--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/adlc/adlparse.cpp Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,5367 @@
+/*
+ * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+// ADLPARSE.CPP - Architecture Description Language Parser
+// Authors: Chris Vick and Mike Paleczny
+#include "adlc.hpp"
+
+//----------------------------ADLParser----------------------------------------
+// Create a new ADL parser
+ADLParser::ADLParser(FileBuff& buffer, ArchDesc& archDesc)
+ : _buf(buffer), _AD(archDesc),
+ _globalNames(archDesc.globalNames()) {
+ _AD._syntax_errs = _AD._semantic_errs = 0; // No errors so far this file
+ _AD._warnings = 0; // No warnings either
+ _curline = _ptr = NULL; // No pointers into buffer yet
+
+ _preproc_depth = 0;
+ _preproc_not_taken = 0;
+
+ // Delimit command-line definitions from in-file definitions:
+ _AD._preproc_list.add_signal();
+}
+
+//------------------------------~ADLParser-------------------------------------
+// Delete an ADL parser.
+ADLParser::~ADLParser() {
+ if (!_AD._quiet_mode)
+ fprintf(stderr,"---------------------------- Errors and Warnings ----------------------------\n");
+#ifndef ASSERT
+ if (!_AD._quiet_mode) {
+ fprintf(stderr, "**************************************************************\n");
+ fprintf(stderr, "***** WARNING: ASSERT is undefined, assertions disabled. *****\n");
+ fprintf(stderr, "**************************************************************\n");
+ }
+#endif
+ if( _AD._syntax_errs + _AD._semantic_errs + _AD._warnings == 0 ) {
+ if (!_AD._quiet_mode)
+ fprintf(stderr,"No errors or warnings to report from phase-1 parse.\n" );
+ }
+ else {
+ if( _AD._syntax_errs ) { // Any syntax errors?
+ fprintf(stderr,"%s: Found %d syntax error", _buf._fp->_name, _AD._syntax_errs);
+ if( _AD._syntax_errs > 1 ) fprintf(stderr,"s.\n\n");
+ else fprintf(stderr,".\n\n");
+ }
+ if( _AD._semantic_errs ) { // Any semantic errors?
+ fprintf(stderr,"%s: Found %d semantic error", _buf._fp->_name, _AD._semantic_errs);
+ if( _AD._semantic_errs > 1 ) fprintf(stderr,"s.\n\n");
+ else fprintf(stderr,".\n\n");
+ }
+ if( _AD._warnings ) { // Any warnings?
+ fprintf(stderr,"%s: Found %d warning", _buf._fp->_name, _AD._warnings);
+ if( _AD._warnings > 1 ) fprintf(stderr,"s.\n\n");
+ else fprintf(stderr,".\n\n");
+ }
+ }
+ if (!_AD._quiet_mode)
+ fprintf(stderr,"-----------------------------------------------------------------------------\n");
+ _AD._TotalLines += linenum()-1; // -1 for overshoot in "nextline" routine
+
+ // Write out information we have stored
+ // // UNIXism == fsync(stderr);
+}
+
+//------------------------------parse------------------------------------------
+// Each top-level keyword should appear as the first non-whitespace on a line.
+//
+void ADLParser::parse() {
+ char *ident;
+
+ // Iterate over the lines in the file buffer parsing Level 1 objects
+ for( next_line(); _curline != NULL; next_line()) {
+ _ptr = _curline; // Reset ptr to start of new line
+ skipws(); // Skip any leading whitespace
+ ident = get_ident(); // Get first token
+ if (ident == NULL) { // Empty line
+ continue; // Get the next line
+ }
+ if (!strcmp(ident, "instruct")) instr_parse();
+ else if (!strcmp(ident, "operand")) oper_parse();
+ else if (!strcmp(ident, "opclass")) opclass_parse();
+ else if (!strcmp(ident, "ins_attrib")) ins_attr_parse();
+ else if (!strcmp(ident, "op_attrib")) op_attr_parse();
+ else if (!strcmp(ident, "source")) source_parse();
+ else if (!strcmp(ident, "source_hpp")) source_hpp_parse();
+ else if (!strcmp(ident, "register")) reg_parse();
+ else if (!strcmp(ident, "frame")) frame_parse();
+ else if (!strcmp(ident, "encode")) encode_parse();
+ else if (!strcmp(ident, "pipeline")) pipe_parse();
+ else if (!strcmp(ident, "definitions")) definitions_parse();
+ else if (!strcmp(ident, "peephole")) peep_parse();
+ else if (!strcmp(ident, "#line")) preproc_line();
+ else if (!strcmp(ident, "#define")) preproc_define();
+ else if (!strcmp(ident, "#undef")) preproc_undef();
+ else {
+ parse_err(SYNERR, "expected one of - instruct, operand, ins_attrib, op_attrib, source, register, pipeline, encode\n Found %s",ident);
+ }
+ }
+ // Add reg_class spill_regs after parsing.
+ RegisterForm *regBlock = _AD.get_registers();
+ if (regBlock == NULL) {
+ parse_err(SEMERR, "Did not declare 'register' definitions");
+ }
+ regBlock->addSpillRegClass();
+
+ // Done with parsing, check consistency.
+
+ if (_preproc_depth != 0) {
+ parse_err(SYNERR, "End of file inside #ifdef");
+ }
+
+ // AttributeForms ins_cost and op_cost must be defined for default behaviour
+ if (_globalNames[AttributeForm::_ins_cost] == NULL) {
+ parse_err(SEMERR, "Did not declare 'ins_cost' attribute");
+ }
+ if (_globalNames[AttributeForm::_op_cost] == NULL) {
+ parse_err(SEMERR, "Did not declare 'op_cost' attribute");
+ }
+}
+
+// ******************** Private Level 1 Parse Functions ********************
+//------------------------------instr_parse------------------------------------
+// Parse the contents of an instruction definition, build the InstructForm to
+// represent that instruction, and add it to the InstructForm list.
+void ADLParser::instr_parse(void) {
+ char *ident;
+ InstructForm *instr;
+ MatchRule *rule;
+ int match_rules_cnt = 0;
+
+ // First get the name of the instruction
+ if( (ident = get_unique_ident(_globalNames,"instruction")) == NULL )
+ return;
+ instr = new InstructForm(ident); // Create new instruction form
+ instr->_linenum = linenum();
+ _globalNames.Insert(ident, instr); // Add name to the name table
+ // Debugging Stuff
+ if (_AD._adl_debug > 1)
+ fprintf(stderr,"Parsing Instruction Form %s\n", ident);
+
+ // Then get the operands
+ skipws();
+ if (_curchar != '(') {
+ parse_err(SYNERR, "missing '(' in instruct definition\n");
+ }
+ // Parse the operand list
+ else get_oplist(instr->_parameters, instr->_localNames);
+ skipws(); // Skip leading whitespace
+ // Check for block delimiter
+ if ( (_curchar != '%')
+ || ( next_char(), (_curchar != '{')) ) {
+ parse_err(SYNERR, "missing '%%{' in instruction definition\n");
+ return;
+ }
+ next_char(); // Maintain the invariant
+ do {
+ ident = get_ident(); // Grab next identifier
+ if (ident == NULL) {
+ parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar);
+ continue;
+ }
+ if (!strcmp(ident, "predicate")) instr->_predicate = pred_parse();
+ else if (!strcmp(ident, "match")) {
+ // Allow one instruction have several match rules.
+ rule = instr->_matrule;
+ if (rule == NULL) {
+ // This is first match rule encountered
+ rule = match_parse(instr->_localNames);
+ if (rule) {
+ instr->_matrule = rule;
+ // Special case the treatment of Control instructions.
+ if( instr->is_ideal_control() ) {
+ // Control instructions return a special result, 'Universe'
+ rule->_result = "Universe";
+ }
+ // Check for commutative operations with tree operands.
+ matchrule_clone_and_swap(rule, instr->_ident, match_rules_cnt);
+ }
+ } else {
+ // Find the end of the match rule list
+ while (rule->_next != NULL)
+ rule = rule->_next;
+ // Add the new match rule to the list
+ rule->_next = match_parse(instr->_localNames);
+ if (rule->_next) {
+ rule = rule->_next;
+ if( instr->is_ideal_control() ) {
+ parse_err(SYNERR, "unique match rule expected for %s\n", rule->_name);
+ return;
+ }
+ assert(match_rules_cnt < 100," too many match rule clones");
+ char* buf = (char*) malloc(strlen(instr->_ident) + 4);
+ sprintf(buf, "%s_%d", instr->_ident, match_rules_cnt++);
+ rule->_result = buf;
+ // Check for commutative operations with tree operands.
+ matchrule_clone_and_swap(rule, instr->_ident, match_rules_cnt);
+ }
+ }
+ }
+ else if (!strcmp(ident, "encode")) {
+ parse_err(SYNERR, "Instructions specify ins_encode, not encode\n");
+ }
+ else if (!strcmp(ident, "ins_encode")) ins_encode_parse(*instr);
+ // Parse late expand keyword.
+ else if (!strcmp(ident, "postalloc_expand")) postalloc_expand_parse(*instr);
+ else if (!strcmp(ident, "opcode")) instr->_opcode = opcode_parse(instr);
+ else if (!strcmp(ident, "size")) instr->_size = size_parse(instr);
+ else if (!strcmp(ident, "effect")) effect_parse(instr);
+ else if (!strcmp(ident, "expand")) instr->_exprule = expand_parse(instr);
+ else if (!strcmp(ident, "rewrite")) instr->_rewrule = rewrite_parse();
+ else if (!strcmp(ident, "constraint")) {
+ parse_err(SYNERR, "Instructions do not specify a constraint\n");
+ }
+ else if (!strcmp(ident, "construct")) {
+ parse_err(SYNERR, "Instructions do not specify a construct\n");
+ }
+ else if (!strcmp(ident, "format")) instr->_format = format_parse();
+ else if (!strcmp(ident, "interface")) {
+ parse_err(SYNERR, "Instructions do not specify an interface\n");
+ }
+ else if (!strcmp(ident, "ins_pipe")) ins_pipe_parse(*instr);
+ else { // Done with staticly defined parts of instruction definition
+ // Check identifier to see if it is the name of an attribute
+ const Form *form = _globalNames[ident];
+ AttributeForm *attr = form ? form->is_attribute() : NULL;
+ if (attr && (attr->_atype == INS_ATTR)) {
+ // Insert the new attribute into the linked list.
+ Attribute *temp = attr_parse(ident);
+ temp->_next = instr->_attribs;
+ instr->_attribs = temp;
+ } else {
+ parse_err(SYNERR, "expected one of:\n predicate, match, encode, or the name of"
+ " an instruction attribute at %s\n", ident);
+ }
+ }
+ skipws();
+ } while(_curchar != '%');
+ next_char();
+ if (_curchar != '}') {
+ parse_err(SYNERR, "missing '%%}' in instruction definition\n");
+ return;
+ }
+ // Check for "Set" form of chain rule
+ adjust_set_rule(instr);
+ if (_AD._pipeline) {
+ // No pipe required for late expand.
+ if (instr->expands() || instr->postalloc_expands()) {
+ if (instr->_ins_pipe) {
+ parse_err(WARN, "ins_pipe and expand rule both specified for instruction \"%s\";"
+ " ins_pipe will be unused\n", instr->_ident);
+ }
+ } else {
+ if (!instr->_ins_pipe) {
+ parse_err(WARN, "No ins_pipe specified for instruction \"%s\"\n", instr->_ident);
+ }
+ }
+ }
+ // Add instruction to tail of instruction list
+ _AD.addForm(instr);
+
+ // Create instruction form for each additional match rule
+ rule = instr->_matrule;
+ if (rule != NULL) {
+ rule = rule->_next;
+ while (rule != NULL) {
+ ident = (char*)rule->_result;
+ InstructForm *clone = new InstructForm(ident, instr, rule); // Create new instruction form
+ _globalNames.Insert(ident, clone); // Add name to the name table
+ // Debugging Stuff
+ if (_AD._adl_debug > 1)
+ fprintf(stderr,"Parsing Instruction Form %s\n", ident);
+ // Check for "Set" form of chain rule
+ adjust_set_rule(clone);
+ // Add instruction to tail of instruction list
+ _AD.addForm(clone);
+ rule = rule->_next;
+ clone->_matrule->_next = NULL; // One match rule per clone
+ }
+ }
+}
+
+//------------------------------matchrule_clone_and_swap-----------------------
+// Check for commutative operations with subtree operands,
+// create clones and swap operands.
+void ADLParser::matchrule_clone_and_swap(MatchRule* rule, const char* instr_ident, int& match_rules_cnt) {
+ // Check for commutative operations with tree operands.
+ int count = 0;
+ rule->count_commutative_op(count);
+ if (count > 0) {
+ // Clone match rule and swap commutative operation's operands.
+ rule->matchrule_swap_commutative_op(instr_ident, count, match_rules_cnt);
+ }
+}
+
+//------------------------------adjust_set_rule--------------------------------
+// Check for "Set" form of chain rule
+void ADLParser::adjust_set_rule(InstructForm *instr) {
+ if (instr->_matrule == NULL || instr->_matrule->_rChild == NULL) return;
+ const char *rch = instr->_matrule->_rChild->_opType;
+ const Form *frm = _globalNames[rch];
+ if( (! strcmp(instr->_matrule->_opType,"Set")) &&
+ frm && frm->is_operand() && (! frm->ideal_only()) ) {
+ // Previous implementation, which missed leaP*, but worked for loadCon*
+ unsigned position = 0;
+ const char *result = NULL;
+ const char *name = NULL;
+ const char *optype = NULL;
+ MatchNode *right = instr->_matrule->_rChild;
+ if (right->base_operand(position, _globalNames, result, name, optype)) {
+ position = 1;
+ const char *result2 = NULL;
+ const char *name2 = NULL;
+ const char *optype2 = NULL;
+ // Can not have additional base operands in right side of match!
+ if ( ! right->base_operand( position, _globalNames, result2, name2, optype2) ) {
+ if (instr->_predicate != NULL)
+ parse_err(SYNERR, "ADLC does not support instruction chain rules with predicates");
+ // Chain from input _ideal_operand_type_,
+ // Needed for shared roots of match-trees
+ ChainList *lst = (ChainList *)_AD._chainRules[optype];
+ if (lst == NULL) {
+ lst = new ChainList();
+ _AD._chainRules.Insert(optype, lst);
+ }
+ if (!lst->search(instr->_matrule->_lChild->_opType)) {
+ const char *cost = instr->cost();
+ if (cost == NULL) {
+ cost = ((AttributeForm*)_globalNames[AttributeForm::_ins_cost])->_attrdef;
+ }
+ // The ADLC does not support chaining from the ideal operand type
+ // of a predicated user-defined operand
+ if( frm->is_operand() == NULL || frm->is_operand()->_predicate == NULL ) {
+ lst->insert(instr->_matrule->_lChild->_opType,cost,instr->_ident);
+ }
+ }
+ // Chain from input _user_defined_operand_type_,
+ lst = (ChainList *)_AD._chainRules[result];
+ if (lst == NULL) {
+ lst = new ChainList();
+ _AD._chainRules.Insert(result, lst);
+ }
+ if (!lst->search(instr->_matrule->_lChild->_opType)) {
+ const char *cost = instr->cost();
+ if (cost == NULL) {
+ cost = ((AttributeForm*)_globalNames[AttributeForm::_ins_cost])->_attrdef;
+ }
+ // It is safe to chain from the top-level user-defined operand even
+ // if it has a predicate, since the predicate is checked before
+ // the user-defined type is available.
+ lst->insert(instr->_matrule->_lChild->_opType,cost,instr->_ident);
+ }
+ } else {
+ // May have instruction chain rule if root of right-tree is an ideal
+ OperandForm *rightOp = _globalNames[right->_opType]->is_operand();
+ if( rightOp ) {
+ const Form *rightRoot = _globalNames[rightOp->_matrule->_opType];
+ if( rightRoot && rightRoot->ideal_only() ) {
+ const char *chain_op = NULL;
+ if( rightRoot->is_instruction() )
+ chain_op = rightOp->_ident;
+ if( chain_op ) {
+ // Look-up the operation in chain rule table
+ ChainList *lst = (ChainList *)_AD._chainRules[chain_op];
+ if (lst == NULL) {
+ lst = new ChainList();
+ _AD._chainRules.Insert(chain_op, lst);
+ }
+ // if (!lst->search(instr->_matrule->_lChild->_opType)) {
+ const char *cost = instr->cost();
+ if (cost == NULL) {
+ cost = ((AttributeForm*)_globalNames[AttributeForm::_ins_cost])->_attrdef;
+ }
+ // This chains from a top-level operand whose predicate, if any,
+ // has been checked.
+ lst->insert(instr->_matrule->_lChild->_opType,cost,instr->_ident);
+ // }
+ }
+ }
+ }
+ } // end chain rule from right-tree's ideal root
+ }
+ }
+}
+
+
+//------------------------------oper_parse-------------------------------------
+void ADLParser::oper_parse(void) {
+ char *ident;
+ OperandForm *oper;
+ AttributeForm *attr;
+ MatchRule *rule;
+
+ // First get the name of the operand
+ skipws();
+ if( (ident = get_unique_ident(_globalNames,"operand")) == NULL )
+ return;
+ oper = new OperandForm(ident); // Create new operand form
+ oper->_linenum = linenum();
+ _globalNames.Insert(ident, oper); // Add name to the name table
+
+ // Debugging Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr,"Parsing Operand Form %s\n", ident);
+
+ // Get the component operands
+ skipws();
+ if (_curchar != '(') {
+ parse_err(SYNERR, "missing '(' in operand definition\n");
+ return;
+ }
+ else get_oplist(oper->_parameters, oper->_localNames); // Parse the component operand list
+ skipws();
+ // Check for block delimiter
+ if ((_curchar != '%') || (*(_ptr+1) != '{')) { // If not open block
+ parse_err(SYNERR, "missing '%%{' in operand definition\n");
+ return;
+ }
+ next_char(); next_char(); // Skip over "%{" symbol
+ do {
+ ident = get_ident(); // Grab next identifier
+ if (ident == NULL) {
+ parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar);
+ continue;
+ }
+ if (!strcmp(ident, "predicate")) oper->_predicate = pred_parse();
+ else if (!strcmp(ident, "match")) {
+ // Find the end of the match rule list
+ rule = oper->_matrule;
+ if (rule) {
+ while (rule->_next) rule = rule->_next;
+ // Add the new match rule to the list
+ rule->_next = match_parse(oper->_localNames);
+ if (rule->_next) {
+ rule->_next->_result = oper->_ident;
+ }
+ }
+ else {
+ // This is first match rule encountered
+ oper->_matrule = match_parse(oper->_localNames);
+ if (oper->_matrule) {
+ oper->_matrule->_result = oper->_ident;
+ }
+ }
+ }
+ else if (!strcmp(ident, "encode")) oper->_interface = interface_parse();
+ else if (!strcmp(ident, "ins_encode")) {
+ parse_err(SYNERR, "Operands specify 'encode', not 'ins_encode'\n");
+ }
+ else if (!strcmp(ident, "opcode")) {
+ parse_err(SYNERR, "Operands do not specify an opcode\n");
+ }
+ else if (!strcmp(ident, "effect")) {
+ parse_err(SYNERR, "Operands do not specify an effect\n");
+ }
+ else if (!strcmp(ident, "expand")) {
+ parse_err(SYNERR, "Operands do not specify an expand\n");
+ }
+ else if (!strcmp(ident, "rewrite")) {
+ parse_err(SYNERR, "Operands do not specify a rewrite\n");
+ }
+ else if (!strcmp(ident, "constraint"))oper->_constraint= constraint_parse();
+ else if (!strcmp(ident, "construct")) oper->_construct = construct_parse();
+ else if (!strcmp(ident, "format")) oper->_format = format_parse();
+ else if (!strcmp(ident, "interface")) oper->_interface = interface_parse();
+ // Check identifier to see if it is the name of an attribute
+ else if (((attr = _globalNames[ident]->is_attribute()) != NULL) &&
+ (attr->_atype == OP_ATTR)) oper->_attribs = attr_parse(ident);
+ else {
+ parse_err(SYNERR, "expected one of - constraint, predicate, match, encode, format, construct, or the name of a defined operand attribute at %s\n", ident);
+ }
+ skipws();
+ } while(_curchar != '%');
+ next_char();
+ if (_curchar != '}') {
+ parse_err(SYNERR, "missing '%%}' in operand definition\n");
+ return;
+ }
+ // Add operand to tail of operand list
+ _AD.addForm(oper);
+}
+
+//------------------------------opclass_parse----------------------------------
+// Operand Classes are a block with a comma delimited list of operand names
+void ADLParser::opclass_parse(void) {
+ char *ident;
+ OpClassForm *opc;
+ OperandForm *opForm;
+
+ // First get the name of the operand class
+ skipws();
+ if( (ident = get_unique_ident(_globalNames,"opclass")) == NULL )
+ return;
+ opc = new OpClassForm(ident); // Create new operand class form
+ _globalNames.Insert(ident, opc); // Add name to the name table
+
+ // Debugging Stuff
+ if (_AD._adl_debug > 1)
+ fprintf(stderr,"Parsing Operand Class Form %s\n", ident);
+
+ // Get the list of operands
+ skipws();
+ if (_curchar != '(') {
+ parse_err(SYNERR, "missing '(' in operand definition\n");
+ return;
+ }
+ do {
+ next_char(); // Skip past open paren or comma
+ ident = get_ident(); // Grab next identifier
+ if (ident == NULL) {
+ parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar);
+ continue;
+ }
+ // Check identifier to see if it is the name of an operand
+ const Form *form = _globalNames[ident];
+ opForm = form ? form->is_operand() : NULL;
+ if ( opForm ) {
+ opc->_oplst.addName(ident); // Add operand to opclass list
+ opForm->_classes.addName(opc->_ident);// Add opclass to operand list
+ }
+ else {
+ parse_err(SYNERR, "expected name of a defined operand at %s\n", ident);
+ }
+ skipws(); // skip trailing whitespace
+ } while (_curchar == ','); // Check for the comma
+ // Check for closing ')'
+ if (_curchar != ')') {
+ parse_err(SYNERR, "missing ')' or ',' in opclass definition\n");
+ return;
+ }
+ next_char(); // Consume the ')'
+ skipws();
+ // Check for closing ';'
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing ';' in opclass definition\n");
+ return;
+ }
+ next_char(); // Consume the ';'
+ // Add operand to tail of operand list
+ _AD.addForm(opc);
+}
+
+//------------------------------ins_attr_parse---------------------------------
+void ADLParser::ins_attr_parse(void) {
+ char *ident;
+ char *aexpr;
+ AttributeForm *attrib;
+
+ // get name for the instruction attribute
+ skipws(); // Skip leading whitespace
+ if( (ident = get_unique_ident(_globalNames,"inst_attrib")) == NULL )
+ return;
+ // Debugging Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr,"Parsing Ins_Attribute Form %s\n", ident);
+
+ // Get default value of the instruction attribute
+ skipws(); // Skip whitespace
+ if ((aexpr = get_paren_expr("attribute default expression string")) == NULL) {
+ parse_err(SYNERR, "missing '(' in ins_attrib definition\n");
+ return;
+ }
+ // Debug Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr,"Attribute Expression: %s\n", aexpr);
+
+ // Check for terminator
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing ';' in ins_attrib definition\n");
+ return;
+ }
+ next_char(); // Advance past the ';'
+
+ // Construct the attribute, record global name, and store in ArchDesc
+ attrib = new AttributeForm(ident, INS_ATTR, aexpr);
+ _globalNames.Insert(ident, attrib); // Add name to the name table
+ _AD.addForm(attrib);
+}
+
+//------------------------------op_attr_parse----------------------------------
+void ADLParser::op_attr_parse(void) {
+ char *ident;
+ char *aexpr;
+ AttributeForm *attrib;
+
+ // get name for the operand attribute
+ skipws(); // Skip leading whitespace
+ if( (ident = get_unique_ident(_globalNames,"op_attrib")) == NULL )
+ return;
+ // Debugging Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr,"Parsing Op_Attribute Form %s\n", ident);
+
+ // Get default value of the instruction attribute
+ skipws(); // Skip whitespace
+ if ((aexpr = get_paren_expr("attribute default expression string")) == NULL) {
+ parse_err(SYNERR, "missing '(' in op_attrib definition\n");
+ return;
+ }
+ // Debug Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr,"Attribute Expression: %s\n", aexpr);
+
+ // Check for terminator
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing ';' in op_attrib definition\n");
+ return;
+ }
+ next_char(); // Advance past the ';'
+
+ // Construct the attribute, record global name, and store in ArchDesc
+ attrib = new AttributeForm(ident, OP_ATTR, aexpr);
+ _globalNames.Insert(ident, attrib);
+ _AD.addForm(attrib);
+}
+
+//------------------------------definitions_parse-----------------------------------
+void ADLParser::definitions_parse(void) {
+ skipws(); // Skip leading whitespace
+ if (_curchar == '%' && *(_ptr+1) == '{') {
+ next_char(); next_char(); // Skip "%{"
+ skipws();
+ while (_curchar != '%' && *(_ptr+1) != '}') {
+ // Process each definition until finding closing string "%}"
+ char *token = get_ident();
+ if (token == NULL) {
+ parse_err(SYNERR, "missing identifier inside definitions block.\n");
+ return;
+ }
+ if (strcmp(token,"int_def")==0) { int_def_parse(); }
+ // if (strcmp(token,"str_def")==0) { str_def_parse(); }
+ skipws();
+ }
+ }
+ else {
+ parse_err(SYNERR, "Missing %%{ ... %%} block after definitions keyword.\n");
+ return;
+ }
+}
+
+//------------------------------int_def_parse----------------------------------
+// Parse Example:
+// int_def MEMORY_REF_COST ( 200, DEFAULT_COST * 2);
+// <keyword> <name> ( <int_value>, <description> );
+//
+void ADLParser::int_def_parse(void) {
+ char *name = NULL; // Name of definition
+ char *value = NULL; // its value,
+ int int_value = -1; // positive values only
+ char *description = NULL; // textual description
+
+ // Get definition name
+ skipws(); // Skip whitespace
+ name = get_ident();
+ if (name == NULL) {
+ parse_err(SYNERR, "missing definition name after int_def\n");
+ return;
+ }
+
+ // Check for value of int_def dname( integer_value [, string_expression ] )
+ skipws();
+ if (_curchar == '(') {
+
+ // Parse the integer value.
+ next_char();
+ value = get_ident();
+ if (value == NULL) {
+ parse_err(SYNERR, "missing value in int_def\n");
+ return;
+ }
+ if( !is_int_token(value, int_value) ) {
+ parse_err(SYNERR, "value in int_def is not recognized as integer\n");
+ return;
+ }
+ skipws();
+
+ // Check for description
+ if (_curchar == ',') {
+ next_char(); // skip ','
+
+ description = get_expr("int_def description", ")");
+ if (description == NULL) {
+ parse_err(SYNERR, "invalid or missing description in int_def\n");
+ return;
+ }
+ trim(description);
+ }
+
+ if (_curchar != ')') {
+ parse_err(SYNERR, "missing ')' in register definition statement\n");
+ return;
+ }
+ next_char();
+ }
+
+ // Check for closing ';'
+ skipws();
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing ';' after int_def\n");
+ return;
+ }
+ next_char(); // move past ';'
+
+ // Debug Stuff
+ if (_AD._adl_debug > 1) {
+ fprintf(stderr,"int_def: %s ( %s, %s )\n", name,
+ (value), (description ? description : ""));
+ }
+
+ // Record new definition.
+ Expr *expr = new Expr(name, description, int_value, int_value);
+ const Expr *old_expr = _AD.globalDefs().define(name, expr);
+ if (old_expr != NULL) {
+ parse_err(SYNERR, "Duplicate definition\n");
+ return;
+ }
+
+ return;
+}
+
+
+//------------------------------source_parse-----------------------------------
+void ADLParser::source_parse(void) {
+ SourceForm *source; // Encode class for instruction/operand
+ char *rule = NULL; // String representation of encode rule
+
+ skipws(); // Skip leading whitespace
+ if ( (rule = find_cpp_block("source block")) == NULL ) {
+ parse_err(SYNERR, "incorrect or missing block for 'source'.\n");
+ return;
+ }
+ // Debug Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr,"Source Form: %s\n", rule);
+
+ source = new SourceForm(rule); // Build new Source object
+ _AD.addForm(source);
+ // skipws();
+}
+
+//------------------------------source_hpp_parse-------------------------------
+// Parse a source_hpp %{ ... %} block.
+// The code gets stuck into the ad_<arch>.hpp file.
+// If the source_hpp block appears before the register block in the AD
+// file, it goes up at the very top of the ad_<arch>.hpp file, so that
+// it can be used by register encodings, etc. Otherwise, it goes towards
+// the bottom, where it's useful as a global definition to *.cpp files.
+void ADLParser::source_hpp_parse(void) {
+ char *rule = NULL; // String representation of encode rule
+
+ skipws(); // Skip leading whitespace
+ if ( (rule = find_cpp_block("source_hpp block")) == NULL ) {
+ parse_err(SYNERR, "incorrect or missing block for 'source_hpp'.\n");
+ return;
+ }
+ // Debug Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr,"Header Form: %s\n", rule);
+
+ if (_AD.get_registers() == NULL) {
+ // Very early in the file, before reg_defs, we collect pre-headers.
+ PreHeaderForm* pre_header = new PreHeaderForm(rule);
+ _AD.addForm(pre_header);
+ } else {
+ // Normally, we collect header info, placed at the bottom of the hpp file.
+ HeaderForm* header = new HeaderForm(rule);
+ _AD.addForm(header);
+ }
+}
+
+//------------------------------reg_parse--------------------------------------
+void ADLParser::reg_parse(void) {
+ RegisterForm *regBlock = _AD.get_registers(); // Information about registers encoding
+ if (regBlock == NULL) {
+ // Create the RegisterForm for the architecture description.
+ regBlock = new RegisterForm(); // Build new Source object
+ _AD.addForm(regBlock);
+ }
+
+ skipws(); // Skip leading whitespace
+ if (_curchar == '%' && *(_ptr+1) == '{') {
+ next_char(); next_char(); // Skip "%{"
+ skipws();
+ while (_curchar != '%' && *(_ptr+1) != '}') {
+ char *token = get_ident();
+ if (token == NULL) {
+ parse_err(SYNERR, "missing identifier inside register block.\n");
+ return;
+ }
+ if (strcmp(token,"reg_def")==0) { reg_def_parse(); }
+ else if (strcmp(token,"reg_class")==0) { reg_class_parse(); }
+ else if (strcmp(token, "reg_class_dynamic") == 0) { reg_class_dynamic_parse(); }
+ else if (strcmp(token,"alloc_class")==0) { alloc_class_parse(); }
+ else if (strcmp(token,"#define")==0) { preproc_define(); }
+ else { parse_err(SYNERR, "bad token %s inside register block.\n", token); break; }
+ skipws();
+ }
+ }
+ else {
+ parse_err(SYNERR, "Missing %c{ ... %c} block after register keyword.\n",'%','%');
+ return;
+ }
+}
+
+//------------------------------encode_parse-----------------------------------
+void ADLParser::encode_parse(void) {
+ EncodeForm *encBlock; // Information about instruction/operand encoding
+
+ _AD.getForm(&encBlock);
+ if ( encBlock == NULL) {
+ // Create the EncodeForm for the architecture description.
+ encBlock = new EncodeForm(); // Build new Source object
+ _AD.addForm(encBlock);
+ }
+
+ skipws(); // Skip leading whitespace
+ if (_curchar == '%' && *(_ptr+1) == '{') {
+ next_char(); next_char(); // Skip "%{"
+ skipws();
+ while (_curchar != '%' && *(_ptr+1) != '}') {
+ char *token = get_ident();
+ if (token == NULL) {
+ parse_err(SYNERR, "missing identifier inside encoding block.\n");
+ return;
+ }
+ if (strcmp(token,"enc_class")==0) { enc_class_parse(); }
+ skipws();
+ }
+ }
+ else {
+ parse_err(SYNERR, "Missing %c{ ... %c} block after encode keyword.\n",'%','%');
+ return;
+ }
+}
+
+//------------------------------enc_class_parse--------------------------------
+void ADLParser::enc_class_parse(void) {
+ char *ec_name; // Name of encoding class being defined
+
+ // Get encoding class name
+ skipws(); // Skip whitespace
+ ec_name = get_ident();
+ if (ec_name == NULL) {
+ parse_err(SYNERR, "missing encoding class name after encode.\n");
+ return;
+ }
+
+ EncClass *encoding = _AD._encode->add_EncClass(ec_name);
+ encoding->_linenum = linenum();
+
+ skipws(); // Skip leading whitespace
+ // Check for optional parameter list
+ if (_curchar == '(') {
+ do {
+ char *pType = NULL; // parameter type
+ char *pName = NULL; // parameter name
+
+ next_char(); // skip open paren & comma characters
+ skipws();
+ if (_curchar == ')') break;
+
+ // Get parameter type
+ pType = get_ident();
+ if (pType == NULL) {
+ parse_err(SYNERR, "parameter type expected at %c\n", _curchar);
+ return;
+ }
+
+ skipws();
+ // Get parameter name
+ pName = get_ident();
+ if (pName == NULL) {
+ parse_err(SYNERR, "parameter name expected at %c\n", _curchar);
+ return;
+ }
+
+ // Record parameter type and name
+ encoding->add_parameter( pType, pName );
+
+ skipws();
+ } while(_curchar == ',');
+
+ if (_curchar != ')') parse_err(SYNERR, "missing ')'\n");
+ else {
+ next_char(); // Skip ')'
+ }
+ } // Done with parameter list
+
+ skipws();
+ // Check for block starting delimiters
+ if ((_curchar != '%') || (*(_ptr+1) != '{')) { // If not open block
+ parse_err(SYNERR, "missing '%c{' in enc_class definition\n", '%');
+ return;
+ }
+ next_char(); // Skip '%'
+ next_char(); // Skip '{'
+
+ enc_class_parse_block(encoding, ec_name);
+}
+
+
+void ADLParser::enc_class_parse_block(EncClass* encoding, char* ec_name) {
+ skipws_no_preproc(); // Skip leading whitespace
+ // Prepend location descriptor, for debugging; cf. ADLParser::find_cpp_block
+ if (_AD._adlocation_debug) {
+ encoding->add_code(get_line_string());
+ }
+
+ // Collect the parts of the encode description
+ // (1) strings that are passed through to output
+ // (2) replacement/substitution variable, preceeded by a '$'
+ while ( (_curchar != '%') && (*(_ptr+1) != '}') ) {
+
+ // (1)
+ // Check if there is a string to pass through to output
+ char *start = _ptr; // Record start of the next string
+ while ((_curchar != '$') && ((_curchar != '%') || (*(_ptr+1) != '}')) ) {
+ // If at the start of a comment, skip past it
+ if( (_curchar == '/') && ((*(_ptr+1) == '/') || (*(_ptr+1) == '*')) ) {
+ skipws_no_preproc();
+ } else {
+ // ELSE advance to the next character, or start of the next line
+ next_char_or_line();
+ }
+ }
+ // If a string was found, terminate it and record in EncClass
+ if ( start != _ptr ) {
+ *_ptr = '\0'; // Terminate the string
+ encoding->add_code(start);
+ }
+
+ // (2)
+ // If we are at a replacement variable,
+ // copy it and record in EncClass
+ if (_curchar == '$') {
+ // Found replacement Variable
+ char* rep_var = get_rep_var_ident_dup();
+ // Add flag to _strings list indicating we should check _rep_vars
+ encoding->add_rep_var(rep_var);
+ }
+ } // end while part of format description
+ next_char(); // Skip '%'
+ next_char(); // Skip '}'
+
+ skipws();
+
+ if (_AD._adlocation_debug) {
+ encoding->add_code(end_line_marker());
+ }
+
+ // Debug Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr,"EncodingClass Form: %s\n", ec_name);
+}
+
+//------------------------------frame_parse-----------------------------------
+void ADLParser::frame_parse(void) {
+ FrameForm *frame; // Information about stack-frame layout
+ char *desc = NULL; // String representation of frame
+
+ skipws(); // Skip leading whitespace
+
+ frame = new FrameForm(); // Build new Frame object
+ // Check for open block sequence
+ skipws(); // Skip leading whitespace
+ if (_curchar == '%' && *(_ptr+1) == '{') {
+ next_char(); next_char(); // Skip "%{"
+ skipws();
+ while (_curchar != '%' && *(_ptr+1) != '}') {
+ char *token = get_ident();
+ if (token == NULL) {
+ parse_err(SYNERR, "missing identifier inside frame block.\n");
+ return;
+ }
+ if (strcmp(token,"stack_direction")==0) {
+ stack_dir_parse(frame);
+ }
+ if (strcmp(token,"sync_stack_slots")==0) {
+ sync_stack_slots_parse(frame);
+ }
+ if (strcmp(token,"frame_pointer")==0) {
+ frame_pointer_parse(frame, false);
+ }
+ if (strcmp(token,"interpreter_frame_pointer")==0) {
+ interpreter_frame_pointer_parse(frame, false);
+ }
+ if (strcmp(token,"inline_cache_reg")==0) {
+ inline_cache_parse(frame, false);
+ }
+ if (strcmp(token,"compiler_method_oop_reg")==0) {
+ parse_err(WARN, "Using obsolete Token, compiler_method_oop_reg");
+ skipws();
+ }
+ if (strcmp(token,"interpreter_method_oop_reg")==0) {
+ interpreter_method_oop_parse(frame, false);
+ }
+ if (strcmp(token,"cisc_spilling_operand_name")==0) {
+ cisc_spilling_operand_name_parse(frame, false);
+ }
+ if (strcmp(token,"stack_alignment")==0) {
+ stack_alignment_parse(frame);
+ }
+ if (strcmp(token,"return_addr")==0) {
+ return_addr_parse(frame, false);
+ }
+ if (strcmp(token,"in_preserve_stack_slots")==0) {
+ preserve_stack_parse(frame);
+ }
+ if (strcmp(token,"out_preserve_stack_slots")==0) {
+ parse_err(WARN, "Using obsolete token, out_preserve_stack_slots");
+ skipws();
+ }
+ if (strcmp(token,"varargs_C_out_slots_killed")==0) {
+ frame->_varargs_C_out_slots_killed = parse_one_arg("varargs C out slots killed");
+ }
+ if (strcmp(token,"calling_convention")==0) {
+ frame->_calling_convention = calling_convention_parse();
+ }
+ if (strcmp(token,"return_value")==0) {
+ frame->_return_value = return_value_parse();
+ }
+ if (strcmp(token,"c_frame_pointer")==0) {
+ frame_pointer_parse(frame, true);
+ }
+ if (strcmp(token,"c_return_addr")==0) {
+ return_addr_parse(frame, true);
+ }
+ if (strcmp(token,"c_calling_convention")==0) {
+ frame->_c_calling_convention = calling_convention_parse();
+ }
+ if (strcmp(token,"c_return_value")==0) {
+ frame->_c_return_value = return_value_parse();
+ }
+
+ skipws();
+ }
+ }
+ else {
+ parse_err(SYNERR, "Missing %c{ ... %c} block after encode keyword.\n",'%','%');
+ return;
+ }
+ // All Java versions are required, native versions are optional
+ if(frame->_frame_pointer == NULL) {
+ parse_err(SYNERR, "missing frame pointer definition in frame section.\n");
+ return;
+ }
+ // !!!!! !!!!!
+ // if(frame->_interpreter_frame_ptr_reg == NULL) {
+ // parse_err(SYNERR, "missing interpreter frame pointer definition in frame section.\n");
+ // return;
+ // }
+ if(frame->_alignment == NULL) {
+ parse_err(SYNERR, "missing alignment definition in frame section.\n");
+ return;
+ }
+ if(frame->_return_addr == NULL) {
+ parse_err(SYNERR, "missing return address location in frame section.\n");
+ return;
+ }
+ if(frame->_in_preserve_slots == NULL) {
+ parse_err(SYNERR, "missing stack slot preservation definition in frame section.\n");
+ return;
+ }
+ if(frame->_varargs_C_out_slots_killed == NULL) {
+ parse_err(SYNERR, "missing varargs C out slots killed definition in frame section.\n");
+ return;
+ }
+ if(frame->_calling_convention == NULL) {
+ parse_err(SYNERR, "missing calling convention definition in frame section.\n");
+ return;
+ }
+ if(frame->_return_value == NULL) {
+ parse_err(SYNERR, "missing return value definition in frame section.\n");
+ return;
+ }
+ // Fill natives in identically with the Java versions if not present.
+ if(frame->_c_frame_pointer == NULL) {
+ frame->_c_frame_pointer = frame->_frame_pointer;
+ }
+ if(frame->_c_return_addr == NULL) {
+ frame->_c_return_addr = frame->_return_addr;
+ frame->_c_return_addr_loc = frame->_return_addr_loc;
+ }
+ if(frame->_c_calling_convention == NULL) {
+ frame->_c_calling_convention = frame->_calling_convention;
+ }
+ if(frame->_c_return_value == NULL) {
+ frame->_c_return_value = frame->_return_value;
+ }
+
+ // Debug Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr,"Frame Form: %s\n", desc);
+
+ // Create the EncodeForm for the architecture description.
+ _AD.addForm(frame);
+ // skipws();
+}
+
+//------------------------------stack_dir_parse--------------------------------
+void ADLParser::stack_dir_parse(FrameForm *frame) {
+ char *direction = parse_one_arg("stack direction entry");
+ if (strcmp(direction, "TOWARDS_LOW") == 0) {
+ frame->_direction = false;
+ }
+ else if (strcmp(direction, "TOWARDS_HIGH") == 0) {
+ frame->_direction = true;
+ }
+ else {
+ parse_err(SYNERR, "invalid value inside stack direction entry.\n");
+ return;
+ }
+}
+
+//------------------------------sync_stack_slots_parse-------------------------
+void ADLParser::sync_stack_slots_parse(FrameForm *frame) {
+ // Assign value into frame form
+ frame->_sync_stack_slots = parse_one_arg("sync stack slots entry");
+}
+
+//------------------------------frame_pointer_parse----------------------------
+void ADLParser::frame_pointer_parse(FrameForm *frame, bool native) {
+ char *frame_pointer = parse_one_arg("frame pointer entry");
+ // Assign value into frame form
+ if (native) { frame->_c_frame_pointer = frame_pointer; }
+ else { frame->_frame_pointer = frame_pointer; }
+}
+
+//------------------------------interpreter_frame_pointer_parse----------------------------
+void ADLParser::interpreter_frame_pointer_parse(FrameForm *frame, bool native) {
+ frame->_interpreter_frame_pointer_reg = parse_one_arg("interpreter frame pointer entry");
+}
+
+//------------------------------inline_cache_parse-----------------------------
+void ADLParser::inline_cache_parse(FrameForm *frame, bool native) {
+ frame->_inline_cache_reg = parse_one_arg("inline cache reg entry");
+}
+
+//------------------------------interpreter_method_oop_parse------------------
+void ADLParser::interpreter_method_oop_parse(FrameForm *frame, bool native) {
+ frame->_interpreter_method_oop_reg = parse_one_arg("method oop reg entry");
+}
+
+//------------------------------cisc_spilling_operand_parse---------------------
+void ADLParser::cisc_spilling_operand_name_parse(FrameForm *frame, bool native) {
+ frame->_cisc_spilling_operand_name = parse_one_arg("cisc spilling operand name");
+}
+
+//------------------------------stack_alignment_parse--------------------------
+void ADLParser::stack_alignment_parse(FrameForm *frame) {
+ char *alignment = parse_one_arg("stack alignment entry");
+ // Assign value into frame
+ frame->_alignment = alignment;
+}
+
+//------------------------------parse_one_arg-------------------------------
+char *ADLParser::parse_one_arg(const char *description) {
+ char *token = NULL;
+ if(_curchar == '(') {
+ next_char();
+ skipws();
+ token = get_expr(description, ")");
+ if (token == NULL) {
+ parse_err(SYNERR, "missing value inside %s.\n", description);
+ return NULL;
+ }
+ next_char(); // skip the close paren
+ if(_curchar != ';') { // check for semi-colon
+ parse_err(SYNERR, "missing %c in.\n", ';', description);
+ return NULL;
+ }
+ next_char(); // skip the semi-colon
+ }
+ else {
+ parse_err(SYNERR, "Missing %c in.\n", '(', description);
+ return NULL;
+ }
+
+ trim(token);
+ return token;
+}
+
+//------------------------------return_addr_parse------------------------------
+void ADLParser::return_addr_parse(FrameForm *frame, bool native) {
+ bool in_register = true;
+ if(_curchar == '(') {
+ next_char();
+ skipws();
+ char *token = get_ident();
+ if (token == NULL) {
+ parse_err(SYNERR, "missing value inside return address entry.\n");
+ return;
+ }
+ // check for valid values for stack/register
+ if (strcmp(token, "REG") == 0) {
+ in_register = true;
+ }
+ else if (strcmp(token, "STACK") == 0) {
+ in_register = false;
+ }
+ else {
+ parse_err(SYNERR, "invalid value inside return_address entry.\n");
+ return;
+ }
+ if (native) { frame->_c_return_addr_loc = in_register; }
+ else { frame->_return_addr_loc = in_register; }
+
+ // Parse expression that specifies register or stack position
+ skipws();
+ char *token2 = get_expr("return address entry", ")");
+ if (token2 == NULL) {
+ parse_err(SYNERR, "missing value inside return address entry.\n");
+ return;
+ }
+ next_char(); // skip the close paren
+ if (native) { frame->_c_return_addr = token2; }
+ else { frame->_return_addr = token2; }
+
+ if(_curchar != ';') { // check for semi-colon
+ parse_err(SYNERR, "missing %c in return address entry.\n", ';');
+ return;
+ }
+ next_char(); // skip the semi-colon
+ }
+ else {
+ parse_err(SYNERR, "Missing %c in return_address entry.\n", '(');
+ }
+}
+
+//------------------------------preserve_stack_parse---------------------------
+void ADLParser::preserve_stack_parse(FrameForm *frame) {
+ if(_curchar == '(') {
+ char *token = get_paren_expr("preserve_stack_slots");
+ frame->_in_preserve_slots = token;
+
+ if(_curchar != ';') { // check for semi-colon
+ parse_err(SYNERR, "missing %c in preserve stack slot entry.\n", ';');
+ return;
+ }
+ next_char(); // skip the semi-colon
+ }
+ else {
+ parse_err(SYNERR, "Missing %c in preserve stack slot entry.\n", '(');
+ }
+}
+
+//------------------------------calling_convention_parse-----------------------
+char *ADLParser::calling_convention_parse() {
+ char *desc = NULL; // String representation of calling_convention
+
+ skipws(); // Skip leading whitespace
+ if ( (desc = find_cpp_block("calling convention block")) == NULL ) {
+ parse_err(SYNERR, "incorrect or missing block for 'calling_convention'.\n");
+ }
+ return desc;
+}
+
+//------------------------------return_value_parse-----------------------------
+char *ADLParser::return_value_parse() {
+ char *desc = NULL; // String representation of calling_convention
+
+ skipws(); // Skip leading whitespace
+ if ( (desc = find_cpp_block("return value block")) == NULL ) {
+ parse_err(SYNERR, "incorrect or missing block for 'return_value'.\n");
+ }
+ return desc;
+}
+
+//------------------------------ins_pipe_parse---------------------------------
+void ADLParser::ins_pipe_parse(InstructForm &instr) {
+ char * ident;
+
+ skipws();
+ if ( _curchar != '(' ) { // Check for delimiter
+ parse_err(SYNERR, "missing \"(\" in ins_pipe definition\n");
+ return;
+ }
+
+ next_char();
+ ident = get_ident(); // Grab next identifier
+
+ if (ident == NULL) {
+ parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar);
+ return;
+ }
+
+ skipws();
+ if ( _curchar != ')' ) { // Check for delimiter
+ parse_err(SYNERR, "missing \")\" in ins_pipe definition\n");
+ return;
+ }
+
+ next_char(); // skip the close paren
+ if(_curchar != ';') { // check for semi-colon
+ parse_err(SYNERR, "missing %c in return value entry.\n", ';');
+ return;
+ }
+ next_char(); // skip the semi-colon
+
+ // Check ident for validity
+ if (_AD._pipeline && !_AD._pipeline->_classlist.search(ident)) {
+ parse_err(SYNERR, "\"%s\" is not a valid pipeline class\n", ident);
+ return;
+ }
+
+ // Add this instruction to the list in the pipeline class
+ _AD._pipeline->_classdict[ident]->is_pipeclass()->_instructs.addName(instr._ident);
+
+ // Set the name of the pipeline class in the instruction
+ instr._ins_pipe = ident;
+ return;
+}
+
+//------------------------------pipe_parse-------------------------------------
+void ADLParser::pipe_parse(void) {
+ PipelineForm *pipeline; // Encode class for instruction/operand
+ char * ident;
+
+ pipeline = new PipelineForm(); // Build new Source object
+ _AD.addForm(pipeline);
+
+ skipws(); // Skip leading whitespace
+ // Check for block delimiter
+ if ( (_curchar != '%')
+ || ( next_char(), (_curchar != '{')) ) {
+ parse_err(SYNERR, "missing '%%{' in pipeline definition\n");
+ return;
+ }
+ next_char(); // Maintain the invariant
+ do {
+ ident = get_ident(); // Grab next identifier
+ if (ident == NULL) {
+ parse_err(SYNERR, "keyword identifier expected at %c\n", _curchar);
+ continue;
+ }
+ if (!strcmp(ident, "resources" )) resource_parse(*pipeline);
+ else if (!strcmp(ident, "pipe_desc" )) pipe_desc_parse(*pipeline);
+ else if (!strcmp(ident, "pipe_class")) pipe_class_parse(*pipeline);
+ else if (!strcmp(ident, "define")) {
+ skipws();
+ if ( (_curchar != '%')
+ || ( next_char(), (_curchar != '{')) ) {
+ parse_err(SYNERR, "expected '%%{'\n");
+ return;
+ }
+ next_char(); skipws();
+
+ char *node_class = get_ident();
+ if (node_class == NULL) {
+ parse_err(SYNERR, "expected identifier, found \"%c\"\n", _curchar);
+ return;
+ }
+
+ skipws();
+ if (_curchar != ',' && _curchar != '=') {
+ parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar);
+ break;
+ }
+ next_char(); skipws();
+
+ char *pipe_class = get_ident();
+ if (pipe_class == NULL) {
+ parse_err(SYNERR, "expected identifier, found \"%c\"\n", _curchar);
+ return;
+ }
+ if (_curchar != ';' ) {
+ parse_err(SYNERR, "expected `;`, found '%c'\n", _curchar);
+ break;
+ }
+ next_char(); // Skip over semi-colon
+
+ skipws();
+ if ( (_curchar != '%')
+ || ( next_char(), (_curchar != '}')) ) {
+ parse_err(SYNERR, "expected '%%}', found \"%c\"\n", _curchar);
+ }
+ next_char();
+
+ // Check ident for validity
+ if (_AD._pipeline && !_AD._pipeline->_classlist.search(pipe_class)) {
+ parse_err(SYNERR, "\"%s\" is not a valid pipeline class\n", pipe_class);
+ return;
+ }
+
+ // Add this machine node to the list in the pipeline class
+ _AD._pipeline->_classdict[pipe_class]->is_pipeclass()->_instructs.addName(node_class);
+
+ MachNodeForm *machnode = new MachNodeForm(node_class); // Create new machnode form
+ machnode->_machnode_pipe = pipe_class;
+
+ _AD.addForm(machnode);
+ }
+ else if (!strcmp(ident, "attributes")) {
+ bool vsi_seen = false;
+
+ skipws();
+ if ( (_curchar != '%')
+ || ( next_char(), (_curchar != '{')) ) {
+ parse_err(SYNERR, "expected '%%{'\n");
+ return;
+ }
+ next_char(); skipws();
+
+ while (_curchar != '%') {
+ ident = get_ident();
+ if (ident == NULL)
+ break;
+
+ if (!strcmp(ident, "variable_size_instructions")) {
+ skipws();
+ if (_curchar == ';') {
+ next_char(); skipws();
+ }
+
+ pipeline->_variableSizeInstrs = true;
+ vsi_seen = true;
+ continue;
+ }
+
+ if (!strcmp(ident, "fixed_size_instructions")) {
+ skipws();
+ if (_curchar == ';') {
+ next_char(); skipws();
+ }
+
+ pipeline->_variableSizeInstrs = false;
+ vsi_seen = true;
+ continue;
+ }
+
+ if (!strcmp(ident, "branch_has_delay_slot")) {
+ skipws();
+ if (_curchar == ';') {
+ next_char(); skipws();
+ }
+
+ pipeline->_branchHasDelaySlot = true;
+ continue;
+ }
+
+ if (!strcmp(ident, "max_instructions_per_bundle")) {
+ skipws();
+ if (_curchar != '=') {
+ parse_err(SYNERR, "expected `=`\n");
+ break;
+ }
+
+ next_char(); skipws();
+ pipeline->_maxInstrsPerBundle = get_int();
+ skipws();
+
+ if (_curchar == ';') {
+ next_char(); skipws();
+ }
+
+ continue;
+ }
+
+ if (!strcmp(ident, "max_bundles_per_cycle")) {
+ skipws();
+ if (_curchar != '=') {
+ parse_err(SYNERR, "expected `=`\n");
+ break;
+ }
+
+ next_char(); skipws();
+ pipeline->_maxBundlesPerCycle = get_int();
+ skipws();
+
+ if (_curchar == ';') {
+ next_char(); skipws();
+ }
+
+ continue;
+ }
+
+ if (!strcmp(ident, "instruction_unit_size")) {
+ skipws();
+ if (_curchar != '=') {
+ parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar);
+ break;
+ }
+
+ next_char(); skipws();
+ pipeline->_instrUnitSize = get_int();
+ skipws();
+
+ if (_curchar == ';') {
+ next_char(); skipws();
+ }
+
+ continue;
+ }
+
+ if (!strcmp(ident, "bundle_unit_size")) {
+ skipws();
+ if (_curchar != '=') {
+ parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar);
+ break;
+ }
+
+ next_char(); skipws();
+ pipeline->_bundleUnitSize = get_int();
+ skipws();
+
+ if (_curchar == ';') {
+ next_char(); skipws();
+ }
+
+ continue;
+ }
+
+ if (!strcmp(ident, "instruction_fetch_unit_size")) {
+ skipws();
+ if (_curchar != '=') {
+ parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar);
+ break;
+ }
+
+ next_char(); skipws();
+ pipeline->_instrFetchUnitSize = get_int();
+ skipws();
+
+ if (_curchar == ';') {
+ next_char(); skipws();
+ }
+
+ continue;
+ }
+
+ if (!strcmp(ident, "instruction_fetch_units")) {
+ skipws();
+ if (_curchar != '=') {
+ parse_err(SYNERR, "expected `=`, found '%c'\n", _curchar);
+ break;
+ }
+
+ next_char(); skipws();
+ pipeline->_instrFetchUnits = get_int();
+ skipws();
+
+ if (_curchar == ';') {
+ next_char(); skipws();
+ }
+
+ continue;
+ }
+
+ if (!strcmp(ident, "nops")) {
+ skipws();
+ if (_curchar != '(') {
+ parse_err(SYNERR, "expected `(`, found '%c'\n", _curchar);
+ break;
+ }
+
+ next_char(); skipws();
+
+ while (_curchar != ')') {
+ ident = get_ident();
+ if (ident == NULL) {
+ parse_err(SYNERR, "expected identifier for nop instruction, found '%c'\n", _curchar);
+ break;
+ }
+
+ pipeline->_noplist.addName(ident);
+ pipeline->_nopcnt++;
+ skipws();
+
+ if (_curchar == ',') {
+ next_char(); skipws();
+ }
+ }
+
+ next_char(); skipws();
+
+ if (_curchar == ';') {
+ next_char(); skipws();
+ }
+
+ continue;
+ }
+
+ parse_err(SYNERR, "unknown specifier \"%s\"\n", ident);
+ }
+
+ if ( (_curchar != '%')
+ || ( next_char(), (_curchar != '}')) ) {
+ parse_err(SYNERR, "expected '%%}', found \"%c\"\n", _curchar);
+ }
+ next_char(); skipws();
+
+ if (pipeline->_maxInstrsPerBundle == 0)
+ parse_err(SYNERR, "\"max_instructions_per_bundle\" unspecified\n");
+ if (pipeline->_instrUnitSize == 0 && pipeline->_bundleUnitSize == 0)
+ parse_err(SYNERR, "\"instruction_unit_size\" and \"bundle_unit_size\" unspecified\n");
+ if (pipeline->_instrFetchUnitSize == 0)
+ parse_err(SYNERR, "\"instruction_fetch_unit_size\" unspecified\n");
+ if (pipeline->_instrFetchUnits == 0)
+ parse_err(SYNERR, "\"instruction_fetch_units\" unspecified\n");
+ if (!vsi_seen)
+ parse_err(SYNERR, "\"variable_size_instruction\" or \"fixed_size_instruction\" unspecified\n");
+ }
+ else { // Done with staticly defined parts of instruction definition
+ parse_err(SYNERR, "expected one of \"resources\", \"pipe_desc\", \"pipe_class\", found \"%s\"\n", ident);
+ return;
+ }
+ skipws();
+ if (_curchar == ';')
+ skipws();
+ } while(_curchar != '%');
+
+ next_char();
+ if (_curchar != '}') {
+ parse_err(SYNERR, "missing \"%%}\" in pipeline definition\n");
+ return;
+ }
+
+ next_char();
+}
+
+//------------------------------resource_parse----------------------------
+void ADLParser::resource_parse(PipelineForm &pipeline) {
+ ResourceForm *resource;
+ char * ident;
+ char * expr;
+ unsigned mask;
+ pipeline._rescount = 0;
+
+ skipws(); // Skip leading whitespace
+
+ if (_curchar != '(') {
+ parse_err(SYNERR, "missing \"(\" in resource definition\n");
+ return;
+ }
+
+ do {
+ next_char(); // Skip "(" or ","
+ ident = get_ident(); // Grab next identifier
+
+ if (_AD._adl_debug > 1) {
+ if (ident != NULL) {
+ fprintf(stderr, "resource_parse: identifier: %s\n", ident);
+ }
+ }
+
+ if (ident == NULL) {
+ parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
+ return;
+ }
+ skipws();
+
+ if (_curchar != '=') {
+ mask = (1 << pipeline._rescount++);
+ }
+ else {
+ next_char(); skipws();
+ expr = get_ident(); // Grab next identifier
+ if (expr == NULL) {
+ parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
+ return;
+ }
+ resource = (ResourceForm *) pipeline._resdict[expr];
+ if (resource == NULL) {
+ parse_err(SYNERR, "resource \"%s\" is not defined\n", expr);
+ return;
+ }
+ mask = resource->mask();
+
+ skipws();
+ while (_curchar == '|') {
+ next_char(); skipws();
+
+ expr = get_ident(); // Grab next identifier
+ if (expr == NULL) {
+ parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
+ return;
+ }
+
+ resource = (ResourceForm *) pipeline._resdict[expr]; // Look up the value
+ if (resource == NULL) {
+ parse_err(SYNERR, "resource \"%s\" is not defined\n", expr);
+ return;
+ }
+
+ mask |= resource->mask();
+ skipws();
+ }
+ }
+
+ resource = new ResourceForm(mask);
+
+ pipeline._resdict.Insert(ident, resource);
+ pipeline._reslist.addName(ident);
+ } while (_curchar == ',');
+
+ if (_curchar != ')') {
+ parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
+ return;
+ }
+
+ next_char(); // Skip ")"
+ if (_curchar == ';')
+ next_char(); // Skip ";"
+}
+
+//------------------------------resource_parse----------------------------
+void ADLParser::pipe_desc_parse(PipelineForm &pipeline) {
+ char * ident;
+
+ skipws(); // Skip leading whitespace
+
+ if (_curchar != '(') {
+ parse_err(SYNERR, "missing \"(\" in pipe_desc definition\n");
+ return;
+ }
+
+ do {
+ next_char(); // Skip "(" or ","
+ ident = get_ident(); // Grab next identifier
+ if (ident == NULL) {
+ parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
+ return;
+ }
+
+ // Add the name to the list
+ pipeline._stages.addName(ident);
+ pipeline._stagecnt++;
+
+ skipws();
+ } while (_curchar == ',');
+
+ if (_curchar != ')') {
+ parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
+ return;
+ }
+
+ next_char(); // Skip ")"
+ if (_curchar == ';')
+ next_char(); // Skip ";"
+}
+
+//------------------------------pipe_class_parse--------------------------
+void ADLParser::pipe_class_parse(PipelineForm &pipeline) {
+ PipeClassForm *pipe_class;
+ char * ident;
+ char * stage;
+ char * read_or_write;
+ int is_write;
+ int is_read;
+ OperandForm *oper;
+
+ skipws(); // Skip leading whitespace
+
+ ident = get_ident(); // Grab next identifier
+
+ if (ident == NULL) {
+ parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
+ return;
+ }
+
+ // Create a record for the pipe_class
+ pipe_class = new PipeClassForm(ident, ++pipeline._classcnt);
+ pipeline._classdict.Insert(ident, pipe_class);
+ pipeline._classlist.addName(ident);
+
+ // Then get the operands
+ skipws();
+ if (_curchar != '(') {
+ parse_err(SYNERR, "missing \"(\" in pipe_class definition\n");
+ }
+ // Parse the operand list
+ else get_oplist(pipe_class->_parameters, pipe_class->_localNames);
+ skipws(); // Skip leading whitespace
+ // Check for block delimiter
+ if ( (_curchar != '%')
+ || ( next_char(), (_curchar != '{')) ) {
+ parse_err(SYNERR, "missing \"%%{\" in pipe_class definition\n");
+ return;
+ }
+ next_char();
+
+ do {
+ ident = get_ident(); // Grab next identifier
+ if (ident == NULL) {
+ parse_err(SYNERR, "keyword identifier expected at \"%c\"\n", _curchar);
+ continue;
+ }
+ skipws();
+
+ if (!strcmp(ident, "fixed_latency")) {
+ skipws();
+ if (_curchar != '(') {
+ parse_err(SYNERR, "missing \"(\" in latency definition\n");
+ return;
+ }
+ next_char(); skipws();
+ if( !isdigit(_curchar) ) {
+ parse_err(SYNERR, "number expected for \"%c\" in latency definition\n", _curchar);
+ return;
+ }
+ int fixed_latency = get_int();
+ skipws();
+ if (_curchar != ')') {
+ parse_err(SYNERR, "missing \")\" in latency definition\n");
+ return;
+ }
+ next_char(); skipws();
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing \";\" in latency definition\n");
+ return;
+ }
+
+ pipe_class->setFixedLatency(fixed_latency);
+ next_char(); skipws();
+ continue;
+ }
+
+ if (!strcmp(ident, "zero_instructions") ||
+ !strcmp(ident, "no_instructions")) {
+ skipws();
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing \";\" in latency definition\n");
+ return;
+ }
+
+ pipe_class->setInstructionCount(0);
+ next_char(); skipws();
+ continue;
+ }
+
+ if (!strcmp(ident, "one_instruction_with_delay_slot") ||
+ !strcmp(ident, "single_instruction_with_delay_slot")) {
+ skipws();
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing \";\" in latency definition\n");
+ return;
+ }
+
+ pipe_class->setInstructionCount(1);
+ pipe_class->setBranchDelay(true);
+ next_char(); skipws();
+ continue;
+ }
+
+ if (!strcmp(ident, "one_instruction") ||
+ !strcmp(ident, "single_instruction")) {
+ skipws();
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing \";\" in latency definition\n");
+ return;
+ }
+
+ pipe_class->setInstructionCount(1);
+ next_char(); skipws();
+ continue;
+ }
+
+ if (!strcmp(ident, "instructions_in_first_bundle") ||
+ !strcmp(ident, "instruction_count")) {
+ skipws();
+
+ int number_of_instructions = 1;
+
+ if (_curchar != '(') {
+ parse_err(SYNERR, "\"(\" expected at \"%c\"\n", _curchar);
+ continue;
+ }
+
+ next_char(); skipws();
+ number_of_instructions = get_int();
+
+ skipws();
+ if (_curchar != ')') {
+ parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
+ continue;
+ }
+
+ next_char(); skipws();
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing \";\" in latency definition\n");
+ return;
+ }
+
+ pipe_class->setInstructionCount(number_of_instructions);
+ next_char(); skipws();
+ continue;
+ }
+
+ if (!strcmp(ident, "multiple_bundles")) {
+ skipws();
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing \";\" after multiple bundles\n");
+ return;
+ }
+
+ pipe_class->setMultipleBundles(true);
+ next_char(); skipws();
+ continue;
+ }
+
+ if (!strcmp(ident, "has_delay_slot")) {
+ skipws();
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing \";\" after \"has_delay_slot\"\n");
+ return;
+ }
+
+ pipe_class->setBranchDelay(true);
+ next_char(); skipws();
+ continue;
+ }
+
+ if (!strcmp(ident, "force_serialization")) {
+ skipws();
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing \";\" after \"force_serialization\"\n");
+ return;
+ }
+
+ pipe_class->setForceSerialization(true);
+ next_char(); skipws();
+ continue;
+ }
+
+ if (!strcmp(ident, "may_have_no_code")) {
+ skipws();
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing \";\" after \"may_have_no_code\"\n");
+ return;
+ }
+
+ pipe_class->setMayHaveNoCode(true);
+ next_char(); skipws();
+ continue;
+ }
+
+ const Form *parm = pipe_class->_localNames[ident];
+ if (parm != NULL) {
+ oper = parm->is_operand();
+ if (oper == NULL && !parm->is_opclass()) {
+ parse_err(SYNERR, "operand name expected at %s\n", ident);
+ continue;
+ }
+
+ if (_curchar != ':') {
+ parse_err(SYNERR, "\":\" expected at \"%c\"\n", _curchar);
+ continue;
+ }
+ next_char(); skipws();
+ stage = get_ident();
+ if (stage == NULL) {
+ parse_err(SYNERR, "pipeline stage identifier expected at \"%c\"\n", _curchar);
+ continue;
+ }
+
+ skipws();
+ if (_curchar != '(') {
+ parse_err(SYNERR, "\"(\" expected at \"%c\"\n", _curchar);
+ continue;
+ }
+
+ next_char();
+ read_or_write = get_ident();
+ if (read_or_write == NULL) {
+ parse_err(SYNERR, "\"read\" or \"write\" expected at \"%c\"\n", _curchar);
+ continue;
+ }
+
+ is_read = strcmp(read_or_write, "read") == 0;
+ is_write = strcmp(read_or_write, "write") == 0;
+ if (!is_read && !is_write) {
+ parse_err(SYNERR, "\"read\" or \"write\" expected at \"%c\"\n", _curchar);
+ continue;
+ }
+
+ skipws();
+ if (_curchar != ')') {
+ parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
+ continue;
+ }
+
+ next_char(); skipws();
+ int more_instrs = 0;
+ if (_curchar == '+') {
+ next_char(); skipws();
+ if (_curchar < '0' || _curchar > '9') {
+ parse_err(SYNERR, "<number> expected at \"%c\"\n", _curchar);
+ continue;
+ }
+ while (_curchar >= '0' && _curchar <= '9') {
+ more_instrs *= 10;
+ more_instrs += _curchar - '0';
+ next_char();
+ }
+ skipws();
+ }
+
+ PipeClassOperandForm *pipe_operand = new PipeClassOperandForm(stage, is_write, more_instrs);
+ pipe_class->_localUsage.Insert(ident, pipe_operand);
+
+ if (_curchar == '%')
+ continue;
+
+ if (_curchar != ';') {
+ parse_err(SYNERR, "\";\" expected at \"%c\"\n", _curchar);
+ continue;
+ }
+ next_char(); skipws();
+ continue;
+ }
+
+ // Scan for Resource Specifier
+ const Form *res = pipeline._resdict[ident];
+ if (res != NULL) {
+ int cyclecnt = 1;
+ if (_curchar != ':') {
+ parse_err(SYNERR, "\":\" expected at \"%c\"\n", _curchar);
+ continue;
+ }
+ next_char(); skipws();
+ stage = get_ident();
+ if (stage == NULL) {
+ parse_err(SYNERR, "pipeline stage identifier expected at \"%c\"\n", _curchar);
+ continue;
+ }
+
+ skipws();
+ if (_curchar == '(') {
+ next_char();
+ cyclecnt = get_int();
+
+ skipws();
+ if (_curchar != ')') {
+ parse_err(SYNERR, "\")\" expected at \"%c\"\n", _curchar);
+ continue;
+ }
+
+ next_char(); skipws();
+ }
+
+ PipeClassResourceForm *resource = new PipeClassResourceForm(ident, stage, cyclecnt);
+ int stagenum = pipeline._stages.index(stage);
+ if (pipeline._maxcycleused < (stagenum+cyclecnt))
+ pipeline._maxcycleused = (stagenum+cyclecnt);
+ pipe_class->_resUsage.addForm(resource);
+
+ if (_curchar == '%')
+ continue;
+
+ if (_curchar != ';') {
+ parse_err(SYNERR, "\";\" expected at \"%c\"\n", _curchar);
+ continue;
+ }
+ next_char(); skipws();
+ continue;
+ }
+
+ parse_err(SYNERR, "resource expected at \"%s\"\n", ident);
+ return;
+ } while(_curchar != '%');
+
+ next_char();
+ if (_curchar != '}') {
+ parse_err(SYNERR, "missing \"%%}\" in pipe_class definition\n");
+ return;
+ }
+
+ next_char();
+}
+
+//------------------------------peep_parse-------------------------------------
+void ADLParser::peep_parse(void) {
+ Peephole *peep; // Pointer to current peephole rule form
+ char *desc = NULL; // String representation of rule
+
+ skipws(); // Skip leading whitespace
+
+ peep = new Peephole(); // Build new Peephole object
+ // Check for open block sequence
+ skipws(); // Skip leading whitespace
+ if (_curchar == '%' && *(_ptr+1) == '{') {
+ next_char(); next_char(); // Skip "%{"
+ skipws();
+ while (_curchar != '%' && *(_ptr+1) != '}') {
+ char *token = get_ident();
+ if (token == NULL) {
+ parse_err(SYNERR, "missing identifier inside peephole rule.\n");
+ return;
+ }
+ // check for legal subsections of peephole rule
+ if (strcmp(token,"peepmatch")==0) {
+ peep_match_parse(*peep); }
+ else if (strcmp(token,"peepconstraint")==0) {
+ peep_constraint_parse(*peep); }
+ else if (strcmp(token,"peepreplace")==0) {
+ peep_replace_parse(*peep); }
+ else {
+ parse_err(SYNERR, "expected peepmatch, peepconstraint, or peepreplace for identifier %s.\n", token);
+ }
+ skipws();
+ }
+ }
+ else {
+ parse_err(SYNERR, "Missing %%{ ... %%} block after peephole keyword.\n");
+ return;
+ }
+ next_char(); // Skip past '%'
+ next_char(); // Skip past '}'
+}
+
+// ******************** Private Level 2 Parse Functions ********************
+//------------------------------constraint_parse------------------------------
+Constraint *ADLParser::constraint_parse(void) {
+ char *func;
+ char *arg;
+
+ // Check for constraint expression
+ skipws();
+ if (_curchar != '(') {
+ parse_err(SYNERR, "missing constraint expression, (...)\n");
+ return NULL;
+ }
+ next_char(); // Skip past '('
+
+ // Get constraint function
+ skipws();
+ func = get_ident();
+ if (func == NULL) {
+ parse_err(SYNERR, "missing function in constraint expression.\n");
+ return NULL;
+ }
+ if (strcmp(func,"ALLOC_IN_RC")==0
+ || strcmp(func,"IS_R_CLASS")==0) {
+ // Check for '(' before argument
+ skipws();
+ if (_curchar != '(') {
+ parse_err(SYNERR, "missing '(' for constraint function's argument.\n");
+ return NULL;
+ }
+ next_char();
+
+ // Get it's argument
+ skipws();
+ arg = get_ident();
+ if (arg == NULL) {
+ parse_err(SYNERR, "missing argument for constraint function %s\n",func);
+ return NULL;
+ }
+ // Check for ')' after argument
+ skipws();
+ if (_curchar != ')') {
+ parse_err(SYNERR, "missing ')' after constraint function argument %s\n",arg);
+ return NULL;
+ }
+ next_char();
+ } else {
+ parse_err(SYNERR, "Invalid constraint function %s\n",func);
+ return NULL;
+ }
+
+ // Check for closing paren and ';'
+ skipws();
+ if (_curchar != ')') {
+ parse_err(SYNERR, "Missing ')' for constraint function %s\n",func);
+ return NULL;
+ }
+ next_char();
+ skipws();
+ if (_curchar != ';') {
+ parse_err(SYNERR, "Missing ';' after constraint.\n");
+ return NULL;
+ }
+ next_char();
+
+ // Create new "Constraint"
+ Constraint *constraint = new Constraint(func,arg);
+ return constraint;
+}
+
+//------------------------------constr_parse-----------------------------------
+ConstructRule *ADLParser::construct_parse(void) {
+ return NULL;
+}
+
+
+//------------------------------reg_def_parse----------------------------------
+void ADLParser::reg_def_parse(void) {
+ char *rname; // Name of register being defined
+
+ // Get register name
+ skipws(); // Skip whitespace
+ rname = get_ident();
+ if (rname == NULL) {
+ parse_err(SYNERR, "missing register name after reg_def\n");
+ return;
+ }
+
+ // Check for definition of register calling convention (save on call, ...),
+ // register save type, and register encoding value.
+ skipws();
+ char *callconv = NULL;
+ char *c_conv = NULL;
+ char *idealtype = NULL;
+ char *encoding = NULL;
+ char *concrete = NULL;
+ if (_curchar == '(') {
+ next_char();
+ callconv = get_ident();
+ // Parse the internal calling convention, must be NS, SOC, SOE, or AS.
+ if (callconv == NULL) {
+ parse_err(SYNERR, "missing register calling convention value\n");
+ return;
+ }
+ if(strcmp(callconv, "SOC") && strcmp(callconv,"SOE") &&
+ strcmp(callconv, "NS") && strcmp(callconv, "AS")) {
+ parse_err(SYNERR, "invalid value for register calling convention\n");
+ }
+ skipws();
+ if (_curchar != ',') {
+ parse_err(SYNERR, "missing comma in register definition statement\n");
+ return;
+ }
+ next_char();
+
+ // Parse the native calling convention, must be NS, SOC, SOE, AS
+ c_conv = get_ident();
+ if (c_conv == NULL) {
+ parse_err(SYNERR, "missing register native calling convention value\n");
+ return;
+ }
+ if(strcmp(c_conv, "SOC") && strcmp(c_conv,"SOE") &&
+ strcmp(c_conv, "NS") && strcmp(c_conv, "AS")) {
+ parse_err(SYNERR, "invalid value for register calling convention\n");
+ }
+ skipws();
+ if (_curchar != ',') {
+ parse_err(SYNERR, "missing comma in register definition statement\n");
+ return;
+ }
+ next_char();
+ skipws();
+
+ // Parse the ideal save type
+ idealtype = get_ident();
+ if (idealtype == NULL) {
+ parse_err(SYNERR, "missing register save type value\n");
+ return;
+ }
+ skipws();
+ if (_curchar != ',') {
+ parse_err(SYNERR, "missing comma in register definition statement\n");
+ return;
+ }
+ next_char();
+ skipws();
+
+ // Parse the encoding value
+ encoding = get_expr("encoding", ",");
+ if (encoding == NULL) {
+ parse_err(SYNERR, "missing register encoding value\n");
+ return;
+ }
+ trim(encoding);
+ if (_curchar != ',') {
+ parse_err(SYNERR, "missing comma in register definition statement\n");
+ return;
+ }
+ next_char();
+ skipws();
+ // Parse the concrete name type
+ // concrete = get_ident();
+ concrete = get_expr("concrete", ")");
+ if (concrete == NULL) {
+ parse_err(SYNERR, "missing vm register name value\n");
+ return;
+ }
+
+ if (_curchar != ')') {
+ parse_err(SYNERR, "missing ')' in register definition statement\n");
+ return;
+ }
+ next_char();
+ }
+
+ // Check for closing ';'
+ skipws();
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing ';' after reg_def\n");
+ return;
+ }
+ next_char(); // move past ';'
+
+ // Debug Stuff
+ if (_AD._adl_debug > 1) {
+ fprintf(stderr,"Register Definition: %s ( %s, %s %s )\n", rname,
+ (callconv ? callconv : ""), (c_conv ? c_conv : ""), concrete);
+ }
+
+ // Record new register definition.
+ _AD._register->addRegDef(rname, callconv, c_conv, idealtype, encoding, concrete);
+ return;
+}
+
+//------------------------------reg_class_parse--------------------------------
+void ADLParser::reg_class_parse(void) {
+ char *cname; // Name of register class being defined
+
+ // Get register class name
+ skipws(); // Skip leading whitespace
+ cname = get_ident();
+ if (cname == NULL) {
+ parse_err(SYNERR, "missing register class name after 'reg_class'\n");
+ return;
+ }
+ // Debug Stuff
+ if (_AD._adl_debug >1) fprintf(stderr,"Register Class: %s\n", cname);
+
+ skipws();
+ if (_curchar == '(') {
+ // A register list is defined for the register class.
+ // Collect registers into a generic RegClass register class.
+ RegClass* reg_class = _AD._register->addRegClass<RegClass>(cname);
+
+ next_char(); // Skip '('
+ skipws();
+ while (_curchar != ')') {
+ char *rname = get_ident();
+ if (rname==NULL) {
+ parse_err(SYNERR, "missing identifier inside reg_class list.\n");
+ return;
+ }
+ RegDef *regDef = _AD._register->getRegDef(rname);
+ if (!regDef) {
+ parse_err(SEMERR, "unknown identifier %s inside reg_class list.\n", rname);
+ } else {
+ reg_class->addReg(regDef); // add regDef to regClass
+ }
+
+ // Check for ',' and position to next token.
+ skipws();
+ if (_curchar == ',') {
+ next_char(); // Skip trailing ','
+ skipws();
+ }
+ }
+ next_char(); // Skip closing ')'
+ } else if (_curchar == '%') {
+ // A code snippet is defined for the register class.
+ // Collect the code snippet into a CodeSnippetRegClass register class.
+ CodeSnippetRegClass* reg_class = _AD._register->addRegClass<CodeSnippetRegClass>(cname);
+ char *code = find_cpp_block("reg class");
+ if (code == NULL) {
+ parse_err(SYNERR, "missing code declaration for reg class.\n");
+ return;
+ }
+ reg_class->set_code_snippet(code);
+ return;
+ }
+
+ // Check for terminating ';'
+ skipws();
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing ';' at end of reg_class definition.\n");
+ return;
+ }
+ next_char(); // Skip trailing ';'
+
+ // Check RegClass size, must be <= 32 registers in class.
+
+ return;
+}
+
+//------------------------------reg_class_dynamic_parse------------------------
+void ADLParser::reg_class_dynamic_parse(void) {
+ char *cname; // Name of dynamic register class being defined
+
+ // Get register class name
+ skipws();
+ cname = get_ident();
+ if (cname == NULL) {
+ parse_err(SYNERR, "missing dynamic register class name after 'reg_class_dynamic'\n");
+ return;
+ }
+
+ if (_AD._adl_debug > 1) {
+ fprintf(stdout, "Dynamic Register Class: %s\n", cname);
+ }
+
+ skipws();
+ if (_curchar != '(') {
+ parse_err(SYNERR, "missing '(' at the beginning of reg_class_dynamic definition\n");
+ return;
+ }
+ next_char();
+ skipws();
+
+ // Collect two register classes and the C++ code representing the condition code used to
+ // select between the two classes into a ConditionalRegClass register class.
+ ConditionalRegClass* reg_class = _AD._register->addRegClass<ConditionalRegClass>(cname);
+ int i;
+ for (i = 0; i < 2; i++) {
+ char* name = get_ident();
+ if (name == NULL) {
+ parse_err(SYNERR, "missing class identifier inside reg_class_dynamic list.\n");
+ return;
+ }
+ RegClass* rc = _AD._register->getRegClass(name);
+ if (rc == NULL) {
+ parse_err(SEMERR, "unknown identifier %s inside reg_class_dynamic list.\n", name);
+ } else {
+ reg_class->set_rclass_at_index(i, rc);
+ }
+
+ skipws();
+ if (_curchar == ',') {
+ next_char();
+ skipws();
+ } else {
+ parse_err(SYNERR, "missing separator ',' inside reg_class_dynamic list.\n");
+ }
+ }
+
+ // Collect the condition code.
+ skipws();
+ if (_curchar == '%') {
+ char* code = find_cpp_block("reg class dynamic");
+ if (code == NULL) {
+ parse_err(SYNERR, "missing code declaration for reg_class_dynamic.\n");
+ return;
+ }
+ reg_class->set_condition_code(code);
+ } else {
+ parse_err(SYNERR, "missing %% at the beginning of code block in reg_class_dynamic definition\n");
+ return;
+ }
+
+ skipws();
+ if (_curchar != ')') {
+ parse_err(SYNERR, "missing ')' at the end of reg_class_dynamic definition\n");
+ return;
+ }
+ next_char();
+
+ skipws();
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing ';' at the end of reg_class_dynamic definition.\n");
+ return;
+ }
+ next_char(); // Skip trailing ';'
+
+ return;
+}
+
+//------------------------------alloc_class_parse------------------------------
+void ADLParser::alloc_class_parse(void) {
+ char *name; // Name of allocation class being defined
+
+ // Get allocation class name
+ skipws(); // Skip leading whitespace
+ name = get_ident();
+ if (name == NULL) {
+ parse_err(SYNERR, "missing allocation class name after 'reg_class'\n");
+ return;
+ }
+ // Debug Stuff
+ if (_AD._adl_debug >1) fprintf(stderr,"Allocation Class: %s\n", name);
+
+ AllocClass *alloc_class = _AD._register->addAllocClass(name);
+
+ // Collect registers in class
+ skipws();
+ if (_curchar == '(') {
+ next_char(); // Skip '('
+ skipws();
+ while (_curchar != ')') {
+ char *rname = get_ident();
+ if (rname==NULL) {
+ parse_err(SYNERR, "missing identifier inside reg_class list.\n");
+ return;
+ }
+ // Check if name is a RegDef
+ RegDef *regDef = _AD._register->getRegDef(rname);
+ if (regDef) {
+ alloc_class->addReg(regDef); // add regDef to allocClass
+ } else {
+
+ // name must be a RegDef or a RegClass
+ parse_err(SYNERR, "name %s should be a previously defined reg_def.\n", rname);
+ return;
+ }
+
+ // Check for ',' and position to next token.
+ skipws();
+ if (_curchar == ',') {
+ next_char(); // Skip trailing ','
+ skipws();
+ }
+ }
+ next_char(); // Skip closing ')'
+ }
+
+ // Check for terminating ';'
+ skipws();
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing ';' at end of reg_class definition.\n");
+ return;
+ }
+ next_char(); // Skip trailing ';'
+
+ return;
+}
+
+//------------------------------peep_match_child_parse-------------------------
+InstructForm *ADLParser::peep_match_child_parse(PeepMatch &match, int parent, int &position, int input){
+ char *token = NULL;
+ int lparen = 0; // keep track of parenthesis nesting depth
+ int rparen = 0; // position of instruction at this depth
+ InstructForm *inst_seen = NULL;
+
+ // Walk the match tree,
+ // Record <parent, position, instruction name, input position>
+ while ( lparen >= rparen ) {
+ skipws();
+ // Left paren signals start of an input, collect with recursive call
+ if (_curchar == '(') {
+ ++lparen;
+ next_char();
+ ( void ) peep_match_child_parse(match, parent, position, rparen);
+ }
+ // Right paren signals end of an input, may be more
+ else if (_curchar == ')') {
+ ++rparen;
+ if( rparen == lparen ) { // IF rparen matches an lparen I've seen
+ next_char(); // move past ')'
+ } else { // ELSE leave ')' for parent
+ assert( rparen == lparen + 1, "Should only see one extra ')'");
+ // if an instruction was not specified for this paren-pair
+ if( ! inst_seen ) { // record signal entry
+ match.add_instruction( parent, position, NameList::_signal, input );
+ ++position;
+ }
+ // ++input; // TEMPORARY
+ return inst_seen;
+ }
+ }
+ // if no parens, then check for instruction name
+ // This instruction is the parent of a sub-tree
+ else if ((token = get_ident_dup()) != NULL) {
+ const Form *form = _AD._globalNames[token];
+ if (form) {
+ InstructForm *inst = form->is_instruction();
+ // Record the first instruction at this level
+ if( inst_seen == NULL ) {
+ inst_seen = inst;
+ }
+ if (inst) {
+ match.add_instruction( parent, position, token, input );
+ parent = position;
+ ++position;
+ } else {
+ parse_err(SYNERR, "instruction name expected at identifier %s.\n",
+ token);
+ return inst_seen;
+ }
+ }
+ else {
+ parse_err(SYNERR, "missing identifier in peepmatch rule.\n");
+ return NULL;
+ }
+ }
+ else {
+ parse_err(SYNERR, "missing identifier in peepmatch rule.\n");
+ return NULL;
+ }
+
+ } // end while
+
+ assert( false, "ShouldNotReachHere();");
+ return NULL;
+}
+
+//------------------------------peep_match_parse-------------------------------
+// Syntax for a peepmatch rule
+//
+// peepmatch ( root_instr_name [(instruction subtree)] [,(instruction subtree)]* );
+//
+void ADLParser::peep_match_parse(Peephole &peep) {
+
+ skipws();
+ // Check the structure of the rule
+ // Check for open paren
+ if (_curchar != '(') {
+ parse_err(SYNERR, "missing '(' at start of peepmatch rule.\n");
+ return;
+ }
+ next_char(); // skip '('
+
+ // Construct PeepMatch and parse the peepmatch rule.
+ PeepMatch *match = new PeepMatch(_ptr);
+ int parent = -1; // parent of root
+ int position = 0; // zero-based positions
+ int input = 0; // input position in parent's operands
+ InstructForm *root= peep_match_child_parse( *match, parent, position, input);
+ if( root == NULL ) {
+ parse_err(SYNERR, "missing instruction-name at start of peepmatch.\n");
+ return;
+ }
+
+ if( _curchar != ')' ) {
+ parse_err(SYNERR, "missing ')' at end of peepmatch.\n");
+ return;
+ }
+ next_char(); // skip ')'
+
+ // Check for closing semicolon
+ skipws();
+ if( _curchar != ';' ) {
+ parse_err(SYNERR, "missing ';' at end of peepmatch.\n");
+ return;
+ }
+ next_char(); // skip ';'
+
+ // Store match into peep, and store peep into instruction
+ peep.add_match(match);
+ root->append_peephole(&peep);
+}
+
+//------------------------------peep_constraint_parse--------------------------
+// Syntax for a peepconstraint rule
+// A parenthesized list of relations between operands in peepmatch subtree
+//
+// peepconstraint %{
+// (instruction_number.operand_name
+// relational_op
+// instruction_number.operand_name OR register_name
+// [, ...] );
+//
+// // instruction numbers are zero-based using topological order in peepmatch
+//
+void ADLParser::peep_constraint_parse(Peephole &peep) {
+
+ skipws();
+ // Check the structure of the rule
+ // Check for open paren
+ if (_curchar != '(') {
+ parse_err(SYNERR, "missing '(' at start of peepconstraint rule.\n");
+ return;
+ }
+ else {
+ next_char(); // Skip '('
+ }
+
+ // Check for a constraint
+ skipws();
+ while( _curchar != ')' ) {
+ // Get information on the left instruction and its operand
+ // left-instructions's number
+ int left_inst = get_int();
+ // Left-instruction's operand
+ skipws();
+ if( _curchar != '.' ) {
+ parse_err(SYNERR, "missing '.' in peepconstraint after instruction number.\n");
+ return;
+ }
+ next_char(); // Skip '.'
+ char *left_op = get_ident_dup();
+
+ skipws();
+ // Collect relational operator
+ char *relation = get_relation_dup();
+
+ skipws();
+ // Get information on the right instruction and its operand
+ int right_inst; // Right-instructions's number
+ if( isdigit(_curchar) ) {
+ right_inst = get_int();
+ // Right-instruction's operand
+ skipws();
+ if( _curchar != '.' ) {
+ parse_err(SYNERR, "missing '.' in peepconstraint after instruction number.\n");
+ return;
+ }
+ next_char(); // Skip '.'
+ } else {
+ right_inst = -1; // Flag as being a register constraint
+ }
+
+ char *right_op = get_ident_dup();
+
+ // Construct the next PeepConstraint
+ PeepConstraint *constraint = new PeepConstraint( left_inst, left_op,
+ relation,
+ right_inst, right_op );
+ // And append it to the list for this peephole rule
+ peep.append_constraint( constraint );
+
+ // Check for another constraint, or end of rule
+ skipws();
+ if( _curchar == ',' ) {
+ next_char(); // Skip ','
+ skipws();
+ }
+ else if( _curchar != ')' ) {
+ parse_err(SYNERR, "expected ',' or ')' after peephole constraint.\n");
+ return;
+ }
+ } // end while( processing constraints )
+ next_char(); // Skip ')'
+
+ // Check for terminating ';'
+ skipws();
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing ';' at end of peepconstraint.\n");
+ return;
+ }
+ next_char(); // Skip trailing ';'
+}
+
+
+//------------------------------peep_replace_parse-----------------------------
+// Syntax for a peepreplace rule
+// root instruction name followed by a
+// parenthesized list of whitespace separated instruction.operand specifiers
+//
+// peepreplace ( instr_name ( [instruction_number.operand_name]* ) );
+//
+//
+void ADLParser::peep_replace_parse(Peephole &peep) {
+ int lparen = 0; // keep track of parenthesis nesting depth
+ int rparen = 0; // keep track of parenthesis nesting depth
+ int icount = 0; // count of instructions in rule for naming
+ char *str = NULL;
+ char *token = NULL;
+
+ skipws();
+ // Check for open paren
+ if (_curchar != '(') {
+ parse_err(SYNERR, "missing '(' at start of peepreplace rule.\n");
+ return;
+ }
+ else {
+ lparen++;
+ next_char();
+ }
+
+ // Check for root instruction
+ char *inst = get_ident_dup();
+ const Form *form = _AD._globalNames[inst];
+ if( form == NULL || form->is_instruction() == NULL ) {
+ parse_err(SYNERR, "Instruction name expected at start of peepreplace.\n");
+ return;
+ }
+
+ // Store string representation of rule into replace
+ PeepReplace *replace = new PeepReplace(str);
+ replace->add_instruction( inst );
+
+ skipws();
+ // Start of root's operand-list
+ if (_curchar != '(') {
+ parse_err(SYNERR, "missing '(' at peepreplace root's operand-list.\n");
+ return;
+ }
+ else {
+ lparen++;
+ next_char();
+ }
+
+ skipws();
+ // Get the list of operands
+ while( _curchar != ')' ) {
+ // Get information on an instruction and its operand
+ // instructions's number
+ int inst_num = get_int();
+ // Left-instruction's operand
+ skipws();
+ if( _curchar != '.' ) {
+ parse_err(SYNERR, "missing '.' in peepreplace after instruction number.\n");
+ return;
+ }
+ next_char(); // Skip '.'
+ char *inst_op = get_ident_dup();
+ if( inst_op == NULL ) {
+ parse_err(SYNERR, "missing operand identifier in peepreplace.\n");
+ return;
+ }
+
+ // Record this operand's position in peepmatch
+ replace->add_operand( inst_num, inst_op );
+ skipws();
+ }
+
+ // Check for the end of operands list
+ skipws();
+ assert( _curchar == ')', "While loop should have advanced to ')'.");
+ next_char(); // Skip ')'
+
+ skipws();
+ // Check for end of peepreplace
+ if( _curchar != ')' ) {
+ parse_err(SYNERR, "missing ')' at end of peepmatch.\n");
+ parse_err(SYNERR, "Support one replacement instruction.\n");
+ return;
+ }
+ next_char(); // Skip ')'
+
+ // Check for closing semicolon
+ skipws();
+ if( _curchar != ';' ) {
+ parse_err(SYNERR, "missing ';' at end of peepreplace.\n");
+ return;
+ }
+ next_char(); // skip ';'
+
+ // Store replace into peep
+ peep.add_replace( replace );
+}
+
+//------------------------------pred_parse-------------------------------------
+Predicate *ADLParser::pred_parse(void) {
+ Predicate *predicate; // Predicate class for operand
+ char *rule = NULL; // String representation of predicate
+
+ skipws(); // Skip leading whitespace
+ int line = linenum();
+ if ( (rule = get_paren_expr("pred expression", true)) == NULL ) {
+ parse_err(SYNERR, "incorrect or missing expression for 'predicate'\n");
+ return NULL;
+ }
+ // Debug Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr,"Predicate: %s\n", rule);
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing ';' in predicate definition\n");
+ return NULL;
+ }
+ next_char(); // Point after the terminator
+
+ predicate = new Predicate(rule); // Build new predicate object
+ skipws();
+ return predicate;
+}
+
+
+//------------------------------ins_encode_parse_block-------------------------
+// Parse the block form of ins_encode. See ins_encode_parse for more details
+void ADLParser::ins_encode_parse_block(InstructForm& inst) {
+ // Create a new encoding name based on the name of the instruction
+ // definition, which should be unique.
+ const char* prefix = "__ins_encode_";
+ char* ec_name = (char*) malloc(strlen(inst._ident) + strlen(prefix) + 1);
+ sprintf(ec_name, "%s%s", prefix, inst._ident);
+
+ assert(_AD._encode->encClass(ec_name) == NULL, "shouldn't already exist");
+ EncClass* encoding = _AD._encode->add_EncClass(ec_name);
+ encoding->_linenum = linenum();
+
+ // synthesize the arguments list for the enc_class from the
+ // arguments to the instruct definition.
+ const char* param = NULL;
+ inst._parameters.reset();
+ while ((param = inst._parameters.iter()) != NULL) {
+ OperandForm* opForm = (OperandForm*) inst._localNames[param];
+ encoding->add_parameter(opForm->_ident, param);
+ }
+
+ if (!inst._is_postalloc_expand) {
+ // Define a MacroAssembler instance for use by the encoding. The
+ // name is chosen to match the __ idiom used for assembly in other
+ // parts of hotspot and assumes the existence of the standard
+ // #define __ _masm.
+ encoding->add_code(" MacroAssembler _masm(&cbuf);\n");
+ }
+
+ // Parse the following %{ }% block
+ ins_encode_parse_block_impl(inst, encoding, ec_name);
+
+ // Build an encoding rule which invokes the encoding rule we just
+ // created, passing all arguments that we received.
+ InsEncode* encrule = new InsEncode(); // Encode class for instruction
+ NameAndList* params = encrule->add_encode(ec_name);
+ inst._parameters.reset();
+ while ((param = inst._parameters.iter()) != NULL) {
+ params->add_entry(param);
+ }
+
+ // Check for duplicate ins_encode sections after parsing the block
+ // so that parsing can continue and find any other errors.
+ if (inst._insencode != NULL) {
+ parse_err(SYNERR, "Multiple ins_encode sections defined\n");
+ return;
+ }
+
+ // Set encode class of this instruction.
+ inst._insencode = encrule;
+}
+
+
+void ADLParser::ins_encode_parse_block_impl(InstructForm& inst, EncClass* encoding, char* ec_name) {
+ skipws_no_preproc(); // Skip leading whitespace
+ // Prepend location descriptor, for debugging; cf. ADLParser::find_cpp_block
+ if (_AD._adlocation_debug) {
+ encoding->add_code(get_line_string());
+ }
+
+ // Collect the parts of the encode description
+ // (1) strings that are passed through to output
+ // (2) replacement/substitution variable, preceeded by a '$'
+ while ((_curchar != '%') && (*(_ptr+1) != '}')) {
+
+ // (1)
+ // Check if there is a string to pass through to output
+ char *start = _ptr; // Record start of the next string
+ while ((_curchar != '$') && ((_curchar != '%') || (*(_ptr+1) != '}')) ) {
+ // If at the start of a comment, skip past it
+ if( (_curchar == '/') && ((*(_ptr+1) == '/') || (*(_ptr+1) == '*')) ) {
+ skipws_no_preproc();
+ } else {
+ // ELSE advance to the next character, or start of the next line
+ next_char_or_line();
+ }
+ }
+ // If a string was found, terminate it and record in EncClass
+ if (start != _ptr) {
+ *_ptr = '\0'; // Terminate the string
+ encoding->add_code(start);
+ }
+
+ // (2)
+ // If we are at a replacement variable,
+ // copy it and record in EncClass
+ if (_curchar == '$') {
+ // Found replacement Variable
+ char* rep_var = get_rep_var_ident_dup();
+
+ // Add flag to _strings list indicating we should check _rep_vars
+ encoding->add_rep_var(rep_var);
+
+ skipws();
+
+ // Check if this instruct is a MachConstantNode.
+ if (strcmp(rep_var, "constanttablebase") == 0) {
+ // This instruct is a MachConstantNode.
+ inst.set_needs_constant_base(true);
+ if (strncmp("MachCall", inst.mach_base_class(_globalNames), strlen("MachCall")) != 0 ) {
+ inst.set_is_mach_constant(true);
+ }
+
+ if (_curchar == '(') {
+ parse_err(SYNERR, "constanttablebase in instruct %s cannot have an argument "
+ "(only constantaddress and constantoffset)", ec_name);
+ return;
+ }
+ }
+ else if ((strcmp(rep_var, "constantaddress") == 0) ||
+ (strcmp(rep_var, "constantoffset") == 0)) {
+ // This instruct is a MachConstantNode.
+ inst.set_is_mach_constant(true);
+
+ // If the constant keyword has an argument, parse it.
+ if (_curchar == '(') constant_parse(inst);
+ }
+ }
+ } // end while part of format description
+ next_char(); // Skip '%'
+ next_char(); // Skip '}'
+
+ skipws();
+
+ if (_AD._adlocation_debug) {
+ encoding->add_code(end_line_marker());
+ }
+
+ // Debug Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr, "EncodingClass Form: %s\n", ec_name);
+}
+
+
+//------------------------------ins_encode_parse-------------------------------
+// Encode rules have the form
+// ins_encode( encode_class_name(parameter_list), ... );
+//
+// The "encode_class_name" must be defined in the encode section
+// The parameter list contains $names that are locals.
+//
+// Alternatively it can be written like this:
+//
+// ins_encode %{
+// ... // body
+// %}
+//
+// which synthesizes a new encoding class taking the same arguments as
+// the InstructForm, and automatically prefixes the definition with:
+//
+// MacroAssembler masm(&cbuf);\n");
+//
+// making it more compact to take advantage of the MacroAssembler and
+// placing the assembly closer to it's use by instructions.
+void ADLParser::ins_encode_parse(InstructForm& inst) {
+
+ // Parse encode class name
+ skipws(); // Skip whitespace
+ if (_curchar != '(') {
+ // Check for ins_encode %{ form
+ if ((_curchar == '%') && (*(_ptr+1) == '{')) {
+ next_char(); // Skip '%'
+ next_char(); // Skip '{'
+
+ // Parse the block form of ins_encode
+ ins_encode_parse_block(inst);
+ return;
+ }
+
+ parse_err(SYNERR, "missing '%%{' or '(' in ins_encode definition\n");
+ return;
+ }
+ next_char(); // move past '('
+ skipws();
+
+ InsEncode *encrule = new InsEncode(); // Encode class for instruction
+ encrule->_linenum = linenum();
+ char *ec_name = NULL; // String representation of encode rule
+ // identifier is optional.
+ while (_curchar != ')') {
+ ec_name = get_ident();
+ if (ec_name == NULL) {
+ parse_err(SYNERR, "Invalid encode class name after 'ins_encode('.\n");
+ return;
+ }
+ // Check that encoding is defined in the encode section
+ EncClass *encode_class = _AD._encode->encClass(ec_name);
+ if (encode_class == NULL) {
+ // Like to defer checking these till later...
+ // parse_err(WARN, "Using an undefined encode class '%s' in 'ins_encode'.\n", ec_name);
+ }
+
+ // Get list for encode method's parameters
+ NameAndList *params = encrule->add_encode(ec_name);
+
+ // Parse the parameters to this encode method.
+ skipws();
+ if ( _curchar == '(' ) {
+ next_char(); // move past '(' for parameters
+
+ // Parse the encode method's parameters
+ while (_curchar != ')') {
+ char *param = get_ident_or_literal_constant("encoding operand");
+ if ( param != NULL ) {
+
+ // Check if this instruct is a MachConstantNode.
+ if (strcmp(param, "constanttablebase") == 0) {
+ // This instruct is a MachConstantNode.
+ inst.set_needs_constant_base(true);
+ if (strncmp("MachCall", inst.mach_base_class(_globalNames), strlen("MachCall")) != 0 ) {
+ inst.set_is_mach_constant(true);
+ }
+
+ if (_curchar == '(') {
+ parse_err(SYNERR, "constanttablebase in instruct %s cannot have an argument "
+ "(only constantaddress and constantoffset)", ec_name);
+ return;
+ }
+ } else {
+ // Found a parameter:
+ // Check it is a local name, add it to the list, then check for more
+ // New: allow hex constants as parameters to an encode method.
+ // New: allow parenthesized expressions as parameters.
+ // New: allow "primary", "secondary", "tertiary" as parameters.
+ // New: allow user-defined register name as parameter
+ if ( (inst._localNames[param] == NULL) &&
+ !ADLParser::is_literal_constant(param) &&
+ (Opcode::as_opcode_type(param) == Opcode::NOT_AN_OPCODE) &&
+ ((_AD._register == NULL ) || (_AD._register->getRegDef(param) == NULL)) ) {
+ parse_err(SYNERR, "Using non-locally defined parameter %s for encoding %s.\n", param, ec_name);
+ return;
+ }
+ }
+ params->add_entry(param);
+
+ skipws();
+ if (_curchar == ',' ) {
+ // More parameters to come
+ next_char(); // move past ',' between parameters
+ skipws(); // Skip to next parameter
+ }
+ else if (_curchar == ')') {
+ // Done with parameter list
+ }
+ else {
+ // Only ',' or ')' are valid after a parameter name
+ parse_err(SYNERR, "expected ',' or ')' after parameter %s.\n",
+ ec_name);
+ return;
+ }
+
+ } else {
+ skipws();
+ // Did not find a parameter
+ if (_curchar == ',') {
+ parse_err(SYNERR, "Expected encode parameter before ',' in encoding %s.\n", ec_name);
+ return;
+ }
+ if (_curchar != ')') {
+ parse_err(SYNERR, "Expected ')' after encode parameters.\n");
+ return;
+ }
+ }
+ } // WHILE loop collecting parameters
+ next_char(); // move past ')' at end of parameters
+ } // done with parameter list for encoding
+
+ // Check for ',' or ')' after encoding
+ skipws(); // move to character after parameters
+ if ( _curchar == ',' ) {
+ // Found a ','
+ next_char(); // move past ',' between encode methods
+ skipws();
+ }
+ else if ( _curchar != ')' ) {
+ // If not a ',' then only a ')' is allowed
+ parse_err(SYNERR, "Expected ')' after encoding %s.\n", ec_name);
+ return;
+ }
+
+ // Check for ',' separating parameters
+ // if ( _curchar != ',' && _curchar != ')' ) {
+ // parse_err(SYNERR, "expected ',' or ')' after encode method inside ins_encode.\n");
+ // return NULL;
+ // }
+
+ } // done parsing ins_encode methods and their parameters
+ if (_curchar != ')') {
+ parse_err(SYNERR, "Missing ')' at end of ins_encode description.\n");
+ return;
+ }
+ next_char(); // move past ')'
+ skipws(); // Skip leading whitespace
+
+ if ( _curchar != ';' ) {
+ parse_err(SYNERR, "Missing ';' at end of ins_encode.\n");
+ return;
+ }
+ next_char(); // move past ';'
+ skipws(); // be friendly to oper_parse()
+
+ // Check for duplicate ins_encode sections after parsing the block
+ // so that parsing can continue and find any other errors.
+ if (inst._insencode != NULL) {
+ parse_err(SYNERR, "Multiple ins_encode sections defined\n");
+ return;
+ }
+
+ // Debug Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr,"Instruction Encode: %s\n", ec_name);
+
+ // Set encode class of this instruction.
+ inst._insencode = encrule;
+}
+
+//------------------------------postalloc_expand_parse---------------------------
+// Encode rules have the form
+// postalloc_expand( encode_class_name(parameter_list) );
+//
+// The "encode_class_name" must be defined in the encode section.
+// The parameter list contains $names that are locals.
+//
+// This is just a copy of ins_encode_parse without the loop.
+void ADLParser::postalloc_expand_parse(InstructForm& inst) {
+ inst._is_postalloc_expand = true;
+
+ // Parse encode class name.
+ skipws(); // Skip whitespace.
+ if (_curchar != '(') {
+ // Check for postalloc_expand %{ form
+ if ((_curchar == '%') && (*(_ptr+1) == '{')) {
+ next_char(); // Skip '%'
+ next_char(); // Skip '{'
+
+ // Parse the block form of postalloc_expand
+ ins_encode_parse_block(inst);
+ return;
+ }
+
+ parse_err(SYNERR, "missing '(' in postalloc_expand definition\n");
+ return;
+ }
+ next_char(); // Move past '('.
+ skipws();
+
+ InsEncode *encrule = new InsEncode(); // Encode class for instruction.
+ encrule->_linenum = linenum();
+ char *ec_name = NULL; // String representation of encode rule.
+ // identifier is optional.
+ if (_curchar != ')') {
+ ec_name = get_ident();
+ if (ec_name == NULL) {
+ parse_err(SYNERR, "Invalid postalloc_expand class name after 'postalloc_expand('.\n");
+ return;
+ }
+ // Check that encoding is defined in the encode section.
+ EncClass *encode_class = _AD._encode->encClass(ec_name);
+
+ // Get list for encode method's parameters
+ NameAndList *params = encrule->add_encode(ec_name);
+
+ // Parse the parameters to this encode method.
+ skipws();
+ if (_curchar == '(') {
+ next_char(); // Move past '(' for parameters.
+
+ // Parse the encode method's parameters.
+ while (_curchar != ')') {
+ char *param = get_ident_or_literal_constant("encoding operand");
+ if (param != NULL) {
+ // Found a parameter:
+
+ // First check for constant table support.
+
+ // Check if this instruct is a MachConstantNode.
+ if (strcmp(param, "constanttablebase") == 0) {
+ // This instruct is a MachConstantNode.
+ inst.set_needs_constant_base(true);
+ if (strncmp("MachCall", inst.mach_base_class(_globalNames), strlen("MachCall")) != 0 ) {
+ inst.set_is_mach_constant(true);
+ }
+
+ if (_curchar == '(') {
+ parse_err(SYNERR, "constanttablebase in instruct %s cannot have an argument "
+ "(only constantaddress and constantoffset)", ec_name);
+ return;
+ }
+ }
+ else if ((strcmp(param, "constantaddress") == 0) ||
+ (strcmp(param, "constantoffset") == 0)) {
+ // This instruct is a MachConstantNode.
+ inst.set_is_mach_constant(true);
+
+ // If the constant keyword has an argument, parse it.
+ if (_curchar == '(') constant_parse(inst);
+ }
+
+ // Else check it is a local name, add it to the list, then check for more.
+ // New: allow hex constants as parameters to an encode method.
+ // New: allow parenthesized expressions as parameters.
+ // New: allow "primary", "secondary", "tertiary" as parameters.
+ // New: allow user-defined register name as parameter.
+ else if ((inst._localNames[param] == NULL) &&
+ !ADLParser::is_literal_constant(param) &&
+ (Opcode::as_opcode_type(param) == Opcode::NOT_AN_OPCODE) &&
+ ((_AD._register == NULL) || (_AD._register->getRegDef(param) == NULL))) {
+ parse_err(SYNERR, "Using non-locally defined parameter %s for encoding %s.\n", param, ec_name);
+ return;
+ }
+ params->add_entry(param);
+
+ skipws();
+ if (_curchar == ',') {
+ // More parameters to come.
+ next_char(); // Move past ',' between parameters.
+ skipws(); // Skip to next parameter.
+ } else if (_curchar == ')') {
+ // Done with parameter list
+ } else {
+ // Only ',' or ')' are valid after a parameter name.
+ parse_err(SYNERR, "expected ',' or ')' after parameter %s.\n", ec_name);
+ return;
+ }
+
+ } else {
+ skipws();
+ // Did not find a parameter.
+ if (_curchar == ',') {
+ parse_err(SYNERR, "Expected encode parameter before ',' in postalloc_expand %s.\n", ec_name);
+ return;
+ }
+ if (_curchar != ')') {
+ parse_err(SYNERR, "Expected ')' after postalloc_expand parameters.\n");
+ return;
+ }
+ }
+ } // WHILE loop collecting parameters.
+ next_char(); // Move past ')' at end of parameters.
+ } // Done with parameter list for encoding.
+
+ // Check for ',' or ')' after encoding.
+ skipws(); // Move to character after parameters.
+ if (_curchar != ')') {
+ // Only a ')' is allowed.
+ parse_err(SYNERR, "Expected ')' after postalloc_expand %s.\n", ec_name);
+ return;
+ }
+ } // Done parsing postalloc_expand method and their parameters.
+ if (_curchar != ')') {
+ parse_err(SYNERR, "Missing ')' at end of postalloc_expand description.\n");
+ return;
+ }
+ next_char(); // Move past ')'.
+ skipws(); // Skip leading whitespace.
+
+ if (_curchar != ';') {
+ parse_err(SYNERR, "Missing ';' at end of postalloc_expand.\n");
+ return;
+ }
+ next_char(); // Move past ';'.
+ skipws(); // Be friendly to oper_parse().
+
+ // Debug Stuff.
+ if (_AD._adl_debug > 1) fprintf(stderr, "Instruction postalloc_expand: %s\n", ec_name);
+
+ // Set encode class of this instruction.
+ inst._insencode = encrule;
+}
+
+
+//------------------------------constant_parse---------------------------------
+// Parse a constant expression.
+void ADLParser::constant_parse(InstructForm& inst) {
+ // Create a new encoding name based on the name of the instruction
+ // definition, which should be unique.
+ const char* prefix = "__constant_";
+ char* ec_name = (char*) malloc(strlen(inst._ident) + strlen(prefix) + 1);
+ sprintf(ec_name, "%s%s", prefix, inst._ident);
+
+ assert(_AD._encode->encClass(ec_name) == NULL, "shouldn't already exist");
+ EncClass* encoding = _AD._encode->add_EncClass(ec_name);
+ encoding->_linenum = linenum();
+
+ // synthesize the arguments list for the enc_class from the
+ // arguments to the instruct definition.
+ const char* param = NULL;
+ inst._parameters.reset();
+ while ((param = inst._parameters.iter()) != NULL) {
+ OperandForm* opForm = (OperandForm*) inst._localNames[param];
+ encoding->add_parameter(opForm->_ident, param);
+ }
+
+ // Parse the following ( ) expression.
+ constant_parse_expression(encoding, ec_name);
+
+ // Build an encoding rule which invokes the encoding rule we just
+ // created, passing all arguments that we received.
+ InsEncode* encrule = new InsEncode(); // Encode class for instruction
+ NameAndList* params = encrule->add_encode(ec_name);
+ inst._parameters.reset();
+ while ((param = inst._parameters.iter()) != NULL) {
+ params->add_entry(param);
+ }
+
+ // Set encode class of this instruction.
+ inst._constant = encrule;
+}
+
+
+//------------------------------constant_parse_expression----------------------
+void ADLParser::constant_parse_expression(EncClass* encoding, char* ec_name) {
+ skipws();
+
+ // Prepend location descriptor, for debugging; cf. ADLParser::find_cpp_block
+ if (_AD._adlocation_debug) {
+ encoding->add_code(get_line_string());
+ }
+
+ // Start code line.
+ encoding->add_code(" _constant = C->constant_table().add");
+
+ // Parse everything in ( ) expression.
+ encoding->add_code("(this, ");
+ next_char(); // Skip '('
+ int parens_depth = 1;
+
+ // Collect the parts of the constant expression.
+ // (1) strings that are passed through to output
+ // (2) replacement/substitution variable, preceeded by a '$'
+ while (parens_depth > 0) {
+ if (_curchar == '(') {
+ parens_depth++;
+ encoding->add_code("(");
+ next_char();
+ }
+ else if (_curchar == ')') {
+ parens_depth--;
+ if (parens_depth > 0)
+ encoding->add_code(")");
+ next_char();
+ }
+ else {
+ // (1)
+ // Check if there is a string to pass through to output
+ char *start = _ptr; // Record start of the next string
+ while ((_curchar != '$') && (_curchar != '(') && (_curchar != ')')) {
+ next_char();
+ }
+ // If a string was found, terminate it and record in EncClass
+ if (start != _ptr) {
+ *_ptr = '\0'; // Terminate the string
+ encoding->add_code(start);
+ }
+
+ // (2)
+ // If we are at a replacement variable, copy it and record in EncClass.
+ if (_curchar == '$') {
+ // Found replacement Variable
+ char* rep_var = get_rep_var_ident_dup();
+ encoding->add_rep_var(rep_var);
+ }
+ }
+ }
+
+ // Finish code line.
+ encoding->add_code(");");
+
+ if (_AD._adlocation_debug) {
+ encoding->add_code(end_line_marker());
+ }
+
+ // Debug Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr, "EncodingClass Form: %s\n", ec_name);
+}
+
+
+//------------------------------size_parse-----------------------------------
+// Parse a 'size(<expr>)' attribute which specifies the size of the
+// emitted instructions in bytes. <expr> can be a C++ expression,
+// e.g. a constant.
+char* ADLParser::size_parse(InstructForm *instr) {
+ char* sizeOfInstr = NULL;
+
+ // Get value of the instruction's size
+ skipws();
+
+ // Parse size
+ sizeOfInstr = get_paren_expr("size expression");
+ if (sizeOfInstr == NULL) {
+ parse_err(SYNERR, "size of opcode expected at %c\n", _curchar);
+ return NULL;
+ }
+
+ skipws();
+
+ // Check for terminator
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing ';' in ins_attrib definition\n");
+ return NULL;
+ }
+ next_char(); // Advance past the ';'
+ skipws(); // necessary for instr_parse()
+
+ // Debug Stuff
+ if (_AD._adl_debug > 1) {
+ if (sizeOfInstr != NULL) {
+ fprintf(stderr,"size of opcode: %s\n", sizeOfInstr);
+ }
+ }
+
+ return sizeOfInstr;
+}
+
+
+//------------------------------opcode_parse-----------------------------------
+Opcode * ADLParser::opcode_parse(InstructForm *instr) {
+ char *primary = NULL;
+ char *secondary = NULL;
+ char *tertiary = NULL;
+
+ char *val = NULL;
+ Opcode *opcode = NULL;
+
+ // Get value of the instruction's opcode
+ skipws();
+ if (_curchar != '(') { // Check for parenthesized operand list
+ parse_err(SYNERR, "missing '(' in expand instruction declaration\n");
+ return NULL;
+ }
+ next_char(); // skip open paren
+ skipws();
+ if (_curchar != ')') {
+ // Parse primary, secondary, and tertiary opcodes, if provided.
+ if ( (primary = get_ident_or_literal_constant("primary opcode")) == NULL ) {
+ parse_err(SYNERR, "primary hex opcode expected at %c\n", _curchar);
+ return NULL;
+ }
+ skipws();
+ if (_curchar == ',') {
+ next_char();
+ skipws();
+ // Parse secondary opcode
+ if ( (secondary = get_ident_or_literal_constant("secondary opcode")) == NULL ) {
+ parse_err(SYNERR, "secondary hex opcode expected at %c\n", _curchar);
+ return NULL;
+ }
+ skipws();
+ if (_curchar == ',') {
+ next_char();
+ skipws();
+ // Parse tertiary opcode
+ if ( (tertiary = get_ident_or_literal_constant("tertiary opcode")) == NULL ) {
+ parse_err(SYNERR,"tertiary hex opcode expected at %c\n", _curchar);
+ return NULL;
+ }
+ skipws();
+ }
+ }
+ skipws();
+ if (_curchar != ')') {
+ parse_err(SYNERR, "Missing ')' in opcode description\n");
+ return NULL;
+ }
+ }
+ next_char(); // Skip ')'
+ skipws();
+ // Check for terminator
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing ';' in ins_attrib definition\n");
+ return NULL;
+ }
+ next_char(); // Advance past the ';'
+ skipws(); // necessary for instr_parse()
+
+ // Debug Stuff
+ if (_AD._adl_debug > 1) {
+ if (primary != NULL) fprintf(stderr,"primary opcode: %s\n", primary);
+ if (secondary != NULL) fprintf(stderr,"secondary opcode: %s\n", secondary);
+ if (tertiary != NULL) fprintf(stderr,"tertiary opcode: %s\n", tertiary);
+ }
+
+ // Generate new object and return
+ opcode = new Opcode(primary, secondary, tertiary);
+ return opcode;
+}
+
+
+//------------------------------interface_parse--------------------------------
+Interface *ADLParser::interface_parse(void) {
+ char *iface_name = NULL; // Name of interface class being used
+ char *iface_code = NULL; // Describe components of this class
+
+ // Get interface class name
+ skipws(); // Skip whitespace
+ if (_curchar != '(') {
+ parse_err(SYNERR, "Missing '(' at start of interface description.\n");
+ return NULL;
+ }
+ next_char(); // move past '('
+ skipws();
+ iface_name = get_ident();
+ if (iface_name == NULL) {
+ parse_err(SYNERR, "missing interface name after 'interface'.\n");
+ return NULL;
+ }
+ skipws();
+ if (_curchar != ')') {
+ parse_err(SYNERR, "Missing ')' after name of interface.\n");
+ return NULL;
+ }
+ next_char(); // move past ')'
+
+ // Get details of the interface,
+ // for the type of interface indicated by iface_name.
+ Interface *inter = NULL;
+ skipws();
+ if ( _curchar != ';' ) {
+ if ( strcmp(iface_name,"MEMORY_INTER") == 0 ) {
+ inter = mem_interface_parse();
+ }
+ else if ( strcmp(iface_name,"COND_INTER") == 0 ) {
+ inter = cond_interface_parse();
+ }
+ // The parse routines consume the "%}"
+
+ // Check for probable extra ';' after defining block.
+ if ( _curchar == ';' ) {
+ parse_err(SYNERR, "Extra ';' after defining interface block.\n");
+ next_char(); // Skip ';'
+ return NULL;
+ }
+ } else {
+ next_char(); // move past ';'
+
+ // Create appropriate interface object
+ if ( strcmp(iface_name,"REG_INTER") == 0 ) {
+ inter = new RegInterface();
+ }
+ else if ( strcmp(iface_name,"CONST_INTER") == 0 ) {
+ inter = new ConstInterface();
+ }
+ }
+ skipws(); // be friendly to oper_parse()
+ // Debug Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr,"Interface Form: %s\n", iface_name);
+
+ // Create appropriate interface object and return.
+ return inter;
+}
+
+
+//------------------------------mem_interface_parse----------------------------
+Interface *ADLParser::mem_interface_parse(void) {
+ // Fields for MemInterface
+ char *base = NULL;
+ char *index = NULL;
+ char *scale = NULL;
+ char *disp = NULL;
+
+ if (_curchar != '%') {
+ parse_err(SYNERR, "Missing '%%{' for 'interface' block.\n");
+ return NULL;
+ }
+ next_char(); // Skip '%'
+ if (_curchar != '{') {
+ parse_err(SYNERR, "Missing '%%{' for 'interface' block.\n");
+ return NULL;
+ }
+ next_char(); // Skip '{'
+ skipws();
+ do {
+ char *field = get_ident();
+ if (field == NULL) {
+ parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%%}' ending interface.\n");
+ return NULL;
+ }
+ if ( strcmp(field,"base") == 0 ) {
+ base = interface_field_parse();
+ }
+ else if ( strcmp(field,"index") == 0 ) {
+ index = interface_field_parse();
+ }
+ else if ( strcmp(field,"scale") == 0 ) {
+ scale = interface_field_parse();
+ }
+ else if ( strcmp(field,"disp") == 0 ) {
+ disp = interface_field_parse();
+ }
+ else {
+ parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%%}' ending interface.\n");
+ return NULL;
+ }
+ } while( _curchar != '%' );
+ next_char(); // Skip '%'
+ if ( _curchar != '}' ) {
+ parse_err(SYNERR, "Missing '%%}' for 'interface' block.\n");
+ return NULL;
+ }
+ next_char(); // Skip '}'
+
+ // Construct desired object and return
+ Interface *inter = new MemInterface(base, index, scale, disp);
+ return inter;
+}
+
+
+//------------------------------cond_interface_parse---------------------------
+Interface *ADLParser::cond_interface_parse(void) {
+ char *equal;
+ char *not_equal;
+ char *less;
+ char *greater_equal;
+ char *less_equal;
+ char *greater;
+ char *overflow;
+ char *no_overflow;
+ const char *equal_format = "eq";
+ const char *not_equal_format = "ne";
+ const char *less_format = "lt";
+ const char *greater_equal_format = "ge";
+ const char *less_equal_format = "le";
+ const char *greater_format = "gt";
+ const char *overflow_format = "o";
+ const char *no_overflow_format = "no";
+
+ if (_curchar != '%') {
+ parse_err(SYNERR, "Missing '%%{' for 'cond_interface' block.\n");
+ return NULL;
+ }
+ next_char(); // Skip '%'
+ if (_curchar != '{') {
+ parse_err(SYNERR, "Missing '%%{' for 'cond_interface' block.\n");
+ return NULL;
+ }
+ next_char(); // Skip '{'
+ skipws();
+ do {
+ char *field = get_ident();
+ if (field == NULL) {
+ parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%%}' ending interface.\n");
+ return NULL;
+ }
+ if ( strcmp(field,"equal") == 0 ) {
+ equal = interface_field_parse(&equal_format);
+ }
+ else if ( strcmp(field,"not_equal") == 0 ) {
+ not_equal = interface_field_parse(¬_equal_format);
+ }
+ else if ( strcmp(field,"less") == 0 ) {
+ less = interface_field_parse(&less_format);
+ }
+ else if ( strcmp(field,"greater_equal") == 0 ) {
+ greater_equal = interface_field_parse(&greater_equal_format);
+ }
+ else if ( strcmp(field,"less_equal") == 0 ) {
+ less_equal = interface_field_parse(&less_equal_format);
+ }
+ else if ( strcmp(field,"greater") == 0 ) {
+ greater = interface_field_parse(&greater_format);
+ }
+ else if ( strcmp(field,"overflow") == 0 ) {
+ overflow = interface_field_parse(&overflow_format);
+ }
+ else if ( strcmp(field,"no_overflow") == 0 ) {
+ no_overflow = interface_field_parse(&no_overflow_format);
+ }
+ else {
+ parse_err(SYNERR, "Expected keyword, base|index|scale|disp, or '%%}' ending interface.\n");
+ return NULL;
+ }
+ } while( _curchar != '%' );
+ next_char(); // Skip '%'
+ if ( _curchar != '}' ) {
+ parse_err(SYNERR, "Missing '%%}' for 'interface' block.\n");
+ return NULL;
+ }
+ next_char(); // Skip '}'
+
+ // Construct desired object and return
+ Interface *inter = new CondInterface(equal, equal_format,
+ not_equal, not_equal_format,
+ less, less_format,
+ greater_equal, greater_equal_format,
+ less_equal, less_equal_format,
+ greater, greater_format,
+ overflow, overflow_format,
+ no_overflow, no_overflow_format);
+ return inter;
+}
+
+
+//------------------------------interface_field_parse--------------------------
+char *ADLParser::interface_field_parse(const char ** format) {
+ char *iface_field = NULL;
+
+ // Get interface field
+ skipws(); // Skip whitespace
+ if (_curchar != '(') {
+ parse_err(SYNERR, "Missing '(' at start of interface field.\n");
+ return NULL;
+ }
+ next_char(); // move past '('
+ skipws();
+ if ( _curchar != '0' && _curchar != '$' ) {
+ parse_err(SYNERR, "missing or invalid interface field contents.\n");
+ return NULL;
+ }
+ iface_field = get_rep_var_ident();
+ if (iface_field == NULL) {
+ parse_err(SYNERR, "missing or invalid interface field contents.\n");
+ return NULL;
+ }
+ skipws();
+ if (format != NULL && _curchar == ',') {
+ next_char();
+ skipws();
+ if (_curchar != '"') {
+ parse_err(SYNERR, "Missing '\"' in field format .\n");
+ return NULL;
+ }
+ next_char();
+ char *start = _ptr; // Record start of the next string
+ while ((_curchar != '"') && (_curchar != '%') && (_curchar != '\n')) {
+ if (_curchar == '\\') next_char(); // superquote
+ if (_curchar == '\n') parse_err(SYNERR, "newline in string"); // unimplemented!
+ next_char();
+ }
+ if (_curchar != '"') {
+ parse_err(SYNERR, "Missing '\"' at end of field format .\n");
+ return NULL;
+ }
+ // If a string was found, terminate it and record in FormatRule
+ if ( start != _ptr ) {
+ *_ptr = '\0'; // Terminate the string
+ *format = start;
+ }
+ next_char();
+ skipws();
+ }
+ if (_curchar != ')') {
+ parse_err(SYNERR, "Missing ')' after interface field.\n");
+ return NULL;
+ }
+ next_char(); // move past ')'
+ skipws();
+ if ( _curchar != ';' ) {
+ parse_err(SYNERR, "Missing ';' at end of interface field.\n");
+ return NULL;
+ }
+ next_char(); // move past ';'
+ skipws(); // be friendly to interface_parse()
+
+ return iface_field;
+}
+
+
+//------------------------------match_parse------------------------------------
+MatchRule *ADLParser::match_parse(FormDict &operands) {
+ MatchRule *match; // Match Rule class for instruction/operand
+ char *cnstr = NULL; // Code for constructor
+ int depth = 0; // Counter for matching parentheses
+ int numleaves = 0; // Counter for number of leaves in rule
+
+ // Parse the match rule tree
+ MatchNode *mnode = matchNode_parse(operands, depth, numleaves, true);
+
+ // Either there is a block with a constructor, or a ';' here
+ skipws(); // Skip whitespace
+ if ( _curchar == ';' ) { // Semicolon is valid terminator
+ cnstr = NULL; // no constructor for this form
+ next_char(); // Move past the ';', replaced with '\0'
+ }
+ else if ((cnstr = find_cpp_block("match constructor")) == NULL ) {
+ parse_err(SYNERR, "invalid construction of match rule\n"
+ "Missing ';' or invalid '%%{' and '%%}' constructor\n");
+ return NULL; // No MatchRule to return
+ }
+ if (_AD._adl_debug > 1)
+ if (cnstr) fprintf(stderr,"Match Constructor: %s\n", cnstr);
+ // Build new MatchRule object
+ match = new MatchRule(_AD, mnode, depth, cnstr, numleaves);
+ skipws(); // Skip any trailing whitespace
+ return match; // Return MatchRule object
+}
+
+//------------------------------format_parse-----------------------------------
+FormatRule* ADLParser::format_parse(void) {
+ char *desc = NULL;
+ FormatRule *format = (new FormatRule(desc));
+
+ // Without expression form, MUST have a code block;
+ skipws(); // Skip whitespace
+ if ( _curchar == ';' ) { // Semicolon is valid terminator
+ desc = NULL; // no constructor for this form
+ next_char(); // Move past the ';', replaced with '\0'
+ }
+ else if ( _curchar == '%' && *(_ptr+1) == '{') {
+ next_char(); // Move past the '%'
+ next_char(); // Move past the '{'
+
+ skipws();
+ if (_curchar == '$') {
+ char* ident = get_rep_var_ident();
+ if (strcmp(ident, "$$template") == 0) return template_parse();
+ parse_err(SYNERR, "Unknown \"%s\" directive in format", ident);
+ return NULL;
+ }
+ // Check for the opening '"' inside the format description
+ if ( _curchar == '"' ) {
+ next_char(); // Move past the initial '"'
+ if( _curchar == '"' ) { // Handle empty format string case
+ *_ptr = '\0'; // Terminate empty string
+ format->_strings.addName(_ptr);
+ }
+
+ // Collect the parts of the format description
+ // (1) strings that are passed through to tty->print
+ // (2) replacement/substitution variable, preceeded by a '$'
+ // (3) multi-token ANSIY C style strings
+ while ( true ) {
+ if ( _curchar == '%' || _curchar == '\n' ) {
+ if ( _curchar != '"' ) {
+ parse_err(SYNERR, "missing '\"' at end of format block");
+ return NULL;
+ }
+ }
+
+ // (1)
+ // Check if there is a string to pass through to output
+ char *start = _ptr; // Record start of the next string
+ while ((_curchar != '$') && (_curchar != '"') && (_curchar != '%') && (_curchar != '\n')) {
+ if (_curchar == '\\') {
+ next_char(); // superquote
+ if ((_curchar == '$') || (_curchar == '%'))
+ // hack to avoid % escapes and warnings about undefined \ escapes
+ *(_ptr-1) = _curchar;
+ }
+ if (_curchar == '\n') parse_err(SYNERR, "newline in string"); // unimplemented!
+ next_char();
+ }
+ // If a string was found, terminate it and record in FormatRule
+ if ( start != _ptr ) {
+ *_ptr = '\0'; // Terminate the string
+ format->_strings.addName(start);
+ }
+
+ // (2)
+ // If we are at a replacement variable,
+ // copy it and record in FormatRule
+ if ( _curchar == '$' ) {
+ next_char(); // Move past the '$'
+ char* rep_var = get_ident(); // Nil terminate the variable name
+ rep_var = strdup(rep_var);// Copy the string
+ *_ptr = _curchar; // and replace Nil with original character
+ format->_rep_vars.addName(rep_var);
+ // Add flag to _strings list indicating we should check _rep_vars
+ format->_strings.addName(NameList::_signal);
+ }
+
+ // (3)
+ // Allow very long strings to be broken up,
+ // using the ANSI C syntax "foo\n" <newline> "bar"
+ if ( _curchar == '"') {
+ next_char(); // Move past the '"'
+ skipws(); // Skip white space before next string token
+ if ( _curchar != '"') {
+ break;
+ } else {
+ // Found one. Skip both " and the whitespace in between.
+ next_char();
+ }
+ }
+ } // end while part of format description
+
+ // Check for closing '"' and '%}' in format description
+ skipws(); // Move to closing '%}'
+ if ( _curchar != '%' ) {
+ parse_err(SYNERR, "non-blank characters between closing '\"' and '%%' in format");
+ return NULL;
+ }
+ } // Done with format description inside
+
+ skipws();
+ // Past format description, at '%'
+ if ( _curchar != '%' || *(_ptr+1) != '}' ) {
+ parse_err(SYNERR, "missing '%%}' at end of format block");
+ return NULL;
+ }
+ next_char(); // Move past the '%'
+ next_char(); // Move past the '}'
+ }
+ else { // parameter list alone must terminate with a ';'
+ parse_err(SYNERR, "missing ';' after Format expression");
+ return NULL;
+ }
+ // Debug Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr,"Format Rule: %s\n", desc);
+
+ skipws();
+ return format;
+}
+
+
+//------------------------------template_parse-----------------------------------
+FormatRule* ADLParser::template_parse(void) {
+ char *desc = NULL;
+ FormatRule *format = (new FormatRule(desc));
+
+ skipws();
+ while ( (_curchar != '%') && (*(_ptr+1) != '}') ) {
+
+ // (1)
+ // Check if there is a string to pass through to output
+ {
+ char *start = _ptr; // Record start of the next string
+ while ((_curchar != '$') && ((_curchar != '%') || (*(_ptr+1) != '}')) ) {
+ // If at the start of a comment, skip past it
+ if( (_curchar == '/') && ((*(_ptr+1) == '/') || (*(_ptr+1) == '*')) ) {
+ skipws_no_preproc();
+ } else {
+ // ELSE advance to the next character, or start of the next line
+ next_char_or_line();
+ }
+ }
+ // If a string was found, terminate it and record in EncClass
+ if ( start != _ptr ) {
+ *_ptr = '\0'; // Terminate the string
+ // Add flag to _strings list indicating we should check _rep_vars
+ format->_strings.addName(NameList::_signal2);
+ format->_strings.addName(start);
+ }
+ }
+
+ // (2)
+ // If we are at a replacement variable,
+ // copy it and record in EncClass
+ if ( _curchar == '$' ) {
+ // Found replacement Variable
+ char *rep_var = get_rep_var_ident_dup();
+ if (strcmp(rep_var, "$emit") == 0) {
+ // switch to normal format parsing
+ next_char();
+ next_char();
+ skipws();
+ // Check for the opening '"' inside the format description
+ if ( _curchar == '"' ) {
+ next_char(); // Move past the initial '"'
+ if( _curchar == '"' ) { // Handle empty format string case
+ *_ptr = '\0'; // Terminate empty string
+ format->_strings.addName(_ptr);
+ }
+
+ // Collect the parts of the format description
+ // (1) strings that are passed through to tty->print
+ // (2) replacement/substitution variable, preceeded by a '$'
+ // (3) multi-token ANSIY C style strings
+ while ( true ) {
+ if ( _curchar == '%' || _curchar == '\n' ) {
+ parse_err(SYNERR, "missing '\"' at end of format block");
+ return NULL;
+ }
+
+ // (1)
+ // Check if there is a string to pass through to output
+ char *start = _ptr; // Record start of the next string
+ while ((_curchar != '$') && (_curchar != '"') && (_curchar != '%') && (_curchar != '\n')) {
+ if (_curchar == '\\') next_char(); // superquote
+ if (_curchar == '\n') parse_err(SYNERR, "newline in string"); // unimplemented!
+ next_char();
+ }
+ // If a string was found, terminate it and record in FormatRule
+ if ( start != _ptr ) {
+ *_ptr = '\0'; // Terminate the string
+ format->_strings.addName(start);
+ }
+
+ // (2)
+ // If we are at a replacement variable,
+ // copy it and record in FormatRule
+ if ( _curchar == '$' ) {
+ next_char(); // Move past the '$'
+ char* next_rep_var = get_ident(); // Nil terminate the variable name
+ next_rep_var = strdup(next_rep_var);// Copy the string
+ *_ptr = _curchar; // and replace Nil with original character
+ format->_rep_vars.addName(next_rep_var);
+ // Add flag to _strings list indicating we should check _rep_vars
+ format->_strings.addName(NameList::_signal);
+ }
+
+ // (3)
+ // Allow very long strings to be broken up,
+ // using the ANSI C syntax "foo\n" <newline> "bar"
+ if ( _curchar == '"') {
+ next_char(); // Move past the '"'
+ skipws(); // Skip white space before next string token
+ if ( _curchar != '"') {
+ break;
+ } else {
+ // Found one. Skip both " and the whitespace in between.
+ next_char();
+ }
+ }
+ } // end while part of format description
+ }
+ } else {
+ // Add flag to _strings list indicating we should check _rep_vars
+ format->_rep_vars.addName(rep_var);
+ // Add flag to _strings list indicating we should check _rep_vars
+ format->_strings.addName(NameList::_signal3);
+ }
+ } // end while part of format description
+ }
+
+ skipws();
+ // Past format description, at '%'
+ if ( _curchar != '%' || *(_ptr+1) != '}' ) {
+ parse_err(SYNERR, "missing '%%}' at end of format block");
+ return NULL;
+ }
+ next_char(); // Move past the '%'
+ next_char(); // Move past the '}'
+
+ // Debug Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr,"Format Rule: %s\n", desc);
+
+ skipws();
+ return format;
+}
+
+
+//------------------------------effect_parse-----------------------------------
+void ADLParser::effect_parse(InstructForm *instr) {
+ char* desc = NULL;
+
+ skipws(); // Skip whitespace
+ if (_curchar != '(') {
+ parse_err(SYNERR, "missing '(' in effect definition\n");
+ return;
+ }
+ // Get list of effect-operand pairs and insert into dictionary
+ else get_effectlist(instr->_effects, instr->_localNames, instr->_has_call);
+
+ // Debug Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr,"Effect description: %s\n", desc);
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing ';' in Effect definition\n");
+ }
+ next_char(); // Skip ';'
+
+}
+
+//------------------------------expand_parse-----------------------------------
+ExpandRule* ADLParser::expand_parse(InstructForm *instr) {
+ char *ident, *ident2;
+ NameAndList *instr_and_operands = NULL;
+ ExpandRule *exp = new ExpandRule();
+
+ // Expand is a block containing an ordered list of operands with initializers,
+ // or instructions, each of which has an ordered list of operands.
+ // Check for block delimiter
+ skipws(); // Skip leading whitespace
+ if ((_curchar != '%')
+ || (next_char(), (_curchar != '{')) ) { // If not open block
+ parse_err(SYNERR, "missing '%%{' in expand definition\n");
+ return(NULL);
+ }
+ next_char(); // Maintain the invariant
+ do {
+ ident = get_ident(); // Grab next identifier
+ if (ident == NULL) {
+ parse_err(SYNERR, "identifier expected at %c\n", _curchar);
+ continue;
+ }
+
+ // Check whether we should parse an instruction or operand.
+ const Form *form = _globalNames[ident];
+ bool parse_oper = false;
+ bool parse_ins = false;
+ if (form == NULL) {
+ skipws();
+ // Check whether this looks like an instruction specification. If so,
+ // just parse the instruction. The declaration of the instruction is
+ // not needed here.
+ if (_curchar == '(') parse_ins = true;
+ } else if (form->is_instruction()) {
+ parse_ins = true;
+ } else if (form->is_operand()) {
+ parse_oper = true;
+ } else {
+ parse_err(SYNERR, "instruction/operand name expected at %s\n", ident);
+ continue;
+ }
+
+ if (parse_oper) {
+ // This is a new operand
+ OperandForm *oper = form->is_operand();
+ if (oper == NULL) {
+ parse_err(SYNERR, "instruction/operand name expected at %s\n", ident);
+ continue;
+ }
+ // Throw the operand on the _newopers list
+ skipws();
+ ident = get_unique_ident(instr->_localNames,"Operand");
+ if (ident == NULL) {
+ parse_err(SYNERR, "identifier expected at %c\n", _curchar);
+ continue;
+ }
+ exp->_newopers.addName(ident);
+ // Add new operand to LocalNames
+ instr->_localNames.Insert(ident, oper);
+ // Grab any constructor code and save as a string
+ char *c = NULL;
+ skipws();
+ if (_curchar == '%') { // Need a constructor for the operand
+ c = find_cpp_block("Operand Constructor");
+ if (c == NULL) {
+ parse_err(SYNERR, "Invalid code block for operand constructor\n", _curchar);
+ continue;
+ }
+ // Add constructor to _newopconst Dict
+ exp->_newopconst.Insert(ident, c);
+ }
+ else if (_curchar != ';') { // If no constructor, need a ;
+ parse_err(SYNERR, "Missing ; in expand rule operand declaration\n");
+ continue;
+ }
+ else next_char(); // Skip the ;
+ skipws();
+ }
+ else {
+ assert(parse_ins, "sanity");
+ // Add instruction to list
+ instr_and_operands = new NameAndList(ident);
+ // Grab operands, build nameList of them, and then put into dictionary
+ skipws();
+ if (_curchar != '(') { // Check for parenthesized operand list
+ parse_err(SYNERR, "missing '(' in expand instruction declaration\n");
+ continue;
+ }
+ do {
+ next_char(); // skip open paren & comma characters
+ skipws();
+ if (_curchar == ')') break;
+ ident2 = get_ident();
+ skipws();
+ if (ident2 == NULL) {
+ parse_err(SYNERR, "identifier expected at %c\n", _curchar);
+ continue;
+ } // Check that you have a valid operand
+ const Form *form2 = instr->_localNames[ident2];
+ if (!form2) {
+ parse_err(SYNERR, "operand name expected at %s\n", ident2);
+ continue;
+ }
+ OperandForm *oper = form2->is_operand();
+ if (oper == NULL && !form2->is_opclass()) {
+ parse_err(SYNERR, "operand name expected at %s\n", ident2);
+ continue;
+ } // Add operand to list
+ instr_and_operands->add_entry(ident2);
+ } while(_curchar == ',');
+ if (_curchar != ')') {
+ parse_err(SYNERR, "missing ')'in expand instruction declaration\n");
+ continue;
+ }
+ next_char();
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing ';'in expand instruction declaration\n");
+ continue;
+ }
+ next_char();
+
+ // Record both instruction name and its operand list
+ exp->add_instruction(instr_and_operands);
+
+ skipws();
+ }
+
+ } while(_curchar != '%');
+ next_char();
+ if (_curchar != '}') {
+ parse_err(SYNERR, "missing '%%}' in expand rule definition\n");
+ return(NULL);
+ }
+ next_char();
+
+ // Debug Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr,"Expand Rule:\n");
+
+ skipws();
+ return (exp);
+}
+
+//------------------------------rewrite_parse----------------------------------
+RewriteRule* ADLParser::rewrite_parse(void) {
+ char* params = NULL;
+ char* desc = NULL;
+
+
+ // This feature targeted for second generation description language.
+
+ skipws(); // Skip whitespace
+ // Get parameters for rewrite
+ if ((params = get_paren_expr("rewrite parameters")) == NULL) {
+ parse_err(SYNERR, "missing '(' in rewrite rule\n");
+ return NULL;
+ }
+ // Debug Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr,"Rewrite parameters: %s\n", params);
+
+ // For now, grab entire block;
+ skipws();
+ if ( (desc = find_cpp_block("rewrite block")) == NULL ) {
+ parse_err(SYNERR, "incorrect or missing block for 'rewrite'.\n");
+ return NULL;
+ }
+ // Debug Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr,"Rewrite Rule: %s\n", desc);
+
+ skipws();
+ return (new RewriteRule(params,desc));
+}
+
+//------------------------------attr_parse-------------------------------------
+Attribute *ADLParser::attr_parse(char* ident) {
+ Attribute *attrib; // Attribute class
+ char *cost = NULL; // String representation of cost attribute
+
+ skipws(); // Skip leading whitespace
+ if ( (cost = get_paren_expr("attribute")) == NULL ) {
+ parse_err(SYNERR, "incorrect or missing expression for 'attribute'\n");
+ return NULL;
+ }
+ // Debug Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr,"Attribute: %s\n", cost);
+ if (_curchar != ';') {
+ parse_err(SYNERR, "missing ';' in attribute definition\n");
+ return NULL;
+ }
+ next_char(); // Point after the terminator
+
+ skipws();
+ attrib = new Attribute(ident,cost,INS_ATTR); // Build new predicate object
+ return attrib;
+}
+
+
+//------------------------------matchNode_parse--------------------------------
+MatchNode *ADLParser::matchNode_parse(FormDict &operands, int &depth, int &numleaves, bool atroot) {
+ // Count depth of parenthesis nesting for both left and right children
+ int lParens = depth;
+ int rParens = depth;
+
+ // MatchNode objects for left, right, and root of subtree.
+ MatchNode *lChild = NULL;
+ MatchNode *rChild = NULL;
+ char *token; // Identifier which may be opcode or operand
+
+ // Match expression starts with a '('
+ if (cur_char() != '(')
+ return NULL;
+
+ next_char(); // advance past '('
+
+ // Parse the opcode
+ token = get_ident(); // Get identifier, opcode
+ if (token == NULL) {
+ parse_err(SYNERR, "missing opcode in match expression\n");
+ return NULL;
+ }
+
+ // Take note if we see one of a few special operations - those that are
+ // treated differently on different architectures in the sense that on
+ // one architecture there is a match rule and on another there isn't (so
+ // a call will eventually be generated).
+
+ for (int i = _last_machine_leaf + 1; i < _last_opcode; i++) {
+ if (strcmp(token, NodeClassNames[i]) == 0) {
+ _AD.has_match_rule(i, true);
+ }
+ }
+
+ // Lookup the root value in the operands dict to perform substitution
+ const char *result = NULL; // Result type will be filled in later
+ const char *name = token; // local name associated with this node
+ const char *operation = token; // remember valid operation for later
+ const Form *form = operands[token];
+ OpClassForm *opcForm = form ? form->is_opclass() : NULL;
+ if (opcForm != NULL) {
+ // If this token is an entry in the local names table, record its type
+ if (!opcForm->ideal_only()) {
+ operation = opcForm->_ident;
+ result = operation; // Operands result in their own type
+ }
+ // Otherwise it is an ideal type, and so, has no local name
+ else name = NULL;
+ }
+
+ // Parse the operands
+ skipws();
+ if (cur_char() != ')') {
+
+ // Parse the left child
+ if (strcmp(operation,"Set"))
+ lChild = matchChild_parse(operands, lParens, numleaves, false);
+ else
+ lChild = matchChild_parse(operands, lParens, numleaves, true);
+
+ skipws();
+ if (cur_char() != ')' ) {
+ if(strcmp(operation, "Set"))
+ rChild = matchChild_parse(operands,rParens,numleaves,false);
+ else
+ rChild = matchChild_parse(operands,rParens,numleaves,true);
+ }
+ }
+
+ // Check for required ')'
+ skipws();
+ if (cur_char() != ')') {
+ parse_err(SYNERR, "missing ')' in match expression\n");
+ return NULL;
+ }
+ next_char(); // skip the ')'
+
+ MatchNode* mroot = new MatchNode(_AD,result,name,operation,lChild,rChild);
+
+ // If not the root, reduce this subtree to an internal operand
+ if (!atroot) {
+ mroot->build_internalop();
+ }
+ // depth is greater of left and right paths.
+ depth = (lParens > rParens) ? lParens : rParens;
+
+ return mroot;
+}
+
+
+//------------------------------matchChild_parse-------------------------------
+MatchNode *ADLParser::matchChild_parse(FormDict &operands, int &parens, int &numleaves, bool atroot) {
+ MatchNode *child = NULL;
+ const char *result = NULL;
+ const char *token = NULL;
+ const char *opType = NULL;
+
+ if (cur_char() == '(') { // child is an operation
+ ++parens;
+ child = matchNode_parse(operands, parens, numleaves, atroot);
+ }
+ else { // child is an operand
+ token = get_ident();
+ const Form *form = operands[token];
+ OpClassForm *opcForm = form ? form->is_opclass() : NULL;
+ if (opcForm != NULL) {
+ opType = opcForm->_ident;
+ result = opcForm->_ident; // an operand's result matches its type
+ } else {
+ parse_err(SYNERR, "undefined operand %s in match rule\n", token);
+ return NULL;
+ }
+
+ if (opType == NULL) {
+ parse_err(SYNERR, "missing type for argument '%s'\n", token);
+ }
+
+ child = new MatchNode(_AD, result, token, opType);
+ ++numleaves;
+ }
+
+ return child;
+}
+
+
+
+// ******************** Private Utility Functions *************************
+
+
+char* ADLParser::find_cpp_block(const char* description) {
+ char *next; // Pointer for finding block delimiters
+ char* cppBlock = NULL; // Beginning of C++ code block
+
+ if (_curchar == '%') { // Encoding is a C++ expression
+ next_char();
+ if (_curchar != '{') {
+ parse_err(SYNERR, "missing '{' in %s \n", description);
+ return NULL;
+ }
+ next_char(); // Skip block delimiter
+ skipws_no_preproc(); // Skip leading whitespace
+ cppBlock = _ptr; // Point to start of expression
+ int line = linenum();
+ next = _ptr + 1;
+ while(((_curchar != '%') || (*next != '}')) && (_curchar != '\0')) {
+ next_char_or_line();
+ next = _ptr+1; // Maintain the next pointer
+ } // Grab string
+ if (_curchar == '\0') {
+ parse_err(SYNERR, "invalid termination of %s \n", description);
+ return NULL;
+ }
+ *_ptr = '\0'; // Terminate string
+ _ptr += 2; // Skip block delimiter
+ _curchar = *_ptr; // Maintain invariant
+
+ // Prepend location descriptor, for debugging.
+ if (_AD._adlocation_debug) {
+ char* location = get_line_string(line);
+ char* end_loc = end_line_marker();
+ char* result = (char *)malloc(strlen(location) + strlen(cppBlock) + strlen(end_loc) + 1);
+ strcpy(result, location);
+ strcat(result, cppBlock);
+ strcat(result, end_loc);
+ cppBlock = result;
+ free(location);
+ }
+ }
+
+ return cppBlock;
+}
+
+// Move to the closing token of the expression we are currently at,
+// as defined by stop_chars. Match parens and quotes.
+char* ADLParser::get_expr(const char *desc, const char *stop_chars) {
+ char* expr = NULL;
+ int paren = 0;
+
+ expr = _ptr;
+ while (paren > 0 || !strchr(stop_chars, _curchar)) {
+ if (_curchar == '(') { // Down level of nesting
+ paren++; // Bump the parenthesis counter
+ next_char(); // maintain the invariant
+ }
+ else if (_curchar == ')') { // Up one level of nesting
+ if (paren == 0) {
+ // Paren underflow: We didn't encounter the required stop-char.
+ parse_err(SYNERR, "too many )'s, did not find %s after %s\n",
+ stop_chars, desc);
+ return NULL;
+ }
+ paren--; // Drop the parenthesis counter
+ next_char(); // Maintain the invariant
+ }
+ else if (_curchar == '"' || _curchar == '\'') {
+ int qchar = _curchar;
+ while (true) {
+ next_char();
+ if (_curchar == qchar) { next_char(); break; }
+ if (_curchar == '\\') next_char(); // superquote
+ if (_curchar == '\n' || _curchar == '\0') {
+ parse_err(SYNERR, "newline in string in %s\n", desc);
+ return NULL;
+ }
+ }
+ }
+ else if (_curchar == '%' && (_ptr[1] == '{' || _ptr[1] == '}')) {
+ // Make sure we do not stray into the next ADLC-level form.
+ parse_err(SYNERR, "unexpected %%%c in %s\n", _ptr[1], desc);
+ return NULL;
+ }
+ else if (_curchar == '\0') {
+ parse_err(SYNERR, "unexpected EOF in %s\n", desc);
+ return NULL;
+ }
+ else {
+ // Always walk over whitespace, comments, preprocessor directives, etc.
+ char* pre_skip_ptr = _ptr;
+ skipws();
+ // If the parser declined to make progress on whitespace,
+ // skip the next character, which is therefore NOT whitespace.
+ if (pre_skip_ptr == _ptr) {
+ next_char();
+ } else if (pre_skip_ptr+strlen(pre_skip_ptr) != _ptr+strlen(_ptr)) {
+ parse_err(SYNERR, "unimplemented: preprocessor must not elide subexpression in %s", desc);
+ }
+ }
+ }
+
+ assert(strchr(stop_chars, _curchar), "non-null return must be at stop-char");
+ *_ptr = '\0'; // Replace ')' or other stop-char with '\0'
+ return expr;
+}
+
+// Helper function around get_expr
+// Sets _curchar to '(' so that get_paren_expr will search for a matching ')'
+char *ADLParser::get_paren_expr(const char *description, bool include_location) {
+ int line = linenum();
+ if (_curchar != '(') // Escape if not valid starting position
+ return NULL;
+ next_char(); // Skip the required initial paren.
+ char *token2 = get_expr(description, ")");
+ if (_curchar == ')')
+ next_char(); // Skip required final paren.
+ int junk = 0;
+ if (include_location && _AD._adlocation_debug && !is_int_token(token2, junk)) {
+ // Prepend location descriptor, for debugging.
+ char* location = get_line_string(line);
+ char* end_loc = end_line_marker();
+ char* result = (char *)malloc(strlen(location) + strlen(token2) + strlen(end_loc) + 1);
+ strcpy(result, location);
+ strcat(result, token2);
+ strcat(result, end_loc);
+ token2 = result;
+ free(location);
+ }
+ return token2;
+}
+
+//------------------------------get_ident_common-------------------------------
+// Looks for an identifier in the buffer, and turns it into a null terminated
+// string(still inside the file buffer). Returns a pointer to the string or
+// NULL if some other token is found instead.
+char *ADLParser::get_ident_common(bool do_preproc) {
+ register char c;
+ char *start; // Pointer to start of token
+ char *end; // Pointer to end of token
+
+ if( _curline == NULL ) // Return NULL at EOF.
+ return NULL;
+
+ skipws_common(do_preproc); // Skip whitespace before identifier
+ start = end = _ptr; // Start points at first character
+ end--; // unwind end by one to prepare for loop
+ do {
+ end++; // Increment end pointer
+ c = *end; // Grab character to test
+ } while ( ((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z'))
+ || ((c >= '0') && (c <= '9'))
+ || ((c == '_')) || ((c == ':')) || ((c == '#')) );
+ if (start == end) { // We popped out on the first try
+ // It can occur that `start' contains the rest of the input file.
+ // In this case the output should be truncated.
+ if (strlen(start) > 24) {
+ char buf[32];
+ strncpy(buf, start, 20);
+ buf[20] = '\0';
+ strcat(buf, "[...]");
+ parse_err(SYNERR, "Identifier expected, but found '%s'.", buf);
+ } else {
+ parse_err(SYNERR, "Identifier expected, but found '%s'.", start);
+ }
+ start = NULL;
+ }
+ else {
+ _curchar = c; // Save the first character of next token
+ *end = '\0'; // NULL terminate the string in place
+ }
+ _ptr = end; // Reset _ptr to point to next char after token
+
+ // Make sure we do not try to use #defined identifiers. If start is
+ // NULL an error was already reported.
+ if (do_preproc && start != NULL) {
+ const char* def = _AD.get_preproc_def(start);
+ if (def != NULL && strcmp(def, start)) {
+ const char* def1 = def;
+ const char* def2 = _AD.get_preproc_def(def1);
+ // implement up to 2 levels of #define
+ if (def2 != NULL && strcmp(def2, def1)) {
+ def = def2;
+ const char* def3 = _AD.get_preproc_def(def2);
+ if (def3 != NULL && strcmp(def3, def2) && strcmp(def3, def1)) {
+ parse_err(SYNERR, "unimplemented: using %s defined as %s => %s => %s",
+ start, def1, def2, def3);
+ }
+ }
+ start = strdup(def);
+ }
+ }
+
+ return start; // Pointer to token in filebuf
+}
+
+//------------------------------get_ident_dup----------------------------------
+// Looks for an identifier in the buffer, and returns a duplicate
+// or NULL if some other token is found instead.
+char *ADLParser::get_ident_dup(void) {
+ char *ident = get_ident();
+
+ // Duplicate an identifier before returning and restore string.
+ if( ident != NULL ) {
+ ident = strdup(ident); // Copy the string
+ *_ptr = _curchar; // and replace Nil with original character
+ }
+
+ return ident;
+}
+
+//----------------------get_ident_or_literal_constant--------------------------
+// Looks for an identifier in the buffer, or a parenthesized expression.
+char *ADLParser::get_ident_or_literal_constant(const char* description) {
+ char* param = NULL;
+ skipws();
+ if (_curchar == '(') {
+ // Grab a constant expression.
+ param = get_paren_expr(description);
+ if (param[0] != '(') {
+ char* buf = (char*) malloc(strlen(param) + 3);
+ sprintf(buf, "(%s)", param);
+ param = buf;
+ }
+ assert(is_literal_constant(param),
+ "expr must be recognizable as a constant");
+ } else {
+ param = get_ident();
+ }
+ return param;
+}
+
+//------------------------------get_rep_var_ident-----------------------------
+// Do NOT duplicate,
+// Leave nil terminator in buffer
+// Preserve initial '$'(s) in string
+char *ADLParser::get_rep_var_ident(void) {
+ // Remember starting point
+ char *rep_var = _ptr;
+
+ // Check for replacement variable indicator '$' and pass if present
+ if ( _curchar == '$' ) {
+ next_char();
+ }
+ // Check for a subfield indicator, a second '$', and pass if present
+ if ( _curchar == '$' ) {
+ next_char();
+ }
+
+ // Check for a control indicator, a third '$':
+ if ( _curchar == '$' ) {
+ next_char();
+ }
+
+ // Check for more than three '$'s in sequence, SYNERR
+ if( _curchar == '$' ) {
+ parse_err(SYNERR, "Replacement variables and field specifiers can not start with '$$$$'");
+ next_char();
+ return NULL;
+ }
+
+ // Nil terminate the variable name following the '$'
+ char *rep_var_name = get_ident();
+ assert( rep_var_name != NULL,
+ "Missing identifier after replacement variable indicator '$'");
+
+ return rep_var;
+}
+
+
+
+//------------------------------get_rep_var_ident_dup-------------------------
+// Return the next replacement variable identifier, skipping first '$'
+// given a pointer into a line of the buffer.
+// Null terminates string, still inside the file buffer,
+// Returns a pointer to a copy of the string, or NULL on failure
+char *ADLParser::get_rep_var_ident_dup(void) {
+ if( _curchar != '$' ) return NULL;
+
+ next_char(); // Move past the '$'
+ char *rep_var = _ptr; // Remember starting point
+
+ // Check for a subfield indicator, a second '$':
+ if ( _curchar == '$' ) {
+ next_char();
+ }
+
+ // Check for a control indicator, a third '$':
+ if ( _curchar == '$' ) {
+ next_char();
+ }
+
+ // Check for more than three '$'s in sequence, SYNERR
+ if( _curchar == '$' ) {
+ parse_err(SYNERR, "Replacement variables and field specifiers can not start with '$$$$'");
+ next_char();
+ return NULL;
+ }
+
+ // Nil terminate the variable name following the '$'
+ char *rep_var_name = get_ident();
+ assert( rep_var_name != NULL,
+ "Missing identifier after replacement variable indicator '$'");
+ rep_var = strdup(rep_var); // Copy the string
+ *_ptr = _curchar; // and replace Nil with original character
+
+ return rep_var;
+}
+
+
+//------------------------------get_unique_ident------------------------------
+// Looks for an identifier in the buffer, terminates it with a NULL,
+// and checks that it is unique
+char *ADLParser::get_unique_ident(FormDict& dict, const char* nameDescription){
+ char* ident = get_ident();
+
+ if (ident == NULL) {
+ parse_err(SYNERR, "missing %s identifier at %c\n", nameDescription, _curchar);
+ }
+ else {
+ if (dict[ident] != NULL) {
+ parse_err(SYNERR, "duplicate name %s for %s\n", ident, nameDescription);
+ ident = NULL;
+ }
+ }
+
+ return ident;
+}
+
+
+//------------------------------get_int----------------------------------------
+// Looks for a character string integer in the buffer, and turns it into an int
+// invokes a parse_err if the next token is not an integer.
+// This routine does not leave the integer null-terminated.
+int ADLParser::get_int(void) {
+ register char c;
+ char *start; // Pointer to start of token
+ char *end; // Pointer to end of token
+ int result; // Storage for integer result
+
+ if( _curline == NULL ) // Return NULL at EOF.
+ return 0;
+
+ skipws(); // Skip whitespace before identifier
+ start = end = _ptr; // Start points at first character
+ c = *end; // Grab character to test
+ while ((c >= '0' && c <= '9') || (c == '-' && end == start)) {
+ end++; // Increment end pointer
+ c = *end; // Grab character to test
+ }
+ if (start == end) { // We popped out on the first try
+ parse_err(SYNERR, "integer expected at %c\n", c);
+ result = 0;
+ }
+ else {
+ _curchar = c; // Save the first character of next token
+ *end = '\0'; // NULL terminate the string in place
+ result = atoi(start); // Convert the string to an integer
+ *end = _curchar; // Restore buffer to original condition
+ }
+
+ // Reset _ptr to next char after token
+ _ptr = end;
+
+ return result; // integer
+}
+
+
+//------------------------------get_relation_dup------------------------------
+// Looks for a relational operator in the buffer
+// invokes a parse_err if the next token is not a relation
+// This routine creates a duplicate of the string in the buffer.
+char *ADLParser::get_relation_dup(void) {
+ char *result = NULL; // relational operator being returned
+
+ if( _curline == NULL ) // Return NULL at EOF.
+ return NULL;
+
+ skipws(); // Skip whitespace before relation
+ char *start = _ptr; // Store start of relational operator
+ char first = *_ptr; // the first character
+ if( (first == '=') || (first == '!') || (first == '<') || (first == '>') ) {
+ next_char();
+ char second = *_ptr; // the second character
+ if( second == '=' ) {
+ next_char();
+ char tmp = *_ptr;
+ *_ptr = '\0'; // NULL terminate
+ result = strdup(start); // Duplicate the string
+ *_ptr = tmp; // restore buffer
+ } else {
+ parse_err(SYNERR, "relational operator expected at %s\n", _ptr);
+ }
+ } else {
+ parse_err(SYNERR, "relational operator expected at %s\n", _ptr);
+ }
+
+ return result;
+}
+
+
+
+//------------------------------get_oplist-------------------------------------
+// Looks for identifier pairs where first must be the name of an operand, and
+// second must be a name unique in the scope of this instruction. Stores the
+// names with a pointer to the OpClassForm of their type in a local name table.
+void ADLParser::get_oplist(NameList ¶meters, FormDict &operands) {
+ OpClassForm *opclass = NULL;
+ char *ident = NULL;
+
+ do {
+ next_char(); // skip open paren & comma characters
+ skipws();
+ if (_curchar == ')') break;
+
+ // Get operand type, and check it against global name table
+ ident = get_ident();
+ if (ident == NULL) {
+ parse_err(SYNERR, "optype identifier expected at %c\n", _curchar);
+ return;
+ }
+ else {
+ const Form *form = _globalNames[ident];
+ if( form == NULL ) {
+ parse_err(SYNERR, "undefined operand type %s\n", ident);
+ return;
+ }
+
+ // Check for valid operand type
+ OpClassForm *opc = form->is_opclass();
+ OperandForm *oper = form->is_operand();
+ if((oper == NULL) && (opc == NULL)) {
+ parse_err(SYNERR, "identifier %s not operand type\n", ident);
+ return;
+ }
+ opclass = opc;
+ }
+ // Debugging Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr, "\tOperand Type: %s\t", ident);
+
+ // Get name of operand and add it to local name table
+ if( (ident = get_unique_ident(operands, "operand")) == NULL) {
+ return;
+ }
+ // Parameter names must not be global names.
+ if( _globalNames[ident] != NULL ) {
+ parse_err(SYNERR, "Reuse of global name %s as operand.\n",ident);
+ return;
+ }
+ operands.Insert(ident, opclass);
+ parameters.addName(ident);
+
+ // Debugging Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr, "\tOperand Name: %s\n", ident);
+ skipws();
+ } while(_curchar == ',');
+
+ if (_curchar != ')') parse_err(SYNERR, "missing ')'\n");
+ else {
+ next_char(); // set current character position past the close paren
+ }
+}
+
+
+//------------------------------get_effectlist---------------------------------
+// Looks for identifier pairs where first must be the name of a pre-defined,
+// effect, and the second must be the name of an operand defined in the
+// operand list of this instruction. Stores the names with a pointer to the
+// effect form in a local effects table.
+void ADLParser::get_effectlist(FormDict &effects, FormDict &operands, bool& has_call) {
+ OperandForm *opForm;
+ Effect *eForm;
+ char *ident;
+
+ do {
+ next_char(); // skip open paren & comma characters
+ skipws();
+ if (_curchar == ')') break;
+
+ // Get effect type, and check it against global name table
+ ident = get_ident();
+ if (ident == NULL) {
+ parse_err(SYNERR, "effect type identifier expected at %c\n", _curchar);
+ return;
+ }
+ else {
+ // Check for valid effect type
+ const Form *form = _globalNames[ident];
+ if( form == NULL ) {
+ parse_err(SYNERR, "undefined effect type %s\n", ident);
+ return;
+ }
+ else {
+ if( (eForm = form->is_effect()) == NULL) {
+ parse_err(SYNERR, "identifier %s not effect type\n", ident);
+ return;
+ }
+ }
+ }
+ // Debugging Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr, "\tEffect Type: %s\t", ident);
+ skipws();
+ if (eForm->is(Component::CALL)) {
+ if (_AD._adl_debug > 1) fprintf(stderr, "\n");
+ has_call = true;
+ } else {
+ // Get name of operand and check that it is in the local name table
+ if( (ident = get_unique_ident(effects, "effect")) == NULL) {
+ parse_err(SYNERR, "missing operand identifier in effect list\n");
+ return;
+ }
+ const Form *form = operands[ident];
+ opForm = form ? form->is_operand() : NULL;
+ if( opForm == NULL ) {
+ if( form && form->is_opclass() ) {
+ const char* cname = form->is_opclass()->_ident;
+ parse_err(SYNERR, "operand classes are illegal in effect lists (found %s %s)\n", cname, ident);
+ } else {
+ parse_err(SYNERR, "undefined operand %s in effect list\n", ident);
+ }
+ return;
+ }
+ // Add the pair to the effects table
+ effects.Insert(ident, eForm);
+ // Debugging Stuff
+ if (_AD._adl_debug > 1) fprintf(stderr, "\tOperand Name: %s\n", ident);
+ }
+ skipws();
+ } while(_curchar == ',');
+
+ if (_curchar != ')') parse_err(SYNERR, "missing ')'\n");
+ else {
+ next_char(); // set current character position past the close paren
+ }
+}
+
+
+//-------------------------------preproc_line----------------------------------
+// A "#line" keyword has been seen, so parse the rest of the line.
+void ADLParser::preproc_line(void) {
+ int line = get_int();
+ skipws_no_preproc();
+ const char* file = NULL;
+ if (_curchar == '"') {
+ next_char(); // Move past the initial '"'
+ file = _ptr;
+ while (true) {
+ if (_curchar == '\n') {
+ parse_err(SYNERR, "missing '\"' at end of #line directive");
+ return;
+ }
+ if (_curchar == '"') {
+ *_ptr = '\0'; // Terminate the string
+ next_char();
+ skipws_no_preproc();
+ break;
+ }
+ next_char();
+ }
+ }
+ ensure_end_of_line();
+ if (file != NULL)
+ _AD._ADL_file._name = file;
+ _buf.set_linenum(line);
+}
+
+//------------------------------preproc_define---------------------------------
+// A "#define" keyword has been seen, so parse the rest of the line.
+void ADLParser::preproc_define(void) {
+ char* flag = get_ident_no_preproc();
+ skipws_no_preproc();
+ // only #define x y is supported for now
+ char* def = get_ident_no_preproc();
+ _AD.set_preproc_def(flag, def);
+ skipws_no_preproc();
+ if (_curchar != '\n') {
+ parse_err(SYNERR, "non-identifier in preprocessor definition\n");
+ }
+}
+
+//------------------------------preproc_undef----------------------------------
+// An "#undef" keyword has been seen, so parse the rest of the line.
+void ADLParser::preproc_undef(void) {
+ char* flag = get_ident_no_preproc();
+ skipws_no_preproc();
+ ensure_end_of_line();
+ _AD.set_preproc_def(flag, NULL);
+}
+
+
+
+//------------------------------parse_err--------------------------------------
+// Issue a parser error message, and skip to the end of the current line
+void ADLParser::parse_err(int flag, const char *fmt, ...) {
+ va_list args;
+
+ va_start(args, fmt);
+ if (flag == 1)
+ _AD._syntax_errs += _AD.emit_msg(0, flag, linenum(), fmt, args);
+ else if (flag == 2)
+ _AD._semantic_errs += _AD.emit_msg(0, flag, linenum(), fmt, args);
+ else
+ _AD._warnings += _AD.emit_msg(0, flag, linenum(), fmt, args);
+
+ int error_char = _curchar;
+ char* error_ptr = _ptr+1;
+ for(;*_ptr != '\n'; _ptr++) ; // Skip to the end of the current line
+ _curchar = '\n';
+ va_end(args);
+ _AD._no_output = 1;
+
+ if (flag == 1) {
+ char* error_tail = strchr(error_ptr, '\n');
+ char tem = *error_ptr;
+ error_ptr[-1] = '\0';
+ char* error_head = error_ptr-1;
+ while (error_head > _curline && *error_head) --error_head;
+ if (error_tail) *error_tail = '\0';
+ fprintf(stderr, "Error Context: %s>>>%c<<<%s\n",
+ error_head, error_char, error_ptr);
+ if (error_tail) *error_tail = '\n';
+ error_ptr[-1] = tem;
+ }
+}
+
+//---------------------------ensure_start_of_line------------------------------
+// A preprocessor directive has been encountered. Be sure it has fallen at
+// the beginning of a line, or else report an error.
+void ADLParser::ensure_start_of_line(void) {
+ if (_curchar == '\n') { next_line(); return; }
+ assert( _ptr >= _curline && _ptr < _curline+strlen(_curline),
+ "Must be able to find which line we are in" );
+
+ for (char *s = _curline; s < _ptr; s++) {
+ if (*s > ' ') {
+ parse_err(SYNERR, "'%c' must be at beginning of line\n", _curchar);
+ break;
+ }
+ }
+}
+
+//---------------------------ensure_end_of_line--------------------------------
+// A preprocessor directive has been parsed. Be sure there is no trailing
+// garbage at the end of this line. Set the scan point to the beginning of
+// the next line.
+void ADLParser::ensure_end_of_line(void) {
+ skipws_no_preproc();
+ if (_curchar != '\n' && _curchar != '\0') {
+ parse_err(SYNERR, "garbage char '%c' at end of line\n", _curchar);
+ } else {
+ next_char_or_line();
+ }
+}
+
+//---------------------------handle_preproc------------------------------------
+// The '#' character introducing a preprocessor directive has been found.
+// Parse the whole directive name (e.g., #define, #endif) and take appropriate
+// action. If we are in an "untaken" span of text, simply keep track of
+// #ifdef nesting structure, so we can find out when to start taking text
+// again. (In this state, we "sort of support" C's #if directives, enough
+// to disregard their associated #else and #endif lines.) If we are in a
+// "taken" span of text, there are two cases: "#define" and "#undef"
+// directives are preserved and passed up to the caller, which eventually
+// passes control to the top-level parser loop, which handles #define and
+// #undef directly. (This prevents these directives from occurring in
+// arbitrary positions in the AD file--we require better structure than C.)
+// In the other case, and #ifdef, #ifndef, #else, or #endif is silently
+// processed as whitespace, with the "taken" state of the text correctly
+// updated. This routine returns "false" exactly in the case of a "taken"
+// #define or #undef, which tells the caller that a preprocessor token
+// has appeared which must be handled explicitly by the parse loop.
+bool ADLParser::handle_preproc_token() {
+ assert(*_ptr == '#', "must be at start of preproc");
+ ensure_start_of_line();
+ next_char();
+ skipws_no_preproc();
+ char* start_ident = _ptr;
+ char* ident = (_curchar == '\n') ? NULL : get_ident_no_preproc();
+ if (ident == NULL) {
+ parse_err(SYNERR, "expected preprocessor command, got end of line\n");
+ } else if (!strcmp(ident, "ifdef") ||
+ !strcmp(ident, "ifndef")) {
+ char* flag = get_ident_no_preproc();
+ ensure_end_of_line();
+ // Test the identifier only if we are already in taken code:
+ bool flag_def = preproc_taken() && (_AD.get_preproc_def(flag) != NULL);
+ bool now_taken = !strcmp(ident, "ifdef") ? flag_def : !flag_def;
+ begin_if_def(now_taken);
+ } else if (!strcmp(ident, "if")) {
+ if (preproc_taken())
+ parse_err(SYNERR, "unimplemented: #%s %s", ident, _ptr+1);
+ next_line();
+ // Intelligently skip this nested C preprocessor directive:
+ begin_if_def(true);
+ } else if (!strcmp(ident, "else")) {
+ ensure_end_of_line();
+ invert_if_def();
+ } else if (!strcmp(ident, "endif")) {
+ ensure_end_of_line();
+ end_if_def();
+ } else if (preproc_taken()) {
+ // pass this token up to the main parser as "#define" or "#undef"
+ _ptr = start_ident;
+ _curchar = *--_ptr;
+ if( _curchar != '#' ) {
+ parse_err(SYNERR, "no space allowed after # in #define or #undef");
+ assert(_curchar == '#', "no space allowed after # in #define or #undef");
+ }
+ return false;
+ }
+ return true;
+}
+
+//---------------------------skipws_common-------------------------------------
+// Skip whitespace, including comments and newlines, while keeping an accurate
+// line count.
+// Maybe handle certain preprocessor constructs: #ifdef, #ifndef, #else, #endif
+void ADLParser::skipws_common(bool do_preproc) {
+ char *start = _ptr;
+ char *next = _ptr + 1;
+
+ if (*_ptr == '\0') {
+ // Check for string terminator
+ if (_curchar > ' ') return;
+ if (_curchar == '\n') {
+ if (!do_preproc) return; // let caller handle the newline
+ next_line();
+ _ptr = _curline; next = _ptr + 1;
+ }
+ else if (_curchar == '#' ||
+ (_curchar == '/' && (*next == '/' || *next == '*'))) {
+ parse_err(SYNERR, "unimplemented: comment token in a funny place");
+ }
+ }
+ while(_curline != NULL) { // Check for end of file
+ if (*_ptr == '\n') { // keep proper track of new lines
+ if (!do_preproc) break; // let caller handle the newline
+ next_line();
+ _ptr = _curline; next = _ptr + 1;
+ }
+ else if ((*_ptr == '/') && (*next == '/')) // C++ comment
+ do { _ptr++; next++; } while(*_ptr != '\n'); // So go to end of line
+ else if ((*_ptr == '/') && (*next == '*')) { // C comment
+ _ptr++; next++;
+ do {
+ _ptr++; next++;
+ if (*_ptr == '\n') { // keep proper track of new lines
+ next_line(); // skip newlines within comments
+ if (_curline == NULL) { // check for end of file
+ parse_err(SYNERR, "end-of-file detected inside comment\n");
+ break;
+ }
+ _ptr = _curline; next = _ptr + 1;
+ }
+ } while(!((*_ptr == '*') && (*next == '/'))); // Go to end of comment
+ _ptr = ++next; next++; // increment _ptr past comment end
+ }
+ else if (do_preproc && *_ptr == '#') {
+ // Note that this calls skipws_common(false) recursively!
+ bool preproc_handled = handle_preproc_token();
+ if (!preproc_handled) {
+ if (preproc_taken()) {
+ return; // short circuit
+ }
+ ++_ptr; // skip the preprocessor character
+ }
+ next = _ptr+1;
+ } else if(*_ptr > ' ' && !(do_preproc && !preproc_taken())) {
+ break;
+ }
+ else if (*_ptr == '"' || *_ptr == '\'') {
+ assert(do_preproc, "only skip strings if doing preproc");
+ // skip untaken quoted string
+ int qchar = *_ptr;
+ while (true) {
+ ++_ptr;
+ if (*_ptr == qchar) { ++_ptr; break; }
+ if (*_ptr == '\\') ++_ptr;
+ if (*_ptr == '\n' || *_ptr == '\0') {
+ parse_err(SYNERR, "newline in string");
+ break;
+ }
+ }
+ next = _ptr + 1;
+ }
+ else { ++_ptr; ++next; }
+ }
+ if( _curline != NULL ) // at end of file _curchar isn't valid
+ _curchar = *_ptr; // reset _curchar to maintain invariant
+}
+
+//---------------------------cur_char-----------------------------------------
+char ADLParser::cur_char() {
+ return (_curchar);
+}
+
+//---------------------------next_char-----------------------------------------
+void ADLParser::next_char() {
+ if (_curchar == '\n') parse_err(WARN, "must call next_line!");
+ _curchar = *++_ptr;
+ // if ( _curchar == '\n' ) {
+ // next_line();
+ // }
+}
+
+//---------------------------next_char_or_line---------------------------------
+void ADLParser::next_char_or_line() {
+ if ( _curchar != '\n' ) {
+ _curchar = *++_ptr;
+ } else {
+ next_line();
+ _ptr = _curline;
+ _curchar = *_ptr; // maintain invariant
+ }
+}
+
+//---------------------------next_line-----------------------------------------
+void ADLParser::next_line() {
+ _curline = _buf.get_line();
+ _curchar = ' ';
+}
+
+//------------------------get_line_string--------------------------------------
+// Prepended location descriptor, for debugging.
+// Must return a malloced string (that can be freed if desired).
+char* ADLParser::get_line_string(int linenum) {
+ const char* file = _AD._ADL_file._name;
+ int line = linenum ? linenum : this->linenum();
+ char* location = (char *)malloc(strlen(file) + 100);
+ sprintf(location, "\n#line %d \"%s\"\n", line, file);
+ return location;
+}
+
+//-------------------------is_literal_constant---------------------------------
+bool ADLParser::is_literal_constant(const char *param) {
+ if (param[0] == 0) return false; // null string
+ if (param[0] == '(') return true; // parenthesized expression
+ if (param[0] == '0' && (param[1] == 'x' || param[1] == 'X')) {
+ // Make sure it's a hex constant.
+ int i = 2;
+ do {
+ if( !ADLParser::is_hex_digit(*(param+i)) ) return false;
+ ++i;
+ } while( *(param+i) != 0 );
+ return true;
+ }
+ return false;
+}
+
+//---------------------------is_hex_digit--------------------------------------
+bool ADLParser::is_hex_digit(char digit) {
+ return ((digit >= '0') && (digit <= '9'))
+ ||((digit >= 'a') && (digit <= 'f'))
+ ||((digit >= 'A') && (digit <= 'F'));
+}
+
+//---------------------------is_int_token--------------------------------------
+bool ADLParser::is_int_token(const char* token, int& intval) {
+ const char* cp = token;
+ while (*cp != '\0' && *cp <= ' ') cp++;
+ if (*cp == '-') cp++;
+ int ndigit = 0;
+ while (*cp >= '0' && *cp <= '9') { cp++; ndigit++; }
+ while (*cp != '\0' && *cp <= ' ') cp++;
+ if (ndigit == 0 || *cp != '\0') {
+ return false;
+ }
+ intval = atoi(token);
+ return true;
+}
+
+static const char* skip_expr_ws(const char* str) {
+ const char * cp = str;
+ while (cp[0]) {
+ if (cp[0] <= ' ') {
+ ++cp;
+ } else if (cp[0] == '#') {
+ ++cp;
+ while (cp[0] == ' ') ++cp;
+ assert(0 == strncmp(cp, "line", 4), "must be a #line directive");
+ const char* eol = strchr(cp, '\n');
+ assert(eol != NULL, "must find end of line");
+ if (eol == NULL) eol = cp + strlen(cp);
+ cp = eol;
+ } else {
+ break;
+ }
+ }
+ return cp;
+}
+
+//-----------------------equivalent_expressions--------------------------------
+bool ADLParser::equivalent_expressions(const char* str1, const char* str2) {
+ if (str1 == str2)
+ return true;
+ else if (str1 == NULL || str2 == NULL)
+ return false;
+ const char* cp1 = str1;
+ const char* cp2 = str2;
+ char in_quote = '\0';
+ while (cp1[0] && cp2[0]) {
+ if (!in_quote) {
+ // skip spaces and/or cpp directives
+ const char* cp1a = skip_expr_ws(cp1);
+ const char* cp2a = skip_expr_ws(cp2);
+ if (cp1a > cp1 && cp2a > cp2) {
+ cp1 = cp1a; cp2 = cp2a;
+ continue;
+ }
+ if (cp1a > cp1 || cp2a > cp2) break; // fail
+ }
+ // match one non-space char
+ if (cp1[0] != cp2[0]) break; // fail
+ char ch = cp1[0];
+ cp1++; cp2++;
+ // watch for quotes
+ if (in_quote && ch == '\\') {
+ if (cp1[0] != cp2[0]) break; // fail
+ if (!cp1[0]) break;
+ cp1++; cp2++;
+ }
+ if (in_quote && ch == in_quote) {
+ in_quote = '\0';
+ } else if (!in_quote && (ch == '"' || ch == '\'')) {
+ in_quote = ch;
+ }
+ }
+ return (!cp1[0] && !cp2[0]);
+}
+
+
+//-------------------------------trim------------------------------------------
+void ADLParser::trim(char* &token) {
+ while (*token <= ' ') token++;
+ char* end = token + strlen(token);
+ while (end > token && *(end-1) <= ' ') --end;
+ *end = '\0';
+}