/* Utility macros to read Java(TM) .class files and byte codes. Copyright (C) 1996, 97-98, 1999 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU CC; see the file COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. Java and all Java-based marks are trademarks or registered trademarks of Sun Microsystems, Inc. in the United States and other countries. The Free Software Foundation is independent of Sun Microsystems, Inc. */ /* Written by Per Bothner , February 1996. */ #ifndef JCF_H #define JCF_H #include "javaop.h" #ifndef DEFUN #if defined (__STDC__) #define AND , #define PTR void * #define DEFUN(name, arglist, args) name(args) #else #define PTR char * #define AND ; #define DEFUN(name, arglist, args) name arglist args; #endif #endif /* !DEFUN */ #ifndef PROTO #if defined (__STDC__) #define PROTO(paramlist) paramlist #else #define PROTO(paramlist) () #endif #endif #ifndef JCF_u4 #define JCF_u4 unsigned long #endif #ifndef JCF_u2 #define JCF_u2 unsigned short #endif #define ALLOC (void*)malloc #define REALLOC (void*)realloc #ifndef FREE #define FREE(PTR) free(PTR) #endif #ifdef JCF_word #define JCF_word JCF_u4 #endif #define JCF_ZIP 1 #define JCF_CLASS 2 #define JCF_SOURCE 3 struct JCF; typedef int (*jcf_filbuf_t) PROTO ((struct JCF*, int needed)); typedef struct CPool { /* Available number of elements in the constants array, before it must be re-allocated. */ int capacity; /* The constant_pool_count. */ int count; uint8* tags; jword* data; } CPool; /* JCF encapsulates the state of reading a Java Class File. */ typedef struct JCF { unsigned char *buffer; unsigned char *buffer_end; unsigned char *read_ptr; unsigned char *read_end; int seen_in_zip; int java_source; int outofsynch; /* Found a class file out of synch with the matching source file. */ long zip_offset; jcf_filbuf_t filbuf; void *read_state; char *filename; char *classname; void *zipd; /* Directory entry where it was found */ JCF_u2 access_flags, this_class, super_class; CPool cpool; } JCF; /*typedef JCF* JCF_FILE;*/ /* The CPOOL macros take a (pointer to a) CPool. The JPOOL macros take a (pointer to a) JCF. Some of the latter should perhaps be deprecated or removed. */ #define CPOOL_COUNT(CPOOL) ((CPOOL)->count) #define JPOOL_SIZE(JCF) CPOOL_COUNT(&(JCF)->cpool) #define JPOOL_TAG(JCF, INDEX) ((JCF)->cpool.tags[INDEX]) /* The INDEX'th constant pool entry as a JCF_u4. */ #define CPOOL_UINT(CPOOL, INDEX) ((CPOOL)->data[INDEX]) #define JPOOL_UINT(JCF, INDEX) CPOOL_UINT(&(JCF)->cpool, INDEX) /*deprecated*/ /* The first uint16 of the INDEX'th constant pool entry. */ #define CPOOL_USHORT1(CPOOL, INDEX) ((CPOOL)->data[INDEX] & 0xFFFF) #define JPOOL_USHORT1(JCF, INDEX) CPOOL_USHORT1(&(JCF)->cpool, INDEX) /* The second uint16 of the INDEX'th constant pool entry. */ #define CPOOL_USHORT2(CPOOL, INDEX) ((CPOOL)->data[INDEX] >> 16) #define JPOOL_USHORT2(JCF, INDEX) CPOOL_USHORT2(&(JCF)->cpool, INDEX) #define JPOOL_LONG(JCF, INDEX) \ WORDS_TO_LONG (JPOOL_UINT(JCF, INDEX), JPOOL_UINT(JCF, (INDEX)+1)) #define JPOOL_DOUBLE(JCF, INDEX) \ WORDS_TO_DOUBLE (JPOOL_UINT(JCF, INDEX), JPOOL_UINT(JCF, (INDEX)+1)) #ifndef JPOOL_UTF_LENGTH #define JPOOL_UTF_LENGTH(JCF, INDEX) \ GET_u2 ((JCF)->buffer+JPOOL_UINT(JCF, INDEX)) #endif #ifndef JPOOL_UTF_DATA #define JPOOL_UTF_DATA(JCF, INDEX) \ ((JCF)->buffer+JPOOL_UINT(JCF, INDEX)+2) #endif #define JPOOL_INT(JCF, INDEX) ((jint) JPOOL_UINT (JCF, INDEX)) #define JPOOL_FLOAT(JCF, INDEX) WORD_TO_FLOAT (JPOOL_UINT (JCF, INDEX)) #define CPOOL_INDEX_IN_RANGE(CPOOL, INDEX) \ ((INDEX) > 0 && (INDEX) < CPOOL_COUNT(CPOOL)) #define CPOOL_FINISH(CPOOL) { \ if ((CPOOL)->tags) FREE ((CPOOL)->tags); \ if ((CPOOL)->data) FREE ((CPOOL)->data); } #define JCF_FINISH(JCF) { \ CPOOL_FINISH(&(JCF)->cpool); \ if ((JCF)->buffer) FREE ((JCF)->buffer); \ if ((JCF)->filename) FREE ((JCF)->filename); \ if ((JCF)->classname) FREE ((JCF)->classname); } #define CPOOL_INIT(CPOOL) \ ((CPOOL)->capacity = 0, (CPOOL)->count = 0, (CPOOL)->tags = 0, (CPOOL)->data = 0) #define CPOOL_REINIT(CPOOL) ((CPOOL)->count = 0) #define JCF_ZERO(JCF) \ ((JCF)->buffer = (JCF)->buffer_end = (JCF)->read_ptr = (JCF)->read_end = 0,\ (JCF)->read_state = 0, (JCF)->filename = (JCF)->classname = 0, \ CPOOL_INIT(&(JCF)->cpool), (JCF)->java_source = 0) /* Given that PTR points to a 2-byte unsigned integer in network (big-endian) byte-order, return that integer. */ #define GET_u2(PTR) (((PTR)[0] << 8) | ((PTR)[1])) /* Like GET_u2, but for little-endian format. */ #define GET_u2_le(PTR) (((PTR)[1] << 8) | ((PTR)[0])) /* Given that PTR points to a 4-byte unsigned integer in network (big-endian) byte-order, return that integer. */ #define GET_u4(PTR) (((JCF_u4)(PTR)[0] << 24) | ((JCF_u4)(PTR)[1] << 16) \ | ((JCF_u4)(PTR)[2] << 8) | ((JCF_u4)(PTR)[3])) /* Like GET_u4, but for little-endian order. */ #define GET_u4_le(PTR) (((JCF_u4)(PTR)[3] << 24) | ((JCF_u4)(PTR)[2] << 16) \ | ((JCF_u4)(PTR)[1] << 8) | ((JCF_u4)(PTR)[0])) /* Make sure there are COUNT bytes readable. */ #define JCF_FILL(JCF, COUNT) \ ((JCF)->read_end-(JCF)->read_ptr >= (COUNT) ? 0 : (*(JCF)->filbuf)(JCF, COUNT)) #define JCF_GETC(JCF) (JCF_FILL(JCF, 1) ? -1 : *(JCF)->read_ptr++) #define JCF_READ(JCF, BUFFER, N) \ (memcpy (BUFFER, (JCF)->read_ptr, N), (JCF)->read_ptr += (N)) #define JCF_SKIP(JCF,N) ((JCF)->read_ptr += (N)) #define JCF_readu(JCF) (*(JCF)->read_ptr++) /* Reads an unsigned 2-byte integer in network (big-endian) byte-order from JCF. Returns that integer. Does not check for EOF (make sure to call JCF_FILL before-hand). */ #define JCF_readu2(JCF) ((JCF)->read_ptr += 2, GET_u2 ((JCF)->read_ptr-2)) #define JCF_readu2_le(JCF) ((JCF)->read_ptr += 2, GET_u2_le((JCF)->read_ptr-2)) /* Like JCF_readu2, but read a 4-byte unsigned integer. */ #define JCF_readu4(JCF) ((JCF)->read_ptr += 4, GET_u4 ((JCF)->read_ptr-4)) #define JCF_readu4_le(JCF) ((JCF)->read_ptr += 4, GET_u4_le((JCF)->read_ptr-4)) #define JCF_TELL(JCF) ((JCF)->read_ptr - (JCF)->buffer) #define JCF_SEEK(JCF, POS) ((JCF)->read_ptr = (JCF)->buffer + (POS)) #define ACC_PUBLIC 0x0001 #define ACC_PRIVATE 0x0002 #define ACC_PROTECTED 0x0004 #define ACC_STATIC 0x0008 #define ACC_FINAL 0x0010 #define ACC_SYNCHRONIZED 0x0020 #define ACC_SUPER 0x0020 #define ACC_VOLATILE 0x0040 #define ACC_TRANSIENT 0x0080 #define ACC_NATIVE 0x0100 #define ACC_INTERFACE 0x0200 #define ACC_ABSTRACT 0x0400 #define CONSTANT_Class 7 #define CONSTANT_Fieldref 9 #define CONSTANT_Methodref 10 #define CONSTANT_InterfaceMethodref 11 #define CONSTANT_String 8 #define CONSTANT_Integer 3 #define CONSTANT_Float 4 #define CONSTANT_Long 5 #define CONSTANT_Double 6 #define CONSTANT_NameAndType 12 #define CONSTANT_Utf8 1 #define CONSTANT_Unicode 2 #define DEFAULT_CLASS_PATH "." extern char *find_class PROTO ((const char *, int, JCF*, int)); extern char *find_classfile PROTO ((char *, JCF*, const char *)); extern int jcf_filbuf_from_stdio PROTO ((JCF *jcf, int count)); extern void jcf_out_of_synch PROTO((JCF *)); extern int jcf_unexpected_eof PROTO ((JCF*, int)); /* Extract a character from a Java-style Utf8 string. * PTR points to the current character. * LIMIT points to the end of the Utf8 string. * PTR is incremented to point after the character thta gets returns. * On an error, -1 is returned. */ #define UTF8_GET(PTR, LIMIT) \ ((PTR) >= (LIMIT) ? -1 \ : *(PTR) < 128 ? *(PTR)++ \ : (*(PTR)&0xE0) == 0xC0 && ((PTR)+=2)<=(LIMIT) && ((PTR)[-1]&0xC0) == 0x80 \ ? (((PTR)[-2] & 0x1F) << 6) + ((PTR)[-1] & 0x3F) \ : (*(PTR) & 0xF0) == 0xE0 && ((PTR) += 3) <= (LIMIT) \ && ((PTR)[-2] & 0xC0) == 0x80 && ((PTR)[-1] & 0xC0) == 0x80 \ ? (((PTR)[-3]&0x0F) << 12) + (((PTR)[-2]&0x3F) << 6) + ((PTR)[-1]&0x3F) \ : ((PTR)++, -1)) extern char *jcf_write_base_directory; /* Debug macros, for the front end */ extern int quiet_flag; #ifdef VERBOSE_SKELETON #undef SOURCE_FRONTEND_DEBUG #define SOURCE_FRONTEND_DEBUG(X) \ {if (!quiet_flag) {printf ("* "); printf X; putchar ('\n');} } #else #define SOURCE_FRONTEND_DEBUG(X) #endif /* Declarations for dependency code. */ extern void jcf_dependency_reset PROTO ((void)); extern void jcf_dependency_set_target PROTO ((char *)); extern void jcf_dependency_add_target PROTO ((char *)); extern void jcf_dependency_set_dep_file PROTO ((const char *)); extern void jcf_dependency_add_file PROTO ((const char *, int)); extern void jcf_dependency_write PROTO ((void)); extern void jcf_dependency_init PROTO ((int)); /* Declarations for path handling code. */ extern void jcf_path_init PROTO ((void)); extern void jcf_path_classpath_arg PROTO ((char *)); extern void jcf_path_CLASSPATH_arg PROTO ((char *)); extern void jcf_path_include_arg PROTO ((char *)); extern void jcf_path_seal PROTO ((void)); extern void *jcf_path_start PROTO ((void)); extern void *jcf_path_next PROTO ((void *)); extern char *jcf_path_name PROTO ((void *)); extern int jcf_path_is_zipfile PROTO ((void *)); extern int jcf_path_is_system PROTO ((void *)); extern int jcf_path_max_len PROTO ((void)); #endif