1102 lines
33 KiB
C
1102 lines
33 KiB
C
/* Program to dump out a Java(TM) .class file.
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Functionally similar to Sun's javap.
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Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
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This program 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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This program 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 GNU CC; 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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/*
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jcf-dump is a program to print out the contents of class files.
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Usage: jcf-dump [FLAGS] CLASS
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Each CLASS is either:
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+ the name of a class in the CLASSPATH (e.g "java.lang.String"), or
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+ the name of a class *file* (e.g. "/home/me/work/package/Foo.class").
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+ The name of a .zip or .jar file (which prints all the classes in the
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archive).
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OPTIONS:
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-c
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Dis-assemble each method.
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-classpath PATH
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Overrides $CLASSPATH.
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--print-main
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Print nothing if there is no valid "main" method;
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otherwise, print only the class name.
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--javap
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Print output in the style of Sun's javap program. VERY UNFINISHED.
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*/
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#include "config.h"
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#include "system.h"
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#include "jcf.h"
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#include "tree.h"
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#include "java-tree.h"
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/* Outout file. */
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FILE *out;
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/* Name of output file, if NULL if stdout. */
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char *output_file = NULL;
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int verbose = 0;
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int flag_disassemble_methods = 0;
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int flag_print_class_info = 1;
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int flag_print_constant_pool = 1;
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int flag_print_fields = 1;
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int flag_print_methods = 1;
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int flag_print_attributes = 1;
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/* Print names of classes that have a "main" method. */
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int flag_print_main = 0;
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/* Index in constant pool of this class. */
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int this_class_index = 0;
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int class_access_flags = 0;
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/* Print in format similar to javap. VERY IMCOMPLETE. */
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int flag_javap_compatible = 0;
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static int print_access_flags PROTO ((FILE *, uint16, char));
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static void print_constant_terse PROTO ((FILE*, JCF*, int, int));
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static void print_constant PROTO ((FILE *, JCF *, int, int));
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static void print_constant_ref PROTO ((FILE *, JCF *, int));
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static void disassemble_method PROTO ((JCF*, unsigned char *, int));
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static void print_name PROTO ((FILE*, JCF*, int));
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static void print_signature PROTO ((FILE*, JCF*, int, int));
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static int utf8_equal_string PROTO ((struct JCF*, int, const char *));
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static int usage PROTO ((void));
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static void process_class PROTO ((struct JCF *));
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#define PRINT_SIGNATURE_RESULT_ONLY 1
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#define PRINT_SIGNATURE_ARGS_ONLY 2
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static int
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DEFUN(utf8_equal_string, (jcf, index, value),
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JCF *jcf AND int index AND const char * value)
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{
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if (CPOOL_INDEX_IN_RANGE (&jcf->cpool, index)
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&& JPOOL_TAG (jcf, index) == CONSTANT_Utf8)
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{
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int len = strlen (value);
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if (JPOOL_UTF_LENGTH (jcf, index) == len
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&& memcmp (JPOOL_UTF_DATA (jcf, index), value, len) == 0)
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return 1;
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}
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return 0;
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}
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#define HANDLE_MAGIC(MAGIC, MINOR, MAJOR) \
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this_class_index = 0; \
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if (flag_print_class_info) \
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fprintf (out, \
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"Magic number: 0x%0lx, minor_version: %ld, major_version: %ld.\n",\
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(long) MAGIC, (long) MINOR, (long) MAJOR)
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#define HANDLE_START_CONSTANT_POOL(COUNT) \
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if (flag_print_constant_pool) \
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fprintf (out, "\nConstant pool (count: %d):\n", COUNT)
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#define HANDLE_SOURCEFILE(INDEX) \
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{ fprintf (out, "Attribute "); \
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print_constant_terse (out, jcf, attribute_name, CONSTANT_Utf8); \
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fprintf (out, ", length:%ld, #%d=", (long) attribute_length, INDEX); \
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print_constant_terse (out, jcf, INDEX, CONSTANT_Utf8); fputc ('\n', out); }
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#define HANDLE_CLASS_INFO(ACCESS_FLAGS, THIS, SUPER, INTERFACES_COUNT) \
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this_class_index = THIS; \
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class_access_flags = ACCESS_FLAGS; \
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if (flag_print_class_info) \
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{ fprintf (out, "\nAccess flags: 0x%x", ACCESS_FLAGS); \
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print_access_flags (out, ACCESS_FLAGS, 'c'); \
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fputc ('\n', out); \
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fprintf (out, "This class: "); \
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if (flag_print_constant_pool) \
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fprintf (out, "%d=", THIS); \
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print_constant_terse (out, jcf, THIS, CONSTANT_Class); \
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if (flag_print_constant_pool || SUPER != 0) \
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fprintf (out, ", super: "); \
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if (flag_print_constant_pool) \
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{ \
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fprintf (out, "%d", SUPER); \
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if (SUPER != 0) \
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fputc ('=', out); \
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} \
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if (SUPER != 0) \
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print_constant_terse (out, jcf, SUPER, CONSTANT_Class); \
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fprintf (out, "\nInterfaces (count: %d):\n", INTERFACES_COUNT); \
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}
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#define IGNORE_ATTRIBUTE(JCF, NAME, NAME_LENGTH) \
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(flag_print_attributes <= 0)
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#define HANDLE_CLASS_INTERFACE(INDEX) \
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if (flag_print_class_info) \
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{ fprintf (out, "- Implements: %d=", INDEX); \
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print_constant_terse (out, jcf, INDEX, CONSTANT_Class); \
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fputc ('\n', out); }
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#define HANDLE_START_FIELDS(FIELDS_COUNT) \
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if (flag_print_fields) \
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fprintf (out, "\nFields (count: %d):\n", FIELDS_COUNT)
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#define HANDLE_START_FIELD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
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if (flag_print_fields) \
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{ fprintf (out, "Field name:"); \
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print_constant_terse (out, jcf, NAME, CONSTANT_Utf8); \
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print_access_flags (out, ACCESS_FLAGS, 'f'); \
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fprintf (out, " Signature: "); \
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if (flag_print_constant_pool) \
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fprintf (out, "%d=", SIGNATURE); \
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print_signature (out, jcf, SIGNATURE, 0); \
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fputc ('\n', out); } \
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else \
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flag_print_attributes--;
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#define HANDLE_END_FIELD() \
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if (! flag_print_fields) \
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flag_print_attributes++;
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#define HANDLE_START_METHODS(METHODS_COUNT) \
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if (flag_print_methods) \
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fprintf (out, "\nMethods (count: %d):\n", METHODS_COUNT); \
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else \
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flag_print_attributes--;
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#define HANDLE_END_METHODS() \
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if (! flag_print_methods) \
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flag_print_attributes++;
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#define HANDLE_METHOD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
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{ \
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if (flag_print_methods) \
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{ \
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if (flag_javap_compatible) \
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{ \
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fprintf (out, " "); \
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print_access_flags (out, ACCESS_FLAGS, 'm'); \
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fputc (' ', out); \
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print_signature (out, jcf, SIGNATURE, PRINT_SIGNATURE_RESULT_ONLY); \
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fputc (' ', out); \
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print_constant_terse (out, jcf, NAME, CONSTANT_Utf8); \
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print_signature (out, jcf, SIGNATURE, PRINT_SIGNATURE_ARGS_ONLY); \
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fputc ('\n', out); \
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} \
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else \
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{ \
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fprintf (out, "\nMethod name:"); \
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print_constant_terse (out, jcf, NAME, CONSTANT_Utf8); \
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print_access_flags (out, ACCESS_FLAGS, 'm'); \
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fprintf (out, " Signature: "); \
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if (flag_print_constant_pool) \
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fprintf (out, "%d=", SIGNATURE); \
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print_signature (out, jcf, SIGNATURE, 0); \
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fputc ('\n', out); \
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} \
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} \
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if (flag_print_main && ACCESS_FLAGS == (ACC_STATIC|ACC_PUBLIC) \
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&& utf8_equal_string (jcf, NAME, "main") \
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&& utf8_equal_string (jcf, SIGNATURE, "([Ljava/lang/String;)V") \
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&& this_class_index > 0 \
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&& (class_access_flags & ACC_PUBLIC)) \
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{ \
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print_constant_terse(out, jcf, this_class_index, CONSTANT_Class); \
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fputc ('\n', out); \
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} \
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}
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#define COMMON_HANDLE_ATTRIBUTE(JCF, INDEX, LENGTH) \
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( fprintf (out, "Attribute "), \
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print_constant_terse (out, jcf, INDEX, CONSTANT_Utf8), \
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fprintf (out, ", length:%ld", (long) LENGTH) )
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#define HANDLE_CONSTANTVALUE(VALUE_INDEX) \
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( COMMON_HANDLE_ATTRIBUTE(JCF, attribute_name, attribute_length), \
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fprintf (out, ", value: "), \
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print_constant_ref (out, jcf, VALUE_INDEX), \
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fprintf (out, "\n") )
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#define HANDLE_CODE_ATTRIBUTE(MAX_STACK, MAX_LOCALS, CODE_LENGTH) \
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{ COMMON_HANDLE_ATTRIBUTE(JCF, attribute_name, attribute_length); \
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fprintf (out, ", max_stack:%ld, max_locals:%ld, code_length:%ld\n", \
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(long) MAX_STACK, (long) MAX_LOCALS, (long) CODE_LENGTH); \
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disassemble_method (jcf, jcf->read_ptr, CODE_LENGTH); }
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#define HANDLE_EXCEPTION_TABLE(ENTRIES, COUNT) \
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print_exception_table (jcf, ENTRIES, COUNT)
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#define HANDLE_EXCEPTIONS_ATTRIBUTE(COUNT) \
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{ int n = (COUNT); int i; \
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COMMON_HANDLE_ATTRIBUTE(JCF, attribute_name, attribute_length); \
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fprintf (out, ", count: %d\n", n); \
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for (i = 0; i < n; i++) {\
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int ex_index = JCF_readu2 (jcf); \
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fprintf (out, "%3d: ", i); \
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print_constant_ref (out, jcf, ex_index); \
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fputc ('\n', out); } }
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#define HANDLE_LOCALVARIABLETABLE_ATTRIBUTE(COUNT) \
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{ int n = (COUNT); int i; \
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COMMON_HANDLE_ATTRIBUTE(JCF, attribute_name, attribute_length); \
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fprintf (out, ", count: %d\n", n); \
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for (i = 0; i < n; i++) {\
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int start_pc = JCF_readu2 (jcf); \
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int length = JCF_readu2 (jcf); \
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int name_index = JCF_readu2 (jcf); \
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int signature_index = JCF_readu2 (jcf); \
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int slot = JCF_readu2 (jcf); \
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fprintf (out, " slot#%d: name: %d=", slot, name_index); \
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print_name (out, jcf, name_index); \
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fprintf (out, ", type: %d=", signature_index); \
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print_signature (out, jcf, signature_index, 0); \
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fprintf (out, " (pc: %d length: %d)\n", start_pc, length); }}
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#define HANDLE_LINENUMBERTABLE_ATTRIBUTE(COUNT) \
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{ int n = (COUNT); int i; \
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COMMON_HANDLE_ATTRIBUTE(jcf, attribute_name, attribute_length); \
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fprintf (out, ", count: %d\n", n); \
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if (flag_disassemble_methods) \
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for (i = 0; i < n; i++) {\
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int start_pc = JCF_readu2 (jcf); \
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int line_number = JCF_readu2 (jcf); \
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fprintf (out, " line: %d at pc: %d\n", line_number, start_pc); }\
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else \
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JCF_SKIP (jcf, 4 * n); }
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#define PROCESS_OTHER_ATTRIBUTE(JCF, INDEX, LENGTH) \
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{ COMMON_HANDLE_ATTRIBUTE(JCF, INDEX, LENGTH); \
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fputc ('\n', out); JCF_SKIP (JCF, LENGTH); }
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#define START_FINAL_ATTRIBUTES(ATTRIBUTES_COUNT) \
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if (flag_print_attributes > 0) \
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fprintf (out, "\nAttributes (count: %d):\n", attributes_count);
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#include "javaop.h"
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static void
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DEFUN(print_constant_ref, (stream, jcf, index),
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FILE *stream AND JCF *jcf AND int index)
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{
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fprintf (stream, "#%d=<", index);
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if (index <= 0 || index >= JPOOL_SIZE(jcf))
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fprintf (stream, "out of range");
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else
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print_constant (stream, jcf, index, 1);
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fprintf (stream, ">");
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}
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/* Print the access flags given by FLAGS.
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The CONTEXT is one of 'c' (class flags), 'f' (field flags),
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or 'm' (method flags). */
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static int
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DEFUN (print_access_flags, (stream, flags, context),
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FILE *stream AND uint16 flags AND char context)
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{
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if (flags & ACC_PUBLIC) fprintf (stream, " public");
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if (flags & ACC_PRIVATE) fprintf (stream, " private");
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if (flags & ACC_PROTECTED) fprintf (stream, " protected");
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if (flags & ACC_STATIC) fprintf (stream, " static");
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if (flags & ACC_FINAL) fprintf (stream, " final");
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if (flags & ACC_SYNCHRONIZED)
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{
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if (context == 'c')
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fprintf (stream, " super");
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else
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fprintf (stream, " synchronized");
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}
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if (flags & ACC_VOLATILE) fprintf (stream, " volatile");
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if (flags & ACC_TRANSIENT) fprintf (stream, " transient");
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if (flags & ACC_NATIVE) fprintf (stream, " native");
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if (flags & ACC_INTERFACE) fprintf (stream, " interface");
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if (flags & ACC_ABSTRACT) fprintf (stream, " abstract");
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}
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static void
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DEFUN(print_name, (stream, jcf, name_index),
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FILE* stream AND JCF* jcf AND int name_index)
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{
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if (JPOOL_TAG (jcf, name_index) != CONSTANT_Utf8)
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fprintf (stream, "<not a UTF8 constant>");
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else
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jcf_print_utf8 (stream, JPOOL_UTF_DATA (jcf,name_index),
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JPOOL_UTF_LENGTH (jcf, name_index));
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}
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/* If the type of the constant at INDEX matches EXPECTED,
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print it tersely, otherwise more verbosely. */
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static void
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DEFUN(print_constant_terse, (out, jcf, index, expected),
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FILE *out AND JCF *jcf AND int index AND int expected)
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{
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if (! CPOOL_INDEX_IN_RANGE (&jcf->cpool, index))
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fprintf (out, "<constant pool index %d not in range>", index);
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else if (JPOOL_TAG (jcf, index) != expected)
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{
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fprintf (out, "<Unexpected constant type ");
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print_constant (out, jcf, index, 1);
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fprintf (out, ">");
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}
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else
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print_constant (out, jcf, index, 0);
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}
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/* Print the constant at INDEX in JCF's constant pool.
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If verbosity==0, print very tersely (no extraneous text).
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If verbosity==1, prefix the type of the constant.
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If verbosity==2, add more descriptive text. */
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static void
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DEFUN(print_constant, (out, jcf, index, verbosity),
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FILE *out AND JCF *jcf AND int index AND int verbosity)
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{
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int j, n;
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jlong num;
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const char *str;
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int kind = JPOOL_TAG (jcf, index);
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switch (kind)
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{
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case CONSTANT_Class:
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n = JPOOL_USHORT1 (jcf, index);
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if (verbosity > 0)
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fprintf (out, verbosity > 1 ? "Class name: %d=" : "Class ", n);
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if (! CPOOL_INDEX_IN_RANGE (&jcf->cpool, n))
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fprintf (out, "<out of range>");
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else if (verbosity < 2 && JPOOL_TAG (jcf, n) == CONSTANT_Utf8)
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{
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int len = JPOOL_UTF_LENGTH (jcf, n);
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jcf_print_utf8_replace (out, JPOOL_UTF_DATA(jcf,n), len, '/', '.');
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}
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else
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print_constant_terse (out, jcf, n, CONSTANT_Utf8);
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break;
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case CONSTANT_Fieldref:
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str = "Field"; goto field_or_method;
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case CONSTANT_Methodref:
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str = "Method"; goto field_or_method;
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|
case CONSTANT_InterfaceMethodref:
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str = "InterfaceMethod"; goto field_or_method;
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|
field_or_method:
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{
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|
uint16 tclass = JPOOL_USHORT1 (jcf, index);
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uint16 name_and_type = JPOOL_USHORT2 (jcf, index);
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|
if (verbosity == 2)
|
|
fprintf (out, "%sref class: %d=", str, tclass);
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else if (verbosity > 0)
|
|
fprintf (out, "%s ", str);
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print_constant_terse (out, jcf, tclass, CONSTANT_Class);
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fprintf (out, verbosity < 2 ? "." : " name_and_type: %d=<",
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name_and_type);
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print_constant_terse (out, jcf, name_and_type, CONSTANT_NameAndType);
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|
if (verbosity == 2)
|
|
fputc ('>', out);
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}
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|
break;
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case CONSTANT_String:
|
|
j = JPOOL_USHORT1 (jcf, index);
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if (verbosity > 0)
|
|
fprintf (out, verbosity > 1 ? "String %d=" : "String ", j);
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|
print_constant_terse (out, jcf, j, CONSTANT_Utf8);
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|
break;
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case CONSTANT_Integer:
|
|
if (verbosity > 0)
|
|
fprintf (out, "Integer ");
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|
num = JPOOL_INT (jcf, index);
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|
goto integer;
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|
case CONSTANT_Long:
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|
if (verbosity > 0)
|
|
fprintf (out, "Long ");
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|
num = JPOOL_LONG (jcf, index);
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|
goto integer;
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|
integer:
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|
{
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|
char buffer[25];
|
|
format_int (buffer, num, 10);
|
|
fprintf (out, "%s", buffer);
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|
if (verbosity > 1)
|
|
{
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|
format_uint (buffer, (uint64)num, 16);
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|
fprintf (out, "=0x%s", buffer);
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|
}
|
|
}
|
|
break;
|
|
case CONSTANT_Float:
|
|
{
|
|
jfloat fnum = JPOOL_FLOAT (jcf, index);
|
|
fprintf (out, "%s%.10g", verbosity > 1 ? "Float " : "", (double) fnum);
|
|
if (verbosity > 1)
|
|
fprintf (out, ", bits = 0x%08lx", (long) (* (int32 *) &fnum));
|
|
break;
|
|
}
|
|
case CONSTANT_Double:
|
|
{
|
|
jdouble dnum = JPOOL_DOUBLE (jcf, index);
|
|
fprintf (out, "%s%.20g", verbosity > 1 ? "Double " : "", dnum);
|
|
if (verbosity > 1)
|
|
{
|
|
int32 hi, lo;
|
|
hi = JPOOL_UINT (jcf, index);
|
|
lo = JPOOL_UINT (jcf, index + 1);
|
|
fprintf (out, ", bits = 0x%08lx%08lx", (long) hi, (long) lo);
|
|
}
|
|
break;
|
|
}
|
|
case CONSTANT_NameAndType:
|
|
{
|
|
uint16 name = JPOOL_USHORT1 (jcf, index);
|
|
uint16 sig = JPOOL_USHORT2 (jcf, index);
|
|
if (verbosity > 0)
|
|
fprintf (out, verbosity > 1 ? "%s name: %d=" : "%s ",
|
|
"NameAndType", name);
|
|
print_name (out, jcf, name);
|
|
if (verbosity <= 1)
|
|
fputc (' ', out);
|
|
else
|
|
fprintf (out, ", signature: %d=", sig);
|
|
print_signature (out, jcf, sig, 0);
|
|
}
|
|
break;
|
|
case CONSTANT_Utf8:
|
|
{
|
|
register unsigned char *str = JPOOL_UTF_DATA (jcf, index);
|
|
int length = JPOOL_UTF_LENGTH (jcf, index);
|
|
if (verbosity > 0)
|
|
{ /* Print as 8-bit bytes. */
|
|
fputs ("Utf8: \"", out);
|
|
while (--length >= 0)
|
|
jcf_print_char (out, *str++);
|
|
}
|
|
else
|
|
{ /* Print as Unicode. */
|
|
fputc ('\"', out);
|
|
jcf_print_utf8 (out, str, length);
|
|
}
|
|
fputc ('\"', out);
|
|
}
|
|
break;
|
|
default:
|
|
fprintf (out, "(Unknown constant type %d)", kind);
|
|
}
|
|
}
|
|
|
|
void
|
|
DEFUN(print_constant_pool, (jcf),
|
|
JCF *jcf)
|
|
{
|
|
int i;
|
|
for (i = 1; i < JPOOL_SIZE(jcf); i++)
|
|
{
|
|
int kind = JPOOL_TAG (jcf, i);
|
|
fprintf (out, "#%d: ", i);
|
|
print_constant (out, jcf, i, 2);
|
|
fprintf (out, "\n");
|
|
if (kind == CONSTANT_Double || kind == CONSTANT_Long)
|
|
i++; /* These take up two slots in the constant table */
|
|
}
|
|
}
|
|
|
|
static void
|
|
DEFUN(print_signature_type, (stream, ptr, limit),
|
|
FILE* stream AND const unsigned char **ptr AND const unsigned char *limit)
|
|
{
|
|
int array_size;
|
|
if ((*ptr) >= limit)
|
|
return;
|
|
switch (*(*ptr))
|
|
{
|
|
case '[':
|
|
array_size = -1;
|
|
for ((*ptr)++; (*ptr) < limit && ISDIGIT (**ptr); (*ptr)++)
|
|
{
|
|
array_size = (array_size < 0 ? 0 : 10 * array_size) + *(*ptr) - '0';
|
|
}
|
|
print_signature_type (stream, ptr, limit);
|
|
if (array_size == -1)
|
|
fprintf (stream, "[]");
|
|
else
|
|
fprintf (stream, "[%d]", array_size);
|
|
break;
|
|
case '(':
|
|
{
|
|
int nargs = 0;
|
|
fputc (*(*ptr)++, stream);
|
|
for (; **ptr != ')' && *ptr < limit; nargs++)
|
|
{
|
|
if (nargs > 0)
|
|
fputc (',', stream);
|
|
print_signature_type (stream, ptr, limit);
|
|
}
|
|
if (*ptr < limit)
|
|
{
|
|
fputc (*(*ptr)++, stream);
|
|
print_signature_type (stream, ptr, limit);
|
|
}
|
|
else
|
|
fprintf (stream, "???");
|
|
}
|
|
break;
|
|
|
|
case 'B': fprintf (stream, "byte"); (*ptr)++; break;
|
|
case 'C': fprintf (stream, "char"); (*ptr)++; break;
|
|
case 'D': fprintf (stream, "double"); (*ptr)++; break;
|
|
case 'F': fprintf (stream, "float"); (*ptr)++; break;
|
|
case 'S': fprintf (stream, "short"); (*ptr)++; break;
|
|
case 'I': fprintf (stream, "int"); (*ptr)++; break;
|
|
case 'J': fprintf (stream, "long"); (*ptr)++; break;
|
|
case 'Z': fprintf (stream, "boolean"); (*ptr)++; break;
|
|
case 'V': fprintf (stream, "void"); (*ptr)++; break;
|
|
|
|
case 'L':
|
|
for ((*ptr)++; (*ptr)<limit && *(*ptr) != ';'; (*ptr)++)
|
|
jcf_print_char (stream, *(*ptr) == '/' ? '.' : *(*ptr));
|
|
if (*(*ptr) == ';')
|
|
(*ptr)++;
|
|
break;
|
|
default:
|
|
jcf_print_char (stream, *(*ptr)++);
|
|
}
|
|
}
|
|
|
|
static void
|
|
DEFUN(print_signature, (stream, jcf, signature_index, int options),
|
|
FILE* stream AND JCF *jcf AND int signature_index AND int options)
|
|
{
|
|
if (JPOOL_TAG (jcf, signature_index) != CONSTANT_Utf8)
|
|
print_constant_terse (out, jcf, signature_index, CONSTANT_Utf8);
|
|
else
|
|
{
|
|
const unsigned char *str = JPOOL_UTF_DATA (jcf, signature_index);
|
|
int length = JPOOL_UTF_LENGTH (jcf, signature_index);
|
|
const unsigned char *limit;
|
|
limit = str + length;
|
|
if (str >= limit)
|
|
fprintf (stream, "<empty signature string>");
|
|
else
|
|
{
|
|
if (options & PRINT_SIGNATURE_RESULT_ONLY)
|
|
{
|
|
while (str < limit && *str++ != ')') ;
|
|
}
|
|
if (options & PRINT_SIGNATURE_ARGS_ONLY)
|
|
{
|
|
str++;
|
|
fputc ('(', stream);
|
|
while (str < limit && *str != ')')
|
|
{
|
|
print_signature_type (stream, &str, limit);
|
|
if (*str != ')')
|
|
fputs (", ", stream);
|
|
}
|
|
fputc (')', stream);
|
|
}
|
|
else
|
|
{
|
|
print_signature_type (stream, &str, limit);
|
|
if (str < limit)
|
|
{
|
|
fprintf (stream, "<junk:");
|
|
jcf_print_utf8 (stream, str, limit - str);
|
|
fputc ('>', stream);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
DEFUN(print_exception_table, (jcf, entries, count),
|
|
JCF *jcf AND unsigned char *entries AND int count)
|
|
{
|
|
/* Print exception table. */
|
|
int i = count;
|
|
if (i > 0)
|
|
{
|
|
unsigned char *ptr = entries;
|
|
fprintf (out, "Exceptions (count: %d):\n", i);
|
|
for (; --i >= 0; ptr+= 8)
|
|
{
|
|
int start_pc = GET_u2 (ptr);
|
|
int end_pc = GET_u2 (ptr+2);
|
|
int handler_pc = GET_u2 (ptr+4);
|
|
int catch_type = GET_u2 (ptr+6);
|
|
fprintf (out, " start: %d, end: %d, handler: %d, type: %d",
|
|
start_pc, end_pc, handler_pc, catch_type);
|
|
if (catch_type == 0)
|
|
fputs (" /* finally */", out);
|
|
else
|
|
{
|
|
fputc('=', out);
|
|
print_constant_terse (out, jcf, catch_type, CONSTANT_Class);
|
|
}
|
|
fputc ('\n', out);
|
|
}
|
|
}
|
|
}
|
|
|
|
#include "jcf-reader.c"
|
|
|
|
static int
|
|
DEFUN (usage, (), )
|
|
{
|
|
fprintf (stderr, "Usage: jcf-dump [-o outputfile] [-c] classname\n");
|
|
exit(1);
|
|
}
|
|
|
|
static void
|
|
DEFUN(process_class, (jcf),
|
|
JCF *jcf)
|
|
{
|
|
int code;
|
|
if (jcf_parse_preamble (jcf) != 0)
|
|
fprintf (stderr, "Not a valid Java .class file.\n");
|
|
|
|
/* Parse and possibly print constant pool */
|
|
code = jcf_parse_constant_pool (jcf);
|
|
if (code != 0)
|
|
{
|
|
fprintf (stderr, "error while parsing constant pool\n");
|
|
exit (FATAL_EXIT_CODE);
|
|
}
|
|
code = verify_constant_pool (jcf);
|
|
if (code > 0)
|
|
{
|
|
fprintf (stderr, "error in constant pool entry #%d\n", code);
|
|
exit (FATAL_EXIT_CODE);
|
|
}
|
|
if (flag_print_constant_pool)
|
|
print_constant_pool (jcf);
|
|
|
|
jcf_parse_class (jcf);
|
|
code = jcf_parse_fields (jcf);
|
|
if (code != 0)
|
|
{
|
|
fprintf (stderr, "error while parsing fields\n");
|
|
exit (FATAL_EXIT_CODE);
|
|
}
|
|
code = jcf_parse_methods (jcf);
|
|
if (code != 0)
|
|
{
|
|
fprintf (stderr, "error while parsing methods\n");
|
|
exit (FATAL_EXIT_CODE);
|
|
}
|
|
code = jcf_parse_final_attributes (jcf);
|
|
if (code != 0)
|
|
{
|
|
fprintf (stderr, "error while parsing final attributes\n");
|
|
exit (FATAL_EXIT_CODE);
|
|
}
|
|
jcf->filename = NULL;
|
|
}
|
|
|
|
int
|
|
DEFUN(main, (argc, argv),
|
|
int argc AND char** argv)
|
|
{
|
|
JCF jcf[1];
|
|
int argi;
|
|
if (argc <= 1)
|
|
usage ();
|
|
|
|
jcf_path_init ();
|
|
|
|
for (argi = 1; argi < argc; argi++)
|
|
{
|
|
char *arg = argv[argi];
|
|
|
|
if (arg[0] != '-' || ! strcmp (arg, "--"))
|
|
break;
|
|
|
|
/* Just let all arguments be given in either "-" or "--" form. */
|
|
if (arg[1] == '-')
|
|
++arg;
|
|
|
|
if (strcmp (arg, "-o") == 0 && argi + 1 < argc)
|
|
output_file = argv[++argi];
|
|
else if (strcmp (arg, "-classpath") == 0 && argi + 1 < argc)
|
|
jcf_path_classpath_arg (argv[++argi]);
|
|
else if (strcmp (arg, "-CLASSPATH") == 0 && argi + 1 < argc)
|
|
jcf_path_CLASSPATH_arg (argv[++argi]);
|
|
else if (strncmp (arg, "-I", 2) == 0)
|
|
jcf_path_include_arg (arg + 2);
|
|
else if (strcmp (arg, "-verbose") == 0)
|
|
verbose++;
|
|
else if (strcmp (arg, "-print-main") == 0)
|
|
flag_print_main++;
|
|
else if (strcmp (arg, "-c") == 0)
|
|
flag_disassemble_methods++;
|
|
else if (strcmp (arg, "-javap") == 0)
|
|
{
|
|
flag_javap_compatible++;
|
|
flag_print_constant_pool = 0;
|
|
}
|
|
else
|
|
{
|
|
fprintf (stderr, "%s: illegal argument\n", argv[argi]);
|
|
exit (FATAL_EXIT_CODE);
|
|
}
|
|
}
|
|
|
|
if (argi == argc)
|
|
usage ();
|
|
|
|
jcf_path_seal ();
|
|
|
|
if (flag_print_main)
|
|
{
|
|
flag_print_fields = 0;
|
|
flag_print_methods = 0;
|
|
flag_print_constant_pool = 0;
|
|
flag_print_attributes = 0;
|
|
flag_print_class_info = 0;
|
|
}
|
|
|
|
if (output_file)
|
|
{
|
|
out = fopen (output_file, "w");
|
|
if (out)
|
|
{
|
|
fprintf (stderr, "Cannot open '%s' for output.\n", output_file);
|
|
exit (FATAL_EXIT_CODE);
|
|
}
|
|
}
|
|
else
|
|
out = stdout;
|
|
|
|
if (argi >= argc)
|
|
{
|
|
fprintf (out, "Reading .class from <standard input>.\n");
|
|
#if JCF_USE_STDIO
|
|
open_class ("<stdio>", jcf, stdin, NULL);
|
|
#else
|
|
open_class ("<stdio>", jcf, 0, NULL);
|
|
#endif
|
|
process_class (jcf);
|
|
}
|
|
else
|
|
{
|
|
for (; argi < argc; argi++)
|
|
{
|
|
char *arg = argv[argi];
|
|
char* class_filename = find_class (arg, strlen (arg), jcf, 0);
|
|
if (class_filename == NULL)
|
|
class_filename = find_classfile (arg, jcf, NULL);
|
|
if (class_filename == NULL)
|
|
{
|
|
perror ("Could not find class");
|
|
exit (FATAL_EXIT_CODE);
|
|
}
|
|
JCF_FILL (jcf, 4);
|
|
if (GET_u4 (jcf->read_ptr) == ZIPMAGIC)
|
|
{
|
|
long compressed_size, member_size;
|
|
int compression_method, filename_length, extra_length;
|
|
int general_purpose_bits;
|
|
char *filename;
|
|
int total_length;
|
|
if (flag_print_class_info)
|
|
fprintf (out, "Reading classes from archive %s.\n",
|
|
class_filename);
|
|
for (;;)
|
|
{
|
|
int skip = 0;
|
|
jcf_filbuf_t save_filbuf = jcf->filbuf;
|
|
long magic = JCF_readu4_le (jcf);
|
|
if (magic == 0x02014b50 || magic == 0x06054b50)
|
|
break; /* got to central directory */
|
|
if (magic != 0x04034b50) /* ZIPMAGIC (little-endian) */
|
|
{
|
|
fprintf (stderr, "bad format of .zip/.jar archive\n");
|
|
exit (FATAL_EXIT_CODE);
|
|
}
|
|
JCF_FILL (jcf, 26);
|
|
JCF_SKIP (jcf, 2);
|
|
general_purpose_bits = JCF_readu2_le (jcf);
|
|
compression_method = JCF_readu2_le (jcf);
|
|
JCF_SKIP (jcf, 8);
|
|
compressed_size = JCF_readu4_le (jcf);
|
|
member_size = JCF_readu4_le (jcf);
|
|
filename_length = JCF_readu2_le (jcf);
|
|
extra_length = JCF_readu2_le (jcf);
|
|
total_length = filename_length + extra_length
|
|
+ compressed_size;
|
|
if (jcf->read_end - jcf->read_ptr < total_length)
|
|
jcf_trim_old_input (jcf);
|
|
JCF_FILL (jcf, total_length);
|
|
filename = jcf->read_ptr;
|
|
JCF_SKIP (jcf, filename_length);
|
|
JCF_SKIP (jcf, extra_length);
|
|
if (filename_length > 0
|
|
&& filename[filename_length-1] == '/')
|
|
{
|
|
if (flag_print_class_info)
|
|
fprintf (out, "[Skipping directory %.*s]\n",
|
|
filename_length, filename);
|
|
skip = 1;
|
|
}
|
|
else if (compression_method != 0)
|
|
{
|
|
if (flag_print_class_info)
|
|
fprintf (out, "[Skipping compressed file %.*s]\n",
|
|
filename_length, filename);
|
|
skip = 1;
|
|
}
|
|
else if (member_size < 4
|
|
|| GET_u4 (jcf->read_ptr) != 0xcafebabe)
|
|
{
|
|
if (flag_print_class_info)
|
|
fprintf (out, "[Skipping non-.class member %.*s]\n",
|
|
filename_length, filename);
|
|
skip = 1;
|
|
}
|
|
else
|
|
{
|
|
if (flag_print_class_info)
|
|
fprintf (out, "Reading class member: %.*s.\n",
|
|
filename_length, filename);
|
|
}
|
|
if (skip)
|
|
{
|
|
JCF_SKIP (jcf, compressed_size);
|
|
}
|
|
else
|
|
{
|
|
unsigned char *save_end;
|
|
jcf->filbuf = jcf_unexpected_eof;
|
|
save_end = jcf->read_end;
|
|
jcf->read_end = jcf->read_ptr + compressed_size;
|
|
process_class (jcf);
|
|
jcf->filbuf = save_filbuf;
|
|
jcf->read_end = save_end;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (flag_print_class_info)
|
|
fprintf (out, "Reading .class from %s.\n", class_filename);
|
|
process_class (jcf);
|
|
}
|
|
JCF_FINISH(jcf);
|
|
}
|
|
}
|
|
|
|
exit (SUCCESS_EXIT_CODE);
|
|
}
|
|
|
|
static void
|
|
DEFUN(disassemble_method, (jcf, byte_ops, len),
|
|
JCF* jcf AND unsigned char *byte_ops AND int len)
|
|
{
|
|
#undef AND /* Causes problems with opcodes for iand and land. */
|
|
#undef PTR
|
|
int PC;
|
|
int i;
|
|
int saw_wide = 0;
|
|
if (flag_disassemble_methods == 0)
|
|
return;
|
|
#define BCODE byte_ops
|
|
for (PC = 0; PC < len;)
|
|
{
|
|
int oldpc = PC;
|
|
int saw_index;
|
|
jint INT_temp;
|
|
switch (byte_ops[PC++])
|
|
{
|
|
|
|
/* This is the actual code emitted for each of opcodes in javaops.def.
|
|
The actual opcode-specific stuff is handled by the OPKIND macro.
|
|
I.e. for an opcode whose OPKIND is BINOP, the BINOP will be called.
|
|
Those macros are defiend below. The OPKINDs that do not have any
|
|
inline parameters (such as BINOP) and therefore do mot need anything
|
|
else to me printed out just use an empty body. */
|
|
|
|
#define JAVAOP(OPNAME, OPCODE, OPKIND, OPERAND_TYPE, OPERAND_VALUE) \
|
|
case OPCODE: \
|
|
fprintf (out, "%3d: %s", oldpc, #OPNAME); \
|
|
OPKIND(OPERAND_TYPE, OPERAND_VALUE); \
|
|
fputc ('\n', out); \
|
|
break;
|
|
|
|
#define CONST_INDEX_1 (saw_index = 1, IMMEDIATE_u1)
|
|
#define CONST_INDEX_2 (saw_index = 1, IMMEDIATE_u2)
|
|
#define VAR_INDEX_1 (saw_index = 1, IMMEDIATE_u1)
|
|
#define VAR_INDEX_2 (saw_index = 1, IMMEDIATE_u2)
|
|
|
|
#define CHECK_PC_IN_RANGE(PC) (PC < 0 || PC > len ? \
|
|
(fprintf(stderr, "Bad byte codes.\n"), exit(-1)) : 1)
|
|
|
|
/* Print out operand (if not implied by the opcode) for PUSCH opcodes.
|
|
These all push a constant onto the opcode stack. */
|
|
#define PUSHC(OPERAND_TYPE, OPERAND_VALUE) \
|
|
saw_index = 0, i = (OPERAND_VALUE); \
|
|
if (oldpc+1 == PC) /* nothing */; \
|
|
else if (saw_index) fprintf (out, " "), print_constant_ref (out, jcf, i); \
|
|
else fprintf (out, " %d", i);
|
|
|
|
/* Print out operand (a local variable index) for LOAD opcodes.
|
|
These all push local variable onto the opcode stack. */
|
|
#define LOAD(OPERAND_TYPE, OPERAND_VALUE) \
|
|
INT_temp = saw_wide ? IMMEDIATE_u2 : (OPERAND_VALUE); goto load_store;
|
|
|
|
/* Handle STORE opcodes same as LOAD opcodes.
|
|
These all store a value from the opcode stack in a local variable. */
|
|
#define STORE LOAD
|
|
|
|
/* Handle more kind of opcodes. */
|
|
#define STACK(OPERAND_TYPE, OPERAND_VALUE) /* nothing */
|
|
#define UNOP(OPERAND_TYPE, OPERAND_VALUE) /* nothing */
|
|
#define BINOP(OPERAND_TYPE, OPERAND_VALUE) /* nothing */
|
|
#define CONVERT(OPERAND_TYPE, OPERAND_VALUE) /* nothing */
|
|
#define CONVERT2(OPERAND_TYPE, OPERAND_VALUE) /* nothing */
|
|
#define RETURN(OPERAND_TYPE, OPERAND_VALUE) /* nothing */
|
|
#define UNKNOWN(OPERAND_TYPE, OPERAND_VALUE) /* nothing */
|
|
|
|
/* Handle putfield and getfield opcodes, with static versions. */
|
|
#define FIELD(MAYBE_STATIC, PUT_OR_GET) \
|
|
fputc (' ', out); print_constant_ref (out, jcf, IMMEDIATE_u2)
|
|
|
|
/* Print operand for invoke opcodes. */
|
|
#define INVOKE(OPERAND_TYPE, OPERAND_VALUE) \
|
|
fputc (' ', out); print_constant_ref (out, jcf, IMMEDIATE_u2);\
|
|
if (OPERAND_VALUE) /* for invokeinterface */ \
|
|
{ int nargs = IMMEDIATE_u1; PC++; \
|
|
fprintf (out, " nargs:%d", nargs); }
|
|
|
|
#define OBJECT(OPERAND_TYPE, OPERAND_VALUE) \
|
|
fputc (' ', out); print_constant_ref (out, jcf, IMMEDIATE_u2);
|
|
|
|
#define ARRAY(OPERAND_TYPE, SUBOP) \
|
|
ARRAY_##SUBOP(OPERAND_TYPE)
|
|
/* Handle sub-categories of ARRAY opcodes. */
|
|
#define ARRAY_LOAD(TYPE) /* nothing */
|
|
#define ARRAY_STORE(TYPE) /* nothing */
|
|
#define ARRAY_LENGTH(TYPE) /* nothing */
|
|
#define ARRAY_NEW(TYPE) ARRAY_NEW_##TYPE
|
|
#define ARRAY_NEW_NUM \
|
|
INT_temp = IMMEDIATE_u1; \
|
|
{ char *str; \
|
|
switch (INT_temp) { \
|
|
case 4: str = "boolean"; break; \
|
|
case 5: str = "char"; break; \
|
|
case 6: str = "float"; break; \
|
|
case 7: str = "double"; break; \
|
|
case 8: str = "byte"; break; \
|
|
case 9: str = "short"; break; \
|
|
case 10: str = "int"; break; \
|
|
case 11: str = "long"; break; \
|
|
default: str = "<unknown type code %d>"; break; \
|
|
} \
|
|
fputc (' ', out); fprintf (out, str, INT_temp); }
|
|
|
|
#define ARRAY_NEW_PTR \
|
|
fputc (' ', out); print_constant_ref (out, jcf, IMMEDIATE_u2);
|
|
|
|
#define ARRAY_NEW_MULTI \
|
|
fputc (' ', out); print_constant_ref (out, jcf, IMMEDIATE_u2); \
|
|
fprintf (out, " %d", IMMEDIATE_u1); /* number of dimensions */
|
|
|
|
#define TEST(OPERAND_TYPE, OPERAND_VALUE) \
|
|
fprintf (out, " %d", oldpc + IMMEDIATE_s2)
|
|
|
|
#define BRANCH(OPERAND_TYPE, OPERAND_VALUE) \
|
|
saw_index = 0, INT_temp = (OPERAND_VALUE); \
|
|
fprintf (out, " %ld", (long) (saw_index ? INT_temp : oldpc + INT_temp))
|
|
|
|
#define JSR(OPERAND_TYPE, OPERAND_VALUE) \
|
|
saw_index = 0, INT_temp = (OPERAND_VALUE); \
|
|
fprintf (out, " %ld", (long) (saw_index ? INT_temp : oldpc + INT_temp))
|
|
|
|
#undef RET /* Defined by config/i386/i386.h */
|
|
#define RET(OPERAND_TYPE, OPERAND_VALUE) \
|
|
INT_temp = saw_wide ? IMMEDIATE_u2 : (OPERAND_VALUE); \
|
|
saw_wide = 0; \
|
|
fprintf (out, " %ld", (long) INT_temp);
|
|
|
|
#define SWITCH(OPERAND_TYPE, TABLE_OR_LOOKUP) \
|
|
PC = (PC + 3) / 4 * 4; TABLE_OR_LOOKUP##_SWITCH
|
|
|
|
#define LOOKUP_SWITCH \
|
|
{ jint default_offset = IMMEDIATE_s4; jint npairs = IMMEDIATE_s4; \
|
|
fprintf (out, " npairs=%ld, default=%ld", (long) npairs, (long) default_offset+oldpc); \
|
|
while (--npairs >= 0) { \
|
|
jint match = IMMEDIATE_s4; jint offset = IMMEDIATE_s4; \
|
|
fprintf (out, "\n%10ld: %ld", (long)match, (long)(offset+oldpc)); } \
|
|
}
|
|
|
|
#define TABLE_SWITCH \
|
|
{ jint default_offset = IMMEDIATE_s4; \
|
|
jint low = IMMEDIATE_s4; jint high = IMMEDIATE_s4; \
|
|
fprintf (out, " low=%ld, high=%ld, default=%ld", \
|
|
(long) low, (long) high, (long) default_offset+oldpc); \
|
|
for (; low <= high; low++) { \
|
|
jint offset = IMMEDIATE_s4; \
|
|
fprintf (out, "\n%10ld: %ld", (long)low, (long)(offset+oldpc)); } \
|
|
}
|
|
|
|
#define SPECIAL(OPERAND_TYPE, OPERAND_VALUE) \
|
|
SPECIAL_##OPERAND_VALUE(OPERAND_TYPE)
|
|
|
|
#define SPECIAL_IINC(OPERAND_TYPE) \
|
|
i = saw_wide ? IMMEDIATE_u2 : IMMEDIATE_u1; \
|
|
fprintf (out, " %d", i); \
|
|
INT_temp = saw_wide ? IMMEDIATE_s2 : IMMEDIATE_s1; \
|
|
saw_wide = 0; \
|
|
fprintf (out, " %d", i)
|
|
|
|
#define SPECIAL_WIDE(OPERAND_TYPE) \
|
|
saw_wide = 1;
|
|
|
|
#define SPECIAL_EXIT(OPERAND_TYPE) /* nothing */
|
|
#define SPECIAL_ENTER(OPERAND_TYPE) /* nothing */
|
|
#define SPECIAL_BREAK(OPERAND_TYPE) /* nothing */
|
|
#define SPECIAL_THROW(OPERAND_TYPE) /* nothing */
|
|
|
|
#define IMPL(OPERAND_TYPE, OPERAND_VALUE) \
|
|
fprintf (out, " %d", IMMEDIATE_u##OPERAND_VALUE)
|
|
|
|
#define COND(OPERAND_TYPE, OPERAND_VALUE) \
|
|
TEST(OPERAND_TYPE, OPERAND_VALUE)
|
|
|
|
#include "javaop.def"
|
|
|
|
load_store:
|
|
if (oldpc+1 == PC) /* nothing - local index implied by opcode */;
|
|
else
|
|
{
|
|
saw_wide = 0;
|
|
fprintf (out, " %ld", (long) INT_temp);
|
|
}
|
|
fputc ('\n', out);
|
|
break;
|
|
|
|
default:
|
|
fprintf (out, "%3d: unknown(%3d)\n", oldpc, byte_ops[PC]);
|
|
}
|
|
}
|
|
}
|