1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/prims/methodHandles.hpp Wed Apr 08 10:56:49 2009 -0700
1.3 @@ -0,0 +1,435 @@
1.4 +/*
1.5 + * Copyright 2008-2009 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + *
1.26 + */
1.27 +
1.28 +class MacroAssembler;
1.29 +class Label;
1.30 +class MethodHandleEntry;
1.31 +
1.32 +class MethodHandles: AllStatic {
1.33 + // JVM support for MethodHandle, MethodType, and related types
1.34 + // in java.dyn and java.dyn.hotspot.
1.35 + // See also javaClasses for layouts java_dyn_Method{Handle,Type,Type::Form}.
1.36 + public:
1.37 + enum EntryKind {
1.38 + _check_mtype, // how a caller calls a MH
1.39 + _wrong_method_type, // what happens when there is a type mismatch
1.40 + _invokestatic_mh, // how a MH emulates invokestatic
1.41 + _invokespecial_mh, // ditto for the other invokes...
1.42 + _invokevirtual_mh,
1.43 + _invokeinterface_mh,
1.44 + _bound_ref_mh, // reference argument is bound
1.45 + _bound_int_mh, // int argument is bound (via an Integer or Float)
1.46 + _bound_long_mh, // long argument is bound (via a Long or Double)
1.47 + _bound_ref_direct_mh, // same as above, with direct linkage to methodOop
1.48 + _bound_int_direct_mh,
1.49 + _bound_long_direct_mh,
1.50 +
1.51 + _adapter_mh_first, // adapter sequence goes here...
1.52 + _adapter_retype_only = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_RETYPE_ONLY,
1.53 + _adapter_check_cast = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_CHECK_CAST,
1.54 + _adapter_prim_to_prim = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_PRIM_TO_PRIM,
1.55 + _adapter_ref_to_prim = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_REF_TO_PRIM,
1.56 + _adapter_prim_to_ref = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_PRIM_TO_REF,
1.57 + _adapter_swap_args = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_SWAP_ARGS,
1.58 + _adapter_rot_args = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_ROT_ARGS,
1.59 + _adapter_dup_args = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_DUP_ARGS,
1.60 + _adapter_drop_args = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_DROP_ARGS,
1.61 + _adapter_collect_args = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_COLLECT_ARGS,
1.62 + _adapter_spread_args = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_SPREAD_ARGS,
1.63 + _adapter_flyby = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_FLYBY,
1.64 + _adapter_ricochet = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_RICOCHET,
1.65 + _adapter_mh_last = _adapter_mh_first + sun_dyn_AdapterMethodHandle::CONV_OP_LIMIT - 1,
1.66 +
1.67 + // Optimized adapter types
1.68 +
1.69 + // argument list reordering
1.70 + _adapter_opt_swap_1,
1.71 + _adapter_opt_swap_2,
1.72 + _adapter_opt_rot_1_up,
1.73 + _adapter_opt_rot_1_down,
1.74 + _adapter_opt_rot_2_up,
1.75 + _adapter_opt_rot_2_down,
1.76 + // primitive single to single:
1.77 + _adapter_opt_i2i, // i2c, i2z, i2b, i2s
1.78 + // primitive double to single:
1.79 + _adapter_opt_l2i,
1.80 + _adapter_opt_d2f,
1.81 + // primitive single to double:
1.82 + _adapter_opt_i2l,
1.83 + _adapter_opt_f2d,
1.84 + // conversion between floating point and integer type is handled by Java
1.85 +
1.86 + // reference to primitive:
1.87 + _adapter_opt_unboxi,
1.88 + _adapter_opt_unboxl,
1.89 +
1.90 + // spreading (array length cases 0, 1, >=2)
1.91 + _adapter_opt_spread_0,
1.92 + _adapter_opt_spread_1,
1.93 + _adapter_opt_spread_more,
1.94 +
1.95 + _EK_LIMIT,
1.96 + _EK_FIRST = 0
1.97 + };
1.98 +
1.99 + public:
1.100 + static bool enabled() { return _enabled; }
1.101 + static void set_enabled(bool z);
1.102 +
1.103 + private:
1.104 + enum { // import sun_dyn_AdapterMethodHandle::CONV_OP_*
1.105 + CONV_OP_LIMIT = sun_dyn_AdapterMethodHandle::CONV_OP_LIMIT,
1.106 + CONV_OP_MASK = sun_dyn_AdapterMethodHandle::CONV_OP_MASK,
1.107 + CONV_VMINFO_MASK = sun_dyn_AdapterMethodHandle::CONV_VMINFO_MASK,
1.108 + CONV_VMINFO_SHIFT = sun_dyn_AdapterMethodHandle::CONV_VMINFO_SHIFT,
1.109 + CONV_OP_SHIFT = sun_dyn_AdapterMethodHandle::CONV_OP_SHIFT,
1.110 + CONV_DEST_TYPE_SHIFT = sun_dyn_AdapterMethodHandle::CONV_DEST_TYPE_SHIFT,
1.111 + CONV_SRC_TYPE_SHIFT = sun_dyn_AdapterMethodHandle::CONV_SRC_TYPE_SHIFT,
1.112 + CONV_STACK_MOVE_SHIFT = sun_dyn_AdapterMethodHandle::CONV_STACK_MOVE_SHIFT,
1.113 + CONV_STACK_MOVE_MASK = sun_dyn_AdapterMethodHandle::CONV_STACK_MOVE_MASK
1.114 + };
1.115 +
1.116 + static bool _enabled;
1.117 + static MethodHandleEntry* _entries[_EK_LIMIT];
1.118 + static const char* _entry_names[_EK_LIMIT+1];
1.119 + static bool ek_valid(EntryKind ek) { return (uint)ek < (uint)_EK_LIMIT; }
1.120 + static bool conv_op_valid(int op) { return (uint)op < (uint)CONV_OP_LIMIT; }
1.121 +
1.122 + public:
1.123 + static bool have_entry(EntryKind ek) { return ek_valid(ek) && _entries[ek] != NULL; }
1.124 + static MethodHandleEntry* entry(EntryKind ek) { assert(ek_valid(ek), "initialized");
1.125 + return _entries[ek]; }
1.126 + static const char* entry_name(EntryKind ek) { assert(ek_valid(ek), "oob");
1.127 + return _entry_names[ek]; }
1.128 + static EntryKind adapter_entry_kind(int op) { assert(conv_op_valid(op), "oob");
1.129 + return EntryKind(_adapter_mh_first + op); }
1.130 +
1.131 + static void init_entry(EntryKind ek, MethodHandleEntry* me) {
1.132 + assert(ek_valid(ek), "oob");
1.133 + assert(_entries[ek] == NULL, "no double initialization");
1.134 + _entries[ek] = me;
1.135 + }
1.136 +
1.137 + static jint adapter_conversion(int conv_op, BasicType src, BasicType dest,
1.138 + int stack_move = 0, int vminfo = 0) {
1.139 + assert(conv_op_valid(conv_op), "oob");
1.140 + jint conv = ((conv_op << CONV_OP_SHIFT)
1.141 + | (src << CONV_SRC_TYPE_SHIFT)
1.142 + | (dest << CONV_DEST_TYPE_SHIFT)
1.143 + | (stack_move << CONV_STACK_MOVE_SHIFT)
1.144 + | (vminfo << CONV_VMINFO_SHIFT)
1.145 + );
1.146 + assert(adapter_conversion_op(conv) == conv_op, "decode conv_op");
1.147 + assert(adapter_conversion_src_type(conv) == src, "decode src");
1.148 + assert(adapter_conversion_dest_type(conv) == dest, "decode dest");
1.149 + assert(adapter_conversion_stack_move(conv) == stack_move, "decode stack_move");
1.150 + assert(adapter_conversion_vminfo(conv) == vminfo, "decode vminfo");
1.151 + return conv;
1.152 + }
1.153 + static int adapter_conversion_op(jint conv) {
1.154 + return ((conv >> CONV_OP_SHIFT) & 0xF);
1.155 + }
1.156 + static BasicType adapter_conversion_src_type(jint conv) {
1.157 + return (BasicType)((conv >> CONV_SRC_TYPE_SHIFT) & 0xF);
1.158 + }
1.159 + static BasicType adapter_conversion_dest_type(jint conv) {
1.160 + return (BasicType)((conv >> CONV_DEST_TYPE_SHIFT) & 0xF);
1.161 + }
1.162 + static int adapter_conversion_stack_move(jint conv) {
1.163 + return (conv >> CONV_STACK_MOVE_SHIFT);
1.164 + }
1.165 + static int adapter_conversion_vminfo(jint conv) {
1.166 + return (conv >> CONV_VMINFO_SHIFT) & CONV_VMINFO_MASK;
1.167 + }
1.168 +
1.169 + // Offset in words that the interpreter stack pointer moves when an argument is pushed.
1.170 + // The stack_move value must always be a multiple of this.
1.171 + static int stack_move_unit() {
1.172 + return frame::interpreter_frame_expression_stack_direction() * Interpreter::stackElementWords();
1.173 + }
1.174 +
1.175 + enum { CONV_VMINFO_SIGN_FLAG = 0x80 };
1.176 + static int adapter_subword_vminfo(BasicType dest) {
1.177 + if (dest == T_BOOLEAN) return (BitsPerInt - 1);
1.178 + if (dest == T_CHAR) return (BitsPerInt - 16);
1.179 + if (dest == T_BYTE) return (BitsPerInt - 8) | CONV_VMINFO_SIGN_FLAG;
1.180 + if (dest == T_SHORT) return (BitsPerInt - 16) | CONV_VMINFO_SIGN_FLAG;
1.181 + return 0; // case T_INT
1.182 + }
1.183 + // Here is the transformation the i2i adapter must perform:
1.184 + static int truncate_subword_from_vminfo(jint value, int vminfo) {
1.185 + jint tem = value << vminfo;
1.186 + if ((vminfo & CONV_VMINFO_SIGN_FLAG) != 0) {
1.187 + return (jint)tem >> vminfo;
1.188 + } else {
1.189 + return (juint)tem >> vminfo;
1.190 + }
1.191 + }
1.192 +
1.193 + static inline address from_compiled_entry(EntryKind ek);
1.194 + static inline address from_interpreted_entry(EntryKind ek);
1.195 +
1.196 + // helpers for decode_method.
1.197 + static methodOop decode_methodOop(methodOop m, int& decode_flags_result);
1.198 + static methodOop decode_vmtarget(oop vmtarget, int vmindex, oop mtype, klassOop& receiver_limit_result, int& decode_flags_result);
1.199 + static methodOop decode_MemberName(oop mname, klassOop& receiver_limit_result, int& decode_flags_result);
1.200 + static methodOop decode_MethodHandle(oop mh, klassOop& receiver_limit_result, int& decode_flags_result);
1.201 + static methodOop decode_DirectMethodHandle(oop mh, klassOop& receiver_limit_result, int& decode_flags_result);
1.202 + static methodOop decode_BoundMethodHandle(oop mh, klassOop& receiver_limit_result, int& decode_flags_result);
1.203 + static methodOop decode_AdapterMethodHandle(oop mh, klassOop& receiver_limit_result, int& decode_flags_result);
1.204 +
1.205 + // Find out how many stack slots an mh pushes or pops.
1.206 + // The result is *not* reported as a multiple of stack_move_unit();
1.207 + // It is a signed net number of pushes (a difference in vmslots).
1.208 + // To compare with a stack_move value, first multiply by stack_move_unit().
1.209 + static int decode_MethodHandle_stack_pushes(oop mh);
1.210 +
1.211 + public:
1.212 + // working with member names
1.213 + static void resolve_MemberName(Handle mname, TRAPS); // compute vmtarget/vmindex from name/type
1.214 + static void expand_MemberName(Handle mname, int suppress, TRAPS); // expand defc/name/type if missing
1.215 + static void init_MemberName(oop mname_oop, oop target); // compute vmtarget/vmindex from target
1.216 + static void init_MemberName(oop mname_oop, methodOop m, bool do_dispatch);
1.217 + static void init_MemberName(oop mname_oop, klassOop field_holder, AccessFlags mods, int offset);
1.218 + static int find_MemberNames(klassOop k, symbolOop name, symbolOop sig,
1.219 + int mflags, klassOop caller,
1.220 + int skip, objArrayOop results);
1.221 + // bit values for suppress argument to expand_MemberName:
1.222 + enum { _suppress_defc = 1, _suppress_name = 2, _suppress_type = 4 };
1.223 +
1.224 + // called from InterpreterGenerator and StubGenerator
1.225 + static address generate_method_handle_interpreter_entry(MacroAssembler* _masm);
1.226 + static void generate_method_handle_stub(MacroAssembler* _masm, EntryKind ek);
1.227 +
1.228 + // argument list parsing
1.229 + static int argument_slot(oop method_type, int arg);
1.230 + static int argument_slot_count(oop method_type) { return argument_slot(method_type, -1); }
1.231 + static int argument_slot_to_argnum(oop method_type, int argslot);
1.232 +
1.233 + // Runtime support
1.234 + enum { // bit-encoded flags from decode_method or decode_vmref
1.235 + _dmf_has_receiver = 0x01, // target method has leading reference argument
1.236 + _dmf_does_dispatch = 0x02, // method handle performs virtual or interface dispatch
1.237 + _dmf_from_interface = 0x04, // peforms interface dispatch
1.238 + _DMF_DIRECT_MASK = (_dmf_from_interface*2 - _dmf_has_receiver),
1.239 + _dmf_binds_method = 0x08,
1.240 + _dmf_binds_argument = 0x10,
1.241 + _DMF_BOUND_MASK = (_dmf_binds_argument*2 - _dmf_binds_method),
1.242 + _dmf_adapter_lsb = 0x20,
1.243 + _DMF_ADAPTER_MASK = (_dmf_adapter_lsb << CONV_OP_LIMIT) - _dmf_adapter_lsb
1.244 + };
1.245 + static methodOop decode_method(oop x, klassOop& receiver_limit_result, int& decode_flags_result);
1.246 + enum {
1.247 + // format of query to getConstant:
1.248 + GC_JVM_PUSH_LIMIT = 0,
1.249 + GC_JVM_STACK_MOVE_LIMIT = 1,
1.250 +
1.251 + // format of result from getTarget / encode_target:
1.252 + ETF_HANDLE_OR_METHOD_NAME = 0, // all available data (immediate MH or method)
1.253 + ETF_DIRECT_HANDLE = 1, // ultimate method handle (will be a DMH, may be self)
1.254 + ETF_METHOD_NAME = 2, // ultimate method as MemberName
1.255 + ETF_REFLECT_METHOD = 3 // ultimate method as java.lang.reflect object (sans refClass)
1.256 + };
1.257 + static int get_named_constant(int which, Handle name_box, TRAPS);
1.258 + static oop encode_target(Handle mh, int format, TRAPS); // report vmtarget (to Java code)
1.259 + static bool class_cast_needed(klassOop src, klassOop dst);
1.260 +
1.261 + private:
1.262 + // These checkers operate on a pair of whole MethodTypes:
1.263 + static const char* check_method_type_change(oop src_mtype, int src_beg, int src_end,
1.264 + int insert_argnum, oop insert_type,
1.265 + int change_argnum, oop change_type,
1.266 + int delete_argnum,
1.267 + oop dst_mtype, int dst_beg, int dst_end);
1.268 + static const char* check_method_type_insertion(oop src_mtype,
1.269 + int insert_argnum, oop insert_type,
1.270 + oop dst_mtype) {
1.271 + oop no_ref = NULL;
1.272 + return check_method_type_change(src_mtype, 0, -1,
1.273 + insert_argnum, insert_type,
1.274 + -1, no_ref, -1, dst_mtype, 0, -1);
1.275 + }
1.276 + static const char* check_method_type_conversion(oop src_mtype,
1.277 + int change_argnum, oop change_type,
1.278 + oop dst_mtype) {
1.279 + oop no_ref = NULL;
1.280 + return check_method_type_change(src_mtype, 0, -1, -1, no_ref,
1.281 + change_argnum, change_type,
1.282 + -1, dst_mtype, 0, -1);
1.283 + }
1.284 + static const char* check_method_type_passthrough(oop src_mtype, oop dst_mtype) {
1.285 + oop no_ref = NULL;
1.286 + return check_method_type_change(src_mtype, 0, -1,
1.287 + -1, no_ref, -1, no_ref, -1,
1.288 + dst_mtype, 0, -1);
1.289 + }
1.290 +
1.291 + // These checkers operate on pairs of argument or return types:
1.292 + static const char* check_argument_type_change(BasicType src_type, klassOop src_klass,
1.293 + BasicType dst_type, klassOop dst_klass,
1.294 + int argnum);
1.295 +
1.296 + static const char* check_argument_type_change(oop src_type, oop dst_type,
1.297 + int argnum) {
1.298 + klassOop src_klass = NULL, dst_klass = NULL;
1.299 + BasicType src_bt = java_lang_Class::as_BasicType(src_type, &src_klass);
1.300 + BasicType dst_bt = java_lang_Class::as_BasicType(dst_type, &dst_klass);
1.301 + return check_argument_type_change(src_bt, src_klass,
1.302 + dst_bt, dst_klass, argnum);
1.303 + }
1.304 +
1.305 + static const char* check_return_type_change(oop src_type, oop dst_type) {
1.306 + return check_argument_type_change(src_type, dst_type, -1);
1.307 + }
1.308 +
1.309 + static const char* check_return_type_change(BasicType src_type, klassOop src_klass,
1.310 + BasicType dst_type, klassOop dst_klass) {
1.311 + return check_argument_type_change(src_type, src_klass, dst_type, dst_klass, -1);
1.312 + }
1.313 +
1.314 + static const char* check_method_receiver(methodOop m, klassOop passed_recv_type);
1.315 +
1.316 + // These verifiers can block, and will throw an error if the checking fails:
1.317 + static void verify_vmslots(Handle mh, TRAPS);
1.318 + static void verify_vmargslot(Handle mh, int argnum, int argslot, TRAPS);
1.319 +
1.320 + static void verify_method_type(methodHandle m, Handle mtype,
1.321 + bool has_bound_oop,
1.322 + KlassHandle bound_oop_type,
1.323 + TRAPS);
1.324 +
1.325 + static void verify_method_signature(methodHandle m, Handle mtype,
1.326 + int first_ptype_pos,
1.327 + KlassHandle insert_ptype, TRAPS);
1.328 +
1.329 + static void verify_DirectMethodHandle(Handle mh, methodHandle m, TRAPS);
1.330 + static void verify_BoundMethodHandle(Handle mh, Handle target, int argnum,
1.331 + bool direct_to_method, TRAPS);
1.332 + static void verify_BoundMethodHandle_with_receiver(Handle mh, methodHandle m, TRAPS);
1.333 + static void verify_AdapterMethodHandle(Handle mh, int argnum, TRAPS);
1.334 +
1.335 + public:
1.336 +
1.337 + // Fill in the fields of a DirectMethodHandle mh. (MH.type must be pre-filled.)
1.338 + static void init_DirectMethodHandle(Handle mh, methodHandle method, bool do_dispatch, TRAPS);
1.339 +
1.340 + // Fill in the fields of a BoundMethodHandle mh. (MH.type, BMH.argument must be pre-filled.)
1.341 + static void init_BoundMethodHandle(Handle mh, Handle target, int argnum, TRAPS);
1.342 + static void init_BoundMethodHandle_with_receiver(Handle mh,
1.343 + methodHandle original_m,
1.344 + KlassHandle receiver_limit,
1.345 + int decode_flags,
1.346 + TRAPS);
1.347 +
1.348 + // Fill in the fields of an AdapterMethodHandle mh. (MH.type must be pre-filled.)
1.349 + static void init_AdapterMethodHandle(Handle mh, Handle target, int argnum, TRAPS);
1.350 +
1.351 +#ifdef ASSERT
1.352 + static bool spot_check_entry_names();
1.353 +#endif
1.354 +
1.355 + private:
1.356 + static methodHandle dispatch_decoded_method(methodHandle m,
1.357 + KlassHandle receiver_limit,
1.358 + int decode_flags,
1.359 + KlassHandle receiver_klass,
1.360 + TRAPS);
1.361 +
1.362 + static bool same_basic_type_for_arguments(BasicType src, BasicType dst,
1.363 + bool for_return = false);
1.364 + static bool same_basic_type_for_returns(BasicType src, BasicType dst) {
1.365 + return same_basic_type_for_arguments(src, dst, true);
1.366 + }
1.367 +
1.368 + enum { // arg_mask values
1.369 + _INSERT_NO_MASK = -1,
1.370 + _INSERT_REF_MASK = 0,
1.371 + _INSERT_INT_MASK = 1,
1.372 + _INSERT_LONG_MASK = 3
1.373 + };
1.374 + static void insert_arg_slots(MacroAssembler* _masm,
1.375 + RegisterOrConstant arg_slots,
1.376 + int arg_mask,
1.377 + Register rax_argslot,
1.378 + Register rbx_temp, Register rdx_temp);
1.379 +
1.380 + static void remove_arg_slots(MacroAssembler* _masm,
1.381 + RegisterOrConstant arg_slots,
1.382 + Register rax_argslot,
1.383 + Register rbx_temp, Register rdx_temp);
1.384 +};
1.385 +
1.386 +
1.387 +// Access methods for the "entry" field of a java.dyn.MethodHandle.
1.388 +// The field is primarily a jump target for compiled calls.
1.389 +// However, we squirrel away some nice pointers for other uses,
1.390 +// just before the jump target.
1.391 +// Aspects of a method handle entry:
1.392 +// - from_compiled_entry - stub used when compiled code calls the MH
1.393 +// - from_interpreted_entry - stub used when the interpreter calls the MH
1.394 +// - type_checking_entry - stub for runtime casting between MHForm siblings (NYI)
1.395 +class MethodHandleEntry {
1.396 + public:
1.397 + class Data {
1.398 + friend class MethodHandleEntry;
1.399 + size_t _total_size; // size including Data and code stub
1.400 + MethodHandleEntry* _type_checking_entry;
1.401 + address _from_interpreted_entry;
1.402 + MethodHandleEntry* method_entry() { return (MethodHandleEntry*)(this + 1); }
1.403 + };
1.404 +
1.405 + Data* data() { return (Data*)this - 1; }
1.406 +
1.407 + address start_address() { return (address) data(); }
1.408 + address end_address() { return start_address() + data()->_total_size; }
1.409 +
1.410 + address from_compiled_entry() { return (address) this; }
1.411 +
1.412 + address from_interpreted_entry() { return data()->_from_interpreted_entry; }
1.413 + void set_from_interpreted_entry(address e) { data()->_from_interpreted_entry = e; }
1.414 +
1.415 + MethodHandleEntry* type_checking_entry() { return data()->_type_checking_entry; }
1.416 + void set_type_checking_entry(MethodHandleEntry* e) { data()->_type_checking_entry = e; }
1.417 +
1.418 + void set_end_address(address end_addr) {
1.419 + size_t total_size = end_addr - start_address();
1.420 + assert(total_size > 0 && total_size < 0x1000, "reasonable end address");
1.421 + data()->_total_size = total_size;
1.422 + }
1.423 +
1.424 + // Compiler support:
1.425 + static int from_interpreted_entry_offset_in_bytes() {
1.426 + return (int)( offset_of(Data, _from_interpreted_entry) - sizeof(Data) );
1.427 + }
1.428 + static int type_checking_entry_offset_in_bytes() {
1.429 + return (int)( offset_of(Data, _from_interpreted_entry) - sizeof(Data) );
1.430 + }
1.431 +
1.432 + static address start_compiled_entry(MacroAssembler* _masm,
1.433 + address interpreted_entry = NULL);
1.434 + static MethodHandleEntry* finish_compiled_entry(MacroAssembler* masm, address start_addr);
1.435 +};
1.436 +
1.437 +address MethodHandles::from_compiled_entry(EntryKind ek) { return entry(ek)->from_compiled_entry(); }
1.438 +address MethodHandles::from_interpreted_entry(EntryKind ek) { return entry(ek)->from_interpreted_entry(); }
