-/* vm/loader.c - class loader functions
+/* src/vm/loader.c - class loader functions
- 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
+ Copyright (C) 1996-2005, 2006 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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA.
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA.
- Contact: cacao@complang.tuwien.ac.at
+ Contact: cacao@cacaojvm.org
Authors: Reinhard Grafl
Edwin Steiner
Christian Thalinger
- $Id: loader.c 1801 2004-12-21 20:19:19Z jowenn $
+ $Id: loader.c 4357 2006-01-22 23:33:38Z twisti $
*/
+#include "config.h"
+
#include <stdlib.h>
#include <string.h>
#include <assert.h>
-#include <sys/stat.h>
+
+#include "vm/types.h"
#include "mm/memory.h"
#include "native/native.h"
#endif
#include "toolbox/logging.h"
-#include "vm/exceptions.h"
#include "vm/builtin.h"
+#include "vm/classcache.h"
+#include "vm/exceptions.h"
#include "vm/global.h"
+#include "vm/linker.h"
#include "vm/loader.h"
#include "vm/options.h"
#include "vm/statistics.h"
-#include "vm/tables.h"
+#include "vm/stringlocal.h"
+#include "vm/suck.h"
-#if defined(USE_ZLIB)
-# include "vm/unzip.h"
+#if defined(ENABLE_ZLIB)
+# include "vm/zip.h"
#endif
#include "vm/jit/asmpart.h"
-#include "vm/jit/jit.h"
-
-
-#undef JOWENN_DEBUG
-#undef JOWENN_DEBUG1
-#undef JOWENN_DEBUG2
-
-/* global variables ***********************************************************/
-
-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_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 */
-
-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_Cloneable;
-classinfo *class_java_io_Serializable;
-
-/* Pseudo classes for the typechecker */
-classinfo *pseudo_class_Arraystub = NULL;
-classinfo *pseudo_class_Null = NULL;
-classinfo *pseudo_class_New = NULL;
-vftbl_t *pseudo_class_Arraystub_vftbl = NULL;
-
-utf *array_packagename = NULL;
-
-
-/********************************************************************
- list of classpath entries (either filesystem directories or
- ZIP/JAR archives
-********************************************************************/
-
-static classpath_info *classpath_entries = NULL;
-
-
-/******************************************************************************
-
- structure for primitive classes: contains the class for wrapping the
- primitive type, the primitive class, the name of the class for wrapping,
- the one character type signature and the name of the primitive class
-
- ******************************************************************************/
-
-/* CAUTION: Don't change the order of the types. This table is indexed
- * 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 }
-};
-
-
-/************* functions for reading classdata *********************************
-
- getting classdata in blocks of variable size
- (8,16,32,64-bit integer or float)
+#include "vm/jit/codegen-common.h"
-*******************************************************************************/
-
-/* 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");
+/******************************************************************************/
+/* DEBUG HELPERS */
+/******************************************************************************/
- return false;
- }
+#ifndef NDEBUG
+#define LOADER_DEBUG
+#endif
- return true;
-}
+#ifdef LOADER_DEBUG
+#define LOADER_ASSERT(cond) assert(cond)
+#else
+#define LOADER_ASSERT(cond)
+#endif
-/* suck_nbytes *****************************************************************
+/* loader_init *****************************************************************
- transfer block of classfile data into a buffer
+ Initializes all lists and loads all classes required for the system
+ or the compiler.
*******************************************************************************/
-
-inline void suck_nbytes(u1 *buffer, classbuffer *cb, s4 len)
+
+bool loader_init(u1 *stackbottom)
{
- memcpy(buffer, cb->pos + 1, len);
- cb->pos += len;
-}
-
+#if defined(USE_THREADS) && defined(NATIVE_THREADS)
+ list_classpath_entry *lce;
-/* skip_nbytes ****************************************************************
+ /* Initialize the monitor pointer for zip/jar file locking. */
- skip block of classfile data
+ for (lce = list_first(list_classpath_entries); lce != NULL;
+ lce = list_next(list_classpath_entries, lce))
+ if (lce->type == CLASSPATH_ARCHIVE)
+ initObjectLock((java_objectheader *) lce);
+#endif
-*******************************************************************************/
+ /* load some important classes */
-inline void skip_nbytes(classbuffer *cb, s4 len)
-{
- cb->pos += len;
-}
+ if (!(class_java_lang_Object = load_class_bootstrap(utf_java_lang_Object)))
+ return false;
+ if (!(class_java_lang_String = load_class_bootstrap(utf_java_lang_String)))
+ return false;
-inline u1 suck_u1(classbuffer *cb)
-{
- return *++(cb->pos);
-}
+ if (!(class_java_lang_Cloneable =
+ load_class_bootstrap(utf_java_lang_Cloneable)))
+ return false;
+ if (!(class_java_io_Serializable =
+ load_class_bootstrap(utf_java_io_Serializable)))
+ return false;
-inline u2 suck_u2(classbuffer *cb)
-{
- u1 a = suck_u1(cb);
- u1 b = suck_u1(cb);
- return ((u2) a << 8) + (u2) b;
-}
+ /* load classes for wrapping primitive types */
-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;
-}
+ if (!(class_java_lang_Void = load_class_bootstrap(utf_java_lang_Void)))
+ return false;
+ if (!(class_java_lang_Boolean =
+ load_class_bootstrap(utf_java_lang_Boolean)))
+ return false;
-/* get u8 from classfile data */
-static u8 suck_u8(classbuffer *cb)
-{
-#if U8_AVAILABLE
- u8 lo, hi;
- hi = suck_u4(cb);
- lo = suck_u4(cb);
- return (hi << 32) + lo;
-#else
- u8 v;
- v.high = suck_u4(cb);
- v.low = suck_u4(cb);
- return v;
-#endif
-}
+ if (!(class_java_lang_Byte = load_class_bootstrap(utf_java_lang_Byte)))
+ return false;
+ if (!(class_java_lang_Character =
+ load_class_bootstrap(utf_java_lang_Character)))
+ return false;
-#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))
+ if (!(class_java_lang_Short = load_class_bootstrap(utf_java_lang_Short)))
+ return false;
+ if (!(class_java_lang_Integer =
+ load_class_bootstrap(utf_java_lang_Integer)))
+ return false;
-/* get float from classfile data */
-static float suck_float(classbuffer *cb)
-{
- float f;
+ if (!(class_java_lang_Long = load_class_bootstrap(utf_java_lang_Long)))
+ return false;
-#if !WORDS_BIGENDIAN
- u1 buffer[4];
- u2 i;
+ if (!(class_java_lang_Float = load_class_bootstrap(utf_java_lang_Float)))
+ return false;
- for (i = 0; i < 4; i++)
- buffer[3 - i] = suck_u1(cb);
+ if (!(class_java_lang_Double = load_class_bootstrap(utf_java_lang_Double)))
+ return false;
- memcpy((u1*) (&f), buffer, 4);
-#else
- suck_nbytes((u1*) (&f), cb, 4);
-#endif
- if (sizeof(float) != 4) {
- *exceptionptr = new_exception_message(string_java_lang_InternalError,
- "Incompatible float-format");
+ /* load some other important classes */
- /* XXX should we exit in such a case? */
- throw_exception_exit();
- }
-
- return f;
-}
+ if (!(class_java_lang_Class = load_class_bootstrap(utf_java_lang_Class)))
+ return false;
+ if (!(class_java_lang_ClassLoader =
+ load_class_bootstrap(utf_java_lang_ClassLoader)))
+ return false;
-/* get double from classfile data */
-static double suck_double(classbuffer *cb)
-{
- double d;
+ if (!(class_java_lang_SecurityManager =
+ load_class_bootstrap(utf_java_lang_SecurityManager)))
+ return false;
-#if !WORDS_BIGENDIAN
- u1 buffer[8];
- u2 i;
+ if (!(class_java_lang_System = load_class_bootstrap(utf_java_lang_System)))
+ return false;
- for (i = 0; i < 8; i++)
- buffer[7 - i] = suck_u1(cb);
+ if (!(class_java_lang_Thread =
+ load_class_bootstrap(utf_new_char("java/lang/Thread"))))
+ return false;
- memcpy((u1*) (&d), buffer, 8);
-#else
- suck_nbytes((u1*) (&d), cb, 8);
-#endif
+ if (!(class_java_lang_ThreadGroup =
+ load_class_bootstrap(utf_java_lang_ThreadGroup)))
+ return false;
- if (sizeof(double) != 8) {
- *exceptionptr = new_exception_message(string_java_lang_InternalError,
- "Incompatible double-format");
+ if (!(class_java_lang_VMThread =
+ load_class_bootstrap(utf_new_char("java/lang/VMThread"))))
+ return false;
- /* XXX should we exit in such a case? */
- throw_exception_exit();
- }
-
- return d;
-}
+ /* some classes which may be used more often */
-/************************** function suck_init *********************************
+ if (!(class_java_lang_StackTraceElement =
+ load_class_bootstrap(utf_java_lang_StackTraceElement)))
+ return false;
- called once at startup, sets the searchpath for the classfiles
+ if (!(class_java_lang_reflect_Constructor =
+ load_class_bootstrap(utf_java_lang_reflect_Constructor)))
+ return false;
-*******************************************************************************/
+ if (!(class_java_lang_reflect_Field =
+ load_class_bootstrap(utf_java_lang_reflect_Field)))
+ return false;
-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;
- }
- }
+ if (!(class_java_lang_reflect_Method =
+ load_class_bootstrap(utf_java_lang_reflect_Method)))
+ return false;
- /* allocate memory for filename and fill it */
+ if (!(class_java_security_PrivilegedAction =
+ load_class_bootstrap(utf_new_char("java/security/PrivilegedAction"))))
+ return false;
- filename = MNEW(char, filenamelen + 2); /* 2 = "/\0" */
- strncpy(filename, start, filenamelen);
- filename[filenamelen + 1] = '\0';
- cpi = NULL;
+ if (!(class_java_util_Vector = load_class_bootstrap(utf_java_util_Vector)))
+ return false;
- if (is_zip) {
-#if defined(USE_ZLIB)
- unzFile uf = unzOpen(filename);
+ if (!(arrayclass_java_lang_Object =
+ load_class_bootstrap(utf_new_char("[Ljava/lang/Object;"))))
+ return false;
- 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");
+#if defined(USE_THREADS)
+ if (stackbottom != 0)
+ initLocks();
#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;
- }
- }
+ return true;
}
-void create_all_classes()
-{
- 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
- }
-}
-
+/* loader_load_all_classes *****************************************************
-/************************** function suck_start ********************************
+ Loads all classes specified in the BOOTCLASSPATH.
- returns true if classbuffer is already loaded or a file for the
- specified class has succussfully been read in. All directories of
- the searchpath are used to find the classfile (<classname>.class).
- Returns false if no classfile is found and writes an error message.
-
*******************************************************************************/
-classbuffer *suck_start(classinfo *c)
+void loader_load_all_classes(void)
{
- classpath_info *cpi;
-/* char *utf_ptr; */
-/* char ch; */
- char *filename;
- s4 filenamelen;
- char *path;
- FILE *classfile;
- bool found;
- s4 len;
- struct stat buffer;
- classbuffer *cb;
-
-#if 0
- utf_ptr = c->name->text;
-
- while (utf_ptr < utf_end(c->name)) {
- if (filenamelen >= CLASSPATH_MAXFILENAME) {
- *exceptionptr =
- new_exception_message(string_java_lang_InternalError,
- "Filename too long");
+ list_classpath_entry *lce;
+ hashtable *ht;
+ s4 slot;
+ hashtable_zipfile_entry *htzfe;
+ utf *u;
- /* XXX should we exit in such a case? */
- throw_exception_exit();
- }
-
- ch = *utf_ptr++;
- if ((ch <= ' ' || ch > 'z') && (ch != '/')) /* invalid character */
- ch = '?';
- filename[filenamelen++] = ch;
- }
-#endif
+ for (lce = list_first(list_classpath_entries); lce != NULL;
+ lce = list_next(list_classpath_entries, lce)) {
+#if defined(ENABLE_ZLIB)
+ if (lce->type == CLASSPATH_ARCHIVE) {
+ /* get the classes hashtable */
- /* initialize return value */
+ ht = lce->htclasses;
- found = false;
- cb = NULL;
+ for (slot = 0; slot < ht->size; slot++) {
+ htzfe = (hashtable_zipfile_entry *) ht->ptr[slot];
- filenamelen = utf_strlen(c->name) + 7; /* 7 = ".class\0" */
- filename = MNEW(char, filenamelen);
+ for (; htzfe; htzfe = htzfe->hashlink) {
+ u = htzfe->filename;
- utf_sprint(filename, c->name);
- strcat(filename, ".class");
+ /* skip all entries in META-INF and .properties,
+ .png files */
- /* walk through all classpath entries */
+ if (!strncmp(u->text, "META-INF", strlen("META-INF")) ||
+ strstr(u->text, ".properties") ||
+ strstr(u->text, ".png"))
+ continue;
- 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;
+ /* load class from bootstrap classloader */
- 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;
+ if (!load_class_bootstrap(u)) {
+ fprintf(stderr, "Error loading: ");
+ utf_fprint_classname(stderr, u);
+ fprintf(stderr, "\n");
- len = unzReadCurrentFile(cpi->archive.uf, cb->data, cb->size);
+ /* print out exception and cause */
- if (len != cb->size) {
- suck_stop(cb);
- log_text("Error while unzipping");
-
- } else {
- found = true;
- }
-
- } else {
- log_text("Error while opening file in archive");
+ exceptions_print_exception(*exceptionptr);
}
-
- } else {
- log_text("Error while retrieving fileinfo");
}
}
- unzCloseCurrentFile(cpi->archive.uf);
} 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 defined(ENABLE_ZLIB)
}
#endif
}
-
- if (opt_verbose) {
- if (!found)
- dolog("Warning: Can not open class file '%s'", filename);
- }
-
- MFREE(filename, char, filenamelen);
-
- return cb;
-}
-
-
-/************************** function suck_stop *********************************
-
- frees memory for buffer with classfile data.
- Caution: this function may only be called if buffer has been allocated
- by suck_start with reading a file
-
-*******************************************************************************/
-
-void suck_stop(classbuffer *cb)
-{
- /* free memory */
-
- 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_PRIVATE ) fprintf (fp," PRIVATE");
- if ( f & ACC_PROTECTED ) fprintf (fp," PROTECTED");
- if ( f & ACC_STATIC ) fprintf (fp," STATIC");
- if ( f & ACC_FINAL ) fprintf (fp," FINAL");
- if ( f & ACC_SYNCHRONIZED ) fprintf (fp," SYNCHRONIZED");
- if ( f & ACC_VOLATILE ) fprintf (fp," VOLATILE");
- if ( f & ACC_TRANSIENT ) fprintf (fp," TRANSIENT");
- if ( f & ACC_NATIVE ) fprintf (fp," NATIVE");
- if ( f & ACC_INTERFACE ) fprintf (fp," INTERFACE");
- if ( f & ACC_ABSTRACT ) fprintf (fp," ABSTRACT");
-}
-
-
-/********** internal function: printflags (only for debugging) ***************/
-
-void printflags(u2 f)
-{
- if ( f & ACC_PUBLIC ) printf (" PUBLIC");
- if ( f & ACC_PRIVATE ) printf (" PRIVATE");
- if ( f & ACC_PROTECTED ) printf (" PROTECTED");
- if ( f & ACC_STATIC ) printf (" STATIC");
- if ( f & ACC_FINAL ) printf (" FINAL");
- if ( f & ACC_SYNCHRONIZED ) printf (" SYNCHRONIZED");
- if ( f & ACC_VOLATILE ) printf (" VOLATILE");
- if ( f & ACC_TRANSIENT ) printf (" TRANSIENT");
- if ( f & ACC_NATIVE ) printf (" NATIVE");
- if ( f & ACC_INTERFACE ) printf (" INTERFACE");
- if ( f & ACC_ABSTRACT ) printf (" ABSTRACT");
}
-/********************** Function: skipattributebody ****************************
+/* skipattributebody ***********************************************************
- skips an attribute after the 16 bit reference to attribute_name has already
- been read
+ Skips an attribute after the 16 bit reference to attribute_name has
+ already been read.
*******************************************************************************/
{
u4 len;
- if (!check_classbuffer_size(cb, 4))
+ if (!suck_check_classbuffer_size(cb, 4))
return false;
len = suck_u4(cb);
- if (!check_classbuffer_size(cb, len))
+ if (!suck_check_classbuffer_size(cb, len))
return false;
- skip_nbytes(cb, len);
+ suck_skip_nbytes(cb, len);
return true;
}
u4 len;
for (i = 0; i < num; i++) {
- if (!check_classbuffer_size(cb, 2 + 4))
+ if (!suck_check_classbuffer_size(cb, 2 + 4))
return false;
suck_u2(cb);
len = suck_u4(cb);
- if (!check_classbuffer_size(cb, len))
+ if (!suck_check_classbuffer_size(cb, len))
return false;
- skip_nbytes(cb, len);
+ suck_skip_nbytes(cb, len);
}
return true;
}
-/******************** function:: class_getconstant *****************************
+/* load_constantpool ***********************************************************
- 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
+ Loads the constantpool of a class, the entries are transformed into
+ a simpler format by resolving references (a detailed overview of
+ the compact structures can be found in global.h).
*******************************************************************************/
-voidptr class_getconstant(classinfo *c, u4 pos, u4 ctype)
+static bool load_constantpool(classbuffer *cb, descriptor_pool *descpool)
{
- /* 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
+ /* The following structures are used to save information which cannot be
+ processed during the first pass. After the complete constantpool has
+ been traversed the references can be resolved.
+ (only in specific order) */
-*******************************************************************************/
+ /* CONSTANT_Class entries */
+ typedef struct forward_class {
+ struct forward_class *next;
+ u2 thisindex;
+ u2 name_index;
+ } forward_class;
-voidptr innerclass_getconstant(classinfo *c, u4 pos, u4 ctype)
-{
- /* invalid position in constantpool */
- if (pos >= c->cpcount) {
- *exceptionptr = new_classformaterror(c, "Illegal constant pool index");
- return NULL;
- }
+ /* CONSTANT_String */
+ typedef struct forward_string {
+ struct forward_string *next;
+ u2 thisindex;
+ u2 string_index;
+ } forward_string;
- /* constantpool entry of type 0 */
- if (!c->cptags[pos])
- return NULL;
+ /* CONSTANT_NameAndType */
+ typedef struct forward_nameandtype {
+ struct forward_nameandtype *next;
+ u2 thisindex;
+ u2 name_index;
+ u2 sig_index;
+ } forward_nameandtype;
- /* check type of constantpool entry */
- if (c->cptags[pos] != ctype) {
- *exceptionptr = new_classformaterror(c, "Illegal constant pool index");
- return NULL;
- }
-
- return c->cpinfos[pos];
-}
+ /* CONSTANT_Fieldref, CONSTANT_Methodref or CONSTANT_InterfaceMethodref */
+ typedef struct forward_fieldmethint {
+ struct forward_fieldmethint *next;
+ u2 thisindex;
+ u1 tag;
+ u2 class_index;
+ u2 nameandtype_index;
+ } forward_fieldmethint;
-/********************* Function: class_constanttype ****************************
+ classinfo *c;
+ u4 idx;
- Determines the type of a class entry in the ConstantPool
-
-*******************************************************************************/
+ forward_class *forward_classes = NULL;
+ forward_string *forward_strings = NULL;
+ forward_nameandtype *forward_nameandtypes = NULL;
+ forward_fieldmethint *forward_fieldmethints = NULL;
-u4 class_constanttype(classinfo *c, u4 pos)
-{
- if (pos <= 0 || pos >= c->cpcount) {
- *exceptionptr = new_classformaterror(c, "Illegal constant pool index");
- return 0;
- }
+ forward_class *nfc;
+ forward_string *nfs;
+ forward_nameandtype *nfn;
+ forward_fieldmethint *nff;
- return c->cptags[pos];
-}
+ u4 cpcount;
+ u1 *cptags;
+ voidptr *cpinfos;
+ c = cb->class;
-/************************ function: attribute_load ****************************
-
- read attributes from classfile
-
-*******************************************************************************/
-
-static bool attribute_load(classbuffer *cb, classinfo *c, u4 num)
-{
- utf *aname;
- u4 i, j;
-
- for (i = 0; i < num; i++) {
- /* 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) {
- /* innerclasses attribute */
- if (c->innerclass) {
- *exceptionptr =
- new_classformaterror(c, "Multiple InnerClasses attributes");
- return false;
- }
-
- if (!check_classbuffer_size(cb, 4 + 2))
- return false;
-
- /* skip attribute length */
- suck_u4(cb);
-
- /* number of records */
- c->innerclasscount = suck_u2(cb);
-
- 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(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;
- }
+ /* number of entries in the constant_pool table plus one */
+ if (!suck_check_classbuffer_size(cb, 2))
+ return false;
- if (c->sourcefile) {
- *exceptionptr =
- new_classformaterror(c, "Multiple SourceFile attributes");
- return false;
- }
+ cpcount = c->cpcount = suck_u2(cb);
- if (!(c->sourcefile = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
- return false;
+ /* allocate memory */
+ cptags = c->cptags = MNEW(u1, cpcount);
+ cpinfos = c->cpinfos = MNEW(voidptr, cpcount);
- } else {
- /* unknown attribute */
- if (!skipattributebody(cb))
- return false;
- }
+ if (cpcount < 1) {
+ exceptions_throw_classformaterror(c, "Illegal constant pool size");
+ return false;
}
-
- return true;
-}
-
-
-/******************* function: checkfielddescriptor ****************************
-
- checks whether a field-descriptor is valid and aborts otherwise
- all referenced classes are inserted into the list of unloaded classes
-
-*******************************************************************************/
-
-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;
-
- switch (*utf_ptr++) {
- case 'B':
- case 'C':
- case 'I':
- case 'S':
- case 'Z':
- case 'J':
- case 'F':
- case 'D':
- /* primitive type */
- break;
-
- case '[':
- case 'L':
- if (!class_from_descriptor(start,end_pos,&utf_ptr,CLASSLOAD_NEW))
- panic ("Ill formed descriptor");
- break;
-
- default:
- panic ("Ill formed descriptor");
- }
- /* exceeding characters */
- if (utf_ptr!=end_pos) panic ("descriptor has exceeding chars");
+#if defined(ENABLE_STATISTICS)
+ if (opt_stat)
+ count_const_pool_len += (sizeof(voidptr) + 1) * cpcount;
#endif
-}
-
-
-/******************* function checkmethoddescriptor ****************************
-
- 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 int checkmethoddescriptor(classinfo *c, utf *descriptor)
-{
- 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 */
- 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);
+ /* initialize constantpool */
+ for (idx = 0; idx < cpcount; idx++) {
+ cptags[idx] = CONSTANT_UNUSED;
+ cpinfos[idx] = NULL;
}
- if (utf_ptr == end_pos)
- panic("Missing ')' in method descriptor");
+
+ /******* first pass *******/
+ /* entries which cannot be resolved now are written into
+ temporary structures and traversed again later */
+
+ idx = 1;
+ while (idx < cpcount) {
+ u4 t;
- utf_ptr++; /* skip ')' */
+ /* get constant type */
+ if (!suck_check_classbuffer_size(cb, 1))
+ return false;
- class_from_descriptor(utf_ptr,
- end_pos,
- NULL,
- CLASSLOAD_NEW |
- CLASSLOAD_NULLPRIMITIVE |
- CLASSLOAD_CHECKEND);
+ t = suck_u1(cb);
- if (argcount > 255) {
- *exceptionptr =
- new_classformaterror(c, "Too many arguments in signature");
+ switch (t) {
+ case CONSTANT_Class:
+ nfc = DNEW(forward_class);
- return 0;
- }
+ nfc->next = forward_classes;
+ forward_classes = nfc;
- return argcount;
+ nfc->thisindex = idx;
+ /* reference to CONSTANT_NameAndType */
+ if (!suck_check_classbuffer_size(cb, 2))
+ return false;
- /* XXX use the following if -noverify */
-#if 0
- /* check arguments */
- while ((c = *utf_ptr++) != ')') {
- start = utf_ptr-1;
-
- switch (c) {
- case 'B':
- case 'C':
- case 'I':
- case 'S':
- case 'Z':
- case 'J':
- case 'F':
- case 'D':
- /* primitive type */
- break;
+ nfc->name_index = suck_u2(cb);
- case '[':
- case 'L':
- if (!class_from_descriptor(start,end_pos,&utf_ptr,CLASSLOAD_NEW))
- panic ("Ill formed method descriptor");
+ idx++;
break;
- default:
- panic ("Ill formed methodtype-descriptor");
- }
- }
-
- /* check returntype */
- if (*utf_ptr=='V') {
- /* returntype void */
- if ((utf_ptr+1) != end_pos) panic ("Method-descriptor has exceeding chars");
- }
- 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)
-{
- if (!desc) {
- fprintf(file, "<NULL>");
- return;
- }
-
- fprintf(file, "{");
- if (desc->componentvftbl) {
- if (desc->componentvftbl->class)
- utf_fprint(file, desc->componentvftbl->class->name);
- else
- fprintf(file, "<no classinfo>");
- }
- else
- fprintf(file, "0");
-
- fprintf(file, ",");
- if (desc->elementvftbl) {
- if (desc->elementvftbl->class)
- utf_fprint(file, desc->elementvftbl->class->name);
- else
- fprintf(file, "<no classinfo>");
- }
- else
- fprintf(file, "0");
- fprintf(file, ",%d,%d,%d,%d}", desc->arraytype, desc->dimension,
- desc->dataoffset, desc->componentsize);
-}
-
-
-/******************************************************************************/
-/************************** Functions for fields ****************************/
-/******************************************************************************/
-
-
-/* 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.
-
-*******************************************************************************/
+ case CONSTANT_String:
+ nfs = DNEW(forward_string);
+
+ nfs->next = forward_strings;
+ forward_strings = nfs;
+
+ nfs->thisindex = idx;
-#define field_load_NOVALUE 0xffffffff /* must be bigger than any u2 value! */
+ /* reference to CONSTANT_Utf8_info with string characters */
+ if (!suck_check_classbuffer_size(cb, 2))
+ return false;
-static bool field_load(classbuffer *cb, classinfo *c, fieldinfo *f)
-{
- u4 attrnum, i;
- u4 jtype;
- u4 pindex = field_load_NOVALUE; /* constantvalue_index */
- utf *u;
+ nfs->string_index = suck_u2(cb);
+
+ idx++;
+ break;
- if (!check_classbuffer_size(cb, 2 + 2 + 2))
- return false;
+ case CONSTANT_NameAndType:
+ nfn = DNEW(forward_nameandtype);
+
+ nfn->next = forward_nameandtypes;
+ forward_nameandtypes = nfn;
+
+ nfn->thisindex = idx;
- f->flags = suck_u2(cb);
+ if (!suck_check_classbuffer_size(cb, 2 + 2))
+ return false;
- if (!(u = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
- return false;
- f->name = u;
+ /* reference to CONSTANT_Utf8_info containing simple name */
+ nfn->name_index = suck_u2(cb);
- if (!(u = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
- return false;
- f->descriptor = u;
+ /* reference to CONSTANT_Utf8_info containing field or method
+ descriptor */
+ nfn->sig_index = suck_u2(cb);
+
+ idx++;
+ break;
- 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);
+ case CONSTANT_Fieldref:
+ case CONSTANT_Methodref:
+ case CONSTANT_InterfaceMethodref:
+ nff = DNEW(forward_fieldmethint);
+
+ nff->next = forward_fieldmethints;
+ forward_fieldmethints = nff;
- 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;
- }
+ nff->thisindex = idx;
+ /* constant type */
+ nff->tag = t;
- 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);
+ if (!suck_check_classbuffer_size(cb, 2 + 2))
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
- }
+ /* class or interface type that contains the declaration of the
+ field or method */
+ nff->class_index = suck_u2(cb);
- /* read attributes */
- if (!check_classbuffer_size(cb, 2))
- return false;
+ /* name and descriptor of the field or method */
+ nff->nameandtype_index = suck_u2(cb);
- attrnum = suck_u2(cb);
- for (i = 0; i < attrnum; i++) {
- if (!check_classbuffer_size(cb, 2))
- return false;
+ idx++;
+ break;
+
+ case CONSTANT_Integer: {
+ constant_integer *ci = NEW(constant_integer);
- if (!(u = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
- return false;
+#if defined(ENABLE_STATISTICS)
+ if (opt_stat)
+ count_const_pool_len += sizeof(constant_integer);
+#endif
- 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;
- }
-
- /* constant value attribute */
- if (pindex != field_load_NOVALUE) {
- *exceptionptr =
- new_classformaterror(c,
- "Multiple ConstantValue attributes");
- return false;
- }
-
- /* index of value in constantpool */
- pindex = suck_u2(cb);
-
- /* initialize field with value from constantpool */
- switch (jtype) {
- 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;
-
- 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;
-
- 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)
-{
- /* empty */
-}
-
-
-/**************** Function: field_display (debugging only) ********************/
-
-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));
-}
-
-
-/******************************************************************************/
-/************************* Functions for methods ******************************/
-/******************************************************************************/
-
-
-/* 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.
-
-*******************************************************************************/
-
-static bool method_load(classbuffer *cb, classinfo *c, methodinfo *m)
-{
- s4 argcount;
- s4 i, j;
- u4 attrnum;
- u4 codeattrnum;
- utf *u;
-
-#if defined(USE_THREADS) && defined(NATIVE_THREADS)
- initObjectLock(&m->header);
-#endif
-
-#ifdef STATISTICS
- if (opt_stat)
- count_all_methods++;
-#endif
-
- m->thrownexceptionscount = 0;
- m->linenumbercount = 0;
- m->linenumbers = 0;
- m->class = c;
- m->nativelyoverloaded = false;
-
- if (!check_classbuffer_size(cb, 2 + 2 + 2))
- return false;
-
- 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");
- }
-
- 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;
- }
-
- /* 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(cb);
- for (i = 0; i < attrnum; i++) {
- utf *aname;
-
- 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");
-
- return false;
- }
-
- if (m->jcode) {
- *exceptionptr =
- new_classformaterror(c, "Multiple Code attributes");
-
- 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 (j = 0; j < m->exceptiontablelength; j++) {
- u4 idx;
- 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--;
-
- if (!skipattributes(cb, codeattrnum))
- return false;
-
- break;
-
- } else {
- if (!skipattributebody(cb))
- return false;
- }
- }
-
- } else if (aname == utf_exceptions) {
- s4 j;
-
- if (m->thrownexceptions) {
- *exceptionptr =
- new_classformaterror(c, "Multiple Exceptions attributes");
- return false;
- }
-
- if (!check_classbuffer_size(cb, 4 + 2))
- return false;
-
- suck_u4(cb); /* length */
- m->thrownexceptionscount = suck_u2(cb);
-
- 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");
-
- return false;
- }
-
- /* everything was ok */
- /* utf_display(m->name);
- printf("\nexceptiontablelength:%ld\n",m->exceptiontablelength);*/
-
- return true;
-}
-
-
-/********************* Function: method_free ***********************************
-
- frees all memory that was allocated for this method
-
-*******************************************************************************/
-
-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);
- }
- }
-}
-
-
-/************** Function: method_display (debugging only) **************/
-
-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) **************/
-
-void method_display_w_class(methodinfo *m)
-{
- 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);
-}
-
-/************** Function: method_display_flags_last (debugging only) **************/
-
-void method_display_flags_last(methodinfo *m)
-{
- printf(" ");
- utf_display(m->name);
- printf(" ");
- utf_display(m->descriptor);
- printf(" ");
- printflags(m->flags);
- printf("\n");
-}
-
-
-/******************** Function: method_canoverwrite ****************************
-
- Check if m and old are identical with respect to type and name. This means
- that old can be overwritten with m.
-
-*******************************************************************************/
-
-static bool method_canoverwrite(methodinfo *m, methodinfo *old)
-{
- if (m->name != old->name) return false;
- if (m->descriptor != old->descriptor) return false;
- if (m->flags & ACC_STATIC) return false;
- return true;
-}
-
-
-/******************** function: class_loadcpool ********************************
-
- loads the constantpool of a class,
- the entries are transformed into a simpler format
- by resolving references
- (a detailed overview of the compact structures can be found in global.h)
-
-*******************************************************************************/
-
-static bool class_loadcpool(classbuffer *cb, classinfo *c)
-{
-
- /* The following structures are used to save information which cannot be
- processed during the first pass. After the complete constantpool has
- been traversed the references can be resolved.
- (only in specific order) */
-
- /* 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;
-
- /* CONSTANT_NameAndType */
- typedef struct forward_nameandtype {
- struct forward_nameandtype *next;
- u2 thisindex;
- u2 name_index;
- u2 sig_index;
- } forward_nameandtype;
-
- /* CONSTANT_Fieldref, CONSTANT_Methodref or CONSTANT_InterfaceMethodref */
- typedef struct forward_fieldmethint {
- struct forward_fieldmethint *next;
- u2 thisindex;
- u1 tag;
- u2 class_index;
- u2 nameandtype_index;
- } forward_fieldmethint;
-
-
- u4 idx;
-
- forward_class *forward_classes = NULL;
- forward_string *forward_strings = NULL;
- forward_nameandtype *forward_nameandtypes = NULL;
- forward_fieldmethint *forward_fieldmethints = NULL;
-
- 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 */
- cptags = c->cptags = MNEW(u1, cpcount);
- cpinfos = c->cpinfos = MNEW(voidptr, 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++) {
- cptags[idx] = CONSTANT_UNUSED;
- cpinfos[idx] = NULL;
- }
-
-
- /******* 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 */
- if (!check_classbuffer_size(cb, 1))
- return false;
-
- t = suck_u1(cb);
-
- switch (t) {
- case CONSTANT_Class:
- nfc = NEW(forward_class);
-
- nfc->next = forward_classes;
- forward_classes = nfc;
-
- 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_String:
- nfs = NEW(forward_string);
-
- nfs->next = forward_strings;
- forward_strings = nfs;
-
- 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;
-
- case CONSTANT_NameAndType:
- nfn = NEW(forward_nameandtype);
-
- nfn->next = forward_nameandtypes;
- forward_nameandtypes = nfn;
-
- 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;
-
- case CONSTANT_Fieldref:
- case CONSTANT_Methodref:
- case CONSTANT_InterfaceMethodref:
- nff = NEW(forward_fieldmethint);
-
- nff->next = forward_fieldmethints;
- forward_fieldmethints = nff;
-
- 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);
-
- /* name and descriptor of the field or method */
- nff->nameandtype_index = suck_u2(cb);
-
- idx++;
- 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))
+ if (!suck_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);
-
-#if defined(STATISTICS)
- if (opt_stat)
- count_const_pool_len += sizeof(constant_float);
-#endif
-
- 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);
-
-#if defined(STATISTICS)
- if (opt_stat)
- count_const_pool_len += sizeof(constant_long);
-#endif
-
- 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);
-
-#if defined(STATISTICS)
- if (opt_stat)
- count_const_pool_len += sizeof(constant_double);
-#endif
-
- 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: {
- 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:
- *exceptionptr =
- new_classformaterror(c, "Illegal constant pool type");
- return false;
- } /* end switch */
- } /* end while */
-
-
- /* resolve entries in temporary structures */
-
- while (forward_classes) {
- utf *name =
- class_getconstant(c, forward_classes->name_index, CONSTANT_Utf8);
-
- 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 */
- if (opt_eager) {
- classinfo *tc;
- tc = class_new_intern(name);
-
- 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);
-
- /* resolve utf-string */
- cptags[forward_strings->thisindex] = CONSTANT_String;
- cpinfos[forward_strings->thisindex] = text;
-
- nfs = forward_strings;
- forward_strings = forward_strings->next;
- FREE(nfs, forward_string);
- }
-
- while (forward_nameandtypes) {
- constant_nameandtype *cn = NEW(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);
-
- 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) {
- constant_nameandtype *nat;
- constant_FMIref *fmi = NEW(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);
-
- fmi->class = class_getconstant(c,
- forward_fieldmethints->class_index,
- CONSTANT_Class);
- fmi->name = nat->name;
- fmi->descriptor = nat->descriptor;
+ cptags[idx] = CONSTANT_Integer;
+ cpinfos[idx] = ci;
- cptags[forward_fieldmethints->thisindex] = forward_fieldmethints->tag;
- cpinfos[forward_fieldmethints->thisindex] = fmi;
-
- switch (forward_fieldmethints->tag) {
- case CONSTANT_Fieldref: /* check validity of descriptor */
- checkfielddescriptor(fmi->descriptor->text,
- utf_end(fmi->descriptor));
- break;
- case CONSTANT_InterfaceMethodref:
- case CONSTANT_Methodref: /* check validity of descriptor */
- checkmethoddescriptor(c, fmi->descriptor);
+ idx++;
break;
}
-
- nff = forward_fieldmethints;
- forward_fieldmethints = forward_fieldmethints->next;
- FREE(nff, forward_fieldmethint);
- }
-
- /* everything was ok */
-
- return true;
-}
-
-
-/********************** Function: class_load ***********************************
-
- Loads everything interesting about a class from the class file. The
- 'classinfo' structure must have been allocated previously.
-
- The super class and the interfaces implemented by this class need not be
- loaded. The link is set later by the function 'class_link'.
-
- The loaded class is removed from the list 'unloadedclasses' and added to
- the list 'unlinkedclasses'.
-
-*******************************************************************************/
-
-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 ma, mi;
- char msg[MAXLOGTEXT]; /* maybe we get an exception */
-
- /* 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)
- log_message_class("Loading class: ", c);
-
- /* class is somewhat loaded */
- c->loaded = true;
-
- 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 version */
- 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;
-
- /*JOWENN*/
- c->erroneous_state = 0;
- c->initializing_thread = 0;
- /*JOWENN*/
- c->classUsed = NOTUSED; /* not used initially CO-RT */
- c->impldBy = NULL;
-
- /* ACC flags */
- 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 */
- 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(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;
-
- /* 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 */
- 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 */
- if (!check_classbuffer_size(cb, 2))
- return NULL;
-
- 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 */
- 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++;
- }
- }
-
- /* Check fields */
- memset(hashtab, 0, sizeof(u2) * (hashlen + len));
+
+ case CONSTANT_Float: {
+ constant_float *cf = NEW(constant_float);
- for (i = 0; i < c->fieldscount; ++i) {
- fieldinfo *fi = c->fields + i;
+#if defined(ENABLE_STATISTICS)
+ if (opt_stat)
+ count_const_pool_len += sizeof(constant_float);
+#endif
- /* It's ok if we lose bits here */
- index = ((((size_t) fi->name) +
- ((size_t) fi->descriptor)) >> shift) % hashlen;
+ if (!suck_check_classbuffer_size(cb, 4))
+ return false;
- 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");
+ cf->value = suck_float(cb);
+ cptags[idx] = CONSTANT_Float;
+ cpinfos[idx] = cf;
- return NULL;
- }
- } while ((old = next[old]));
- }
- hashtab[index] = i + 1;
+ idx++;
+ break;
}
-
- /* Check methods */
- memset(hashtab, 0, sizeof(u2) * (hashlen + hashlen/5));
-
- for (i = 0; i < c->methodscount; ++i) {
- methodinfo *mi = c->methods + i;
+
+ case CONSTANT_Long: {
+ constant_long *cl = NEW(constant_long);
+
+#if defined(ENABLE_STATISTICS)
+ if (opt_stat)
+ count_const_pool_len += sizeof(constant_long);
+#endif
- /* It's ok if we lose bits here */
- index = ((((size_t) mi->name) +
- ((size_t) mi->descriptor)) >> shift) % hashlen;
+ if (!suck_check_classbuffer_size(cb, 8))
+ return false;
- /*{ JOWENN
- int dbg;
- for (dbg=0;dbg<hashlen+hashlen/5;++dbg){
- printf("Hash[%d]:%d\n",dbg,hashtab[dbg]);
- }
- }*/
+ cl->value = suck_s8(cb);
+ cptags[idx] = CONSTANT_Long;
+ cpinfos[idx] = cl;
+ idx += 2;
+ if (idx > cpcount) {
+ exceptions_throw_classformaterror(c, "Invalid constant pool entry");
+ return false;
+ }
+ break;
+ }
+
+ case CONSTANT_Double: {
+ constant_double *cd = NEW(constant_double);
+
+#if defined(ENABLE_STATISTICS)
+ if (opt_stat)
+ count_const_pool_len += sizeof(constant_double);
+#endif
- 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");
+ if (!suck_check_classbuffer_size(cb, 8))
+ return false;
- return NULL;
- }
- } while ((old = next[old]));
+ cd->value = suck_double(cb);
+ cptags[idx] = CONSTANT_Double;
+ cpinfos[idx] = cd;
+ idx += 2;
+ if (idx > cpcount) {
+ exceptions_throw_classformaterror(c, "Invalid constant pool entry");
+ return false;
}
- hashtab[index] = i + 1;
+ break;
}
-
- MFREE(hashtab, u2, (hashlen + len));
- }
+
+ case CONSTANT_Utf8: {
+ u4 length;
-#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
+ /* number of bytes in the bytes array (not string-length) */
+ if (!suck_check_classbuffer_size(cb, 2))
+ return false;
- /* load attribute structures */
- if (!check_classbuffer_size(cb, 2))
- return NULL;
+ length = suck_u2(cb);
+ cptags[idx] = CONSTANT_Utf8;
- if (!attribute_load(cb, c, suck_u2(cb)))
- return NULL;
+ /* validate the string */
+ if (!suck_check_classbuffer_size(cb, length))
+ return false;
-#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);
+#ifdef ENABLE_VERIFIER
+ if (opt_verify &&
+ !is_valid_utf((char *) cb->pos, (char *) (cb->pos + length)))
+ {
+ exceptions_throw_classformaterror(c, "Invalid UTF-8 string");
+ return false;
+ }
+#endif /* ENABLE_VERIFIER */
+ /* insert utf-string into the utf-symboltable */
+ cpinfos[idx] = utf_new((char *) cb->pos, length);
- if (classdata_left > 0) {
- *exceptionptr =
- new_classformaterror(c, "Extra bytes at the end of class file");
- return NULL;
+ /* skip bytes of the string (buffer size check above) */
+ suck_skip_nbytes(cb, length);
+ idx++;
+ break;
}
- }
-#endif
+
+ default:
+ exceptions_throw_classformaterror(c, "Illegal constant pool type");
+ return false;
+ } /* end switch */
+ } /* end while */
- if (loadverbose)
- log_message_class("Loading done class: ", c);
- return c;
-}
+ /* resolve entries in temporary structures */
+ while (forward_classes) {
+ utf *name =
+ class_getconstant(c, forward_classes->name_index, CONSTANT_Utf8);
+ if (!name)
+ return false;
+#ifdef ENABLE_VERIFIER
+ if (opt_verify && !is_valid_name_utf(name)) {
+ exceptions_throw_classformaterror(c, "Class reference with invalid name");
+ return false;
+ }
+#endif /* ENABLE_VERIFIER */
-/************** internal Function: class_highestinterface **********************
+ /* add all class references to the descriptor_pool */
- Used by the function class_link to determine the amount of memory needed
- for the interface table.
+ if (!descriptor_pool_add_class(descpool, name))
+ return false;
-*******************************************************************************/
+ cptags[forward_classes->thisindex] = CONSTANT_Class;
-static s4 class_highestinterface(classinfo *c)
-{
- s4 h;
- s4 i;
-
- /* check for ACC_INTERFACE bit already done in class_link_intern */
+ if (opt_eager) {
+ classinfo *tc;
- h = c->index;
- for (i = 0; i < c->interfacescount; i++) {
- s4 h2 = class_highestinterface(c->interfaces[i]);
- if (h2 > h) h = h2;
- }
+ if (!(tc = load_class_bootstrap(name)))
+ return false;
- return h;
-}
+ /* link the class later, because we cannot link the class currently
+ loading */
+ list_addfirst(&unlinkedclasses, tc);
+ }
+ /* the classref is created later */
+ cpinfos[forward_classes->thisindex] = name;
-/* class_addinterface **********************************************************
+ nfc = forward_classes;
+ forward_classes = forward_classes->next;
+ }
- Is needed by class_link for adding a VTBL to a class. All interfaces
- implemented by ic are added as well.
+ while (forward_strings) {
+ utf *text =
+ class_getconstant(c, forward_strings->string_index, CONSTANT_Utf8);
+ if (!text)
+ return false;
-*******************************************************************************/
+ /* resolve utf-string */
+ cptags[forward_strings->thisindex] = CONSTANT_String;
+ cpinfos[forward_strings->thisindex] = text;
+
+ nfs = forward_strings;
+ forward_strings = forward_strings->next;
+ }
-static void class_addinterface(classinfo *c, classinfo *ic)
-{
- s4 j, m;
- s4 i = ic->index;
- vftbl_t *v = c->vftbl;
+ while (forward_nameandtypes) {
+ constant_nameandtype *cn = NEW(constant_nameandtype);
- if (i >= v->interfacetablelength)
- panic ("Inernal error: interfacetable overflow");
+#if defined(ENABLE_STATISTICS)
+ if (opt_stat)
+ count_const_pool_len += sizeof(constant_nameandtype);
+#endif
- if (v->interfacetable[-i])
- return;
+ /* resolve simple name and descriptor */
+ cn->name = class_getconstant(c,
+ forward_nameandtypes->name_index,
+ CONSTANT_Utf8);
+ if (!cn->name)
+ return false;
- if (ic->methodscount == 0) { /* fake entry needed for subtype test */
- v->interfacevftbllength[i] = 1;
- v->interfacetable[-i] = MNEW(methodptr, 1);
- v->interfacetable[-i][0] = NULL;
+ cn->descriptor = class_getconstant(c,
+ forward_nameandtypes->sig_index,
+ CONSTANT_Utf8);
+ if (!cn->descriptor)
+ return false;
- } else {
- v->interfacevftbllength[i] = ic->methodscount;
- v->interfacetable[-i] = MNEW(methodptr, ic->methodscount);
+#ifdef ENABLE_VERIFIER
+ if (opt_verify) {
+ /* check name */
+ if (!is_valid_name_utf(cn->name)) {
+ exceptions_throw_classformaterror(c,
+ "Illegal Field name \"%s\"",
+ cn->name->text);
-#if defined(STATISTICS)
- if (opt_stat)
- count_vftbl_len += sizeof(methodptr) *
- (ic->methodscount + (ic->methodscount == 0));
-#endif
+ return false;
+ }
- 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]))) {
- v->interfacetable[-i][j] = v->table[mi->vftblindex];
- goto foundmethod;
- }
- }
- sc = sc->super;
+ /* disallow referencing <clinit> among others */
+ if (cn->name->text[0] == '<' && cn->name != utf_init) {
+ exceptions_throw_classformaterror(c, "Illegal reference to special method");
+ return false;
}
- foundmethod:
- ;
}
- }
+#endif /* ENABLE_VERIFIER */
- for (j = 0; j < ic->interfacescount; j++)
- class_addinterface(c, ic->interfaces[j]);
-}
+ cptags[forward_nameandtypes->thisindex] = CONSTANT_NameAndType;
+ cpinfos[forward_nameandtypes->thisindex] = cn;
+ nfn = forward_nameandtypes;
+ forward_nameandtypes = forward_nameandtypes->next;
+ }
-/******************* Function: class_new_array *********************************
+ while (forward_fieldmethints) {
+ constant_nameandtype *nat;
+ constant_FMIref *fmi = NEW(constant_FMIref);
- This function is called by class_new to setup an array class.
+#if defined(ENABLE_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);
+ if (!nat)
+ return false;
-void class_new_array(classinfo *c)
-{
- classinfo *comp = NULL;
- methodinfo *clone;
- int namelen;
+ /* add all descriptors in {Field,Method}ref to the descriptor_pool */
- /* Check array class name */
- namelen = c->name->blength;
- if (namelen < 2 || c->name->text[0] != '[')
- panic("Invalid array class name");
+ if (!descriptor_pool_add(descpool, nat->descriptor, NULL))
+ return false;
- /* Check the component type */
- switch (c->name->text[1]) {
- 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);
+ /* the classref is created later */
- } else {
- comp = class_new(utf_new_intern(c->name->text + 1, namelen - 1));
- }
- break;
+ fmi->classref = (constant_classref *) (size_t) forward_fieldmethints->class_index;
+ fmi->name = nat->name;
+ fmi->descriptor = nat->descriptor;
- case 'L':
- /* c is an array of objects. */
- if (namelen < 4 || c->name->text[namelen - 1] != ';')
- panic("Invalid array class name");
+ cptags[forward_fieldmethints->thisindex] = forward_fieldmethints->tag;
+ cpinfos[forward_fieldmethints->thisindex] = fmi;
+
+ nff = forward_fieldmethints;
+ forward_fieldmethints = forward_fieldmethints->next;
+ }
- if (opt_eager) {
- comp = class_new_intern(utf_new_intern(c->name->text + 2,
- namelen - 3));
- class_load(comp);
- list_addfirst(&unlinkedclasses, comp);
+ /* everything was ok */
- } else {
- comp = class_new(utf_new_intern(c->name->text + 2, namelen - 3));
- }
- break;
- }
+ return true;
+}
- /* 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);
+/* load_field ******************************************************************
- if (opt_eager) {
- classinfo *tc;
+ 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.
- 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;
+#define field_load_NOVALUE 0xffffffff /* must be bigger than any u2 value! */
+
+static bool load_field(classbuffer *cb, fieldinfo *f, descriptor_pool *descpool)
+{
+ classinfo *c;
+ u4 attrnum, i;
+ u4 jtype;
+ u4 pindex = field_load_NOVALUE; /* constantvalue_index */
+ utf *u;
- } else {
- c->interfaces[0] = class_new(utf_new_char("java/lang/Cloneable"));
- c->interfaces[1] = class_new(utf_new_char("java/io/Serializable"));
- }
+ c = cb->class;
- c->methodscount = 1;
- c->methods = MNEW(methodinfo, c->methodscount);
+ if (!suck_check_classbuffer_size(cb, 2 + 2 + 2))
+ return false;
- clone = c->methods;
- 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((functionptr) &builtin_clone_array, clone);
- clone->monoPoly = MONO;
+ f->flags = suck_u2(cb);
- /* XXX: field: length? */
+ if (!(u = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
- /* array classes are not loaded from class files */
- c->loaded = true;
-}
+ f->name = u;
+ if (!(u = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
-/****************** Function: class_link_array *********************************
+ f->descriptor = u;
+ f->parseddesc = NULL;
- This function is called by class_link to create the
- arraydescriptor for an array class.
+ if (!descriptor_pool_add(descpool, u, NULL))
+ return false;
- This function returns NULL if the array cannot be linked because
- the component type has not been linked yet.
+ /* descriptor_pool_add accepts method descriptors, so we have to check */
+ /* against them here before the call of descriptor_to_basic_type below. */
+ if (u->text[0] == '(') {
+ exceptions_throw_classformaterror(c, "Method descriptor used for field");
+ return false;
+ }
-*******************************************************************************/
+#ifdef ENABLE_VERIFIER
+ if (opt_verify) {
+ /* check name */
+ if (!is_valid_name_utf(f->name) || f->name->text[0] == '<') {
+ exceptions_throw_classformaterror(c,
+ "Illegal Field name \"%s\"",
+ f->name->text);
+ return false;
+ }
-static arraydescriptor *class_link_array(classinfo *c)
-{
- classinfo *comp = NULL;
- s4 namelen = c->name->blength;
- arraydescriptor *desc;
- vftbl_t *compvftbl;
+ /* check flag consistency */
+ i = f->flags & (ACC_PUBLIC | ACC_PRIVATE | ACC_PROTECTED);
- /* Check the component type */
- switch (c->name->text[1]) {
- 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;
+ if ((i != 0 && i != ACC_PUBLIC && i != ACC_PRIVATE && i != ACC_PROTECTED) ||
+ ((f->flags & (ACC_FINAL | ACC_VOLATILE)) == (ACC_FINAL | ACC_VOLATILE))) {
+ exceptions_throw_classformaterror(c,
+ "Illegal field modifiers: 0x%X",
+ f->flags);
+ return false;
+ }
- 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 (c->flags & ACC_INTERFACE) {
+ if (((f->flags & (ACC_STATIC | ACC_PUBLIC | ACC_FINAL))
+ != (ACC_STATIC | ACC_PUBLIC | ACC_FINAL)) ||
+ f->flags & ACC_TRANSIENT) {
+ exceptions_throw_classformaterror(c,
+ "Illegal field modifiers: 0x%X",
+ f->flags);
+ return false;
+ }
+ }
+ }
+#endif /* ENABLE_VERIFIER */
+
+ f->type = jtype = descriptor_to_basic_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
}
- /* If the component type has not been linked, link it now */
- if (comp && !comp->linked) {
- if (!comp->loaded)
- if (!class_load(comp))
- return NULL;
+ /* read attributes */
+ if (!suck_check_classbuffer_size(cb, 2))
+ return false;
- if (!class_link(comp))
- return NULL;
- }
+ attrnum = suck_u2(cb);
+ for (i = 0; i < attrnum; i++) {
+ if (!suck_check_classbuffer_size(cb, 2))
+ return false;
+
+ if (!(u = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
- /* Allocate the arraydescriptor */
- desc = NEW(arraydescriptor);
+ if (u == utf_ConstantValue) {
+ if (!suck_check_classbuffer_size(cb, 4 + 2))
+ return false;
- if (comp) {
- /* c is an array of references */
- desc->arraytype = ARRAYTYPE_OBJECT;
- desc->componentsize = sizeof(void*);
- desc->dataoffset = OFFSET(java_objectarray, data);
-
- compvftbl = comp->vftbl;
- if (!compvftbl)
- panic("Component class has no vftbl");
- desc->componentvftbl = compvftbl;
+ /* check attribute length */
+ if (suck_u4(cb) != 2) {
+ exceptions_throw_classformaterror(c, "Wrong size for VALUE attribute");
+ return false;
+ }
+
+ /* constant value attribute */
+ if (pindex != field_load_NOVALUE) {
+ exceptions_throw_classformaterror(c, "Multiple ConstantValue attributes");
+ return false;
+ }
+
+ /* index of value in constantpool */
+ pindex = suck_u2(cb);
- 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;
- desc->elementtype = compvftbl->arraydesc->elementtype;
+ /* initialize field with value from constantpool */
+ switch (jtype) {
+ case TYPE_INT: {
+ constant_integer *ci;
- } else {
- desc->elementvftbl = compvftbl;
- desc->dimension = 1;
- desc->elementtype = ARRAYTYPE_OBJECT;
- }
+ if (!(ci = class_getconstant(c, pindex, CONSTANT_Integer)))
+ return false;
- } 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);
+ f->value.i = ci->value;
+ }
break;
+
+ case TYPE_LONG: {
+ constant_long *cl;
- case 'B':
- desc->arraytype = ARRAYTYPE_BYTE;
- desc->dataoffset = OFFSET(java_bytearray,data);
- desc->componentsize = sizeof(u1);
- break;
+ if (!(cl = class_getconstant(c, pindex, CONSTANT_Long)))
+ return false;
- case 'C':
- desc->arraytype = ARRAYTYPE_CHAR;
- desc->dataoffset = OFFSET(java_chararray,data);
- desc->componentsize = sizeof(u2);
+ f->value.l = cl->value;
+ }
break;
- case 'D':
- desc->arraytype = ARRAYTYPE_DOUBLE;
- desc->dataoffset = OFFSET(java_doublearray,data);
- desc->componentsize = sizeof(double);
- break;
+ case TYPE_FLOAT: {
+ constant_float *cf;
- case 'F':
- desc->arraytype = ARRAYTYPE_FLOAT;
- desc->dataoffset = OFFSET(java_floatarray,data);
- desc->componentsize = sizeof(float);
- break;
+ if (!(cf = class_getconstant(c, pindex, CONSTANT_Float)))
+ return false;
- case 'I':
- desc->arraytype = ARRAYTYPE_INT;
- desc->dataoffset = OFFSET(java_intarray,data);
- desc->componentsize = sizeof(s4);
+ f->value.f = cf->value;
+ }
break;
+
+ case TYPE_DOUBLE: {
+ constant_double *cd;
- case 'J':
- desc->arraytype = ARRAYTYPE_LONG;
- desc->dataoffset = OFFSET(java_longarray,data);
- desc->componentsize = sizeof(s8);
- break;
+ if (!(cd = class_getconstant(c, pindex, CONSTANT_Double)))
+ return false;
- case 'S':
- desc->arraytype = ARRAYTYPE_SHORT;
- desc->dataoffset = OFFSET(java_shortarray,data);
- desc->componentsize = sizeof(s2);
+ f->value.d = cd->value;
+ }
break;
+
+ case TYPE_ADDRESS:
+ if (!(u = class_getconstant(c, pindex, CONSTANT_String)))
+ return false;
- default:
- panic("Invalid array class name");
+ /* 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;
}
-
- desc->componentvftbl = NULL;
- desc->elementvftbl = NULL;
- desc->dimension = 1;
- desc->elementtype = desc->arraytype;
}
- return desc;
+ /* everything was ok */
+
+ return true;
}
-/********************** Function: class_link ***********************************
+/* load_method *****************************************************************
- 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.
+ 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 classinfo *class_link_intern(classinfo *c);
-
-classinfo *class_link(classinfo *c)
+static bool load_method(classbuffer *cb, methodinfo *m, descriptor_pool *descpool)
{
- 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);
+ classinfo *c;
+ int argcount;
+ s4 i, j;
+ u4 attrnum;
+ u4 codeattrnum;
+ utf *u;
- return c;
- }
+ c = cb->class;
- /* measure time */
+#if defined(USE_THREADS) && defined(NATIVE_THREADS)
+ initObjectLock(&m->header);
+#endif
- if (getcompilingtime)
- compilingtime_stop();
+#if defined(ENABLE_STATISTICS)
+ if (opt_stat)
+ count_all_methods++;
+#endif
- if (getloadingtime)
- loadingtime_start();
+ m->thrownexceptionscount = 0;
+ m->linenumbercount = 0;
+ m->linenumbers = 0;
+ m->class = c;
+ m->nativelyoverloaded = false;
+
+ if (!suck_check_classbuffer_size(cb, 2 + 2 + 2))
+ return false;
- /* call the internal function */
- r = class_link_intern(c);
+ m->flags = suck_u2(cb);
- /* if return value is NULL, we had a problem and the class is not linked */
- if (!r)
- c->linked = false;
+ if (!(u = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
- /* measure time */
+ m->name = u;
- if (getloadingtime)
- loadingtime_stop();
+ if (!(u = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
- if (getcompilingtime)
- compilingtime_start();
+ m->descriptor = u;
+ m->parseddesc = NULL;
- /* leave the monitor */
+ if (!descriptor_pool_add(descpool, u, &argcount))
+ return false;
- builtin_monitorexit((java_objectheader *) c);
+#ifdef ENABLE_VERIFIER
+ if (opt_verify) {
+ if (!is_valid_name_utf(m->name)) {
+ exceptions_throw_classformaterror(c, "Method with invalid name");
+ return false;
+ }
- return r;
-}
+ if (m->name->text[0] == '<' &&
+ m->name != utf_init && m->name != utf_clinit) {
+ exceptions_throw_classformaterror(c, "Method with invalid special name");
+ return false;
+ }
+ }
+#endif /* ENABLE_VERIFIER */
+
+ if (!(m->flags & ACC_STATIC))
+ argcount++; /* count the 'this' argument */
+#ifdef ENABLE_VERIFIER
+ if (opt_verify) {
+ if (argcount > 255) {
+ exceptions_throw_classformaterror(c, "Too many arguments in signature");
+ return false;
+ }
-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; /* super class */
- classinfo *tc; /* temporary class variable */
- vftbl_t *v; /* vftbl of current class */
- s4 i; /* interface/method/field counter */
- arraydescriptor *arraydesc; /* descriptor for array classes */
-
- /* maybe the class is already linked */
- if (c->linked)
- return c;
+ /* check flag consistency */
+ if (m->name != utf_clinit) {
+ i = (m->flags & (ACC_PUBLIC | ACC_PRIVATE | ACC_PROTECTED));
- /* maybe the class is not loaded */
- if (!c->loaded)
- if (!class_load(c))
- return NULL;
+ if (i != 0 && i != ACC_PUBLIC && i != ACC_PRIVATE && i != ACC_PROTECTED) {
+ exceptions_throw_classformaterror(c,
+ "Illegal method modifiers: 0x%X",
+ m->flags);
+ return false;
+ }
- if (linkverbose)
- log_message_class("Linking class: ", c);
+ if (m->flags & ACC_ABSTRACT) {
+ if ((m->flags & (ACC_FINAL | ACC_NATIVE | ACC_PRIVATE |
+ ACC_STATIC | ACC_STRICT | ACC_SYNCHRONIZED))) {
+ exceptions_throw_classformaterror(c,
+ "Illegal method modifiers: 0x%X",
+ m->flags);
+ return false;
+ }
+ }
- /* ok, this class is somewhat linked */
- c->linked = true;
+ if (c->flags & ACC_INTERFACE) {
+ if ((m->flags & (ACC_ABSTRACT | ACC_PUBLIC)) != (ACC_ABSTRACT | ACC_PUBLIC)) {
+ exceptions_throw_classformaterror(c,
+ "Illegal method modifiers: 0x%X",
+ m->flags);
+ return false;
+ }
+ }
- arraydesc = NULL;
+ if (m->name == utf_init) {
+ if (m->flags & (ACC_STATIC | ACC_FINAL | ACC_SYNCHRONIZED |
+ ACC_NATIVE | ACC_ABSTRACT)) {
+ exceptions_throw_classformaterror(c, "Instance initialization method has invalid flags set");
+ return false;
+ }
+ }
+ }
+ }
+#endif /* ENABLE_VERIFIER */
+
+ 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;
- /* check interfaces */
+ m->xta = NULL;
- for (i = 0; i < c->interfacescount; i++) {
- tc = c->interfaces[i];
+ if (!suck_check_classbuffer_size(cb, 2))
+ return false;
+
+ attrnum = suck_u2(cb);
+ for (i = 0; i < attrnum; i++) {
+ utf *aname;
- /* detect circularity */
- if (tc == c) {
- *exceptionptr =
- new_exception_utfmessage(string_java_lang_ClassCircularityError,
- c->name);
- return NULL;
- }
+ if (!suck_check_classbuffer_size(cb, 2))
+ return false;
- if (!tc->loaded)
- if (!class_load(tc))
- return NULL;
+ if (!(aname = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
- if (!(tc->flags & ACC_INTERFACE)) {
- *exceptionptr =
- new_exception_message(string_java_lang_IncompatibleClassChangeError,
- "Implementing class");
- return NULL;
- }
+ if (aname == utf_Code) {
+ if (m->flags & (ACC_ABSTRACT | ACC_NATIVE)) {
+ exceptions_throw_classformaterror(c, "Code attribute in native or abstract methods");
+ return false;
+ }
+
+ if (m->jcode) {
+ exceptions_throw_classformaterror(c, "Multiple Code attributes");
+ return false;
+ }
- if (!tc->linked)
- if (!class_link(tc))
- return NULL;
- }
-
- /* check super class */
+ if (!suck_check_classbuffer_size(cb, 4 + 2 + 2))
+ return false;
- super = c->super;
+ suck_u4(cb);
+ m->maxstack = suck_u2(cb);
+ m->maxlocals = suck_u2(cb);
- if (super == NULL) { /* class java.lang.Object */
- c->index = 0;
- c->classUsed = USED; /* Object class is always used CO-RT*/
- c->impldBy = NULL;
- c->instancesize = sizeof(java_objectheader);
-
- vftbllength = supervftbllength = 0;
+ if (m->maxlocals < argcount) {
+ exceptions_throw_classformaterror(c, "Arguments can't fit into locals");
+ return false;
+ }
+
+ if (!suck_check_classbuffer_size(cb, 4))
+ return false;
- c->finalizer = NULL;
+ m->jcodelength = suck_u4(cb);
- } else {
- /* detect circularity */
- if (super == c) {
- *exceptionptr =
- new_exception_utfmessage(string_java_lang_ClassCircularityError,
- c->name);
- return NULL;
- }
+ if (m->jcodelength == 0) {
+ exceptions_throw_classformaterror(c, "Code of a method has length 0");
+ return false;
+ }
+
+ if (m->jcodelength > 65535) {
+ exceptions_throw_classformaterror(c, "Code of a method longer than 65535 bytes");
+ return false;
+ }
- if (!super->loaded)
- if (!class_load(super))
- return NULL;
+ if (!suck_check_classbuffer_size(cb, m->jcodelength))
+ return false;
- if (super->flags & ACC_INTERFACE) {
- /* java.lang.IncompatibleClassChangeError: class a has interface java.lang.Cloneable as super class */
- panic("Interface specified as super class");
- }
+ m->jcode = MNEW(u1, m->jcodelength);
+ suck_nbytes(m->jcode, cb, m->jcodelength);
- /* 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;
+ if (!suck_check_classbuffer_size(cb, 2))
+ return false;
- /* handle array classes */
- if (c->name->text[0] == '[')
- if (!(arraydesc = class_link_array(c)))
- return NULL;
-
- if (c->flags & ACC_INTERFACE)
- c->index = interfaceindex++;
- else
- c->index = super->index + 1;
-
- c->instancesize = super->instancesize;
-
- vftbllength = supervftbllength = super->vftbl->vftbllength;
-
- c->finalizer = super->finalizer;
- }
+ m->exceptiontablelength = suck_u2(cb);
+ if (!suck_check_classbuffer_size(cb, (2 + 2 + 2 + 2) * m->exceptiontablelength))
+ return false;
- /* compute vftbl length */
+ m->exceptiontable = MNEW(exceptiontable, m->exceptiontablelength);
- for (i = 0; i < c->methodscount; i++) {
- methodinfo *m = &(c->methods[i]);
-
- if (!(m->flags & ACC_STATIC)) { /* is instance method */
- 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;
- }
- }
- tc = tc->super;
+#if defined(ENABLE_STATISTICS)
+ if (opt_stat) {
+ count_vmcode_len += m->jcodelength + 18;
+ count_extable_len +=
+ m->exceptiontablelength * sizeof(exceptiontable);
}
- notfoundvftblindex:
- m->vftblindex = (vftbllength++);
- foundvftblindex:
- ;
- }
- }
-
-#if defined(STATISTICS)
- if (opt_stat)
- count_vftbl_len +=
- sizeof(vftbl_t) + (sizeof(methodptr) * (vftbllength - 1));
#endif
- /* compute interfacetable length */
-
- interfacetablelength = 0;
- tc = c;
- while (tc) {
- for (i = 0; i < tc->interfacescount; i++) {
- s4 h = class_highestinterface(tc->interfaces[i]) + 1;
- if (h > interfacetablelength)
- interfacetablelength = h;
- }
- tc = tc->super;
- }
+ for (j = 0; j < m->exceptiontablelength; j++) {
+ u4 idx;
+ m->exceptiontable[j].startpc = suck_u2(cb);
+ m->exceptiontable[j].endpc = suck_u2(cb);
+ m->exceptiontable[j].handlerpc = suck_u2(cb);
- /* allocate virtual function table */
+ idx = suck_u2(cb);
+ if (!idx) {
+ m->exceptiontable[j].catchtype.any = NULL;
- v = (vftbl_t*) mem_alloc(sizeof(vftbl_t) + sizeof(methodptr) *
- (vftbllength - 1) + sizeof(methodptr*) *
- (interfacetablelength - (interfacetablelength > 0)));
- v = (vftbl_t*) (((methodptr*) v) + (interfacetablelength - 1) *
- (interfacetablelength > 1));
- c->header.vftbl = c->vftbl = v;
- v->class = c;
- v->vftbllength = vftbllength;
- v->interfacetablelength = interfacetablelength;
- v->arraydesc = arraydesc;
+ } else {
+ /* the classref is created later */
+ if (!(m->exceptiontable[j].catchtype.any =
+ (utf*)class_getconstant(c, idx, CONSTANT_Class)))
+ return false;
+ }
+ }
- /* store interface index in vftbl */
- if (c->flags & ACC_INTERFACE)
- v->baseval = -(c->index);
+ if (!suck_check_classbuffer_size(cb, 2))
+ return false;
- /* copy virtual function table of super class */
+ codeattrnum = suck_u2(cb);
- for (i = 0; i < supervftbllength; i++)
- v->table[i] = super->vftbl->table[i];
-
- /* add method stubs into virtual function table */
+ for (; codeattrnum > 0; codeattrnum--) {
+ utf *caname;
- for (i = 0; i < c->methodscount; i++) {
- methodinfo *m = &(c->methods[i]);
- if (!(m->flags & ACC_STATIC)) {
- v->table[m->vftblindex] = m->stubroutine;
- }
- }
+ if (!suck_check_classbuffer_size(cb, 2))
+ return false;
- /* compute instance size and offset of each field */
-
- for (i = 0; i < c->fieldscount; i++) {
- s4 dsize;
- fieldinfo *f = &(c->fields[i]);
-
- if (!(f->flags & ACC_STATIC)) {
- dsize = desc_typesize(f->descriptor);
- c->instancesize = ALIGN(c->instancesize, dsize);
- f->offset = c->instancesize;
- c->instancesize += dsize;
- }
- }
+ if (!(caname = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
- /* initialize interfacetable and interfacevftbllength */
-
- v->interfacevftbllength = MNEW(s4, interfacetablelength);
+ if (caname == utf_LineNumberTable) {
+ u2 lncid;
-#if defined(STATISTICS)
- if (opt_stat)
- count_vftbl_len += (4 + sizeof(s4)) * v->interfacetablelength;
-#endif
+ if (!suck_check_classbuffer_size(cb, 4 + 2))
+ return false;
- for (i = 0; i < interfacetablelength; i++) {
- v->interfacevftbllength[i] = 0;
- v->interfacetable[-i] = NULL;
- }
-
- /* add interfaces */
-
- for (tc = c; tc != NULL; tc = tc->super) {
- for (i = 0; i < tc->interfacescount; i++) {
- class_addinterface(c, tc->interfaces[i]);
- }
- }
+ suck_u4(cb);
+ m->linenumbercount = suck_u2(cb);
- /* add finalizer method (not for java.lang.Object) */
+ if (!suck_check_classbuffer_size(cb,
+ (2 + 2) * m->linenumbercount))
+ return false;
- if (super) {
- methodinfo *fi;
+ 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--;
- fi = class_findmethod(c, utf_finalize, utf_fidesc);
+ if (!skipattributes(cb, codeattrnum))
+ return false;
+
+ break;
- if (fi) {
- if (!(fi->flags & ACC_STATIC)) {
- c->finalizer = fi;
+ } else {
+ if (!skipattributebody(cb))
+ return false;
+ }
}
- }
- }
- /* final tasks */
-
- loader_compute_subclasses(c);
-
- if (linkverbose)
- log_message_class("Linking done class: ", c);
-
- /* just return c to show that we didn't had a problem */
+ } else if (aname == utf_Exceptions) {
+ s4 j;
- return c;
-}
+ if (m->thrownexceptions) {
+ exceptions_throw_classformaterror(c, "Multiple Exceptions attributes");
+ return false;
+ }
+ if (!suck_check_classbuffer_size(cb, 4 + 2))
+ return false;
-/******************* Function: class_freepool **********************************
+ suck_u4(cb); /* length */
+ m->thrownexceptionscount = suck_u2(cb);
- Frees all resources used by this classes Constant Pool.
+ if (!suck_check_classbuffer_size(cb, 2 * m->thrownexceptionscount))
+ return false;
-*******************************************************************************/
+ m->thrownexceptions = MNEW(classref_or_classinfo, m->thrownexceptionscount);
-static void class_freecpool(classinfo *c)
-{
- u4 idx;
- u4 tag;
- voidptr info;
-
- 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;
- }
+ for (j = 0; j < m->thrownexceptionscount; j++) {
+ /* the classref is created later */
+ if (!((m->thrownexceptions)[j].any =
+ (utf*) class_getconstant(c, suck_u2(cb), CONSTANT_Class)))
+ return false;
}
+
+ } else {
+ if (!skipattributebody(cb))
+ return false;
}
}
- if (c->cptags)
- MFREE(c->cptags, u1, c->cpcount);
+ if (!m->jcode && !(m->flags & (ACC_ABSTRACT | ACC_NATIVE))) {
+ exceptions_throw_classformaterror(c, "Missing Code attribute");
+ return false;
+ }
- if (c->cpinfos)
- MFREE(c->cpinfos, voidptr, c->cpcount);
-}
+ /* everything was ok */
+ return true;
+}
-/*********************** Function: class_free **********************************
- Frees all resources used by the class.
+/* load_attribute **************************************************************
+ Read attributes from classfile.
+
*******************************************************************************/
-void class_free(classinfo *c)
+static bool load_attributes(classbuffer *cb, u4 num)
{
- s4 i;
- vftbl_t *v;
-
- class_freecpool(c);
-
- if (c->interfaces)
- MFREE(c->interfaces, classinfo*, c->interfacescount);
-
- if (c->fields) {
- for (i = 0; i < c->fieldscount; i++)
- field_free(&(c->fields[i]));
-/* MFREE(c->fields, fieldinfo, c->fieldscount); */
- }
-
- 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);
-
- i = sizeof(vftbl_t) + sizeof(methodptr) * (v->vftbllength - 1) +
- sizeof(methodptr*) * (v->interfacetablelength -
- (v->interfacetablelength > 0));
- v = (vftbl_t*) (((methodptr*) v) - (v->interfacetablelength - 1) *
- (v->interfacetablelength > 1));
- mem_free(v, i);
- }
-
- if (c->innerclass)
- MFREE(c->innerclass, innerclassinfo, c->innerclasscount);
+ classinfo *c;
+ utf *aname;
+ u4 i, j;
- /* if (c->classvftbl)
- mem_free(c->header.vftbl, sizeof(vftbl) + sizeof(methodptr)*(c->vftbl->vftbllength-1)); */
-
-/* GCFREE(c); */
-}
+ c = cb->class;
+ for (i = 0; i < num; i++) {
+ /* retrieve attribute name */
+ if (!suck_check_classbuffer_size(cb, 2))
+ return false;
-/************************* Function: class_findfield ***************************
-
- Searches a 'classinfo' structure for a field having the given name and
- type.
+ if (!(aname = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
-*******************************************************************************/
+ if (aname == utf_InnerClasses) {
+ /* innerclasses attribute */
+ if (c->innerclass) {
+ exceptions_throw_classformaterror(c, "Multiple InnerClasses attributes");
+ return false;
+ }
+
+ if (!suck_check_classbuffer_size(cb, 4 + 2))
+ return false;
-fieldinfo *class_findfield(classinfo *c, utf *name, utf *desc)
-{
- s4 i;
+ /* skip attribute length */
+ suck_u4(cb);
- for (i = 0; i < c->fieldscount; i++) {
- if ((c->fields[i].name == name) && (c->fields[i].descriptor == desc))
- return &(c->fields[i]);
- }
+ /* number of records */
+ c->innerclasscount = suck_u2(cb);
- panic("Can not find field given in CONSTANT_Fieldref");
+ if (!suck_check_classbuffer_size(cb, (2 + 2 + 2 + 2) * c->innerclasscount))
+ return false;
- /* keep compiler happy */
- return NULL;
-}
+ /* 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;
-/****************** Function: class_resolvefield_int ***************************
+ info->inner_class.ref =
+ innerclass_getconstant(c, suck_u2(cb), CONSTANT_Class);
+ info->outer_class.ref =
+ innerclass_getconstant(c, suck_u2(cb), CONSTANT_Class);
+ info->name =
+ innerclass_getconstant(c, suck_u2(cb), CONSTANT_Utf8);
+ info->flags = suck_u2(cb);
+ }
- This is an internally used helper function. Do not use this directly.
+ } else if (aname == utf_SourceFile) {
+ if (!suck_check_classbuffer_size(cb, 4 + 2))
+ return false;
- Tries to resolve a field having the given name and type.
- If the field cannot be resolved, NULL is returned.
+ if (suck_u4(cb) != 2) {
+ exceptions_throw_classformaterror(c, "Wrong size for VALUE attribute");
+ return false;
+ }
-*******************************************************************************/
+ if (c->sourcefile) {
+ exceptions_throw_classformaterror(c, "Multiple SourceFile attributes");
+ return false;
+ }
-static fieldinfo *class_resolvefield_int(classinfo *c, utf *name, utf *desc)
-{
- s4 i;
- fieldinfo *fi;
+ if (!(c->sourcefile = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
- /* 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]);
+ } else {
+ /* unknown attribute */
+ if (!skipattributebody(cb))
+ return false;
}
- }
-
- /* 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;
+ return true;
}
-/********************* Function: class_resolvefield ***************************
-
- Resolves a reference from REFERER to a field with NAME and DESC in class C.
+/* load_class_from_sysloader ***************************************************
- If the field cannot be resolved the return value is NULL. If EXCEPT is
- true *exceptionptr is set, too.
+ Load the class with the given name using the system class loader
+
+ IN:
+ name.............the classname
+
+ RETURN VALUE:
+ the loaded class, or
+ NULL if an exception has been thrown
*******************************************************************************/
-fieldinfo *class_resolvefield(classinfo *c, utf *name, utf *desc,
- classinfo *referer, bool except)
+classinfo *load_class_from_sysloader(utf *name)
{
- fieldinfo *fi;
+ methodinfo *m;
+ java_objectheader *cl;
+ classinfo *c;
- /* XXX resolve class c */
- /* XXX check access from REFERER to C */
+ LOADER_ASSERT(class_java_lang_Object);
+ LOADER_ASSERT(class_java_lang_ClassLoader);
+ LOADER_ASSERT(class_java_lang_ClassLoader->state & CLASS_LINKED);
- fi = class_resolvefield_int(c, name, desc);
+ m = class_resolveclassmethod(class_java_lang_ClassLoader,
+ utf_getSystemClassLoader,
+ utf_void__java_lang_ClassLoader,
+ class_java_lang_Object,
+ false);
- if (!fi) {
- if (except)
- *exceptionptr =
- new_exception_utfmessage(string_java_lang_NoSuchFieldError,
- name);
+ if (!m)
+ return false;
- return NULL;
- }
+ ASM_CALLJAVAFUNCTION_ADR(cl, m, NULL, NULL, NULL, NULL);
+
+ if (!cl)
+ return false;
- /* XXX check access rights */
+ c = load_class_from_classloader(name, cl);
- return fi;
+ return c;
}
-/************************* Function: class_findmethod **************************
-
- Searches a 'classinfo' structure for a method having the given name and
- type and returns the index in the class info structure.
- If type is NULL, it is ignored.
+/* load_class_from_classloader *************************************************
+
+ Load the class with the given name using the given user-defined class loader.
+
+ IN:
+ name.............the classname
+ cl...............user-defined class loader
+
+ RETURN VALUE:
+ the loaded class, or
+ NULL if an exception has been thrown
*******************************************************************************/
-s4 class_findmethodIndex(classinfo *c, utf *name, utf *desc)
+classinfo *load_class_from_classloader(utf *name, java_objectheader *cl)
{
- s4 i;
+ java_objectheader *o;
+ classinfo *c;
+ classinfo *tmpc;
- for (i = 0; i < c->methodscount; i++) {
-
-/* utf_display_classname(c->name);printf("."); */
-/* utf_display(c->methods[i].name);printf("."); */
-/* utf_display(c->methods[i].descriptor); */
-/* printf("\n"); */
+ LOADER_ASSERT(name);
- if ((c->methods[i].name == name) && ((desc == NULL) ||
- (c->methods[i].descriptor == desc))) {
- return i;
- }
- }
+ /* lookup if this class has already been loaded */
- return -1;
-}
+ c = classcache_lookup(cl, name);
+ if (c)
+ return c;
-/************************* Function: class_findmethod **************************
-
- Searches a 'classinfo' structure for a method having the given name and
- type.
- If type is NULL, it is ignored.
+ /* if other class loader than bootstrap, call it */
-*******************************************************************************/
+ if (cl) {
+ methodinfo *lc;
+ char *text;
+ s4 namelen;
-methodinfo *class_findmethod(classinfo *c, utf *name, utf *desc)
-{
- s4 idx = class_findmethodIndex(c, name, desc);
+ text = name->text;
+ namelen = name->blength;
- if (idx == -1)
- return NULL;
+ /* handle array classes */
+ if (text[0] == '[') {
+ classinfo *comp;
+ utf *u;
+
+ switch (text[1]) {
+ case 'L':
+ /* check for cases like `[L;' or `[L[I;' or `[Ljava.lang.Object' */
+ if (namelen < 4 || text[2] == '[' || text[namelen - 1] != ';') {
+ *exceptionptr = new_noclassdeffounderror(name);
+ return false;
+ }
- return &(c->methods[idx]);
-}
+ u = utf_new(text + 2, namelen - 3);
+ if (!(comp = load_class_from_classloader(u, cl)))
+ return false;
-/*********************** Function: class_fetchmethod **************************
-
- like class_findmethod, but aborts with an error if the method is not found
+ /* create the array class */
-*******************************************************************************/
+ c = class_array_of(comp, false);
-methodinfo *class_fetchmethod(classinfo *c, utf *name, utf *desc)
-{
- methodinfo *mi;
+ tmpc = classcache_store(cl, c, true);
- mi = class_findmethod(c, name, desc);
+ if (tmpc == NULL) {
+ /* exception, free the loaded class */
+ c->state &= ~CLASS_LOADING;
+ class_free(c);
+ }
- 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 tmpc;
- return mi;
-}
+ case '[':
+ /* load the component class */
+ u = utf_new(text + 1, namelen - 1);
-/*********************** Function: class_findmethod_w**************************
+ if (!(comp = load_class_from_classloader(u, cl)))
+ return false;
- like class_findmethod, but logs a warning if the method is not found
+ /* create the array class */
-*******************************************************************************/
+ c = class_array_of(comp, false);
-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;
-}
+ tmpc = classcache_store(cl, c, true);
+ if (tmpc == NULL) {
+ /* exception, free the loaded class */
+ c->state &= ~CLASS_LOADING;
+ class_free(c);
+ }
-/************************* Function: class_findmethod_approx ******************
-
- like class_findmethod but ignores the return value when comparing the
- descriptor.
+ return tmpc;
-*******************************************************************************/
+ default:
+ /* primitive array classes are loaded by the bootstrap loader */
-methodinfo *class_findmethod_approx(classinfo *c, utf *name, utf *desc)
-{
- s4 i;
+ c = load_class_bootstrap(name);
- 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]);
-
- 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 c;
}
}
- }
+
+ LOADER_ASSERT(class_java_lang_Object);
- return NULL;
-}
+ lc = class_resolveclassmethod(cl->vftbl->class,
+ utf_loadClass,
+ utf_java_lang_String__java_lang_Class,
+ class_java_lang_Object,
+ true);
+ if (!lc)
+ return false; /* exception */
-/***************** Function: class_resolvemethod_approx ***********************
-
- Searches a class and every super class for a method (without paying
- attention to the return value)
+ /* move return value into `o' and cast it afterwards to a classinfo* */
-*******************************************************************************/
+ ASM_CALLJAVAFUNCTION_ADR(o, lc, cl,
+ javastring_new_slash_to_dot(name),
+ NULL, NULL);
-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;
- }
+ c = (classinfo *) o;
- return NULL;
-}
+ if (c) {
+ /* Store this class in the loaded class cache. If another
+ class with the same (initloader,name) pair has been
+ stored earlier it will be returned by classcache_store
+ In this case classcache_store may not free the class
+ because it has already been exposed to Java code which
+ may have kept references to that class. */
+ tmpc = classcache_store(cl, c, false);
-/************************* Function: class_resolvemethod ***********************
-
- Searches a class and every super class for a method.
+ if (tmpc == NULL) {
+ /* exception, free the loaded class */
+ c->state &= ~CLASS_LOADING;
+ class_free(c);
+ }
-*******************************************************************************/
+ c = tmpc;
-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:");*/
+ } else {
+ /* loadClass has thrown an exception */
+ /* we must convert ClassNotFoundException into NoClassDefFoundException */
+ /* XXX maybe we should have a flag that avoids this conversion */
+ /* for calling load_class_from_classloader from Class.forName */
+ /* Currently we do a double conversion in these cases */
+ classnotfoundexception_to_noclassdeffounderror();
+ }
- return NULL;
-}
+ /* SUN compatible -verbose:class output */
+ if (opt_verboseclass && (c != NULL) && (c->classloader == cl)) {
+ printf("[Loaded ");
+ utf_display_classname(name);
+ printf("]\n");
+ }
-/****************** Function: class_resolveinterfacemethod_int ****************
+ return c;
+ }
- Internally used helper function. Do not use this directly.
+ c = load_class_bootstrap(name);
-*******************************************************************************/
+ return c;
+}
-static
-methodinfo *class_resolveinterfacemethod_int(classinfo *c, utf *name, utf *desc)
-{
- methodinfo *mi;
- int i;
-
- 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;
- }
+
+/* load_class_bootstrap ********************************************************
- return NULL;
-}
+ Load the class with the given name using the bootstrap class loader.
-/******************** Function: class_resolveinterfacemethod ******************
+ IN:
+ name.............the classname
- Resolves a reference from REFERER to a method with NAME and DESC in
- interface C.
+ RETURN VALUE:
+ loaded classinfo, or
+ NULL if an exception has been thrown
- If the method cannot be resolved the return value is NULL. If EXCEPT is
- true *exceptionptr is set, too.
+ SYNCHRONIZATION:
+ load_class_bootstrap is synchronized. It can be treated as an
+ atomic operation.
*******************************************************************************/
-methodinfo *class_resolveinterfacemethod(classinfo *c, utf *name, utf *desc,
- classinfo *referer, bool except)
+classinfo *load_class_bootstrap(utf *name)
{
- methodinfo *mi;
+ classbuffer *cb;
+ classinfo *c;
+ classinfo *r;
+
+ /* for debugging */
- /* XXX resolve class c */
- /* XXX check access from REFERER to C */
+ LOADER_ASSERT(name);
+
+ /* lookup if this class has already been loaded */
+
+ if ((r = classcache_lookup(NULL, name)))
+ return r;
+
+ /* create the classinfo */
+
+ c = class_create_classinfo(name);
- if (!(c->flags & ACC_INTERFACE)) {
- if (except)
- *exceptionptr =
- new_exception(string_java_lang_IncompatibleClassChangeError);
+ /* handle array classes */
- return NULL;
+ if (name->text[0] == '[') {
+ c = load_newly_created_array(c, NULL);
+ if (c == NULL)
+ return NULL;
+ LOADER_ASSERT(c->state & CLASS_LOADED);
+ return c;
}
- mi = class_resolveinterfacemethod_int(c, name, desc);
+#if defined(ENABLE_STATISTICS)
+ /* measure time */
- if (mi)
- return mi;
+ if (getcompilingtime)
+ compilingtime_stop();
- /* try class java.lang.Object */
- mi = class_findmethod(class_java_lang_Object, name, desc);
+ if (getloadingtime)
+ loadingtime_start();
+#endif
- if (mi)
- return mi;
+ /* load classdata, throw exception on error */
- if (except)
- *exceptionptr =
- new_exception_utfmessage(string_java_lang_NoSuchMethodError, name);
+ if ((cb = suck_start(c)) == NULL) {
+ /* this normally means, the classpath was not set properly */
- return NULL;
-}
+ if (name == utf_java_lang_Object)
+ throw_cacao_exception_exit(string_java_lang_NoClassDefFoundError,
+ "java/lang/Object");
+ *exceptionptr = new_noclassdeffounderror(name);
-/********************* Function: class_resolveclassmethod *********************
+ return NULL;
+ }
- Resolves a reference from REFERER to a method with NAME and DESC in
- class C.
+ /* load the class from the buffer */
- If the method cannot be resolved the return value is NULL. If EXCEPT is
- true *exceptionptr is set, too.
+ r = load_class_from_classbuffer(cb);
-*******************************************************************************/
+ if (!r) {
+ /* the class could not be loaded, free the classinfo struct */
-methodinfo *class_resolveclassmethod(classinfo *c, utf *name, utf *desc,
- classinfo *referer, bool except)
-{
- classinfo *cls;
- methodinfo *mi;
- s4 i;
- char msg[MAXLOGTEXT];
+ class_free(c);
- /* 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;
+ } else {
+ /* Store this class in the loaded class cache this step also
+ checks the loading constraints. If the class has been loaded
+ before, the earlier loaded class is returned. */
+
+ classinfo *res = classcache_store(NULL, c, true);
+
+ if (!res) {
+ /* exception */
+ class_free(c);
+ }
+
+ r = res;
}
-
- 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);
+ /* SUN compatible -verbose:class output */
+
+ if (opt_verboseclass && r) {
+ printf("[Loaded ");
+ utf_display_classname(name);
+ printf(" from %s]\n", cb->path);
}
- return NULL;
+ /* free memory */
+
+ suck_stop(cb);
- found:
- if ((mi->flags & ACC_ABSTRACT) && !(c->flags & ACC_ABSTRACT)) {
- if (except)
- *exceptionptr = new_exception(string_java_lang_AbstractMethodError);
+#if defined(ENABLE_STATISTICS)
+ /* measure time */
- return NULL;
- }
+ if (getloadingtime)
+ loadingtime_stop();
- /* XXX check access rights */
+ if (getcompilingtime)
+ compilingtime_start();
+#endif
- return mi;
+ return r;
}
-/************************* Function: class_issubclass **************************
+/* load_class_from_classbuffer *************************************************
+
+ Loads everything interesting about a class from the class file. The
+ 'classinfo' structure must have been allocated previously.
+
+ The super class and the interfaces implemented by this class need
+ not be loaded. The link is set later by the function 'class_link'.
- Checks if sub is a descendant of super.
+ The loaded class is removed from the list 'unloadedclasses' and
+ added to the list 'unlinkedclasses'.
+ SYNCHRONIZATION:
+ This function is NOT synchronized!
+
*******************************************************************************/
-bool class_issubclass(classinfo *sub, classinfo *super)
+classinfo *load_class_from_classbuffer(classbuffer *cb)
{
- for (;;) {
- if (!sub) return false;
- if (sub == super) return true;
- sub = sub->super;
- }
-}
+ classinfo *c;
+ utf *name;
+ utf *supername;
+ u4 i,j;
+ u4 ma, mi;
+ s4 dumpsize;
+ descriptor_pool *descpool;
+#if defined(ENABLE_STATISTICS)
+ u4 classrefsize;
+ u4 descsize;
+#endif
+
+ /* get the classbuffer's class */
+ c = cb->class;
-/****************** Initialization function for classes ******************
+ /* the class is already loaded */
- In Java, every class can have a static initialization function. This
- function has to be called BEFORE calling other methods or accessing static
- variables.
+ if (c->state & CLASS_LOADED)
+ return c;
-*******************************************************************************/
+#if defined(ENABLE_STATISTICS)
+ if (opt_stat)
+ count_class_loads++;
+#endif
-static classinfo *class_init_intern(classinfo *c);
+#if !defined(NDEBUG)
+ /* output for debugging purposes */
-classinfo *class_init(classinfo *c)
-{
- classinfo *r;
+ if (loadverbose)
+ log_message_class("Loading class: ", c);
+#endif
+
+ /* mark start of dump memory area */
- if (!makeinitializations)
- return c;
+ dumpsize = dump_size();
- /* enter a monitor on the class */
+ /* class is currently loading */
- builtin_monitorenter((java_objectheader *) c);
+ c->state |= CLASS_LOADING;
- /* maybe the class is already initalized or the current thread, which can
- pass the monitor, is currently initalizing this class */
+ if (!suck_check_classbuffer_size(cb, 4 + 2 + 2))
+ goto return_exception;
- /* JOWENN: In future we need an additinal flag: initializationfailed,
- since further access to the class should cause a NoClassDefFound,
- if the static initializer failed once
- */
+ /* check signature */
- if (c->initialized || c->initializing) {
- builtin_monitorexit((java_objectheader *) c);
+ if (suck_u4(cb) != MAGIC) {
+ exceptions_throw_classformaterror(c, "Bad magic number");
- return c;
+ goto return_exception;
}
- /* this initalizing run begins NOW */
- c->initializing = true;
+ /* check version */
- /* call the internal function */
- r = class_init_intern(c);
+ mi = suck_u2(cb);
+ ma = suck_u2(cb);
- /* if return value is not NULL everything was ok and the class is
- initialized */
- if (r)
- c->initialized = true;
+ if (!(ma < MAJOR_VERSION || (ma == MAJOR_VERSION && mi <= MINOR_VERSION))) {
+ *exceptionptr =
+ new_unsupportedclassversionerror(c,
+ "Unsupported major.minor version %d.%d",
+ ma, mi);
- /* this initalizing run is done */
- c->initializing = false;
+ goto return_exception;
+ }
- /* leave the monitor */
+ /* create a new descriptor pool */
- builtin_monitorexit((java_objectheader *) c);
+ descpool = descriptor_pool_new(c);
- return r;
-}
+ /* load the constant pool */
+ if (!load_constantpool(cb, descpool))
+ goto return_exception;
-/* this function MUST NOT be called directly, because of thread <clinit>
- race conditions */
+ c->classUsed = NOTUSED; /* not used initially CO-RT */
+ c->impldBy = NULL;
-static classinfo *class_init_intern(classinfo *c)
-{
- methodinfo *m;
- s4 i;
-#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
- int b;
-#endif
+ /* ACC flags */
- /* maybe the class is not already loaded */
- if (!c->loaded)
- if (!class_load(c))
- return NULL;
+ if (!suck_check_classbuffer_size(cb, 2))
+ goto return_exception;
- /* maybe the class is not already linked */
- if (!c->linked)
- if (!class_link(c))
- return NULL;
+ c->flags = suck_u2(cb);
-#if defined(STATISTICS)
- if (opt_stat)
- count_class_inits++;
-#endif
+ /* check ACC flags consistency */
- /* 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 (c->flags & ACC_INTERFACE) {
+ if (!(c->flags & ACC_ABSTRACT)) {
+ /* We work around this because interfaces in JDK 1.1 are
+ * not declared abstract. */
- if (!class_init(c->super))
- return NULL;
+ c->flags |= ACC_ABSTRACT;
}
- }
-
- /* 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;
+ if (c->flags & ACC_FINAL) {
+ exceptions_throw_classformaterror(c,
+ "Illegal class modifiers: 0x%X",
+ c->flags);
+ goto return_exception;
}
- }
- 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);
+ if (c->flags & ACC_SUPER) {
+ c->flags &= ~ACC_SUPER; /* kjc seems to set this on interfaces */
}
-
- 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!"); */
-
- if (initverbose)
- log_message_class("Starting static class initializer for class: ", c);
+ if ((c->flags & (ACC_ABSTRACT | ACC_FINAL)) == (ACC_ABSTRACT | ACC_FINAL)) {
+ exceptions_throw_classformaterror(c,
+ "Illegal class modifiers: 0x%X",
+ c->flags);
+ goto return_exception;
+ }
-#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
- b = blockInts;
- blockInts = 0;
-#endif
+ if (!suck_check_classbuffer_size(cb, 2 + 2))
+ goto return_exception;
- /* now call the initializer */
- asm_calljavafunction(m, NULL, NULL, NULL, NULL);
+ /* this class */
-#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
- assert(blockInts == 0);
- blockInts = b;
-#endif
+ i = suck_u2(cb);
+ if (!(name = (utf *) class_getconstant(c, i, CONSTANT_Class)))
+ goto return_exception;
- /* we have an exception or error */
- if (*exceptionptr) {
- /* class is NOT initialized */
- c->initialized = false;
+ if (c->name == utf_not_named_yet) {
+ /* we finally have a name for this class */
+ c->name = name;
+ class_set_packagename(c);
- /* is this an exception, than wrap it */
- if (builtin_instanceof(*exceptionptr, class_java_lang_Exception)) {
- java_objectheader *xptr;
- java_objectheader *cause;
+ } else if (name != c->name) {
+ char *msg;
+ s4 msglen;
- /* get the cause */
- cause = *exceptionptr;
+ msglen = utf_strlen(c->name) + strlen(" (wrong name: ") +
+ utf_strlen(name) + strlen(")") + strlen("0");
- /* clear exception, because we are calling jit code again */
- *exceptionptr = NULL;
+ msg = MNEW(char, msglen);
- /* wrap the exception */
- xptr =
- new_exception_throwable(string_java_lang_ExceptionInInitializerError,
- (java_lang_Throwable *) cause);
+ utf_sprint(msg, c->name);
+ strcat(msg, " (wrong name: ");
+ utf_strcat(msg, name);
+ strcat(msg, ")");
- /* XXX should we exit here? */
- if (*exceptionptr)
- throw_exception();
+ *exceptionptr =
+ new_exception_message(string_java_lang_NoClassDefFoundError, msg);
- /* set new exception */
- *exceptionptr = xptr;
- }
+ MFREE(msg, char, msglen);
- return NULL;
+ goto return_exception;
}
+
+ /* retrieve superclass */
- if (initverbose)
- log_message_class("Finished static class initializer for class: ", c);
-
- return c;
-}
+ c->super.any = NULL;
+ if ((i = suck_u2(cb))) {
+ if (!(supername = (utf *) class_getconstant(c, i, CONSTANT_Class)))
+ goto return_exception;
+ /* java.lang.Object may not have a super class. */
-/********* Function: find_class_method_constant *********/
+ if (c->name == utf_java_lang_Object) {
+ *exceptionptr =
+ new_exception_message(string_java_lang_ClassFormatError,
+ "java.lang.Object with superclass");
-int find_class_method_constant (classinfo *c, utf * c1, utf* m1, utf* d1)
-{
- u4 i;
- voidptr e;
+ goto return_exception;
+ }
- for (i=0; i<c->cpcount; i++) {
-
- e = c -> cpinfos [i];
- if (e) {
-
- switch (c -> cptags [i]) {
- case CONSTANT_Methodref:
- {
- constant_FMIref *fmi = e;
- if ( (fmi->class->name == c1)
- && (fmi->name == m1)
- && (fmi->descriptor == d1)) {
-
- return i;
- }
- }
- break;
+ /* Interfaces must have java.lang.Object as super class. */
- case CONSTANT_InterfaceMethodref:
- {
- constant_FMIref *fmi = e;
- if ( (fmi->class->name == c1)
- && (fmi->name == m1)
- && (fmi->descriptor == d1)) {
+ if ((c->flags & ACC_INTERFACE) &&
+ supername != utf_java_lang_Object) {
+ *exceptionptr =
+ new_exception_message(string_java_lang_ClassFormatError,
+ "Interfaces must have java.lang.Object as superclass");
- return i;
- }
- }
- break;
- }
+ goto return_exception;
}
- }
-
- return -1;
-}
+ } else {
+ supername = NULL;
-void class_showconstanti(classinfo *c, int ii)
-{
- u4 i = ii;
- voidptr e;
-
- e = c->cpinfos [i];
- printf ("#%d: ", (int) i);
- if (e) {
- switch (c->cptags [i]) {
- case CONSTANT_Class:
- printf("Classreference -> ");
- utf_display(((classinfo*)e)->name);
- break;
-
- case CONSTANT_Fieldref:
- printf("Fieldref -> "); goto displayFMIi;
- case CONSTANT_Methodref:
- printf("Methodref -> "); goto displayFMIi;
- case CONSTANT_InterfaceMethodref:
- printf("InterfaceMethod -> "); goto displayFMIi;
- displayFMIi:
- {
- constant_FMIref *fmi = e;
- utf_display(fmi->class->name);
- printf(".");
- utf_display(fmi->name);
- printf(" ");
- utf_display(fmi->descriptor);
- }
- break;
+ /* This is only allowed for java.lang.Object. */
- case CONSTANT_String:
- printf("String -> ");
- utf_display(e);
- break;
- case CONSTANT_Integer:
- printf("Integer -> %d", (int) (((constant_integer*)e)->value));
- break;
- case CONSTANT_Float:
- printf("Float -> %f", ((constant_float*)e)->value);
- break;
- case CONSTANT_Double:
- printf("Double -> %f", ((constant_double*)e)->value);
- break;
- case CONSTANT_Long:
- {
- u8 v = ((constant_long*)e)->value;
-#if U8_AVAILABLE
- printf("Long -> %ld", (long int) v);
-#else
- printf("Long -> HI: %ld, LO: %ld\n",
- (long int) v.high, (long int) v.low);
-#endif
- }
- break;
- case CONSTANT_NameAndType:
- {
- constant_nameandtype *cnt = e;
- printf("NameAndType: ");
- utf_display(cnt->name);
- printf(" ");
- utf_display(cnt->descriptor);
- }
- break;
- case CONSTANT_Utf8:
- printf("Utf8 -> ");
- utf_display(e);
- break;
- default:
- panic("Invalid type of ConstantPool-Entry");
+ if (c->name != utf_java_lang_Object) {
+ exceptions_throw_classformaterror(c, "Bad superclass index");
+ goto return_exception;
}
}
- printf("\n");
-}
+
+ /* retrieve interfaces */
+ if (!suck_check_classbuffer_size(cb, 2))
+ goto return_exception;
-void class_showconstantpool (classinfo *c)
-{
- u4 i;
- voidptr e;
+ c->interfacescount = suck_u2(cb);
- printf ("---- dump of constant pool ----\n");
+ if (!suck_check_classbuffer_size(cb, 2 * c->interfacescount))
+ goto return_exception;
- for (i=0; i<c->cpcount; i++) {
- printf ("#%d: ", (int) i);
-
- e = c -> cpinfos [i];
- if (e) {
-
- switch (c -> cptags [i]) {
- case CONSTANT_Class:
- printf ("Classreference -> ");
- utf_display ( ((classinfo*)e) -> name );
- break;
-
- case CONSTANT_Fieldref:
- printf ("Fieldref -> "); goto displayFMI;
- case CONSTANT_Methodref:
- printf ("Methodref -> "); goto displayFMI;
- case CONSTANT_InterfaceMethodref:
- printf ("InterfaceMethod -> "); goto displayFMI;
- displayFMI:
- {
- constant_FMIref *fmi = e;
- utf_display ( fmi->class->name );
- printf (".");
- utf_display ( fmi->name);
- printf (" ");
- utf_display ( fmi->descriptor );
- }
- break;
+ c->interfaces = MNEW(classref_or_classinfo, c->interfacescount);
+ for (i = 0; i < c->interfacescount; i++) {
+ /* the classrefs are created later */
+ if (!(c->interfaces[i].any = (utf *) class_getconstant(c, suck_u2(cb), CONSTANT_Class)))
+ goto return_exception;
+ }
- case CONSTANT_String:
- printf ("String -> ");
- utf_display (e);
- break;
- case CONSTANT_Integer:
- printf ("Integer -> %d", (int) ( ((constant_integer*)e) -> value) );
- break;
- case CONSTANT_Float:
- printf ("Float -> %f", ((constant_float*)e) -> value);
- break;
- case CONSTANT_Double:
- printf ("Double -> %f", ((constant_double*)e) -> value);
- break;
- case CONSTANT_Long:
- {
- u8 v = ((constant_long*)e) -> value;
-#if U8_AVAILABLE
- printf ("Long -> %ld", (long int) v);
-#else
- printf ("Long -> HI: %ld, LO: %ld\n",
- (long int) v.high, (long int) v.low);
-#endif
- }
- break;
- case CONSTANT_NameAndType:
- {
- constant_nameandtype *cnt = e;
- printf ("NameAndType: ");
- utf_display (cnt->name);
- printf (" ");
- utf_display (cnt->descriptor);
- }
- break;
- case CONSTANT_Utf8:
- printf ("Utf8 -> ");
- utf_display (e);
- break;
- default:
- panic ("Invalid type of ConstantPool-Entry");
- }
- }
+ /* load fields */
+ if (!suck_check_classbuffer_size(cb, 2))
+ goto return_exception;
- printf ("\n");
+ c->fieldscount = suck_u2(cb);
+ c->fields = GCNEW_UNCOLLECTABLE(fieldinfo, c->fieldscount);
+/* c->fields = MNEW(fieldinfo, c->fieldscount); */
+ for (i = 0; i < c->fieldscount; i++) {
+ if (!load_field(cb, &(c->fields[i]),descpool))
+ goto return_exception;
}
-}
-
+ /* load methods */
+ if (!suck_check_classbuffer_size(cb, 2))
+ goto return_exception;
-/********** Function: class_showmethods (debugging only) *************/
+ 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 (!load_method(cb, &(c->methods[i]),descpool))
+ goto return_exception;
+ }
-void class_showmethods (classinfo *c)
-{
- s4 i;
-
- printf ("--------- Fields and Methods ----------------\n");
- printf ("Flags: "); printflags (c->flags); printf ("\n");
+ /* create the class reference table */
- printf ("This: "); utf_display (c->name); printf ("\n");
- if (c->super) {
- printf ("Super: "); utf_display (c->super->name); printf ("\n");
- }
- printf ("Index: %d\n", c->index);
-
- printf ("interfaces:\n");
- for (i=0; i < c-> interfacescount; i++) {
- printf (" ");
- utf_display (c -> interfaces[i] -> name);
- printf (" (%d)\n", c->interfaces[i] -> index);
- }
+ c->classrefs =
+ descriptor_pool_create_classrefs(descpool, &(c->classrefcount));
- printf ("fields:\n");
- for (i=0; i < c -> fieldscount; i++) {
- field_display (&(c -> fields[i]));
- }
+ /* allocate space for the parsed descriptors */
- printf ("methods:\n");
- for (i=0; i < c -> methodscount; i++) {
- methodinfo *m = &(c->methods[i]);
- if ( !(m->flags & ACC_STATIC))
- printf ("vftblindex: %d ", m->vftblindex);
+ descriptor_pool_alloc_parsed_descriptors(descpool);
+ c->parseddescs =
+ descriptor_pool_get_parsed_descriptors(descpool, &(c->parseddescsize));
- method_display ( m );
+#if defined(ENABLE_STATISTICS)
+ if (opt_stat) {
+ descriptor_pool_get_sizes(descpool, &classrefsize, &descsize);
+ count_classref_len += classrefsize;
+ count_parsed_desc_len += descsize;
+ }
+#endif
+ /* put the classrefs in the constant pool */
+ for (i = 0; i < c->cpcount; i++) {
+ if (c->cptags[i] == CONSTANT_Class) {
+ utf *name = (utf *) c->cpinfos[i];
+ c->cpinfos[i] = descriptor_pool_lookup_classref(descpool, name);
}
+ }
- printf ("Virtual function table:\n");
- for (i=0; i<c->vftbl->vftbllength; i++) {
- printf ("entry: %d, %ld\n", i, (long int) (c->vftbl->table[i]) );
- }
+ /* set the super class reference */
-}
+ if (supername) {
+ c->super.ref = descriptor_pool_lookup_classref(descpool, supername);
+ if (!c->super.ref)
+ goto return_exception;
+ }
+ /* set the super interfaces references */
-/******************************************************************************/
-/******************* General functions for the class loader *******************/
-/******************************************************************************/
+ for (i = 0; i < c->interfacescount; i++) {
+ c->interfaces[i].ref =
+ descriptor_pool_lookup_classref(descpool,
+ (utf *) c->interfaces[i].any);
+ if (!c->interfaces[i].ref)
+ goto return_exception;
+ }
-/**************** function: create_primitive_classes ***************************
+ /* parse field descriptors */
- create classes representing primitive types
+ for (i = 0; i < c->fieldscount; i++) {
+ c->fields[i].parseddesc =
+ descriptor_pool_parse_field_descriptor(descpool,
+ c->fields[i].descriptor);
+ if (!c->fields[i].parseddesc)
+ goto return_exception;
+ }
-*******************************************************************************/
+ /* parse method descriptors */
-static bool create_primitive_classes()
-{
- s4 i;
+ for (i = 0; i < c->methodscount; i++) {
+ methodinfo *m = &c->methods[i];
+ m->parseddesc =
+ descriptor_pool_parse_method_descriptor(descpool, m->descriptor,
+ m->flags, class_get_self_classref(m->class));
+ if (!m->parseddesc)
+ goto return_exception;
- for (i = 0; i < PRIMITIVETYPE_COUNT; i++) {
- /* create primitive class */
- 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 */
- c->loaded = true;
- if (!class_link(c))
- return false;
+ for (j = 0; j < m->exceptiontablelength; j++) {
+ if (!m->exceptiontable[j].catchtype.any)
+ continue;
+ if ((m->exceptiontable[j].catchtype.ref =
+ descriptor_pool_lookup_classref(descpool,
+ (utf *) m->exceptiontable[j].catchtype.any)) == NULL)
+ goto return_exception;
+ }
- primitivetype_table[i].class_primitive = c;
-
- /* create class for wrapping the primitive type */
- 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_intern(utf_new_char(primitivetype_table[i].arrayname));
- primitivetype_table[i].arrayclass = c;
- c->loaded = true;
- if (!c->linked)
- if (!class_link(c))
- return false;
- primitivetype_table[i].arrayvftbl = c->vftbl;
+ for (j = 0; j < m->thrownexceptionscount; j++) {
+ if (!m->thrownexceptions[j].any)
+ continue;
+ if ((m->thrownexceptions[j].ref = descriptor_pool_lookup_classref(descpool,
+ (utf *) m->thrownexceptions[j].any)) == NULL)
+ goto return_exception;
}
}
- return true;
-}
+ /* parse the loaded descriptors */
+
+ for (i = 0; i < c->cpcount; i++) {
+ constant_FMIref *fmi;
+ s4 index;
+
+ switch (c->cptags[i]) {
+ case CONSTANT_Fieldref:
+ fmi = (constant_FMIref *) c->cpinfos[i];
+ fmi->parseddesc.fd =
+ descriptor_pool_parse_field_descriptor(descpool,
+ fmi->descriptor);
+ if (!fmi->parseddesc.fd)
+ goto return_exception;
+ index = (int) (size_t) fmi->classref;
+ fmi->classref =
+ (constant_classref *) class_getconstant(c, index,
+ CONSTANT_Class);
+ if (!fmi->classref)
+ goto return_exception;
+ break;
+ case CONSTANT_Methodref:
+ case CONSTANT_InterfaceMethodref:
+ fmi = (constant_FMIref *) c->cpinfos[i];
+ index = (int) (size_t) fmi->classref;
+ fmi->classref =
+ (constant_classref *) class_getconstant(c, index,
+ CONSTANT_Class);
+ if (!fmi->classref)
+ goto return_exception;
+ fmi->parseddesc.md =
+ descriptor_pool_parse_method_descriptor(descpool,
+ fmi->descriptor,
+ ACC_UNDEF,
+ fmi->classref);
+ if (!fmi->parseddesc.md)
+ goto return_exception;
+ break;
+ }
+ }
+#ifdef ENABLE_VERIFIER
+ /* Check if all fields and methods can be uniquely
+ * identified by (name,descriptor). */
-/**************** function: class_primitive_from_sig ***************************
+ 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;
- return the primitive class indicated by the given signature character
+ /* Allocate hashtable */
+ len = c->methodscount;
+ if (len < c->fieldscount) len = c->fieldscount;
+ hashlen = 5 * len;
+ hashtab = MNEW(u2,(hashlen + len));
+ next = hashtab + hashlen;
- If the descriptor does not indicate a valid primitive type the
- return value is NULL.
+ /* Determine bitshift (to get good hash values) */
+ if (!shift) {
+ len = sizeof(utf);
+ while (len) {
+ len >>= 1;
+ shift++;
+ }
+ }
-********************************************************************************/
+ /* Check fields */
+ memset(hashtab, 0, sizeof(u2) * (hashlen + len));
-classinfo *class_primitive_from_sig(char sig)
-{
- switch (sig) {
- case 'I': return primitivetype_table[PRIMITIVETYPE_INT].class_primitive;
- case 'J': return primitivetype_table[PRIMITIVETYPE_LONG].class_primitive;
- case 'F': return primitivetype_table[PRIMITIVETYPE_FLOAT].class_primitive;
- case 'D': return primitivetype_table[PRIMITIVETYPE_DOUBLE].class_primitive;
- case 'B': return primitivetype_table[PRIMITIVETYPE_BYTE].class_primitive;
- case 'C': return primitivetype_table[PRIMITIVETYPE_CHAR].class_primitive;
- case 'S': return primitivetype_table[PRIMITIVETYPE_SHORT].class_primitive;
- case 'Z': return primitivetype_table[PRIMITIVETYPE_BOOLEAN].class_primitive;
- case 'V': return primitivetype_table[PRIMITIVETYPE_VOID].class_primitive;
- }
- return NULL;
-}
+ for (i = 0; i < c->fieldscount; ++i) {
+ fieldinfo *fi = c->fields + i;
-/****************** function: class_from_descriptor ****************************
+ /* It's ok if we lose bits here */
+ index = ((((size_t) fi->name) +
+ ((size_t) fi->descriptor)) >> shift) % hashlen;
- return the class indicated by the given descriptor
+ if ((old = hashtab[index])) {
+ old--;
+ next[i] = old;
+ do {
+ if (c->fields[old].name == fi->name &&
+ c->fields[old].descriptor == fi->descriptor) {
+ exceptions_throw_classformaterror(c, "Repetitive field name/signature");
+ goto return_exception;
+ }
+ } while ((old = next[old]));
+ }
+ hashtab[index] = i + 1;
+ }
+
+ /* Check methods */
+ memset(hashtab, 0, sizeof(u2) * (hashlen + hashlen/5));
- 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. (Undefined if an error occurs.)
+ for (i = 0; i < c->methodscount; ++i) {
+ methodinfo *mi = c->methods + i;
- mode.......a combination (binary or) of the following flags:
+ /* It's ok if we lose bits here */
+ index = ((((size_t) mi->name) +
+ ((size_t) mi->descriptor)) >> shift) % hashlen;
- (Flags marked with * are the default settings.)
+ /*{ JOWENN
+ int dbg;
+ for (dbg=0;dbg<hashlen+hashlen/5;++dbg){
+ printf("Hash[%d]:%d\n",dbg,hashtab[dbg]);
+ }
+ }*/
- What to do if a reference type descriptor is parsed successfully:
+ if ((old = hashtab[index])) {
+ old--;
+ next[i] = old;
+ do {
+ if (c->methods[old].name == mi->name &&
+ c->methods[old].descriptor == mi->descriptor) {
+ exceptions_throw_classformaterror(c, "Repetitive method name/signature");
+ goto return_exception;
+ }
+ } while ((old = next[old]));
+ }
+ hashtab[index] = i + 1;
+ }
+
+ MFREE(hashtab, u2, (hashlen + len));
+ }
+#endif /* ENABLE_VERIFIER */
- CLASSLOAD_SKIP...skip it and return something != NULL
- * CLASSLOAD_NEW....get classinfo * via class_new
- CLASSLOAD_LOAD...get classinfo * via loader_load
+#if defined(ENABLE_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
- How to handle primitive types:
+ /* load attribute structures */
- * CLASSLOAD_PRIMITIVE.......return primitive class (eg. "int")
- CLASSLOAD_NULLPRIMITIVE...return NULL for primitive types
+ if (!suck_check_classbuffer_size(cb, 2))
+ goto return_exception;
- How to handle "V" descriptors:
+ if (!load_attributes(cb, suck_u2(cb)))
+ goto return_exception;
- * CLASSLOAD_VOID.....handle it like other primitive types
- CLASSLOAD_NOVOID...treat it as an error
+#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);
- How to deal with extra characters after the end of the
- descriptor:
+ if (classdata_left > 0) {
+ exceptions_throw_classformaterror(c, "Extra bytes at the end of class file");
+ goto return_exception;
+ }
+ }
+#endif
- * CLASSLOAD_NOCHECKEND...ignore (useful for parameter lists)
- CLASSLOAD_CHECKEND.....treat them as an error
+ /* release dump area */
- How to deal with errors:
+ dump_release(dumpsize);
- * CLASSLOAD_PANIC....abort execution with an error message
- CLASSLOAD_NOPANIC..return NULL on error
+ /* revert loading state and class is loaded */
-*******************************************************************************/
+ c->state = (c->state & ~CLASS_LOADING) | CLASS_LOADED;
-classinfo *class_from_descriptor(char *utf_ptr, char *end_ptr,
- char **next, int mode)
-{
- char *start = utf_ptr;
- bool error = false;
- utf *name;
+#if !defined(NDEBUG)
+ if (loadverbose)
+ log_message_class("Loading done class: ", c);
+#endif
- SKIP_FIELDDESCRIPTOR_SAFE(utf_ptr, end_ptr, error);
+ return c;
- if (mode & CLASSLOAD_CHECKEND)
- error |= (utf_ptr != end_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 */
- }
- }
- }
+return_exception:
+ /* release dump area */
- /* An error occurred */
- if (mode & CLASSLOAD_NOPANIC)
- return NULL;
+ dump_release(dumpsize);
- log_plain("Invalid descriptor at beginning of '");
- log_plain_utf(utf_new(start, end_ptr - start));
- log_plain("'");
- log_nl();
-
- panic("Invalid descriptor");
+ /* an exception has been thrown */
- /* keep compiler happy */
return NULL;
}
-/******************* function: type_from_descriptor ****************************
+/* load_newly_created_array ****************************************************
- return the basic type indicated by the given descriptor
+ Load a newly created array class.
- This function parses a descriptor and returns its basic type as
- TYPE_INT, TYPE_LONG, TYPE_FLOAT, TYPE_DOUBLE, TYPE_ADDRESS or TYPE_VOID.
+ RETURN VALUE:
+ c....................the array class C has been loaded
+ other classinfo......the array class was found in the class cache,
+ C has been freed
+ NULL.................an exception has been thrown
- cls...if non-NULL the referenced variable is set to the classinfo *
- returned by class_from_descriptor.
+ Note:
+ This is an internal function. Do not use it unless you know exactly
+ what you are doing!
- 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.
+ Use one of the load_class_... functions for general array class loading.
-********************************************************************************/
+*******************************************************************************/
-int type_from_descriptor(classinfo **cls, char *utf_ptr, char *end_ptr,
- char **next, int mode)
+classinfo *load_newly_created_array(classinfo *c, java_objectheader *loader)
{
- 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;
+ classinfo *comp = NULL;
+ methodinfo *clone;
+ methoddesc *clonedesc;
+ constant_classref *classrefs;
+ char *text;
+ s4 namelen;
+ utf *u;
+
+ text = c->name->text;
+ namelen = c->name->blength;
+
+ /* Check array class name */
+
+ if (namelen < 2 || text[0] != '[') {
+ *exceptionptr = new_noclassdeffounderror(c->name);
+ return NULL;
}
- return TYPE_ADDRESS;
-}
+ /* Check the element type */
-/*************** function: create_pseudo_classes *******************************
+ switch (text[1]) {
+ case '[':
+ /* c is an array of arrays. We have to create the component class. */
- create pseudo classes used by the typechecker
+ u = utf_new(text + 1, namelen - 1);
+ if (!(comp = load_class_from_classloader(u, loader)))
+ return NULL;
-********************************************************************************/
+ LOADER_ASSERT(comp->state & CLASS_LOADED);
-static void create_pseudo_classes()
-{
- /* pseudo class for Arraystubs (extends java.lang.Object) */
-
- 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;
-
- class_link(pseudo_class_Arraystub);
-
- pseudo_class_Arraystub_vftbl = pseudo_class_Arraystub->vftbl;
-
- /* pseudo class representing the null type */
-
- 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);
-
- /* 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); */
-}
+ if (opt_eager)
+ if (!link_class(c))
+ return NULL;
+ /* the array's flags are that of the component class */
+ c->flags = (comp->flags & ~ACC_INTERFACE) | ACC_FINAL | ACC_ABSTRACT;
+ c->classloader = comp->classloader;
+ break;
-/********************** Function: loader_init **********************************
+ case 'L':
+ /* c is an array of objects. */
- Initializes all lists and loads all classes required for the system or the
- compiler.
+ /* check for cases like `[L;' or `[L[I;' or `[Ljava.lang.Object' */
+ if (namelen < 4 || text[2] == '[' || text[namelen - 1] != ';') {
+ *exceptionptr = new_noclassdeffounderror(c->name);
+ return NULL;
+ }
-*******************************************************************************/
-
-void loader_init(u1 *stackbottom)
-{
- interfaceindex = 0;
-
- /* 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_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");
- 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);
+ u = utf_new(text + 2, namelen - 3);
- class_java_lang_String = class_new(utf_new_char("java/lang/String"));
- class_load(class_java_lang_String);
- class_link(class_java_lang_String);
+ if (!(comp = load_class_from_classloader(u, loader)))
+ return NULL;
- class_java_lang_Cloneable = class_new(utf_new_char("java/lang/Cloneable"));
- class_load(class_java_lang_Cloneable);
- class_link(class_java_lang_Cloneable);
+ LOADER_ASSERT(comp->state & CLASS_LOADED);
- class_java_io_Serializable =
- class_new(utf_new_char("java/io/Serializable"));
- class_load(class_java_io_Serializable);
- class_link(class_java_io_Serializable);
+ if (opt_eager)
+ if (!link_class(c))
+ return NULL;
- /* create classes representing primitive types */
- create_primitive_classes();
+ /* the array's flags are that of the component class */
+ c->flags = (comp->flags & ~ACC_INTERFACE) | ACC_FINAL | ACC_ABSTRACT;
+ c->classloader = comp->classloader;
+ break;
- /* create classes used by the typechecker */
- create_pseudo_classes();
+ default:
+ /* c is an array of a primitive type */
- /* correct vftbl-entries (retarded loading of class java/lang/String) */
- stringtable_update();
+ /* check for cases like `[II' */
+ if (namelen > 2) {
+ *exceptionptr = new_noclassdeffounderror(c->name);
+ return NULL;
+ }
-#if defined(USE_THREADS)
- if (stackbottom != 0)
- initLocks();
-#endif
-}
+ /* the accessibility of the array class is public (VM Spec 5.3.3) */
+ c->flags = ACC_PUBLIC | ACC_FINAL | ACC_ABSTRACT;
+ c->classloader = NULL;
+ }
+ LOADER_ASSERT(class_java_lang_Object);
+ LOADER_ASSERT(class_java_lang_Cloneable);
+ LOADER_ASSERT(class_java_io_Serializable);
-/* loader_compute_subclasses ***************************************************
+ /* setup the array class */
- XXX
+ c->super.cls = class_java_lang_Object;
-*******************************************************************************/
+ c->interfacescount = 2;
+ c->interfaces = MNEW(classref_or_classinfo, 2);
-static void loader_compute_class_values(classinfo *c);
+ if (opt_eager) {
+ classinfo *tc;
-void loader_compute_subclasses(classinfo *c)
-{
-#if defined(USE_THREADS)
-#if defined(NATIVE_THREADS)
- compiler_lock();
-#else
- intsDisable();
-#endif
-#endif
+ tc = class_java_lang_Cloneable;
+ LOADER_ASSERT(tc->state & CLASS_LOADED);
+ list_addfirst(&unlinkedclasses, tc);
+ c->interfaces[0].cls = tc;
- if (!(c->flags & ACC_INTERFACE)) {
- c->nextsub = 0;
- c->sub = 0;
- }
+ tc = class_java_io_Serializable;
+ LOADER_ASSERT(tc->state & CLASS_LOADED);
+ list_addfirst(&unlinkedclasses, tc);
+ c->interfaces[1].cls = tc;
- if (!(c->flags & ACC_INTERFACE) && (c->super != NULL)) {
- c->nextsub = c->super->sub;
- c->super->sub = c;
+ } else {
+ c->interfaces[0].cls = class_java_lang_Cloneable;
+ c->interfaces[1].cls = class_java_io_Serializable;
}
- classvalue = 0;
+ c->methodscount = 1;
+ c->methods = MNEW(methodinfo, c->methodscount);
- /* this is the java.lang.Object special case */
+ classrefs = MNEW(constant_classref, 2);
+ CLASSREF_INIT(classrefs[0], c, c->name);
+ CLASSREF_INIT(classrefs[1], c, utf_java_lang_Object);
- if (!class_java_lang_Object) {
- loader_compute_class_values(c);
+ /* create descriptor for clone method */
+ /* we need one paramslot which is reserved for the 'this' parameter */
+ clonedesc = NEW(methoddesc);
+ clonedesc->returntype.type = TYPE_ADDRESS;
+ clonedesc->returntype.classref = classrefs + 1;
+ clonedesc->returntype.arraydim = 0;
+ /* initialize params to "empty", add real params below in
+ descriptor_params_from_paramtypes */
+ clonedesc->paramcount = 0;
+ clonedesc->paramslots = 0;
+ clonedesc->paramtypes[0].classref = classrefs + 0;
- } else {
- loader_compute_class_values(class_java_lang_Object);
- }
+ /* create methodinfo */
-#if defined(USE_THREADS)
-#if defined(NATIVE_THREADS)
- compiler_unlock();
-#else
- intsRestore();
-#endif
+ clone = c->methods;
+ MSET(clone, 0, methodinfo, 1);
+
+#if defined(USE_THREADS) && defined(NATIVE_THREADS)
+ initObjectLock(&clone->header);
#endif
-}
+ /* if you delete the ACC_NATIVE below, set clone->maxlocals=1 (interpreter
+ related) */
+ clone->flags = ACC_PUBLIC | ACC_NATIVE;
+ clone->name = utf_clone;
+ clone->descriptor = utf_void__java_lang_Object;
+ clone->parseddesc = clonedesc;
+ clone->class = c;
+ clone->monoPoly = MONO;
-/* loader_compute_class_values *************************************************
+ /* parse the descriptor to get the register allocation */
- XXX
+ if (!descriptor_params_from_paramtypes(clonedesc, clone->flags))
+ return false;
-*******************************************************************************/
+ clone->entrypoint =
+ codegen_createnativestub((functionptr) &builtin_clone_array, clone);
-static void loader_compute_class_values(classinfo *c)
-{
- classinfo *subs;
+ /* XXX: field: length? */
- c->vftbl->baseval = ++classvalue;
+ /* array classes are not loaded from class files */
- subs = c->sub;
- while (subs) {
- loader_compute_class_values(subs);
- subs = subs->nextsub;
- }
+ c->state |= CLASS_LOADED;
+ c->parseddescs = (u1 *) clonedesc;
+ c->parseddescsize = sizeof(methodinfo);
+ c->classrefs = classrefs;
+ c->classrefcount = 1;
- c->vftbl->diffval = classvalue - c->vftbl->baseval;
+ /* insert class into the loaded class cache */
+ /* XXX free classinfo if NULL returned? */
+
+ return classcache_store(loader, c, true);
}
-/******************** Function: loader_close ***********************************
+/* loader_close ****************************************************************
- Frees all resources
+ Frees all resources.
*******************************************************************************/
-void loader_close()
+void loader_close(void)
{
- classinfo *c;
- s4 slot;
-
- for (slot = 0; slot < class_hash.size; slot++) {
- c = class_hash.ptr[slot];
-
- while (c) {
- class_free(c);
- c = c->hashlink;
- }
- }
+ /* empty */
}
projects / cacao.git / blobdiff