1 /* vm/global.h - global definitions
3 Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates,
4 R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
5 C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
6 Institut f. Computersprachen - TU Wien
8 This file is part of CACAO.
10 This program is free software; you can redistribute it and/or
11 modify it under the terms of the GNU General Public License as
12 published by the Free Software Foundation; either version 2, or (at
13 your option) any later version.
15 This program is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 Contact: cacao@complang.tuwien.ac.at
27 Authors: Reinhard Grafl
35 $Id: global.h 1831 2004-12-29 13:47:33Z twisti $
47 /* resolve typedef cycles *****************************************************/
49 typedef struct utf utf;
50 typedef struct literalstring literalstring;
51 typedef struct java_objectheader java_objectheader;
52 typedef struct classinfo classinfo;
53 typedef struct _vftbl vftbl_t;
54 typedef u1* methodptr;
55 typedef struct fieldinfo fieldinfo;
56 typedef struct exceptiontable exceptiontable;
57 typedef struct methodinfo methodinfo;
58 typedef struct lineinfo lineinfo;
59 typedef struct arraydescriptor arraydescriptor;
62 /* additional data types ******************************************************/
64 typedef void *voidptr; /* generic pointer */
65 typedef void (*functionptr) (void); /* generic function pointer */
67 typedef int bool; /* boolean data type */
73 /* additional includes ********************************************************/
75 #include "toolbox/list.h"
76 #include "vm/jit/inline/sets.h"
79 /* define some cacao paths ****************************************************/
81 #define CACAO_LIBRARY_PATH "/jre/lib/"ARCH_DIR"/"
82 #define CACAO_RT_JAR_PATH "/jre/lib/rt.jar"
85 #define STATISTICS /* if enabled collects program statistics */
88 * SIZE_FROM_CLASSINFO toggles between the bitmap_based and the new method
89 * of determining the sizes of objects on the heap.
91 #define SIZE_FROM_CLASSINFO
94 * CACAO_TYPECHECK activates typechecking (part of bytecode verification)
96 #define CACAO_TYPECHECK
99 * TYPECHECK_STACK_COMPCAT activates full checking of computational
100 * categories for stack manipulations (POP,POP2,SWAP,DUP,DUP2,DUP_X1,
101 * DUP2_X1,DUP_X2,DUP2_X2).
103 #define TYPECHECK_STACK_COMPCAT
106 * Macros for configuration of the typechecking code
108 * TYPECHECK_STATISTICS activates gathering statistical information.
109 * TYPEINFO_DEBUG activates debug checks and debug helpers in typeinfo.c
110 * TYPECHECK_DEBUG activates debug checks in typecheck.c
111 * TYPEINFO_DEBUG_TEST activates the typeinfo test at startup.
112 * TYPECHECK_VERBOSE_IMPORTANT activates important debug messages
113 * TYPECHECK_VERBOSE activates all debug messages
115 #ifdef CACAO_TYPECHECK
116 /*#define TYPECHECK_STATISTICS
117 #define TYPEINFO_DEBUG
118 #define TYPECHECK_DEBUG
119 #define TYPEINFO_DEBUG_TEST
120 #define TYPECHECK_VERBOSE
121 #define TYPECHECK_VERBOSE_IMPORTANT*/
122 #if defined(TYPECHECK_VERBOSE) || defined(TYPECHECK_VERBOSE_IMPORTANT)
123 #define TYPECHECK_VERBOSE_OPT
128 /* immediate data union */
141 #define PRIMITIVETYPE_COUNT 9 /* number of primitive types */
143 /* CAUTION: Don't change the numerical values! These constants are
144 * used as indices into the primitive type table.
146 #define PRIMITIVETYPE_INT 0
147 #define PRIMITIVETYPE_LONG 1
148 #define PRIMITIVETYPE_FLOAT 2
149 #define PRIMITIVETYPE_DOUBLE 3
150 #define PRIMITIVETYPE_BYTE 4
151 #define PRIMITIVETYPE_CHAR 5
152 #define PRIMITIVETYPE_SHORT 6
153 #define PRIMITIVETYPE_BOOLEAN 7
154 #define PRIMITIVETYPE_VOID 8
157 #define MAX_ALIGN 8 /* most generic alignment for JavaVM values */
160 /* basic data types ***********************************************************/
162 /* CAUTION: jit/jit.h relies on these numerical values! */
163 #define TYPE_INT 0 /* the JavaVM types must numbered in the */
164 #define TYPE_LONG 1 /* same order as the ICMD_Ixxx to ICMD_Axxx */
165 #define TYPE_FLOAT 2 /* instructions (LOAD and STORE) */
166 #define TYPE_DOUBLE 3 /* integer, long, float, double, address */
167 #define TYPE_ADDRESS 4 /* all other types can be numbered arbitrarly */
172 /* Java class file constants **************************************************/
174 #define MAGIC 0xcafebabe
175 #define MINOR_VERSION 0
176 #define MAJOR_VERSION 48
178 #define CONSTANT_Class 7
179 #define CONSTANT_Fieldref 9
180 #define CONSTANT_Methodref 10
181 #define CONSTANT_InterfaceMethodref 11
182 #define CONSTANT_String 8
183 #define CONSTANT_Integer 3
184 #define CONSTANT_Float 4
185 #define CONSTANT_Long 5
186 #define CONSTANT_Double 6
187 #define CONSTANT_NameAndType 12
188 #define CONSTANT_Utf8 1
190 #define CONSTANT_UNUSED 0
192 #define ACC_PUBLIC 0x0001
193 #define ACC_PRIVATE 0x0002
194 #define ACC_PROTECTED 0x0004
195 #define ACC_STATIC 0x0008
196 #define ACC_FINAL 0x0010
197 #define ACC_SUPER 0x0020
198 #define ACC_SYNCHRONIZED 0x0020
199 #define ACC_VOLATILE 0x0040
200 #define ACC_TRANSIENT 0x0080
201 #define ACC_NATIVE 0x0100
202 #define ACC_INTERFACE 0x0200
203 #define ACC_ABSTRACT 0x0400
204 #define ACC_STRICT 0x0800
207 /* constant pool entries *******************************************************
209 All constant pool entries need a data structure which contain the entrys
210 value. In some cases this structure exist already, in the remaining cases
211 this structure must be generated:
213 kind structure generated?
214 ----------------------------------------------------------------------
215 CONSTANT_Class classinfo no
216 CONSTANT_Fieldref constant_FMIref yes
217 CONSTANT_Methodref constant_FMIref yes
218 CONSTANT_InterfaceMethodref constant_FMIref yes
219 CONSTANT_String unicode no
220 CONSTANT_Integer constant_integer yes
221 CONSTANT_Float constant_float yes
222 CONSTANT_Long constant_long yes
223 CONSTANT_Double constant_double yes
224 CONSTANT_NameAndType constant_nameandtype yes
225 CONSTANT_Utf8 unicode no
228 *******************************************************************************/
230 /* data structures for hashtables ********************************************
233 All utf-symbols, javastrings and classes are stored in global hashtables,
234 so every symbol exists only once. Equal symbols have identical pointers.
235 The functions for adding hashtable elements search the table for the
236 element with the specified name/text and return it on success. Otherwise a
237 new hashtable element is created.
239 The hashtables use external linking for handling collisions. The hashtable
240 structure contains a pointer <ptr> to the array of hashtable slots. The
241 number of hashtable slots and therefore the size of this array is specified
242 by the element <size> of hashtable structure. <entries> contains the number
243 of all hashtable elements stored in the table, including those in the
245 The hashtable element structures (utf, literalstring, classinfo) contain
246 both a pointer to the next hashtable element as a link for the external hash
247 chain and the key of the element. The key is computed from the text of
248 the string or the classname by using up to 8 characters.
250 If the number of entries in the hashtable exceeds twice the size of the
251 hashtableslot-array it is supposed that the average length of the
252 external chains has reached a value beyond 2. Therefore the functions for
253 adding hashtable elements (utf_new, class_new, literalstring_new) double
254 the hashtableslot-array. In this restructuring process all elements have
255 to be inserted into the new hashtable and new external chains must be built.
258 example for the layout of a hashtable:
260 hashtable.ptr--> +-------------------+
264 +-------------------+ +-------------------+ +-------------------+
265 | hashtable element |-->| hashtable element |-->| hashtable element |-->NULL
266 +-------------------+ +-------------------+ +-------------------+
267 | hashtable element |
268 +-------------------+ +-------------------+
269 | hashtable element |-->| hashtable element |-->NULL
270 +-------------------+ +-------------------+
271 | hashtable element |-->NULL
272 +-------------------+
276 +-------------------+
281 /* data structure for utf8 symbols ********************************************/
284 utf *hashlink; /* link for external hash chain */
285 int blength; /* text length in bytes */
286 char *text; /* pointer to text */
290 /* data structure of internal javastrings stored in global hashtable **********/
292 struct literalstring {
293 literalstring *hashlink; /* link for external hash chain */
294 java_objectheader *string;
298 /* data structure for storing information needed for a stacktrace across native functions*/
300 typedef struct native_stackframeinfo native_stackframeinfo;
302 struct native_stackframeinfo {
303 void *oldThreadspecificHeadValue;
304 void **addressOfThreadspecificHead;
309 void *beginOfJavaStackframe; /*only used if != 0*/
310 void *returnToFromNative;
313 void *returnFromNative;
314 void *addrReturnFromNative;
316 struct native_stackframeinfo *next;
317 struct native_stackframeinfo *prev;
322 typedef struct stacktraceelement stacktraceelement;
324 struct stacktraceelement {
334 typedef struct stackTraceBuffer stackTraceBuffer;
336 struct stackTraceBuffer {
338 stacktraceelement *start;
345 /* data structure for calls from c code to java methods */
347 struct jni_callblock {
352 typedef struct jni_callblock jni_callblock;
355 /* data structure for accessing hashtables ************************************/
359 u4 entries; /* number of entries in the table */
360 void **ptr; /* pointer to hashtable */
364 /* data structures of remaining constant pool entries *************************/
366 typedef struct { /* Fieldref, Methodref and InterfaceMethodref */
367 classinfo *class; /* class containing this field/method/interface */
368 utf *name; /* field/method/interface name */
369 utf *descriptor; /* field/method/interface type descriptor string */
373 typedef struct { /* Integer */
378 typedef struct { /* Float */
383 typedef struct { /* Long */
388 typedef struct { /* Double */
393 typedef struct { /* NameAndType (Field or Method) */
394 utf *name; /* field/method name */
395 utf *descriptor; /* field/method type descriptor string */
396 } constant_nameandtype;
399 /* data structures of the runtime system **************************************/
401 /* objects *********************************************************************
403 All objects (and arrays) which resides on the heap need the following
404 header at the beginning of the data structure.
407 struct java_objectheader { /* header for all objects */
408 vftbl_t *vftbl; /* pointer to virtual function table */
409 #if defined(USE_THREADS) && defined(NATIVE_THREADS)
416 /* arrays **********************************************************************
418 All arrays are objects (they need the object header with a pointer
419 to a vftbl (array class table). There is one class for each array
420 type. The array type is described by an arraydescriptor struct
421 which is referenced by the vftbl.
424 /* CAUTION: Don't change the numerical values! These constants (with
425 * the exception of ARRAYTYPE_OBJECT) are used as indices in the
426 * primitive type table.
428 #define ARRAYTYPE_INT PRIMITIVETYPE_INT
429 #define ARRAYTYPE_LONG PRIMITIVETYPE_LONG
430 #define ARRAYTYPE_FLOAT PRIMITIVETYPE_FLOAT
431 #define ARRAYTYPE_DOUBLE PRIMITIVETYPE_DOUBLE
432 #define ARRAYTYPE_BYTE PRIMITIVETYPE_BYTE
433 #define ARRAYTYPE_CHAR PRIMITIVETYPE_CHAR
434 #define ARRAYTYPE_SHORT PRIMITIVETYPE_SHORT
435 #define ARRAYTYPE_BOOLEAN PRIMITIVETYPE_BOOLEAN
436 #define ARRAYTYPE_OBJECT PRIMITIVETYPE_VOID /* don't use as index! */
438 typedef struct java_arrayheader { /* header for all arrays */
439 java_objectheader objheader; /* object header */
440 s4 size; /* array size */
441 #ifdef SIZE_FROM_CLASSINFO
442 s4 alignedsize; /* phil */
448 /* structs for all kinds of arrays ********************************************/
450 typedef struct java_chararray {
451 java_arrayheader header;
455 typedef struct java_floatheader {
456 java_arrayheader header;
460 typedef struct java_doublearray {
461 java_arrayheader header;
465 /* booleanarray and bytearray need identical memory layout (access methods
466 use the same machine code */
468 typedef struct java_booleanarray {
469 java_arrayheader header;
473 typedef struct java_bytearray {
474 java_arrayheader header;
478 typedef struct java_shortarray {
479 java_arrayheader header;
483 typedef struct java_intarray {
484 java_arrayheader header;
488 typedef struct java_longarray {
489 java_arrayheader header;
493 /* objectarray and arrayarray need identical memory layout (access methods
494 use the same machine code */
496 typedef struct java_objectarray {
497 java_arrayheader header;
498 java_objectheader *data[1];
502 /* structure for primitive classes ********************************************/
504 typedef struct primitivetypeinfo {
505 classinfo *class_wrap; /* class for wrapping primitive type */
506 classinfo *class_primitive; /* primitive class */
507 char *wrapname; /* name of class for wrapping */
508 char typesig; /* one character type signature */
509 char *name; /* name of primitive class */
510 char *arrayname; /* name of primitive array class */
511 classinfo *arrayclass; /* primitive array class */
512 vftbl_t *arrayvftbl; /* vftbl of primitive array class */
516 /* field, method and class structures *****************************************/
518 typedef struct xtafldinfo {
520 classinfo *fldClassType;
521 classSet *XTAclassSet; /* field class type set */
525 /* fieldinfo ******************************************************************/
527 struct fieldinfo { /* field of a class */
528 s4 flags; /* ACC flags */
529 s4 type; /* basic data type */
530 utf *name; /* name of field */
531 utf *descriptor; /* JavaVM descriptor string of field */
533 s4 offset; /* offset from start of object (instance variables) */
535 imm_union value; /* storage for static values (class variables) */
537 classinfo *class; /* needed by typechecker. Could be optimized */
538 /* away by using constant_FMIref instead of */
539 /* fieldinfo throughout the compiler. */
545 /* exceptiontable *************************************************************/
547 struct exceptiontable { /* exceptiontable entry in a method */
548 s4 startpc; /* start pc of guarded area (inclusive) */
549 struct basicblock *start;
551 s4 endpc; /* end pc of guarded area (exklusive) */
552 struct basicblock *end;
554 s4 handlerpc; /* pc of exception handler */
555 struct basicblock *handler;
557 classinfo *catchtype; /* catchtype of exception (NULL == catchall) */
558 exceptiontable *next; /* used to build a list of exception when */
559 /* loops are copied */
560 exceptiontable *down; /* instead of the old array, a list is used */
564 /* methodinfo static info ****************************************************/
566 typedef struct xtainfo {
567 s4 XTAmethodUsed; /* XTA if used in callgraph - not used /used */
568 classSet *XTAclassSet; /* method class type set */
569 /*classSet *PartClassSet */ /* method class type set */
571 classSetNode *paramClassSet; /* cone set of methods parameters */
573 methSet *calls; /* methods this method calls */
574 methSet *calledBy; /* methods that call this method */
575 methSet *marked; /*not in Dez*/ /* methods that marked by this method */
577 fldSet *fldsUsed; /* fields used by this method */
578 /*methSetNode *interfaceCalls*/ /* methods this method calls as interface */
579 bool chgdSinceLastParse; /* Changed since last parse ? */
583 /* lineinfo *****************************************************************/
591 /* methodinfo *****************************************************************/
593 struct methodinfo { /* method structure */
594 java_objectheader header; /* we need this in jit's monitorenter */
595 s4 flags; /* ACC flags */
596 utf *name; /* name of method */
597 utf *descriptor; /* JavaVM descriptor string of method */
598 s4 returntype; /* only temporary valid, return type */
599 classinfo *returnclass; /* pointer to classinfo for the rtn type */ /*XTA*/
600 s4 paramcount; /* only temporary valid, parameter count */
601 u1 *paramtypes; /* only temporary valid, parameter types */
602 classinfo **paramclass; /* pointer to classinfo for a parameter */ /*XTA*/
604 bool isleafmethod; /* does method call subroutines */
606 classinfo *class; /* class, the method belongs to */
607 s4 vftblindex; /* index of method in virtual function */
608 /* table (if it is a virtual method) */
609 s4 maxstack; /* maximum stack depth of method */
610 s4 maxlocals; /* maximum number of local variables */
611 s4 jcodelength; /* length of JavaVM code */
612 u1 *jcode; /* pointer to JavaVM code */
614 s4 basicblockcount; /* number of basic blocks */
615 struct basicblock *basicblocks; /* points to basic block array */
616 s4 *basicblockindex; /* a table which contains for every byte */
617 /* of JavaVM code a basic block index if */
618 /* at this byte is the start of a basic */
621 s4 instructioncount; /* number of JavaVM instructions */
622 struct instruction *instructions; /* points to intermediate code instructions */
624 s4 stackcount; /* number of stack elements */
625 struct stackelement *stack; /* points to intermediate code instructions */
627 s4 exceptiontablelength;/* exceptiontable length */
628 exceptiontable *exceptiontable; /* the exceptiontable */
630 u2 thrownexceptionscount;/* number of exceptions attribute */
631 classinfo **thrownexceptions; /* checked exceptions a method may throw */
633 u2 linenumbercount; /* number of linenumber attributes */
634 lineinfo *linenumbers; /* array of lineinfo items */
636 int c_debug_nr; /* a counter to number all BB with an */
639 u1 *stubroutine; /* stub for compiling or calling natives */
640 s4 mcodelength; /* legth of generated machine code */
641 functionptr mcode; /* pointer to machine code */
642 functionptr entrypoint; /* entry point in machine code */
647 s4 methodUsed; /* marked (might be used later) /not used /used */
648 s4 monoPoly; /* call is mono or poly or unknown */ /*RT stats */
649 /* should # method def'd and used be kept after static parse (will it be used?) */
652 s4 nativelyoverloaded; /* used in header.c and only valid there */
656 /* innerclassinfo *************************************************************/
658 typedef struct innerclassinfo {
659 classinfo *inner_class; /* inner class pointer */
660 classinfo *outer_class; /* outer class pointer */
661 utf *name; /* innerclass name */
662 s4 flags; /* ACC flags */
666 /* classinfo ******************************************************************/
668 struct classinfo { /* class structure */
669 java_objectheader header; /* classes are also objects */
670 java_objectarray* signers;
671 struct java_security_ProtectionDomain* pd;
672 struct java_lang_VMClass* vmClass;
673 struct java_lang_reflect_Constructor* constructor;
675 s4 initializing_thread; /* gnu classpath */
676 s4 erroneous_state; /* gnu classpath */
677 struct gnu_classpath_RawData* vmData; /* gnu classpath */
679 s4 flags; /* ACC flags */
680 utf *name; /* class name */
682 s4 cpcount; /* number of entries in constant pool */
683 u1 *cptags; /* constant pool tags */
684 voidptr *cpinfos; /* pointer to constant pool info structures */
686 classinfo *super; /* super class pointer */
687 classinfo *sub; /* sub class pointer */
688 classinfo *nextsub; /* pointer to next class in sub class list */
690 s4 interfacescount; /* number of interfaces */
691 classinfo **interfaces; /* pointer to interfaces */
693 s4 fieldscount; /* number of fields */
694 fieldinfo *fields; /* field table */
696 s4 methodscount; /* number of methods */
697 methodinfo *methods; /* method table */
699 listnode listnode; /* linkage */
701 bool initialized; /* true, if class already initialized */
702 bool initializing; /* flag for the compiler */
703 bool loaded; /* true, if class already loaded */
704 bool linked; /* true, if class already linked */
705 s4 index; /* hierarchy depth (classes) or index */
707 s4 instancesize; /* size of an instance of this class */
708 #ifdef SIZE_FROM_CLASSINFO
709 s4 alignedsize; /* size of an instance, aligned to the */
710 /* allocation size on the heap */
713 vftbl_t *vftbl; /* pointer to virtual function table */
715 methodinfo *finalizer; /* finalizer method */
717 u2 innerclasscount; /* number of inner classes */
718 innerclassinfo *innerclass;
720 classinfo *hashlink; /* link for external hash chain */
721 bool classvftbl; /* has its own copy of the Class vtbl */
723 s4 classUsed; /* 0= not used 1 = used CO-RT */
725 classSetNode *impldBy; /* implemented by class set */
726 utf *packagename; /* full name of the package */
727 utf *sourcefile; /* classfile name containing this class */
728 java_objectheader *classloader; /* NULL for bootstrap classloader */
731 /* check if class is an array class. Only use for linked classes! */
732 #define CLASS_IS_ARRAY(clsinfo) ((clsinfo)->vftbl->arraydesc != NULL)
735 /* virtual function table ******************************************************
737 The vtbl has a bidirectional layout with open ends at both sides.
738 interfacetablelength gives the number of entries of the interface table at
739 the start of the vftbl. The vftbl pointer points to &interfacetable[0].
740 vftbllength gives the number of entries of table at the end of the vftbl.
742 runtime type check (checkcast):
744 Different methods are used for runtime type check depending on the
745 argument of checkcast/instanceof.
747 A check against a class is implemented via relative numbering on the class
748 hierachy tree. The tree is numbered in a depth first traversal setting
749 the base field and the diff field. The diff field gets the result of
750 (high - base) so that a range check can be implemented by an unsigned
751 compare. A sub type test is done by checking the inclusion of base of
752 the sub class in the range of the superclass.
754 A check against an interface is implemented via the interfacevftbl. If the
755 interfacevftbl contains a nonnull value a class is a subclass of this
760 Like standard virtual methods interface methods are called using
761 virtual function tables. All interfaces are numbered sequentially
762 (starting with zero). For each class there exist an interface table
763 of virtual function tables for each implemented interface. The length
764 of the interface table is determined by the highest number of an
765 implemented interface.
767 The following example assumes a class which implements interface 0 and 3:
769 interfacetablelength = 4
772 +-----------+ | method 2 |---> method z
773 | class | | method 1 |---> method y
774 +-----------+ | method 0 |---> method x
775 | ivftbl 0 |----------> +----------+
776 vftblptr ---> +-----------+
777 | ivftbl -1 |--> NULL +----------+
778 | ivftbl -2 |--> NULL | method 1 |---> method x
779 | ivftbl -3 |-----+ | method 0 |---> method a
780 +-----------+ +----> +----------+
787 interfacevftbllength ---> +---------------+
789 *******************************************************************************/
792 methodptr *interfacetable[1]; /* interface table (access via macro) */
794 classinfo *class; /* class, the vtbl belongs to */
796 arraydescriptor *arraydesc; /* for array classes, otherwise NULL */
798 s4 vftbllength; /* virtual function table length */
799 s4 interfacetablelength; /* interface table length */
801 s4 baseval; /* base for runtime type check */
802 /* (-index for interfaces) */
803 s4 diffval; /* high - base for runtime type check */
805 s4 *interfacevftbllength; /* length of interface vftbls */
807 methodptr table[1]; /* class vftbl */
810 #define VFTBLINTERFACETABLE(v,i) (v)->interfacetable[-i]
813 /* arraydescriptor ************************************************************
815 For every array class an arraydescriptor is allocated which
816 describes the array class.
817 The arraydescriptor is referenced from the vftbl of the array
820 *******************************************************************************/
822 struct arraydescriptor {
823 vftbl_t *componentvftbl; /* vftbl of the component type, NULL for primit. */
824 vftbl_t *elementvftbl; /* vftbl of the element type, NULL for primitive */
825 s2 arraytype; /* ARRAYTYPE_* constant */
826 s2 dimension; /* dimension of the array (always >= 1) */
827 s4 dataoffset; /* offset of the array data from object pointer */
828 s4 componentsize; /* size of a component in bytes */
829 s2 elementtype; /* ARRAYTYPE_* constant */
833 /* flag variables *************************************************************/
835 extern bool cacao_initializing;
837 #ifdef TYPECHECK_VERBOSE_OPT
838 extern bool typecheckverbose;
841 /*extern int pClassHeir;*/
842 /*extern int pCallgraph;*/
843 /*extern int pOpcodes;*/
844 /*extern int pStats;*/
846 /*extern void RT_jit_parse(methodinfo *m);*/
849 /* table of primitive types ***************************************************/
851 /* This array can be indexed by the PRIMITIVETYPE_ and ARRAYTYPE_
852 * constants (except ARRAYTYPE_OBJECT).
854 extern primitivetypeinfo primitivetype_table[PRIMITIVETYPE_COUNT];
857 /* macros for descriptor parsing **********************************************/
859 /* SKIP_FIELDDESCRIPTOR:
860 * utf_ptr must point to the first character of a field descriptor.
861 * After the macro call utf_ptr points to the first character after
862 * the field descriptor.
864 * CAUTION: This macro does not check for an unexpected end of the
865 * descriptor. Better use SKIP_FIELDDESCRIPTOR_SAFE.
867 #define SKIP_FIELDDESCRIPTOR(utf_ptr) \
868 do { while (*(utf_ptr)=='[') (utf_ptr)++; \
869 if (*(utf_ptr)++=='L') \
870 while(*(utf_ptr)++ != ';') /* skip */; } while(0)
872 /* SKIP_FIELDDESCRIPTOR_SAFE:
873 * utf_ptr must point to the first character of a field descriptor.
874 * After the macro call utf_ptr points to the first character after
875 * the field descriptor.
878 * utf_ptr....points to first char of descriptor
879 * end_ptr....points to first char after the end of the string
880 * errorflag..must be initialized (to false) by the caller!
882 * utf_ptr....points to first char after the descriptor
883 * errorflag..set to true if the string ended unexpectedly
885 #define SKIP_FIELDDESCRIPTOR_SAFE(utf_ptr,end_ptr,errorflag) \
886 do { while ((utf_ptr) != (end_ptr) && *(utf_ptr)=='[') (utf_ptr)++; \
887 if ((utf_ptr) == (end_ptr)) \
888 (errorflag) = true; \
890 if (*(utf_ptr)++=='L') { \
891 while((utf_ptr) != (end_ptr) && *(utf_ptr)++ != ';') \
893 if ((utf_ptr)[-1] != ';') \
894 (errorflag) = true; }} while(0)
897 /* Synchronization ************************************************************/
899 #if defined(USE_THREADS) && defined(NATIVE_THREADS)
902 void compiler_lock();
903 void compiler_unlock();
906 #endif /* _GLOBAL_H */
910 * These are local overrides for various environment variables in Emacs.
911 * Please do not remove this and leave it at the end of the file, where
912 * Emacs will automagically detect them.
913 * ---------------------------------------------------------------------
916 * indent-tabs-mode: t