72f339d273
2003-03-16 Mohan Embar <gnustuff@thisiscool.com>
* Make-lang.in: added win32-host.c
* jcf.h: defined macro JCF_OPEN_EXACT_CASE which
resolves to open() on non-Win32 platforms and
Win32-specific jcf_open_exact_case() on Win32
* jcf-io.c (find_class): use JCF_OPEN_EXACT_CASE
when trying .java and .class files
* win32-host.c: added to repository. Defines
Win32-specific jcf_open_exact_case()
2003-04-10 Andrew Haley <aph@redhat.com>
* jcf-write.c (struct jcf_partial): num_jsrs: new field.
(maybe_free_localvar): Renamed from localvar_free.
Add new arg, really.
(generate_bytecode_insns): Set new variable, jsrs.
Only free local vars if no jsr insns have been emittted.
Call maybe_free_localvar, not localvar_free.
From-SVN: r65430
318 lines
11 KiB
C
318 lines
11 KiB
C
/* Utility macros to read Java(TM) .class files and byte codes.
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Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
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Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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Java and all Java-based marks are trademarks or registered trademarks
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of Sun Microsystems, Inc. in the United States and other countries.
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The Free Software Foundation is independent of Sun Microsystems, Inc. */
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/* Written by Per Bothner <bothner@cygnus.com>, February 1996. */
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#ifndef GCC_JCF_H
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#define GCC_JCF_H
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#include "javaop.h"
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#ifndef JCF_u4
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#define JCF_u4 unsigned long
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#endif
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#ifndef JCF_u2
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#define JCF_u2 unsigned short
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#endif
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#define ALLOC xmalloc
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#define REALLOC xrealloc
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#ifndef FREE
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#define FREE(PTR) free(PTR)
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#endif
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#ifdef JCF_word
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#define JCF_word JCF_u4
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#endif
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/* If we have both "scandir" and "alphasort", we can cache directory
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listings to reduce the time taken to search the classpath. */
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#if defined(HAVE_SCANDIR) && defined(HAVE_ALPHASORT)
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#define JCF_USE_SCANDIR 1
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#else
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#define JCF_USE_SCANDIR 0
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#endif
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/* On case-insensitive file systems, file name components must be
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compared using "strcasecmp", if available, instead of "strcmp".
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Assumes "config.h" has already been included. */
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#if defined (HAVE_DOS_BASED_FILE_SYSTEM) && defined (HAVE_STRCASECMP)
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#define COMPARE_FILENAMES(X, Y) strcasecmp ((X), (Y))
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#else
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#define COMPARE_FILENAMES(X, Y) strcmp ((X), (Y))
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#endif
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/* On case-insensitive file systems, we need to ensure that a request
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to open a .java or .class file is honored only if the file to be
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opened is of the exact case we are asking for. In other words, we
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want to override the inherent case insensitivity of the underlying
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file system. On other platforms, this macro becomes the vanilla
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open() call.
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If you want to add another host, add your define to the list below
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(i.e. defined(WIN32) || defined(YOUR_HOST)) and add an host-specific
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.c file to Make-lang.in similar to win32-host.c */
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#if defined(WIN32)
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extern int
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jcf_open_exact_case (const char* filename, int oflag);
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#define JCF_OPEN_EXACT_CASE(X, Y) jcf_open_exact_case (X, Y)
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#else
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#define JCF_OPEN_EXACT_CASE open
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#endif /* WIN32 */
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struct JCF;
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typedef int (*jcf_filbuf_t) PARAMS ((struct JCF*, int needed));
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union cpool_entry GTY(()) {
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jword GTY ((tag ("0"))) w;
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tree GTY ((tag ("1"))) t;
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};
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#define cpool_entry_is_tree(tag) \
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(tag & CONSTANT_ResolvedFlag) || tag == CONSTANT_Utf8
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typedef struct CPool GTY(()) {
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/* Available number of elements in the constants array, before it
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must be re-allocated. */
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int capacity;
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/* The constant_pool_count. */
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int count;
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uint8* GTY((length ("%h.count"))) tags;
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union cpool_entry * GTY((length ("%h.count"),
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desc ("cpool_entry_is_tree (%1.tags%a)"))) data;
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} CPool;
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struct ZipDirectory;
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/* JCF encapsulates the state of reading a Java Class File. */
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typedef struct JCF GTY(()) {
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unsigned char * GTY ((skip (""))) buffer;
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unsigned char * GTY ((skip (""))) buffer_end;
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unsigned char * GTY ((skip (""))) read_ptr;
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unsigned char * GTY ((skip (""))) read_end;
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int java_source : 1;
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int right_zip : 1;
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int finished : 1;
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jcf_filbuf_t filbuf;
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PTR GTY ((skip (""))) read_state;
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const char *filename;
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const char *classname;
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/* Directory entry where it was found. */
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struct ZipDirectory * GTY ((skip (""))) zipd;
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JCF_u2 access_flags;
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JCF_u2 this_class;
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JCF_u2 super_class;
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CPool cpool;
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} JCF;
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/*typedef JCF* JCF_FILE;*/
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#define JCF_SEEN_IN_ZIP(JCF) ((JCF)->zipd != NULL)
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/* The CPOOL macros take a (pointer to a) CPool.
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The JPOOL macros take a (pointer to a) JCF.
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Some of the latter should perhaps be deprecated or removed. */
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#define CPOOL_COUNT(CPOOL) ((CPOOL)->count)
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#define JPOOL_SIZE(JCF) CPOOL_COUNT(&(JCF)->cpool)
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#define JPOOL_TAG(JCF, INDEX) ((JCF)->cpool.tags[INDEX])
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/* The INDEX'th constant pool entry as a JCF_u4. */
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#define CPOOL_UINT(CPOOL, INDEX) ((CPOOL)->data[INDEX].w)
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#define JPOOL_UINT(JCF, INDEX) CPOOL_UINT(&(JCF)->cpool, INDEX) /*deprecated*/
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/* The first uint16 of the INDEX'th constant pool entry. */
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#define CPOOL_USHORT1(CPOOL, INDEX) ((CPOOL)->data[INDEX].w & 0xFFFF)
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#define JPOOL_USHORT1(JCF, INDEX) CPOOL_USHORT1(&(JCF)->cpool, INDEX)
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/* The second uint16 of the INDEX'th constant pool entry. */
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#define CPOOL_USHORT2(CPOOL, INDEX) ((CPOOL)->data[INDEX].w >> 16)
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#define JPOOL_USHORT2(JCF, INDEX) CPOOL_USHORT2(&(JCF)->cpool, INDEX)
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#define JPOOL_LONG(JCF, INDEX) \
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WORDS_TO_LONG (JPOOL_UINT(JCF, INDEX), JPOOL_UINT(JCF, (INDEX)+1))
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#define JPOOL_DOUBLE(JCF, INDEX) \
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WORDS_TO_DOUBLE (JPOOL_UINT(JCF, INDEX), JPOOL_UINT(JCF, (INDEX)+1))
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#ifndef JPOOL_UTF_LENGTH
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#define JPOOL_UTF_LENGTH(JCF, INDEX) \
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GET_u2 ((JCF)->buffer+JPOOL_UINT(JCF, INDEX))
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#endif
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#ifndef JPOOL_UTF_DATA
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#define JPOOL_UTF_DATA(JCF, INDEX) \
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((JCF)->buffer+JPOOL_UINT(JCF, INDEX)+2)
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#endif
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#define JPOOL_INT(JCF, INDEX) (WORD_TO_INT(JPOOL_UINT (JCF, INDEX)))
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#define JPOOL_FLOAT(JCF, INDEX) WORD_TO_FLOAT (JPOOL_UINT (JCF, INDEX))
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#define CPOOL_INDEX_IN_RANGE(CPOOL, INDEX) \
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((INDEX) > 0 && (INDEX) < CPOOL_COUNT(CPOOL))
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#define CPOOL_FINISH(CPOOL) { \
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(CPOOL)->tags = 0; \
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(CPOOL)->data = 0; \
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}
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#define JCF_FINISH(JCF) { \
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CPOOL_FINISH(&(JCF)->cpool); \
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if ((JCF)->buffer) FREE ((JCF)->buffer); \
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if ((JCF)->filename) FREE ((char *) (JCF)->filename); \
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if ((JCF)->classname) FREE ((char *) (JCF)->classname); \
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(JCF)->finished = 1; }
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#define CPOOL_INIT(CPOOL) \
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((CPOOL)->capacity = 0, (CPOOL)->count = 0, (CPOOL)->tags = 0, (CPOOL)->data = 0)
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#define CPOOL_REINIT(CPOOL) ((CPOOL)->count = 0)
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#define JCF_ZERO(JCF) \
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((JCF)->buffer = (JCF)->buffer_end = (JCF)->read_ptr = (JCF)->read_end = 0,\
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(JCF)->read_state = 0, (JCF)->filename = (JCF)->classname = 0, \
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CPOOL_INIT(&(JCF)->cpool), (JCF)->java_source = 0, (JCF)->zipd = 0, \
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(JCF)->finished = 0)
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/* Given that PTR points to a 2-byte unsigned integer in network
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(big-endian) byte-order, return that integer. */
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#define GET_u2(PTR) (((PTR)[0] << 8) | ((PTR)[1]))
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/* Like GET_u2, but for little-endian format. */
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#define GET_u2_le(PTR) (((PTR)[1] << 8) | ((PTR)[0]))
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/* Given that PTR points to a 4-byte unsigned integer in network
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(big-endian) byte-order, return that integer. */
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#define GET_u4(PTR) (((JCF_u4)(PTR)[0] << 24) | ((JCF_u4)(PTR)[1] << 16) \
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| ((JCF_u4)(PTR)[2] << 8) | ((JCF_u4)(PTR)[3]))
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/* Like GET_u4, but for little-endian order. */
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#define GET_u4_le(PTR) (((JCF_u4)(PTR)[3] << 24) | ((JCF_u4)(PTR)[2] << 16) \
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| ((JCF_u4)(PTR)[1] << 8) | ((JCF_u4)(PTR)[0]))
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/* Make sure there are COUNT bytes readable. */
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#define JCF_FILL(JCF, COUNT) \
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((JCF)->read_end-(JCF)->read_ptr >= (COUNT) ? 0 : (*(JCF)->filbuf)(JCF, COUNT))
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#define JCF_GETC(JCF) (JCF_FILL(JCF, 1) ? -1 : *(JCF)->read_ptr++)
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#define JCF_READ(JCF, BUFFER, N) \
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(memcpy (BUFFER, (JCF)->read_ptr, N), (JCF)->read_ptr += (N))
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#define JCF_SKIP(JCF,N) ((JCF)->read_ptr += (N))
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#define JCF_readu(JCF) (*(JCF)->read_ptr++)
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/* Reads an unsigned 2-byte integer in network (big-endian) byte-order
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from JCF. Returns that integer.
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Does not check for EOF (make sure to call JCF_FILL before-hand). */
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#define JCF_readu2(JCF) ((JCF)->read_ptr += 2, GET_u2 ((JCF)->read_ptr-2))
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#define JCF_readu2_le(JCF) ((JCF)->read_ptr += 2, GET_u2_le((JCF)->read_ptr-2))
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/* Like JCF_readu2, but read a 4-byte unsigned integer. */
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#define JCF_readu4(JCF) ((JCF)->read_ptr += 4, GET_u4 ((JCF)->read_ptr-4))
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#define JCF_readu4_le(JCF) ((JCF)->read_ptr += 4, GET_u4_le((JCF)->read_ptr-4))
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#define JCF_TELL(JCF) ((JCF)->read_ptr - (JCF)->buffer)
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#define JCF_SEEK(JCF, POS) ((JCF)->read_ptr = (JCF)->buffer + (POS))
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#define ACC_PUBLIC 0x0001
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#define ACC_PRIVATE 0x0002
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#define ACC_PROTECTED 0x0004
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#define ACC_STATIC 0x0008
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#define ACC_FINAL 0x0010
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#define ACC_SYNCHRONIZED 0x0020
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#define ACC_SUPER 0x0020
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#define ACC_VOLATILE 0x0040
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#define ACC_TRANSIENT 0x0080
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#define ACC_NATIVE 0x0100
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#define ACC_INTERFACE 0x0200
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#define ACC_ABSTRACT 0x0400
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#define ACC_STRICT 0x0800
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#define ACC_VISIBILITY (ACC_PUBLIC | ACC_PRIVATE | ACC_PROTECTED)
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#define CONSTANT_Class 7
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#define CONSTANT_Fieldref 9
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#define CONSTANT_Methodref 10
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#define CONSTANT_InterfaceMethodref 11
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#define CONSTANT_String 8
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#define CONSTANT_Integer 3
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#define CONSTANT_Float 4
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#define CONSTANT_Long 5
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#define CONSTANT_Double 6
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#define CONSTANT_NameAndType 12
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#define CONSTANT_Utf8 1
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#define CONSTANT_Unicode 2
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#define DEFAULT_CLASS_PATH "."
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extern const char *find_class (const char *, int, JCF*, int);
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extern const char *find_classfile (char *, JCF*, const char *);
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extern int jcf_filbuf_from_stdio (JCF *jcf, int count);
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extern int jcf_unexpected_eof (JCF*, int) ATTRIBUTE_NORETURN;
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/* Extract a character from a Java-style Utf8 string.
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* PTR points to the current character.
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* LIMIT points to the end of the Utf8 string.
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* PTR is incremented to point after the character that gets returned.
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* On an error, -1 is returned. */
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#define UTF8_GET(PTR, LIMIT) \
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((PTR) >= (LIMIT) ? -1 \
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: *(PTR) < 128 ? *(PTR)++ \
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: (*(PTR)&0xE0) == 0xC0 && ((PTR)+=2)<=(LIMIT) && ((PTR)[-1]&0xC0) == 0x80 \
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? (((PTR)[-2] & 0x1F) << 6) + ((PTR)[-1] & 0x3F) \
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: (*(PTR) & 0xF0) == 0xE0 && ((PTR) += 3) <= (LIMIT) \
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&& ((PTR)[-2] & 0xC0) == 0x80 && ((PTR)[-1] & 0xC0) == 0x80 \
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? (((PTR)[-3]&0x0F) << 12) + (((PTR)[-2]&0x3F) << 6) + ((PTR)[-1]&0x3F) \
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: ((PTR)++, -1))
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extern char *jcf_write_base_directory;
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/* Debug macros, for the front end */
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extern int quiet_flag;
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#ifdef VERBOSE_SKELETON
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#undef SOURCE_FRONTEND_DEBUG
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#define SOURCE_FRONTEND_DEBUG(X) \
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{if (!quiet_flag) {printf ("* "); printf X; putchar ('\n');} }
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#else
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#define SOURCE_FRONTEND_DEBUG(X)
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#endif
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/* Declarations for dependency code. */
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extern void jcf_dependency_reset (void);
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extern void jcf_dependency_set_target (const char *);
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extern void jcf_dependency_add_target (const char *);
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extern void jcf_dependency_set_dep_file (const char *);
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extern void jcf_dependency_add_file (const char *, int);
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extern void jcf_dependency_write (void);
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extern void jcf_dependency_init (int);
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extern void jcf_dependency_print_dummies (void);
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/* Declarations for path handling code. */
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extern void jcf_path_init (void);
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extern void jcf_path_classpath_arg (const char *);
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extern void jcf_path_bootclasspath_arg (const char *);
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extern void jcf_path_extdirs_arg (const char *);
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extern void jcf_path_include_arg (const char *);
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extern void jcf_path_seal (int);
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extern void *jcf_path_start (void);
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extern void *jcf_path_next (void *);
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extern char *jcf_path_name (void *);
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extern int jcf_path_is_zipfile (void *);
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extern int jcf_path_is_system (void *);
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extern int jcf_path_max_len (void);
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#endif /* ! GCC_JCF_H */
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