-/* loader.c - class loader functions
+/* vm/loader.c - class loader functions
- 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.
Contact: cacao@complang.tuwien.ac.at
Authors: Reinhard Grafl
+
Changes: Andreas Krall
Roman Obermaiser
Mark Probst
+ Edwin Steiner
+ Christian Thalinger
- $Id: loader.c 673 2003-11-23 22:14:35Z jowenn $
+ $Id: loader.c 1735 2004-12-07 14:33:27Z twisti $
*/
+#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <sys/stat.h>
-#include "global.h"
-#include "loader.h"
-#include "native.h"
-#include "tables.h"
-#include "builtin.h"
-#include "jit.h"
-#include "asmpart.h"
-#include "toolbox/memory.h"
-#include "toolbox/loging.h"
-#include "threads/thread.h"
-#include <sys/stat.h>
-#ifdef USE_ZLIB
-#include "unzip.h"
+#include "mm/memory.h"
+#include "native/native.h"
+#include "native/include/java_lang_Throwable.h"
+
+#if defined(USE_THREADS)
+# if defined(NATIVE_THREADS)
+# include "threads/native/threads.h"
+# else
+# include "threads/green/threads.h"
+# include "threads/green/locks.h"
+# endif
+#endif
+
+#include "toolbox/logging.h"
+#include "vm/exceptions.h"
+#include "vm/builtin.h"
+#include "vm/global.h"
+#include "vm/loader.h"
+#include "vm/options.h"
+#include "vm/statistics.h"
+#include "vm/tables.h"
+
+#if defined(USE_ZLIB)
+# include "vm/unzip.h"
#endif
+#include "vm/jit/asmpart.h"
+#include "vm/jit/jit.h"
+
+
#undef JOWENN_DEBUG
#undef JOWENN_DEBUG1
#undef JOWENN_DEBUG2
/* global variables ***********************************************************/
-bool opt_rt = false; /* true if RTA parse should be used RT-CO */
-bool opt_xta = false; /* true if XTA parse should be used XTA-CO */
-bool opt_vta = false; /* true if VTA parse should be used VTA-CO */
-
-int count_class_infos = 0; /* variables for measurements */
-int count_const_pool_len = 0;
-int count_vftbl_len = 0;
-int count_all_methods = 0;
-int count_vmcode_len = 0;
-int count_extable_len = 0;
-int count_class_loads = 0;
-int count_class_inits = 0;
-
-bool loadverbose = false; /* switches for debug messages */
-bool linkverbose = false;
-bool initverbose = false;
-
-bool makeinitializations = true;
-
-bool getloadingtime = false; /* to measure the runtime */
-long int loadingtime = 0;
-
-static s4 interfaceindex; /* sequential numbering of interfaces */
-
-list unloadedclasses; /* list of all referenced but not loaded classes */
-list unlinkedclasses; /* list of all loaded but not linked classes */
-list linkedclasses; /* list of all completely linked classes */
+static s4 interfaceindex; /* sequential numbering of interfaces */
+static s4 classvalue;
/* utf-symbols for pointer comparison of frequently used strings */
-static utf *utf_innerclasses; /* InnerClasses */
-static utf *utf_constantvalue; /* ConstantValue */
-static utf *utf_code; /* Code */
-static utf *utf_finalize; /* finalize */
-static utf *utf_fidesc; /* ()V changed */
-static utf *utf_clinit; /* <clinit> */
-static utf *utf_initsystemclass; /* initializeSystemClass */
-static utf *utf_systemclass; /* java/lang/System */
-static utf *utf_vmclassloader; /*java/lang/VMClassLoader*/
-static utf *utf_vmclass; /*java/lang/VMClassLoader*/
+static utf *utf_innerclasses; /* InnerClasses */
+static utf *utf_constantvalue; /* ConstantValue */
+static utf *utf_code; /* Code */
+static utf *utf_exceptions; /* Exceptions */
+static utf *utf_linenumbertable; /* LineNumberTable */
+static utf *utf_sourcefile; /* SourceFile */
+static utf *utf_finalize; /* finalize */
+static utf *utf_fidesc; /* ()V changed */
+static utf *utf_init; /* <init> */
+static utf *utf_clinit; /* <clinit> */
+static utf *utf_initsystemclass; /* initializeSystemClass */
+static utf *utf_systemclass; /* java/lang/System */
+static utf *utf_vmclassloader; /* java/lang/VMClassLoader */
+static utf *utf_vmclass; /* java/lang/VMClassLoader */
static utf *utf_initialize;
static utf *utf_initializedesc;
+static utf *utf_java_lang_Object; /* java/lang/Object */
-
-static unzFile uf=0;
-
+utf *utf_fillInStackTrace_name;
+utf *utf_fillInStackTrace_desc;
utf* clinit_desc(){
return utf_fidesc;
utf* clinit_name(){
return utf_clinit;
}
+
+
/* important system classes ***************************************************/
classinfo *class_java_lang_Object;
classinfo *class_java_lang_String;
-
-classinfo *class_java_lang_Throwable;
classinfo *class_java_lang_Cloneable;
classinfo *class_java_io_Serializable;
/* Pseudo classes for the typechecker */
classinfo *pseudo_class_Arraystub = NULL;
classinfo *pseudo_class_Null = NULL;
-vftbl *pseudo_class_Arraystub_vftbl = NULL;
+classinfo *pseudo_class_New = NULL;
+vftbl_t *pseudo_class_Arraystub_vftbl = NULL;
+
+utf *array_packagename = NULL;
+
-/* stefan */
-/* These are made static so they cannot be used for throwing in native */
-/* functions. */
-static classinfo *class_java_lang_ClassCastException;
-static classinfo *class_java_lang_NullPointerException;
-static classinfo *class_java_lang_ArrayIndexOutOfBoundsException;
-static classinfo *class_java_lang_NegativeArraySizeException;
-static classinfo *class_java_lang_OutOfMemoryError;
-static classinfo *class_java_lang_ArithmeticException;
-static classinfo *class_java_lang_ArrayStoreException;
-static classinfo *class_java_lang_ThreadDeath;
+/********************************************************************
+ list of classpath entries (either filesystem directories or
+ ZIP/JAR archives
+********************************************************************/
-static methodinfo method_clone_array;
+static classpath_info *classpath_entries = NULL;
-static int loader_inited = 0;
/******************************************************************************
* by the ARRAYTYPE_ constants (expcept ARRAYTYPE_OBJECT).
*/
primitivetypeinfo primitivetype_table[PRIMITIVETYPE_COUNT] = {
- { NULL, NULL, "java/lang/Integer", 'I', "int" , "[I", NULL, NULL },
- { NULL, NULL, "java/lang/Long", 'J', "long" , "[J", NULL, NULL },
- { NULL, NULL, "java/lang/Float", 'F', "float" , "[F", NULL, NULL },
- { NULL, NULL, "java/lang/Double", 'D', "double" , "[D", NULL, NULL },
- { NULL, NULL, "java/lang/Byte", 'B', "byte" , "[B", NULL, NULL },
- { NULL, NULL, "java/lang/Character", 'C', "char" , "[C", NULL, NULL },
- { NULL, NULL, "java/lang/Short", 'S', "short" , "[S", NULL, NULL },
- { NULL, NULL, "java/lang/Boolean", 'Z', "boolean" , "[Z", NULL, NULL },
- { NULL, NULL, "java/lang/Void", 'V', "void" , NULL, NULL, NULL }};
-
-/* instances of important system classes **************************************/
-
-java_objectheader *proto_java_lang_ClassCastException;
-java_objectheader *proto_java_lang_NullPointerException;
-java_objectheader *proto_java_lang_ArrayIndexOutOfBoundsException;
-java_objectheader *proto_java_lang_NegativeArraySizeException;
-java_objectheader *proto_java_lang_OutOfMemoryError;
-java_objectheader *proto_java_lang_ArithmeticException;
-java_objectheader *proto_java_lang_ArrayStoreException;
-java_objectheader *proto_java_lang_ThreadDeath;
+ { NULL, NULL, "java/lang/Integer", 'I', "int" , "[I", NULL, NULL },
+ { NULL, NULL, "java/lang/Long", 'J', "long" , "[J", NULL, NULL },
+ { NULL, NULL, "java/lang/Float", 'F', "float" , "[F", NULL, NULL },
+ { NULL, NULL, "java/lang/Double", 'D', "double" , "[D", NULL, NULL },
+ { NULL, NULL, "java/lang/Byte", 'B', "byte" , "[B", NULL, NULL },
+ { NULL, NULL, "java/lang/Character", 'C', "char" , "[C", NULL, NULL },
+ { NULL, NULL, "java/lang/Short", 'S', "short" , "[S", NULL, NULL },
+ { NULL, NULL, "java/lang/Boolean", 'Z', "boolean" , "[Z", NULL, NULL },
+ { NULL, NULL, "java/lang/Void", 'V', "void" , NULL, NULL, NULL }
+};
+
/************* functions for reading classdata *********************************
*******************************************************************************/
-static char *classpath = ""; /* searchpath for classfiles */
-static u1 *classbuffer = NULL; /* pointer to buffer with classfile-data */
-static u1 *classbuf_pos; /* current position in classfile buffer */
-static int classbuffer_size; /* size of classfile-data */
+/* check_classbuffer_size ******************************************************
+
+ assert that at least <len> bytes are left to read
+ <len> is limited to the range of non-negative s4 values
+
+*******************************************************************************/
+
+static inline bool check_classbuffer_size(classbuffer *cb, s4 len)
+{
+ if (len < 0 || ((cb->data + cb->size) - cb->pos - 1) < len) {
+ *exceptionptr =
+ new_classformaterror((cb)->class, "Truncated class file");
+
+ return false;
+ }
+
+ return true;
+}
+
+
+/* suck_nbytes *****************************************************************
+
+ transfer block of classfile data into a buffer
+
+*******************************************************************************/
+
+inline void suck_nbytes(u1 *buffer, classbuffer *cb, s4 len)
+{
+ memcpy(buffer, cb->pos + 1, len);
+ cb->pos += len;
+}
-/* transfer block of classfile data into a buffer */
-#define suck_nbytes(buffer,len) memcpy(buffer,classbuf_pos+1,len); \
- classbuf_pos+=len;
+/* skip_nbytes ****************************************************************
-/* skip block of classfile data */
+ skip block of classfile data
-#define skip_nbytes(len) classbuf_pos+=len;
+*******************************************************************************/
-inline u1 suck_u1()
+inline void skip_nbytes(classbuffer *cb, s4 len)
{
- return *++classbuf_pos;
+ cb->pos += len;
}
-inline u2 suck_u2()
+
+
+inline u1 suck_u1(classbuffer *cb)
{
- u1 a=suck_u1(), b=suck_u1();
- return ((u2)a<<8)+(u2)b;
+ return *++(cb->pos);
}
-inline u4 suck_u4()
+
+
+inline u2 suck_u2(classbuffer *cb)
{
- u1 a=suck_u1(), b=suck_u1(), c=suck_u1(), d=suck_u1();
- return ((u4)a<<24)+((u4)b<<16)+((u4)c<<8)+(u4)d;
+ u1 a = suck_u1(cb);
+ u1 b = suck_u1(cb);
+ return ((u2) a << 8) + (u2) b;
}
-#define suck_s8() (s8) suck_u8()
-#define suck_s2() (s2) suck_u2()
-#define suck_s4() (s4) suck_u4()
-#define suck_s1() (s1) suck_u1()
-/* get u8 from classfile data */
+inline u4 suck_u4(classbuffer *cb)
+{
+ u1 a = suck_u1(cb);
+ u1 b = suck_u1(cb);
+ u1 c = suck_u1(cb);
+ u1 d = suck_u1(cb);
+ return ((u4) a << 24) + ((u4) b << 16) + ((u4) c << 8) + (u4) d;
+}
-static u8 suck_u8 ()
+
+/* get u8 from classfile data */
+static u8 suck_u8(classbuffer *cb)
{
#if U8_AVAILABLE
- u8 lo,hi;
- hi = suck_u4();
- lo = suck_u4();
- return (hi<<32) + lo;
+ u8 lo, hi;
+ hi = suck_u4(cb);
+ lo = suck_u4(cb);
+ return (hi << 32) + lo;
#else
u8 v;
- v.high = suck_u4();
- v.low = suck_u4();
+ v.high = suck_u4(cb);
+ v.low = suck_u4(cb);
return v;
#endif
}
-/* get float from classfile data */
-static float suck_float ()
+#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))
+
+
+/* get float from classfile data */
+static float suck_float(classbuffer *cb)
{
float f;
#if !WORDS_BIGENDIAN
- u1 buffer[4];
- u2 i;
- for (i=0; i<4; i++) buffer[3-i] = suck_u1 ();
- memcpy ( (u1*) (&f), buffer, 4);
-#else
- suck_nbytes ( (u1*) (&f), 4 );
+ u1 buffer[4];
+ u2 i;
+
+ for (i = 0; i < 4; i++)
+ buffer[3 - i] = suck_u1(cb);
+
+ memcpy((u1*) (&f), buffer, 4);
+#else
+ suck_nbytes((u1*) (&f), cb, 4);
#endif
- PANICIF (sizeof(float) != 4, "Incompatible float-format");
+ if (sizeof(float) != 4) {
+ *exceptionptr = new_exception_message(string_java_lang_InternalError,
+ "Incompatible float-format");
+
+ /* XXX should we exit in such a case? */
+ throw_exception_exit();
+ }
return f;
}
+
/* get double from classfile data */
-static double suck_double ()
+static double suck_double(classbuffer *cb)
{
double d;
#if !WORDS_BIGENDIAN
- u1 buffer[8];
- u2 i;
- for (i=0; i<8; i++) buffer[7-i] = suck_u1 ();
- memcpy ( (u1*) (&d), buffer, 8);
+ u1 buffer[8];
+ u2 i;
+
+ for (i = 0; i < 8; i++)
+ buffer[7 - i] = suck_u1(cb);
+
+ memcpy((u1*) (&d), buffer, 8);
#else
- suck_nbytes ( (u1*) (&d), 8 );
+ suck_nbytes((u1*) (&d), cb, 8);
#endif
- PANICIF (sizeof(double) != 8, "Incompatible double-format" );
+ if (sizeof(double) != 8) {
+ *exceptionptr = new_exception_message(string_java_lang_InternalError,
+ "Incompatible double-format");
+
+ /* XXX should we exit in such a case? */
+ throw_exception_exit();
+ }
return d;
}
+
/************************** function suck_init *********************************
called once at startup, sets the searchpath for the classfiles
*******************************************************************************/
-void suck_init (char *cpath)
+void suck_init(char *classpath)
+{
+ char *start;
+ char *end;
+ char *filename;
+ s4 filenamelen;
+ bool is_zip;
+ classpath_info *cpi;
+ classpath_info *lastcpi;
+
+ if (!classpath)
+ return;
+
+ for (start = classpath; (*start) != '\0';) {
+
+ /* search for ':' delimiter to get the end of the current entry */
+ for (end = start; ((*end) != '\0') && ((*end) != ':'); end++);
+
+ if (start != end) {
+ is_zip = false;
+ filenamelen = end - start;
+
+ if (filenamelen > 3) {
+ if (strncasecmp(end - 3, "zip", 3) == 0 ||
+ strncasecmp(end - 3, "jar", 3) == 0) {
+ is_zip = true;
+ }
+ }
+
+ /* allocate memory for filename and fill it */
+
+ filename = MNEW(char, filenamelen + 2); /* 2 = "/\0" */
+ strncpy(filename, start, filenamelen);
+ filename[filenamelen + 1] = '\0';
+ cpi = NULL;
+
+ if (is_zip) {
+#if defined(USE_ZLIB)
+ unzFile uf = unzOpen(filename);
+
+ if (uf) {
+ cpi = (union classpath_info *) NEW(classpath_info);
+ cpi->archive.type = CLASSPATH_ARCHIVE;
+ cpi->archive.uf = uf;
+ cpi->archive.next = NULL;
+ }
+#else
+ throw_cacao_exception_exit(string_java_lang_InternalError,
+ "zip/jar files not supported");
+#endif
+
+ } else {
+ cpi = (union classpath_info *) NEW(classpath_info);
+ cpi->filepath.type = CLASSPATH_PATH;
+ cpi->filepath.next = NULL;
+
+ if (filename[filenamelen - 1] != '/') {/*PERHAPS THIS SHOULD BE READ FROM A GLOBAL CONFIGURATION */
+ filename[filenamelen] = '/';
+ filename[filenamelen + 1] = '\0';
+ filenamelen++;
+ }
+
+ cpi->filepath.path = filename;
+ cpi->filepath.pathlen = filenamelen;
+ }
+
+ /* attach current classpath entry */
+
+ if (cpi) {
+ if (!classpath_entries) {
+ classpath_entries = cpi;
+
+ } else {
+ lastcpi->filepath.next = cpi;
+ }
+
+ lastcpi = cpi;
+ }
+ }
+
+ /* goto next classpath entry, skip ':' delimiter */
+
+ if ((*end) == ':') {
+ start = end + 1;
+
+ } else {
+ start = end;
+ }
+ }
+}
+
+
+void create_all_classes()
{
- classpath = cpath;
- classbuffer = NULL;
+ classpath_info *cpi;
+
+ for (cpi = classpath_entries; cpi != 0; cpi = cpi->filepath.next) {
+#if defined(USE_ZLIB)
+ if (cpi->filepath.type == CLASSPATH_ARCHIVE) {
+ cacao_entry_s *ce;
+ unz_s *s;
+
+ s = (unz_s *) cpi->archive.uf;
+ ce = s->cacao_dir_list;
+
+ while (ce) {
+ (void) class_new(ce->name);
+ ce = ce->next;
+ }
+
+ } else {
+#endif
+#if defined(USE_ZLIB)
+ }
+#endif
+ }
}
*******************************************************************************/
-
-bool suck_start (utf *classname) {
-
-#define MAXFILENAME 1000 /* maximum length of a filename */
-
- char filename[MAXFILENAME+10]; /* room for '.class' */
- char *pathpos; /* position in searchpath */
- char c, *utf_ptr; /* pointer to the next utf8-character */
+classbuffer *suck_start(classinfo *c)
+{
+ classpath_info *cpi;
+/* char *utf_ptr; */
+/* char ch; */
+ char *filename;
+ s4 filenamelen;
+ char *path;
FILE *classfile;
- int filenamelen, err;
+ bool found;
+ s4 len;
struct stat buffer;
- int isZip;
+ classbuffer *cb;
- if (classbuffer) /* classbuffer is already valid */
- return true;
+#if 0
+ utf_ptr = c->name->text;
- pathpos = classpath;
-
- while (*pathpos) {
+ while (utf_ptr < utf_end(c->name)) {
+ if (filenamelen >= CLASSPATH_MAXFILENAME) {
+ *exceptionptr =
+ new_exception_message(string_java_lang_InternalError,
+ "Filename too long");
- /* skip path separator */
+ /* XXX should we exit in such a case? */
+ throw_exception_exit();
+ }
- while (*pathpos == ':')
- pathpos++;
-
- /* extract directory from searchpath */
+ ch = *utf_ptr++;
+ if ((ch <= ' ' || ch > 'z') && (ch != '/')) /* invalid character */
+ ch = '?';
+ filename[filenamelen++] = ch;
+ }
+#endif
- filenamelen = 0;
- while ((*pathpos) && (*pathpos!=':')) {
- PANICIF (filenamelen >= MAXFILENAME, "Filename too long") ;
- filename[filenamelen++] = *(pathpos++);
- }
+ /* initialize return value */
- isZip=0;
- if (filenamelen>4) {
- if ( ((filename[filenamelen-1]=='p') || (filename[filenamelen-1]=='P')) &
- ((filename[filenamelen-2]=='i') || (filename[filenamelen-1]=='I')) &
- ((filename[filenamelen-3]=='z') || (filename[filenamelen-1]=='Z')) ) {
- isZip=1;
- }
- }
+ found = false;
+ cb = NULL;
- if (isZip) {
-#ifdef USE_ZLIB
-
- filename[filenamelen++]='\0';
- if (uf==0) uf=unzOpen(filename);
- if (uf!=0) {
- utf_ptr = classname->text;
- filenamelen=0;
- while (utf_ptr < utf_end(classname)) {
- PANICIF (filenamelen >= MAXFILENAME, "Filename too long");
- c = *utf_ptr++;
- if ((c <= ' ' || c > 'z') && (c != '/')) /* invalid character */
- c = '?';
- filename[filenamelen++] = c;
- }
- strcpy (filename+filenamelen, ".class");
- if (cacao_locate(uf,classname)==UNZ_OK) {
- unz_file_info file_info;
- log_text("Class found in zip file");
- if (unzGetCurrentFileInfo(uf,&file_info,filename,
- sizeof(filename),NULL,0,NULL,0) ==UNZ_OK) {
- if (unzOpenCurrentFile(uf)==UNZ_OK) {
- classbuffer_size = file_info.uncompressed_size;
- classbuffer = MNEW(u1, classbuffer_size);
- classbuf_pos = classbuffer-1;
- /*printf("classfile size: %d\n",file_info.uncompressed_size);*/
- if (unzReadCurrentFile(uf,classbuffer,classbuffer_size)==classbuffer_size) {
- unzCloseCurrentFile(uf);
- return true;
- } else {
- MFREE(classbuffer,u1,classbuffer_size);
- log_text("Error while unzipping");
- }
- } else log_text("Error while opening file in archive");
- } else log_text("Error while retrieving fileinfo");
- };
- unzCloseCurrentFile(uf);
+ filenamelen = utf_strlen(c->name) + 7; /* 7 = ".class\0" */
+ filename = MNEW(char, filenamelen);
- }
-#endif
- } else {
- filename[filenamelen++] = '/';
-
- /* add classname to filename */
-
- utf_ptr = classname->text;
- while (utf_ptr < utf_end(classname)) {
- PANICIF (filenamelen >= MAXFILENAME, "Filename too long");
- c = *utf_ptr++;
- if ((c <= ' ' || c > 'z') && (c != '/')) /* invalid character */
- c = '?';
- filename[filenamelen++] = c;
- }
-
- /* add suffix */
+ utf_sprint(filename, c->name);
+ strcat(filename, ".class");
+
+ /* walk through all classpath entries */
+
+ for (cpi = classpath_entries; cpi != NULL && cb == NULL; cpi = cpi->filepath.next) {
+#if defined(USE_ZLIB)
+ if (cpi->filepath.type == CLASSPATH_ARCHIVE) {
+ if (cacao_locate(cpi->archive.uf, c->name) == UNZ_OK) {
+ unz_file_info file_info;
+
+ if (unzGetCurrentFileInfo(cpi->archive.uf, &file_info, filename,
+ sizeof(filename), NULL, 0, NULL, 0) == UNZ_OK) {
+ if (unzOpenCurrentFile(cpi->archive.uf) == UNZ_OK) {
+ cb = NEW(classbuffer);
+ cb->class = c;
+ cb->size = file_info.uncompressed_size;
+ cb->data = MNEW(u1, cb->size);
+ cb->pos = cb->data - 1;
- strcpy (filename+filenamelen, ".class");
+ len = unzReadCurrentFile(cpi->archive.uf, cb->data, cb->size);
- classfile = fopen(filename, "r");
- if (classfile) { /* file exists */
+ if (len != cb->size) {
+ suck_stop(cb);
+ log_text("Error while unzipping");
- /* determine size of classfile */
+ } else {
+ found = true;
+ }
+
+ } else {
+ log_text("Error while opening file in archive");
+ }
- err = stat (filename, &buffer);
+ } else {
+ log_text("Error while retrieving fileinfo");
+ }
+ }
+ unzCloseCurrentFile(cpi->archive.uf);
- if (!err) { /* read classfile data */
- classbuffer_size = buffer.st_size;
- classbuffer = MNEW(u1, classbuffer_size);
- classbuf_pos = classbuffer-1;
- fread(classbuffer, 1, classbuffer_size, classfile);
- fclose(classfile);
- return true;
+ } else {
+#endif /* USE_ZLIB */
+
+ path = MNEW(char, cpi->filepath.pathlen + filenamelen + 1);
+ strcpy(path, cpi->filepath.path);
+ strcat(path, filename);
+
+ classfile = fopen(path, "r");
+
+ if (classfile) { /* file exists */
+ if (!stat(path, &buffer)) { /* read classfile data */
+ cb = NEW(classbuffer);
+ cb->class = c;
+ cb->size = buffer.st_size;
+ cb->data = MNEW(u1, cb->size);
+ cb->pos = cb->data - 1;
+
+ /* read class data */
+ len = fread(cb->data, 1, cb->size, classfile);
+
+ if (len != buffer.st_size) {
+ suck_stop(cb);
+/* if (ferror(classfile)) { */
+/* } */
+
+ } else {
+ found = true;
+ }
}
}
+
+ MFREE(path, char, cpi->filepath.pathlen + filenamelen + 1);
+#if defined(USE_ZLIB)
}
+#endif
}
- if (verbose) {
- sprintf (logtext, "Warning: Can not open class file '%s'", filename);
- dolog();
+
+ if (opt_verbose) {
+ if (!found)
+ dolog("Warning: Can not open class file '%s'", filename);
}
- return false;
+ MFREE(filename, char, filenamelen);
+
+ return cb;
}
*******************************************************************************/
-void suck_stop () {
-
- /* determine amount of classdata not retrieved by suck-operations */
-
- int classdata_left = ((classbuffer+classbuffer_size)-classbuf_pos-1);
-
- if (classdata_left > 0) {
- /* surplus */
- sprintf (logtext,"There are %d access bytes at end of classfile",
- classdata_left);
- dolog();
- }
-
+void suck_stop(classbuffer *cb)
+{
/* free memory */
- MFREE(classbuffer, u1, classbuffer_size);
- classbuffer = NULL;
+ MFREE(cb->data, u1, cb->size);
+ FREE(cb, classbuffer);
}
+
/******************************************************************************/
/******************* Some support functions ***********************************/
/******************************************************************************/
-
-
void fprintflags (FILE *fp, u2 f)
{
if ( f & ACC_PUBLIC ) fprintf (fp," PUBLIC");
if ( f & ACC_ABSTRACT ) fprintf (fp," ABSTRACT");
}
+
/********** internal function: printflags (only for debugging) ***************/
-void printflags (u2 f)
+
+void printflags(u2 f)
{
if ( f & ACC_PUBLIC ) printf (" PUBLIC");
if ( f & ACC_PRIVATE ) printf (" PRIVATE");
}
-/************************* Function: skipattribute *****************************
-
- skips a (1) 'attribute' structure in the class file
-
-*******************************************************************************/
-
-static void skipattribute ()
-{
- suck_u2 ();
- skip_nbytes(suck_u4());
-}
-
/********************** Function: skipattributebody ****************************
skips an attribute after the 16 bit reference to attribute_name has already
*******************************************************************************/
-static void skipattributebody ()
+static bool skipattributebody(classbuffer *cb)
{
- skip_nbytes(suck_u4());
+ u4 len;
+
+ if (!check_classbuffer_size(cb, 4))
+ return false;
+
+ len = suck_u4(cb);
+
+ if (!check_classbuffer_size(cb, len))
+ return false;
+
+ skip_nbytes(cb, len);
+
+ return true;
}
+
/************************* Function: skipattributes ****************************
skips num attribute structures
*******************************************************************************/
-static void skipattributes (u4 num)
+static bool skipattributes(classbuffer *cb, u4 num)
{
u4 i;
- for (i = 0; i < num; i++)
- skipattribute();
+ u4 len;
+
+ for (i = 0; i < num; i++) {
+ if (!check_classbuffer_size(cb, 2 + 4))
+ return false;
+
+ suck_u2(cb);
+ len = suck_u4(cb);
+
+ if (!check_classbuffer_size(cb, len))
+ return false;
+
+ skip_nbytes(cb, len);
+ }
+
+ return true;
+}
+
+
+/******************** function:: class_getconstant *****************************
+
+ retrieves the value at position 'pos' of the constantpool of a class
+ if the type of the value is other than 'ctype' the system is stopped
+
+*******************************************************************************/
+
+voidptr class_getconstant(classinfo *c, u4 pos, u4 ctype)
+{
+ /* check index and type of constantpool entry */
+ /* (pos == 0 is caught by type comparison) */
+ if (pos >= c->cpcount || c->cptags[pos] != ctype) {
+ *exceptionptr = new_classformaterror(c, "Illegal constant pool index");
+ return NULL;
+ }
+
+ return c->cpinfos[pos];
}
+
/******************** function: innerclass_getconstant ************************
- like class_getconstant, but if cptags is ZERO null is returned
+ like class_getconstant, but if cptags is ZERO null is returned
*******************************************************************************/
-voidptr innerclass_getconstant (classinfo *c, u4 pos, u4 ctype)
+voidptr innerclass_getconstant(classinfo *c, u4 pos, u4 ctype)
{
/* invalid position in constantpool */
- if (pos >= c->cpcount)
- panic ("Attempt to access constant outside range");
+ if (pos >= c->cpcount) {
+ *exceptionptr = new_classformaterror(c, "Illegal constant pool index");
+ return NULL;
+ }
/* constantpool entry of type 0 */
if (!c->cptags[pos])
/* check type of constantpool entry */
if (c->cptags[pos] != ctype) {
- sprintf (logtext, "Type mismatch on constant: %d requested, %d here (innerclass_getconstant)",
- (int) ctype, (int) c->cptags[pos] );
- error();
- }
+ *exceptionptr = new_classformaterror(c, "Illegal constant pool index");
+ return NULL;
+ }
return c->cpinfos[pos];
}
+
+/********************* Function: class_constanttype ****************************
+
+ Determines the type of a class entry in the ConstantPool
+
+*******************************************************************************/
+
+u4 class_constanttype(classinfo *c, u4 pos)
+{
+ if (pos <= 0 || pos >= c->cpcount) {
+ *exceptionptr = new_classformaterror(c, "Illegal constant pool index");
+ return 0;
+ }
+
+ return c->cptags[pos];
+}
+
+
/************************ function: attribute_load ****************************
read attributes from classfile
*******************************************************************************/
-static void attribute_load (u4 num, classinfo *c)
+static bool attribute_load(classbuffer *cb, classinfo *c, u4 num)
{
- u4 i,j;
+ utf *aname;
+ u4 i, j;
for (i = 0; i < num; i++) {
- /* retrieve attribute name */
- utf *aname = class_getconstant (c, suck_u2(), CONSTANT_Utf8);
+ /* retrieve attribute name */
+ if (!check_classbuffer_size(cb, 2))
+ return false;
+
+ if (!(aname = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
- if ( aname == utf_innerclasses) {
+ if (aname == utf_innerclasses) {
/* innerclasses attribute */
+ if (c->innerclass) {
+ *exceptionptr =
+ new_classformaterror(c, "Multiple InnerClasses attributes");
+ return false;
+ }
- /* skip attribute length */
- suck_u4();
+ if (!check_classbuffer_size(cb, 4 + 2))
+ return false;
+
+ /* skip attribute length */
+ suck_u4(cb);
+
/* number of records */
- c->innerclasscount = suck_u2();
- /* allocate memory for innerclass structure */
- c->innerclass = MNEW (innerclassinfo, c->innerclasscount);
+ c->innerclasscount = suck_u2(cb);
- for (j=0;j<c->innerclasscount;j++) {
-
- /* The innerclass structure contains a class with an encoded name,
- its defining scope, its simple name and a bitmask of the access flags.
- If an inner class is not a member, its outer_class is NULL,
- if a class is anonymous, its name is NULL. */
+ if (!check_classbuffer_size(cb, (2 + 2 + 2 + 2) * c->innerclasscount))
+ return false;
+
+ /* allocate memory for innerclass structure */
+ c->innerclass = MNEW(innerclassinfo, c->innerclasscount);
+
+ for (j = 0; j < c->innerclasscount; j++) {
+ /* The innerclass structure contains a class with an encoded
+ name, its defining scope, its simple name and a bitmask of
+ the access flags. If an inner class is not a member, its
+ outer_class is NULL, if a class is anonymous, its name is
+ NULL. */
innerclassinfo *info = c->innerclass + j;
- info->inner_class = innerclass_getconstant(c, suck_u2(), CONSTANT_Class); /* CONSTANT_Class_info index */
- info->outer_class = innerclass_getconstant(c, suck_u2(), CONSTANT_Class); /* CONSTANT_Class_info index */
- info->name = innerclass_getconstant(c, suck_u2(), CONSTANT_Utf8); /* CONSTANT_Utf8_info index */
- info->flags = suck_u2 (); /* access_flags bitmask */
+ info->inner_class =
+ innerclass_getconstant(c, suck_u2(cb), CONSTANT_Class);
+ info->outer_class =
+ innerclass_getconstant(c, suck_u2(cb), CONSTANT_Class);
+ info->name =
+ innerclass_getconstant(c, suck_u2(cb), CONSTANT_Utf8);
+ info->flags = suck_u2(cb);
+ }
+
+ } else if (aname == utf_sourcefile) {
+ if (!check_classbuffer_size(cb, 4 + 2))
+ return false;
+
+ if (suck_u4(cb) != 2) {
+ *exceptionptr =
+ new_classformaterror(c, "Wrong size for VALUE attribute");
+ return false;
+ }
+
+ if (c->sourcefile) {
+ *exceptionptr =
+ new_classformaterror(c, "Multiple SourceFile attributes");
+ return false;
}
+
+ if (!(c->sourcefile = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
+
} else {
/* unknown attribute */
- skipattributebody ();
+ if (!skipattributebody(cb))
+ return false;
}
}
+
+ return true;
}
+
/******************* function: checkfielddescriptor ****************************
checks whether a field-descriptor is valid and aborts otherwise
static void checkfielddescriptor (char *utf_ptr, char *end_pos)
{
+ class_from_descriptor(utf_ptr,end_pos,NULL,
+ CLASSLOAD_NEW
+ | CLASSLOAD_NULLPRIMITIVE
+ | CLASSLOAD_NOVOID
+ | CLASSLOAD_CHECKEND);
+
+ /* XXX use the following if -noverify */
+#if 0
char *tstart; /* pointer to start of classname */
char ch;
char *start = utf_ptr;
/* exceeding characters */
if (utf_ptr!=end_pos) panic ("descriptor has exceeding chars");
+#endif
}
checks whether a method-descriptor is valid and aborts otherwise.
All referenced classes are inserted into the list of unloaded classes.
+
+ The number of arguments is returned. A long or double argument is counted
+ as two arguments.
*******************************************************************************/
-static void checkmethoddescriptor (utf *d)
+static int checkmethoddescriptor(classinfo *c, utf *descriptor)
{
- char *utf_ptr = d->text; /* current position in utf text */
- char *end_pos = utf_end(d); /* points behind utf string */
- char *tstart; /* pointer to start of classname */
- char c,ch;
- char *start;
+ char *utf_ptr; /* current position in utf text */
+ char *end_pos; /* points behind utf string */
+ s4 argcount = 0; /* number of arguments */
+
+ utf_ptr = descriptor->text;
+ end_pos = utf_end(descriptor);
/* method descriptor must start with parenthesis */
- /* XXX check length */
- if (*utf_ptr++ != '(') panic ("Missing '(' in method descriptor");
+ if (utf_ptr == end_pos || *utf_ptr++ != '(')
+ panic ("Missing '(' in method descriptor");
+
+ /* check arguments */
+ while (utf_ptr != end_pos && *utf_ptr != ')') {
+ /* We cannot count the this argument here because
+ * we don't know if the method is static. */
+ if (*utf_ptr == 'J' || *utf_ptr == 'D')
+ argcount+=2;
+ else
+ argcount++;
+ class_from_descriptor(utf_ptr,end_pos,&utf_ptr,
+ CLASSLOAD_NEW
+ | CLASSLOAD_NULLPRIMITIVE
+ | CLASSLOAD_NOVOID);
+ }
- /* XXX check length */
+ if (utf_ptr == end_pos)
+ panic("Missing ')' in method descriptor");
+
+ utf_ptr++; /* skip ')' */
+
+ class_from_descriptor(utf_ptr,
+ end_pos,
+ NULL,
+ CLASSLOAD_NEW |
+ CLASSLOAD_NULLPRIMITIVE |
+ CLASSLOAD_CHECKEND);
+
+ if (argcount > 255) {
+ *exceptionptr =
+ new_classformaterror(c, "Too many arguments in signature");
+
+ return 0;
+ }
+
+ return argcount;
+
+ /* XXX use the following if -noverify */
+#if 0
/* check arguments */
while ((c = *utf_ptr++) != ')') {
start = utf_ptr-1;
else
/* treat as field-descriptor */
checkfielddescriptor (utf_ptr,end_pos);
+#endif
}
+
/***************** Function: print_arraydescriptor ****************************
Debugging helper for displaying an arraydescriptor
*******************************************************************************/
-void
-print_arraydescriptor(FILE *file,arraydescriptor *desc)
+void print_arraydescriptor(FILE *file, arraydescriptor *desc)
{
if (!desc) {
- fprintf(file,"<NULL>");
+ fprintf(file, "<NULL>");
return;
}
- fprintf(file,"{");
+ fprintf(file, "{");
if (desc->componentvftbl) {
if (desc->componentvftbl->class)
- utf_fprint(file,desc->componentvftbl->class->name);
+ utf_fprint(file, desc->componentvftbl->class->name);
else
- fprintf(file,"<no classinfo>");
+ fprintf(file, "<no classinfo>");
}
else
- fprintf(file,"0");
+ fprintf(file, "0");
- fprintf(file,",");
+ fprintf(file, ",");
if (desc->elementvftbl) {
if (desc->elementvftbl->class)
- utf_fprint(file,desc->elementvftbl->class->name);
+ utf_fprint(file, desc->elementvftbl->class->name);
else
- fprintf(file,"<no classinfo>");
+ fprintf(file, "<no classinfo>");
}
else
- fprintf(file,"0");
- fprintf(file,",%d,%d,%d,%d}",desc->arraytype,desc->dimension,
- desc->dataoffset,desc->componentsize);
+ fprintf(file, "0");
+ fprintf(file, ",%d,%d,%d,%d}", desc->arraytype, desc->dimension,
+ desc->dataoffset, desc->componentsize);
}
+
/******************************************************************************/
/************************** Functions for fields ****************************/
/******************************************************************************/
-/************************ Function: field_load *********************************
+/* field_load ******************************************************************
- Load everything about a class field from the class file and fill a
- 'fieldinfo' structure. For static fields, space in the data segment is
- allocated.
+ Load everything about a class field from the class file and fill a
+ 'fieldinfo' structure. For static fields, space in the data segment is
+ allocated.
*******************************************************************************/
-static void field_load (fieldinfo *f, classinfo *c)
+#define field_load_NOVALUE 0xffffffff /* must be bigger than any u2 value! */
+
+static bool field_load(classbuffer *cb, classinfo *c, fieldinfo *f)
{
- u4 attrnum,i;
+ u4 attrnum, i;
u4 jtype;
+ u4 pindex = field_load_NOVALUE; /* constantvalue_index */
+ utf *u;
- f -> flags = suck_u2 (); /* ACC flags */
- f -> name = class_getconstant (c, suck_u2(), CONSTANT_Utf8); /* name of field */
- f -> descriptor = class_getconstant (c, suck_u2(), CONSTANT_Utf8); /* JavaVM descriptor */
- f -> type = jtype = desc_to_type (f->descriptor); /* data type */
- f -> offset = 0; /* offset from start of object */
- f->xta = NULL;
-
- switch (f->type) {
- case TYPE_INT: f->value.i = 0; break;
- case TYPE_FLOAT: f->value.f = 0.0; break;
- case TYPE_DOUBLE: f->value.d = 0.0; break;
- case TYPE_ADDRESS: f->value.a = NULL;
- heap_addreference (&(f->value.a)); /* make global reference (GC) */
- break;
- case TYPE_LONG:
+ if (!check_classbuffer_size(cb, 2 + 2 + 2))
+ return false;
+
+ f->flags = suck_u2(cb);
+
+ if (!(u = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
+ f->name = u;
+
+ if (!(u = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
+ f->descriptor = u;
+
+ if (opt_verify) {
+ /* check name */
+ if (!is_valid_name_utf(f->name) || f->name->text[0] == '<')
+ panic("Field with invalid name");
+
+ /* check flag consistency */
+ i = f->flags & (ACC_PUBLIC | ACC_PRIVATE | ACC_PROTECTED);
+
+ if ((i != 0 && i != ACC_PUBLIC && i != ACC_PRIVATE && i != ACC_PROTECTED) ||
+ ((f->flags & (ACC_FINAL | ACC_VOLATILE)) == (ACC_FINAL | ACC_VOLATILE))) {
+ *exceptionptr =
+ new_classformaterror(c,
+ "Illegal field modifiers: 0x%X",
+ f->flags);
+ return false;
+ }
+
+ if (c->flags & ACC_INTERFACE) {
+ if (((f->flags & (ACC_STATIC | ACC_PUBLIC | ACC_FINAL))
+ != (ACC_STATIC | ACC_PUBLIC | ACC_FINAL)) ||
+ f->flags & ACC_TRANSIENT) {
+ *exceptionptr =
+ new_classformaterror(c,
+ "Illegal field modifiers: 0x%X",
+ f->flags);
+ return false;
+ }
+ }
+
+ /* check descriptor */
+ checkfielddescriptor(f->descriptor->text, utf_end(f->descriptor));
+ }
+
+ f->type = jtype = desc_to_type(f->descriptor); /* data type */
+ f->offset = 0; /* offset from start of object */
+ f->class = c;
+ f->xta = NULL;
+
+ switch (f->type) {
+ case TYPE_INT: f->value.i = 0; break;
+ case TYPE_FLOAT: f->value.f = 0.0; break;
+ case TYPE_DOUBLE: f->value.d = 0.0; break;
+ case TYPE_ADDRESS: f->value.a = NULL; break;
+ case TYPE_LONG:
#if U8_AVAILABLE
f->value.l = 0; break;
#else
f->value.l.low = 0; f->value.l.high = 0; break;
-#endif
+#endif
}
/* read attributes */
- attrnum = suck_u2();
- for (i=0; i<attrnum; i++) {
- u4 pindex;
- utf *aname;
+ if (!check_classbuffer_size(cb, 2))
+ return false;
- aname = class_getconstant (c, suck_u2(), CONSTANT_Utf8);
-
- if ( aname != utf_constantvalue ) {
- /* unknown attribute */
- skipattributebody ();
+ attrnum = suck_u2(cb);
+ for (i = 0; i < attrnum; i++) {
+ if (!check_classbuffer_size(cb, 2))
+ return false;
+
+ if (!(u = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
+
+ if (u == utf_constantvalue) {
+ if (!check_classbuffer_size(cb, 4 + 2))
+ return false;
+
+ /* check attribute length */
+ if (suck_u4(cb) != 2) {
+ *exceptionptr =
+ new_classformaterror(c, "Wrong size for VALUE attribute");
+ return false;
}
- else {
+
/* constant value attribute */
+ if (pindex != field_load_NOVALUE) {
+ *exceptionptr =
+ new_classformaterror(c,
+ "Multiple ConstantValue attributes");
+ return false;
+ }
- /* skip attribute length */
- suck_u4();
/* index of value in constantpool */
- pindex = suck_u2();
+ pindex = suck_u2(cb);
/* initialize field with value from constantpool */
switch (jtype) {
- case TYPE_INT: {
- constant_integer *ci =
- class_getconstant(c, pindex, CONSTANT_Integer);
- f->value.i = ci -> value;
- }
- break;
+ case TYPE_INT: {
+ constant_integer *ci;
+
+ if (!(ci = class_getconstant(c, pindex, CONSTANT_Integer)))
+ return false;
+
+ f->value.i = ci->value;
+ }
+ break;
- case TYPE_LONG: {
- constant_long *cl =
- class_getconstant(c, pindex, CONSTANT_Long);
-
- f->value.l = cl -> value;
- }
- break;
+ case TYPE_LONG: {
+ constant_long *cl;
- case TYPE_FLOAT: {
- constant_float *cf =
- class_getconstant(c, pindex, CONSTANT_Float);
-
- f->value.f = cf->value;
- }
- break;
+ if (!(cl = class_getconstant(c, pindex, CONSTANT_Long)))
+ return false;
+
+ f->value.l = cl->value;
+ }
+ break;
+
+ case TYPE_FLOAT: {
+ constant_float *cf;
+
+ if (!(cf = class_getconstant(c, pindex, CONSTANT_Float)))
+ return false;
+
+ f->value.f = cf->value;
+ }
+ break;
- case TYPE_DOUBLE: {
- constant_double *cd =
- class_getconstant(c, pindex, CONSTANT_Double);
-
- f->value.d = cd->value;
- }
- break;
-
- case TYPE_ADDRESS: {
- utf *u = class_getconstant(c, pindex, CONSTANT_String);
- /* create javastring from compressed utf8-string */
- f->value.a = literalstring_new(u);
- }
- break;
-
- default:
- log_text ("Invalid Constant - Type");
+ case TYPE_DOUBLE: {
+ constant_double *cd;
- }
+ if (!(cd = class_getconstant(c, pindex, CONSTANT_Double)))
+ return false;
+ f->value.d = cd->value;
}
+ break;
+
+ case TYPE_ADDRESS:
+ if (!(u = class_getconstant(c, pindex, CONSTANT_String)))
+ return false;
+
+ /* create javastring from compressed utf8-string */
+ f->value.a = literalstring_new(u);
+ break;
+
+ default:
+ log_text("Invalid Constant - Type");
+ }
+
+ } else {
+ /* unknown attribute */
+ if (!skipattributebody(cb))
+ return false;
}
+ }
+
+ /* everything was ok */
+
+ return true;
}
/********************** function: field_free **********************************/
-static void field_free (fieldinfo *f)
+static void field_free(fieldinfo *f)
{
/* empty */
}
/**************** Function: field_display (debugging only) ********************/
-void field_display (fieldinfo *f)
+void field_display(fieldinfo *f)
{
- printf (" ");
- printflags (f -> flags);
- printf (" ");
- utf_display (f -> name);
- printf (" ");
- utf_display (f -> descriptor);
- printf (" offset: %ld\n", (long int) (f -> offset) );
+ printf(" ");
+ printflags(f->flags);
+ printf(" ");
+ utf_display(f->name);
+ printf(" ");
+ utf_display(f->descriptor);
+ printf(" offset: %ld\n", (long int) (f->offset));
}
/******************************************************************************/
-/************************* Functions for methods ******************************/
+/************************* Functions for methods ******************************/
/******************************************************************************/
-/*********************** Function: method_load *********************************
+/* method_load *****************************************************************
- Loads a method from the class file and fills an existing 'methodinfo'
- structure. For native methods, the function pointer field is set to the
- real function pointer, for JavaVM methods a pointer to the compiler is used
- preliminarily.
+ Loads a method from the class file and fills an existing 'methodinfo'
+ structure. For native methods, the function pointer field is set to the
+ real function pointer, for JavaVM methods a pointer to the compiler is used
+ preliminarily.
*******************************************************************************/
-static void method_load (methodinfo *m, classinfo *c)
+static bool method_load(classbuffer *cb, classinfo *c, methodinfo *m)
{
- u4 attrnum,i,e;
-
+ s4 argcount;
+ s4 i, j;
+ u4 attrnum;
+ u4 codeattrnum;
+ utf *u;
+
+#if defined(USE_THREADS) && defined(NATIVE_THREADS)
+ initObjectLock(&m->header);
+#endif
+
#ifdef STATISTICS
- count_all_methods++;
+ if (opt_stat)
+ count_all_methods++;
#endif
- m -> class = c;
-
- m -> flags = suck_u2 ();
- m -> name = class_getconstant (c, suck_u2(), CONSTANT_Utf8);
- m -> descriptor = class_getconstant (c, suck_u2(), CONSTANT_Utf8);
+ m->thrownexceptionscount = 0;
+ m->linenumbercount = 0;
+ m->linenumbers = 0;
+ m->class = c;
+ m->nativelyoverloaded = false;
- m -> jcode = NULL;
- m -> exceptiontable = NULL;
- m -> entrypoint = NULL;
- m -> mcode = NULL;
- m -> stubroutine = NULL;
- m -> methodUsed = NOTUSED;
- m -> monoPoly = MONO;
- m -> subRedefs = 0;
- m -> subRedefsUsed = 0;
+ if (!check_classbuffer_size(cb, 2 + 2 + 2))
+ return false;
- m->xta = NULL;
+ m->flags = suck_u2(cb);
+
+ if (!(u = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
+ m->name = u;
+
+ if (!(u = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
+ m->descriptor = u;
+
+ if (opt_verify) {
+ if (!is_valid_name_utf(m->name))
+ panic("Method with invalid name");
+
+ if (m->name->text[0] == '<'
+ && m->name != utf_init && m->name != utf_clinit)
+ panic("Method with invalid special name");
+ }
- if (! (m->flags & ACC_NATIVE) ) {
- m -> stubroutine = createcompilerstub (m);
+ argcount = checkmethoddescriptor(c, m->descriptor);
+
+ if (!(m->flags & ACC_STATIC))
+ argcount++; /* count the 'this' argument */
+
+ if (opt_verify) {
+ if (argcount > 255) {
+ *exceptionptr =
+ new_classformaterror(c, "Too many arguments in signature");
+ return false;
}
- else {
- functionptr f = native_findfunction
- (c->name, m->name, m->descriptor, (m->flags & ACC_STATIC) != 0);
- if (f) {
- m -> stubroutine = createnativestub (f, m);
+ /* check flag consistency */
+ if (m->name != utf_clinit) {
+ i = (m->flags & (ACC_PUBLIC | ACC_PRIVATE | ACC_PROTECTED));
+
+ if (i != 0 && i != ACC_PUBLIC && i != ACC_PRIVATE && i != ACC_PROTECTED) {
+ *exceptionptr =
+ new_classformaterror(c,
+ "Illegal method modifiers: 0x%X",
+ m->flags);
+ return false;
+ }
+
+ if (m->flags & ACC_ABSTRACT) {
+ if ((m->flags & (ACC_FINAL | ACC_NATIVE | ACC_PRIVATE |
+ ACC_STATIC | ACC_STRICT | ACC_SYNCHRONIZED))) {
+ *exceptionptr =
+ new_classformaterror(c,
+ "Illegal method modifiers: 0x%X",
+ m->flags);
+ return false;
+ }
+ }
+
+ if (c->flags & ACC_INTERFACE) {
+ if ((m->flags & (ACC_ABSTRACT | ACC_PUBLIC)) != (ACC_ABSTRACT | ACC_PUBLIC)) {
+ *exceptionptr =
+ new_classformaterror(c,
+ "Illegal method modifiers: 0x%X",
+ m->flags);
+ return false;
+ }
+ }
+
+ if (m->name == utf_init) {
+ if (m->flags & (ACC_STATIC | ACC_FINAL | ACC_SYNCHRONIZED |
+ ACC_NATIVE | ACC_ABSTRACT))
+ panic("Instance initialization method has invalid flags set");
}
}
+ }
+
+ m->jcode = NULL;
+ m->basicblockcount = 0;
+ m->basicblocks = NULL;
+ m->basicblockindex = NULL;
+ m->instructioncount = 0;
+ m->instructions = NULL;
+ m->stackcount = 0;
+ m->stack = NULL;
+ m->exceptiontable = NULL;
+ m->stubroutine = NULL;
+ m->mcode = NULL;
+ m->entrypoint = NULL;
+ m->methodUsed = NOTUSED;
+ m->monoPoly = MONO;
+ m->subRedefs = 0;
+ m->subRedefsUsed = 0;
+
+ m->xta = NULL;
+
+ if (!(m->flags & ACC_NATIVE)) {
+ m->stubroutine = createcompilerstub(m);
+
+ } else {
+ /*if (useinlining) {
+ log_text("creating native stub:");
+ method_display(m);
+ }*/
+ functionptr f = native_findfunction(c->name, m->name, m->descriptor,
+ (m->flags & ACC_STATIC) != 0);
+#ifdef STATIC_CLASSPATH
+ if (f)
+#endif
+ {
+ m->stubroutine = createnativestub(f, m);
+ }
+ }
+ if (!check_classbuffer_size(cb, 2))
+ return false;
- attrnum = suck_u2();
- for (i=0; i<attrnum; i++) {
+ attrnum = suck_u2(cb);
+ for (i = 0; i < attrnum; i++) {
utf *aname;
- aname = class_getconstant (c, suck_u2(), CONSTANT_Utf8);
+ if (!check_classbuffer_size(cb, 2))
+ return false;
+
+ if (!(aname = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
+
+ if (aname == utf_code) {
+ if (m->flags & (ACC_ABSTRACT | ACC_NATIVE)) {
+ *exceptionptr =
+ new_classformaterror(c,
+ "Code attribute in native or abstract methods");
- if ( aname != utf_code) {
- skipattributebody ();
+ return false;
}
- else {
- if (m -> jcode) panic ("Two code-attributes for one method!");
- suck_u4();
- m -> maxstack = suck_u2();
- m -> maxlocals = suck_u2();
- m -> jcodelength = suck_u4();
- m -> jcode = MNEW (u1, m->jcodelength);
- suck_nbytes (m->jcode, m->jcodelength);
- m -> exceptiontablelength = suck_u2 ();
- m -> exceptiontable =
- MNEW (exceptiontable, m->exceptiontablelength);
+ if (m->jcode) {
+ *exceptionptr =
+ new_classformaterror(c, "Multiple Code attributes");
-#ifdef STATISTICS
- count_vmcode_len += m->jcodelength + 18;
- count_extable_len += 8 * m->exceptiontablelength;
+ return false;
+ }
+
+ if (!check_classbuffer_size(cb, 4 + 2 + 2))
+ return false;
+
+ suck_u4(cb);
+ m->maxstack = suck_u2(cb);
+ m->maxlocals = suck_u2(cb);
+
+ if (m->maxlocals < argcount) {
+ *exceptionptr =
+ new_classformaterror(c, "Arguments can't fit into locals");
+
+ return false;
+ }
+
+ if (!check_classbuffer_size(cb, 4))
+ return false;
+
+ m->jcodelength = suck_u4(cb);
+
+ if (m->jcodelength == 0) {
+ *exceptionptr =
+ new_classformaterror(c, "Code of a method has length 0");
+
+ return false;
+ }
+
+ if (m->jcodelength > 65535) {
+ *exceptionptr =
+ new_classformaterror(c,
+ "Code of a method longer than 65535 bytes");
+
+ return false;
+ }
+
+ if (!check_classbuffer_size(cb, m->jcodelength))
+ return false;
+
+ m->jcode = MNEW(u1, m->jcodelength);
+ suck_nbytes(m->jcode, cb, m->jcodelength);
+
+ if (!check_classbuffer_size(cb, 2))
+ return false;
+
+ m->exceptiontablelength = suck_u2(cb);
+ if (!check_classbuffer_size(cb, (2 + 2 + 2 + 2) * m->exceptiontablelength))
+ return false;
+
+ m->exceptiontable = MNEW(exceptiontable, m->exceptiontablelength);
+
+#if defined(STATISTICS)
+ if (opt_stat) {
+ count_vmcode_len += m->jcodelength + 18;
+ count_extable_len += 8 * m->exceptiontablelength;
+ }
#endif
- for (e=0; e < m->exceptiontablelength; e++) {
+ for (j = 0; j < m->exceptiontablelength; j++) {
u4 idx;
- m -> exceptiontable[e].startpc = suck_u2();
- m -> exceptiontable[e].endpc = suck_u2();
- m -> exceptiontable[e].handlerpc = suck_u2();
-
- idx = suck_u2();
- if (!idx) m -> exceptiontable[e].catchtype = NULL;
- else {
- m -> exceptiontable[e].catchtype =
- class_getconstant (c, idx, CONSTANT_Class);
+ m->exceptiontable[j].startpc = suck_u2(cb);
+ m->exceptiontable[j].endpc = suck_u2(cb);
+ m->exceptiontable[j].handlerpc = suck_u2(cb);
+
+ idx = suck_u2(cb);
+ if (!idx) {
+ m->exceptiontable[j].catchtype = NULL;
+
+ } else {
+ if (!(m->exceptiontable[j].catchtype =
+ class_getconstant(c, idx, CONSTANT_Class)))
+ return false;
+ }
+ }
+
+ if (!check_classbuffer_size(cb, 2))
+ return false;
+
+ codeattrnum = suck_u2(cb);
+
+ for (; codeattrnum > 0; codeattrnum--) {
+ utf *caname;
+
+ if (!check_classbuffer_size(cb, 2))
+ return false;
+
+ if (!(caname = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
+
+ if (caname == utf_linenumbertable) {
+ u2 lncid;
+
+ if (!check_classbuffer_size(cb, 4 + 2))
+ return false;
+
+ suck_u4(cb);
+ m->linenumbercount = suck_u2(cb);
+
+ if (!check_classbuffer_size(cb,
+ (2 + 2) * m->linenumbercount))
+ return false;
+
+ m->linenumbers = MNEW(lineinfo, m->linenumbercount);
+
+ for (lncid = 0; lncid < m->linenumbercount; lncid++) {
+ m->linenumbers[lncid].start_pc = suck_u2(cb);
+ m->linenumbers[lncid].line_number = suck_u2(cb);
}
- }
+ codeattrnum--;
- skipattributes ( suck_u2() );
+ if (!skipattributes(cb, codeattrnum))
+ return false;
+
+ break;
+
+ } else {
+ if (!skipattributebody(cb))
+ return false;
+ }
}
-
- }
-}
+ } else if (aname == utf_exceptions) {
+ s4 j;
-/********************* Function: method_free ***********************************
+ if (m->thrownexceptions) {
+ *exceptionptr =
+ new_classformaterror(c, "Multiple Exceptions attributes");
+ return false;
+ }
- frees all memory that was allocated for this method
+ if (!check_classbuffer_size(cb, 4 + 2))
+ return false;
-*******************************************************************************/
+ suck_u4(cb); /* length */
+ m->thrownexceptionscount = suck_u2(cb);
-static void method_free (methodinfo *m)
-{
- if (m->jcode) MFREE (m->jcode, u1, m->jcodelength);
- if (m->exceptiontable)
- MFREE (m->exceptiontable, exceptiontable, m->exceptiontablelength);
- if (m->mcode) CFREE (m->mcode, m->mcodelength);
- if (m->stubroutine) {
- if (m->flags & ACC_NATIVE) removenativestub (m->stubroutine);
- else removecompilerstub (m->stubroutine);
+ if (!check_classbuffer_size(cb, 2 * m->thrownexceptionscount))
+ return false;
+
+ m->thrownexceptions = MNEW(classinfo*, m->thrownexceptionscount);
+
+ for (j = 0; j < m->thrownexceptionscount; j++) {
+ if (!((m->thrownexceptions)[j] =
+ class_getconstant(c, suck_u2(cb), CONSTANT_Class)))
+ return false;
+ }
+
+ } else {
+ if (!skipattributebody(cb))
+ return false;
}
-}
+ }
+ if (!m->jcode && !(m->flags & (ACC_ABSTRACT | ACC_NATIVE))) {
+ *exceptionptr = new_classformaterror(c, "Missing Code attribute");
-/************** Function: method_display (debugging only) **************/
+ return false;
+ }
-void method_display (methodinfo *m)
-{
- printf (" ");
- printflags (m -> flags);
- printf (" ");
- utf_display (m -> name);
- printf (" ");
- utf_display (m -> descriptor);
- printf ("\n");
+ /* everything was ok */
+ /* utf_display(m->name);
+ printf("\nexceptiontablelength:%ld\n",m->exceptiontablelength);*/
+
+ return true;
}
-/******************** Function: method_canoverwrite ****************************
+/********************* Function: method_free ***********************************
- Check if m and old are identical with respect to type and name. This means
- that old can be overwritten with m.
-
-*******************************************************************************/
+ frees all memory that was allocated for this method
-static bool method_canoverwrite (methodinfo *m, methodinfo *old)
+*******************************************************************************/
+
+static void method_free(methodinfo *m)
{
- if (m->name != old->name) return false;
- if (m->descriptor != old->descriptor) return false;
- if (m->flags & ACC_STATIC) return false;
- return true;
-}
+ if (m->jcode)
+ MFREE(m->jcode, u1, m->jcodelength);
+ if (m->exceptiontable)
+ MFREE(m->exceptiontable, exceptiontable, m->exceptiontablelength);
+ if (m->mcode)
+ CFREE(m->mcode, m->mcodelength);
+ if (m->stubroutine) {
+ if (m->flags & ACC_NATIVE) {
+ removenativestub(m->stubroutine);
-/******************************************************************************/
-/************************ Functions for class *********************************/
-/******************************************************************************/
+ } else {
+ removecompilerstub(m->stubroutine);
+ }
+ }
+}
-/******************** function:: class_getconstant ******************************
+/************** Function: method_display (debugging only) **************/
- retrieves the value at position 'pos' of the constantpool of a class
- if the type of the value is other than 'ctype' the system is stopped
+void method_display(methodinfo *m)
+{
+ printf(" ");
+ printflags(m->flags);
+ printf(" ");
+ utf_display(m->name);
+ printf(" ");
+ utf_display(m->descriptor);
+ printf("\n");
+}
-*******************************************************************************/
+/************** Function: method_display_w_class (debugging only) **************/
-voidptr class_getconstant (classinfo *c, u4 pos, u4 ctype)
+void method_display_w_class(methodinfo *m)
{
- /* invalid position in constantpool */
- if (pos >= c->cpcount)
- panic ("Attempt to access constant outside range");
+ printflags(m->class->flags);
+ printf(" "); fflush(stdout);
+ utf_display(m->class->name);
+ printf(".");fflush(stdout);
+
+ printf(" ");
+ printflags(m->flags);
+ printf(" "); fflush(stdout);
+ utf_display(m->name);
+ printf(" "); fflush(stdout);
+ utf_display(m->descriptor);
+ printf("\n"); fflush(stdout);
+}
- /* check type of constantpool entry */
+/************** Function: method_display_flags_last (debugging only) **************/
- if (c->cptags[pos] != ctype) {
- class_showconstantpool(c);
- sprintf (logtext, "Type mismatch on constant: %d requested, %d here (class_getconstant)",
- (int) ctype, (int) c->cptags[pos] );
- error();
- }
-
- return c->cpinfos[pos];
+void method_display_flags_last(methodinfo *m)
+{
+ printf(" ");
+ utf_display(m->name);
+ printf(" ");
+ utf_display(m->descriptor);
+ printf(" ");
+ printflags(m->flags);
+ printf("\n");
}
-/********************* Function: class_constanttype ****************************
+/******************** Function: method_canoverwrite ****************************
- Determines the type of a class entry in the ConstantPool
+ Check if m and old are identical with respect to type and name. This means
+ that old can be overwritten with m.
*******************************************************************************/
-u4 class_constanttype (classinfo *c, u4 pos)
+static bool method_canoverwrite(methodinfo *m, methodinfo *old)
{
- if (pos >= c->cpcount)
- panic ("Attempt to access constant outside range");
- return c->cptags[pos];
+ if (m->name != old->name) return false;
+ if (m->descriptor != old->descriptor) return false;
+ if (m->flags & ACC_STATIC) return false;
+ return true;
}
*******************************************************************************/
-static void class_loadcpool (classinfo *c)
+static bool class_loadcpool(classbuffer *cb, classinfo *c)
{
/* The following structures are used to save information which cannot be
been traversed the references can be resolved.
(only in specific order) */
- /* CONSTANT_Class_info entries */
- typedef struct forward_class {
- struct forward_class *next;
- u2 thisindex;
- u2 name_index;
- } forward_class;
-
- /* CONSTANT_String */
- typedef struct forward_string {
- struct forward_string *next;
- u2 thisindex;
+ /* CONSTANT_Class entries */
+ typedef struct forward_class {
+ struct forward_class *next;
+ u2 thisindex;
+ u2 name_index;
+ } forward_class;
+
+ /* CONSTANT_String */
+ typedef struct forward_string {
+ struct forward_string *next;
+ u2 thisindex;
u2 string_index;
} forward_string;
} forward_nameandtype;
/* CONSTANT_Fieldref, CONSTANT_Methodref or CONSTANT_InterfaceMethodref */
- typedef struct forward_fieldmethint {
+ typedef struct forward_fieldmethint {
struct forward_fieldmethint *next;
u2 thisindex;
u1 tag;
u4 idx;
- long int dumpsize = dump_size ();
forward_class *forward_classes = NULL;
forward_string *forward_strings = NULL;
forward_nameandtype *forward_nameandtypes = NULL;
forward_fieldmethint *forward_fieldmethints = NULL;
- /* number of entries in the constant_pool table */
- u4 cpcount = c -> cpcount = suck_u2();
+ forward_class *nfc;
+ forward_string *nfs;
+ forward_nameandtype *nfn;
+ forward_fieldmethint *nff;
+
+ u4 cpcount;
+ u1 *cptags;
+ voidptr *cpinfos;
+
+ /* number of entries in the constant_pool table plus one */
+ if (!check_classbuffer_size(cb, 2))
+ return false;
+
+ cpcount = c->cpcount = suck_u2(cb);
+
/* allocate memory */
- u1 *cptags = c -> cptags = MNEW (u1, cpcount);
- voidptr *cpinfos = c -> cpinfos = MNEW (voidptr, cpcount);
+ cptags = c->cptags = MNEW(u1, cpcount);
+ cpinfos = c->cpinfos = MNEW(voidptr, cpcount);
-#ifdef STATISTICS
- count_const_pool_len += (sizeof(voidptr) + 1) * cpcount;
+ if (cpcount < 1) {
+ *exceptionptr = new_classformaterror(c, "Illegal constant pool size");
+ return false;
+ }
+
+#if defined(STATISTICS)
+ if (opt_stat)
+ count_const_pool_len += (sizeof(voidptr) + 1) * cpcount;
#endif
/* initialize constantpool */
- for (idx=0; idx<cpcount; idx++) {
+ for (idx = 0; idx < cpcount; idx++) {
cptags[idx] = CONSTANT_UNUSED;
cpinfos[idx] = NULL;
- }
+ }
- /******* first pass *******/
- /* entries which cannot be resolved now are written into
- temporary structures and traversed again later */
+ /******* first pass *******/
+ /* entries which cannot be resolved now are written into
+ temporary structures and traversed again later */
idx = 1;
while (idx < cpcount) {
+ u4 t;
+
/* get constant type */
- u4 t = suck_u1 ();
- switch ( t ) {
+ if (!check_classbuffer_size(cb, 1))
+ return false;
- case CONSTANT_Class: {
- forward_class *nfc = DNEW(forward_class);
+ t = suck_u1(cb);
- nfc -> next = forward_classes;
- forward_classes = nfc;
+ switch (t) {
+ case CONSTANT_Class:
+ nfc = NEW(forward_class);
- nfc -> thisindex = idx;
- /* reference to CONSTANT_NameAndType */
- nfc -> name_index = suck_u2 ();
+ nfc->next = forward_classes;
+ forward_classes = nfc;
- idx++;
- break;
- }
+ nfc->thisindex = idx;
+ /* reference to CONSTANT_NameAndType */
+ if (!check_classbuffer_size(cb, 2))
+ return false;
+
+ nfc->name_index = suck_u2(cb);
+
+ idx++;
+ break;
- case CONSTANT_Fieldref:
- case CONSTANT_Methodref:
- case CONSTANT_InterfaceMethodref: {
- forward_fieldmethint *nff = DNEW (forward_fieldmethint);
-
- nff -> next = forward_fieldmethints;
- forward_fieldmethints = nff;
-
- nff -> thisindex = idx;
- /* constant type */
- nff -> tag = t;
- /* class or interface type that contains the declaration of the field or method */
- nff -> class_index = suck_u2 ();
- /* name and descriptor of the field or method */
- nff -> nameandtype_index = suck_u2 ();
-
- idx ++;
- break;
- }
-
- case CONSTANT_String: {
- forward_string *nfs = DNEW (forward_string);
+ case CONSTANT_String:
+ nfs = NEW(forward_string);
- nfs -> next = forward_strings;
- forward_strings = nfs;
+ nfs->next = forward_strings;
+ forward_strings = nfs;
- nfs -> thisindex = idx;
- /* reference to CONSTANT_Utf8_info with string characters */
- nfs -> string_index = suck_u2 ();
+ nfs->thisindex = idx;
+
+ /* reference to CONSTANT_Utf8_info with string characters */
+ if (!check_classbuffer_size(cb, 2))
+ return false;
+
+ nfs->string_index = suck_u2(cb);
- idx ++;
- break;
- }
+ idx++;
+ break;
- case CONSTANT_NameAndType: {
- forward_nameandtype *nfn = DNEW (forward_nameandtype);
+ case CONSTANT_NameAndType:
+ nfn = NEW(forward_nameandtype);
- nfn -> next = forward_nameandtypes;
- forward_nameandtypes = nfn;
+ nfn->next = forward_nameandtypes;
+ forward_nameandtypes = nfn;
- nfn -> thisindex = idx;
- /* reference to CONSTANT_Utf8_info containing simple name */
- nfn -> name_index = suck_u2 ();
- /* reference to CONSTANT_Utf8_info containing field or method descriptor */
- nfn -> sig_index = suck_u2 ();
+ nfn->thisindex = idx;
+
+ if (!check_classbuffer_size(cb, 2 + 2))
+ return false;
+
+ /* reference to CONSTANT_Utf8_info containing simple name */
+ nfn->name_index = suck_u2(cb);
+
+ /* reference to CONSTANT_Utf8_info containing field or method
+ descriptor */
+ nfn->sig_index = suck_u2(cb);
- idx ++;
- break;
- }
+ idx++;
+ break;
- case CONSTANT_Integer: {
- constant_integer *ci = NEW (constant_integer);
+ case CONSTANT_Fieldref:
+ case CONSTANT_Methodref:
+ case CONSTANT_InterfaceMethodref:
+ nff = NEW(forward_fieldmethint);
+
+ nff->next = forward_fieldmethints;
+ forward_fieldmethints = nff;
-#ifdef STATISTICS
- count_const_pool_len += sizeof(constant_integer);
-#endif
+ nff->thisindex = idx;
+ /* constant type */
+ nff->tag = t;
+
+ if (!check_classbuffer_size(cb, 2 + 2))
+ return false;
+
+ /* class or interface type that contains the declaration of the
+ field or method */
+ nff->class_index = suck_u2(cb);
- ci -> value = suck_s4 ();
- cptags [idx] = CONSTANT_Integer;
- cpinfos [idx] = ci;
- idx ++;
+ /* name and descriptor of the field or method */
+ nff->nameandtype_index = suck_u2(cb);
+
+ idx++;
+ break;
- break;
- }
+ case CONSTANT_Integer: {
+ constant_integer *ci = NEW(constant_integer);
+
+#if defined(STATISTICS)
+ if (opt_stat)
+ count_const_pool_len += sizeof(constant_integer);
+#endif
+
+ if (!check_classbuffer_size(cb, 4))
+ return false;
+
+ ci->value = suck_s4(cb);
+ cptags[idx] = CONSTANT_Integer;
+ cpinfos[idx] = ci;
+
+ idx++;
+ break;
+ }
- case CONSTANT_Float: {
- constant_float *cf = NEW (constant_float);
+ case CONSTANT_Float: {
+ constant_float *cf = NEW(constant_float);
-#ifdef STATISTICS
- count_const_pool_len += sizeof(constant_float);
+#if defined(STATISTICS)
+ if (opt_stat)
+ count_const_pool_len += sizeof(constant_float);
#endif
- cf -> value = suck_float ();
- cptags [idx] = CONSTANT_Float;
- cpinfos[idx] = cf;
- idx ++;
- break;
- }
+ if (!check_classbuffer_size(cb, 4))
+ return false;
+
+ cf->value = suck_float(cb);
+ cptags[idx] = CONSTANT_Float;
+ cpinfos[idx] = cf;
+
+ idx++;
+ break;
+ }
- case CONSTANT_Long: {
- constant_long *cl = NEW(constant_long);
+ case CONSTANT_Long: {
+ constant_long *cl = NEW(constant_long);
-#ifdef STATISTICS
- count_const_pool_len += sizeof(constant_long);
+#if defined(STATISTICS)
+ if (opt_stat)
+ count_const_pool_len += sizeof(constant_long);
#endif
- cl -> value = suck_s8 ();
- cptags [idx] = CONSTANT_Long;
- cpinfos [idx] = cl;
- idx += 2;
- break;
- }
+ if (!check_classbuffer_size(cb, 8))
+ return false;
+
+ cl->value = suck_s8(cb);
+ cptags[idx] = CONSTANT_Long;
+ cpinfos[idx] = cl;
+ idx += 2;
+ if (idx > cpcount) {
+ *exceptionptr =
+ new_classformaterror(c, "Invalid constant pool entry");
+ return false;
+ }
+ break;
+ }
- case CONSTANT_Double: {
- constant_double *cd = NEW(constant_double);
+ case CONSTANT_Double: {
+ constant_double *cd = NEW(constant_double);
-#ifdef STATISTICS
- count_const_pool_len += sizeof(constant_double);
+#if defined(STATISTICS)
+ if (opt_stat)
+ count_const_pool_len += sizeof(constant_double);
#endif
- cd -> value = suck_double ();
- cptags [idx] = CONSTANT_Double;
- cpinfos [idx] = cd;
- idx += 2;
- break;
- }
+ if (!check_classbuffer_size(cb, 8))
+ return false;
+
+ cd->value = suck_double(cb);
+ cptags[idx] = CONSTANT_Double;
+ cpinfos[idx] = cd;
+ idx += 2;
+ if (idx > cpcount) {
+ *exceptionptr =
+ new_classformaterror(c, "Invalid constant pool entry");
+ return false;
+ }
+ break;
+ }
- case CONSTANT_Utf8: {
-
- /* number of bytes in the bytes array (not string-length) */
- u4 length = suck_u2();
- cptags [idx] = CONSTANT_Utf8;
- /* insert utf-string into the utf-symboltable */
- cpinfos [idx] = utf_new(classbuf_pos+1, length);
- /* skip bytes of the string */
- skip_nbytes(length);
- idx++;
- break;
- }
+ case CONSTANT_Utf8: {
+ u4 length;
+
+ /* number of bytes in the bytes array (not string-length) */
+ if (!check_classbuffer_size(cb, 2))
+ return false;
+
+ length = suck_u2(cb);
+ cptags[idx] = CONSTANT_Utf8;
+
+ /* validate the string */
+ if (!check_classbuffer_size(cb, length))
+ return false;
+
+ if (opt_verify &&
+ !is_valid_utf((char *) (cb->pos + 1),
+ (char *) (cb->pos + 1 + length))) {
+ dolog("Invalid UTF-8 string (constant pool index %d)",idx);
+ panic("Invalid UTF-8 string");
+ }
+ /* insert utf-string into the utf-symboltable */
+ cpinfos[idx] = utf_new_intern((char *) (cb->pos + 1), length);
+
+ /* skip bytes of the string (buffer size check above) */
+ skip_nbytes(cb, length);
+ idx++;
+ break;
+ }
- default:
- sprintf (logtext, "Unkown constant type: %d",(int) t);
- error ();
-
- } /* end switch */
-
- } /* end while */
-
+ default:
+ *exceptionptr =
+ new_classformaterror(c, "Illegal constant pool type");
+ return false;
+ } /* end switch */
+ } /* end while */
- /* resolve entries in temporary structures */
+ /* resolve entries in temporary structures */
while (forward_classes) {
utf *name =
- class_getconstant (c, forward_classes -> name_index, CONSTANT_Utf8);
+ class_getconstant(c, forward_classes->name_index, CONSTANT_Utf8);
- cptags [forward_classes -> thisindex] = CONSTANT_Class;
+ if (opt_verify && !is_valid_name_utf(name))
+ panic("Class reference with invalid name");
+
+ cptags[forward_classes->thisindex] = CONSTANT_Class;
/* retrieve class from class-table */
- cpinfos [forward_classes -> thisindex] = class_new (name);
+ if (opt_eager) {
+ classinfo *tc;
+ tc = class_new_intern(name);
- forward_classes = forward_classes -> next;
-
+ if (!class_load(tc))
+ return false;
+
+ /* link the class later, because we cannot link the class currently
+ loading */
+ list_addfirst(&unlinkedclasses, tc);
+
+ cpinfos[forward_classes->thisindex] = tc;
+
+ } else {
+ cpinfos[forward_classes->thisindex] = class_new(name);
}
+ nfc = forward_classes;
+ forward_classes = forward_classes->next;
+ FREE(nfc, forward_class);
+ }
+
while (forward_strings) {
- utf *text =
- class_getconstant (c, forward_strings -> string_index, CONSTANT_Utf8);
-/*
- log_text("forward_string:");
- printf( "classpoolid: %d\n",forward_strings -> thisindex);
- utf_display(text);
- log_text("\n------------------"); */
- /* resolve utf-string */
- cptags [forward_strings -> thisindex] = CONSTANT_String;
- cpinfos [forward_strings -> thisindex] = text;
+ utf *text =
+ class_getconstant(c, forward_strings->string_index, CONSTANT_Utf8);
+
+ /* resolve utf-string */
+ cptags[forward_strings->thisindex] = CONSTANT_String;
+ cpinfos[forward_strings->thisindex] = text;
- forward_strings = forward_strings -> next;
- }
+ nfs = forward_strings;
+ forward_strings = forward_strings->next;
+ FREE(nfs, forward_string);
+ }
while (forward_nameandtypes) {
- constant_nameandtype *cn = NEW (constant_nameandtype);
+ constant_nameandtype *cn = NEW(constant_nameandtype);
-#ifdef STATISTICS
- count_const_pool_len += sizeof(constant_nameandtype);
+#if defined(STATISTICS)
+ if (opt_stat)
+ count_const_pool_len += sizeof(constant_nameandtype);
#endif
/* resolve simple name and descriptor */
- cn -> name = class_getconstant
- (c, forward_nameandtypes -> name_index, CONSTANT_Utf8);
- cn -> descriptor = class_getconstant
- (c, forward_nameandtypes -> sig_index, CONSTANT_Utf8);
-
- cptags [forward_nameandtypes -> thisindex] = CONSTANT_NameAndType;
- cpinfos [forward_nameandtypes -> thisindex] = cn;
-
- forward_nameandtypes = forward_nameandtypes -> next;
+ cn->name = class_getconstant(c,
+ forward_nameandtypes->name_index,
+ CONSTANT_Utf8);
+
+ cn->descriptor = class_getconstant(c,
+ forward_nameandtypes->sig_index,
+ CONSTANT_Utf8);
+
+ if (opt_verify) {
+ /* check name */
+ if (!is_valid_name_utf(cn->name))
+ panic("NameAndType with invalid name");
+ /* disallow referencing <clinit> among others */
+ if (cn->name->text[0] == '<' && cn->name != utf_init)
+ panic("NameAndType with invalid special name");
}
+ cptags[forward_nameandtypes->thisindex] = CONSTANT_NameAndType;
+ cpinfos[forward_nameandtypes->thisindex] = cn;
+
+ nfn = forward_nameandtypes;
+ forward_nameandtypes = forward_nameandtypes->next;
+ FREE(nfn, forward_nameandtype);
+ }
- while (forward_fieldmethints) {
+ while (forward_fieldmethints) {
constant_nameandtype *nat;
- constant_FMIref *fmi = NEW (constant_FMIref);
+ constant_FMIref *fmi = NEW(constant_FMIref);
-#ifdef STATISTICS
- count_const_pool_len += sizeof(constant_FMIref);
+#if defined(STATISTICS)
+ if (opt_stat)
+ count_const_pool_len += sizeof(constant_FMIref);
#endif
/* resolve simple name and descriptor */
- nat = class_getconstant
- (c, forward_fieldmethints -> nameandtype_index, CONSTANT_NameAndType);
-
-#ifdef JOWENN_DEBUG
- log_text("trying to resolve:");
- log_text(nat->name->text);
- switch(forward_fieldmethints ->tag) {
- case CONSTANT_Fieldref:
- log_text("CONSTANT_Fieldref");
- break;
- case CONSTANT_InterfaceMethodref:
- log_text("CONSTANT_InterfaceMethodref");
- break;
- case CONSTANT_Methodref:
- log_text("CONSTANT_Methodref");
- break;
- }
-#endif
- fmi -> class = class_getconstant
- (c, forward_fieldmethints -> class_index, CONSTANT_Class);
- fmi -> name = nat -> name;
- fmi -> descriptor = nat -> descriptor;
-
- cptags [forward_fieldmethints -> thisindex] = forward_fieldmethints -> tag;
- cpinfos [forward_fieldmethints -> thisindex] = fmi;
+ nat = class_getconstant(c,
+ forward_fieldmethints->nameandtype_index,
+ CONSTANT_NameAndType);
+
+ fmi->class = class_getconstant(c,
+ forward_fieldmethints->class_index,
+ CONSTANT_Class);
+ fmi->name = nat->name;
+ fmi->descriptor = nat->descriptor;
+
+ cptags[forward_fieldmethints->thisindex] = forward_fieldmethints->tag;
+ cpinfos[forward_fieldmethints->thisindex] = fmi;
- switch (forward_fieldmethints -> tag) {
+ switch (forward_fieldmethints->tag) {
case CONSTANT_Fieldref: /* check validity of descriptor */
- checkfielddescriptor (fmi->descriptor->text,utf_end(fmi->descriptor));
- break;
- case CONSTANT_InterfaceMethodref:
+ checkfielddescriptor(fmi->descriptor->text,
+ utf_end(fmi->descriptor));
+ break;
+ case CONSTANT_InterfaceMethodref:
case CONSTANT_Methodref: /* check validity of descriptor */
- checkmethoddescriptor (fmi->descriptor);
- break;
- }
-
- forward_fieldmethints = forward_fieldmethints -> next;
-
+ checkmethoddescriptor(c, fmi->descriptor);
+ break;
}
+
+ nff = forward_fieldmethints;
+ forward_fieldmethints = forward_fieldmethints->next;
+ FREE(nff, forward_fieldmethint);
+ }
-/* class_showconstantpool(c); */
+ /* everything was ok */
- dump_release (dumpsize);
+ return true;
}
*******************************************************************************/
-static int class_load (classinfo *c)
+classinfo *class_load_intern(classbuffer *cb);
+
+classinfo *class_load(classinfo *c)
+{
+ classbuffer *cb;
+ classinfo *r;
+
+ /* enter a monitor on the class */
+
+ builtin_monitorenter((java_objectheader *) c);
+
+ /* maybe the class is already loaded */
+ if (c->loaded) {
+ builtin_monitorexit((java_objectheader *) c);
+
+ return c;
+ }
+
+ /* measure time */
+
+ if (getcompilingtime)
+ compilingtime_stop();
+
+ if (getloadingtime)
+ loadingtime_start();
+
+ /* load classdata, throw exception on error */
+
+ if ((cb = suck_start(c)) == NULL) {
+ /* this means, the classpath was not set properly */
+ if (c->name == utf_java_lang_Object)
+ throw_cacao_exception_exit(string_java_lang_NoClassDefFoundError,
+ "java/lang/Object");
+
+ *exceptionptr =
+ new_exception_utfmessage(string_java_lang_NoClassDefFoundError,
+ c->name);
+
+ builtin_monitorexit((java_objectheader *) c);
+
+ return NULL;
+ }
+
+ /* call the internal function */
+ r = class_load_intern(cb);
+
+ /* if return value is NULL, we had a problem and the class is not loaded */
+ if (!r) {
+ c->loaded = false;
+
+ /* now free the allocated memory, otherwise we could ran into a DOS */
+ class_remove(c);
+ }
+
+ /* free memory */
+ suck_stop(cb);
+
+ /* measure time */
+
+ if (getloadingtime)
+ loadingtime_stop();
+
+ if (getcompilingtime)
+ compilingtime_start();
+
+ /* leave the monitor */
+
+ builtin_monitorexit((java_objectheader *) c);
+
+ return r;
+}
+
+
+classinfo *class_load_intern(classbuffer *cb)
{
+ classinfo *c;
+ classinfo *tc;
u4 i;
- u4 mi,ma;
+ u4 ma, mi;
+ char msg[MAXLOGTEXT]; /* maybe we get an exception */
-#ifdef STATISTICS
- count_class_loads++;
+ /* get the classbuffer's class */
+ c = cb->class;
+
+ /* maybe the class is already loaded */
+ if (c->loaded)
+ return c;
+
+#if defined(STATISTICS)
+ if (opt_stat)
+ count_class_loads++;
#endif
/* output for debugging purposes */
- if (loadverbose) {
-
- sprintf (logtext, "Loading class: ");
- utf_sprint (logtext+strlen(logtext), c->name );
- dolog();
- }
+ if (loadverbose)
+ log_message_class("Loading class: ", c);
- /* load classdata, throw exception on error */
+ /* class is somewhat loaded */
+ c->loaded = true;
- if (!suck_start (c->name)) {
- throw_classnotfoundexception2(c->name);
- return false;
+ if (!check_classbuffer_size(cb, 4 + 2 + 2))
+ return NULL;
+
+ /* check signature */
+ if (suck_u4(cb) != MAGIC) {
+ *exceptionptr = new_classformaterror(c, "Bad magic number");
+
+ return NULL;
}
-
- /* check signature */
- if (suck_u4() != MAGIC) panic("Can not find class-file signature");
+
/* check version */
- mi = suck_u2();
- ma = suck_u2();
- if (ma != MAJOR_VERSION && (ma != MAJOR_VERSION+1 || mi != 0)) {
- sprintf (logtext, "File version %d.%d is not supported",
- (int) ma, (int) mi);
- error();
- }
+ mi = suck_u2(cb);
+ ma = suck_u2(cb);
+
+ if (!(ma < MAJOR_VERSION || (ma == MAJOR_VERSION && mi <= MINOR_VERSION))) {
+ *exceptionptr =
+ new_unsupportedclassversionerror(c,
+ "Unsupported major.minor version %d.%d",
+ ma, mi);
+
+ return NULL;
+ }
+
+ /* load the constant pool */
+ if (!class_loadcpool(cb, c))
+ return NULL;
- class_loadcpool (c);
/*JOWENN*/
- c->erroneous_state=0;
- c->initializing_thread=0;
+ c->erroneous_state = 0;
+ c->initializing_thread = 0;
/*JOWENN*/
- c -> classUsed = NOTUSED; /* not used initially CO-RT */
- c -> impldBy = NULL;
+ c->classUsed = NOTUSED; /* not used initially CO-RT */
+ c->impldBy = NULL;
/* ACC flags */
- c -> flags = suck_u2 ();
+ if (!check_classbuffer_size(cb, 2))
+ return NULL;
+
+ c->flags = suck_u2(cb);
+ /*if (!(c->flags & ACC_PUBLIC)) { log_text("CLASS NOT PUBLIC"); } JOWENN*/
+
+ /* check ACC flags consistency */
+ if (c->flags & ACC_INTERFACE) {
+ if (!(c->flags & ACC_ABSTRACT)) {
+ /* We work around this because interfaces in JDK 1.1 are
+ * not declared abstract. */
+
+ c->flags |= ACC_ABSTRACT;
+ /* panic("Interface class not declared abstract"); */
+ }
+
+ if (c->flags & ACC_FINAL) {
+ *exceptionptr =
+ new_classformaterror(c,
+ "Illegal class modifiers: 0x%X", c->flags);
+
+ return NULL;
+ }
+
+ if (c->flags & ACC_SUPER) {
+ c->flags &= ~ACC_SUPER; /* kjc seems to set this on interfaces */
+ }
+ }
+
+ if ((c->flags & (ACC_ABSTRACT | ACC_FINAL)) == (ACC_ABSTRACT | ACC_FINAL)) {
+ *exceptionptr =
+ new_classformaterror(c, "Illegal class modifiers: 0x%X", c->flags);
+
+ return NULL;
+ }
+
+ if (!check_classbuffer_size(cb, 2 + 2))
+ return NULL;
+
/* this class */
- suck_u2 ();
+ i = suck_u2(cb);
+ if (!(tc = class_getconstant(c, i, CONSTANT_Class)))
+ return NULL;
+
+ if (tc != c) {
+ utf_sprint(msg, c->name);
+ sprintf(msg + strlen(msg), " (wrong name: ");
+ utf_sprint(msg + strlen(msg), tc->name);
+ sprintf(msg + strlen(msg), ")");
+
+ *exceptionptr =
+ new_exception_message(string_java_lang_NoClassDefFoundError, msg);
+
+ return NULL;
+ }
/* retrieve superclass */
- if ( (i = suck_u2 () ) ) {
- c -> super = class_getconstant (c, i, CONSTANT_Class);
+ if ((i = suck_u2(cb))) {
+ if (!(c->super = class_getconstant(c, i, CONSTANT_Class)))
+ return NULL;
+
+ /* java.lang.Object may not have a super class. */
+ if (c->name == utf_java_lang_Object) {
+ *exceptionptr =
+ new_exception_message(string_java_lang_ClassFormatError,
+ "java.lang.Object with superclass");
+
+ return NULL;
+ }
+
+ /* Interfaces must have java.lang.Object as super class. */
+ if ((c->flags & ACC_INTERFACE) &&
+ c->super->name != utf_java_lang_Object) {
+ *exceptionptr =
+ new_exception_message(string_java_lang_ClassFormatError,
+ "Interfaces must have java.lang.Object as superclass");
+
+ return NULL;
}
- else {
- c -> super = NULL;
+
+ } else {
+ c->super = NULL;
+
+ /* This is only allowed for java.lang.Object. */
+ if (c->name != utf_java_lang_Object) {
+ *exceptionptr = new_classformaterror(c, "Bad superclass index");
+
+ return NULL;
}
+ }
/* retrieve interfaces */
- c -> interfacescount = suck_u2 ();
- c -> interfaces = MNEW (classinfo*, c -> interfacescount);
- for (i=0; i < c -> interfacescount; i++) {
- c -> interfaces [i] =
- class_getconstant (c, suck_u2(), CONSTANT_Class);
- }
+ if (!check_classbuffer_size(cb, 2))
+ return NULL;
+
+ c->interfacescount = suck_u2(cb);
+
+ if (!check_classbuffer_size(cb, 2 * c->interfacescount))
+ return NULL;
+
+ c->interfaces = MNEW(classinfo*, c->interfacescount);
+ for (i = 0; i < c->interfacescount; i++) {
+ if (!(c->interfaces[i] = class_getconstant(c, suck_u2(cb), CONSTANT_Class)))
+ return NULL;
+ }
/* load fields */
- c -> fieldscount = suck_u2 ();
-/* utf_display(c->name);
- printf(" ,Fieldscount: %d\n",c->fieldscount);*/
+ if (!check_classbuffer_size(cb, 2))
+ return NULL;
- c -> fields = GCNEW (fieldinfo, c -> fieldscount);
- for (i=0; i < c -> fieldscount; i++) {
- field_load (&(c->fields[i]), c);
- }
+ c->fieldscount = suck_u2(cb);
+ c->fields = GCNEW(fieldinfo, c->fieldscount);
+/* c->fields = MNEW(fieldinfo, c->fieldscount); */
+ for (i = 0; i < c->fieldscount; i++) {
+ if (!field_load(cb, c, &(c->fields[i])))
+ return NULL;
+ }
/* load methods */
- c -> methodscount = suck_u2 ();
- c -> methods = MNEW (methodinfo, c -> methodscount);
- for (i=0; i < c -> methodscount; i++) {
- method_load (&(c -> methods [i]), c);
+ if (!check_classbuffer_size(cb, 2))
+ return NULL;
+
+ c->methodscount = suck_u2(cb);
+ c->methods = GCNEW(methodinfo, c->methodscount);
+/* c->methods = MNEW(methodinfo, c->methodscount); */
+ for (i = 0; i < c->methodscount; i++) {
+ if (!method_load(cb, c, &(c->methods[i])))
+ return NULL;
+ }
+
+ /* Check if all fields and methods can be uniquely
+ * identified by (name,descriptor). */
+ if (opt_verify) {
+ /* We use a hash table here to avoid making the
+ * average case quadratic in # of methods, fields.
+ */
+ static int shift = 0;
+ u2 *hashtab;
+ u2 *next; /* for chaining colliding hash entries */
+ size_t len;
+ size_t hashlen;
+ u2 index;
+ u2 old;
+
+ /* Allocate hashtable */
+ len = c->methodscount;
+ if (len < c->fieldscount) len = c->fieldscount;
+ hashlen = 5 * len;
+ hashtab = MNEW(u2,(hashlen + len));
+ next = hashtab + hashlen;
+
+ /* Determine bitshift (to get good hash values) */
+ if (!shift) {
+ len = sizeof(utf);
+ while (len) {
+ len >>= 1;
+ shift++;
+ }
}
-#ifdef STATISTICS
- count_class_infos += sizeof(classinfo*) * c -> interfacescount;
- count_class_infos += sizeof(fieldinfo) * c -> fieldscount;
- count_class_infos += sizeof(methodinfo) * c -> methodscount;
+ /* Check fields */
+ memset(hashtab, 0, sizeof(u2) * (hashlen + len));
+
+ for (i = 0; i < c->fieldscount; ++i) {
+ fieldinfo *fi = c->fields + i;
+
+ /* It's ok if we lose bits here */
+ index = ((((size_t) fi->name) +
+ ((size_t) fi->descriptor)) >> shift) % hashlen;
+
+ if ((old = hashtab[index])) {
+ old--;
+ next[i] = old;
+ do {
+ if (c->fields[old].name == fi->name &&
+ c->fields[old].descriptor == fi->descriptor) {
+ *exceptionptr =
+ new_classformaterror(c,
+ "Repetitive field name/signature");
+
+ return NULL;
+ }
+ } while ((old = next[old]));
+ }
+ hashtab[index] = i + 1;
+ }
+
+ /* Check methods */
+ memset(hashtab, 0, sizeof(u2) * (hashlen + hashlen/5));
+
+ for (i = 0; i < c->methodscount; ++i) {
+ methodinfo *mi = c->methods + i;
+
+ /* It's ok if we lose bits here */
+ index = ((((size_t) mi->name) +
+ ((size_t) mi->descriptor)) >> shift) % hashlen;
+
+ /*{ JOWENN
+ int dbg;
+ for (dbg=0;dbg<hashlen+hashlen/5;++dbg){
+ printf("Hash[%d]:%d\n",dbg,hashtab[dbg]);
+ }
+ }*/
+
+ if ((old = hashtab[index])) {
+ old--;
+ next[i] = old;
+ do {
+ if (c->methods[old].name == mi->name &&
+ c->methods[old].descriptor == mi->descriptor) {
+ *exceptionptr =
+ new_classformaterror(c,
+ "Repetitive method name/signature");
+
+ return NULL;
+ }
+ } while ((old = next[old]));
+ }
+ hashtab[index] = i + 1;
+ }
+
+ MFREE(hashtab, u2, (hashlen + len));
+ }
+
+#if defined(STATISTICS)
+ if (opt_stat) {
+ count_class_infos += sizeof(classinfo*) * c->interfacescount;
+ count_class_infos += sizeof(fieldinfo) * c->fieldscount;
+ count_class_infos += sizeof(methodinfo) * c->methodscount;
+ }
#endif
- /* load variable-length attribute structures */
- attribute_load (suck_u2(), c);
+ /* load attribute structures */
+ if (!check_classbuffer_size(cb, 2))
+ return NULL;
- /* free memory */
- suck_stop ();
+ if (!attribute_load(cb, c, suck_u2(cb)))
+ return NULL;
+
+#if 0
+ /* Pre java 1.5 version don't check this. This implementation is like
+ java 1.5 do it: for class file version 45.3 we don't check it, older
+ versions are checked.
+ */
+ if ((ma == 45 && mi > 3) || ma > 45) {
+ /* check if all data has been read */
+ s4 classdata_left = ((cb->data + cb->size) - cb->pos - 1);
+
+ if (classdata_left > 0) {
+ *exceptionptr =
+ new_classformaterror(c, "Extra bytes at the end of class file");
+ return NULL;
+ }
+ }
+#endif
- /* remove class from list of unloaded classes and
- add to list of unlinked classes */
- list_remove (&unloadedclasses, c);
- list_addlast (&unlinkedclasses, c);
+ if (loadverbose)
+ log_message_class("Loading done class: ", c);
- return true;
+ return c;
}
-/************** internal Function: class_highestinterface ***********************
+/************** internal Function: class_highestinterface **********************
Used by the function class_link to determine the amount of memory needed
for the interface table.
*******************************************************************************/
-static s4 class_highestinterface (classinfo *c)
+static s4 class_highestinterface(classinfo *c)
{
s4 h;
s4 i;
- if ( ! (c->flags & ACC_INTERFACE) ) {
- sprintf (logtext, "Interface-methods count requested for non-interface: ");
- utf_sprint (logtext+strlen(logtext), c->name);
- error();
- }
-
+ /* check for ACC_INTERFACE bit already done in class_link_intern */
+
h = c->index;
- for (i=0; i<c->interfacescount; i++) {
- s4 h2 = class_highestinterface (c->interfaces[i]);
- if (h2>h) h=h2;
- }
+ for (i = 0; i < c->interfacescount; i++) {
+ s4 h2 = class_highestinterface(c->interfaces[i]);
+ if (h2 > h) h = h2;
+ }
+
return h;
}
/* class_addinterface **********************************************************
- Is needed by class_link for adding a VTBL to a class. All interfaces
- implemented by ic are added as well.
+ Is needed by class_link for adding a VTBL to a class. All interfaces
+ implemented by ic are added as well.
-*******************************************************************************/
+*******************************************************************************/
-static void class_addinterface (classinfo *c, classinfo *ic)
+static void class_addinterface(classinfo *c, classinfo *ic)
{
s4 j, m;
- s4 i = ic->index;
- vftbl *vftbl = c->vftbl;
-
- if (i >= vftbl->interfacetablelength)
+ s4 i = ic->index;
+ vftbl_t *v = c->vftbl;
+
+ if (i >= v->interfacetablelength)
panic ("Inernal error: interfacetable overflow");
- if (vftbl->interfacetable[-i])
+
+ if (v->interfacetable[-i])
return;
if (ic->methodscount == 0) { /* fake entry needed for subtype test */
- vftbl->interfacevftbllength[i] = 1;
- vftbl->interfacetable[-i] = MNEW(methodptr, 1);
- vftbl->interfacetable[-i][0] = NULL;
- }
- else {
- vftbl->interfacevftbllength[i] = ic->methodscount;
- vftbl->interfacetable[-i] = MNEW(methodptr, ic->methodscount);
-
-#ifdef STATISTICS
- count_vftbl_len += sizeof(methodptr) *
- (ic->methodscount + (ic->methodscount == 0));
+ v->interfacevftbllength[i] = 1;
+ v->interfacetable[-i] = MNEW(methodptr, 1);
+ v->interfacetable[-i][0] = NULL;
+
+ } else {
+ v->interfacevftbllength[i] = ic->methodscount;
+ v->interfacetable[-i] = MNEW(methodptr, ic->methodscount);
+
+#if defined(STATISTICS)
+ if (opt_stat)
+ count_vftbl_len += sizeof(methodptr) *
+ (ic->methodscount + (ic->methodscount == 0));
#endif
- for (j=0; j<ic->methodscount; j++) {
+ for (j = 0; j < ic->methodscount; j++) {
classinfo *sc = c;
while (sc) {
for (m = 0; m < sc->methodscount; m++) {
methodinfo *mi = &(sc->methods[m]);
if (method_canoverwrite(mi, &(ic->methods[j]))) {
- vftbl->interfacetable[-i][j] =
- vftbl->table[mi->vftblindex];
+ v->interfacetable[-i][j] = v->table[mi->vftblindex];
goto foundmethod;
- }
}
- sc = sc->super;
}
- foundmethod: ;
+ sc = sc->super;
}
+ foundmethod:
+ ;
}
+ }
for (j = 0; j < ic->interfacescount; j++)
class_addinterface(c, ic->interfaces[j]);
*******************************************************************************/
-void
-class_new_array(classinfo *c)
+void class_new_array(classinfo *c)
{
classinfo *comp = NULL;
methodinfo *clone;
int namelen;
- /* Array classes are not loaded from classfiles. */
- list_remove (&unloadedclasses, c);
-
/* Check array class name */
namelen = c->name->blength;
if (namelen < 2 || c->name->text[0] != '[')
- panic("Invalid array class name.");
+ panic("Invalid array class name");
/* Check the component type */
switch (c->name->text[1]) {
- case '[':
- /* c is an array of arrays. We have to create the component class. */
- comp = class_new(utf_new(c->name->text + 1,namelen - 1));
- break;
+ case '[':
+ /* c is an array of arrays. We have to create the component class. */
+ if (opt_eager) {
+ comp = class_new_intern(utf_new_intern(c->name->text + 1,
+ namelen - 1));
+ class_load(comp);
+ list_addfirst(&unlinkedclasses, comp);
- case 'L':
- /* c is an array of objects. */
- if (namelen < 4 || c->name->text[namelen-1] != ';')
- panic("Invalid array class name.");
- comp = class_new(utf_new(c->name->text + 2,namelen - 3));
- break;
+ } else {
+ comp = class_new(utf_new_intern(c->name->text + 1, namelen - 1));
+ }
+ break;
+
+ case 'L':
+ /* c is an array of objects. */
+ if (namelen < 4 || c->name->text[namelen - 1] != ';')
+ panic("Invalid array class name");
+
+ if (opt_eager) {
+ comp = class_new_intern(utf_new_intern(c->name->text + 2,
+ namelen - 3));
+ class_load(comp);
+ list_addfirst(&unlinkedclasses, comp);
+
+ } else {
+ comp = class_new(utf_new_intern(c->name->text + 2, namelen - 3));
+ }
+ break;
}
/* Setup the array class */
c->super = class_java_lang_Object;
+ c->flags = ACC_PUBLIC | ACC_FINAL | ACC_ABSTRACT;
c->interfacescount = 2;
- c->interfaces = MNEW(classinfo*,2);
- c->interfaces[0] = class_java_lang_Cloneable;
- c->interfaces[1] = class_java_io_Serializable;
+ c->interfaces = MNEW(classinfo*, 2);
+
+ if (opt_eager) {
+ classinfo *tc;
+
+ tc = class_new_intern(utf_new_char("java/lang/Cloneable"));
+ class_load(tc);
+ list_addfirst(&unlinkedclasses, tc);
+ c->interfaces[0] = tc;
+
+ tc = class_new_intern(utf_new_char("java/io/Serializable"));
+ class_load(tc);
+ list_addfirst(&unlinkedclasses, tc);
+ c->interfaces[1] = tc;
+
+ } else {
+ c->interfaces[0] = class_new(utf_new_char("java/lang/Cloneable"));
+ c->interfaces[1] = class_new(utf_new_char("java/io/Serializable"));
+ }
c->methodscount = 1;
- c->methods = MNEW (methodinfo, c->methodscount);
+ c->methods = MNEW(methodinfo, c->methodscount);
clone = c->methods;
- memset(clone,0,sizeof(methodinfo));
- clone->flags = ACC_PUBLIC; /* XXX protected? */
+ memset(clone, 0, sizeof(methodinfo));
+ clone->flags = ACC_PUBLIC;
clone->name = utf_new_char("clone");
clone->descriptor = utf_new_char("()Ljava/lang/Object;");
clone->class = c;
- clone->stubroutine = createnativestub(&builtin_clone_array,clone);
- clone->monoPoly = MONO; /* XXX should be poly? */
+ clone->stubroutine = createnativestub((functionptr) &builtin_clone_array, clone);
+ clone->monoPoly = MONO;
/* XXX: field: length? */
- /* The array class has to be linked */
- list_addlast(&unlinkedclasses,c);
-
- /*
- * Array classes which are created after the other classes have been
- * loaded and linked are linked explicitely.
- */
- if (loader_inited)
- loader_load(c->name);
+ /* array classes are not loaded from class files */
+ c->loaded = true;
}
+
/****************** Function: class_link_array *********************************
This function is called by class_link to create the
*******************************************************************************/
-static
-arraydescriptor *
-class_link_array(classinfo *c)
+static arraydescriptor *class_link_array(classinfo *c)
{
classinfo *comp = NULL;
- int namelen = c->name->blength;
+ s4 namelen = c->name->blength;
arraydescriptor *desc;
- vftbl *compvftbl;
+ vftbl_t *compvftbl;
/* Check the component type */
switch (c->name->text[1]) {
- case '[':
- /* c is an array of arrays. */
- comp = class_get(utf_new(c->name->text + 1,namelen - 1));
- if (!comp) panic("Could not find component array class.");
- break;
-
- case 'L':
- /* c is an array of objects. */
- comp = class_get(utf_new(c->name->text + 2,namelen - 3));
- if (!comp) panic("Could not find component class.");
- break;
+ case '[':
+ /* c is an array of arrays. */
+ comp = class_new(utf_new_intern(c->name->text + 1, namelen - 1));
+ if (!comp)
+ panic("Could not find component array class.");
+ break;
+
+ case 'L':
+ /* c is an array of objects. */
+ comp = class_new(utf_new_intern(c->name->text + 2, namelen - 3));
+ if (!comp)
+ panic("Could not find component class.");
+ break;
}
- /* If the component type has not been linked return NULL */
- if (comp && !comp->linked)
- return NULL;
+ /* If the component type has not been linked, link it now */
+ if (comp && !comp->linked) {
+ if (!comp->loaded)
+ if (!class_load(comp))
+ return NULL;
+
+ if (!class_link(comp))
+ return NULL;
+ }
/* Allocate the arraydescriptor */
desc = NEW(arraydescriptor);
/* c is an array of references */
desc->arraytype = ARRAYTYPE_OBJECT;
desc->componentsize = sizeof(void*);
- desc->dataoffset = OFFSET(java_objectarray,data);
+ desc->dataoffset = OFFSET(java_objectarray, data);
compvftbl = comp->vftbl;
if (!compvftbl)
- panic("Component class has no vftbl.");
+ panic("Component class has no vftbl");
desc->componentvftbl = compvftbl;
if (compvftbl->arraydesc) {
desc->elementvftbl = compvftbl->arraydesc->elementvftbl;
+ if (compvftbl->arraydesc->dimension >= 255)
+ panic("Creating array of dimension >255");
desc->dimension = compvftbl->arraydesc->dimension + 1;
- }
- else {
+ desc->elementtype = compvftbl->arraydesc->elementtype;
+
+ } else {
desc->elementvftbl = compvftbl;
desc->dimension = 1;
+ desc->elementtype = ARRAYTYPE_OBJECT;
}
- }
- else {
+
+ } else {
/* c is an array of a primitive type */
switch (c->name->text[1]) {
- case 'Z': desc->arraytype = ARRAYTYPE_BOOLEAN;
- desc->dataoffset = OFFSET(java_booleanarray,data);
- desc->componentsize = sizeof(u1); break;
- case 'B': desc->arraytype = ARRAYTYPE_BYTE;
- desc->dataoffset = OFFSET(java_bytearray,data);
- desc->componentsize = sizeof(u1); break;
- case 'C': desc->arraytype = ARRAYTYPE_CHAR;
- desc->dataoffset = OFFSET(java_chararray,data);
- desc->componentsize = sizeof(u2); break;
- case 'D': desc->arraytype = ARRAYTYPE_DOUBLE;
- desc->dataoffset = OFFSET(java_doublearray,data);
- desc->componentsize = sizeof(double); break;
- case 'F': desc->arraytype = ARRAYTYPE_FLOAT;
- desc->dataoffset = OFFSET(java_floatarray,data);
- desc->componentsize = sizeof(float); break;
- case 'I': desc->arraytype = ARRAYTYPE_INT;
- desc->dataoffset = OFFSET(java_intarray,data);
- desc->componentsize = sizeof(s4); break;
- case 'J': desc->arraytype = ARRAYTYPE_LONG;
- desc->dataoffset = OFFSET(java_longarray,data);
- desc->componentsize = sizeof(s8); break;
- case 'S': desc->arraytype = ARRAYTYPE_SHORT;
- desc->dataoffset = OFFSET(java_shortarray,data);
- desc->componentsize = sizeof(s2); break;
- default:
- panic("Invalid array class name");
+ case 'Z':
+ desc->arraytype = ARRAYTYPE_BOOLEAN;
+ desc->dataoffset = OFFSET(java_booleanarray,data);
+ desc->componentsize = sizeof(u1);
+ break;
+
+ case 'B':
+ desc->arraytype = ARRAYTYPE_BYTE;
+ desc->dataoffset = OFFSET(java_bytearray,data);
+ desc->componentsize = sizeof(u1);
+ break;
+
+ case 'C':
+ desc->arraytype = ARRAYTYPE_CHAR;
+ desc->dataoffset = OFFSET(java_chararray,data);
+ desc->componentsize = sizeof(u2);
+ break;
+
+ case 'D':
+ desc->arraytype = ARRAYTYPE_DOUBLE;
+ desc->dataoffset = OFFSET(java_doublearray,data);
+ desc->componentsize = sizeof(double);
+ break;
+
+ case 'F':
+ desc->arraytype = ARRAYTYPE_FLOAT;
+ desc->dataoffset = OFFSET(java_floatarray,data);
+ desc->componentsize = sizeof(float);
+ break;
+
+ case 'I':
+ desc->arraytype = ARRAYTYPE_INT;
+ desc->dataoffset = OFFSET(java_intarray,data);
+ desc->componentsize = sizeof(s4);
+ break;
+
+ case 'J':
+ desc->arraytype = ARRAYTYPE_LONG;
+ desc->dataoffset = OFFSET(java_longarray,data);
+ desc->componentsize = sizeof(s8);
+ break;
+
+ case 'S':
+ desc->arraytype = ARRAYTYPE_SHORT;
+ desc->dataoffset = OFFSET(java_shortarray,data);
+ desc->componentsize = sizeof(s2);
+ break;
+
+ default:
+ panic("Invalid array class name");
}
desc->componentvftbl = NULL;
desc->elementvftbl = NULL;
desc->dimension = 1;
+ desc->elementtype = desc->arraytype;
}
return desc;
}
+
/********************** Function: class_link ***********************************
- Tries to link a class. The super class and every implemented interface must
- already have been linked. The function calculates the length in bytes that
+ Tries to link a class. The function calculates the length in bytes that
an instance of this class requires as well as the VTBL for methods and
interface methods.
- If the class can be linked, it is removed from the list 'unlinkedclasses'
- and added to 'linkedclasses'. Otherwise, it is moved to the end of
- 'unlinkedclasses'.
+*******************************************************************************/
- Attention: If cyclical class definitions are encountered, the program gets
- into an infinite loop (we'll have to work that out)
+static classinfo *class_link_intern(classinfo *c);
-*******************************************************************************/
+classinfo *class_link(classinfo *c)
+{
+ classinfo *r;
+
+ /* enter a monitor on the class */
+
+ builtin_monitorenter((java_objectheader *) c);
+
+ /* maybe the class is already linked */
+ if (c->linked) {
+ builtin_monitorexit((java_objectheader *) c);
+
+ return c;
+ }
+
+ /* measure time */
+
+ if (getcompilingtime)
+ compilingtime_stop();
+
+ if (getloadingtime)
+ loadingtime_start();
+
+ /* call the internal function */
+ r = class_link_intern(c);
+
+ /* if return value is NULL, we had a problem and the class is not linked */
+ if (!r)
+ c->linked = false;
+
+ /* measure time */
+
+ if (getloadingtime)
+ loadingtime_stop();
+
+ if (getcompilingtime)
+ compilingtime_start();
+
+ /* leave the monitor */
-void class_link(classinfo *c)
+ builtin_monitorexit((java_objectheader *) c);
+
+ return r;
+}
+
+
+static classinfo *class_link_intern(classinfo *c)
{
s4 supervftbllength; /* vftbllegnth of super class */
s4 vftbllength; /* vftbllength of current class */
s4 interfacetablelength; /* interface table length */
- classinfo *super = c->super; /* super class */
- classinfo *ic, *c2; /* intermediate class variables */
- vftbl *v; /* vftbl of current class */
+ classinfo *super; /* super class */
+ classinfo *tc; /* temporary class variable */
+ vftbl_t *v; /* vftbl of current class */
s4 i; /* interface/method/field counter */
- arraydescriptor *arraydesc = NULL; /* descriptor for array classes */
+ arraydescriptor *arraydesc; /* descriptor for array classes */
+ /* maybe the class is already linked */
+ if (c->linked)
+ return c;
- /* check if all superclasses are already linked, if not put c at end of
- unlinked list and return. Additionally initialize class fields. */
+ /* maybe the class is not loaded */
+ if (!c->loaded)
+ if (!class_load(c))
+ return NULL;
- /* check interfaces */
+ if (linkverbose)
+ log_message_class("Linking class: ", c);
+
+ /* ok, this class is somewhat linked */
+ c->linked = true;
+
+ arraydesc = NULL;
+
+ /* check interfaces */
for (i = 0; i < c->interfacescount; i++) {
- ic = c->interfaces[i];
- if (!ic->linked) {
- list_remove(&unlinkedclasses, c);
- list_addlast(&unlinkedclasses, c);
- return;
+ tc = c->interfaces[i];
+
+ /* detect circularity */
+ if (tc == c) {
+ *exceptionptr =
+ new_exception_utfmessage(string_java_lang_ClassCircularityError,
+ c->name);
+ return NULL;
+ }
+
+ if (!tc->loaded)
+ if (!class_load(tc))
+ return NULL;
+
+ if (!(tc->flags & ACC_INTERFACE)) {
+ *exceptionptr =
+ new_exception_message(string_java_lang_IncompatibleClassChangeError,
+ "Implementing class");
+ return NULL;
}
+
+ if (!tc->linked)
+ if (!class_link(tc))
+ return NULL;
}
- /* check super class */
+ /* check super class */
+
+ super = c->super;
- if (super == NULL) { /* class java.long.Object */
+ if (super == NULL) { /* class java.lang.Object */
c->index = 0;
c->classUsed = USED; /* Object class is always used CO-RT*/
- c -> impldBy = NULL;
+ c->impldBy = NULL;
c->instancesize = sizeof(java_objectheader);
vftbllength = supervftbllength = 0;
c->finalizer = NULL;
- }
- else {
- if (!super->linked) {
- list_remove(&unlinkedclasses, c);
- list_addlast(&unlinkedclasses, c);
- return;
+
+ } else {
+ /* detect circularity */
+ if (super == c) {
+ *exceptionptr =
+ new_exception_utfmessage(string_java_lang_ClassCircularityError,
+ c->name);
+ return NULL;
+ }
+
+ if (!super->loaded)
+ if (!class_load(super))
+ return NULL;
+
+ if (super->flags & ACC_INTERFACE) {
+ /* java.lang.IncompatibleClassChangeError: class a has interface java.lang.Cloneable as super class */
+ panic("Interface specified as super class");
+ }
+
+ /* Don't allow extending final classes */
+ if (super->flags & ACC_FINAL) {
+ *exceptionptr =
+ new_exception_message(string_java_lang_VerifyError,
+ "Cannot inherit from final class");
+ return NULL;
}
+
+ if (!super->linked)
+ if (!class_link(super))
+ return NULL;
/* handle array classes */
if (c->name->text[0] == '[')
- if ((arraydesc = class_link_array(c)) == NULL) {
- list_remove(&unlinkedclasses, c);
- list_addlast(&unlinkedclasses, c);
- return;
- }
-
+ if (!(arraydesc = class_link_array(c)))
+ return NULL;
+
if (c->flags & ACC_INTERFACE)
c->index = interfaceindex++;
else
c->finalizer = super->finalizer;
}
-
- if (linkverbose) {
- sprintf (logtext, "Linking Class: ");
- utf_sprint (logtext+strlen(logtext), c->name );
- dolog ();
- }
-
/* compute vftbl length */
for (i = 0; i < c->methodscount; i++) {
methodinfo *m = &(c->methods[i]);
if (!(m->flags & ACC_STATIC)) { /* is instance method */
- classinfo *sc = super;
- while (sc) {
- int j;
- for (j = 0; j < sc->methodscount; j++) {
- if (method_canoverwrite(m, &(sc->methods[j]))) {
- m->vftblindex = sc->methods[j].vftblindex;
+ tc = super;
+
+ while (tc) {
+ s4 j;
+ for (j = 0; j < tc->methodscount; j++) {
+ if (method_canoverwrite(m, &(tc->methods[j]))) {
+ if (tc->methods[j].flags & ACC_PRIVATE)
+ goto notfoundvftblindex;
+
+ if (tc->methods[j].flags & ACC_FINAL) {
+ /* class a overrides final method . */
+ *exceptionptr =
+ new_exception(string_java_lang_VerifyError);
+ return NULL;
+ }
+ m->vftblindex = tc->methods[j].vftblindex;
goto foundvftblindex;
}
}
- sc = sc->super;
+ tc = tc->super;
}
+ notfoundvftblindex:
m->vftblindex = (vftbllength++);
- foundvftblindex: ;
+ foundvftblindex:
+ ;
}
}
-#ifdef STATISTICS
- count_vftbl_len += sizeof(vftbl) + sizeof(methodptr)*(vftbllength-1);
+#if defined(STATISTICS)
+ if (opt_stat)
+ count_vftbl_len +=
+ sizeof(vftbl_t) + (sizeof(methodptr) * (vftbllength - 1));
#endif
/* compute interfacetable length */
interfacetablelength = 0;
- c2 = c;
- while (c2) {
- for (i = 0; i < c2->interfacescount; i++) {
- s4 h = class_highestinterface (c2->interfaces[i]) + 1;
+ tc = c;
+ while (tc) {
+ for (i = 0; i < tc->interfacescount; i++) {
+ s4 h = class_highestinterface(tc->interfaces[i]) + 1;
if (h > interfacetablelength)
interfacetablelength = h;
}
- c2 = c2->super;
+ tc = tc->super;
}
/* allocate virtual function table */
- v = (vftbl*) mem_alloc(sizeof(vftbl) + sizeof(methodptr) *
+ v = (vftbl_t*) mem_alloc(sizeof(vftbl_t) + sizeof(methodptr) *
(vftbllength - 1) + sizeof(methodptr*) *
(interfacetablelength - (interfacetablelength > 0)));
- v = (vftbl*) (((methodptr*) v) + (interfacetablelength - 1) *
+ v = (vftbl_t*) (((methodptr*) v) + (interfacetablelength - 1) *
(interfacetablelength > 1));
c->header.vftbl = c->vftbl = v;
v->class = c;
s4 dsize;
fieldinfo *f = &(c->fields[i]);
- if (!(f->flags & ACC_STATIC) ) {
- dsize = desc_typesize (f->descriptor);
- c->instancesize = ALIGN (c->instancesize, dsize);
+ if (!(f->flags & ACC_STATIC)) {
+ dsize = desc_typesize(f->descriptor);
+ c->instancesize = ALIGN(c->instancesize, dsize);
f->offset = c->instancesize;
c->instancesize += dsize;
}
/* initialize interfacetable and interfacevftbllength */
- v->interfacevftbllength = MNEW (s4, interfacetablelength);
+ v->interfacevftbllength = MNEW(s4, interfacetablelength);
-#ifdef STATISTICS
- count_vftbl_len += (4 + sizeof(s4)) * v->interfacetablelength;
+#if defined(STATISTICS)
+ if (opt_stat)
+ count_vftbl_len += (4 + sizeof(s4)) * v->interfacetablelength;
#endif
for (i = 0; i < interfacetablelength; i++) {
/* add interfaces */
- for (c2 = c; c2 != NULL; c2 = c2->super)
- for (i = 0; i < c2->interfacescount; i++) {
- class_addinterface (c, c2->interfaces[i]);
+ for (tc = c; tc != NULL; tc = tc->super) {
+ for (i = 0; i < tc->interfacescount; i++) {
+ class_addinterface(c, tc->interfaces[i]);
}
+ }
/* add finalizer method (not for java.lang.Object) */
- if (super != NULL) {
+ if (super) {
methodinfo *fi;
- static utf *finame = NULL;
- static utf *fidesc = NULL;
- if (finame == NULL)
- finame = utf_finalize;
- if (fidesc == NULL)
- fidesc = utf_fidesc;
+ fi = class_findmethod(c, utf_finalize, utf_fidesc);
- fi = class_findmethod (c, finame, fidesc);
- if (fi != NULL) {
+ if (fi) {
if (!(fi->flags & ACC_STATIC)) {
c->finalizer = fi;
}
/* final tasks */
- c->linked = true;
+ loader_compute_subclasses(c);
- list_remove (&unlinkedclasses, c);
- list_addlast (&linkedclasses, c);
+ if (linkverbose)
+ log_message_class("Linking done class: ", c);
+ /* just return c to show that we didn't had a problem */
+
+ return c;
}
*******************************************************************************/
-static void class_freecpool (classinfo *c)
+static void class_freecpool(classinfo *c)
{
u4 idx;
u4 tag;
voidptr info;
- for (idx=0; idx < c->cpcount; idx++) {
- tag = c->cptags[idx];
- info = c->cpinfos[idx];
+ if (c->cptags && c->cpinfos) {
+ for (idx = 0; idx < c->cpcount; idx++) {
+ tag = c->cptags[idx];
+ info = c->cpinfos[idx];
- if (info != NULL) {
- switch (tag) {
- case CONSTANT_Fieldref:
- case CONSTANT_Methodref:
- case CONSTANT_InterfaceMethodref:
- FREE (info, constant_FMIref);
- break;
- case CONSTANT_Integer:
- FREE (info, constant_integer);
- break;
- case CONSTANT_Float:
- FREE (info, constant_float);
- break;
- case CONSTANT_Long:
- FREE (info, constant_long);
- break;
- case CONSTANT_Double:
- FREE (info, constant_double);
- break;
- case CONSTANT_NameAndType:
- FREE (info, constant_nameandtype);
- break;
- }
+ if (info != NULL) {
+ switch (tag) {
+ case CONSTANT_Fieldref:
+ case CONSTANT_Methodref:
+ case CONSTANT_InterfaceMethodref:
+ FREE(info, constant_FMIref);
+ break;
+ case CONSTANT_Integer:
+ FREE(info, constant_integer);
+ break;
+ case CONSTANT_Float:
+ FREE(info, constant_float);
+ break;
+ case CONSTANT_Long:
+ FREE(info, constant_long);
+ break;
+ case CONSTANT_Double:
+ FREE(info, constant_double);
+ break;
+ case CONSTANT_NameAndType:
+ FREE(info, constant_nameandtype);
+ break;
+ }
}
}
+ }
- MFREE (c -> cptags, u1, c -> cpcount);
- MFREE (c -> cpinfos, voidptr, c -> cpcount);
+ if (c->cptags)
+ MFREE(c->cptags, u1, c->cpcount);
+
+ if (c->cpinfos)
+ MFREE(c->cpinfos, voidptr, c->cpcount);
}
*******************************************************************************/
-static void class_free (classinfo *c)
+void class_free(classinfo *c)
{
s4 i;
- vftbl *v;
+ vftbl_t *v;
- class_freecpool (c);
+ class_freecpool(c);
- MFREE (c->interfaces, classinfo*, c->interfacescount);
+ if (c->interfaces)
+ MFREE(c->interfaces, classinfo*, c->interfacescount);
- for (i = 0; i < c->fieldscount; i++)
- field_free(&(c->fields[i]));
+ if (c->fields) {
+ for (i = 0; i < c->fieldscount; i++)
+ field_free(&(c->fields[i]));
+/* MFREE(c->fields, fieldinfo, c->fieldscount); */
+ }
- for (i = 0; i < c->methodscount; i++)
- method_free(&(c->methods[i]));
- MFREE (c->methods, methodinfo, c->methodscount);
+ if (c->methods) {
+ for (i = 0; i < c->methodscount; i++)
+ method_free(&(c->methods[i]));
+/* MFREE(c->methods, methodinfo, c->methodscount); */
+ }
if ((v = c->vftbl) != NULL) {
if (v->arraydesc)
mem_free(v->arraydesc,sizeof(arraydescriptor));
for (i = 0; i < v->interfacetablelength; i++) {
- MFREE (v->interfacetable[-i], methodptr, v->interfacevftbllength[i]);
- }
- MFREE (v->interfacevftbllength, s4, v->interfacetablelength);
+ MFREE(v->interfacetable[-i], methodptr, v->interfacevftbllength[i]);
+ }
+ MFREE(v->interfacevftbllength, s4, v->interfacetablelength);
- i = sizeof(vftbl) + sizeof(methodptr) * (v->vftbllength - 1) +
+ i = sizeof(vftbl_t) + sizeof(methodptr) * (v->vftbllength - 1) +
sizeof(methodptr*) * (v->interfacetablelength -
(v->interfacetablelength > 0));
- v = (vftbl*) (((methodptr*) v) - (v->interfacetablelength - 1) *
+ v = (vftbl_t*) (((methodptr*) v) - (v->interfacetablelength - 1) *
(v->interfacetablelength > 1));
- mem_free (v, i);
- }
+ mem_free(v, i);
+ }
- if (c->innerclasscount)
- MFREE (c->innerclass, innerclassinfo, c->innerclasscount);
+ if (c->innerclass)
+ MFREE(c->innerclass, innerclassinfo, c->innerclasscount);
/* if (c->classvftbl)
mem_free(c->header.vftbl, sizeof(vftbl) + sizeof(methodptr)*(c->vftbl->vftbllength-1)); */
- FREE (c, classinfo);
+/* GCFREE(c); */
}
+
/************************* Function: class_findfield ***************************
Searches a 'classinfo' structure for a field having the given name and
*******************************************************************************/
-
-fieldinfo *class_findfield (classinfo *c, utf *name, utf *desc)
+fieldinfo *class_findfield(classinfo *c, utf *name, utf *desc)
{
s4 i;
-
for (i = 0; i < c->fieldscount; i++) {
if ((c->fields[i].name == name) && (c->fields[i].descriptor == desc))
return &(c->fields[i]);
}
- panic ("Can not find field given in CONSTANT_Fieldref");
+ panic("Can not find field given in CONSTANT_Fieldref");
+
+ /* keep compiler happy */
+ return NULL;
+}
+
+
+/****************** Function: class_resolvefield_int ***************************
+
+ This is an internally used helper function. Do not use this directly.
+
+ Tries to resolve a field having the given name and type.
+ If the field cannot be resolved, NULL is returned.
+
+*******************************************************************************/
+
+static fieldinfo *class_resolvefield_int(classinfo *c, utf *name, utf *desc)
+{
+ s4 i;
+ fieldinfo *fi;
+
+ /* search for field in class c */
+ for (i = 0; i < c->fieldscount; i++) {
+ if ((c->fields[i].name == name) && (c->fields[i].descriptor == desc)) {
+ return &(c->fields[i]);
+ }
+ }
+
+ /* try superinterfaces recursively */
+ for (i = 0; i < c->interfacescount; ++i) {
+ fi = class_resolvefield_int(c->interfaces[i], name, desc);
+ if (fi)
+ return fi;
+ }
+
+ /* try superclass */
+ if (c->super)
+ return class_resolvefield_int(c->super, name, desc);
+
+ /* not found */
return NULL;
}
+/********************* Function: class_resolvefield ***************************
+
+ Resolves a reference from REFERER to a field with NAME and DESC in class C.
+
+ If the field cannot be resolved the return value is NULL. If EXCEPT is
+ true *exceptionptr is set, too.
+
+*******************************************************************************/
+
+fieldinfo *class_resolvefield(classinfo *c, utf *name, utf *desc,
+ classinfo *referer, bool except)
+{
+ fieldinfo *fi;
+
+ /* XXX resolve class c */
+ /* XXX check access from REFERER to C */
+
+ fi = class_resolvefield_int(c, name, desc);
+
+ if (!fi) {
+ if (except)
+ *exceptionptr =
+ new_exception_utfmessage(string_java_lang_NoSuchFieldError,
+ name);
+
+ return NULL;
+ }
+
+ /* XXX check access rights */
+
+ return fi;
+}
+
+
/************************* Function: class_findmethod **************************
Searches a 'classinfo' structure for a method having the given name and
*******************************************************************************/
-s4 class_findmethodIndex (classinfo *c, utf *name, utf *desc)
+s4 class_findmethodIndex(classinfo *c, utf *name, utf *desc)
{
s4 i;
-#if defined(JOWENN_DEBUG1) || defined(JOWENN_DEBUG2)
- char *buffer;
- int buffer_len, pos;
-#endif
-#ifdef JOWENN_DEBUG1
- buffer_len =
- utf_strlen(name) + utf_strlen(desc) +utf_strlen(c->name)+ 64;
-
- buffer = MNEW(char, buffer_len);
-
- strcpy(buffer, "class_findmethod: method:");
- utf_sprint(buffer+strlen(buffer), name);
- strcpy(buffer+strlen(buffer), ", desc: ");
- utf_sprint(buffer+strlen(buffer), desc);
- strcpy(buffer+strlen(buffer), ", classname: ");
- utf_sprint(buffer+strlen(buffer), c->name);
-
- log_text(buffer);
-
- MFREE(buffer, char, buffer_len);
-#endif
for (i = 0; i < c->methodscount; i++) {
-#ifdef JOWENN_DEBUG2
- buffer_len =
- utf_strlen(c->methods[i].name) + utf_strlen(c->methods[i].descriptor)+ 64;
-
- buffer = MNEW(char, buffer_len);
- strcpy(buffer, "class_findmethod: comparing to method:");
- utf_sprint(buffer+strlen(buffer), c->methods[i].name);
- strcpy(buffer+strlen(buffer), ", desc: ");
- utf_sprint(buffer+strlen(buffer), c->methods[i].descriptor);
-
- log_text(buffer);
+/* utf_display_classname(c->name);printf("."); */
+/* utf_display(c->methods[i].name);printf("."); */
+/* utf_display(c->methods[i].descriptor); */
+/* printf("\n"); */
- MFREE(buffer, char, buffer_len);
- #endif
-
-
if ((c->methods[i].name == name) && ((desc == NULL) ||
- (c->methods[i].descriptor == desc)))
+ (c->methods[i].descriptor == desc))) {
return i;
}
-#ifdef JOWENN_DEBUG2
- class_showconstantpool(c);
- log_text("class_findmethod: returning NULL");
-#endif
+ }
+
return -1;
}
-
/************************* Function: class_findmethod **************************
Searches a 'classinfo' structure for a method having the given name and
*******************************************************************************/
-methodinfo *class_findmethod (classinfo *c, utf *name, utf *desc)
+methodinfo *class_findmethod(classinfo *c, utf *name, utf *desc)
{
-#if 0
- s4 i;
-#if defined(JOWENN_DEBUG1) || defined(JOWENN_DEBUG2)
- char *buffer;
- int buffer_len, pos;
-#endif
-#ifdef JOWENN_DEBUG1
+ s4 idx = class_findmethodIndex(c, name, desc);
+
+ if (idx == -1)
+ return NULL;
+
+ return &(c->methods[idx]);
+}
- buffer_len =
- utf_strlen(name) + utf_strlen(desc) +utf_strlen(c->name)+ 64;
+
+/*********************** Function: class_fetchmethod **************************
- buffer = MNEW(char, buffer_len);
+ like class_findmethod, but aborts with an error if the method is not found
+
+*******************************************************************************/
+
+methodinfo *class_fetchmethod(classinfo *c, utf *name, utf *desc)
+{
+ methodinfo *mi;
+
+ mi = class_findmethod(c, name, desc);
+
+ if (!mi) {
+ log_plain("Class: "); if (c) log_plain_utf(c->name); log_nl();
+ log_plain("Method: "); if (name) log_plain_utf(name); log_nl();
+ log_plain("Descriptor: "); if (desc) log_plain_utf(desc); log_nl();
+ panic("Method not found");
+ }
+
+ return mi;
+}
+
+
+/*********************** Function: class_findmethod_w**************************
+
+ like class_findmethod, but logs a warning if the method is not found
+
+*******************************************************************************/
+
+methodinfo *class_findmethod_w(classinfo *c, utf *name, utf *desc, char *from)
+{
+ methodinfo *mi;
+ mi = class_findmethod(c, name, desc);
+
+ if (!mi) {
+ log_plain("Class: "); if (c) log_plain_utf(c->name); log_nl();
+ log_plain("Method: "); if (name) log_plain_utf(name); log_nl();
+ log_plain("Descriptor: "); if (desc) log_plain_utf(desc); log_nl();
+
+ if ( c->flags & ACC_PUBLIC ) log_plain(" PUBLIC ");
+ if ( c->flags & ACC_PRIVATE ) log_plain(" PRIVATE ");
+ if ( c->flags & ACC_PROTECTED ) log_plain(" PROTECTED ");
+ if ( c->flags & ACC_STATIC ) log_plain(" STATIC ");
+ if ( c->flags & ACC_FINAL ) log_plain(" FINAL ");
+ if ( c->flags & ACC_SYNCHRONIZED ) log_plain(" SYNCHRONIZED ");
+ if ( c->flags & ACC_VOLATILE ) log_plain(" VOLATILE ");
+ if ( c->flags & ACC_TRANSIENT ) log_plain(" TRANSIENT ");
+ if ( c->flags & ACC_NATIVE ) log_plain(" NATIVE ");
+ if ( c->flags & ACC_INTERFACE ) log_plain(" INTERFACE ");
+ if ( c->flags & ACC_ABSTRACT ) log_plain(" ABSTRACT ");
+
+ log_plain(from);
+ log_plain(" : WARNING: Method not found");log_nl( );
+ }
+
+ return mi;
+}
- strcpy(buffer, "class_findmethod: method:");
- utf_sprint(buffer+strlen(buffer), name);
- strcpy(buffer+strlen(buffer), ", desc: ");
- utf_sprint(buffer+strlen(buffer), desc);
- strcpy(buffer+strlen(buffer), ", classname: ");
- utf_sprint(buffer+strlen(buffer), c->name);
+
+/************************* Function: class_findmethod_approx ******************
- log_text(buffer);
+ like class_findmethod but ignores the return value when comparing the
+ descriptor.
+
+*******************************************************************************/
+
+methodinfo *class_findmethod_approx(classinfo *c, utf *name, utf *desc)
+{
+ s4 i;
- MFREE(buffer, char, buffer_len);
-#endif
for (i = 0; i < c->methodscount; i++) {
-#ifdef JOWENN_DEBUG2
- buffer_len =
- utf_strlen(c->methods[i].name) + utf_strlen(c->methods[i].descriptor)+ 64;
-
- buffer = MNEW(char, buffer_len);
+ if (c->methods[i].name == name) {
+ utf *meth_descr = c->methods[i].descriptor;
+
+ if (desc == NULL)
+ /* ignore type */
+ return &(c->methods[i]);
- strcpy(buffer, "class_findmethod: comparing to method:");
- utf_sprint(buffer+strlen(buffer), c->methods[i].name);
- strcpy(buffer+strlen(buffer), ", desc: ");
- utf_sprint(buffer+strlen(buffer), c->methods[i].descriptor);
+ if (desc->blength <= meth_descr->blength) {
+ /* current position in utf text */
+ char *desc_utf_ptr = desc->text;
+ char *meth_utf_ptr = meth_descr->text;
+ /* points behind utf strings */
+ char *desc_end = utf_end(desc);
+ char *meth_end = utf_end(meth_descr);
+ char ch;
+
+ /* compare argument types */
+ while (desc_utf_ptr < desc_end && meth_utf_ptr < meth_end) {
+
+ if ((ch = *desc_utf_ptr++) != (*meth_utf_ptr++))
+ break; /* no match */
+
+ if (ch == ')')
+ return &(c->methods[i]); /* all parameter types equal */
+ }
+ }
+ }
+ }
+
+ return NULL;
+}
+
+
+/***************** Function: class_resolvemethod_approx ***********************
- log_text(buffer);
+ Searches a class and every super class for a method (without paying
+ attention to the return value)
+
+*******************************************************************************/
+
+methodinfo *class_resolvemethod_approx(classinfo *c, utf *name, utf *desc)
+{
+ while (c) {
+ /* search for method (ignore returntype) */
+ methodinfo *m = class_findmethod_approx(c, name, desc);
+ /* method found */
+ if (m) return m;
+ /* search superclass */
+ c = c->super;
+ }
- MFREE(buffer, char, buffer_len);
- #endif
-
-
- if ((c->methods[i].name == name) && ((desc == NULL) ||
- (c->methods[i].descriptor == desc)))
- return &(c->methods[i]);
- }
-#ifdef JOWENN_DEBUG2
- class_showconstantpool(c);
- log_text("class_findmethod: returning NULL");
-#endif
return NULL;
-#endif
- s4 idx=class_findmethodIndex(c,name,desc);
-/* if (idx==-1) log_text("class_findmethod: method not found");*/
- if (idx==-1) return NULL;
- return &(c->methods[idx]);
}
+/************************* Function: class_resolvemethod ***********************
+
+ Searches a class and every super class for a method.
+
+*******************************************************************************/
+
+methodinfo *class_resolvemethod(classinfo *c, utf *name, utf *desc)
+{
+ /*log_text("Trying to resolve a method");
+ utf_display(c->name);
+ utf_display(name);
+ utf_display(desc);*/
+ while (c) {
+ /*log_text("Looking in:");
+ utf_display(c->name);*/
+ methodinfo *m = class_findmethod(c, name, desc);
+ if (m) return m;
+ /* search superclass */
+ c = c->super;
+ }
+ /*log_text("method not found:");*/
+ return NULL;
+}
-/************************* Function: class_findmethod_approx ******************
+/****************** Function: class_resolveinterfacemethod_int ****************
+
+ Internally used helper function. Do not use this directly.
+
+*******************************************************************************/
+
+static
+methodinfo *class_resolveinterfacemethod_int(classinfo *c, utf *name, utf *desc)
+{
+ methodinfo *mi;
+ int i;
- like class_findmethod but ignores the return value when comparing the
- descriptor.
+ mi = class_findmethod(c,name,desc);
+ if (mi)
+ return mi;
+
+ /* try the superinterfaces */
+ for (i=0; i<c->interfacescount; ++i) {
+ mi = class_resolveinterfacemethod_int(c->interfaces[i],name,desc);
+ if (mi)
+ return mi;
+ }
+
+ return NULL;
+}
+
+/******************** Function: class_resolveinterfacemethod ******************
+
+ Resolves a reference from REFERER to a method with NAME and DESC in
+ interface C.
+
+ If the method cannot be resolved the return value is NULL. If EXCEPT is
+ true *exceptionptr is set, too.
*******************************************************************************/
-methodinfo *class_findmethod_approx (classinfo *c, utf *name, utf *desc)
+methodinfo *class_resolveinterfacemethod(classinfo *c, utf *name, utf *desc,
+ classinfo *referer, bool except)
{
- s4 i;
+ methodinfo *mi;
- for (i = 0; i < c->methodscount; i++)
- if (c->methods[i].name == name) {
- utf *meth_descr = c->methods[i].descriptor;
-
- if (desc == NULL)
- /* ignore type */
- return &(c->methods[i]);
+ /* XXX resolve class c */
+ /* XXX check access from REFERER to C */
+
+ if (!(c->flags & ACC_INTERFACE)) {
+ if (except)
+ *exceptionptr =
+ new_exception(string_java_lang_IncompatibleClassChangeError);
- if (desc->blength <= meth_descr->blength) {
- /* current position in utf text */
- char *desc_utf_ptr = desc->text;
- char *meth_utf_ptr = meth_descr->text;
- /* points behind utf strings */
- char *desc_end = utf_end(desc);
- char *meth_end = utf_end(meth_descr);
- char ch;
-
- /* compare argument types */
- while (desc_utf_ptr<desc_end && meth_utf_ptr<meth_end) {
-
- if ((ch=*desc_utf_ptr++) != (*meth_utf_ptr++))
- break; /* no match */
-
- if (ch==')')
- return &(c->methods[i]); /* all parameter types equal */
- }
- }
- }
+ return NULL;
+ }
- return NULL;
-}
+ mi = class_resolveinterfacemethod_int(c, name, desc);
-/***************** Function: class_resolvemethod_approx ***********************
-
- Searches a class and every super class for a method (without paying
- attention to the return value)
+ if (mi)
+ return mi;
-*******************************************************************************/
+ /* try class java.lang.Object */
+ mi = class_findmethod(class_java_lang_Object, name, desc);
+
+ if (mi)
+ return mi;
+
+ if (except)
+ *exceptionptr =
+ new_exception_utfmessage(string_java_lang_NoSuchMethodError, name);
-methodinfo *class_resolvemethod_approx (classinfo *c, utf *name, utf *desc)
-{
- while (c) {
- /* search for method (ignore returntype) */
- methodinfo *m = class_findmethod_approx (c, name, desc);
- /* method found */
- if (m) return m;
- /* search superclass */
- c = c->super;
- }
return NULL;
}
-/************************* Function: class_resolvemethod ***********************
+/********************* Function: class_resolveclassmethod *********************
- Searches a class and every super class for a method.
+ Resolves a reference from REFERER to a method with NAME and DESC in
+ class C.
+
+ If the method cannot be resolved the return value is NULL. If EXCEPT is
+ true *exceptionptr is set, too.
*******************************************************************************/
-methodinfo *class_resolvemethod (classinfo *c, utf *name, utf *desc)
+methodinfo *class_resolveclassmethod(classinfo *c, utf *name, utf *desc,
+ classinfo *referer, bool except)
{
- while (c) {
- methodinfo *m = class_findmethod(c, name, desc);
- if (m) return m;
- /* search superclass */
- c = c->super;
+ classinfo *cls;
+ methodinfo *mi;
+ s4 i;
+ char msg[MAXLOGTEXT];
+
+ /* XXX resolve class c */
+ /* XXX check access from REFERER to C */
+
+/* if (c->flags & ACC_INTERFACE) { */
+/* if (except) */
+/* *exceptionptr = */
+/* new_exception(string_java_lang_IncompatibleClassChangeError); */
+/* return NULL; */
+/* } */
+
+ /* try class c and its superclasses */
+ cls = c;
+ do {
+ mi = class_findmethod(cls, name, desc);
+ if (mi)
+ goto found;
+ } while ((cls = cls->super) != NULL); /* try the superclass */
+
+ /* try the superinterfaces */
+ for (i = 0; i < c->interfacescount; ++i) {
+ mi = class_resolveinterfacemethod_int(c->interfaces[i], name, desc);
+ if (mi)
+ goto found;
+ }
+
+ if (except) {
+ utf_sprint(msg, c->name);
+ sprintf(msg + strlen(msg), ".");
+ utf_sprint(msg + strlen(msg), name);
+ utf_sprint(msg + strlen(msg), desc);
+
+ *exceptionptr =
+ new_exception_message(string_java_lang_NoSuchMethodError, msg);
}
+
return NULL;
-}
+ found:
+ if ((mi->flags & ACC_ABSTRACT) && !(c->flags & ACC_ABSTRACT)) {
+ if (except)
+ *exceptionptr = new_exception(string_java_lang_AbstractMethodError);
+
+ return NULL;
+ }
+
+ /* XXX check access rights */
+
+ return mi;
+}
/************************* Function: class_issubclass **************************
{
for (;;) {
if (!sub) return false;
- if (sub==super) return true;
- sub = sub -> super;
+ if (sub == super) return true;
+ sub = sub->super;
}
}
-
/****************** Initialization function for classes ******************
In Java, every class can have a static initialization function. This
*******************************************************************************/
-#ifdef USE_THREADS
-extern int blockInts;
-#endif
+static classinfo *class_init_intern(classinfo *c);
-void class_init(classinfo *c)
+classinfo *class_init(classinfo *c)
{
- methodinfo *m;
- java_objectheader *exceptionptr;
- s4 i;
- int b;
+ classinfo *r;
+ if (!makeinitializations)
+ return c;
- if (!makeinitializations)
- return;
- if (c->initialized)
- return;
- c -> initialized = true;
+ /* enter a monitor on the class */
+ builtin_monitorenter((java_objectheader *) c);
+ /* maybe the class is already initalized or the current thread, which can
+ pass the monitor, is currently initalizing this class */
-#ifdef STATISTICS
- count_class_inits++;
+ if (c->initialized || c->initializing) {
+ builtin_monitorexit((java_objectheader *) c);
+
+ return c;
+ }
+
+ /* this initalizing run begins NOW */
+ c->initializing = true;
+
+ /* call the internal function */
+ r = class_init_intern(c);
+
+ /* if return value is not NULL everything was ok and the class is
+ initialized */
+ if (r)
+ c->initialized = true;
+
+ /* this initalizing run is done */
+ c->initializing = false;
+
+ /* leave the monitor */
+
+ builtin_monitorexit((java_objectheader *) c);
+
+ return r;
+}
+
+
+/* this function MUST NOT be called directly, because of thread <clinit>
+ race conditions */
+
+static classinfo *class_init_intern(classinfo *c)
+{
+ methodinfo *m;
+ s4 i;
+#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
+ int b;
#endif
- if (c->super)
- class_init (c->super);
- for (i=0; i < c->interfacescount; i++)
- class_init(c->interfaces[i]); /* real */
-
- m = class_findmethod (c, utf_clinit, utf_fidesc);
- if (!m) {
- if (initverbose) {
- sprintf (logtext, "Class ");
- utf_sprint (logtext+strlen(logtext), c->name);
- sprintf (logtext+strlen(logtext), " has no initializer");
- dolog ();
- }
-/* goto callinitialize;*/
- return;
- }
-
- if (! (m->flags & ACC_STATIC))
- panic ("Class initializer is not static!");
-
- if (initverbose) {
- sprintf (logtext, "Starting initializer for class: ");
- utf_sprint (logtext+strlen(logtext), c->name);
- dolog ();
- }
+ /* maybe the class is not already loaded */
+ if (!c->loaded)
+ if (!class_load(c))
+ return NULL;
-#ifdef USE_THREADS
- b = blockInts;
- blockInts = 0;
+ /* maybe the class is not already linked */
+ if (!c->linked)
+ if (!class_link(c))
+ return NULL;
+
+#if defined(STATISTICS)
+ if (opt_stat)
+ count_class_inits++;
#endif
- exceptionptr = asm_calljavamethod(m, NULL, NULL, NULL, NULL);
+ /* initialize super class */
+
+ if (c->super) {
+ if (!c->super->initialized) {
+ if (initverbose) {
+ char logtext[MAXLOGTEXT];
+ sprintf(logtext, "Initialize super class ");
+ utf_sprint_classname(logtext + strlen(logtext), c->super->name);
+ sprintf(logtext + strlen(logtext), " from ");
+ utf_sprint_classname(logtext + strlen(logtext), c->name);
+ log_text(logtext);
+ }
+
+ if (!class_init(c->super))
+ return NULL;
+ }
+ }
+
+ /* initialize interface classes */
+
+ for (i = 0; i < c->interfacescount; i++) {
+ if (!c->interfaces[i]->initialized) {
+ if (initverbose) {
+ char logtext[MAXLOGTEXT];
+ sprintf(logtext, "Initialize interface class ");
+ utf_sprint_classname(logtext + strlen(logtext), c->interfaces[i]->name);
+ sprintf(logtext + strlen(logtext), " from ");
+ utf_sprint_classname(logtext + strlen(logtext), c->name);
+ log_text(logtext);
+ }
+
+ if (!class_init(c->interfaces[i]))
+ return NULL;
+ }
+ }
+
+ m = class_findmethod(c, utf_clinit, utf_fidesc);
+
+ if (!m) {
+ if (initverbose) {
+ char logtext[MAXLOGTEXT];
+ sprintf(logtext, "Class ");
+ utf_sprint_classname(logtext + strlen(logtext), c->name);
+ sprintf(logtext + strlen(logtext), " has no static class initializer");
+ log_text(logtext);
+ }
+
+ return c;
+ }
+
+ /* Sun's and IBM's JVM don't care about the static flag */
+/* if (!(m->flags & ACC_STATIC)) { */
+/* panic("Class initializer is not static!"); */
-#ifdef USE_THREADS
- assert(blockInts == 0);
- blockInts = b;
+ if (initverbose)
+ log_message_class("Starting static class initializer for class: ", c);
+
+#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
+ b = blockInts;
+ blockInts = 0;
#endif
- if (exceptionptr) {
- printf ("#### Initializer of ");
- utf_display (c->name);
- printf (" has thrown: ");
- utf_display (exceptionptr->vftbl->class->name);
- printf ("\n");
- fflush (stdout);
- }
-
- if (initverbose) {
- sprintf (logtext, "Finished initializer for class: ");
- utf_sprint (logtext+strlen(logtext), c->name);
- dolog ();
- }
- if (c->name == utf_systemclass) {
- /* class java.lang.System requires explicit initialization */
-
- if (initverbose)
- printf ("#### Initializing class System");
-
- /* find initializing method */
- m = class_findmethod (c,
- utf_initsystemclass,
- utf_fidesc);
-
- if (!m) {
- /* no method found */
- /* printf("initializeSystemClass failed"); */
- return;
- }
- #ifdef USE_THREADS
- b = blockInts;
- blockInts = 0;
- #endif
-
- exceptionptr = asm_calljavamethod (m, NULL,NULL,NULL,NULL);
-
- #ifdef USE_THREADS
- assert(blockInts == 0);
- blockInts = b;
- #endif
-
- if (exceptionptr) {
- printf ("#### initializeSystemClass has thrown: ");
- utf_display (exceptionptr->vftbl->class->name);
- printf ("\n");
- fflush (stdout);
- }
- }
+ /* now call the initializer */
+ asm_calljavafunction(m, NULL, NULL, NULL, NULL);
-}
+#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
+ assert(blockInts == 0);
+ blockInts = b;
+#endif
+
+ /* we have an exception or error */
+ if (*exceptionptr) {
+ /* class is NOT initialized */
+ c->initialized = false;
+ /* is this an exception, than wrap it */
+ if (builtin_instanceof(*exceptionptr, class_java_lang_Exception)) {
+ java_objectheader *xptr;
+ java_objectheader *cause;
+ /* get the cause */
+ cause = *exceptionptr;
+
+ /* clear exception, because we are calling jit code again */
+ *exceptionptr = NULL;
+
+ /* wrap the exception */
+ xptr =
+ new_exception_throwable(string_java_lang_ExceptionInInitializerError,
+ (java_lang_Throwable *) cause);
+
+ /* XXX should we exit here? */
+ if (*exceptionptr)
+ throw_exception();
+
+ /* set new exception */
+ *exceptionptr = xptr;
+ }
+
+ return NULL;
+ }
+
+ if (initverbose)
+ log_message_class("Finished static class initializer for class: ", c);
+
+ return c;
+}
/********* Function: find_class_method_constant *********/
+
int find_class_method_constant (classinfo *c, utf * c1, utf* m1, utf* d1)
{
u4 i;
}
-
/******************************************************************************/
/******************* General functions for the class loader *******************/
/******************************************************************************/
-/********************* Function: loader_load ***********************************
-
- Loads and links the class desired class and each class and interface
- referenced by it.
- Returns: a pointer to this class
-
-*******************************************************************************/
-
-static int loader_load_running = 0;
-
-classinfo *loader_load (utf *topname)
-{
- classinfo *top;
- classinfo *c;
- long int starttime=0,stoptime=0;
-
- /* avoid recursive calls */
- if (loader_load_running)
- return class_new(topname);
- loader_load_running++;
-
- intsDisable(); /* schani */
-
- if (getloadingtime)
- starttime = getcputime();
-
- top = class_new (topname);
-
- /* load classes */
- while ( (c = list_first(&unloadedclasses)) ) {
- if (!class_load (c)) {
- list_remove (&unloadedclasses, c);
- top=NULL;
- }
- }
-
- /* link classes */
- while ( (c = list_first(&unlinkedclasses)) ) {
- class_link (c);
- }
-
- if (loader_inited)
- loader_compute_subclasses();
-
- /* measure time */
- if (getloadingtime) {
- stoptime = getcputime();
- loadingtime += (stoptime-starttime);
- }
-
- intsRestore(); /* schani */
-
- loader_load_running--;
-
- return top;
-}
-
-
/**************** function: create_primitive_classes ***************************
- create classes representing primitive types
-
-********************************************************************************/
+ create classes representing primitive types
+*******************************************************************************/
-void create_primitive_classes()
+static bool create_primitive_classes()
{
- int i;
+ s4 i;
- for (i=0;i<PRIMITIVETYPE_COUNT;i++) {
+ for (i = 0; i < PRIMITIVETYPE_COUNT; i++) {
/* create primitive class */
- classinfo *c = class_new ( utf_new_char(primitivetype_table[i].name) );
- c -> classUsed = NOTUSED; /* not used initially CO-RT */
- c -> impldBy = NULL;
-
+ classinfo *c =
+ class_new_intern(utf_new_char(primitivetype_table[i].name));
+ c->classUsed = NOTUSED; /* not used initially CO-RT */
+ c->impldBy = NULL;
+
/* prevent loader from loading primitive class */
- list_remove (&unloadedclasses, c);
- /* add to unlinked classes */
- list_addlast (&unlinkedclasses, c);
- c -> super = class_java_lang_Object;
- class_link (c);
+ c->loaded = true;
+ if (!class_link(c))
+ return false;
primitivetype_table[i].class_primitive = c;
/* create class for wrapping the primitive type */
- primitivetype_table[i].class_wrap =
- class_new( utf_new_char(primitivetype_table[i].wrapname) );
- primitivetype_table[i].class_wrap -> classUsed = NOTUSED; /* not used initially CO-RT */
- primitivetype_table[i].class_wrap -> impldBy = NULL;
+ c = class_new_intern(utf_new_char(primitivetype_table[i].wrapname));
+ primitivetype_table[i].class_wrap = c;
+ primitivetype_table[i].class_wrap->classUsed = NOTUSED; /* not used initially CO-RT */
+ primitivetype_table[i].class_wrap->impldBy = NULL;
/* create the primitive array class */
if (primitivetype_table[i].arrayname) {
- c = class_new( utf_new_char(primitivetype_table[i].arrayname) );
+ c = class_new_intern(utf_new_char(primitivetype_table[i].arrayname));
primitivetype_table[i].arrayclass = c;
- if (!c->linked) class_link(c);
+ c->loaded = true;
+ if (!c->linked)
+ if (!class_link(c))
+ return false;
primitivetype_table[i].arrayvftbl = c->vftbl;
}
}
+
+ return true;
}
+
/**************** function: class_primitive_from_sig ***************************
return the primitive class indicated by the given signature character
utf_ptr....first character of descriptor
end_ptr....first character after the end of the string
next.......if non-NULL, *next is set to the first character after
- the descriptor
- mode.......what to do if a class descriptor is parsed successfully:
+ the descriptor. (Undefined if an error occurs.)
+
+ mode.......a combination (binary or) of the following flags:
+
+ (Flags marked with * are the default settings.)
+
+ What to do if a reference type descriptor is parsed successfully:
+
CLASSLOAD_SKIP...skip it and return something != NULL
- CLASSLOAD_NEW....get classinfo * via class_new
+ * CLASSLOAD_NEW....get classinfo * via class_new
CLASSLOAD_LOAD...get classinfo * via loader_load
- If the descriptor is invalid the return value is NULL
+ How to handle primitive types:
-********************************************************************************/
+ * CLASSLOAD_PRIMITIVE.......return primitive class (eg. "int")
+ CLASSLOAD_NULLPRIMITIVE...return NULL for primitive types
+
+ How to handle "V" descriptors:
+
+ * CLASSLOAD_VOID.....handle it like other primitive types
+ CLASSLOAD_NOVOID...treat it as an error
-classinfo *class_from_descriptor(char *utf_ptr,char *end_ptr,char **next,int mode)
+ How to deal with extra characters after the end of the
+ descriptor:
+
+ * CLASSLOAD_NOCHECKEND...ignore (useful for parameter lists)
+ CLASSLOAD_CHECKEND.....treat them as an error
+
+ How to deal with errors:
+
+ * CLASSLOAD_PANIC....abort execution with an error message
+ CLASSLOAD_NOPANIC..return NULL on error
+
+*******************************************************************************/
+
+classinfo *class_from_descriptor(char *utf_ptr, char *end_ptr,
+ char **next, int mode)
{
char *start = utf_ptr;
bool error = false;
utf *name;
+
+ SKIP_FIELDDESCRIPTOR_SAFE(utf_ptr, end_ptr, error);
+
+ if (mode & CLASSLOAD_CHECKEND)
+ error |= (utf_ptr != end_ptr);
- SKIP_FIELDDESCRIPTOR_SAFE(utf_ptr,end_ptr,error);
- if (error) return NULL;
- if (next) *next = utf_ptr;
+ if (!error) {
+ if (next) *next = utf_ptr;
+
+ switch (*start) {
+ case 'V':
+ if (mode & CLASSLOAD_NOVOID)
+ break;
+ /* FALLTHROUGH! */
+ case 'I':
+ case 'J':
+ case 'F':
+ case 'D':
+ case 'B':
+ case 'C':
+ case 'S':
+ case 'Z':
+ return (mode & CLASSLOAD_NULLPRIMITIVE)
+ ? NULL
+ : class_primitive_from_sig(*start);
+
+ case 'L':
+ start++;
+ utf_ptr--;
+ /* FALLTHROUGH! */
+ case '[':
+ if (mode & CLASSLOAD_SKIP) return class_java_lang_Object;
+ name = utf_new(start, utf_ptr - start);
+ if (opt_eager) {
+ classinfo *tc;
+
+ tc = class_new_intern(name);
+ class_load(tc);
+ list_addfirst(&unlinkedclasses, tc);
+
+ return tc;
+
+ } else {
+ return (mode & CLASSLOAD_LOAD)
+ ? class_load(class_new(name)) : class_new(name); /* XXX handle errors */
+ }
+ }
+ }
- switch (*start) {
- case 'L':
- start++;
- utf_ptr--;
- /* fallthrough */
- case '[':
- if (mode == CLASSLOAD_SKIP) return class_java_lang_Object;
- name = utf_new(start,utf_ptr-start);
- return (mode == CLASSLOAD_LOAD) ? loader_load(name) : class_new(name);
- default:
- return class_primitive_from_sig(*start);
+ /* An error occurred */
+ if (mode & CLASSLOAD_NOPANIC)
+ return NULL;
+
+ log_plain("Invalid descriptor at beginning of '");
+ log_plain_utf(utf_new(start, end_ptr - start));
+ log_plain("'");
+ log_nl();
+
+ panic("Invalid descriptor");
+
+ /* keep compiler happy */
+ return NULL;
+}
+
+
+/******************* function: type_from_descriptor ****************************
+
+ return the basic type indicated by the given descriptor
+
+ This function parses a descriptor and returns its basic type as
+ TYPE_INT, TYPE_LONG, TYPE_FLOAT, TYPE_DOUBLE, TYPE_ADDRESS or TYPE_VOID.
+
+ cls...if non-NULL the referenced variable is set to the classinfo *
+ returned by class_from_descriptor.
+
+ For documentation of the arguments utf_ptr, end_ptr, next and mode
+ see class_from_descriptor. The only difference is that
+ type_from_descriptor always uses CLASSLOAD_PANIC.
+
+********************************************************************************/
+
+int type_from_descriptor(classinfo **cls, char *utf_ptr, char *end_ptr,
+ char **next, int mode)
+{
+ classinfo *mycls;
+ if (!cls) cls = &mycls;
+ *cls = class_from_descriptor(utf_ptr, end_ptr, next, mode & (~CLASSLOAD_NOPANIC));
+ switch (*utf_ptr) {
+ case 'B':
+ case 'C':
+ case 'I':
+ case 'S':
+ case 'Z':
+ return TYPE_INT;
+ case 'D':
+ return TYPE_DOUBLE;
+ case 'F':
+ return TYPE_FLOAT;
+ case 'J':
+ return TYPE_LONG;
+ case 'V':
+ return TYPE_VOID;
}
+ return TYPE_ADDRESS;
}
+
/*************** function: create_pseudo_classes *******************************
create pseudo classes used by the typechecker
********************************************************************************/
-static void
-create_pseudo_classes()
+static void create_pseudo_classes()
{
/* pseudo class for Arraystubs (extends java.lang.Object) */
- pseudo_class_Arraystub = class_new( utf_new_char(";Arraystub;") );
- list_remove(&unloadedclasses,pseudo_class_Arraystub);
-
+ pseudo_class_Arraystub = class_new_intern(utf_new_char("$ARRAYSTUB$"));
+ pseudo_class_Arraystub->loaded = true;
pseudo_class_Arraystub->super = class_java_lang_Object;
pseudo_class_Arraystub->interfacescount = 2;
- pseudo_class_Arraystub->interfaces = MNEW(classinfo*,2);
- pseudo_class_Arraystub->interfaces[0] =
- class_java_lang_Cloneable;
- pseudo_class_Arraystub->interfaces[1] =
- class_java_io_Serializable;
+ pseudo_class_Arraystub->interfaces = MNEW(classinfo*, 2);
+ pseudo_class_Arraystub->interfaces[0] = class_java_lang_Cloneable;
+ pseudo_class_Arraystub->interfaces[1] = class_java_io_Serializable;
- list_addlast(&unlinkedclasses,pseudo_class_Arraystub);
class_link(pseudo_class_Arraystub);
pseudo_class_Arraystub_vftbl = pseudo_class_Arraystub->vftbl;
/* pseudo class representing the null type */
- pseudo_class_Null = class_new( utf_new_char(";Null;") );
- list_remove(&unloadedclasses,pseudo_class_Null);
-
+ pseudo_class_Null = class_new_intern(utf_new_char("$NULL$"));
+ pseudo_class_Null->loaded = true;
pseudo_class_Null->super = class_java_lang_Object;
+ class_link(pseudo_class_Null);
- list_addlast(&unlinkedclasses,pseudo_class_Null);
- class_link(pseudo_class_Null);
+ /* pseudo class representing new uninitialized objects */
+
+ pseudo_class_New = class_new_intern(utf_new_char("$NEW$"));
+ pseudo_class_New->loaded = true;
+ pseudo_class_New->linked = true;
+ pseudo_class_New->super = class_java_lang_Object;
+/* class_link(pseudo_class_New); */
}
+
/********************** Function: loader_init **********************************
Initializes all lists and loads all classes required for the system or the
*******************************************************************************/
-void loader_init (u1 * stackbottom)
+void loader_init(u1 *stackbottom)
{
interfaceindex = 0;
-
- log_text("Entering loader_init");
-
-
- list_init (&unloadedclasses, OFFSET(classinfo, listnode) );
- list_init (&unlinkedclasses, OFFSET(classinfo, listnode) );
- list_init (&linkedclasses, OFFSET(classinfo, listnode) );
-
/* create utf-symbols for pointer comparison of frequently used strings */
utf_innerclasses = utf_new_char("InnerClasses");
utf_constantvalue = utf_new_char("ConstantValue");
- utf_code = utf_new_char("Code");
+ utf_code = utf_new_char("Code");
+ utf_exceptions = utf_new_char("Exceptions");
+ utf_linenumbertable = utf_new_char("LineNumberTable");
+ utf_sourcefile = utf_new_char("SourceFile");
utf_finalize = utf_new_char("finalize");
utf_fidesc = utf_new_char("()V");
+ utf_init = utf_new_char("<init>");
utf_clinit = utf_new_char("<clinit>");
utf_initsystemclass = utf_new_char("initializeSystemClass");
utf_systemclass = utf_new_char("java/lang/System");
- utf_vmclassloader =utf_new_char("java/lang/VMClassLoader");
- utf_initialize =utf_new_char("initialize");
- utf_initializedesc =utf_new_char("(I)V");
-
- utf_vmclass =utf_new_char("java/lang/VMClass");
-
- /* create some important classes */
- /* These classes have to be created now because the classinfo
- * pointers are used in the loading code.
- */
- class_java_lang_Object = class_new( utf_new_char ("java/lang/Object") );
- class_java_lang_String = class_new( utf_new_char("java/lang/String") );
- class_java_lang_Cloneable = class_new( utf_new_char ("java/lang/Cloneable") );
- class_java_io_Serializable = class_new( utf_new_char ("java/io/Serializable") );
-
- log_text("loader_init: java/lang/Object");
- /* load the classes which were created above */
- loader_load (class_java_lang_Object->name);
-
- loader_inited=1; /*JOWENN*/
-
- class_java_lang_Throwable =
- loader_load( utf_new_char("java/lang/Throwable") );
-
- log_text("loader_init: loader_load: java/lang/ClassCastException");
- class_java_lang_ClassCastException =
- loader_load ( utf_new_char ("java/lang/ClassCastException") );
- class_java_lang_NullPointerException =
- loader_load ( utf_new_char ("java/lang/NullPointerException") );
- class_java_lang_ArrayIndexOutOfBoundsException = loader_load (
- utf_new_char ("java/lang/ArrayIndexOutOfBoundsException") );
- class_java_lang_NegativeArraySizeException = loader_load (
- utf_new_char ("java/lang/NegativeArraySizeException") );
- class_java_lang_OutOfMemoryError = loader_load (
- utf_new_char ("java/lang/OutOfMemoryError") );
- class_java_lang_ArrayStoreException =
- loader_load ( utf_new_char ("java/lang/ArrayStoreException") );
- class_java_lang_ArithmeticException =
- loader_load ( utf_new_char ("java/lang/ArithmeticException") );
- class_java_lang_ThreadDeath = /* schani */
- loader_load ( utf_new_char ("java/lang/ThreadDeath") );
- /* create classes representing primitive types */
- create_primitive_classes();
-
- /* create classes used by the typechecker */
- create_pseudo_classes();
-
- /* correct vftbl-entries (retarded loading of class java/lang/String) */
- stringtable_update();
-#ifdef USE_THREADS
- if (stackbottom!=0)
- initLocks();
+ utf_vmclassloader = utf_new_char("java/lang/VMClassLoader");
+ utf_initialize = utf_new_char("initialize");
+ utf_initializedesc = utf_new_char("(I)V");
+ utf_vmclass = utf_new_char("java/lang/VMClass");
+ utf_java_lang_Object= utf_new_char("java/lang/Object");
+ array_packagename = utf_new_char("<the array package>");
+ utf_fillInStackTrace_name = utf_new_char("fillInStackTrace");
+ utf_fillInStackTrace_desc = utf_new_char("()Ljava/lang/Throwable;");
+
+ /* create some important classes */
+ /* These classes have to be created now because the classinfo
+ * pointers are used in the loading code.
+ */
+ class_java_lang_Object = class_new_intern(utf_java_lang_Object);
+ class_load(class_java_lang_Object);
+ class_link(class_java_lang_Object);
+
+ class_java_lang_String = class_new(utf_new_char("java/lang/String"));
+ class_load(class_java_lang_String);
+ class_link(class_java_lang_String);
+
+ class_java_lang_Cloneable = class_new(utf_new_char("java/lang/Cloneable"));
+ class_load(class_java_lang_Cloneable);
+ class_link(class_java_lang_Cloneable);
+
+ class_java_io_Serializable =
+ class_new(utf_new_char("java/io/Serializable"));
+ class_load(class_java_io_Serializable);
+ class_link(class_java_io_Serializable);
+
+ /* create classes representing primitive types */
+ create_primitive_classes();
+
+ /* create classes used by the typechecker */
+ create_pseudo_classes();
+
+ /* correct vftbl-entries (retarded loading of class java/lang/String) */
+ stringtable_update();
+
+#if defined(USE_THREADS)
+ if (stackbottom != 0)
+ initLocks();
#endif
+}
+/* loader_compute_subclasses ***************************************************
- log_text("loader_init: creating global proto_java_lang_ClassCastException");
- proto_java_lang_ClassCastException =
- builtin_new(class_java_lang_ClassCastException);
- heap_addreference ( (void**) &proto_java_lang_ClassCastException);
+ XXX
- log_text("loader_init: proto_java_lang_ClassCastException has been initialized");
+*******************************************************************************/
- proto_java_lang_NullPointerException =
- builtin_new(class_java_lang_NullPointerException);
- heap_addreference ( (void**) &proto_java_lang_NullPointerException);
- log_text("loader_init: proto_java_lang_NullPointerException has been initialized");
+static void loader_compute_class_values(classinfo *c);
- proto_java_lang_ArrayIndexOutOfBoundsException =
- builtin_new(class_java_lang_ArrayIndexOutOfBoundsException);
- heap_addreference ( (void**) &proto_java_lang_ArrayIndexOutOfBoundsException);
+void loader_compute_subclasses(classinfo *c)
+{
+#if defined(USE_THREADS)
+#if defined(NATIVE_THREADS)
+ compiler_lock();
+#else
+ intsDisable();
+#endif
+#endif
- proto_java_lang_NegativeArraySizeException =
- builtin_new(class_java_lang_NegativeArraySizeException);
- heap_addreference ( (void**) &proto_java_lang_NegativeArraySizeException);
+ if (!(c->flags & ACC_INTERFACE)) {
+ c->nextsub = 0;
+ c->sub = 0;
+ }
- proto_java_lang_OutOfMemoryError =
- builtin_new(class_java_lang_OutOfMemoryError);
- heap_addreference ( (void**) &proto_java_lang_OutOfMemoryError);
+ if (!(c->flags & ACC_INTERFACE) && (c->super != NULL)) {
+ c->nextsub = c->super->sub;
+ c->super->sub = c;
+ }
- proto_java_lang_ArithmeticException =
- builtin_new(class_java_lang_ArithmeticException);
- heap_addreference ( (void**) &proto_java_lang_ArithmeticException);
+ classvalue = 0;
- proto_java_lang_ArrayStoreException =
- builtin_new(class_java_lang_ArrayStoreException);
- heap_addreference ( (void**) &proto_java_lang_ArrayStoreException);
+ /* this is the java.lang.Object special case */
- proto_java_lang_ThreadDeath = /* schani */
- builtin_new(class_java_lang_ThreadDeath);
- heap_addreference ( (void**) &proto_java_lang_ThreadDeath);
+ if (!class_java_lang_Object) {
+ loader_compute_class_values(c);
- loader_inited = 1;
+ } else {
+ loader_compute_class_values(class_java_lang_Object);
+ }
+#if defined(USE_THREADS)
+#if defined(NATIVE_THREADS)
+ compiler_unlock();
+#else
+ intsRestore();
+#endif
+#endif
}
+/* loader_compute_class_values *************************************************
-
-/********************* Function: loader_initclasses ****************************
-
- Initializes all loaded but uninitialized classes
+ XXX
*******************************************************************************/
-void loader_initclasses ()
-{
- classinfo *c;
-
- intsDisable(); /* schani */
-
- if (makeinitializations) {
- c = list_first (&linkedclasses);
- while (c) {
- class_init (c);
- c = list_next (&linkedclasses, c);
- }
- }
-
- intsRestore(); /* schani */
-}
-
-static s4 classvalue;
-
-static void loader_compute_class_values (classinfo *c)
+static void loader_compute_class_values(classinfo *c)
{
classinfo *subs;
c->vftbl->baseval = ++classvalue;
subs = c->sub;
- while (subs != NULL) {
+ while (subs) {
loader_compute_class_values(subs);
subs = subs->nextsub;
- }
- c->vftbl->diffval = classvalue - c->vftbl->baseval;
-
- /*
- {
- int i;
- for (i = 0; i < c->index; i++)
- printf(" ");
- printf("%3d %3d ", (int) c->vftbl->baseval, c->vftbl->diffval);
- utf_display(c->name);
- printf("\n");
}
- */
-
-}
-
-
-void loader_compute_subclasses ()
-{
- classinfo *c;
-
- intsDisable(); /* schani */
-
- c = list_first (&linkedclasses);
- while (c) {
- if (!(c->flags & ACC_INTERFACE)) {
- c->nextsub = 0;
- c->sub = 0;
- }
- c = list_next (&linkedclasses, c);
- }
-
- c = list_first (&linkedclasses);
- while (c) {
- if (!(c->flags & ACC_INTERFACE) && (c->super != NULL)) {
- c->nextsub = c->super->sub;
- c->super->sub = c;
- }
- c = list_next (&linkedclasses, c);
- }
- classvalue = 0;
- loader_compute_class_values(class_java_lang_Object);
-
- intsRestore(); /* schani */
-}
-
-
-
-/******************** function classloader_buffer ******************************
-
- sets buffer for reading classdata
-
-*******************************************************************************/
-void classload_buffer(u1 *buf, int len)
-{
- classbuffer = buf;
- classbuffer_size = len;
- classbuf_pos = buf - 1;
+ c->vftbl->diffval = classvalue - c->vftbl->baseval;
}
*******************************************************************************/
-void loader_close ()
+void loader_close()
{
classinfo *c;
+ s4 slot;
- while ( (c=list_first(&unloadedclasses)) ) {
- list_remove (&unloadedclasses,c);
- class_free (c);
- }
- while ( (c=list_first(&unlinkedclasses)) ) {
- list_remove (&unlinkedclasses,c);
- class_free (c);
- }
- while ( (c=list_first(&linkedclasses)) ) {
- list_remove (&linkedclasses,c);
- class_free (c);
+ for (slot = 0; slot < class_hash.size; slot++) {
+ c = class_hash.ptr[slot];
+
+ while (c) {
+ class_free(c);
+ c = c->hashlink;
}
+ }
}
projects / cacao.git / blobdiff