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src/share/vm/adlc/adlparse.cpp@a9becfeecd1b
src/share/vm/adlc/adlparse.cpp
Wed, 22 Jan 2014 17:42:23 -0800
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- kvn
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- Wed, 22 Jan 2014 17:42:23 -0800
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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 // Parse late expand keyword.
224 else if (!strcmp(ident, "postalloc_expand")) postalloc_expand_parse(*instr);
225 else if (!strcmp(ident, "opcode")) instr->_opcode = opcode_parse(instr);
226 else if (!strcmp(ident, "size")) instr->_size = size_parse(instr);
227 else if (!strcmp(ident, "effect")) effect_parse(instr);
228 else if (!strcmp(ident, "expand")) instr->_exprule = expand_parse(instr);
229 else if (!strcmp(ident, "rewrite")) instr->_rewrule = rewrite_parse();
230 else if (!strcmp(ident, "constraint")) {
231 parse_err(SYNERR, "Instructions do not specify a constraint\n");
232 }
233 else if (!strcmp(ident, "construct")) {
234 parse_err(SYNERR, "Instructions do not specify a construct\n");
235 }
236 else if (!strcmp(ident, "format")) instr->_format = format_parse();
237 else if (!strcmp(ident, "interface")) {
238 parse_err(SYNERR, "Instructions do not specify an interface\n");
239 }
240 else if (!strcmp(ident, "ins_pipe")) ins_pipe_parse(*instr);
241 else { // Done with staticly defined parts of instruction definition
242 // Check identifier to see if it is the name of an attribute
243 const Form *form = _globalNames[ident];
244 AttributeForm *attr = form ? form->is_attribute() : NULL;
245 if (attr && (attr->_atype == INS_ATTR)) {
246 // Insert the new attribute into the linked list.
247 Attribute *temp = attr_parse(ident);
248 temp->_next = instr->_attribs;
249 instr->_attribs = temp;
250 } else {
251 parse_err(SYNERR, "expected one of:\n predicate, match, encode, or the name of"
252 " an instruction attribute at %s\n", ident);
253 }
254 }
255 skipws();
256 } while(_curchar != '%');
257 next_char();
258 if (_curchar != '}') {
259 parse_err(SYNERR, "missing '%%}' in instruction definition\n");
260 return;
261 }
262 // Check for "Set" form of chain rule
263 adjust_set_rule(instr);
264 if (_AD._pipeline) {
265 // No pipe required for late expand.
266 if (instr->expands() || instr->postalloc_expands()) {
267 if (instr->_ins_pipe) {
268 parse_err(WARN, "ins_pipe and expand rule both specified for instruction \"%s\";"
269 " ins_pipe will be unused\n", instr->_ident);
270 }
271 } else {
272 if (!instr->_ins_pipe) {
273 parse_err(WARN, "No ins_pipe specified for instruction \"%s\"\n", instr->_ident);
274 }
275 }
276 }
277 // Add instruction to tail of instruction list
278 _AD.addForm(instr);
280 // Create instruction form for each additional match rule
281 rule = instr->_matrule;
282 if (rule != NULL) {
283 rule = rule->_next;
284 while (rule != NULL) {
285 ident = (char*)rule->_result;
286 InstructForm *clone = new InstructForm(ident, instr, rule); // Create new instruction form
287 _globalNames.Insert(ident, clone); // Add name to the name table
288 // Debugging Stuff
289 if (_AD._adl_debug > 1)
290 fprintf(stderr,"Parsing Instruction Form %s\n", ident);
291 // Check for "Set" form of chain rule
292 adjust_set_rule(clone);
293 // Add instruction to tail of instruction list
294 _AD.addForm(clone);
295 rule = rule->_next;
296 clone->_matrule->_next = NULL; // One match rule per clone
297 }
298 }
299 }
301 //------------------------------matchrule_clone_and_swap-----------------------
302 // Check for commutative operations with subtree operands,
303 // create clones and swap operands.
304 void ADLParser::matchrule_clone_and_swap(MatchRule* rule, const char* instr_ident, int& match_rules_cnt) {
305 // Check for commutative operations with tree operands.
306 int count = 0;
307 rule->count_commutative_op(count);
308 if (count > 0) {
309 // Clone match rule and swap commutative operation's operands.
310 rule->matchrule_swap_commutative_op(instr_ident, count, match_rules_cnt);
311 }
312 }
314 //------------------------------adjust_set_rule--------------------------------
315 // Check for "Set" form of chain rule
316 void ADLParser::adjust_set_rule(InstructForm *instr) {
317 if (instr->_matrule == NULL || instr->_matrule->_rChild == NULL) return;
318 const char *rch = instr->_matrule->_rChild->_opType;
319 const Form *frm = _globalNames[rch];
320 if( (! strcmp(instr->_matrule->_opType,"Set")) &&
321 frm && frm->is_operand() && (! frm->ideal_only()) ) {
322 // Previous implementation, which missed leaP*, but worked for loadCon*
323 unsigned position = 0;
324 const char *result = NULL;
325 const char *name = NULL;
326 const char *optype = NULL;
327 MatchNode *right = instr->_matrule->_rChild;
328 if (right->base_operand(position, _globalNames, result, name, optype)) {
329 position = 1;
330 const char *result2 = NULL;
331 const char *name2 = NULL;
332 const char *optype2 = NULL;
333 // Can not have additional base operands in right side of match!
334 if ( ! right->base_operand( position, _globalNames, result2, name2, optype2) ) {
335 if (instr->_predicate != NULL)
336 parse_err(SYNERR, "ADLC does not support instruction chain rules with predicates");
337 // Chain from input _ideal_operand_type_,
338 // Needed for shared roots of match-trees
339 ChainList *lst = (ChainList *)_AD._chainRules[optype];
340 if (lst == NULL) {
341 lst = new ChainList();
342 _AD._chainRules.Insert(optype, lst);
343 }
344 if (!lst->search(instr->_matrule->_lChild->_opType)) {
345 const char *cost = instr->cost();
346 if (cost == NULL) {
347 cost = ((AttributeForm*)_globalNames[AttributeForm::_ins_cost])->_attrdef;
348 }
349 // The ADLC does not support chaining from the ideal operand type
350 // of a predicated user-defined operand
351 if( frm->is_operand() == NULL || frm->is_operand()->_predicate == NULL ) {
352 lst->insert(instr->_matrule->_lChild->_opType,cost,instr->_ident);
353 }
354 }
355 // Chain from input _user_defined_operand_type_,
356 lst = (ChainList *)_AD._chainRules[result];
357 if (lst == NULL) {
358 lst = new ChainList();
359 _AD._chainRules.Insert(result, lst);
360 }
361 if (!lst->search(instr->_matrule->_lChild->_opType)) {
362 const char *cost = instr->cost();
363 if (cost == NULL) {
364 cost = ((AttributeForm*)_globalNames[AttributeForm::_ins_cost])->_attrdef;
365 }
366 // It is safe to chain from the top-level user-defined operand even
367 // if it has a predicate, since the predicate is checked before
368 // the user-defined type is available.
369 lst->insert(instr->_matrule->_lChild->_opType,cost,instr->_ident);
370 }
371 } else {
372 // May have instruction chain rule if root of right-tree is an ideal
373 OperandForm *rightOp = _globalNames[right->_opType]->is_operand();
374 if( rightOp ) {
375 const Form *rightRoot = _globalNames[rightOp->_matrule->_opType];
376 if( rightRoot && rightRoot->ideal_only() ) {
377 const char *chain_op = NULL;
378 if( rightRoot->is_instruction() )
379 chain_op = rightOp->_ident;
380 if( chain_op ) {
381 // Look-up the operation in chain rule table
382 ChainList *lst = (ChainList *)_AD._chainRules[chain_op];
383 if (lst == NULL) {
384 lst = new ChainList();
385 _AD._chainRules.Insert(chain_op, lst);
386 }
387 // if (!lst->search(instr->_matrule->_lChild->_opType)) {
388 const char *cost = instr->cost();
389 if (cost == NULL) {
390 cost = ((AttributeForm*)_globalNames[AttributeForm::_ins_cost])->_attrdef;
391 }
392 // This chains from a top-level operand whose predicate, if any,
393 // has been checked.
394 lst->insert(instr->_matrule->_lChild->_opType,cost,instr->_ident);
395 // }
396 }
397 }
398 }
399 } // end chain rule from right-tree's ideal root
400 }
401 }
402 }
405 //------------------------------oper_parse-------------------------------------
406 void ADLParser::oper_parse(void) {
407 char *ident;
408 OperandForm *oper;
409 AttributeForm *attr;
410 MatchRule *rule;
412 // First get the name of the operand
413 skipws();
414 if( (ident = get_unique_ident(_globalNames,"operand")) == NULL )
415 return;
416 oper = new OperandForm(ident); // Create new operand form
417 oper->_linenum = linenum();
418 _globalNames.Insert(ident, oper); // Add name to the name table
420 // Debugging Stuff
421 if (_AD._adl_debug > 1) fprintf(stderr,"Parsing Operand Form %s\n", ident);
423 // Get the component operands
424 skipws();
425 if (_curchar != '(') {
426 parse_err(SYNERR, "missing '(' in operand definition\n");
427 return;
428 }
429 else get_oplist(oper->_parameters, oper->_localNames); // Parse the component operand list
430 skipws();
431 // Check for block delimiter
432 if ((_curchar != '%') || (*(_ptr+1) != '{')) { // If not open block
433 parse_err(SYNERR, "missing '%%{' in operand definition\n");
434 return;
435 }
436 next_char(); next_char(); // Skip over "%{" symbol
437 do {
438 ident = get_ident(); // Grab next identifier
439 if (ident == NULL) {
440 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar);
441 continue;
442 }
443 if (!strcmp(ident, "predicate")) oper->_predicate = pred_parse();
444 else if (!strcmp(ident, "match")) {
445 // Find the end of the match rule list
446 rule = oper->_matrule;
447 if (rule) {
448 while (rule->_next) rule = rule->_next;
449 // Add the new match rule to the list
450 rule->_next = match_parse(oper->_localNames);
451 if (rule->_next) {
452 rule->_next->_result = oper->_ident;
453 }
454 }
455 else {
456 // This is first match rule encountered
457 oper->_matrule = match_parse(oper->_localNames);
458 if (oper->_matrule) {
459 oper->_matrule->_result = oper->_ident;
460 }
461 }
462 }
463 else if (!strcmp(ident, "encode")) oper->_interface = interface_parse();
464 else if (!strcmp(ident, "ins_encode")) {
465 parse_err(SYNERR, "Operands specify 'encode', not 'ins_encode'\n");
466 }
467 else if (!strcmp(ident, "opcode")) {
468 parse_err(SYNERR, "Operands do not specify an opcode\n");
469 }
470 else if (!strcmp(ident, "effect")) {
471 parse_err(SYNERR, "Operands do not specify an effect\n");
472 }
473 else if (!strcmp(ident, "expand")) {
474 parse_err(SYNERR, "Operands do not specify an expand\n");
475 }
476 else if (!strcmp(ident, "rewrite")) {
477 parse_err(SYNERR, "Operands do not specify a rewrite\n");
478 }
479 else if (!strcmp(ident, "constraint"))oper->_constraint= constraint_parse();
480 else if (!strcmp(ident, "construct")) oper->_construct = construct_parse();
481 else if (!strcmp(ident, "format")) oper->_format = format_parse();
482 else if (!strcmp(ident, "interface")) oper->_interface = interface_parse();
483 // Check identifier to see if it is the name of an attribute
484 else if (((attr = _globalNames[ident]->is_attribute()) != NULL) &&
485 (attr->_atype == OP_ATTR)) oper->_attribs = attr_parse(ident);
486 else {
487 parse_err(SYNERR, "expected one of - constraint, predicate, match, encode, format, construct, or the name of a defined operand attribute at %s\n", ident);
488 }
489 skipws();
490 } while(_curchar != '%');
491 next_char();
492 if (_curchar != '}') {
493 parse_err(SYNERR, "missing '%%}' in operand definition\n");
494 return;
495 }
496 // Add operand to tail of operand list
497 _AD.addForm(oper);
498 }
500 //------------------------------opclass_parse----------------------------------
501 // Operand Classes are a block with a comma delimited list of operand names
502 void ADLParser::opclass_parse(void) {
503 char *ident;
504 OpClassForm *opc;
505 OperandForm *opForm;
507 // First get the name of the operand class
508 skipws();
509 if( (ident = get_unique_ident(_globalNames,"opclass")) == NULL )
510 return;
511 opc = new OpClassForm(ident); // Create new operand class form
512 _globalNames.Insert(ident, opc); // Add name to the name table
514 // Debugging Stuff
515 if (_AD._adl_debug > 1)
516 fprintf(stderr,"Parsing Operand Class Form %s\n", ident);
518 // Get the list of operands
519 skipws();
520 if (_curchar != '(') {
521 parse_err(SYNERR, "missing '(' in operand definition\n");
522 return;
523 }
524 do {
525 next_char(); // Skip past open paren or comma
526 ident = get_ident(); // Grab next identifier
527 if (ident == NULL) {
528 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar);
529 continue;
530 }
531 // Check identifier to see if it is the name of an operand
532 const Form *form = _globalNames[ident];
533 opForm = form ? form->is_operand() : NULL;
534 if ( opForm ) {
535 opc->_oplst.addName(ident); // Add operand to opclass list
536 opForm->_classes.addName(opc->_ident);// Add opclass to operand list
537 }
538 else {
539 parse_err(SYNERR, "expected name of a defined operand at %s\n", ident);
540 }
541 skipws(); // skip trailing whitespace
542 } while (_curchar == ','); // Check for the comma
543 // Check for closing ')'
544 if (_curchar != ')') {
545 parse_err(SYNERR, "missing ')' or ',' in opclass definition\n");
546 return;
547 }
548 next_char(); // Consume the ')'
549 skipws();
550 // Check for closing ';'
551 if (_curchar != ';') {
552 parse_err(SYNERR, "missing ';' in opclass definition\n");
553 return;
554 }
555 next_char(); // Consume the ';'
556 // Add operand to tail of operand list
557 _AD.addForm(opc);
558 }
560 //------------------------------ins_attr_parse---------------------------------
561 void ADLParser::ins_attr_parse(void) {
562 char *ident;
563 char *aexpr;
564 AttributeForm *attrib;
566 // get name for the instruction attribute
567 skipws(); // Skip leading whitespace
568 if( (ident = get_unique_ident(_globalNames,"inst_attrib")) == NULL )
569 return;
570 // Debugging Stuff
571 if (_AD._adl_debug > 1) fprintf(stderr,"Parsing Ins_Attribute Form %s\n", ident);
573 // Get default value of the instruction attribute
574 skipws(); // Skip whitespace
575 if ((aexpr = get_paren_expr("attribute default expression string")) == NULL) {
576 parse_err(SYNERR, "missing '(' in ins_attrib definition\n");
577 return;
578 }
579 // Debug Stuff
580 if (_AD._adl_debug > 1) fprintf(stderr,"Attribute Expression: %s\n", aexpr);
582 // Check for terminator
583 if (_curchar != ';') {
584 parse_err(SYNERR, "missing ';' in ins_attrib definition\n");
585 return;
586 }
587 next_char(); // Advance past the ';'
589 // Construct the attribute, record global name, and store in ArchDesc
590 attrib = new AttributeForm(ident, INS_ATTR, aexpr);
591 _globalNames.Insert(ident, attrib); // Add name to the name table
592 _AD.addForm(attrib);
593 }
595 //------------------------------op_attr_parse----------------------------------
596 void ADLParser::op_attr_parse(void) {
597 char *ident;
598 char *aexpr;
599 AttributeForm *attrib;
601 // get name for the operand attribute
602 skipws(); // Skip leading whitespace
603 if( (ident = get_unique_ident(_globalNames,"op_attrib")) == NULL )
604 return;
605 // Debugging Stuff
606 if (_AD._adl_debug > 1) fprintf(stderr,"Parsing Op_Attribute Form %s\n", ident);
608 // Get default value of the instruction attribute
609 skipws(); // Skip whitespace
610 if ((aexpr = get_paren_expr("attribute default expression string")) == NULL) {
611 parse_err(SYNERR, "missing '(' in op_attrib definition\n");
612 return;
613 }
614 // Debug Stuff
615 if (_AD._adl_debug > 1) fprintf(stderr,"Attribute Expression: %s\n", aexpr);
617 // Check for terminator
618 if (_curchar != ';') {
619 parse_err(SYNERR, "missing ';' in op_attrib definition\n");
620 return;
621 }
622 next_char(); // Advance past the ';'
624 // Construct the attribute, record global name, and store in ArchDesc
625 attrib = new AttributeForm(ident, OP_ATTR, aexpr);
626 _globalNames.Insert(ident, attrib);
627 _AD.addForm(attrib);
628 }
630 //------------------------------definitions_parse-----------------------------------
631 void ADLParser::definitions_parse(void) {
632 skipws(); // Skip leading whitespace
633 if (_curchar == '%' && *(_ptr+1) == '{') {
634 next_char(); next_char(); // Skip "%{"
635 skipws();
636 while (_curchar != '%' && *(_ptr+1) != '}') {
637 // Process each definition until finding closing string "%}"
638 char *token = get_ident();
639 if (token == NULL) {
640 parse_err(SYNERR, "missing identifier inside definitions block.\n");
641 return;
642 }
643 if (strcmp(token,"int_def")==0) { int_def_parse(); }
644 // if (strcmp(token,"str_def")==0) { str_def_parse(); }
645 skipws();
646 }
647 }
648 else {
649 parse_err(SYNERR, "Missing %%{ ... %%} block after definitions keyword.\n");
650 return;
651 }
652 }
654 //------------------------------int_def_parse----------------------------------
655 // Parse Example:
656 // int_def MEMORY_REF_COST ( 200, DEFAULT_COST * 2);
657 // <keyword> <name> ( <int_value>, <description> );
658 //
659 void ADLParser::int_def_parse(void) {
660 char *name = NULL; // Name of definition
661 char *value = NULL; // its value,
662 int int_value = -1; // positive values only
663 char *description = NULL; // textual description
665 // Get definition name
666 skipws(); // Skip whitespace
667 name = get_ident();
668 if (name == NULL) {
669 parse_err(SYNERR, "missing definition name after int_def\n");
670 return;
671 }
673 // Check for value of int_def dname( integer_value [, string_expression ] )
674 skipws();
675 if (_curchar == '(') {
677 // Parse the integer value.
678 next_char();
679 value = get_ident();
680 if (value == NULL) {
681 parse_err(SYNERR, "missing value in int_def\n");
682 return;
683 }
684 if( !is_int_token(value, int_value) ) {
685 parse_err(SYNERR, "value in int_def is not recognized as integer\n");
686 return;
687 }
688 skipws();
690 // Check for description
691 if (_curchar == ',') {
692 next_char(); // skip ','
694 description = get_expr("int_def description", ")");
695 if (description == NULL) {
696 parse_err(SYNERR, "invalid or missing description in int_def\n");
697 return;
698 }
699 trim(description);
700 }
702 if (_curchar != ')') {
703 parse_err(SYNERR, "missing ')' in register definition statement\n");
704 return;
705 }
706 next_char();
707 }
709 // Check for closing ';'
710 skipws();
711 if (_curchar != ';') {
712 parse_err(SYNERR, "missing ';' after int_def\n");
713 return;
714 }
715 next_char(); // move past ';'
717 // Debug Stuff
718 if (_AD._adl_debug > 1) {
719 fprintf(stderr,"int_def: %s ( %s, %s )\n", name,
720 (value), (description ? description : ""));
721 }
723 // Record new definition.
724 Expr *expr = new Expr(name, description, int_value, int_value);
725 const Expr *old_expr = _AD.globalDefs().define(name, expr);
726 if (old_expr != NULL) {
727 parse_err(SYNERR, "Duplicate definition\n");
728 return;
729 }
731 return;
732 }
735 //------------------------------source_parse-----------------------------------
736 void ADLParser::source_parse(void) {
737 SourceForm *source; // Encode class for instruction/operand
738 char *rule = NULL; // String representation of encode rule
740 skipws(); // Skip leading whitespace
741 if ( (rule = find_cpp_block("source block")) == NULL ) {
742 parse_err(SYNERR, "incorrect or missing block for 'source'.\n");
743 return;
744 }
745 // Debug Stuff
746 if (_AD._adl_debug > 1) fprintf(stderr,"Source Form: %s\n", rule);
748 source = new SourceForm(rule); // Build new Source object
749 _AD.addForm(source);
750 // skipws();
751 }
753 //------------------------------source_hpp_parse-------------------------------
754 // Parse a source_hpp %{ ... %} block.
755 // The code gets stuck into the ad_<arch>.hpp file.
756 // If the source_hpp block appears before the register block in the AD
757 // file, it goes up at the very top of the ad_<arch>.hpp file, so that
758 // it can be used by register encodings, etc. Otherwise, it goes towards
759 // the bottom, where it's useful as a global definition to *.cpp files.
760 void ADLParser::source_hpp_parse(void) {
761 char *rule = NULL; // String representation of encode rule
763 skipws(); // Skip leading whitespace
764 if ( (rule = find_cpp_block("source_hpp block")) == NULL ) {
765 parse_err(SYNERR, "incorrect or missing block for 'source_hpp'.\n");
766 return;
767 }
768 // Debug Stuff
769 if (_AD._adl_debug > 1) fprintf(stderr,"Header Form: %s\n", rule);
771 if (_AD.get_registers() == NULL) {
772 // Very early in the file, before reg_defs, we collect pre-headers.
773 PreHeaderForm* pre_header = new PreHeaderForm(rule);
774 _AD.addForm(pre_header);
775 } else {
776 // Normally, we collect header info, placed at the bottom of the hpp file.
777 HeaderForm* header = new HeaderForm(rule);
778 _AD.addForm(header);
779 }
780 }
782 //------------------------------reg_parse--------------------------------------
783 void ADLParser::reg_parse(void) {
784 RegisterForm *regBlock = _AD.get_registers(); // Information about registers encoding
785 if (regBlock == NULL) {
786 // Create the RegisterForm for the architecture description.
787 regBlock = new RegisterForm(); // Build new Source object
788 _AD.addForm(regBlock);
789 }
791 skipws(); // Skip leading whitespace
792 if (_curchar == '%' && *(_ptr+1) == '{') {
793 next_char(); next_char(); // Skip "%{"
794 skipws();
795 while (_curchar != '%' && *(_ptr+1) != '}') {
796 char *token = get_ident();
797 if (token == NULL) {
798 parse_err(SYNERR, "missing identifier inside register block.\n");
799 return;
800 }
801 if (strcmp(token,"reg_def")==0) { reg_def_parse(); }
802 else if (strcmp(token,"reg_class")==0) { reg_class_parse(); }
803 else if (strcmp(token,"alloc_class")==0) { alloc_class_parse(); }
804 else if (strcmp(token,"#define")==0) { preproc_define(); }
805 else { parse_err(SYNERR, "bad token %s inside register block.\n", token); break; }
806 skipws();
807 }
808 }
809 else {
810 parse_err(SYNERR, "Missing %c{ ... %c} block after register keyword.\n",'%','%');
811 return;
812 }
813 }
815 //------------------------------encode_parse-----------------------------------
816 void ADLParser::encode_parse(void) {
817 EncodeForm *encBlock; // Information about instruction/operand encoding
819 _AD.getForm(&encBlock);
820 if ( encBlock == NULL) {
821 // Create the EncodeForm for the architecture description.
822 encBlock = new EncodeForm(); // Build new Source object
823 _AD.addForm(encBlock);
824 }
826 skipws(); // Skip leading whitespace
827 if (_curchar == '%' && *(_ptr+1) == '{') {
828 next_char(); next_char(); // Skip "%{"
829 skipws();
830 while (_curchar != '%' && *(_ptr+1) != '}') {
831 char *token = get_ident();
832 if (token == NULL) {
833 parse_err(SYNERR, "missing identifier inside encoding block.\n");
834 return;
835 }
836 if (strcmp(token,"enc_class")==0) { enc_class_parse(); }
837 skipws();
838 }
839 }
840 else {
841 parse_err(SYNERR, "Missing %c{ ... %c} block after encode keyword.\n",'%','%');
842 return;
843 }
844 }
846 //------------------------------enc_class_parse--------------------------------
847 void ADLParser::enc_class_parse(void) {
848 char *ec_name; // Name of encoding class being defined
850 // Get encoding class name
851 skipws(); // Skip whitespace
852 ec_name = get_ident();
853 if (ec_name == NULL) {
854 parse_err(SYNERR, "missing encoding class name after encode.\n");
855 return;
856 }
858 EncClass *encoding = _AD._encode->add_EncClass(ec_name);
859 encoding->_linenum = linenum();
861 skipws(); // Skip leading whitespace
862 // Check for optional parameter list
863 if (_curchar == '(') {
864 do {
865 char *pType = NULL; // parameter type
866 char *pName = NULL; // parameter name
868 next_char(); // skip open paren & comma characters
869 skipws();
870 if (_curchar == ')') break;
872 // Get parameter type
873 pType = get_ident();
874 if (pType == NULL) {
875 parse_err(SYNERR, "parameter type expected at %c\n", _curchar);
876 return;
877 }
879 skipws();
880 // Get parameter name
881 pName = get_ident();
882 if (pName == NULL) {
883 parse_err(SYNERR, "parameter name expected at %c\n", _curchar);
884 return;
885 }
887 // Record parameter type and name
888 encoding->add_parameter( pType, pName );
890 skipws();
891 } while(_curchar == ',');
893 if (_curchar != ')') parse_err(SYNERR, "missing ')'\n");
894 else {
895 next_char(); // Skip ')'
896 }
897 } // Done with parameter list
899 skipws();
900 // Check for block starting delimiters
901 if ((_curchar != '%') || (*(_ptr+1) != '{')) { // If not open block
902 parse_err(SYNERR, "missing '%c{' in enc_class definition\n", '%');
903 return;
904 }
905 next_char(); // Skip '%'
906 next_char(); // Skip '{'
908 enc_class_parse_block(encoding, ec_name);
909 }
912 void ADLParser::enc_class_parse_block(EncClass* encoding, char* ec_name) {
913 skipws_no_preproc(); // Skip leading whitespace
914 // Prepend location descriptor, for debugging; cf. ADLParser::find_cpp_block
915 if (_AD._adlocation_debug) {
916 encoding->add_code(get_line_string());
917 }
919 // Collect the parts of the encode description
920 // (1) strings that are passed through to output
921 // (2) replacement/substitution variable, preceeded by a '$'
922 while ( (_curchar != '%') && (*(_ptr+1) != '}') ) {
924 // (1)
925 // Check if there is a string to pass through to output
926 char *start = _ptr; // Record start of the next string
927 while ((_curchar != '$') && ((_curchar != '%') || (*(_ptr+1) != '}')) ) {
928 // If at the start of a comment, skip past it
929 if( (_curchar == '/') && ((*(_ptr+1) == '/') || (*(_ptr+1) == '*')) ) {
930 skipws_no_preproc();
931 } else {
932 // ELSE advance to the next character, or start of the next line
933 next_char_or_line();
934 }
935 }
936 // If a string was found, terminate it and record in EncClass
937 if ( start != _ptr ) {
938 *_ptr = '\0'; // Terminate the string
939 encoding->add_code(start);
940 }
942 // (2)
943 // If we are at a replacement variable,
944 // copy it and record in EncClass
945 if (_curchar == '$') {
946 // Found replacement Variable
947 char* rep_var = get_rep_var_ident_dup();
948 // Add flag to _strings list indicating we should check _rep_vars
949 encoding->add_rep_var(rep_var);
950 }
951 } // end while part of format description
952 next_char(); // Skip '%'
953 next_char(); // Skip '}'
955 skipws();
957 if (_AD._adlocation_debug) {
958 encoding->add_code(end_line_marker());
959 }
961 // Debug Stuff
962 if (_AD._adl_debug > 1) fprintf(stderr,"EncodingClass Form: %s\n", ec_name);
963 }
965 //------------------------------frame_parse-----------------------------------
966 void ADLParser::frame_parse(void) {
967 FrameForm *frame; // Information about stack-frame layout
968 char *desc = NULL; // String representation of frame
970 skipws(); // Skip leading whitespace
972 frame = new FrameForm(); // Build new Frame object
973 // Check for open block sequence
974 skipws(); // Skip leading whitespace
975 if (_curchar == '%' && *(_ptr+1) == '{') {
976 next_char(); next_char(); // Skip "%{"
977 skipws();
978 while (_curchar != '%' && *(_ptr+1) != '}') {
979 char *token = get_ident();
980 if (token == NULL) {
981 parse_err(SYNERR, "missing identifier inside frame block.\n");
982 return;
983 }
984 if (strcmp(token,"stack_direction")==0) {
985 stack_dir_parse(frame);
986 }
987 if (strcmp(token,"sync_stack_slots")==0) {
988 sync_stack_slots_parse(frame);
989 }
990 if (strcmp(token,"frame_pointer")==0) {
991 frame_pointer_parse(frame, false);
992 }
993 if (strcmp(token,"interpreter_frame_pointer")==0) {
994 interpreter_frame_pointer_parse(frame, false);
995 }
996 if (strcmp(token,"inline_cache_reg")==0) {
997 inline_cache_parse(frame, false);
998 }
999 if (strcmp(token,"compiler_method_oop_reg")==0) {
1000 parse_err(WARN, "Using obsolete Token, compiler_method_oop_reg");
1001 skipws();
1002 }
1003 if (strcmp(token,"interpreter_method_oop_reg")==0) {
1004 interpreter_method_oop_parse(frame, false);
1005 }
1006 if (strcmp(token,"cisc_spilling_operand_name")==0) {
1007 cisc_spilling_operand_name_parse(frame, false);
1008 }
1009 if (strcmp(token,"stack_alignment")==0) {
1010 stack_alignment_parse(frame);
1011 }
1012 if (strcmp(token,"return_addr")==0) {
1013 return_addr_parse(frame, false);
1014 }
1015 if (strcmp(token,"in_preserve_stack_slots")==0) {
1016 preserve_stack_parse(frame);
1017 }
1018 if (strcmp(token,"out_preserve_stack_slots")==0) {
1019 parse_err(WARN, "Using obsolete token, out_preserve_stack_slots");
1020 skipws();
1021 }
1022 if (strcmp(token,"varargs_C_out_slots_killed")==0) {
1023 frame->_varargs_C_out_slots_killed = parse_one_arg("varargs C out slots killed");
1024 }
1025 if (strcmp(token,"calling_convention")==0) {
1026 frame->_calling_convention = calling_convention_parse();
1027 }
1028 if (strcmp(token,"return_value")==0) {
1029 frame->_return_value = return_value_parse();
1030 }
1031 if (strcmp(token,"c_frame_pointer")==0) {
1032 frame_pointer_parse(frame, true);
1033 }
1034 if (strcmp(token,"c_return_addr")==0) {
1035 return_addr_parse(frame, true);
1036 }
1037 if (strcmp(token,"c_calling_convention")==0) {
1038 frame->_c_calling_convention = calling_convention_parse();
1039 }
1040 if (strcmp(token,"c_return_value")==0) {
1041 frame->_c_return_value = return_value_parse();
1042 }
1044 skipws();
1045 }
1046 }
1047 else {
1048 parse_err(SYNERR, "Missing %c{ ... %c} block after encode keyword.\n",'%','%');
1049 return;
1050 }
1051 // All Java versions are required, native versions are optional
1052 if(frame->_frame_pointer == NULL) {
1053 parse_err(SYNERR, "missing frame pointer definition in frame section.\n");
1054 return;
1055 }
1056 // !!!!! !!!!!
1057 // if(frame->_interpreter_frame_ptr_reg == NULL) {
1058 // parse_err(SYNERR, "missing interpreter frame pointer definition in frame section.\n");
1059 // return;
1060 // }
1061 if(frame->_alignment == NULL) {
1062 parse_err(SYNERR, "missing alignment definition in frame section.\n");
1063 return;
1064 }
1065 if(frame->_return_addr == NULL) {
1066 parse_err(SYNERR, "missing return address location in frame section.\n");
1067 return;
1068 }
1069 if(frame->_in_preserve_slots == NULL) {
1070 parse_err(SYNERR, "missing stack slot preservation definition in frame section.\n");
1071 return;
1072 }
1073 if(frame->_varargs_C_out_slots_killed == NULL) {
1074 parse_err(SYNERR, "missing varargs C out slots killed definition in frame section.\n");
1075 return;
1076 }
1077 if(frame->_calling_convention == NULL) {
1078 parse_err(SYNERR, "missing calling convention definition in frame section.\n");
1079 return;
1080 }
1081 if(frame->_return_value == NULL) {
1082 parse_err(SYNERR, "missing return value definition in frame section.\n");
1083 return;
1084 }
1085 // Fill natives in identically with the Java versions if not present.
1086 if(frame->_c_frame_pointer == NULL) {
1087 frame->_c_frame_pointer = frame->_frame_pointer;
1088 }
1089 if(frame->_c_return_addr == NULL) {
1090 frame->_c_return_addr = frame->_return_addr;
1091 frame->_c_return_addr_loc = frame->_return_addr_loc;
1092 }
1093 if(frame->_c_calling_convention == NULL) {
1094 frame->_c_calling_convention = frame->_calling_convention;
1095 }
1096 if(frame->_c_return_value == NULL) {
1097 frame->_c_return_value = frame->_return_value;
1098 }
1100 // Debug Stuff
1101 if (_AD._adl_debug > 1) fprintf(stderr,"Frame Form: %s\n", desc);
1103 // Create the EncodeForm for the architecture description.
1104 _AD.addForm(frame);
1105 // skipws();
1106 }
1108 //------------------------------stack_dir_parse--------------------------------
1109 void ADLParser::stack_dir_parse(FrameForm *frame) {
1110 char *direction = parse_one_arg("stack direction entry");
1111 if (strcmp(direction, "TOWARDS_LOW") == 0) {
1112 frame->_direction = false;
1113 }
1114 else if (strcmp(direction, "TOWARDS_HIGH") == 0) {
1115 frame->_direction = true;
1116 }
1117 else {
1118 parse_err(SYNERR, "invalid value inside stack direction entry.\n");
1119 return;
1120 }
1121 }
1123 //------------------------------sync_stack_slots_parse-------------------------
1124 void ADLParser::sync_stack_slots_parse(FrameForm *frame) {
1125 // Assign value into frame form
1126 frame->_sync_stack_slots = parse_one_arg("sync stack slots entry");
1127 }
1129 //------------------------------frame_pointer_parse----------------------------
1130 void ADLParser::frame_pointer_parse(FrameForm *frame, bool native) {
1131 char *frame_pointer = parse_one_arg("frame pointer entry");
1132 // Assign value into frame form
1133 if (native) { frame->_c_frame_pointer = frame_pointer; }
1134 else { frame->_frame_pointer = frame_pointer; }
1135 }
1137 //------------------------------interpreter_frame_pointer_parse----------------------------
1138 void ADLParser::interpreter_frame_pointer_parse(FrameForm *frame, bool native) {
1139 frame->_interpreter_frame_pointer_reg = parse_one_arg("interpreter frame pointer entry");
1140 }
1142 //------------------------------inline_cache_parse-----------------------------
1143 void ADLParser::inline_cache_parse(FrameForm *frame, bool native) {
1144 frame->_inline_cache_reg = parse_one_arg("inline cache reg entry");
1145 }
1147 //------------------------------interpreter_method_oop_parse------------------
1148 void ADLParser::interpreter_method_oop_parse(FrameForm *frame, bool native) {
1149 frame->_interpreter_method_oop_reg = parse_one_arg("method oop reg entry");
1150 }
1152 //------------------------------cisc_spilling_operand_parse---------------------
1153 void ADLParser::cisc_spilling_operand_name_parse(FrameForm *frame, bool native) {
1154 frame->_cisc_spilling_operand_name = parse_one_arg("cisc spilling operand name");
1155 }
1157 //------------------------------stack_alignment_parse--------------------------
1158 void ADLParser::stack_alignment_parse(FrameForm *frame) {
1159 char *alignment = parse_one_arg("stack alignment entry");
1160 // Assign value into frame
1161 frame->_alignment = alignment;
1162 }
1164 //------------------------------parse_one_arg-------------------------------
1165 char *ADLParser::parse_one_arg(const char *description) {
1166 char *token = NULL;
1167 if(_curchar == '(') {
1168 next_char();
1169 skipws();
1170 token = get_expr(description, ")");
1171 if (token == NULL) {
1172 parse_err(SYNERR, "missing value inside %s.\n", description);
1173 return NULL;
1174 }
1175 next_char(); // skip the close paren
1176 if(_curchar != ';') { // check for semi-colon
1177 parse_err(SYNERR, "missing %c in.\n", ';', description);
1178 return NULL;
1179 }
1180 next_char(); // skip the semi-colon
1181 }
1182 else {
1183 parse_err(SYNERR, "Missing %c in.\n", '(', description);
1184 return NULL;
1185 }
1187 trim(token);
1188 return token;
1189 }
1191 //------------------------------return_addr_parse------------------------------
1192 void ADLParser::return_addr_parse(FrameForm *frame, bool native) {
1193 bool in_register = true;
1194 if(_curchar == '(') {
1195 next_char();
1196 skipws();
1197 char *token = get_ident();
1198 if (token == NULL) {
1199 parse_err(SYNERR, "missing value inside return address entry.\n");
1200 return;
1201 }
1202 // check for valid values for stack/register
1203 if (strcmp(token, "REG") == 0) {
1204 in_register = true;
1205 }
1206 else if (strcmp(token, "STACK") == 0) {
1207 in_register = false;
1208 }
1209 else {
1210 parse_err(SYNERR, "invalid value inside return_address entry.\n");
1211 return;
1212 }
1213 if (native) { frame->_c_return_addr_loc = in_register; }
1214 else { frame->_return_addr_loc = in_register; }
1216 // Parse expression that specifies register or stack position
1217 skipws();
1218 char *token2 = get_expr("return address entry", ")");
1219 if (token2 == NULL) {
1220 parse_err(SYNERR, "missing value inside return address entry.\n");
1221 return;
1222 }
1223 next_char(); // skip the close paren
1224 if (native) { frame->_c_return_addr = token2; }
1225 else { frame->_return_addr = token2; }
1227 if(_curchar != ';') { // check for semi-colon
1228 parse_err(SYNERR, "missing %c in return address entry.\n", ';');
1229 return;
1230 }
1231 next_char(); // skip the semi-colon
1232 }
1233 else {
1234 parse_err(SYNERR, "Missing %c in return_address entry.\n", '(');
1235 }
1236 }
1238 //------------------------------preserve_stack_parse---------------------------
1239 void ADLParser::preserve_stack_parse(FrameForm *frame) {
1240 if(_curchar == '(') {
1241 char *token = get_paren_expr("preserve_stack_slots");
1242 frame->_in_preserve_slots = token;
1244 if(_curchar != ';') { // check for semi-colon
1245 parse_err(SYNERR, "missing %c in preserve stack slot entry.\n", ';');
1246 return;
1247 }
1248 next_char(); // skip the semi-colon
1249 }
1250 else {
1251 parse_err(SYNERR, "Missing %c in preserve stack slot entry.\n", '(');
1252 }
1253 }
1255 //------------------------------calling_convention_parse-----------------------
1256 char *ADLParser::calling_convention_parse() {
1257 char *desc = NULL; // String representation of calling_convention
1259 skipws(); // Skip leading whitespace
1260 if ( (desc = find_cpp_block("calling convention block")) == NULL ) {
1261 parse_err(SYNERR, "incorrect or missing block for 'calling_convention'.\n");
1262 }
1263 return desc;
1264 }
1266 //------------------------------return_value_parse-----------------------------
1267 char *ADLParser::return_value_parse() {
1268 char *desc = NULL; // String representation of calling_convention
1270 skipws(); // Skip leading whitespace
1271 if ( (desc = find_cpp_block("return value block")) == NULL ) {
1272 parse_err(SYNERR, "incorrect or missing block for 'return_value'.\n");
1273 }
1274 return desc;
1275 }
1277 //------------------------------ins_pipe_parse---------------------------------
1278 void ADLParser::ins_pipe_parse(InstructForm &instr) {
1279 char * ident;
1281 skipws();
1282 if ( _curchar != '(' ) { // Check for delimiter
1283 parse_err(SYNERR, "missing \"(\" in ins_pipe definition\n");
1284 return;
1285 }
1287 next_char();
1288 ident = get_ident(); // Grab next identifier
1290 if (ident == NULL) {
1291 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar);
1292 return;
1293 }
1295 skipws();
1296 if ( _curchar != ')' ) { // Check for delimiter
1297 parse_err(SYNERR, "missing \")\" in ins_pipe definition\n");
1298 return;
1299 }
1301 next_char(); // skip the close paren
1302 if(_curchar != ';') { // check for semi-colon
1303 parse_err(SYNERR, "missing %c in return value entry.\n", ';');
1304 return;
1305 }
1306 next_char(); // skip the semi-colon
1308 // Check ident for validity
1309 if (_AD._pipeline && !_AD._pipeline->_classlist.search(ident)) {
1310 parse_err(SYNERR, "\"%s\" is not a valid pipeline class\n", ident);
1311 return;
1312 }
1314 // Add this instruction to the list in the pipeline class
1315 _AD._pipeline->_classdict[ident]->is_pipeclass()->_instructs.addName(instr._ident);
1317 // Set the name of the pipeline class in the instruction
1318 instr._ins_pipe = ident;
1319 return;
1320 }
1322 //------------------------------pipe_parse-------------------------------------
1323 void ADLParser::pipe_parse(void) {
1324 PipelineForm *pipeline; // Encode class for instruction/operand
1325 char * ident;
1327 pipeline = new PipelineForm(); // Build new Source object
1328 _AD.addForm(pipeline);
1330 skipws(); // Skip leading whitespace
1331 // Check for block delimiter
1332 if ( (_curchar != '%')
1333 || ( next_char(), (_curchar != '{')) ) {
1334 parse_err(SYNERR, "missing '%%{' in pipeline definition\n");
1335 return;
1336 }
1337 next_char(); // Maintain the invariant
1338 do {
1339 ident = get_ident(); // Grab next identifier
1340 if (ident == NULL) {
1341 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar);
1342 continue;
1343 }
1344 if (!strcmp(ident, "resources" )) resource_parse(*pipeline);
1345 else if (!strcmp(ident, "pipe_desc" )) pipe_desc_parse(*pipeline);
1346 else if (!strcmp(ident, "pipe_class")) pipe_class_parse(*pipeline);
1347 else if (!strcmp(ident, "define")) {
1348 skipws();
1349 if ( (_curchar != '%')
1350 || ( next_char(), (_curchar != '{')) ) {
1351 parse_err(SYNERR, "expected '%%{'\n");
1352 return;
1353 }
1354 next_char(); skipws();
1356 char *node_class = get_ident();
1357 if (node_class == NULL) {
1358 parse_err(SYNERR, "expected identifier, found \"%c\"\n", _curchar);
1359 return;
1360 }
1362 skipws();
1363 if (_curchar != ',' && _curchar != '=') {
1364 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar);
1365 break;
1366 }
1367 next_char(); skipws();
1369 char *pipe_class = get_ident();
1370 if (pipe_class == NULL) {
1371 parse_err(SYNERR, "expected identifier, found \"%c\"\n", _curchar);
1372 return;
1373 }
1374 if (_curchar != ';' ) {
1375 parse_err(SYNERR, "expected `;`, found '%c'\n", _curchar);
1376 break;
1377 }
1378 next_char(); // Skip over semi-colon
1380 skipws();
1381 if ( (_curchar != '%')
1382 || ( next_char(), (_curchar != '}')) ) {
1383 parse_err(SYNERR, "expected '%%}', found \"%c\"\n", _curchar);
1384 }
1385 next_char();
1387 // Check ident for validity
1388 if (_AD._pipeline && !_AD._pipeline->_classlist.search(pipe_class)) {
1389 parse_err(SYNERR, "\"%s\" is not a valid pipeline class\n", pipe_class);
1390 return;
1391 }
1393 // Add this machine node to the list in the pipeline class
1394 _AD._pipeline->_classdict[pipe_class]->is_pipeclass()->_instructs.addName(node_class);
1396 MachNodeForm *machnode = new MachNodeForm(node_class); // Create new machnode form
1397 machnode->_machnode_pipe = pipe_class;
1399 _AD.addForm(machnode);
1400 }
1401 else if (!strcmp(ident, "attributes")) {
1402 bool vsi_seen = false;
1404 skipws();
1405 if ( (_curchar != '%')
1406 || ( next_char(), (_curchar != '{')) ) {
1407 parse_err(SYNERR, "expected '%%{'\n");
1408 return;
1409 }
1410 next_char(); skipws();
1412 while (_curchar != '%') {
1413 ident = get_ident();
1414 if (ident == NULL)
1415 break;
1417 if (!strcmp(ident, "variable_size_instructions")) {
1418 skipws();
1419 if (_curchar == ';') {
1420 next_char(); skipws();
1421 }
1423 pipeline->_variableSizeInstrs = true;
1424 vsi_seen = true;
1425 continue;
1426 }
1428 if (!strcmp(ident, "fixed_size_instructions")) {
1429 skipws();
1430 if (_curchar == ';') {
1431 next_char(); skipws();
1432 }
1434 pipeline->_variableSizeInstrs = false;
1435 vsi_seen = true;
1436 continue;
1437 }
1439 if (!strcmp(ident, "branch_has_delay_slot")) {
1440 skipws();
1441 if (_curchar == ';') {
1442 next_char(); skipws();
1443 }
1445 pipeline->_branchHasDelaySlot = true;
1446 continue;
1447 }
1449 if (!strcmp(ident, "max_instructions_per_bundle")) {
1450 skipws();
1451 if (_curchar != '=') {
1452 parse_err(SYNERR, "expected `=`\n");
1453 break;
1454 }
1456 next_char(); skipws();
1457 pipeline->_maxInstrsPerBundle = get_int();
1458 skipws();
1460 if (_curchar == ';') {
1461 next_char(); skipws();
1462 }
1464 continue;
1465 }
1467 if (!strcmp(ident, "max_bundles_per_cycle")) {
1468 skipws();
1469 if (_curchar != '=') {
1470 parse_err(SYNERR, "expected `=`\n");
1471 break;
1472 }
1474 next_char(); skipws();
1475 pipeline->_maxBundlesPerCycle = get_int();
1476 skipws();
1478 if (_curchar == ';') {
1479 next_char(); skipws();
1480 }
1482 continue;
1483 }
1485 if (!strcmp(ident, "instruction_unit_size")) {
1486 skipws();
1487 if (_curchar != '=') {
1488 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar);
1489 break;
1490 }
1492 next_char(); skipws();
1493 pipeline->_instrUnitSize = get_int();
1494 skipws();
1496 if (_curchar == ';') {
1497 next_char(); skipws();
1498 }
1500 continue;
1501 }
1503 if (!strcmp(ident, "bundle_unit_size")) {
1504 skipws();
1505 if (_curchar != '=') {
1506 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar);
1507 break;
1508 }
1510 next_char(); skipws();
1511 pipeline->_bundleUnitSize = get_int();
1512 skipws();
1514 if (_curchar == ';') {
1515 next_char(); skipws();
1516 }
1518 continue;
1519 }
1521 if (!strcmp(ident, "instruction_fetch_unit_size")) {
1522 skipws();
1523 if (_curchar != '=') {
1524 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar);
1525 break;
1526 }
1528 next_char(); skipws();
1529 pipeline->_instrFetchUnitSize = get_int();
1530 skipws();
1532 if (_curchar == ';') {
1533 next_char(); skipws();
1534 }
1536 continue;
1537 }
1539 if (!strcmp(ident, "instruction_fetch_units")) {
1540 skipws();
1541 if (_curchar != '=') {
1542 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar);
1543 break;
1544 }
1546 next_char(); skipws();
1547 pipeline->_instrFetchUnits = get_int();
1548 skipws();
1550 if (_curchar == ';') {
1551 next_char(); skipws();
1552 }
1554 continue;
1555 }
1557 if (!strcmp(ident, "nops")) {
1558 skipws();
1559 if (_curchar != '(') {
1560 parse_err(SYNERR, "expected `(`, found '%c'\n", _curchar);
1561 break;
1562 }
1564 next_char(); skipws();
1566 while (_curchar != ')') {
1567 ident = get_ident();
1568 if (ident == NULL) {
1569 parse_err(SYNERR, "expected identifier for nop instruction, found '%c'\n", _curchar);
1570 break;
1571 }
1573 pipeline->_noplist.addName(ident);
1574 pipeline->_nopcnt++;
1575 skipws();
1577 if (_curchar == ',') {
1578 next_char(); skipws();
1579 }
1580 }
1582 next_char(); skipws();
1584 if (_curchar == ';') {
1585 next_char(); skipws();
1586 }
1588 continue;
1589 }
1591 parse_err(SYNERR, "unknown specifier \"%s\"\n", ident);
1592 }
1594 if ( (_curchar != '%')
1595 || ( next_char(), (_curchar != '}')) ) {
1596 parse_err(SYNERR, "expected '%%}', found \"%c\"\n", _curchar);
1597 }
1598 next_char(); skipws();
1600 if (pipeline->_maxInstrsPerBundle == 0)
1601 parse_err(SYNERR, "\"max_instructions_per_bundle\" unspecified\n");
1602 if (pipeline->_instrUnitSize == 0 && pipeline->_bundleUnitSize == 0)
1603 parse_err(SYNERR, "\"instruction_unit_size\" and \"bundle_unit_size\" unspecified\n");
1604 if (pipeline->_instrFetchUnitSize == 0)
1605 parse_err(SYNERR, "\"instruction_fetch_unit_size\" unspecified\n");
1606 if (pipeline->_instrFetchUnits == 0)
1607 parse_err(SYNERR, "\"instruction_fetch_units\" unspecified\n");
1608 if (!vsi_seen)
1609 parse_err(SYNERR, "\"variable_size_instruction\" or \"fixed_size_instruction\" unspecified\n");
1610 }
1611 else { // Done with staticly defined parts of instruction definition
1612 parse_err(SYNERR, "expected one of \"resources\", \"pipe_desc\", \"pipe_class\", found \"%s\"\n", ident);
1613 return;
1614 }
1615 skipws();
1616 if (_curchar == ';')
1617 skipws();
1618 } while(_curchar != '%');
1620 next_char();
1621 if (_curchar != '}') {
1622 parse_err(SYNERR, "missing \"%%}\" in pipeline definition\n");
1623 return;
1624 }
1626 next_char();
1627 }
1629 //------------------------------resource_parse----------------------------
1630 void ADLParser::resource_parse(PipelineForm &pipeline) {
1631 ResourceForm *resource;
1632 char * ident;
1633 char * expr;
1634 unsigned mask;
1635 pipeline._rescount = 0;
1637 skipws(); // Skip leading whitespace
1639 if (_curchar != '(') {
1640 parse_err(SYNERR, "missing \"(\" in resource definition\n");
1641 return;
1642 }
1644 do {
1645 next_char(); // Skip "(" or ","
1646 ident = get_ident(); // Grab next identifier
1648 if (_AD._adl_debug > 1) {
1649 if (ident != NULL) {
1650 fprintf(stderr, "resource_parse: identifier: %s\n", ident);
1651 }
1652 }
1654 if (ident == NULL) {
1655 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
1656 return;
1657 }
1658 skipws();
1660 if (_curchar != '=') {
1661 mask = (1 << pipeline._rescount++);
1662 }
1663 else {
1664 next_char(); skipws();
1665 expr = get_ident(); // Grab next identifier
1666 if (expr == NULL) {
1667 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
1668 return;
1669 }
1670 resource = (ResourceForm *) pipeline._resdict[expr];
1671 if (resource == NULL) {
1672 parse_err(SYNERR, "resource \"%s\" is not defined\n", expr);
1673 return;
1674 }
1675 mask = resource->mask();
1677 skipws();
1678 while (_curchar == '|') {
1679 next_char(); skipws();
1681 expr = get_ident(); // Grab next identifier
1682 if (expr == NULL) {
1683 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
1684 return;
1685 }
1687 resource = (ResourceForm *) pipeline._resdict[expr]; // Look up the value
1688 if (resource == NULL) {
1689 parse_err(SYNERR, "resource \"%s\" is not defined\n", expr);
1690 return;
1691 }
1693 mask |= resource->mask();
1694 skipws();
1695 }
1696 }
1698 resource = new ResourceForm(mask);
1700 pipeline._resdict.Insert(ident, resource);
1701 pipeline._reslist.addName(ident);
1702 } while (_curchar == ',');
1704 if (_curchar != ')') {
1705 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
1706 return;
1707 }
1709 next_char(); // Skip ")"
1710 if (_curchar == ';')
1711 next_char(); // Skip ";"
1712 }
1714 //------------------------------resource_parse----------------------------
1715 void ADLParser::pipe_desc_parse(PipelineForm &pipeline) {
1716 char * ident;
1718 skipws(); // Skip leading whitespace
1720 if (_curchar != '(') {
1721 parse_err(SYNERR, "missing \"(\" in pipe_desc definition\n");
1722 return;
1723 }
1725 do {
1726 next_char(); // Skip "(" or ","
1727 ident = get_ident(); // Grab next identifier
1728 if (ident == NULL) {
1729 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
1730 return;
1731 }
1733 // Add the name to the list
1734 pipeline._stages.addName(ident);
1735 pipeline._stagecnt++;
1737 skipws();
1738 } while (_curchar == ',');
1740 if (_curchar != ')') {
1741 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
1742 return;
1743 }
1745 next_char(); // Skip ")"
1746 if (_curchar == ';')
1747 next_char(); // Skip ";"
1748 }
1750 //------------------------------pipe_class_parse--------------------------
1751 void ADLParser::pipe_class_parse(PipelineForm &pipeline) {
1752 PipeClassForm *pipe_class;
1753 char * ident;
1754 char * stage;
1755 char * read_or_write;
1756 int is_write;
1757 int is_read;
1758 OperandForm *oper;
1760 skipws(); // Skip leading whitespace
1762 ident = get_ident(); // Grab next identifier
1764 if (ident == NULL) {
1765 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
1766 return;
1767 }
1769 // Create a record for the pipe_class
1770 pipe_class = new PipeClassForm(ident, ++pipeline._classcnt);
1771 pipeline._classdict.Insert(ident, pipe_class);
1772 pipeline._classlist.addName(ident);
1774 // Then get the operands
1775 skipws();
1776 if (_curchar != '(') {
1777 parse_err(SYNERR, "missing \"(\" in pipe_class definition\n");
1778 }
1779 // Parse the operand list
1780 else get_oplist(pipe_class->_parameters, pipe_class->_localNames);
1781 skipws(); // Skip leading whitespace
1782 // Check for block delimiter
1783 if ( (_curchar != '%')
1784 || ( next_char(), (_curchar != '{')) ) {
1785 parse_err(SYNERR, "missing \"%%{\" in pipe_class definition\n");
1786 return;
1787 }
1788 next_char();
1790 do {
1791 ident = get_ident(); // Grab next identifier
1792 if (ident == NULL) {
1793 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
1794 continue;
1795 }
1796 skipws();
1798 if (!strcmp(ident, "fixed_latency")) {
1799 skipws();
1800 if (_curchar != '(') {
1801 parse_err(SYNERR, "missing \"(\" in latency definition\n");
1802 return;
1803 }
1804 next_char(); skipws();
1805 if( !isdigit(_curchar) ) {
1806 parse_err(SYNERR, "number expected for \"%c\" in latency definition\n", _curchar);
1807 return;
1808 }
1809 int fixed_latency = get_int();
1810 skipws();
1811 if (_curchar != ')') {
1812 parse_err(SYNERR, "missing \")\" in latency definition\n");
1813 return;
1814 }
1815 next_char(); skipws();
1816 if (_curchar != ';') {
1817 parse_err(SYNERR, "missing \";\" in latency definition\n");
1818 return;
1819 }
1821 pipe_class->setFixedLatency(fixed_latency);
1822 next_char(); skipws();
1823 continue;
1824 }
1826 if (!strcmp(ident, "zero_instructions") ||
1827 !strcmp(ident, "no_instructions")) {
1828 skipws();
1829 if (_curchar != ';') {
1830 parse_err(SYNERR, "missing \";\" in latency definition\n");
1831 return;
1832 }
1834 pipe_class->setInstructionCount(0);
1835 next_char(); skipws();
1836 continue;
1837 }
1839 if (!strcmp(ident, "one_instruction_with_delay_slot") ||
1840 !strcmp(ident, "single_instruction_with_delay_slot")) {
1841 skipws();
1842 if (_curchar != ';') {
1843 parse_err(SYNERR, "missing \";\" in latency definition\n");
1844 return;
1845 }
1847 pipe_class->setInstructionCount(1);
1848 pipe_class->setBranchDelay(true);
1849 next_char(); skipws();
1850 continue;
1851 }
1853 if (!strcmp(ident, "one_instruction") ||
1854 !strcmp(ident, "single_instruction")) {
1855 skipws();
1856 if (_curchar != ';') {
1857 parse_err(SYNERR, "missing \";\" in latency definition\n");
1858 return;
1859 }
1861 pipe_class->setInstructionCount(1);
1862 next_char(); skipws();
1863 continue;
1864 }
1866 if (!strcmp(ident, "instructions_in_first_bundle") ||
1867 !strcmp(ident, "instruction_count")) {
1868 skipws();
1870 int number_of_instructions = 1;
1872 if (_curchar != '(') {
1873 parse_err(SYNERR, "\"(\" expected at \"%c\"\n", _curchar);
1874 continue;
1875 }
1877 next_char(); skipws();
1878 number_of_instructions = get_int();
1880 skipws();
1881 if (_curchar != ')') {
1882 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
1883 continue;
1884 }
1886 next_char(); skipws();
1887 if (_curchar != ';') {
1888 parse_err(SYNERR, "missing \";\" in latency definition\n");
1889 return;
1890 }
1892 pipe_class->setInstructionCount(number_of_instructions);
1893 next_char(); skipws();
1894 continue;
1895 }
1897 if (!strcmp(ident, "multiple_bundles")) {
1898 skipws();
1899 if (_curchar != ';') {
1900 parse_err(SYNERR, "missing \";\" after multiple bundles\n");
1901 return;
1902 }
1904 pipe_class->setMultipleBundles(true);
1905 next_char(); skipws();
1906 continue;
1907 }
1909 if (!strcmp(ident, "has_delay_slot")) {
1910 skipws();
1911 if (_curchar != ';') {
1912 parse_err(SYNERR, "missing \";\" after \"has_delay_slot\"\n");
1913 return;
1914 }
1916 pipe_class->setBranchDelay(true);
1917 next_char(); skipws();
1918 continue;
1919 }
1921 if (!strcmp(ident, "force_serialization")) {
1922 skipws();
1923 if (_curchar != ';') {
1924 parse_err(SYNERR, "missing \";\" after \"force_serialization\"\n");
1925 return;
1926 }
1928 pipe_class->setForceSerialization(true);
1929 next_char(); skipws();
1930 continue;
1931 }
1933 if (!strcmp(ident, "may_have_no_code")) {
1934 skipws();
1935 if (_curchar != ';') {
1936 parse_err(SYNERR, "missing \";\" after \"may_have_no_code\"\n");
1937 return;
1938 }
1940 pipe_class->setMayHaveNoCode(true);
1941 next_char(); skipws();
1942 continue;
1943 }
1945 const Form *parm = pipe_class->_localNames[ident];
1946 if (parm != NULL) {
1947 oper = parm->is_operand();
1948 if (oper == NULL && !parm->is_opclass()) {
1949 parse_err(SYNERR, "operand name expected at %s\n", ident);
1950 continue;
1951 }
1953 if (_curchar != ':') {
1954 parse_err(SYNERR, "\":\" expected at \"%c\"\n", _curchar);
1955 continue;
1956 }
1957 next_char(); skipws();
1958 stage = get_ident();
1959 if (stage == NULL) {
1960 parse_err(SYNERR, "pipeline stage identifier expected at \"%c\"\n", _curchar);
1961 continue;
1962 }
1964 skipws();
1965 if (_curchar != '(') {
1966 parse_err(SYNERR, "\"(\" expected at \"%c\"\n", _curchar);
1967 continue;
1968 }
1970 next_char();
1971 read_or_write = get_ident();
1972 if (read_or_write == NULL) {
1973 parse_err(SYNERR, "\"read\" or \"write\" expected at \"%c\"\n", _curchar);
1974 continue;
1975 }
1977 is_read = strcmp(read_or_write, "read") == 0;
1978 is_write = strcmp(read_or_write, "write") == 0;
1979 if (!is_read && !is_write) {
1980 parse_err(SYNERR, "\"read\" or \"write\" expected at \"%c\"\n", _curchar);
1981 continue;
1982 }
1984 skipws();
1985 if (_curchar != ')') {
1986 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
1987 continue;
1988 }
1990 next_char(); skipws();
1991 int more_instrs = 0;
1992 if (_curchar == '+') {
1993 next_char(); skipws();
1994 if (_curchar < '0' || _curchar > '9') {
1995 parse_err(SYNERR, "<number> expected at \"%c\"\n", _curchar);
1996 continue;
1997 }
1998 while (_curchar >= '0' && _curchar <= '9') {
1999 more_instrs *= 10;
2000 more_instrs += _curchar - '0';
2001 next_char();
2002 }
2003 skipws();
2004 }
2006 PipeClassOperandForm *pipe_operand = new PipeClassOperandForm(stage, is_write, more_instrs);
2007 pipe_class->_localUsage.Insert(ident, pipe_operand);
2009 if (_curchar == '%')
2010 continue;
2012 if (_curchar != ';') {
2013 parse_err(SYNERR, "\";\" expected at \"%c\"\n", _curchar);
2014 continue;
2015 }
2016 next_char(); skipws();
2017 continue;
2018 }
2020 // Scan for Resource Specifier
2021 const Form *res = pipeline._resdict[ident];
2022 if (res != NULL) {
2023 int cyclecnt = 1;
2024 if (_curchar != ':') {
2025 parse_err(SYNERR, "\":\" expected at \"%c\"\n", _curchar);
2026 continue;
2027 }
2028 next_char(); skipws();
2029 stage = get_ident();
2030 if (stage == NULL) {
2031 parse_err(SYNERR, "pipeline stage identifier expected at \"%c\"\n", _curchar);
2032 continue;
2033 }
2035 skipws();
2036 if (_curchar == '(') {
2037 next_char();
2038 cyclecnt = get_int();
2040 skipws();
2041 if (_curchar != ')') {
2042 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
2043 continue;
2044 }
2046 next_char(); skipws();
2047 }
2049 PipeClassResourceForm *resource = new PipeClassResourceForm(ident, stage, cyclecnt);
2050 int stagenum = pipeline._stages.index(stage);
2051 if (pipeline._maxcycleused < (stagenum+cyclecnt))
2052 pipeline._maxcycleused = (stagenum+cyclecnt);
2053 pipe_class->_resUsage.addForm(resource);
2055 if (_curchar == '%')
2056 continue;
2058 if (_curchar != ';') {
2059 parse_err(SYNERR, "\";\" expected at \"%c\"\n", _curchar);
2060 continue;
2061 }
2062 next_char(); skipws();
2063 continue;
2064 }
2066 parse_err(SYNERR, "resource expected at \"%s\"\n", ident);
2067 return;
2068 } while(_curchar != '%');
2070 next_char();
2071 if (_curchar != '}') {
2072 parse_err(SYNERR, "missing \"%%}\" in pipe_class definition\n");
2073 return;
2074 }
2076 next_char();
2077 }
2079 //------------------------------peep_parse-------------------------------------
2080 void ADLParser::peep_parse(void) {
2081 Peephole *peep; // Pointer to current peephole rule form
2082 char *desc = NULL; // String representation of rule
2084 skipws(); // Skip leading whitespace
2086 peep = new Peephole(); // Build new Peephole object
2087 // Check for open block sequence
2088 skipws(); // Skip leading whitespace
2089 if (_curchar == '%' && *(_ptr+1) == '{') {
2090 next_char(); next_char(); // Skip "%{"
2091 skipws();
2092 while (_curchar != '%' && *(_ptr+1) != '}') {
2093 char *token = get_ident();
2094 if (token == NULL) {
2095 parse_err(SYNERR, "missing identifier inside peephole rule.\n");
2096 return;
2097 }
2098 // check for legal subsections of peephole rule
2099 if (strcmp(token,"peepmatch")==0) {
2100 peep_match_parse(*peep); }
2101 else if (strcmp(token,"peepconstraint")==0) {
2102 peep_constraint_parse(*peep); }
2103 else if (strcmp(token,"peepreplace")==0) {
2104 peep_replace_parse(*peep); }
2105 else {
2106 parse_err(SYNERR, "expected peepmatch, peepconstraint, or peepreplace for identifier %s.\n", token);
2107 }
2108 skipws();
2109 }
2110 }
2111 else {
2112 parse_err(SYNERR, "Missing %%{ ... %%} block after peephole keyword.\n");
2113 return;
2114 }
2115 next_char(); // Skip past '%'
2116 next_char(); // Skip past '}'
2117 }
2119 // ******************** Private Level 2 Parse Functions ********************
2120 //------------------------------constraint_parse------------------------------
2121 Constraint *ADLParser::constraint_parse(void) {
2122 char *func;
2123 char *arg;
2125 // Check for constraint expression
2126 skipws();
2127 if (_curchar != '(') {
2128 parse_err(SYNERR, "missing constraint expression, (...)\n");
2129 return NULL;
2130 }
2131 next_char(); // Skip past '('
2133 // Get constraint function
2134 skipws();
2135 func = get_ident();
2136 if (func == NULL) {
2137 parse_err(SYNERR, "missing function in constraint expression.\n");
2138 return NULL;
2139 }
2140 if (strcmp(func,"ALLOC_IN_RC")==0
2141 || strcmp(func,"IS_R_CLASS")==0) {
2142 // Check for '(' before argument
2143 skipws();
2144 if (_curchar != '(') {
2145 parse_err(SYNERR, "missing '(' for constraint function's argument.\n");
2146 return NULL;
2147 }
2148 next_char();
2150 // Get it's argument
2151 skipws();
2152 arg = get_ident();
2153 if (arg == NULL) {
2154 parse_err(SYNERR, "missing argument for constraint function %s\n",func);
2155 return NULL;
2156 }
2157 // Check for ')' after argument
2158 skipws();
2159 if (_curchar != ')') {
2160 parse_err(SYNERR, "missing ')' after constraint function argument %s\n",arg);
2161 return NULL;
2162 }
2163 next_char();
2164 } else {
2165 parse_err(SYNERR, "Invalid constraint function %s\n",func);
2166 return NULL;
2167 }
2169 // Check for closing paren and ';'
2170 skipws();
2171 if (_curchar != ')') {
2172 parse_err(SYNERR, "Missing ')' for constraint function %s\n",func);
2173 return NULL;
2174 }
2175 next_char();
2176 skipws();
2177 if (_curchar != ';') {
2178 parse_err(SYNERR, "Missing ';' after constraint.\n");
2179 return NULL;
2180 }
2181 next_char();
2183 // Create new "Constraint"
2184 Constraint *constraint = new Constraint(func,arg);
2185 return constraint;
2186 }
2188 //------------------------------constr_parse-----------------------------------
2189 ConstructRule *ADLParser::construct_parse(void) {
2190 return NULL;
2191 }
2194 //------------------------------reg_def_parse----------------------------------
2195 void ADLParser::reg_def_parse(void) {
2196 char *rname; // Name of register being defined
2198 // Get register name
2199 skipws(); // Skip whitespace
2200 rname = get_ident();
2201 if (rname == NULL) {
2202 parse_err(SYNERR, "missing register name after reg_def\n");
2203 return;
2204 }
2206 // Check for definition of register calling convention (save on call, ...),
2207 // register save type, and register encoding value.
2208 skipws();
2209 char *callconv = NULL;
2210 char *c_conv = NULL;
2211 char *idealtype = NULL;
2212 char *encoding = NULL;
2213 char *concrete = NULL;
2214 if (_curchar == '(') {
2215 next_char();
2216 callconv = get_ident();
2217 // Parse the internal calling convention, must be NS, SOC, SOE, or AS.
2218 if (callconv == NULL) {
2219 parse_err(SYNERR, "missing register calling convention value\n");
2220 return;
2221 }
2222 if(strcmp(callconv, "SOC") && strcmp(callconv,"SOE") &&
2223 strcmp(callconv, "NS") && strcmp(callconv, "AS")) {
2224 parse_err(SYNERR, "invalid value for register calling convention\n");
2225 }
2226 skipws();
2227 if (_curchar != ',') {
2228 parse_err(SYNERR, "missing comma in register definition statement\n");
2229 return;
2230 }
2231 next_char();
2233 // Parse the native calling convention, must be NS, SOC, SOE, AS
2234 c_conv = get_ident();
2235 if (c_conv == NULL) {
2236 parse_err(SYNERR, "missing register native calling convention value\n");
2237 return;
2238 }
2239 if(strcmp(c_conv, "SOC") && strcmp(c_conv,"SOE") &&
2240 strcmp(c_conv, "NS") && strcmp(c_conv, "AS")) {
2241 parse_err(SYNERR, "invalid value for register calling convention\n");
2242 }
2243 skipws();
2244 if (_curchar != ',') {
2245 parse_err(SYNERR, "missing comma in register definition statement\n");
2246 return;
2247 }
2248 next_char();
2249 skipws();
2251 // Parse the ideal save type
2252 idealtype = get_ident();
2253 if (idealtype == NULL) {
2254 parse_err(SYNERR, "missing register save type value\n");
2255 return;
2256 }
2257 skipws();
2258 if (_curchar != ',') {
2259 parse_err(SYNERR, "missing comma in register definition statement\n");
2260 return;
2261 }
2262 next_char();
2263 skipws();
2265 // Parse the encoding value
2266 encoding = get_expr("encoding", ",");
2267 if (encoding == NULL) {
2268 parse_err(SYNERR, "missing register encoding value\n");
2269 return;
2270 }
2271 trim(encoding);
2272 if (_curchar != ',') {
2273 parse_err(SYNERR, "missing comma in register definition statement\n");
2274 return;
2275 }
2276 next_char();
2277 skipws();
2278 // Parse the concrete name type
2279 // concrete = get_ident();
2280 concrete = get_expr("concrete", ")");
2281 if (concrete == NULL) {
2282 parse_err(SYNERR, "missing vm register name value\n");
2283 return;
2284 }
2286 if (_curchar != ')') {
2287 parse_err(SYNERR, "missing ')' in register definition statement\n");
2288 return;
2289 }
2290 next_char();
2291 }
2293 // Check for closing ';'
2294 skipws();
2295 if (_curchar != ';') {
2296 parse_err(SYNERR, "missing ';' after reg_def\n");
2297 return;
2298 }
2299 next_char(); // move past ';'
2301 // Debug Stuff
2302 if (_AD._adl_debug > 1) {
2303 fprintf(stderr,"Register Definition: %s ( %s, %s %s )\n", rname,
2304 (callconv ? callconv : ""), (c_conv ? c_conv : ""), concrete);
2305 }
2307 // Record new register definition.
2308 _AD._register->addRegDef(rname, callconv, c_conv, idealtype, encoding, concrete);
2309 return;
2310 }
2312 //------------------------------reg_class_parse--------------------------------
2313 void ADLParser::reg_class_parse(void) {
2314 char *cname; // Name of register class being defined
2316 // Get register class name
2317 skipws(); // Skip leading whitespace
2318 cname = get_ident();
2319 if (cname == NULL) {
2320 parse_err(SYNERR, "missing register class name after 'reg_class'\n");
2321 return;
2322 }
2323 // Debug Stuff
2324 if (_AD._adl_debug >1) fprintf(stderr,"Register Class: %s\n", cname);
2326 RegClass *reg_class = _AD._register->addRegClass(cname);
2328 // Collect registers in class
2329 skipws();
2330 if (_curchar == '(') {
2331 next_char(); // Skip '('
2332 skipws();
2333 while (_curchar != ')') {
2334 char *rname = get_ident();
2335 if (rname==NULL) {
2336 parse_err(SYNERR, "missing identifier inside reg_class list.\n");
2337 return;
2338 }
2339 RegDef *regDef = _AD._register->getRegDef(rname);
2340 if (!regDef) {
2341 parse_err(SEMERR, "unknown identifier %s inside reg_class list.\n", rname);
2342 } else {
2343 reg_class->addReg(regDef); // add regDef to regClass
2344 }
2346 // Check for ',' and position to next token.
2347 skipws();
2348 if (_curchar == ',') {
2349 next_char(); // Skip trailing ','
2350 skipws();
2351 }
2352 }
2353 next_char(); // Skip closing ')'
2354 } else if (_curchar == '%') {
2355 char *code = find_cpp_block("reg class");
2356 if (code == NULL) {
2357 parse_err(SYNERR, "missing code declaration for reg class.\n");
2358 return;
2359 }
2360 reg_class->_user_defined = code;
2361 return;
2362 }
2364 // Check for terminating ';'
2365 skipws();
2366 if (_curchar != ';') {
2367 parse_err(SYNERR, "missing ';' at end of reg_class definition.\n");
2368 return;
2369 }
2370 next_char(); // Skip trailing ';'
2372 // Check RegClass size, must be <= 32 registers in class.
2374 return;
2375 }
2377 //------------------------------alloc_class_parse------------------------------
2378 void ADLParser::alloc_class_parse(void) {
2379 char *name; // Name of allocation class being defined
2381 // Get allocation class name
2382 skipws(); // Skip leading whitespace
2383 name = get_ident();
2384 if (name == NULL) {
2385 parse_err(SYNERR, "missing allocation class name after 'reg_class'\n");
2386 return;
2387 }
2388 // Debug Stuff
2389 if (_AD._adl_debug >1) fprintf(stderr,"Allocation Class: %s\n", name);
2391 AllocClass *alloc_class = _AD._register->addAllocClass(name);
2393 // Collect registers in class
2394 skipws();
2395 if (_curchar == '(') {
2396 next_char(); // Skip '('
2397 skipws();
2398 while (_curchar != ')') {
2399 char *rname = get_ident();
2400 if (rname==NULL) {
2401 parse_err(SYNERR, "missing identifier inside reg_class list.\n");
2402 return;
2403 }
2404 // Check if name is a RegDef
2405 RegDef *regDef = _AD._register->getRegDef(rname);
2406 if (regDef) {
2407 alloc_class->addReg(regDef); // add regDef to allocClass
2408 } else {
2410 // name must be a RegDef or a RegClass
2411 parse_err(SYNERR, "name %s should be a previously defined reg_def.\n", rname);
2412 return;
2413 }
2415 // Check for ',' and position to next token.
2416 skipws();
2417 if (_curchar == ',') {
2418 next_char(); // Skip trailing ','
2419 skipws();
2420 }
2421 }
2422 next_char(); // Skip closing ')'
2423 }
2425 // Check for terminating ';'
2426 skipws();
2427 if (_curchar != ';') {
2428 parse_err(SYNERR, "missing ';' at end of reg_class definition.\n");
2429 return;
2430 }
2431 next_char(); // Skip trailing ';'
2433 return;
2434 }
2436 //------------------------------peep_match_child_parse-------------------------
2437 InstructForm *ADLParser::peep_match_child_parse(PeepMatch &match, int parent, int &position, int input){
2438 char *token = NULL;
2439 int lparen = 0; // keep track of parenthesis nesting depth
2440 int rparen = 0; // position of instruction at this depth
2441 InstructForm *inst_seen = NULL;
2443 // Walk the match tree,
2444 // Record <parent, position, instruction name, input position>
2445 while ( lparen >= rparen ) {
2446 skipws();
2447 // Left paren signals start of an input, collect with recursive call
2448 if (_curchar == '(') {
2449 ++lparen;
2450 next_char();
2451 ( void ) peep_match_child_parse(match, parent, position, rparen);
2452 }
2453 // Right paren signals end of an input, may be more
2454 else if (_curchar == ')') {
2455 ++rparen;
2456 if( rparen == lparen ) { // IF rparen matches an lparen I've seen
2457 next_char(); // move past ')'
2458 } else { // ELSE leave ')' for parent
2459 assert( rparen == lparen + 1, "Should only see one extra ')'");
2460 // if an instruction was not specified for this paren-pair
2461 if( ! inst_seen ) { // record signal entry
2462 match.add_instruction( parent, position, NameList::_signal, input );
2463 ++position;
2464 }
2465 // ++input; // TEMPORARY
2466 return inst_seen;
2467 }
2468 }
2469 // if no parens, then check for instruction name
2470 // This instruction is the parent of a sub-tree
2471 else if ((token = get_ident_dup()) != NULL) {
2472 const Form *form = _AD._globalNames[token];
2473 if (form) {
2474 InstructForm *inst = form->is_instruction();
2475 // Record the first instruction at this level
2476 if( inst_seen == NULL ) {
2477 inst_seen = inst;
2478 }
2479 if (inst) {
2480 match.add_instruction( parent, position, token, input );
2481 parent = position;
2482 ++position;
2483 } else {
2484 parse_err(SYNERR, "instruction name expected at identifier %s.\n",
2485 token);
2486 return inst_seen;
2487 }
2488 }
2489 else {
2490 parse_err(SYNERR, "missing identifier in peepmatch rule.\n");
2491 return NULL;
2492 }
2493 }
2494 else {
2495 parse_err(SYNERR, "missing identifier in peepmatch rule.\n");
2496 return NULL;
2497 }
2499 } // end while
2501 assert( false, "ShouldNotReachHere();");
2502 return NULL;
2503 }
2505 //------------------------------peep_match_parse-------------------------------
2506 // Syntax for a peepmatch rule
2507 //
2508 // peepmatch ( root_instr_name [(instruction subtree)] [,(instruction subtree)]* );
2509 //
2510 void ADLParser::peep_match_parse(Peephole &peep) {
2512 skipws();
2513 // Check the structure of the rule
2514 // Check for open paren
2515 if (_curchar != '(') {
2516 parse_err(SYNERR, "missing '(' at start of peepmatch rule.\n");
2517 return;
2518 }
2519 next_char(); // skip '('
2521 // Construct PeepMatch and parse the peepmatch rule.
2522 PeepMatch *match = new PeepMatch(_ptr);
2523 int parent = -1; // parent of root
2524 int position = 0; // zero-based positions
2525 int input = 0; // input position in parent's operands
2526 InstructForm *root= peep_match_child_parse( *match, parent, position, input);
2527 if( root == NULL ) {
2528 parse_err(SYNERR, "missing instruction-name at start of peepmatch.\n");
2529 return;
2530 }
2532 if( _curchar != ')' ) {
2533 parse_err(SYNERR, "missing ')' at end of peepmatch.\n");
2534 return;
2535 }
2536 next_char(); // skip ')'
2538 // Check for closing semicolon
2539 skipws();
2540 if( _curchar != ';' ) {
2541 parse_err(SYNERR, "missing ';' at end of peepmatch.\n");
2542 return;
2543 }
2544 next_char(); // skip ';'
2546 // Store match into peep, and store peep into instruction
2547 peep.add_match(match);
2548 root->append_peephole(&peep);
2549 }
2551 //------------------------------peep_constraint_parse--------------------------
2552 // Syntax for a peepconstraint rule
2553 // A parenthesized list of relations between operands in peepmatch subtree
2554 //
2555 // peepconstraint %{
2556 // (instruction_number.operand_name
2557 // relational_op
2558 // instruction_number.operand_name OR register_name
2559 // [, ...] );
2560 //
2561 // // instruction numbers are zero-based using topological order in peepmatch
2562 //
2563 void ADLParser::peep_constraint_parse(Peephole &peep) {
2565 skipws();
2566 // Check the structure of the rule
2567 // Check for open paren
2568 if (_curchar != '(') {
2569 parse_err(SYNERR, "missing '(' at start of peepconstraint rule.\n");
2570 return;
2571 }
2572 else {
2573 next_char(); // Skip '('
2574 }
2576 // Check for a constraint
2577 skipws();
2578 while( _curchar != ')' ) {
2579 // Get information on the left instruction and its operand
2580 // left-instructions's number
2581 int left_inst = get_int();
2582 // Left-instruction's operand
2583 skipws();
2584 if( _curchar != '.' ) {
2585 parse_err(SYNERR, "missing '.' in peepconstraint after instruction number.\n");
2586 return;
2587 }
2588 next_char(); // Skip '.'
2589 char *left_op = get_ident_dup();
2591 skipws();
2592 // Collect relational operator
2593 char *relation = get_relation_dup();
2595 skipws();
2596 // Get information on the right instruction and its operand
2597 int right_inst; // Right-instructions's number
2598 if( isdigit(_curchar) ) {
2599 right_inst = get_int();
2600 // Right-instruction's operand
2601 skipws();
2602 if( _curchar != '.' ) {
2603 parse_err(SYNERR, "missing '.' in peepconstraint after instruction number.\n");
2604 return;
2605 }
2606 next_char(); // Skip '.'
2607 } else {
2608 right_inst = -1; // Flag as being a register constraint
2609 }
2611 char *right_op = get_ident_dup();
2613 // Construct the next PeepConstraint
2614 PeepConstraint *constraint = new PeepConstraint( left_inst, left_op,
2615 relation,
2616 right_inst, right_op );
2617 // And append it to the list for this peephole rule
2618 peep.append_constraint( constraint );
2620 // Check for another constraint, or end of rule
2621 skipws();
2622 if( _curchar == ',' ) {
2623 next_char(); // Skip ','
2624 skipws();
2625 }
2626 else if( _curchar != ')' ) {
2627 parse_err(SYNERR, "expected ',' or ')' after peephole constraint.\n");
2628 return;
2629 }
2630 } // end while( processing constraints )
2631 next_char(); // Skip ')'
2633 // Check for terminating ';'
2634 skipws();
2635 if (_curchar != ';') {
2636 parse_err(SYNERR, "missing ';' at end of peepconstraint.\n");
2637 return;
2638 }
2639 next_char(); // Skip trailing ';'
2640 }
2643 //------------------------------peep_replace_parse-----------------------------
2644 // Syntax for a peepreplace rule
2645 // root instruction name followed by a
2646 // parenthesized list of whitespace separated instruction.operand specifiers
2647 //
2648 // peepreplace ( instr_name ( [instruction_number.operand_name]* ) );
2649 //
2650 //
2651 void ADLParser::peep_replace_parse(Peephole &peep) {
2652 int lparen = 0; // keep track of parenthesis nesting depth
2653 int rparen = 0; // keep track of parenthesis nesting depth
2654 int icount = 0; // count of instructions in rule for naming
2655 char *str = NULL;
2656 char *token = NULL;
2658 skipws();
2659 // Check for open paren
2660 if (_curchar != '(') {
2661 parse_err(SYNERR, "missing '(' at start of peepreplace rule.\n");
2662 return;
2663 }
2664 else {
2665 lparen++;
2666 next_char();
2667 }
2669 // Check for root instruction
2670 char *inst = get_ident_dup();
2671 const Form *form = _AD._globalNames[inst];
2672 if( form == NULL || form->is_instruction() == NULL ) {
2673 parse_err(SYNERR, "Instruction name expected at start of peepreplace.\n");
2674 return;
2675 }
2677 // Store string representation of rule into replace
2678 PeepReplace *replace = new PeepReplace(str);
2679 replace->add_instruction( inst );
2681 skipws();
2682 // Start of root's operand-list
2683 if (_curchar != '(') {
2684 parse_err(SYNERR, "missing '(' at peepreplace root's operand-list.\n");
2685 return;
2686 }
2687 else {
2688 lparen++;
2689 next_char();
2690 }
2692 skipws();
2693 // Get the list of operands
2694 while( _curchar != ')' ) {
2695 // Get information on an instruction and its operand
2696 // instructions's number
2697 int inst_num = get_int();
2698 // Left-instruction's operand
2699 skipws();
2700 if( _curchar != '.' ) {
2701 parse_err(SYNERR, "missing '.' in peepreplace after instruction number.\n");
2702 return;
2703 }
2704 next_char(); // Skip '.'
2705 char *inst_op = get_ident_dup();
2706 if( inst_op == NULL ) {
2707 parse_err(SYNERR, "missing operand identifier in peepreplace.\n");
2708 return;
2709 }
2711 // Record this operand's position in peepmatch
2712 replace->add_operand( inst_num, inst_op );
2713 skipws();
2714 }
2716 // Check for the end of operands list
2717 skipws();
2718 assert( _curchar == ')', "While loop should have advanced to ')'.");
2719 next_char(); // Skip ')'
2721 skipws();
2722 // Check for end of peepreplace
2723 if( _curchar != ')' ) {
2724 parse_err(SYNERR, "missing ')' at end of peepmatch.\n");
2725 parse_err(SYNERR, "Support one replacement instruction.\n");
2726 return;
2727 }
2728 next_char(); // Skip ')'
2730 // Check for closing semicolon
2731 skipws();
2732 if( _curchar != ';' ) {
2733 parse_err(SYNERR, "missing ';' at end of peepreplace.\n");
2734 return;
2735 }
2736 next_char(); // skip ';'
2738 // Store replace into peep
2739 peep.add_replace( replace );
2740 }
2742 //------------------------------pred_parse-------------------------------------
2743 Predicate *ADLParser::pred_parse(void) {
2744 Predicate *predicate; // Predicate class for operand
2745 char *rule = NULL; // String representation of predicate
2747 skipws(); // Skip leading whitespace
2748 int line = linenum();
2749 if ( (rule = get_paren_expr("pred expression", true)) == NULL ) {
2750 parse_err(SYNERR, "incorrect or missing expression for 'predicate'\n");
2751 return NULL;
2752 }
2753 // Debug Stuff
2754 if (_AD._adl_debug > 1) fprintf(stderr,"Predicate: %s\n", rule);
2755 if (_curchar != ';') {
2756 parse_err(SYNERR, "missing ';' in predicate definition\n");
2757 return NULL;
2758 }
2759 next_char(); // Point after the terminator
2761 predicate = new Predicate(rule); // Build new predicate object
2762 skipws();
2763 return predicate;
2764 }
2767 //------------------------------ins_encode_parse_block-------------------------
2768 // Parse the block form of ins_encode. See ins_encode_parse for more details
2769 void ADLParser::ins_encode_parse_block(InstructForm& inst) {
2770 // Create a new encoding name based on the name of the instruction
2771 // definition, which should be unique.
2772 const char* prefix = "__ins_encode_";
2773 char* ec_name = (char*) malloc(strlen(inst._ident) + strlen(prefix) + 1);
2774 sprintf(ec_name, "%s%s", prefix, inst._ident);
2776 assert(_AD._encode->encClass(ec_name) == NULL, "shouldn't already exist");
2777 EncClass* encoding = _AD._encode->add_EncClass(ec_name);
2778 encoding->_linenum = linenum();
2780 // synthesize the arguments list for the enc_class from the
2781 // arguments to the instruct definition.
2782 const char* param = NULL;
2783 inst._parameters.reset();
2784 while ((param = inst._parameters.iter()) != NULL) {
2785 OperandForm* opForm = (OperandForm*) inst._localNames[param];
2786 encoding->add_parameter(opForm->_ident, param);
2787 }
2789 if (!inst._is_postalloc_expand) {
2790 // Define a MacroAssembler instance for use by the encoding. The
2791 // name is chosen to match the __ idiom used for assembly in other
2792 // parts of hotspot and assumes the existence of the standard
2793 // #define __ _masm.
2794 encoding->add_code(" MacroAssembler _masm(&cbuf);\n");
2795 }
2797 // Parse the following %{ }% block
2798 ins_encode_parse_block_impl(inst, encoding, ec_name);
2800 // Build an encoding rule which invokes the encoding rule we just
2801 // created, passing all arguments that we received.
2802 InsEncode* encrule = new InsEncode(); // Encode class for instruction
2803 NameAndList* params = encrule->add_encode(ec_name);
2804 inst._parameters.reset();
2805 while ((param = inst._parameters.iter()) != NULL) {
2806 params->add_entry(param);
2807 }
2809 // Check for duplicate ins_encode sections after parsing the block
2810 // so that parsing can continue and find any other errors.
2811 if (inst._insencode != NULL) {
2812 parse_err(SYNERR, "Multiple ins_encode sections defined\n");
2813 return;
2814 }
2816 // Set encode class of this instruction.
2817 inst._insencode = encrule;
2818 }
2821 void ADLParser::ins_encode_parse_block_impl(InstructForm& inst, EncClass* encoding, char* ec_name) {
2822 skipws_no_preproc(); // Skip leading whitespace
2823 // Prepend location descriptor, for debugging; cf. ADLParser::find_cpp_block
2824 if (_AD._adlocation_debug) {
2825 encoding->add_code(get_line_string());
2826 }
2828 // Collect the parts of the encode description
2829 // (1) strings that are passed through to output
2830 // (2) replacement/substitution variable, preceeded by a '$'
2831 while ((_curchar != '%') && (*(_ptr+1) != '}')) {
2833 // (1)
2834 // Check if there is a string to pass through to output
2835 char *start = _ptr; // Record start of the next string
2836 while ((_curchar != '$') && ((_curchar != '%') || (*(_ptr+1) != '}')) ) {
2837 // If at the start of a comment, skip past it
2838 if( (_curchar == '/') && ((*(_ptr+1) == '/') || (*(_ptr+1) == '*')) ) {
2839 skipws_no_preproc();
2840 } else {
2841 // ELSE advance to the next character, or start of the next line
2842 next_char_or_line();
2843 }
2844 }
2845 // If a string was found, terminate it and record in EncClass
2846 if (start != _ptr) {
2847 *_ptr = '\0'; // Terminate the string
2848 encoding->add_code(start);
2849 }
2851 // (2)
2852 // If we are at a replacement variable,
2853 // copy it and record in EncClass
2854 if (_curchar == '$') {
2855 // Found replacement Variable
2856 char* rep_var = get_rep_var_ident_dup();
2858 // Add flag to _strings list indicating we should check _rep_vars
2859 encoding->add_rep_var(rep_var);
2861 skipws();
2863 // Check if this instruct is a MachConstantNode.
2864 if (strcmp(rep_var, "constanttablebase") == 0) {
2865 // This instruct is a MachConstantNode.
2866 inst.set_needs_constant_base(true);
2867 if (strncmp("MachCall", inst.mach_base_class(_globalNames), strlen("MachCall")) != 0 ) {
2868 inst.set_is_mach_constant(true);
2869 }
2871 if (_curchar == '(') {
2872 parse_err(SYNERR, "constanttablebase in instruct %s cannot have an argument "
2873 "(only constantaddress and constantoffset)", ec_name);
2874 return;
2875 }
2876 }
2877 else if ((strcmp(rep_var, "constantaddress") == 0) ||
2878 (strcmp(rep_var, "constantoffset") == 0)) {
2879 // This instruct is a MachConstantNode.
2880 inst.set_is_mach_constant(true);
2882 // If the constant keyword has an argument, parse it.
2883 if (_curchar == '(') constant_parse(inst);
2884 }
2885 }
2886 } // end while part of format description
2887 next_char(); // Skip '%'
2888 next_char(); // Skip '}'
2890 skipws();
2892 if (_AD._adlocation_debug) {
2893 encoding->add_code(end_line_marker());
2894 }
2896 // Debug Stuff
2897 if (_AD._adl_debug > 1) fprintf(stderr, "EncodingClass Form: %s\n", ec_name);
2898 }
2901 //------------------------------ins_encode_parse-------------------------------
2902 // Encode rules have the form
2903 // ins_encode( encode_class_name(parameter_list), ... );
2904 //
2905 // The "encode_class_name" must be defined in the encode section
2906 // The parameter list contains $names that are locals.
2907 //
2908 // Alternatively it can be written like this:
2909 //
2910 // ins_encode %{
2911 // ... // body
2912 // %}
2913 //
2914 // which synthesizes a new encoding class taking the same arguments as
2915 // the InstructForm, and automatically prefixes the definition with:
2916 //
2917 // MacroAssembler masm(&cbuf);\n");
2918 //
2919 // making it more compact to take advantage of the MacroAssembler and
2920 // placing the assembly closer to it's use by instructions.
2921 void ADLParser::ins_encode_parse(InstructForm& inst) {
2923 // Parse encode class name
2924 skipws(); // Skip whitespace
2925 if (_curchar != '(') {
2926 // Check for ins_encode %{ form
2927 if ((_curchar == '%') && (*(_ptr+1) == '{')) {
2928 next_char(); // Skip '%'
2929 next_char(); // Skip '{'
2931 // Parse the block form of ins_encode
2932 ins_encode_parse_block(inst);
2933 return;
2934 }
2936 parse_err(SYNERR, "missing '%%{' or '(' in ins_encode definition\n");
2937 return;
2938 }
2939 next_char(); // move past '('
2940 skipws();
2942 InsEncode *encrule = new InsEncode(); // Encode class for instruction
2943 encrule->_linenum = linenum();
2944 char *ec_name = NULL; // String representation of encode rule
2945 // identifier is optional.
2946 while (_curchar != ')') {
2947 ec_name = get_ident();
2948 if (ec_name == NULL) {
2949 parse_err(SYNERR, "Invalid encode class name after 'ins_encode('.\n");
2950 return;
2951 }
2952 // Check that encoding is defined in the encode section
2953 EncClass *encode_class = _AD._encode->encClass(ec_name);
2954 if (encode_class == NULL) {
2955 // Like to defer checking these till later...
2956 // parse_err(WARN, "Using an undefined encode class '%s' in 'ins_encode'.\n", ec_name);
2957 }
2959 // Get list for encode method's parameters
2960 NameAndList *params = encrule->add_encode(ec_name);
2962 // Parse the parameters to this encode method.
2963 skipws();
2964 if ( _curchar == '(' ) {
2965 next_char(); // move past '(' for parameters
2967 // Parse the encode method's parameters
2968 while (_curchar != ')') {
2969 char *param = get_ident_or_literal_constant("encoding operand");
2970 if ( param != NULL ) {
2972 // Check if this instruct is a MachConstantNode.
2973 if (strcmp(param, "constanttablebase") == 0) {
2974 // This instruct is a MachConstantNode.
2975 inst.set_needs_constant_base(true);
2976 if (strncmp("MachCall", inst.mach_base_class(_globalNames), strlen("MachCall")) != 0 ) {
2977 inst.set_is_mach_constant(true);
2978 }
2980 if (_curchar == '(') {
2981 parse_err(SYNERR, "constanttablebase in instruct %s cannot have an argument "
2982 "(only constantaddress and constantoffset)", ec_name);
2983 return;
2984 }
2985 } else {
2986 // Found a parameter:
2987 // Check it is a local name, add it to the list, then check for more
2988 // New: allow hex constants as parameters to an encode method.
2989 // New: allow parenthesized expressions as parameters.
2990 // New: allow "primary", "secondary", "tertiary" as parameters.
2991 // New: allow user-defined register name as parameter
2992 if ( (inst._localNames[param] == NULL) &&
2993 !ADLParser::is_literal_constant(param) &&
2994 (Opcode::as_opcode_type(param) == Opcode::NOT_AN_OPCODE) &&
2995 ((_AD._register == NULL ) || (_AD._register->getRegDef(param) == NULL)) ) {
2996 parse_err(SYNERR, "Using non-locally defined parameter %s for encoding %s.\n", param, ec_name);
2997 return;
2998 }
2999 }
3000 params->add_entry(param);
3002 skipws();
3003 if (_curchar == ',' ) {
3004 // More parameters to come
3005 next_char(); // move past ',' between parameters
3006 skipws(); // Skip to next parameter
3007 }
3008 else if (_curchar == ')') {
3009 // Done with parameter list
3010 }
3011 else {
3012 // Only ',' or ')' are valid after a parameter name
3013 parse_err(SYNERR, "expected ',' or ')' after parameter %s.\n",
3014 ec_name);
3015 return;
3016 }
3018 } else {
3019 skipws();
3020 // Did not find a parameter
3021 if (_curchar == ',') {
3022 parse_err(SYNERR, "Expected encode parameter before ',' in encoding %s.\n", ec_name);
3023 return;
3024 }
3025 if (_curchar != ')') {
3026 parse_err(SYNERR, "Expected ')' after encode parameters.\n");
3027 return;
3028 }
3029 }
3030 } // WHILE loop collecting parameters
3031 next_char(); // move past ')' at end of parameters
3032 } // done with parameter list for encoding
3034 // Check for ',' or ')' after encoding
3035 skipws(); // move to character after parameters
3036 if ( _curchar == ',' ) {
3037 // Found a ','
3038 next_char(); // move past ',' between encode methods
3039 skipws();
3040 }
3041 else if ( _curchar != ')' ) {
3042 // If not a ',' then only a ')' is allowed
3043 parse_err(SYNERR, "Expected ')' after encoding %s.\n", ec_name);
3044 return;
3045 }
3047 // Check for ',' separating parameters
3048 // if ( _curchar != ',' && _curchar != ')' ) {
3049 // parse_err(SYNERR, "expected ',' or ')' after encode method inside ins_encode.\n");
3050 // return NULL;
3051 // }
3053 } // done parsing ins_encode methods and their parameters
3054 if (_curchar != ')') {
3055 parse_err(SYNERR, "Missing ')' at end of ins_encode description.\n");
3056 return;
3057 }
3058 next_char(); // move past ')'
3059 skipws(); // Skip leading whitespace
3061 if ( _curchar != ';' ) {
3062 parse_err(SYNERR, "Missing ';' at end of ins_encode.\n");
3063 return;
3064 }
3065 next_char(); // move past ';'
3066 skipws(); // be friendly to oper_parse()
3068 // Check for duplicate ins_encode sections after parsing the block
3069 // so that parsing can continue and find any other errors.
3070 if (inst._insencode != NULL) {
3071 parse_err(SYNERR, "Multiple ins_encode sections defined\n");
3072 return;
3073 }
3075 // Debug Stuff
3076 if (_AD._adl_debug > 1) fprintf(stderr,"Instruction Encode: %s\n", ec_name);
3078 // Set encode class of this instruction.
3079 inst._insencode = encrule;
3080 }
3082 //------------------------------postalloc_expand_parse---------------------------
3083 // Encode rules have the form
3084 // postalloc_expand( encode_class_name(parameter_list) );
3085 //
3086 // The "encode_class_name" must be defined in the encode section.
3087 // The parameter list contains $names that are locals.
3088 //
3089 // This is just a copy of ins_encode_parse without the loop.
3090 void ADLParser::postalloc_expand_parse(InstructForm& inst) {
3091 inst._is_postalloc_expand = true;
3093 // Parse encode class name.
3094 skipws(); // Skip whitespace.
3095 if (_curchar != '(') {
3096 // Check for postalloc_expand %{ form
3097 if ((_curchar == '%') && (*(_ptr+1) == '{')) {
3098 next_char(); // Skip '%'
3099 next_char(); // Skip '{'
3101 // Parse the block form of postalloc_expand
3102 ins_encode_parse_block(inst);
3103 return;
3104 }
3106 parse_err(SYNERR, "missing '(' in postalloc_expand definition\n");
3107 return;
3108 }
3109 next_char(); // Move past '('.
3110 skipws();
3112 InsEncode *encrule = new InsEncode(); // Encode class for instruction.
3113 encrule->_linenum = linenum();
3114 char *ec_name = NULL; // String representation of encode rule.
3115 // identifier is optional.
3116 if (_curchar != ')') {
3117 ec_name = get_ident();
3118 if (ec_name == NULL) {
3119 parse_err(SYNERR, "Invalid postalloc_expand class name after 'postalloc_expand('.\n");
3120 return;
3121 }
3122 // Check that encoding is defined in the encode section.
3123 EncClass *encode_class = _AD._encode->encClass(ec_name);
3125 // Get list for encode method's parameters
3126 NameAndList *params = encrule->add_encode(ec_name);
3128 // Parse the parameters to this encode method.
3129 skipws();
3130 if (_curchar == '(') {
3131 next_char(); // Move past '(' for parameters.
3133 // Parse the encode method's parameters.
3134 while (_curchar != ')') {
3135 char *param = get_ident_or_literal_constant("encoding operand");
3136 if (param != NULL) {
3137 // Found a parameter:
3139 // First check for constant table support.
3141 // Check if this instruct is a MachConstantNode.
3142 if (strcmp(param, "constanttablebase") == 0) {
3143 // This instruct is a MachConstantNode.
3144 inst.set_needs_constant_base(true);
3145 if (strncmp("MachCall", inst.mach_base_class(_globalNames), strlen("MachCall")) != 0 ) {
3146 inst.set_is_mach_constant(true);
3147 }
3149 if (_curchar == '(') {
3150 parse_err(SYNERR, "constanttablebase in instruct %s cannot have an argument "
3151 "(only constantaddress and constantoffset)", ec_name);
3152 return;
3153 }
3154 }
3155 else if ((strcmp(param, "constantaddress") == 0) ||
3156 (strcmp(param, "constantoffset") == 0)) {
3157 // This instruct is a MachConstantNode.
3158 inst.set_is_mach_constant(true);
3160 // If the constant keyword has an argument, parse it.
3161 if (_curchar == '(') constant_parse(inst);
3162 }
3164 // Else check it is a local name, add it to the list, then check for more.
3165 // New: allow hex constants as parameters to an encode method.
3166 // New: allow parenthesized expressions as parameters.
3167 // New: allow "primary", "secondary", "tertiary" as parameters.
3168 // New: allow user-defined register name as parameter.
3169 else if ((inst._localNames[param] == NULL) &&
3170 !ADLParser::is_literal_constant(param) &&
3171 (Opcode::as_opcode_type(param) == Opcode::NOT_AN_OPCODE) &&
3172 ((_AD._register == NULL) || (_AD._register->getRegDef(param) == NULL))) {
3173 parse_err(SYNERR, "Using non-locally defined parameter %s for encoding %s.\n", param, ec_name);
3174 return;
3175 }
3176 params->add_entry(param);
3178 skipws();
3179 if (_curchar == ',') {
3180 // More parameters to come.
3181 next_char(); // Move past ',' between parameters.
3182 skipws(); // Skip to next parameter.
3183 } else if (_curchar == ')') {
3184 // Done with parameter list
3185 } else {
3186 // Only ',' or ')' are valid after a parameter name.
3187 parse_err(SYNERR, "expected ',' or ')' after parameter %s.\n", ec_name);
3188 return;
3189 }
3191 } else {
3192 skipws();
3193 // Did not find a parameter.
3194 if (_curchar == ',') {
3195 parse_err(SYNERR, "Expected encode parameter before ',' in postalloc_expand %s.\n", ec_name);
3196 return;
3197 }
3198 if (_curchar != ')') {
3199 parse_err(SYNERR, "Expected ')' after postalloc_expand parameters.\n");
3200 return;
3201 }
3202 }
3203 } // WHILE loop collecting parameters.
3204 next_char(); // Move past ')' at end of parameters.
3205 } // Done with parameter list for encoding.
3207 // Check for ',' or ')' after encoding.
3208 skipws(); // Move to character after parameters.
3209 if (_curchar != ')') {
3210 // Only a ')' is allowed.
3211 parse_err(SYNERR, "Expected ')' after postalloc_expand %s.\n", ec_name);
3212 return;
3213 }
3214 } // Done parsing postalloc_expand method and their parameters.
3215 if (_curchar != ')') {
3216 parse_err(SYNERR, "Missing ')' at end of postalloc_expand description.\n");
3217 return;
3218 }
3219 next_char(); // Move past ')'.
3220 skipws(); // Skip leading whitespace.
3222 if (_curchar != ';') {
3223 parse_err(SYNERR, "Missing ';' at end of postalloc_expand.\n");
3224 return;
3225 }
3226 next_char(); // Move past ';'.
3227 skipws(); // Be friendly to oper_parse().
3229 // Debug Stuff.
3230 if (_AD._adl_debug > 1) fprintf(stderr, "Instruction postalloc_expand: %s\n", ec_name);
3232 // Set encode class of this instruction.
3233 inst._insencode = encrule;
3234 }
3237 //------------------------------constant_parse---------------------------------
3238 // Parse a constant expression.
3239 void ADLParser::constant_parse(InstructForm& inst) {
3240 // Create a new encoding name based on the name of the instruction
3241 // definition, which should be unique.
3242 const char* prefix = "__constant_";
3243 char* ec_name = (char*) malloc(strlen(inst._ident) + strlen(prefix) + 1);
3244 sprintf(ec_name, "%s%s", prefix, inst._ident);
3246 assert(_AD._encode->encClass(ec_name) == NULL, "shouldn't already exist");
3247 EncClass* encoding = _AD._encode->add_EncClass(ec_name);
3248 encoding->_linenum = linenum();
3250 // synthesize the arguments list for the enc_class from the
3251 // arguments to the instruct definition.
3252 const char* param = NULL;
3253 inst._parameters.reset();
3254 while ((param = inst._parameters.iter()) != NULL) {
3255 OperandForm* opForm = (OperandForm*) inst._localNames[param];
3256 encoding->add_parameter(opForm->_ident, param);
3257 }
3259 // Parse the following ( ) expression.
3260 constant_parse_expression(encoding, ec_name);
3262 // Build an encoding rule which invokes the encoding rule we just
3263 // created, passing all arguments that we received.
3264 InsEncode* encrule = new InsEncode(); // Encode class for instruction
3265 NameAndList* params = encrule->add_encode(ec_name);
3266 inst._parameters.reset();
3267 while ((param = inst._parameters.iter()) != NULL) {
3268 params->add_entry(param);
3269 }
3271 // Set encode class of this instruction.
3272 inst._constant = encrule;
3273 }
3276 //------------------------------constant_parse_expression----------------------
3277 void ADLParser::constant_parse_expression(EncClass* encoding, char* ec_name) {
3278 skipws();
3280 // Prepend location descriptor, for debugging; cf. ADLParser::find_cpp_block
3281 if (_AD._adlocation_debug) {
3282 encoding->add_code(get_line_string());
3283 }
3285 // Start code line.
3286 encoding->add_code(" _constant = C->constant_table().add");
3288 // Parse everything in ( ) expression.
3289 encoding->add_code("(this, ");
3290 next_char(); // Skip '('
3291 int parens_depth = 1;
3293 // Collect the parts of the constant expression.
3294 // (1) strings that are passed through to output
3295 // (2) replacement/substitution variable, preceeded by a '$'
3296 while (parens_depth > 0) {
3297 if (_curchar == '(') {
3298 parens_depth++;
3299 encoding->add_code("(");
3300 next_char();
3301 }
3302 else if (_curchar == ')') {
3303 parens_depth--;
3304 if (parens_depth > 0)
3305 encoding->add_code(")");
3306 next_char();
3307 }
3308 else {
3309 // (1)
3310 // Check if there is a string to pass through to output
3311 char *start = _ptr; // Record start of the next string
3312 while ((_curchar != '$') && (_curchar != '(') && (_curchar != ')')) {
3313 next_char();
3314 }
3315 // If a string was found, terminate it and record in EncClass
3316 if (start != _ptr) {
3317 *_ptr = '\0'; // Terminate the string
3318 encoding->add_code(start);
3319 }
3321 // (2)
3322 // If we are at a replacement variable, copy it and record in EncClass.
3323 if (_curchar == '$') {
3324 // Found replacement Variable
3325 char* rep_var = get_rep_var_ident_dup();
3326 encoding->add_rep_var(rep_var);
3327 }
3328 }
3329 }
3331 // Finish code line.
3332 encoding->add_code(");");
3334 if (_AD._adlocation_debug) {
3335 encoding->add_code(end_line_marker());
3336 }
3338 // Debug Stuff
3339 if (_AD._adl_debug > 1) fprintf(stderr, "EncodingClass Form: %s\n", ec_name);
3340 }
3343 //------------------------------size_parse-----------------------------------
3344 // Parse a 'size(<expr>)' attribute which specifies the size of the
3345 // emitted instructions in bytes. <expr> can be a C++ expression,
3346 // e.g. a constant.
3347 char* ADLParser::size_parse(InstructForm *instr) {
3348 char* sizeOfInstr = NULL;
3350 // Get value of the instruction's size
3351 skipws();
3353 // Parse size
3354 sizeOfInstr = get_paren_expr("size expression");
3355 if (sizeOfInstr == NULL) {
3356 parse_err(SYNERR, "size of opcode expected at %c\n", _curchar);
3357 return NULL;
3358 }
3360 skipws();
3362 // Check for terminator
3363 if (_curchar != ';') {
3364 parse_err(SYNERR, "missing ';' in ins_attrib definition\n");
3365 return NULL;
3366 }
3367 next_char(); // Advance past the ';'
3368 skipws(); // necessary for instr_parse()
3370 // Debug Stuff
3371 if (_AD._adl_debug > 1) {
3372 if (sizeOfInstr != NULL) {
3373 fprintf(stderr,"size of opcode: %s\n", sizeOfInstr);
3374 }
3375 }
3377 return sizeOfInstr;
3378 }
3381 //------------------------------opcode_parse-----------------------------------
3382 Opcode * ADLParser::opcode_parse(InstructForm *instr) {
3383 char *primary = NULL;
3384 char *secondary = NULL;
3385 char *tertiary = NULL;
3387 char *val = NULL;
3388 Opcode *opcode = NULL;
3390 // Get value of the instruction's opcode
3391 skipws();
3392 if (_curchar != '(') { // Check for parenthesized operand list
3393 parse_err(SYNERR, "missing '(' in expand instruction declaration\n");
3394 return NULL;
3395 }
3396 next_char(); // skip open paren
3397 skipws();
3398 if (_curchar != ')') {
3399 // Parse primary, secondary, and tertiary opcodes, if provided.
3400 if ( ((primary = get_ident_or_literal_constant("primary opcode")) == NULL) ) {
3401 parse_err(SYNERR, "primary hex opcode expected at %c\n", _curchar);
3402 return NULL;
3403 }
3404 skipws();
3405 if (_curchar == ',') {
3406 next_char();
3407 skipws();
3408 // Parse secondary opcode
3409 if ( ((secondary = get_ident_or_literal_constant("secondary opcode")) == NULL) ) {
3410 parse_err(SYNERR, "secondary hex opcode expected at %c\n", _curchar);
3411 return NULL;
3412 }
3413 skipws();
3414 if (_curchar == ',') {
3415 next_char();
3416 skipws();
3417 // Parse tertiary opcode
3418 if ( ((tertiary = get_ident_or_literal_constant("tertiary opcode")) == NULL) ) {
3419 parse_err(SYNERR,"tertiary hex opcode expected at %c\n", _curchar);
3420 return NULL;
3421 }
3422 skipws();
3423 }
3424 }
3425 skipws();
3426 if (_curchar != ')') {
3427 parse_err(SYNERR, "Missing ')' in opcode description\n");
3428 return NULL;
3429 }
3430 }
3431 next_char(); // Skip ')'
3432 skipws();
3433 // Check for terminator
3434 if (_curchar != ';') {
3435 parse_err(SYNERR, "missing ';' in ins_attrib definition\n");
3436 return NULL;
3437 }
3438 next_char(); // Advance past the ';'
3439 skipws(); // necessary for instr_parse()
3441 // Debug Stuff
3442 if (_AD._adl_debug > 1) {
3443 if (primary != NULL) fprintf(stderr,"primary opcode: %s\n", primary);
3444 if (secondary != NULL) fprintf(stderr,"secondary opcode: %s\n", secondary);
3445 if (tertiary != NULL) fprintf(stderr,"tertiary opcode: %s\n", tertiary);
3446 }
3448 // Generate new object and return
3449 opcode = new Opcode(primary, secondary, tertiary);
3450 return opcode;
3451 }
3454 //------------------------------interface_parse--------------------------------
3455 Interface *ADLParser::interface_parse(void) {
3456 char *iface_name = NULL; // Name of interface class being used
3457 char *iface_code = NULL; // Describe components of this class
3459 // Get interface class name
3460 skipws(); // Skip whitespace
3461 if (_curchar != '(') {
3462 parse_err(SYNERR, "Missing '(' at start of interface description.\n");
3463 return NULL;
3464 }
3465 next_char(); // move past '('
3466 skipws();
3467 iface_name = get_ident();
3468 if (iface_name == NULL) {
3469 parse_err(SYNERR, "missing interface name after 'interface'.\n");
3470 return NULL;
3471 }
3472 skipws();
3473 if (_curchar != ')') {
3474 parse_err(SYNERR, "Missing ')' after name of interface.\n");
3475 return NULL;
3476 }
3477 next_char(); // move past ')'
3479 // Get details of the interface,
3480 // for the type of interface indicated by iface_name.
3481 Interface *inter = NULL;
3482 skipws();
3483 if ( _curchar != ';' ) {
3484 if ( strcmp(iface_name,"MEMORY_INTER") == 0 ) {
3485 inter = mem_interface_parse();
3486 }
3487 else if ( strcmp(iface_name,"COND_INTER") == 0 ) {
3488 inter = cond_interface_parse();
3489 }
3490 // The parse routines consume the "%}"
3492 // Check for probable extra ';' after defining block.
3493 if ( _curchar == ';' ) {
3494 parse_err(SYNERR, "Extra ';' after defining interface block.\n");
3495 next_char(); // Skip ';'
3496 return NULL;
3497 }
3498 } else {
3499 next_char(); // move past ';'
3501 // Create appropriate interface object
3502 if ( strcmp(iface_name,"REG_INTER") == 0 ) {
3503 inter = new RegInterface();
3504 }
3505 else if ( strcmp(iface_name,"CONST_INTER") == 0 ) {
3506 inter = new ConstInterface();
3507 }
3508 }
3509 skipws(); // be friendly to oper_parse()
3510 // Debug Stuff
3511 if (_AD._adl_debug > 1) fprintf(stderr,"Interface Form: %s\n", iface_name);
3513 // Create appropriate interface object and return.
3514 return inter;
3515 }
3518 //------------------------------mem_interface_parse----------------------------
3519 Interface *ADLParser::mem_interface_parse(void) {
3520 // Fields for MemInterface
3521 char *base = NULL;
3522 char *index = NULL;
3523 char *scale = NULL;
3524 char *disp = NULL;
3526 if (_curchar != '%') {
3527 parse_err(SYNERR, "Missing '%%{' for 'interface' block.\n");
3528 return NULL;
3529 }
3530 next_char(); // Skip '%'
3531 if (_curchar != '{') {
3532 parse_err(SYNERR, "Missing '%%{' for 'interface' block.\n");
3533 return NULL;
3534 }
3535 next_char(); // Skip '{'
3536 skipws();
3537 do {
3538 char *field = get_ident();
3539 if (field == NULL) {
3540 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%%}' ending interface.\n");
3541 return NULL;
3542 }
3543 if ( strcmp(field,"base") == 0 ) {
3544 base = interface_field_parse();
3545 }
3546 else if ( strcmp(field,"index") == 0 ) {
3547 index = interface_field_parse();
3548 }
3549 else if ( strcmp(field,"scale") == 0 ) {
3550 scale = interface_field_parse();
3551 }
3552 else if ( strcmp(field,"disp") == 0 ) {
3553 disp = interface_field_parse();
3554 }
3555 else {
3556 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%%}' ending interface.\n");
3557 return NULL;
3558 }
3559 } while( _curchar != '%' );
3560 next_char(); // Skip '%'
3561 if ( _curchar != '}' ) {
3562 parse_err(SYNERR, "Missing '%%}' for 'interface' block.\n");
3563 return NULL;
3564 }
3565 next_char(); // Skip '}'
3567 // Construct desired object and return
3568 Interface *inter = new MemInterface(base, index, scale, disp);
3569 return inter;
3570 }
3573 //------------------------------cond_interface_parse---------------------------
3574 Interface *ADLParser::cond_interface_parse(void) {
3575 char *equal;
3576 char *not_equal;
3577 char *less;
3578 char *greater_equal;
3579 char *less_equal;
3580 char *greater;
3581 char *overflow;
3582 char *no_overflow;
3583 const char *equal_format = "eq";
3584 const char *not_equal_format = "ne";
3585 const char *less_format = "lt";
3586 const char *greater_equal_format = "ge";
3587 const char *less_equal_format = "le";
3588 const char *greater_format = "gt";
3589 const char *overflow_format = "o";
3590 const char *no_overflow_format = "no";
3592 if (_curchar != '%') {
3593 parse_err(SYNERR, "Missing '%%{' for 'cond_interface' block.\n");
3594 return NULL;
3595 }
3596 next_char(); // Skip '%'
3597 if (_curchar != '{') {
3598 parse_err(SYNERR, "Missing '%%{' for 'cond_interface' block.\n");
3599 return NULL;
3600 }
3601 next_char(); // Skip '{'
3602 skipws();
3603 do {
3604 char *field = get_ident();
3605 if (field == NULL) {
3606 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%%}' ending interface.\n");
3607 return NULL;
3608 }
3609 if ( strcmp(field,"equal") == 0 ) {
3610 equal = interface_field_parse(&equal_format);
3611 }
3612 else if ( strcmp(field,"not_equal") == 0 ) {
3613 not_equal = interface_field_parse(¬_equal_format);
3614 }
3615 else if ( strcmp(field,"less") == 0 ) {
3616 less = interface_field_parse(&less_format);
3617 }
3618 else if ( strcmp(field,"greater_equal") == 0 ) {
3619 greater_equal = interface_field_parse(&greater_equal_format);
3620 }
3621 else if ( strcmp(field,"less_equal") == 0 ) {
3622 less_equal = interface_field_parse(&less_equal_format);
3623 }
3624 else if ( strcmp(field,"greater") == 0 ) {
3625 greater = interface_field_parse(&greater_format);
3626 }
3627 else if ( strcmp(field,"overflow") == 0 ) {
3628 overflow = interface_field_parse(&overflow_format);
3629 }
3630 else if ( strcmp(field,"no_overflow") == 0 ) {
3631 no_overflow = interface_field_parse(&no_overflow_format);
3632 }
3633 else {
3634 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%%}' ending interface.\n");
3635 return NULL;
3636 }
3637 } while( _curchar != '%' );
3638 next_char(); // Skip '%'
3639 if ( _curchar != '}' ) {
3640 parse_err(SYNERR, "Missing '%%}' for 'interface' block.\n");
3641 return NULL;
3642 }
3643 next_char(); // Skip '}'
3645 // Construct desired object and return
3646 Interface *inter = new CondInterface(equal, equal_format,
3647 not_equal, not_equal_format,
3648 less, less_format,
3649 greater_equal, greater_equal_format,
3650 less_equal, less_equal_format,
3651 greater, greater_format,
3652 overflow, overflow_format,
3653 no_overflow, no_overflow_format);
3654 return inter;
3655 }
3658 //------------------------------interface_field_parse--------------------------
3659 char *ADLParser::interface_field_parse(const char ** format) {
3660 char *iface_field = NULL;
3662 // Get interface field
3663 skipws(); // Skip whitespace
3664 if (_curchar != '(') {
3665 parse_err(SYNERR, "Missing '(' at start of interface field.\n");
3666 return NULL;
3667 }
3668 next_char(); // move past '('
3669 skipws();
3670 if ( _curchar != '0' && _curchar != '$' ) {
3671 parse_err(SYNERR, "missing or invalid interface field contents.\n");
3672 return NULL;
3673 }
3674 iface_field = get_rep_var_ident();
3675 if (iface_field == NULL) {
3676 parse_err(SYNERR, "missing or invalid interface field contents.\n");
3677 return NULL;
3678 }
3679 skipws();
3680 if (format != NULL && _curchar == ',') {
3681 next_char();
3682 skipws();
3683 if (_curchar != '"') {
3684 parse_err(SYNERR, "Missing '\"' in field format .\n");
3685 return NULL;
3686 }
3687 next_char();
3688 char *start = _ptr; // Record start of the next string
3689 while ((_curchar != '"') && (_curchar != '%') && (_curchar != '\n')) {
3690 if (_curchar == '\\') next_char(); // superquote
3691 if (_curchar == '\n') parse_err(SYNERR, "newline in string"); // unimplemented!
3692 next_char();
3693 }
3694 if (_curchar != '"') {
3695 parse_err(SYNERR, "Missing '\"' at end of field format .\n");
3696 return NULL;
3697 }
3698 // If a string was found, terminate it and record in FormatRule
3699 if ( start != _ptr ) {
3700 *_ptr = '\0'; // Terminate the string
3701 *format = start;
3702 }
3703 next_char();
3704 skipws();
3705 }
3706 if (_curchar != ')') {
3707 parse_err(SYNERR, "Missing ')' after interface field.\n");
3708 return NULL;
3709 }
3710 next_char(); // move past ')'
3711 skipws();
3712 if ( _curchar != ';' ) {
3713 parse_err(SYNERR, "Missing ';' at end of interface field.\n");
3714 return NULL;
3715 }
3716 next_char(); // move past ';'
3717 skipws(); // be friendly to interface_parse()
3719 return iface_field;
3720 }
3723 //------------------------------match_parse------------------------------------
3724 MatchRule *ADLParser::match_parse(FormDict &operands) {
3725 MatchRule *match; // Match Rule class for instruction/operand
3726 char *cnstr = NULL; // Code for constructor
3727 int depth = 0; // Counter for matching parentheses
3728 int numleaves = 0; // Counter for number of leaves in rule
3730 // Parse the match rule tree
3731 MatchNode *mnode = matchNode_parse(operands, depth, numleaves, true);
3733 // Either there is a block with a constructor, or a ';' here
3734 skipws(); // Skip whitespace
3735 if ( _curchar == ';' ) { // Semicolon is valid terminator
3736 cnstr = NULL; // no constructor for this form
3737 next_char(); // Move past the ';', replaced with '\0'
3738 }
3739 else if ((cnstr = find_cpp_block("match constructor")) == NULL ) {
3740 parse_err(SYNERR, "invalid construction of match rule\n"
3741 "Missing ';' or invalid '%%{' and '%%}' constructor\n");
3742 return NULL; // No MatchRule to return
3743 }
3744 if (_AD._adl_debug > 1)
3745 if (cnstr) fprintf(stderr,"Match Constructor: %s\n", cnstr);
3746 // Build new MatchRule object
3747 match = new MatchRule(_AD, mnode, depth, cnstr, numleaves);
3748 skipws(); // Skip any trailing whitespace
3749 return match; // Return MatchRule object
3750 }
3752 //------------------------------format_parse-----------------------------------
3753 FormatRule* ADLParser::format_parse(void) {
3754 char *desc = NULL;
3755 FormatRule *format = (new FormatRule(desc));
3757 // Without expression form, MUST have a code block;
3758 skipws(); // Skip whitespace
3759 if ( _curchar == ';' ) { // Semicolon is valid terminator
3760 desc = NULL; // no constructor for this form
3761 next_char(); // Move past the ';', replaced with '\0'
3762 }
3763 else if ( _curchar == '%' && *(_ptr+1) == '{') {
3764 next_char(); // Move past the '%'
3765 next_char(); // Move past the '{'
3767 skipws();
3768 if (_curchar == '$') {
3769 char* ident = get_rep_var_ident();
3770 if (strcmp(ident, "$$template") == 0) return template_parse();
3771 parse_err(SYNERR, "Unknown \"%s\" directive in format", ident);
3772 return NULL;
3773 }
3774 // Check for the opening '"' inside the format description
3775 if ( _curchar == '"' ) {
3776 next_char(); // Move past the initial '"'
3777 if( _curchar == '"' ) { // Handle empty format string case
3778 *_ptr = '\0'; // Terminate empty string
3779 format->_strings.addName(_ptr);
3780 }
3782 // Collect the parts of the format description
3783 // (1) strings that are passed through to tty->print
3784 // (2) replacement/substitution variable, preceeded by a '$'
3785 // (3) multi-token ANSIY C style strings
3786 while ( true ) {
3787 if ( _curchar == '%' || _curchar == '\n' ) {
3788 if ( _curchar != '"' ) {
3789 parse_err(SYNERR, "missing '\"' at end of format block");
3790 return NULL;
3791 }
3792 }
3794 // (1)
3795 // Check if there is a string to pass through to output
3796 char *start = _ptr; // Record start of the next string
3797 while ((_curchar != '$') && (_curchar != '"') && (_curchar != '%') && (_curchar != '\n')) {
3798 if (_curchar == '\\') {
3799 next_char(); // superquote
3800 if ((_curchar == '$') || (_curchar == '%'))
3801 // hack to avoid % escapes and warnings about undefined \ escapes
3802 *(_ptr-1) = _curchar;
3803 }
3804 if (_curchar == '\n') parse_err(SYNERR, "newline in string"); // unimplemented!
3805 next_char();
3806 }
3807 // If a string was found, terminate it and record in FormatRule
3808 if ( start != _ptr ) {
3809 *_ptr = '\0'; // Terminate the string
3810 format->_strings.addName(start);
3811 }
3813 // (2)
3814 // If we are at a replacement variable,
3815 // copy it and record in FormatRule
3816 if ( _curchar == '$' ) {
3817 next_char(); // Move past the '$'
3818 char* rep_var = get_ident(); // Nil terminate the variable name
3819 rep_var = strdup(rep_var);// Copy the string
3820 *_ptr = _curchar; // and replace Nil with original character
3821 format->_rep_vars.addName(rep_var);
3822 // Add flag to _strings list indicating we should check _rep_vars
3823 format->_strings.addName(NameList::_signal);
3824 }
3826 // (3)
3827 // Allow very long strings to be broken up,
3828 // using the ANSI C syntax "foo\n" <newline> "bar"
3829 if ( _curchar == '"') {
3830 next_char(); // Move past the '"'
3831 skipws(); // Skip white space before next string token
3832 if ( _curchar != '"') {
3833 break;
3834 } else {
3835 // Found one. Skip both " and the whitespace in between.
3836 next_char();
3837 }
3838 }
3839 } // end while part of format description
3841 // Check for closing '"' and '%}' in format description
3842 skipws(); // Move to closing '%}'
3843 if ( _curchar != '%' ) {
3844 parse_err(SYNERR, "non-blank characters between closing '\"' and '%%' in format");
3845 return NULL;
3846 }
3847 } // Done with format description inside
3849 skipws();
3850 // Past format description, at '%'
3851 if ( _curchar != '%' || *(_ptr+1) != '}' ) {
3852 parse_err(SYNERR, "missing '%%}' at end of format block");
3853 return NULL;
3854 }
3855 next_char(); // Move past the '%'
3856 next_char(); // Move past the '}'
3857 }
3858 else { // parameter list alone must terminate with a ';'
3859 parse_err(SYNERR, "missing ';' after Format expression");
3860 return NULL;
3861 }
3862 // Debug Stuff
3863 if (_AD._adl_debug > 1) fprintf(stderr,"Format Rule: %s\n", desc);
3865 skipws();
3866 return format;
3867 }
3870 //------------------------------template_parse-----------------------------------
3871 FormatRule* ADLParser::template_parse(void) {
3872 char *desc = NULL;
3873 FormatRule *format = (new FormatRule(desc));
3875 skipws();
3876 while ( (_curchar != '%') && (*(_ptr+1) != '}') ) {
3878 // (1)
3879 // Check if there is a string to pass through to output
3880 {
3881 char *start = _ptr; // Record start of the next string
3882 while ((_curchar != '$') && ((_curchar != '%') || (*(_ptr+1) != '}')) ) {
3883 // If at the start of a comment, skip past it
3884 if( (_curchar == '/') && ((*(_ptr+1) == '/') || (*(_ptr+1) == '*')) ) {
3885 skipws_no_preproc();
3886 } else {
3887 // ELSE advance to the next character, or start of the next line
3888 next_char_or_line();
3889 }
3890 }
3891 // If a string was found, terminate it and record in EncClass
3892 if ( start != _ptr ) {
3893 *_ptr = '\0'; // Terminate the string
3894 // Add flag to _strings list indicating we should check _rep_vars
3895 format->_strings.addName(NameList::_signal2);
3896 format->_strings.addName(start);
3897 }
3898 }
3900 // (2)
3901 // If we are at a replacement variable,
3902 // copy it and record in EncClass
3903 if ( _curchar == '$' ) {
3904 // Found replacement Variable
3905 char *rep_var = get_rep_var_ident_dup();
3906 if (strcmp(rep_var, "$emit") == 0) {
3907 // switch to normal format parsing
3908 next_char();
3909 next_char();
3910 skipws();
3911 // Check for the opening '"' inside the format description
3912 if ( _curchar == '"' ) {
3913 next_char(); // Move past the initial '"'
3914 if( _curchar == '"' ) { // Handle empty format string case
3915 *_ptr = '\0'; // Terminate empty string
3916 format->_strings.addName(_ptr);
3917 }
3919 // Collect the parts of the format description
3920 // (1) strings that are passed through to tty->print
3921 // (2) replacement/substitution variable, preceeded by a '$'
3922 // (3) multi-token ANSIY C style strings
3923 while ( true ) {
3924 if ( _curchar == '%' || _curchar == '\n' ) {
3925 parse_err(SYNERR, "missing '\"' at end of format block");
3926 return NULL;
3927 }
3929 // (1)
3930 // Check if there is a string to pass through to output
3931 char *start = _ptr; // Record start of the next string
3932 while ((_curchar != '$') && (_curchar != '"') && (_curchar != '%') && (_curchar != '\n')) {
3933 if (_curchar == '\\') next_char(); // superquote
3934 if (_curchar == '\n') parse_err(SYNERR, "newline in string"); // unimplemented!
3935 next_char();
3936 }
3937 // If a string was found, terminate it and record in FormatRule
3938 if ( start != _ptr ) {
3939 *_ptr = '\0'; // Terminate the string
3940 format->_strings.addName(start);
3941 }
3943 // (2)
3944 // If we are at a replacement variable,
3945 // copy it and record in FormatRule
3946 if ( _curchar == '$' ) {
3947 next_char(); // Move past the '$'
3948 char* next_rep_var = get_ident(); // Nil terminate the variable name
3949 next_rep_var = strdup(next_rep_var);// Copy the string
3950 *_ptr = _curchar; // and replace Nil with original character
3951 format->_rep_vars.addName(next_rep_var);
3952 // Add flag to _strings list indicating we should check _rep_vars
3953 format->_strings.addName(NameList::_signal);
3954 }
3956 // (3)
3957 // Allow very long strings to be broken up,
3958 // using the ANSI C syntax "foo\n" <newline> "bar"
3959 if ( _curchar == '"') {
3960 next_char(); // Move past the '"'
3961 skipws(); // Skip white space before next string token
3962 if ( _curchar != '"') {
3963 break;
3964 } else {
3965 // Found one. Skip both " and the whitespace in between.
3966 next_char();
3967 }
3968 }
3969 } // end while part of format description
3970 }
3971 } else {
3972 // Add flag to _strings list indicating we should check _rep_vars
3973 format->_rep_vars.addName(rep_var);
3974 // Add flag to _strings list indicating we should check _rep_vars
3975 format->_strings.addName(NameList::_signal3);
3976 }
3977 } // end while part of format description
3978 }
3980 skipws();
3981 // Past format description, at '%'
3982 if ( _curchar != '%' || *(_ptr+1) != '}' ) {
3983 parse_err(SYNERR, "missing '%%}' at end of format block");
3984 return NULL;
3985 }
3986 next_char(); // Move past the '%'
3987 next_char(); // Move past the '}'
3989 // Debug Stuff
3990 if (_AD._adl_debug > 1) fprintf(stderr,"Format Rule: %s\n", desc);
3992 skipws();
3993 return format;
3994 }
3997 //------------------------------effect_parse-----------------------------------
3998 void ADLParser::effect_parse(InstructForm *instr) {
3999 char* desc = NULL;
4001 skipws(); // Skip whitespace
4002 if (_curchar != '(') {
4003 parse_err(SYNERR, "missing '(' in effect definition\n");
4004 return;
4005 }
4006 // Get list of effect-operand pairs and insert into dictionary
4007 else get_effectlist(instr->_effects, instr->_localNames, instr->_has_call);
4009 // Debug Stuff
4010 if (_AD._adl_debug > 1) fprintf(stderr,"Effect description: %s\n", desc);
4011 if (_curchar != ';') {
4012 parse_err(SYNERR, "missing ';' in Effect definition\n");
4013 }
4014 next_char(); // Skip ';'
4016 }
4018 //------------------------------expand_parse-----------------------------------
4019 ExpandRule* ADLParser::expand_parse(InstructForm *instr) {
4020 char *ident, *ident2;
4021 NameAndList *instr_and_operands = NULL;
4022 ExpandRule *exp = new ExpandRule();
4024 // Expand is a block containing an ordered list of operands with initializers,
4025 // or instructions, each of which has an ordered list of operands.
4026 // Check for block delimiter
4027 skipws(); // Skip leading whitespace
4028 if ((_curchar != '%')
4029 || (next_char(), (_curchar != '{')) ) { // If not open block
4030 parse_err(SYNERR, "missing '%%{' in expand definition\n");
4031 return(NULL);
4032 }
4033 next_char(); // Maintain the invariant
4034 do {
4035 ident = get_ident(); // Grab next identifier
4036 if (ident == NULL) {
4037 parse_err(SYNERR, "identifier expected at %c\n", _curchar);
4038 continue;
4039 }
4041 // Check whether we should parse an instruction or operand.
4042 const Form *form = _globalNames[ident];
4043 bool parse_oper = false;
4044 bool parse_ins = false;
4045 if (form == NULL) {
4046 skipws();
4047 // Check whether this looks like an instruction specification. If so,
4048 // just parse the instruction. The declaration of the instruction is
4049 // not needed here.
4050 if (_curchar == '(') parse_ins = true;
4051 } else if (form->is_instruction()) {
4052 parse_ins = true;
4053 } else if (form->is_operand()) {
4054 parse_oper = true;
4055 } else {
4056 parse_err(SYNERR, "instruction/operand name expected at %s\n", ident);
4057 continue;
4058 }
4060 if (parse_oper) {
4061 // This is a new operand
4062 OperandForm *oper = form->is_operand();
4063 if (oper == NULL) {
4064 parse_err(SYNERR, "instruction/operand name expected at %s\n", ident);
4065 continue;
4066 }
4067 // Throw the operand on the _newopers list
4068 skipws();
4069 ident = get_unique_ident(instr->_localNames,"Operand");
4070 if (ident == NULL) {
4071 parse_err(SYNERR, "identifier expected at %c\n", _curchar);
4072 continue;
4073 }
4074 exp->_newopers.addName(ident);
4075 // Add new operand to LocalNames
4076 instr->_localNames.Insert(ident, oper);
4077 // Grab any constructor code and save as a string
4078 char *c = NULL;
4079 skipws();
4080 if (_curchar == '%') { // Need a constructor for the operand
4081 c = find_cpp_block("Operand Constructor");
4082 if (c == NULL) {
4083 parse_err(SYNERR, "Invalid code block for operand constructor\n", _curchar);
4084 continue;
4085 }
4086 // Add constructor to _newopconst Dict
4087 exp->_newopconst.Insert(ident, c);
4088 }
4089 else if (_curchar != ';') { // If no constructor, need a ;
4090 parse_err(SYNERR, "Missing ; in expand rule operand declaration\n");
4091 continue;
4092 }
4093 else next_char(); // Skip the ;
4094 skipws();
4095 }
4096 else {
4097 assert(parse_ins, "sanity");
4098 // Add instruction to list
4099 instr_and_operands = new NameAndList(ident);
4100 // Grab operands, build nameList of them, and then put into dictionary
4101 skipws();
4102 if (_curchar != '(') { // Check for parenthesized operand list
4103 parse_err(SYNERR, "missing '(' in expand instruction declaration\n");
4104 continue;
4105 }
4106 do {
4107 next_char(); // skip open paren & comma characters
4108 skipws();
4109 if (_curchar == ')') break;
4110 ident2 = get_ident();
4111 skipws();
4112 if (ident2 == NULL) {
4113 parse_err(SYNERR, "identifier expected at %c\n", _curchar);
4114 continue;
4115 } // Check that you have a valid operand
4116 const Form *form2 = instr->_localNames[ident2];
4117 if (!form2) {
4118 parse_err(SYNERR, "operand name expected at %s\n", ident2);
4119 continue;
4120 }
4121 OperandForm *oper = form2->is_operand();
4122 if (oper == NULL && !form2->is_opclass()) {
4123 parse_err(SYNERR, "operand name expected at %s\n", ident2);
4124 continue;
4125 } // Add operand to list
4126 instr_and_operands->add_entry(ident2);
4127 } while(_curchar == ',');
4128 if (_curchar != ')') {
4129 parse_err(SYNERR, "missing ')'in expand instruction declaration\n");
4130 continue;
4131 }
4132 next_char();
4133 if (_curchar != ';') {
4134 parse_err(SYNERR, "missing ';'in expand instruction declaration\n");
4135 continue;
4136 }
4137 next_char();
4139 // Record both instruction name and its operand list
4140 exp->add_instruction(instr_and_operands);
4142 skipws();
4143 }
4145 } while(_curchar != '%');
4146 next_char();
4147 if (_curchar != '}') {
4148 parse_err(SYNERR, "missing '%%}' in expand rule definition\n");
4149 return(NULL);
4150 }
4151 next_char();
4153 // Debug Stuff
4154 if (_AD._adl_debug > 1) fprintf(stderr,"Expand Rule:\n");
4156 skipws();
4157 return (exp);
4158 }
4160 //------------------------------rewrite_parse----------------------------------
4161 RewriteRule* ADLParser::rewrite_parse(void) {
4162 char* params = NULL;
4163 char* desc = NULL;
4166 // This feature targeted for second generation description language.
4168 skipws(); // Skip whitespace
4169 // Get parameters for rewrite
4170 if ((params = get_paren_expr("rewrite parameters")) == NULL) {
4171 parse_err(SYNERR, "missing '(' in rewrite rule\n");
4172 return NULL;
4173 }
4174 // Debug Stuff
4175 if (_AD._adl_debug > 1) fprintf(stderr,"Rewrite parameters: %s\n", params);
4177 // For now, grab entire block;
4178 skipws();
4179 if ( (desc = find_cpp_block("rewrite block")) == NULL ) {
4180 parse_err(SYNERR, "incorrect or missing block for 'rewrite'.\n");
4181 return NULL;
4182 }
4183 // Debug Stuff
4184 if (_AD._adl_debug > 1) fprintf(stderr,"Rewrite Rule: %s\n", desc);
4186 skipws();
4187 return (new RewriteRule(params,desc));
4188 }
4190 //------------------------------attr_parse-------------------------------------
4191 Attribute *ADLParser::attr_parse(char* ident) {
4192 Attribute *attrib; // Attribute class
4193 char *cost = NULL; // String representation of cost attribute
4195 skipws(); // Skip leading whitespace
4196 if ( (cost = get_paren_expr("attribute")) == NULL ) {
4197 parse_err(SYNERR, "incorrect or missing expression for 'attribute'\n");
4198 return NULL;
4199 }
4200 // Debug Stuff
4201 if (_AD._adl_debug > 1) fprintf(stderr,"Attribute: %s\n", cost);
4202 if (_curchar != ';') {
4203 parse_err(SYNERR, "missing ';' in attribute definition\n");
4204 return NULL;
4205 }
4206 next_char(); // Point after the terminator
4208 skipws();
4209 attrib = new Attribute(ident,cost,INS_ATTR); // Build new predicate object
4210 return attrib;
4211 }
4214 //------------------------------matchNode_parse--------------------------------
4215 MatchNode *ADLParser::matchNode_parse(FormDict &operands, int &depth, int &numleaves, bool atroot) {
4216 // Count depth of parenthesis nesting for both left and right children
4217 int lParens = depth;
4218 int rParens = depth;
4220 // MatchNode objects for left, right, and root of subtree.
4221 MatchNode *lChild = NULL;
4222 MatchNode *rChild = NULL;
4223 char *token; // Identifier which may be opcode or operand
4225 // Match expression starts with a '('
4226 if (cur_char() != '(')
4227 return NULL;
4229 next_char(); // advance past '('
4231 // Parse the opcode
4232 token = get_ident(); // Get identifier, opcode
4233 if (token == NULL) {
4234 parse_err(SYNERR, "missing opcode in match expression\n");
4235 return NULL;
4236 }
4238 // Take note if we see one of a few special operations - those that are
4239 // treated differently on different architectures in the sense that on
4240 // one architecture there is a match rule and on another there isn't (so
4241 // a call will eventually be generated).
4243 for (int i = _last_machine_leaf + 1; i < _last_opcode; i++) {
4244 if (strcmp(token, NodeClassNames[i]) == 0) {
4245 _AD.has_match_rule(i, true);
4246 }
4247 }
4249 // Lookup the root value in the operands dict to perform substitution
4250 const char *result = NULL; // Result type will be filled in later
4251 const char *name = token; // local name associated with this node
4252 const char *operation = token; // remember valid operation for later
4253 const Form *form = operands[token];
4254 OpClassForm *opcForm = form ? form->is_opclass() : NULL;
4255 if (opcForm != NULL) {
4256 // If this token is an entry in the local names table, record its type
4257 if (!opcForm->ideal_only()) {
4258 operation = opcForm->_ident;
4259 result = operation; // Operands result in their own type
4260 }
4261 // Otherwise it is an ideal type, and so, has no local name
4262 else name = NULL;
4263 }
4265 // Parse the operands
4266 skipws();
4267 if (cur_char() != ')') {
4269 // Parse the left child
4270 if (strcmp(operation,"Set"))
4271 lChild = matchChild_parse(operands, lParens, numleaves, false);
4272 else
4273 lChild = matchChild_parse(operands, lParens, numleaves, true);
4275 skipws();
4276 if (cur_char() != ')' ) {
4277 if(strcmp(operation, "Set"))
4278 rChild = matchChild_parse(operands,rParens,numleaves,false);
4279 else
4280 rChild = matchChild_parse(operands,rParens,numleaves,true);
4281 }
4282 }
4284 // Check for required ')'
4285 skipws();
4286 if (cur_char() != ')') {
4287 parse_err(SYNERR, "missing ')' in match expression\n");
4288 return NULL;
4289 }
4290 next_char(); // skip the ')'
4292 MatchNode* mroot = new MatchNode(_AD,result,name,operation,lChild,rChild);
4294 // If not the root, reduce this subtree to an internal operand
4295 if (!atroot) {
4296 mroot->build_internalop();
4297 }
4298 // depth is greater of left and right paths.
4299 depth = (lParens > rParens) ? lParens : rParens;
4301 return mroot;
4302 }
4305 //------------------------------matchChild_parse-------------------------------
4306 MatchNode *ADLParser::matchChild_parse(FormDict &operands, int &parens, int &numleaves, bool atroot) {
4307 MatchNode *child = NULL;
4308 const char *result = NULL;
4309 const char *token = NULL;
4310 const char *opType = NULL;
4312 if (cur_char() == '(') { // child is an operation
4313 ++parens;
4314 child = matchNode_parse(operands, parens, numleaves, atroot);
4315 }
4316 else { // child is an operand
4317 token = get_ident();
4318 const Form *form = operands[token];
4319 OpClassForm *opcForm = form ? form->is_opclass() : NULL;
4320 if (opcForm != NULL) {
4321 opType = opcForm->_ident;
4322 result = opcForm->_ident; // an operand's result matches its type
4323 } else {
4324 parse_err(SYNERR, "undefined operand %s in match rule\n", token);
4325 return NULL;
4326 }
4328 if (opType == NULL) {
4329 parse_err(SYNERR, "missing type for argument '%s'\n", token);
4330 }
4332 child = new MatchNode(_AD, result, token, opType);
4333 ++numleaves;
4334 }
4336 return child;
4337 }
4341 // ******************** Private Utility Functions *************************
4344 char* ADLParser::find_cpp_block(const char* description) {
4345 char *next; // Pointer for finding block delimiters
4346 char* cppBlock = NULL; // Beginning of C++ code block
4348 if (_curchar == '%') { // Encoding is a C++ expression
4349 next_char();
4350 if (_curchar != '{') {
4351 parse_err(SYNERR, "missing '{' in %s \n", description);
4352 return NULL;
4353 }
4354 next_char(); // Skip block delimiter
4355 skipws_no_preproc(); // Skip leading whitespace
4356 cppBlock = _ptr; // Point to start of expression
4357 int line = linenum();
4358 next = _ptr + 1;
4359 while(((_curchar != '%') || (*next != '}')) && (_curchar != '\0')) {
4360 next_char_or_line();
4361 next = _ptr+1; // Maintain the next pointer
4362 } // Grab string
4363 if (_curchar == '\0') {
4364 parse_err(SYNERR, "invalid termination of %s \n", description);
4365 return NULL;
4366 }
4367 *_ptr = '\0'; // Terminate string
4368 _ptr += 2; // Skip block delimiter
4369 _curchar = *_ptr; // Maintain invariant
4371 // Prepend location descriptor, for debugging.
4372 if (_AD._adlocation_debug) {
4373 char* location = get_line_string(line);
4374 char* end_loc = end_line_marker();
4375 char* result = (char *)malloc(strlen(location) + strlen(cppBlock) + strlen(end_loc) + 1);
4376 strcpy(result, location);
4377 strcat(result, cppBlock);
4378 strcat(result, end_loc);
4379 cppBlock = result;
4380 free(location);
4381 }
4382 }
4384 return cppBlock;
4385 }
4387 // Move to the closing token of the expression we are currently at,
4388 // as defined by stop_chars. Match parens and quotes.
4389 char* ADLParser::get_expr(const char *desc, const char *stop_chars) {
4390 char* expr = NULL;
4391 int paren = 0;
4393 expr = _ptr;
4394 while (paren > 0 || !strchr(stop_chars, _curchar)) {
4395 if (_curchar == '(') { // Down level of nesting
4396 paren++; // Bump the parenthesis counter
4397 next_char(); // maintain the invariant
4398 }
4399 else if (_curchar == ')') { // Up one level of nesting
4400 if (paren == 0) {
4401 // Paren underflow: We didn't encounter the required stop-char.
4402 parse_err(SYNERR, "too many )'s, did not find %s after %s\n",
4403 stop_chars, desc);
4404 return NULL;
4405 }
4406 paren--; // Drop the parenthesis counter
4407 next_char(); // Maintain the invariant
4408 }
4409 else if (_curchar == '"' || _curchar == '\'') {
4410 int qchar = _curchar;
4411 while (true) {
4412 next_char();
4413 if (_curchar == qchar) { next_char(); break; }
4414 if (_curchar == '\\') next_char(); // superquote
4415 if (_curchar == '\n' || _curchar == '\0') {
4416 parse_err(SYNERR, "newline in string in %s\n", desc);
4417 return NULL;
4418 }
4419 }
4420 }
4421 else if (_curchar == '%' && (_ptr[1] == '{' || _ptr[1] == '}')) {
4422 // Make sure we do not stray into the next ADLC-level form.
4423 parse_err(SYNERR, "unexpected %%%c in %s\n", _ptr[1], desc);
4424 return NULL;
4425 }
4426 else if (_curchar == '\0') {
4427 parse_err(SYNERR, "unexpected EOF in %s\n", desc);
4428 return NULL;
4429 }
4430 else {
4431 // Always walk over whitespace, comments, preprocessor directives, etc.
4432 char* pre_skip_ptr = _ptr;
4433 skipws();
4434 // If the parser declined to make progress on whitespace,
4435 // skip the next character, which is therefore NOT whitespace.
4436 if (pre_skip_ptr == _ptr) {
4437 next_char();
4438 } else if (pre_skip_ptr+strlen(pre_skip_ptr) != _ptr+strlen(_ptr)) {
4439 parse_err(SYNERR, "unimplemented: preprocessor must not elide subexpression in %s", desc);
4440 }
4441 }
4442 }
4444 assert(strchr(stop_chars, _curchar), "non-null return must be at stop-char");
4445 *_ptr = '\0'; // Replace ')' or other stop-char with '\0'
4446 return expr;
4447 }
4449 // Helper function around get_expr
4450 // Sets _curchar to '(' so that get_paren_expr will search for a matching ')'
4451 char *ADLParser::get_paren_expr(const char *description, bool include_location) {
4452 int line = linenum();
4453 if (_curchar != '(') // Escape if not valid starting position
4454 return NULL;
4455 next_char(); // Skip the required initial paren.
4456 char *token2 = get_expr(description, ")");
4457 if (_curchar == ')')
4458 next_char(); // Skip required final paren.
4459 int junk = 0;
4460 if (include_location && _AD._adlocation_debug && !is_int_token(token2, junk)) {
4461 // Prepend location descriptor, for debugging.
4462 char* location = get_line_string(line);
4463 char* end_loc = end_line_marker();
4464 char* result = (char *)malloc(strlen(location) + strlen(token2) + strlen(end_loc) + 1);
4465 strcpy(result, location);
4466 strcat(result, token2);
4467 strcat(result, end_loc);
4468 token2 = result;
4469 free(location);
4470 }
4471 return token2;
4472 }
4474 //------------------------------get_ident_common-------------------------------
4475 // Looks for an identifier in the buffer, and turns it into a null terminated
4476 // string(still inside the file buffer). Returns a pointer to the string or
4477 // NULL if some other token is found instead.
4478 char *ADLParser::get_ident_common(bool do_preproc) {
4479 register char c;
4480 char *start; // Pointer to start of token
4481 char *end; // Pointer to end of token
4483 if( _curline == NULL ) // Return NULL at EOF.
4484 return NULL;
4486 skipws_common(do_preproc); // Skip whitespace before identifier
4487 start = end = _ptr; // Start points at first character
4488 end--; // unwind end by one to prepare for loop
4489 do {
4490 end++; // Increment end pointer
4491 c = *end; // Grab character to test
4492 } while ( ((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z'))
4493 || ((c >= '0') && (c <= '9'))
4494 || ((c == '_')) || ((c == ':')) || ((c == '#')) );
4495 if (start == end) { // We popped out on the first try
4496 // It can occur that `start' contains the rest of the input file.
4497 // In this case the output should be truncated.
4498 if (strlen(start) > 24) {
4499 char buf[32];
4500 strncpy(buf, start, 20);
4501 buf[20] = '\0';
4502 strcat(buf, "[...]");
4503 parse_err(SYNERR, "Identifier expected, but found '%s'.", buf);
4504 } else {
4505 parse_err(SYNERR, "Identifier expected, but found '%s'.", start);
4506 }
4507 start = NULL;
4508 }
4509 else {
4510 _curchar = c; // Save the first character of next token
4511 *end = '\0'; // NULL terminate the string in place
4512 }
4513 _ptr = end; // Reset _ptr to point to next char after token
4515 // Make sure we do not try to use #defined identifiers. If start is
4516 // NULL an error was already reported.
4517 if (do_preproc && start != NULL) {
4518 const char* def = _AD.get_preproc_def(start);
4519 if (def != NULL && strcmp(def, start)) {
4520 const char* def1 = def;
4521 const char* def2 = _AD.get_preproc_def(def1);
4522 // implement up to 2 levels of #define
4523 if (def2 != NULL && strcmp(def2, def1)) {
4524 def = def2;
4525 const char* def3 = _AD.get_preproc_def(def2);
4526 if (def3 != NULL && strcmp(def3, def2) && strcmp(def3, def1)) {
4527 parse_err(SYNERR, "unimplemented: using %s defined as %s => %s => %s",
4528 start, def1, def2, def3);
4529 }
4530 }
4531 start = strdup(def);
4532 }
4533 }
4535 return start; // Pointer to token in filebuf
4536 }
4538 //------------------------------get_ident_dup----------------------------------
4539 // Looks for an identifier in the buffer, and returns a duplicate
4540 // or NULL if some other token is found instead.
4541 char *ADLParser::get_ident_dup(void) {
4542 char *ident = get_ident();
4544 // Duplicate an identifier before returning and restore string.
4545 if( ident != NULL ) {
4546 ident = strdup(ident); // Copy the string
4547 *_ptr = _curchar; // and replace Nil with original character
4548 }
4550 return ident;
4551 }
4553 //----------------------get_ident_or_literal_constant--------------------------
4554 // Looks for an identifier in the buffer, or a parenthesized expression.
4555 char *ADLParser::get_ident_or_literal_constant(const char* description) {
4556 char* param = NULL;
4557 skipws();
4558 if (_curchar == '(') {
4559 // Grab a constant expression.
4560 param = get_paren_expr(description);
4561 if (param[0] != '(') {
4562 char* buf = (char*) malloc(strlen(param) + 3);
4563 sprintf(buf, "(%s)", param);
4564 param = buf;
4565 }
4566 assert(is_literal_constant(param),
4567 "expr must be recognizable as a constant");
4568 } else {
4569 param = get_ident();
4570 }
4571 return param;
4572 }
4574 //------------------------------get_rep_var_ident-----------------------------
4575 // Do NOT duplicate,
4576 // Leave nil terminator in buffer
4577 // Preserve initial '$'(s) in string
4578 char *ADLParser::get_rep_var_ident(void) {
4579 // Remember starting point
4580 char *rep_var = _ptr;
4582 // Check for replacement variable indicator '$' and pass if present
4583 if ( _curchar == '$' ) {
4584 next_char();
4585 }
4586 // Check for a subfield indicator, a second '$', and pass if present
4587 if ( _curchar == '$' ) {
4588 next_char();
4589 }
4591 // Check for a control indicator, a third '$':
4592 if ( _curchar == '$' ) {
4593 next_char();
4594 }
4596 // Check for more than three '$'s in sequence, SYNERR
4597 if( _curchar == '$' ) {
4598 parse_err(SYNERR, "Replacement variables and field specifiers can not start with '$$$$'");
4599 next_char();
4600 return NULL;
4601 }
4603 // Nil terminate the variable name following the '$'
4604 char *rep_var_name = get_ident();
4605 assert( rep_var_name != NULL,
4606 "Missing identifier after replacement variable indicator '$'");
4608 return rep_var;
4609 }
4613 //------------------------------get_rep_var_ident_dup-------------------------
4614 // Return the next replacement variable identifier, skipping first '$'
4615 // given a pointer into a line of the buffer.
4616 // Null terminates string, still inside the file buffer,
4617 // Returns a pointer to a copy of the string, or NULL on failure
4618 char *ADLParser::get_rep_var_ident_dup(void) {
4619 if( _curchar != '$' ) return NULL;
4621 next_char(); // Move past the '$'
4622 char *rep_var = _ptr; // Remember starting point
4624 // Check for a subfield indicator, a second '$':
4625 if ( _curchar == '$' ) {
4626 next_char();
4627 }
4629 // Check for a control indicator, a third '$':
4630 if ( _curchar == '$' ) {
4631 next_char();
4632 }
4634 // Check for more than three '$'s in sequence, SYNERR
4635 if( _curchar == '$' ) {
4636 parse_err(SYNERR, "Replacement variables and field specifiers can not start with '$$$$'");
4637 next_char();
4638 return NULL;
4639 }
4641 // Nil terminate the variable name following the '$'
4642 char *rep_var_name = get_ident();
4643 assert( rep_var_name != NULL,
4644 "Missing identifier after replacement variable indicator '$'");
4645 rep_var = strdup(rep_var); // Copy the string
4646 *_ptr = _curchar; // and replace Nil with original character
4648 return rep_var;
4649 }
4652 //------------------------------get_unique_ident------------------------------
4653 // Looks for an identifier in the buffer, terminates it with a NULL,
4654 // and checks that it is unique
4655 char *ADLParser::get_unique_ident(FormDict& dict, const char* nameDescription){
4656 char* ident = get_ident();
4658 if (ident == NULL) {
4659 parse_err(SYNERR, "missing %s identifier at %c\n", nameDescription, _curchar);
4660 }
4661 else {
4662 if (dict[ident] != NULL) {
4663 parse_err(SYNERR, "duplicate name %s for %s\n", ident, nameDescription);
4664 ident = NULL;
4665 }
4666 }
4668 return ident;
4669 }
4672 //------------------------------get_int----------------------------------------
4673 // Looks for a character string integer in the buffer, and turns it into an int
4674 // invokes a parse_err if the next token is not an integer.
4675 // This routine does not leave the integer null-terminated.
4676 int ADLParser::get_int(void) {
4677 register char c;
4678 char *start; // Pointer to start of token
4679 char *end; // Pointer to end of token
4680 int result; // Storage for integer result
4682 if( _curline == NULL ) // Return NULL at EOF.
4683 return 0;
4685 skipws(); // Skip whitespace before identifier
4686 start = end = _ptr; // Start points at first character
4687 c = *end; // Grab character to test
4688 while ((c >= '0') && (c <= '9')
4689 || ((c == '-') && (end == start))) {
4690 end++; // Increment end pointer
4691 c = *end; // Grab character to test
4692 }
4693 if (start == end) { // We popped out on the first try
4694 parse_err(SYNERR, "integer expected at %c\n", c);
4695 result = 0;
4696 }
4697 else {
4698 _curchar = c; // Save the first character of next token
4699 *end = '\0'; // NULL terminate the string in place
4700 result = atoi(start); // Convert the string to an integer
4701 *end = _curchar; // Restore buffer to original condition
4702 }
4704 // Reset _ptr to next char after token
4705 _ptr = end;
4707 return result; // integer
4708 }
4711 //------------------------------get_relation_dup------------------------------
4712 // Looks for a relational operator in the buffer
4713 // invokes a parse_err if the next token is not a relation
4714 // This routine creates a duplicate of the string in the buffer.
4715 char *ADLParser::get_relation_dup(void) {
4716 char *result = NULL; // relational operator being returned
4718 if( _curline == NULL ) // Return NULL at EOF.
4719 return NULL;
4721 skipws(); // Skip whitespace before relation
4722 char *start = _ptr; // Store start of relational operator
4723 char first = *_ptr; // the first character
4724 if( (first == '=') || (first == '!') || (first == '<') || (first == '>') ) {
4725 next_char();
4726 char second = *_ptr; // the second character
4727 if( (second == '=') ) {
4728 next_char();
4729 char tmp = *_ptr;
4730 *_ptr = '\0'; // NULL terminate
4731 result = strdup(start); // Duplicate the string
4732 *_ptr = tmp; // restore buffer
4733 } else {
4734 parse_err(SYNERR, "relational operator expected at %s\n", _ptr);
4735 }
4736 } else {
4737 parse_err(SYNERR, "relational operator expected at %s\n", _ptr);
4738 }
4740 return result;
4741 }
4745 //------------------------------get_oplist-------------------------------------
4746 // Looks for identifier pairs where first must be the name of an operand, and
4747 // second must be a name unique in the scope of this instruction. Stores the
4748 // names with a pointer to the OpClassForm of their type in a local name table.
4749 void ADLParser::get_oplist(NameList ¶meters, FormDict &operands) {
4750 OpClassForm *opclass = NULL;
4751 char *ident = NULL;
4753 do {
4754 next_char(); // skip open paren & comma characters
4755 skipws();
4756 if (_curchar == ')') break;
4758 // Get operand type, and check it against global name table
4759 ident = get_ident();
4760 if (ident == NULL) {
4761 parse_err(SYNERR, "optype identifier expected at %c\n", _curchar);
4762 return;
4763 }
4764 else {
4765 const Form *form = _globalNames[ident];
4766 if( form == NULL ) {
4767 parse_err(SYNERR, "undefined operand type %s\n", ident);
4768 return;
4769 }
4771 // Check for valid operand type
4772 OpClassForm *opc = form->is_opclass();
4773 OperandForm *oper = form->is_operand();
4774 if((oper == NULL) && (opc == NULL)) {
4775 parse_err(SYNERR, "identifier %s not operand type\n", ident);
4776 return;
4777 }
4778 opclass = opc;
4779 }
4780 // Debugging Stuff
4781 if (_AD._adl_debug > 1) fprintf(stderr, "\tOperand Type: %s\t", ident);
4783 // Get name of operand and add it to local name table
4784 if( (ident = get_unique_ident(operands, "operand")) == NULL) {
4785 return;
4786 }
4787 // Parameter names must not be global names.
4788 if( _globalNames[ident] != NULL ) {
4789 parse_err(SYNERR, "Reuse of global name %s as operand.\n",ident);
4790 return;
4791 }
4792 operands.Insert(ident, opclass);
4793 parameters.addName(ident);
4795 // Debugging Stuff
4796 if (_AD._adl_debug > 1) fprintf(stderr, "\tOperand Name: %s\n", ident);
4797 skipws();
4798 } while(_curchar == ',');
4800 if (_curchar != ')') parse_err(SYNERR, "missing ')'\n");
4801 else {
4802 next_char(); // set current character position past the close paren
4803 }
4804 }
4807 //------------------------------get_effectlist---------------------------------
4808 // Looks for identifier pairs where first must be the name of a pre-defined,
4809 // effect, and the second must be the name of an operand defined in the
4810 // operand list of this instruction. Stores the names with a pointer to the
4811 // effect form in a local effects table.
4812 void ADLParser::get_effectlist(FormDict &effects, FormDict &operands, bool& has_call) {
4813 OperandForm *opForm;
4814 Effect *eForm;
4815 char *ident;
4817 do {
4818 next_char(); // skip open paren & comma characters
4819 skipws();
4820 if (_curchar == ')') break;
4822 // Get effect type, and check it against global name table
4823 ident = get_ident();
4824 if (ident == NULL) {
4825 parse_err(SYNERR, "effect type identifier expected at %c\n", _curchar);
4826 return;
4827 }
4828 else {
4829 // Check for valid effect type
4830 const Form *form = _globalNames[ident];
4831 if( form == NULL ) {
4832 parse_err(SYNERR, "undefined effect type %s\n", ident);
4833 return;
4834 }
4835 else {
4836 if( (eForm = form->is_effect()) == NULL) {
4837 parse_err(SYNERR, "identifier %s not effect type\n", ident);
4838 return;
4839 }
4840 }
4841 }
4842 // Debugging Stuff
4843 if (_AD._adl_debug > 1) fprintf(stderr, "\tEffect Type: %s\t", ident);
4844 skipws();
4845 if (eForm->is(Component::CALL)) {
4846 if (_AD._adl_debug > 1) fprintf(stderr, "\n");
4847 has_call = true;
4848 } else {
4849 // Get name of operand and check that it is in the local name table
4850 if( (ident = get_unique_ident(effects, "effect")) == NULL) {
4851 parse_err(SYNERR, "missing operand identifier in effect list\n");
4852 return;
4853 }
4854 const Form *form = operands[ident];
4855 opForm = form ? form->is_operand() : NULL;
4856 if( opForm == NULL ) {
4857 if( form && form->is_opclass() ) {
4858 const char* cname = form->is_opclass()->_ident;
4859 parse_err(SYNERR, "operand classes are illegal in effect lists (found %s %s)\n", cname, ident);
4860 } else {
4861 parse_err(SYNERR, "undefined operand %s in effect list\n", ident);
4862 }
4863 return;
4864 }
4865 // Add the pair to the effects table
4866 effects.Insert(ident, eForm);
4867 // Debugging Stuff
4868 if (_AD._adl_debug > 1) fprintf(stderr, "\tOperand Name: %s\n", ident);
4869 }
4870 skipws();
4871 } while(_curchar == ',');
4873 if (_curchar != ')') parse_err(SYNERR, "missing ')'\n");
4874 else {
4875 next_char(); // set current character position past the close paren
4876 }
4877 }
4880 //-------------------------------preproc_line----------------------------------
4881 // A "#line" keyword has been seen, so parse the rest of the line.
4882 void ADLParser::preproc_line(void) {
4883 int line = get_int();
4884 skipws_no_preproc();
4885 const char* file = NULL;
4886 if (_curchar == '"') {
4887 next_char(); // Move past the initial '"'
4888 file = _ptr;
4889 while (true) {
4890 if (_curchar == '\n') {
4891 parse_err(SYNERR, "missing '\"' at end of #line directive");
4892 return;
4893 }
4894 if (_curchar == '"') {
4895 *_ptr = '\0'; // Terminate the string
4896 next_char();
4897 skipws_no_preproc();
4898 break;
4899 }
4900 next_char();
4901 }
4902 }
4903 ensure_end_of_line();
4904 if (file != NULL)
4905 _AD._ADL_file._name = file;
4906 _buf.set_linenum(line);
4907 }
4909 //------------------------------preproc_define---------------------------------
4910 // A "#define" keyword has been seen, so parse the rest of the line.
4911 void ADLParser::preproc_define(void) {
4912 char* flag = get_ident_no_preproc();
4913 skipws_no_preproc();
4914 // only #define x y is supported for now
4915 char* def = get_ident_no_preproc();
4916 _AD.set_preproc_def(flag, def);
4917 skipws_no_preproc();
4918 if (_curchar != '\n') {
4919 parse_err(SYNERR, "non-identifier in preprocessor definition\n");
4920 }
4921 }
4923 //------------------------------preproc_undef----------------------------------
4924 // An "#undef" keyword has been seen, so parse the rest of the line.
4925 void ADLParser::preproc_undef(void) {
4926 char* flag = get_ident_no_preproc();
4927 skipws_no_preproc();
4928 ensure_end_of_line();
4929 _AD.set_preproc_def(flag, NULL);
4930 }
4934 //------------------------------parse_err--------------------------------------
4935 // Issue a parser error message, and skip to the end of the current line
4936 void ADLParser::parse_err(int flag, const char *fmt, ...) {
4937 va_list args;
4939 va_start(args, fmt);
4940 if (flag == 1)
4941 _AD._syntax_errs += _AD.emit_msg(0, flag, linenum(), fmt, args);
4942 else if (flag == 2)
4943 _AD._semantic_errs += _AD.emit_msg(0, flag, linenum(), fmt, args);
4944 else
4945 _AD._warnings += _AD.emit_msg(0, flag, linenum(), fmt, args);
4947 int error_char = _curchar;
4948 char* error_ptr = _ptr+1;
4949 for(;*_ptr != '\n'; _ptr++) ; // Skip to the end of the current line
4950 _curchar = '\n';
4951 va_end(args);
4952 _AD._no_output = 1;
4954 if (flag == 1) {
4955 char* error_tail = strchr(error_ptr, '\n');
4956 char tem = *error_ptr;
4957 error_ptr[-1] = '\0';
4958 char* error_head = error_ptr-1;
4959 while (error_head > _curline && *error_head) --error_head;
4960 if (error_tail) *error_tail = '\0';
4961 fprintf(stderr, "Error Context: %s>>>%c<<<%s\n",
4962 error_head, error_char, error_ptr);
4963 if (error_tail) *error_tail = '\n';
4964 error_ptr[-1] = tem;
4965 }
4966 }
4968 //---------------------------ensure_start_of_line------------------------------
4969 // A preprocessor directive has been encountered. Be sure it has fallen at
4970 // the beginning of a line, or else report an error.
4971 void ADLParser::ensure_start_of_line(void) {
4972 if (_curchar == '\n') { next_line(); return; }
4973 assert( _ptr >= _curline && _ptr < _curline+strlen(_curline),
4974 "Must be able to find which line we are in" );
4976 for (char *s = _curline; s < _ptr; s++) {
4977 if (*s > ' ') {
4978 parse_err(SYNERR, "'%c' must be at beginning of line\n", _curchar);
4979 break;
4980 }
4981 }
4982 }
4984 //---------------------------ensure_end_of_line--------------------------------
4985 // A preprocessor directive has been parsed. Be sure there is no trailing
4986 // garbage at the end of this line. Set the scan point to the beginning of
4987 // the next line.
4988 void ADLParser::ensure_end_of_line(void) {
4989 skipws_no_preproc();
4990 if (_curchar != '\n' && _curchar != '\0') {
4991 parse_err(SYNERR, "garbage char '%c' at end of line\n", _curchar);
4992 } else {
4993 next_char_or_line();
4994 }
4995 }
4997 //---------------------------handle_preproc------------------------------------
4998 // The '#' character introducing a preprocessor directive has been found.
4999 // Parse the whole directive name (e.g., #define, #endif) and take appropriate
5000 // action. If we are in an "untaken" span of text, simply keep track of
5001 // #ifdef nesting structure, so we can find out when to start taking text
5002 // again. (In this state, we "sort of support" C's #if directives, enough
5003 // to disregard their associated #else and #endif lines.) If we are in a
5004 // "taken" span of text, there are two cases: "#define" and "#undef"
5005 // directives are preserved and passed up to the caller, which eventually
5006 // passes control to the top-level parser loop, which handles #define and
5007 // #undef directly. (This prevents these directives from occurring in
5008 // arbitrary positions in the AD file--we require better structure than C.)
5009 // In the other case, and #ifdef, #ifndef, #else, or #endif is silently
5010 // processed as whitespace, with the "taken" state of the text correctly
5011 // updated. This routine returns "false" exactly in the case of a "taken"
5012 // #define or #undef, which tells the caller that a preprocessor token
5013 // has appeared which must be handled explicitly by the parse loop.
5014 bool ADLParser::handle_preproc_token() {
5015 assert(*_ptr == '#', "must be at start of preproc");
5016 ensure_start_of_line();
5017 next_char();
5018 skipws_no_preproc();
5019 char* start_ident = _ptr;
5020 char* ident = (_curchar == '\n') ? NULL : get_ident_no_preproc();
5021 if (ident == NULL) {
5022 parse_err(SYNERR, "expected preprocessor command, got end of line\n");
5023 } else if (!strcmp(ident, "ifdef") ||
5024 !strcmp(ident, "ifndef")) {
5025 char* flag = get_ident_no_preproc();
5026 ensure_end_of_line();
5027 // Test the identifier only if we are already in taken code:
5028 bool flag_def = preproc_taken() && (_AD.get_preproc_def(flag) != NULL);
5029 bool now_taken = !strcmp(ident, "ifdef") ? flag_def : !flag_def;
5030 begin_if_def(now_taken);
5031 } else if (!strcmp(ident, "if")) {
5032 if (preproc_taken())
5033 parse_err(SYNERR, "unimplemented: #%s %s", ident, _ptr+1);
5034 next_line();
5035 // Intelligently skip this nested C preprocessor directive:
5036 begin_if_def(true);
5037 } else if (!strcmp(ident, "else")) {
5038 ensure_end_of_line();
5039 invert_if_def();
5040 } else if (!strcmp(ident, "endif")) {
5041 ensure_end_of_line();
5042 end_if_def();
5043 } else if (preproc_taken()) {
5044 // pass this token up to the main parser as "#define" or "#undef"
5045 _ptr = start_ident;
5046 _curchar = *--_ptr;
5047 if( _curchar != '#' ) {
5048 parse_err(SYNERR, "no space allowed after # in #define or #undef");
5049 assert(_curchar == '#', "no space allowed after # in #define or #undef");
5050 }
5051 return false;
5052 }
5053 return true;
5054 }
5056 //---------------------------skipws_common-------------------------------------
5057 // Skip whitespace, including comments and newlines, while keeping an accurate
5058 // line count.
5059 // Maybe handle certain preprocessor constructs: #ifdef, #ifndef, #else, #endif
5060 void ADLParser::skipws_common(bool do_preproc) {
5061 char *start = _ptr;
5062 char *next = _ptr + 1;
5064 if (*_ptr == '\0') {
5065 // Check for string terminator
5066 if (_curchar > ' ') return;
5067 if (_curchar == '\n') {
5068 if (!do_preproc) return; // let caller handle the newline
5069 next_line();
5070 _ptr = _curline; next = _ptr + 1;
5071 }
5072 else if (_curchar == '#' ||
5073 (_curchar == '/' && (*next == '/' || *next == '*'))) {
5074 parse_err(SYNERR, "unimplemented: comment token in a funny place");
5075 }
5076 }
5077 while(_curline != NULL) { // Check for end of file
5078 if (*_ptr == '\n') { // keep proper track of new lines
5079 if (!do_preproc) break; // let caller handle the newline
5080 next_line();
5081 _ptr = _curline; next = _ptr + 1;
5082 }
5083 else if ((*_ptr == '/') && (*next == '/')) // C++ comment
5084 do { _ptr++; next++; } while(*_ptr != '\n'); // So go to end of line
5085 else if ((*_ptr == '/') && (*next == '*')) { // C comment
5086 _ptr++; next++;
5087 do {
5088 _ptr++; next++;
5089 if (*_ptr == '\n') { // keep proper track of new lines
5090 next_line(); // skip newlines within comments
5091 if (_curline == NULL) { // check for end of file
5092 parse_err(SYNERR, "end-of-file detected inside comment\n");
5093 break;
5094 }
5095 _ptr = _curline; next = _ptr + 1;
5096 }
5097 } while(!((*_ptr == '*') && (*next == '/'))); // Go to end of comment
5098 _ptr = ++next; next++; // increment _ptr past comment end
5099 }
5100 else if (do_preproc && *_ptr == '#') {
5101 // Note that this calls skipws_common(false) recursively!
5102 bool preproc_handled = handle_preproc_token();
5103 if (!preproc_handled) {
5104 if (preproc_taken()) {
5105 return; // short circuit
5106 }
5107 ++_ptr; // skip the preprocessor character
5108 }
5109 next = _ptr+1;
5110 } else if(*_ptr > ' ' && !(do_preproc && !preproc_taken())) {
5111 break;
5112 }
5113 else if (*_ptr == '"' || *_ptr == '\'') {
5114 assert(do_preproc, "only skip strings if doing preproc");
5115 // skip untaken quoted string
5116 int qchar = *_ptr;
5117 while (true) {
5118 ++_ptr;
5119 if (*_ptr == qchar) { ++_ptr; break; }
5120 if (*_ptr == '\\') ++_ptr;
5121 if (*_ptr == '\n' || *_ptr == '\0') {
5122 parse_err(SYNERR, "newline in string");
5123 break;
5124 }
5125 }
5126 next = _ptr + 1;
5127 }
5128 else { ++_ptr; ++next; }
5129 }
5130 if( _curline != NULL ) // at end of file _curchar isn't valid
5131 _curchar = *_ptr; // reset _curchar to maintain invariant
5132 }
5134 //---------------------------cur_char-----------------------------------------
5135 char ADLParser::cur_char() {
5136 return (_curchar);
5137 }
5139 //---------------------------next_char-----------------------------------------
5140 void ADLParser::next_char() {
5141 if (_curchar == '\n') parse_err(WARN, "must call next_line!");
5142 _curchar = *++_ptr;
5143 // if ( _curchar == '\n' ) {
5144 // next_line();
5145 // }
5146 }
5148 //---------------------------next_char_or_line---------------------------------
5149 void ADLParser::next_char_or_line() {
5150 if ( _curchar != '\n' ) {
5151 _curchar = *++_ptr;
5152 } else {
5153 next_line();
5154 _ptr = _curline;
5155 _curchar = *_ptr; // maintain invariant
5156 }
5157 }
5159 //---------------------------next_line-----------------------------------------
5160 void ADLParser::next_line() {
5161 _curline = _buf.get_line();
5162 _curchar = ' ';
5163 }
5165 //------------------------get_line_string--------------------------------------
5166 // Prepended location descriptor, for debugging.
5167 // Must return a malloced string (that can be freed if desired).
5168 char* ADLParser::get_line_string(int linenum) {
5169 const char* file = _AD._ADL_file._name;
5170 int line = linenum ? linenum : this->linenum();
5171 char* location = (char *)malloc(strlen(file) + 100);
5172 sprintf(location, "\n#line %d \"%s\"\n", line, file);
5173 return location;
5174 }
5176 //-------------------------is_literal_constant---------------------------------
5177 bool ADLParser::is_literal_constant(const char *param) {
5178 if (param[0] == 0) return false; // null string
5179 if (param[0] == '(') return true; // parenthesized expression
5180 if (param[0] == '0' && (param[1] == 'x' || param[1] == 'X')) {
5181 // Make sure it's a hex constant.
5182 int i = 2;
5183 do {
5184 if( !ADLParser::is_hex_digit(*(param+i)) ) return false;
5185 ++i;
5186 } while( *(param+i) != 0 );
5187 return true;
5188 }
5189 return false;
5190 }
5192 //---------------------------is_hex_digit--------------------------------------
5193 bool ADLParser::is_hex_digit(char digit) {
5194 return ((digit >= '0') && (digit <= '9'))
5195 ||((digit >= 'a') && (digit <= 'f'))
5196 ||((digit >= 'A') && (digit <= 'F'));
5197 }
5199 //---------------------------is_int_token--------------------------------------
5200 bool ADLParser::is_int_token(const char* token, int& intval) {
5201 const char* cp = token;
5202 while (*cp != '\0' && *cp <= ' ') cp++;
5203 if (*cp == '-') cp++;
5204 int ndigit = 0;
5205 while (*cp >= '0' && *cp <= '9') { cp++; ndigit++; }
5206 while (*cp != '\0' && *cp <= ' ') cp++;
5207 if (ndigit == 0 || *cp != '\0') {
5208 return false;
5209 }
5210 intval = atoi(token);
5211 return true;
5212 }
5214 static const char* skip_expr_ws(const char* str) {
5215 const char * cp = str;
5216 while (cp[0]) {
5217 if (cp[0] <= ' ') {
5218 ++cp;
5219 } else if (cp[0] == '#') {
5220 ++cp;
5221 while (cp[0] == ' ') ++cp;
5222 assert(0 == strncmp(cp, "line", 4), "must be a #line directive");
5223 const char* eol = strchr(cp, '\n');
5224 assert(eol != NULL, "must find end of line");
5225 if (eol == NULL) eol = cp + strlen(cp);
5226 cp = eol;
5227 } else {
5228 break;
5229 }
5230 }
5231 return cp;
5232 }
5234 //-----------------------equivalent_expressions--------------------------------
5235 bool ADLParser::equivalent_expressions(const char* str1, const char* str2) {
5236 if (str1 == str2)
5237 return true;
5238 else if (str1 == NULL || str2 == NULL)
5239 return false;
5240 const char* cp1 = str1;
5241 const char* cp2 = str2;
5242 char in_quote = '\0';
5243 while (cp1[0] && cp2[0]) {
5244 if (!in_quote) {
5245 // skip spaces and/or cpp directives
5246 const char* cp1a = skip_expr_ws(cp1);
5247 const char* cp2a = skip_expr_ws(cp2);
5248 if (cp1a > cp1 && cp2a > cp2) {
5249 cp1 = cp1a; cp2 = cp2a;
5250 continue;
5251 }
5252 if (cp1a > cp1 || cp2a > cp2) break; // fail
5253 }
5254 // match one non-space char
5255 if (cp1[0] != cp2[0]) break; // fail
5256 char ch = cp1[0];
5257 cp1++; cp2++;
5258 // watch for quotes
5259 if (in_quote && ch == '\\') {
5260 if (cp1[0] != cp2[0]) break; // fail
5261 if (!cp1[0]) break;
5262 cp1++; cp2++;
5263 }
5264 if (in_quote && ch == in_quote) {
5265 in_quote = '\0';
5266 } else if (!in_quote && (ch == '"' || ch == '\'')) {
5267 in_quote = ch;
5268 }
5269 }
5270 return (!cp1[0] && !cp2[0]);
5271 }
5274 //-------------------------------trim------------------------------------------
5275 void ADLParser::trim(char* &token) {
5276 while (*token <= ' ') token++;
5277 char* end = token + strlen(token);
5278 while (end > token && *(end-1) <= ' ') --end;
5279 *end = '\0';
5280 }
