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 if (md.getParameter(0).getType().getArrayCount()!=1)
304 if (!md.getParameter(0).getType().getSymbol().equals("String"))
307 if (!md.getModifiers().isStatic())
308 throw new Error("Error: Non static main");
309 outmethod.println(" {");
310 if (GENERATEPRECISEGC) {
311 outmethod.print(" struct "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
312 outmethod.println("1, NULL,"+"stringarray};");
313 outmethod.println(" "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(& __parameterlist__);");
315 outmethod.println(" "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(stringarray);");
316 outmethod.println(" }");
320 outmethod.println("pthread_mutex_lock(&gclistlock);");
321 outmethod.println("threadcount--;");
322 outmethod.println("pthread_cond_signal(&gccond);");
323 outmethod.println("pthread_mutex_unlock(&gclistlock);");
324 outmethod.println("pthread_exit(NULL);");
326 outmethod.println("}");
329 outstructs.println("#define MAXTASKPARAMS "+maxtaskparams);
332 /* Output structure definitions for repair tool */
333 if (state.structfile!=null) {
334 buildRepairStructs(outrepairstructs);
335 outrepairstructs.close();
337 outstructs.println("#endif");
343 private int maxcount=0;
345 private void buildRepairStructs(PrintWriter outrepairstructs) {
346 Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
347 while(classit.hasNext()) {
348 ClassDescriptor cn=(ClassDescriptor)classit.next();
349 outrepairstructs.println("structure "+cn.getSymbol()+" {");
350 outrepairstructs.println(" int __type__;");
352 outrepairstructs.println(" int __flag__;");
353 outrepairstructs.println(" int __flagptr__;");
355 printRepairStruct(cn, outrepairstructs);
356 outrepairstructs.println("}\n");
359 for(int i=0;i<state.numArrays();i++) {
360 TypeDescriptor tdarray=arraytable[i];
361 TypeDescriptor tdelement=tdarray.dereference();
362 outrepairstructs.println("structure "+arraytype+"_"+state.getArrayNumber(tdarray)+" {");
363 outrepairstructs.println(" int __type__;");
364 printRepairStruct(typeutil.getClass(TypeUtil.ObjectClass), outrepairstructs);
365 outrepairstructs.println(" int length;");
367 // Need to add support to repair tool for this
368 if (tdelement.isClass()||tdelement.isArray())
369 outrepairstructs.println(" "+tdelement.getRepairSymbol()+" * elem[this.length];");
371 outrepairstructs.println(" "+tdelement.getRepairSymbol()+" elem[this.length];");
373 outrepairstructs.println("}\n");
378 private void printRepairStruct(ClassDescriptor cn, PrintWriter output) {
379 ClassDescriptor sp=cn.getSuperDesc();
381 printRepairStruct(sp, output);
383 Vector fields=(Vector)fieldorder.get(cn);
385 for(int i=0;i<fields.size();i++) {
386 FieldDescriptor fd=(FieldDescriptor)fields.get(i);
387 if (fd.getType().isArray()) {
388 output.println(" "+arraytype+"_"+ state.getArrayNumber(fd.getType()) +" * "+fd.getSymbol()+";");
389 } else if (fd.getType().isClass())
390 output.println(" "+fd.getType().getRepairSymbol()+" * "+fd.getSymbol()+";");
391 else if (fd.getType().isFloat())
392 output.println(" int "+fd.getSymbol()+"; /* really float */");
394 output.println(" "+fd.getType().getRepairSymbol()+" "+fd.getSymbol()+";");
398 /** This method outputs TaskDescriptor information */
399 void generateTaskDescriptor(PrintWriter output, FlatMethod fm, TaskDescriptor task) {
400 for (int i=0;i<task.numParameters();i++) {
401 VarDescriptor param_var=task.getParameter(i);
402 TypeDescriptor param_type=task.getParamType(i);
403 FlagExpressionNode param_flag=task.getFlag(param_var);
404 TagExpressionList param_tag=task.getTag(param_var);
406 DNFFlag dflag=param_flag.getDNF();
408 Hashtable flags=(Hashtable)flagorder.get(param_type.getClassDesc());
409 output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
410 for(int j=0;j<dflag.size();j++) {
413 Vector term=dflag.get(j);
416 for(int k=0;k<term.size();k++) {
417 DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
418 FlagDescriptor fd=dfa.getFlag();
419 boolean negated=dfa.getNegated();
420 int flagid=1<<((Integer)flags.get(fd)).intValue();
425 output.print("0x"+Integer.toHexString(andmask)+", 0x"+Integer.toHexString(checkmask));
427 output.println("};");
429 output.println("int parametertag_"+i+"_"+task.getSafeSymbol()+"[]={");
430 //BUG...added next line to fix, test with any task program
432 for(int j=0;j<param_tag.numTags();j++) {
435 /* for each tag we need */
436 /* which slot it is */
437 /* what type it is */
438 TagVarDescriptor tvd=(TagVarDescriptor)task.getParameterTable().get(param_tag.getName(j));
439 TempDescriptor tmp=param_tag.getTemp(j);
440 int slot=fm.getTagInt(tmp);
441 output.println(slot+", "+state.getTagId(tvd.getTag()));
443 output.println("};");
445 output.println("struct parameterdescriptor parameter_"+i+"_"+task.getSafeSymbol()+"={");
446 output.println("/* type */"+param_type.getClassDesc().getId()+",");
447 output.println("/* number of DNF terms */"+dflag.size()+",");
448 output.println("parameterdnf_"+i+"_"+task.getSafeSymbol()+",");
449 output.println("0,");
450 //BUG, added next line to fix and else statement...test
451 //with any task program
453 output.println("/* number of tags */"+param_tag.numTags()+",");
455 output.println("/* number of tags */ 0,");
456 output.println("parametertag_"+i+"_"+task.getSafeSymbol());
457 output.println("};");
461 output.println("struct parameterdescriptor * parameterdescriptors_"+task.getSafeSymbol()+"[] = {");
462 for (int i=0;i<task.numParameters();i++) {
465 output.print("¶meter_"+i+"_"+task.getSafeSymbol());
467 output.println("};");
469 output.println("struct taskdescriptor task_"+task.getSafeSymbol()+"={");
470 output.println("&"+task.getSafeSymbol()+",");
471 output.println("/* number of parameters */" +task.numParameters() + ",");
472 int numtotal=task.numParameters()+fm.numTags();
473 output.println("/* number total parameters */" +numtotal + ",");
474 output.println("parameterdescriptors_"+task.getSafeSymbol()+",");
475 output.println("\""+task.getSymbol()+"\"");
476 output.println("};");
480 /** The buildVirtualTables method outputs the virtual dispatch
481 * tables for methods. */
483 private void buildVirtualTables(PrintWriter outvirtual) {
484 Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
485 while(classit.hasNext()) {
486 ClassDescriptor cd=(ClassDescriptor)classit.next();
487 if (virtualcalls.getMethodCount(cd)>maxcount)
488 maxcount=virtualcalls.getMethodCount(cd);
490 MethodDescriptor[][] virtualtable=new MethodDescriptor[state.numClasses()+state.numArrays()][maxcount];
492 /* Fill in virtual table */
493 classit=state.getClassSymbolTable().getDescriptorsIterator();
494 while(classit.hasNext()) {
495 ClassDescriptor cd=(ClassDescriptor)classit.next();
496 fillinRow(cd, virtualtable, cd.getId());
499 ClassDescriptor objectcd=typeutil.getClass(TypeUtil.ObjectClass);
500 Iterator arrayit=state.getArrayIterator();
501 while(arrayit.hasNext()) {
502 TypeDescriptor td=(TypeDescriptor)arrayit.next();
503 int id=state.getArrayNumber(td);
504 fillinRow(objectcd, virtualtable, id+state.numClasses());
507 outvirtual.print("void * virtualtable[]={");
508 boolean needcomma=false;
509 for(int i=0;i<state.numClasses()+state.numArrays();i++) {
510 for(int j=0;j<maxcount;j++) {
512 outvirtual.print(", ");
513 if (virtualtable[i][j]!=null) {
514 MethodDescriptor md=virtualtable[i][j];
515 outvirtual.print("& "+md.getClassDesc().getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
517 outvirtual.print("0");
521 outvirtual.println("");
523 outvirtual.println("};");
527 private void fillinRow(ClassDescriptor cd, MethodDescriptor[][] virtualtable, int rownum) {
528 /* Get inherited methods */
529 if (cd.getSuperDesc()!=null)
530 fillinRow(cd.getSuperDesc(), virtualtable, rownum);
531 /* Override them with our methods */
532 for(Iterator it=cd.getMethods();it.hasNext();) {
533 MethodDescriptor md=(MethodDescriptor)it.next();
534 if (md.isStatic()||md.getReturnType()==null)
536 int methodnum=virtualcalls.getMethodNumber(md);
537 virtualtable[rownum][methodnum]=md;
541 /** Generate array that contains the sizes of class objects. The
542 * object allocation functions in the runtime use this
545 private void generateSizeArray(PrintWriter outclassdefs) {
546 outclassdefs.print("int classsize[]={");
547 Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
548 cdarray=new ClassDescriptor[state.numClasses()];
549 while(it.hasNext()) {
550 ClassDescriptor cd=(ClassDescriptor)it.next();
551 cdarray[cd.getId()]=cd;
553 boolean needcomma=false;
554 for(int i=0;i<state.numClasses();i++) {
556 outclassdefs.print(", ");
557 outclassdefs.print("sizeof(struct "+cdarray[i].getSafeSymbol()+")");
561 arraytable=new TypeDescriptor[state.numArrays()];
563 Iterator arrayit=state.getArrayIterator();
564 while(arrayit.hasNext()) {
565 TypeDescriptor td=(TypeDescriptor)arrayit.next();
566 int id=state.getArrayNumber(td);
570 for(int i=0;i<state.numArrays();i++) {
572 outclassdefs.print(", ");
573 TypeDescriptor tdelement=arraytable[i].dereference();
574 if (tdelement.isArray()||tdelement.isClass())
575 outclassdefs.print("sizeof(void *)");
577 outclassdefs.print("sizeof("+tdelement.getSafeSymbol()+")");
581 outclassdefs.println("};");
584 /** Constructs params and temp objects for each method or task.
585 * These objects tell the compiler which temps need to be
588 private void generateTempStructs(FlatMethod fm) {
589 MethodDescriptor md=fm.getMethod();
590 TaskDescriptor task=fm.getTask();
592 ParamsObject objectparams=md!=null?new ParamsObject(md,tag++):new ParamsObject(task, tag++);
594 paramstable.put(md, objectparams);
596 paramstable.put(task, objectparams);
598 for(int i=0;i<fm.numParameters();i++) {
599 TempDescriptor temp=fm.getParameter(i);
600 TypeDescriptor type=temp.getType();
601 if ((type.isPtr()||type.isArray())&&GENERATEPRECISEGC)
602 objectparams.addPtr(temp);
604 objectparams.addPrim(temp);
607 TempObject objecttemps=md!=null?new TempObject(objectparams,md,tag++):new TempObject(objectparams, task, tag++);
609 tempstable.put(md, objecttemps);
611 tempstable.put(task, objecttemps);
613 for(Iterator nodeit=fm.getNodeSet().iterator();nodeit.hasNext();) {
614 FlatNode fn=(FlatNode)nodeit.next();
615 TempDescriptor[] writes=fn.writesTemps();
616 for(int i=0;i<writes.length;i++) {
617 TempDescriptor temp=writes[i];
618 TypeDescriptor type=temp.getType();
619 if ((type.isPtr()||type.isArray())&&GENERATEPRECISEGC)
620 objecttemps.addPtr(temp);
622 objecttemps.addPrim(temp);
627 private void generateLayoutStructs(PrintWriter output) {
628 Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
629 while(it.hasNext()) {
630 ClassDescriptor cn=(ClassDescriptor)it.next();
631 output.println("int "+cn.getSafeSymbol()+"_pointers[]={");
632 Iterator allit=cn.getFieldTable().getAllDescriptorsIterator();
634 while(allit.hasNext()) {
635 FieldDescriptor fd=(FieldDescriptor)allit.next();
636 TypeDescriptor type=fd.getType();
637 if (type.isPtr()||type.isArray())
641 allit=cn.getFieldTable().getAllDescriptorsIterator();
642 while(allit.hasNext()) {
643 FieldDescriptor fd=(FieldDescriptor)allit.next();
644 TypeDescriptor type=fd.getType();
645 if (type.isPtr()||type.isArray()) {
647 output.print("((int)&(((struct "+cn.getSafeSymbol() +" *)0)->"+fd.getSafeSymbol()+"))");
650 output.println("};");
652 output.println("int * pointerarray[]={");
653 boolean needcomma=false;
654 for(int i=0;i<state.numClasses();i++) {
655 ClassDescriptor cn=cdarray[i];
659 output.print(cn.getSafeSymbol()+"_pointers");
662 for(int i=0;i<state.numArrays();i++) {
664 output.println(", ");
665 TypeDescriptor tdelement=arraytable[i].dereference();
666 if (tdelement.isArray()||tdelement.isClass())
667 output.print("((int *)1)");
673 output.println("};");
675 output.println("int hasflags[]={");
676 for(int i=0;i<state.numClasses();i++) {
677 ClassDescriptor cn=cdarray[i];
679 output.println(", ");
686 output.println("};");
689 /** Print out table to give us supertypes */
690 private void generateSuperTypeTable(PrintWriter output) {
691 output.println("int supertypes[]={");
692 boolean needcomma=false;
693 for(int i=0;i<state.numClasses();i++) {
694 ClassDescriptor cn=cdarray[i];
698 if (cn.getSuperDesc()!=null) {
699 ClassDescriptor cdsuper=cn.getSuperDesc();
700 output.print(cdsuper.getId());
704 output.println("};");
707 /** Force consistent field ordering between inherited classes. */
709 private void printClassStruct(ClassDescriptor cn, PrintWriter classdefout) {
710 ClassDescriptor sp=cn.getSuperDesc();
712 printClassStruct(sp, classdefout);
714 if (!fieldorder.containsKey(cn)) {
715 Vector fields=new Vector();
716 fieldorder.put(cn,fields);
717 Iterator fieldit=cn.getFields();
718 while(fieldit.hasNext()) {
719 FieldDescriptor fd=(FieldDescriptor)fieldit.next();
720 if (sp==null||!sp.getFieldTable().contains(fd.getSymbol()))
724 Vector fields=(Vector)fieldorder.get(cn);
726 for(int i=0;i<fields.size();i++) {
727 FieldDescriptor fd=(FieldDescriptor)fields.get(i);
728 if (fd.getType().isClass()||fd.getType().isArray())
729 classdefout.println(" struct "+fd.getType().getSafeSymbol()+" * "+fd.getSafeSymbol()+";");
731 classdefout.println(" "+fd.getType().getSafeSymbol()+" "+fd.getSafeSymbol()+";");
736 /* Map flags to integers consistently between inherited
739 private void mapFlags(ClassDescriptor cn) {
740 ClassDescriptor sp=cn.getSuperDesc();
744 if (!flagorder.containsKey(cn)) {
745 Hashtable flags=new Hashtable();
746 flagorder.put(cn,flags);
748 Hashtable superflags=(Hashtable)flagorder.get(sp);
749 Iterator superflagit=superflags.keySet().iterator();
750 while(superflagit.hasNext()) {
751 FlagDescriptor fd=(FlagDescriptor)superflagit.next();
752 Integer number=(Integer)superflags.get(fd);
753 flags.put(fd, number);
754 if ((number.intValue()+1)>max)
755 max=number.intValue()+1;
759 Iterator flagit=cn.getFlags();
760 while(flagit.hasNext()) {
761 FlagDescriptor fd=(FlagDescriptor)flagit.next();
762 if (sp==null||!sp.getFlagTable().contains(fd.getSymbol()))
763 flags.put(fd, new Integer(max++));
769 /** This function outputs (1) structures that parameters are
770 * passed in (when PRECISE GC is enabled) and (2) function
771 * prototypes for the methods */
773 private void generateCallStructs(ClassDescriptor cn, PrintWriter classdefout, PrintWriter output, PrintWriter headersout) {
774 /* Output class structure */
775 classdefout.println("struct "+cn.getSafeSymbol()+" {");
776 classdefout.println(" int type;");
778 classdefout.println(" pthread_t tid;");
779 classdefout.println(" void * lockentry;");
780 classdefout.println(" int lockcount;");
784 classdefout.println(" int flag;");
785 classdefout.println(" void * flagptr;");
787 printClassStruct(cn, classdefout);
788 classdefout.println("};\n");
790 /* Cycle through methods */
791 Iterator methodit=cn.getMethods();
792 while(methodit.hasNext()) {
793 /* Classify parameters */
794 MethodDescriptor md=(MethodDescriptor)methodit.next();
795 FlatMethod fm=state.getMethodFlat(md);
796 generateTempStructs(fm);
798 ParamsObject objectparams=(ParamsObject) paramstable.get(md);
799 TempObject objecttemps=(TempObject) tempstable.get(md);
801 /* Output parameter structure */
802 if (GENERATEPRECISEGC) {
803 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params {");
804 output.println(" int size;");
805 output.println(" void * next;");
806 for(int i=0;i<objectparams.numPointers();i++) {
807 TempDescriptor temp=objectparams.getPointer(i);
808 output.println(" struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
810 output.println("};\n");
813 /* Output temp structure */
814 if (GENERATEPRECISEGC) {
815 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals {");
816 output.println(" int size;");
817 output.println(" void * next;");
818 for(int i=0;i<objecttemps.numPointers();i++) {
819 TempDescriptor temp=objecttemps.getPointer(i);
820 if (temp.getType().isNull())
821 output.println(" void * "+temp.getSafeSymbol()+";");
823 output.println(" struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
825 output.println("};\n");
828 /* Output method declaration */
829 if (md.getReturnType()!=null) {
830 if (md.getReturnType().isClass()||md.getReturnType().isArray())
831 headersout.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
833 headersout.print(md.getReturnType().getSafeSymbol()+" ");
835 //catch the constructor case
836 headersout.print("void ");
837 headersout.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
839 boolean printcomma=false;
840 if (GENERATEPRECISEGC) {
841 headersout.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
845 //output parameter list
846 for(int i=0;i<objectparams.numPrimitives();i++) {
847 TempDescriptor temp=objectparams.getPrimitive(i);
849 headersout.print(", ");
851 if (temp.getType().isClass()||temp.getType().isArray())
852 headersout.print("struct " + temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
854 headersout.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
856 headersout.println(");\n");
861 /** This function outputs (1) structures that parameters are
862 * passed in (when PRECISE GC is enabled) and (2) function
863 * prototypes for the tasks */
865 private void generateTaskStructs(PrintWriter output, PrintWriter headersout) {
866 /* Cycle through tasks */
867 Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
869 while(taskit.hasNext()) {
870 /* Classify parameters */
871 TaskDescriptor task=(TaskDescriptor)taskit.next();
872 FlatMethod fm=state.getMethodFlat(task);
873 generateTempStructs(fm);
875 ParamsObject objectparams=(ParamsObject) paramstable.get(task);
876 TempObject objecttemps=(TempObject) tempstable.get(task);
878 /* Output parameter structure */
879 if (GENERATEPRECISEGC) {
880 output.println("struct "+task.getSafeSymbol()+"_params {");
882 output.println(" int size;");
883 output.println(" void * next;");
884 for(int i=0;i<objectparams.numPointers();i++) {
885 TempDescriptor temp=objectparams.getPointer(i);
886 output.println(" struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
888 for(int i=0;i<fm.numTags();i++) {
889 TempDescriptor temp=fm.getTag(i);
890 output.println(" struct ___TagDescriptor___ * "+temp.getSafeSymbol()+";");
893 output.println("};\n");
894 if ((objectparams.numPointers()+fm.numTags())>maxtaskparams) {
895 maxtaskparams=objectparams.numPointers()+fm.numTags();
899 /* Output temp structure */
900 if (GENERATEPRECISEGC) {
901 output.println("struct "+task.getSafeSymbol()+"_locals {");
902 output.println(" int size;");
903 output.println(" void * next;");
904 for(int i=0;i<objecttemps.numPointers();i++) {
905 TempDescriptor temp=objecttemps.getPointer(i);
906 if (temp.getType().isNull())
907 output.println(" void * "+temp.getSafeSymbol()+";");
909 output.println(" struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
911 output.println("};\n");
914 /* Output task declaration */
915 headersout.print("void " + task.getSafeSymbol()+"(");
917 boolean printcomma=false;
918 if (GENERATEPRECISEGC) {
919 headersout.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
921 headersout.print("void * parameterarray[]");
922 headersout.println(");\n");
926 /** Generate code for flatmethod fm. */
928 private void generateFlatMethod(FlatMethod fm, PrintWriter output) {
929 MethodDescriptor md=fm.getMethod();
930 TaskDescriptor task=fm.getTask();
932 ClassDescriptor cn=md!=null?md.getClassDesc():null;
934 ParamsObject objectparams=(ParamsObject)paramstable.get(md!=null?md:task);
936 generateHeader(fm, md!=null?md:task,output);
938 TempObject objecttemp=(TempObject) tempstable.get(md!=null?md:task);
941 if (GENERATEPRECISEGC) {
943 output.print(" struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
945 output.print(" struct "+task.getSafeSymbol()+"_locals "+localsprefix+"={");
947 output.print(objecttemp.numPointers()+",");
948 output.print(paramsprefix);
949 for(int j=0;j<objecttemp.numPointers();j++)
950 output.print(", NULL");
951 output.println("};");
954 for(int i=0;i<objecttemp.numPrimitives();i++) {
955 TempDescriptor td=objecttemp.getPrimitive(i);
956 TypeDescriptor type=td.getType();
958 output.println(" void * "+td.getSafeSymbol()+";");
959 else if (type.isClass()||type.isArray())
960 output.println(" struct "+type.getSafeSymbol()+" * "+td.getSafeSymbol()+";");
962 output.println(" "+type.getSafeSymbol()+" "+td.getSafeSymbol()+";");
965 /* Generate labels first */
966 HashSet tovisit=new HashSet();
967 HashSet visited=new HashSet();
969 Hashtable nodetolabel=new Hashtable();
970 tovisit.add(fm.methodEntryNode());
971 FlatNode current_node=null;
974 //Node needs a label if it is
975 while(!tovisit.isEmpty()) {
976 FlatNode fn=(FlatNode)tovisit.iterator().next();
979 for(int i=0;i<fn.numNext();i++) {
980 FlatNode nn=fn.getNext(i);
983 nodetolabel.put(nn,new Integer(labelindex++));
985 if (!visited.contains(nn)&&!tovisit.contains(nn)) {
989 nodetolabel.put(nn,new Integer(labelindex++));
994 if (state.THREAD&&GENERATEPRECISEGC) {
995 output.println("checkcollect(&"+localsprefix+");");
998 //Do the actual code generation
999 tovisit=new HashSet();
1000 visited=new HashSet();
1001 tovisit.add(fm.methodEntryNode());
1002 while(current_node!=null||!tovisit.isEmpty()) {
1003 if (current_node==null) {
1004 current_node=(FlatNode)tovisit.iterator().next();
1005 tovisit.remove(current_node);
1007 visited.add(current_node);
1008 if (nodetolabel.containsKey(current_node))
1009 output.println("L"+nodetolabel.get(current_node)+":");
1010 if (state.INSTRUCTIONFAILURE) {
1012 output.println("if ((++instructioncount)>failurecount) {instructioncount=0;injectinstructionfailure();}");
1015 output.println("if ((--instructioncount)==0) injectinstructionfailure();");
1017 if (current_node.numNext()==0) {
1019 generateFlatNode(fm, current_node, output);
1020 if (current_node.kind()!=FKind.FlatReturnNode) {
1021 output.println(" return;");
1024 } else if(current_node.numNext()==1) {
1026 generateFlatNode(fm, current_node, output);
1027 FlatNode nextnode=current_node.getNext(0);
1028 if (visited.contains(nextnode)) {
1029 output.println("goto L"+nodetolabel.get(nextnode)+";");
1032 current_node=nextnode;
1033 } else if (current_node.numNext()==2) {
1036 generateFlatCondBranch(fm, (FlatCondBranch)current_node, "L"+nodetolabel.get(current_node.getNext(1)), output);
1037 if (!visited.contains(current_node.getNext(1)))
1038 tovisit.add(current_node.getNext(1));
1039 if (visited.contains(current_node.getNext(0))) {
1040 output.println("goto L"+nodetolabel.get(current_node.getNext(0))+";");
1043 current_node=current_node.getNext(0);
1044 } else throw new Error();
1048 output.println("}\n\n");
1051 /** Generate text string that corresponds to the Temp td. */
1052 private String generateTemp(FlatMethod fm, TempDescriptor td) {
1053 MethodDescriptor md=fm.getMethod();
1054 TaskDescriptor task=fm.getTask();
1055 TempObject objecttemps=(TempObject) tempstable.get(md!=null?md:task);
1057 if (objecttemps.isLocalPrim(td)||objecttemps.isParamPrim(td)) {
1058 return td.getSafeSymbol();
1061 if (objecttemps.isLocalPtr(td)) {
1062 return localsprefix+"."+td.getSafeSymbol();
1065 if (objecttemps.isParamPtr(td)) {
1066 return paramsprefix+"->"+td.getSafeSymbol();
1071 private void generateFlatNode(FlatMethod fm, FlatNode fn, PrintWriter output) {
1073 case FKind.FlatTagDeclaration:
1074 generateFlatTagDeclaration(fm, (FlatTagDeclaration) fn,output);
1076 case FKind.FlatCall:
1077 generateFlatCall(fm, (FlatCall) fn,output);
1079 case FKind.FlatFieldNode:
1080 generateFlatFieldNode(fm, (FlatFieldNode) fn,output);
1082 case FKind.FlatElementNode:
1083 generateFlatElementNode(fm, (FlatElementNode) fn,output);
1085 case FKind.FlatSetElementNode:
1086 generateFlatSetElementNode(fm, (FlatSetElementNode) fn,output);
1088 case FKind.FlatSetFieldNode:
1089 generateFlatSetFieldNode(fm, (FlatSetFieldNode) fn,output);
1092 generateFlatNew(fm, (FlatNew) fn,output);
1094 case FKind.FlatOpNode:
1095 generateFlatOpNode(fm, (FlatOpNode) fn,output);
1097 case FKind.FlatCastNode:
1098 generateFlatCastNode(fm, (FlatCastNode) fn,output);
1100 case FKind.FlatLiteralNode:
1101 generateFlatLiteralNode(fm, (FlatLiteralNode) fn,output);
1103 case FKind.FlatReturnNode:
1104 generateFlatReturnNode(fm, (FlatReturnNode) fn,output);
1107 output.println("/* nop */");
1109 case FKind.FlatBackEdge:
1110 if (state.THREAD&&GENERATEPRECISEGC) {
1111 output.println("checkcollect(&"+localsprefix+");");
1113 output.println("/* nop */");
1115 case FKind.FlatCheckNode:
1116 generateFlatCheckNode(fm, (FlatCheckNode) fn, output);
1118 case FKind.FlatFlagActionNode:
1119 generateFlatFlagActionNode(fm, (FlatFlagActionNode) fn, output);
1126 private void generateFlatCheckNode(FlatMethod fm, FlatCheckNode fcn, PrintWriter output) {
1128 if (state.CONSCHECK) {
1129 String specname=fcn.getSpec();
1130 String varname="repairstate___";
1131 output.println("{");
1132 output.println("struct "+specname+"_state * "+varname+"=allocate"+specname+"_state();");
1134 TempDescriptor[] temps=fcn.getTemps();
1135 String[] vars=fcn.getVars();
1136 for(int i=0;i<temps.length;i++) {
1137 output.println(varname+"->"+vars[i]+"=(int)"+generateTemp(fm, temps[i])+";");
1140 output.println("if (doanalysis"+specname+"("+varname+")) {");
1141 output.println("free"+specname+"_state("+varname+");");
1142 output.println("} else {");
1143 output.println("/* Bad invariant */");
1144 output.println("free"+specname+"_state("+varname+");");
1145 output.println("abort_task();");
1146 output.println("}");
1148 output.println("}");
1152 private void generateFlatCall(FlatMethod fm, FlatCall fc, PrintWriter output) {
1153 MethodDescriptor md=fc.getMethod();
1154 ParamsObject objectparams=(ParamsObject) paramstable.get(md);
1155 ClassDescriptor cn=md.getClassDesc();
1156 output.println("{");
1157 if (GENERATEPRECISEGC) {
1158 output.print(" struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
1160 output.print(objectparams.numPointers());
1161 // output.print(objectparams.getUID());
1162 output.print(", & "+localsprefix);
1163 if (fc.getThis()!=null) {
1165 output.print("(struct "+md.getThis().getType().getSafeSymbol() +" *)"+ generateTemp(fm,fc.getThis()));
1167 for(int i=0;i<fc.numArgs();i++) {
1168 VarDescriptor var=md.getParameter(i);
1169 TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1170 if (objectparams.isParamPtr(paramtemp)) {
1171 TempDescriptor targ=fc.getArg(i);
1173 output.print("(struct "+md.getParamType(i).getSafeSymbol() +" *)"+generateTemp(fm, targ));
1176 output.println("};");
1181 if (fc.getReturnTemp()!=null)
1182 output.print(generateTemp(fm,fc.getReturnTemp())+"=");
1184 /* Do we need to do virtual dispatch? */
1185 if (md.isStatic()||md.getReturnType()==null||singleCall(fc.getThis().getType().getClassDesc(),md)) {
1186 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
1190 if (md.getReturnType().isClass()||md.getReturnType().isArray())
1191 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1193 output.print(md.getReturnType().getSafeSymbol()+" ");
1194 output.print("(*)(");
1196 boolean printcomma=false;
1197 if (GENERATEPRECISEGC) {
1198 output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * ");
1203 for(int i=0;i<objectparams.numPrimitives();i++) {
1204 TempDescriptor temp=objectparams.getPrimitive(i);
1208 if (temp.getType().isClass()||temp.getType().isArray())
1209 output.print("struct " + temp.getType().getSafeSymbol()+" * ");
1211 output.print(temp.getType().getSafeSymbol());
1214 output.print("))virtualtable["+generateTemp(fm,fc.getThis())+"->type*"+maxcount+"+"+virtualcalls.getMethodNumber(md)+"])");
1218 boolean needcomma=false;
1219 if (GENERATEPRECISEGC) {
1220 output.print("&__parameterlist__");
1223 if (fc.getThis()!=null) {
1224 TypeDescriptor ptd=md.getThis().getType();
1225 if (ptd.isClass()&&!ptd.isArray())
1226 output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1227 output.print(generateTemp(fm,fc.getThis()));
1231 for(int i=0;i<fc.numArgs();i++) {
1232 VarDescriptor var=md.getParameter(i);
1233 TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1234 if (objectparams.isParamPrim(paramtemp)) {
1235 TempDescriptor targ=fc.getArg(i);
1239 TypeDescriptor ptd=md.getParamType(i);
1240 if (ptd.isClass()&&!ptd.isArray())
1241 output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1242 output.print(generateTemp(fm, targ));
1246 output.println(");");
1247 output.println(" }");
1250 private boolean singleCall(ClassDescriptor thiscd, MethodDescriptor md) {
1251 Set subclasses=typeutil.getSubClasses(thiscd);
1252 if (subclasses==null)
1254 for(Iterator classit=subclasses.iterator();classit.hasNext();) {
1255 ClassDescriptor cd=(ClassDescriptor)classit.next();
1256 Set possiblematches=cd.getMethodTable().getSet(md.getSymbol());
1257 for(Iterator matchit=possiblematches.iterator();matchit.hasNext();) {
1258 MethodDescriptor matchmd=(MethodDescriptor)matchit.next();
1259 if (md.matches(matchmd))
1266 private void generateFlatFieldNode(FlatMethod fm, FlatFieldNode ffn, PrintWriter output) {
1267 output.println(generateTemp(fm, ffn.getDst())+"="+ generateTemp(fm,ffn.getSrc())+"->"+ ffn.getField().getSafeSymbol()+";");
1270 private void generateFlatSetFieldNode(FlatMethod fm, FlatSetFieldNode fsfn, PrintWriter output) {
1271 if (fsfn.getField().getSymbol().equals("length")&&fsfn.getDst().getType().isArray())
1272 throw new Error("Can't set array length");
1273 output.println(generateTemp(fm, fsfn.getDst())+"->"+ fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc())+";");
1276 private void generateFlatElementNode(FlatMethod fm, FlatElementNode fen, PrintWriter output) {
1277 TypeDescriptor elementtype=fen.getSrc().getType().dereference();
1280 if (elementtype.isArray()||elementtype.isClass())
1283 type=elementtype.getSafeSymbol()+" ";
1285 if (fen.needsBoundsCheck()) {
1286 output.println("if ("+generateTemp(fm, fen.getIndex())+"< 0 || "+generateTemp(fm, fen.getIndex())+" >= "+generateTemp(fm,fen.getSrc()) + "->___length___)");
1287 output.println("failedboundschk();");
1290 output.println(generateTemp(fm, fen.getDst())+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc())+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex())+"];");
1293 private void generateFlatSetElementNode(FlatMethod fm, FlatSetElementNode fsen, PrintWriter output) {
1294 //TODO: need dynamic check to make sure this assignment is actually legal
1295 //Because Object[] could actually be something more specific...ie. Integer[]
1297 TypeDescriptor elementtype=fsen.getDst().getType().dereference();
1300 if (elementtype.isArray()||elementtype.isClass())
1303 type=elementtype.getSafeSymbol()+" ";
1305 if (fsen.needsBoundsCheck()) {
1306 output.println("if ("+generateTemp(fm, fsen.getIndex())+"< 0 || "+generateTemp(fm, fsen.getIndex())+" >= "+generateTemp(fm,fsen.getDst()) + "->___length___)");
1307 output.println("failedboundschk();");
1310 output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst())+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex())+"]="+generateTemp(fm,fsen.getSrc())+";");
1313 private void generateFlatNew(FlatMethod fm, FlatNew fn, PrintWriter output) {
1314 if (fn.getType().isArray()) {
1315 int arrayid=state.getArrayNumber(fn.getType())+state.numClasses();
1316 if (GENERATEPRECISEGC) {
1317 output.println(generateTemp(fm,fn.getDst())+"=allocate_newarray(&"+localsprefix+", "+arrayid+", "+generateTemp(fm, fn.getSize())+");");
1319 output.println(generateTemp(fm,fn.getDst())+"=allocate_newarray("+arrayid+", "+generateTemp(fm, fn.getSize())+");");
1322 if (GENERATEPRECISEGC) {
1323 output.println(generateTemp(fm,fn.getDst())+"=allocate_new(&"+localsprefix+", "+fn.getType().getClassDesc().getId()+");");
1325 output.println(generateTemp(fm,fn.getDst())+"=allocate_new("+fn.getType().getClassDesc().getId()+");");
1331 private void generateFlatTagDeclaration(FlatMethod fm, FlatTagDeclaration fn, PrintWriter output) {
1332 if (GENERATEPRECISEGC) {
1333 output.println(generateTemp(fm,fn.getDst())+"=allocate_tag(&"+localsprefix+", "+state.getTagId(fn.getType())+");");
1335 output.println(generateTemp(fm,fn.getDst())+"=allocate_tag("+state.getTagId(fn.getType())+");");
1339 private void generateFlatOpNode(FlatMethod fm, FlatOpNode fon, PrintWriter output) {
1341 if (fon.getRight()!=null)
1342 output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+fon.getOp().toString()+generateTemp(fm,fon.getRight())+";");
1343 else if (fon.getOp().getOp()==Operation.ASSIGN)
1344 output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+";");
1345 else if (fon.getOp().getOp()==Operation.UNARYPLUS)
1346 output.println(generateTemp(fm, fon.getDest())+" = "+generateTemp(fm, fon.getLeft())+";");
1347 else if (fon.getOp().getOp()==Operation.UNARYMINUS)
1348 output.println(generateTemp(fm, fon.getDest())+" = -"+generateTemp(fm, fon.getLeft())+";");
1349 else if (fon.getOp().getOp()==Operation.LOGIC_NOT)
1350 output.println(generateTemp(fm, fon.getDest())+" = !"+generateTemp(fm, fon.getLeft())+";");
1352 output.println(generateTemp(fm, fon.getDest())+fon.getOp().toString()+generateTemp(fm, fon.getLeft())+";");
1355 private void generateFlatCastNode(FlatMethod fm, FlatCastNode fcn, PrintWriter output) {
1356 /* TODO: Do type check here */
1357 if (fcn.getType().isArray()) {
1359 } else if (fcn.getType().isClass())
1360 output.println(generateTemp(fm,fcn.getDst())+"=(struct "+fcn.getType().getSafeSymbol()+" *)"+generateTemp(fm,fcn.getSrc())+";");
1362 output.println(generateTemp(fm,fcn.getDst())+"=("+fcn.getType().getSafeSymbol()+")"+generateTemp(fm,fcn.getSrc())+";");
1365 private void generateFlatLiteralNode(FlatMethod fm, FlatLiteralNode fln, PrintWriter output) {
1366 if (fln.getValue()==null)
1367 output.println(generateTemp(fm, fln.getDst())+"=0;");
1368 else if (fln.getType().getSymbol().equals(TypeUtil.StringClass)) {
1369 if (GENERATEPRECISEGC) {
1370 output.println(generateTemp(fm, fln.getDst())+"=NewString(&"+localsprefix+", \""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
1372 output.println(generateTemp(fm, fln.getDst())+"=NewString(\""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
1374 } else if (fln.getType().isBoolean()) {
1375 if (((Boolean)fln.getValue()).booleanValue())
1376 output.println(generateTemp(fm, fln.getDst())+"=1;");
1378 output.println(generateTemp(fm, fln.getDst())+"=0;");
1379 } else if (fln.getType().isChar()) {
1380 String st=FlatLiteralNode.escapeString(fln.getValue().toString());
1381 output.println(generateTemp(fm, fln.getDst())+"='"+st+"';");
1383 output.println(generateTemp(fm, fln.getDst())+"="+fln.getValue()+";");
1386 private void generateFlatReturnNode(FlatMethod fm, FlatReturnNode frn, PrintWriter output) {
1388 if (frn.getReturnTemp()!=null)
1389 output.println("return "+generateTemp(fm, frn.getReturnTemp())+";");
1391 output.println("return;");
1394 private void generateFlatCondBranch(FlatMethod fm, FlatCondBranch fcb, String label, PrintWriter output) {
1395 output.println("if (!"+generateTemp(fm, fcb.getTest())+") goto "+label+";");
1398 private void generateHeader(FlatMethod fm, Descriptor des, PrintWriter output) {
1400 ParamsObject objectparams=(ParamsObject)paramstable.get(des);
1401 MethodDescriptor md=null;
1402 TaskDescriptor task=null;
1403 if (des instanceof MethodDescriptor)
1404 md=(MethodDescriptor) des;
1406 task=(TaskDescriptor) des;
1408 ClassDescriptor cn=md!=null?md.getClassDesc():null;
1410 if (md!=null&&md.getReturnType()!=null) {
1411 if (md.getReturnType().isClass()||md.getReturnType().isArray())
1412 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1414 output.print(md.getReturnType().getSafeSymbol()+" ");
1416 //catch the constructor case
1417 output.print("void ");
1419 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1421 output.print(task.getSafeSymbol()+"(");
1423 boolean printcomma=false;
1424 if (GENERATEPRECISEGC) {
1426 output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1428 output.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
1434 for(int i=0;i<objectparams.numPrimitives();i++) {
1435 TempDescriptor temp=objectparams.getPrimitive(i);
1439 if (temp.getType().isClass()||temp.getType().isArray())
1440 output.print("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
1442 output.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
1444 output.println(") {");
1445 } else if (!GENERATEPRECISEGC) {
1446 /* Imprecise Task */
1447 output.println("void * parameterarray[]) {");
1448 /* Unpack variables */
1449 for(int i=0;i<objectparams.numPrimitives();i++) {
1450 TempDescriptor temp=objectparams.getPrimitive(i);
1451 output.println("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+"=parameterarray["+i+"];");
1453 for(int i=0;i<fm.numTags();i++) {
1454 TempDescriptor temp=fm.getTag(i);
1455 int offset=i+objectparams.numPrimitives();
1456 output.println("struct ___TagDescriptor___ * "+temp.getSafeSymbol()+"=parameterarray["+offset+"];");
1459 if ((objectparams.numPrimitives()+fm.numTags())>maxtaskparams)
1460 maxtaskparams=objectparams.numPrimitives()+fm.numTags();
1461 } else output.println(") {");
1464 public void generateFlatFlagActionNode(FlatMethod fm, FlatFlagActionNode ffan, PrintWriter output) {
1465 output.println("/* FlatFlagActionNode */");
1468 /* Process tag changes */
1469 Relation tagsettable=new Relation();
1470 Relation tagcleartable=new Relation();
1472 Iterator tagsit=ffan.getTempTagPairs();
1473 while (tagsit.hasNext()) {
1474 TempTagPair ttp=(TempTagPair) tagsit.next();
1475 TempDescriptor objtmp=ttp.getTemp();
1476 TagDescriptor tag=ttp.getTag();
1477 TempDescriptor tagtmp=ttp.getTagTemp();
1478 boolean tagstatus=ffan.getTagChange(ttp);
1480 tagsettable.put(objtmp, tagtmp);
1482 tagcleartable.put(objtmp, tagtmp);
1487 Hashtable flagandtable=new Hashtable();
1488 Hashtable flagortable=new Hashtable();
1490 /* Process flag changes */
1491 Iterator flagsit=ffan.getTempFlagPairs();
1492 while(flagsit.hasNext()) {
1493 TempFlagPair tfp=(TempFlagPair)flagsit.next();
1494 TempDescriptor temp=tfp.getTemp();
1495 Hashtable flagtable=(Hashtable)flagorder.get(temp.getType().getClassDesc());
1496 FlagDescriptor flag=tfp.getFlag();
1498 //Newly allocate objects that don't set any flags case
1499 if (flagortable.containsKey(temp)) {
1503 flagortable.put(temp,new Integer(mask));
1505 int flagid=1<<((Integer)flagtable.get(flag)).intValue();
1506 boolean flagstatus=ffan.getFlagChange(tfp);
1509 if (flagortable.containsKey(temp)) {
1510 mask=((Integer)flagortable.get(temp)).intValue();
1513 flagortable.put(temp,new Integer(mask));
1515 int mask=0xFFFFFFFF;
1516 if (flagandtable.containsKey(temp)) {
1517 mask=((Integer)flagandtable.get(temp)).intValue();
1519 mask&=(0xFFFFFFFF^flagid);
1520 flagandtable.put(temp,new Integer(mask));
1526 HashSet flagtagset=new HashSet();
1527 flagtagset.addAll(flagortable.keySet());
1528 flagtagset.addAll(flagandtable.keySet());
1529 flagtagset.addAll(tagsettable.keySet());
1530 flagtagset.addAll(tagcleartable.keySet());
1532 Iterator ftit=flagtagset.iterator();
1533 while(ftit.hasNext()) {
1534 TempDescriptor temp=(TempDescriptor)ftit.next();
1537 Set tagtmps=tagcleartable.get(temp);
1538 if (tagtmps!=null) {
1539 Iterator tagit=tagtmps.iterator();
1540 while(tagit.hasNext()) {
1541 TempDescriptor tagtmp=(TempDescriptor)tagit.next();
1542 if (GENERATEPRECISEGC)
1543 output.println("tagclear(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
1545 output.println("tagclear((struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
1549 tagtmps=tagsettable.get(temp);
1550 if (tagtmps!=null) {
1551 Iterator tagit=tagtmps.iterator();
1552 while(tagit.hasNext()) {
1553 TempDescriptor tagtmp=(TempDescriptor)tagit.next();
1554 if (GENERATEPRECISEGC)
1555 output.println("tagset(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
1557 output.println("tagset((struct ___Object___ *)"+generateTemp(fm, temp)+", "+generateTemp(fm,tagtmp)+");");
1562 int andmask=0xFFFFFFF;
1564 if (flagortable.containsKey(temp))
1565 ormask=((Integer)flagortable.get(temp)).intValue();
1566 if (flagandtable.containsKey(temp))
1567 andmask=((Integer)flagandtable.get(temp)).intValue();
1568 if (ffan.getTaskType()==FlatFlagActionNode.NEWOBJECT) {
1569 output.println("flagorandinit("+generateTemp(fm, temp)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
1571 output.println("flagorand("+generateTemp(fm, temp)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");