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 ClassDescriptor cd=typeutil.getClass(state.main);
297 Set mainset=cd.getMethodTable().getSet("main");
298 for(Iterator mainit=mainset.iterator();mainit.hasNext();) {
299 MethodDescriptor md=(MethodDescriptor)mainit.next();
300 if (md.numParameters()!=1)
302 Descriptor pd=md.getParameter(0);
303 TypeDescriptor tpd=(pd instanceof TagVarDescriptor)?((TagVarDescriptor)pd).getType():((VarDescriptor)pd).getType();
304 if (tpd.getArrayCount()!=1)
306 if (!tpd.getSymbol().equals("String"))
309 if (!md.getModifiers().isStatic())
310 throw new Error("Error: Non static main");
311 outmethod.println(" {");
312 if (GENERATEPRECISEGC) {
313 outmethod.print(" struct "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
314 outmethod.println("1, NULL,"+"stringarray};");
315 outmethod.println(" "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(& __parameterlist__);");
317 outmethod.println(" "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(stringarray);");
318 outmethod.println(" }");
322 outmethod.println("pthread_mutex_lock(&gclistlock);");
323 outmethod.println("threadcount--;");
324 outmethod.println("pthread_cond_signal(&gccond);");
325 outmethod.println("pthread_mutex_unlock(&gclistlock);");
326 outmethod.println("pthread_exit(NULL);");
328 outmethod.println("}");
331 outstructs.println("#define MAXTASKPARAMS "+maxtaskparams);
334 /* Output structure definitions for repair tool */
335 if (state.structfile!=null) {
336 buildRepairStructs(outrepairstructs);
337 outrepairstructs.close();
339 outstructs.println("#endif");
345 private int maxcount=0;
347 private void buildRepairStructs(PrintWriter outrepairstructs) {
348 Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
349 while(classit.hasNext()) {
350 ClassDescriptor cn=(ClassDescriptor)classit.next();
351 outrepairstructs.println("structure "+cn.getSymbol()+" {");
352 outrepairstructs.println(" int __type__;");
354 outrepairstructs.println(" int __flag__;");
355 outrepairstructs.println(" int __flagptr__;");
357 printRepairStruct(cn, outrepairstructs);
358 outrepairstructs.println("}\n");
361 for(int i=0;i<state.numArrays();i++) {
362 TypeDescriptor tdarray=arraytable[i];
363 TypeDescriptor tdelement=tdarray.dereference();
364 outrepairstructs.println("structure "+arraytype+"_"+state.getArrayNumber(tdarray)+" {");
365 outrepairstructs.println(" int __type__;");
366 printRepairStruct(typeutil.getClass(TypeUtil.ObjectClass), outrepairstructs);
367 outrepairstructs.println(" int length;");
369 // Need to add support to repair tool for this
370 if (tdelement.isClass()||tdelement.isArray())
371 outrepairstructs.println(" "+tdelement.getRepairSymbol()+" * elem[this.length];");
373 outrepairstructs.println(" "+tdelement.getRepairSymbol()+" elem[this.length];");
375 outrepairstructs.println("}\n");
380 private void printRepairStruct(ClassDescriptor cn, PrintWriter output) {
381 ClassDescriptor sp=cn.getSuperDesc();
383 printRepairStruct(sp, output);
385 Vector fields=(Vector)fieldorder.get(cn);
387 for(int i=0;i<fields.size();i++) {
388 FieldDescriptor fd=(FieldDescriptor)fields.get(i);
389 if (fd.getType().isArray()) {
390 output.println(" "+arraytype+"_"+ state.getArrayNumber(fd.getType()) +" * "+fd.getSymbol()+";");
391 } else if (fd.getType().isClass())
392 output.println(" "+fd.getType().getRepairSymbol()+" * "+fd.getSymbol()+";");
393 else if (fd.getType().isFloat())
394 output.println(" int "+fd.getSymbol()+"; /* really float */");
396 output.println(" "+fd.getType().getRepairSymbol()+" "+fd.getSymbol()+";");
400 /** This method outputs TaskDescriptor information */
401 void generateTaskDescriptor(PrintWriter output, FlatMethod fm, TaskDescriptor task) {
402 for (int i=0;i<task.numParameters();i++) {
403 VarDescriptor param_var=task.getParameter(i);
404 TypeDescriptor param_type=task.getParamType(i);
405 FlagExpressionNode param_flag=task.getFlag(param_var);
406 TagExpressionList param_tag=task.getTag(param_var);
409 if (param_flag==null) {
410 output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
411 output.println("0x0, 0x0 };");
415 DNFFlag dflag=param_flag.getDNF();
416 dnfterms=dflag.size();
418 Hashtable flags=(Hashtable)flagorder.get(param_type.getClassDesc());
419 output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
420 for(int j=0;j<dflag.size();j++) {
423 Vector term=dflag.get(j);
426 for(int k=0;k<term.size();k++) {
427 DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
428 FlagDescriptor fd=dfa.getFlag();
429 boolean negated=dfa.getNegated();
430 int flagid=1<<((Integer)flags.get(fd)).intValue();
435 output.print("0x"+Integer.toHexString(andmask)+", 0x"+Integer.toHexString(checkmask));
437 output.println("};");
440 output.println("int parametertag_"+i+"_"+task.getSafeSymbol()+"[]={");
441 //BUG...added next line to fix, test with any task program
443 for(int j=0;j<param_tag.numTags();j++) {
446 /* for each tag we need */
447 /* which slot it is */
448 /* what type it is */
449 TagVarDescriptor tvd=(TagVarDescriptor)task.getParameterTable().get(param_tag.getName(j));
450 TempDescriptor tmp=param_tag.getTemp(j);
451 int slot=fm.getTagInt(tmp);
452 output.println(slot+", "+state.getTagId(tvd.getTag()));
454 output.println("};");
456 output.println("struct parameterdescriptor parameter_"+i+"_"+task.getSafeSymbol()+"={");
457 output.println("/* type */"+param_type.getClassDesc().getId()+",");
458 output.println("/* number of DNF terms */"+dnfterms+",");
459 output.println("parameterdnf_"+i+"_"+task.getSafeSymbol()+",");
460 output.println("0,");
461 //BUG, added next line to fix and else statement...test
462 //with any task program
464 output.println("/* number of tags */"+param_tag.numTags()+",");
466 output.println("/* number of tags */ 0,");
467 output.println("parametertag_"+i+"_"+task.getSafeSymbol());
468 output.println("};");
472 output.println("struct parameterdescriptor * parameterdescriptors_"+task.getSafeSymbol()+"[] = {");
473 for (int i=0;i<task.numParameters();i++) {
476 output.print("¶meter_"+i+"_"+task.getSafeSymbol());
478 output.println("};");
480 output.println("struct taskdescriptor task_"+task.getSafeSymbol()+"={");
481 output.println("&"+task.getSafeSymbol()+",");
482 output.println("/* number of parameters */" +task.numParameters() + ",");
483 int numtotal=task.numParameters()+fm.numTags();
484 output.println("/* number total parameters */" +numtotal + ",");
485 output.println("parameterdescriptors_"+task.getSafeSymbol()+",");
486 output.println("\""+task.getSymbol()+"\"");
487 output.println("};");
491 /** The buildVirtualTables method outputs the virtual dispatch
492 * tables for methods. */
494 private void buildVirtualTables(PrintWriter outvirtual) {
495 Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
496 while(classit.hasNext()) {
497 ClassDescriptor cd=(ClassDescriptor)classit.next();
498 if (virtualcalls.getMethodCount(cd)>maxcount)
499 maxcount=virtualcalls.getMethodCount(cd);
501 MethodDescriptor[][] virtualtable=new MethodDescriptor[state.numClasses()+state.numArrays()][maxcount];
503 /* Fill in virtual table */
504 classit=state.getClassSymbolTable().getDescriptorsIterator();
505 while(classit.hasNext()) {
506 ClassDescriptor cd=(ClassDescriptor)classit.next();
507 fillinRow(cd, virtualtable, cd.getId());
510 ClassDescriptor objectcd=typeutil.getClass(TypeUtil.ObjectClass);
511 Iterator arrayit=state.getArrayIterator();
512 while(arrayit.hasNext()) {
513 TypeDescriptor td=(TypeDescriptor)arrayit.next();
514 int id=state.getArrayNumber(td);
515 fillinRow(objectcd, virtualtable, id+state.numClasses());
518 outvirtual.print("void * virtualtable[]={");
519 boolean needcomma=false;
520 for(int i=0;i<state.numClasses()+state.numArrays();i++) {
521 for(int j=0;j<maxcount;j++) {
523 outvirtual.print(", ");
524 if (virtualtable[i][j]!=null) {
525 MethodDescriptor md=virtualtable[i][j];
526 outvirtual.print("& "+md.getClassDesc().getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
528 outvirtual.print("0");
532 outvirtual.println("");
534 outvirtual.println("};");
538 private void fillinRow(ClassDescriptor cd, MethodDescriptor[][] virtualtable, int rownum) {
539 /* Get inherited methods */
540 if (cd.getSuperDesc()!=null)
541 fillinRow(cd.getSuperDesc(), virtualtable, rownum);
542 /* Override them with our methods */
543 for(Iterator it=cd.getMethods();it.hasNext();) {
544 MethodDescriptor md=(MethodDescriptor)it.next();
545 if (md.isStatic()||md.getReturnType()==null)
547 int methodnum=virtualcalls.getMethodNumber(md);
548 virtualtable[rownum][methodnum]=md;
552 /** Generate array that contains the sizes of class objects. The
553 * object allocation functions in the runtime use this
556 private void generateSizeArray(PrintWriter outclassdefs) {
557 outclassdefs.print("int classsize[]={");
558 Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
559 cdarray=new ClassDescriptor[state.numClasses()];
560 while(it.hasNext()) {
561 ClassDescriptor cd=(ClassDescriptor)it.next();
562 cdarray[cd.getId()]=cd;
564 boolean needcomma=false;
565 for(int i=0;i<state.numClasses();i++) {
567 outclassdefs.print(", ");
568 outclassdefs.print("sizeof(struct "+cdarray[i].getSafeSymbol()+")");
572 arraytable=new TypeDescriptor[state.numArrays()];
574 Iterator arrayit=state.getArrayIterator();
575 while(arrayit.hasNext()) {
576 TypeDescriptor td=(TypeDescriptor)arrayit.next();
577 int id=state.getArrayNumber(td);
581 for(int i=0;i<state.numArrays();i++) {
583 outclassdefs.print(", ");
584 TypeDescriptor tdelement=arraytable[i].dereference();
585 if (tdelement.isArray()||tdelement.isClass())
586 outclassdefs.print("sizeof(void *)");
588 outclassdefs.print("sizeof("+tdelement.getSafeSymbol()+")");
592 outclassdefs.println("};");
595 /** Constructs params and temp objects for each method or task.
596 * These objects tell the compiler which temps need to be
599 private void generateTempStructs(FlatMethod fm) {
600 MethodDescriptor md=fm.getMethod();
601 TaskDescriptor task=fm.getTask();
603 ParamsObject objectparams=md!=null?new ParamsObject(md,tag++):new ParamsObject(task, tag++);
605 paramstable.put(md, objectparams);
607 paramstable.put(task, objectparams);
609 for(int i=0;i<fm.numParameters();i++) {
610 TempDescriptor temp=fm.getParameter(i);
611 TypeDescriptor type=temp.getType();
612 if ((type.isPtr()||type.isArray())&&GENERATEPRECISEGC)
613 objectparams.addPtr(temp);
615 objectparams.addPrim(temp);
618 TempObject objecttemps=md!=null?new TempObject(objectparams,md,tag++):new TempObject(objectparams, task, tag++);
620 tempstable.put(md, objecttemps);
622 tempstable.put(task, objecttemps);
624 for(Iterator nodeit=fm.getNodeSet().iterator();nodeit.hasNext();) {
625 FlatNode fn=(FlatNode)nodeit.next();
626 TempDescriptor[] writes=fn.writesTemps();
627 for(int i=0;i<writes.length;i++) {
628 TempDescriptor temp=writes[i];
629 TypeDescriptor type=temp.getType();
630 if ((type.isPtr()||type.isArray())&&GENERATEPRECISEGC)
631 objecttemps.addPtr(temp);
633 objecttemps.addPrim(temp);
638 private void generateLayoutStructs(PrintWriter output) {
639 Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
640 while(it.hasNext()) {
641 ClassDescriptor cn=(ClassDescriptor)it.next();
642 output.println("int "+cn.getSafeSymbol()+"_pointers[]={");
643 Iterator allit=cn.getFieldTable().getAllDescriptorsIterator();
645 while(allit.hasNext()) {
646 FieldDescriptor fd=(FieldDescriptor)allit.next();
647 TypeDescriptor type=fd.getType();
648 if (type.isPtr()||type.isArray())
652 allit=cn.getFieldTable().getAllDescriptorsIterator();
653 while(allit.hasNext()) {
654 FieldDescriptor fd=(FieldDescriptor)allit.next();
655 TypeDescriptor type=fd.getType();
656 if (type.isPtr()||type.isArray()) {
658 output.print("((int)&(((struct "+cn.getSafeSymbol() +" *)0)->"+fd.getSafeSymbol()+"))");
661 output.println("};");
663 output.println("int * pointerarray[]={");
664 boolean needcomma=false;
665 for(int i=0;i<state.numClasses();i++) {
666 ClassDescriptor cn=cdarray[i];
670 output.print(cn.getSafeSymbol()+"_pointers");
673 for(int i=0;i<state.numArrays();i++) {
675 output.println(", ");
676 TypeDescriptor tdelement=arraytable[i].dereference();
677 if (tdelement.isArray()||tdelement.isClass())
678 output.print("((int *)1)");
684 output.println("};");
686 output.println("int hasflags[]={");
687 for(int i=0;i<state.numClasses();i++) {
688 ClassDescriptor cn=cdarray[i];
690 output.println(", ");
697 output.println("};");
700 /** Print out table to give us supertypes */
701 private void generateSuperTypeTable(PrintWriter output) {
702 output.println("int supertypes[]={");
703 boolean needcomma=false;
704 for(int i=0;i<state.numClasses();i++) {
705 ClassDescriptor cn=cdarray[i];
709 if (cn.getSuperDesc()!=null) {
710 ClassDescriptor cdsuper=cn.getSuperDesc();
711 output.print(cdsuper.getId());
715 output.println("};");
718 /** Force consistent field ordering between inherited classes. */
720 private void printClassStruct(ClassDescriptor cn, PrintWriter classdefout) {
721 ClassDescriptor sp=cn.getSuperDesc();
723 printClassStruct(sp, classdefout);
725 if (!fieldorder.containsKey(cn)) {
726 Vector fields=new Vector();
727 fieldorder.put(cn,fields);
728 Iterator fieldit=cn.getFields();
729 while(fieldit.hasNext()) {
730 FieldDescriptor fd=(FieldDescriptor)fieldit.next();
731 if (sp==null||!sp.getFieldTable().contains(fd.getSymbol()))
735 Vector fields=(Vector)fieldorder.get(cn);
737 for(int i=0;i<fields.size();i++) {
738 FieldDescriptor fd=(FieldDescriptor)fields.get(i);
739 if (fd.getType().isClass()||fd.getType().isArray())
740 classdefout.println(" struct "+fd.getType().getSafeSymbol()+" * "+fd.getSafeSymbol()+";");
742 classdefout.println(" "+fd.getType().getSafeSymbol()+" "+fd.getSafeSymbol()+";");
747 /* Map flags to integers consistently between inherited
750 private void mapFlags(ClassDescriptor cn) {
751 ClassDescriptor sp=cn.getSuperDesc();
755 if (!flagorder.containsKey(cn)) {
756 Hashtable flags=new Hashtable();
757 flagorder.put(cn,flags);
759 Hashtable superflags=(Hashtable)flagorder.get(sp);
760 Iterator superflagit=superflags.keySet().iterator();
761 while(superflagit.hasNext()) {
762 FlagDescriptor fd=(FlagDescriptor)superflagit.next();
763 Integer number=(Integer)superflags.get(fd);
764 flags.put(fd, number);
765 if ((number.intValue()+1)>max)
766 max=number.intValue()+1;
770 Iterator flagit=cn.getFlags();
771 while(flagit.hasNext()) {
772 FlagDescriptor fd=(FlagDescriptor)flagit.next();
773 if (sp==null||!sp.getFlagTable().contains(fd.getSymbol()))
774 flags.put(fd, new Integer(max++));
780 /** This function outputs (1) structures that parameters are
781 * passed in (when PRECISE GC is enabled) and (2) function
782 * prototypes for the methods */
784 private void generateCallStructs(ClassDescriptor cn, PrintWriter classdefout, PrintWriter output, PrintWriter headersout) {
785 /* Output class structure */
786 classdefout.println("struct "+cn.getSafeSymbol()+" {");
787 classdefout.println(" int type;");
789 classdefout.println(" pthread_t tid;");
790 classdefout.println(" void * lockentry;");
791 classdefout.println(" int lockcount;");
795 classdefout.println(" int flag;");
796 classdefout.println(" void * flagptr;");
798 printClassStruct(cn, classdefout);
799 classdefout.println("};\n");
801 /* Cycle through methods */
802 Iterator methodit=cn.getMethods();
803 while(methodit.hasNext()) {
804 /* Classify parameters */
805 MethodDescriptor md=(MethodDescriptor)methodit.next();
806 FlatMethod fm=state.getMethodFlat(md);
807 generateTempStructs(fm);
809 ParamsObject objectparams=(ParamsObject) paramstable.get(md);
810 TempObject objecttemps=(TempObject) tempstable.get(md);
812 /* Output parameter structure */
813 if (GENERATEPRECISEGC) {
814 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params {");
815 output.println(" int size;");
816 output.println(" void * next;");
817 for(int i=0;i<objectparams.numPointers();i++) {
818 TempDescriptor temp=objectparams.getPointer(i);
819 output.println(" struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
821 output.println("};\n");
824 /* Output temp structure */
825 if (GENERATEPRECISEGC) {
826 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals {");
827 output.println(" int size;");
828 output.println(" void * next;");
829 for(int i=0;i<objecttemps.numPointers();i++) {
830 TempDescriptor temp=objecttemps.getPointer(i);
831 if (temp.getType().isNull())
832 output.println(" void * "+temp.getSafeSymbol()+";");
834 output.println(" struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
836 output.println("};\n");
839 /* Output method declaration */
840 if (md.getReturnType()!=null) {
841 if (md.getReturnType().isClass()||md.getReturnType().isArray())
842 headersout.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
844 headersout.print(md.getReturnType().getSafeSymbol()+" ");
846 //catch the constructor case
847 headersout.print("void ");
848 headersout.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
850 boolean printcomma=false;
851 if (GENERATEPRECISEGC) {
852 headersout.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
856 //output parameter list
857 for(int i=0;i<objectparams.numPrimitives();i++) {
858 TempDescriptor temp=objectparams.getPrimitive(i);
860 headersout.print(", ");
862 if (temp.getType().isClass()||temp.getType().isArray())
863 headersout.print("struct " + temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
865 headersout.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
867 headersout.println(");\n");
872 /** This function outputs (1) structures that parameters are
873 * passed in (when PRECISE GC is enabled) and (2) function
874 * prototypes for the tasks */
876 private void generateTaskStructs(PrintWriter output, PrintWriter headersout) {
877 /* Cycle through tasks */
878 Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
880 while(taskit.hasNext()) {
881 /* Classify parameters */
882 TaskDescriptor task=(TaskDescriptor)taskit.next();
883 FlatMethod fm=state.getMethodFlat(task);
884 generateTempStructs(fm);
886 ParamsObject objectparams=(ParamsObject) paramstable.get(task);
887 TempObject objecttemps=(TempObject) tempstable.get(task);
889 /* Output parameter structure */
890 if (GENERATEPRECISEGC) {
891 output.println("struct "+task.getSafeSymbol()+"_params {");
893 output.println(" int size;");
894 output.println(" void * next;");
895 for(int i=0;i<objectparams.numPointers();i++) {
896 TempDescriptor temp=objectparams.getPointer(i);
897 output.println(" struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
899 for(int i=0;i<fm.numTags();i++) {
900 TempDescriptor temp=fm.getTag(i);
901 output.println(" struct ___TagDescriptor___ * "+temp.getSafeSymbol()+";");
904 output.println("};\n");
905 if ((objectparams.numPointers()+fm.numTags())>maxtaskparams) {
906 maxtaskparams=objectparams.numPointers()+fm.numTags();
910 /* Output temp structure */
911 if (GENERATEPRECISEGC) {
912 output.println("struct "+task.getSafeSymbol()+"_locals {");
913 output.println(" int size;");
914 output.println(" void * next;");
915 for(int i=0;i<objecttemps.numPointers();i++) {
916 TempDescriptor temp=objecttemps.getPointer(i);
917 if (temp.getType().isNull())
918 output.println(" void * "+temp.getSafeSymbol()+";");
919 else if(temp.getType().isTag())
920 output.println(" struct "+
921 (new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
923 output.println(" struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
925 output.println("};\n");
928 /* Output task declaration */
929 headersout.print("void " + task.getSafeSymbol()+"(");
931 boolean printcomma=false;
932 if (GENERATEPRECISEGC) {
933 headersout.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
935 headersout.print("void * parameterarray[]");
936 headersout.println(");\n");
940 /** Generate code for flatmethod fm. */
942 private void generateFlatMethod(FlatMethod fm, PrintWriter output) {
943 MethodDescriptor md=fm.getMethod();
944 TaskDescriptor task=fm.getTask();
946 ClassDescriptor cn=md!=null?md.getClassDesc():null;
948 ParamsObject objectparams=(ParamsObject)paramstable.get(md!=null?md:task);
950 generateHeader(fm, md!=null?md:task,output);
952 TempObject objecttemp=(TempObject) tempstable.get(md!=null?md:task);
955 if (GENERATEPRECISEGC) {
957 output.print(" struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
959 output.print(" struct "+task.getSafeSymbol()+"_locals "+localsprefix+"={");
961 output.print(objecttemp.numPointers()+",");
962 output.print(paramsprefix);
963 for(int j=0;j<objecttemp.numPointers();j++)
964 output.print(", NULL");
965 output.println("};");
968 for(int i=0;i<objecttemp.numPrimitives();i++) {
969 TempDescriptor td=objecttemp.getPrimitive(i);
970 TypeDescriptor type=td.getType();
972 output.println(" void * "+td.getSafeSymbol()+";");
973 else if (type.isClass()||type.isArray())
974 output.println(" struct "+type.getSafeSymbol()+" * "+td.getSafeSymbol()+";");
976 output.println(" "+type.getSafeSymbol()+" "+td.getSafeSymbol()+";");
979 /* Generate labels first */
980 HashSet tovisit=new HashSet();
981 HashSet visited=new HashSet();
983 Hashtable nodetolabel=new Hashtable();
984 tovisit.add(fm.getNext(0));
985 FlatNode current_node=null;
988 //Node needs a label if it is
989 while(!tovisit.isEmpty()) {
990 FlatNode fn=(FlatNode)tovisit.iterator().next();
993 for(int i=0;i<fn.numNext();i++) {
994 FlatNode nn=fn.getNext(i);
997 nodetolabel.put(nn,new Integer(labelindex++));
999 if (!visited.contains(nn)&&!tovisit.contains(nn)) {
1003 nodetolabel.put(nn,new Integer(labelindex++));
1008 if (state.THREAD&&GENERATEPRECISEGC) {
1009 output.println("checkcollect(&"+localsprefix+");");
1012 //Do the actual code generation
1013 tovisit=new HashSet();
1014 visited=new HashSet();
1015 tovisit.add(fm.getNext(0));
1016 while(current_node!=null||!tovisit.isEmpty()) {
1017 if (current_node==null) {
1018 current_node=(FlatNode)tovisit.iterator().next();
1019 tovisit.remove(current_node);
1021 visited.add(current_node);
1022 if (nodetolabel.containsKey(current_node))
1023 output.println("L"+nodetolabel.get(current_node)+":");
1024 if (state.INSTRUCTIONFAILURE) {
1026 output.println("if ((++instructioncount)>failurecount) {instructioncount=0;injectinstructionfailure();}");
1029 output.println("if ((--instructioncount)==0) injectinstructionfailure();");
1031 if (current_node.numNext()==0) {
1033 generateFlatNode(fm, current_node, output);
1034 if (current_node.kind()!=FKind.FlatReturnNode) {
1035 output.println(" return;");
1038 } else if(current_node.numNext()==1) {
1040 generateFlatNode(fm, current_node, output);
1041 FlatNode nextnode=current_node.getNext(0);
1042 if (visited.contains(nextnode)) {
1043 output.println("goto L"+nodetolabel.get(nextnode)+";");
1046 current_node=nextnode;
1047 } else if (current_node.numNext()==2) {
1050 generateFlatCondBranch(fm, (FlatCondBranch)current_node, "L"+nodetolabel.get(current_node.getNext(1)), output);
1051 if (!visited.contains(current_node.getNext(1)))
1052 tovisit.add(current_node.getNext(1));
1053 if (visited.contains(current_node.getNext(0))) {
1054 output.println("goto L"+nodetolabel.get(current_node.getNext(0))+";");
1057 current_node=current_node.getNext(0);
1058 } else throw new Error();
1062 output.println("}\n\n");
1065 /** Generate text string that corresponds to the Temp td. */
1066 private String generateTemp(FlatMethod fm, TempDescriptor td) {
1067 MethodDescriptor md=fm.getMethod();
1068 TaskDescriptor task=fm.getTask();
1069 TempObject objecttemps=(TempObject) tempstable.get(md!=null?md:task);
1071 if (objecttemps.isLocalPrim(td)||objecttemps.isParamPrim(td)) {
1072 return td.getSafeSymbol();
1075 if (objecttemps.isLocalPtr(td)) {
1076 return localsprefix+"."+td.getSafeSymbol();
1079 if (objecttemps.isParamPtr(td)) {
1080 return paramsprefix+"->"+td.getSafeSymbol();
1085 private void generateFlatNode(FlatMethod fm, FlatNode fn, PrintWriter output) {
1087 case FKind.FlatTagDeclaration:
1088 generateFlatTagDeclaration(fm, (FlatTagDeclaration) fn,output);
1090 case FKind.FlatCall:
1091 generateFlatCall(fm, (FlatCall) fn,output);
1093 case FKind.FlatFieldNode:
1094 generateFlatFieldNode(fm, (FlatFieldNode) fn,output);
1096 case FKind.FlatElementNode:
1097 generateFlatElementNode(fm, (FlatElementNode) fn,output);
1099 case FKind.FlatSetElementNode:
1100 generateFlatSetElementNode(fm, (FlatSetElementNode) fn,output);
1102 case FKind.FlatSetFieldNode:
1103 generateFlatSetFieldNode(fm, (FlatSetFieldNode) fn,output);
1106 generateFlatNew(fm, (FlatNew) fn,output);
1108 case FKind.FlatOpNode:
1109 generateFlatOpNode(fm, (FlatOpNode) fn,output);
1111 case FKind.FlatCastNode:
1112 generateFlatCastNode(fm, (FlatCastNode) fn,output);
1114 case FKind.FlatLiteralNode:
1115 generateFlatLiteralNode(fm, (FlatLiteralNode) fn,output);
1117 case FKind.FlatReturnNode:
1118 generateFlatReturnNode(fm, (FlatReturnNode) fn,output);
1121 output.println("/* nop */");
1123 case FKind.FlatBackEdge:
1124 if (state.THREAD&&GENERATEPRECISEGC) {
1125 output.println("checkcollect(&"+localsprefix+");");
1127 output.println("/* nop */");
1129 case FKind.FlatCheckNode:
1130 generateFlatCheckNode(fm, (FlatCheckNode) fn, output);
1132 case FKind.FlatFlagActionNode:
1133 generateFlatFlagActionNode(fm, (FlatFlagActionNode) fn, output);
1140 private void generateFlatCheckNode(FlatMethod fm, FlatCheckNode fcn, PrintWriter output) {
1142 if (state.CONSCHECK) {
1143 String specname=fcn.getSpec();
1144 String varname="repairstate___";
1145 output.println("{");
1146 output.println("struct "+specname+"_state * "+varname+"=allocate"+specname+"_state();");
1148 TempDescriptor[] temps=fcn.getTemps();
1149 String[] vars=fcn.getVars();
1150 for(int i=0;i<temps.length;i++) {
1151 output.println(varname+"->"+vars[i]+"=(int)"+generateTemp(fm, temps[i])+";");
1154 output.println("if (doanalysis"+specname+"("+varname+")) {");
1155 output.println("free"+specname+"_state("+varname+");");
1156 output.println("} else {");
1157 output.println("/* Bad invariant */");
1158 output.println("free"+specname+"_state("+varname+");");
1159 output.println("abort_task();");
1160 output.println("}");
1162 output.println("}");
1166 private void generateFlatCall(FlatMethod fm, FlatCall fc, PrintWriter output) {
1167 MethodDescriptor md=fc.getMethod();
1168 ParamsObject objectparams=(ParamsObject) paramstable.get(md);
1169 ClassDescriptor cn=md.getClassDesc();
1170 output.println("{");
1171 if (GENERATEPRECISEGC) {
1172 output.print(" struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
1174 output.print(objectparams.numPointers());
1175 // output.print(objectparams.getUID());
1176 output.print(", & "+localsprefix);
1177 if (fc.getThis()!=null) {
1179 output.print("(struct "+md.getThis().getType().getSafeSymbol() +" *)"+ generateTemp(fm,fc.getThis()));
1181 for(int i=0;i<fc.numArgs();i++) {
1182 Descriptor var=md.getParameter(i);
1183 TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1184 if (objectparams.isParamPtr(paramtemp)) {
1185 TempDescriptor targ=fc.getArg(i);
1187 TypeDescriptor td=md.getParamType(i);
1189 output.print("(struct "+(new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol() +" *)"+generateTemp(fm, targ));
1191 output.print("(struct "+md.getParamType(i).getSafeSymbol() +" *)"+generateTemp(fm, targ));
1194 output.println("};");
1199 if (fc.getReturnTemp()!=null)
1200 output.print(generateTemp(fm,fc.getReturnTemp())+"=");
1202 /* Do we need to do virtual dispatch? */
1203 if (md.isStatic()||md.getReturnType()==null||singleCall(fc.getThis().getType().getClassDesc(),md)) {
1204 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
1208 if (md.getReturnType().isClass()||md.getReturnType().isArray())
1209 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1211 output.print(md.getReturnType().getSafeSymbol()+" ");
1212 output.print("(*)(");
1214 boolean printcomma=false;
1215 if (GENERATEPRECISEGC) {
1216 output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * ");
1221 for(int i=0;i<objectparams.numPrimitives();i++) {
1222 TempDescriptor temp=objectparams.getPrimitive(i);
1226 if (temp.getType().isClass()||temp.getType().isArray())
1227 output.print("struct " + temp.getType().getSafeSymbol()+" * ");
1229 output.print(temp.getType().getSafeSymbol());
1232 output.print("))virtualtable["+generateTemp(fm,fc.getThis())+"->type*"+maxcount+"+"+virtualcalls.getMethodNumber(md)+"])");
1236 boolean needcomma=false;
1237 if (GENERATEPRECISEGC) {
1238 output.print("&__parameterlist__");
1241 if (fc.getThis()!=null) {
1242 TypeDescriptor ptd=md.getThis().getType();
1243 if (ptd.isClass()&&!ptd.isArray())
1244 output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1245 output.print(generateTemp(fm,fc.getThis()));
1249 for(int i=0;i<fc.numArgs();i++) {
1250 Descriptor var=md.getParameter(i);
1251 TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1252 if (objectparams.isParamPrim(paramtemp)) {
1253 TempDescriptor targ=fc.getArg(i);
1257 TypeDescriptor ptd=md.getParamType(i);
1258 if (ptd.isClass()&&!ptd.isArray())
1259 output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1260 output.print(generateTemp(fm, targ));
1264 output.println(");");
1265 output.println(" }");
1268 private boolean singleCall(ClassDescriptor thiscd, MethodDescriptor md) {
1269 Set subclasses=typeutil.getSubClasses(thiscd);
1270 if (subclasses==null)
1272 for(Iterator classit=subclasses.iterator();classit.hasNext();) {
1273 ClassDescriptor cd=(ClassDescriptor)classit.next();
1274 Set possiblematches=cd.getMethodTable().getSet(md.getSymbol());
1275 for(Iterator matchit=possiblematches.iterator();matchit.hasNext();) {
1276 MethodDescriptor matchmd=(MethodDescriptor)matchit.next();
1277 if (md.matches(matchmd))
1284 private void generateFlatFieldNode(FlatMethod fm, FlatFieldNode ffn, PrintWriter output) {
1285 output.println(generateTemp(fm, ffn.getDst())+"="+ generateTemp(fm,ffn.getSrc())+"->"+ ffn.getField().getSafeSymbol()+";");
1288 private void generateFlatSetFieldNode(FlatMethod fm, FlatSetFieldNode fsfn, PrintWriter output) {
1289 if (fsfn.getField().getSymbol().equals("length")&&fsfn.getDst().getType().isArray())
1290 throw new Error("Can't set array length");
1291 output.println(generateTemp(fm, fsfn.getDst())+"->"+ fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc())+";");
1294 private void generateFlatElementNode(FlatMethod fm, FlatElementNode fen, PrintWriter output) {
1295 TypeDescriptor elementtype=fen.getSrc().getType().dereference();
1298 if (elementtype.isArray()||elementtype.isClass())
1301 type=elementtype.getSafeSymbol()+" ";
1303 if (fen.needsBoundsCheck()) {
1304 output.println("if ("+generateTemp(fm, fen.getIndex())+"< 0 || "+generateTemp(fm, fen.getIndex())+" >= "+generateTemp(fm,fen.getSrc()) + "->___length___)");
1305 output.println("failedboundschk();");
1308 output.println(generateTemp(fm, fen.getDst())+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc())+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex())+"];");
1311 private void generateFlatSetElementNode(FlatMethod fm, FlatSetElementNode fsen, PrintWriter output) {
1312 //TODO: need dynamic check to make sure this assignment is actually legal
1313 //Because Object[] could actually be something more specific...ie. Integer[]
1315 TypeDescriptor elementtype=fsen.getDst().getType().dereference();
1318 if (elementtype.isArray()||elementtype.isClass())
1321 type=elementtype.getSafeSymbol()+" ";
1323 if (fsen.needsBoundsCheck()) {
1324 output.println("if ("+generateTemp(fm, fsen.getIndex())+"< 0 || "+generateTemp(fm, fsen.getIndex())+" >= "+generateTemp(fm,fsen.getDst()) + "->___length___)");
1325 output.println("failedboundschk();");
1328 output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst())+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex())+"]="+generateTemp(fm,fsen.getSrc())+";");
1331 private void generateFlatNew(FlatMethod fm, FlatNew fn, PrintWriter output) {
1332 if (fn.getType().isArray()) {
1333 int arrayid=state.getArrayNumber(fn.getType())+state.numClasses();
1334 if (GENERATEPRECISEGC) {
1335 output.println(generateTemp(fm,fn.getDst())+"=allocate_newarray(&"+localsprefix+", "+arrayid+", "+generateTemp(fm, fn.getSize())+");");
1337 output.println(generateTemp(fm,fn.getDst())+"=allocate_newarray("+arrayid+", "+generateTemp(fm, fn.getSize())+");");
1340 if (GENERATEPRECISEGC) {
1341 output.println(generateTemp(fm,fn.getDst())+"=allocate_new(&"+localsprefix+", "+fn.getType().getClassDesc().getId()+");");
1343 output.println(generateTemp(fm,fn.getDst())+"=allocate_new("+fn.getType().getClassDesc().getId()+");");
1349 private void generateFlatTagDeclaration(FlatMethod fm, FlatTagDeclaration fn, PrintWriter output) {
1350 if (GENERATEPRECISEGC) {
1351 output.println(generateTemp(fm,fn.getDst())+"=allocate_tag(&"+localsprefix+", "+state.getTagId(fn.getType())+");");
1353 output.println(generateTemp(fm,fn.getDst())+"=allocate_tag("+state.getTagId(fn.getType())+");");
1357 private void generateFlatOpNode(FlatMethod fm, FlatOpNode fon, PrintWriter output) {
1359 if (fon.getRight()!=null)
1360 output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+fon.getOp().toString()+generateTemp(fm,fon.getRight())+";");
1361 else if (fon.getOp().getOp()==Operation.ASSIGN)
1362 output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+";");
1363 else if (fon.getOp().getOp()==Operation.UNARYPLUS)
1364 output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+";");
1365 else if (fon.getOp().getOp()==Operation.UNARYMINUS)
1366 output.println(generateTemp(fm, fon.getDest())+" = -"+generateTemp(fm, fon.getLeft())+";");
1367 else if (fon.getOp().getOp()==Operation.LOGIC_NOT)
1368 output.println(generateTemp(fm, fon.getDest())+" = !"+generateTemp(fm, fon.getLeft())+";");
1370 output.println(generateTemp(fm, fon.getDest())+fon.getOp().toString()+generateTemp(fm, fon.getLeft())+";");
1373 private void generateFlatCastNode(FlatMethod fm, FlatCastNode fcn, PrintWriter output) {
1374 /* TODO: Do type check here */
1375 if (fcn.getType().isArray()) {
1377 } else if (fcn.getType().isClass())
1378 output.println(generateTemp(fm,fcn.getDst())+"=(struct "+fcn.getType().getSafeSymbol()+" *)"+generateTemp(fm,fcn.getSrc())+";");
1380 output.println(generateTemp(fm,fcn.getDst())+"=("+fcn.getType().getSafeSymbol()+")"+generateTemp(fm,fcn.getSrc())+";");
1383 private void generateFlatLiteralNode(FlatMethod fm, FlatLiteralNode fln, PrintWriter output) {
1384 if (fln.getValue()==null)
1385 output.println(generateTemp(fm, fln.getDst())+"=0;");
1386 else if (fln.getType().getSymbol().equals(TypeUtil.StringClass)) {
1387 if (GENERATEPRECISEGC) {
1388 output.println(generateTemp(fm, fln.getDst())+"=NewString(&"+localsprefix+", \""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
1390 output.println(generateTemp(fm, fln.getDst())+"=NewString(\""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
1392 } else if (fln.getType().isBoolean()) {
1393 if (((Boolean)fln.getValue()).booleanValue())
1394 output.println(generateTemp(fm, fln.getDst())+"=1;");
1396 output.println(generateTemp(fm, fln.getDst())+"=0;");
1397 } else if (fln.getType().isChar()) {
1398 String st=FlatLiteralNode.escapeString(fln.getValue().toString());
1399 output.println(generateTemp(fm, fln.getDst())+"='"+st+"';");
1401 output.println(generateTemp(fm, fln.getDst())+"="+fln.getValue()+";");
1404 private void generateFlatReturnNode(FlatMethod fm, FlatReturnNode frn, PrintWriter output) {
1406 if (frn.getReturnTemp()!=null)
1407 output.println("return "+generateTemp(fm, frn.getReturnTemp())+";");
1409 output.println("return;");
1412 private void generateFlatCondBranch(FlatMethod fm, FlatCondBranch fcb, String label, PrintWriter output) {
1413 output.println("if (!"+generateTemp(fm, fcb.getTest())+") goto "+label+";");
1416 private void generateHeader(FlatMethod fm, Descriptor des, PrintWriter output) {
1418 ParamsObject objectparams=(ParamsObject)paramstable.get(des);
1419 MethodDescriptor md=null;
1420 TaskDescriptor task=null;
1421 if (des instanceof MethodDescriptor)
1422 md=(MethodDescriptor) des;
1424 task=(TaskDescriptor) des;
1426 ClassDescriptor cn=md!=null?md.getClassDesc():null;
1428 if (md!=null&&md.getReturnType()!=null) {
1429 if (md.getReturnType().isClass()||md.getReturnType().isArray())
1430 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1432 output.print(md.getReturnType().getSafeSymbol()+" ");
1434 //catch the constructor case
1435 output.print("void ");
1437 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1439 output.print(task.getSafeSymbol()+"(");
1441 boolean printcomma=false;
1442 if (GENERATEPRECISEGC) {
1444 output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1446 output.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
1452 for(int i=0;i<objectparams.numPrimitives();i++) {
1453 TempDescriptor temp=objectparams.getPrimitive(i);
1457 if (temp.getType().isClass()||temp.getType().isArray())
1458 output.print("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
1460 output.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
1462 output.println(") {");
1463 } else if (!GENERATEPRECISEGC) {
1464 /* Imprecise Task */
1465 output.println("void * parameterarray[]) {");
1466 /* Unpack variables */
1467 for(int i=0;i<objectparams.numPrimitives();i++) {
1468 TempDescriptor temp=objectparams.getPrimitive(i);
1469 output.println("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+"=parameterarray["+i+"];");
1471 for(int i=0;i<fm.numTags();i++) {
1472 TempDescriptor temp=fm.getTag(i);
1473 int offset=i+objectparams.numPrimitives();
1474 output.println("struct ___TagDescriptor___ * "+temp.getSafeSymbol()+"=parameterarray["+offset+"];");
1477 if ((objectparams.numPrimitives()+fm.numTags())>maxtaskparams)
1478 maxtaskparams=objectparams.numPrimitives()+fm.numTags();
1479 } else output.println(") {");
1482 public void generateFlatFlagActionNode(FlatMethod fm, FlatFlagActionNode ffan, PrintWriter output) {
1483 output.println("/* FlatFlagActionNode */");
1486 /* Process tag changes */
1487 Relation tagsettable=new Relation();
1488 Relation tagcleartable=new Relation();
1490 Iterator tagsit=ffan.getTempTagPairs();
1491 while (tagsit.hasNext()) {
1492 TempTagPair ttp=(TempTagPair) tagsit.next();
1493 TempDescriptor objtmp=ttp.getTemp();
1494 TagDescriptor tag=ttp.getTag();
1495 TempDescriptor tagtmp=ttp.getTagTemp();
1496 boolean tagstatus=ffan.getTagChange(ttp);
1498 tagsettable.put(objtmp, tagtmp);
1500 tagcleartable.put(objtmp, tagtmp);
1505 Hashtable flagandtable=new Hashtable();
1506 Hashtable flagortable=new Hashtable();
1508 /* Process flag changes */
1509 Iterator flagsit=ffan.getTempFlagPairs();
1510 while(flagsit.hasNext()) {
1511 TempFlagPair tfp=(TempFlagPair)flagsit.next();
1512 TempDescriptor temp=tfp.getTemp();
1513 Hashtable flagtable=(Hashtable)flagorder.get(temp.getType().getClassDesc());
1514 FlagDescriptor flag=tfp.getFlag();
1516 //Newly allocate objects that don't set any flags case
1517 if (flagortable.containsKey(temp)) {
1521 flagortable.put(temp,new Integer(mask));
1523 int flagid=1<<((Integer)flagtable.get(flag)).intValue();
1524 boolean flagstatus=ffan.getFlagChange(tfp);
1527 if (flagortable.containsKey(temp)) {
1528 mask=((Integer)flagortable.get(temp)).intValue();
1531 flagortable.put(temp,new Integer(mask));
1533 int mask=0xFFFFFFFF;
1534 if (flagandtable.containsKey(temp)) {
1535 mask=((Integer)flagandtable.get(temp)).intValue();
1537 mask&=(0xFFFFFFFF^flagid);
1538 flagandtable.put(temp,new Integer(mask));
1544 HashSet flagtagset=new HashSet();
1545 flagtagset.addAll(flagortable.keySet());
1546 flagtagset.addAll(flagandtable.keySet());
1547 flagtagset.addAll(tagsettable.keySet());
1548 flagtagset.addAll(tagcleartable.keySet());
1550 Iterator ftit=flagtagset.iterator();
1551 while(ftit.hasNext()) {
1552 TempDescriptor temp=(TempDescriptor)ftit.next();
1555 Set tagtmps=tagcleartable.get(temp);
1556 if (tagtmps!=null) {
1557 Iterator tagit=tagtmps.iterator();
1558 while(tagit.hasNext()) {
1559 TempDescriptor tagtmp=(TempDescriptor)tagit.next();
1560 if (GENERATEPRECISEGC)
1561 output.println("tagclear(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
1563 output.println("tagclear((struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
1567 tagtmps=tagsettable.get(temp);
1568 if (tagtmps!=null) {
1569 Iterator tagit=tagtmps.iterator();
1570 while(tagit.hasNext()) {
1571 TempDescriptor tagtmp=(TempDescriptor)tagit.next();
1572 if (GENERATEPRECISEGC)
1573 output.println("tagset(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
1575 output.println("tagset((struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
1580 int andmask=0xFFFFFFF;
1582 if (flagortable.containsKey(temp))
1583 ormask=((Integer)flagortable.get(temp)).intValue();
1584 if (flagandtable.containsKey(temp))
1585 andmask=((Integer)flagandtable.get(temp)).intValue();
1586 if (ffan.getTaskType()==FlatFlagActionNode.NEWOBJECT) {
1587 output.println("flagorandinit("+generateTemp(fm, temp)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
1589 output.println("flagorand("+generateTemp(fm, temp)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");