 }
3945 } while(_curchar != '%');
3946 next_char();
3947 if (_curchar != '}') {
3948 parse_err(SYNERR, "missing '%%}' in expand rule definition\n");
3949 return(NULL);
3950 }
3951 next_char();
3953 // Debug Stuff
3954 if (_AD._adl_debug > 1) fprintf(stderr,"Expand Rule:\n");
3956 skipws();
3957 return (exp);
3958 }
3960 //------------------------------rewrite_parse----------------------------------
3961 RewriteRule* ADLParser::rewrite_parse(void) {
3962 char* params = NULL;
3963 char* desc = NULL;
3966 // This feature targeted for second generation description language.
3968 skipws(); // Skip whitespace
3969 // Get parameters for rewrite
3970 if ((params = get_paren_expr("rewrite parameters")) == NULL) {
3971 parse_err(SYNERR, "missing '(' in rewrite rule\n");
3972 return NULL;
3973 }
3974 // Debug Stuff
3975 if (_AD._adl_debug > 1) fprintf(stderr,"Rewrite parameters: %s\n", params);
3977 // For now, grab entire block;
3978 skipws();
3979 if ( (desc = find_cpp_block("rewrite block")) == NULL ) {
3980 parse_err(SYNERR, "incorrect or missing block for 'rewrite'.\n");
3981 return NULL;
3982 }
3983 // Debug Stuff
3984 if (_AD._adl_debug > 1) fprintf(stderr,"Rewrite Rule: %s\n", desc);
3986 skipws();
3987 return (new RewriteRule(params,desc));
3988 }
3990 //------------------------------attr_parse-------------------------------------
3991 Attribute *ADLParser::attr_parse(char* ident) {
3992 Attribute *attrib; // Attribute class
3993 char *cost = NULL; // String representation of cost attribute
3995 skipws(); // Skip leading whitespace
3996 if ( (cost = get_paren_expr("attribute")) == NULL ) {
3997 parse_err(SYNERR, "incorrect or missing expression for 'attribute'\n");
3998 return NULL;
3999 }
4000 // Debug Stuff
4001 if (_AD._adl_debug > 1) fprintf(stderr,"Attribute: %s\n", cost);
4002 if (_curchar != ';') {
4003 parse_err(SYNERR, "missing ';' in attribute definition\n");
4004 return NULL;
4005 }
4006 next_char(); // Point after the terminator
4008 skipws();
4009 attrib = new Attribute(ident,cost,INS_ATTR); // Build new predicate object
4010 return attrib;
4011 }
4014 //------------------------------matchNode_parse--------------------------------
4015 MatchNode *ADLParser::matchNode_parse(FormDict &operands, int &depth, int &numleaves, bool atroot) {
4016 // Count depth of parenthesis nesting for both left and right children
4017 int lParens = depth;
4018 int rParens = depth;
4020 // MatchNode objects for left, right, and root of subtree.
4021 MatchNode *lChild = NULL;
4022 MatchNode *rChild = NULL;
4023 char *token; // Identifier which may be opcode or operand
4025 // Match expression starts with a '('
4026 if (cur_char() != '(')
4027 return NULL;
4029 next_char(); // advance past '('
4031 // Parse the opcode
4032 token = get_ident(); // Get identifier, opcode
4033 if (token == NULL) {
4034 parse_err(SYNERR, "missing opcode in match expression\n");
4035 return NULL;
4036 }
4038 // Take note if we see one of a few special operations - those that are
4039 // treated differently on different architectures in the sense that on
4040 // one architecture there is a match rule and on another there isn't (so
4041 // a call will eventually be generated).
4043 for (int i = _last_machine_leaf + 1; i < _last_opcode; i++) {
4044 if (strcmp(token, NodeClassNames[i]) == 0) {
4045 _AD.has_match_rule(i, true);
4046 }
4047 }
4049 // Lookup the root value in the operands dict to perform substitution
4050 const char *result = NULL; // Result type will be filled in later
4051 const char *name = token; // local name associated with this node
4052 const char *operation = token; // remember valid operation for later
4053 const Form *form = operands[token];
4054 OpClassForm *opcForm = form ? form->is_opclass() : NULL;
4055 if (opcForm != NULL) {
4056 // If this token is an entry in the local names table, record its type
4057 if (!opcForm->ideal_only()) {
4058 operation = opcForm->_ident;
4059 result = operation; // Operands result in their own type
4060 }
4061 // Otherwise it is an ideal type, and so, has no local name
4062 else name = NULL;
4063 }
4065 // Parse the operands
4066 skipws();
4067 if (cur_char() != ')') {
4069 // Parse the left child
4070 if (strcmp(operation,"Set"))
4071 lChild = matchChild_parse(operands, lParens, numleaves, false);
4072 else
4073 lChild = matchChild_parse(operands, lParens, numleaves, true);
4075 skipws();
4076 if (cur_char() != ')' ) {
4077 if(strcmp(operation, "Set"))
4078 rChild = matchChild_parse(operands,rParens,numleaves,false);
4079 else
4080 rChild = matchChild_parse(operands,rParens,numleaves,true);
4081 }
4082 }
4084 // Check for required ')'
4085 skipws();
4086 if (cur_char() != ')') {
4087 parse_err(SYNERR, "missing ')' in match expression\n");
4088 return NULL;
4089 }
4090 next_char(); // skip the ')'
4092 MatchNode* mroot = new MatchNode(_AD,result,name,operation,lChild,rChild);
4094 // If not the root, reduce this subtree to an internal operand
4095 if (!atroot) {
4096 mroot->build_internalop();
4097 }
4098 // depth is greater of left and right paths.
4099 depth = (lParens > rParens) ? lParens : rParens;
4101 return mroot;
4102 }
4105 //------------------------------matchChild_parse-------------------------------
4106 MatchNode *ADLParser::matchChild_parse(FormDict &operands, int &parens, int &numleaves, bool atroot) {
4107 MatchNode *child = NULL;
4108 const char *result = NULL;
4109 const char *token = NULL;
4110 const char *opType = NULL;
4112 if (cur_char() == '(') { // child is an operation
4113 ++parens;
4114 child = matchNode_parse(operands, parens, numleaves, atroot);
4115 }
4116 else { // child is an operand
4117 token = get_ident();
4118 const Form *form = operands[token];
4119 OpClassForm *opcForm = form ? form->is_opclass() : NULL;
4120 if (opcForm != NULL) {
4121 opType = opcForm->_ident;
4122 result = opcForm->_ident; // an operand's result matches its type
4123 } else {
4124 parse_err(SYNERR, "undefined operand %s in match rule\n", token);
4125 return NULL;
4126 }
4128 if (opType == NULL) {
4129 parse_err(SYNERR, "missing type for argument '%s'\n", token);
4130 }
4132 child = new MatchNode(_AD, result, token, opType);
4133 ++numleaves;
4134 }
4136 return child;
4137 }
4141 // ******************** Private Utility Functions *************************
4144 char* ADLParser::find_cpp_block(const char* description) {
4145 char *next; // Pointer for finding block delimiters
4146 char* cppBlock = NULL; // Beginning of C++ code block
4148 if (_curchar == '%') { // Encoding is a C++ expression
4149 next_char();
4150 if (_curchar != '{') {
4151 parse_err(SYNERR, "missing '{' in %s \n", description);
4152 return NULL;
4153 }
4154 next_char(); // Skip block delimiter
4155 skipws_no_preproc(); // Skip leading whitespace
4156 cppBlock = _ptr; // Point to start of expression
4157 int line = linenum();
4158 next = _ptr + 1;
4159 while(((_curchar != '%') || (*next != '}')) && (_curchar != '\0')) {
4160 next_char_or_line();
4161 next = _ptr+1; // Maintain the next pointer
4162 } // Grab string
4163 if (_curchar == '\0') {
4164 parse_err(SYNERR, "invalid termination of %s \n", description);
4165 return NULL;
4166 }
4167 *_ptr = '\0'; // Terminate string
4168 _ptr += 2; // Skip block delimiter
4169 _curchar = *_ptr; // Maintain invariant
4171 // Prepend location descriptor, for debugging.
4172 if (_AD._adlocation_debug) {
4173 char* location = get_line_string(line);
4174 char* end_loc = end_line_marker();
4175 char* result = (char *)malloc(strlen(location) + strlen(cppBlock) + strlen(end_loc) + 1);
4176 strcpy(result, location);
4177 strcat(result, cppBlock);
4178 strcat(result, end_loc);
4179 cppBlock = result;
4180 free(location);
4181 }
4182 }
4184 return cppBlock;
4185 }
4187 // Move to the closing token of the expression we are currently at,
4188 // as defined by stop_chars. Match parens and quotes.
4189 char* ADLParser::get_expr(const char *desc, const char *stop_chars) {
4190 char* expr = NULL;
4191 int paren = 0;
4193 expr = _ptr;
4194 while (paren > 0 || !strchr(stop_chars, _curchar)) {
4195 if (_curchar == '(') { // Down level of nesting
4196 paren++; // Bump the parenthesis counter
4197 next_char(); // maintain the invariant
4198 }
4199 else if (_curchar == ')') { // Up one level of nesting
4200 if (paren == 0) {
4201 // Paren underflow: We didn't encounter the required stop-char.
4202 parse_err(SYNERR, "too many )'s, did not find %s after %s\n",
4203 stop_chars, desc);
4204 return NULL;
4205 }
4206 paren--; // Drop the parenthesis counter
4207 next_char(); // Maintain the invariant
4208 }
4209 else if (_curchar == '"' || _curchar == '\'') {
4210 int qchar = _curchar;
4211 while (true) {
4212 next_char();
4213 if (_curchar == qchar) { next_char(); break; }
4214 if (_curchar == '\\') next_char(); // superquote
4215 if (_curchar == '\n' || _curchar == '\0') {
4216 parse_err(SYNERR, "newline in string in %s\n", desc);
4217 return NULL;
4218 }
4219 }
4220 }
4221 else if (_curchar == '%' && (_ptr[1] == '{' || _ptr[1] == '}')) {
4222 // Make sure we do not stray into the next ADLC-level form.
4223 parse_err(SYNERR, "unexpected %%%c in %s\n", _ptr[1], desc);
4224 return NULL;
4225 }
4226 else if (_curchar == '\0') {
4227 parse_err(SYNERR, "unexpected EOF in %s\n", desc);
4228 return NULL;
4229 }
4230 else {
4231 // Always walk over whitespace, comments, preprocessor directives, etc.
4232 char* pre_skip_ptr = _ptr;
4233 skipws();
4234 // If the parser declined to make progress on whitespace,
4235 // skip the next character, which is therefore NOT whitespace.
4236 if (pre_skip_ptr == _ptr) {
4237 next_char();
4238 } else if (pre_skip_ptr+strlen(pre_skip_ptr) != _ptr+strlen(_ptr)) {
4239 parse_err(SYNERR, "unimplemented: preprocessor must not elide subexpression in %s", desc);
4240 }
4241 }
4242 }
4244 assert(strchr(stop_chars, _curchar), "non-null return must be at stop-char");
4245 *_ptr = '\0'; // Replace ')' or other stop-char with '\0'
4246 return expr;
4247 }
4249 // Helper function around get_expr
4250 // Sets _curchar to '(' so that get_paren_expr will search for a matching ')'
4251 char *ADLParser::get_paren_expr(const char *description, bool include_location) {
4252 int line = linenum();
4253 if (_curchar != '(') // Escape if not valid starting position
4254 return NULL;
4255 next_char(); // Skip the required initial paren.
4256 char *token2 = get_expr(description, ")");
4257 if (_curchar == ')')
4258 next_char(); // Skip required final paren.
4259 int junk = 0;
4260 if (include_location && _AD._adlocation_debug && !is_int_token(token2, junk)) {
4261 // Prepend location descriptor, for debugging.
4262 char* location = get_line_string(line);
4263 char* end_loc = end_line_marker();
4264 char* result = (char *)malloc(strlen(location) + strlen(token2) + strlen(end_loc) + 1);
4265 strcpy(result, location);
4266 strcat(result, token2);
4267 strcat(result, end_loc);
4268 token2 = result;
4269 free(location);
4270 }
4271 return token2;
4272 }
4274 //------------------------------get_ident_common-------------------------------
4275 // Looks for an identifier in the buffer, and turns it into a null terminated
4276 // string(still inside the file buffer). Returns a pointer to the string or
4277 // NULL if some other token is found instead.
4278 char *ADLParser::get_ident_common(bool do_preproc) {
4279 register char c;
4280 char *start; // Pointer to start of token
4281 char *end; // Pointer to end of token
4283 if( _curline == NULL ) // Return NULL at EOF.
4284 return NULL;
4286 skipws_common(do_preproc); // Skip whitespace before identifier
4287 start = end = _ptr; // Start points at first character
4288 end--; // unwind end by one to prepare for loop
4289 do {
4290 end++; // Increment end pointer
4291 c = *end; // Grab character to test
4292 } while ( ((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z'))
4293 || ((c >= '0') && (c <= '9'))
4294 || ((c == '_')) || ((c == ':')) || ((c == '#')) );
4295 if (start == end) { // We popped out on the first try
4296 // It can occur that `start' contains the rest of the input file.
4297 // In this case the output should be truncated.
4298 if (strlen(start) > 24) {
4299 char buf[32];
4300 strncpy(buf, start, 20);
4301 buf[20] = '\0';
4302 strcat(buf, "[...]");
4303 parse_err(SYNERR, "Identifier expected, but found '%s'.", buf);
4304 } else {
4305 parse_err(SYNERR, "Identifier expected, but found '%s'.", start);
4306 }
4307 start = NULL;
4308 }
4309 else {
4310 _curchar = c; // Save the first character of next token
4311 *end = '\0'; // NULL terminate the string in place
4312 }
4313 _ptr = end; // Reset _ptr to point to next char after token
4315 // Make sure we do not try to use #defined identifiers. If start is
4316 // NULL an error was already reported.
4317 if (do_preproc && start != NULL) {
4318 const char* def = _AD.get_preproc_def(start);
4319 if (def != NULL && strcmp(def, start)) {
4320 const char* def1 = def;
4321 const char* def2 = _AD.get_preproc_def(def1);
4322 // implement up to 2 levels of #define
4323 if (def2 != NULL && strcmp(def2, def1)) {
4324 def = def2;
4325 const char* def3 = _AD.get_preproc_def(def2);
4326 if (def3 != NULL && strcmp(def3, def2) && strcmp(def3, def1)) {
4327 parse_err(SYNERR, "unimplemented: using %s defined as %s => %s => %s",
4328 start, def1, def2, def3);
4329 }
4330 }
4331 start = strdup(def);
4332 }
4333 }
4335 return start; // Pointer to token in filebuf
4336 }
4338 //------------------------------get_ident_dup----------------------------------
4339 // Looks for an identifier in the buffer, and returns a duplicate
4340 // or NULL if some other token is found instead.
4341 char *ADLParser::get_ident_dup(void) {
4342 char *ident = get_ident();
4344 // Duplicate an identifier before returning and restore string.
4345 if( ident != NULL ) {
4346 ident = strdup(ident); // Copy the string
4347 *_ptr = _curchar; // and replace Nil with original character
4348 }
4350 return ident;
4351 }
4353 //----------------------get_ident_or_literal_constant--------------------------
4354 // Looks for an identifier in the buffer, or a parenthesized expression.
4355 char *ADLParser::get_ident_or_literal_constant(const char* description) {
4356 char* param = NULL;
4357 skipws();
4358 if (_curchar == '(') {
4359 // Grab a constant expression.
4360 param = get_paren_expr(description);
4361 if (param[0] != '(') {
4362 char* buf = (char*) malloc(strlen(param) + 3);
4363 sprintf(buf, "(%s)", param);
4364 param = buf;
4365 }
4366 assert(is_literal_constant(param),
4367 "expr must be recognizable as a constant");
4368 } else {
4369 param = get_ident();
4370 }
4371 return param;
4372 }
4374 //------------------------------get_rep_var_ident-----------------------------
4375 // Do NOT duplicate,
4376 // Leave nil terminator in buffer
4377 // Preserve initial '$'(s) in string
4378 char *ADLParser::get_rep_var_ident(void) {
4379 // Remember starting point
4380 char *rep_var = _ptr;
4382 // Check for replacement variable indicator '$' and pass if present
4383 if ( _curchar == '$' ) {
4384 next_char();
4385 }
4386 // Check for a subfield indicator, a second '$', and pass if present
4387 if ( _curchar == '$' ) {
4388 next_char();
4389 }
4391 // Check for a control indicator, a third '$':
4392 if ( _curchar == '$' ) {
4393 next_char();
4394 }
4396 // Check for more than three '$'s in sequence, SYNERR
4397 if( _curchar == '$' ) {
4398 parse_err(SYNERR, "Replacement variables and field specifiers can not start with '$$$$'");
4399 next_char();
4400 return NULL;
4401 }
4403 // Nil terminate the variable name following the '$'
4404 char *rep_var_name = get_ident();
4405 assert( rep_var_name != NULL,
4406 "Missing identifier after replacement variable indicator '$'");
4408 return rep_var;
4409 }
4413 //------------------------------get_rep_var_ident_dup-------------------------
4414 // Return the next replacement variable identifier, skipping first '$'
4415 // given a pointer into a line of the buffer.
4416 // Null terminates string, still inside the file buffer,
4417 // Returns a pointer to a copy of the string, or NULL on failure
4418 char *ADLParser::get_rep_var_ident_dup(void) {
4419 if( _curchar != '$' ) return NULL;
4421 next_char(); // Move past the '$'
4422 char *rep_var = _ptr; // Remember starting point
4424 // Check for a subfield indicator, a second '$':
4425 if ( _curchar == '$' ) {
4426 next_char();
4427 }
4429 // Check for a control indicator, a third '$':
4430 if ( _curchar == '$' ) {
4431 next_char();
4432 }
4434 // Check for more than three '$'s in sequence, SYNERR
4435 if( _curchar == '$' ) {
4436 parse_err(SYNERR, "Replacement variables and field specifiers can not start with '$$$$'");
4437 next_char();
4438 return NULL;
4439 }
4441 // Nil terminate the variable name following the '$'
4442 char *rep_var_name = get_ident();
4443 assert( rep_var_name != NULL,
4444 "Missing identifier after replacement variable indicator '$'");
4445 rep_var = strdup(rep_var); // Copy the string
4446 *_ptr = _curchar; // and replace Nil with original character
4448 return rep_var;
4449 }
4452 //------------------------------get_unique_ident------------------------------
4453 // Looks for an identifier in the buffer, terminates it with a NULL,
4454 // and checks that it is unique
4455 char *ADLParser::get_unique_ident(FormDict& dict, const char* nameDescription){
4456 char* ident = get_ident();
4458 if (ident == NULL) {
4459 parse_err(SYNERR, "missing %s identifier at %c\n", nameDescription, _curchar);
4460 }
4461 else {
4462 if (dict[ident] != NULL) {
4463 parse_err(SYNERR, "duplicate name %s for %s\n", ident, nameDescription);
4464 ident = NULL;
4465 }
4466 }
4468 return ident;
4469 }
4472 //------------------------------get_int----------------------------------------
4473 // Looks for a character string integer in the buffer, and turns it into an int
4474 // invokes a parse_err if the next token is not an integer.
4475 // This routine does not leave the integer null-terminated.
4476 int ADLParser::get_int(void) {
4477 register char c;
4478 char *start; // Pointer to start of token
4479 char *end; // Pointer to end of token
4480 int result; // Storage for integer result
4482 if( _curline == NULL ) // Return NULL at EOF.
4483 return 0;
4485 skipws(); // Skip whitespace before identifier
4486 start = end = _ptr; // Start points at first character
4487 c = *end; // Grab character to test
4488 while ((c >= '0') && (c <= '9')
4489 || ((c == '-') && (end == start))) {
4490 end++; // Increment end pointer
4491 c = *end; // Grab character to test
4492 }
4493 if (start == end) { // We popped out on the first try
4494 parse_err(SYNERR, "integer expected at %c\n", c);
4495 result = 0;
4496 }
4497 else {
4498 _curchar = c; // Save the first character of next token
4499 *end = '\0'; // NULL terminate the string in place
4500 result = atoi(start); // Convert the string to an integer
4501 *end = _curchar; // Restore buffer to original condition
4502 }
4504 // Reset _ptr to next char after token
4505 _ptr = end;
4507 return result; // integer
4508 }
4511 //------------------------------get_relation_dup------------------------------
4512 // Looks for a relational operator in the buffer
4513 // invokes a parse_err if the next token is not a relation
4514 // This routine creates a duplicate of the string in the buffer.
4515 char *ADLParser::get_relation_dup(void) {
4516 char *result = NULL; // relational operator being returned
4518 if( _curline == NULL ) // Return NULL at EOF.
4519 return NULL;
4521 skipws(); // Skip whitespace before relation
4522 char *start = _ptr; // Store start of relational operator
4523 char first = *_ptr; // the first character
4524 if( (first == '=') || (first == '!') || (first == '<') || (first == '>') ) {
4525 next_char();
4526 char second = *_ptr; // the second character
4527 if( (second == '=') ) {
4528 next_char();
4529 char tmp = *_ptr;
4530 *_ptr = '\0'; // NULL terminate
4531 result = strdup(start); // Duplicate the string
4532 *_ptr = tmp; // restore buffer
4533 } else {
4534 parse_err(SYNERR, "relational operator expected at %s\n", _ptr);
4535 }
4536 } else {
4537 parse_err(SYNERR, "relational operator expected at %s\n", _ptr);
4538 }
4540 return result;
4541 }
4545 //------------------------------get_oplist-------------------------------------
4546 // Looks for identifier pairs where first must be the name of an operand, and
4547 // second must be a name unique in the scope of this instruction. Stores the
4548 // names with a pointer to the OpClassForm of their type in a local name table.
4549 void ADLParser::get_oplist(NameList ¶meters, FormDict &operands) {
4550 OpClassForm *opclass = NULL;
4551 char *ident = NULL;
4553 do {
4554 next_char(); // skip open paren & comma characters
4555 skipws();
4556 if (_curchar == ')') break;
4558 // Get operand type, and check it against global name table
4559 ident = get_ident();
4560 if (ident == NULL) {
4561 parse_err(SYNERR, "optype identifier expected at %c\n", _curchar);
4562 return;
4563 }
4564 else {
4565 const Form *form = _globalNames[ident];
4566 if( form == NULL ) {
4567 parse_err(SYNERR, "undefined operand type %s\n", ident);
4568 return;
4569 }
4571 // Check for valid operand type
4572 OpClassForm *opc = form->is_opclass();
4573 OperandForm *oper = form->is_operand();
4574 if((oper == NULL) && (opc == NULL)) {
4575 parse_err(SYNERR, "identifier %s not operand type\n", ident);
4576 return;
4577 }
4578 opclass = opc;
4579 }
4580 // Debugging Stuff
4581 if (_AD._adl_debug > 1) fprintf(stderr, "\tOperand Type: %s\t", ident);
4583 // Get name of operand and add it to local name table
4584 if( (ident = get_unique_ident(operands, "operand")) == NULL) {
4585 return;
4586 }
4587 // Parameter names must not be global names.
4588 if( _globalNames[ident] != NULL ) {
4589 parse_err(SYNERR, "Reuse of global name %s as operand.\n",ident);
4590 return;
4591 }
4592 operands.Insert(ident, opclass);
4593 parameters.addName(ident);
4595 // Debugging Stuff
4596 if (_AD._adl_debug > 1) fprintf(stderr, "\tOperand Name: %s\n", ident);
4597 skipws();
4598 } while(_curchar == ',');
4600 if (_curchar != ')') parse_err(SYNERR, "missing ')'\n");
4601 else {
4602 next_char(); // set current character position past the close paren
4603 }
4604 }
4607 //------------------------------get_effectlist---------------------------------
4608 // Looks for identifier pairs where first must be the name of a pre-defined,
4609 // effect, and the second must be the name of an operand defined in the
4610 // operand list of this instruction. Stores the names with a pointer to the
4611 // effect form in a local effects table.
4612 void ADLParser::get_effectlist(FormDict &effects, FormDict &operands, bool& has_call) {
4613 OperandForm *opForm;
4614 Effect *eForm;
4615 char *ident;
4617 do {
4618 next_char(); // skip open paren & comma characters
4619 skipws();
4620 if (_curchar == ')') break;
4622 // Get effect type, and check it against global name table
4623 ident = get_ident();
4624 if (ident == NULL) {
4625 parse_err(SYNERR, "effect type identifier expected at %c\n", _curchar);
4626 return;
4627 }
4628 else {
4629 // Check for valid effect type
4630 const Form *form = _globalNames[ident];
4631 if( form == NULL ) {
4632 parse_err(SYNERR, "undefined effect type %s\n", ident);
4633 return;
4634 }
4635 else {
4636 if( (eForm = form->is_effect()) == NULL) {
4637 parse_err(SYNERR, "identifier %s not effect type\n", ident);
4638 return;
4639 }
4640 }
4641 }
4642 // Debugging Stuff
4643 if (_AD._adl_debug > 1) fprintf(stderr, "\tEffect Type: %s\t", ident);
4644 skipws();
4645 if (eForm->is(Component::CALL)) {
4646 if (_AD._adl_debug > 1) fprintf(stderr, "\n");
4647 has_call = true;
4648 } else {
4649 // Get name of operand and check that it is in the local name table
4650 if( (ident = get_unique_ident(effects, "effect")) == NULL) {
4651 parse_err(SYNERR, "missing operand identifier in effect list\n");
4652 return;
4653 }
4654 const Form *form = operands[ident];
4655 opForm = form ? form->is_operand() : NULL;
4656 if( opForm == NULL ) {
4657 if( form && form->is_opclass() ) {
4658 const char* cname = form->is_opclass()->_ident;
4659 parse_err(SYNERR, "operand classes are illegal in effect lists (found %s %s)\n", cname, ident);
4660 } else {
4661 parse_err(SYNERR, "undefined operand %s in effect list\n", ident);
4662 }
4663 return;
4664 }
4665 // Add the pair to the effects table
4666 effects.Insert(ident, eForm);
4667 // Debugging Stuff
4668 if (_AD._adl_debug > 1) fprintf(stderr, "\tOperand Name: %s\n", ident);
4669 }
4670 skipws();
4671 } while(_curchar == ',');
4673 if (_curchar != ')') parse_err(SYNERR, "missing ')'\n");
4674 else {
4675 next_char(); // set current character position past the close paren
4676 }
4677 }
4680 //-------------------------------preproc_line----------------------------------
4681 // A "#line" keyword has been seen, so parse the rest of the line.
4682 void ADLParser::preproc_line(void) {
4683 int line = get_int();
4684 skipws_no_preproc();
4685 const char* file = NULL;
4686 if (_curchar == '"') {
4687 next_char(); // Move past the initial '"'
4688 file = _ptr;
4689 while (true) {
4690 if (_curchar == '\n') {
4691 parse_err(SYNERR, "missing '\"' at end of #line directive");
4692 return;
4693 }
4694 if (_curchar == '"') {
4695 *_ptr = '\0'; // Terminate the string
4696 next_char();
4697 skipws_no_preproc();
4698 break;
4699 }
4700 next_char();
4701 }
4702 }
4703 ensure_end_of_line();
4704 if (file != NULL)
4705 _AD._ADL_file._name = file;
4706 _buf.set_linenum(line);
4707 }
4709 //------------------------------preproc_define---------------------------------
4710 // A "#define" keyword has been seen, so parse the rest of the line.
4711 void ADLParser::preproc_define(void) {
4712 char* flag = get_ident_no_preproc();
4713 skipws_no_preproc();
4714 // only #define x y is supported for now
4715 char* def = get_ident_no_preproc();
4716 _AD.set_preproc_def(flag, def);
4717 skipws_no_preproc();
4718 if (_curchar != '\n') {
4719 parse_err(SYNERR, "non-identifier in preprocessor definition\n");
4720 }
4721 }
4723 //------------------------------preproc_undef----------------------------------
4724 // An "#undef" keyword has been seen, so parse the rest of the line.
4725 void ADLParser::preproc_undef(void) {
4726 char* flag = get_ident_no_preproc();
4727 skipws_no_preproc();
4728 ensure_end_of_line();
4729 _AD.set_preproc_def(flag, NULL);
4730 }
4734 //------------------------------parse_err--------------------------------------
4735 // Issue a parser error message, and skip to the end of the current line
4736 void ADLParser::parse_err(int flag, const char *fmt, ...) {
4737 va_list args;
4739 va_start(args, fmt);
4740 if (flag == 1)
4741 _AD._syntax_errs += _AD.emit_msg(0, flag, linenum(), fmt, args);
4742 else if (flag == 2)
4743 _AD._semantic_errs += _AD.emit_msg(0, flag, linenum(), fmt, args);
4744 else
4745 _AD._warnings += _AD.emit_msg(0, flag, linenum(), fmt, args);
4747 int error_char = _curchar;
4748 char* error_ptr = _ptr+1;
4749 for(;*_ptr != '\n'; _ptr++) ; // Skip to the end of the current line
4750 _curchar = '\n';
4751 va_end(args);
4752 _AD._no_output = 1;
4754 if (flag == 1) {
4755 char* error_tail = strchr(error_ptr, '\n');
4756 char tem = *error_ptr;
4757 error_ptr[-1] = '\0';
4758 char* error_head = error_ptr-1;
4759 while (error_head > _curline && *error_head) --error_head;
4760 if (error_tail) *error_tail = '\0';
4761 fprintf(stderr, "Error Context: %s>>>%c<<<%s\n",
4762 error_head, error_char, error_ptr);
4763 if (error_tail) *error_tail = '\n';
4764 error_ptr[-1] = tem;
4765 }
4766 }
4768 //---------------------------ensure_start_of_line------------------------------
4769 // A preprocessor directive has been encountered. Be sure it has fallen at
4770 // the beginning of a line, or else report an error.
4771 void ADLParser::ensure_start_of_line(void) {
4772 if (_curchar == '\n') { next_line(); return; }
4773 assert( _ptr >= _curline && _ptr < _curline+strlen(_curline),
4774 "Must be able to find which line we are in" );
4776 for (char *s = _curline; s < _ptr; s++) {
4777 if (*s > ' ') {
4778 parse_err(SYNERR, "'%c' must be at beginning of line\n", _curchar);
4779 break;
4780 }
4781 }
4782 }
4784 //---------------------------ensure_end_of_line--------------------------------
4785 // A preprocessor directive has been parsed. Be sure there is no trailing
4786 // garbage at the end of this line. Set the scan point to the beginning of
4787 // the next line.
4788 void ADLParser::ensure_end_of_line(void) {
4789 skipws_no_preproc();
4790 if (_curchar != '\n' && _curchar != '\0') {
4791 parse_err(SYNERR, "garbage char '%c' at end of line\n", _curchar);
4792 } else {
4793 next_char_or_line();
4794 }
4795 }
4797 //---------------------------handle_preproc------------------------------------
4798 // The '#' character introducing a preprocessor directive has been found.
4799 // Parse the whole directive name (e.g., #define, #endif) and take appropriate
4800 // action. If we are in an "untaken" span of text, simply keep track of
4801 // #ifdef nesting structure, so we can find out when to start taking text
4802 // again. (In this state, we "sort of support" C's #if directives, enough
4803 // to disregard their associated #else and #endif lines.) If we are in a
4804 // "taken" span of text, there are two cases: "#define" and "#undef"
4805 // directives are preserved and passed up to the caller, which eventually
4806 // passes control to the top-level parser loop, which handles #define and
4807 // #undef directly. (This prevents these directives from occurring in
4808 // arbitrary positions in the AD file--we require better structure than C.)
4809 // In the other case, and #ifdef, #ifndef, #else, or #endif is silently
4810 // processed as whitespace, with the "taken" state of the text correctly
4811 // updated. This routine returns "false" exactly in the case of a "taken"
4812 // #define or #undef, which tells the caller that a preprocessor token
4813 // has appeared which must be handled explicitly by the parse loop.
4814 bool ADLParser::handle_preproc_token() {
4815 assert(*_ptr == '#', "must be at start of preproc");
4816 ensure_start_of_line();
4817 next_char();
4818 skipws_no_preproc();
4819 char* start_ident = _ptr;
4820 char* ident = (_curchar == '\n') ? NULL : get_ident_no_preproc();
4821 if (ident == NULL) {
4822 parse_err(SYNERR, "expected preprocessor command, got end of line\n");
4823 } else if (!strcmp(ident, "ifdef") ||
4824 !strcmp(ident, "ifndef")) {
4825 char* flag = get_ident_no_preproc();
4826 ensure_end_of_line();
4827 // Test the identifier only if we are already in taken code:
4828 bool flag_def = preproc_taken() && (_AD.get_preproc_def(flag) != NULL);
4829 bool now_taken = !strcmp(ident, "ifdef") ? flag_def : !flag_def;
4830 begin_if_def(now_taken);
4831 } else if (!strcmp(ident, "if")) {
4832 if (preproc_taken())
4833 parse_err(SYNERR, "unimplemented: #%s %s", ident, _ptr+1);
4834 next_line();
4835 // Intelligently skip this nested C preprocessor directive:
4836 begin_if_def(true);
4837 } else if (!strcmp(ident, "else")) {
4838 ensure_end_of_line();
4839 invert_if_def();
4840 } else if (!strcmp(ident, "endif")) {
4841 ensure_end_of_line();
4842 end_if_def();
4843 } else if (preproc_taken()) {
4844 // pass this token up to the main parser as "#define" or "#undef"
4845 _ptr = start_ident;
4846 _curchar = *--_ptr;
4847 if( _curchar != '#' ) {
4848 parse_err(SYNERR, "no space allowed after # in #define or #undef");
4849 assert(_curchar == '#', "no space allowed after # in #define or #undef");
4850 }
4851 return false;
4852 }
4853 return true;
4854 }
4856 //---------------------------skipws_common-------------------------------------
4857 // Skip whitespace, including comments and newlines, while keeping an accurate
4858 // line count.
4859 // Maybe handle certain preprocessor constructs: #ifdef, #ifndef, #else, #endif
4860 void ADLParser::skipws_common(bool do_preproc) {
4861 char *start = _ptr;
4862 char *next = _ptr + 1;
4864 if (*_ptr == '\0') {
4865 // Check for string terminator
4866 if (_curchar > ' ') return;
4867 if (_curchar == '\n') {
4868 if (!do_preproc) return; // let caller handle the newline
4869 next_line();
4870 _ptr = _curline; next = _ptr + 1;
4871 }
4872 else if (_curchar == '#' ||
4873 (_curchar == '/' && (*next == '/' || *next == '*'))) {
4874 parse_err(SYNERR, "unimplemented: comment token in a funny place");
4875 }
4876 }
4877 while(_curline != NULL) { // Check for end of file
4878 if (*_ptr == '\n') { // keep proper track of new lines
4879 if (!do_preproc) break; // let caller handle the newline
4880 next_line();
4881 _ptr = _curline; next = _ptr + 1;
4882 }
4883 else if ((*_ptr == '/') && (*next == '/')) // C++ comment
4884 do { _ptr++; next++; } while(*_ptr != '\n'); // So go to end of line
4885 else if ((*_ptr == '/') && (*next == '*')) { // C comment
4886 _ptr++; next++;
4887 do {
4888 _ptr++; next++;
4889 if (*_ptr == '\n') { // keep proper track of new lines
4890 next_line(); // skip newlines within comments
4891 if (_curline == NULL) { // check for end of file
4892 parse_err(SYNERR, "end-of-file detected inside comment\n");
4893 break;
4894 }
4895 _ptr = _curline; next = _ptr + 1;
4896 }
4897 } while(!((*_ptr == '*') && (*next == '/'))); // Go to end of comment
4898 _ptr = ++next; next++; // increment _ptr past comment end
4899 }
4900 else if (do_preproc && *_ptr == '#') {
4901 // Note that this calls skipws_common(false) recursively!
4902 bool preproc_handled = handle_preproc_token();
4903 if (!preproc_handled) {
4904 if (preproc_taken()) {
4905 return; // short circuit
4906 }
4907 ++_ptr; // skip the preprocessor character
4908 }
4909 next = _ptr+1;
4910 } else if(*_ptr > ' ' && !(do_preproc && !preproc_taken())) {
4911 break;
4912 }
4913 else if (*_ptr == '"' || *_ptr == '\'') {
4914 assert(do_preproc, "only skip strings if doing preproc");
4915 // skip untaken quoted string
4916 int qchar = *_ptr;
4917 while (true) {
4918 ++_ptr;
4919 if (*_ptr == qchar) { ++_ptr; break; }
4920 if (*_ptr == '\\') ++_ptr;
4921 if (*_ptr == '\n' || *_ptr == '\0') {
4922 parse_err(SYNERR, "newline in string");
4923 break;
4924 }
4925 }
4926 next = _ptr + 1;
4927 }
4928 else { ++_ptr; ++next; }
4929 }
4930 if( _curline != NULL ) // at end of file _curchar isn't valid
4931 _curchar = *_ptr; // reset _curchar to maintain invariant
4932 }
4934 //---------------------------cur_char-----------------------------------------
4935 char ADLParser::cur_char() {
4936 return (_curchar);
4937 }
4939 //---------------------------next_char-----------------------------------------
4940 void ADLParser::next_char() {
4941 if (_curchar == '\n') parse_err(WARN, "must call next_line!");
4942 _curchar = *++_ptr;
4943 // if ( _curchar == '\n' ) {
4944 // next_line();
4945 // }
4946 }
4948 //---------------------------next_char_or_line---------------------------------
4949 void ADLParser::next_char_or_line() {
4950 if ( _curchar != '\n' ) {
4951 _curchar = *++_ptr;
4952 } else {
4953 next_line();
4954 _ptr = _curline;
4955 _curchar = *_ptr; // maintain invariant
4956 }
4957 }
4959 //---------------------------next_line-----------------------------------------
4960 void ADLParser::next_line() {
4961 _curline = _buf.get_line();
4962 _curchar = ' ';
4963 }
4965 //------------------------get_line_string--------------------------------------
4966 // Prepended location descriptor, for debugging.
4967 // Must return a malloced string (that can be freed if desired).
4968 char* ADLParser::get_line_string(int linenum) {
4969 const char* file = _AD._ADL_file._name;
4970 int line = linenum ? linenum : this->linenum();
4971 char* location = (char *)malloc(strlen(file) + 100);
4972 sprintf(location, "\n#line %d \"%s\"\n", line, file);
4973 return location;
4974 }
4976 //-------------------------is_literal_constant---------------------------------
4977 bool ADLParser::is_literal_constant(const char *param) {
4978 if (param[0] == 0) return false; // null string
4979 if (param[0] == '(') return true; // parenthesized expression
4980 if (param[0] == '0' && (param[1] == 'x' || param[1] == 'X')) {
4981 // Make sure it's a hex constant.
4982 int i = 2;
4983 do {
4984 if( !ADLParser::is_hex_digit(*(param+i)) ) return false;
4985 ++i;
4986 } while( *(param+i) != 0 );
4987 return true;
4988 }
4989 return false;
4990 }
4992 //---------------------------is_hex_digit--------------------------------------
4993 bool ADLParser::is_hex_digit(char digit) {
4994 return ((digit >= '0') && (digit <= '9'))
4995 ||((digit >= 'a') && (digit <= 'f'))
4996 ||((digit >= 'A') && (digit <= 'F'));
4997 }
4999 //---------------------------is_int_token--------------------------------------
5000 bool ADLParser::is_int_token(const char* token, int& intval) {
5001 const char* cp = token;
5002 while (*cp != '\0' && *cp <= ' ') cp++;
5003 if (*cp == '-') cp++;
5004 int ndigit = 0;
5005 while (*cp >= '0' && *cp <= '9') { cp++; ndigit++; }
5006 while (*cp != '\0' && *cp <= ' ') cp++;
5007 if (ndigit == 0 || *cp != '\0') {
5008 return false;
5009 }
5010 intval = atoi(token);
5011 return true;
5012 }
5014 static const char* skip_expr_ws(const char* str) {
5015 const char * cp = str;
5016 while (cp[0]) {
5017 if (cp[0] <= ' ') {
5018 ++cp;
5019 } else if (cp[0] == '#') {
5020 ++cp;
5021 while (cp[0] == ' ') ++cp;
5022 assert(0 == strncmp(cp, "line", 4), "must be a #line directive");
5023 const char* eol = strchr(cp, '\n');
5024 assert(eol != NULL, "must find end of line");
5025 if (eol == NULL) eol = cp + strlen(cp);
5026 cp = eol;
5027 } else {
5028 break;
5029 }
5030 }
5031 return cp;
5032 }
5034 //-----------------------equivalent_expressions--------------------------------
5035 bool ADLParser::equivalent_expressions(const char* str1, const char* str2) {
5036 if (str1 == str2)
5037 return true;
5038 else if (str1 == NULL || str2 == NULL)
5039 return false;
5040 const char* cp1 = str1;
5041 const char* cp2 = str2;
5042 char in_quote = '\0';
5043 while (cp1[0] && cp2[0]) {
5044 if (!in_quote) {
5045 // skip spaces and/or cpp directives
5046 const char* cp1a = skip_expr_ws(cp1);
5047 const char* cp2a = skip_expr_ws(cp2);
5048 if (cp1a > cp1 && cp2a > cp2) {
5049 cp1 = cp1a; cp2 = cp2a;
5050 continue;
5051 }
5052 if (cp1a > cp1 || cp2a > cp2) break; // fail
5053 }
5054 // match one non-space char
5055 if (cp1[0] != cp2[0]) break; // fail
5056 char ch = cp1[0];
5057 cp1++; cp2++;
5058 // watch for quotes
5059 if (in_quote && ch == '\\') {
5060 if (cp1[0] != cp2[0]) break; // fail
5061 if (!cp1[0]) break;
5062 cp1++; cp2++;
5063 }
5064 if (in_quote && ch == in_quote) {
5065 in_quote = '\0';
5066 } else if (!in_quote && (ch == '"' || ch == '\'')) {
5067 in_quote = ch;
5068 }
5069 }
5070 return (!cp1[0] && !cp2[0]);
5071 }
5074 //-------------------------------trim------------------------------------------
5075 void ADLParser::trim(char* &token) {
5076 while (*token <= ' ') token++;
5077 char* end = token + strlen(token);
5078 while (end > token && *(end-1) <= ' ') --end;
5079 *end = '\0';
5080 }
