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 STRINGTYPE "+typeutil.getClass(TypeUtil.StringClass).getId());
104 outstructs.println("#define CHARARRAYTYPE "+
105 (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.CHAR)).makeArray(state))+state.numClasses()));
107 outstructs.println("#define BYTEARRAYTYPE "+
108 (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.BYTE)).makeArray(state))+state.numClasses()));
110 outstructs.println("#define BYTEARRAYARRAYTYPE "+
111 (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.BYTE)).makeArray(state).makeArray(state))+state.numClasses()));
113 outstructs.println("#define NUMCLASSES "+state.numClasses());
115 outstructs.println("#define STARTUPTYPE "+typeutil.getClass(TypeUtil.StartupClass).getId());
117 // Output the C class declarations
118 // These could mutually reference each other
120 outclassdefs.println("#include <pthread.h>");
122 outclassdefs.println("struct "+arraytype+";");
124 Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
125 while(it.hasNext()) {
126 ClassDescriptor cn=(ClassDescriptor)it.next();
127 outclassdefs.println("struct "+cn.getSafeSymbol()+";");
129 outclassdefs.println("");
131 //Print out definition for array type
132 outclassdefs.println("struct "+arraytype+" {");
133 outclassdefs.println(" int type;");
135 outclassdefs.println(" pthread_t tid;");
136 outclassdefs.println(" void * lockentry;");
137 outclassdefs.println(" int lockcount;");
141 outclassdefs.println(" int flag;");
142 outclassdefs.println(" void * flagptr;");
144 printClassStruct(typeutil.getClass(TypeUtil.ObjectClass), outclassdefs);
145 outclassdefs.println(" int ___length___;");
146 outclassdefs.println("};\n");
149 //Print out definitions for task types
150 outtask.println("struct parameterdescriptor {");
151 outtask.println("int type;");
152 outtask.println("int numberterms;");
153 outtask.println("int *intarray;");
154 outtask.println("void * queue;");
155 outtask.println("int numbertags;");
156 outtask.println("int *tagarray;");
157 outtask.println("};");
159 outtask.println("struct taskdescriptor {");
160 outtask.println("void * taskptr;");
161 outtask.println("int numParameters;");
162 outtask.println("struct parameterdescriptor **descriptorarray;");
163 outtask.println("char * name;");
164 outtask.println("};");
165 outtask.println("extern struct taskdescriptor * taskarray[];");
166 outtask.println("extern numtasks;");
170 // Output function prototypes and structures for parameters
171 it=state.getClassSymbolTable().getDescriptorsIterator();
172 while(it.hasNext()) {
173 ClassDescriptor cn=(ClassDescriptor)it.next();
174 generateCallStructs(cn, outclassdefs, outstructs, outmethodheader);
178 /* Map flags to integers */
179 it=state.getClassSymbolTable().getDescriptorsIterator();
180 while(it.hasNext()) {
181 ClassDescriptor cn=(ClassDescriptor)it.next();
185 generateTaskStructs(outstructs, outmethodheader);
188 outmethodheader.println("#endif");
190 outmethodheader.close();
192 /* Build the actual methods */
193 outmethod.println("#include \"methodheaders.h\"");
194 outmethod.println("#include \"virtualtable.h\"");
195 outmethod.println("#include <runtime.h>");
197 outmethod.println("#include <thread.h>");
198 if (state.main!=null) {
199 outmethod.println("#include <string.h>");
202 if (state.CONSCHECK) {
203 outmethod.println("#include \"checkers.h\"");
205 outclassdefs.println("extern int classsize[];");
206 outclassdefs.println("extern int hasflags[];");
207 outclassdefs.println("extern int * pointerarray[];");
208 outclassdefs.println("extern int supertypes[];");
210 //Store the sizes of classes & array elements
211 generateSizeArray(outmethod);
213 //Store table of supertypes
214 generateSuperTypeTable(outmethod);
216 //Store the layout of classes
217 generateLayoutStructs(outmethod);
219 /* Generate code for methods */
220 Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
221 while(classit.hasNext()) {
222 ClassDescriptor cn=(ClassDescriptor)classit.next();
223 Iterator methodit=cn.getMethods();
224 while(methodit.hasNext()) {
225 /* Classify parameters */
226 MethodDescriptor md=(MethodDescriptor)methodit.next();
227 FlatMethod fm=state.getMethodFlat(md);
228 if (!md.getModifiers().isNative())
229 generateFlatMethod(fm,outmethod);
234 /* Compile task based program */
235 outtaskdefs.println("#include \"task.h\"");
236 outtaskdefs.println("#include \"methodheaders.h\"");
237 Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
238 while(taskit.hasNext()) {
239 TaskDescriptor td=(TaskDescriptor)taskit.next();
240 FlatMethod fm=state.getMethodFlat(td);
241 generateFlatMethod(fm, outmethod);
242 generateTaskDescriptor(outtaskdefs, fm, td);
246 //Output task descriptors
247 taskit=state.getTaskSymbolTable().getDescriptorsIterator();
248 outtaskdefs.println("struct taskdescriptor * taskarray[]= {");
250 while(taskit.hasNext()) {
251 TaskDescriptor td=(TaskDescriptor)taskit.next();
255 outtaskdefs.println(",");
256 outtaskdefs.print("&task_"+td.getSafeSymbol());
258 outtaskdefs.println("};");
261 outtaskdefs.println("int numtasks="+state.getTaskSymbolTable().getValueSet().size()+";");
263 } else if (state.main!=null) {
264 /* Generate main method */
265 outmethod.println("int main(int argc, const char *argv[]) {");
266 outmethod.println(" int i;");
267 if (GENERATEPRECISEGC) {
268 outmethod.println(" struct ArrayObject * stringarray=allocate_newarray(NULL, STRINGARRAYTYPE, argc-1);");
270 outmethod.println(" struct ArrayObject * stringarray=allocate_newarray(STRINGARRAYTYPE, argc-1);");
273 outmethod.println("initializethreads();");
275 outmethod.println(" for(i=1;i<argc;i++) {");
276 outmethod.println(" int length=strlen(argv[i]);");
277 if (GENERATEPRECISEGC) {
278 outmethod.println(" struct ___String___ *newstring=NewString(NULL, argv[i], length);");
280 outmethod.println(" struct ___String___ *newstring=NewString(argv[i], length);");
282 outmethod.println(" ((void **)(((char *)& stringarray->___length___)+sizeof(int)))[i-1]=newstring;");
283 outmethod.println(" }");
286 ClassDescriptor cd=typeutil.getClass(state.main);
287 Set mainset=cd.getMethodTable().getSet("main");
288 for(Iterator mainit=mainset.iterator();mainit.hasNext();) {
289 MethodDescriptor md=(MethodDescriptor)mainit.next();
290 if (md.numParameters()!=1)
292 if (md.getParameter(0).getType().getArrayCount()!=1)
294 if (!md.getParameter(0).getType().getSymbol().equals("String"))
297 if (!md.getModifiers().isStatic())
298 throw new Error("Error: Non static main");
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(" }");
310 outmethod.println("pthread_mutex_lock(&gclistlock);");
311 outmethod.println("threadcount--;");
312 outmethod.println("pthread_cond_signal(&gccond);");
313 outmethod.println("pthread_mutex_unlock(&gclistlock);");
314 outmethod.println("pthread_exit(NULL);");
316 outmethod.println("}");
319 outstructs.println("#define MAXTASKPARAMS "+maxtaskparams);
322 /* Output structure definitions for repair tool */
323 if (state.structfile!=null) {
324 buildRepairStructs(outrepairstructs);
325 outrepairstructs.close();
327 outstructs.println("#endif");
333 private int maxcount=0;
335 private void buildRepairStructs(PrintWriter outrepairstructs) {
336 Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
337 while(classit.hasNext()) {
338 ClassDescriptor cn=(ClassDescriptor)classit.next();
339 outrepairstructs.println("structure "+cn.getSymbol()+" {");
340 outrepairstructs.println(" int __type__;");
342 outrepairstructs.println(" int __flag__;");
343 outrepairstructs.println(" int __flagptr__;");
345 printRepairStruct(cn, outrepairstructs);
346 outrepairstructs.println("}\n");
349 for(int i=0;i<state.numArrays();i++) {
350 TypeDescriptor tdarray=arraytable[i];
351 TypeDescriptor tdelement=tdarray.dereference();
352 outrepairstructs.println("structure "+arraytype+"_"+state.getArrayNumber(tdarray)+" {");
353 outrepairstructs.println(" int __type__;");
354 printRepairStruct(typeutil.getClass(TypeUtil.ObjectClass), outrepairstructs);
355 outrepairstructs.println(" int length;");
357 // Need to add support to repair tool for this
358 if (tdelement.isClass()||tdelement.isArray())
359 outrepairstructs.println(" "+tdelement.getRepairSymbol()+" * elem[this.length];");
361 outrepairstructs.println(" "+tdelement.getRepairSymbol()+" elem[this.length];");
363 outrepairstructs.println("}\n");
368 private void printRepairStruct(ClassDescriptor cn, PrintWriter output) {
369 ClassDescriptor sp=cn.getSuperDesc();
371 printRepairStruct(sp, output);
373 Vector fields=(Vector)fieldorder.get(cn);
375 for(int i=0;i<fields.size();i++) {
376 FieldDescriptor fd=(FieldDescriptor)fields.get(i);
377 if (fd.getType().isArray()) {
378 output.println(" "+arraytype+"_"+ state.getArrayNumber(fd.getType()) +" * "+fd.getSymbol()+";");
379 } else if (fd.getType().isClass())
380 output.println(" "+fd.getType().getRepairSymbol()+" * "+fd.getSymbol()+";");
381 else if (fd.getType().isFloat())
382 output.println(" int "+fd.getSymbol()+"; /* really float */");
384 output.println(" "+fd.getType().getRepairSymbol()+" "+fd.getSymbol()+";");
388 /** This method outputs TaskDescriptor information */
389 void generateTaskDescriptor(PrintWriter output, FlatMethod fm, TaskDescriptor task) {
390 for (int i=0;i<task.numParameters();i++) {
391 VarDescriptor param_var=task.getParameter(i);
392 TypeDescriptor param_type=task.getParamType(i);
393 FlagExpressionNode param_flag=task.getFlag(param_var);
394 TagExpressionList param_tag=task.getTag(param_var);
396 DNFFlag dflag=param_flag.getDNF();
398 Hashtable flags=(Hashtable)flagorder.get(param_type.getClassDesc());
399 output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
400 for(int j=0;j<dflag.size();j++) {
403 Vector term=dflag.get(j);
406 for(int k=0;k<term.size();k++) {
407 DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
408 FlagDescriptor fd=dfa.getFlag();
409 boolean negated=dfa.getNegated();
410 int flagid=1<<((Integer)flags.get(fd)).intValue();
415 output.print("0x"+Integer.toHexString(andmask)+", 0x"+Integer.toHexString(checkmask));
417 output.println("};");
419 output.println("int parametertag_"+i+"_"+task.getSafeSymbol()+"[]={");
420 //BUG...added next line to fix, test with any task program
422 for(int j=0;j<param_tag.numTags();j++) {
425 /* for each tag we need */
426 /* which slot it is */
427 /* what type it is */
428 TagVarDescriptor tvd=(TagVarDescriptor)task.getParameterTable().get(param_tag.getName(j));
429 TempDescriptor tmp=param_tag.getTemp(j);
430 int slot=fm.getTagInt(tmp);
431 output.println(slot+", "+state.getTagId(tvd.getTag()));
433 output.println("};");
435 output.println("struct parameterdescriptor parameter_"+i+"_"+task.getSafeSymbol()+"={");
436 output.println("/* type */"+param_type.getClassDesc().getId()+",");
437 output.println("/* number of DNF terms */"+dflag.size()+",");
438 output.println("parameterdnf_"+i+"_"+task.getSafeSymbol()+",");
439 output.println("0,");
440 //BUG, added next line to fix and else statement...test
441 //with any task program
443 output.println("/* number of tags */"+param_tag.numTags()+",");
445 output.println("/* number of tags */ 0,");
446 output.println("parametertag_"+i+"_"+task.getSafeSymbol());
447 output.println("};");
451 output.println("struct parameterdescriptor * parameterdescriptors_"+task.getSafeSymbol()+"[] = {");
452 for (int i=0;i<task.numParameters();i++) {
455 output.print("¶meter_"+i+"_"+task.getSafeSymbol());
457 output.println("};");
459 output.println("struct taskdescriptor task_"+task.getSafeSymbol()+"={");
460 output.println("&"+task.getSafeSymbol()+",");
461 output.println("/* number of parameters */" +task.numParameters() + ",");
462 output.println("parameterdescriptors_"+task.getSafeSymbol()+",");
463 output.println("\""+task.getSymbol()+"\"");
464 output.println("};");
468 /** The buildVirtualTables method outputs the virtual dispatch
469 * tables for methods. */
471 private void buildVirtualTables(PrintWriter outvirtual) {
472 Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
473 while(classit.hasNext()) {
474 ClassDescriptor cd=(ClassDescriptor)classit.next();
475 if (virtualcalls.getMethodCount(cd)>maxcount)
476 maxcount=virtualcalls.getMethodCount(cd);
478 MethodDescriptor[][] virtualtable=new MethodDescriptor[state.numClasses()+state.numArrays()][maxcount];
480 /* Fill in virtual table */
481 classit=state.getClassSymbolTable().getDescriptorsIterator();
482 while(classit.hasNext()) {
483 ClassDescriptor cd=(ClassDescriptor)classit.next();
484 fillinRow(cd, virtualtable, cd.getId());
487 ClassDescriptor objectcd=typeutil.getClass(TypeUtil.ObjectClass);
488 Iterator arrayit=state.getArrayIterator();
489 while(arrayit.hasNext()) {
490 TypeDescriptor td=(TypeDescriptor)arrayit.next();
491 int id=state.getArrayNumber(td);
492 fillinRow(objectcd, virtualtable, id+state.numClasses());
495 outvirtual.print("void * virtualtable[]={");
496 boolean needcomma=false;
497 for(int i=0;i<state.numClasses()+state.numArrays();i++) {
498 for(int j=0;j<maxcount;j++) {
500 outvirtual.print(", ");
501 if (virtualtable[i][j]!=null) {
502 MethodDescriptor md=virtualtable[i][j];
503 outvirtual.print("& "+md.getClassDesc().getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
505 outvirtual.print("0");
509 outvirtual.println("");
511 outvirtual.println("};");
515 private void fillinRow(ClassDescriptor cd, MethodDescriptor[][] virtualtable, int rownum) {
516 /* Get inherited methods */
517 if (cd.getSuperDesc()!=null)
518 fillinRow(cd.getSuperDesc(), virtualtable, rownum);
519 /* Override them with our methods */
520 for(Iterator it=cd.getMethods();it.hasNext();) {
521 MethodDescriptor md=(MethodDescriptor)it.next();
522 if (md.isStatic()||md.getReturnType()==null)
524 int methodnum=virtualcalls.getMethodNumber(md);
525 virtualtable[rownum][methodnum]=md;
529 /** Generate array that contains the sizes of class objects. The
530 * object allocation functions in the runtime use this
533 private void generateSizeArray(PrintWriter outclassdefs) {
534 outclassdefs.print("int classsize[]={");
535 Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
536 cdarray=new ClassDescriptor[state.numClasses()];
537 while(it.hasNext()) {
538 ClassDescriptor cd=(ClassDescriptor)it.next();
539 cdarray[cd.getId()]=cd;
541 boolean needcomma=false;
542 for(int i=0;i<state.numClasses();i++) {
544 outclassdefs.print(", ");
545 outclassdefs.print("sizeof(struct "+cdarray[i].getSafeSymbol()+")");
549 arraytable=new TypeDescriptor[state.numArrays()];
551 Iterator arrayit=state.getArrayIterator();
552 while(arrayit.hasNext()) {
553 TypeDescriptor td=(TypeDescriptor)arrayit.next();
554 int id=state.getArrayNumber(td);
558 for(int i=0;i<state.numArrays();i++) {
560 outclassdefs.print(", ");
561 TypeDescriptor tdelement=arraytable[i].dereference();
562 if (tdelement.isArray()||tdelement.isClass())
563 outclassdefs.print("sizeof(void *)");
565 outclassdefs.print("sizeof("+tdelement.getSafeSymbol()+")");
569 outclassdefs.println("};");
572 /** Constructs params and temp objects for each method or task.
573 * These objects tell the compiler which temps need to be
576 private void generateTempStructs(FlatMethod fm) {
577 MethodDescriptor md=fm.getMethod();
578 TaskDescriptor task=fm.getTask();
580 ParamsObject objectparams=md!=null?new ParamsObject(md,tag++):new ParamsObject(task, tag++);
582 paramstable.put(md, objectparams);
584 paramstable.put(task, objectparams);
586 for(int i=0;i<fm.numParameters();i++) {
587 TempDescriptor temp=fm.getParameter(i);
588 TypeDescriptor type=temp.getType();
589 if ((type.isPtr()||type.isArray())&&GENERATEPRECISEGC)
590 objectparams.addPtr(temp);
592 objectparams.addPrim(temp);
595 TempObject objecttemps=md!=null?new TempObject(objectparams,md,tag++):new TempObject(objectparams, task, tag++);
597 tempstable.put(md, objecttemps);
599 tempstable.put(task, objecttemps);
601 for(Iterator nodeit=fm.getNodeSet().iterator();nodeit.hasNext();) {
602 FlatNode fn=(FlatNode)nodeit.next();
603 TempDescriptor[] writes=fn.writesTemps();
604 for(int i=0;i<writes.length;i++) {
605 TempDescriptor temp=writes[i];
606 TypeDescriptor type=temp.getType();
607 if ((type.isPtr()||type.isArray())&&GENERATEPRECISEGC)
608 objecttemps.addPtr(temp);
610 objecttemps.addPrim(temp);
615 private void generateLayoutStructs(PrintWriter output) {
616 Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
617 while(it.hasNext()) {
618 ClassDescriptor cn=(ClassDescriptor)it.next();
619 output.println("int "+cn.getSafeSymbol()+"_pointers[]={");
620 Iterator allit=cn.getFieldTable().getAllDescriptorsIterator();
622 while(allit.hasNext()) {
623 FieldDescriptor fd=(FieldDescriptor)allit.next();
624 TypeDescriptor type=fd.getType();
625 if (type.isPtr()||type.isArray())
629 allit=cn.getFieldTable().getAllDescriptorsIterator();
630 while(allit.hasNext()) {
631 FieldDescriptor fd=(FieldDescriptor)allit.next();
632 TypeDescriptor type=fd.getType();
633 if (type.isPtr()||type.isArray()) {
635 output.print("((int)&(((struct "+cn.getSafeSymbol() +" *)0)->"+fd.getSafeSymbol()+"))");
638 output.println("};");
640 output.println("int * pointerarray[]={");
641 boolean needcomma=false;
642 for(int i=0;i<state.numClasses();i++) {
643 ClassDescriptor cn=cdarray[i];
647 output.print(cn.getSafeSymbol()+"_pointers");
650 for(int i=0;i<state.numArrays();i++) {
652 output.println(", ");
653 TypeDescriptor tdelement=arraytable[i].dereference();
654 if (tdelement.isArray()||tdelement.isClass())
655 output.print("((int *)1)");
661 output.println("};");
663 output.println("int hasflags[]={");
664 for(int i=0;i<state.numClasses();i++) {
665 ClassDescriptor cn=cdarray[i];
667 output.println(", ");
674 output.println("};");
677 /** Print out table to give us supertypes */
678 private void generateSuperTypeTable(PrintWriter output) {
679 output.println("int supertypes[]={");
680 boolean needcomma=false;
681 for(int i=0;i<state.numClasses();i++) {
682 ClassDescriptor cn=cdarray[i];
686 if (cn.getSuperDesc()!=null) {
687 ClassDescriptor cdsuper=cn.getSuperDesc();
688 output.print(cdsuper.getId());
692 output.println("};");
695 /** Force consistent field ordering between inherited classes. */
697 private void printClassStruct(ClassDescriptor cn, PrintWriter classdefout) {
698 ClassDescriptor sp=cn.getSuperDesc();
700 printClassStruct(sp, classdefout);
702 if (!fieldorder.containsKey(cn)) {
703 Vector fields=new Vector();
704 fieldorder.put(cn,fields);
705 Iterator fieldit=cn.getFields();
706 while(fieldit.hasNext()) {
707 FieldDescriptor fd=(FieldDescriptor)fieldit.next();
708 if (sp==null||!sp.getFieldTable().contains(fd.getSymbol()))
712 Vector fields=(Vector)fieldorder.get(cn);
714 for(int i=0;i<fields.size();i++) {
715 FieldDescriptor fd=(FieldDescriptor)fields.get(i);
716 if (fd.getType().isClass()||fd.getType().isArray())
717 classdefout.println(" struct "+fd.getType().getSafeSymbol()+" * "+fd.getSafeSymbol()+";");
719 classdefout.println(" "+fd.getType().getSafeSymbol()+" "+fd.getSafeSymbol()+";");
724 /* Map flags to integers consistently between inherited
727 private void mapFlags(ClassDescriptor cn) {
728 ClassDescriptor sp=cn.getSuperDesc();
732 if (!flagorder.containsKey(cn)) {
733 Hashtable flags=new Hashtable();
734 flagorder.put(cn,flags);
736 Hashtable superflags=(Hashtable)flagorder.get(sp);
737 Iterator superflagit=superflags.keySet().iterator();
738 while(superflagit.hasNext()) {
739 FlagDescriptor fd=(FlagDescriptor)superflagit.next();
740 Integer number=(Integer)superflags.get(fd);
741 flags.put(fd, number);
742 if ((number.intValue()+1)>max)
743 max=number.intValue()+1;
747 Iterator flagit=cn.getFlags();
748 while(flagit.hasNext()) {
749 FlagDescriptor fd=(FlagDescriptor)flagit.next();
750 if (sp==null||!sp.getFlagTable().contains(fd.getSymbol()))
751 flags.put(fd, new Integer(max++));
757 /** This function outputs (1) structures that parameters are
758 * passed in (when PRECISE GC is enabled) and (2) function
759 * prototypes for the methods */
761 private void generateCallStructs(ClassDescriptor cn, PrintWriter classdefout, PrintWriter output, PrintWriter headersout) {
762 /* Output class structure */
763 classdefout.println("struct "+cn.getSafeSymbol()+" {");
764 classdefout.println(" int type;");
766 classdefout.println(" pthread_t tid;");
767 classdefout.println(" void * lockentry;");
768 classdefout.println(" int lockcount;");
772 classdefout.println(" int flag;");
773 classdefout.println(" void * flagptr;");
775 printClassStruct(cn, classdefout);
776 classdefout.println("};\n");
778 /* Cycle through methods */
779 Iterator methodit=cn.getMethods();
780 while(methodit.hasNext()) {
781 /* Classify parameters */
782 MethodDescriptor md=(MethodDescriptor)methodit.next();
783 FlatMethod fm=state.getMethodFlat(md);
784 generateTempStructs(fm);
786 ParamsObject objectparams=(ParamsObject) paramstable.get(md);
787 TempObject objecttemps=(TempObject) tempstable.get(md);
789 /* Output parameter structure */
790 if (GENERATEPRECISEGC) {
791 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params {");
792 output.println(" int size;");
793 output.println(" void * next;");
794 for(int i=0;i<objectparams.numPointers();i++) {
795 TempDescriptor temp=objectparams.getPointer(i);
796 output.println(" struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
798 output.println("};\n");
801 /* Output temp structure */
802 if (GENERATEPRECISEGC) {
803 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals {");
804 output.println(" int size;");
805 output.println(" void * next;");
806 for(int i=0;i<objecttemps.numPointers();i++) {
807 TempDescriptor temp=objecttemps.getPointer(i);
808 if (temp.getType().isNull())
809 output.println(" void * "+temp.getSafeSymbol()+";");
811 output.println(" struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
813 output.println("};\n");
816 /* Output method declaration */
817 if (md.getReturnType()!=null) {
818 if (md.getReturnType().isClass()||md.getReturnType().isArray())
819 headersout.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
821 headersout.print(md.getReturnType().getSafeSymbol()+" ");
823 //catch the constructor case
824 headersout.print("void ");
825 headersout.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
827 boolean printcomma=false;
828 if (GENERATEPRECISEGC) {
829 headersout.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
833 //output parameter list
834 for(int i=0;i<objectparams.numPrimitives();i++) {
835 TempDescriptor temp=objectparams.getPrimitive(i);
837 headersout.print(", ");
839 if (temp.getType().isClass()||temp.getType().isArray())
840 headersout.print("struct " + temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
842 headersout.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
844 headersout.println(");\n");
849 /** This function outputs (1) structures that parameters are
850 * passed in (when PRECISE GC is enabled) and (2) function
851 * prototypes for the tasks */
853 private void generateTaskStructs(PrintWriter output, PrintWriter headersout) {
854 /* Cycle through tasks */
855 Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
857 while(taskit.hasNext()) {
858 /* Classify parameters */
859 TaskDescriptor task=(TaskDescriptor)taskit.next();
860 FlatMethod fm=state.getMethodFlat(task);
861 generateTempStructs(fm);
863 ParamsObject objectparams=(ParamsObject) paramstable.get(task);
864 TempObject objecttemps=(TempObject) tempstable.get(task);
866 /* Output parameter structure */
867 if (GENERATEPRECISEGC) {
868 output.println("struct "+task.getSafeSymbol()+"_params {");
870 output.println(" int size;");
871 output.println(" void * next;");
872 for(int i=0;i<objectparams.numPointers();i++) {
873 TempDescriptor temp=objectparams.getPointer(i);
874 output.println(" struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
876 for(int i=0;i<fm.numTags();i++) {
877 TempDescriptor temp=fm.getTag(i);
878 output.println(" struct TagDescriptor * "+temp.getSafeSymbol()+";");
881 output.println("};\n");
882 if ((objectparams.numPointers()+fm.numTags())>maxtaskparams) {
883 maxtaskparams=objectparams.numPointers()+fm.numTags();
887 /* Output temp structure */
888 if (GENERATEPRECISEGC) {
889 output.println("struct "+task.getSafeSymbol()+"_locals {");
890 output.println(" int size;");
891 output.println(" void * next;");
892 for(int i=0;i<objecttemps.numPointers();i++) {
893 TempDescriptor temp=objecttemps.getPointer(i);
894 if (temp.getType().isNull())
895 output.println(" void * "+temp.getSafeSymbol()+";");
897 output.println(" struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
899 output.println("};\n");
902 /* Output task declaration */
903 headersout.print("void " + task.getSafeSymbol()+"(");
905 boolean printcomma=false;
906 if (GENERATEPRECISEGC) {
907 headersout.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
909 headersout.print("void * parameterarray[]");
910 headersout.println(");\n");
914 /** Generate code for flatmethod fm. */
916 private void generateFlatMethod(FlatMethod fm, PrintWriter output) {
917 MethodDescriptor md=fm.getMethod();
918 TaskDescriptor task=fm.getTask();
920 ClassDescriptor cn=md!=null?md.getClassDesc():null;
922 ParamsObject objectparams=(ParamsObject)paramstable.get(md!=null?md:task);
924 generateHeader(fm, md!=null?md:task,output);
926 TempObject objecttemp=(TempObject) tempstable.get(md!=null?md:task);
929 if (GENERATEPRECISEGC) {
931 output.print(" struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
933 output.print(" struct "+task.getSafeSymbol()+"_locals "+localsprefix+"={");
935 output.print(objecttemp.numPointers()+",");
936 output.print(paramsprefix);
937 for(int j=0;j<objecttemp.numPointers();j++)
938 output.print(", NULL");
939 output.println("};");
942 for(int i=0;i<objecttemp.numPrimitives();i++) {
943 TempDescriptor td=objecttemp.getPrimitive(i);
944 TypeDescriptor type=td.getType();
946 output.println(" void * "+td.getSafeSymbol()+";");
947 else if (type.isClass()||type.isArray())
948 output.println(" struct "+type.getSafeSymbol()+" * "+td.getSafeSymbol()+";");
950 output.println(" "+type.getSafeSymbol()+" "+td.getSafeSymbol()+";");
953 /* Generate labels first */
954 HashSet tovisit=new HashSet();
955 HashSet visited=new HashSet();
957 Hashtable nodetolabel=new Hashtable();
958 tovisit.add(fm.methodEntryNode());
959 FlatNode current_node=null;
962 //Node needs a label if it is
963 while(!tovisit.isEmpty()) {
964 FlatNode fn=(FlatNode)tovisit.iterator().next();
967 for(int i=0;i<fn.numNext();i++) {
968 FlatNode nn=fn.getNext(i);
971 nodetolabel.put(nn,new Integer(labelindex++));
973 if (!visited.contains(nn)&&!tovisit.contains(nn)) {
977 nodetolabel.put(nn,new Integer(labelindex++));
982 if (state.THREAD&&GENERATEPRECISEGC) {
983 output.println("checkcollect(&"+localsprefix+");");
986 //Do the actual code generation
987 tovisit=new HashSet();
988 visited=new HashSet();
989 tovisit.add(fm.methodEntryNode());
990 while(current_node!=null||!tovisit.isEmpty()) {
991 if (current_node==null) {
992 current_node=(FlatNode)tovisit.iterator().next();
993 tovisit.remove(current_node);
995 visited.add(current_node);
996 if (nodetolabel.containsKey(current_node))
997 output.println("L"+nodetolabel.get(current_node)+":");
998 if (state.INSTRUCTIONFAILURE) {
1000 output.println("if ((++instructioncount)>failurecount) {instructioncount=0;injectinstructionfailure();}");
1003 output.println("if ((--instructioncount)==0) injectinstructionfailure();");
1005 if (current_node.numNext()==0) {
1007 generateFlatNode(fm, current_node, output);
1008 if (current_node.kind()!=FKind.FlatReturnNode) {
1009 output.println(" return;");
1012 } else if(current_node.numNext()==1) {
1014 generateFlatNode(fm, current_node, output);
1015 FlatNode nextnode=current_node.getNext(0);
1016 if (visited.contains(nextnode)) {
1017 output.println("goto L"+nodetolabel.get(nextnode)+";");
1020 current_node=nextnode;
1021 } else if (current_node.numNext()==2) {
1024 generateFlatCondBranch(fm, (FlatCondBranch)current_node, "L"+nodetolabel.get(current_node.getNext(1)), output);
1025 if (!visited.contains(current_node.getNext(1)))
1026 tovisit.add(current_node.getNext(1));
1027 if (visited.contains(current_node.getNext(0))) {
1028 output.println("goto L"+nodetolabel.get(current_node.getNext(0))+";");
1031 current_node=current_node.getNext(0);
1032 } else throw new Error();
1036 output.println("}\n\n");
1039 /** Generate text string that corresponds to the Temp td. */
1040 private String generateTemp(FlatMethod fm, TempDescriptor td) {
1041 MethodDescriptor md=fm.getMethod();
1042 TaskDescriptor task=fm.getTask();
1043 TempObject objecttemps=(TempObject) tempstable.get(md!=null?md:task);
1045 if (objecttemps.isLocalPrim(td)||objecttemps.isParamPrim(td)) {
1046 return td.getSafeSymbol();
1049 if (objecttemps.isLocalPtr(td)) {
1050 return localsprefix+"."+td.getSafeSymbol();
1053 if (objecttemps.isParamPtr(td)) {
1054 return paramsprefix+"->"+td.getSafeSymbol();
1059 private void generateFlatNode(FlatMethod fm, FlatNode fn, PrintWriter output) {
1061 case FKind.FlatTagDeclaration:
1062 generateFlatTagDeclaration(fm, (FlatTagDeclaration) fn,output);
1064 case FKind.FlatCall:
1065 generateFlatCall(fm, (FlatCall) fn,output);
1067 case FKind.FlatFieldNode:
1068 generateFlatFieldNode(fm, (FlatFieldNode) fn,output);
1070 case FKind.FlatElementNode:
1071 generateFlatElementNode(fm, (FlatElementNode) fn,output);
1073 case FKind.FlatSetElementNode:
1074 generateFlatSetElementNode(fm, (FlatSetElementNode) fn,output);
1076 case FKind.FlatSetFieldNode:
1077 generateFlatSetFieldNode(fm, (FlatSetFieldNode) fn,output);
1080 generateFlatNew(fm, (FlatNew) fn,output);
1082 case FKind.FlatOpNode:
1083 generateFlatOpNode(fm, (FlatOpNode) fn,output);
1085 case FKind.FlatCastNode:
1086 generateFlatCastNode(fm, (FlatCastNode) fn,output);
1088 case FKind.FlatLiteralNode:
1089 generateFlatLiteralNode(fm, (FlatLiteralNode) fn,output);
1091 case FKind.FlatReturnNode:
1092 generateFlatReturnNode(fm, (FlatReturnNode) fn,output);
1095 output.println("/* nop */");
1097 case FKind.FlatBackEdge:
1098 if (state.THREAD&&GENERATEPRECISEGC) {
1099 output.println("checkcollect(&"+localsprefix+");");
1101 output.println("/* nop */");
1103 case FKind.FlatCheckNode:
1104 generateFlatCheckNode(fm, (FlatCheckNode) fn, output);
1106 case FKind.FlatFlagActionNode:
1107 generateFlatFlagActionNode(fm, (FlatFlagActionNode) fn, output);
1114 private void generateFlatCheckNode(FlatMethod fm, FlatCheckNode fcn, PrintWriter output) {
1116 if (state.CONSCHECK) {
1117 String specname=fcn.getSpec();
1118 String varname="repairstate___";
1119 output.println("{");
1120 output.println("struct "+specname+"_state * "+varname+"=allocate"+specname+"_state();");
1122 TempDescriptor[] temps=fcn.getTemps();
1123 String[] vars=fcn.getVars();
1124 for(int i=0;i<temps.length;i++) {
1125 output.println(varname+"->"+vars[i]+"=(int)"+generateTemp(fm, temps[i])+";");
1128 output.println("if (doanalysis"+specname+"("+varname+")) {");
1129 output.println("free"+specname+"_state("+varname+");");
1130 output.println("} else {");
1131 output.println("/* Bad invariant */");
1132 output.println("free"+specname+"_state("+varname+");");
1133 output.println("abort_task();");
1134 output.println("}");
1136 output.println("}");
1140 private void generateFlatCall(FlatMethod fm, FlatCall fc, PrintWriter output) {
1141 MethodDescriptor md=fc.getMethod();
1142 ParamsObject objectparams=(ParamsObject) paramstable.get(md);
1143 ClassDescriptor cn=md.getClassDesc();
1144 output.println("{");
1145 if (GENERATEPRECISEGC) {
1146 output.print(" struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
1148 output.print(objectparams.numPointers());
1149 // output.print(objectparams.getUID());
1150 output.print(", & "+localsprefix);
1151 if (fc.getThis()!=null) {
1153 output.print("(struct "+md.getThis().getType().getSafeSymbol() +" *)"+ generateTemp(fm,fc.getThis()));
1155 for(int i=0;i<fc.numArgs();i++) {
1156 VarDescriptor var=md.getParameter(i);
1157 TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1158 if (objectparams.isParamPtr(paramtemp)) {
1159 TempDescriptor targ=fc.getArg(i);
1161 output.print("(struct "+md.getParamType(i).getSafeSymbol() +" *)"+generateTemp(fm, targ));
1164 output.println("};");
1169 if (fc.getReturnTemp()!=null)
1170 output.print(generateTemp(fm,fc.getReturnTemp())+"=");
1172 /* Do we need to do virtual dispatch? */
1173 if (md.isStatic()||md.getReturnType()==null||singleCall(fc.getThis().getType().getClassDesc(),md)) {
1174 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
1178 if (md.getReturnType().isClass()||md.getReturnType().isArray())
1179 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1181 output.print(md.getReturnType().getSafeSymbol()+" ");
1182 output.print("(*)(");
1184 boolean printcomma=false;
1185 if (GENERATEPRECISEGC) {
1186 output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * ");
1191 for(int i=0;i<objectparams.numPrimitives();i++) {
1192 TempDescriptor temp=objectparams.getPrimitive(i);
1196 if (temp.getType().isClass()||temp.getType().isArray())
1197 output.print("struct " + temp.getType().getSafeSymbol()+" * ");
1199 output.print(temp.getType().getSafeSymbol());
1202 output.print("))virtualtable["+generateTemp(fm,fc.getThis())+"->type*"+maxcount+"+"+virtualcalls.getMethodNumber(md)+"])");
1206 boolean needcomma=false;
1207 if (GENERATEPRECISEGC) {
1208 output.print("&__parameterlist__");
1211 if (fc.getThis()!=null) {
1212 TypeDescriptor ptd=md.getThis().getType();
1213 if (ptd.isClass()&&!ptd.isArray())
1214 output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1215 output.print(generateTemp(fm,fc.getThis()));
1219 for(int i=0;i<fc.numArgs();i++) {
1220 VarDescriptor var=md.getParameter(i);
1221 TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1222 if (objectparams.isParamPrim(paramtemp)) {
1223 TempDescriptor targ=fc.getArg(i);
1227 TypeDescriptor ptd=md.getParamType(i);
1228 if (ptd.isClass()&&!ptd.isArray())
1229 output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1230 output.print(generateTemp(fm, targ));
1234 output.println(");");
1235 output.println(" }");
1238 private boolean singleCall(ClassDescriptor thiscd, MethodDescriptor md) {
1239 Set subclasses=typeutil.getSubClasses(thiscd);
1240 if (subclasses==null)
1242 for(Iterator classit=subclasses.iterator();classit.hasNext();) {
1243 ClassDescriptor cd=(ClassDescriptor)classit.next();
1244 Set possiblematches=cd.getMethodTable().getSet(md.getSymbol());
1245 for(Iterator matchit=possiblematches.iterator();matchit.hasNext();) {
1246 MethodDescriptor matchmd=(MethodDescriptor)matchit.next();
1247 if (md.matches(matchmd))
1254 private void generateFlatFieldNode(FlatMethod fm, FlatFieldNode ffn, PrintWriter output) {
1255 output.println(generateTemp(fm, ffn.getDst())+"="+ generateTemp(fm,ffn.getSrc())+"->"+ ffn.getField().getSafeSymbol()+";");
1258 private void generateFlatSetFieldNode(FlatMethod fm, FlatSetFieldNode fsfn, PrintWriter output) {
1259 if (fsfn.getField().getSymbol().equals("length")&&fsfn.getDst().getType().isArray())
1260 throw new Error("Can't set array length");
1261 output.println(generateTemp(fm, fsfn.getDst())+"->"+ fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc())+";");
1264 private void generateFlatElementNode(FlatMethod fm, FlatElementNode fen, PrintWriter output) {
1265 TypeDescriptor elementtype=fen.getSrc().getType().dereference();
1268 if (elementtype.isArray()||elementtype.isClass())
1271 type=elementtype.getSafeSymbol()+" ";
1273 if (fen.needsBoundsCheck()) {
1274 output.println("if ("+generateTemp(fm, fen.getIndex())+"< 0 || "+generateTemp(fm, fen.getIndex())+" >= "+generateTemp(fm,fen.getSrc()) + "->___length___)");
1275 output.println("failedboundschk();");
1278 output.println(generateTemp(fm, fen.getDst())+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc())+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex())+"];");
1281 private void generateFlatSetElementNode(FlatMethod fm, FlatSetElementNode fsen, PrintWriter output) {
1282 //TODO: need dynamic check to make sure this assignment is actually legal
1283 //Because Object[] could actually be something more specific...ie. Integer[]
1285 TypeDescriptor elementtype=fsen.getDst().getType().dereference();
1288 if (elementtype.isArray()||elementtype.isClass())
1291 type=elementtype.getSafeSymbol()+" ";
1293 if (fsen.needsBoundsCheck()) {
1294 output.println("if ("+generateTemp(fm, fsen.getIndex())+"< 0 || "+generateTemp(fm, fsen.getIndex())+" >= "+generateTemp(fm,fsen.getDst()) + "->___length___)");
1295 output.println("failedboundschk();");
1298 output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst())+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex())+"]="+generateTemp(fm,fsen.getSrc())+";");
1301 private void generateFlatNew(FlatMethod fm, FlatNew fn, PrintWriter output) {
1302 if (fn.getType().isArray()) {
1303 int arrayid=state.getArrayNumber(fn.getType())+state.numClasses();
1304 if (GENERATEPRECISEGC) {
1305 output.println(generateTemp(fm,fn.getDst())+"=allocate_newarray(&"+localsprefix+", "+arrayid+", "+generateTemp(fm, fn.getSize())+");");
1307 output.println(generateTemp(fm,fn.getDst())+"=allocate_newarray("+arrayid+", "+generateTemp(fm, fn.getSize())+");");
1310 if (GENERATEPRECISEGC) {
1311 output.println(generateTemp(fm,fn.getDst())+"=allocate_new(&"+localsprefix+", "+fn.getType().getClassDesc().getId()+");");
1313 output.println(generateTemp(fm,fn.getDst())+"=allocate_new("+fn.getType().getClassDesc().getId()+");");
1319 private void generateFlatTagDeclaration(FlatMethod fm, FlatTagDeclaration fn, PrintWriter output) {
1320 if (GENERATEPRECISEGC) {
1321 output.println(generateTemp(fm,fn.getDst())+"=allocate_tag(&"+localsprefix+", "+state.getTagId(fn.getType())+");");
1323 output.println(generateTemp(fm,fn.getDst())+"=allocate_tag("+state.getTagId(fn.getType())+");");
1327 private void generateFlatOpNode(FlatMethod fm, FlatOpNode fon, PrintWriter output) {
1329 if (fon.getRight()!=null)
1330 output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+fon.getOp().toString()+generateTemp(fm,fon.getRight())+";");
1331 else if (fon.getOp().getOp()==Operation.ASSIGN)
1332 output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+";");
1333 else if (fon.getOp().getOp()==Operation.UNARYPLUS)
1334 output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+";");
1335 else if (fon.getOp().getOp()==Operation.UNARYMINUS)
1336 output.println(generateTemp(fm, fon.getDest())+" = -"+generateTemp(fm, fon.getLeft())+";");
1337 else if (fon.getOp().getOp()==Operation.LOGIC_NOT)
1338 output.println(generateTemp(fm, fon.getDest())+" = !"+generateTemp(fm, fon.getLeft())+";");
1340 output.println(generateTemp(fm, fon.getDest())+fon.getOp().toString()+generateTemp(fm, fon.getLeft())+";");
1343 private void generateFlatCastNode(FlatMethod fm, FlatCastNode fcn, PrintWriter output) {
1344 /* TODO: Do type check here */
1345 if (fcn.getType().isArray()) {
1347 } else if (fcn.getType().isClass())
1348 output.println(generateTemp(fm,fcn.getDst())+"=(struct "+fcn.getType().getSafeSymbol()+" *)"+generateTemp(fm,fcn.getSrc())+";");
1350 output.println(generateTemp(fm,fcn.getDst())+"=("+fcn.getType().getSafeSymbol()+")"+generateTemp(fm,fcn.getSrc())+";");
1353 private void generateFlatLiteralNode(FlatMethod fm, FlatLiteralNode fln, PrintWriter output) {
1354 if (fln.getValue()==null)
1355 output.println(generateTemp(fm, fln.getDst())+"=0;");
1356 else if (fln.getType().getSymbol().equals(TypeUtil.StringClass)) {
1357 if (GENERATEPRECISEGC) {
1358 output.println(generateTemp(fm, fln.getDst())+"=NewString(&"+localsprefix+", \""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
1360 output.println(generateTemp(fm, fln.getDst())+"=NewString(\""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
1362 } else if (fln.getType().isBoolean()) {
1363 if (((Boolean)fln.getValue()).booleanValue())
1364 output.println(generateTemp(fm, fln.getDst())+"=1;");
1366 output.println(generateTemp(fm, fln.getDst())+"=0;");
1367 } else if (fln.getType().isChar()) {
1368 String st=FlatLiteralNode.escapeString(fln.getValue().toString());
1369 output.println(generateTemp(fm, fln.getDst())+"='"+st+"';");
1371 output.println(generateTemp(fm, fln.getDst())+"="+fln.getValue()+";");
1374 private void generateFlatReturnNode(FlatMethod fm, FlatReturnNode frn, PrintWriter output) {
1376 if (frn.getReturnTemp()!=null)
1377 output.println("return "+generateTemp(fm, frn.getReturnTemp())+";");
1379 output.println("return;");
1382 private void generateFlatCondBranch(FlatMethod fm, FlatCondBranch fcb, String label, PrintWriter output) {
1383 output.println("if (!"+generateTemp(fm, fcb.getTest())+") goto "+label+";");
1386 private void generateHeader(FlatMethod fm, Descriptor des, PrintWriter output) {
1388 ParamsObject objectparams=(ParamsObject)paramstable.get(des);
1389 MethodDescriptor md=null;
1390 TaskDescriptor task=null;
1391 if (des instanceof MethodDescriptor)
1392 md=(MethodDescriptor) des;
1394 task=(TaskDescriptor) des;
1396 ClassDescriptor cn=md!=null?md.getClassDesc():null;
1398 if (md!=null&&md.getReturnType()!=null) {
1399 if (md.getReturnType().isClass()||md.getReturnType().isArray())
1400 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1402 output.print(md.getReturnType().getSafeSymbol()+" ");
1404 //catch the constructor case
1405 output.print("void ");
1407 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1409 output.print(task.getSafeSymbol()+"(");
1411 boolean printcomma=false;
1412 if (GENERATEPRECISEGC) {
1414 output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1416 output.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
1422 for(int i=0;i<objectparams.numPrimitives();i++) {
1423 TempDescriptor temp=objectparams.getPrimitive(i);
1427 if (temp.getType().isClass()||temp.getType().isArray())
1428 output.print("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
1430 output.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
1432 output.println(") {");
1433 } else if (!GENERATEPRECISEGC) {
1434 /* Imprecise Task */
1435 output.println("void * parameterarray[]) {");
1436 /* Unpack variables */
1437 for(int i=0;i<objectparams.numPrimitives();i++) {
1438 TempDescriptor temp=objectparams.getPrimitive(i);
1439 output.println("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+"=parameterarray["+i+"];");
1441 for(int i=0;i<fm.numTags();i++) {
1442 TempDescriptor temp=fm.getTag(i);
1443 int offset=i+objectparams.numPrimitives();
1444 output.println("struct TagDescriptor * "+temp.getSafeSymbol()+"=parameterarray["+offset+"];");
1447 if ((objectparams.numPrimitives()+fm.numTags())>maxtaskparams)
1448 maxtaskparams=objectparams.numPrimitives()+fm.numTags();
1449 } else output.println(") {");
1452 public void generateFlatFlagActionNode(FlatMethod fm, FlatFlagActionNode ffan, PrintWriter output) {
1453 output.println("/* FlatFlagActionNode */");
1454 Hashtable flagandtable=new Hashtable();
1455 Hashtable flagortable=new Hashtable();
1457 /* Process flag changes */
1458 Iterator flagsit=ffan.getTempFlagPairs();
1459 while(flagsit.hasNext()) {
1460 TempFlagPair tfp=(TempFlagPair)flagsit.next();
1461 TempDescriptor temp=tfp.getTemp();
1462 Hashtable flagtable=(Hashtable)flagorder.get(temp.getType().getClassDesc());
1463 FlagDescriptor flag=tfp.getFlag();
1465 //Newly allocate objects that don't set any flags case
1466 if (flagortable.containsKey(temp)) {
1470 flagortable.put(temp,new Integer(mask));
1472 int flagid=1<<((Integer)flagtable.get(flag)).intValue();
1473 boolean flagstatus=ffan.getFlagChange(tfp);
1476 if (flagortable.containsKey(temp)) {
1477 mask=((Integer)flagortable.get(temp)).intValue();
1480 flagortable.put(temp,new Integer(mask));
1482 int mask=0xFFFFFFFF;
1483 if (flagandtable.containsKey(temp)) {
1484 mask=((Integer)flagandtable.get(temp)).intValue();
1486 mask&=(0xFFFFFFFF^flagid);
1487 flagandtable.put(temp,new Integer(mask));
1492 Iterator orit=flagortable.keySet().iterator();
1493 while(orit.hasNext()) {
1494 TempDescriptor temp=(TempDescriptor)orit.next();
1495 int ormask=((Integer)flagortable.get(temp)).intValue();
1496 int andmask=0xFFFFFFF;
1497 if (flagandtable.containsKey(temp))
1498 andmask=((Integer)flagandtable.get(temp)).intValue();
1499 if (ffan.getTaskType()==FlatFlagActionNode.NEWOBJECT) {
1500 output.println("flagorandinit("+generateTemp(fm, temp)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
1502 output.println("flagorand("+generateTemp(fm, temp)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
1505 Iterator andit=flagandtable.keySet().iterator();
1506 while(andit.hasNext()) {
1507 TempDescriptor temp=(TempDescriptor)andit.next();
1508 int andmask=((Integer)flagandtable.get(temp)).intValue();
1509 if (!flagortable.containsKey(temp)) {
1510 if (ffan.getTaskType()==FlatFlagActionNode.NEWOBJECT)
1511 output.println("flagorandinit("+generateTemp(fm, temp)+", 0, 0x"+Integer.toHexString(andmask)+");");
1513 output.println("flagorand("+generateTemp(fm, temp)+", 0, 0x"+Integer.toHexString(andmask)+");");
1517 /* Process tag changes */
1518 Relation tagsettable=new Relation();
1519 Relation tagcleartable=new Relation();
1521 Iterator tagsit=ffan.getTempTagPairs();
1522 while (tagsit.hasNext()) {
1523 TempTagPair ttp=(TempTagPair) tagsit.next();
1524 TempDescriptor objtmp=ttp.getTemp();
1525 TagDescriptor tag=ttp.getTag();
1526 TempDescriptor tagtmp=ttp.getTagTemp();
1527 boolean tagstatus=ffan.getTagChange(ttp);
1529 tagsettable.put(objtmp, tagtmp);
1531 tagcleartable.put(objtmp, tagtmp);
1535 Iterator clearit=tagcleartable.keySet().iterator();
1536 while(clearit.hasNext()) {
1537 TempDescriptor objtmp=(TempDescriptor)clearit.next();
1538 Set tagtmps=tagcleartable.get(objtmp);
1539 Iterator tagit=tagtmps.iterator();
1540 while(tagit.hasNext()) {
1541 TempDescriptor tagtmp=(TempDescriptor)tagit.next();
1542 output.println("tagclear("+generateTemp(fm, objtmp)+", "+generateTemp(fm,tagtmp)+");");
1546 Iterator setit=tagsettable.keySet().iterator();
1547 while(setit.hasNext()) {
1548 TempDescriptor objtmp=(TempDescriptor)setit.next();
1549 Set tagtmps=tagcleartable.get(objtmp);
1550 Iterator tagit=tagtmps.iterator();
1551 while(tagit.hasNext()) {
1552 TempDescriptor tagtmp=(TempDescriptor)tagit.next();
1553 output.println("tagset("+generateTemp(fm, objtmp)+", "+generateTemp(fm,tagtmp)+");");