-/* loader.c - class loader header
+/* src/vm/loader.h - class loader header
- Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
- R. Grafl, A. Krall, C. Kruegel, C. Oates, R. Obermaisser,
- M. Probst, S. Ring, E. Steiner, C. Thalinger, D. Thuernbeck,
- P. Tomsich, J. Wenninger
+ Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates,
+ R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
+ C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
+ Institut f. Computersprachen - TU Wien
This file is part of CACAO.
Authors: Reinhard Grafl
- $Id: loader.h 669 2003-11-23 14:04:20Z edwin $
+ $Id: loader.h 3501 2005-10-26 20:27:15Z twisti $
*/
#ifndef _LOADER_H
#define _LOADER_H
-/************************* program switches ***********************************/
+#include <stdio.h>
-extern bool loadverbose; /* Print debug messages during loading */
-extern bool linkverbose;
-extern bool initverbose; /* Log class initialization */
-extern bool makeinitializations; /* Initialize classes automatically */
-extern bool getloadingtime;
-extern long int loadingtime; /* CPU time for class loading */
+/* forward typedefs ***********************************************************/
-extern list unlinkedclasses; /* List containing all unlinked classes */
-extern list linkedclasses; /* List containing all linked classes */
+typedef struct classbuffer classbuffer;
+typedef struct classpath_info classpath_info;
-/************************ prototypes ******************************************/
+#include "vm/global.h"
+#include "vm/utf8.h"
+#include "vm/references.h"
+#include "vm/descriptor.h"
+#include "vm/method.h"
-/* initialize laoder, load important systemclasses */
-void loader_init();
+#if defined(USE_ZLIB)
+# include "vm/unzip.h"
+#endif
-void suck_init(char *cpath);
-/* free resources */
-void loader_close();
+/* signed suck defines ********************************************************/
-/* load a class and all referenced classes */
-classinfo *loader_load(utf *topname);
+#define suck_s8(a) (s8) suck_u8((a))
+#define suck_s2(a) (s2) suck_u2((a))
+#define suck_s4(a) (s4) suck_u4((a))
+#define suck_s1(a) (s1) suck_u1((a))
-/* initializes all loaded classes */
-void loader_initclasses();
-void loader_compute_subclasses();
+/* constant pool entries *******************************************************
-/* retrieve constantpool element */
-voidptr class_getconstant(classinfo *class, u4 pos, u4 ctype);
+ All constant pool entries need a data structure which contain the entrys
+ value. In some cases this structure exist already, in the remaining cases
+ this structure must be generated:
-/* determine type of a constantpool element */
-u4 class_constanttype(classinfo *class, u4 pos);
+ kind structure generated?
+ ----------------------------------------------------------------------
+ CONSTANT_Class classinfo no XXX this will change
+ CONSTANT_Fieldref constant_FMIref yes
+ CONSTANT_Methodref constant_FMIref yes
+ CONSTANT_InterfaceMethodref constant_FMIref yes
+ CONSTANT_String unicode no
+ CONSTANT_Integer constant_integer yes
+ CONSTANT_Float constant_float yes
+ CONSTANT_Long constant_long yes
+ CONSTANT_Double constant_double yes
+ CONSTANT_NameAndType constant_nameandtype yes
+ CONSTANT_Utf8 unicode no
+ CONSTANT_UNUSED -
-/* search class for a field */
-fieldinfo *class_findfield(classinfo *c, utf *name, utf *desc);
+*******************************************************************************/
-/* search for a method with a specified name and descriptor */
-methodinfo *class_findmethod(classinfo *c, utf *name, utf *desc);
-methodinfo *class_resolvemethod(classinfo *c, utf *name, utf *dest);
+typedef struct { /* Integer */
+ s4 value;
+} constant_integer;
-/* search for a method with specified name and arguments (returntype ignored) */
-methodinfo *class_findmethod_approx(classinfo *c, utf *name, utf *desc);
-methodinfo *class_resolvemethod_approx(classinfo *c, utf *name, utf *dest);
+
+typedef struct { /* Float */
+ float value;
+} constant_float;
-bool class_issubclass(classinfo *sub, classinfo *super);
-/* call initializer of class */
-void class_init(classinfo *c);
+typedef struct { /* Long */
+ s8 value;
+} constant_long;
+
-void class_showconstanti(classinfo *c, int ii);
+typedef struct { /* Double */
+ double value;
+} constant_double;
-/* debug purposes */
-void class_showmethods (classinfo *c);
-void class_showconstantpool (classinfo *c);
-void print_arraydescriptor(FILE *file,arraydescriptor *desc);
-classinfo *loader_load(utf *topname);
+typedef struct { /* NameAndType (Field or Method) */
+ utf *name; /* field/method name */
+ utf *descriptor; /* field/method type descriptor string */
+} constant_nameandtype;
-/* set buffer for reading classdata */
-void classload_buffer(u1 *buf,int len);
-/* return the primitive class inidicated by the given signature character */
-classinfo *class_primitive_from_sig(char sig);
+/* classbuffer ****************************************************************/
-/* return the class indicated by the given descriptor */
-#define CLASSLOAD_SKIP 0
-#define CLASSLOAD_NEW 1
-#define CLASSLOAD_LOAD 2
-classinfo *class_from_descriptor(char *utf_ptr,char *end_ptr,char **next,int mode);
+struct classbuffer {
+ classinfo *class; /* pointer to classinfo structure */
+ u1 *data; /* pointer to byte code */
+ s4 size; /* size of the byte code */
+ u1 *pos; /* current read position */
+ char *path; /* path to file (for debugging) */
+};
-/* (used by class_new, don't use directly) */
-void class_new_array(classinfo *c);
-void class_link(classinfo *c);
+/* classpath_info *************************************************************/
-void field_display(fieldinfo *f);
+#define CLASSPATH_PATH 0
+#define CLASSPATH_ARCHIVE 1
-void method_display(methodinfo *m);
+struct classpath_info {
+#if defined(USE_THREADS)
+ /* Required for monitor locking on zip/jar files. */
+ java_objectheader header;
+#endif
+ s4 type;
+ char *path;
+ s4 pathlen;
+#if defined(USE_ZLIB)
+ unzFile uf;
+#endif
+ classpath_info *next;
+};
-utf* clinit_desc();
-utf* clinit_name();
-#endif /* _LOADER_H */
+/* export variables ***********************************************************/
+
+#if defined(USE_THREADS)
+extern int blockInts;
+#endif
+
+extern classpath_info *classpath_entries;
+
+
+/* function prototypes ********************************************************/
+
+/* initialize loader, load important systemclasses */
+bool loader_init(u1 *stackbottom);
+
+void suck_init(char *cpath);
+void loader_load_all_classes(void);
+void suck_stop(classbuffer *cb);
+inline bool check_classbuffer_size(classbuffer *cb, s4 len);
+
+inline u1 suck_u1(classbuffer *cb);
+inline u2 suck_u2(classbuffer *cb);
+inline u4 suck_u4(classbuffer *cb);
+
+/* free resources */
+void loader_close(void);
+
+/* class loading functions */
+classinfo *load_class_from_sysloader(utf *name);
+classinfo *load_class_from_classloader(utf *name, java_objectheader *cl);
+classinfo *load_class_bootstrap(utf *name);
+
+/* (don't use the following directly) */
+classinfo *load_class_from_classbuffer(classbuffer *cb);
+classinfo *load_newly_created_array(classinfo *c,java_objectheader *loader);
+
+/* return the primitive class inidicated by the given signature character */
+classinfo *class_primitive_from_sig(char sig);
+
+/* debug helpers */
+void fprintflags(FILE *fp, u2 f);
+void printflags(u2 f);
+
+#endif /* _LOADER_H */
/*
* These are local overrides for various environment variables in Emacs.
projects / cacao.git / blobdiff