void BytecodePrinter::print_field_or_method(int orig_i, int i, outputStream* st) {
ConstantPool* constants = method()->constants();
constantTag tag = constants->tag_at(i);
bool has_klass = true;
switch (tag.value()) {
case JVM_CONSTANT_InterfaceMethodref:
case JVM_CONSTANT_Methodref:
case JVM_CONSTANT_Fieldref:
break;
case JVM_CONSTANT_NameAndType:
case JVM_CONSTANT_InvokeDynamic:
has_klass = false;
break;
default:
st->print_cr(" bad tag=%d at %d", tag.value(), i);
return;
}
Symbol* name = constants->uncached_name_ref_at(i);
Symbol* signature = constants->uncached_signature_ref_at(i);
const char* sep = (tag.is_field() ? "/" : "");
if (has_klass) {
Symbol* klass = constants->klass_name_at(constants->uncached_klass_ref_index_at(i));
st->print_cr(" %d <%s.%s%s%s> ", i, klass->as_C_string(), name->as_C_string(), sep, signature->as_C_string());
} else {
if (tag.is_invoke_dynamic()) {
int bsm = constants->invoke_dynamic_bootstrap_method_ref_index_at(i);
st->print(" bsm=%d", bsm);
}
st->print_cr(" %d <%s%s%s>", i, name->as_C_string(), sep, signature->as_C_string());
}
}
void BytecodePrinter::print_attributes(int bci, outputStream* st) {
// Show attributes of pre-rewritten codes
Bytecodes::Code code = Bytecodes::java_code(raw_code());
// If the code doesn't have any fields there's nothing to print.
// note this is ==1 because the tableswitch and lookupswitch are
// zero size (for some reason) and we want to print stuff out for them.
if (Bytecodes::length_for(code) == 1) {
st->cr();
return;
}
switch(code) {
// Java specific bytecodes only matter.
case Bytecodes::_bipush:
st->print_cr(" " INT32_FORMAT, get_byte());
break;
case Bytecodes::_sipush:
st->print_cr(" " INT32_FORMAT, get_short());
break;
case Bytecodes::_ldc:
if (Bytecodes::uses_cp_cache(raw_code())) {
print_constant(get_index_u1_cpcache(), st);
} else {
print_constant(get_index_u1(), st);
}
break;
case Bytecodes::_ldc_w:
case Bytecodes::_ldc2_w:
if (Bytecodes::uses_cp_cache(raw_code())) {
print_constant(get_index_u2_cpcache(), st);
} else {
print_constant(get_index_u2(), st);
}
break;
case Bytecodes::_iload:
case Bytecodes::_lload:
case Bytecodes::_fload:
case Bytecodes::_dload:
case Bytecodes::_aload:
case Bytecodes::_istore:
case Bytecodes::_lstore:
case Bytecodes::_fstore:
case Bytecodes::_dstore:
case Bytecodes::_astore:
st->print_cr(" #%d", get_index_special());
break;
case Bytecodes::_iinc:
{ int index = get_index_special();
jint offset = is_wide() ? get_short(): get_byte();
st->print_cr(" #%d " INT32_FORMAT, index, offset);
}
break;
case Bytecodes::_newarray: {
BasicType atype = (BasicType)get_index_u1();
const char* str = type2name(atype);
if (str == NULL || atype == T_OBJECT || atype == T_ARRAY) {
assert(false, "Unidentified basic type");
}
st->print_cr(" %s", str);
}
break;
case Bytecodes::_anewarray: {
int klass_index = get_index_u2();
ConstantPool* constants = method()->constants();
Symbol* name = constants->klass_name_at(klass_index);
st->print_cr(" %s ", name->as_C_string());
}
break;
case Bytecodes::_multianewarray: {
int klass_index = get_index_u2();
int nof_dims = get_index_u1();
ConstantPool* constants = method()->constants();
Symbol* name = constants->klass_name_at(klass_index);
st->print_cr(" %s %d", name->as_C_string(), nof_dims);
}
break;
case Bytecodes::_ifeq:
case Bytecodes::_ifnull:
case Bytecodes::_iflt:
case Bytecodes::_ifle:
case Bytecodes::_ifne:
case Bytecodes::_ifnonnull:
case Bytecodes::_ifgt:
case Bytecodes::_ifge:
case Bytecodes::_if_icmpeq:
case Bytecodes::_if_icmpne:
case Bytecodes::_if_icmplt:
case Bytecodes::_if_icmpgt:
case Bytecodes::_if_icmple:
case Bytecodes::_if_icmpge:
case Bytecodes::_if_acmpeq:
case Bytecodes::_if_acmpne:
case Bytecodes::_goto:
case Bytecodes::_jsr:
st->print_cr(" %d", bci + get_short());
break;
case Bytecodes::_goto_w:
case Bytecodes::_jsr_w:
st->print_cr(" %d", bci + get_int());
break;
case Bytecodes::_ret: st->print_cr(" %d", get_index_special()); break;
case Bytecodes::_tableswitch:
{ align();
int default_dest = bci + get_int();
int lo = get_int();
int hi = get_int();
int len = hi - lo + 1;
jint* dest = NEW_RESOURCE_ARRAY(jint, len);
for (int i = 0; i < len; i++) {
dest[i] = bci + get_int();
}
st->print(" %d " INT32_FORMAT " " INT32_FORMAT " ",
default_dest, lo, hi);
int first = true;
for (int ll = lo; ll <= hi; ll++, first = false) {
int idx = ll - lo;
const char *format = first ? " %d:" INT32_FORMAT " (delta: %d)" :
", %d:" INT32_FORMAT " (delta: %d)";
st->print(format, ll, dest[idx], dest[idx]-bci);
}
st->cr();
}
break;
case Bytecodes::_lookupswitch:
{ align();
int default_dest = bci + get_int();
int len = get_int();
jint* key = NEW_RESOURCE_ARRAY(jint, len);
jint* dest = NEW_RESOURCE_ARRAY(jint, len);
for (int i = 0; i < len; i++) {
key [i] = get_int();
dest[i] = bci + get_int();
};
st->print(" %d %d ", default_dest, len);
bool first = true;
for (int ll = 0; ll < len; ll++, first = false) {
const char *format = first ? " " INT32_FORMAT ":" INT32_FORMAT :
", " INT32_FORMAT ":" INT32_FORMAT ;
st->print(format, key[ll], dest[ll]);
}
st->cr();
}
break;
case Bytecodes::_putstatic:
case Bytecodes::_getstatic:
case Bytecodes::_putfield:
case Bytecodes::_getfield:
print_field_or_method(get_index_u2_cpcache(), st);
break;
case Bytecodes::_invokevirtual:
case Bytecodes::_invokespecial:
case Bytecodes::_invokestatic:
print_field_or_method(get_index_u2_cpcache(), st);
break;
case Bytecodes::_invokeinterface:
{ int i = get_index_u2_cpcache();
int n = get_index_u1();
get_byte(); // ignore zero byte
print_field_or_method(i, st);
}
break;
case Bytecodes::_invokedynamic:
print_field_or_method(get_index_u4(), st);
break;
case Bytecodes::_new:
case Bytecodes::_checkcast:
case Bytecodes::_instanceof:
{ int i = get_index_u2();
ConstantPool* constants = method()->constants();
Symbol* name = constants->klass_name_at(i);
st->print_cr(" %d <%s>", i, name->as_C_string());
}
break;
case Bytecodes::_wide:
// length is zero not one, but printed with no more info.
break;
default:
ShouldNotReachHere();
break;
}
}
