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/* dumpclass.c -- display contents of a class_file
* Written by Charles Briscoe-Smith; refer to the file LEGAL for details.
*/
/* Interface definitions */
/* Dump the contents of class to stdout in human-readable form. */
extern void dumpclass(const class_file class);
#ifndef SEEN_dumpclass_h
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include "types.h"
static void
showaccessflags(u2 access, int in_method)
{
printf("Access flags:%s%s%s%s%s\n",
access & ACC_public ? " public" : "",
access & ACC_private ? " private" : "",
access & ACC_protected ? " protected" : "",
access & ACC_final ? " final" : "",
access & ACC_volatile ? " volatile" : "",
access & ACC_transient ? " transient" : "",
access & ACC_native ? " native" : "",
access & ACC_abstract ? " abstract" : "",
access & ACC_synchronised & in_method ? " synchronised" : "",
access & ACC_interface ? " interface" : "",
access & ACC_super &!in_method ? "" : " (without super flag; generated by old Sun compiler)",
);
}
void
dumpclass(const class_file *class)
{
u4 count;
printf("Version: major %d, minor %d\n", class->major_version,
class->minor_version);
printf("Number of constants: %d\n", class->const_count);
cp=(cp_info*) calloc(const_count, sizeof(cp_info));
tag=(u2*) calloc(const_count, sizeof(u2));
for (i1=1; i1<const_count; i1++) {
tag[i1]=readconst(fp, &cp[i1]);
if (tag[i1]==CONSTANT_Long
|| tag[i1]==CONSTANT_Double) {
i1++;
}
}
for (i1=0; i1<const_count; i1++) {
u4f u4f;
u8d u8d;
printf("Constant %d: ", i1);
if (i1==0) printf("reserved\n");
else if (tag[i1-1]==CONSTANT_Long
|| tag[i1-1]==CONSTANT_Double) printf("continuation word\n");
else switch (tag[i1]) {
case CONSTANT_Class:
printf("Class: %d (%s)\n", cp[i1].u2,
cp[cp[i1].u2].utf8);
break;
case CONSTANT_Fieldref:
printf("Fieldref: %d, %d (%s, %s, %s)\n",
cp[i1].u2x2.i1,
cp[i1].u2x2.i2,
cp[cp[cp[i1].u2x2.i1].u2].utf8,
cp[cp[cp[i1].u2x2.i2].u2x2.i1].utf8,
cp[cp[cp[i1].u2x2.i2].u2x2.i2].utf8);
break;
case CONSTANT_Methodref:
printf("Methodref: %d, %d (%s, %s, %s)\n",
cp[i1].u2x2.i1,
cp[i1].u2x2.i2,
cp[cp[cp[i1].u2x2.i1].u2].utf8,
cp[cp[cp[i1].u2x2.i2].u2x2.i1].utf8,
cp[cp[cp[i1].u2x2.i2].u2x2.i2].utf8);
break;
case CONSTANT_InterfaceMethodref:
printf("InterfaceMethodref: %d, %d (%s, %s, %s)\n",
cp[i1].u2x2.i1,
cp[i1].u2x2.i2,
cp[cp[cp[i1].u2x2.i1].u2].utf8,
cp[cp[cp[i1].u2x2.i2].u2x2.i1].utf8,
cp[cp[cp[i1].u2x2.i2].u2x2.i2].utf8);
break;
case CONSTANT_String:
printf("String: %d (\"%s\")\n", cp[i1].u2,
cp[cp[i1].u2].utf8);
break;
case CONSTANT_Integer:
printf("Integer: %ld\n", cp[i1].u4);
break;
case CONSTANT_Float:
u4f.u=cp[i1].u4;
printf("Float: %g\n", u4f.f);
break;
case CONSTANT_Long:
printf("Long: %qd\n", ((u8) cp[i1].u4 << 32) + cp[i1+1].u4);
break;
case CONSTANT_Double:
u8d.u=((u8) cp[i1].u4 << 32) + cp[i1+1].u4;
printf("Double: %g\n", u8d.d);
break;
case CONSTANT_NameAndType:
printf("NameAndType: %d, %d\n", cp[i1].u2x2.i1, cp[i1].u2x2.i2);
break;
case CONSTANT_Utf8:
printf("Utf8: \"%s\"\n", cp[i1].utf8);
break;
}
}
access=readu2(fp);
this=readu2(fp);
printf("This class: %d\n", this);
super=readu2(fp);
printf("Superclass: %d\n", super);
iface_count=readu2(fp);
printf("Number of interfaces: %d:", iface_count);
ifaces=(u2*) calloc(iface_count, sizeof(u2));
for (i1=0; i1<iface_count; i1++) {
ifaces[i1]=readu2(fp);
printf(" %d", ifaces[i1]);
}
field_count=readu2(fp);
printf("\nNumber of fields: %d\n", field_count);
meth_count=readu2(fp);
printf("Number of methods: %d\n", meth_count);
attr_count=readu2(fp);
printf("Number of attributes: %d\n", attr_count);
if (feof(fp)) {
error("%s", "premature end of file");
}
return 0;
}
#endif /* SEEN_readclass_h */
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