2 import IR.Tree.FlagExpressionNode;
3 import IR.Tree.DNFFlag;
4 import IR.Tree.DNFFlagAtom;
5 import IR.Tree.TagExpressionList;
11 public class BuildCode {
14 Hashtable paramstable;
19 String localsprefix="___locals___";
20 String paramsprefix="___params___";
21 public static boolean GENERATEPRECISEGC=false;
22 public static String PREFIX="";
23 public static String arraytype="ArrayObject";
26 private int maxtaskparams=0;
27 ClassDescriptor[] cdarray;
28 TypeDescriptor[] arraytable;
30 public BuildCode(State st, Hashtable temptovar, TypeUtil typeutil) {
32 this.temptovar=temptovar;
33 paramstable=new Hashtable();
34 tempstable=new Hashtable();
35 fieldorder=new Hashtable();
36 flagorder=new Hashtable();
37 this.typeutil=typeutil;
38 virtualcalls=new Virtual(state);
41 /** The buildCode method outputs C code for all the methods. The Flat
42 * versions of the methods must already be generated and stored in
43 * the State object. */
45 public void buildCode() {
46 /* Create output streams to write to */
47 PrintWriter outclassdefs=null;
48 PrintWriter outstructs=null;
49 PrintWriter outrepairstructs=null;
50 PrintWriter outmethodheader=null;
51 PrintWriter outmethod=null;
52 PrintWriter outvirtual=null;
53 PrintWriter outtask=null;
54 PrintWriter outtaskdefs=null;
57 OutputStream str=new FileOutputStream(PREFIX+"structdefs.h");
58 outstructs=new java.io.PrintWriter(str, true);
59 str=new FileOutputStream(PREFIX+"methodheaders.h");
60 outmethodheader=new java.io.PrintWriter(str, true);
61 str=new FileOutputStream(PREFIX+"classdefs.h");
62 outclassdefs=new java.io.PrintWriter(str, true);
63 str=new FileOutputStream(PREFIX+"methods.c");
64 outmethod=new java.io.PrintWriter(str, true);
65 str=new FileOutputStream(PREFIX+"virtualtable.h");
66 outvirtual=new java.io.PrintWriter(str, true);
68 str=new FileOutputStream(PREFIX+"task.h");
69 outtask=new java.io.PrintWriter(str, true);
70 str=new FileOutputStream(PREFIX+"taskdefs.c");
71 outtaskdefs=new java.io.PrintWriter(str, true);
73 if (state.structfile!=null) {
74 str=new FileOutputStream(PREFIX+state.structfile+".struct");
75 outrepairstructs=new java.io.PrintWriter(str, true);
77 } catch (Exception e) {
82 /* Build the virtual dispatch tables */
83 buildVirtualTables(outvirtual);
88 outmethodheader.println("#ifndef METHODHEADERS_H");
89 outmethodheader.println("#define METHODHEADERS_H");
90 outmethodheader.println("#include \"structdefs.h\"");
92 outstructs.println("#ifndef STRUCTDEFS_H");
93 outstructs.println("#define STRUCTDEFS_H");
94 outstructs.println("#include \"classdefs.h\"");
98 /* Output types for short array and string */
99 outstructs.println("#define STRINGARRAYTYPE "+
100 (state.getArrayNumber(
101 (new TypeDescriptor(typeutil.getClass(TypeUtil.StringClass))).makeArray(state))+state.numClasses()));
103 outstructs.println("#define OBJECTARRAYTYPE "+
104 (state.getArrayNumber(
105 (new TypeDescriptor(typeutil.getClass(TypeUtil.ObjectClass))).makeArray(state))+state.numClasses()));
108 outstructs.println("#define STRINGTYPE "+typeutil.getClass(TypeUtil.StringClass).getId());
109 outstructs.println("#define CHARARRAYTYPE "+
110 (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.CHAR)).makeArray(state))+state.numClasses()));
112 outstructs.println("#define BYTEARRAYTYPE "+
113 (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.BYTE)).makeArray(state))+state.numClasses()));
115 outstructs.println("#define BYTEARRAYARRAYTYPE "+
116 (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.BYTE)).makeArray(state).makeArray(state))+state.numClasses()));
118 outstructs.println("#define NUMCLASSES "+state.numClasses());
120 outstructs.println("#define STARTUPTYPE "+typeutil.getClass(TypeUtil.StartupClass).getId());
121 outstructs.println("#define TAGTYPE "+typeutil.getClass(TypeUtil.TagClass).getId());
122 outstructs.println("#define TAGARRAYTYPE "+
123 (state.getArrayNumber(new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass)).makeArray(state))+state.numClasses()));
126 // Output the C class declarations
127 // These could mutually reference each other
129 outclassdefs.println("#include <pthread.h>");
131 outclassdefs.println("struct "+arraytype+";");
133 Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
134 while(it.hasNext()) {
135 ClassDescriptor cn=(ClassDescriptor)it.next();
136 outclassdefs.println("struct "+cn.getSafeSymbol()+";");
138 outclassdefs.println("");
140 //Print out definition for array type
141 outclassdefs.println("struct "+arraytype+" {");
142 outclassdefs.println(" int type;");
144 outclassdefs.println(" pthread_t tid;");
145 outclassdefs.println(" void * lockentry;");
146 outclassdefs.println(" int lockcount;");
150 outclassdefs.println(" int flag;");
151 outclassdefs.println(" void * flagptr;");
153 printClassStruct(typeutil.getClass(TypeUtil.ObjectClass), outclassdefs);
154 outclassdefs.println(" int ___length___;");
155 outclassdefs.println("};\n");
158 //Print out definitions for task types
159 outtask.println("struct parameterdescriptor {");
160 outtask.println("int type;");
161 outtask.println("int numberterms;");
162 outtask.println("int *intarray;");
163 outtask.println("void * queue;");
164 outtask.println("int numbertags;");
165 outtask.println("int *tagarray;");
166 outtask.println("};");
168 outtask.println("struct taskdescriptor {");
169 outtask.println("void * taskptr;");
170 outtask.println("int numParameters;");
171 outtask.println("int numTotal;");
172 outtask.println("struct parameterdescriptor **descriptorarray;");
173 outtask.println("char * name;");
174 outtask.println("};");
175 outtask.println("extern struct taskdescriptor * taskarray[];");
176 outtask.println("extern numtasks;");
180 // Output function prototypes and structures for parameters
181 it=state.getClassSymbolTable().getDescriptorsIterator();
182 while(it.hasNext()) {
183 ClassDescriptor cn=(ClassDescriptor)it.next();
184 generateCallStructs(cn, outclassdefs, outstructs, outmethodheader);
188 /* Map flags to integers */
189 it=state.getClassSymbolTable().getDescriptorsIterator();
190 while(it.hasNext()) {
191 ClassDescriptor cn=(ClassDescriptor)it.next();
195 generateTaskStructs(outstructs, outmethodheader);
198 outmethodheader.println("#endif");
200 outmethodheader.close();
202 /* Build the actual methods */
203 outmethod.println("#include \"methodheaders.h\"");
204 outmethod.println("#include \"virtualtable.h\"");
205 outmethod.println("#include <runtime.h>");
207 outmethod.println("#include <thread.h>");
208 if (state.main!=null) {
209 outmethod.println("#include <string.h>");
212 if (state.CONSCHECK) {
213 outmethod.println("#include \"checkers.h\"");
215 outclassdefs.println("extern int classsize[];");
216 outclassdefs.println("extern int hasflags[];");
217 outclassdefs.println("extern int * pointerarray[];");
218 outclassdefs.println("extern int supertypes[];");
220 //Store the sizes of classes & array elements
221 generateSizeArray(outmethod);
223 //Store table of supertypes
224 generateSuperTypeTable(outmethod);
226 //Store the layout of classes
227 generateLayoutStructs(outmethod);
229 /* Generate code for methods */
230 Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
231 while(classit.hasNext()) {
232 ClassDescriptor cn=(ClassDescriptor)classit.next();
233 Iterator methodit=cn.getMethods();
234 while(methodit.hasNext()) {
235 /* Classify parameters */
236 MethodDescriptor md=(MethodDescriptor)methodit.next();
237 FlatMethod fm=state.getMethodFlat(md);
238 if (!md.getModifiers().isNative())
239 generateFlatMethod(fm,outmethod);
244 /* Compile task based program */
245 outtaskdefs.println("#include \"task.h\"");
246 outtaskdefs.println("#include \"methodheaders.h\"");
247 Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
248 while(taskit.hasNext()) {
249 TaskDescriptor td=(TaskDescriptor)taskit.next();
250 FlatMethod fm=state.getMethodFlat(td);
251 generateFlatMethod(fm, outmethod);
252 generateTaskDescriptor(outtaskdefs, fm, td);
256 //Output task descriptors
257 taskit=state.getTaskSymbolTable().getDescriptorsIterator();
258 outtaskdefs.println("struct taskdescriptor * taskarray[]= {");
260 while(taskit.hasNext()) {
261 TaskDescriptor td=(TaskDescriptor)taskit.next();
265 outtaskdefs.println(",");
266 outtaskdefs.print("&task_"+td.getSafeSymbol());
268 outtaskdefs.println("};");
271 outtaskdefs.println("int numtasks="+state.getTaskSymbolTable().getValueSet().size()+";");
273 } else if (state.main!=null) {
274 /* Generate main method */
275 outmethod.println("int main(int argc, const char *argv[]) {");
276 outmethod.println(" int i;");
277 if (GENERATEPRECISEGC) {
278 outmethod.println(" struct ArrayObject * stringarray=allocate_newarray(NULL, STRINGARRAYTYPE, argc-1);");
280 outmethod.println(" struct ArrayObject * stringarray=allocate_newarray(STRINGARRAYTYPE, argc-1);");
283 outmethod.println("initializethreads();");
285 outmethod.println(" for(i=1;i<argc;i++) {");
286 outmethod.println(" int length=strlen(argv[i]);");
287 if (GENERATEPRECISEGC) {
288 outmethod.println(" struct ___String___ *newstring=NewString(NULL, argv[i], length);");
290 outmethod.println(" struct ___String___ *newstring=NewString(argv[i], length);");
292 outmethod.println(" ((void **)(((char *)& stringarray->___length___)+sizeof(int)))[i-1]=newstring;");
293 outmethod.println(" }");
296 MethodDescriptor md=typeutil.getMain();
297 ClassDescriptor cd=typeutil.getMainClass();
299 outmethod.println(" {");
300 if (GENERATEPRECISEGC) {
301 outmethod.print(" struct "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
302 outmethod.println("1, NULL,"+"stringarray};");
303 outmethod.println(" "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(& __parameterlist__);");
305 outmethod.println(" "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(stringarray);");
306 outmethod.println(" }");
309 outmethod.println("pthread_mutex_lock(&gclistlock);");
310 outmethod.println("threadcount--;");
311 outmethod.println("pthread_cond_signal(&gccond);");
312 outmethod.println("pthread_mutex_unlock(&gclistlock);");
313 outmethod.println("pthread_exit(NULL);");
315 outmethod.println("}");
318 outstructs.println("#define MAXTASKPARAMS "+maxtaskparams);
321 /* Output structure definitions for repair tool */
322 if (state.structfile!=null) {
323 buildRepairStructs(outrepairstructs);
324 outrepairstructs.close();
326 outstructs.println("#endif");
332 private int maxcount=0;
334 private void buildRepairStructs(PrintWriter outrepairstructs) {
335 Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
336 while(classit.hasNext()) {
337 ClassDescriptor cn=(ClassDescriptor)classit.next();
338 outrepairstructs.println("structure "+cn.getSymbol()+" {");
339 outrepairstructs.println(" int __type__;");
341 outrepairstructs.println(" int __flag__;");
342 outrepairstructs.println(" int __flagptr__;");
344 printRepairStruct(cn, outrepairstructs);
345 outrepairstructs.println("}\n");
348 for(int i=0;i<state.numArrays();i++) {
349 TypeDescriptor tdarray=arraytable[i];
350 TypeDescriptor tdelement=tdarray.dereference();
351 outrepairstructs.println("structure "+arraytype+"_"+state.getArrayNumber(tdarray)+" {");
352 outrepairstructs.println(" int __type__;");
353 printRepairStruct(typeutil.getClass(TypeUtil.ObjectClass), outrepairstructs);
354 outrepairstructs.println(" int length;");
356 // Need to add support to repair tool for this
357 if (tdelement.isClass()||tdelement.isArray())
358 outrepairstructs.println(" "+tdelement.getRepairSymbol()+" * elem[this.length];");
360 outrepairstructs.println(" "+tdelement.getRepairSymbol()+" elem[this.length];");
362 outrepairstructs.println("}\n");
367 private void printRepairStruct(ClassDescriptor cn, PrintWriter output) {
368 ClassDescriptor sp=cn.getSuperDesc();
370 printRepairStruct(sp, output);
372 Vector fields=(Vector)fieldorder.get(cn);
374 for(int i=0;i<fields.size();i++) {
375 FieldDescriptor fd=(FieldDescriptor)fields.get(i);
376 if (fd.getType().isArray()) {
377 output.println(" "+arraytype+"_"+ state.getArrayNumber(fd.getType()) +" * "+fd.getSymbol()+";");
378 } else if (fd.getType().isClass())
379 output.println(" "+fd.getType().getRepairSymbol()+" * "+fd.getSymbol()+";");
380 else if (fd.getType().isFloat())
381 output.println(" int "+fd.getSymbol()+"; /* really float */");
383 output.println(" "+fd.getType().getRepairSymbol()+" "+fd.getSymbol()+";");
387 /** This method outputs TaskDescriptor information */
388 void generateTaskDescriptor(PrintWriter output, FlatMethod fm, TaskDescriptor task) {
389 for (int i=0;i<task.numParameters();i++) {
390 VarDescriptor param_var=task.getParameter(i);
391 TypeDescriptor param_type=task.getParamType(i);
392 FlagExpressionNode param_flag=task.getFlag(param_var);
393 TagExpressionList param_tag=task.getTag(param_var);
396 if (param_flag==null) {
397 output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
398 output.println("0x0, 0x0 };");
402 DNFFlag dflag=param_flag.getDNF();
403 dnfterms=dflag.size();
405 Hashtable flags=(Hashtable)flagorder.get(param_type.getClassDesc());
406 output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
407 for(int j=0;j<dflag.size();j++) {
410 Vector term=dflag.get(j);
413 for(int k=0;k<term.size();k++) {
414 DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
415 FlagDescriptor fd=dfa.getFlag();
416 boolean negated=dfa.getNegated();
417 int flagid=1<<((Integer)flags.get(fd)).intValue();
422 output.print("0x"+Integer.toHexString(andmask)+", 0x"+Integer.toHexString(checkmask));
424 output.println("};");
427 output.println("int parametertag_"+i+"_"+task.getSafeSymbol()+"[]={");
428 //BUG...added next line to fix, test with any task program
430 for(int j=0;j<param_tag.numTags();j++) {
433 /* for each tag we need */
434 /* which slot it is */
435 /* what type it is */
436 TagVarDescriptor tvd=(TagVarDescriptor)task.getParameterTable().get(param_tag.getName(j));
437 TempDescriptor tmp=param_tag.getTemp(j);
438 int slot=fm.getTagInt(tmp);
439 output.println(slot+", "+state.getTagId(tvd.getTag()));
441 output.println("};");
443 output.println("struct parameterdescriptor parameter_"+i+"_"+task.getSafeSymbol()+"={");
444 output.println("/* type */"+param_type.getClassDesc().getId()+",");
445 output.println("/* number of DNF terms */"+dnfterms+",");
446 output.println("parameterdnf_"+i+"_"+task.getSafeSymbol()+",");
447 output.println("0,");
448 //BUG, added next line to fix and else statement...test
449 //with any task program
451 output.println("/* number of tags */"+param_tag.numTags()+",");
453 output.println("/* number of tags */ 0,");
454 output.println("parametertag_"+i+"_"+task.getSafeSymbol());
455 output.println("};");
459 output.println("struct parameterdescriptor * parameterdescriptors_"+task.getSafeSymbol()+"[] = {");
460 for (int i=0;i<task.numParameters();i++) {
463 output.print("¶meter_"+i+"_"+task.getSafeSymbol());
465 output.println("};");
467 output.println("struct taskdescriptor task_"+task.getSafeSymbol()+"={");
468 output.println("&"+task.getSafeSymbol()+",");
469 output.println("/* number of parameters */" +task.numParameters() + ",");
470 int numtotal=task.numParameters()+fm.numTags();
471 output.println("/* number total parameters */" +numtotal + ",");
472 output.println("parameterdescriptors_"+task.getSafeSymbol()+",");
473 output.println("\""+task.getSymbol()+"\"");
474 output.println("};");
478 /** The buildVirtualTables method outputs the virtual dispatch
479 * tables for methods. */
481 private void buildVirtualTables(PrintWriter outvirtual) {
482 Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
483 while(classit.hasNext()) {
484 ClassDescriptor cd=(ClassDescriptor)classit.next();
485 if (virtualcalls.getMethodCount(cd)>maxcount)
486 maxcount=virtualcalls.getMethodCount(cd);
488 MethodDescriptor[][] virtualtable=new MethodDescriptor[state.numClasses()+state.numArrays()][maxcount];
490 /* Fill in virtual table */
491 classit=state.getClassSymbolTable().getDescriptorsIterator();
492 while(classit.hasNext()) {
493 ClassDescriptor cd=(ClassDescriptor)classit.next();
494 fillinRow(cd, virtualtable, cd.getId());
497 ClassDescriptor objectcd=typeutil.getClass(TypeUtil.ObjectClass);
498 Iterator arrayit=state.getArrayIterator();
499 while(arrayit.hasNext()) {
500 TypeDescriptor td=(TypeDescriptor)arrayit.next();
501 int id=state.getArrayNumber(td);
502 fillinRow(objectcd, virtualtable, id+state.numClasses());
505 outvirtual.print("void * virtualtable[]={");
506 boolean needcomma=false;
507 for(int i=0;i<state.numClasses()+state.numArrays();i++) {
508 for(int j=0;j<maxcount;j++) {
510 outvirtual.print(", ");
511 if (virtualtable[i][j]!=null) {
512 MethodDescriptor md=virtualtable[i][j];
513 outvirtual.print("& "+md.getClassDesc().getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
515 outvirtual.print("0");
519 outvirtual.println("");
521 outvirtual.println("};");
525 private void fillinRow(ClassDescriptor cd, MethodDescriptor[][] virtualtable, int rownum) {
526 /* Get inherited methods */
527 if (cd.getSuperDesc()!=null)
528 fillinRow(cd.getSuperDesc(), virtualtable, rownum);
529 /* Override them with our methods */
530 for(Iterator it=cd.getMethods();it.hasNext();) {
531 MethodDescriptor md=(MethodDescriptor)it.next();
532 if (md.isStatic()||md.getReturnType()==null)
534 int methodnum=virtualcalls.getMethodNumber(md);
535 virtualtable[rownum][methodnum]=md;
539 /** Generate array that contains the sizes of class objects. The
540 * object allocation functions in the runtime use this
543 private void generateSizeArray(PrintWriter outclassdefs) {
544 outclassdefs.print("int classsize[]={");
545 Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
546 cdarray=new ClassDescriptor[state.numClasses()];
547 while(it.hasNext()) {
548 ClassDescriptor cd=(ClassDescriptor)it.next();
549 cdarray[cd.getId()]=cd;
551 boolean needcomma=false;
552 for(int i=0;i<state.numClasses();i++) {
554 outclassdefs.print(", ");
555 outclassdefs.print("sizeof(struct "+cdarray[i].getSafeSymbol()+")");
559 arraytable=new TypeDescriptor[state.numArrays()];
561 Iterator arrayit=state.getArrayIterator();
562 while(arrayit.hasNext()) {
563 TypeDescriptor td=(TypeDescriptor)arrayit.next();
564 int id=state.getArrayNumber(td);
568 for(int i=0;i<state.numArrays();i++) {
570 outclassdefs.print(", ");
571 TypeDescriptor tdelement=arraytable[i].dereference();
572 if (tdelement.isArray()||tdelement.isClass())
573 outclassdefs.print("sizeof(void *)");
575 outclassdefs.print("sizeof("+tdelement.getSafeSymbol()+")");
579 outclassdefs.println("};");
582 /** Constructs params and temp objects for each method or task.
583 * These objects tell the compiler which temps need to be
586 private void generateTempStructs(FlatMethod fm) {
587 MethodDescriptor md=fm.getMethod();
588 TaskDescriptor task=fm.getTask();
590 ParamsObject objectparams=md!=null?new ParamsObject(md,tag++):new ParamsObject(task, tag++);
592 paramstable.put(md, objectparams);
594 paramstable.put(task, objectparams);
596 for(int i=0;i<fm.numParameters();i++) {
597 TempDescriptor temp=fm.getParameter(i);
598 TypeDescriptor type=temp.getType();
599 if ((type.isPtr()||type.isArray())&&GENERATEPRECISEGC)
600 objectparams.addPtr(temp);
602 objectparams.addPrim(temp);
605 for(int i=0;i<fm.numTags();i++) {
606 TempDescriptor temp=fm.getTag(i);
607 if (GENERATEPRECISEGC)
608 objectparams.addPtr(temp);
610 objectparams.addPrim(temp);
613 TempObject objecttemps=md!=null?new TempObject(objectparams,md,tag++):new TempObject(objectparams, task, tag++);
615 tempstable.put(md, objecttemps);
617 tempstable.put(task, objecttemps);
619 for(Iterator nodeit=fm.getNodeSet().iterator();nodeit.hasNext();) {
620 FlatNode fn=(FlatNode)nodeit.next();
621 TempDescriptor[] writes=fn.writesTemps();
622 for(int i=0;i<writes.length;i++) {
623 TempDescriptor temp=writes[i];
624 TypeDescriptor type=temp.getType();
625 if ((type.isPtr()||type.isArray())&&GENERATEPRECISEGC)
626 objecttemps.addPtr(temp);
628 objecttemps.addPrim(temp);
633 private void generateLayoutStructs(PrintWriter output) {
634 Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
635 while(it.hasNext()) {
636 ClassDescriptor cn=(ClassDescriptor)it.next();
637 output.println("int "+cn.getSafeSymbol()+"_pointers[]={");
638 Iterator allit=cn.getFieldTable().getAllDescriptorsIterator();
640 while(allit.hasNext()) {
641 FieldDescriptor fd=(FieldDescriptor)allit.next();
642 TypeDescriptor type=fd.getType();
643 if (type.isPtr()||type.isArray())
647 allit=cn.getFieldTable().getAllDescriptorsIterator();
648 while(allit.hasNext()) {
649 FieldDescriptor fd=(FieldDescriptor)allit.next();
650 TypeDescriptor type=fd.getType();
651 if (type.isPtr()||type.isArray()) {
653 output.print("((int)&(((struct "+cn.getSafeSymbol() +" *)0)->"+fd.getSafeSymbol()+"))");
656 output.println("};");
658 output.println("int * pointerarray[]={");
659 boolean needcomma=false;
660 for(int i=0;i<state.numClasses();i++) {
661 ClassDescriptor cn=cdarray[i];
665 output.print(cn.getSafeSymbol()+"_pointers");
668 for(int i=0;i<state.numArrays();i++) {
670 output.println(", ");
671 TypeDescriptor tdelement=arraytable[i].dereference();
672 if (tdelement.isArray()||tdelement.isClass())
673 output.print("((int *)1)");
679 output.println("};");
681 output.println("int hasflags[]={");
682 for(int i=0;i<state.numClasses();i++) {
683 ClassDescriptor cn=cdarray[i];
685 output.println(", ");
692 output.println("};");
695 /** Print out table to give us supertypes */
696 private void generateSuperTypeTable(PrintWriter output) {
697 output.println("int supertypes[]={");
698 boolean needcomma=false;
699 for(int i=0;i<state.numClasses();i++) {
700 ClassDescriptor cn=cdarray[i];
704 if (cn.getSuperDesc()!=null) {
705 ClassDescriptor cdsuper=cn.getSuperDesc();
706 output.print(cdsuper.getId());
710 output.println("};");
713 /** Force consistent field ordering between inherited classes. */
715 private void printClassStruct(ClassDescriptor cn, PrintWriter classdefout) {
716 ClassDescriptor sp=cn.getSuperDesc();
718 printClassStruct(sp, classdefout);
720 if (!fieldorder.containsKey(cn)) {
721 Vector fields=new Vector();
722 fieldorder.put(cn,fields);
723 Iterator fieldit=cn.getFields();
724 while(fieldit.hasNext()) {
725 FieldDescriptor fd=(FieldDescriptor)fieldit.next();
726 if (sp==null||!sp.getFieldTable().contains(fd.getSymbol()))
730 Vector fields=(Vector)fieldorder.get(cn);
732 for(int i=0;i<fields.size();i++) {
733 FieldDescriptor fd=(FieldDescriptor)fields.get(i);
734 if (fd.getType().isClass()||fd.getType().isArray())
735 classdefout.println(" struct "+fd.getType().getSafeSymbol()+" * "+fd.getSafeSymbol()+";");
737 classdefout.println(" "+fd.getType().getSafeSymbol()+" "+fd.getSafeSymbol()+";");
742 /* Map flags to integers consistently between inherited
745 private void mapFlags(ClassDescriptor cn) {
746 ClassDescriptor sp=cn.getSuperDesc();
750 if (!flagorder.containsKey(cn)) {
751 Hashtable flags=new Hashtable();
752 flagorder.put(cn,flags);
754 Hashtable superflags=(Hashtable)flagorder.get(sp);
755 Iterator superflagit=superflags.keySet().iterator();
756 while(superflagit.hasNext()) {
757 FlagDescriptor fd=(FlagDescriptor)superflagit.next();
758 Integer number=(Integer)superflags.get(fd);
759 flags.put(fd, number);
760 if ((number.intValue()+1)>max)
761 max=number.intValue()+1;
765 Iterator flagit=cn.getFlags();
766 while(flagit.hasNext()) {
767 FlagDescriptor fd=(FlagDescriptor)flagit.next();
768 if (sp==null||!sp.getFlagTable().contains(fd.getSymbol()))
769 flags.put(fd, new Integer(max++));
775 /** This function outputs (1) structures that parameters are
776 * passed in (when PRECISE GC is enabled) and (2) function
777 * prototypes for the methods */
779 private void generateCallStructs(ClassDescriptor cn, PrintWriter classdefout, PrintWriter output, PrintWriter headersout) {
780 /* Output class structure */
781 classdefout.println("struct "+cn.getSafeSymbol()+" {");
782 classdefout.println(" int type;");
784 classdefout.println(" pthread_t tid;");
785 classdefout.println(" void * lockentry;");
786 classdefout.println(" int lockcount;");
790 classdefout.println(" int flag;");
791 classdefout.println(" void * flagptr;");
793 printClassStruct(cn, classdefout);
794 classdefout.println("};\n");
796 /* Cycle through methods */
797 Iterator methodit=cn.getMethods();
798 while(methodit.hasNext()) {
799 /* Classify parameters */
800 MethodDescriptor md=(MethodDescriptor)methodit.next();
801 FlatMethod fm=state.getMethodFlat(md);
802 generateTempStructs(fm);
804 ParamsObject objectparams=(ParamsObject) paramstable.get(md);
805 TempObject objecttemps=(TempObject) tempstable.get(md);
807 /* Output parameter structure */
808 if (GENERATEPRECISEGC) {
809 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params {");
810 output.println(" int size;");
811 output.println(" void * next;");
812 for(int i=0;i<objectparams.numPointers();i++) {
813 TempDescriptor temp=objectparams.getPointer(i);
814 output.println(" struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
816 output.println("};\n");
819 /* Output temp structure */
820 if (GENERATEPRECISEGC) {
821 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals {");
822 output.println(" int size;");
823 output.println(" void * next;");
824 for(int i=0;i<objecttemps.numPointers();i++) {
825 TempDescriptor temp=objecttemps.getPointer(i);
826 if (temp.getType().isNull())
827 output.println(" void * "+temp.getSafeSymbol()+";");
829 output.println(" struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
831 output.println("};\n");
834 /* Output method declaration */
835 if (md.getReturnType()!=null) {
836 if (md.getReturnType().isClass()||md.getReturnType().isArray())
837 headersout.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
839 headersout.print(md.getReturnType().getSafeSymbol()+" ");
841 //catch the constructor case
842 headersout.print("void ");
843 headersout.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
845 boolean printcomma=false;
846 if (GENERATEPRECISEGC) {
847 headersout.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
851 //output parameter list
852 for(int i=0;i<objectparams.numPrimitives();i++) {
853 TempDescriptor temp=objectparams.getPrimitive(i);
855 headersout.print(", ");
857 if (temp.getType().isClass()||temp.getType().isArray())
858 headersout.print("struct " + temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
860 headersout.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
862 headersout.println(");\n");
867 /** This function outputs (1) structures that parameters are
868 * passed in (when PRECISE GC is enabled) and (2) function
869 * prototypes for the tasks */
871 private void generateTaskStructs(PrintWriter output, PrintWriter headersout) {
872 /* Cycle through tasks */
873 Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
875 while(taskit.hasNext()) {
876 /* Classify parameters */
877 TaskDescriptor task=(TaskDescriptor)taskit.next();
878 FlatMethod fm=state.getMethodFlat(task);
879 generateTempStructs(fm);
881 ParamsObject objectparams=(ParamsObject) paramstable.get(task);
882 TempObject objecttemps=(TempObject) tempstable.get(task);
884 /* Output parameter structure */
885 if (GENERATEPRECISEGC) {
886 output.println("struct "+task.getSafeSymbol()+"_params {");
888 output.println(" int size;");
889 output.println(" void * next;");
890 for(int i=0;i<objectparams.numPointers();i++) {
891 TempDescriptor temp=objectparams.getPointer(i);
892 output.println(" struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
895 output.println("};\n");
896 if ((objectparams.numPointers()+fm.numTags())>maxtaskparams) {
897 maxtaskparams=objectparams.numPointers()+fm.numTags();
901 /* Output temp structure */
902 if (GENERATEPRECISEGC) {
903 output.println("struct "+task.getSafeSymbol()+"_locals {");
904 output.println(" int size;");
905 output.println(" void * next;");
906 for(int i=0;i<objecttemps.numPointers();i++) {
907 TempDescriptor temp=objecttemps.getPointer(i);
908 if (temp.getType().isNull())
909 output.println(" void * "+temp.getSafeSymbol()+";");
910 else if(temp.getType().isTag())
911 output.println(" struct "+
912 (new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
914 output.println(" struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
916 output.println("};\n");
919 /* Output task declaration */
920 headersout.print("void " + task.getSafeSymbol()+"(");
922 boolean printcomma=false;
923 if (GENERATEPRECISEGC) {
924 headersout.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
926 headersout.print("void * parameterarray[]");
927 headersout.println(");\n");
931 /** Generate code for flatmethod fm. */
933 private void generateFlatMethod(FlatMethod fm, PrintWriter output) {
934 MethodDescriptor md=fm.getMethod();
935 TaskDescriptor task=fm.getTask();
937 ClassDescriptor cn=md!=null?md.getClassDesc():null;
939 ParamsObject objectparams=(ParamsObject)paramstable.get(md!=null?md:task);
941 generateHeader(fm, md!=null?md:task,output);
943 TempObject objecttemp=(TempObject) tempstable.get(md!=null?md:task);
946 if (GENERATEPRECISEGC) {
948 output.print(" struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
950 output.print(" struct "+task.getSafeSymbol()+"_locals "+localsprefix+"={");
952 output.print(objecttemp.numPointers()+",");
953 output.print(paramsprefix);
954 for(int j=0;j<objecttemp.numPointers();j++)
955 output.print(", NULL");
956 output.println("};");
959 for(int i=0;i<objecttemp.numPrimitives();i++) {
960 TempDescriptor td=objecttemp.getPrimitive(i);
961 TypeDescriptor type=td.getType();
963 output.println(" void * "+td.getSafeSymbol()+";");
964 else if (type.isClass()||type.isArray())
965 output.println(" struct "+type.getSafeSymbol()+" * "+td.getSafeSymbol()+";");
967 output.println(" "+type.getSafeSymbol()+" "+td.getSafeSymbol()+";");
970 /* Generate labels first */
971 HashSet tovisit=new HashSet();
972 HashSet visited=new HashSet();
974 Hashtable nodetolabel=new Hashtable();
975 tovisit.add(fm.getNext(0));
976 FlatNode current_node=null;
979 //Node needs a label if it is
980 while(!tovisit.isEmpty()) {
981 FlatNode fn=(FlatNode)tovisit.iterator().next();
984 for(int i=0;i<fn.numNext();i++) {
985 FlatNode nn=fn.getNext(i);
988 nodetolabel.put(nn,new Integer(labelindex++));
990 if (!visited.contains(nn)&&!tovisit.contains(nn)) {
994 nodetolabel.put(nn,new Integer(labelindex++));
999 if (state.THREAD&&GENERATEPRECISEGC) {
1000 output.println("checkcollect(&"+localsprefix+");");
1003 //Do the actual code generation
1004 tovisit=new HashSet();
1005 visited=new HashSet();
1006 tovisit.add(fm.getNext(0));
1007 while(current_node!=null||!tovisit.isEmpty()) {
1008 if (current_node==null) {
1009 current_node=(FlatNode)tovisit.iterator().next();
1010 tovisit.remove(current_node);
1012 visited.add(current_node);
1013 if (nodetolabel.containsKey(current_node))
1014 output.println("L"+nodetolabel.get(current_node)+":");
1015 if (state.INSTRUCTIONFAILURE) {
1017 output.println("if ((++instructioncount)>failurecount) {instructioncount=0;injectinstructionfailure();}");
1020 output.println("if ((--instructioncount)==0) injectinstructionfailure();");
1022 if (current_node.numNext()==0) {
1024 generateFlatNode(fm, current_node, output);
1025 if (current_node.kind()!=FKind.FlatReturnNode) {
1026 output.println(" return;");
1029 } else if(current_node.numNext()==1) {
1031 generateFlatNode(fm, current_node, output);
1032 FlatNode nextnode=current_node.getNext(0);
1033 if (visited.contains(nextnode)) {
1034 output.println("goto L"+nodetolabel.get(nextnode)+";");
1037 current_node=nextnode;
1038 } else if (current_node.numNext()==2) {
1041 generateFlatCondBranch(fm, (FlatCondBranch)current_node, "L"+nodetolabel.get(current_node.getNext(1)), output);
1042 if (!visited.contains(current_node.getNext(1)))
1043 tovisit.add(current_node.getNext(1));
1044 if (visited.contains(current_node.getNext(0))) {
1045 output.println("goto L"+nodetolabel.get(current_node.getNext(0))+";");
1048 current_node=current_node.getNext(0);
1049 } else throw new Error();
1053 output.println("}\n\n");
1056 /** Generate text string that corresponds to the Temp td. */
1057 private String generateTemp(FlatMethod fm, TempDescriptor td) {
1058 MethodDescriptor md=fm.getMethod();
1059 TaskDescriptor task=fm.getTask();
1060 TempObject objecttemps=(TempObject) tempstable.get(md!=null?md:task);
1062 if (objecttemps.isLocalPrim(td)||objecttemps.isParamPrim(td)) {
1063 return td.getSafeSymbol();
1066 if (objecttemps.isLocalPtr(td)) {
1067 return localsprefix+"."+td.getSafeSymbol();
1070 if (objecttemps.isParamPtr(td)) {
1071 return paramsprefix+"->"+td.getSafeSymbol();
1076 private void generateFlatNode(FlatMethod fm, FlatNode fn, PrintWriter output) {
1078 case FKind.FlatTagDeclaration:
1079 generateFlatTagDeclaration(fm, (FlatTagDeclaration) fn,output);
1081 case FKind.FlatCall:
1082 generateFlatCall(fm, (FlatCall) fn,output);
1084 case FKind.FlatFieldNode:
1085 generateFlatFieldNode(fm, (FlatFieldNode) fn,output);
1087 case FKind.FlatElementNode:
1088 generateFlatElementNode(fm, (FlatElementNode) fn,output);
1090 case FKind.FlatSetElementNode:
1091 generateFlatSetElementNode(fm, (FlatSetElementNode) fn,output);
1093 case FKind.FlatSetFieldNode:
1094 generateFlatSetFieldNode(fm, (FlatSetFieldNode) fn,output);
1097 generateFlatNew(fm, (FlatNew) fn,output);
1099 case FKind.FlatOpNode:
1100 generateFlatOpNode(fm, (FlatOpNode) fn,output);
1102 case FKind.FlatCastNode:
1103 generateFlatCastNode(fm, (FlatCastNode) fn,output);
1105 case FKind.FlatLiteralNode:
1106 generateFlatLiteralNode(fm, (FlatLiteralNode) fn,output);
1108 case FKind.FlatReturnNode:
1109 generateFlatReturnNode(fm, (FlatReturnNode) fn,output);
1112 output.println("/* nop */");
1114 case FKind.FlatBackEdge:
1115 if (state.THREAD&&GENERATEPRECISEGC) {
1116 output.println("checkcollect(&"+localsprefix+");");
1118 output.println("/* nop */");
1120 case FKind.FlatCheckNode:
1121 generateFlatCheckNode(fm, (FlatCheckNode) fn, output);
1123 case FKind.FlatFlagActionNode:
1124 generateFlatFlagActionNode(fm, (FlatFlagActionNode) fn, output);
1131 private void generateFlatCheckNode(FlatMethod fm, FlatCheckNode fcn, PrintWriter output) {
1133 if (state.CONSCHECK) {
1134 String specname=fcn.getSpec();
1135 String varname="repairstate___";
1136 output.println("{");
1137 output.println("struct "+specname+"_state * "+varname+"=allocate"+specname+"_state();");
1139 TempDescriptor[] temps=fcn.getTemps();
1140 String[] vars=fcn.getVars();
1141 for(int i=0;i<temps.length;i++) {
1142 output.println(varname+"->"+vars[i]+"=(int)"+generateTemp(fm, temps[i])+";");
1145 output.println("if (doanalysis"+specname+"("+varname+")) {");
1146 output.println("free"+specname+"_state("+varname+");");
1147 output.println("} else {");
1148 output.println("/* Bad invariant */");
1149 output.println("free"+specname+"_state("+varname+");");
1150 output.println("abort_task();");
1151 output.println("}");
1153 output.println("}");
1157 private void generateFlatCall(FlatMethod fm, FlatCall fc, PrintWriter output) {
1158 MethodDescriptor md=fc.getMethod();
1159 ParamsObject objectparams=(ParamsObject) paramstable.get(md);
1160 ClassDescriptor cn=md.getClassDesc();
1161 output.println("{");
1162 if (GENERATEPRECISEGC) {
1163 output.print(" struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
1165 output.print(objectparams.numPointers());
1166 // output.print(objectparams.getUID());
1167 output.print(", & "+localsprefix);
1168 if (fc.getThis()!=null) {
1170 output.print("(struct "+md.getThis().getType().getSafeSymbol() +" *)"+ generateTemp(fm,fc.getThis()));
1172 for(int i=0;i<fc.numArgs();i++) {
1173 Descriptor var=md.getParameter(i);
1174 TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1175 if (objectparams.isParamPtr(paramtemp)) {
1176 TempDescriptor targ=fc.getArg(i);
1178 TypeDescriptor td=md.getParamType(i);
1180 output.print("(struct "+(new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol() +" *)"+generateTemp(fm, targ));
1182 output.print("(struct "+md.getParamType(i).getSafeSymbol() +" *)"+generateTemp(fm, targ));
1185 output.println("};");
1190 if (fc.getReturnTemp()!=null)
1191 output.print(generateTemp(fm,fc.getReturnTemp())+"=");
1193 /* Do we need to do virtual dispatch? */
1194 if (md.isStatic()||md.getReturnType()==null||singleCall(fc.getThis().getType().getClassDesc(),md)) {
1195 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
1199 if (md.getReturnType().isClass()||md.getReturnType().isArray())
1200 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1202 output.print(md.getReturnType().getSafeSymbol()+" ");
1203 output.print("(*)(");
1205 boolean printcomma=false;
1206 if (GENERATEPRECISEGC) {
1207 output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * ");
1212 for(int i=0;i<objectparams.numPrimitives();i++) {
1213 TempDescriptor temp=objectparams.getPrimitive(i);
1217 if (temp.getType().isClass()||temp.getType().isArray())
1218 output.print("struct " + temp.getType().getSafeSymbol()+" * ");
1220 output.print(temp.getType().getSafeSymbol());
1223 output.print("))virtualtable["+generateTemp(fm,fc.getThis())+"->type*"+maxcount+"+"+virtualcalls.getMethodNumber(md)+"])");
1227 boolean needcomma=false;
1228 if (GENERATEPRECISEGC) {
1229 output.print("&__parameterlist__");
1232 if (fc.getThis()!=null) {
1233 TypeDescriptor ptd=md.getThis().getType();
1234 if (ptd.isClass()&&!ptd.isArray())
1235 output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1236 output.print(generateTemp(fm,fc.getThis()));
1240 for(int i=0;i<fc.numArgs();i++) {
1241 Descriptor var=md.getParameter(i);
1242 TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1243 if (objectparams.isParamPrim(paramtemp)) {
1244 TempDescriptor targ=fc.getArg(i);
1248 TypeDescriptor ptd=md.getParamType(i);
1249 if (ptd.isClass()&&!ptd.isArray())
1250 output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1251 output.print(generateTemp(fm, targ));
1255 output.println(");");
1256 output.println(" }");
1259 private boolean singleCall(ClassDescriptor thiscd, MethodDescriptor md) {
1260 Set subclasses=typeutil.getSubClasses(thiscd);
1261 if (subclasses==null)
1263 for(Iterator classit=subclasses.iterator();classit.hasNext();) {
1264 ClassDescriptor cd=(ClassDescriptor)classit.next();
1265 Set possiblematches=cd.getMethodTable().getSet(md.getSymbol());
1266 for(Iterator matchit=possiblematches.iterator();matchit.hasNext();) {
1267 MethodDescriptor matchmd=(MethodDescriptor)matchit.next();
1268 if (md.matches(matchmd))
1275 private void generateFlatFieldNode(FlatMethod fm, FlatFieldNode ffn, PrintWriter output) {
1276 output.println(generateTemp(fm, ffn.getDst())+"="+ generateTemp(fm,ffn.getSrc())+"->"+ ffn.getField().getSafeSymbol()+";");
1279 private void generateFlatSetFieldNode(FlatMethod fm, FlatSetFieldNode fsfn, PrintWriter output) {
1280 if (fsfn.getField().getSymbol().equals("length")&&fsfn.getDst().getType().isArray())
1281 throw new Error("Can't set array length");
1282 output.println(generateTemp(fm, fsfn.getDst())+"->"+ fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc())+";");
1285 private void generateFlatElementNode(FlatMethod fm, FlatElementNode fen, PrintWriter output) {
1286 TypeDescriptor elementtype=fen.getSrc().getType().dereference();
1289 if (elementtype.isArray()||elementtype.isClass())
1292 type=elementtype.getSafeSymbol()+" ";
1294 if (fen.needsBoundsCheck()) {
1295 output.println("if ("+generateTemp(fm, fen.getIndex())+"< 0 || "+generateTemp(fm, fen.getIndex())+" >= "+generateTemp(fm,fen.getSrc()) + "->___length___)");
1296 output.println("failedboundschk();");
1299 output.println(generateTemp(fm, fen.getDst())+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc())+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex())+"];");
1302 private void generateFlatSetElementNode(FlatMethod fm, FlatSetElementNode fsen, PrintWriter output) {
1303 //TODO: need dynamic check to make sure this assignment is actually legal
1304 //Because Object[] could actually be something more specific...ie. Integer[]
1306 TypeDescriptor elementtype=fsen.getDst().getType().dereference();
1309 if (elementtype.isArray()||elementtype.isClass())
1312 type=elementtype.getSafeSymbol()+" ";
1314 if (fsen.needsBoundsCheck()) {
1315 output.println("if ("+generateTemp(fm, fsen.getIndex())+"< 0 || "+generateTemp(fm, fsen.getIndex())+" >= "+generateTemp(fm,fsen.getDst()) + "->___length___)");
1316 output.println("failedboundschk();");
1319 output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst())+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex())+"]="+generateTemp(fm,fsen.getSrc())+";");
1322 private void generateFlatNew(FlatMethod fm, FlatNew fn, PrintWriter output) {
1323 if (fn.getType().isArray()) {
1324 int arrayid=state.getArrayNumber(fn.getType())+state.numClasses();
1325 if (GENERATEPRECISEGC) {
1326 output.println(generateTemp(fm,fn.getDst())+"=allocate_newarray(&"+localsprefix+", "+arrayid+", "+generateTemp(fm, fn.getSize())+");");
1328 output.println(generateTemp(fm,fn.getDst())+"=allocate_newarray("+arrayid+", "+generateTemp(fm, fn.getSize())+");");
1331 if (GENERATEPRECISEGC) {
1332 output.println(generateTemp(fm,fn.getDst())+"=allocate_new(&"+localsprefix+", "+fn.getType().getClassDesc().getId()+");");
1334 output.println(generateTemp(fm,fn.getDst())+"=allocate_new("+fn.getType().getClassDesc().getId()+");");
1340 private void generateFlatTagDeclaration(FlatMethod fm, FlatTagDeclaration fn, PrintWriter output) {
1341 if (GENERATEPRECISEGC) {
1342 output.println(generateTemp(fm,fn.getDst())+"=allocate_tag(&"+localsprefix+", "+state.getTagId(fn.getType())+");");
1344 output.println(generateTemp(fm,fn.getDst())+"=allocate_tag("+state.getTagId(fn.getType())+");");
1348 private void generateFlatOpNode(FlatMethod fm, FlatOpNode fon, PrintWriter output) {
1350 if (fon.getRight()!=null)
1351 output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+fon.getOp().toString()+generateTemp(fm,fon.getRight())+";");
1352 else if (fon.getOp().getOp()==Operation.ASSIGN)
1353 output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+";");
1354 else if (fon.getOp().getOp()==Operation.UNARYPLUS)
1355 output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+";");
1356 else if (fon.getOp().getOp()==Operation.UNARYMINUS)
1357 output.println(generateTemp(fm, fon.getDest())+" = -"+generateTemp(fm, fon.getLeft())+";");
1358 else if (fon.getOp().getOp()==Operation.LOGIC_NOT)
1359 output.println(generateTemp(fm, fon.getDest())+" = !"+generateTemp(fm, fon.getLeft())+";");
1361 output.println(generateTemp(fm, fon.getDest())+fon.getOp().toString()+generateTemp(fm, fon.getLeft())+";");
1364 private void generateFlatCastNode(FlatMethod fm, FlatCastNode fcn, PrintWriter output) {
1365 /* TODO: Do type check here */
1366 if (fcn.getType().isArray()) {
1368 } else if (fcn.getType().isClass())
1369 output.println(generateTemp(fm,fcn.getDst())+"=(struct "+fcn.getType().getSafeSymbol()+" *)"+generateTemp(fm,fcn.getSrc())+";");
1371 output.println(generateTemp(fm,fcn.getDst())+"=("+fcn.getType().getSafeSymbol()+")"+generateTemp(fm,fcn.getSrc())+";");
1374 private void generateFlatLiteralNode(FlatMethod fm, FlatLiteralNode fln, PrintWriter output) {
1375 if (fln.getValue()==null)
1376 output.println(generateTemp(fm, fln.getDst())+"=0;");
1377 else if (fln.getType().getSymbol().equals(TypeUtil.StringClass)) {
1378 if (GENERATEPRECISEGC) {
1379 output.println(generateTemp(fm, fln.getDst())+"=NewString(&"+localsprefix+", \""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
1381 output.println(generateTemp(fm, fln.getDst())+"=NewString(\""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
1383 } else if (fln.getType().isBoolean()) {
1384 if (((Boolean)fln.getValue()).booleanValue())
1385 output.println(generateTemp(fm, fln.getDst())+"=1;");
1387 output.println(generateTemp(fm, fln.getDst())+"=0;");
1388 } else if (fln.getType().isChar()) {
1389 String st=FlatLiteralNode.escapeString(fln.getValue().toString());
1390 output.println(generateTemp(fm, fln.getDst())+"='"+st+"';");
1392 output.println(generateTemp(fm, fln.getDst())+"="+fln.getValue()+";");
1395 private void generateFlatReturnNode(FlatMethod fm, FlatReturnNode frn, PrintWriter output) {
1397 if (frn.getReturnTemp()!=null)
1398 output.println("return "+generateTemp(fm, frn.getReturnTemp())+";");
1400 output.println("return;");
1403 private void generateFlatCondBranch(FlatMethod fm, FlatCondBranch fcb, String label, PrintWriter output) {
1404 output.println("if (!"+generateTemp(fm, fcb.getTest())+") goto "+label+";");
1407 private void generateHeader(FlatMethod fm, Descriptor des, PrintWriter output) {
1409 ParamsObject objectparams=(ParamsObject)paramstable.get(des);
1410 MethodDescriptor md=null;
1411 TaskDescriptor task=null;
1412 if (des instanceof MethodDescriptor)
1413 md=(MethodDescriptor) des;
1415 task=(TaskDescriptor) des;
1417 ClassDescriptor cn=md!=null?md.getClassDesc():null;
1419 if (md!=null&&md.getReturnType()!=null) {
1420 if (md.getReturnType().isClass()||md.getReturnType().isArray())
1421 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1423 output.print(md.getReturnType().getSafeSymbol()+" ");
1425 //catch the constructor case
1426 output.print("void ");
1428 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1430 output.print(task.getSafeSymbol()+"(");
1432 boolean printcomma=false;
1433 if (GENERATEPRECISEGC) {
1435 output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1437 output.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
1443 for(int i=0;i<objectparams.numPrimitives();i++) {
1444 TempDescriptor temp=objectparams.getPrimitive(i);
1448 if (temp.getType().isClass()||temp.getType().isArray())
1449 output.print("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
1451 output.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
1453 output.println(") {");
1454 } else if (!GENERATEPRECISEGC) {
1455 /* Imprecise Task */
1456 output.println("void * parameterarray[]) {");
1457 /* Unpack variables */
1458 for(int i=0;i<objectparams.numPrimitives();i++) {
1459 TempDescriptor temp=objectparams.getPrimitive(i);
1460 output.println("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+"=parameterarray["+i+"];");
1462 for(int i=0;i<fm.numTags();i++) {
1463 TempDescriptor temp=fm.getTag(i);
1464 int offset=i+objectparams.numPrimitives();
1465 output.println("struct ___TagDescriptor___ * "+temp.getSafeSymbol()+"=parameterarray["+offset+"];");
1468 if ((objectparams.numPrimitives()+fm.numTags())>maxtaskparams)
1469 maxtaskparams=objectparams.numPrimitives()+fm.numTags();
1470 } else output.println(") {");
1473 public void generateFlatFlagActionNode(FlatMethod fm, FlatFlagActionNode ffan, PrintWriter output) {
1474 output.println("/* FlatFlagActionNode */");
1477 /* Process tag changes */
1478 Relation tagsettable=new Relation();
1479 Relation tagcleartable=new Relation();
1481 Iterator tagsit=ffan.getTempTagPairs();
1482 while (tagsit.hasNext()) {
1483 TempTagPair ttp=(TempTagPair) tagsit.next();
1484 TempDescriptor objtmp=ttp.getTemp();
1485 TagDescriptor tag=ttp.getTag();
1486 TempDescriptor tagtmp=ttp.getTagTemp();
1487 boolean tagstatus=ffan.getTagChange(ttp);
1489 tagsettable.put(objtmp, tagtmp);
1491 tagcleartable.put(objtmp, tagtmp);
1496 Hashtable flagandtable=new Hashtable();
1497 Hashtable flagortable=new Hashtable();
1499 /* Process flag changes */
1500 Iterator flagsit=ffan.getTempFlagPairs();
1501 while(flagsit.hasNext()) {
1502 TempFlagPair tfp=(TempFlagPair)flagsit.next();
1503 TempDescriptor temp=tfp.getTemp();
1504 Hashtable flagtable=(Hashtable)flagorder.get(temp.getType().getClassDesc());
1505 FlagDescriptor flag=tfp.getFlag();
1507 //Newly allocate objects that don't set any flags case
1508 if (flagortable.containsKey(temp)) {
1512 flagortable.put(temp,new Integer(mask));
1514 int flagid=1<<((Integer)flagtable.get(flag)).intValue();
1515 boolean flagstatus=ffan.getFlagChange(tfp);
1518 if (flagortable.containsKey(temp)) {
1519 mask=((Integer)flagortable.get(temp)).intValue();
1522 flagortable.put(temp,new Integer(mask));
1524 int mask=0xFFFFFFFF;
1525 if (flagandtable.containsKey(temp)) {
1526 mask=((Integer)flagandtable.get(temp)).intValue();
1528 mask&=(0xFFFFFFFF^flagid);
1529 flagandtable.put(temp,new Integer(mask));
1535 HashSet flagtagset=new HashSet();
1536 flagtagset.addAll(flagortable.keySet());
1537 flagtagset.addAll(flagandtable.keySet());
1538 flagtagset.addAll(tagsettable.keySet());
1539 flagtagset.addAll(tagcleartable.keySet());
1541 Iterator ftit=flagtagset.iterator();
1542 while(ftit.hasNext()) {
1543 TempDescriptor temp=(TempDescriptor)ftit.next();
1546 Set tagtmps=tagcleartable.get(temp);
1547 if (tagtmps!=null) {
1548 Iterator tagit=tagtmps.iterator();
1549 while(tagit.hasNext()) {
1550 TempDescriptor tagtmp=(TempDescriptor)tagit.next();
1551 if (GENERATEPRECISEGC)
1552 output.println("tagclear(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
1554 output.println("tagclear((struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
1558 tagtmps=tagsettable.get(temp);
1559 if (tagtmps!=null) {
1560 Iterator tagit=tagtmps.iterator();
1561 while(tagit.hasNext()) {
1562 TempDescriptor tagtmp=(TempDescriptor)tagit.next();
1563 if (GENERATEPRECISEGC)
1564 output.println("tagset(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
1566 output.println("tagset((struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
1571 int andmask=0xFFFFFFF;
1573 if (flagortable.containsKey(temp))
1574 ormask=((Integer)flagortable.get(temp)).intValue();
1575 if (flagandtable.containsKey(temp))
1576 andmask=((Integer)flagandtable.get(temp)).intValue();
1577 if (ffan.getTaskType()==FlatFlagActionNode.NEWOBJECT) {
1578 output.println("flagorandinit("+generateTemp(fm, temp)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
1580 output.println("flagorand("+generateTemp(fm, temp)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");