#include "config.h"
#include "system.h"
#include "ggc.h"
#include "jcf.h"
#include "tree.h"
#include "java-tree.h"
#include "version.h"
#include <getopt.h>
FILE *out;
char *output_file = NULL;
int verbose = 0;
int flag_disassemble_methods = 0;
int flag_print_class_info = 1;
int flag_print_constant_pool = 1;
int flag_print_fields = 1;
int flag_print_methods = 1;
int flag_print_attributes = 1;
int flag_newer = 1;
int flag_print_main = 0;
int this_class_index = 0;
int class_access_flags = 0;
int flag_javap_compatible = 0;
static void print_access_flags PARAMS ((FILE *, uint16, char));
static void print_constant_terse PARAMS ((FILE*, JCF*, int, int));
static void print_constant PARAMS ((FILE *, JCF *, int, int));
static void print_constant_ref PARAMS ((FILE *, JCF *, int));
static void disassemble_method PARAMS ((JCF*, const unsigned char *, int));
static void print_name PARAMS ((FILE*, JCF*, int));
static void print_signature PARAMS ((FILE*, JCF*, int, int));
static int utf8_equal_string PARAMS ((struct JCF*, int, const char *));
static void usage PARAMS ((void)) ATTRIBUTE_NORETURN;
static void help PARAMS ((void)) ATTRIBUTE_NORETURN;
static void version PARAMS ((void)) ATTRIBUTE_NORETURN;
static void process_class PARAMS ((struct JCF *));
static void print_constant_pool PARAMS ((struct JCF *));
static void print_exception_table PARAMS ((struct JCF *,
const unsigned char *entries, int));
#define PRINT_SIGNATURE_RESULT_ONLY 1
#define PRINT_SIGNATURE_ARGS_ONLY 2
static int
DEFUN(utf8_equal_string, (jcf, index, value),
JCF *jcf AND int index AND const char * value)
{
if (CPOOL_INDEX_IN_RANGE (&jcf->cpool, index)
&& JPOOL_TAG (jcf, index) == CONSTANT_Utf8)
{
int len = strlen (value);
if (JPOOL_UTF_LENGTH (jcf, index) == len
&& memcmp (JPOOL_UTF_DATA (jcf, index), value, len) == 0)
return 1;
}
return 0;
}
#define HANDLE_MAGIC(MAGIC, MINOR, MAJOR) \
this_class_index = 0; \
if (flag_print_class_info) \
fprintf (out, \
"Magic number: 0x%0lx, minor_version: %ld, major_version: %ld.\n",\
(long) MAGIC, (long) MINOR, (long) MAJOR)
#define HANDLE_START_CONSTANT_POOL(COUNT) \
if (flag_print_constant_pool) \
fprintf (out, "\nConstant pool (count: %d):\n", COUNT)
#define HANDLE_SOURCEFILE(INDEX) \
{ fprintf (out, "Attribute "); \
print_constant_terse (out, jcf, attribute_name, CONSTANT_Utf8); \
fprintf (out, ", length:%ld, #%d=", (long) attribute_length, INDEX); \
print_constant_terse (out, jcf, INDEX, CONSTANT_Utf8); fputc ('\n', out); }
#define HANDLE_CLASS_INFO(ACCESS_FLAGS, THIS, SUPER, INTERFACES_COUNT) \
this_class_index = THIS; \
class_access_flags = ACCESS_FLAGS; \
if (flag_print_class_info) \
{ fprintf (out, "\nAccess flags: 0x%x", ACCESS_FLAGS); \
print_access_flags (out, ACCESS_FLAGS, 'c'); \
fputc ('\n', out); \
fprintf (out, "This class: "); \
if (flag_print_constant_pool) \
fprintf (out, "%d=", THIS); \
print_constant_terse (out, jcf, THIS, CONSTANT_Class); \
if (flag_print_constant_pool || SUPER != 0) \
fprintf (out, ", super: "); \
if (flag_print_constant_pool) \
{ \
fprintf (out, "%d", SUPER); \
if (SUPER != 0) \
fputc ('=', out); \
} \
if (SUPER != 0) \
print_constant_terse (out, jcf, SUPER, CONSTANT_Class); \
fprintf (out, "\nInterfaces (count: %d):\n", INTERFACES_COUNT); \
}
#define IGNORE_ATTRIBUTE(JCF, NAME, NAME_LENGTH) \
(flag_print_attributes <= 0)
#define HANDLE_CLASS_INTERFACE(INDEX) \
if (flag_print_class_info) \
{ fprintf (out, "- Implements: %d=", INDEX); \
print_constant_terse (out, jcf, INDEX, CONSTANT_Class); \
fputc ('\n', out); }
#define HANDLE_START_FIELDS(FIELDS_COUNT) \
if (flag_print_fields) \
fprintf (out, "\nFields (count: %d):\n", FIELDS_COUNT)
#define HANDLE_START_FIELD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
if (flag_print_fields) \
{ fprintf (out, "Field name:"); \
print_constant_terse (out, jcf, NAME, CONSTANT_Utf8); \
print_access_flags (out, ACCESS_FLAGS, 'f'); \
fprintf (out, " Signature: "); \
if (flag_print_constant_pool) \
fprintf (out, "%d=", SIGNATURE); \
print_signature (out, jcf, SIGNATURE, 0); \
fputc ('\n', out); } \
else \
flag_print_attributes--;
#define HANDLE_END_FIELD() \
if (! flag_print_fields) \
flag_print_attributes++;
#define HANDLE_START_METHODS(METHODS_COUNT) \
if (flag_print_methods) \
fprintf (out, "\nMethods (count: %d):\n", METHODS_COUNT); \
else \
flag_print_attributes--;
#define HANDLE_END_METHODS() \
if (! flag_print_methods) \
flag_print_attributes++;
#define HANDLE_METHOD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
{ \
if (flag_print_methods) \
{ \
if (flag_javap_compatible) \
{ \
fprintf (out, " "); \
print_access_flags (out, ACCESS_FLAGS, 'm'); \
fputc (' ', out); \
print_signature (out, jcf, SIGNATURE, PRINT_SIGNATURE_RESULT_ONLY); \
fputc (' ', out); \
print_constant_terse (out, jcf, NAME, CONSTANT_Utf8); \
print_signature (out, jcf, SIGNATURE, PRINT_SIGNATURE_ARGS_ONLY); \
fputc ('\n', out); \
} \
else \
{ \
fprintf (out, "\nMethod name:"); \
print_constant_terse (out, jcf, NAME, CONSTANT_Utf8); \
print_access_flags (out, ACCESS_FLAGS, 'm'); \
fprintf (out, " Signature: "); \
if (flag_print_constant_pool) \
fprintf (out, "%d=", SIGNATURE); \
print_signature (out, jcf, SIGNATURE, 0); \
fputc ('\n', out); \
} \
} \
if (flag_print_main && ACCESS_FLAGS == (ACC_STATIC|ACC_PUBLIC) \
&& utf8_equal_string (jcf, NAME, "main") \
&& utf8_equal_string (jcf, SIGNATURE, "([Ljava/lang/String;)V") \
&& this_class_index > 0 \
&& (class_access_flags & ACC_PUBLIC)) \
{ \
print_constant_terse(out, jcf, this_class_index, CONSTANT_Class); \
fputc ('\n', out); \
} \
}
#define COMMON_HANDLE_ATTRIBUTE(JCF, INDEX, LENGTH) \
( fprintf (out, "Attribute "), \
print_constant_terse (out, jcf, INDEX, CONSTANT_Utf8), \
fprintf (out, ", length:%ld", (long) LENGTH) )
#define HANDLE_CONSTANTVALUE(VALUE_INDEX) \
( COMMON_HANDLE_ATTRIBUTE(JCF, attribute_name, attribute_length), \
fprintf (out, ", value: "), \
print_constant_ref (out, jcf, VALUE_INDEX), \
fprintf (out, "\n") )
#define HANDLE_CODE_ATTRIBUTE(MAX_STACK, MAX_LOCALS, CODE_LENGTH) \
{ COMMON_HANDLE_ATTRIBUTE(JCF, attribute_name, attribute_length); \
fprintf (out, ", max_stack:%ld, max_locals:%ld, code_length:%ld\n", \
(long) MAX_STACK, (long) MAX_LOCALS, (long) CODE_LENGTH); \
disassemble_method (jcf, jcf->read_ptr, CODE_LENGTH); }
#define HANDLE_EXCEPTION_TABLE(ENTRIES, COUNT) \
print_exception_table (jcf, ENTRIES, COUNT)
#define HANDLE_EXCEPTIONS_ATTRIBUTE(COUNT) \
{ int n = (COUNT); int i; \
COMMON_HANDLE_ATTRIBUTE(JCF, attribute_name, attribute_length); \
fprintf (out, ", count: %d\n", n); \
for (i = 0; i < n; i++) {\
int ex_index = JCF_readu2 (jcf); \
fprintf (out, "%3d: ", i); \
print_constant_ref (out, jcf, ex_index); \
fputc ('\n', out); } }
#define HANDLE_LOCALVARIABLETABLE_ATTRIBUTE(COUNT) \
{ int n = (COUNT); int i; \
COMMON_HANDLE_ATTRIBUTE(JCF, attribute_name, attribute_length); \
fprintf (out, ", count: %d\n", n); \
for (i = 0; i < n; i++) {\
int start_pc = JCF_readu2 (jcf); \
int length = JCF_readu2 (jcf); \
int name_index = JCF_readu2 (jcf); \
int signature_index = JCF_readu2 (jcf); \
int slot = JCF_readu2 (jcf); \
fprintf (out, " slot#%d: name: %d=", slot, name_index); \
print_name (out, jcf, name_index); \
fprintf (out, ", type: %d=", signature_index); \
print_signature (out, jcf, signature_index, 0); \
fprintf (out, " (pc: %d length: %d)\n", start_pc, length); }}
#define HANDLE_LINENUMBERTABLE_ATTRIBUTE(COUNT) \
{ int n = (COUNT); int i; \
COMMON_HANDLE_ATTRIBUTE(jcf, attribute_name, attribute_length); \
fprintf (out, ", count: %d\n", n); \
if (flag_disassemble_methods) \
for (i = 0; i < n; i++) {\
int start_pc = JCF_readu2 (jcf); \
int line_number = JCF_readu2 (jcf); \
fprintf (out, " line: %d at pc: %d\n", line_number, start_pc); }\
else \
JCF_SKIP (jcf, 4 * n); }
#define HANDLE_INNERCLASSES_ATTRIBUTE(COUNT) \
{ int n = (COUNT); \
COMMON_HANDLE_ATTRIBUTE(jcf, attribute_name, attribute_length); \
while (n--) \
{ \
uint16 inner_class_info_index = JCF_readu2 (jcf); \
uint16 outer_class_info_index = JCF_readu2 (jcf); \
uint16 inner_name_index = JCF_readu2 (jcf); \
uint16 inner_class_access_flags = JCF_readu2 (jcf); \
\
if (flag_print_class_info) \
{ \
fprintf (out, "\n class: "); \
if (flag_print_constant_pool) \
fprintf (out, "%d=", inner_class_info_index); \
print_constant_terse (out, jcf, \
inner_class_info_index, CONSTANT_Class); \
fprintf (out, " (%d=", inner_name_index); \
print_constant_terse (out, jcf, inner_name_index, CONSTANT_Utf8); \
fprintf (out, "), access flags: 0x%x", inner_class_access_flags); \
print_access_flags (out, inner_class_access_flags, 'c'); \
fprintf (out, ", outer class: "); \
if (flag_print_constant_pool) \
fprintf (out, "%d=", outer_class_info_index); \
print_constant_terse (out, jcf, \
outer_class_info_index, CONSTANT_Class); \
} \
} \
if (flag_print_class_info) \
fputc ('\n', out); \
}
#define PROCESS_OTHER_ATTRIBUTE(JCF, INDEX, LENGTH) \
{ COMMON_HANDLE_ATTRIBUTE(JCF, INDEX, LENGTH); \
fputc ('\n', out); JCF_SKIP (JCF, LENGTH); }
#define START_FINAL_ATTRIBUTES(ATTRIBUTES_COUNT) \
if (flag_print_attributes > 0) \
fprintf (out, "\nAttributes (count: %d):\n", attributes_count);
#include "javaop.h"
static void
DEFUN(print_constant_ref, (stream, jcf, index),
FILE *stream AND JCF *jcf AND int index)
{
fprintf (stream, "#%d=<", index);
if (index <= 0 || index >= JPOOL_SIZE(jcf))
fprintf (stream, "out of range");
else
print_constant (stream, jcf, index, 1);
fprintf (stream, ">");
}
static void
DEFUN (print_access_flags, (stream, flags, context),
FILE *stream AND uint16 flags AND char context)
{
if (flags & ACC_PUBLIC) fprintf (stream, " public");
if (flags & ACC_PRIVATE) fprintf (stream, " private");
if (flags & ACC_PROTECTED) fprintf (stream, " protected");
if (flags & ACC_ABSTRACT) fprintf (stream, " abstract");
if (flags & ACC_STATIC) fprintf (stream, " static");
if (flags & ACC_FINAL) fprintf (stream, " final");
if (flags & ACC_TRANSIENT) fprintf (stream, " transient");
if (flags & ACC_VOLATILE) fprintf (stream, " volatile");
if (flags & ACC_NATIVE) fprintf (stream, " native");
if (flags & ACC_SYNCHRONIZED)
{
if (context == 'c')
fprintf (stream, " super");
else
fprintf (stream, " synchronized");
}
if (flags & ACC_INTERFACE) fprintf (stream, " interface");
if (flags & ACC_STRICT) fprintf (stream, " strictfp");
}
static void
DEFUN(print_name, (stream, jcf, name_index),
FILE* stream AND JCF* jcf AND int name_index)
{
if (JPOOL_TAG (jcf, name_index) != CONSTANT_Utf8)
fprintf (stream, "<not a UTF8 constant>");
else
jcf_print_utf8 (stream, JPOOL_UTF_DATA (jcf,name_index),
JPOOL_UTF_LENGTH (jcf, name_index));
}
static void
DEFUN(print_constant_terse, (out, jcf, index, expected),
FILE *out AND JCF *jcf AND int index AND int expected)
{
if (! CPOOL_INDEX_IN_RANGE (&jcf->cpool, index))
fprintf (out, "<constant pool index %d not in range>", index);
else if (JPOOL_TAG (jcf, index) != expected)
{
fprintf (out, "<Unexpected constant type ");
print_constant (out, jcf, index, 1);
fprintf (out, ">");
}
else
print_constant (out, jcf, index, 0);
}
static void
DEFUN(print_constant, (out, jcf, index, verbosity),
FILE *out AND JCF *jcf AND int index AND int verbosity)
{
int j, n;
jlong num;
const char *str;
int kind = JPOOL_TAG (jcf, index);
switch (kind)
{
case CONSTANT_Class:
n = JPOOL_USHORT1 (jcf, index);
if (verbosity > 0)
{
if (verbosity > 1)
fprintf (out, "Class name: %d=", n);
else
fprintf (out, "Class ");
}
if (! CPOOL_INDEX_IN_RANGE (&jcf->cpool, n))
fprintf (out, "<out of range>");
else if (verbosity < 2 && JPOOL_TAG (jcf, n) == CONSTANT_Utf8)
{
int len = JPOOL_UTF_LENGTH (jcf, n);
jcf_print_utf8_replace (out, JPOOL_UTF_DATA(jcf,n), len, '/', '.');
}
else
print_constant_terse (out, jcf, n, CONSTANT_Utf8);
break;
case CONSTANT_Fieldref:
str = "Field"; goto field_or_method;
case CONSTANT_Methodref:
str = "Method"; goto field_or_method;
case CONSTANT_InterfaceMethodref:
str = "InterfaceMethod"; goto field_or_method;
field_or_method:
{
uint16 tclass = JPOOL_USHORT1 (jcf, index);
uint16 name_and_type = JPOOL_USHORT2 (jcf, index);
if (verbosity == 2)
fprintf (out, "%sref class: %d=", str, tclass);
else if (verbosity > 0)
fprintf (out, "%s ", str);
print_constant_terse (out, jcf, tclass, CONSTANT_Class);
if (verbosity < 2)
fprintf (out, ".");
else
fprintf (out, " name_and_type: %d=<", name_and_type);
print_constant_terse (out, jcf, name_and_type, CONSTANT_NameAndType);
if (verbosity == 2)
fputc ('>', out);
}
break;
case CONSTANT_String:
j = JPOOL_USHORT1 (jcf, index);
if (verbosity > 0)
{
if (verbosity > 1)
fprintf (out, "String %d=", j);
else
fprintf (out, "String ");
}
print_constant_terse (out, jcf, j, CONSTANT_Utf8);
break;
case CONSTANT_Integer:
if (verbosity > 0)
fprintf (out, "Integer ");
num = JPOOL_INT (jcf, index);
goto integer;
case CONSTANT_Long:
if (verbosity > 0)
fprintf (out, "Long ");
num = JPOOL_LONG (jcf, index);
goto integer;
integer:
{
char buffer[25];
format_int (buffer, num, 10);
fprintf (out, "%s", buffer);
if (verbosity > 1)
{
format_uint (buffer, (uint64)num, 16);
fprintf (out, "=0x%s", buffer);
}
}
break;
case CONSTANT_Float:
{
union
{
jfloat f;
int32 i;
} pun;
pun.f = JPOOL_FLOAT (jcf, index);
fprintf (out, "%s%.10g",
verbosity > 0 ? "Float " : "", (double) pun.f);
if (verbosity > 1)
fprintf (out, ", bits = 0x%08lx", (long) pun.i);
break;
}
case CONSTANT_Double:
{
jdouble dnum = JPOOL_DOUBLE (jcf, index);
fprintf (out, "%s%.20g", verbosity > 0 ? "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)
{
if (verbosity > 1)
fprintf (out, "NameAndType name: %d=", name);
else
fprintf (out, "NameAndType ");
}
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 const unsigned char *str = JPOOL_UTF_DATA (jcf, index);
int length = JPOOL_UTF_LENGTH (jcf, index);
if (verbosity > 0)
{
fputs ("Utf8: \"", out);
while (--length >= 0)
jcf_print_char (out, *str++);
}
else
{
fputc ('\"', out);
jcf_print_utf8 (out, str, length);
}
fputc ('\"', out);
}
break;
default:
fprintf (out, "(Unknown constant type %d)", kind);
}
}
static 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++;
}
}
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 const unsigned char *entries AND int count)
{
int i = count;
if (i > 0)
{
const 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 void
DEFUN(process_class, (jcf),
JCF *jcf)
{
int code;
if (jcf_parse_preamble (jcf) != 0)
fprintf (stderr, "Not a valid Java .class file.\n");
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;
}
#define LONG_OPT(Num) ((Num) + 128)
#define OPT_classpath LONG_OPT (0)
#define OPT_CLASSPATH OPT_classpath
#define OPT_bootclasspath LONG_OPT (1)
#define OPT_extdirs LONG_OPT (2)
#define OPT_HELP LONG_OPT (3)
#define OPT_VERSION LONG_OPT (4)
#define OPT_JAVAP LONG_OPT (5)
static const struct option options[] =
{
{ "classpath", required_argument, NULL, OPT_classpath },
{ "bootclasspath", required_argument, NULL, OPT_bootclasspath },
{ "extdirs", required_argument, NULL, OPT_extdirs },
{ "CLASSPATH", required_argument, NULL, OPT_CLASSPATH },
{ "help", no_argument, NULL, OPT_HELP },
{ "verbose", no_argument, NULL, 'v' },
{ "version", no_argument, NULL, OPT_VERSION },
{ "javap", no_argument, NULL, OPT_JAVAP },
{ "print-main", no_argument, &flag_print_main, 1 },
{ NULL, no_argument, NULL, 0 }
};
static void
usage ()
{
fprintf (stderr, "Try `jcf-dump --help' for more information.\n");
exit (1);
}
static void
help ()
{
printf ("Usage: jcf-dump [OPTION]... CLASS...\n\n");
printf ("Display contents of a class file in readable form.\n\n");
printf (" -c Disassemble method bodies\n");
printf (" --javap Generate output in `javap' format\n");
printf ("\n");
printf (" --classpath PATH Set path to find .class files\n");
printf (" -IDIR Append directory to class path\n");
printf (" --bootclasspath PATH Override built-in class path\n");
printf (" --extdirs PATH Set extensions directory path\n");
printf (" -o FILE Set output file name\n");
printf ("\n");
printf (" --help Print this help, then exit\n");
printf (" --version Print version number, then exit\n");
printf (" -v, --verbose Print extra information while running\n");
printf ("\n");
printf ("For bug reporting instructions, please see:\n");
printf ("%s.\n", bug_report_url);
exit (0);
}
static void
version ()
{
printf ("jcf-dump (GCC) %s\n\n", version_string);
printf ("Copyright (C) 2002 Free Software Foundation, Inc.\n");
printf ("This is free software; see the source for copying conditions. There is NO\n");
printf ("warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n");
exit (0);
}
int
DEFUN(main, (argc, argv),
int argc AND char** argv)
{
JCF jcf[1];
int argi, opt;
if (argc <= 1)
{
fprintf (stderr, "jcf-dump: no classes specified\n");
usage ();
}
jcf_path_init ();
while ((opt = getopt_long_only (argc, argv, "o:I:vc", options, NULL)) != -1)
{
switch (opt)
{
case 0:
break;
case 'o':
output_file = optarg;
break;
case 'I':
jcf_path_include_arg (optarg);
break;
case 'v':
verbose++;
break;
case 'c':
flag_disassemble_methods = 1;
break;
case OPT_classpath:
jcf_path_classpath_arg (optarg);
break;
case OPT_bootclasspath:
jcf_path_bootclasspath_arg (optarg);
break;
case OPT_extdirs:
jcf_path_extdirs_arg (optarg);
break;
case OPT_HELP:
help ();
break;
case OPT_VERSION:
version ();
break;
case OPT_JAVAP:
flag_javap_compatible++;
flag_print_constant_pool = 0;
flag_print_attributes = 0;
break;
default:
usage ();
}
}
if (optind == argc)
{
fprintf (stderr, "jcf-dump: no classes specified\n");
usage ();
}
jcf_path_seal (verbose);
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);
return FATAL_EXIT_CODE;
}
}
else
out = stdout;
if (optind >= argc)
{
fprintf (out, "Reading .class from <standard input>.\n");
open_class ("<stdio>", jcf, 0, NULL);
process_class (jcf);
}
else
{
for (argi = optind; argi < argc; argi++)
{
char *arg = argv[argi];
const 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");
return 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;
const 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;
if (magic != 0x04034b50)
{
fprintf (stderr, "bad format of .zip/.jar archive\n");
return 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);
}
}
return SUCCESS_EXIT_CODE;
}
static void
DEFUN(disassemble_method, (jcf, byte_ops, len),
JCF* jcf AND const unsigned char *byte_ops AND int len)
{
#undef AND
#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++])
{
#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)
#define PUSHC(OPERAND_TYPE, OPERAND_VALUE) \
saw_index = 0, i = (OPERAND_VALUE); \
if (oldpc+1 == PC) ; \
else if (saw_index) fprintf (out, " "), print_constant_ref (out, jcf, i); \
else fprintf (out, " %d", i);
#define LOAD(OPERAND_TYPE, OPERAND_VALUE) \
INT_temp = saw_wide ? IMMEDIATE_u2 : (OPERAND_VALUE); goto load_store;
#define STORE LOAD
#define STACK(OPERAND_TYPE, OPERAND_VALUE)
#define UNOP(OPERAND_TYPE, OPERAND_VALUE)
#define BINOP(OPERAND_TYPE, OPERAND_VALUE)
#define CONVERT(OPERAND_TYPE, OPERAND_VALUE)
#define CONVERT2(OPERAND_TYPE, OPERAND_VALUE)
#define RETURN(OPERAND_TYPE, OPERAND_VALUE)
#define UNKNOWN(OPERAND_TYPE, OPERAND_VALUE)
#define FIELD(MAYBE_STATIC, PUT_OR_GET) \
fputc (' ', out); print_constant_ref (out, jcf, IMMEDIATE_u2)
#define INVOKE(OPERAND_TYPE, OPERAND_VALUE) \
fputc (' ', out); print_constant_ref (out, jcf, IMMEDIATE_u2);\
if (OPERAND_VALUE) \
{ 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)
#define ARRAY_LOAD(TYPE)
#define ARRAY_STORE(TYPE)
#define ARRAY_LENGTH(TYPE)
#define ARRAY_NEW(TYPE) ARRAY_NEW_##TYPE
#define ARRAY_NEW_NUM \
INT_temp = IMMEDIATE_u1; \
{ switch ((int) INT_temp) { \
case 4: fputs (" boolean", out); break; \
case 5: fputs (" char", out); break; \
case 6: fputs (" float", out); break; \
case 7: fputs (" double", out); break; \
case 8: fputs (" byte", out); break; \
case 9: fputs (" short", out); break; \
case 10: fputs (" int", out); break; \
case 11: fputs (" long", out); break; \
default: fprintf (out, " <unknown type code %ld>", (long)INT_temp); break;\
} }
#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);
#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
#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); \
i = 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)
#define SPECIAL_ENTER(OPERAND_TYPE)
#define SPECIAL_BREAK(OPERAND_TYPE)
#define SPECIAL_THROW(OPERAND_TYPE)
#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) ;
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]);
}
}
}