-/* loader.c - class loader functions
+/* src/vm/loader.c - class loader functions
- Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
- R. Grafl, A. Krall, C. Kruegel, C. Oates, R. Obermaisser,
- M. Probst, S. Ring, E. Steiner, C. Thalinger, D. Thuernbeck,
- P. Tomsich, J. Wenninger
+ Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates,
+ R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
+ C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
+ Institut f. Computersprachen - TU Wien
This file is part of CACAO.
Contact: cacao@complang.tuwien.ac.at
Authors: Reinhard Grafl
+
Changes: Andreas Krall
Roman Obermaiser
Mark Probst
- Edwin Steiner
+ Edwin Steiner
+ Christian Thalinger
- $Id: loader.c 951 2004-03-11 17:30:03Z jowenn $
+ $Id: loader.c 3386 2005-10-07 14:02:52Z edwin $
*/
-
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <sys/stat.h>
-#include "global.h"
-#include "loader.h"
-#include "main.h"
-#include "native.h"
-#include "tables.h"
-#include "builtin.h"
-#include "jit.h"
-#include "asmpart.h"
-#include "toolbox/memory.h"
-#include "toolbox/loging.h"
-#include "threads/thread.h"
-#include "threads/locks.h"
-#include <sys/stat.h>
-#ifdef USE_ZLIB
-#include "unzip.h"
+#include "config.h"
+#include "mm/memory.h"
+#include "native/native.h"
+#include "native/include/java_lang_Throwable.h"
+
+#if defined(USE_THREADS)
+# if defined(NATIVE_THREADS)
+# include "threads/native/threads.h"
+# else
+# include "threads/green/threads.h"
+# include "threads/green/locks.h"
+# endif
+#endif
+
+#include "toolbox/logging.h"
+#include "toolbox/util.h"
+#include "vm/exceptions.h"
+#include "vm/builtin.h"
+#include "vm/global.h"
+#include "vm/linker.h"
+#include "vm/loader.h"
+#include "vm/options.h"
+#include "vm/statistics.h"
+#include "vm/stringlocal.h"
+#include "vm/tables.h"
+#include "vm/classcache.h"
+
+#if defined(USE_ZLIB)
+# include "vm/unzip.h"
+#endif
+
+#include "vm/jit/asmpart.h"
+#include "vm/jit/codegen.inc.h"
+
+/******************************************************************************/
+/* DEBUG HELPERS */
+/******************************************************************************/
+
+/*#define LOADER_VERBOSE*/
+
+#ifndef NDEBUG
+#define LOADER_DEBUG
+#endif
+
+#ifdef LOADER_DEBUG
+#define LOADER_ASSERT(cond) assert(cond)
+#else
+#define LOADER_ASSERT(cond)
#endif
#undef JOWENN_DEBUG
#undef JOWENN_DEBUG1
#undef JOWENN_DEBUG2
-/* global variables ***********************************************************/
+#ifdef LOADER_VERBOSE
+static int loader_recursion = 0;
+#define LOADER_INDENT(str) do { int i; for(i=0;i<loader_recursion*4;++i) {str[i]=' ';} str[i]=0;} while (0)
+#define LOADER_INC() loader_recursion++
+#define LOADER_DEC() loader_recursion--
+#else
+#define LOADER_INC()
+#define LOADER_DEC()
+#endif
+
+
+/********************************************************************
+ list of classpath entries (either filesystem directories or
+ ZIP/JAR archives
+********************************************************************/
-int count_class_infos = 0; /* variables for measurements */
-int count_const_pool_len = 0;
-int count_vftbl_len = 0;
-int count_all_methods = 0;
-int count_vmcode_len = 0;
-int count_extable_len = 0;
-int count_class_loads = 0;
-int count_class_inits = 0;
+classpath_info *classpath_entries = NULL;
-static s4 interfaceindex; /* sequential numbering of interfaces */
-static s4 classvalue;
-list unloadedclasses; /* list of all referenced but not loaded classes */
-list unlinkedclasses; /* list of all loaded but not linked classes */
-list linkedclasses; /* list of all completely linked classes */
+/* loader_init *****************************************************************
+ Initializes all lists and loads all classes required for the system
+ or the compiler.
-/* utf-symbols for pointer comparison of frequently used strings */
+*******************************************************************************/
+
+bool loader_init(u1 *stackbottom)
+{
+#if defined(USE_THREADS) && defined(NATIVE_THREADS)
+ classpath_info *cpi;
-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_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 */
+ /* Initialize the monitor pointer for zip/jar file locking. */
+ for (cpi = classpath_entries; cpi != NULL; cpi = cpi->next) {
+ if (cpi->type == CLASSPATH_ARCHIVE)
+ initObjectLock(&cpi->header);
+ }
+#endif
+ /* load some important classes */
+ if (!(class_java_lang_Object = load_class_bootstrap(utf_java_lang_Object)))
+ return false;
-utf* clinit_desc(){
- return utf_fidesc;
-}
-utf* clinit_name(){
- return utf_clinit;
-}
+ if (!(class_java_lang_String = load_class_bootstrap(utf_java_lang_String)))
+ return false;
+ if (!(class_java_lang_Cloneable =
+ load_class_bootstrap(utf_java_lang_Cloneable)))
+ return false;
-/* important system classes ***************************************************/
+ if (!(class_java_io_Serializable =
+ load_class_bootstrap(utf_java_io_Serializable)))
+ return false;
-classinfo *class_java_lang_Object;
-classinfo *class_java_lang_String;
-classinfo *class_java_lang_Throwable;
-classinfo *class_java_lang_Cloneable;
-classinfo *class_java_io_Serializable;
+ /* load classes for wrapping primitive types */
-/* Pseudo classes for the typechecker */
-classinfo *pseudo_class_Arraystub = NULL;
-classinfo *pseudo_class_Null = NULL;
-classinfo *pseudo_class_New = NULL;
-vftbl *pseudo_class_Arraystub_vftbl = NULL;
+ if (!(class_java_lang_Void = load_class_bootstrap(utf_java_lang_Void)))
+ return false;
-/* stefan */
-/* These are made static so they cannot be used for throwing in native */
-/* functions. */
-static classinfo *class_java_lang_ClassCastException;
-static classinfo *class_java_lang_NullPointerException;
-static classinfo *class_java_lang_ArrayIndexOutOfBoundsException;
-static classinfo *class_java_lang_NegativeArraySizeException;
-static classinfo *class_java_lang_OutOfMemoryError;
-static classinfo *class_java_lang_ArithmeticException;
-static classinfo *class_java_lang_ArrayStoreException;
-static classinfo *class_java_lang_ThreadDeath;
+ if (!(class_java_lang_Boolean =
+ load_class_bootstrap(utf_java_lang_Boolean)))
+ return false;
-utf *array_packagename = NULL;
+ if (!(class_java_lang_Byte = load_class_bootstrap(utf_java_lang_Byte)))
+ return false;
-static int loader_inited = 0;
+ if (!(class_java_lang_Character =
+ load_class_bootstrap(utf_java_lang_Character)))
+ return false;
+ if (!(class_java_lang_Short = load_class_bootstrap(utf_java_lang_Short)))
+ return false;
-/********************************************************************
- list of classpath entries (either filesystem directories or
- ZIP/JAR archives
-********************************************************************/
-static classpath_info *classpath_entries=0;
+ if (!(class_java_lang_Integer =
+ load_class_bootstrap(utf_java_lang_Integer)))
+ return false;
+ if (!(class_java_lang_Long = load_class_bootstrap(utf_java_lang_Long)))
+ return false;
-/******************************************************************************
+ if (!(class_java_lang_Float = load_class_bootstrap(utf_java_lang_Float)))
+ return false;
- 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
-
- ******************************************************************************/
+ if (!(class_java_lang_Double = load_class_bootstrap(utf_java_lang_Double)))
+ return false;
+
+
+ /* load some other important classes */
+
+ 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;
+
+ if (!(class_java_lang_SecurityManager =
+ load_class_bootstrap(utf_java_lang_SecurityManager)))
+ return false;
+
+ if (!(class_java_lang_System = load_class_bootstrap(utf_java_lang_System)))
+ return false;
+
+ if (!(class_java_lang_Thread =
+ load_class_bootstrap(utf_new_char("java/lang/Thread"))))
+ return false;
+
+ if (!(class_java_lang_ThreadGroup =
+ load_class_bootstrap(utf_java_lang_ThreadGroup)))
+ return false;
+
+ if (!(class_java_lang_VMThread =
+ load_class_bootstrap(utf_new_char("java/lang/VMThread"))))
+ return false;
+
+
+ /* some classes which may be used more often */
+
+ if (!(class_java_lang_StackTraceElement =
+ load_class_bootstrap(utf_java_lang_StackTraceElement)))
+ return false;
+
+ 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;
+
+ if (!(class_java_lang_reflect_Method =
+ load_class_bootstrap(utf_java_lang_reflect_Method)))
+ return false;
+
+ if (!(class_java_security_PrivilegedAction =
+ load_class_bootstrap(utf_new_char("java/security/PrivilegedAction"))))
+ return false;
+
+ if (!(class_java_util_Vector = load_class_bootstrap(utf_java_util_Vector)))
+ return false;
+
+ if (!(arrayclass_java_lang_Object =
+ load_class_bootstrap(utf_new_char("[Ljava/lang/Object;"))))
+ return false;
+
+#if defined(USE_THREADS)
+ if (stackbottom != 0)
+ initLocks();
+#endif
+
+ return true;
+}
-/* 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 }
-};
-
-
-/* instances of important system classes **************************************/
-
-java_objectheader *proto_java_lang_ClassCastException;
-java_objectheader *proto_java_lang_NullPointerException;
-java_objectheader *proto_java_lang_ArrayIndexOutOfBoundsException;
-java_objectheader *proto_java_lang_NegativeArraySizeException;
-java_objectheader *proto_java_lang_OutOfMemoryError;
-java_objectheader *proto_java_lang_ArithmeticException;
-java_objectheader *proto_java_lang_ArrayStoreException;
-java_objectheader *proto_java_lang_ThreadDeath;
/************* functions for reading classdata *********************************
*******************************************************************************/
-static char *classpath = ""; /* searchpath for classfiles */
-static u1 *classbuffer = NULL; /* pointer to buffer with classfile-data */
-static u1 *classbuf_pos; /* current position in classfile buffer */
-static int classbuffer_size; /* size of classfile-data */
+/* check_classbuffer_size ******************************************************
+
+ assert that at least <len> bytes are left to read
+ <len> is limited to the range of non-negative s4 values
+
+*******************************************************************************/
+
+inline bool check_classbuffer_size(classbuffer *cb, s4 len)
+{
+ if (len < 0 || ((cb->data + cb->size) - cb->pos - 1) < len) {
+ *exceptionptr =
+ new_classformaterror((cb)->class, "Truncated class file");
+
+ return false;
+ }
+
+ return true;
+}
+
+
+/* suck_nbytes *****************************************************************
+
+ transfer block of classfile data into a buffer
+
+*******************************************************************************/
+
+inline void suck_nbytes(u1 *buffer, classbuffer *cb, s4 len)
+{
+ memcpy(buffer, cb->pos + 1, len);
+ cb->pos += len;
+}
+
-/* assert that at least <len> bytes are left to read */
-/* <len> is limited to the range of non-negative s4 values */
-#define ASSERT_LEFT(len) \
- do {if ( ((s4)(len)) < 0 \
- || ((classbuffer + classbuffer_size) - classbuf_pos - 1) < (len)) \
- panic("Unexpected end of classfile"); } while(0)
+/* skip_nbytes ****************************************************************
-/* transfer block of classfile data into a buffer */
+ skip block of classfile data
-#define suck_nbytes(buffer,len) \
- do {ASSERT_LEFT(len); \
- memcpy(buffer,classbuf_pos+1,len); \
- classbuf_pos+=len;} while (0)
+*******************************************************************************/
-/* skip block of classfile data */
+inline void skip_nbytes(classbuffer *cb, s4 len)
+{
+ cb->pos += len;
+}
-#define skip_nbytes(len) \
- do {ASSERT_LEFT(len); \
- classbuf_pos+=len;} while(0)
-inline u1 suck_u1()
+inline u1 suck_u1(classbuffer *cb)
{
- ASSERT_LEFT(1);
- return *++classbuf_pos;
+ return *++(cb->pos);
}
-inline u2 suck_u2()
+
+
+inline u2 suck_u2(classbuffer *cb)
{
- u1 a=suck_u1(), b=suck_u1();
- return ((u2)a<<8)+(u2)b;
+ u1 a = suck_u1(cb);
+ u1 b = suck_u1(cb);
+ return ((u2) a << 8) + (u2) b;
}
-inline u4 suck_u4()
+
+
+inline u4 suck_u4(classbuffer *cb)
{
- u1 a=suck_u1(), b=suck_u1(), c=suck_u1(), d=suck_u1();
- return ((u4)a<<24)+((u4)b<<16)+((u4)c<<8)+(u4)d;
+ u1 a = suck_u1(cb);
+ u1 b = suck_u1(cb);
+ u1 c = suck_u1(cb);
+ u1 d = suck_u1(cb);
+ return ((u4) a << 24) + ((u4) b << 16) + ((u4) c << 8) + (u4) d;
}
-#define suck_s8() (s8) suck_u8()
-#define suck_s2() (s2) suck_u2()
-#define suck_s4() (s4) suck_u4()
-#define suck_s1() (s1) suck_u1()
/* get u8 from classfile data */
-static u8 suck_u8()
+static u8 suck_u8(classbuffer *cb)
{
#if U8_AVAILABLE
u8 lo, hi;
- hi = suck_u4();
- lo = suck_u4();
+ hi = suck_u4(cb);
+ lo = suck_u4(cb);
return (hi << 32) + lo;
#else
u8 v;
- v.high = suck_u4();
- v.low = suck_u4();
+ v.high = suck_u4(cb);
+ v.low = suck_u4(cb);
return v;
#endif
}
/* get float from classfile data */
-static float suck_float()
+static float suck_float(classbuffer *cb)
{
float f;
#if !WORDS_BIGENDIAN
- u1 buffer[4];
- u2 i;
- for (i = 0; i < 4; i++) buffer[3 - i] = suck_u1();
- memcpy((u1*) (&f), buffer, 4);
-#else
- suck_nbytes((u1*) (&f), 4);
+ u1 buffer[4];
+ u2 i;
+
+ for (i = 0; i < 4; i++)
+ buffer[3 - i] = suck_u1(cb);
+
+ memcpy((u1*) (&f), buffer, 4);
+#else
+ suck_nbytes((u1*) (&f), cb, 4);
#endif
- PANICIF (sizeof(float) != 4, "Incompatible float-format");
+ if (sizeof(float) != 4) {
+ *exceptionptr = new_internalerror("Incompatible float-format");
+
+ /* XXX should we exit in such a case? */
+ throw_exception_exit();
+ }
return f;
}
/* get double from classfile data */
-static double suck_double()
+static double suck_double(classbuffer *cb)
{
double d;
#if !WORDS_BIGENDIAN
- u1 buffer[8];
- u2 i;
- for (i = 0; i < 8; i++) buffer[7 - i] = suck_u1 ();
- memcpy((u1*) (&d), buffer, 8);
+ u1 buffer[8];
+ u2 i;
+
+#if defined(__ARM__) && defined(__ARMEL__) && !defined(__VFP_FP__)
+ /*
+ * On little endian ARM processors when using FPA, word order
+ * of doubles is still big endian. So take that into account
+ * here. When using VFP, word order of doubles follows byte
+ * order. (michi 2005/07/24)
+ */
+ for (i = 0; i < 4; i++)
+ buffer[3 - i] = suck_u1(cb);
+ for (i = 0; i < 4; i++)
+ buffer[7 - i] = suck_u1(cb);
+#else
+ for (i = 0; i < 8; i++)
+ buffer[7 - i] = suck_u1(cb);
+#endif /* defined(__ARM__) && ... */
+
+ memcpy((u1*) (&d), buffer, 8);
#else
- suck_nbytes((u1*) (&d), 8);
+ suck_nbytes((u1*) (&d), cb, 8);
#endif
- PANICIF (sizeof(double) != 8, "Incompatible double-format" );
+ if (sizeof(double) != 8) {
+ *exceptionptr = new_internalerror("Incompatible double-format");
+
+ /* XXX should we exit in such a case? */
+ throw_exception_exit();
+ }
return d;
}
*******************************************************************************/
-void suck_init(char *cpath)
+void suck_init(char *classpath)
{
- char *filename=0;
- char *start;
- char *end;
- int isZip;
- int filenamelen;
- union classpath_info *tmp;
- union classpath_info *insertAfter=0;
- if (!cpath) return;
- classpath = cpath;
- classbuffer = NULL;
-
- if (classpath_entries) panic("suck_init should be called only once");
- for(start=classpath;(*start)!='\0';) {
- for (end=start; ((*end)!='\0') && ((*end)!=':') ; end++);
- if (start!=end) {
- isZip=0;
- filenamelen=(end-start);
- if (filenamelen>3) {
- if (
- (
- (
- ((*(end-1))=='p') ||
- ((*(end-1))=='P')
- ) &&
- (
- ((*(end-2))=='i') ||
- ((*(end-2))=='I')
- ) &&
- (
- ((*(end-3))=='z') ||
- ((*(end-3))=='Z')
- )
- ) ||
- (
- (
- ((*(end-1))=='r') ||
- ((*(end-1))=='R')
- ) &&
- (
- ((*(end-2))=='a') ||
- ((*(end-2))=='A')
- ) &&
- (
- ((*(end-3))=='j') ||
- ((*(end-3))=='J')
- )
- )
- ) isZip=1;
-#if 0
- if (
- ( ( (*(end - 1)) == 'p') || ( (*(end - 1)) == 'P')) &&
- (((*(end - 2)) == 'i') || ( (*(end - 2)) == 'I'))) &&
- (( (*(end - 3)) == 'z') || ((*(end - 3)) == 'Z')))
- ) {
- isZip=1;
- } else if ( (( (*(end - 1)) == 'r') || ( (*(end - 1)) == 'R')) &&
- ((*(end - 2)) == 'a') || ( (*(end - 2)) == 'A')) &&
- (( (*(end - 3)) == 'j') || ((*(end - 3)) == 'J')) ) {
- isZip=1;
+ char *start;
+ char *end;
+ char *filename;
+ s4 filenamelen;
+ bool is_zip;
+ classpath_info *cpi;
+ classpath_info *lastcpi;
+ char *cwd;
+ s4 cwdlen;
+
+ /* search for last classpath entry (only if there already some) */
+
+ if ((lastcpi = classpath_entries)) {
+ while (lastcpi->next)
+ lastcpi = lastcpi->next;
+ }
+
+ 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;
}
-#endif
}
- if (filenamelen>=(CLASSPATH_MAXFILENAME-1)) panic("path length >= MAXFILENAME in suck_init");
- if (!filename)
- filename=(char*)malloc(CLASSPATH_MAXFILENAME);
- strncpy(filename,start,filenamelen);
- filename[filenamelen+1]='\0';
- tmp=0;
-
- if (isZip) {
-#ifdef USE_ZLIB
- unzFile uf=unzOpen(filename);
+
+ /* save classpath entries as absolute pathnames */
+
+ cwd = NULL;
+ cwdlen = 0;
+
+ if (*start != '/') { /* XXX fix me for win32 */
+ cwd = _Jv_getcwd();
+ cwdlen = strlen(cwd) + strlen("/");
+ }
+
+ /* allocate memory for filename and fill it */
+
+ filename = MNEW(char, filenamelen + cwdlen + strlen("/") +
+ strlen("0"));
+
+ if (cwd) {
+ strcpy(filename, cwd);
+ strcat(filename, "/");
+ strncat(filename, start, filenamelen);
+
+ /* add cwd length to file length */
+ filenamelen += cwdlen;
+
+ } else {
+ strncpy(filename, start, filenamelen);
+ filename[filenamelen] = '\0';
+ }
+
+ cpi = NULL;
+
+ if (is_zip) {
+#if defined(USE_ZLIB)
+ unzFile uf = unzOpen(filename);
+
if (uf) {
- tmp=(union classpath_info*)malloc(sizeof(classpath_info));
- tmp->archive.type=CLASSPATH_ARCHIVE;
- tmp->archive.uf=uf;
- tmp->archive.next=0;
- filename=0;
+ cpi = NEW(classpath_info);
+ cpi->type = CLASSPATH_ARCHIVE;
+ cpi->uf = uf;
+ cpi->next = NULL;
+ cpi->path = filename;
+ cpi->pathlen = filenamelen;
+
+ /* SUN compatible -verbose:class output */
+
+ if (opt_verboseclass)
+ printf("[Opened %s]\n", filename);
}
+
#else
- panic("Zip/JAR not supported");
+ throw_cacao_exception_exit(string_java_lang_InternalError,
+ "zip/jar files not supported");
#endif
} else {
- tmp=(union classpath_info*)malloc(sizeof(classpath_info));
- tmp->filepath.type=CLASSPATH_PATH;
- tmp->filepath.next=0;
- if (filename[filenamelen-1]!='/') {/*PERHAPS THIS SHOULD BE READ FROM A GLOBAL CONFIGURATION */
- filename[filenamelen]='/';
- filename[filenamelen+1]='\0';
+ cpi = NEW(classpath_info);
+ cpi->type = CLASSPATH_PATH;
+ cpi->next = NULL;
+
+ if (filename[filenamelen - 1] != '/') {/*PERHAPS THIS SHOULD BE READ FROM A GLOBAL CONFIGURATION */
+ filename[filenamelen] = '/';
+ filename[filenamelen + 1] = '\0';
filenamelen++;
}
-
- tmp->filepath.filename=filename;
- tmp->filepath.pathlen=filenamelen;
- filename=0;
+
+ cpi->path = filename;
+ cpi->pathlen = filenamelen;
}
- if (tmp) {
- if (insertAfter) {
- insertAfter->filepath.next=tmp;
- } else {
- classpath_entries=tmp;
+ /* attach current classpath entry */
+
+ if (cpi) {
+ if (!classpath_entries)
+ classpath_entries = cpi;
+ else
+ lastcpi->next = cpi;
+
+ lastcpi = cpi;
}
- insertAfter=tmp;
+ }
+
+ /* goto next classpath entry, skip ':' delimiter */
+
+ if ((*end) == ':') {
+ start = end + 1;
+
+ } else {
+ start = end;
}
}
- if ((*end)==':') start=end+1; else start=end;
-
-
- if (filename!=0) free(filename);
}
+
+/* loader_load_all_classes *****************************************************
+
+ Loads all classes specified in the BOOTCLASSPATH.
+
+*******************************************************************************/
+
+void loader_load_all_classes(void)
+{
+ classpath_info *cpi;
+ classinfo *c;
+
+ for (cpi = classpath_entries; cpi != 0; cpi = cpi->next) {
+#if defined(USE_ZLIB)
+ if (cpi->type == CLASSPATH_ARCHIVE) {
+ cacao_entry_s *ce;
+ unz_s *s;
+
+ s = (unz_s *) cpi->uf;
+ ce = s->cacao_dir_list;
+
+ while (ce) {
+ /* skip all entries in META-INF and .properties, .png files */
+
+ if (strncmp(ce->name->text, "META-INF", strlen("META-INF")) &&
+ !strstr(ce->name->text, ".properties") &&
+ !strstr(ce->name->text, ".png"))
+ c = load_class_bootstrap(ce->name);
+
+ ce = ce->next;
+ }
+
+ } else {
+#endif
+#if defined(USE_ZLIB)
+ }
+#endif
+ }
}
-/************************** function suck_start ********************************
- 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.
+/* suck_start ******************************************************************
+
+ 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.
*******************************************************************************/
-bool suck_start(utf *classname)
+classbuffer *suck_start(classinfo *c)
{
- classpath_info *currPos;
- char *utf_ptr;
- char c;
- char filename[CLASSPATH_MAXFILENAME+10]; /* room for '.class' */
- int filenamelen=0;
+ classpath_info *cpi;
+ char *filename;
+ s4 filenamelen;
+ char *path;
FILE *classfile;
- int err;
+ bool found;
+ s4 len;
struct stat buffer;
+ classbuffer *cb;
+
+ /* initialize return value */
+
+ found = false;
+ cb = NULL;
+
+ filenamelen = utf_strlen(c->name) + strlen(".class") + strlen("0");
+ filename = MNEW(char, filenamelen);
+
+ utf_sprint(filename, c->name);
+ strcat(filename, ".class");
+
+ /* walk through all classpath entries */
- if (classbuffer) return true; /* classbuffer is already valid */
-
- utf_ptr = classname->text;
- while (utf_ptr < utf_end(classname)) {
- PANICIF (filenamelen >= CLASSPATH_MAXFILENAME, "Filename too long");
- c = *utf_ptr++;
- if ((c <= ' ' || c > 'z') && (c != '/')) /* invalid character */
- c = '?';
- filename[filenamelen++] = c;
- }
- strcpy(filename + filenamelen, ".class");
- filenamelen+=6;
- for (currPos=classpath_entries;currPos!=0;currPos=currPos->filepath.next) {
-#ifdef USE_ZLIB
- if (currPos->filepath.type==CLASSPATH_ARCHIVE) {
- if (cacao_locate(currPos->archive.uf,classname) == UNZ_OK) {
+ for (cpi = classpath_entries; cpi != NULL && cb == NULL; cpi = cpi->next) {
+#if defined(USE_ZLIB)
+ if (cpi->type == CLASSPATH_ARCHIVE) {
+
+#if defined(USE_THREADS)
+ /* enter a monitor on zip/jar archives */
+
+ builtin_monitorenter((java_objectheader *) cpi);
+#endif
+
+ if (cacao_locate(cpi->uf, c->name) == UNZ_OK) {
unz_file_info file_info;
- /*log_text("Class found in zip file");*/
- if (unzGetCurrentFileInfo(currPos->archive.uf, &file_info, filename,
- sizeof(filename), NULL, 0, NULL, 0) == UNZ_OK) {
- if (unzOpenCurrentFile(currPos->archive.uf) == UNZ_OK) {
- classbuffer_size = file_info.uncompressed_size;
- classbuffer = MNEW(u1, classbuffer_size);
- classbuf_pos = classbuffer - 1;
- /*printf("classfile size: %d\n",file_info.uncompressed_size);*/
- if (unzReadCurrentFile(currPos->archive.uf, classbuffer, classbuffer_size) == classbuffer_size) {
- unzCloseCurrentFile(currPos->archive.uf);
- return true;
- } else {
- MFREE(classbuffer, u1, classbuffer_size);
+
+ if (unzGetCurrentFileInfo(cpi->uf, &file_info, filename,
+ sizeof(filename), NULL, 0, NULL, 0) == UNZ_OK) {
+ if (unzOpenCurrentFile(cpi->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;
+ cb->path = cpi->path;
+
+ len = unzReadCurrentFile(cpi->uf, cb->data, cb->size);
+
+ if (len != cb->size) {
+ suck_stop(cb);
log_text("Error while unzipping");
+
+ } else {
+ found = true;
}
- } else log_text("Error while opening file in archive");
- } else log_text("Error while retrieving fileinfo");
- }
- unzCloseCurrentFile(currPos->archive.uf);
- } else {
-#endif
- if ((currPos->filepath.pathlen+filenamelen)>=CLASSPATH_MAXFILENAME) continue;
- strcpy(currPos->filepath.filename+currPos->filepath.pathlen,filename);
- classfile = fopen(currPos->filepath.filename, "r");
- if (classfile) { /* file exists */
+ } else {
+ log_text("Error while opening file in archive");
+ }
- /* determine size of classfile */
+ } else {
+ log_text("Error while retrieving fileinfo");
+ }
+ }
+ unzCloseCurrentFile(cpi->uf);
- /* dolog("File: %s",filename); */
+#if defined(USE_THREADS)
+ /* leave the monitor */
- err = stat(currPos->filepath.filename, &buffer);
+ builtin_monitorexit((java_objectheader *) cpi);
+#endif
- if (!err) { /* read classfile data */
- classbuffer_size = buffer.st_size;
- classbuffer = MNEW(u1, classbuffer_size);
- classbuf_pos = classbuffer - 1;
- fread(classbuffer, 1, classbuffer_size, classfile);
- fclose(classfile);
- return true;
+ } else {
+#endif /* defined(USE_ZLIB) */
+
+ path = MNEW(char, cpi->pathlen + filenamelen);
+ strcpy(path, cpi->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;
+ cb->path = cpi->path;
+
+ /* 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;
+ }
}
}
-#ifdef USE_ZLIB
+
+ MFREE(path, char, cpi->pathlen + filenamelen);
+#if defined(USE_ZLIB)
}
#endif
}
- if (verbose) {
- dolog("Warning: Can not open class file '%s'", filename);
- }
+ if (opt_verbose)
+ if (!found) {
+ dolog("Warning: Can not open class file '%s'", filename);
+
+ if (strcmp(filename, "org/mortbay/util/MultiException.class") == 0) {
+ static int i = 0;
+ i++;
+ if (i == 3)
+ assert(0);
+ }
+ }
- return false;
+ MFREE(filename, char, filenamelen);
+ return cb;
}
+
/************************** function suck_stop *********************************
frees memory for buffer with classfile data.
*******************************************************************************/
-void suck_stop()
+void suck_stop(classbuffer *cb)
{
- /* determine amount of classdata not retrieved by suck-operations */
-
- int classdata_left = ((classbuffer + classbuffer_size) - classbuf_pos - 1);
-
- if (classdata_left > 0) {
- /* surplus */
- dolog("There are %d extra bytes at end of classfile",
- classdata_left);
- /* The JVM spec disallows extra bytes. */
- panic("Extra bytes at end of classfile");
- }
-
/* free memory */
- MFREE(classbuffer, u1, classbuffer_size);
- classbuffer = NULL;
+ MFREE(cb->data, u1, cb->size);
+ FREE(cb, classbuffer);
}
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: skipattribute *****************************
-
- skips a (1) 'attribute' structure in the class file
-
-*******************************************************************************/
-
-static void skipattribute()
-{
- u4 len;
- suck_u2 ();
- len = suck_u4();
- skip_nbytes(len);
+ fprintflags(stdout,f);
}
*******************************************************************************/
-static void skipattributebody()
+static bool skipattributebody(classbuffer *cb)
{
u4 len;
- len = suck_u4();
- skip_nbytes(len);
+
+ if (!check_classbuffer_size(cb, 4))
+ return false;
+
+ len = suck_u4(cb);
+
+ if (!check_classbuffer_size(cb, len))
+ return false;
+
+ skip_nbytes(cb, len);
+
+ return true;
}
*******************************************************************************/
-static void skipattributes(u4 num)
+static bool skipattributes(classbuffer *cb, u4 num)
{
u4 i;
- for (i = 0; i < num; i++)
- skipattribute();
-}
-
-
-/******************** function: innerclass_getconstant ************************
+ u4 len;
- like class_getconstant, but if cptags is ZERO null is returned
-
-*******************************************************************************/
+ for (i = 0; i < num; i++) {
+ if (!check_classbuffer_size(cb, 2 + 4))
+ return false;
-voidptr innerclass_getconstant(classinfo *c, u4 pos, u4 ctype)
-{
- /* invalid position in constantpool */
- if (pos >= c->cpcount)
- panic("Attempt to access constant outside range");
+ suck_u2(cb);
+ len = suck_u4(cb);
- /* constantpool entry of type 0 */
- if (!c->cptags[pos])
- return NULL;
+ if (!check_classbuffer_size(cb, len))
+ return false;
- /* check type of constantpool entry */
- if (c->cptags[pos] != ctype) {
- error("Type mismatch on constant: %d requested, %d here (innerclass_getconstant)",
- (int) ctype, (int) c->cptags[pos] );
+ skip_nbytes(cb, len);
}
-
- return c->cpinfos[pos];
+
+ return true;
}
-/************************ function: attribute_load ****************************
+/* load_constantpool ***********************************************************
+
+ 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).
- read attributes from classfile
-
*******************************************************************************/
-static void attribute_load(u4 num, classinfo *c)
+static bool load_constantpool(classbuffer *cb, descriptor_pool *descpool)
{
- u4 i, j;
- for (i = 0; i < num; i++) {
- /* retrieve attribute name */
- utf *aname = class_getconstant(c, suck_u2(), CONSTANT_Utf8);
+ /* 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;
- if (aname == utf_innerclasses) {
- /* innerclasses attribute */
+ /* CONSTANT_String */
+ typedef struct forward_string {
+ struct forward_string *next;
+ u2 thisindex;
+ u2 string_index;
+ } forward_string;
- if (c->innerclass != NULL)
- panic("Class has more than one InnerClasses attribute");
-
- /* skip attribute length */
- suck_u4();
- /* number of records */
- c->innerclasscount = suck_u2();
- /* allocate memory for innerclass structure */
- c->innerclass = MNEW(innerclassinfo, c->innerclasscount);
+ /* CONSTANT_NameAndType */
+ typedef struct forward_nameandtype {
+ struct forward_nameandtype *next;
+ u2 thisindex;
+ u2 name_index;
+ u2 sig_index;
+ } forward_nameandtype;
- 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;
+ /* 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;
- info->inner_class = innerclass_getconstant(c, suck_u2(), CONSTANT_Class); /* CONSTANT_Class_info index */
- info->outer_class = innerclass_getconstant(c, suck_u2(), CONSTANT_Class); /* CONSTANT_Class_info index */
- info->name = innerclass_getconstant(c, suck_u2(), CONSTANT_Utf8); /* CONSTANT_Utf8_info index */
- info->flags = suck_u2(); /* access_flags bitmask */
- }
- } else {
- /* unknown attribute */
- skipattributebody();
- }
- }
-}
+ classinfo *c;
+ u4 idx;
+ forward_class *forward_classes = NULL;
+ forward_string *forward_strings = NULL;
+ forward_nameandtype *forward_nameandtypes = NULL;
+ forward_fieldmethint *forward_fieldmethints = NULL;
-/******************* function: checkfielddescriptor ****************************
+ forward_class *nfc;
+ forward_string *nfs;
+ forward_nameandtype *nfn;
+ forward_fieldmethint *nff;
- checks whether a field-descriptor is valid and aborts otherwise
- all referenced classes are inserted into the list of unloaded classes
-
-*******************************************************************************/
+ u4 cpcount;
+ u1 *cptags;
+ voidptr *cpinfos;
-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");
- }
+ c = cb->class;
+
+ /* 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;
+ }
- /* exceeding characters */
- if (utf_ptr!=end_pos) panic ("descriptor has exceeding chars");
+#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;
-/******************* function checkmethoddescriptor ****************************
+ /* get constant type */
+ if (!check_classbuffer_size(cb, 1))
+ return false;
- checks whether a method-descriptor is valid and aborts otherwise.
- All referenced classes are inserted into the list of unloaded classes.
+ t = suck_u1(cb);
- The number of arguments is returned. A long or double argument is counted
- as two arguments.
-
-*******************************************************************************/
+ switch (t) {
+ case CONSTANT_Class:
+ nfc = DNEW(forward_class);
-static int checkmethoddescriptor (utf *d)
-{
- char *utf_ptr = d->text; /* current position in utf text */
- char *end_pos = utf_end(d); /* points behind utf string */
- int argcount = 0; /* number of arguments */
+ nfc->next = forward_classes;
+ forward_classes = nfc;
- /* method descriptor must start with parenthesis */
- if (utf_ptr == end_pos || *utf_ptr++ != '(') panic ("Missing '(' in method descriptor");
+ nfc->thisindex = idx;
+ /* reference to CONSTANT_NameAndType */
+ if (!check_classbuffer_size(cb, 2))
+ return false;
- /* 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);
- }
+ nfc->name_index = suck_u2(cb);
+
+ idx++;
+ break;
+
+ case CONSTANT_String:
+ nfs = DNEW(forward_string);
+
+ nfs->next = forward_strings;
+ forward_strings = nfs;
+
+ nfs->thisindex = idx;
- if (utf_ptr == end_pos) panic("Missing ')' in method descriptor");
- utf_ptr++; /* skip ')' */
+ /* reference to CONSTANT_Utf8_info with string characters */
+ if (!check_classbuffer_size(cb, 2))
+ return false;
- class_from_descriptor(utf_ptr,end_pos,NULL,
- CLASSLOAD_NEW
- | CLASSLOAD_NULLPRIMITIVE
- | CLASSLOAD_CHECKEND);
+ nfs->string_index = suck_u2(cb);
+
+ idx++;
+ break;
- if (argcount > 255)
- panic("Invalid method descriptor: too many arguments");
+ case CONSTANT_NameAndType:
+ nfn = DNEW(forward_nameandtype);
+
+ nfn->next = forward_nameandtypes;
+ forward_nameandtypes = nfn;
+
+ nfn->thisindex = idx;
- return argcount;
+ if (!check_classbuffer_size(cb, 2 + 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 */
+ /* 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 = DNEW(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))
+ 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
- case '[':
- case 'L':
- if (!class_from_descriptor(start,end_pos,&utf_ptr,CLASSLOAD_NEW))
- panic ("Ill formed method descriptor");
+ 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;
+ }
- default:
- panic ("Ill formed methodtype-descriptor");
+ 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))) {
+ *exceptionptr = new_classformaterror(c,"Invalid UTF-8 string");
+ return false;
+ }
+ /* 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 (!name)
+ return false;
+
+ if (opt_verify && !is_valid_name_utf(name)) {
+ *exceptionptr =
+ new_classformaterror(c, "Class reference with invalid name");
+ return false;
}
+
+ /* add all class references to the descriptor_pool */
+
+ if (!descriptor_pool_add_class(descpool, name))
+ return false;
+
+ cptags[forward_classes->thisindex] = CONSTANT_Class;
+
+ if (opt_eager) {
+ classinfo *tc;
+
+ if (!(tc = load_class_bootstrap(name)))
+ return false;
+
+ /* 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;
+
+ nfc = forward_classes;
+ forward_classes = forward_classes->next;
}
- /* check returntype */
- if (*utf_ptr=='V') {
- /* returntype void */
- if ((utf_ptr+1) != end_pos) panic ("Method-descriptor has exceeding chars");
+ 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;
}
- else
- /* treat as field-descriptor */
- checkfielddescriptor (utf_ptr,end_pos);
+
+ 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);
+ if (!cn->name)
+ return false;
+
+ cn->descriptor = class_getconstant(c,
+ forward_nameandtypes->sig_index,
+ CONSTANT_Utf8);
+ if (!cn->descriptor)
+ return false;
+
+ if (opt_verify) {
+ /* check name */
+ if (!is_valid_name_utf(cn->name)) {
+ *exceptionptr =
+ new_classformaterror(c,
+ "Illegal Field name \"%s\"",
+ cn->name->text);
-/***************** Function: print_arraydescriptor ****************************
+ return false;
+ }
- Debugging helper for displaying an arraydescriptor
-
-*******************************************************************************/
+ /* disallow referencing <clinit> among others */
+ if (cn->name->text[0] == '<' && cn->name != utf_init) {
+ *exceptionptr =
+ new_classformaterror(c,"Illegal reference to special method");
+ return false;
+ }
+ }
-void print_arraydescriptor(FILE *file, arraydescriptor *desc)
-{
- if (!desc) {
- fprintf(file, "<NULL>");
- return;
+ cptags[forward_nameandtypes->thisindex] = CONSTANT_NameAndType;
+ cpinfos[forward_nameandtypes->thisindex] = cn;
+
+ nfn = forward_nameandtypes;
+ forward_nameandtypes = forward_nameandtypes->next;
}
- fprintf(file, "{");
- if (desc->componentvftbl) {
- if (desc->componentvftbl->class)
- utf_fprint(file, desc->componentvftbl->class->name);
- else
- fprintf(file, "<no classinfo>");
+ 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);
+ if (!nat)
+ return false;
+
+ /* add all descriptors in {Field,Method}ref to the descriptor_pool */
+
+ if (!descriptor_pool_add(descpool, nat->descriptor, NULL))
+ return false;
+
+ /* the classref is created later */
+
+ fmi->classref = (constant_classref *) (size_t) forward_fieldmethints->class_index;
+ fmi->name = nat->name;
+ fmi->descriptor = nat->descriptor;
+
+ cptags[forward_fieldmethints->thisindex] = forward_fieldmethints->tag;
+ cpinfos[forward_fieldmethints->thisindex] = fmi;
+
+ nff = forward_fieldmethints;
+ forward_fieldmethints = forward_fieldmethints->next;
}
- 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);
-}
+ /* everything was ok */
-/******************************************************************************/
-/************************** Functions for fields ****************************/
-/******************************************************************************/
+ return true;
+}
-/************************ Function: field_load *********************************
+/* load_field ******************************************************************
- Load everything about a class field from the class file and fill a
- 'fieldinfo' structure. For static fields, space in the data segment is
- allocated.
+ Load everything about a class field from the class file and fill a
+ 'fieldinfo' structure. For static fields, space in the data segment
+ is allocated.
*******************************************************************************/
#define field_load_NOVALUE 0xffffffff /* must be bigger than any u2 value! */
-static void field_load(fieldinfo *f, classinfo *c)
+static bool load_field(classbuffer *cb, fieldinfo *f, descriptor_pool *descpool)
{
- u4 attrnum,i;
+ classinfo *c;
+ u4 attrnum, i;
u4 jtype;
- u4 pindex = field_load_NOVALUE; /* constantvalue_index */
+ u4 pindex = field_load_NOVALUE; /* constantvalue_index */
+ utf *u;
+
+ c = cb->class;
+
+ if (!check_classbuffer_size(cb, 2 + 2 + 2))
+ return false;
+
+ f->flags = suck_u2(cb);
+
+ if (!(u = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
+
+ f->name = u;
+
+ if (!(u = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
+
+ f->descriptor = u;
+ f->parseddesc = NULL;
+
+ if (!descriptor_pool_add(descpool, u, NULL))
+ return false;
+
+ /* descriptor_pool_add accepts method descriptors, so we have to check */
+ /* against them here before the call of desc_to_type below. */
+ if (u->text[0] == '(') {
+ *exceptionptr = new_classformaterror(c,"Method descriptor used for field");
+ return false;
+ }
- f->flags = suck_u2(); /* ACC flags */
- f->name = class_getconstant(c, suck_u2(), CONSTANT_Utf8); /* name of field */
- f->descriptor = class_getconstant(c, suck_u2(), CONSTANT_Utf8); /* JavaVM descriptor */
-
if (opt_verify) {
/* check name */
- if (!is_valid_name_utf(f->name) || f->name->text[0] == '<')
- panic("Field with invalid name");
-
+ if (!is_valid_name_utf(f->name) || f->name->text[0] == '<') {
+ *exceptionptr = new_classformaterror(c,
+ "Illegal Field name \"%s\"",
+ f->name->text);
+ return false;
+ }
+
/* check flag consistency */
- i = (f->flags & (ACC_PUBLIC | ACC_PRIVATE | ACC_PROTECTED));
- if (i != 0 && i != ACC_PUBLIC && i != ACC_PRIVATE && i != ACC_PROTECTED)
- panic("Field has invalid access flags");
- if ((f->flags & (ACC_FINAL | ACC_VOLATILE)) == (ACC_FINAL | ACC_VOLATILE))
- panic("Field is declared final and volatile");
- if ((c->flags & ACC_INTERFACE) != 0) {
- if ((f->flags & (ACC_STATIC | ACC_PUBLIC | ACC_FINAL))
- != (ACC_STATIC | ACC_PUBLIC | ACC_FINAL))
- panic("Interface field is not declared static final public");
- if ((f->flags & ACC_TRANSIENT) != 0)
- panic("Interface field declared transient");
+ i = f->flags & (ACC_PUBLIC | ACC_PRIVATE | ACC_PROTECTED);
+
+ if ((i != 0 && i != ACC_PUBLIC && i != ACC_PRIVATE && i != ACC_PROTECTED) ||
+ ((f->flags & (ACC_FINAL | ACC_VOLATILE)) == (ACC_FINAL | ACC_VOLATILE))) {
+ *exceptionptr =
+ new_classformaterror(c,
+ "Illegal field modifiers: 0x%X",
+ f->flags);
+ return false;
}
- /* check descriptor */
- checkfielddescriptor(f->descriptor->text,utf_end(f->descriptor));
+ if (c->flags & ACC_INTERFACE) {
+ if (((f->flags & (ACC_STATIC | ACC_PUBLIC | ACC_FINAL))
+ != (ACC_STATIC | ACC_PUBLIC | ACC_FINAL)) ||
+ f->flags & ACC_TRANSIENT) {
+ *exceptionptr =
+ new_classformaterror(c,
+ "Illegal field modifiers: 0x%X",
+ f->flags);
+ return false;
+ }
+ }
}
- f->type = jtype = desc_to_type(f->descriptor); /* data type */
- f->offset = 0; /* offset from start of object */
+ 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_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;
}
/* read attributes */
- attrnum = suck_u2();
+ 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;
- aname = class_getconstant(c, suck_u2(), CONSTANT_Utf8);
-
- if (aname != utf_constantvalue) {
- /* unknown attribute */
- skipattributebody();
+ if (!(u = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
- } else {
- /* constant value attribute */
+ if (u == utf_ConstantValue) {
+ if (!check_classbuffer_size(cb, 4 + 2))
+ return false;
- if (pindex != field_load_NOVALUE)
- panic("Field has more than one ConstantValue attribute");
-
/* check attribute length */
- if (suck_u4() != 2)
- panic("ConstantValue attribute has invalid 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();
+ pindex = suck_u2(cb);
/* initialize field with value from constantpool */
switch (jtype) {
case TYPE_INT: {
- constant_integer *ci =
- class_getconstant(c, pindex, CONSTANT_Integer);
+ constant_integer *ci;
+
+ if (!(ci = class_getconstant(c, pindex, CONSTANT_Integer)))
+ return false;
+
f->value.i = ci->value;
}
break;
case TYPE_LONG: {
- constant_long *cl =
- class_getconstant(c, pindex, CONSTANT_Long);
+ 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 =
- class_getconstant(c, pindex, CONSTANT_Float);
+ constant_float *cf;
+
+ if (!(cf = class_getconstant(c, pindex, CONSTANT_Float)))
+ return false;
+
f->value.f = cf->value;
}
break;
case TYPE_DOUBLE: {
- constant_double *cd =
- class_getconstant(c, pindex, CONSTANT_Double);
+ constant_double *cd;
+
+ if (!(cd = class_getconstant(c, pindex, CONSTANT_Double)))
+ return false;
+
f->value.d = cd->value;
}
break;
- case TYPE_ADDRESS: {
- utf *u = class_getconstant(c, pindex, CONSTANT_String);
- /* create javastring from compressed utf8-string */
+ 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;
+ break;
default:
- log_text ("Invalid Constant - Type");
+ log_text("Invalid Constant - Type");
}
+
+ } else {
+ /* unknown attribute */
+ if (!skipattributebody(cb))
+ return false;
}
}
-}
+ /* everything was ok */
-/********************** function: field_free **********************************/
-
-static void field_free (fieldinfo *f)
-{
- /* empty */
+ return true;
}
-/**************** Function: field_display (debugging only) ********************/
+/* load_method *****************************************************************
-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));
-}
+ 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 load_method(classbuffer *cb, methodinfo *m, descriptor_pool *descpool)
+{
+ classinfo *c;
+ int argcount;
+ s4 i, j;
+ u4 attrnum;
+ u4 codeattrnum;
+ utf *u;
-/******************************************************************************/
-/************************* Functions for methods ******************************/
-/******************************************************************************/
+ c = cb->class;
+#if defined(USE_THREADS) && defined(NATIVE_THREADS)
+ initObjectLock(&m->header);
+#endif
-/*********************** Function: method_load *********************************
+#ifdef STATISTICS
+ if (opt_stat)
+ count_all_methods++;
+#endif
- 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.
+ 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;
-static void method_load(methodinfo *m, classinfo *c)
-{
- u4 attrnum, i, e;
- int argcount;
-
-#ifdef STATISTICS
- count_all_methods++;
-#endif
- m->thrownexceptionscount=0;
- m->linenumbercount=0;
- m->linenumbers=0;
- m->class = c;
-
- m->flags = suck_u2();
- m->name = class_getconstant(c, suck_u2(), CONSTANT_Utf8);
+ 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;
+ m->parseddesc = NULL;
+
+ if (!descriptor_pool_add(descpool, u, &argcount))
+ return false;
if (opt_verify) {
- if (!is_valid_name_utf(m->name))
- panic("Method with invalid name");
- if (m->name->text[0] == '<'
- && m->name != utf_init && m->name != utf_clinit)
- panic("Method with invalid special name");
+ if (!is_valid_name_utf(m->name)) {
+ *exceptionptr = new_classformaterror(c,"Method with invalid name");
+ return false;
+ }
+
+ if (m->name->text[0] == '<' &&
+ m->name != utf_init && m->name != utf_clinit) {
+ *exceptionptr = new_classformaterror(c,"Method with invalid special name");
+ return false;
+ }
}
- m->descriptor = class_getconstant(c, suck_u2(), CONSTANT_Utf8);
- argcount = checkmethoddescriptor(m->descriptor);
- if ((m->flags & ACC_STATIC) == 0)
+ if (!(m->flags & ACC_STATIC))
argcount++; /* count the 'this' argument */
if (opt_verify) {
- if (argcount > 255)
- panic("Method has more than 255 arguments");
+ 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)
- panic("Method has invalid access flags");
- if ((m->flags & ACC_ABSTRACT) != 0) {
- if ((m->flags & (ACC_FINAL | ACC_NATIVE | ACC_PRIVATE | ACC_STATIC
- | ACC_STRICT | ACC_SYNCHRONIZED)) != 0)
- panic("Abstract method has invalid flags set");
+
+ 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) != 0) {
- if ((m->flags & (ACC_ABSTRACT | ACC_PUBLIC))
- != (ACC_ABSTRACT | ACC_PUBLIC))
- panic("Interface method is not declared abstract and public");
+
+ 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)) != 0)
- panic("Instance initialization method has invalid flags set");
+ if (m->flags & (ACC_STATIC | ACC_FINAL | ACC_SYNCHRONIZED |
+ ACC_NATIVE | ACC_ABSTRACT)) {
+ *exceptionptr = new_classformaterror(c,
+ "Instance initialization method has invalid flags set");
+ return false;
+ }
}
}
}
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->entrypoint = NULL;
- m->mcode = 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 {
- functionptr f = native_findfunction(c->name, m->name, m->descriptor,
- (m->flags & ACC_STATIC) != 0);
- if (f) {
- m->stubroutine = createnativestub(f, m);
- }
- }
-
+ if (!check_classbuffer_size(cb, 2))
+ return false;
- attrnum = suck_u2();
+ attrnum = suck_u2(cb);
for (i = 0; i < attrnum; i++) {
utf *aname;
- aname = class_getconstant(c, suck_u2(), CONSTANT_Utf8);
-
- if (aname != utf_code) {
- if (aname == utf_exceptions) {
- u2 exceptionCount;
- u2 exceptionID;
- suck_u4(); /*length*/
- exceptionCount=suck_u2();
- m->thrownexceptionscount=exceptionCount;
- m->thrownexceptions=MNEW(classinfo*,exceptionCount);
- for (exceptionID=0;exceptionID<exceptionCount;exceptionID++) {
- (m->thrownexceptions)[exceptionID]=class_getconstant(c,suck_u2(),CONSTANT_Class);
- }
+ 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;
}
- else
- skipattributebody();
+
+ if (m->jcode) {
+ *exceptionptr =
+ new_classformaterror(c, "Multiple Code attributes");
- } else {
- u4 codelen;
- if ((m->flags & (ACC_ABSTRACT | ACC_NATIVE)) != 0)
- panic("Code attribute for native or abstract method");
+ 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 (m->jcode)
- panic("Method has more than one Code attribute");
-
- suck_u4();
- m->maxstack = suck_u2();
- m->maxlocals = suck_u2();
- if (m->maxlocals < argcount)
- panic("max_locals is smaller than the number of arguments");
+ 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;
+ }
- codelen = suck_u4();
- if (codelen == 0)
- panic("bytecode has zero length");
- if (codelen > 65536)
- panic("bytecode too long");
- m->jcodelength = codelen;
+ 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, m->jcodelength);
- m->exceptiontablelength = suck_u2();
- m->exceptiontable =
- MNEW(exceptiontable, m->exceptiontablelength);
+ suck_nbytes(m->jcode, cb, m->jcodelength);
-#ifdef STATISTICS
- count_vmcode_len += m->jcodelength + 18;
- count_extable_len += 8 * m->exceptiontablelength;
+ if (!check_classbuffer_size(cb, 2))
+ return false;
+
+ m->exceptiontablelength = suck_u2(cb);
+ if (!check_classbuffer_size(cb, (2 + 2 + 2 + 2) * m->exceptiontablelength))
+ return false;
+
+ m->exceptiontable = MNEW(exceptiontable, m->exceptiontablelength);
+
+#if defined(STATISTICS)
+ if (opt_stat) {
+ count_vmcode_len += m->jcodelength + 18;
+ count_extable_len += 8 * m->exceptiontablelength;
+ }
#endif
- for (e = 0; e < m->exceptiontablelength; e++) {
+ for (j = 0; j < m->exceptiontablelength; j++) {
u4 idx;
- m->exceptiontable[e].startpc = suck_u2();
- m->exceptiontable[e].endpc = suck_u2();
- m->exceptiontable[e].handlerpc = suck_u2();
+ m->exceptiontable[j].startpc = suck_u2(cb);
+ m->exceptiontable[j].endpc = suck_u2(cb);
+ m->exceptiontable[j].handlerpc = suck_u2(cb);
- idx = suck_u2();
+ idx = suck_u2(cb);
if (!idx) {
- m->exceptiontable[e].catchtype = NULL;
+ m->exceptiontable[j].catchtype.any = NULL;
} else {
- m->exceptiontable[e].catchtype =
- class_getconstant(c, idx, CONSTANT_Class);
+ /* the classref is created later */
+ if (!(m->exceptiontable[j].catchtype.any =
+ (utf*)class_getconstant(c, idx, CONSTANT_Class)))
+ return false;
}
- }
- {
- u2 codeattrnum;
- for (codeattrnum=suck_u2();codeattrnum>0;codeattrnum--) {
- utf * caname = class_getconstant(c, suck_u2(), CONSTANT_Utf8);
- if (caname==utf_linenumbertable) {
- u2 lncid;
- /*log_text("LineNumberTable found");*/
- suck_u4();
- m->linenumbercount=suck_u2();
- /*printf("length:%d\n",m->linenumbercount);*/
- m->linenumbers=MNEW(lineinfo,m->linenumbercount);
- for (lncid=0;lncid<m->linenumbercount;lncid++) {
- m->linenumbers[lncid].start_pc=suck_u2();
- m->linenumbers[lncid].line_number=suck_u2();
- }
- codeattrnum--;
- skipattributes(codeattrnum);
- break;
- } else skipattributebody();
-
- }
}
- }
- }
- if (!m->jcode && (m->flags & (ACC_ABSTRACT | ACC_NATIVE)) == 0)
- panic("Method missing Code attribute");
-}
+ if (!check_classbuffer_size(cb, 2))
+ return false;
+ codeattrnum = suck_u2(cb);
-/********************* Function: method_free ***********************************
+ for (; codeattrnum > 0; codeattrnum--) {
+ utf *caname;
- frees all memory that was allocated for this method
+ if (!check_classbuffer_size(cb, 2))
+ return false;
-*******************************************************************************/
+ if (!(caname = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
-static void method_free(methodinfo *m)
-{
- if (m->jcode)
- MFREE(m->jcode, u1, m->jcodelength);
+ 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 (m->exceptiontable)
- MFREE(m->exceptiontable, exceptiontable, m->exceptiontablelength);
+ if (!check_classbuffer_size(cb, 4 + 2))
+ return false;
- if (m->mcode)
- CFREE(m->mcode, m->mcodelength);
+ suck_u4(cb); /* length */
+ m->thrownexceptionscount = suck_u2(cb);
- if (m->stubroutine) {
- if (m->flags & ACC_NATIVE) {
- removenativestub(m->stubroutine);
+ if (!check_classbuffer_size(cb, 2 * m->thrownexceptionscount))
+ return false;
+ m->thrownexceptions = MNEW(classref_or_classinfo, m->thrownexceptionscount);
+
+ 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 {
- removecompilerstub(m->stubroutine);
+ if (!skipattributebody(cb))
+ return false;
}
}
-}
+ if (!m->jcode && !(m->flags & (ACC_ABSTRACT | ACC_NATIVE))) {
+ *exceptionptr = new_classformaterror(c, "Missing Code attribute");
-/************** Function: method_display (debugging only) **************/
-
-void method_display(methodinfo *m)
-{
- printf(" ");
- printflags(m->flags);
- printf(" ");
- utf_display(m->name);
- printf(" ");
- utf_display(m->descriptor);
- printf("\n");
-}
+ return false;
+ }
-/************** Function: method_display_flags_last (debugging only) **************/
+ /* everything was ok */
-void method_display_flags_last(methodinfo *m)
-{
- printf(" ");
- utf_display(m->name);
- printf(" ");
- utf_display(m->descriptor);
- printf(" ");
- printflags(m->flags);
- printf("\n");
+ return true;
}
-/******************** Function: method_canoverwrite ****************************
+/* load_attribute **************************************************************
- Check if m and old are identical with respect to type and name. This means
- that old can be overwritten with m.
+ Read attributes from classfile.
-*******************************************************************************/
+*******************************************************************************/
-static bool method_canoverwrite (methodinfo *m, methodinfo *old)
+static bool load_attributes(classbuffer *cb, u4 num)
{
- if (m->name != old->name) return false;
- if (m->descriptor != old->descriptor) return false;
- if (m->flags & ACC_STATIC) return false;
- return true;
-}
+ classinfo *c;
+ utf *aname;
+ u4 i, j;
+ c = cb->class;
+ 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;
-/******************************************************************************/
-/************************ Functions for class *********************************/
-/******************************************************************************/
+ 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);
-/******************** function:: class_getconstant ******************************
+ /* number of records */
+ c->innerclasscount = suck_u2(cb);
- 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
+ if (!check_classbuffer_size(cb, (2 + 2 + 2 + 2) * c->innerclasscount))
+ return false;
-*******************************************************************************/
+ /* allocate memory for innerclass structure */
+ c->innerclass = MNEW(innerclassinfo, c->innerclasscount);
-voidptr class_getconstant(classinfo *c, u4 pos, u4 ctype)
-{
- /* invalid position in constantpool */
- /* (pos == 0 is caught by type comparison) */
- if (pos >= c->cpcount)
- panic("Attempt to access constant outside range");
+ 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;
- /* check type of constantpool entry */
+ 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);
+ }
- if (c->cptags[pos] != ctype) {
- class_showconstantpool(c);
- error("Type mismatch on constant: %d requested, %d here (class_getconstant)",
- (int) ctype, (int) c->cptags[pos]);
- }
-
- return c->cpinfos[pos];
-}
+ } 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;
+ }
-/********************* Function: class_constanttype ****************************
+ if (c->sourcefile) {
+ *exceptionptr =
+ new_classformaterror(c, "Multiple SourceFile attributes");
+ return false;
+ }
- Determines the type of a class entry in the ConstantPool
-
-*******************************************************************************/
+ if (!(c->sourcefile = class_getconstant(c, suck_u2(cb), CONSTANT_Utf8)))
+ return false;
-u4 class_constanttype(classinfo *c, u4 pos)
-{
- if (pos >= c->cpcount)
- panic("Attempt to access constant outside range");
+ } else {
+ /* unknown attribute */
+ if (!skipattributebody(cb))
+ return false;
+ }
+ }
- return c->cptags[pos];
+ return true;
}
-/******************** function: class_loadcpool ********************************
+/* load_class_from_sysloader ***************************************************
+
+ Load the class with the given name using the system class loader
+
+ IN:
+ name.............the classname
- 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)
+ RETURN VALUE:
+ the loaded class, or
+ NULL if an exception has been thrown
*******************************************************************************/
-static void class_loadcpool(classinfo *c)
+classinfo *load_class_from_sysloader(utf *name)
{
+ methodinfo *m;
+ java_objectheader *cl;
+ classinfo *r;
- /* 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_info entries */
- typedef struct forward_class {
- struct forward_class *next;
- u2 thisindex;
- u2 name_index;
- } forward_class;
-
- /* CONSTANT_String */
- typedef struct forward_string {
- struct forward_string *next;
- u2 thisindex;
- u2 string_index;
- } forward_string;
+#ifdef LOADER_VERBOSE
+ char logtext[MAXLOGTEXT];
+ LOADER_INDENT(logtext);
+ sprintf(logtext+strlen(logtext),"load_class_from_sysloader(");
+ utf_sprint(logtext+strlen(logtext),name);strcat(logtext,")");
+ log_text(logtext);
+#endif
- /* CONSTANT_NameAndType */
- typedef struct forward_nameandtype {
- struct forward_nameandtype *next;
- u2 thisindex;
- u2 name_index;
- u2 sig_index;
- } forward_nameandtype;
+ LOADER_ASSERT(class_java_lang_Object);
+ LOADER_ASSERT(class_java_lang_ClassLoader);
+ LOADER_ASSERT(class_java_lang_ClassLoader->linked);
+
+ m = class_resolveclassmethod(class_java_lang_ClassLoader,
+ utf_getSystemClassLoader,
+ utf_void__java_lang_ClassLoader,
+ class_java_lang_Object,
+ false);
- /* 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;
+ if (!m)
+ return false;
+ cl = (java_objectheader *) asm_calljavafunction(m, NULL, NULL, NULL, NULL);
+ if (!cl)
+ return false;
- u4 idx;
- long int dumpsize = dump_size ();
+ LOADER_INC();
+ r = load_class_from_classloader(name, cl);
+ LOADER_DEC();
- forward_class *forward_classes = NULL;
- forward_string *forward_strings = NULL;
- forward_nameandtype *forward_nameandtypes = NULL;
- forward_fieldmethint *forward_fieldmethints = NULL;
+ return r;
+}
- /* number of entries in the constant_pool table plus one */
- u4 cpcount = c -> cpcount = suck_u2();
- /* allocate memory */
- u1 *cptags = c -> cptags = MNEW (u1, cpcount);
- voidptr *cpinfos = c -> cpinfos = MNEW (voidptr, cpcount);
+/* load_class_from_classloader *************************************************
- if (!cpcount)
- panic("Invalid constant_pool_count (0)");
-
-#ifdef STATISTICS
- count_const_pool_len += (sizeof(voidptr) + 1) * cpcount;
-#endif
-
- /* initialize constantpool */
- for (idx=0; idx<cpcount; idx++) {
- cptags[idx] = CONSTANT_UNUSED;
- cpinfos[idx] = NULL;
- }
+ Load the class with the given name using the given user-defined class loader.
-
- /******* first pass *******/
- /* entries which cannot be resolved now are written into
- temporary structures and traversed again later */
-
- idx = 1;
- while (idx < cpcount) {
- /* get constant type */
- u4 t = suck_u1 ();
- switch ( t ) {
+ IN:
+ name.............the classname
+ cl...............user-defined class loader
+
+ RETURN VALUE:
+ the loaded class, or
+ NULL if an exception has been thrown
- case CONSTANT_Class: {
- forward_class *nfc = DNEW(forward_class);
+*******************************************************************************/
- nfc -> next = forward_classes;
- forward_classes = nfc;
+classinfo *load_class_from_classloader(utf *name, java_objectheader *cl)
+{
+ classinfo *r;
- nfc -> thisindex = idx;
- /* reference to CONSTANT_NameAndType */
- nfc -> name_index = suck_u2 ();
+#ifdef LOADER_VERBOSE
+ char logtext[MAXLOGTEXT];
+ LOADER_INDENT(logtext);
+ strcat(logtext,"load_class_from_classloader(");
+ utf_sprint(logtext+strlen(logtext),name);sprintf(logtext+strlen(logtext),",%p,",(void*)cl);
+ if (!cl) strcat(logtext,"<bootstrap>");
+ else if (cl->vftbl && cl->vftbl->class) utf_sprint(logtext+strlen(logtext),cl->vftbl->class->name);
+ else strcat(logtext,"<unknown class>");
+ strcat(logtext,")");
+ log_text(logtext);
+#endif
- idx++;
- break;
- }
-
- case CONSTANT_Fieldref:
- case CONSTANT_Methodref:
- case CONSTANT_InterfaceMethodref: {
- forward_fieldmethint *nff = DNEW (forward_fieldmethint);
-
- nff -> next = forward_fieldmethints;
- forward_fieldmethints = nff;
-
- nff -> thisindex = idx;
- /* constant type */
- nff -> tag = t;
- /* class or interface type that contains the declaration of the field or method */
- nff -> class_index = suck_u2 ();
- /* name and descriptor of the field or method */
- nff -> nameandtype_index = suck_u2 ();
-
- idx ++;
- break;
- }
-
- case CONSTANT_String: {
- forward_string *nfs = DNEW (forward_string);
-
- nfs -> next = forward_strings;
- forward_strings = nfs;
-
- nfs -> thisindex = idx;
- /* reference to CONSTANT_Utf8_info with string characters */
- nfs -> string_index = suck_u2 ();
-
- idx ++;
- break;
- }
+ LOADER_ASSERT(name);
- case CONSTANT_NameAndType: {
- forward_nameandtype *nfn = DNEW (forward_nameandtype);
-
- nfn -> next = forward_nameandtypes;
- forward_nameandtypes = nfn;
-
- nfn -> thisindex = idx;
- /* reference to CONSTANT_Utf8_info containing simple name */
- nfn -> name_index = suck_u2 ();
- /* reference to CONSTANT_Utf8_info containing field or method descriptor */
- nfn -> sig_index = suck_u2 ();
-
- idx ++;
- break;
- }
+ /* lookup if this class has already been loaded */
- case CONSTANT_Integer: {
- constant_integer *ci = NEW (constant_integer);
+ r = classcache_lookup(cl, name);
-#ifdef STATISTICS
- count_const_pool_len += sizeof(constant_integer);
+#ifdef LOADER_VERBOSE
+ if (r)
+ dolog(" cached -> %p",(void*)r);
#endif
- ci -> value = suck_s4 ();
- cptags [idx] = CONSTANT_Integer;
- cpinfos [idx] = ci;
- idx ++;
-
- break;
- }
-
- case CONSTANT_Float: {
- constant_float *cf = NEW (constant_float);
+ if (r)
+ return r;
-#ifdef STATISTICS
- count_const_pool_len += sizeof(constant_float);
-#endif
+ /* if other class loader than bootstrap, call it */
- cf -> value = suck_float ();
- cptags [idx] = CONSTANT_Float;
- cpinfos[idx] = cf;
- idx ++;
- break;
- }
-
- case CONSTANT_Long: {
- constant_long *cl = NEW(constant_long);
-
-#ifdef STATISTICS
- count_const_pool_len += sizeof(constant_long);
-#endif
+ if (cl) {
+ methodinfo *lc;
+ char *text;
+ s4 namelen;
- cl -> value = suck_s8 ();
- cptags [idx] = CONSTANT_Long;
- cpinfos [idx] = cl;
- idx += 2;
- if (idx > cpcount)
- panic("Long constant exceeds constant pool");
- break;
- }
-
- case CONSTANT_Double: {
- constant_double *cd = NEW(constant_double);
-
-#ifdef STATISTICS
- count_const_pool_len += sizeof(constant_double);
-#endif
+ text = name->text;
+ namelen = name->blength;
- cd -> value = suck_double ();
- cptags [idx] = CONSTANT_Double;
- cpinfos [idx] = cd;
- idx += 2;
- if (idx > cpcount)
- panic("Double constant exceeds constant pool");
- break;
- }
-
- case CONSTANT_Utf8: {
-
- /* number of bytes in the bytes array (not string-length) */
- u4 length = suck_u2();
- cptags [idx] = CONSTANT_Utf8;
- /* validate the string */
- ASSERT_LEFT(length);
- if (opt_verify &&
- !is_valid_utf(classbuf_pos+1, classbuf_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(classbuf_pos+1, length);
- /* skip bytes of the string */
- skip_nbytes(length);
- idx++;
- break;
+ /* 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_classnotfoundexception(name);
+ return false;
}
-
- default:
- error ("Unkown constant type: %d",(int) t);
-
- } /* end switch */
-
- } /* end while */
-
+ u = utf_new(text + 2, namelen - 3);
- /* resolve entries in temporary structures */
+ if (!(comp = load_class_from_classloader(u, cl)))
+ return false;
- while (forward_classes) {
- utf *name =
- class_getconstant (c, forward_classes -> name_index, CONSTANT_Utf8);
+ /* create the array class */
+ return class_array_of(comp, false);
- if (opt_verify && !is_valid_name_utf(name))
- panic("Class reference with invalid name");
+ case '[':
+ /* load the component class */
- cptags [forward_classes -> thisindex] = CONSTANT_Class;
- /* retrieve class from class-table */
- cpinfos [forward_classes -> thisindex] = class_new (name);
+ u = utf_new(text + 1, namelen - 1);
- forward_classes = forward_classes -> next;
-
- }
+ if (!(comp = load_class_from_classloader(u, cl)))
+ return false;
- while (forward_strings) {
- utf *text =
- class_getconstant (c, forward_strings -> string_index, CONSTANT_Utf8);
-/*
- log_text("forward_string:");
- printf( "classpoolid: %d\n",forward_strings -> thisindex);
- utf_display(text);
- log_text("\n------------------"); */
- /* resolve utf-string */
- cptags [forward_strings -> thisindex] = CONSTANT_String;
- cpinfos [forward_strings -> thisindex] = text;
-
- forward_strings = forward_strings -> next;
- }
+ /* create the array class */
+ return class_array_of(comp, false);
- while (forward_nameandtypes) {
- constant_nameandtype *cn = NEW (constant_nameandtype);
+ default:
+ /* primitive array classes are loaded by the bootstrap loader */
+ return load_class_bootstrap(name);
+ }
+ }
+
+ LOADER_ASSERT(class_java_lang_Object);
+
+ 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 */
+
+ LOADER_INC();
+ r = (classinfo *) asm_calljavafunction(lc,
+ cl,
+ javastring_new_slash_to_dot(name),
+ NULL, NULL);
+ LOADER_DEC();
+
+ if (r) {
+ /* 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. */
+
+ classinfo *c = classcache_store(cl,r,false);
+
+ if (c == NULL) {
+ /* exception, free the loaded class */
+ r->loaded = false;
+ class_free(r);
+ }
-#ifdef STATISTICS
- count_const_pool_len += sizeof(constant_nameandtype);
-#endif
+ r = c;
+ }
- /* 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);
+ /* SUN compatible -verbose:class output */
- 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");
+ if (opt_verboseclass && (r != NULL) && (r->classloader == cl)) {
+ printf("[Loaded ");
+ utf_display_classname(name);
+ printf("]\n");
}
- cptags [forward_nameandtypes -> thisindex] = CONSTANT_NameAndType;
- cpinfos [forward_nameandtypes -> thisindex] = cn;
-
- forward_nameandtypes = forward_nameandtypes -> next;
- }
+ return r;
+ }
+ LOADER_INC();
+ r = load_class_bootstrap(name);
+ LOADER_DEC();
- while (forward_fieldmethints) {
- constant_nameandtype *nat;
- constant_FMIref *fmi = NEW (constant_FMIref);
+ return r;
+}
-#ifdef STATISTICS
- count_const_pool_len += sizeof(constant_FMIref);
+
+/* load_class_bootstrap ********************************************************
+
+ Load the class with the given name using the bootstrap class loader.
+
+ IN:
+ name.............the classname
+
+ RETURN VALUE:
+ loaded classinfo, or
+ NULL if an exception has been thrown
+
+ SYNCHRONIZATION:
+ load_class_bootstrap is synchronized. It can be treated as an
+ atomic operation.
+
+*******************************************************************************/
+
+classinfo *load_class_bootstrap(utf *name)
+{
+ classbuffer *cb;
+ classinfo *c;
+ classinfo *r;
+#ifdef LOADER_VERBOSE
+ char logtext[MAXLOGTEXT];
#endif
- /* resolve simple name and descriptor */
- nat = class_getconstant
- (c, forward_fieldmethints -> nameandtype_index, CONSTANT_NameAndType);
-
-#ifdef JOWENN_DEBUG
- log_text("trying to resolve:");
- log_text(nat->name->text);
- switch(forward_fieldmethints ->tag) {
- case CONSTANT_Fieldref:
- log_text("CONSTANT_Fieldref");
- break;
- case CONSTANT_InterfaceMethodref:
- log_text("CONSTANT_InterfaceMethodref");
- break;
- case CONSTANT_Methodref:
- log_text("CONSTANT_Methodref");
- break;
- }
+
+ /* for debugging */
+
+ LOADER_ASSERT(name);
+ LOADER_INC();
+
+ /* lookup if this class has already been loaded */
+
+ if ((r = classcache_lookup(NULL, name)))
+ goto success;
+
+#ifdef LOADER_VERBOSE
+ LOADER_INDENT(logtext);
+ strcat(logtext,"load_class_bootstrap(");
+ utf_sprint(logtext+strlen(logtext),name);strcat(logtext,")");
+ log_text(logtext);
#endif
- fmi -> class = class_getconstant
- (c, forward_fieldmethints -> class_index, CONSTANT_Class);
- fmi -> name = nat -> name;
- fmi -> descriptor = nat -> descriptor;
- cptags [forward_fieldmethints -> thisindex] = forward_fieldmethints -> tag;
- cpinfos [forward_fieldmethints -> thisindex] = fmi;
+ /* create the classinfo */
+
+ c = class_create_classinfo(name);
- 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 (fmi->descriptor);
- break;
- }
+ /* handle array classes */
+
+ if (name->text[0] == '[') {
+ c = load_newly_created_array(c, NULL);
+ if (c == NULL)
+ goto return_exception;
+ LOADER_ASSERT(c->loaded);
+ r = c;
+ goto success;
+ }
+
+#if defined(STATISTICS)
+ /* measure time */
+
+ if (getcompilingtime)
+ compilingtime_stop();
+
+ if (getloadingtime)
+ loadingtime_start();
+#endif
+
+ /* load classdata, throw exception on error */
+
+ if ((cb = suck_start(c)) == NULL) {
+ /* this normally means, the classpath was not set properly */
+
+ if (name == utf_java_lang_Object)
+ throw_cacao_exception_exit(string_java_lang_NoClassDefFoundError,
+ "java/lang/Object");
+
+ *exceptionptr =
+ new_exception_utfmessage(string_java_lang_NoClassDefFoundError,
+ name);
+ goto return_exception;
+ }
- forward_fieldmethints = forward_fieldmethints -> next;
+ /* load the class from the buffer */
+
+ r = load_class_from_classbuffer(cb);
+
+ if (!r) {
+ /* the class could not be loaded, free the classinfo struct */
+
+ class_free(c);
+
+ } 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);
}
-/* class_showconstantpool(c); */
+ r = res;
+ }
+
+ /* SUN compatible -verbose:class output */
+
+ if (opt_verboseclass && r) {
+ printf("[Loaded ");
+ utf_display_classname(name);
+ printf(" from %s]\n", cb->path);
+ }
+
+ /* free memory */
+
+ suck_stop(cb);
+
+#if defined(STATISTICS)
+ /* measure time */
+
+ if (getloadingtime)
+ loadingtime_stop();
+
+ if (getcompilingtime)
+ compilingtime_start();
+#endif
+
+ if (!r)
+ goto return_exception;
+
+success:
+ LOADER_DEC();
+
+ return r;
- dump_release (dumpsize);
+return_exception:
+ LOADER_DEC();
+
+ return NULL;
}
-/********************** Function: class_load ***********************************
+/* load_class_from_classbuffer *************************************************
- Loads everything interesting about a class from the class file. The
- 'classinfo' structure must have been allocated previously.
+ 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 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'.
+ The loaded class is removed from the list 'unloadedclasses' and
+ added to the list 'unlinkedclasses'.
+ SYNCHRONIZATION:
+ This function is NOT synchronized!
+
*******************************************************************************/
-static int class_load(classinfo *c)
+classinfo *load_class_from_classbuffer(classbuffer *cb)
{
- u4 i;
- u4 mi,ma;
+ classinfo *c;
+ utf *name;
+ utf *supername;
+ u4 i,j;
+ u4 ma, mi;
+ s4 dumpsize;
+ descriptor_pool *descpool;
+#if defined(STATISTICS)
+ u4 classrefsize;
+ u4 descsize;
+#endif
+#ifdef LOADER_VERBOSE
+ char logtext[MAXLOGTEXT];
+#endif
-#ifdef STATISTICS
- count_class_loads++;
+ /* get the classbuffer's class */
+
+ c = cb->class;
+
+ /* maybe the class is already loaded */
+
+ if (c->loaded)
+ return c;
+
+#ifdef LOADER_VERBOSE
+ LOADER_INDENT(logtext);
+ strcat(logtext,"load_class_from_classbuffer(");
+ utf_sprint(logtext+strlen(logtext),c->name);strcat(logtext,")");
+ log_text(logtext);
+ LOADER_INC();
+#endif
+
+#if defined(STATISTICS)
+ if (opt_stat)
+ count_class_loads++;
#endif
/* output for debugging purposes */
- if (loadverbose) {
- char logtext[MAXLOGTEXT];
- sprintf(logtext, "Loading class: ");
- utf_sprint(logtext + strlen(logtext), c->name);
- log_text(logtext);
- }
+
+ if (loadverbose)
+ log_message_class("Loading class: ", c);
- /* load classdata, throw exception on error */
+ /* mark start of dump memory area */
- if (!suck_start(c->name)) {
- throw_noclassdeffounderror_message(c->name);
- return false;
+ dumpsize = dump_size();
+
+ /* class is somewhat loaded */
+
+ c->loaded = true;
+
+ if (!check_classbuffer_size(cb, 4 + 2 + 2))
+ goto return_exception;
+
+ /* check signature */
+
+ if (suck_u4(cb) != MAGIC) {
+ *exceptionptr = new_classformaterror(c, "Bad magic number");
+
+ goto return_exception;
}
-
- /* check signature */
- if (suck_u4() != MAGIC) panic("Can not find class-file signature");
+
/* check version */
- mi = suck_u2();
- ma = suck_u2();
- if (ma != MAJOR_VERSION && (ma != MAJOR_VERSION+1 || mi != 0)) {
- error("File version %d.%d is not supported", (int) ma, (int) mi);
+
+ 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);
+
+ goto return_exception;
}
- class_loadcpool(c);
+ /* create a new descriptor pool */
+
+ descpool = descriptor_pool_new(c);
+
+ /* load the constant pool */
+
+ if (!load_constantpool(cb, descpool))
+ goto return_exception;
+
/*JOWENN*/
c->erroneous_state = 0;
c->initializing_thread = 0;
c->impldBy = NULL;
/* ACC flags */
- c->flags = suck_u2();
- /*if (!(c->flags & ACC_PUBLIC)) { log_text("CLASS NOT PUBLIC"); } JOWENN*/
+
+ if (!check_classbuffer_size(cb, 2))
+ goto return_exception;
+
+ c->flags = suck_u2(cb);
/* check ACC flags consistency */
- if ((c->flags & ACC_INTERFACE) != 0) {
- if ((c->flags & ACC_ABSTRACT) == 0) {
+
+ 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)) != 0)
- panic("Interface class has invalid flags");
- if ((c->flags & (ACC_SUPER)) != 0)
+
+ if (c->flags & ACC_FINAL) {
+ *exceptionptr =
+ new_classformaterror(c,
+ "Illegal class modifiers: 0x%X", c->flags);
+
+ goto return_exception;
+ }
+
+ 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);
+
+ goto return_exception;
}
- if ((c->flags & (ACC_ABSTRACT | ACC_FINAL)) == (ACC_ABSTRACT | ACC_FINAL))
- panic("Class is declared both abstract and final");
+
+ if (!check_classbuffer_size(cb, 2 + 2))
+ goto return_exception;
/* this class */
- i = suck_u2();
- if (class_getconstant(c, i, CONSTANT_Class) != c)
- panic("Invalid this_class in class file");
+
+ i = suck_u2(cb);
+ if (!(name = (utf *) class_getconstant(c, i, CONSTANT_Class)))
+ goto return_exception;
+
+ if (c->name == utf_not_named_yet) {
+ /* we finally have a name for this class */
+ c->name = name;
+ class_set_packagename(c);
+
+ } else if (name != c->name) {
+ char *msg;
+ s4 msglen;
+
+ msglen = utf_strlen(c->name) + strlen(" (wrong name: ") +
+ utf_strlen(name) + strlen(")") + strlen("0");
+
+ msg = MNEW(char, msglen);
+
+ utf_sprint(msg, c->name);
+ strcat(msg, " (wrong name: ");
+ utf_strcat(msg, name);
+ strcat(msg, ")");
+
+ *exceptionptr =
+ new_exception_message(string_java_lang_NoClassDefFoundError, msg);
+
+ MFREE(msg, char, msglen);
+
+ goto return_exception;
+ }
/* retrieve superclass */
- if ((i = suck_u2())) {
- c->super = class_getconstant(c, i, CONSTANT_Class);
+
+ 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. */
- if (c->name == utf_java_lang_Object)
- panic("java.lang.Object with super class");
-
- /* Interfaces must have j.l.O as super class. */
- if ((c->flags & ACC_INTERFACE) != 0
- && c->super->name != utf_java_lang_Object)
- {
- panic("Interface with super class other than java.lang.Object");
+
+ if (c->name == utf_java_lang_Object) {
+ *exceptionptr =
+ new_exception_message(string_java_lang_ClassFormatError,
+ "java.lang.Object with superclass");
+
+ goto return_exception;
+ }
+
+ /* Interfaces must have java.lang.Object as super class. */
+
+ 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");
+
+ goto return_exception;
}
+
} else {
- c->super = NULL;
+ supername = NULL;
/* This is only allowed for java.lang.Object. */
- if (c->name != utf_java_lang_Object)
- panic("Class (not java.lang.Object) without super class");
+
+ if (c->name != utf_java_lang_Object) {
+ *exceptionptr = new_classformaterror(c, "Bad superclass index");
+
+ goto return_exception;
+ }
}
/* retrieve interfaces */
- c->interfacescount = suck_u2();
- c->interfaces = MNEW(classinfo*, c->interfacescount);
+
+ if (!check_classbuffer_size(cb, 2))
+ goto return_exception;
+
+ c->interfacescount = suck_u2(cb);
+
+ if (!check_classbuffer_size(cb, 2 * c->interfacescount))
+ goto return_exception;
+
+ c->interfaces = MNEW(classref_or_classinfo, c->interfacescount);
for (i = 0; i < c->interfacescount; i++) {
- c->interfaces [i] =
- class_getconstant(c, suck_u2(), CONSTANT_Class);
+ /* the classrefs are created later */
+ if (!(c->interfaces[i].any = (utf *) class_getconstant(c, suck_u2(cb), CONSTANT_Class)))
+ goto return_exception;
}
/* load fields */
- c->fieldscount = suck_u2();
-/* utf_display(c->name);
- printf(" ,Fieldscount: %d\n",c->fieldscount);*/
+ if (!check_classbuffer_size(cb, 2))
+ goto return_exception;
+ c->fieldscount = suck_u2(cb);
c->fields = GCNEW(fieldinfo, c->fieldscount);
+/* c->fields = MNEW(fieldinfo, c->fieldscount); */
for (i = 0; i < c->fieldscount; i++) {
- field_load(&(c->fields[i]), c);
+ if (!load_field(cb, &(c->fields[i]),descpool))
+ goto return_exception;
}
/* load methods */
- c->methodscount = suck_u2();
+ if (!check_classbuffer_size(cb, 2))
+ goto return_exception;
+
+ c->methodscount = suck_u2(cb);
+/* c->methods = GCNEW(methodinfo, c->methodscount); */
c->methods = MNEW(methodinfo, c->methodscount);
for (i = 0; i < c->methodscount; i++) {
- method_load(&(c->methods[i]), c);
+ if (!load_method(cb, &(c->methods[i]),descpool))
+ goto return_exception;
+ }
+
+ /* create the class reference table */
+
+ c->classrefs =
+ descriptor_pool_create_classrefs(descpool, &(c->classrefcount));
+
+ /* allocate space for the parsed descriptors */
+
+ descriptor_pool_alloc_parsed_descriptors(descpool);
+ c->parseddescs =
+ descriptor_pool_get_parsed_descriptors(descpool, &(c->parseddescsize));
+
+#if defined(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);
+ }
+ }
+
+ /* 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 */
+
+ 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;
+ }
+
+ /* parse field descriptors */
+
+ 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 */
+
+ 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 (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;
+ }
+
+ 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;
+ }
+ }
+
+ /* 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;
+ }
}
/* 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.
}
/* Check fields */
- memset(hashtab,0,sizeof(u2) * (hashlen + len));
- for (i = 0; i<c->fieldscount; ++i) {
+ memset(hashtab, 0, sizeof(u2) * (hashlen + len));
+
+ for (i = 0; i < c->fieldscount; ++i) {
fieldinfo *fi = c->fields + i;
+
/* It's ok if we lose bits here */
- index = ((((size_t)fi->name) + ((size_t)fi->descriptor)) >> shift)
- % hashlen;
- if ((old = hashtab[index]) != 0) {
+ index = ((((size_t) fi->name) +
+ ((size_t) fi->descriptor)) >> shift) % hashlen;
+
+ if ((old = hashtab[index])) {
old--;
- /* dolog("HASHHIT %d --> %d",index,old); */
next[i] = old;
do {
- /* dolog("HASHCHECK %d",old); */
- if (c->fields[old].name == fi->name
- && c->fields[old].descriptor == fi->descriptor)
- {
- dolog("Duplicate field (%d,%d):",i,old);
- log_utf(fi->name); log_utf(fi->descriptor);
- panic("Fields with same name and descriptor");
+ if (c->fields[old].name == fi->name &&
+ c->fields[old].descriptor == fi->descriptor) {
+ *exceptionptr =
+ new_classformaterror(c,
+ "Repetitive field name/signature");
+
+ goto return_exception;
}
- } while ((old = next[old]) != 0);
+ } while ((old = next[old]));
}
- /* else dolog("HASHLUCKY"); */
- hashtab[index] = i+1;
+ hashtab[index] = i + 1;
}
/* Check methods */
- memset(hashtab,0,sizeof(u2) * (hashlen + len));
- for (i = 0; i<c->methodscount; ++i) {
+ memset(hashtab, 0, sizeof(u2) * (hashlen + hashlen/5));
+
+ for (i = 0; i < c->methodscount; ++i) {
methodinfo *mi = c->methods + i;
+
/* It's ok if we lose bits here */
- index = ((((size_t)mi->name) + ((size_t)mi->descriptor)) >> shift)
- % hashlen;
- if ((old = hashtab[index]) != 0) {
+ index = ((((size_t) mi->name) +
+ ((size_t) mi->descriptor)) >> shift) % hashlen;
+
+ /*{ JOWENN
+ int dbg;
+ for (dbg=0;dbg<hashlen+hashlen/5;++dbg){
+ printf("Hash[%d]:%d\n",dbg,hashtab[dbg]);
+ }
+ }*/
+
+ if ((old = hashtab[index])) {
old--;
- /* dolog("HASHHIT %d --> %d",index,old); */
next[i] = old;
do {
- /* dolog("HASHCHECK %d",old); */
- if (c->methods[old].name == mi->name
- && c->methods[old].descriptor == mi->descriptor)
- {
- dolog("Duplicate method (%d,%d):",i,old);
- log_utf(mi->name); log_utf(mi->descriptor);
- panic("Methods with same name and descriptor");
+ if (c->methods[old].name == mi->name &&
+ c->methods[old].descriptor == mi->descriptor) {
+ *exceptionptr =
+ new_classformaterror(c,
+ "Repetitive method name/signature");
+
+ goto return_exception;
}
- } while ((old = next[old]) != 0);
+ } while ((old = next[old]));
}
- /* else dolog("HASHLUCKY"); */
- hashtab[index] = i+1;
+ hashtab[index] = i + 1;
}
- MFREE(hashtab,u2,(hashlen + len));
+ MFREE(hashtab, u2, (hashlen + len));
}
-#ifdef STATISTICS
- count_class_infos += sizeof(classinfo*) * c->interfacescount;
- count_class_infos += sizeof(fieldinfo) * c->fieldscount;
- count_class_infos += sizeof(methodinfo) * c->methodscount;
+#if defined(STATISTICS)
+ if (opt_stat) {
+ count_class_infos += sizeof(classinfo*) * c->interfacescount;
+ count_class_infos += sizeof(fieldinfo) * c->fieldscount;
+ count_class_infos += sizeof(methodinfo) * c->methodscount;
+ }
#endif
- /* load variable-length attribute structures */
- attribute_load(suck_u2(), c);
+ /* load attribute structures */
- /* free memory */
- suck_stop();
+ if (!check_classbuffer_size(cb, 2))
+ goto return_exception;
- /* remove class from list of unloaded classes and
- add to list of unlinked classes */
- list_remove(&unloadedclasses, c);
- list_addlast(&unlinkedclasses, c);
+ if (!load_attributes(cb, suck_u2(cb)))
+ goto return_exception;
- c->loaded = true;
+#if 0
+ /* Pre java 1.5 version don't check this. This implementation is like
+ java 1.5 do it: for class file version 45.3 we don't check it, older
+ versions are checked.
+ */
+ if ((ma == 45 && mi > 3) || ma > 45) {
+ /* check if all data has been read */
+ s4 classdata_left = ((cb->data + cb->size) - cb->pos - 1);
+
+ if (classdata_left > 0) {
+ *exceptionptr =
+ new_classformaterror(c, "Extra bytes at the end of class file");
+ goto return_exception;
+ }
+ }
+#endif
- return true;
+ /* release dump area */
+
+ dump_release(dumpsize);
+
+ if (loadverbose)
+ log_message_class("Loading done class: ", c);
+
+ LOADER_DEC();
+ return c;
+
+return_exception:
+ /* release dump area */
+
+ dump_release(dumpsize);
+
+ /* an exception has been thrown */
+
+ LOADER_DEC();
+ return NULL;
}
+/* load_newly_created_array ****************************************************
+
+ Load a newly created array class.
-/************** internal Function: class_highestinterface ***********************
+ 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
- Used by the function class_link to determine the amount of memory needed
- for the interface table.
+ Note:
+ This is an internal function. Do not use it unless you know exactly
+ what you are doing!
+
+ Use one of the load_class_... functions for general array class loading.
*******************************************************************************/
-static s4 class_highestinterface(classinfo *c)
-{
- s4 h;
- s4 i;
-
- if (!(c->flags & ACC_INTERFACE)) {
- char logtext[MAXLOGTEXT];
- sprintf(logtext, "Interface-methods count requested for non-interface: ");
- utf_sprint(logtext + strlen(logtext), c->name);
- error("%s",logtext);
- }
-
- h = c->index;
- for (i = 0; i < c->interfacescount; i++) {
- s4 h2 = class_highestinterface(c->interfaces[i]);
- if (h2 > h) h = h2;
- }
+classinfo *load_newly_created_array(classinfo *c, java_objectheader *loader)
+{
+ classinfo *comp = NULL;
+ methodinfo *clone;
+ methoddesc *clonedesc;
+ constant_classref *classrefs;
+ char *text;
+ s4 namelen;
+ utf *u;
+
+#ifdef LOADER_VERBOSE
+ char logtext[MAXLOGTEXT];
+ LOADER_INDENT(logtext);
+ strcat(logtext,"load_newly_created_array(");utf_sprint_classname(logtext+strlen(logtext),c->name);
+ sprintf(logtext+strlen(logtext),") loader=%p",loader);
+ log_text(logtext);
+#endif
- return h;
-}
+ text = c->name->text;
+ namelen = c->name->blength;
+ /* Check array class name */
-/* class_addinterface **********************************************************
+ if (namelen < 2 || text[0] != '[') {
+ *exceptionptr = new_classnotfoundexception(c->name);
+ return NULL;
+ }
- Is needed by class_link for adding a VTBL to a class. All interfaces
- implemented by ic are added as well.
+ /* Check the element type */
-*******************************************************************************/
+ switch (text[1]) {
+ case '[':
+ /* c is an array of arrays. We have to create the component class. */
-static void class_addinterface (classinfo *c, classinfo *ic)
-{
- s4 j, m;
- s4 i = ic->index;
- vftbl *vftbl = c->vftbl;
-
- if (i >= vftbl->interfacetablelength)
- panic ("Inernal error: interfacetable overflow");
- if (vftbl->interfacetable[-i])
- return;
-
- if (ic->methodscount == 0) { /* fake entry needed for subtype test */
- vftbl->interfacevftbllength[i] = 1;
- vftbl->interfacetable[-i] = MNEW(methodptr, 1);
- vftbl->interfacetable[-i][0] = NULL;
+ u = utf_new_intern(text + 1, namelen - 1);
+ LOADER_INC();
+ if (!(comp = load_class_from_classloader(u, loader))) {
+ LOADER_DEC();
+ return NULL;
+ }
+ LOADER_DEC();
+ LOADER_ASSERT(comp->loaded);
+ 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;
+
+ case 'L':
+ /* c is an array of objects. */
+
+ /* check for cases like `[L;' or `[L[I;' or `[Ljava.lang.Object' */
+ if (namelen < 4 || text[2] == '[' || text[namelen - 1] != ';') {
+ *exceptionptr = new_classnotfoundexception(c->name);
+ return NULL;
}
- else {
- vftbl->interfacevftbllength[i] = ic->methodscount;
- vftbl->interfacetable[-i] = MNEW(methodptr, ic->methodscount);
-#ifdef STATISTICS
- count_vftbl_len += sizeof(methodptr) *
- (ic->methodscount + (ic->methodscount == 0));
-#endif
+ u = utf_new_intern(text + 2, namelen - 3);
- for (j=0; j<ic->methodscount; j++) {
- classinfo *sc = c;
- while (sc) {
- for (m = 0; m < sc->methodscount; m++) {
- methodinfo *mi = &(sc->methods[m]);
- if (method_canoverwrite(mi, &(ic->methods[j]))) {
- vftbl->interfacetable[-i][j] =
- vftbl->table[mi->vftblindex];
- goto foundmethod;
- }
- }
- sc = sc->super;
- }
- foundmethod: ;
- }
+ LOADER_INC();
+ if (!(comp = load_class_from_classloader(u, loader))) {
+ LOADER_DEC();
+ return NULL;
}
+ LOADER_DEC();
+ LOADER_ASSERT(comp->loaded);
+ 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;
+
+ default:
+ /* c is an array of a primitive type */
- for (j = 0; j < ic->interfacescount; j++)
- class_addinterface(c, ic->interfaces[j]);
-}
-
+ /* check for cases like `[II' */
+ if (namelen > 2) {
+ *exceptionptr = new_classnotfoundexception(c->name);
+ return NULL;
+ }
-/******************* Function: class_new_array *********************************
+ /* the accessibility of the array class is public (VM Spec 5.3.3) */
+ c->flags = ACC_PUBLIC | ACC_FINAL | ACC_ABSTRACT;
+ c->classloader = NULL;
+ }
- This function is called by class_new to setup an array class.
+ LOADER_ASSERT(class_java_lang_Object);
+ LOADER_ASSERT(class_java_lang_Cloneable);
+ LOADER_ASSERT(class_java_io_Serializable);
-*******************************************************************************/
+ /* setup the array class */
-void class_new_array(classinfo *c)
-{
- classinfo *comp = NULL;
- methodinfo *clone;
- int namelen;
+ c->super.cls = class_java_lang_Object;
- /* DEBUG */ /* dolog("class_new_array: %s",c->name->text); */
+ c->interfacescount = 2;
+ c->interfaces = MNEW(classref_or_classinfo, 2);
- /* Array classes are not loaded from classfiles. */
- list_remove(&unloadedclasses, c);
+ if (opt_eager) {
+ classinfo *tc;
- /* Check array class name */
- namelen = c->name->blength;
- if (namelen < 2 || c->name->text[0] != '[')
- panic("Invalid array class name");
+ tc = class_java_lang_Cloneable;
+ LOADER_ASSERT(tc->loaded);
+ list_addfirst(&unlinkedclasses, tc);
+ c->interfaces[0].cls = tc;
- /* Check the component type */
- switch (c->name->text[1]) {
- case '[':
- /* c is an array of arrays. We have to create the component class. */
- comp = class_new(utf_new(c->name->text + 1,namelen - 1));
- break;
+ tc = class_java_io_Serializable;
+ LOADER_ASSERT(tc->loaded);
+ list_addfirst(&unlinkedclasses, tc);
+ c->interfaces[1].cls = tc;
- case 'L':
- /* c is an array of objects. */
- if (namelen < 4 || c->name->text[namelen - 1] != ';')
- panic("Invalid array class name");
- comp = class_new(utf_new(c->name->text + 2,namelen - 3));
- break;
+ } else {
+ c->interfaces[0].cls = class_java_lang_Cloneable;
+ c->interfaces[1].cls = class_java_io_Serializable;
}
- /* Setup the array class */
- c->super = class_java_lang_Object;
- c->flags = ACC_PUBLIC | ACC_FINAL | ACC_ABSTRACT;
+ c->methodscount = 1;
+ c->methods = MNEW(methodinfo, c->methodscount);
+
+ classrefs = MNEW(constant_classref, 2);
+ CLASSREF_INIT(classrefs[0], c, c->name);
+ CLASSREF_INIT(classrefs[1], c, utf_java_lang_Object);
- c->interfacescount = 2;
- c->interfaces = MNEW(classinfo*,2);
- c->interfaces[0] = class_java_lang_Cloneable;
- c->interfaces[1] = class_java_io_Serializable;
+ /* 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;
- c->methodscount = 1;
- c->methods = MNEW (methodinfo, c->methodscount);
+ /* create methodinfo */
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;");
+ 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->stubroutine = createnativestub((functionptr) &builtin_clone_array, clone);
clone->monoPoly = MONO;
+ /* parse the descriptor to get the register allocation */
+
+ if (!descriptor_params_from_paramtypes(clonedesc, clone->flags))
+ return false;
+
+ clone->entrypoint =
+ codegen_createnativestub((functionptr) &builtin_clone_array, clone);
+
/* XXX: field: length? */
- /* The array class has to be linked */
- list_addlast(&unlinkedclasses,c);
-
- /*
- * Array classes which are created after the other classes have been
- * loaded and linked are linked explicitely.
- */
- c->loaded=true;
-
- if (loader_inited)
- loader_load(c->name); /* XXX handle errors */
+ /* array classes are not loaded from class files */
+
+ c->loaded = true;
+ c->parseddescs = (u1 *) clonedesc;
+ c->parseddescsize = sizeof(methodinfo);
+ c->classrefs = classrefs;
+ c->classrefcount = 1;
+
+ /* insert class into the loaded class cache */
+ /* XXX free classinfo if NULL returned? */
+
+ return classcache_store(loader,c,true);
}
-/****************** Function: class_link_array *********************************
+/****************** Function: class_resolvefield_int ***************************
- This function is called by class_link to create the
- arraydescriptor for an array class.
+ This is an internally used helper function. Do not use this directly.
- This function returns NULL if the array cannot be linked because
- the component type has not been linked yet.
+ Tries to resolve a field having the given name and type.
+ If the field cannot be resolved, NULL is returned.
*******************************************************************************/
-static arraydescriptor *class_link_array(classinfo *c)
+static fieldinfo *class_resolvefield_int(classinfo *c, utf *name, utf *desc)
{
- classinfo *comp = NULL;
- int namelen = c->name->blength;
- arraydescriptor *desc;
- vftbl *compvftbl;
-
- /* Check the component type */
- switch (c->name->text[1]) {
- case '[':
- /* c is an array of arrays. */
- comp = class_get(utf_new(c->name->text + 1,namelen - 1));
- if (!comp) panic("Could not find component array class.");
- break;
-
- case 'L':
- /* c is an array of objects. */
- comp = class_get(utf_new(c->name->text + 2,namelen - 3));
- if (!comp) panic("Could not find component class.");
- break;
- }
-
- /* If the component type has not been linked return NULL */
- if (comp && !comp->linked)
- return NULL;
+ fieldinfo *fi;
+ s4 i;
- /* Allocate the arraydescriptor */
- desc = NEW(arraydescriptor);
+ /* search for field in class c */
- 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;
-
- 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;
- }
- else {
- desc->elementvftbl = compvftbl;
- desc->dimension = 1;
- desc->elementtype = ARRAYTYPE_OBJECT;
- }
-
- } else {
- /* c is an array of a primitive type */
- switch (c->name->text[1]) {
- case 'Z': desc->arraytype = ARRAYTYPE_BOOLEAN;
- desc->dataoffset = OFFSET(java_booleanarray,data);
- desc->componentsize = sizeof(u1);
- break;
-
- case 'B': desc->arraytype = ARRAYTYPE_BYTE;
- desc->dataoffset = OFFSET(java_bytearray,data);
- desc->componentsize = sizeof(u1);
- break;
-
- case 'C': desc->arraytype = ARRAYTYPE_CHAR;
- desc->dataoffset = OFFSET(java_chararray,data);
- desc->componentsize = sizeof(u2);
- break;
-
- case 'D': desc->arraytype = ARRAYTYPE_DOUBLE;
- desc->dataoffset = OFFSET(java_doublearray,data);
- desc->componentsize = sizeof(double);
- break;
-
- case 'F': desc->arraytype = ARRAYTYPE_FLOAT;
- desc->dataoffset = OFFSET(java_floatarray,data);
- desc->componentsize = sizeof(float);
- break;
-
- case 'I': desc->arraytype = ARRAYTYPE_INT;
- desc->dataoffset = OFFSET(java_intarray,data);
- desc->componentsize = sizeof(s4);
- break;
-
- case 'J': desc->arraytype = ARRAYTYPE_LONG;
- desc->dataoffset = OFFSET(java_longarray,data);
- desc->componentsize = sizeof(s8);
- break;
-
- case 'S': desc->arraytype = ARRAYTYPE_SHORT;
- desc->dataoffset = OFFSET(java_shortarray,data);
- desc->componentsize = sizeof(s2);
- break;
-
- default:
- panic("Invalid array class name");
+ for (i = 0; i < c->fieldscount; i++) {
+ if ((c->fields[i].name == name) && (c->fields[i].descriptor == desc)) {
+ return &(c->fields[i]);
}
-
- desc->componentvftbl = NULL;
- desc->elementvftbl = NULL;
- desc->dimension = 1;
- desc->elementtype = desc->arraytype;
- }
-
- return desc;
-}
-
-
-/********************** Function: class_link ***********************************
-
- Tries to link a class. The super class and every implemented interface must
- already have been linked. The function calculates the length in bytes that
- an instance of this class requires as well as the VTBL for methods and
- interface methods.
-
- If the class can be linked, it is removed from the list 'unlinkedclasses'
- and added to 'linkedclasses'. Otherwise, it is moved to the end of
- 'unlinkedclasses'.
-
- Attention: If cyclical class definitions are encountered, the program gets
- into an infinite loop (we'll have to work that out)
-
-*******************************************************************************/
-
-void class_link(classinfo *c)
-{
- s4 supervftbllength; /* vftbllegnth of super class */
- s4 vftbllength; /* vftbllength of current class */
- s4 interfacetablelength; /* interface table length */
- classinfo *super = c->super; /* super class */
- classinfo *ic, *c2; /* intermediate class variables */
- vftbl *v; /* vftbl of current class */
- s4 i; /* interface/method/field counter */
- arraydescriptor *arraydesc = NULL; /* descriptor for array classes */
-
-
- /* check if all superclasses are already linked, if not put c at end of
- unlinked list and return. Additionally initialize class fields. */
+ }
- /* check interfaces */
+ /* try superinterfaces recursively */
for (i = 0; i < c->interfacescount; i++) {
- ic = c->interfaces[i];
- if (!ic->linked) {
- list_remove(&unlinkedclasses, c);
- list_addlast(&unlinkedclasses, c);
- return;
- }
- if ((ic->flags & ACC_INTERFACE) == 0) {
- dolog("Specified interface is not declared as interface:");
- log_utf(ic->name);
- dolog("in");
- log_utf(c->name);
- panic("Specified interface is not declared as interface");
- }
- }
-
- /* check super class */
-
- if (super == NULL) { /* class java.long.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;
-
- c->finalizer = NULL;
-
- } else {
- if (!super->linked) {
- list_remove(&unlinkedclasses, c);
- list_addlast(&unlinkedclasses, c);
- return;
- }
-
- if ((super->flags & ACC_INTERFACE) != 0)
- panic("Interface specified as super class");
-
- /* handle array classes */
- /* The component class must have been linked already. */
- if (c->name->text[0] == '[')
- if ((arraydesc = class_link_array(c)) == NULL) {
- list_remove(&unlinkedclasses, c);
- list_addlast(&unlinkedclasses, c);
- return;
- }
-
- /* Don't allow extending final classes */
- if ((super->flags & ACC_FINAL) != 0)
- panic("Trying to extend final class");
-
- 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;
- }
-
-
- if (linkverbose) {
- char logtext[MAXLOGTEXT];
- sprintf(logtext, "Linking Class: ");
- utf_sprint(logtext + strlen(logtext), c->name );
- log_text(logtext);
- }
-
- /* compute vftbl length */
-
- for (i = 0; i < c->methodscount; i++) {
- methodinfo *m = &(c->methods[i]);
-
- if (!(m->flags & ACC_STATIC)) { /* is instance method */
- classinfo *sc = super;
- while (sc) {
- int j;
- for (j = 0; j < sc->methodscount; j++) {
- if (method_canoverwrite(m, &(sc->methods[j]))) {
- if ((sc->methods[j].flags & ACC_PRIVATE) != 0)
- goto notfoundvftblindex;
- if ((sc->methods[j].flags & ACC_FINAL) != 0) {
- log_utf(c->name);
- log_utf(sc->name);
- log_utf(sc->methods[j].name);
- log_utf(sc->methods[j].descriptor);
- panic("Trying to overwrite final method");
- }
- m->vftblindex = sc->methods[j].vftblindex;
- goto foundvftblindex;
- }
- }
- sc = sc->super;
- }
- notfoundvftblindex:
- m->vftblindex = (vftbllength++);
- foundvftblindex: ;
- }
- }
-
-#ifdef STATISTICS
- count_vftbl_len += sizeof(vftbl) + (sizeof(methodptr) * (vftbllength - 1));
-#endif
-
- /* compute interfacetable length */
-
- interfacetablelength = 0;
- c2 = c;
- while (c2) {
- for (i = 0; i < c2->interfacescount; i++) {
- s4 h = class_highestinterface (c2->interfaces[i]) + 1;
- if (h > interfacetablelength)
- interfacetablelength = h;
- }
- c2 = c2->super;
- }
-
- /* allocate virtual function table */
-
- v = (vftbl*) mem_alloc(sizeof(vftbl) + sizeof(methodptr) *
- (vftbllength - 1) + sizeof(methodptr*) *
- (interfacetablelength - (interfacetablelength > 0)));
- v = (vftbl*) (((methodptr*) v) + (interfacetablelength - 1) *
- (interfacetablelength > 1));
- c->header.vftbl = c->vftbl = v;
- v->class = c;
- v->vftbllength = vftbllength;
- v->interfacetablelength = interfacetablelength;
- v->arraydesc = arraydesc;
-
- /* store interface index in vftbl */
- if (c->flags & ACC_INTERFACE)
- v->baseval = -(c->index);
-
- /* copy virtual function table of super class */
-
- for (i = 0; i < supervftbllength; i++)
- v->table[i] = super->vftbl->table[i];
-
- /* add method stubs into virtual function table */
-
- for (i = 0; i < c->methodscount; i++) {
- methodinfo *m = &(c->methods[i]);
- if (!(m->flags & ACC_STATIC)) {
- v->table[m->vftblindex] = m->stubroutine;
- }
- }
-
- /* 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;
- }
- }
-
- /* initialize interfacetable and interfacevftbllength */
-
- v->interfacevftbllength = MNEW(s4, interfacetablelength);
-
-#ifdef STATISTICS
- count_vftbl_len += (4 + sizeof(s4)) * v->interfacetablelength;
-#endif
-
- for (i = 0; i < interfacetablelength; i++) {
- v->interfacevftbllength[i] = 0;
- v->interfacetable[-i] = NULL;
- }
-
- /* add interfaces */
-
- for (c2 = c; c2 != NULL; c2 = c2->super)
- for (i = 0; i < c2->interfacescount; i++) {
- class_addinterface(c, c2->interfaces[i]);
- }
-
- /* add finalizer method (not for java.lang.Object) */
-
- if (super != NULL) {
- methodinfo *fi;
- static utf *finame = NULL;
- static utf *fidesc = NULL;
-
- if (finame == NULL)
- finame = utf_finalize;
- if (fidesc == NULL)
- fidesc = utf_fidesc;
-
- fi = class_findmethod(c, finame, fidesc);
- if (fi != NULL) {
- if (!(fi->flags & ACC_STATIC)) {
- c->finalizer = fi;
- }
- }
- }
-
- /* final tasks */
-
- c->linked = true;
-
- list_remove(&unlinkedclasses, c);
- list_addlast(&linkedclasses, c);
-}
-
-
-/******************* Function: class_freepool **********************************
-
- Frees all resources used by this classes Constant Pool.
-
-*******************************************************************************/
-
-static void class_freecpool (classinfo *c)
-{
- u4 idx;
- u4 tag;
- voidptr info;
-
- for (idx=0; idx < c->cpcount; idx++) {
- tag = c->cptags[idx];
- info = c->cpinfos[idx];
-
- if (info != NULL) {
- switch (tag) {
- case CONSTANT_Fieldref:
- case CONSTANT_Methodref:
- case CONSTANT_InterfaceMethodref:
- FREE (info, constant_FMIref);
- break;
- case CONSTANT_Integer:
- FREE (info, constant_integer);
- break;
- case CONSTANT_Float:
- FREE (info, constant_float);
- break;
- case CONSTANT_Long:
- FREE (info, constant_long);
- break;
- case CONSTANT_Double:
- FREE (info, constant_double);
- break;
- case CONSTANT_NameAndType:
- FREE (info, constant_nameandtype);
- break;
- }
- }
- }
-
- MFREE (c -> cptags, u1, c -> cpcount);
- MFREE (c -> cpinfos, voidptr, c -> cpcount);
-}
-
-
-/*********************** Function: class_free **********************************
-
- Frees all resources used by the class.
-
-*******************************************************************************/
-
-static void class_free(classinfo *c)
-{
- s4 i;
- vftbl *v;
-
- class_freecpool(c);
-
- MFREE(c->interfaces, classinfo*, c->interfacescount);
-
- for (i = 0; i < c->fieldscount; i++)
- field_free(&(c->fields[i]));
-
- 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) + sizeof(methodptr) * (v->vftbllength - 1) +
- sizeof(methodptr*) * (v->interfacetablelength -
- (v->interfacetablelength > 0));
- v = (vftbl*) (((methodptr*) v) - (v->interfacetablelength - 1) *
- (v->interfacetablelength > 1));
- mem_free(v, i);
+ fi = class_resolvefield_int(c->interfaces[i].cls, name, desc);
+ if (fi)
+ return fi;
}
- if (c->innerclasscount)
- MFREE(c->innerclass, innerclassinfo, c->innerclasscount);
-
- /* if (c->classvftbl)
- mem_free(c->header.vftbl, sizeof(vftbl) + sizeof(methodptr)*(c->vftbl->vftbllength-1)); */
-
- GCFREE(c);
-}
-
-
-/************************* Function: class_findfield ***************************
-
- Searches a 'classinfo' structure for a field having the given name and
- type.
-
-*******************************************************************************/
+ /* try superclass */
-fieldinfo *class_findfield(classinfo *c, utf *name, utf *desc)
-{
- s4 i;
-
- for (i = 0; i < c->fieldscount; i++) {
- if ((c->fields[i].name == name) && (c->fields[i].descriptor == desc))
- return &(c->fields[i]);
- }
+ if (c->super.cls)
+ return class_resolvefield_int(c->super.cls, name, desc);
- panic("Can not find field given in CONSTANT_Fieldref");
+ /* not found */
- /* keep compiler happy */
return NULL;
}
-/************************* Function: class_findmethod **************************
+/********************* Function: class_resolvefield ***************************
- 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.
+ Resolves a reference from REFERER to a field with NAME and DESC in class C.
+
+ If the field cannot be resolved the return value is NULL. If EXCEPT is
+ true *exceptionptr is set, too.
*******************************************************************************/
-s4 class_findmethodIndex(classinfo *c, utf *name, utf *desc)
+fieldinfo *class_resolvefield(classinfo *c, utf *name, utf *desc,
+ classinfo *referer, bool except)
{
- s4 i;
-#if defined(JOWENN_DEBUG1) || defined(JOWENN_DEBUG2)
- char *buffer;
- int buffer_len, pos;
-#endif
-#ifdef JOWENN_DEBUG1
-
- buffer_len =
- utf_strlen(name) + utf_strlen(desc) + utf_strlen(c->name) + 64;
-
- buffer = MNEW(char, buffer_len);
-
- strcpy(buffer, "class_findmethod: method:");
- utf_sprint(buffer + strlen(buffer), name);
- strcpy(buffer + strlen(buffer), ", desc: ");
- utf_sprint(buffer + strlen(buffer), desc);
- strcpy(buffer + strlen(buffer), ", classname: ");
- utf_sprint(buffer + strlen(buffer), c->name);
-
- log_text(buffer);
+ fieldinfo *fi;
- MFREE(buffer, char, buffer_len);
-#endif
- for (i = 0; i < c->methodscount; i++) {
-#ifdef JOWENN_DEBUG2
- buffer_len =
- utf_strlen(c->methods[i].name) + utf_strlen(c->methods[i].descriptor)+ 64;
+ /* XXX resolve class c */
+ /* XXX check access from REFERER to C */
- buffer = MNEW(char, buffer_len);
+ fi = class_resolvefield_int(c, name, desc);
- strcpy(buffer, "class_findmethod: comparing to method:");
- utf_sprint(buffer + strlen(buffer), c->methods[i].name);
- strcpy(buffer + strlen(buffer), ", desc: ");
- utf_sprint(buffer + strlen(buffer), c->methods[i].descriptor);
-
- log_text(buffer);
+ if (!fi) {
+ if (except)
+ *exceptionptr =
+ new_exception_utfmessage(string_java_lang_NoSuchFieldError,
+ name);
- MFREE(buffer, char, buffer_len);
-#endif
-
-
- if ((c->methods[i].name == name) && ((desc == NULL) ||
- (c->methods[i].descriptor == desc))) {
- return i;
- }
+ return NULL;
}
-#ifdef JOWENN_DEBUG2
- class_showconstantpool(c);
- log_text("class_findmethod: returning NULL");
-#endif
+ /* XXX check access rights */
- return -1;
+ return fi;
}
-/************************* Function: class_findmethod **************************
+/* class_findmethod ************************************************************
- Searches a 'classinfo' structure for a method having the given name and
- type.
- If type is NULL, it is ignored.
+ Searches a 'classinfo' structure for a method having the given name
+ and descriptor. If descriptor is NULL, it is ignored.
*******************************************************************************/
methodinfo *class_findmethod(classinfo *c, utf *name, utf *desc)
{
-#if 0
- s4 i;
-#if defined(JOWENN_DEBUG1) || defined(JOWENN_DEBUG2)
- char *buffer;
- int buffer_len, pos;
-#endif
-#ifdef JOWENN_DEBUG1
-
- buffer_len =
- utf_strlen(name) + utf_strlen(desc) + utf_strlen(c->name) + 64;
-
- buffer = MNEW(char, buffer_len);
-
- strcpy(buffer, "class_findmethod: method:");
- utf_sprint(buffer + strlen(buffer), name);
- strcpy(buffer + strlen(buffer), ", desc: ");
- utf_sprint(buffer + strlen(buffer), desc);
- strcpy(buffer + strlen(buffer), ", classname: ");
- utf_sprint(buffer + strlen(buffer), c->name);
-
- log_text(buffer);
+ methodinfo *m;
+ s4 i;
- MFREE(buffer, char, buffer_len);
-#endif
for (i = 0; i < c->methodscount; i++) {
-#ifdef JOWENN_DEBUG2
- buffer_len =
- utf_strlen(c->methods[i].name) + utf_strlen(c->methods[i].descriptor)+ 64;
-
- buffer = MNEW(char, buffer_len);
-
- strcpy(buffer, "class_findmethod: comparing to method:");
- utf_sprint(buffer + strlen(buffer), c->methods[i].name);
- strcpy(buffer + strlen(buffer), ", desc: ");
- utf_sprint(buffer + strlen(buffer), c->methods[i].descriptor);
-
- log_text(buffer);
-
- MFREE(buffer, char, buffer_len);
-#endif
-
- if ((c->methods[i].name == name) && ((desc == NULL) ||
- (c->methods[i].descriptor == desc))) {
- return &(c->methods[i]);
- }
- }
-#ifdef JOWENN_DEBUG2
- class_showconstantpool(c);
- log_text("class_findmethod: returning NULL");
-#endif
- return NULL;
-#endif
-
- s4 idx=class_findmethodIndex(c, name, desc);
-/* if (idx==-1) log_text("class_findmethod: method not found");*/
- if (idx == -1) return NULL;
-
- return &(c->methods[idx]);
-}
+ m = &(c->methods[i]);
-
-/*********************** Function: class_fetchmethod **************************
-
- like class_findmethod, but aborts with an error if the method is not found
-
-*******************************************************************************/
-
-methodinfo *class_fetchmethod(classinfo *c, utf *name, utf *desc)
-{
- methodinfo *mi;
- mi = class_findmethod(c, name, desc);
-
- if (!mi) {
- log_plain("Class: "); if (c) log_plain_utf(c->name); log_nl();
- log_plain("Method: "); if (name) log_plain_utf(name); log_nl();
- log_plain("Descriptor: "); if (desc) log_plain_utf(desc); log_nl();
- panic("Method not found");
+ if ((m->name == name) && ((desc == NULL) || (m->descriptor == desc)))
+ return m;
}
- return mi;
-}
-
-
-/*********************** Function: class_findmethod_w**************************
-
- like class_findmethod, but logs a warning if the method is not found
-
-*******************************************************************************/
-
-methodinfo *class_findmethod_w(classinfo *c, utf *name, utf *desc, char *from)
-{
- methodinfo *mi;
- mi = class_findmethod(c, name, desc);
-
- if (!mi) {
- log_plain("Class: "); if (c) log_plain_utf(c->name); log_nl();
- log_plain("Method: "); if (name) log_plain_utf(name); log_nl();
- log_plain("Descriptor: "); if (desc) log_plain_utf(desc); log_nl();
-
- if ( c->flags & ACC_PUBLIC ) log_plain(" PUBLIC ");
- if ( c->flags & ACC_PRIVATE ) log_plain(" PRIVATE ");
- if ( c->flags & ACC_PROTECTED ) log_plain(" PROTECTED ");
- if ( c->flags & ACC_STATIC ) log_plain(" STATIC ");
- if ( c->flags & ACC_FINAL ) log_plain(" FINAL ");
- if ( c->flags & ACC_SYNCHRONIZED ) log_plain(" SYNCHRONIZED ");
- if ( c->flags & ACC_VOLATILE ) log_plain(" VOLATILE ");
- if ( c->flags & ACC_TRANSIENT ) log_plain(" TRANSIENT ");
- if ( c->flags & ACC_NATIVE ) log_plain(" NATIVE ");
- if ( c->flags & ACC_INTERFACE ) log_plain(" INTERFACE ");
- if ( c->flags & ACC_ABSTRACT ) log_plain(" ABSTRACT ");
-
- log_plain(from);
- log_plain(" : WARNING: Method not found");log_nl( );
- }
-
- return mi;
+ return NULL;
}
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 *desc_end = UTF_END(desc);
+ char *meth_end = UTF_END(meth_descr);
char ch;
/* compare argument types */
break; /* no match */
if (ch == ')')
- return &(c->methods[i]); /* all parameter types equal */
+ return &(c->methods[i]); /* all parameter types equal */
}
}
}
/* method found */
if (m) return m;
/* search superclass */
- c = c->super;
+ c = c->super.cls;
}
return NULL;
}
-/************************* Function: class_resolvemethod ***********************
+/* class_resolvemethod *********************************************************
- Searches a class and every super class for a method.
+ Searches a class and it's super classes for a method.
+
+ Superinterfaces are *not* searched.
*******************************************************************************/
methodinfo *class_resolvemethod(classinfo *c, utf *name, utf *desc)
{
+ methodinfo *m;
+
while (c) {
- methodinfo *m = class_findmethod(c, name, desc);
- if (m) return m;
- /* search superclass */
- c = c->super;
+ m = class_findmethod(c, name, desc);
+
+ if (m)
+ return m;
+
+ c = c->super.cls;
}
return NULL;
}
-/************************* Function: class_issubclass **************************
+/* class_resolveinterfacemethod_intern *****************************************
+
+ Internally used helper function. Do not use this directly.
- Checks if sub is a descendant of super.
-
*******************************************************************************/
-bool class_issubclass(classinfo *sub, classinfo *super)
+static methodinfo *class_resolveinterfacemethod_intern(classinfo *c,
+ utf *name, utf *desc)
{
- for (;;) {
- if (!sub) return false;
- if (sub == super) return true;
- sub = sub->super;
+ methodinfo *m;
+ s4 i;
+
+ m = class_findmethod(c, name, desc);
+
+ if (m)
+ return m;
+
+ /* try the superinterfaces */
+
+ for (i = 0; i < c->interfacescount; i++) {
+ m = class_resolveinterfacemethod_intern(c->interfaces[i].cls,
+ name, desc);
+
+ if (m)
+ return m;
}
+
+ return NULL;
}
+/* class_resolveinterfacemethod ************************************************
-/****************** Initialization function for classes ******************
+ Resolves a reference from REFERER to a method with NAME and DESC in
+ interface C.
- 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 the method cannot be resolved the return value is NULL. If
+ EXCEPT is true *exceptionptr is set, too.
*******************************************************************************/
-void class_init(classinfo *c)
+methodinfo *class_resolveinterfacemethod(classinfo *c, utf *name, utf *desc,
+ classinfo *referer, bool except)
{
- methodinfo *m;
- native_stackframeinfo **info;
- s4 i;
-#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
- int b;
-#endif
+ methodinfo *mi;
- if (!makeinitializations)
- return;
- if (c->initialized)
- return;
+ /* 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);
- c->initialized = true;
+ return NULL;
+ }
-#ifdef STATISTICS
- count_class_inits++;
-#endif
+ mi = class_resolveinterfacemethod_intern(c, name, desc);
- /* initialize super class */
- if (c->super) {
- if (initverbose) {
- char logtext[MAXLOGTEXT];
- sprintf(logtext, "Initialize super class ");
- utf_sprint(logtext + strlen(logtext), c->super->name);
- sprintf(logtext + strlen(logtext), " from ");
- utf_sprint(logtext + strlen(logtext), c->name);
- log_text(logtext);
- }
- class_init(c->super);
- }
+ if (mi)
+ return mi;
- /* initialize interface classes */
- for (i = 0; i < c->interfacescount; i++) {
- if (initverbose) {
- char logtext[MAXLOGTEXT];
- sprintf(logtext, "Initialize interface class ");
- utf_sprint(logtext + strlen(logtext), c->interfaces[i]->name);
- sprintf(logtext + strlen(logtext), " from ");
- utf_sprint(logtext + strlen(logtext), c->name);
- log_text(logtext);
- }
- class_init(c->interfaces[i]); /* real */
- }
+ /* try class java.lang.Object */
- m = class_findmethod(c, utf_clinit, utf_fidesc);
- if (!m) {
- if (initverbose) {
- char logtext[MAXLOGTEXT];
- sprintf(logtext, "Class ");
- utf_sprint(logtext + strlen(logtext), c->name);
- sprintf(logtext + strlen(logtext), " has no initializer");
- log_text(logtext);
- }
- /* goto callinitialize;*/
- return;
- }
+ mi = class_findmethod(class_java_lang_Object, name, desc);
- if (!(m->flags & ACC_STATIC))
- panic("Class initializer is not static!");
+ if (mi)
+ return mi;
- if (initverbose) {
- char logtext[MAXLOGTEXT];
- sprintf(logtext, "Starting initializer for class: ");
- utf_sprint(logtext + strlen(logtext), c->name);
- log_text(logtext);
- }
+ if (except)
+ *exceptionptr =
+ new_exception_utfmessage(string_java_lang_NoSuchMethodError, name);
-#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
- b = blockInts;
- blockInts = 0;
-#endif
+ return NULL;
+}
- /* now call the initializer */
- asm_calljavafunction(m, NULL, NULL, NULL, NULL);
-#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
- assert(blockInts == 0);
- blockInts = b;
-#endif
+/* class_resolveclassmethod ****************************************************
+
+ Resolves a reference from REFERER to a method with NAME and DESC in
+ class C.
- /* we have to throw an exception */
- if (*exceptionptr) {
- printf("Exception in thread \"main\" java.lang.ExceptionInInitializerError\n");
- printf("Caused by: ");
- utf_display((*exceptionptr)->vftbl->class->name);
- printf("\n");
- fflush(stdout);
- exit(1);
- }
+ If the method cannot be resolved the return value is NULL. If
+ EXCEPT is true *exceptionptr is set, too.
- if (initverbose) {
- char logtext[MAXLOGTEXT];
- sprintf(logtext, "Finished initializer for class: ");
- utf_sprint(logtext + strlen(logtext), c->name);
- log_text(logtext);
- }
+*******************************************************************************/
- if (c->name == utf_systemclass) {
- /* class java.lang.System requires explicit initialization */
+methodinfo *class_resolveclassmethod(classinfo *c, utf *name, utf *desc,
+ classinfo *referer, bool except)
+{
+ classinfo *cls;
+ methodinfo *mi;
+ s4 i;
+ char *msg;
+ s4 msglen;
- if (initverbose)
- printf("#### Initializing class System");
+ /* 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; */
+/* } */
- /* find initializing method */
- m = class_findmethod(c,
- utf_initsystemclass,
- utf_fidesc);
+ /* try class c and its superclasses */
- if (!m) {
- /* no method found */
- /* printf("initializeSystemClass failed"); */
- return;
- }
+ cls = c;
-#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
- b = blockInts;
- blockInts = 0;
-#endif
+ while (cls) {
+ mi = class_findmethod(cls, name, desc);
- asm_calljavafunction(m, NULL, NULL, NULL, NULL);
+ if (mi)
+ goto found;
-#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
- assert(blockInts == 0);
- blockInts = b;
-#endif
+ cls = cls->super.cls;
+ }
- if (*exceptionptr) {
- printf("#### initializeSystemClass has thrown: ");
- utf_display((*exceptionptr)->vftbl->class->name);
- printf("\n");
- fflush(stdout);
- }
+ /* try the superinterfaces */
+
+ for (i = 0; i < c->interfacescount; i++) {
+ mi = class_resolveinterfacemethod_intern(c->interfaces[i].cls,
+ name, desc);
+
+ if (mi)
+ goto found;
}
-}
+
+ if (except) {
+ msglen = utf_strlen(c->name) + strlen(".") + utf_strlen(name) +
+ utf_strlen(desc) + strlen("0");
+ msg = MNEW(char, msglen);
-/********* Function: find_class_method_constant *********/
+ utf_sprint(msg, c->name);
+ strcat(msg, ".");
+ utf_sprint(msg + strlen(msg), name);
+ utf_sprint(msg + strlen(msg), desc);
-int find_class_method_constant (classinfo *c, utf * c1, utf* m1, utf* d1)
-{
- u4 i;
- voidptr e;
+ *exceptionptr =
+ new_exception_message(string_java_lang_NoSuchMethodError, msg);
- 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;
+ MFREE(msg, char, msglen);
+ }
- case CONSTANT_InterfaceMethodref:
- {
- constant_FMIref *fmi = e;
- if ( (fmi->class->name == c1)
- && (fmi->name == m1)
- && (fmi->descriptor == d1)) {
+ return NULL;
- return i;
- }
- }
- break;
- }
- }
+ found:
+ if ((mi->flags & ACC_ABSTRACT) && !(c->flags & ACC_ABSTRACT)) {
+ if (except)
+ *exceptionptr = new_exception(string_java_lang_AbstractMethodError);
+
+ return NULL;
}
- return -1;
+ /* XXX check access rights */
+
+ return mi;
+}
+
+
+/************************* Function: class_issubclass **************************
+
+ Checks if sub is a descendant of super.
+
+*******************************************************************************/
+
+bool class_issubclass(classinfo *sub, classinfo *super)
+{
+ for (;;) {
+ if (!sub) return false;
+ if (sub == super) return true;
+ sub = sub->super.cls;
+ }
}
switch (c->cptags [i]) {
case CONSTANT_Class:
printf("Classreference -> ");
- utf_display(((classinfo*)e)->name);
+ utf_display(((constant_classref*)e)->name);
break;
case CONSTANT_Fieldref:
displayFMIi:
{
constant_FMIref *fmi = e;
- utf_display(fmi->class->name);
+ utf_display(fmi->classref->name);
printf(".");
utf_display(fmi->name);
printf(" ");
utf_display(e);
break;
default:
- panic("Invalid type of ConstantPool-Entry");
+ log_text("Invalid type of ConstantPool-Entry");
+ assert(0);
}
}
printf("\n");
switch (c -> cptags [i]) {
case CONSTANT_Class:
printf ("Classreference -> ");
- utf_display ( ((classinfo*)e) -> name );
+ utf_display ( ((constant_classref*)e) -> name );
break;
case CONSTANT_Fieldref:
displayFMI:
{
constant_FMIref *fmi = e;
- utf_display ( fmi->class->name );
+ utf_display ( fmi->classref->name );
printf (".");
utf_display ( fmi->name);
printf (" ");
utf_display (e);
break;
default:
- panic ("Invalid type of ConstantPool-Entry");
+ log_text("Invalid type of ConstantPool-Entry");
+ assert(0);
}
}
printf ("Flags: "); printflags (c->flags); printf ("\n");
printf ("This: "); utf_display (c->name); printf ("\n");
- if (c->super) {
- printf ("Super: "); utf_display (c->super->name); printf ("\n");
+ if (c->super.cls) {
+ printf ("Super: "); utf_display (c->super.cls->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);
+ utf_display (c -> interfaces[i].cls -> name);
+ printf (" (%d)\n", c->interfaces[i].cls -> index);
}
printf ("fields:\n");
}
+/* loader_close ****************************************************************
-/******************************************************************************/
-/******************* General functions for the class loader *******************/
-/******************************************************************************/
-
-/********************* Function: loader_load ***********************************
-
- Loads and links the class desired class and each class and interface
- referenced by it.
- Returns: a pointer to this class
-
-*******************************************************************************/
-
-static int loader_load_running = 0;
-
-classinfo *loader_load(utf *topname)
-{
- classinfo *top;
- classinfo *c;
- s8 starttime = 0;
- s8 stoptime = 0;
- classinfo *notlinkable;
-
-#if defined(USE_THREADS) && defined(NATIVE_THREADS)
- pthread_mutex_lock(&compiler_mutex);
-#endif
-
- /* avoid recursive calls */
- if (loader_load_running)
- return class_new(topname);
-
- loader_load_running++;
+ Frees all resources.
-#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
- intsDisable();
-#endif
-
- if (getloadingtime)
- starttime = getcputime();
-
- top = class_new(topname);
-
- /* load classes */
- while ((c = list_first(&unloadedclasses))) {
- if (!class_load(c)) {
- if (linkverbose)
- dolog("Failed to load class");
- list_remove(&unloadedclasses, c);
- top = NULL;
- }
- }
-
- /* link classes */
- if (linkverbose)
- dolog("Linking...");
-
- /* Added a hack to break infinite linking loops. A better
- * linking algorithm would be nice. -Edwin */
- notlinkable = NULL;
- while ((c = list_first(&unlinkedclasses))) {
- class_link(c);
- if (!c->linked) {
- if (!notlinkable)
- notlinkable = c;
- else if (notlinkable == c) {
- /* We tried to link this class for the second time and
- * no other classes were linked in between, so we are
- * caught in a loop.
- */
- if (linkverbose)
- dolog("Cannot resolve linking dependencies");
- top = NULL;
- if (!*exceptionptr)
- throw_linkageerror_message(c->name);
- break;
- }
-
- } else
- notlinkable = NULL;
- }
- if (linkverbose)
- dolog("Linking done.");
-
- if (loader_inited)
- loader_compute_subclasses();
-
- /* measure time */
- if (getloadingtime) {
- stoptime = getcputime();
- loadingtime += (stoptime - starttime);
- }
-
-
- loader_load_running--;
-
- /* check if a former loader_load call tried to load/link the class and
- failed. This is needed because the class didn't appear in the
- undloadclasses or unlinkedclasses list during this class. */
- if (top) {
- if (!top->loaded) {
- if (linkverbose) dolog("Failed to load class (former call)");
- throw_noclassdeffounderror_message(top->name);
- top = NULL;
-
- } else if (!top->linked) {
- if (linkverbose)
- dolog("Failed to link class (former call)");
- throw_linkageerror_message(top->name);
- top = NULL;
- }
- }
-
-#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
- intsRestore();
-#endif
-
-#if defined(USE_THREADS) && defined(NATIVE_THREADS)
- pthread_mutex_unlock(&compiler_mutex);
-#endif
-
- /* DEBUG */ /*if (linkverbose && !top) dolog("returning NULL from loader_load");*/
-
- return top;
-}
-
-
-/****************** Function: loader_load_sysclass ****************************
-
- Loads and links the class desired class and each class and interface
- referenced by it.
-
- The pointer to the classinfo is stored in *top if top != NULL.
- The pointer is also returned.
-
- If the class could not be loaded the function aborts with an error.
-
*******************************************************************************/
-classinfo *loader_load_sysclass(classinfo **top, utf *topname)
-{
- classinfo *cls;
-
- if ((cls = loader_load(topname)) == NULL) {
- log_plain("Could not load important system class: ");
- log_plain_utf(topname);
- log_nl();
- panic("Could not load important system class");
- }
-
- if (top) *top = cls;
-
- return cls;
-}
-
-
-/**************** function: create_primitive_classes ***************************
-
- create classes representing primitive types
-
-********************************************************************************/
-
-
-void create_primitive_classes()
-{
- int i;
-
- for (i=0;i<PRIMITIVETYPE_COUNT;i++) {
- /* create primitive class */
- classinfo *c = class_new ( utf_new_char(primitivetype_table[i].name) );
- c -> classUsed = NOTUSED; /* not used initially CO-RT */
- c -> impldBy = NULL;
-
- /* prevent loader from loading primitive class */
- list_remove (&unloadedclasses, c);
- c->loaded=true;
- /* add to unlinked classes */
- list_addlast (&unlinkedclasses, c);
-/*JOWENN primitive types don't have objects as super class c -> super = class_java_lang_Object; */
- class_link (c);
-
- primitivetype_table[i].class_primitive = c;
-
- /* create class for wrapping the primitive type */
- primitivetype_table[i].class_wrap =
- class_new( utf_new_char(primitivetype_table[i].wrapname) );
- primitivetype_table[i].class_wrap -> classUsed = NOTUSED; /* not used initially CO-RT */
- primitivetype_table[i].class_wrap -> impldBy = NULL;
-
- /* create the primitive array class */
- if (primitivetype_table[i].arrayname) {
- c = class_new( utf_new_char(primitivetype_table[i].arrayname) );
- primitivetype_table[i].arrayclass = c;
- c->loaded=true;
- if (!c->linked) class_link(c);
- primitivetype_table[i].arrayvftbl = c->vftbl;
- }
- }
-}
-
-/**************** function: class_primitive_from_sig ***************************
-
- return the primitive class indicated by the given signature character
-
- If the descriptor does not indicate a valid primitive type the
- return value is NULL.
-
-********************************************************************************/
-
-classinfo *class_primitive_from_sig(char sig)
+void loader_close(void)
{
- 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;
-}
-
-/****************** function: class_from_descriptor ****************************
-
- return the class indicated by the given descriptor
-
- 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.)
-
- mode.......a combination (binary or) of the following flags:
-
- (Flags marked with * are the default settings.)
-
- What to do if a reference type descriptor is parsed successfully:
-
- CLASSLOAD_SKIP...skip it and return something != NULL
- * CLASSLOAD_NEW....get classinfo * via class_new
- CLASSLOAD_LOAD...get classinfo * via loader_load
-
- How to handle primitive types:
-
- * CLASSLOAD_PRIMITIVE.......return primitive class (eg. "int")
- CLASSLOAD_NULLPRIMITIVE...return NULL for primitive types
-
- How to handle "V" descriptors:
-
- * CLASSLOAD_VOID.....handle it like other primitive types
- CLASSLOAD_NOVOID...treat it as an error
-
- How to deal with extra characters after the end of the
- descriptor:
-
- * CLASSLOAD_NOCHECKEND...ignore (useful for parameter lists)
- CLASSLOAD_CHECKEND.....treat them as an error
-
- How to deal with errors:
-
- * CLASSLOAD_PANIC....abort execution with an error message
- CLASSLOAD_NOPANIC..return NULL on error
-
-********************************************************************************/
-
-classinfo *class_from_descriptor(char *utf_ptr, char *end_ptr,
- char **next, int mode)
-{
- char *start = utf_ptr;
- bool error = false;
- utf *name;
-
- SKIP_FIELDDESCRIPTOR_SAFE(utf_ptr,end_ptr,error);
-
- if (mode & CLASSLOAD_CHECKEND)
- error |= (utf_ptr != end_ptr);
-
- 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);
- return (mode & CLASSLOAD_LOAD)
- ? loader_load(name) : class_new(name); /* XXX handle errors */
- }
- }
-
- /* An error occurred */
- if (mode & CLASSLOAD_NOPANIC)
- return NULL;
-
- log_plain("Invalid descriptor at beginning of '");
- log_plain_utf(utf_new(start, end_ptr-start));
- log_plain("'");
- log_nl();
-
- panic("Invalid descriptor");
-
- /* keep compiler happy */
- return NULL;
-}
-
-
-/******************* function: type_from_descriptor ****************************
-
- return the basic type indicated by the given descriptor
-
- This function parses a descriptor and returns its basic type as
- TYPE_INT, TYPE_LONG, TYPE_FLOAT, TYPE_DOUBLE, TYPE_ADDRESS or TYPE_VOID.
-
- cls...if non-NULL the referenced variable is set to the classinfo *
- returned by class_from_descriptor.
-
- For documentation of the arguments utf_ptr, end_ptr, next and mode
- see class_from_descriptor. The only difference is that
- type_from_descriptor always uses CLASSLOAD_PANIC.
-
-********************************************************************************/
-
-int type_from_descriptor(classinfo **cls, char *utf_ptr, char *end_ptr,
- char **next, int mode)
-{
- classinfo *mycls;
- if (!cls) cls = &mycls;
- *cls = class_from_descriptor(utf_ptr, end_ptr, next, mode & (~CLASSLOAD_NOPANIC));
- switch (*utf_ptr) {
- case 'B':
- case 'C':
- case 'I':
- case 'S':
- case 'Z':
- return TYPE_INT;
- case 'D':
- return TYPE_DOUBLE;
- case 'F':
- return TYPE_FLOAT;
- case 'J':
- return TYPE_LONG;
- case 'V':
- return TYPE_VOID;
- }
- return TYPE_ADDRESS;
-}
-
-
-
-/*************** function: create_system_exception_classes *******************************
-
- create system exception classes needed by default
-
-********************************************************************************/
-
-static void create_system_exception_classes()
-{
-
- if (verbose) log_text("loader_init: create_system_exception_classs: loader_load: java/lang/ClassCastException");
- loader_load_sysclass(&class_java_lang_ClassCastException,
- utf_new_char ("java/lang/ClassCastException"));
- loader_load_sysclass(&class_java_lang_NullPointerException,
- utf_new_char ("java/lang/NullPointerException"));
- loader_load_sysclass(&class_java_lang_ArrayIndexOutOfBoundsException,
- utf_new_char ("java/lang/ArrayIndexOutOfBoundsException"));
- loader_load_sysclass(&class_java_lang_NegativeArraySizeException,
- utf_new_char ("java/lang/NegativeArraySizeException"));
- loader_load_sysclass(&class_java_lang_OutOfMemoryError,
- utf_new_char ("java/lang/OutOfMemoryError"));
- loader_load_sysclass(&class_java_lang_ArrayStoreException,
- utf_new_char ("java/lang/ArrayStoreException"));
- loader_load_sysclass(&class_java_lang_ArithmeticException,
- utf_new_char ("java/lang/ArithmeticException"));
- loader_load_sysclass(&class_java_lang_ThreadDeath,
- utf_new_char ("java/lang/ThreadDeath"));
-
-
-}
-
-
-/*************** function: create_system_exception_classes *******************************
-
- create system exception proto classes needed by default
-
-********************************************************************************/
-
-static void create_system_exception_proto_classes()
-{
-
- if (verbose) log_text("loader_init: creating global proto_java_lang_ClassCastException");
- proto_java_lang_ClassCastException =
- builtin_new(class_java_lang_ClassCastException);
-
- if (verbose) log_text("loader_init: proto_java_lang_ClassCastException has been initialized");
-
- proto_java_lang_NullPointerException =
- builtin_new(class_java_lang_NullPointerException);
- if (verbose) log_text("loader_init: proto_java_lang_NullPointerException has been initialized");
-
- proto_java_lang_ArrayIndexOutOfBoundsException =
- builtin_new(class_java_lang_ArrayIndexOutOfBoundsException);
-
- proto_java_lang_NegativeArraySizeException =
- builtin_new(class_java_lang_NegativeArraySizeException);
-
- proto_java_lang_OutOfMemoryError =
- builtin_new(class_java_lang_OutOfMemoryError);
-
- proto_java_lang_ArithmeticException =
- builtin_new(class_java_lang_ArithmeticException);
-
- proto_java_lang_ArrayStoreException =
- builtin_new(class_java_lang_ArrayStoreException);
-
- proto_java_lang_ThreadDeath =
- builtin_new(class_java_lang_ThreadDeath);
-
-
-}
-
-
-
-/*************** function: create_pseudo_classes *******************************
-
- create pseudo classes used by the typechecker
-
-********************************************************************************/
-
-static void create_pseudo_classes()
-{
- /* pseudo class for Arraystubs (extends java.lang.Object) */
-
- pseudo_class_Arraystub = class_new(utf_new_char("$ARRAYSTUB$"));
- list_remove(&unloadedclasses, pseudo_class_Arraystub);
-
- pseudo_class_Arraystub->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;
-
- list_addlast(&unlinkedclasses, pseudo_class_Arraystub);
- class_link(pseudo_class_Arraystub);
-
- pseudo_class_Arraystub_vftbl = pseudo_class_Arraystub->vftbl;
-
- /* pseudo class representing the null type */
-
- pseudo_class_Null = class_new(utf_new_char("$NULL$"));
- list_remove(&unloadedclasses, pseudo_class_Null);
-
- pseudo_class_Null->super = class_java_lang_Object;
-
- list_addlast(&unlinkedclasses, pseudo_class_Null);
- class_link(pseudo_class_Null);
-
- /* pseudo class representing new uninitialized objects */
-
- pseudo_class_New = class_new(utf_new_char("$NEW$"));
- list_remove(&unloadedclasses, pseudo_class_New);
-
- pseudo_class_New->super = class_java_lang_Object;
-
- list_addlast(&unlinkedclasses, pseudo_class_New);
- class_link(pseudo_class_New);
-}
-
-
-/********************** Function: loader_init **********************************
-
- Initializes all lists and loads all classes required for the system or the
- compiler.
-
-*******************************************************************************/
-
-void loader_init(u1 *stackbottom)
-{
- interfaceindex = 0;
-
- list_init(&unloadedclasses, OFFSET(classinfo, listnode));
- list_init(&unlinkedclasses, OFFSET(classinfo, listnode));
- list_init(&linkedclasses, OFFSET(classinfo, listnode));
-
- /* create utf-symbols for pointer comparison of frequently used strings */
- utf_innerclasses = utf_new_char("InnerClasses");
- utf_constantvalue = utf_new_char("ConstantValue");
- utf_code = utf_new_char("Code");
- utf_exceptions = utf_new_char("Exceptions");
- utf_linenumbertable = utf_new_char("LineNumberTable");
- 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>");
-
- /* create some important classes */
- /* These classes have to be created now because the classinfo
- * pointers are used in the loading code.
- */
- class_java_lang_Object = class_new(utf_new_char("java/lang/Object"));
- class_java_lang_String = class_new(utf_new_char("java/lang/String"));
- class_java_lang_Cloneable = class_new(utf_new_char("java/lang/Cloneable"));
- class_java_io_Serializable = class_new(utf_new_char("java/io/Serializable"));
-
- if (verbose) log_text("loader_init: java/lang/Object");
- /* load the classes which were created above */
- loader_load_sysclass(NULL, class_java_lang_Object->name);
-
- loader_inited = 1; /*JOWENN*/
-
- loader_load_sysclass(&class_java_lang_Throwable,
- utf_new_char("java/lang/Throwable"));
-
- create_system_exception_classes();
-
- /* create classes representing primitive types */
- create_primitive_classes();
-
- /* create classes used by the typechecker */
- create_pseudo_classes();
-
- /* correct vftbl-entries (retarded loading of class java/lang/String) */
- stringtable_update();
-
-#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
- if (stackbottom!=0)
- initLocks();
-#endif
- create_system_exception_proto_classes();
-
- loader_inited = 1;
-}
-
-
-/********************* Function: loader_initclasses ****************************
-
- Initializes all loaded but uninitialized classes
-
-*******************************************************************************/
-
-#if 0
-/* XXX TWISTI: i think we do not need this */
-void loader_initclasses ()
-{
- classinfo *c;
-
-#if defined(USE_THREADS) && defined(NATIVE_THREADS)
- pthread_mutex_lock(&compiler_mutex);
-#endif
-
- intsDisable(); /* schani */
-
- if (makeinitializations) {
- c = list_first(&linkedclasses);
- while (c) {
- class_init(c);
- c = list_next(&linkedclasses, c);
- }
- }
-
- intsRestore(); /* schani */
-
-#if defined(USE_THREADS) && defined(NATIVE_THREADS)
- pthread_mutex_unlock(&compiler_mutex);
-#endif
-}
-#endif
-
-
-static void loader_compute_class_values(classinfo *c)
-{
- classinfo *subs;
-
- c->vftbl->baseval = ++classvalue;
-
- subs = c->sub;
- while (subs != NULL) {
- loader_compute_class_values(subs);
- subs = subs->nextsub;
- }
- c->vftbl->diffval = classvalue - c->vftbl->baseval;
-
-/*
- {
- int i;
- for (i = 0; i < c->index; i++)
- printf(" ");
- printf("%3d %3d ", (int) c->vftbl->baseval, c->vftbl->diffval);
- utf_display(c->name);
- printf("\n");
- }
-*/
-}
-
-
-void loader_compute_subclasses()
-{
- classinfo *c;
-
-#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
- intsDisable(); /* schani */
-#endif
-
- c = list_first(&linkedclasses);
- while (c) {
- if (!(c->flags & ACC_INTERFACE)) {
- c->nextsub = 0;
- c->sub = 0;
- }
- c = list_next(&linkedclasses, c);
- }
-
- c = list_first(&linkedclasses);
- while (c) {
- if (!(c->flags & ACC_INTERFACE) && (c->super != NULL)) {
- c->nextsub = c->super->sub;
- c->super->sub = c;
- }
- c = list_next(&linkedclasses, c);
- }
-
- classvalue = 0;
-#if defined(USE_THREADS) && defined(NATIVE_THREADS)
- cast_lock();
-#endif
- loader_compute_class_values(class_java_lang_Object);
-#if defined(USE_THREADS) && defined(NATIVE_THREADS)
- cast_unlock();
-#endif
-
-#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
- intsRestore(); /* schani */
-#endif
-}
-
-
-/******************** function classloader_buffer ******************************
-
- sets buffer for reading classdata
-
-*******************************************************************************/
-
-void classload_buffer(u1 *buf, int len)
-{
- classbuffer = buf;
- classbuffer_size = len;
- classbuf_pos = buf - 1;
-}
-
-
-/******************** Function: loader_close ***********************************
-
- Frees all resources
-
-*******************************************************************************/
-
-void loader_close()
-{
- classinfo *c;
-
- while ((c = list_first(&unloadedclasses))) {
- list_remove(&unloadedclasses, c);
- class_free(c);
- }
- while ((c = list_first(&unlinkedclasses))) {
- list_remove(&unlinkedclasses, c);
- class_free(c);
- }
- while ((c = list_first(&linkedclasses))) {
- list_remove(&linkedclasses, c);
- class_free(c);
- }
+ /* empty */
}
projects / cacao.git / blobdiff