1 /* 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 // ADLPARSE.CPP - Architecture Description Language Parser 26 // Authors: Chris Vick and Mike Paleczny 27 #include "adlc.hpp" 28 29 //----------------------------ADLParser---------------------------------------- 30 // Create a new ADL parser 31 ADLParser::ADLParser(FileBuff& buffer, ArchDesc& archDesc) 32 : _buf(buffer), _AD(archDesc), 33 _globalNames(archDesc.globalNames()) { 34 _AD._syntax_errs = _AD._semantic_errs = 0; // No errors so far this file 35 _AD._warnings = 0; // No warnings either 36 _curline = _ptr = NULL; // No pointers into buffer yet 37 38 _preproc_depth = 0; 39 _preproc_not_taken = 0; 40 41 // Delimit command-line definitions from in-file definitions: 42 _AD._preproc_list.add_signal(); 43 } 44 45 //------------------------------~ADLParser------------------------------------- 46 // Delete an ADL parser. 47 ADLParser::~ADLParser() { 48 if (!_AD._quiet_mode) 49 fprintf(stderr,"---------------------------- Errors and Warnings ----------------------------\n"); 50 #ifndef ASSERT 51 fprintf(stderr, "**************************************************************\n"); 52 fprintf(stderr, "***** WARNING: ASSERT is undefined, assertions disabled. *****\n"); 53 fprintf(stderr, "**************************************************************\n"); 54 #endif 55 if( _AD._syntax_errs + _AD._semantic_errs + _AD._warnings == 0 ) { 56 if (!_AD._quiet_mode) 57 fprintf(stderr,"No errors or warnings to report from phase-1 parse.\n" ); 58 } 59 else { 60 if( _AD._syntax_errs ) { // Any syntax errors? 61 fprintf(stderr,"%s: Found %d syntax error", _buf._fp->_name, _AD._syntax_errs); 62 if( _AD._syntax_errs > 1 ) fprintf(stderr,"s.\n\n"); 63 else fprintf(stderr,".\n\n"); 64 } 65 if( _AD._semantic_errs ) { // Any semantic errors? 66 fprintf(stderr,"%s: Found %d semantic error", _buf._fp->_name, _AD._semantic_errs); 67 if( _AD._semantic_errs > 1 ) fprintf(stderr,"s.\n\n"); 68 else fprintf(stderr,".\n\n"); 69 } 70 if( _AD._warnings ) { // Any warnings? 71 fprintf(stderr,"%s: Found %d warning", _buf._fp->_name, _AD._warnings); 72 if( _AD._warnings > 1 ) fprintf(stderr,"s.\n\n"); 73 else fprintf(stderr,".\n\n"); 74 } 75 } 76 if (!_AD._quiet_mode) 77 fprintf(stderr,"-----------------------------------------------------------------------------\n"); 78 _AD._TotalLines += linenum()-1; // -1 for overshoot in "nextline" routine 79 80 // Write out information we have stored 81 // // UNIXism == fsync(stderr); 82 } 83 84 //------------------------------parse------------------------------------------ 85 // Each top-level keyword should appear as the first non-whitespace on a line. 86 // 87 void ADLParser::parse() { 88 char *ident; 89 90 // Iterate over the lines in the file buffer parsing Level 1 objects 91 for( next_line(); _curline != NULL; next_line()) { 92 _ptr = _curline; // Reset ptr to start of new line 93 skipws(); // Skip any leading whitespace 94 ident = get_ident(); // Get first token 95 if (ident == NULL) { // Empty line 96 continue; // Get the next line 97 } 98 if (!strcmp(ident, "instruct")) instr_parse(); 99 else if (!strcmp(ident, "operand")) oper_parse(); 100 else if (!strcmp(ident, "opclass")) opclass_parse(); 101 else if (!strcmp(ident, "ins_attrib")) ins_attr_parse(); 102 else if (!strcmp(ident, "op_attrib")) op_attr_parse(); 103 else if (!strcmp(ident, "source")) source_parse(); 104 else if (!strcmp(ident, "source_hpp")) source_hpp_parse(); 105 else if (!strcmp(ident, "register")) reg_parse(); 106 else if (!strcmp(ident, "frame")) frame_parse(); 107 else if (!strcmp(ident, "encode")) encode_parse(); 108 else if (!strcmp(ident, "pipeline")) pipe_parse(); 109 else if (!strcmp(ident, "definitions")) definitions_parse(); 110 else if (!strcmp(ident, "peephole")) peep_parse(); 111 else if (!strcmp(ident, "#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 } 118 119 // Done with parsing, check consistency. 120 121 if (_preproc_depth != 0) { 122 parse_err(SYNERR, "End of file inside #ifdef"); 123 } 124 125 // AttributeForms ins_cost and op_cost must be defined for default behaviour 126 if (_globalNames[AttributeForm::_ins_cost] == NULL) { 127 parse_err(SEMERR, "Did not declare 'ins_cost' attribute"); 128 } 129 if (_globalNames[AttributeForm::_ins_pc_relative] == NULL) { 130 parse_err(SEMERR, "Did not declare 'ins_pc_relative' attribute"); 131 } 132 if (_globalNames[AttributeForm::_op_cost] == NULL) { 133 parse_err(SEMERR, "Did not declare 'op_cost' attribute"); 134 } 135 } 136 137 // ******************** Private Level 1 Parse Functions ******************** 138 //------------------------------instr_parse------------------------------------ 139 // Parse the contents of an instruction definition, build the InstructForm to 140 // represent that instruction, and add it to the InstructForm list. 141 void ADLParser::instr_parse(void) { 142 char *ident; 143 InstructForm *instr; 144 MatchRule *rule; 145 int match_rules_cnt = 0; 146 147 // First get the name of the instruction 148 if( (ident = get_unique_ident(_globalNames,"instruction")) == NULL ) 149 return; 150 instr = new InstructForm(ident); // Create new instruction form 151 instr->_linenum = linenum(); 152 _globalNames.Insert(ident, instr); // Add name to the name table 153 // Debugging Stuff 154 if (_AD._adl_debug > 1) 155 fprintf(stderr,"Parsing Instruction Form %s\n", ident); 156 157 // Then get the operands 158 skipws(); 159 if (_curchar != '(') { 160 parse_err(SYNERR, "missing '(' in instruct definition\n"); 161 } 162 // Parse the operand list 163 else get_oplist(instr->_parameters, instr->_localNames); 164 skipws(); // Skip leading whitespace 165 // Check for block delimiter 166 if ( (_curchar != '%') 167 || ( next_char(), (_curchar != '{')) ) { 168 parse_err(SYNERR, "missing '%{' in instruction definition\n"); 169 return; 170 } 171 next_char(); // Maintain the invariant 172 do { 173 ident = get_ident(); // Grab next identifier 174 if (ident == NULL) { 175 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar); 176 continue; 177 } 178 if (!strcmp(ident, "predicate")) instr->_predicate = pred_parse(); 179 else if (!strcmp(ident, "match")) { 180 // Allow one instruction have several match rules. 181 rule = instr->_matrule; 182 if (rule == NULL) { 183 // This is first match rule encountered 184 rule = match_parse(instr->_localNames); 185 if (rule) { 186 instr->_matrule = rule; 187 // Special case the treatment of Control instructions. 188 if( instr->is_ideal_control() ) { 189 // Control instructions return a special result, 'Universe' 190 rule->_result = "Universe"; 191 } 192 // Check for commutative operations with tree operands. 193 matchrule_clone_and_swap(rule, instr->_ident, match_rules_cnt); 194 } 195 } else { 196 // Find the end of the match rule list 197 while (rule->_next != NULL) 198 rule = rule->_next; 199 // Add the new match rule to the list 200 rule->_next = match_parse(instr->_localNames); 201 if (rule->_next) { 202 rule = rule->_next; 203 if( instr->is_ideal_control() ) { 204 parse_err(SYNERR, "unique match rule expected for %s\n", rule->_name); 205 return; 206 } 207 assert(match_rules_cnt < 100," too many match rule clones"); 208 char* buf = (char*) malloc(strlen(instr->_ident) + 4); 209 sprintf(buf, "%s_%d", instr->_ident, match_rules_cnt++); 210 rule->_result = buf; 211 // Check for commutative operations with tree operands. 212 matchrule_clone_and_swap(rule, instr->_ident, match_rules_cnt); 213 } 214 } 215 } 216 else if (!strcmp(ident, "encode")) { 217 parse_err(SYNERR, "Instructions specify ins_encode, not encode\n"); 218 } 219 else if (!strcmp(ident, "ins_encode")) 220 instr->_insencode = ins_encode_parse(*instr); 221 else if (!strcmp(ident, "opcode")) instr->_opcode = opcode_parse(instr); 222 else if (!strcmp(ident, "size")) instr->_size = size_parse(instr); 223 else if (!strcmp(ident, "effect")) effect_parse(instr); 224 else if (!strcmp(ident, "expand")) instr->_exprule = expand_parse(instr); 225 else if (!strcmp(ident, "rewrite")) instr->_rewrule = rewrite_parse(); 226 else if (!strcmp(ident, "constraint")) { 227 parse_err(SYNERR, "Instructions do not specify a constraint\n"); 228 } 229 else if (!strcmp(ident, "construct")) { 230 parse_err(SYNERR, "Instructions do not specify a construct\n"); 231 } 232 else if (!strcmp(ident, "format")) instr->_format = format_parse(); 233 else if (!strcmp(ident, "interface")) { 234 parse_err(SYNERR, "Instructions do not specify an interface\n"); 235 } 236 else if (!strcmp(ident, "ins_pipe")) ins_pipe_parse(*instr); 237 else { // Done with staticly defined parts of instruction definition 238 // Check identifier to see if it is the name of an attribute 239 const Form *form = _globalNames[ident]; 240 AttributeForm *attr = form ? form->is_attribute() : NULL; 241 if( attr && (attr->_atype == INS_ATTR) ) { 242 // Insert the new attribute into the linked list. 243 Attribute *temp = attr_parse(ident); 244 temp->_next = instr->_attribs; 245 instr->_attribs = temp; 246 } else { 247 parse_err(SYNERR, "expected one of:\n predicate, match, encode, or the name of an instruction attribute at %s\n", ident); 248 } 249 } 250 skipws(); 251 } while(_curchar != '%'); 252 next_char(); 253 if (_curchar != '}') { 254 parse_err(SYNERR, "missing '%}' in instruction definition\n"); 255 return; 256 } 257 // Check for "Set" form of chain rule 258 adjust_set_rule(instr); 259 if (_AD._pipeline ) { 260 if( instr->expands() ) { 261 if( instr->_ins_pipe ) 262 parse_err(WARN, "ins_pipe and expand rule both specified for instruction \"%s\"; ins_pipe will be unused\n", instr->_ident); 263 } else { 264 if( !instr->_ins_pipe ) 265 parse_err(WARN, "No ins_pipe specified for instruction \"%s\"\n", instr->_ident); 266 } 267 } 268 // Add instruction to tail of instruction list 269 _AD.addForm(instr); 270 271 // Create instruction form for each additional match rule 272 rule = instr->_matrule; 273 if (rule != NULL) { 274 rule = rule->_next; 275 while (rule != NULL) { 276 ident = (char*)rule->_result; 277 InstructForm *clone = new InstructForm(ident, instr, rule); // Create new instruction form 278 _globalNames.Insert(ident, clone); // Add name to the name table 279 // Debugging Stuff 280 if (_AD._adl_debug > 1) 281 fprintf(stderr,"Parsing Instruction Form %s\n", ident); 282 // Check for "Set" form of chain rule 283 adjust_set_rule(clone); 284 // Add instruction to tail of instruction list 285 _AD.addForm(clone); 286 rule = rule->_next; 287 clone->_matrule->_next = NULL; // One match rule per clone 288 } 289 } 290 } 291 292 //------------------------------matchrule_clone_and_swap----------------------- 293 // Check for commutative operations with subtree operands, 294 // create clones and swap operands. 295 void ADLParser::matchrule_clone_and_swap(MatchRule* rule, const char* instr_ident, int& match_rules_cnt) { 296 // Check for commutative operations with tree operands. 297 int count = 0; 298 rule->count_commutative_op(count); 299 if (count > 0) { 300 // Clone match rule and swap commutative operation's operands. 301 rule->matchrule_swap_commutative_op(instr_ident, count, match_rules_cnt); 302 } 303 } 304 305 //------------------------------adjust_set_rule-------------------------------- 306 // Check for "Set" form of chain rule 307 void ADLParser::adjust_set_rule(InstructForm *instr) { 308 if (instr->_matrule == NULL || instr->_matrule->_rChild == NULL) return; 309 const char *rch = instr->_matrule->_rChild->_opType; 310 const Form *frm = _globalNames[rch]; 311 if( (! strcmp(instr->_matrule->_opType,"Set")) && 312 frm && frm->is_operand() && (! frm->ideal_only()) ) { 313 // Previous implementation, which missed leaP*, but worked for loadCon* 314 unsigned position = 0; 315 const char *result = NULL; 316 const char *name = NULL; 317 const char *optype = NULL; 318 MatchNode *right = instr->_matrule->_rChild; 319 if (right->base_operand(position, _globalNames, result, name, optype)) { 320 position = 1; 321 const char *result2 = NULL; 322 const char *name2 = NULL; 323 const char *optype2 = NULL; 324 // Can not have additional base operands in right side of match! 325 if ( ! right->base_operand( position, _globalNames, result2, name2, optype2) ) { 326 assert( instr->_predicate == NULL, "ADLC does not support instruction chain rules with predicates"); 327 // Chain from input _ideal_operand_type_, 328 // Needed for shared roots of match-trees 329 ChainList *lst = (ChainList *)_AD._chainRules[optype]; 330 if (lst == NULL) { 331 lst = new ChainList(); 332 _AD._chainRules.Insert(optype, lst); 333 } 334 if (!lst->search(instr->_matrule->_lChild->_opType)) { 335 const char *cost = instr->cost(); 336 if (cost == NULL) { 337 cost = ((AttributeForm*)_globalNames[AttributeForm::_ins_cost])->_attrdef; 338 } 339 // The ADLC does not support chaining from the ideal operand type 340 // of a predicated user-defined operand 341 if( frm->is_operand() == NULL || frm->is_operand()->_predicate == NULL ) { 342 lst->insert(instr->_matrule->_lChild->_opType,cost,instr->_ident); 343 } 344 } 345 // Chain from input _user_defined_operand_type_, 346 lst = (ChainList *)_AD._chainRules[result]; 347 if (lst == NULL) { 348 lst = new ChainList(); 349 _AD._chainRules.Insert(result, lst); 350 } 351 if (!lst->search(instr->_matrule->_lChild->_opType)) { 352 const char *cost = instr->cost(); 353 if (cost == NULL) { 354 cost = ((AttributeForm*)_globalNames[AttributeForm::_ins_cost])->_attrdef; 355 } 356 // It is safe to chain from the top-level user-defined operand even 357 // if it has a predicate, since the predicate is checked before 358 // the user-defined type is available. 359 lst->insert(instr->_matrule->_lChild->_opType,cost,instr->_ident); 360 } 361 } else { 362 // May have instruction chain rule if root of right-tree is an ideal 363 OperandForm *rightOp = _globalNames[right->_opType]->is_operand(); 364 if( rightOp ) { 365 const Form *rightRoot = _globalNames[rightOp->_matrule->_opType]; 366 if( rightRoot && rightRoot->ideal_only() ) { 367 const char *chain_op = NULL; 368 if( rightRoot->is_instruction() ) 369 chain_op = rightOp->_ident; 370 if( chain_op ) { 371 // Look-up the operation in chain rule table 372 ChainList *lst = (ChainList *)_AD._chainRules[chain_op]; 373 if (lst == NULL) { 374 lst = new ChainList(); 375 _AD._chainRules.Insert(chain_op, lst); 376 } 377 // if (!lst->search(instr->_matrule->_lChild->_opType)) { 378 const char *cost = instr->cost(); 379 if (cost == NULL) { 380 cost = ((AttributeForm*)_globalNames[AttributeForm::_ins_cost])->_attrdef; 381 } 382 // This chains from a top-level operand whose predicate, if any, 383 // has been checked. 384 lst->insert(instr->_matrule->_lChild->_opType,cost,instr->_ident); 385 // } 386 } 387 } 388 } 389 } // end chain rule from right-tree's ideal root 390 } 391 } 392 } 393 394 395 //------------------------------oper_parse------------------------------------- 396 void ADLParser::oper_parse(void) { 397 char *ident; 398 OperandForm *oper; 399 AttributeForm *attr; 400 MatchRule *rule; 401 402 // First get the name of the operand 403 skipws(); 404 if( (ident = get_unique_ident(_globalNames,"operand")) == NULL ) 405 return; 406 oper = new OperandForm(ident); // Create new operand form 407 oper->_linenum = linenum(); 408 _globalNames.Insert(ident, oper); // Add name to the name table 409 410 // Debugging Stuff 411 if (_AD._adl_debug > 1) fprintf(stderr,"Parsing Operand Form %s\n", ident); 412 413 // Get the component operands 414 skipws(); 415 if (_curchar != '(') { 416 parse_err(SYNERR, "missing '(' in operand definition\n"); 417 return; 418 } 419 else get_oplist(oper->_parameters, oper->_localNames); // Parse the component operand list 420 skipws(); 421 // Check for block delimiter 422 if ((_curchar != '%') || (*(_ptr+1) != '{')) { // If not open block 423 parse_err(SYNERR, "missing '%c{' in operand definition\n","%"); 424 return; 425 } 426 next_char(); next_char(); // Skip over "%{" symbol 427 do { 428 ident = get_ident(); // Grab next identifier 429 if (ident == NULL) { 430 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar); 431 continue; 432 } 433 if (!strcmp(ident, "predicate")) oper->_predicate = pred_parse(); 434 else if (!strcmp(ident, "match")) { 435 // Find the end of the match rule list 436 rule = oper->_matrule; 437 if (rule) { 438 while (rule->_next) rule = rule->_next; 439 // Add the new match rule to the list 440 rule->_next = match_parse(oper->_localNames); 441 if (rule->_next) { 442 rule->_next->_result = oper->_ident; 443 } 444 } 445 else { 446 // This is first match rule encountered 447 oper->_matrule = match_parse(oper->_localNames); 448 if (oper->_matrule) { 449 oper->_matrule->_result = oper->_ident; 450 } 451 } 452 } 453 else if (!strcmp(ident, "encode")) oper->_interface = interface_parse(); 454 else if (!strcmp(ident, "ins_encode")) { 455 parse_err(SYNERR, "Operands specify 'encode', not 'ins_encode'\n"); 456 } 457 else if (!strcmp(ident, "opcode")) { 458 parse_err(SYNERR, "Operands do not specify an opcode\n"); 459 } 460 else if (!strcmp(ident, "effect")) { 461 parse_err(SYNERR, "Operands do not specify an effect\n"); 462 } 463 else if (!strcmp(ident, "expand")) { 464 parse_err(SYNERR, "Operands do not specify an expand\n"); 465 } 466 else if (!strcmp(ident, "rewrite")) { 467 parse_err(SYNERR, "Operands do not specify a rewrite\n"); 468 } 469 else if (!strcmp(ident, "constraint"))oper->_constraint= constraint_parse(); 470 else if (!strcmp(ident, "construct")) oper->_construct = construct_parse(); 471 else if (!strcmp(ident, "format")) oper->_format = format_parse(); 472 else if (!strcmp(ident, "interface")) oper->_interface = interface_parse(); 473 // Check identifier to see if it is the name of an attribute 474 else if (((attr = _globalNames[ident]->is_attribute()) != NULL) && 475 (attr->_atype == OP_ATTR)) oper->_attribs = attr_parse(ident); 476 else { 477 parse_err(SYNERR, "expected one of - constraint, predicate, match, encode, format, construct, or the name of a defined operand attribute at %s\n", ident); 478 } 479 skipws(); 480 } while(_curchar != '%'); 481 next_char(); 482 if (_curchar != '}') { 483 parse_err(SYNERR, "missing '%}' in operand definition\n"); 484 return; 485 } 486 // Add operand to tail of operand list 487 _AD.addForm(oper); 488 } 489 490 //------------------------------opclass_parse---------------------------------- 491 // Operand Classes are a block with a comma delimited list of operand names 492 void ADLParser::opclass_parse(void) { 493 char *ident; 494 OpClassForm *opc; 495 OperandForm *opForm; 496 497 // First get the name of the operand class 498 skipws(); 499 if( (ident = get_unique_ident(_globalNames,"opclass")) == NULL ) 500 return; 501 opc = new OpClassForm(ident); // Create new operand class form 502 _globalNames.Insert(ident, opc); // Add name to the name table 503 504 // Debugging Stuff 505 if (_AD._adl_debug > 1) 506 fprintf(stderr,"Parsing Operand Class Form %s\n", ident); 507 508 // Get the list of operands 509 skipws(); 510 if (_curchar != '(') { 511 parse_err(SYNERR, "missing '(' in operand definition\n"); 512 return; 513 } 514 do { 515 next_char(); // Skip past open paren or comma 516 ident = get_ident(); // Grab next identifier 517 if (ident == NULL) { 518 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar); 519 continue; 520 } 521 // Check identifier to see if it is the name of an operand 522 const Form *form = _globalNames[ident]; 523 opForm = form ? form->is_operand() : NULL; 524 if ( opForm ) { 525 opc->_oplst.addName(ident); // Add operand to opclass list 526 opForm->_classes.addName(opc->_ident);// Add opclass to operand list 527 } 528 else { 529 parse_err(SYNERR, "expected name of a defined operand at %s\n", ident); 530 } 531 skipws(); // skip trailing whitespace 532 } while (_curchar == ','); // Check for the comma 533 // Check for closing ')' 534 if (_curchar != ')') { 535 parse_err(SYNERR, "missing ')' or ',' in opclass definition\n"); 536 return; 537 } 538 next_char(); // Consume the ')' 539 skipws(); 540 // Check for closing ';' 541 if (_curchar != ';') { 542 parse_err(SYNERR, "missing ';' in opclass definition\n"); 543 return; 544 } 545 next_char(); // Consume the ';' 546 // Add operand to tail of operand list 547 _AD.addForm(opc); 548 } 549 550 //------------------------------ins_attr_parse--------------------------------- 551 void ADLParser::ins_attr_parse(void) { 552 char *ident; 553 char *aexpr; 554 AttributeForm *attrib; 555 556 // get name for the instruction attribute 557 skipws(); // Skip leading whitespace 558 if( (ident = get_unique_ident(_globalNames,"inst_attrib")) == NULL ) 559 return; 560 // Debugging Stuff 561 if (_AD._adl_debug > 1) fprintf(stderr,"Parsing Ins_Attribute Form %s\n", ident); 562 563 // Get default value of the instruction attribute 564 skipws(); // Skip whitespace 565 if ((aexpr = get_paren_expr("attribute default expression string")) == NULL) { 566 parse_err(SYNERR, "missing '(' in ins_attrib definition\n"); 567 return; 568 } 569 // Debug Stuff 570 if (_AD._adl_debug > 1) fprintf(stderr,"Attribute Expression: %s\n", aexpr); 571 572 // Check for terminator 573 if (_curchar != ';') { 574 parse_err(SYNERR, "missing ';' in ins_attrib definition\n"); 575 return; 576 } 577 next_char(); // Advance past the ';' 578 579 // Construct the attribute, record global name, and store in ArchDesc 580 attrib = new AttributeForm(ident, INS_ATTR, aexpr); 581 _globalNames.Insert(ident, attrib); // Add name to the name table 582 _AD.addForm(attrib); 583 } 584 585 //------------------------------op_attr_parse---------------------------------- 586 void ADLParser::op_attr_parse(void) { 587 char *ident; 588 char *aexpr; 589 AttributeForm *attrib; 590 591 // get name for the operand attribute 592 skipws(); // Skip leading whitespace 593 if( (ident = get_unique_ident(_globalNames,"op_attrib")) == NULL ) 594 return; 595 // Debugging Stuff 596 if (_AD._adl_debug > 1) fprintf(stderr,"Parsing Op_Attribute Form %s\n", ident); 597 598 // Get default value of the instruction attribute 599 skipws(); // Skip whitespace 600 if ((aexpr = get_paren_expr("attribute default expression string")) == NULL) { 601 parse_err(SYNERR, "missing '(' in op_attrib definition\n"); 602 return; 603 } 604 // Debug Stuff 605 if (_AD._adl_debug > 1) fprintf(stderr,"Attribute Expression: %s\n", aexpr); 606 607 // Check for terminator 608 if (_curchar != ';') { 609 parse_err(SYNERR, "missing ';' in op_attrib definition\n"); 610 return; 611 } 612 next_char(); // Advance past the ';' 613 614 // Construct the attribute, record global name, and store in ArchDesc 615 attrib = new AttributeForm(ident, OP_ATTR, aexpr); 616 _globalNames.Insert(ident, attrib); 617 _AD.addForm(attrib); 618 } 619 620 //------------------------------definitions_parse----------------------------------- 621 void ADLParser::definitions_parse(void) { 622 skipws(); // Skip leading whitespace 623 if (_curchar == '%' && *(_ptr+1) == '{') { 624 next_char(); next_char(); // Skip "%{" 625 skipws(); 626 while (_curchar != '%' && *(_ptr+1) != '}') { 627 // Process each definition until finding closing string "%}" 628 char *token = get_ident(); 629 if (token == NULL) { 630 parse_err(SYNERR, "missing identifier inside definitions block.\n"); 631 return; 632 } 633 if (strcmp(token,"int_def")==0) { int_def_parse(); } 634 // if (strcmp(token,"str_def")==0) { str_def_parse(); } 635 skipws(); 636 } 637 } 638 else { 639 parse_err(SYNERR, "Missing %%{ ... %%} block after definitions keyword.\n"); 640 return; 641 } 642 } 643 644 //------------------------------int_def_parse---------------------------------- 645 // Parse Example: 646 // int_def MEMORY_REF_COST ( 200, DEFAULT_COST * 2); 647 // <keyword> <name> ( <int_value>, <description> ); 648 // 649 void ADLParser::int_def_parse(void) { 650 char *name = NULL; // Name of definition 651 char *value = NULL; // its value, 652 int int_value = -1; // positive values only 653 char *description = NULL; // textual description 654 655 // Get definition name 656 skipws(); // Skip whitespace 657 name = get_ident(); 658 if (name == NULL) { 659 parse_err(SYNERR, "missing definition name after int_def\n"); 660 return; 661 } 662 663 // Check for value of int_def dname( integer_value [, string_expression ] ) 664 skipws(); 665 if (_curchar == '(') { 666 667 // Parse the integer value. 668 next_char(); 669 value = get_ident(); 670 if (value == NULL) { 671 parse_err(SYNERR, "missing value in int_def\n"); 672 return; 673 } 674 if( !is_int_token(value, int_value) ) { 675 parse_err(SYNERR, "value in int_def is not recognized as integer\n"); 676 return; 677 } 678 skipws(); 679 680 // Check for description 681 if (_curchar == ',') { 682 next_char(); // skip ',' 683 684 description = get_expr("int_def description", ")"); 685 if (description == NULL) { 686 parse_err(SYNERR, "invalid or missing description in int_def\n"); 687 return; 688 } 689 trim(description); 690 } 691 692 if (_curchar != ')') { 693 parse_err(SYNERR, "missing ')' in register definition statement\n"); 694 return; 695 } 696 next_char(); 697 } 698 699 // Check for closing ';' 700 skipws(); 701 if (_curchar != ';') { 702 parse_err(SYNERR, "missing ';' after int_def\n"); 703 return; 704 } 705 next_char(); // move past ';' 706 707 // Debug Stuff 708 if (_AD._adl_debug > 1) { 709 fprintf(stderr,"int_def: %s ( %s, %s )\n", name, 710 (value), (description ? description : "")); 711 } 712 713 // Record new definition. 714 Expr *expr = new Expr(name, description, int_value, int_value); 715 const Expr *old_expr = _AD.globalDefs().define(name, expr); 716 if (old_expr != NULL) { 717 parse_err(SYNERR, "Duplicate definition\n"); 718 return; 719 } 720 721 return; 722 } 723 724 725 //------------------------------source_parse----------------------------------- 726 void ADLParser::source_parse(void) { 727 SourceForm *source; // Encode class for instruction/operand 728 char *rule = NULL; // String representation of encode rule 729 730 skipws(); // Skip leading whitespace 731 if ( (rule = find_cpp_block("source block")) == NULL ) { 732 parse_err(SYNERR, "incorrect or missing block for 'source'.\n"); 733 return; 734 } 735 // Debug Stuff 736 if (_AD._adl_debug > 1) fprintf(stderr,"Source Form: %s\n", rule); 737 738 source = new SourceForm(rule); // Build new Source object 739 _AD.addForm(source); 740 // skipws(); 741 } 742 743 //------------------------------source_hpp_parse------------------------------- 744 // Parse a source_hpp %{ ... %} block. 745 // The code gets stuck into the ad_<arch>.hpp file. 746 // If the source_hpp block appears before the register block in the AD 747 // file, it goes up at the very top of the ad_<arch>.hpp file, so that 748 // it can be used by register encodings, etc. Otherwise, it goes towards 749 // the bottom, where it's useful as a global definition to *.cpp files. 750 void ADLParser::source_hpp_parse(void) { 751 char *rule = NULL; // String representation of encode rule 752 753 skipws(); // Skip leading whitespace 754 if ( (rule = find_cpp_block("source_hpp block")) == NULL ) { 755 parse_err(SYNERR, "incorrect or missing block for 'source_hpp'.\n"); 756 return; 757 } 758 // Debug Stuff 759 if (_AD._adl_debug > 1) fprintf(stderr,"Header Form: %s\n", rule); 760 761 if (_AD.get_registers() == NULL) { 762 // Very early in the file, before reg_defs, we collect pre-headers. 763 PreHeaderForm* pre_header = new PreHeaderForm(rule); 764 _AD.addForm(pre_header); 765 } else { 766 // Normally, we collect header info, placed at the bottom of the hpp file. 767 HeaderForm* header = new HeaderForm(rule); 768 _AD.addForm(header); 769 } 770 } 771 772 //------------------------------reg_parse-------------------------------------- 773 void ADLParser::reg_parse(void) { 774 775 // Create the RegisterForm for the architecture description. 776 RegisterForm *regBlock = new RegisterForm(); // Build new Source object 777 regBlock->_linenum = linenum(); 778 _AD.addForm(regBlock); 779 780 skipws(); // Skip leading whitespace 781 if (_curchar == '%' && *(_ptr+1) == '{') { 782 next_char(); next_char(); // Skip "%{" 783 skipws(); 784 while (_curchar != '%' && *(_ptr+1) != '}') { 785 char *token = get_ident(); 786 if (token == NULL) { 787 parse_err(SYNERR, "missing identifier inside register block.\n"); 788 return; 789 } 790 if (strcmp(token,"reg_def")==0) { reg_def_parse(); } 791 else if (strcmp(token,"reg_class")==0) { reg_class_parse(); } 792 else if (strcmp(token,"alloc_class")==0) { alloc_class_parse(); } 793 else if (strcmp(token,"#define")==0) { preproc_define(); } 794 else { parse_err(SYNERR, "bad token %s inside register block.\n", token); break; } 795 skipws(); 796 } 797 } 798 else { 799 parse_err(SYNERR, "Missing %c{ ... %c} block after register keyword.\n",'%','%'); 800 return; 801 } 802 803 // Add reg_class spill_regs 804 regBlock->addSpillRegClass(); 805 } 806 807 //------------------------------encode_parse----------------------------------- 808 void ADLParser::encode_parse(void) { 809 EncodeForm *encBlock; // Information about instruction/operand encoding 810 char *desc = NULL; // String representation of encode rule 811 812 _AD.getForm(&encBlock); 813 if ( encBlock == NULL) { 814 // Create the EncodeForm for the architecture description. 815 encBlock = new EncodeForm(); // Build new Source object 816 _AD.addForm(encBlock); 817 } 818 819 skipws(); // Skip leading whitespace 820 if (_curchar == '%' && *(_ptr+1) == '{') { 821 next_char(); next_char(); // Skip "%{" 822 skipws(); 823 while (_curchar != '%' && *(_ptr+1) != '}') { 824 char *token = get_ident(); 825 if (token == NULL) { 826 parse_err(SYNERR, "missing identifier inside encoding block.\n"); 827 return; 828 } 829 if (strcmp(token,"enc_class")==0) { enc_class_parse(); } 830 skipws(); 831 } 832 } 833 else { 834 parse_err(SYNERR, "Missing %c{ ... %c} block after encode keyword.\n",'%','%'); 835 return; 836 } 837 } 838 839 //------------------------------enc_class_parse-------------------------------- 840 void ADLParser::enc_class_parse(void) { 841 char *ec_name; // Name of encoding class being defined 842 843 // Get encoding class name 844 skipws(); // Skip whitespace 845 ec_name = get_ident(); 846 if (ec_name == NULL) { 847 parse_err(SYNERR, "missing encoding class name after encode.\n"); 848 return; 849 } 850 851 EncClass *encoding = _AD._encode->add_EncClass(ec_name); 852 encoding->_linenum = linenum(); 853 854 skipws(); // Skip leading whitespace 855 // Check for optional parameter list 856 if (_curchar == '(') { 857 do { 858 char *pType = NULL; // parameter type 859 char *pName = NULL; // parameter name 860 861 next_char(); // skip open paren & comma characters 862 skipws(); 863 if (_curchar == ')') break; 864 865 // Get parameter type 866 pType = get_ident(); 867 if (pType == NULL) { 868 parse_err(SYNERR, "parameter type expected at %c\n", _curchar); 869 return; 870 } 871 872 skipws(); 873 // Get parameter name 874 pName = get_ident(); 875 if (pName == NULL) { 876 parse_err(SYNERR, "parameter name expected at %c\n", _curchar); 877 return; 878 } 879 880 // Record parameter type and name 881 encoding->add_parameter( pType, pName ); 882 883 skipws(); 884 } while(_curchar == ','); 885 886 if (_curchar != ')') parse_err(SYNERR, "missing ')'\n"); 887 else { 888 next_char(); // Skip ')' 889 } 890 } // Done with parameter list 891 892 skipws(); 893 // Check for block starting delimiters 894 if ((_curchar != '%') || (*(_ptr+1) != '{')) { // If not open block 895 parse_err(SYNERR, "missing '%c{' in enc_class definition\n", '%'); 896 return; 897 } 898 next_char(); // Skip '%' 899 next_char(); // Skip '{' 900 901 enc_class_parse_block(encoding, ec_name); 902 } 903 904 905 void ADLParser::enc_class_parse_block(EncClass* encoding, char* ec_name) { 906 skipws_no_preproc(); // Skip leading whitespace 907 // Prepend location descriptor, for debugging; cf. ADLParser::find_cpp_block 908 if (_AD._adlocation_debug) { 909 encoding->add_code(get_line_string()); 910 } 911 912 // Collect the parts of the encode description 913 // (1) strings that are passed through to output 914 // (2) replacement/substitution variable, preceeded by a '$' 915 while ( (_curchar != '%') && (*(_ptr+1) != '}') ) { 916 917 // (1) 918 // Check if there is a string to pass through to output 919 char *start = _ptr; // Record start of the next string 920 while ((_curchar != '$') && ((_curchar != '%') || (*(_ptr+1) != '}')) ) { 921 // If at the start of a comment, skip past it 922 if( (_curchar == '/') && ((*(_ptr+1) == '/') || (*(_ptr+1) == '*')) ) { 923 skipws_no_preproc(); 924 } else { 925 // ELSE advance to the next character, or start of the next line 926 next_char_or_line(); 927 } 928 } 929 // If a string was found, terminate it and record in EncClass 930 if ( start != _ptr ) { 931 *_ptr = '\0'; // Terminate the string 932 encoding->add_code(start); 933 } 934 935 // (2) 936 // If we are at a replacement variable, 937 // copy it and record in EncClass 938 if ( _curchar == '$' ) { 939 // Found replacement Variable 940 char *rep_var = get_rep_var_ident_dup(); 941 // Add flag to _strings list indicating we should check _rep_vars 942 encoding->add_rep_var(rep_var); 943 } 944 } // end while part of format description 945 next_char(); // Skip '%' 946 next_char(); // Skip '}' 947 948 skipws(); 949 950 if (_AD._adlocation_debug) { 951 encoding->add_code(end_line_marker()); 952 } 953 954 // Debug Stuff 955 if (_AD._adl_debug > 1) fprintf(stderr,"EncodingClass Form: %s\n", ec_name); 956 } 957 958 //------------------------------frame_parse----------------------------------- 959 void ADLParser::frame_parse(void) { 960 FrameForm *frame; // Information about stack-frame layout 961 char *desc = NULL; // String representation of frame 962 963 skipws(); // Skip leading whitespace 964 965 frame = new FrameForm(); // Build new Frame object 966 // Check for open block sequence 967 skipws(); // Skip leading whitespace 968 if (_curchar == '%' && *(_ptr+1) == '{') { 969 next_char(); next_char(); // Skip "%{" 970 skipws(); 971 while (_curchar != '%' && *(_ptr+1) != '}') { 972 char *token = get_ident(); 973 if (token == NULL) { 974 parse_err(SYNERR, "missing identifier inside frame block.\n"); 975 return; 976 } 977 if (strcmp(token,"stack_direction")==0) { 978 stack_dir_parse(frame); 979 } 980 if (strcmp(token,"sync_stack_slots")==0) { 981 sync_stack_slots_parse(frame); 982 } 983 if (strcmp(token,"frame_pointer")==0) { 984 frame_pointer_parse(frame, false); 985 } 986 if (strcmp(token,"interpreter_frame_pointer")==0) { 987 interpreter_frame_pointer_parse(frame, false); 988 // Add reg_class interpreter_frame_pointer_reg 989 if( _AD._register != NULL ) { 990 RegClass *reg_class = _AD._register->addRegClass("interpreter_frame_pointer_reg"); 991 char *interpreter_frame_pointer_reg = frame->_interpreter_frame_pointer_reg; 992 if( interpreter_frame_pointer_reg != NULL ) { 993 RegDef *regDef = _AD._register->getRegDef(interpreter_frame_pointer_reg); 994 reg_class->addReg(regDef); // add regDef to regClass 995 } 996 } 997 } 998 if (strcmp(token,"inline_cache_reg")==0) { 999 inline_cache_parse(frame, false); 1000 // Add reg_class inline_cache_reg 1001 if( _AD._register != NULL ) { 1002 RegClass *reg_class = _AD._register->addRegClass("inline_cache_reg"); 1003 char *inline_cache_reg = frame->_inline_cache_reg; 1004 if( inline_cache_reg != NULL ) { 1005 RegDef *regDef = _AD._register->getRegDef(inline_cache_reg); 1006 reg_class->addReg(regDef); // add regDef to regClass 1007 } 1008 } 1009 } 1010 if (strcmp(token,"compiler_method_oop_reg")==0) { 1011 parse_err(WARN, "Using obsolete Token, compiler_method_oop_reg"); 1012 skipws(); 1013 } 1014 if (strcmp(token,"interpreter_method_oop_reg")==0) { 1015 interpreter_method_oop_parse(frame, false); 1016 // Add reg_class interpreter_method_oop_reg 1017 if( _AD._register != NULL ) { 1018 RegClass *reg_class = _AD._register->addRegClass("interpreter_method_oop_reg"); 1019 char *method_oop_reg = frame->_interpreter_method_oop_reg; 1020 if( method_oop_reg != NULL ) { 1021 RegDef *regDef = _AD._register->getRegDef(method_oop_reg); 1022 reg_class->addReg(regDef); // add regDef to regClass 1023 } 1024 } 1025 } 1026 if (strcmp(token,"cisc_spilling_operand_name")==0) { 1027 cisc_spilling_operand_name_parse(frame, false); 1028 } 1029 if (strcmp(token,"stack_alignment")==0) { 1030 stack_alignment_parse(frame); 1031 } 1032 if (strcmp(token,"return_addr")==0) { 1033 return_addr_parse(frame, false); 1034 } 1035 if (strcmp(token,"in_preserve_stack_slots")==0) { 1036 preserve_stack_parse(frame); 1037 } 1038 if (strcmp(token,"out_preserve_stack_slots")==0) { 1039 parse_err(WARN, "Using obsolete token, out_preserve_stack_slots"); 1040 skipws(); 1041 } 1042 if (strcmp(token,"varargs_C_out_slots_killed")==0) { 1043 frame->_varargs_C_out_slots_killed = parse_one_arg("varargs C out slots killed"); 1044 } 1045 if (strcmp(token,"calling_convention")==0) { 1046 frame->_calling_convention = calling_convention_parse(); 1047 } 1048 if (strcmp(token,"return_value")==0) { 1049 frame->_return_value = return_value_parse(); 1050 } 1051 if (strcmp(token,"c_frame_pointer")==0) { 1052 frame_pointer_parse(frame, true); 1053 } 1054 if (strcmp(token,"c_return_addr")==0) { 1055 return_addr_parse(frame, true); 1056 } 1057 if (strcmp(token,"c_calling_convention")==0) { 1058 frame->_c_calling_convention = calling_convention_parse(); 1059 } 1060 if (strcmp(token,"c_return_value")==0) { 1061 frame->_c_return_value = return_value_parse(); 1062 } 1063 1064 skipws(); 1065 } 1066 } 1067 else { 1068 parse_err(SYNERR, "Missing %c{ ... %c} block after encode keyword.\n",'%','%'); 1069 return; 1070 } 1071 // All Java versions are required, native versions are optional 1072 if(frame->_frame_pointer == NULL) { 1073 parse_err(SYNERR, "missing frame pointer definition in frame section.\n"); 1074 return; 1075 } 1076 // !!!!! !!!!! 1077 // if(frame->_interpreter_frame_ptr_reg == NULL) { 1078 // parse_err(SYNERR, "missing interpreter frame pointer definition in frame section.\n"); 1079 // return; 1080 // } 1081 if(frame->_alignment == NULL) { 1082 parse_err(SYNERR, "missing alignment definition in frame section.\n"); 1083 return; 1084 } 1085 if(frame->_return_addr == NULL) { 1086 parse_err(SYNERR, "missing return address location in frame section.\n"); 1087 return; 1088 } 1089 if(frame->_in_preserve_slots == NULL) { 1090 parse_err(SYNERR, "missing stack slot preservation definition in frame section.\n"); 1091 return; 1092 } 1093 if(frame->_varargs_C_out_slots_killed == NULL) { 1094 parse_err(SYNERR, "missing varargs C out slots killed definition in frame section.\n"); 1095 return; 1096 } 1097 if(frame->_calling_convention == NULL) { 1098 parse_err(SYNERR, "missing calling convention definition in frame section.\n"); 1099 return; 1100 } 1101 if(frame->_return_value == NULL) { 1102 parse_err(SYNERR, "missing return value definition in frame section.\n"); 1103 return; 1104 } 1105 // Fill natives in identically with the Java versions if not present. 1106 if(frame->_c_frame_pointer == NULL) { 1107 frame->_c_frame_pointer = frame->_frame_pointer; 1108 } 1109 if(frame->_c_return_addr == NULL) { 1110 frame->_c_return_addr = frame->_return_addr; 1111 frame->_c_return_addr_loc = frame->_return_addr_loc; 1112 } 1113 if(frame->_c_calling_convention == NULL) { 1114 frame->_c_calling_convention = frame->_calling_convention; 1115 } 1116 if(frame->_c_return_value == NULL) { 1117 frame->_c_return_value = frame->_return_value; 1118 } 1119 1120 // Debug Stuff 1121 if (_AD._adl_debug > 1) fprintf(stderr,"Frame Form: %s\n", desc); 1122 1123 // Create the EncodeForm for the architecture description. 1124 _AD.addForm(frame); 1125 // skipws(); 1126 } 1127 1128 //------------------------------stack_dir_parse-------------------------------- 1129 void ADLParser::stack_dir_parse(FrameForm *frame) { 1130 char *direction = parse_one_arg("stack direction entry"); 1131 if (strcmp(direction, "TOWARDS_LOW") == 0) { 1132 frame->_direction = false; 1133 } 1134 else if (strcmp(direction, "TOWARDS_HIGH") == 0) { 1135 frame->_direction = true; 1136 } 1137 else { 1138 parse_err(SYNERR, "invalid value inside stack direction entry.\n"); 1139 return; 1140 } 1141 } 1142 1143 //------------------------------sync_stack_slots_parse------------------------- 1144 void ADLParser::sync_stack_slots_parse(FrameForm *frame) { 1145 // Assign value into frame form 1146 frame->_sync_stack_slots = parse_one_arg("sync stack slots entry"); 1147 } 1148 1149 //------------------------------frame_pointer_parse---------------------------- 1150 void ADLParser::frame_pointer_parse(FrameForm *frame, bool native) { 1151 char *frame_pointer = parse_one_arg("frame pointer entry"); 1152 // Assign value into frame form 1153 if (native) { frame->_c_frame_pointer = frame_pointer; } 1154 else { frame->_frame_pointer = frame_pointer; } 1155 } 1156 1157 //------------------------------interpreter_frame_pointer_parse---------------------------- 1158 void ADLParser::interpreter_frame_pointer_parse(FrameForm *frame, bool native) { 1159 frame->_interpreter_frame_pointer_reg = parse_one_arg("interpreter frame pointer entry"); 1160 } 1161 1162 //------------------------------inline_cache_parse----------------------------- 1163 void ADLParser::inline_cache_parse(FrameForm *frame, bool native) { 1164 frame->_inline_cache_reg = parse_one_arg("inline cache reg entry"); 1165 } 1166 1167 //------------------------------interpreter_method_oop_parse------------------ 1168 void ADLParser::interpreter_method_oop_parse(FrameForm *frame, bool native) { 1169 frame->_interpreter_method_oop_reg = parse_one_arg("method oop reg entry"); 1170 } 1171 1172 //------------------------------cisc_spilling_operand_parse--------------------- 1173 void ADLParser::cisc_spilling_operand_name_parse(FrameForm *frame, bool native) { 1174 frame->_cisc_spilling_operand_name = parse_one_arg("cisc spilling operand name"); 1175 } 1176 1177 //------------------------------stack_alignment_parse-------------------------- 1178 void ADLParser::stack_alignment_parse(FrameForm *frame) { 1179 char *alignment = parse_one_arg("stack alignment entry"); 1180 // Assign value into frame 1181 frame->_alignment = alignment; 1182 } 1183 1184 //------------------------------parse_one_arg------------------------------- 1185 char *ADLParser::parse_one_arg(const char *description) { 1186 char *token = NULL; 1187 if(_curchar == '(') { 1188 next_char(); 1189 skipws(); 1190 token = get_expr(description, ")"); 1191 if (token == NULL) { 1192 parse_err(SYNERR, "missing value inside %s.\n", description); 1193 return NULL; 1194 } 1195 next_char(); // skip the close paren 1196 if(_curchar != ';') { // check for semi-colon 1197 parse_err(SYNERR, "missing %c in.\n", ';', description); 1198 return NULL; 1199 } 1200 next_char(); // skip the semi-colon 1201 } 1202 else { 1203 parse_err(SYNERR, "Missing %c in.\n", '(', description); 1204 return NULL; 1205 } 1206 1207 trim(token); 1208 return token; 1209 } 1210 1211 //------------------------------return_addr_parse------------------------------ 1212 void ADLParser::return_addr_parse(FrameForm *frame, bool native) { 1213 bool in_register = true; 1214 if(_curchar == '(') { 1215 next_char(); 1216 skipws(); 1217 char *token = get_ident(); 1218 if (token == NULL) { 1219 parse_err(SYNERR, "missing value inside return address entry.\n"); 1220 return; 1221 } 1222 // check for valid values for stack/register 1223 if (strcmp(token, "REG") == 0) { 1224 in_register = true; 1225 } 1226 else if (strcmp(token, "STACK") == 0) { 1227 in_register = false; 1228 } 1229 else { 1230 parse_err(SYNERR, "invalid value inside return_address entry.\n"); 1231 return; 1232 } 1233 if (native) { frame->_c_return_addr_loc = in_register; } 1234 else { frame->_return_addr_loc = in_register; } 1235 1236 // Parse expression that specifies register or stack position 1237 skipws(); 1238 char *token2 = get_expr("return address entry", ")"); 1239 if (token2 == NULL) { 1240 parse_err(SYNERR, "missing value inside return address entry.\n"); 1241 return; 1242 } 1243 next_char(); // skip the close paren 1244 if (native) { frame->_c_return_addr = token2; } 1245 else { frame->_return_addr = token2; } 1246 1247 if(_curchar != ';') { // check for semi-colon 1248 parse_err(SYNERR, "missing %c in return address entry.\n", ';'); 1249 return; 1250 } 1251 next_char(); // skip the semi-colon 1252 } 1253 else { 1254 parse_err(SYNERR, "Missing %c in return_address entry.\n", '('); 1255 } 1256 } 1257 1258 //------------------------------preserve_stack_parse--------------------------- 1259 void ADLParser::preserve_stack_parse(FrameForm *frame) { 1260 if(_curchar == '(') { 1261 char *token = get_paren_expr("preserve_stack_slots"); 1262 frame->_in_preserve_slots = token; 1263 1264 if(_curchar != ';') { // check for semi-colon 1265 parse_err(SYNERR, "missing %c in preserve stack slot entry.\n", ';'); 1266 return; 1267 } 1268 next_char(); // skip the semi-colon 1269 } 1270 else { 1271 parse_err(SYNERR, "Missing %c in preserve stack slot entry.\n", '('); 1272 } 1273 } 1274 1275 //------------------------------calling_convention_parse----------------------- 1276 char *ADLParser::calling_convention_parse() { 1277 char *desc = NULL; // String representation of calling_convention 1278 1279 skipws(); // Skip leading whitespace 1280 if ( (desc = find_cpp_block("calling convention block")) == NULL ) { 1281 parse_err(SYNERR, "incorrect or missing block for 'calling_convention'.\n"); 1282 } 1283 return desc; 1284 } 1285 1286 //------------------------------return_value_parse----------------------------- 1287 char *ADLParser::return_value_parse() { 1288 char *desc = NULL; // String representation of calling_convention 1289 1290 skipws(); // Skip leading whitespace 1291 if ( (desc = find_cpp_block("return value block")) == NULL ) { 1292 parse_err(SYNERR, "incorrect or missing block for 'return_value'.\n"); 1293 } 1294 return desc; 1295 } 1296 1297 //------------------------------ins_pipe_parse--------------------------------- 1298 void ADLParser::ins_pipe_parse(InstructForm &instr) { 1299 char * ident; 1300 1301 skipws(); 1302 if ( _curchar != '(' ) { // Check for delimiter 1303 parse_err(SYNERR, "missing \"(\" in ins_pipe definition\n"); 1304 return; 1305 } 1306 1307 next_char(); 1308 ident = get_ident(); // Grab next identifier 1309 1310 if (ident == NULL) { 1311 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar); 1312 return; 1313 } 1314 1315 skipws(); 1316 if ( _curchar != ')' ) { // Check for delimiter 1317 parse_err(SYNERR, "missing \")\" in ins_pipe definition\n"); 1318 return; 1319 } 1320 1321 next_char(); // skip the close paren 1322 if(_curchar != ';') { // check for semi-colon 1323 parse_err(SYNERR, "missing %c in return value entry.\n", ';'); 1324 return; 1325 } 1326 next_char(); // skip the semi-colon 1327 1328 // Check ident for validity 1329 if (_AD._pipeline && !_AD._pipeline->_classlist.search(ident)) { 1330 parse_err(SYNERR, "\"%s\" is not a valid pipeline class\n", ident); 1331 return; 1332 } 1333 1334 // Add this instruction to the list in the pipeline class 1335 _AD._pipeline->_classdict[ident]->is_pipeclass()->_instructs.addName(instr._ident); 1336 1337 // Set the name of the pipeline class in the instruction 1338 instr._ins_pipe = ident; 1339 return; 1340 } 1341 1342 //------------------------------pipe_parse------------------------------------- 1343 void ADLParser::pipe_parse(void) { 1344 PipelineForm *pipeline; // Encode class for instruction/operand 1345 char * ident; 1346 1347 pipeline = new PipelineForm(); // Build new Source object 1348 _AD.addForm(pipeline); 1349 1350 skipws(); // Skip leading whitespace 1351 // Check for block delimiter 1352 if ( (_curchar != '%') 1353 || ( next_char(), (_curchar != '{')) ) { 1354 parse_err(SYNERR, "missing '%{' in pipeline definition\n"); 1355 return; 1356 } 1357 next_char(); // Maintain the invariant 1358 do { 1359 ident = get_ident(); // Grab next identifier 1360 if (ident == NULL) { 1361 parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar); 1362 continue; 1363 } 1364 if (!strcmp(ident, "resources" )) resource_parse(*pipeline); 1365 else if (!strcmp(ident, "pipe_desc" )) pipe_desc_parse(*pipeline); 1366 else if (!strcmp(ident, "pipe_class")) pipe_class_parse(*pipeline); 1367 else if (!strcmp(ident, "define")) { 1368 skipws(); 1369 if ( (_curchar != '%') 1370 || ( next_char(), (_curchar != '{')) ) { 1371 parse_err(SYNERR, "expected '%{'\n"); 1372 return; 1373 } 1374 next_char(); skipws(); 1375 1376 char *node_class = get_ident(); 1377 if (node_class == NULL) { 1378 parse_err(SYNERR, "expected identifier, found \"%c\"\n", _curchar); 1379 return; 1380 } 1381 1382 skipws(); 1383 if (_curchar != ',' && _curchar != '=') { 1384 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar); 1385 break; 1386 } 1387 next_char(); skipws(); 1388 1389 char *pipe_class = get_ident(); 1390 if (pipe_class == NULL) { 1391 parse_err(SYNERR, "expected identifier, found \"%c\"\n", _curchar); 1392 return; 1393 } 1394 if (_curchar != ';' ) { 1395 parse_err(SYNERR, "expected `;`, found '%c'\n", _curchar); 1396 break; 1397 } 1398 next_char(); // Skip over semi-colon 1399 1400 skipws(); 1401 if ( (_curchar != '%') 1402 || ( next_char(), (_curchar != '}')) ) { 1403 parse_err(SYNERR, "expected '%%}', found \"%c\"\n", _curchar); 1404 } 1405 next_char(); 1406 1407 // Check ident for validity 1408 if (_AD._pipeline && !_AD._pipeline->_classlist.search(pipe_class)) { 1409 parse_err(SYNERR, "\"%s\" is not a valid pipeline class\n", pipe_class); 1410 return; 1411 } 1412 1413 // Add this machine node to the list in the pipeline class 1414 _AD._pipeline->_classdict[pipe_class]->is_pipeclass()->_instructs.addName(node_class); 1415 1416 MachNodeForm *machnode = new MachNodeForm(node_class); // Create new machnode form 1417 machnode->_machnode_pipe = pipe_class; 1418 1419 _AD.addForm(machnode); 1420 } 1421 else if (!strcmp(ident, "attributes")) { 1422 bool vsi_seen = false, bhds_seen = false; 1423 1424 skipws(); 1425 if ( (_curchar != '%') 1426 || ( next_char(), (_curchar != '{')) ) { 1427 parse_err(SYNERR, "expected '%{'\n"); 1428 return; 1429 } 1430 next_char(); skipws(); 1431 1432 while (_curchar != '%') { 1433 ident = get_ident(); 1434 if (ident == NULL) 1435 break; 1436 1437 if (!strcmp(ident, "variable_size_instructions")) { 1438 skipws(); 1439 if (_curchar == ';') { 1440 next_char(); skipws(); 1441 } 1442 1443 pipeline->_variableSizeInstrs = true; 1444 vsi_seen = true; 1445 continue; 1446 } 1447 1448 if (!strcmp(ident, "fixed_size_instructions")) { 1449 skipws(); 1450 if (_curchar == ';') { 1451 next_char(); skipws(); 1452 } 1453 1454 pipeline->_variableSizeInstrs = false; 1455 vsi_seen = true; 1456 continue; 1457 } 1458 1459 if (!strcmp(ident, "branch_has_delay_slot")) { 1460 skipws(); 1461 if (_curchar == ';') { 1462 next_char(); skipws(); 1463 } 1464 1465 pipeline->_branchHasDelaySlot = true; 1466 bhds_seen = true; 1467 continue; 1468 } 1469 1470 if (!strcmp(ident, "max_instructions_per_bundle")) { 1471 skipws(); 1472 if (_curchar != '=') { 1473 parse_err(SYNERR, "expected `=`\n"); 1474 break; 1475 } 1476 1477 next_char(); skipws(); 1478 pipeline->_maxInstrsPerBundle = get_int(); 1479 skipws(); 1480 1481 if (_curchar == ';') { 1482 next_char(); skipws(); 1483 } 1484 1485 continue; 1486 } 1487 1488 if (!strcmp(ident, "max_bundles_per_cycle")) { 1489 skipws(); 1490 if (_curchar != '=') { 1491 parse_err(SYNERR, "expected `=`\n"); 1492 break; 1493 } 1494 1495 next_char(); skipws(); 1496 pipeline->_maxBundlesPerCycle = get_int(); 1497 skipws(); 1498 1499 if (_curchar == ';') { 1500 next_char(); skipws(); 1501 } 1502 1503 continue; 1504 } 1505 1506 if (!strcmp(ident, "instruction_unit_size")) { 1507 skipws(); 1508 if (_curchar != '=') { 1509 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar); 1510 break; 1511 } 1512 1513 next_char(); skipws(); 1514 pipeline->_instrUnitSize = get_int(); 1515 skipws(); 1516 1517 if (_curchar == ';') { 1518 next_char(); skipws(); 1519 } 1520 1521 continue; 1522 } 1523 1524 if (!strcmp(ident, "bundle_unit_size")) { 1525 skipws(); 1526 if (_curchar != '=') { 1527 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar); 1528 break; 1529 } 1530 1531 next_char(); skipws(); 1532 pipeline->_bundleUnitSize = get_int(); 1533 skipws(); 1534 1535 if (_curchar == ';') { 1536 next_char(); skipws(); 1537 } 1538 1539 continue; 1540 } 1541 1542 if (!strcmp(ident, "instruction_fetch_unit_size")) { 1543 skipws(); 1544 if (_curchar != '=') { 1545 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar); 1546 break; 1547 } 1548 1549 next_char(); skipws(); 1550 pipeline->_instrFetchUnitSize = get_int(); 1551 skipws(); 1552 1553 if (_curchar == ';') { 1554 next_char(); skipws(); 1555 } 1556 1557 continue; 1558 } 1559 1560 if (!strcmp(ident, "instruction_fetch_units")) { 1561 skipws(); 1562 if (_curchar != '=') { 1563 parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar); 1564 break; 1565 } 1566 1567 next_char(); skipws(); 1568 pipeline->_instrFetchUnits = get_int(); 1569 skipws(); 1570 1571 if (_curchar == ';') { 1572 next_char(); skipws(); 1573 } 1574 1575 continue; 1576 } 1577 1578 if (!strcmp(ident, "nops")) { 1579 skipws(); 1580 if (_curchar != '(') { 1581 parse_err(SYNERR, "expected `(`, found '%c'\n", _curchar); 1582 break; 1583 } 1584 1585 next_char(); skipws(); 1586 1587 while (_curchar != ')') { 1588 ident = get_ident(); 1589 if (ident == NULL) { 1590 parse_err(SYNERR, "expected identifier for nop instruction, found '%c'\n", _curchar); 1591 break; 1592 } 1593 1594 pipeline->_noplist.addName(ident); 1595 pipeline->_nopcnt++; 1596 skipws(); 1597 1598 if (_curchar == ',') { 1599 next_char(); skipws(); 1600 } 1601 } 1602 1603 next_char(); skipws(); 1604 1605 if (_curchar == ';') { 1606 next_char(); skipws(); 1607 } 1608 1609 continue; 1610 } 1611 1612 parse_err(SYNERR, "unknown specifier \"%s\"\n", ident); 1613 } 1614 1615 if ( (_curchar != '%') 1616 || ( next_char(), (_curchar != '}')) ) { 1617 parse_err(SYNERR, "expected '%}', found \"%c\"\n", _curchar); 1618 } 1619 next_char(); skipws(); 1620 1621 if (pipeline->_maxInstrsPerBundle == 0) 1622 parse_err(SYNERR, "\"max_instructions_per_bundle\" unspecified\n"); 1623 if (pipeline->_instrUnitSize == 0 && pipeline->_bundleUnitSize == 0) 1624 parse_err(SYNERR, "\"instruction_unit_size\" and \"bundle_unit_size\" unspecified\n"); 1625 if (pipeline->_instrFetchUnitSize == 0) 1626 parse_err(SYNERR, "\"instruction_fetch_unit_size\" unspecified\n"); 1627 if (pipeline->_instrFetchUnits == 0) 1628 parse_err(SYNERR, "\"instruction_fetch_units\" unspecified\n"); 1629 if (!vsi_seen) 1630 parse_err(SYNERR, "\"variable_size_instruction\" or \"fixed_size_instruction\" unspecified\n"); 1631 } 1632 else { // Done with staticly defined parts of instruction definition 1633 parse_err(SYNERR, "expected one of \"resources\", \"pipe_desc\", \"pipe_class\", found \"%s\"\n", ident); 1634 return; 1635 } 1636 skipws(); 1637 if (_curchar == ';') 1638 skipws(); 1639 } while(_curchar != '%'); 1640 1641 next_char(); 1642 if (_curchar != '}') { 1643 parse_err(SYNERR, "missing \"%}\" in pipeline definition\n"); 1644 return; 1645 } 1646 1647 next_char(); 1648 } 1649 1650 //------------------------------resource_parse---------------------------- 1651 void ADLParser::resource_parse(PipelineForm &pipeline) { 1652 ResourceForm *resource; 1653 char * ident; 1654 char * expr; 1655 unsigned mask; 1656 pipeline._rescount = 0; 1657 1658 skipws(); // Skip leading whitespace 1659 1660 if (_curchar != '(') { 1661 parse_err(SYNERR, "missing \"(\" in resource definition\n"); 1662 return; 1663 } 1664 1665 do { 1666 next_char(); // Skip "(" or "," 1667 ident = get_ident(); // Grab next identifier 1668 1669 if (ident == NULL) { 1670 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar); 1671 return; 1672 } 1673 skipws(); 1674 1675 if (_curchar != '=') { 1676 mask = (1 << pipeline._rescount++); 1677 } 1678 else { 1679 next_char(); skipws(); 1680 expr = get_ident(); // Grab next identifier 1681 if (expr == NULL) { 1682 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar); 1683 return; 1684 } 1685 resource = (ResourceForm *) pipeline._resdict[expr]; 1686 if (resource == NULL) { 1687 parse_err(SYNERR, "resource \"%s\" is not defined\n", expr); 1688 return; 1689 } 1690 mask = resource->mask(); 1691 1692 skipws(); 1693 while (_curchar == '|') { 1694 next_char(); skipws(); 1695 1696 expr = get_ident(); // Grab next identifier 1697 if (expr == NULL) { 1698 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar); 1699 return; 1700 } 1701 1702 resource = (ResourceForm *) pipeline._resdict[expr]; // Look up the value 1703 if (resource == NULL) { 1704 parse_err(SYNERR, "resource \"%s\" is not defined\n", expr); 1705 return; 1706 } 1707 1708 mask |= resource->mask(); 1709 skipws(); 1710 } 1711 } 1712 1713 resource = new ResourceForm(mask); 1714 1715 pipeline._resdict.Insert(ident, resource); 1716 pipeline._reslist.addName(ident); 1717 } while (_curchar == ','); 1718 1719 if (_curchar != ')') { 1720 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar); 1721 return; 1722 } 1723 1724 next_char(); // Skip ")" 1725 if (_curchar == ';') 1726 next_char(); // Skip ";" 1727 } 1728 1729 //------------------------------resource_parse---------------------------- 1730 void ADLParser::pipe_desc_parse(PipelineForm &pipeline) { 1731 char * ident; 1732 1733 skipws(); // Skip leading whitespace 1734 1735 if (_curchar != '(') { 1736 parse_err(SYNERR, "missing \"(\" in pipe_desc definition\n"); 1737 return; 1738 } 1739 1740 do { 1741 next_char(); // Skip "(" or "," 1742 ident = get_ident(); // Grab next identifier 1743 if (ident == NULL) { 1744 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar); 1745 return; 1746 } 1747 1748 // Add the name to the list 1749 pipeline._stages.addName(ident); 1750 pipeline._stagecnt++; 1751 1752 skipws(); 1753 } while (_curchar == ','); 1754 1755 if (_curchar != ')') { 1756 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar); 1757 return; 1758 } 1759 1760 next_char(); // Skip ")" 1761 if (_curchar == ';') 1762 next_char(); // Skip ";" 1763 } 1764 1765 //------------------------------pipe_class_parse-------------------------- 1766 void ADLParser::pipe_class_parse(PipelineForm &pipeline) { 1767 PipeClassForm *pipe_class; 1768 char * ident; 1769 char * stage; 1770 char * read_or_write; 1771 int is_write; 1772 int is_read; 1773 OperandForm *oper; 1774 1775 skipws(); // Skip leading whitespace 1776 1777 ident = get_ident(); // Grab next identifier 1778 1779 if (ident == NULL) { 1780 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar); 1781 return; 1782 } 1783 1784 // Create a record for the pipe_class 1785 pipe_class = new PipeClassForm(ident, ++pipeline._classcnt); 1786 pipeline._classdict.Insert(ident, pipe_class); 1787 pipeline._classlist.addName(ident); 1788 1789 // Then get the operands 1790 skipws(); 1791 if (_curchar != '(') { 1792 parse_err(SYNERR, "missing \"(\" in pipe_class definition\n"); 1793 } 1794 // Parse the operand list 1795 else get_oplist(pipe_class->_parameters, pipe_class->_localNames); 1796 skipws(); // Skip leading whitespace 1797 // Check for block delimiter 1798 if ( (_curchar != '%') 1799 || ( next_char(), (_curchar != '{')) ) { 1800 parse_err(SYNERR, "missing \"%{\" in pipe_class definition\n"); 1801 return; 1802 } 1803 next_char(); 1804 1805 do { 1806 ident = get_ident(); // Grab next identifier 1807 if (ident == NULL) { 1808 parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar); 1809 continue; 1810 } 1811 skipws(); 1812 1813 if (!strcmp(ident, "fixed_latency")) { 1814 skipws(); 1815 if (_curchar != '(') { 1816 parse_err(SYNERR, "missing \"(\" in latency definition\n"); 1817 return; 1818 } 1819 next_char(); skipws(); 1820 if( !isdigit(_curchar) ) { 1821 parse_err(SYNERR, "number expected for \"%c\" in latency definition\n", _curchar); 1822 return; 1823 } 1824 int fixed_latency = get_int(); 1825 skipws(); 1826 if (_curchar != ')') { 1827 parse_err(SYNERR, "missing \")\" in latency definition\n"); 1828 return; 1829 } 1830 next_char(); skipws(); 1831 if (_curchar != ';') { 1832 parse_err(SYNERR, "missing \";\" in latency definition\n"); 1833 return; 1834 } 1835 1836 pipe_class->setFixedLatency(fixed_latency); 1837 next_char(); skipws(); 1838 continue; 1839 } 1840 1841 if (!strcmp(ident, "zero_instructions") || 1842 !strcmp(ident, "no_instructions")) { 1843 skipws(); 1844 if (_curchar != ';') { 1845 parse_err(SYNERR, "missing \";\" in latency definition\n"); 1846 return; 1847 } 1848 1849 pipe_class->setInstructionCount(0); 1850 next_char(); skipws(); 1851 continue; 1852 } 1853 1854 if (!strcmp(ident, "one_instruction_with_delay_slot") || 1855 !strcmp(ident, "single_instruction_with_delay_slot")) { 1856 skipws(); 1857 if (_curchar != ';') { 1858 parse_err(SYNERR, "missing \";\" in latency definition\n"); 1859 return; 1860 } 1861 1862 pipe_class->setInstructionCount(1); 1863 pipe_class->setBranchDelay(true); 1864 next_char(); skipws(); 1865 continue; 1866 } 1867 1868 if (!strcmp(ident, "one_instruction") || 1869 !strcmp(ident, "single_instruction")) { 1870 skipws(); 1871 if (_curchar != ';') { 1872 parse_err(SYNERR, "missing \";\" in latency definition\n"); 1873 return; 1874 } 1875 1876 pipe_class->setInstructionCount(1); 1877 next_char(); skipws(); 1878 continue; 1879 } 1880 1881 if (!strcmp(ident, "instructions_in_first_bundle") || 1882 !strcmp(ident, "instruction_count")) { 1883 skipws(); 1884 1885 int number_of_instructions = 1; 1886 1887 if (_curchar != '(') { 1888 parse_err(SYNERR, "\"(\" expected at \"%c\"\n", _curchar); 1889 continue; 1890 } 1891 1892 next_char(); skipws(); 1893 number_of_instructions = get_int(); 1894 1895 skipws(); 1896 if (_curchar != ')') { 1897 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar); 1898 continue; 1899 } 1900 1901 next_char(); skipws(); 1902 if (_curchar != ';') { 1903 parse_err(SYNERR, "missing \";\" in latency definition\n"); 1904 return; 1905 } 1906 1907 pipe_class->setInstructionCount(number_of_instructions); 1908 next_char(); skipws(); 1909 continue; 1910 } 1911 1912 if (!strcmp(ident, "multiple_bundles")) { 1913 skipws(); 1914 if (_curchar != ';') { 1915 parse_err(SYNERR, "missing \";\" after multiple bundles\n"); 1916 return; 1917 } 1918 1919 pipe_class->setMultipleBundles(true); 1920 next_char(); skipws(); 1921 continue; 1922 } 1923 1924 if (!strcmp(ident, "has_delay_slot")) { 1925 skipws(); 1926 if (_curchar != ';') { 1927 parse_err(SYNERR, "missing \";\" after \"has_delay_slot\"\n"); 1928 return; 1929 } 1930 1931 pipe_class->setBranchDelay(true); 1932 next_char(); skipws(); 1933 continue; 1934 } 1935 1936 if (!strcmp(ident, "force_serialization")) { 1937 skipws(); 1938 if (_curchar != ';') { 1939 parse_err(SYNERR, "missing \";\" after \"force_serialization\"\n"); 1940 return; 1941 } 1942 1943 pipe_class->setForceSerialization(true); 1944 next_char(); skipws(); 1945 continue; 1946 } 1947 1948 if (!strcmp(ident, "may_have_no_code")) { 1949 skipws(); 1950 if (_curchar != ';') { 1951 parse_err(SYNERR, "missing \";\" after \"may_have_no_code\"\n"); 1952 return; 1953 } 1954 1955 pipe_class->setMayHaveNoCode(true); 1956 next_char(); skipws(); 1957 continue; 1958 } 1959 1960 const Form *parm = pipe_class->_localNames[ident]; 1961 if (parm != NULL) { 1962 oper = parm->is_operand(); 1963 if (oper == NULL && !parm->is_opclass()) { 1964 parse_err(SYNERR, "operand name expected at %s\n", ident); 1965 continue; 1966 } 1967 1968 if (_curchar != ':') { 1969 parse_err(SYNERR, "\":\" expected at \"%c\"\n", _curchar); 1970 continue; 1971 } 1972 next_char(); skipws(); 1973 stage = get_ident(); 1974 if (stage == NULL) { 1975 parse_err(SYNERR, "pipeline stage identifier expected at \"%c\"\n", _curchar); 1976 continue; 1977 } 1978 1979 skipws(); 1980 if (_curchar != '(') { 1981 parse_err(SYNERR, "\"(\" expected at \"%c\"\n", _curchar); 1982 continue; 1983 } 1984 1985 next_char(); 1986 read_or_write = get_ident(); 1987 if (read_or_write == NULL) { 1988 parse_err(SYNERR, "\"read\" or \"write\" expected at \"%c\"\n", _curchar); 1989 continue; 1990 } 1991 1992 is_read = strcmp(read_or_write, "read") == 0; 1993 is_write = strcmp(read_or_write, "write") == 0; 1994 if (!is_read && !is_write) { 1995 parse_err(SYNERR, "\"read\" or \"write\" expected at \"%c\"\n", _curchar); 1996 continue; 1997 } 1998 1999 skipws(); 2000 if (_curchar != ')') { 2001 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar); 2002 continue; 2003 } 2004 2005 next_char(); skipws(); 2006 int more_instrs = 0; 2007 if (_curchar == '+') { 2008 next_char(); skipws(); 2009 if (_curchar < '0' || _curchar > '9') { 2010 parse_err(SYNERR, "<number> expected at \"%c\"\n", _curchar); 2011 continue; 2012 } 2013 while (_curchar >= '0' && _curchar <= '9') { 2014 more_instrs *= 10; 2015 more_instrs += _curchar - '0'; 2016 next_char(); 2017 } 2018 skipws(); 2019 } 2020 2021 PipeClassOperandForm *pipe_operand = new PipeClassOperandForm(stage, is_write, more_instrs); 2022 pipe_class->_localUsage.Insert(ident, pipe_operand); 2023 2024 if (_curchar == '%') 2025 continue; 2026 2027 if (_curchar != ';') { 2028 parse_err(SYNERR, "\";\" expected at \"%c\"\n", _curchar); 2029 continue; 2030 } 2031 next_char(); skipws(); 2032 continue; 2033 } 2034 2035 // Scan for Resource Specifier 2036 const Form *res = pipeline._resdict[ident]; 2037 if (res != NULL) { 2038 int cyclecnt = 1; 2039 if (_curchar != ':') { 2040 parse_err(SYNERR, "\":\" expected at \"%c\"\n", _curchar); 2041 continue; 2042 } 2043 next_char(); skipws(); 2044 stage = get_ident(); 2045 if (stage == NULL) { 2046 parse_err(SYNERR, "pipeline stage identifier expected at \"%c\"\n", _curchar); 2047 continue; 2048 } 2049 2050 skipws(); 2051 if (_curchar == '(') { 2052 next_char(); 2053 cyclecnt = get_int(); 2054 2055 skipws(); 2056 if (_curchar != ')') { 2057 parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar); 2058 continue; 2059 } 2060 2061 next_char(); skipws(); 2062 } 2063 2064 PipeClassResourceForm *resource = new PipeClassResourceForm(ident, stage, cyclecnt); 2065 int stagenum = pipeline._stages.index(stage); 2066 if (pipeline._maxcycleused < (stagenum+cyclecnt)) 2067 pipeline._maxcycleused = (stagenum+cyclecnt); 2068 pipe_class->_resUsage.addForm(resource); 2069 2070 if (_curchar == '%') 2071 continue; 2072 2073 if (_curchar != ';') { 2074 parse_err(SYNERR, "\";\" expected at \"%c\"\n", _curchar); 2075 continue; 2076 } 2077 next_char(); skipws(); 2078 continue; 2079 } 2080 2081 parse_err(SYNERR, "resource expected at \"%s\"\n", ident); 2082 return; 2083 } while(_curchar != '%'); 2084 2085 next_char(); 2086 if (_curchar != '}') { 2087 parse_err(SYNERR, "missing \"%}\" in pipe_class definition\n"); 2088 return; 2089 } 2090 2091 next_char(); 2092 } 2093 2094 //------------------------------peep_parse------------------------------------- 2095 void ADLParser::peep_parse(void) { 2096 Peephole *peep; // Pointer to current peephole rule form 2097 char *desc = NULL; // String representation of rule 2098 2099 skipws(); // Skip leading whitespace 2100 2101 peep = new Peephole(); // Build new Peephole object 2102 // Check for open block sequence 2103 skipws(); // Skip leading whitespace 2104 if (_curchar == '%' && *(_ptr+1) == '{') { 2105 next_char(); next_char(); // Skip "%{" 2106 skipws(); 2107 while (_curchar != '%' && *(_ptr+1) != '}') { 2108 char *token = get_ident(); 2109 if (token == NULL) { 2110 parse_err(SYNERR, "missing identifier inside peephole rule.\n"); 2111 return; 2112 } 2113 // check for legal subsections of peephole rule 2114 if (strcmp(token,"peepmatch")==0) { 2115 peep_match_parse(*peep); } 2116 else if (strcmp(token,"peepconstraint")==0) { 2117 peep_constraint_parse(*peep); } 2118 else if (strcmp(token,"peepreplace")==0) { 2119 peep_replace_parse(*peep); } 2120 else { 2121 parse_err(SYNERR, "expected peepmatch, peepconstraint, or peepreplace for identifier %s.\n", token); 2122 } 2123 skipws(); 2124 } 2125 } 2126 else { 2127 parse_err(SYNERR, "Missing %%{ ... %%} block after peephole keyword.\n"); 2128 return; 2129 } 2130 next_char(); // Skip past '%' 2131 next_char(); // Skip past '}' 2132 } 2133 2134 // ******************** Private Level 2 Parse Functions ******************** 2135 //------------------------------constraint_parse------------------------------ 2136 Constraint *ADLParser::constraint_parse(void) { 2137 char *func; 2138 char *arg; 2139 2140 // Check for constraint expression 2141 skipws(); 2142 if (_curchar != '(') { 2143 parse_err(SYNERR, "missing constraint expression, (...)\n"); 2144 return NULL; 2145 } 2146 next_char(); // Skip past '(' 2147 2148 // Get constraint function 2149 skipws(); 2150 func = get_ident(); 2151 if (func == NULL) { 2152 parse_err(SYNERR, "missing function in constraint expression.\n"); 2153 return NULL; 2154 } 2155 if (strcmp(func,"ALLOC_IN_RC")==0 2156 || strcmp(func,"IS_R_CLASS")==0) { 2157 // Check for '(' before argument 2158 skipws(); 2159 if (_curchar != '(') { 2160 parse_err(SYNERR, "missing '(' for constraint function's argument.\n"); 2161 return NULL; 2162 } 2163 next_char(); 2164 2165 // Get it's argument 2166 skipws(); 2167 arg = get_ident(); 2168 if (arg == NULL) { 2169 parse_err(SYNERR, "missing argument for constraint function %s\n",func); 2170 return NULL; 2171 } 2172 // Check for ')' after argument 2173 skipws(); 2174 if (_curchar != ')') { 2175 parse_err(SYNERR, "missing ')' after constraint function argument %s\n",arg); 2176 return NULL; 2177 } 2178 next_char(); 2179 } else { 2180 parse_err(SYNERR, "Invalid constraint function %s\n",func); 2181 return NULL; 2182 } 2183 2184 // Check for closing paren and ';' 2185 skipws(); 2186 if (_curchar != ')') { 2187 parse_err(SYNERR, "Missing ')' for constraint function %s\n",func); 2188 return NULL; 2189 } 2190 next_char(); 2191 skipws(); 2192 if (_curchar != ';') { 2193 parse_err(SYNERR, "Missing ';' after constraint.\n"); 2194 return NULL; 2195 } 2196 next_char(); 2197 2198 // Create new "Constraint" 2199 Constraint *constraint = new Constraint(func,arg); 2200 return constraint; 2201 } 2202 2203 //------------------------------constr_parse----------------------------------- 2204 ConstructRule *ADLParser::construct_parse(void) { 2205 return NULL; 2206 } 2207 2208 2209 //------------------------------reg_def_parse---------------------------------- 2210 void ADLParser::reg_def_parse(void) { 2211 char *rname; // Name of register being defined 2212 2213 // Get register name 2214 skipws(); // Skip whitespace 2215 rname = get_ident(); 2216 if (rname == NULL) { 2217 parse_err(SYNERR, "missing register name after reg_def\n"); 2218 return; 2219 } 2220 2221 // Check for definition of register calling convention (save on call, ...), 2222 // register save type, and register encoding value. 2223 skipws(); 2224 char *callconv = NULL; 2225 char *c_conv = NULL; 2226 char *idealtype = NULL; 2227 char *encoding = NULL; 2228 char *concrete = NULL; 2229 if (_curchar == '(') { 2230 next_char(); 2231 callconv = get_ident(); 2232 // Parse the internal calling convention, must be NS, SOC, SOE, or AS. 2233 if (callconv == NULL) { 2234 parse_err(SYNERR, "missing register calling convention value\n"); 2235 return; 2236 } 2237 if(strcmp(callconv, "SOC") && strcmp(callconv,"SOE") && 2238 strcmp(callconv, "NS") && strcmp(callconv, "AS")) { 2239 parse_err(SYNERR, "invalid value for register calling convention\n"); 2240 } 2241 skipws(); 2242 if (_curchar != ',') { 2243 parse_err(SYNERR, "missing comma in register definition statement\n"); 2244 return; 2245 } 2246 next_char(); 2247 2248 // Parse the native calling convention, must be NS, SOC, SOE, AS 2249 c_conv = get_ident(); 2250 if (c_conv == NULL) { 2251 parse_err(SYNERR, "missing register native calling convention value\n"); 2252 return; 2253 } 2254 if(strcmp(c_conv, "SOC") && strcmp(c_conv,"SOE") && 2255 strcmp(c_conv, "NS") && strcmp(c_conv, "AS")) { 2256 parse_err(SYNERR, "invalid value for register calling convention\n"); 2257 } 2258 skipws(); 2259 if (_curchar != ',') { 2260 parse_err(SYNERR, "missing comma in register definition statement\n"); 2261 return; 2262 } 2263 next_char(); 2264 skipws(); 2265 2266 // Parse the ideal save type 2267 idealtype = get_ident(); 2268 if (idealtype == NULL) { 2269 parse_err(SYNERR, "missing register save type value\n"); 2270 return; 2271 } 2272 skipws(); 2273 if (_curchar != ',') { 2274 parse_err(SYNERR, "missing comma in register definition statement\n"); 2275 return; 2276 } 2277 next_char(); 2278 skipws(); 2279 2280 // Parse the encoding value 2281 encoding = get_expr("encoding", ","); 2282 if (encoding == NULL) { 2283 parse_err(SYNERR, "missing register encoding value\n"); 2284 return; 2285 } 2286 trim(encoding); 2287 if (_curchar != ',') { 2288 parse_err(SYNERR, "missing comma in register definition statement\n"); 2289 return; 2290 } 2291 next_char(); 2292 skipws(); 2293 // Parse the concrete name type 2294 // concrete = get_ident(); 2295 concrete = get_expr("concrete", ")"); 2296 if (concrete == NULL) { 2297 parse_err(SYNERR, "missing vm register name value\n"); 2298 return; 2299 } 2300 2301 if (_curchar != ')') { 2302 parse_err(SYNERR, "missing ')' in register definition statement\n"); 2303 return; 2304 } 2305 next_char(); 2306 } 2307 2308 // Check for closing ';' 2309 skipws(); 2310 if (_curchar != ';') { 2311 parse_err(SYNERR, "missing ';' after reg_def\n"); 2312 return; 2313 } 2314 next_char(); // move past ';' 2315 2316 // Debug Stuff 2317 if (_AD._adl_debug > 1) { 2318 fprintf(stderr,"Register Definition: %s ( %s, %s %s )\n", rname, 2319 (callconv ? callconv : ""), (c_conv ? c_conv : ""), concrete); 2320 } 2321 2322 // Record new register definition. 2323 _AD._register->addRegDef(rname, callconv, c_conv, idealtype, encoding, concrete); 2324 return; 2325 } 2326 2327 //------------------------------reg_class_parse-------------------------------- 2328 void ADLParser::reg_class_parse(void) { 2329 char *cname; // Name of register class being defined 2330 2331 // Get register class name 2332 skipws(); // Skip leading whitespace 2333 cname = get_ident(); 2334 if (cname == NULL) { 2335 parse_err(SYNERR, "missing register class name after 'reg_class'\n"); 2336 return; 2337 } 2338 // Debug Stuff 2339 if (_AD._adl_debug >1) fprintf(stderr,"Register Class: %s\n", cname); 2340 2341 RegClass *reg_class = _AD._register->addRegClass(cname); 2342 2343 // Collect registers in class 2344 skipws(); 2345 if (_curchar == '(') { 2346 next_char(); // Skip '(' 2347 skipws(); 2348 while (_curchar != ')') { 2349 char *rname = get_ident(); 2350 if (rname==NULL) { 2351 parse_err(SYNERR, "missing identifier inside reg_class list.\n"); 2352 return; 2353 } 2354 RegDef *regDef = _AD._register->getRegDef(rname); 2355 if (!regDef) { 2356 parse_err(SEMERR, "unknown identifier %s inside reg_class list.\n", rname); 2357 } else { 2358 reg_class->addReg(regDef); // add regDef to regClass 2359 } 2360 2361 // Check for ',' and position to next token. 2362 skipws(); 2363 if (_curchar == ',') { 2364 next_char(); // Skip trailing ',' 2365 skipws(); 2366 } 2367 } 2368 next_char(); // Skip closing ')' 2369 } 2370 2371 // Check for terminating ';' 2372 skipws(); 2373 if (_curchar != ';') { 2374 parse_err(SYNERR, "missing ';' at end of reg_class definition.\n"); 2375 return; 2376 } 2377 next_char(); // Skip trailing ';' 2378 2379 // Check RegClass size, must be <= 32 registers in class. 2380 2381 return; 2382 } 2383 2384 //------------------------------alloc_class_parse------------------------------ 2385 void ADLParser::alloc_class_parse(void) { 2386 char *name; // Name of allocation class being defined 2387 2388 // Get allocation class name 2389 skipws(); // Skip leading whitespace 2390 name = get_ident(); 2391 if (name == NULL) { 2392 parse_err(SYNERR, "missing allocation class name after 'reg_class'\n"); 2393 return; 2394 } 2395 // Debug Stuff 2396 if (_AD._adl_debug >1) fprintf(stderr,"Allocation Class: %s\n", name); 2397 2398 AllocClass *alloc_class = _AD._register->addAllocClass(name); 2399 2400 // Collect registers in class 2401 skipws(); 2402 if (_curchar == '(') { 2403 next_char(); // Skip '(' 2404 skipws(); 2405 while (_curchar != ')') { 2406 char *rname = get_ident(); 2407 if (rname==NULL) { 2408 parse_err(SYNERR, "missing identifier inside reg_class list.\n"); 2409 return; 2410 } 2411 // Check if name is a RegDef 2412 RegDef *regDef = _AD._register->getRegDef(rname); 2413 if (regDef) { 2414 alloc_class->addReg(regDef); // add regDef to allocClass 2415 } else { 2416 2417 // name must be a RegDef or a RegClass 2418 parse_err(SYNERR, "name %s should be a previously defined reg_def.\n", rname); 2419 return; 2420 } 2421 2422 // Check for ',' and position to next token. 2423 skipws(); 2424 if (_curchar == ',') { 2425 next_char(); // Skip trailing ',' 2426 skipws(); 2427 } 2428 } 2429 next_char(); // Skip closing ')' 2430 } 2431 2432 // Check for terminating ';' 2433 skipws(); 2434 if (_curchar != ';') { 2435 parse_err(SYNERR, "missing ';' at end of reg_class definition.\n"); 2436 return; 2437 } 2438 next_char(); // Skip trailing ';' 2439 2440 return; 2441 } 2442 2443 //------------------------------peep_match_child_parse------------------------- 2444 InstructForm *ADLParser::peep_match_child_parse(PeepMatch &match, int parent, int &position, int input){ 2445 char *token = NULL; 2446 int lparen = 0; // keep track of parenthesis nesting depth 2447 int rparen = 0; // position of instruction at this depth 2448 InstructForm *inst_seen = NULL; 2449 InstructForm *child_seen = NULL; 2450 2451 // Walk the match tree, 2452 // Record <parent, position, instruction name, input position> 2453 while ( lparen >= rparen ) { 2454 skipws(); 2455 // Left paren signals start of an input, collect with recursive call 2456 if (_curchar == '(') { 2457 ++lparen; 2458 next_char(); 2459 child_seen = peep_match_child_parse(match, parent, position, rparen); 2460 } 2461 // Right paren signals end of an input, may be more 2462 else if (_curchar == ')') { 2463 ++rparen; 2464 if( rparen == lparen ) { // IF rparen matches an lparen I've seen 2465 next_char(); // move past ')' 2466 } else { // ELSE leave ')' for parent 2467 assert( rparen == lparen + 1, "Should only see one extra ')'"); 2468 // if an instruction was not specified for this paren-pair 2469 if( ! inst_seen ) { // record signal entry 2470 match.add_instruction( parent, position, NameList::_signal, input ); 2471 ++position; 2472 } 2473 // ++input; // TEMPORARY 2474 return inst_seen; 2475 } 2476 } 2477 // if no parens, then check for instruction name 2478 // This instruction is the parent of a sub-tree 2479 else if ((token = get_ident_dup()) != NULL) { 2480 const Form *form = _AD._globalNames[token]; 2481 if (form) { 2482 InstructForm *inst = form->is_instruction(); 2483 // Record the first instruction at this level 2484 if( inst_seen == NULL ) { 2485 inst_seen = inst; 2486 } 2487 if (inst) { 2488 match.add_instruction( parent, position, token, input ); 2489 parent = position; 2490 ++position; 2491 } else { 2492 parse_err(SYNERR, "instruction name expected at identifier %s.\n", 2493 token); 2494 return inst_seen; 2495 } 2496 } 2497 else { 2498 parse_err(SYNERR, "missing identifier in peepmatch rule.\n"); 2499 return NULL; 2500 } 2501 } 2502 else { 2503 parse_err(SYNERR, "missing identifier in peepmatch rule.\n"); 2504 return NULL; 2505 } 2506 2507 } // end while 2508 2509 assert( false, "ShouldNotReachHere();"); 2510 return NULL; 2511 } 2512 2513 //------------------------------peep_match_parse------------------------------- 2514 // Syntax for a peepmatch rule 2515 // 2516 // peepmatch ( root_instr_name [(instruction subtree)] [,(instruction subtree)]* ); 2517 // 2518 void ADLParser::peep_match_parse(Peephole &peep) { 2519 2520 skipws(); 2521 // Check the structure of the rule 2522 // Check for open paren 2523 if (_curchar != '(') { 2524 parse_err(SYNERR, "missing '(' at start of peepmatch rule.\n"); 2525 return; 2526 } 2527 next_char(); // skip '(' 2528 2529 // Construct PeepMatch and parse the peepmatch rule. 2530 PeepMatch *match = new PeepMatch(_ptr); 2531 int parent = -1; // parent of root 2532 int position = 0; // zero-based positions 2533 int input = 0; // input position in parent's operands 2534 InstructForm *root= peep_match_child_parse( *match, parent, position, input); 2535 if( root == NULL ) { 2536 parse_err(SYNERR, "missing instruction-name at start of peepmatch.\n"); 2537 return; 2538 } 2539 2540 if( _curchar != ')' ) { 2541 parse_err(SYNERR, "missing ')' at end of peepmatch.\n"); 2542 return; 2543 } 2544 next_char(); // skip ')' 2545 2546 // Check for closing semicolon 2547 skipws(); 2548 if( _curchar != ';' ) { 2549 parse_err(SYNERR, "missing ';' at end of peepmatch.\n"); 2550 return; 2551 } 2552 next_char(); // skip ';' 2553 2554 // Store match into peep, and store peep into instruction 2555 peep.add_match(match); 2556 root->append_peephole(&peep); 2557 } 2558 2559 //------------------------------peep_constraint_parse-------------------------- 2560 // Syntax for a peepconstraint rule 2561 // A parenthesized list of relations between operands in peepmatch subtree 2562 // 2563 // peepconstraint %{ 2564 // (instruction_number.operand_name 2565 // relational_op 2566 // instruction_number.operand_name OR register_name 2567 // [, ...] ); 2568 // 2569 // // instruction numbers are zero-based using topological order in peepmatch 2570 // 2571 void ADLParser::peep_constraint_parse(Peephole &peep) { 2572 2573 skipws(); 2574 // Check the structure of the rule 2575 // Check for open paren 2576 if (_curchar != '(') { 2577 parse_err(SYNERR, "missing '(' at start of peepconstraint rule.\n"); 2578 return; 2579 } 2580 else { 2581 next_char(); // Skip '(' 2582 } 2583 2584 // Check for a constraint 2585 skipws(); 2586 while( _curchar != ')' ) { 2587 // Get information on the left instruction and its operand 2588 // left-instructions's number 2589 int left_inst = get_int(); 2590 // Left-instruction's operand 2591 skipws(); 2592 if( _curchar != '.' ) { 2593 parse_err(SYNERR, "missing '.' in peepconstraint after instruction number.\n"); 2594 return; 2595 } 2596 next_char(); // Skip '.' 2597 char *left_op = get_ident_dup(); 2598 2599 skipws(); 2600 // Collect relational operator 2601 char *relation = get_relation_dup(); 2602 2603 skipws(); 2604 // Get information on the right instruction and its operand 2605 int right_inst; // Right-instructions's number 2606 if( isdigit(_curchar) ) { 2607 right_inst = get_int(); 2608 // Right-instruction's operand 2609 skipws(); 2610 if( _curchar != '.' ) { 2611 parse_err(SYNERR, "missing '.' in peepconstraint after instruction number.\n"); 2612 return; 2613 } 2614 next_char(); // Skip '.' 2615 } else { 2616 right_inst = -1; // Flag as being a register constraint 2617 } 2618 2619 char *right_op = get_ident_dup(); 2620 2621 // Construct the next PeepConstraint 2622 PeepConstraint *constraint = new PeepConstraint( left_inst, left_op, 2623 relation, 2624 right_inst, right_op ); 2625 // And append it to the list for this peephole rule 2626 peep.append_constraint( constraint ); 2627 2628 // Check for another constraint, or end of rule 2629 skipws(); 2630 if( _curchar == ',' ) { 2631 next_char(); // Skip ',' 2632 skipws(); 2633 } 2634 else if( _curchar != ')' ) { 2635 parse_err(SYNERR, "expected ',' or ')' after peephole constraint.\n"); 2636 return; 2637 } 2638 } // end while( processing constraints ) 2639 next_char(); // Skip ')' 2640 2641 // Check for terminating ';' 2642 skipws(); 2643 if (_curchar != ';') { 2644 parse_err(SYNERR, "missing ';' at end of peepconstraint.\n"); 2645 return; 2646 } 2647 next_char(); // Skip trailing ';' 2648 } 2649 2650 2651 //------------------------------peep_replace_parse----------------------------- 2652 // Syntax for a peepreplace rule 2653 // root instruction name followed by a 2654 // parenthesized list of whitespace separated instruction.operand specifiers 2655 // 2656 // peepreplace ( instr_name ( [instruction_number.operand_name]* ) ); 2657 // 2658 // 2659 void ADLParser::peep_replace_parse(Peephole &peep) { 2660 int lparen = 0; // keep track of parenthesis nesting depth 2661 int rparen = 0; // keep track of parenthesis nesting depth 2662 int icount = 0; // count of instructions in rule for naming 2663 char *str = NULL; 2664 char *token = NULL; 2665 2666 skipws(); 2667 // Check for open paren 2668 if (_curchar != '(') { 2669 parse_err(SYNERR, "missing '(' at start of peepreplace rule.\n"); 2670 return; 2671 } 2672 else { 2673 lparen++; 2674 next_char(); 2675 } 2676 2677 // Check for root instruction 2678 char *inst = get_ident_dup(); 2679 const Form *form = _AD._globalNames[inst]; 2680 if( form == NULL || form->is_instruction() == NULL ) { 2681 parse_err(SYNERR, "Instruction name expected at start of peepreplace.\n"); 2682 return; 2683 } 2684 2685 // Store string representation of rule into replace 2686 PeepReplace *replace = new PeepReplace(str); 2687 replace->add_instruction( inst ); 2688 2689 skipws(); 2690 // Start of root's operand-list 2691 if (_curchar != '(') { 2692 parse_err(SYNERR, "missing '(' at peepreplace root's operand-list.\n"); 2693 return; 2694 } 2695 else { 2696 lparen++; 2697 next_char(); 2698 } 2699 2700 skipws(); 2701 // Get the list of operands 2702 while( _curchar != ')' ) { 2703 // Get information on an instruction and its operand 2704 // instructions's number 2705 int inst_num = get_int(); 2706 // Left-instruction's operand 2707 skipws(); 2708 if( _curchar != '.' ) { 2709 parse_err(SYNERR, "missing '.' in peepreplace after instruction number.\n"); 2710 return; 2711 } 2712 next_char(); // Skip '.' 2713 char *inst_op = get_ident_dup(); 2714 if( inst_op == NULL ) { 2715 parse_err(SYNERR, "missing operand identifier in peepreplace.\n"); 2716 return; 2717 } 2718 2719 // Record this operand's position in peepmatch 2720 replace->add_operand( inst_num, inst_op ); 2721 skipws(); 2722 } 2723 2724 // Check for the end of operands list 2725 skipws(); 2726 assert( _curchar == ')', "While loop should have advanced to ')'."); 2727 next_char(); // Skip ')' 2728 2729 skipws(); 2730 // Check for end of peepreplace 2731 if( _curchar != ')' ) { 2732 parse_err(SYNERR, "missing ')' at end of peepmatch.\n"); 2733 parse_err(SYNERR, "Support one replacement instruction.\n"); 2734 return; 2735 } 2736 next_char(); // Skip ')' 2737 2738 // Check for closing semicolon 2739 skipws(); 2740 if( _curchar != ';' ) { 2741 parse_err(SYNERR, "missing ';' at end of peepreplace.\n"); 2742 return; 2743 } 2744 next_char(); // skip ';' 2745 2746 // Store replace into peep 2747 peep.add_replace( replace ); 2748 } 2749 2750 //------------------------------pred_parse------------------------------------- 2751 Predicate *ADLParser::pred_parse(void) { 2752 Predicate *predicate; // Predicate class for operand 2753 char *rule = NULL; // String representation of predicate 2754 2755 skipws(); // Skip leading whitespace 2756 int line = linenum(); 2757 if ( (rule = get_paren_expr("pred expression", true)) == NULL ) { 2758 parse_err(SYNERR, "incorrect or missing expression for 'predicate'\n"); 2759 return NULL; 2760 } 2761 // Debug Stuff 2762 if (_AD._adl_debug > 1) fprintf(stderr,"Predicate: %s\n", rule); 2763 if (_curchar != ';') { 2764 parse_err(SYNERR, "missing ';' in predicate definition\n"); 2765 return NULL; 2766 } 2767 next_char(); // Point after the terminator 2768 2769 predicate = new Predicate(rule); // Build new predicate object 2770 skipws(); 2771 return predicate; 2772 } 2773 2774 2775 //------------------------------ins_encode_parse_block------------------------- 2776 // Parse the block form of ins_encode. See ins_encode_parse for more details 2777 InsEncode *ADLParser::ins_encode_parse_block(InstructForm &inst) { 2778 // Create a new encoding name based on the name of the instruction 2779 // definition, which should be unique. 2780 const char * prefix = "__enc_"; 2781 char* ec_name = (char*)malloc(strlen(inst._ident) + strlen(prefix) + 1); 2782 sprintf(ec_name, "%s%s", prefix, inst._ident); 2783 2784 assert(_AD._encode->encClass(ec_name) == NULL, "shouldn't already exist"); 2785 EncClass *encoding = _AD._encode->add_EncClass(ec_name); 2786 encoding->_linenum = linenum(); 2787 2788 // synthesize the arguments list for the enc_class from the 2789 // arguments to the instruct definition. 2790 const char * param = NULL; 2791 inst._parameters.reset(); 2792 while ((param = inst._parameters.iter()) != NULL) { 2793 OperandForm *opForm = (OperandForm*)inst._localNames[param]; 2794 encoding->add_parameter(opForm->_ident, param); 2795 } 2796 2797 // Add the prologue to create the MacroAssembler 2798 encoding->add_code("\n" 2799 " // Define a MacroAssembler instance for use by the encoding. The\n" 2800 " // name is chosen to match the __ idiom used for assembly in other\n" 2801 " // parts of hotspot and assumes the existence of the standard\n" 2802 " // #define __ _masm.\n" 2803 " MacroAssembler _masm(&cbuf);\n"); 2804 2805 // Parse the following %{ }% block 2806 enc_class_parse_block(encoding, ec_name); 2807 2808 // Build an encoding rule which invokes the encoding rule we just 2809 // created, passing all arguments that we received. 2810 InsEncode *encrule = new InsEncode(); // Encode class for instruction 2811 NameAndList *params = encrule->add_encode(ec_name); 2812 inst._parameters.reset(); 2813 while ((param = inst._parameters.iter()) != NULL) { 2814 params->add_entry(param); 2815 } 2816 2817 return encrule; 2818 } 2819 2820 2821 //------------------------------ins_encode_parse------------------------------- 2822 // Encode rules have the form 2823 // ins_encode( encode_class_name(parameter_list), ... ); 2824 // 2825 // The "encode_class_name" must be defined in the encode section 2826 // The parameter list contains $names that are locals. 2827 // 2828 // Alternatively it can be written like this: 2829 // 2830 // ins_encode %{ 2831 // ... // body 2832 // %} 2833 // 2834 // which synthesizes a new encoding class taking the same arguments as 2835 // the InstructForm, and automatically prefixes the definition with: 2836 // 2837 // MacroAssembler masm(&cbuf);\n"); 2838 // 2839 // making it more compact to take advantage of the MacroAssembler and 2840 // placing the assembly closer to it's use by instructions. 2841 InsEncode *ADLParser::ins_encode_parse(InstructForm &inst) { 2842 2843 // Parse encode class name 2844 skipws(); // Skip whitespace 2845 if (_curchar != '(') { 2846 // Check for ins_encode %{ form 2847 if ((_curchar == '%') && (*(_ptr+1) == '{')) { 2848 next_char(); // Skip '%' 2849 next_char(); // Skip '{' 2850 2851 // Parse the block form of ins_encode 2852 return ins_encode_parse_block(inst); 2853 } 2854 2855 parse_err(SYNERR, "missing '%%{' or '(' in ins_encode definition\n"); 2856 return NULL; 2857 } 2858 next_char(); // move past '(' 2859 skipws(); 2860 2861 InsEncode *encrule = new InsEncode(); // Encode class for instruction 2862 encrule->_linenum = linenum(); 2863 char *ec_name = NULL; // String representation of encode rule 2864 // identifier is optional. 2865 while (_curchar != ')') { 2866 ec_name = get_ident(); 2867 if (ec_name == NULL) { 2868 parse_err(SYNERR, "Invalid encode class name after 'ins_encode('.\n"); 2869 return NULL; 2870 } 2871 // Check that encoding is defined in the encode section 2872 EncClass *encode_class = _AD._encode->encClass(ec_name); 2873 if (encode_class == NULL) { 2874 // Like to defer checking these till later... 2875 // parse_err(WARN, "Using an undefined encode class '%s' in 'ins_encode'.\n", ec_name); 2876 } 2877 2878 // Get list for encode method's parameters 2879 NameAndList *params = encrule->add_encode(ec_name); 2880 2881 // Parse the parameters to this encode method. 2882 skipws(); 2883 if ( _curchar == '(' ) { 2884 next_char(); // move past '(' for parameters 2885 2886 // Parse the encode method's parameters 2887 while (_curchar != ')') { 2888 char *param = get_ident_or_literal_constant("encoding operand"); 2889 if ( param != NULL ) { 2890 // Found a parameter: 2891 // Check it is a local name, add it to the list, then check for more 2892 // New: allow hex constants as parameters to an encode method. 2893 // New: allow parenthesized expressions as parameters. 2894 // New: allow "primary", "secondary", "tertiary" as parameters. 2895 // New: allow user-defined register name as parameter 2896 if ( (inst._localNames[param] == NULL) && 2897 !ADLParser::is_literal_constant(param) && 2898 (Opcode::as_opcode_type(param) == Opcode::NOT_AN_OPCODE) && 2899 ((_AD._register == NULL ) || (_AD._register->getRegDef(param) == NULL)) ) { 2900 parse_err(SYNERR, "Using non-locally defined parameter %s for encoding %s.\n", param, ec_name); 2901 return NULL; 2902 } 2903 params->add_entry(param); 2904 2905 skipws(); 2906 if (_curchar == ',' ) { 2907 // More parameters to come 2908 next_char(); // move past ',' between parameters 2909 skipws(); // Skip to next parameter 2910 } 2911 else if (_curchar == ')') { 2912 // Done with parameter list 2913 } 2914 else { 2915 // Only ',' or ')' are valid after a parameter name 2916 parse_err(SYNERR, "expected ',' or ')' after parameter %s.\n", 2917 ec_name); 2918 return NULL; 2919 } 2920 2921 } else { 2922 skipws(); 2923 // Did not find a parameter 2924 if (_curchar == ',') { 2925 parse_err(SYNERR, "Expected encode parameter before ',' in encoding %s.\n", ec_name); 2926 return NULL; 2927 } 2928 if (_curchar != ')') { 2929 parse_err(SYNERR, "Expected ')' after encode parameters.\n"); 2930 return NULL; 2931 } 2932 } 2933 } // WHILE loop collecting parameters 2934 next_char(); // move past ')' at end of parameters 2935 } // done with parameter list for encoding 2936 2937 // Check for ',' or ')' after encoding 2938 skipws(); // move to character after parameters 2939 if ( _curchar == ',' ) { 2940 // Found a ',' 2941 next_char(); // move past ',' between encode methods 2942 skipws(); 2943 } 2944 else if ( _curchar != ')' ) { 2945 // If not a ',' then only a ')' is allowed 2946 parse_err(SYNERR, "Expected ')' after encoding %s.\n", ec_name); 2947 return NULL; 2948 } 2949 2950 // Check for ',' separating parameters 2951 // if ( _curchar != ',' && _curchar != ')' ) { 2952 // parse_err(SYNERR, "expected ',' or ')' after encode method inside ins_encode.\n"); 2953 // return NULL; 2954 // } 2955 2956 } // done parsing ins_encode methods and their parameters 2957 if (_curchar != ')') { 2958 parse_err(SYNERR, "Missing ')' at end of ins_encode description.\n"); 2959 return NULL; 2960 } 2961 next_char(); // move past ')' 2962 skipws(); // Skip leading whitespace 2963 2964 if ( _curchar != ';' ) { 2965 parse_err(SYNERR, "Missing ';' at end of ins_encode.\n"); 2966 return NULL; 2967 } 2968 next_char(); // move past ';' 2969 skipws(); // be friendly to oper_parse() 2970 2971 // Debug Stuff 2972 if (_AD._adl_debug > 1) fprintf(stderr,"Instruction Encode: %s\n", ec_name); 2973 2974 return encrule; 2975 } 2976 2977 2978 //------------------------------size_parse----------------------------------- 2979 char* ADLParser::size_parse(InstructForm *instr) { 2980 char* sizeOfInstr = NULL; 2981 2982 // Get value of the instruction's size 2983 skipws(); 2984 2985 // Parse size 2986 sizeOfInstr = get_paren_expr("size expression"); 2987 if (sizeOfInstr == NULL) { 2988 parse_err(SYNERR, "size of opcode expected at %c\n", _curchar); 2989 return NULL; 2990 } 2991 2992 skipws(); 2993 2994 // Check for terminator 2995 if (_curchar != ';') { 2996 parse_err(SYNERR, "missing ';' in ins_attrib definition\n"); 2997 return NULL; 2998 } 2999 next_char(); // Advance past the ';' 3000 skipws(); // necessary for instr_parse() 3001 3002 // Debug Stuff 3003 if (_AD._adl_debug > 1) { 3004 if (sizeOfInstr != NULL) { 3005 fprintf(stderr,"size of opcode: %s\n", sizeOfInstr); 3006 } 3007 } 3008 3009 return sizeOfInstr; 3010 } 3011 3012 3013 //------------------------------opcode_parse----------------------------------- 3014 Opcode * ADLParser::opcode_parse(InstructForm *instr) { 3015 char *primary = NULL; 3016 char *secondary = NULL; 3017 char *tertiary = NULL; 3018 3019 char *val = NULL; 3020 Opcode *opcode = NULL; 3021 3022 // Get value of the instruction's opcode 3023 skipws(); 3024 if (_curchar != '(') { // Check for parenthesized operand list 3025 parse_err(SYNERR, "missing '(' in expand instruction declaration\n"); 3026 return NULL; 3027 } 3028 next_char(); // skip open paren 3029 skipws(); 3030 if (_curchar != ')') { 3031 // Parse primary, secondary, and tertiary opcodes, if provided. 3032 if ( ((primary = get_ident_or_literal_constant("primary opcode")) == NULL) ) { 3033 parse_err(SYNERR, "primary hex opcode expected at %c\n", _curchar); 3034 return NULL; 3035 } 3036 skipws(); 3037 if (_curchar == ',') { 3038 next_char(); 3039 skipws(); 3040 // Parse secondary opcode 3041 if ( ((secondary = get_ident_or_literal_constant("secondary opcode")) == NULL) ) { 3042 parse_err(SYNERR, "secondary hex opcode expected at %c\n", _curchar); 3043 return NULL; 3044 } 3045 skipws(); 3046 if (_curchar == ',') { 3047 next_char(); 3048 skipws(); 3049 // Parse tertiary opcode 3050 if ( ((tertiary = get_ident_or_literal_constant("tertiary opcode")) == NULL) ) { 3051 parse_err(SYNERR,"tertiary hex opcode expected at %c\n", _curchar); 3052 return NULL; 3053 } 3054 skipws(); 3055 } 3056 } 3057 skipws(); 3058 if (_curchar != ')') { 3059 parse_err(SYNERR, "Missing ')' in opcode description\n"); 3060 return NULL; 3061 } 3062 } 3063 next_char(); // Skip ')' 3064 skipws(); 3065 // Check for terminator 3066 if (_curchar != ';') { 3067 parse_err(SYNERR, "missing ';' in ins_attrib definition\n"); 3068 return NULL; 3069 } 3070 next_char(); // Advance past the ';' 3071 skipws(); // necessary for instr_parse() 3072 3073 // Debug Stuff 3074 if (_AD._adl_debug > 1) { 3075 if (primary != NULL) fprintf(stderr,"primary opcode: %s\n", primary); 3076 if (secondary != NULL) fprintf(stderr,"secondary opcode: %s\n", secondary); 3077 if (tertiary != NULL) fprintf(stderr,"tertiary opcode: %s\n", tertiary); 3078 } 3079 3080 // Generate new object and return 3081 opcode = new Opcode(primary, secondary, tertiary); 3082 return opcode; 3083 } 3084 3085 3086 //------------------------------interface_parse-------------------------------- 3087 Interface *ADLParser::interface_parse(void) { 3088 char *iface_name = NULL; // Name of interface class being used 3089 char *iface_code = NULL; // Describe components of this class 3090 3091 // Get interface class name 3092 skipws(); // Skip whitespace 3093 if (_curchar != '(') { 3094 parse_err(SYNERR, "Missing '(' at start of interface description.\n"); 3095 return NULL; 3096 } 3097 next_char(); // move past '(' 3098 skipws(); 3099 iface_name = get_ident(); 3100 if (iface_name == NULL) { 3101 parse_err(SYNERR, "missing interface name after 'interface'.\n"); 3102 return NULL; 3103 } 3104 skipws(); 3105 if (_curchar != ')') { 3106 parse_err(SYNERR, "Missing ')' after name of interface.\n"); 3107 return NULL; 3108 } 3109 next_char(); // move past ')' 3110 3111 // Get details of the interface, 3112 // for the type of interface indicated by iface_name. 3113 Interface *inter = NULL; 3114 skipws(); 3115 if ( _curchar != ';' ) { 3116 if ( strcmp(iface_name,"MEMORY_INTER") == 0 ) { 3117 inter = mem_interface_parse(); 3118 } 3119 else if ( strcmp(iface_name,"COND_INTER") == 0 ) { 3120 inter = cond_interface_parse(); 3121 } 3122 // The parse routines consume the "%}" 3123 3124 // Check for probable extra ';' after defining block. 3125 if ( _curchar == ';' ) { 3126 parse_err(SYNERR, "Extra ';' after defining interface block.\n"); 3127 next_char(); // Skip ';' 3128 return NULL; 3129 } 3130 } else { 3131 next_char(); // move past ';' 3132 3133 // Create appropriate interface object 3134 if ( strcmp(iface_name,"REG_INTER") == 0 ) { 3135 inter = new RegInterface(); 3136 } 3137 else if ( strcmp(iface_name,"CONST_INTER") == 0 ) { 3138 inter = new ConstInterface(); 3139 } 3140 } 3141 skipws(); // be friendly to oper_parse() 3142 // Debug Stuff 3143 if (_AD._adl_debug > 1) fprintf(stderr,"Interface Form: %s\n", iface_name); 3144 3145 // Create appropriate interface object and return. 3146 return inter; 3147 } 3148 3149 3150 //------------------------------mem_interface_parse---------------------------- 3151 Interface *ADLParser::mem_interface_parse(void) { 3152 // Fields for MemInterface 3153 char *base = NULL; 3154 char *index = NULL; 3155 char *scale = NULL; 3156 char *disp = NULL; 3157 3158 if (_curchar != '%') { 3159 parse_err(SYNERR, "Missing '%{' for 'interface' block.\n"); 3160 return NULL; 3161 } 3162 next_char(); // Skip '%' 3163 if (_curchar != '{') { 3164 parse_err(SYNERR, "Missing '%{' for 'interface' block.\n"); 3165 return NULL; 3166 } 3167 next_char(); // Skip '{' 3168 skipws(); 3169 do { 3170 char *field = get_ident(); 3171 if (field == NULL) { 3172 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%}' ending interface.\n"); 3173 return NULL; 3174 } 3175 if ( strcmp(field,"base") == 0 ) { 3176 base = interface_field_parse(); 3177 } 3178 else if ( strcmp(field,"index") == 0 ) { 3179 index = interface_field_parse(); 3180 } 3181 else if ( strcmp(field,"scale") == 0 ) { 3182 scale = interface_field_parse(); 3183 } 3184 else if ( strcmp(field,"disp") == 0 ) { 3185 disp = interface_field_parse(); 3186 } 3187 else { 3188 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%}' ending interface.\n"); 3189 return NULL; 3190 } 3191 } while( _curchar != '%' ); 3192 next_char(); // Skip '%' 3193 if ( _curchar != '}' ) { 3194 parse_err(SYNERR, "Missing '%}' for 'interface' block.\n"); 3195 return NULL; 3196 } 3197 next_char(); // Skip '}' 3198 3199 // Construct desired object and return 3200 Interface *inter = new MemInterface(base, index, scale, disp); 3201 return inter; 3202 } 3203 3204 3205 //------------------------------cond_interface_parse--------------------------- 3206 Interface *ADLParser::cond_interface_parse(void) { 3207 char *equal; 3208 char *not_equal; 3209 char *less; 3210 char *greater_equal; 3211 char *less_equal; 3212 char *greater; 3213 const char *equal_format = "eq"; 3214 const char *not_equal_format = "ne"; 3215 const char *less_format = "lt"; 3216 const char *greater_equal_format = "ge"; 3217 const char *less_equal_format = "le"; 3218 const char *greater_format = "gt"; 3219 3220 if (_curchar != '%') { 3221 parse_err(SYNERR, "Missing '%{' for 'cond_interface' block.\n"); 3222 return NULL; 3223 } 3224 next_char(); // Skip '%' 3225 if (_curchar != '{') { 3226 parse_err(SYNERR, "Missing '%{' for 'cond_interface' block.\n"); 3227 return NULL; 3228 } 3229 next_char(); // Skip '{' 3230 skipws(); 3231 do { 3232 char *field = get_ident(); 3233 if (field == NULL) { 3234 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%}' ending interface.\n"); 3235 return NULL; 3236 } 3237 if ( strcmp(field,"equal") == 0 ) { 3238 equal = interface_field_parse(&equal_format); 3239 } 3240 else if ( strcmp(field,"not_equal") == 0 ) { 3241 not_equal = interface_field_parse(¬_equal_format); 3242 } 3243 else if ( strcmp(field,"less") == 0 ) { 3244 less = interface_field_parse(&less_format); 3245 } 3246 else if ( strcmp(field,"greater_equal") == 0 ) { 3247 greater_equal = interface_field_parse(&greater_equal_format); 3248 } 3249 else if ( strcmp(field,"less_equal") == 0 ) { 3250 less_equal = interface_field_parse(&less_equal_format); 3251 } 3252 else if ( strcmp(field,"greater") == 0 ) { 3253 greater = interface_field_parse(&greater_format); 3254 } 3255 else { 3256 parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%}' ending interface.\n"); 3257 return NULL; 3258 } 3259 } while( _curchar != '%' ); 3260 next_char(); // Skip '%' 3261 if ( _curchar != '}' ) { 3262 parse_err(SYNERR, "Missing '%}' for 'interface' block.\n"); 3263 return NULL; 3264 } 3265 next_char(); // Skip '}' 3266 3267 // Construct desired object and return 3268 Interface *inter = new CondInterface(equal, equal_format, 3269 not_equal, not_equal_format, 3270 less, less_format, 3271 greater_equal, greater_equal_format, 3272 less_equal, less_equal_format, 3273 greater, greater_format); 3274 return inter; 3275 } 3276 3277 3278 //------------------------------interface_field_parse-------------------------- 3279 char *ADLParser::interface_field_parse(const char ** format) { 3280 char *iface_field = NULL; 3281 3282 // Get interface field 3283 skipws(); // Skip whitespace 3284 if (_curchar != '(') { 3285 parse_err(SYNERR, "Missing '(' at start of interface field.\n"); 3286 return NULL; 3287 } 3288 next_char(); // move past '(' 3289 skipws(); 3290 if ( _curchar != '0' && _curchar != '$' ) { 3291 parse_err(SYNERR, "missing or invalid interface field contents.\n"); 3292 return NULL; 3293 } 3294 iface_field = get_rep_var_ident(); 3295 if (iface_field == NULL) { 3296 parse_err(SYNERR, "missing or invalid interface field contents.\n"); 3297 return NULL; 3298 } 3299 skipws(); 3300 if (format != NULL && _curchar == ',') { 3301 next_char(); 3302 skipws(); 3303 if (_curchar != '"') { 3304 parse_err(SYNERR, "Missing '\"' in field format .\n"); 3305 return NULL; 3306 } 3307 next_char(); 3308 char *start = _ptr; // Record start of the next string 3309 while ((_curchar != '"') && (_curchar != '%') && (_curchar != '\n')) { 3310 if (_curchar == '\\') next_char(); // superquote 3311 if (_curchar == '\n') parse_err(SYNERR, "newline in string"); // unimplemented! 3312 next_char(); 3313 } 3314 if (_curchar != '"') { 3315 parse_err(SYNERR, "Missing '\"' at end of field format .\n"); 3316 return NULL; 3317 } 3318 // If a string was found, terminate it and record in FormatRule 3319 if ( start != _ptr ) { 3320 *_ptr = '\0'; // Terminate the string 3321 *format = start; 3322 } 3323 next_char(); 3324 skipws(); 3325 } 3326 if (_curchar != ')') { 3327 parse_err(SYNERR, "Missing ')' after interface field.\n"); 3328 return NULL; 3329 } 3330 next_char(); // move past ')' 3331 skipws(); 3332 if ( _curchar != ';' ) { 3333 parse_err(SYNERR, "Missing ';' at end of interface field.\n"); 3334 return NULL; 3335 } 3336 next_char(); // move past ';' 3337 skipws(); // be friendly to interface_parse() 3338 3339 return iface_field; 3340 } 3341 3342 3343 //------------------------------match_parse------------------------------------ 3344 MatchRule *ADLParser::match_parse(FormDict &operands) { 3345 MatchRule *match; // Match Rule class for instruction/operand 3346 char *cnstr = NULL; // Code for constructor 3347 int depth = 0; // Counter for matching parentheses 3348 int numleaves = 0; // Counter for number of leaves in rule 3349 3350 // Parse the match rule tree 3351 MatchNode *mnode = matchNode_parse(operands, depth, numleaves, true); 3352 3353 // Either there is a block with a constructor, or a ';' here 3354 skipws(); // Skip whitespace 3355 if ( _curchar == ';' ) { // Semicolon is valid terminator 3356 cnstr = NULL; // no constructor for this form 3357 next_char(); // Move past the ';', replaced with '\0' 3358 } 3359 else if ((cnstr = find_cpp_block("match constructor")) == NULL ) { 3360 parse_err(SYNERR, "invalid construction of match rule\n" 3361 "Missing ';' or invalid '%{' and '%}' constructor\n"); 3362 return NULL; // No MatchRule to return 3363 } 3364 if (_AD._adl_debug > 1) 3365 if (cnstr) fprintf(stderr,"Match Constructor: %s\n", cnstr); 3366 // Build new MatchRule object 3367 match = new MatchRule(_AD, mnode, depth, cnstr, numleaves); 3368 skipws(); // Skip any trailing whitespace 3369 return match; // Return MatchRule object 3370 } 3371 3372 //------------------------------format_parse----------------------------------- 3373 FormatRule* ADLParser::format_parse(void) { 3374 char *desc = NULL; 3375 FormatRule *format = (new FormatRule(desc)); 3376 3377 // Without expression form, MUST have a code block; 3378 skipws(); // Skip whitespace 3379 if ( _curchar == ';' ) { // Semicolon is valid terminator 3380 desc = NULL; // no constructor for this form 3381 next_char(); // Move past the ';', replaced with '\0' 3382 } 3383 else if ( _curchar == '%' && *(_ptr+1) == '{') { 3384 next_char(); // Move past the '%' 3385 next_char(); // Move past the '{' 3386 3387 skipws(); 3388 if (_curchar == '$') { 3389 char* ident = get_rep_var_ident(); 3390 if (strcmp(ident, "$$template") == 0) return template_parse(); 3391 parse_err(SYNERR, "Unknown \"%s\" directive in format", ident); 3392 return NULL; 3393 } 3394 // Check for the opening '"' inside the format description 3395 if ( _curchar == '"' ) { 3396 next_char(); // Move past the initial '"' 3397 if( _curchar == '"' ) { // Handle empty format string case 3398 *_ptr = '\0'; // Terminate empty string 3399 format->_strings.addName(_ptr); 3400 } 3401 3402 // Collect the parts of the format description 3403 // (1) strings that are passed through to tty->print 3404 // (2) replacement/substitution variable, preceeded by a '$' 3405 // (3) multi-token ANSIY C style strings 3406 while ( true ) { 3407 if ( _curchar == '%' || _curchar == '\n' ) { 3408 if ( _curchar != '"' ) { 3409 parse_err(SYNERR, "missing '\"' at end of format block"); 3410 return NULL; 3411 } 3412 } 3413 3414 // (1) 3415 // Check if there is a string to pass through to output 3416 char *start = _ptr; // Record start of the next string 3417 while ((_curchar != '$') && (_curchar != '"') && (_curchar != '%') && (_curchar != '\n')) { 3418 if (_curchar == '\\') { 3419 next_char(); // superquote 3420 if ((_curchar == '$') || (_curchar == '%')) 3421 // hack to avoid % escapes and warnings about undefined \ escapes 3422 *(_ptr-1) = _curchar; 3423 } 3424 if (_curchar == '\n') parse_err(SYNERR, "newline in string"); // unimplemented! 3425 next_char(); 3426 } 3427 // If a string was found, terminate it and record in FormatRule 3428 if ( start != _ptr ) { 3429 *_ptr = '\0'; // Terminate the string 3430 format->_strings.addName(start); 3431 } 3432 3433 // (2) 3434 // If we are at a replacement variable, 3435 // copy it and record in FormatRule 3436 if ( _curchar == '$' ) { 3437 next_char(); // Move past the '$' 3438 char* rep_var = get_ident(); // Nil terminate the variable name 3439 rep_var = strdup(rep_var);// Copy the string 3440 *_ptr = _curchar; // and replace Nil with original character 3441 format->_rep_vars.addName(rep_var); 3442 // Add flag to _strings list indicating we should check _rep_vars 3443 format->_strings.addName(NameList::_signal); 3444 } 3445 3446 // (3) 3447 // Allow very long strings to be broken up, 3448 // using the ANSI C syntax "foo\n" <newline> "bar" 3449 if ( _curchar == '"') { 3450 next_char(); // Move past the '"' 3451 skipws(); // Skip white space before next string token 3452 if ( _curchar != '"') { 3453 break; 3454 } else { 3455 // Found one. Skip both " and the whitespace in between. 3456 next_char(); 3457 } 3458 } 3459 } // end while part of format description 3460 3461 // Check for closing '"' and '%}' in format description 3462 skipws(); // Move to closing '%}' 3463 if ( _curchar != '%' ) { 3464 parse_err(SYNERR, "non-blank characters between closing '\"' and '%' in format"); 3465 return NULL; 3466 } 3467 } // Done with format description inside 3468 3469 skipws(); 3470 // Past format description, at '%' 3471 if ( _curchar != '%' || *(_ptr+1) != '}' ) { 3472 parse_err(SYNERR, "missing '%}' at end of format block"); 3473 return NULL; 3474 } 3475 next_char(); // Move past the '%' 3476 next_char(); // Move past the '}' 3477 } 3478 else { // parameter list alone must terminate with a ';' 3479 parse_err(SYNERR, "missing ';' after Format expression"); 3480 return NULL; 3481 } 3482 // Debug Stuff 3483 if (_AD._adl_debug > 1) fprintf(stderr,"Format Rule: %s\n", desc); 3484 3485 skipws(); 3486 return format; 3487 } 3488 3489 3490 //------------------------------template_parse----------------------------------- 3491 FormatRule* ADLParser::template_parse(void) { 3492 char *desc = NULL; 3493 FormatRule *format = (new FormatRule(desc)); 3494 3495 skipws(); 3496 while ( (_curchar != '%') && (*(_ptr+1) != '}') ) { 3497 3498 // (1) 3499 // Check if there is a string to pass through to output 3500 { 3501 char *start = _ptr; // Record start of the next string 3502 while ((_curchar != '$') && ((_curchar != '%') || (*(_ptr+1) != '}')) ) { 3503 // If at the start of a comment, skip past it 3504 if( (_curchar == '/') && ((*(_ptr+1) == '/') || (*(_ptr+1) == '*')) ) { 3505 skipws_no_preproc(); 3506 } else { 3507 // ELSE advance to the next character, or start of the next line 3508 next_char_or_line(); 3509 } 3510 } 3511 // If a string was found, terminate it and record in EncClass 3512 if ( start != _ptr ) { 3513 *_ptr = '\0'; // Terminate the string 3514 // Add flag to _strings list indicating we should check _rep_vars 3515 format->_strings.addName(NameList::_signal2); 3516 format->_strings.addName(start); 3517 } 3518 } 3519 3520 // (2) 3521 // If we are at a replacement variable, 3522 // copy it and record in EncClass 3523 if ( _curchar == '$' ) { 3524 // Found replacement Variable 3525 char *rep_var = get_rep_var_ident_dup(); 3526 if (strcmp(rep_var, "$emit") == 0) { 3527 // switch to normal format parsing 3528 next_char(); 3529 next_char(); 3530 skipws(); 3531 // Check for the opening '"' inside the format description 3532 if ( _curchar == '"' ) { 3533 next_char(); // Move past the initial '"' 3534 if( _curchar == '"' ) { // Handle empty format string case 3535 *_ptr = '\0'; // Terminate empty string 3536 format->_strings.addName(_ptr); 3537 } 3538 3539 // Collect the parts of the format description 3540 // (1) strings that are passed through to tty->print 3541 // (2) replacement/substitution variable, preceeded by a '$' 3542 // (3) multi-token ANSIY C style strings 3543 while ( true ) { 3544 if ( _curchar == '%' || _curchar == '\n' ) { 3545 parse_err(SYNERR, "missing '\"' at end of format block"); 3546 return NULL; 3547 } 3548 3549 // (1) 3550 // Check if there is a string to pass through to output 3551 char *start = _ptr; // Record start of the next string 3552 while ((_curchar != '$') && (_curchar != '"') && (_curchar != '%') && (_curchar != '\n')) { 3553 if (_curchar == '\\') next_char(); // superquote 3554 if (_curchar == '\n') parse_err(SYNERR, "newline in string"); // unimplemented! 3555 next_char(); 3556 } 3557 // If a string was found, terminate it and record in FormatRule 3558 if ( start != _ptr ) { 3559 *_ptr = '\0'; // Terminate the string 3560 format->_strings.addName(start); 3561 } 3562 3563 // (2) 3564 // If we are at a replacement variable, 3565 // copy it and record in FormatRule 3566 if ( _curchar == '$' ) { 3567 next_char(); // Move past the '$' 3568 char* next_rep_var = get_ident(); // Nil terminate the variable name 3569 next_rep_var = strdup(next_rep_var);// Copy the string 3570 *_ptr = _curchar; // and replace Nil with original character 3571 format->_rep_vars.addName(next_rep_var); 3572 // Add flag to _strings list indicating we should check _rep_vars 3573 format->_strings.addName(NameList::_signal); 3574 } 3575 3576 // (3) 3577 // Allow very long strings to be broken up, 3578 // using the ANSI C syntax "foo\n" <newline> "bar" 3579 if ( _curchar == '"') { 3580 next_char(); // Move past the '"' 3581 skipws(); // Skip white space before next string token 3582 if ( _curchar != '"') { 3583 break; 3584 } else { 3585 // Found one. Skip both " and the whitespace in between. 3586 next_char(); 3587 } 3588 } 3589 } // end while part of format description 3590 } 3591 } else { 3592 // Add flag to _strings list indicating we should check _rep_vars 3593 format->_rep_vars.addName(rep_var); 3594 // Add flag to _strings list indicating we should check _rep_vars 3595 format->_strings.addName(NameList::_signal3); 3596 } 3597 } // end while part of format description 3598 } 3599 3600 skipws(); 3601 // Past format description, at '%' 3602 if ( _curchar != '%' || *(_ptr+1) != '}' ) { 3603 parse_err(SYNERR, "missing '%}' at end of format block"); 3604 return NULL; 3605 } 3606 next_char(); // Move past the '%' 3607 next_char(); // Move past the '}' 3608 3609 // Debug Stuff 3610 if (_AD._adl_debug > 1) fprintf(stderr,"Format Rule: %s\n", desc); 3611 3612 skipws(); 3613 return format; 3614 } 3615 3616 3617 //------------------------------effect_parse----------------------------------- 3618 void ADLParser::effect_parse(InstructForm *instr) { 3619 char* desc = NULL; 3620 3621 skipws(); // Skip whitespace 3622 if (_curchar != '(') { 3623 parse_err(SYNERR, "missing '(' in effect definition\n"); 3624 return; 3625 } 3626 // Get list of effect-operand pairs and insert into dictionary 3627 else get_effectlist(instr->_effects, instr->_localNames); 3628 3629 // Debug Stuff 3630 if (_AD._adl_debug > 1) fprintf(stderr,"Effect description: %s\n", desc); 3631 if (_curchar != ';') { 3632 parse_err(SYNERR, "missing ';' in Effect definition\n"); 3633 } 3634 next_char(); // Skip ';' 3635 3636 } 3637 3638 //------------------------------expand_parse----------------------------------- 3639 ExpandRule* ADLParser::expand_parse(InstructForm *instr) { 3640 char *ident, *ident2; 3641 OperandForm *oper; 3642 InstructForm *ins; 3643 NameAndList *instr_and_operands = NULL; 3644 ExpandRule *exp = new ExpandRule(); 3645 3646 // Expand is a block containing an ordered list of instructions, each of 3647 // which has an ordered list of operands. 3648 // Check for block delimiter 3649 skipws(); // Skip leading whitespace 3650 if ((_curchar != '%') 3651 || (next_char(), (_curchar != '{')) ) { // If not open block 3652 parse_err(SYNERR, "missing '%{' in expand definition\n"); 3653 return(NULL); 3654 } 3655 next_char(); // Maintain the invariant 3656 do { 3657 ident = get_ident(); // Grab next identifier 3658 if (ident == NULL) { 3659 parse_err(SYNERR, "identifier expected at %c\n", _curchar); 3660 continue; 3661 } // Check that you have a valid instruction 3662 const Form *form = _globalNames[ident]; 3663 ins = form ? form->is_instruction() : NULL; 3664 if (ins == NULL) { 3665 // This is a new operand 3666 oper = form ? form->is_operand() : NULL; 3667 if (oper == NULL) { 3668 parse_err(SYNERR, "instruction/operand name expected at %s\n", ident); 3669 continue; 3670 } 3671 // Throw the operand on the _newopers list 3672 skipws(); 3673 ident = get_unique_ident(instr->_localNames,"Operand"); 3674 if (ident == NULL) { 3675 parse_err(SYNERR, "identifier expected at %c\n", _curchar); 3676 continue; 3677 } 3678 exp->_newopers.addName(ident); 3679 // Add new operand to LocalNames 3680 instr->_localNames.Insert(ident, oper); 3681 // Grab any constructor code and save as a string 3682 char *c = NULL; 3683 skipws(); 3684 if (_curchar == '%') { // Need a constructor for the operand 3685 c = find_cpp_block("Operand Constructor"); 3686 if (c == NULL) { 3687 parse_err(SYNERR, "Invalid code block for operand constructor\n", _curchar); 3688 continue; 3689 } 3690 // Add constructor to _newopconst Dict 3691 exp->_newopconst.Insert(ident, c); 3692 } 3693 else if (_curchar != ';') { // If no constructor, need a ; 3694 parse_err(SYNERR, "Missing ; in expand rule operand declaration\n"); 3695 continue; 3696 } 3697 else next_char(); // Skip the ; 3698 skipws(); 3699 } 3700 else { 3701 // Add instruction to list 3702 instr_and_operands = new NameAndList(ident); 3703 // Grab operands, build nameList of them, and then put into dictionary 3704 skipws(); 3705 if (_curchar != '(') { // Check for parenthesized operand list 3706 parse_err(SYNERR, "missing '(' in expand instruction declaration\n"); 3707 continue; 3708 } 3709 do { 3710 next_char(); // skip open paren & comma characters 3711 skipws(); 3712 if (_curchar == ')') break; 3713 ident2 = get_ident(); 3714 skipws(); 3715 if (ident2 == NULL) { 3716 parse_err(SYNERR, "identifier expected at %c\n", _curchar); 3717 continue; 3718 } // Check that you have a valid operand 3719 const Form *form2 = instr->_localNames[ident2]; 3720 if (!form2) { 3721 parse_err(SYNERR, "operand name expected at %s\n", ident2); 3722 continue; 3723 } 3724 oper = form2->is_operand(); 3725 if (oper == NULL && !form2->is_opclass()) { 3726 parse_err(SYNERR, "operand name expected at %s\n", ident2); 3727 continue; 3728 } // Add operand to list 3729 instr_and_operands->add_entry(ident2); 3730 } while(_curchar == ','); 3731 if (_curchar != ')') { 3732 parse_err(SYNERR, "missing ')'in expand instruction declaration\n"); 3733 continue; 3734 } 3735 next_char(); 3736 if (_curchar != ';') { 3737 parse_err(SYNERR, "missing ';'in expand instruction declaration\n"); 3738 continue; 3739 } 3740 next_char(); 3741 3742 // Record both instruction name and its operand list 3743 exp->add_instruction(instr_and_operands); 3744 3745 skipws(); 3746 } 3747 3748 } while(_curchar != '%'); 3749 next_char(); 3750 if (_curchar != '}') { 3751 parse_err(SYNERR, "missing '%}' in expand rule definition\n"); 3752 return(NULL); 3753 } 3754 next_char(); 3755 3756 // Debug Stuff 3757 if (_AD._adl_debug > 1) fprintf(stderr,"Expand Rule:\n"); 3758 3759 skipws(); 3760 return (exp); 3761 } 3762 3763 //------------------------------rewrite_parse---------------------------------- 3764 RewriteRule* ADLParser::rewrite_parse(void) { 3765 char* params = NULL; 3766 char* desc = NULL; 3767 3768 3769 // This feature targeted for second generation description language. 3770 3771 skipws(); // Skip whitespace 3772 // Get parameters for rewrite 3773 if ((params = get_paren_expr("rewrite parameters")) == NULL) { 3774 parse_err(SYNERR, "missing '(' in rewrite rule\n"); 3775 return NULL; 3776 } 3777 // Debug Stuff 3778 if (_AD._adl_debug > 1) fprintf(stderr,"Rewrite parameters: %s\n", params); 3779 3780 // For now, grab entire block; 3781 skipws(); 3782 if ( (desc = find_cpp_block("rewrite block")) == NULL ) { 3783 parse_err(SYNERR, "incorrect or missing block for 'rewrite'.\n"); 3784 return NULL; 3785 } 3786 // Debug Stuff 3787 if (_AD._adl_debug > 1) fprintf(stderr,"Rewrite Rule: %s\n", desc); 3788 3789 skipws(); 3790 return (new RewriteRule(params,desc)); 3791 } 3792 3793 //------------------------------attr_parse------------------------------------- 3794 Attribute *ADLParser::attr_parse(char* ident) { 3795 Attribute *attrib; // Attribute class 3796 char *cost = NULL; // String representation of cost attribute 3797 3798 skipws(); // Skip leading whitespace 3799 if ( (cost = get_paren_expr("attribute")) == NULL ) { 3800 parse_err(SYNERR, "incorrect or missing expression for 'attribute'\n"); 3801 return NULL; 3802 } 3803 // Debug Stuff 3804 if (_AD._adl_debug > 1) fprintf(stderr,"Attribute: %s\n", cost); 3805 if (_curchar != ';') { 3806 parse_err(SYNERR, "missing ';' in attribute definition\n"); 3807 return NULL; 3808 } 3809 next_char(); // Point after the terminator 3810 3811 skipws(); 3812 attrib = new Attribute(ident,cost,INS_ATTR); // Build new predicate object 3813 return attrib; 3814 } 3815 3816 3817 //------------------------------matchNode_parse-------------------------------- 3818 MatchNode *ADLParser::matchNode_parse(FormDict &operands, int &depth, int &numleaves, bool atroot) { 3819 // Count depth of parenthesis nesting for both left and right children 3820 int lParens = depth; 3821 int rParens = depth; 3822 3823 // MatchNode objects for left, right, and root of subtree. 3824 MatchNode *lChild = NULL; 3825 MatchNode *rChild = NULL; 3826 char *token; // Identifier which may be opcode or operand 3827 3828 // Match expression starts with a '(' 3829 if (cur_char() != '(') 3830 return NULL; 3831 3832 next_char(); // advance past '(' 3833 3834 // Parse the opcode 3835 token = get_ident(); // Get identifier, opcode 3836 if (token == NULL) { 3837 parse_err(SYNERR, "missing opcode in match expression\n"); 3838 return NULL; 3839 } 3840 3841 // Take note if we see one of a few special operations - those that are 3842 // treated differently on different architectures in the sense that on 3843 // one architecture there is a match rule and on another there isn't (so 3844 // a call will eventually be generated). 3845 3846 for (int i = _last_machine_leaf + 1; i < _last_opcode; i++) { 3847 if (strcmp(token, NodeClassNames[i]) == 0) { 3848 _AD.has_match_rule(i, true); 3849 } 3850 } 3851 3852 // Lookup the root value in the operands dict to perform substitution 3853 const char *result = NULL; // Result type will be filled in later 3854 const char *name = token; // local name associated with this node 3855 const char *operation = token; // remember valid operation for later 3856 const Form *form = operands[token]; 3857 OpClassForm *opcForm = form ? form->is_opclass() : NULL; 3858 if (opcForm != NULL) { 3859 // If this token is an entry in the local names table, record its type 3860 if (!opcForm->ideal_only()) { 3861 operation = opcForm->_ident; 3862 result = operation; // Operands result in their own type 3863 } 3864 // Otherwise it is an ideal type, and so, has no local name 3865 else name = NULL; 3866 } 3867 3868 // Parse the operands 3869 skipws(); 3870 if (cur_char() != ')') { 3871 3872 // Parse the left child 3873 if (strcmp(operation,"Set")) 3874 lChild = matchChild_parse(operands, lParens, numleaves, false); 3875 else 3876 lChild = matchChild_parse(operands, lParens, numleaves, true); 3877 3878 skipws(); 3879 if (cur_char() != ')' ) { 3880 if(strcmp(operation, "Set")) 3881 rChild = matchChild_parse(operands,rParens,numleaves,false); 3882 else 3883 rChild = matchChild_parse(operands,rParens,numleaves,true); 3884 } 3885 } 3886 3887 // Check for required ')' 3888 skipws(); 3889 if (cur_char() != ')') { 3890 parse_err(SYNERR, "missing ')' in match expression\n"); 3891 return NULL; 3892 } 3893 next_char(); // skip the ')' 3894 3895 MatchNode* mroot = new MatchNode(_AD,result,name,operation,lChild,rChild); 3896 3897 // If not the root, reduce this subtree to an internal operand 3898 if (!atroot) { 3899 mroot->build_internalop(); 3900 } 3901 // depth is greater of left and right paths. 3902 depth = (lParens > rParens) ? lParens : rParens; 3903 3904 return mroot; 3905 } 3906 3907 3908 //------------------------------matchChild_parse------------------------------- 3909 MatchNode *ADLParser::matchChild_parse(FormDict &operands, int &parens, int &numleaves, bool atroot) { 3910 MatchNode *child = NULL; 3911 const char *result = NULL; 3912 const char *token = NULL; 3913 const char *opType = NULL; 3914 3915 if (cur_char() == '(') { // child is an operation 3916 ++parens; 3917 child = matchNode_parse(operands, parens, numleaves, atroot); 3918 } 3919 else { // child is an operand 3920 token = get_ident(); 3921 const Form *form = operands[token]; 3922 OpClassForm *opcForm = form ? form->is_opclass() : NULL; 3923 if (opcForm != NULL) { 3924 opType = opcForm->_ident; 3925 result = opcForm->_ident; // an operand's result matches its type 3926 } else { 3927 parse_err(SYNERR, "undefined operand %s in match rule\n", token); 3928 return NULL; 3929 } 3930 3931 if (opType == NULL) { 3932 parse_err(SYNERR, "missing type for argument '%s'\n", token); 3933 } 3934 3935 child = new MatchNode(_AD, result, token, opType); 3936 ++numleaves; 3937 } 3938 3939 return child; 3940 } 3941 3942 3943 3944 // ******************** Private Utility Functions ************************* 3945 3946 3947 char* ADLParser::find_cpp_block(const char* description) { 3948 char *next; // Pointer for finding block delimiters 3949 char* cppBlock = NULL; // Beginning of C++ code block 3950 3951 if (_curchar == '%') { // Encoding is a C++ expression 3952 next_char(); 3953 if (_curchar != '{') { 3954 parse_err(SYNERR, "missing '{' in %s \n", description); 3955 return NULL; 3956 } 3957 next_char(); // Skip block delimiter 3958 skipws_no_preproc(); // Skip leading whitespace 3959 cppBlock = _ptr; // Point to start of expression 3960 int line = linenum(); 3961 next = _ptr + 1; 3962 while(((_curchar != '%') || (*next != '}')) && (_curchar != '\0')) { 3963 next_char_or_line(); 3964 next = _ptr+1; // Maintain the next pointer 3965 } // Grab string 3966 if (_curchar == '\0') { 3967 parse_err(SYNERR, "invalid termination of %s \n", description); 3968 return NULL; 3969 } 3970 *_ptr = '\0'; // Terminate string 3971 _ptr += 2; // Skip block delimiter 3972 _curchar = *_ptr; // Maintain invariant 3973 3974 // Prepend location descriptor, for debugging. 3975 if (_AD._adlocation_debug) { 3976 char* location = get_line_string(line); 3977 char* end_loc = end_line_marker(); 3978 char* result = (char *)malloc(strlen(location) + strlen(cppBlock) + strlen(end_loc) + 1); 3979 strcpy(result, location); 3980 strcat(result, cppBlock); 3981 strcat(result, end_loc); 3982 cppBlock = result; 3983 free(location); 3984 } 3985 } 3986 3987 return cppBlock; 3988 } 3989 3990 // Move to the closing token of the expression we are currently at, 3991 // as defined by stop_chars. Match parens and quotes. 3992 char* ADLParser::get_expr(const char *desc, const char *stop_chars) { 3993 char* expr = NULL; 3994 int paren = 0; 3995 3996 expr = _ptr; 3997 while (paren > 0 || !strchr(stop_chars, _curchar)) { 3998 if (_curchar == '(') { // Down level of nesting 3999 paren++; // Bump the parenthesis counter 4000 next_char(); // maintain the invariant 4001 } 4002 else if (_curchar == ')') { // Up one level of nesting 4003 if (paren == 0) { 4004 // Paren underflow: We didn't encounter the required stop-char. 4005 parse_err(SYNERR, "too many )'s, did not find %s after %s\n", 4006 stop_chars, desc); 4007 return NULL; 4008 } 4009 paren--; // Drop the parenthesis counter 4010 next_char(); // Maintain the invariant 4011 } 4012 else if (_curchar == '"' || _curchar == '\'') { 4013 int qchar = _curchar; 4014 while (true) { 4015 next_char(); 4016 if (_curchar == qchar) { next_char(); break; } 4017 if (_curchar == '\\') next_char(); // superquote 4018 if (_curchar == '\n' || _curchar == '\0') { 4019 parse_err(SYNERR, "newline in string in %s\n", desc); 4020 return NULL; 4021 } 4022 } 4023 } 4024 else if (_curchar == '%' && (_ptr[1] == '{' || _ptr[1] == '}')) { 4025 // Make sure we do not stray into the next ADLC-level form. 4026 parse_err(SYNERR, "unexpected %%%c in %s\n", _ptr[1], desc); 4027 return NULL; 4028 } 4029 else if (_curchar == '\0') { 4030 parse_err(SYNERR, "unexpected EOF in %s\n", desc); 4031 return NULL; 4032 } 4033 else { 4034 // Always walk over whitespace, comments, preprocessor directives, etc. 4035 char* pre_skip_ptr = _ptr; 4036 skipws(); 4037 // If the parser declined to make progress on whitespace, 4038 // skip the next character, which is therefore NOT whitespace. 4039 if (pre_skip_ptr == _ptr) { 4040 next_char(); 4041 } else if (pre_skip_ptr+strlen(pre_skip_ptr) != _ptr+strlen(_ptr)) { 4042 parse_err(SYNERR, "unimplemented: preprocessor must not elide subexpression in %s", desc); 4043 } 4044 } 4045 } 4046 4047 assert(strchr(stop_chars, _curchar), "non-null return must be at stop-char"); 4048 *_ptr = '\0'; // Replace ')' or other stop-char with '\0' 4049 return expr; 4050 } 4051 4052 // Helper function around get_expr 4053 // Sets _curchar to '(' so that get_paren_expr will search for a matching ')' 4054 char *ADLParser::get_paren_expr(const char *description, bool include_location) { 4055 int line = linenum(); 4056 if (_curchar != '(') // Escape if not valid starting position 4057 return NULL; 4058 next_char(); // Skip the required initial paren. 4059 char *token2 = get_expr(description, ")"); 4060 if (_curchar == ')') 4061 next_char(); // Skip required final paren. 4062 int junk = 0; 4063 if (include_location && _AD._adlocation_debug && !is_int_token(token2, junk)) { 4064 // Prepend location descriptor, for debugging. 4065 char* location = get_line_string(line); 4066 char* end_loc = end_line_marker(); 4067 char* result = (char *)malloc(strlen(location) + strlen(token2) + strlen(end_loc) + 1); 4068 strcpy(result, location); 4069 strcat(result, token2); 4070 strcat(result, end_loc); 4071 token2 = result; 4072 free(location); 4073 } 4074 return token2; 4075 } 4076 4077 //------------------------------get_ident_common------------------------------- 4078 // Looks for an identifier in the buffer, and turns it into a null terminated 4079 // string(still inside the file buffer). Returns a pointer to the string or 4080 // NULL if some other token is found instead. 4081 char *ADLParser::get_ident_common(bool do_preproc) { 4082 register char c; 4083 char *start; // Pointer to start of token 4084 char *end; // Pointer to end of token 4085 4086 if( _curline == NULL ) // Return NULL at EOF. 4087 return NULL; 4088 4089 skipws_common(do_preproc); // Skip whitespace before identifier 4090 start = end = _ptr; // Start points at first character 4091 end--; // unwind end by one to prepare for loop 4092 do { 4093 end++; // Increment end pointer 4094 c = *end; // Grab character to test 4095 } while ( ((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z')) 4096 || ((c >= '0') && (c <= '9')) 4097 || ((c == '_')) || ((c == ':')) || ((c == '#')) ); 4098 if (start == end) { // We popped out on the first try 4099 parse_err(SYNERR, "identifier expected at %c\n", c); 4100 start = NULL; 4101 } 4102 else { 4103 _curchar = c; // Save the first character of next token 4104 *end = '\0'; // NULL terminate the string in place 4105 } 4106 _ptr = end; // Reset _ptr to point to next char after token 4107 4108 // Make sure we do not try to use #defined identifiers. If start is 4109 // NULL an error was already reported. 4110 if (do_preproc && start != NULL) { 4111 const char* def = _AD.get_preproc_def(start); 4112 if (def != NULL && strcmp(def, start)) { 4113 const char* def1 = def; 4114 const char* def2 = _AD.get_preproc_def(def1); 4115 // implement up to 2 levels of #define 4116 if (def2 != NULL && strcmp(def2, def1)) { 4117 def = def2; 4118 const char* def3 = _AD.get_preproc_def(def2); 4119 if (def3 != NULL && strcmp(def3, def2) && strcmp(def3, def1)) { 4120 parse_err(SYNERR, "unimplemented: using %s defined as %s => %s => %s", 4121 start, def1, def2, def3); 4122 } 4123 } 4124 start = strdup(def); 4125 } 4126 } 4127 4128 return start; // Pointer to token in filebuf 4129 } 4130 4131 //------------------------------get_ident_dup---------------------------------- 4132 // Looks for an identifier in the buffer, and returns a duplicate 4133 // or NULL if some other token is found instead. 4134 char *ADLParser::get_ident_dup(void) { 4135 char *ident = get_ident(); 4136 4137 // Duplicate an identifier before returning and restore string. 4138 if( ident != NULL ) { 4139 ident = strdup(ident); // Copy the string 4140 *_ptr = _curchar; // and replace Nil with original character 4141 } 4142 4143 return ident; 4144 } 4145 4146 //----------------------get_ident_or_literal_constant-------------------------- 4147 // Looks for an identifier in the buffer, or a parenthesized expression. 4148 char *ADLParser::get_ident_or_literal_constant(const char* description) { 4149 char* param = NULL; 4150 skipws(); 4151 if (_curchar == '(') { 4152 // Grab a constant expression. 4153 param = get_paren_expr(description); 4154 if (param[0] != '(') { 4155 char* buf = (char*) malloc(strlen(param) + 3); 4156 sprintf(buf, "(%s)", param); 4157 param = buf; 4158 } 4159 assert(is_literal_constant(param), 4160 "expr must be recognizable as a constant"); 4161 } else { 4162 param = get_ident(); 4163 } 4164 return param; 4165 } 4166 4167 //------------------------------get_rep_var_ident----------------------------- 4168 // Do NOT duplicate, 4169 // Leave nil terminator in buffer 4170 // Preserve initial '$'(s) in string 4171 char *ADLParser::get_rep_var_ident(void) { 4172 // Remember starting point 4173 char *rep_var = _ptr; 4174 4175 // Check for replacement variable indicator '$' and pass if present 4176 if ( _curchar == '$' ) { 4177 next_char(); 4178 } 4179 // Check for a subfield indicator, a second '$', and pass if present 4180 if ( _curchar == '$' ) { 4181 next_char(); 4182 } 4183 4184 // Check for a control indicator, a third '$': 4185 if ( _curchar == '$' ) { 4186 next_char(); 4187 } 4188 4189 // Check for more than three '$'s in sequence, SYNERR 4190 if( _curchar == '$' ) { 4191 parse_err(SYNERR, "Replacement variables and field specifiers can not start with '$$$$'"); 4192 next_char(); 4193 return NULL; 4194 } 4195 4196 // Nil terminate the variable name following the '$' 4197 char *rep_var_name = get_ident(); 4198 assert( rep_var_name != NULL, 4199 "Missing identifier after replacement variable indicator '$'"); 4200 4201 return rep_var; 4202 } 4203 4204 4205 4206 //------------------------------get_rep_var_ident_dup------------------------- 4207 // Return the next replacement variable identifier, skipping first '$' 4208 // given a pointer into a line of the buffer. 4209 // Null terminates string, still inside the file buffer, 4210 // Returns a pointer to a copy of the string, or NULL on failure 4211 char *ADLParser::get_rep_var_ident_dup(void) { 4212 if( _curchar != '$' ) return NULL; 4213 4214 next_char(); // Move past the '$' 4215 char *rep_var = _ptr; // Remember starting point 4216 4217 // Check for a subfield indicator, a second '$': 4218 if ( _curchar == '$' ) { 4219 next_char(); 4220 } 4221 4222 // Check for a control indicator, a third '$': 4223 if ( _curchar == '$' ) { 4224 next_char(); 4225 } 4226 4227 // Check for more than three '$'s in sequence, SYNERR 4228 if( _curchar == '$' ) { 4229 parse_err(SYNERR, "Replacement variables and field specifiers can not start with '$$$$'"); 4230 next_char(); 4231 return NULL; 4232 } 4233 4234 // Nil terminate the variable name following the '$' 4235 char *rep_var_name = get_ident(); 4236 assert( rep_var_name != NULL, 4237 "Missing identifier after replacement variable indicator '$'"); 4238 rep_var = strdup(rep_var); // Copy the string 4239 *_ptr = _curchar; // and replace Nil with original character 4240 4241 return rep_var; 4242 } 4243 4244 4245 //------------------------------get_unique_ident------------------------------ 4246 // Looks for an identifier in the buffer, terminates it with a NULL, 4247 // and checks that it is unique 4248 char *ADLParser::get_unique_ident(FormDict& dict, const char* nameDescription){ 4249 char* ident = get_ident(); 4250 4251 if (ident == NULL) { 4252 parse_err(SYNERR, "missing %s identifier at %c\n", nameDescription, _curchar); 4253 } 4254 else { 4255 if (dict[ident] != NULL) { 4256 parse_err(SYNERR, "duplicate name %s for %s\n", ident, nameDescription); 4257 ident = NULL; 4258 } 4259 } 4260 4261 return ident; 4262 } 4263 4264 4265 //------------------------------get_int---------------------------------------- 4266 // Looks for a character string integer in the buffer, and turns it into an int 4267 // invokes a parse_err if the next token is not an integer. 4268 // This routine does not leave the integer null-terminated. 4269 int ADLParser::get_int(void) { 4270 register char c; 4271 char *start; // Pointer to start of token 4272 char *end; // Pointer to end of token 4273 int result; // Storage for integer result 4274 4275 if( _curline == NULL ) // Return NULL at EOF. 4276 return 0; 4277 4278 skipws(); // Skip whitespace before identifier 4279 start = end = _ptr; // Start points at first character 4280 c = *end; // Grab character to test 4281 while ((c >= '0') && (c <= '9') 4282 || ((c == '-') && (end == start))) { 4283 end++; // Increment end pointer 4284 c = *end; // Grab character to test 4285 } 4286 if (start == end) { // We popped out on the first try 4287 parse_err(SYNERR, "integer expected at %c\n", c); 4288 result = 0; 4289 } 4290 else { 4291 _curchar = c; // Save the first character of next token 4292 *end = '\0'; // NULL terminate the string in place 4293 result = atoi(start); // Convert the string to an integer 4294 *end = _curchar; // Restore buffer to original condition 4295 } 4296 4297 // Reset _ptr to next char after token 4298 _ptr = end; 4299 4300 return result; // integer 4301 } 4302 4303 4304 //------------------------------get_relation_dup------------------------------ 4305 // Looks for a relational operator in the buffer 4306 // invokes a parse_err if the next token is not a relation 4307 // This routine creates a duplicate of the string in the buffer. 4308 char *ADLParser::get_relation_dup(void) { 4309 char *result = NULL; // relational operator being returned 4310 4311 if( _curline == NULL ) // Return NULL at EOF. 4312 return NULL; 4313 4314 skipws(); // Skip whitespace before relation 4315 char *start = _ptr; // Store start of relational operator 4316 char first = *_ptr; // the first character 4317 if( (first == '=') || (first == '!') || (first == '<') || (first == '>') ) { 4318 next_char(); 4319 char second = *_ptr; // the second character 4320 if( (second == '=') ) { 4321 next_char(); 4322 char tmp = *_ptr; 4323 *_ptr = '\0'; // NULL terminate 4324 result = strdup(start); // Duplicate the string 4325 *_ptr = tmp; // restore buffer 4326 } else { 4327 parse_err(SYNERR, "relational operator expected at %s\n", _ptr); 4328 } 4329 } else { 4330 parse_err(SYNERR, "relational operator expected at %s\n", _ptr); 4331 } 4332 4333 return result; 4334 } 4335 4336 4337 4338 //------------------------------get_oplist------------------------------------- 4339 // Looks for identifier pairs where first must be the name of an operand, and 4340 // second must be a name unique in the scope of this instruction. Stores the 4341 // names with a pointer to the OpClassForm of their type in a local name table. 4342 void ADLParser::get_oplist(NameList ¶meters, FormDict &operands) { 4343 OpClassForm *opclass = NULL; 4344 char *ident = NULL; 4345 4346 do { 4347 next_char(); // skip open paren & comma characters 4348 skipws(); 4349 if (_curchar == ')') break; 4350 4351 // Get operand type, and check it against global name table 4352 ident = get_ident(); 4353 if (ident == NULL) { 4354 parse_err(SYNERR, "optype identifier expected at %c\n", _curchar); 4355 return; 4356 } 4357 else { 4358 const Form *form = _globalNames[ident]; 4359 if( form == NULL ) { 4360 parse_err(SYNERR, "undefined operand type %s\n", ident); 4361 return; 4362 } 4363 4364 // Check for valid operand type 4365 OpClassForm *opc = form->is_opclass(); 4366 OperandForm *oper = form->is_operand(); 4367 if((oper == NULL) && (opc == NULL)) { 4368 parse_err(SYNERR, "identifier %s not operand type\n", ident); 4369 return; 4370 } 4371 opclass = opc; 4372 } 4373 // Debugging Stuff 4374 if (_AD._adl_debug > 1) fprintf(stderr, "\tOperand Type: %s\t", ident); 4375 4376 // Get name of operand and add it to local name table 4377 if( (ident = get_unique_ident(operands, "operand")) == NULL) { 4378 return; 4379 } 4380 // Parameter names must not be global names. 4381 if( _globalNames[ident] != NULL ) { 4382 parse_err(SYNERR, "Reuse of global name %s as operand.\n",ident); 4383 return; 4384 } 4385 operands.Insert(ident, opclass); 4386 parameters.addName(ident); 4387 4388 // Debugging Stuff 4389 if (_AD._adl_debug > 1) fprintf(stderr, "\tOperand Name: %s\n", ident); 4390 skipws(); 4391 } while(_curchar == ','); 4392 4393 if (_curchar != ')') parse_err(SYNERR, "missing ')'\n"); 4394 else { 4395 next_char(); // set current character position past the close paren 4396 } 4397 } 4398 4399 4400 //------------------------------get_effectlist--------------------------------- 4401 // Looks for identifier pairs where first must be the name of a pre-defined, 4402 // effect, and the second must be the name of an operand defined in the 4403 // operand list of this instruction. Stores the names with a pointer to the 4404 // effect form in a local effects table. 4405 void ADLParser::get_effectlist(FormDict &effects, FormDict &operands) { 4406 OperandForm *opForm; 4407 Effect *eForm; 4408 char *ident; 4409 4410 do { 4411 next_char(); // skip open paren & comma characters 4412 skipws(); 4413 if (_curchar == ')') break; 4414 4415 // Get effect type, and check it against global name table 4416 ident = get_ident(); 4417 if (ident == NULL) { 4418 parse_err(SYNERR, "effect type identifier expected at %c\n", _curchar); 4419 return; 4420 } 4421 else { 4422 // Check for valid effect type 4423 const Form *form = _globalNames[ident]; 4424 if( form == NULL ) { 4425 parse_err(SYNERR, "undefined effect type %s\n", ident); 4426 return; 4427 } 4428 else { 4429 if( (eForm = form->is_effect()) == NULL) { 4430 parse_err(SYNERR, "identifier %s not effect type\n", ident); 4431 return; 4432 } 4433 } 4434 } 4435 // Debugging Stuff 4436 if (_AD._adl_debug > 1) fprintf(stderr, "\tEffect Type: %s\t", ident); 4437 skipws(); 4438 // Get name of operand and check that it is in the local name table 4439 if( (ident = get_unique_ident(effects, "effect")) == NULL) { 4440 parse_err(SYNERR, "missing operand identifier in effect list\n"); 4441 return; 4442 } 4443 const Form *form = operands[ident]; 4444 opForm = form ? form->is_operand() : NULL; 4445 if( opForm == NULL ) { 4446 if( form && form->is_opclass() ) { 4447 const char* cname = form->is_opclass()->_ident; 4448 parse_err(SYNERR, "operand classes are illegal in effect lists (found %s %s)\n", cname, ident); 4449 } else { 4450 parse_err(SYNERR, "undefined operand %s in effect list\n", ident); 4451 } 4452 return; 4453 } 4454 // Add the pair to the effects table 4455 effects.Insert(ident, eForm); 4456 // Debugging Stuff 4457 if (_AD._adl_debug > 1) fprintf(stderr, "\tOperand Name: %s\n", ident); 4458 skipws(); 4459 } while(_curchar == ','); 4460 4461 if (_curchar != ')') parse_err(SYNERR, "missing ')'\n"); 4462 else { 4463 next_char(); // set current character position past the close paren 4464 } 4465 } 4466 4467 4468 //-------------------------------preproc_line---------------------------------- 4469 // A "#line" keyword has been seen, so parse the rest of the line. 4470 void ADLParser::preproc_line(void) { 4471 int line = get_int(); 4472 skipws_no_preproc(); 4473 const char* file = NULL; 4474 if (_curchar == '"') { 4475 next_char(); // Move past the initial '"' 4476 file = _ptr; 4477 while (true) { 4478 if (_curchar == '\n') { 4479 parse_err(SYNERR, "missing '\"' at end of #line directive"); 4480 return; 4481 } 4482 if (_curchar == '"') { 4483 *_ptr = '\0'; // Terminate the string 4484 next_char(); 4485 skipws_no_preproc(); 4486 break; 4487 } 4488 next_char(); 4489 } 4490 } 4491 ensure_end_of_line(); 4492 if (file != NULL) 4493 _AD._ADL_file._name = file; 4494 _buf.set_linenum(line); 4495 } 4496 4497 //------------------------------preproc_define--------------------------------- 4498 // A "#define" keyword has been seen, so parse the rest of the line. 4499 void ADLParser::preproc_define(void) { 4500 char* flag = get_ident_no_preproc(); 4501 skipws_no_preproc(); 4502 // only #define x y is supported for now 4503 char* def = get_ident_no_preproc(); 4504 _AD.set_preproc_def(flag, def); 4505 skipws_no_preproc(); 4506 if (_curchar != '\n') { 4507 parse_err(SYNERR, "non-identifier in preprocessor definition\n"); 4508 } 4509 } 4510 4511 //------------------------------preproc_undef---------------------------------- 4512 // An "#undef" keyword has been seen, so parse the rest of the line. 4513 void ADLParser::preproc_undef(void) { 4514 char* flag = get_ident_no_preproc(); 4515 skipws_no_preproc(); 4516 ensure_end_of_line(); 4517 _AD.set_preproc_def(flag, NULL); 4518 } 4519 4520 4521 4522 //------------------------------parse_err-------------------------------------- 4523 // Issue a parser error message, and skip to the end of the current line 4524 void ADLParser::parse_err(int flag, const char *fmt, ...) { 4525 va_list args; 4526 4527 va_start(args, fmt); 4528 if (flag == 1) 4529 _AD._syntax_errs += _AD.emit_msg(0, flag, linenum(), fmt, args); 4530 else if (flag == 2) 4531 _AD._semantic_errs += _AD.emit_msg(0, flag, linenum(), fmt, args); 4532 else 4533 _AD._warnings += _AD.emit_msg(0, flag, linenum(), fmt, args); 4534 4535 int error_char = _curchar; 4536 char* error_ptr = _ptr+1; 4537 for(;*_ptr != '\n'; _ptr++) ; // Skip to the end of the current line 4538 _curchar = '\n'; 4539 va_end(args); 4540 _AD._no_output = 1; 4541 4542 if (flag == 1) { 4543 char* error_tail = strchr(error_ptr, '\n'); 4544 char tem = *error_ptr; 4545 error_ptr[-1] = '\0'; 4546 char* error_head = error_ptr-1; 4547 while (error_head > _curline && *error_head) --error_head; 4548 if (error_tail) *error_tail = '\0'; 4549 fprintf(stderr, "Error Context: %s>>>%c<<<%s\n", 4550 error_head, error_char, error_ptr); 4551 if (error_tail) *error_tail = '\n'; 4552 error_ptr[-1] = tem; 4553 } 4554 } 4555 4556 //---------------------------ensure_start_of_line------------------------------ 4557 // A preprocessor directive has been encountered. Be sure it has fallen at 4558 // the beginning of a line, or else report an error. 4559 void ADLParser::ensure_start_of_line(void) { 4560 if (_curchar == '\n') { next_line(); return; } 4561 assert( _ptr >= _curline && _ptr < _curline+strlen(_curline), 4562 "Must be able to find which line we are in" ); 4563 4564 for (char *s = _curline; s < _ptr; s++) { 4565 if (*s > ' ') { 4566 parse_err(SYNERR, "'%c' must be at beginning of line\n", _curchar); 4567 break; 4568 } 4569 } 4570 } 4571 4572 //---------------------------ensure_end_of_line-------------------------------- 4573 // A preprocessor directive has been parsed. Be sure there is no trailing 4574 // garbage at the end of this line. Set the scan point to the beginning of 4575 // the next line. 4576 void ADLParser::ensure_end_of_line(void) { 4577 skipws_no_preproc(); 4578 if (_curchar != '\n' && _curchar != '\0') { 4579 parse_err(SYNERR, "garbage char '%c' at end of line\n", _curchar); 4580 } else { 4581 next_char_or_line(); 4582 } 4583 } 4584 4585 //---------------------------handle_preproc------------------------------------ 4586 // The '#' character introducing a preprocessor directive has been found. 4587 // Parse the whole directive name (e.g., #define, #endif) and take appropriate 4588 // action. If we are in an "untaken" span of text, simply keep track of 4589 // #ifdef nesting structure, so we can find out when to start taking text 4590 // again. (In this state, we "sort of support" C's #if directives, enough 4591 // to disregard their associated #else and #endif lines.) If we are in a 4592 // "taken" span of text, there are two cases: "#define" and "#undef" 4593 // directives are preserved and passed up to the caller, which eventually 4594 // passes control to the top-level parser loop, which handles #define and 4595 // #undef directly. (This prevents these directives from occurring in 4596 // arbitrary positions in the AD file--we require better structure than C.) 4597 // In the other case, and #ifdef, #ifndef, #else, or #endif is silently 4598 // processed as whitespace, with the "taken" state of the text correctly 4599 // updated. This routine returns "false" exactly in the case of a "taken" 4600 // #define or #undef, which tells the caller that a preprocessor token 4601 // has appeared which must be handled explicitly by the parse loop. 4602 bool ADLParser::handle_preproc_token() { 4603 assert(*_ptr == '#', "must be at start of preproc"); 4604 ensure_start_of_line(); 4605 next_char(); 4606 skipws_no_preproc(); 4607 char* start_ident = _ptr; 4608 char* ident = (_curchar == '\n') ? NULL : get_ident_no_preproc(); 4609 if (ident == NULL) { 4610 parse_err(SYNERR, "expected preprocessor command, got end of line\n"); 4611 } else if (!strcmp(ident, "ifdef") || 4612 !strcmp(ident, "ifndef")) { 4613 char* flag = get_ident_no_preproc(); 4614 ensure_end_of_line(); 4615 // Test the identifier only if we are already in taken code: 4616 bool flag_def = preproc_taken() && (_AD.get_preproc_def(flag) != NULL); 4617 bool now_taken = !strcmp(ident, "ifdef") ? flag_def : !flag_def; 4618 begin_if_def(now_taken); 4619 } else if (!strcmp(ident, "if")) { 4620 if (preproc_taken()) 4621 parse_err(SYNERR, "unimplemented: #%s %s", ident, _ptr+1); 4622 next_line(); 4623 // Intelligently skip this nested C preprocessor directive: 4624 begin_if_def(true); 4625 } else if (!strcmp(ident, "else")) { 4626 ensure_end_of_line(); 4627 invert_if_def(); 4628 } else if (!strcmp(ident, "endif")) { 4629 ensure_end_of_line(); 4630 end_if_def(); 4631 } else if (preproc_taken()) { 4632 // pass this token up to the main parser as "#define" or "#undef" 4633 _ptr = start_ident; 4634 _curchar = *--_ptr; 4635 if( _curchar != '#' ) { 4636 parse_err(SYNERR, "no space allowed after # in #define or #undef"); 4637 assert(_curchar == '#', "no space allowed after # in #define or #undef"); 4638 } 4639 return false; 4640 } 4641 return true; 4642 } 4643 4644 //---------------------------skipws_common------------------------------------- 4645 // Skip whitespace, including comments and newlines, while keeping an accurate 4646 // line count. 4647 // Maybe handle certain preprocessor constructs: #ifdef, #ifndef, #else, #endif 4648 void ADLParser::skipws_common(bool do_preproc) { 4649 char *start = _ptr; 4650 char *next = _ptr + 1; 4651 4652 if (*_ptr == '\0') { 4653 // Check for string terminator 4654 if (_curchar > ' ') return; 4655 if (_curchar == '\n') { 4656 if (!do_preproc) return; // let caller handle the newline 4657 next_line(); 4658 _ptr = _curline; next = _ptr + 1; 4659 } 4660 else if (_curchar == '#' || 4661 (_curchar == '/' && (*next == '/' || *next == '*'))) { 4662 parse_err(SYNERR, "unimplemented: comment token in a funny place"); 4663 } 4664 } 4665 while(_curline != NULL) { // Check for end of file 4666 if (*_ptr == '\n') { // keep proper track of new lines 4667 if (!do_preproc) break; // let caller handle the newline 4668 next_line(); 4669 _ptr = _curline; next = _ptr + 1; 4670 } 4671 else if ((*_ptr == '/') && (*next == '/')) // C++ comment 4672 do { _ptr++; next++; } while(*_ptr != '\n'); // So go to end of line 4673 else if ((*_ptr == '/') && (*next == '*')) { // C comment 4674 _ptr++; next++; 4675 do { 4676 _ptr++; next++; 4677 if (*_ptr == '\n') { // keep proper track of new lines 4678 next_line(); // skip newlines within comments 4679 if (_curline == NULL) { // check for end of file 4680 parse_err(SYNERR, "end-of-file detected inside comment\n"); 4681 break; 4682 } 4683 _ptr = _curline; next = _ptr + 1; 4684 } 4685 } while(!((*_ptr == '*') && (*next == '/'))); // Go to end of comment 4686 _ptr = ++next; next++; // increment _ptr past comment end 4687 } 4688 else if (do_preproc && *_ptr == '#') { 4689 // Note that this calls skipws_common(false) recursively! 4690 bool preproc_handled = handle_preproc_token(); 4691 if (!preproc_handled) { 4692 if (preproc_taken()) { 4693 return; // short circuit 4694 } 4695 ++_ptr; // skip the preprocessor character 4696 } 4697 next = _ptr+1; 4698 } else if(*_ptr > ' ' && !(do_preproc && !preproc_taken())) { 4699 break; 4700 } 4701 else if (*_ptr == '"' || *_ptr == '\'') { 4702 assert(do_preproc, "only skip strings if doing preproc"); 4703 // skip untaken quoted string 4704 int qchar = *_ptr; 4705 while (true) { 4706 ++_ptr; 4707 if (*_ptr == qchar) { ++_ptr; break; } 4708 if (*_ptr == '\\') ++_ptr; 4709 if (*_ptr == '\n' || *_ptr == '\0') { 4710 parse_err(SYNERR, "newline in string"); 4711 break; 4712 } 4713 } 4714 next = _ptr + 1; 4715 } 4716 else { ++_ptr; ++next; } 4717 } 4718 if( _curline != NULL ) // at end of file _curchar isn't valid 4719 _curchar = *_ptr; // reset _curchar to maintain invariant 4720 } 4721 4722 //---------------------------cur_char----------------------------------------- 4723 char ADLParser::cur_char() { 4724 return (_curchar); 4725 } 4726 4727 //---------------------------next_char----------------------------------------- 4728 void ADLParser::next_char() { 4729 if (_curchar == '\n') parse_err(WARN, "must call next_line!"); 4730 _curchar = *++_ptr; 4731 // if ( _curchar == '\n' ) { 4732 // next_line(); 4733 // } 4734 } 4735 4736 //---------------------------next_char_or_line--------------------------------- 4737 void ADLParser::next_char_or_line() { 4738 if ( _curchar != '\n' ) { 4739 _curchar = *++_ptr; 4740 } else { 4741 next_line(); 4742 _ptr = _curline; 4743 _curchar = *_ptr; // maintain invariant 4744 } 4745 } 4746 4747 //---------------------------next_line----------------------------------------- 4748 void ADLParser::next_line() { 4749 _curline = _buf.get_line(); 4750 _curchar = ' '; 4751 } 4752 4753 //------------------------get_line_string-------------------------------------- 4754 // Prepended location descriptor, for debugging. 4755 // Must return a malloced string (that can be freed if desired). 4756 char* ADLParser::get_line_string(int linenum) { 4757 const char* file = _AD._ADL_file._name; 4758 int line = linenum ? linenum : this->linenum(); 4759 char* location = (char *)malloc(strlen(file) + 100); 4760 sprintf(location, "\n#line %d \"%s\"\n", line, file); 4761 return location; 4762 } 4763 4764 //-------------------------is_literal_constant--------------------------------- 4765 bool ADLParser::is_literal_constant(const char *param) { 4766 if (param[0] == 0) return false; // null string 4767 if (param[0] == '(') return true; // parenthesized expression 4768 if (param[0] == '0' && (param[1] == 'x' || param[1] == 'X')) { 4769 // Make sure it's a hex constant. 4770 int i = 2; 4771 do { 4772 if( !ADLParser::is_hex_digit(*(param+i)) ) return false; 4773 ++i; 4774 } while( *(param+i) != 0 ); 4775 return true; 4776 } 4777 return false; 4778 } 4779 4780 //---------------------------is_hex_digit-------------------------------------- 4781 bool ADLParser::is_hex_digit(char digit) { 4782 return ((digit >= '0') && (digit <= '9')) 4783 ||((digit >= 'a') && (digit <= 'f')) 4784 ||((digit >= 'A') && (digit <= 'F')); 4785 } 4786 4787 //---------------------------is_int_token-------------------------------------- 4788 bool ADLParser::is_int_token(const char* token, int& intval) { 4789 const char* cp = token; 4790 while (*cp != '\0' && *cp <= ' ') cp++; 4791 if (*cp == '-') cp++; 4792 int ndigit = 0; 4793 while (*cp >= '0' && *cp <= '9') { cp++; ndigit++; } 4794 while (*cp != '\0' && *cp <= ' ') cp++; 4795 if (ndigit == 0 || *cp != '\0') { 4796 return false; 4797 } 4798 intval = atoi(token); 4799 return true; 4800 } 4801 4802 static const char* skip_expr_ws(const char* str) { 4803 const char * cp = str; 4804 while (cp[0]) { 4805 if (cp[0] <= ' ') { 4806 ++cp; 4807 } else if (cp[0] == '#') { 4808 ++cp; 4809 while (cp[0] == ' ') ++cp; 4810 assert(0 == strncmp(cp, "line", 4), "must be a #line directive"); 4811 const char* eol = strchr(cp, '\n'); 4812 assert(eol != NULL, "must find end of line"); 4813 if (eol == NULL) eol = cp + strlen(cp); 4814 cp = eol; 4815 } else { 4816 break; 4817 } 4818 } 4819 return cp; 4820 } 4821 4822 //-----------------------equivalent_expressions-------------------------------- 4823 bool ADLParser::equivalent_expressions(const char* str1, const char* str2) { 4824 if (str1 == str2) 4825 return true; 4826 else if (str1 == NULL || str2 == NULL) 4827 return false; 4828 const char* cp1 = str1; 4829 const char* cp2 = str2; 4830 char in_quote = '\0'; 4831 while (cp1[0] && cp2[0]) { 4832 if (!in_quote) { 4833 // skip spaces and/or cpp directives 4834 const char* cp1a = skip_expr_ws(cp1); 4835 const char* cp2a = skip_expr_ws(cp2); 4836 if (cp1a > cp1 && cp2a > cp2) { 4837 cp1 = cp1a; cp2 = cp2a; 4838 continue; 4839 } 4840 if (cp1a > cp1 || cp2a > cp2) break; // fail 4841 } 4842 // match one non-space char 4843 if (cp1[0] != cp2[0]) break; // fail 4844 char ch = cp1[0]; 4845 cp1++; cp2++; 4846 // watch for quotes 4847 if (in_quote && ch == '\\') { 4848 if (cp1[0] != cp2[0]) break; // fail 4849 if (!cp1[0]) break; 4850 cp1++; cp2++; 4851 } 4852 if (in_quote && ch == in_quote) { 4853 in_quote = '\0'; 4854 } else if (!in_quote && (ch == '"' || ch == '\'')) { 4855 in_quote = ch; 4856 } 4857 } 4858 return (!cp1[0] && !cp2[0]); 4859 } 4860 4861 4862 //-------------------------------trim------------------------------------------ 4863 void ADLParser::trim(char* &token) { 4864 while (*token <= ' ') token++; 4865 char* end = token + strlen(token); 4866 while (end > token && *(end-1) <= ' ') --end; 4867 *end = '\0'; 4868 }