6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "precompiled.hpp"
#include "interpreter/rewriter.hpp"
#include "memory/oopFactory.hpp"
#include "prims/methodHandleWalk.hpp"
/*
* JSR 292 reference implementation: method handle structure analysis
*/
// -----------------------------------------------------------------------------
// MethodHandleChain
void MethodHandleChain::set_method_handle(Handle mh, TRAPS) {
if (!java_dyn_MethodHandle::is_instance(mh())) lose("bad method handle", CHECK);
// set current method handle and unpack partially
_method_handle = mh;
_is_last = false;
_is_bound = false;
_arg_slot = -1;
_arg_type = T_VOID;
_conversion = -1;
_last_invoke = Bytecodes::_nop; //arbitrary non-garbage
if (sun_dyn_DirectMethodHandle::is_instance(mh())) {
set_last_method(mh(), THREAD);
return;
}
if (sun_dyn_AdapterMethodHandle::is_instance(mh())) {
_conversion = AdapterMethodHandle_conversion();
assert(_conversion != -1, "bad conv value");
assert(sun_dyn_BoundMethodHandle::is_instance(mh()), "also BMH");
}
if (sun_dyn_BoundMethodHandle::is_instance(mh())) {
if (!is_adapter()) // keep AMH and BMH separate in this model
_is_bound = true;
_arg_slot = BoundMethodHandle_vmargslot();
oop target = MethodHandle_vmtarget_oop();
if (!is_bound() || java_dyn_MethodHandle::is_instance(target)) {
_arg_type = compute_bound_arg_type(target, NULL, _arg_slot, CHECK);
} else if (target != NULL && target->is_method()) {
methodOop m = (methodOop) target;
_arg_type = compute_bound_arg_type(NULL, m, _arg_slot, CHECK);
set_last_method(mh(), CHECK);
} else {
_is_bound = false; // lose!
}
}
if (is_bound() && _arg_type == T_VOID) {
lose("bad vmargslot", CHECK);
}
if (!is_bound() && !is_adapter()) {
lose("unrecognized MH type", CHECK);
}
}
void MethodHandleChain::set_last_method(oop target, TRAPS) {
_is_last = true;
klassOop receiver_limit_oop = NULL;
int flags = 0;
methodOop m = MethodHandles::decode_method(target, receiver_limit_oop, flags);
_last_method = methodHandle(THREAD, m);
if ((flags & MethodHandles::_dmf_has_receiver) == 0)
_last_invoke = Bytecodes::_invokestatic;
else if ((flags & MethodHandles::_dmf_does_dispatch) == 0)
_last_invoke = Bytecodes::_invokespecial;
else if ((flags & MethodHandles::_dmf_from_interface) != 0)
_last_invoke = Bytecodes::_invokeinterface;
else
_last_invoke = Bytecodes::_invokevirtual;
}
BasicType MethodHandleChain::compute_bound_arg_type(oop target, methodOop m, int arg_slot, TRAPS) {
// There is no direct indication of whether the argument is primitive or not.
// It is implied by the _vmentry code, and by the MethodType of the target.
// FIXME: Make it explicit MethodHandleImpl refactors out from MethodHandle
BasicType arg_type = T_VOID;
if (target != NULL) {
oop mtype = java_dyn_MethodHandle::type(target);
int arg_num = MethodHandles::argument_slot_to_argnum(mtype, arg_slot);
if (arg_num >= 0) {
oop ptype = java_dyn_MethodType::ptype(mtype, arg_num);
arg_type = java_lang_Class::as_BasicType(ptype);
}
} else if (m != NULL) {
// figure out the argument type from the slot
// FIXME: make this explicit in the MH
int cur_slot = m->size_of_parameters();
if (arg_slot >= cur_slot)
return T_VOID;
if (!m->is_static()) {
cur_slot -= type2size[T_OBJECT];
if (cur_slot == arg_slot)
return T_OBJECT;
}
for (SignatureStream ss(m->signature()); !ss.is_done(); ss.next()) {
BasicType bt = ss.type();
cur_slot -= type2size[bt];
if (cur_slot <= arg_slot) {
if (cur_slot == arg_slot)
arg_type = bt;
break;
}
}
}
if (arg_type == T_ARRAY)
arg_type = T_OBJECT;
return arg_type;
}
void MethodHandleChain::lose(const char* msg, TRAPS) {
assert(false, "lose");
_lose_message = msg;
if (!THREAD->is_Java_thread() || ((JavaThread*)THREAD)->thread_state() != _thread_in_vm) {
// throw a preallocated exception
THROW_OOP(Universe::virtual_machine_error_instance());
}
THROW_MSG(vmSymbols::java_lang_InternalError(), msg);
}
// -----------------------------------------------------------------------------
// MethodHandleWalker
Bytecodes::Code MethodHandleWalker::conversion_code(BasicType src, BasicType dest) {
if (is_subword_type(src)) {
src = T_INT; // all subword src types act like int
}
if (src == dest) {
return Bytecodes::_nop;
}
#define SRC_DEST(s,d) (((int)(s) << 4) + (int)(d))
switch (SRC_DEST(src, dest)) {
case SRC_DEST(T_INT, T_LONG): return Bytecodes::_i2l;
case SRC_DEST(T_INT, T_FLOAT): return Bytecodes::_i2f;
case SRC_DEST(T_INT, T_DOUBLE): return Bytecodes::_i2d;
case SRC_DEST(T_INT, T_BYTE): return Bytecodes::_i2b;
case SRC_DEST(T_INT, T_CHAR): return Bytecodes::_i2c;
case SRC_DEST(T_INT, T_SHORT): return Bytecodes::_i2s;
case SRC_DEST(T_LONG, T_INT): return Bytecodes::_l2i;
case SRC_DEST(T_LONG, T_FLOAT): return Bytecodes::_l2f;
case SRC_DEST(T_LONG, T_DOUBLE): return Bytecodes::_l2d;
case SRC_DEST(T_FLOAT, T_INT): return Bytecodes::_f2i;
case SRC_DEST(T_FLOAT, T_LONG): return Bytecodes::_f2l;
case SRC_DEST(T_FLOAT, T_DOUBLE): return Bytecodes::_f2d;
case SRC_DEST(T_DOUBLE, T_INT): return Bytecodes::_d2i;
case SRC_DEST(T_DOUBLE, T_LONG): return Bytecodes::_d2l;
case SRC_DEST(T_DOUBLE, T_FLOAT): return Bytecodes::_d2f;
}
#undef SRC_DEST
// cannot do it in one step, or at all
return Bytecodes::_illegal;
}
// -----------------------------------------------------------------------------
// MethodHandleWalker::walk
//
MethodHandleWalker::ArgToken
MethodHandleWalker::walk(TRAPS) {
ArgToken empty = ArgToken(); // Empty return value.
walk_incoming_state(CHECK_(empty));
for (;;) {
set_method_handle(chain().method_handle_oop());
assert(_outgoing_argc == argument_count_slow(), "empty slots under control");
if (chain().is_adapter()) {
int conv_op = chain().adapter_conversion_op();
int arg_slot = chain().adapter_arg_slot();
SlotState* arg_state = slot_state(arg_slot);
if (arg_state == NULL
&& conv_op > sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW) {
lose("bad argument index", CHECK_(empty));
}
// perform the adapter action
switch (chain().adapter_conversion_op()) {
case sun_dyn_AdapterMethodHandle::OP_RETYPE_ONLY:
// No changes to arguments; pass the bits through.
break;
case sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW: {
// To keep the verifier happy, emit bitwise ("raw") conversions as needed.
// See MethodHandles::same_basic_type_for_arguments for allowed conversions.
Handle incoming_mtype(THREAD, chain().method_type_oop());
oop outgoing_mh_oop = chain().vmtarget_oop();
if (!java_dyn_MethodHandle::is_instance(outgoing_mh_oop))
lose("outgoing target not a MethodHandle", CHECK_(empty));
Handle outgoing_mtype(THREAD, java_dyn_MethodHandle::type(outgoing_mh_oop));
outgoing_mh_oop = NULL; // GC safety
int nptypes = java_dyn_MethodType::ptype_count(outgoing_mtype());
if (nptypes != java_dyn_MethodType::ptype_count(incoming_mtype()))
lose("incoming and outgoing parameter count do not agree", CHECK_(empty));
for (int i = 0, slot = _outgoing.length() - 1; slot >= 0; slot--) {
SlotState* arg_state = slot_state(slot);
if (arg_state->_type == T_VOID) continue;
ArgToken arg = _outgoing.at(slot)._arg;
klassOop in_klass = NULL;
klassOop out_klass = NULL;
BasicType inpbt = java_lang_Class::as_BasicType(java_dyn_MethodType::ptype(incoming_mtype(), i), &in_klass);
BasicType outpbt = java_lang_Class::as_BasicType(java_dyn_MethodType::ptype(outgoing_mtype(), i), &out_klass);
assert(inpbt == arg.basic_type(), "sanity");
if (inpbt != outpbt) {
vmIntrinsics::ID iid = vmIntrinsics::for_raw_conversion(inpbt, outpbt);
if (iid == vmIntrinsics::_none) {
lose("no raw conversion method", CHECK_(empty));
}
ArgToken arglist[2];
arglist[0] = arg; // outgoing 'this'
arglist[1] = ArgToken(); // sentinel
arg = make_invoke(NULL, iid, Bytecodes::_invokestatic, false, 1, &arglist[0], CHECK_(empty));
change_argument(inpbt, slot, outpbt, arg);
}
i++; // We need to skip void slots at the top of the loop.
}
BasicType inrbt = java_lang_Class::as_BasicType(java_dyn_MethodType::rtype(incoming_mtype()));
BasicType outrbt = java_lang_Class::as_BasicType(java_dyn_MethodType::rtype(outgoing_mtype()));
if (inrbt != outrbt) {
if (inrbt == T_INT && outrbt == T_VOID) {
// See comments in MethodHandles::same_basic_type_for_arguments.
} else {
assert(false, "IMPLEMENT ME");
lose("no raw conversion method", CHECK_(empty));
}
}
break;
}
case sun_dyn_AdapterMethodHandle::OP_CHECK_CAST: {
// checkcast the Nth outgoing argument in place
klassOop dest_klass = NULL;
BasicType dest = java_lang_Class::as_BasicType(chain().adapter_arg_oop(), &dest_klass);
assert(dest == T_OBJECT, "");
assert(dest == arg_state->_type, "");
ArgToken arg = arg_state->_arg;
ArgToken new_arg = make_conversion(T_OBJECT, dest_klass, Bytecodes::_checkcast, arg, CHECK_(empty));
assert(arg.index() == new_arg.index(), "should be the same index");
debug_only(dest_klass = (klassOop)badOop);
break;
}
case sun_dyn_AdapterMethodHandle::OP_PRIM_TO_PRIM: {
// i2l, etc., on the Nth outgoing argument in place
BasicType src = chain().adapter_conversion_src_type(),
dest = chain().adapter_conversion_dest_type();
Bytecodes::Code bc = conversion_code(src, dest);
ArgToken arg = arg_state->_arg;
if (bc == Bytecodes::_nop) {
break;
} else if (bc != Bytecodes::_illegal) {
arg = make_conversion(dest, NULL, bc, arg, CHECK_(empty));
} else if (is_subword_type(dest)) {
bc = conversion_code(src, T_INT);
if (bc != Bytecodes::_illegal) {
arg = make_conversion(dest, NULL, bc, arg, CHECK_(empty));
bc = conversion_code(T_INT, dest);
arg = make_conversion(dest, NULL, bc, arg, CHECK_(empty));
}
}
if (bc == Bytecodes::_illegal) {
lose("bad primitive conversion", CHECK_(empty));
}
change_argument(src, arg_slot, dest, arg);
break;
}
case sun_dyn_AdapterMethodHandle::OP_REF_TO_PRIM: {
// checkcast to wrapper type & call intValue, etc.
BasicType dest = chain().adapter_conversion_dest_type();
ArgToken arg = arg_state->_arg;
arg = make_conversion(T_OBJECT, SystemDictionary::box_klass(dest),
Bytecodes::_checkcast, arg, CHECK_(empty));
vmIntrinsics::ID unboxer = vmIntrinsics::for_unboxing(dest);
if (unboxer == vmIntrinsics::_none) {
lose("no unboxing method", CHECK_(empty));
}
ArgToken arglist[2];
arglist[0] = arg; // outgoing 'this'
arglist[1] = ArgToken(); // sentinel
arg = make_invoke(NULL, unboxer, Bytecodes::_invokevirtual, false, 1, &arglist[0], CHECK_(empty));
change_argument(T_OBJECT, arg_slot, dest, arg);
break;
}
case sun_dyn_AdapterMethodHandle::OP_PRIM_TO_REF: {
// call wrapper type.valueOf
BasicType src = chain().adapter_conversion_src_type();
ArgToken arg = arg_state->_arg;
vmIntrinsics::ID boxer = vmIntrinsics::for_boxing(src);
if (boxer == vmIntrinsics::_none) {
lose("no boxing method", CHECK_(empty));
}
ArgToken arglist[2];
arglist[0] = arg; // outgoing value
arglist[1] = ArgToken(); // sentinel
arg = make_invoke(NULL, boxer, Bytecodes::_invokevirtual, false, 1, &arglist[0], CHECK_(empty));
change_argument(src, arg_slot, T_OBJECT, arg);
break;
}
case sun_dyn_AdapterMethodHandle::OP_SWAP_ARGS: {
int dest_arg_slot = chain().adapter_conversion_vminfo();
if (!slot_has_argument(dest_arg_slot)) {
lose("bad swap index", CHECK_(empty));
}
// a simple swap between two arguments
SlotState* dest_arg_state = slot_state(dest_arg_slot);
SlotState temp = (*dest_arg_state);
(*dest_arg_state) = (*arg_state);
(*arg_state) = temp;
break;
}
case sun_dyn_AdapterMethodHandle::OP_ROT_ARGS: {
int dest_arg_slot = chain().adapter_conversion_vminfo();
if (!slot_has_argument(dest_arg_slot) || arg_slot == dest_arg_slot) {
lose("bad rotate index", CHECK_(empty));
}
SlotState* dest_arg_state = slot_state(dest_arg_slot);
// Rotate the source argument (plus following N slots) into the
// position occupied by the dest argument (plus following N slots).
int rotate_count = type2size[dest_arg_state->_type];
// (no other rotate counts are currently supported)
if (arg_slot < dest_arg_slot) {
for (int i = 0; i < rotate_count; i++) {
SlotState temp = _outgoing.at(arg_slot);
_outgoing.remove_at(arg_slot);
_outgoing.insert_before(dest_arg_slot + rotate_count - 1, temp);
}
} else { // arg_slot > dest_arg_slot
for (int i = 0; i < rotate_count; i++) {
SlotState temp = _outgoing.at(arg_slot + rotate_count - 1);
_outgoing.remove_at(arg_slot + rotate_count - 1);
_outgoing.insert_before(dest_arg_slot, temp);
}
}
break;
}
case sun_dyn_AdapterMethodHandle::OP_DUP_ARGS: {
int dup_slots = chain().adapter_conversion_stack_pushes();
if (dup_slots <= 0) {
lose("bad dup count", CHECK_(empty));
}
for (int i = 0; i < dup_slots; i++) {
SlotState* dup = slot_state(arg_slot + 2*i);
if (dup == NULL) break; // safety net
if (dup->_type != T_VOID) _outgoing_argc += 1;
_outgoing.insert_before(i, (*dup));
}
break;
}
case sun_dyn_AdapterMethodHandle::OP_DROP_ARGS: {
int drop_slots = -chain().adapter_conversion_stack_pushes();
if (drop_slots <= 0) {
lose("bad drop count", CHECK_(empty));
}
for (int i = 0; i < drop_slots; i++) {
SlotState* drop = slot_state(arg_slot);
if (drop == NULL) break; // safety net
if (drop->_type != T_VOID) _outgoing_argc -= 1;
_outgoing.remove_at(arg_slot);
}
break;
}
case sun_dyn_AdapterMethodHandle::OP_COLLECT_ARGS: { //NYI, may GC
lose("unimplemented", CHECK_(empty));
break;
}
case sun_dyn_AdapterMethodHandle::OP_SPREAD_ARGS: {
klassOop array_klass_oop = NULL;
BasicType array_type = java_lang_Class::as_BasicType(chain().adapter_arg_oop(),
&array_klass_oop);
assert(array_type == T_OBJECT, "");
assert(Klass::cast(array_klass_oop)->oop_is_array(), "");
arrayKlassHandle array_klass(THREAD, array_klass_oop);
debug_only(array_klass_oop = (klassOop)badOop);
klassOop element_klass_oop = NULL;
BasicType element_type = java_lang_Class::as_BasicType(array_klass->component_mirror(),
&element_klass_oop);
KlassHandle element_klass(THREAD, element_klass_oop);
debug_only(element_klass_oop = (klassOop)badOop);
// Fetch the argument, which we will cast to the required array type.
assert(arg_state->_type == T_OBJECT, "");
ArgToken array_arg = arg_state->_arg;
array_arg = make_conversion(T_OBJECT, array_klass(), Bytecodes::_checkcast, array_arg, CHECK_(empty));
change_argument(T_OBJECT, arg_slot, T_VOID, ArgToken(tt_void));
// Check the required length.
int spread_slots = 1 + chain().adapter_conversion_stack_pushes();
int spread_length = spread_slots;
if (type2size[element_type] == 2) {
if (spread_slots % 2 != 0) spread_slots = -1; // force error
spread_length = spread_slots / 2;
}
if (spread_slots < 0) {
lose("bad spread length", CHECK_(empty));
}
jvalue length_jvalue; length_jvalue.i = spread_length;
ArgToken length_arg = make_prim_constant(T_INT, &length_jvalue, CHECK_(empty));
// Call a built-in method known to the JVM to validate the length.
ArgToken arglist[3];
arglist[0] = array_arg; // value to check
arglist[1] = length_arg; // length to check
arglist[2] = ArgToken(); // sentinel
make_invoke(NULL, vmIntrinsics::_checkSpreadArgument,
Bytecodes::_invokestatic, false, 3, &arglist[0], CHECK_(empty));
// Spread out the array elements.
Bytecodes::Code aload_op = Bytecodes::_aaload;
if (element_type != T_OBJECT) {
lose("primitive array NYI", CHECK_(empty));
}
int ap = arg_slot;
for (int i = 0; i < spread_length; i++) {
jvalue offset_jvalue; offset_jvalue.i = i;
ArgToken offset_arg = make_prim_constant(T_INT, &offset_jvalue, CHECK_(empty));
ArgToken element_arg = make_fetch(element_type, element_klass(), aload_op, array_arg, offset_arg, CHECK_(empty));
change_argument(T_VOID, ap, element_type, element_arg);
ap += type2size[element_type];
}
break;
}
case sun_dyn_AdapterMethodHandle::OP_FLYBY: //NYI, runs Java code
case sun_dyn_AdapterMethodHandle::OP_RICOCHET: //NYI, runs Java code
lose("unimplemented", CHECK_(empty));
break;
default:
lose("bad adapter conversion", CHECK_(empty));
break;
}
}
if (chain().is_bound()) {
// push a new argument
BasicType arg_type = chain().bound_arg_type();
jint arg_slot = chain().bound_arg_slot();
oop arg_oop = chain().bound_arg_oop();
ArgToken arg;
if (arg_type == T_OBJECT) {
arg = make_oop_constant(arg_oop, CHECK_(empty));
} else {
jvalue arg_value;
BasicType bt = java_lang_boxing_object::get_value(arg_oop, &arg_value);
if (bt == arg_type) {
arg = make_prim_constant(arg_type, &arg_value, CHECK_(empty));
} else {
lose("bad bound value", CHECK_(empty));
}
}
debug_only(arg_oop = badOop);
change_argument(T_VOID, arg_slot, arg_type, arg);
}
// this test must come after the body of the loop
if (!chain().is_last()) {
chain().next(CHECK_(empty));
} else {
break;
}
}
// finish the sequence with a tail-call to the ultimate target
// parameters are passed in logical order (recv 1st), not slot order
ArgToken* arglist = NEW_RESOURCE_ARRAY(ArgToken, _outgoing.length() + 1);
int ap = 0;
for (int i = _outgoing.length() - 1; i >= 0; i--) {
SlotState* arg_state = slot_state(i);
if (arg_state->_type == T_VOID) continue;
arglist[ap++] = _outgoing.at(i)._arg;
}
assert(ap == _outgoing_argc, "");
arglist[ap] = ArgToken(); // add a sentinel, for the sake of asserts
return make_invoke(chain().last_method_oop(),
vmIntrinsics::_none,
chain().last_invoke_code(), true,
ap, arglist, THREAD);
}
// -----------------------------------------------------------------------------
// MethodHandleWalker::walk_incoming_state
//
void MethodHandleWalker::walk_incoming_state(TRAPS) {
Handle mtype(THREAD, chain().method_type_oop());
int nptypes = java_dyn_MethodType::ptype_count(mtype());
_outgoing_argc = nptypes;
int argp = nptypes - 1;
if (argp >= 0) {
_outgoing.at_grow(argp, make_state(T_VOID, ArgToken(tt_void))); // presize
}
for (int i = 0; i < nptypes; i++) {
klassOop arg_type_klass = NULL;
BasicType arg_type = java_lang_Class::as_BasicType(
java_dyn_MethodType::ptype(mtype(), i), &arg_type_klass);
int index = new_local_index(arg_type);
ArgToken arg = make_parameter(arg_type, arg_type_klass, index, CHECK);
debug_only(arg_type_klass = (klassOop) NULL);
_outgoing.at_put(argp, make_state(arg_type, arg));
if (type2size[arg_type] == 2) {
// add the extra slot, so we can model the JVM stack
_outgoing.insert_before(argp+1, make_state(T_VOID, ArgToken(tt_void)));
}
--argp;
}
// call make_parameter at the end of the list for the return type
klassOop ret_type_klass = NULL;
BasicType ret_type = java_lang_Class::as_BasicType(
java_dyn_MethodType::rtype(mtype()), &ret_type_klass);
ArgToken ret = make_parameter(ret_type, ret_type_klass, -1, CHECK);
// ignore ret; client can catch it if needed
}
// -----------------------------------------------------------------------------
// MethodHandleWalker::change_argument
//
// This is messy because some kinds of arguments are paired with
// companion slots containing an empty value.
void MethodHandleWalker::change_argument(BasicType old_type, int slot, BasicType new_type,
const ArgToken& new_arg) {
int old_size = type2size[old_type];
int new_size = type2size[new_type];
if (old_size == new_size) {
// simple case first
_outgoing.at_put(slot, make_state(new_type, new_arg));
} else if (old_size > new_size) {
for (int i = old_size - 1; i >= new_size; i--) {
assert((i != 0) == (_outgoing.at(slot + i)._type == T_VOID), "");
_outgoing.remove_at(slot + i);
}
if (new_size > 0)
_outgoing.at_put(slot, make_state(new_type, new_arg));
else
_outgoing_argc -= 1; // deleted a real argument
} else {
for (int i = old_size; i < new_size; i++) {
_outgoing.insert_before(slot + i, make_state(T_VOID, ArgToken(tt_void)));
}
_outgoing.at_put(slot, make_state(new_type, new_arg));
if (old_size == 0)
_outgoing_argc += 1; // inserted a real argument
}
}
#ifdef ASSERT
int MethodHandleWalker::argument_count_slow() {
int args_seen = 0;
for (int i = _outgoing.length() - 1; i >= 0; i--) {
if (_outgoing.at(i)._type != T_VOID) {
++args_seen;
}
}
return args_seen;
}
#endif
// -----------------------------------------------------------------------------
// MethodHandleCompiler
MethodHandleCompiler::MethodHandleCompiler(Handle root, methodHandle callee, bool is_invokedynamic, TRAPS)
: MethodHandleWalker(root, is_invokedynamic, THREAD),
_callee(callee),
_thread(THREAD),
_bytecode(THREAD, 50),
_constants(THREAD, 10),
_cur_stack(0),
_max_stack(0),
_rtype(T_ILLEGAL)
{
// Element zero is always the null constant.
(void) _constants.append(NULL);
// Set name and signature index.
_name_index = cpool_symbol_put(_callee->name());
_signature_index = cpool_symbol_put(_callee->signature());
// Get return type klass.
Handle first_mtype(THREAD, chain().method_type_oop());
// _rklass is NULL for primitives.
_rtype = java_lang_Class::as_BasicType(java_dyn_MethodType::rtype(first_mtype()), &_rklass);
if (_rtype == T_ARRAY) _rtype = T_OBJECT;
int params = _callee->size_of_parameters(); // Incoming arguments plus receiver.
_num_params = for_invokedynamic() ? params - 1 : params; // XXX Check if callee is static?
}
// -----------------------------------------------------------------------------
// MethodHandleCompiler::compile
//
// Compile this MethodHandle into a bytecode adapter and return a
// methodOop.
methodHandle MethodHandleCompiler::compile(TRAPS) {
assert(_thread == THREAD, "must be same thread");
methodHandle nullHandle;
(void) walk(CHECK_(nullHandle));
return get_method_oop(CHECK_(nullHandle));
}
void MethodHandleCompiler::emit_bc(Bytecodes::Code op, int index) {
Bytecodes::check(op); // Are we legal?
switch (op) {
// b
case Bytecodes::_aconst_null:
case Bytecodes::_iconst_m1:
case Bytecodes::_iconst_0:
case Bytecodes::_iconst_1:
case Bytecodes::_iconst_2:
case Bytecodes::_iconst_3:
case Bytecodes::_iconst_4:
case Bytecodes::_iconst_5:
case Bytecodes::_lconst_0:
case Bytecodes::_lconst_1:
case Bytecodes::_fconst_0:
case Bytecodes::_fconst_1:
case Bytecodes::_fconst_2:
case Bytecodes::_dconst_0:
case Bytecodes::_dconst_1:
case Bytecodes::_iload_0:
case Bytecodes::_iload_1:
case Bytecodes::_iload_2:
case Bytecodes::_iload_3:
case Bytecodes::_lload_0:
case Bytecodes::_lload_1:
case Bytecodes::_lload_2:
case Bytecodes::_lload_3:
case Bytecodes::_fload_0:
case Bytecodes::_fload_1:
case Bytecodes::_fload_2:
case Bytecodes::_fload_3:
case Bytecodes::_dload_0:
case Bytecodes::_dload_1:
case Bytecodes::_dload_2:
case Bytecodes::_dload_3:
case Bytecodes::_aload_0:
case Bytecodes::_aload_1:
case Bytecodes::_aload_2:
case Bytecodes::_aload_3:
case Bytecodes::_istore_0:
case Bytecodes::_istore_1:
case Bytecodes::_istore_2:
case Bytecodes::_istore_3:
case Bytecodes::_lstore_0:
case Bytecodes::_lstore_1:
case Bytecodes::_lstore_2:
case Bytecodes::_lstore_3:
case Bytecodes::_fstore_0:
case Bytecodes::_fstore_1:
case Bytecodes::_fstore_2:
case Bytecodes::_fstore_3:
case Bytecodes::_dstore_0:
case Bytecodes::_dstore_1:
case Bytecodes::_dstore_2:
case Bytecodes::_dstore_3:
case Bytecodes::_astore_0:
case Bytecodes::_astore_1:
case Bytecodes::_astore_2:
case Bytecodes::_astore_3:
case Bytecodes::_i2l:
case Bytecodes::_i2f:
case Bytecodes::_i2d:
case Bytecodes::_i2b:
case Bytecodes::_i2c:
case Bytecodes::_i2s:
case Bytecodes::_l2i:
case Bytecodes::_l2f:
case Bytecodes::_l2d:
case Bytecodes::_f2i:
case Bytecodes::_f2l:
case Bytecodes::_f2d:
case Bytecodes::_d2i:
case Bytecodes::_d2l:
case Bytecodes::_d2f:
case Bytecodes::_ireturn:
case Bytecodes::_lreturn:
case Bytecodes::_freturn:
case Bytecodes::_dreturn:
case Bytecodes::_areturn:
case Bytecodes::_return:
assert(Bytecodes::format_bits(op, false) == Bytecodes::_fmt_b, "wrong bytecode format");
_bytecode.push(op);
break;
// bi
case Bytecodes::_ldc:
assert(Bytecodes::format_bits(op, false) == (Bytecodes::_fmt_b|Bytecodes::_fmt_has_k), "wrong bytecode format");
assert((char) index == index, "index does not fit in 8-bit");
_bytecode.push(op);
_bytecode.push(index);
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:
assert(Bytecodes::format_bits(op, false) == Bytecodes::_fmt_bi, "wrong bytecode format");
assert((char) index == index, "index does not fit in 8-bit");
_bytecode.push(op);
_bytecode.push(index);
break;
// bkk
case Bytecodes::_ldc_w:
case Bytecodes::_ldc2_w:
case Bytecodes::_checkcast:
assert(Bytecodes::format_bits(op, false) == Bytecodes::_fmt_bkk, "wrong bytecode format");
assert((short) index == index, "index does not fit in 16-bit");
_bytecode.push(op);
_bytecode.push(index >> 8);
_bytecode.push(index);
break;
// bJJ
case Bytecodes::_invokestatic:
case Bytecodes::_invokespecial:
case Bytecodes::_invokevirtual:
assert(Bytecodes::format_bits(op, false) == Bytecodes::_fmt_bJJ, "wrong bytecode format");
assert((short) index == index, "index does not fit in 16-bit");
_bytecode.push(op);
_bytecode.push(index >> 8);
_bytecode.push(index);
break;
default:
ShouldNotReachHere();
}
}
void MethodHandleCompiler::emit_load(BasicType bt, int index) {
if (index <= 3) {
switch (bt) {
case T_BOOLEAN: case T_BYTE: case T_CHAR: case T_SHORT:
case T_INT: emit_bc(Bytecodes::cast(Bytecodes::_iload_0 + index)); break;
case T_LONG: emit_bc(Bytecodes::cast(Bytecodes::_lload_0 + index)); break;
case T_FLOAT: emit_bc(Bytecodes::cast(Bytecodes::_fload_0 + index)); break;
case T_DOUBLE: emit_bc(Bytecodes::cast(Bytecodes::_dload_0 + index)); break;
case T_OBJECT: emit_bc(Bytecodes::cast(Bytecodes::_aload_0 + index)); break;
default:
ShouldNotReachHere();
}
}
else {
switch (bt) {
case T_BOOLEAN: case T_BYTE: case T_CHAR: case T_SHORT:
case T_INT: emit_bc(Bytecodes::_iload, index); break;
case T_LONG: emit_bc(Bytecodes::_lload, index); break;
case T_FLOAT: emit_bc(Bytecodes::_fload, index); break;
case T_DOUBLE: emit_bc(Bytecodes::_dload, index); break;
case T_OBJECT: emit_bc(Bytecodes::_aload, index); break;
default:
ShouldNotReachHere();
}
}
stack_push(bt);
}
void MethodHandleCompiler::emit_store(BasicType bt, int index) {
if (index <= 3) {
switch (bt) {
case T_BOOLEAN: case T_BYTE: case T_CHAR: case T_SHORT:
case T_INT: emit_bc(Bytecodes::cast(Bytecodes::_istore_0 + index)); break;
case T_LONG: emit_bc(Bytecodes::cast(Bytecodes::_lstore_0 + index)); break;
case T_FLOAT: emit_bc(Bytecodes::cast(Bytecodes::_fstore_0 + index)); break;
case T_DOUBLE: emit_bc(Bytecodes::cast(Bytecodes::_dstore_0 + index)); break;
case T_OBJECT: emit_bc(Bytecodes::cast(Bytecodes::_astore_0 + index)); break;
default:
ShouldNotReachHere();
}
}
else {
switch (bt) {
case T_BOOLEAN: case T_BYTE: case T_CHAR: case T_SHORT:
case T_INT: emit_bc(Bytecodes::_istore, index); break;
case T_LONG: emit_bc(Bytecodes::_lstore, index); break;
case T_FLOAT: emit_bc(Bytecodes::_fstore, index); break;
case T_DOUBLE: emit_bc(Bytecodes::_dstore, index); break;
case T_OBJECT: emit_bc(Bytecodes::_astore, index); break;
default:
ShouldNotReachHere();
}
}
stack_pop(bt);
}
void MethodHandleCompiler::emit_load_constant(ArgToken arg) {
BasicType bt = arg.basic_type();
switch (bt) {
case T_INT: {
jint value = arg.get_jint();
if (-1 <= value && value <= 5)
emit_bc(Bytecodes::cast(Bytecodes::_iconst_0 + value));
else
emit_bc(Bytecodes::_ldc, cpool_int_put(value));
break;
}
case T_LONG: {
jlong value = arg.get_jlong();
if (0 <= value && value <= 1)
emit_bc(Bytecodes::cast(Bytecodes::_lconst_0 + (int) value));
else
emit_bc(Bytecodes::_ldc2_w, cpool_long_put(value));
break;
}
case T_FLOAT: {
jfloat value = arg.get_jfloat();
if (value == 0.0 || value == 1.0 || value == 2.0)
emit_bc(Bytecodes::cast(Bytecodes::_fconst_0 + (int) value));
else
emit_bc(Bytecodes::_ldc, cpool_float_put(value));
break;
}
case T_DOUBLE: {
jdouble value = arg.get_jdouble();
if (value == 0.0 || value == 1.0)
emit_bc(Bytecodes::cast(Bytecodes::_dconst_0 + (int) value));
else
emit_bc(Bytecodes::_ldc2_w, cpool_double_put(value));
break;
}
case T_OBJECT: {
Handle value = arg.object();
if (value.is_null())
emit_bc(Bytecodes::_aconst_null);
else
emit_bc(Bytecodes::_ldc, cpool_object_put(value));
break;
}
default:
ShouldNotReachHere();
}
stack_push(bt);
}
MethodHandleWalker::ArgToken
MethodHandleCompiler::make_conversion(BasicType type, klassOop tk, Bytecodes::Code op,
const ArgToken& src, TRAPS) {
BasicType srctype = src.basic_type();
int index = src.index();
switch (op) {
case Bytecodes::_i2l:
case Bytecodes::_i2f:
case Bytecodes::_i2d:
case Bytecodes::_i2b:
case Bytecodes::_i2c:
case Bytecodes::_i2s:
case Bytecodes::_l2i:
case Bytecodes::_l2f:
case Bytecodes::_l2d:
case Bytecodes::_f2i:
case Bytecodes::_f2l:
case Bytecodes::_f2d:
case Bytecodes::_d2i:
case Bytecodes::_d2l:
case Bytecodes::_d2f:
emit_load(srctype, index);
stack_pop(srctype); // pop the src type
emit_bc(op);
stack_push(type); // push the dest value
if (srctype != type)
index = new_local_index(type);
emit_store(type, index);
break;
case Bytecodes::_checkcast:
emit_load(srctype, index);
emit_bc(op, cpool_klass_put(tk));
emit_store(srctype, index);
break;
default:
ShouldNotReachHere();
}
return make_parameter(type, tk, index, THREAD);
}
// -----------------------------------------------------------------------------
// MethodHandleCompiler
//
static jvalue zero_jvalue;
// Emit bytecodes for the given invoke instruction.
MethodHandleWalker::ArgToken
MethodHandleCompiler::make_invoke(methodOop m, vmIntrinsics::ID iid,
Bytecodes::Code op, bool tailcall,
int argc, MethodHandleWalker::ArgToken* argv,
TRAPS) {
if (m == NULL) {
// Get the intrinsic methodOop.
m = vmIntrinsics::method_for(iid);
}
klassOop klass = m->method_holder();
symbolOop name = m->name();
symbolOop signature = m->signature();
if (tailcall) {
// Actually, in order to make these methods more recognizable,
// let's put them in holder classes MethodHandle and InvokeDynamic.
// That way stack walkers and compiler heuristics can recognize them.
_target_klass = (for_invokedynamic()
? SystemDictionary::InvokeDynamic_klass()
: SystemDictionary::MethodHandle_klass());
}
// instanceKlass* ik = instanceKlass::cast(klass);
// tty->print_cr("MethodHandleCompiler::make_invoke: %s %s.%s%s", Bytecodes::name(op), ik->external_name(), name->as_C_string(), signature->as_C_string());
// Inline the method.
InvocationCounter* ic = m->invocation_counter();
ic->set_carry_flag();
for (int i = 0; i < argc; i++) {
ArgToken arg = argv[i];
TokenType tt = arg.token_type();
BasicType bt = arg.basic_type();
switch (tt) {
case tt_parameter:
case tt_temporary:
emit_load(bt, arg.index());
break;
case tt_constant:
emit_load_constant(arg);
break;
case tt_illegal:
// Sentinel.
assert(i == (argc - 1), "sentinel must be last entry");
break;
case tt_void:
default:
ShouldNotReachHere();
}
}
// Populate constant pool.
int name_index = cpool_symbol_put(name);
int signature_index = cpool_symbol_put(signature);
int name_and_type_index = cpool_name_and_type_put(name_index, signature_index);
int klass_index = cpool_klass_put(klass);
int methodref_index = cpool_methodref_put(klass_index, name_and_type_index);
// Generate invoke.
switch (op) {
case Bytecodes::_invokestatic:
case Bytecodes::_invokespecial:
case Bytecodes::_invokevirtual:
emit_bc(op, methodref_index);
break;
case Bytecodes::_invokeinterface:
Unimplemented();
break;
default:
ShouldNotReachHere();
}
// If tailcall, we have walked all the way to a direct method handle.
// Otherwise, make a recursive call to some helper routine.
BasicType rbt = m->result_type();
if (rbt == T_ARRAY) rbt = T_OBJECT;
ArgToken ret;
if (tailcall) {
if (rbt != _rtype) {
if (rbt == T_VOID) {
// push a zero of the right sort
ArgToken zero;
if (_rtype == T_OBJECT) {
zero = make_oop_constant(NULL, CHECK_(zero));
} else {
zero = make_prim_constant(_rtype, &zero_jvalue, CHECK_(zero));
}
emit_load_constant(zero);
} else if (_rtype == T_VOID) {
// We'll emit a _return with something on the stack.
// It's OK to ignore what's on the stack.
} else {
tty->print_cr("*** rbt=%d != rtype=%d", rbt, _rtype);
assert(false, "IMPLEMENT ME");
}
}
switch (_rtype) {
case T_BOOLEAN: case T_BYTE: case T_CHAR: case T_SHORT:
case T_INT: emit_bc(Bytecodes::_ireturn); break;
case T_LONG: emit_bc(Bytecodes::_lreturn); break;
case T_FLOAT: emit_bc(Bytecodes::_freturn); break;
case T_DOUBLE: emit_bc(Bytecodes::_dreturn); break;
case T_VOID: emit_bc(Bytecodes::_return); break;
case T_OBJECT:
if (_rklass.not_null() && _rklass() != SystemDictionary::Object_klass())
emit_bc(Bytecodes::_checkcast, cpool_klass_put(_rklass()));
emit_bc(Bytecodes::_areturn);
break;
default: ShouldNotReachHere();
}
ret = ArgToken(); // Dummy return value.
}
else {
stack_push(rbt); // The return value is already pushed onto the stack.
int index = new_local_index(rbt);
switch (rbt) {
case T_BOOLEAN: case T_BYTE: case T_CHAR: case T_SHORT:
case T_INT: case T_LONG: case T_FLOAT: case T_DOUBLE:
case T_OBJECT:
emit_store(rbt, index);
ret = ArgToken(tt_temporary, rbt, index);
break;
case T_VOID:
ret = ArgToken(tt_void);
break;
default:
ShouldNotReachHere();
}
}
return ret;
}
MethodHandleWalker::ArgToken
MethodHandleCompiler::make_fetch(BasicType type, klassOop tk, Bytecodes::Code op,
const MethodHandleWalker::ArgToken& base,
const MethodHandleWalker::ArgToken& offset,
TRAPS) {
Unimplemented();
return ArgToken();
}
int MethodHandleCompiler::cpool_primitive_put(BasicType bt, jvalue* con) {
jvalue con_copy;
assert(bt < T_OBJECT, "");
if (type2aelembytes(bt) < jintSize) {
// widen to int
con_copy = (*con);
con = &con_copy;
switch (bt) {
case T_BOOLEAN: con->i = (con->z ? 1 : 0); break;
case T_BYTE: con->i = con->b; break;
case T_CHAR: con->i = con->c; break;
case T_SHORT: con->i = con->s; break;
default: ShouldNotReachHere();
}
bt = T_INT;
}
// for (int i = 1, imax = _constants.length(); i < imax; i++) {
// ConstantValue* con = _constants.at(i);
// if (con != NULL && con->is_primitive() && con->_type == bt) {
// bool match = false;
// switch (type2size[bt]) {
// case 1: if (pcon->_value.i == con->i) match = true; break;
// case 2: if (pcon->_value.j == con->j) match = true; break;
// }
// if (match)
// return i;
// }
// }
ConstantValue* cv = new ConstantValue(bt, *con);
int index = _constants.append(cv);
// long and double entries take 2 slots, we add another empty entry.
if (type2size[bt] == 2)
(void) _constants.append(NULL);
return index;
}
constantPoolHandle MethodHandleCompiler::get_constant_pool(TRAPS) const {
constantPoolHandle nullHandle;
bool is_conc_safe = true;
constantPoolOop cpool_oop = oopFactory::new_constantPool(_constants.length(), is_conc_safe, CHECK_(nullHandle));
constantPoolHandle cpool(THREAD, cpool_oop);
// Fill the real constant pool skipping the zero element.
for (int i = 1; i < _constants.length(); i++) {
ConstantValue* cv = _constants.at(i);
switch (cv->tag()) {
case JVM_CONSTANT_Utf8: cpool->symbol_at_put( i, cv->symbol_oop() ); break;
case JVM_CONSTANT_Integer: cpool->int_at_put( i, cv->get_jint() ); break;
case JVM_CONSTANT_Float: cpool->float_at_put( i, cv->get_jfloat() ); break;
case JVM_CONSTANT_Long: cpool->long_at_put( i, cv->get_jlong() ); break;
case JVM_CONSTANT_Double: cpool->double_at_put( i, cv->get_jdouble() ); break;
case JVM_CONSTANT_Class: cpool->klass_at_put( i, cv->klass_oop() ); break;
case JVM_CONSTANT_Methodref: cpool->method_at_put( i, cv->first_index(), cv->second_index()); break;
case JVM_CONSTANT_NameAndType: cpool->name_and_type_at_put(i, cv->first_index(), cv->second_index()); break;
case JVM_CONSTANT_Object: cpool->object_at_put( i, cv->object_oop() ); break;
default: ShouldNotReachHere();
}
switch (cv->tag()) {
case JVM_CONSTANT_Long:
case JVM_CONSTANT_Double:
i++; // Skip empty entry.
assert(_constants.at(i) == NULL, "empty entry");
break;
}
}
// Set the constant pool holder to the target method's class.
cpool->set_pool_holder(_target_klass());
return cpool;
}
methodHandle MethodHandleCompiler::get_method_oop(TRAPS) const {
methodHandle nullHandle;
// Create a method that holds the generated bytecode. invokedynamic
// has no receiver, normal MH calls do.
int flags_bits;
if (for_invokedynamic())
flags_bits = (/*JVM_MH_INVOKE_BITS |*/ JVM_ACC_PUBLIC | JVM_ACC_FINAL | JVM_ACC_SYNTHETIC | JVM_ACC_STATIC);
else
flags_bits = (/*JVM_MH_INVOKE_BITS |*/ JVM_ACC_PUBLIC | JVM_ACC_FINAL | JVM_ACC_SYNTHETIC);
bool is_conc_safe = true;
methodOop m_oop = oopFactory::new_method(bytecode_length(),
accessFlags_from(flags_bits),
0, 0, 0, is_conc_safe, CHECK_(nullHandle));
methodHandle m(THREAD, m_oop);
m_oop = NULL; // oop not GC safe
constantPoolHandle cpool = get_constant_pool(CHECK_(nullHandle));
m->set_constants(cpool());
m->set_name_index(_name_index);
m->set_signature_index(_signature_index);
m->set_code((address) bytecode());
m->set_max_stack(_max_stack);
m->set_max_locals(max_locals());
m->set_size_of_parameters(_num_params);
typeArrayHandle exception_handlers(THREAD, Universe::the_empty_int_array());
m->set_exception_table(exception_handlers());
// Set the carry bit of the invocation counter to force inlining of
// the adapter.
InvocationCounter* ic = m->invocation_counter();
ic->set_carry_flag();
// Rewrite the method and set up the constant pool cache.
objArrayOop m_array = oopFactory::new_system_objArray(1, CHECK_(nullHandle));
objArrayHandle methods(THREAD, m_array);
methods->obj_at_put(0, m());
Rewriter::rewrite(_target_klass(), cpool, methods, CHECK_(nullHandle)); // Use fake class.
#ifndef PRODUCT
if (TraceMethodHandles) {
m->print();
m->print_codes();
}
#endif //PRODUCT
assert(m->is_method_handle_adapter(), "must be recognized as an adapter");
return m;
}
#ifndef PRODUCT
#if 0
// MH printer for debugging.
class MethodHandlePrinter : public MethodHandleWalker {
private:
outputStream* _out;
bool _verbose;
int _temp_num;
stringStream _strbuf;
const char* strbuf() {
const char* s = _strbuf.as_string();
_strbuf.reset();
return s;
}
ArgToken token(const char* str) {
return (ArgToken) str;
}
void start_params() {
_out->print("(");
}
void end_params() {
if (_verbose) _out->print("\n");
_out->print(") => {");
}
void put_type_name(BasicType type, klassOop tk, outputStream* s) {
const char* kname = NULL;
if (tk != NULL)
kname = Klass::cast(tk)->external_name();
s->print("%s", (kname != NULL) ? kname : type2name(type));
}
ArgToken maybe_make_temp(const char* statement_op, BasicType type, const char* temp_name) {
const char* value = strbuf();
if (!_verbose) return token(value);
// make an explicit binding for each separate value
_strbuf.print("%s%d", temp_name, ++_temp_num);
const char* temp = strbuf();
_out->print("\n %s %s %s = %s;", statement_op, type2name(type), temp, value);
return token(temp);
}
public:
MethodHandlePrinter(Handle root, bool verbose, outputStream* out, TRAPS)
: MethodHandleWalker(root, THREAD),
_out(out),
_verbose(verbose),
_temp_num(0)
{
start_params();
}
virtual ArgToken make_parameter(BasicType type, klassOop tk, int argnum, TRAPS) {
if (argnum < 0) {
end_params();
return NULL;
}
if (argnum == 0) {
_out->print(_verbose ? "\n " : "");
} else {
_out->print(_verbose ? ",\n " : ", ");
}
if (argnum >= _temp_num)
_temp_num = argnum;
// generate an argument name
_strbuf.print("a%d", argnum);
const char* arg = strbuf();
put_type_name(type, tk, _out);
_out->print(" %s", arg);
return token(arg);
}
virtual ArgToken make_oop_constant(oop con, TRAPS) {
if (con == NULL)
_strbuf.print("null");
else
con->print_value_on(&_strbuf);
if (_strbuf.size() == 0) { // yuck
_strbuf.print("(a ");
put_type_name(T_OBJECT, con->klass(), &_strbuf);
_strbuf.print(")");
}
return maybe_make_temp("constant", T_OBJECT, "k");
}
virtual ArgToken make_prim_constant(BasicType type, jvalue* con, TRAPS) {
java_lang_boxing_object::print(type, con, &_strbuf);
return maybe_make_temp("constant", type, "k");
}
virtual ArgToken make_conversion(BasicType type, klassOop tk, Bytecodes::Code op, ArgToken src, TRAPS) {
_strbuf.print("%s(%s", Bytecodes::name(op), (const char*)src);
if (tk != NULL) {
_strbuf.print(", ");
put_type_name(type, tk, &_strbuf);
}
_strbuf.print(")");
return maybe_make_temp("convert", type, "v");
}
virtual ArgToken make_fetch(BasicType type, klassOop tk, Bytecodes::Code op, ArgToken base, ArgToken offset, TRAPS) {
_strbuf.print("%s(%s, %s", Bytecodes::name(op), (const char*)base, (const char*)offset);
if (tk != NULL) {
_strbuf.print(", ");
put_type_name(type, tk, &_strbuf);
}
_strbuf.print(")");
return maybe_make_temp("fetch", type, "x");
}
virtual ArgToken make_invoke(methodOop m, vmIntrinsics::ID iid,
Bytecodes::Code op, bool tailcall,
int argc, ArgToken* argv, TRAPS) {
symbolOop name, sig;
if (m != NULL) {
name = m->name();
sig = m->signature();
} else {
name = vmSymbols::symbol_at(vmIntrinsics::name_for(iid));
sig = vmSymbols::symbol_at(vmIntrinsics::signature_for(iid));
}
_strbuf.print("%s %s%s(", Bytecodes::name(op), name->as_C_string(), sig->as_C_string());
for (int i = 0; i < argc; i++) {
_strbuf.print("%s%s", (i > 0 ? ", " : ""), (const char*)argv[i]);
}
_strbuf.print(")");
if (!tailcall) {
BasicType rt = char2type(sig->byte_at(sig->utf8_length()-1));
if (rt == T_ILLEGAL) rt = T_OBJECT; // ';' at the end of '(...)L...;'
return maybe_make_temp("invoke", rt, "x");
} else {
const char* ret = strbuf();
_out->print(_verbose ? "\n return " : " ");
_out->print("%s", ret);
_out->print(_verbose ? "\n}\n" : " }");
}
return ArgToken();
}
virtual void set_method_handle(oop mh) {
if (WizardMode && Verbose) {
tty->print("\n--- next target: ");
mh->print();
}
}
static void print(Handle root, bool verbose, outputStream* out, TRAPS) {
ResourceMark rm;
MethodHandlePrinter printer(root, verbose, out, CHECK);
printer.walk(CHECK);
out->print("\n");
}
static void print(Handle root, bool verbose = Verbose, outputStream* out = tty) {
EXCEPTION_MARK;
ResourceMark rm;
MethodHandlePrinter printer(root, verbose, out, THREAD);
if (!HAS_PENDING_EXCEPTION)
printer.walk(THREAD);
if (HAS_PENDING_EXCEPTION) {
oop ex = PENDING_EXCEPTION;
CLEAR_PENDING_EXCEPTION;
out->print("\n*** ");
if (ex != Universe::virtual_machine_error_instance())
ex->print_on(out);
else
out->print("lose: %s", printer.lose_message());
out->print("\n}\n");
}
out->print("\n");
}
};
#endif // 0
extern "C"
void print_method_handle(oop mh) {
if (!mh->is_oop()) {
tty->print_cr("*** not a method handle: "INTPTR_FORMAT, (intptr_t)mh);
} else if (java_dyn_MethodHandle::is_instance(mh)) {
//MethodHandlePrinter::print(mh);
} else {
tty->print("*** not a method handle: ");
mh->print();
}
}
#endif // PRODUCT