Mercurial > hg > graal-compiler
annotate src/share/vm/prims/methodHandles.hpp @ 1972:f95d63e2154a
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
| author | stefank |
|---|---|
| date | Tue, 23 Nov 2010 13:22:55 -0800 |
| parents | 5beba6174298 |
| children | 8d0b933dda2d |
| rev | line source |
|---|---|
| 710 | 1 /* |
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2 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. |
| 710 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 710 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_PRIMS_METHODHANDLES_HPP |
| 26 #define SHARE_VM_PRIMS_METHODHANDLES_HPP | |
| 27 | |
| 28 #include "classfile/javaClasses.hpp" | |
| 29 #include "classfile/vmSymbols.hpp" | |
| 30 #include "runtime/frame.inline.hpp" | |
| 31 #include "runtime/globals.hpp" | |
| 32 #include "runtime/interfaceSupport.hpp" | |
| 33 | |
| 710 | 34 class MacroAssembler; |
| 35 class Label; | |
| 36 class MethodHandleEntry; | |
| 37 | |
| 38 class MethodHandles: AllStatic { | |
| 39 // JVM support for MethodHandle, MethodType, and related types | |
| 40 // in java.dyn and java.dyn.hotspot. | |
| 41 // See also javaClasses for layouts java_dyn_Method{Handle,Type,Type::Form}. | |
| 42 public: | |
| 43 enum EntryKind { | |
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44 _raise_exception, // stub for error generation from other stubs |
| 710 | 45 _invokestatic_mh, // how a MH emulates invokestatic |
| 46 _invokespecial_mh, // ditto for the other invokes... | |
| 47 _invokevirtual_mh, | |
| 48 _invokeinterface_mh, | |
| 49 _bound_ref_mh, // reference argument is bound | |
| 50 _bound_int_mh, // int argument is bound (via an Integer or Float) | |
| 51 _bound_long_mh, // long argument is bound (via a Long or Double) | |
| 52 _bound_ref_direct_mh, // same as above, with direct linkage to methodOop | |
| 53 _bound_int_direct_mh, | |
| 54 _bound_long_direct_mh, | |
| 55 | |
| 56 _adapter_mh_first, // adapter sequence goes here... | |
| 57 _adapter_retype_only = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_RETYPE_ONLY, | |
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58 _adapter_retype_raw = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW, |
| 710 | 59 _adapter_check_cast = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_CHECK_CAST, |
| 60 _adapter_prim_to_prim = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_PRIM_TO_PRIM, | |
| 61 _adapter_ref_to_prim = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_REF_TO_PRIM, | |
| 62 _adapter_prim_to_ref = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_PRIM_TO_REF, | |
| 63 _adapter_swap_args = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_SWAP_ARGS, | |
| 64 _adapter_rot_args = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_ROT_ARGS, | |
| 65 _adapter_dup_args = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_DUP_ARGS, | |
| 66 _adapter_drop_args = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_DROP_ARGS, | |
| 67 _adapter_collect_args = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_COLLECT_ARGS, | |
| 68 _adapter_spread_args = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_SPREAD_ARGS, | |
| 69 _adapter_flyby = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_FLYBY, | |
| 70 _adapter_ricochet = _adapter_mh_first + sun_dyn_AdapterMethodHandle::OP_RICOCHET, | |
| 71 _adapter_mh_last = _adapter_mh_first + sun_dyn_AdapterMethodHandle::CONV_OP_LIMIT - 1, | |
| 72 | |
| 73 // Optimized adapter types | |
| 74 | |
| 75 // argument list reordering | |
| 76 _adapter_opt_swap_1, | |
| 77 _adapter_opt_swap_2, | |
| 78 _adapter_opt_rot_1_up, | |
| 79 _adapter_opt_rot_1_down, | |
| 80 _adapter_opt_rot_2_up, | |
| 81 _adapter_opt_rot_2_down, | |
| 82 // primitive single to single: | |
| 83 _adapter_opt_i2i, // i2c, i2z, i2b, i2s | |
| 84 // primitive double to single: | |
| 85 _adapter_opt_l2i, | |
| 86 _adapter_opt_d2f, | |
| 87 // primitive single to double: | |
| 88 _adapter_opt_i2l, | |
| 89 _adapter_opt_f2d, | |
| 90 // conversion between floating point and integer type is handled by Java | |
| 91 | |
| 92 // reference to primitive: | |
| 93 _adapter_opt_unboxi, | |
| 94 _adapter_opt_unboxl, | |
| 95 | |
| 96 // spreading (array length cases 0, 1, >=2) | |
| 97 _adapter_opt_spread_0, | |
| 98 _adapter_opt_spread_1, | |
| 99 _adapter_opt_spread_more, | |
| 100 | |
| 101 _EK_LIMIT, | |
| 102 _EK_FIRST = 0 | |
| 103 }; | |
| 104 | |
| 105 public: | |
| 106 static bool enabled() { return _enabled; } | |
| 107 static void set_enabled(bool z); | |
| 108 | |
| 109 private: | |
| 110 enum { // import sun_dyn_AdapterMethodHandle::CONV_OP_* | |
| 111 CONV_OP_LIMIT = sun_dyn_AdapterMethodHandle::CONV_OP_LIMIT, | |
| 112 CONV_OP_MASK = sun_dyn_AdapterMethodHandle::CONV_OP_MASK, | |
| 113 CONV_VMINFO_MASK = sun_dyn_AdapterMethodHandle::CONV_VMINFO_MASK, | |
| 114 CONV_VMINFO_SHIFT = sun_dyn_AdapterMethodHandle::CONV_VMINFO_SHIFT, | |
| 115 CONV_OP_SHIFT = sun_dyn_AdapterMethodHandle::CONV_OP_SHIFT, | |
| 116 CONV_DEST_TYPE_SHIFT = sun_dyn_AdapterMethodHandle::CONV_DEST_TYPE_SHIFT, | |
| 117 CONV_SRC_TYPE_SHIFT = sun_dyn_AdapterMethodHandle::CONV_SRC_TYPE_SHIFT, | |
| 118 CONV_STACK_MOVE_SHIFT = sun_dyn_AdapterMethodHandle::CONV_STACK_MOVE_SHIFT, | |
| 119 CONV_STACK_MOVE_MASK = sun_dyn_AdapterMethodHandle::CONV_STACK_MOVE_MASK | |
| 120 }; | |
| 121 | |
| 122 static bool _enabled; | |
| 123 static MethodHandleEntry* _entries[_EK_LIMIT]; | |
| 124 static const char* _entry_names[_EK_LIMIT+1]; | |
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125 static jobject _raise_exception_method; |
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126 |
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127 // Adapters. |
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128 static MethodHandlesAdapterBlob* _adapter_code; |
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129 static int _adapter_code_size; |
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130 |
| 710 | 131 static bool ek_valid(EntryKind ek) { return (uint)ek < (uint)_EK_LIMIT; } |
| 132 static bool conv_op_valid(int op) { return (uint)op < (uint)CONV_OP_LIMIT; } | |
| 133 | |
| 134 public: | |
| 135 static bool have_entry(EntryKind ek) { return ek_valid(ek) && _entries[ek] != NULL; } | |
| 136 static MethodHandleEntry* entry(EntryKind ek) { assert(ek_valid(ek), "initialized"); | |
| 137 return _entries[ek]; } | |
| 138 static const char* entry_name(EntryKind ek) { assert(ek_valid(ek), "oob"); | |
| 139 return _entry_names[ek]; } | |
| 140 static EntryKind adapter_entry_kind(int op) { assert(conv_op_valid(op), "oob"); | |
| 141 return EntryKind(_adapter_mh_first + op); } | |
| 142 | |
| 143 static void init_entry(EntryKind ek, MethodHandleEntry* me) { | |
| 144 assert(ek_valid(ek), "oob"); | |
| 145 assert(_entries[ek] == NULL, "no double initialization"); | |
| 146 _entries[ek] = me; | |
| 147 } | |
| 148 | |
| 1304 | 149 // Some adapter helper functions. |
| 150 static void get_ek_bound_mh_info(EntryKind ek, BasicType& arg_type, int& arg_mask, int& arg_slots) { | |
| 151 switch (ek) { | |
| 152 case _bound_int_mh : // fall-thru | |
| 153 case _bound_int_direct_mh : arg_type = T_INT; arg_mask = _INSERT_INT_MASK; break; | |
| 154 case _bound_long_mh : // fall-thru | |
| 155 case _bound_long_direct_mh: arg_type = T_LONG; arg_mask = _INSERT_LONG_MASK; break; | |
| 156 case _bound_ref_mh : // fall-thru | |
| 157 case _bound_ref_direct_mh : arg_type = T_OBJECT; arg_mask = _INSERT_REF_MASK; break; | |
| 158 default: ShouldNotReachHere(); | |
| 159 } | |
| 160 arg_slots = type2size[arg_type]; | |
| 161 } | |
| 162 | |
| 163 static void get_ek_adapter_opt_swap_rot_info(EntryKind ek, int& swap_bytes, int& rotate) { | |
| 164 int swap_slots = 0; | |
| 165 switch (ek) { | |
| 166 case _adapter_opt_swap_1: swap_slots = 1; rotate = 0; break; | |
| 167 case _adapter_opt_swap_2: swap_slots = 2; rotate = 0; break; | |
| 168 case _adapter_opt_rot_1_up: swap_slots = 1; rotate = 1; break; | |
| 169 case _adapter_opt_rot_1_down: swap_slots = 1; rotate = -1; break; | |
| 170 case _adapter_opt_rot_2_up: swap_slots = 2; rotate = 1; break; | |
| 171 case _adapter_opt_rot_2_down: swap_slots = 2; rotate = -1; break; | |
| 172 default: ShouldNotReachHere(); | |
| 173 } | |
| 174 // Return the size of the stack slots to move in bytes. | |
| 1506 | 175 swap_bytes = swap_slots * Interpreter::stackElementSize; |
| 1304 | 176 } |
| 177 | |
| 178 static int get_ek_adapter_opt_spread_info(EntryKind ek) { | |
| 179 switch (ek) { | |
| 180 case _adapter_opt_spread_0: return 0; | |
| 181 case _adapter_opt_spread_1: return 1; | |
| 182 default : return -1; | |
| 183 } | |
| 184 } | |
| 185 | |
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186 static methodOop raise_exception_method() { |
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187 oop rem = JNIHandles::resolve(_raise_exception_method); |
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188 assert(rem == NULL || rem->is_method(), ""); |
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189 return (methodOop) rem; |
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190 } |
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191 static void set_raise_exception_method(methodOop rem) { |
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192 assert(_raise_exception_method == NULL, ""); |
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193 _raise_exception_method = JNIHandles::make_global(Handle(rem)); |
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194 } |
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195 |
| 710 | 196 static jint adapter_conversion(int conv_op, BasicType src, BasicType dest, |
| 197 int stack_move = 0, int vminfo = 0) { | |
| 198 assert(conv_op_valid(conv_op), "oob"); | |
| 199 jint conv = ((conv_op << CONV_OP_SHIFT) | |
| 200 | (src << CONV_SRC_TYPE_SHIFT) | |
| 201 | (dest << CONV_DEST_TYPE_SHIFT) | |
| 202 | (stack_move << CONV_STACK_MOVE_SHIFT) | |
| 203 | (vminfo << CONV_VMINFO_SHIFT) | |
| 204 ); | |
| 205 assert(adapter_conversion_op(conv) == conv_op, "decode conv_op"); | |
| 206 assert(adapter_conversion_src_type(conv) == src, "decode src"); | |
| 207 assert(adapter_conversion_dest_type(conv) == dest, "decode dest"); | |
| 208 assert(adapter_conversion_stack_move(conv) == stack_move, "decode stack_move"); | |
| 209 assert(adapter_conversion_vminfo(conv) == vminfo, "decode vminfo"); | |
| 210 return conv; | |
| 211 } | |
| 212 static int adapter_conversion_op(jint conv) { | |
| 213 return ((conv >> CONV_OP_SHIFT) & 0xF); | |
| 214 } | |
| 215 static BasicType adapter_conversion_src_type(jint conv) { | |
| 216 return (BasicType)((conv >> CONV_SRC_TYPE_SHIFT) & 0xF); | |
| 217 } | |
| 218 static BasicType adapter_conversion_dest_type(jint conv) { | |
| 219 return (BasicType)((conv >> CONV_DEST_TYPE_SHIFT) & 0xF); | |
| 220 } | |
| 221 static int adapter_conversion_stack_move(jint conv) { | |
| 222 return (conv >> CONV_STACK_MOVE_SHIFT); | |
| 223 } | |
| 224 static int adapter_conversion_vminfo(jint conv) { | |
| 225 return (conv >> CONV_VMINFO_SHIFT) & CONV_VMINFO_MASK; | |
| 226 } | |
| 227 | |
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228 // Bit mask of conversion_op values. May vary by platform. |
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229 static int adapter_conversion_ops_supported_mask(); |
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230 |
| 710 | 231 // Offset in words that the interpreter stack pointer moves when an argument is pushed. |
| 232 // The stack_move value must always be a multiple of this. | |
| 233 static int stack_move_unit() { | |
| 1506 | 234 return frame::interpreter_frame_expression_stack_direction() * Interpreter::stackElementWords; |
| 710 | 235 } |
| 236 | |
| 237 enum { CONV_VMINFO_SIGN_FLAG = 0x80 }; | |
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238 // Shift values for prim-to-prim conversions. |
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239 static int adapter_prim_to_prim_subword_vminfo(BasicType dest) { |
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240 if (dest == T_BOOLEAN) return (BitsPerInt - 1); // boolean is 1 bit |
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241 if (dest == T_CHAR) return (BitsPerInt - BitsPerShort); |
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242 if (dest == T_BYTE) return (BitsPerInt - BitsPerByte ) | CONV_VMINFO_SIGN_FLAG; |
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243 if (dest == T_SHORT) return (BitsPerInt - BitsPerShort) | CONV_VMINFO_SIGN_FLAG; |
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244 return 0; // case T_INT |
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245 } |
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246 // Shift values for unboxing a primitive. |
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247 static int adapter_unbox_subword_vminfo(BasicType dest) { |
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248 if (dest == T_BOOLEAN) return (BitsPerInt - BitsPerByte ); // implemented as 1 byte |
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249 if (dest == T_CHAR) return (BitsPerInt - BitsPerShort); |
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250 if (dest == T_BYTE) return (BitsPerInt - BitsPerByte ) | CONV_VMINFO_SIGN_FLAG; |
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251 if (dest == T_SHORT) return (BitsPerInt - BitsPerShort) | CONV_VMINFO_SIGN_FLAG; |
| 710 | 252 return 0; // case T_INT |
| 253 } | |
| 254 // Here is the transformation the i2i adapter must perform: | |
| 255 static int truncate_subword_from_vminfo(jint value, int vminfo) { | |
| 256 jint tem = value << vminfo; | |
| 257 if ((vminfo & CONV_VMINFO_SIGN_FLAG) != 0) { | |
| 258 return (jint)tem >> vminfo; | |
| 259 } else { | |
| 260 return (juint)tem >> vminfo; | |
| 261 } | |
| 262 } | |
| 263 | |
| 264 static inline address from_compiled_entry(EntryKind ek); | |
| 265 static inline address from_interpreted_entry(EntryKind ek); | |
| 266 | |
| 267 // helpers for decode_method. | |
| 268 static methodOop decode_methodOop(methodOop m, int& decode_flags_result); | |
| 269 static methodOop decode_vmtarget(oop vmtarget, int vmindex, oop mtype, klassOop& receiver_limit_result, int& decode_flags_result); | |
| 270 static methodOop decode_MemberName(oop mname, klassOop& receiver_limit_result, int& decode_flags_result); | |
| 271 static methodOop decode_MethodHandle(oop mh, klassOop& receiver_limit_result, int& decode_flags_result); | |
| 272 static methodOop decode_DirectMethodHandle(oop mh, klassOop& receiver_limit_result, int& decode_flags_result); | |
| 273 static methodOop decode_BoundMethodHandle(oop mh, klassOop& receiver_limit_result, int& decode_flags_result); | |
| 274 static methodOop decode_AdapterMethodHandle(oop mh, klassOop& receiver_limit_result, int& decode_flags_result); | |
| 275 | |
| 276 // Find out how many stack slots an mh pushes or pops. | |
| 277 // The result is *not* reported as a multiple of stack_move_unit(); | |
| 278 // It is a signed net number of pushes (a difference in vmslots). | |
| 279 // To compare with a stack_move value, first multiply by stack_move_unit(). | |
| 280 static int decode_MethodHandle_stack_pushes(oop mh); | |
| 281 | |
| 282 public: | |
| 283 // working with member names | |
| 284 static void resolve_MemberName(Handle mname, TRAPS); // compute vmtarget/vmindex from name/type | |
| 285 static void expand_MemberName(Handle mname, int suppress, TRAPS); // expand defc/name/type if missing | |
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286 static Handle new_MemberName(TRAPS); // must be followed by init_MemberName |
| 710 | 287 static void init_MemberName(oop mname_oop, oop target); // compute vmtarget/vmindex from target |
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288 static void init_MemberName(oop mname_oop, methodOop m, bool do_dispatch = true); |
| 710 | 289 static void init_MemberName(oop mname_oop, klassOop field_holder, AccessFlags mods, int offset); |
| 290 static int find_MemberNames(klassOop k, symbolOop name, symbolOop sig, | |
| 291 int mflags, klassOop caller, | |
| 292 int skip, objArrayOop results); | |
| 293 // bit values for suppress argument to expand_MemberName: | |
| 294 enum { _suppress_defc = 1, _suppress_name = 2, _suppress_type = 4 }; | |
| 295 | |
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296 // Generate MethodHandles adapters. |
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297 static void generate_adapters(); |
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298 |
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299 // Called from InterpreterGenerator and MethodHandlesAdapterGenerator. |
| 710 | 300 static address generate_method_handle_interpreter_entry(MacroAssembler* _masm); |
| 301 static void generate_method_handle_stub(MacroAssembler* _masm, EntryKind ek); | |
| 302 | |
| 303 // argument list parsing | |
| 304 static int argument_slot(oop method_type, int arg); | |
| 305 static int argument_slot_count(oop method_type) { return argument_slot(method_type, -1); } | |
| 306 static int argument_slot_to_argnum(oop method_type, int argslot); | |
| 307 | |
| 308 // Runtime support | |
| 309 enum { // bit-encoded flags from decode_method or decode_vmref | |
| 310 _dmf_has_receiver = 0x01, // target method has leading reference argument | |
| 311 _dmf_does_dispatch = 0x02, // method handle performs virtual or interface dispatch | |
| 312 _dmf_from_interface = 0x04, // peforms interface dispatch | |
| 313 _DMF_DIRECT_MASK = (_dmf_from_interface*2 - _dmf_has_receiver), | |
| 314 _dmf_binds_method = 0x08, | |
| 315 _dmf_binds_argument = 0x10, | |
| 316 _DMF_BOUND_MASK = (_dmf_binds_argument*2 - _dmf_binds_method), | |
| 317 _dmf_adapter_lsb = 0x20, | |
| 318 _DMF_ADAPTER_MASK = (_dmf_adapter_lsb << CONV_OP_LIMIT) - _dmf_adapter_lsb | |
| 319 }; | |
| 320 static methodOop decode_method(oop x, klassOop& receiver_limit_result, int& decode_flags_result); | |
| 321 enum { | |
| 322 // format of query to getConstant: | |
| 323 GC_JVM_PUSH_LIMIT = 0, | |
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324 GC_JVM_STACK_MOVE_UNIT = 1, |
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325 GC_CONV_OP_IMPLEMENTED_MASK = 2, |
| 710 | 326 |
| 327 // format of result from getTarget / encode_target: | |
| 328 ETF_HANDLE_OR_METHOD_NAME = 0, // all available data (immediate MH or method) | |
| 329 ETF_DIRECT_HANDLE = 1, // ultimate method handle (will be a DMH, may be self) | |
| 330 ETF_METHOD_NAME = 2, // ultimate method as MemberName | |
| 331 ETF_REFLECT_METHOD = 3 // ultimate method as java.lang.reflect object (sans refClass) | |
| 332 }; | |
| 333 static int get_named_constant(int which, Handle name_box, TRAPS); | |
| 334 static oop encode_target(Handle mh, int format, TRAPS); // report vmtarget (to Java code) | |
| 335 static bool class_cast_needed(klassOop src, klassOop dst); | |
| 336 | |
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337 static instanceKlassHandle resolve_instance_klass(oop java_mirror_oop, TRAPS); |
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338 static instanceKlassHandle resolve_instance_klass(jclass java_mirror_jh, TRAPS) { |
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339 return resolve_instance_klass(JNIHandles::resolve(java_mirror_jh), THREAD); |
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340 } |
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341 |
| 710 | 342 private: |
| 343 // These checkers operate on a pair of whole MethodTypes: | |
| 344 static const char* check_method_type_change(oop src_mtype, int src_beg, int src_end, | |
| 345 int insert_argnum, oop insert_type, | |
| 346 int change_argnum, oop change_type, | |
| 347 int delete_argnum, | |
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348 oop dst_mtype, int dst_beg, int dst_end, |
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349 bool raw = false); |
| 710 | 350 static const char* check_method_type_insertion(oop src_mtype, |
| 351 int insert_argnum, oop insert_type, | |
| 352 oop dst_mtype) { | |
| 353 oop no_ref = NULL; | |
| 354 return check_method_type_change(src_mtype, 0, -1, | |
| 355 insert_argnum, insert_type, | |
| 356 -1, no_ref, -1, dst_mtype, 0, -1); | |
| 357 } | |
| 358 static const char* check_method_type_conversion(oop src_mtype, | |
| 359 int change_argnum, oop change_type, | |
| 360 oop dst_mtype) { | |
| 361 oop no_ref = NULL; | |
| 362 return check_method_type_change(src_mtype, 0, -1, -1, no_ref, | |
| 363 change_argnum, change_type, | |
| 364 -1, dst_mtype, 0, -1); | |
| 365 } | |
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366 static const char* check_method_type_passthrough(oop src_mtype, oop dst_mtype, bool raw) { |
| 710 | 367 oop no_ref = NULL; |
| 368 return check_method_type_change(src_mtype, 0, -1, | |
| 369 -1, no_ref, -1, no_ref, -1, | |
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370 dst_mtype, 0, -1, raw); |
| 710 | 371 } |
| 372 | |
| 373 // These checkers operate on pairs of argument or return types: | |
| 374 static const char* check_argument_type_change(BasicType src_type, klassOop src_klass, | |
| 375 BasicType dst_type, klassOop dst_klass, | |
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376 int argnum, bool raw = false); |
| 710 | 377 |
| 378 static const char* check_argument_type_change(oop src_type, oop dst_type, | |
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379 int argnum, bool raw = false) { |
| 710 | 380 klassOop src_klass = NULL, dst_klass = NULL; |
| 381 BasicType src_bt = java_lang_Class::as_BasicType(src_type, &src_klass); | |
| 382 BasicType dst_bt = java_lang_Class::as_BasicType(dst_type, &dst_klass); | |
| 383 return check_argument_type_change(src_bt, src_klass, | |
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384 dst_bt, dst_klass, argnum, raw); |
| 710 | 385 } |
| 386 | |
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387 static const char* check_return_type_change(oop src_type, oop dst_type, bool raw = false) { |
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388 return check_argument_type_change(src_type, dst_type, -1, raw); |
| 710 | 389 } |
| 390 | |
| 391 static const char* check_return_type_change(BasicType src_type, klassOop src_klass, | |
| 392 BasicType dst_type, klassOop dst_klass) { | |
| 393 return check_argument_type_change(src_type, src_klass, dst_type, dst_klass, -1); | |
| 394 } | |
| 395 | |
| 396 static const char* check_method_receiver(methodOop m, klassOop passed_recv_type); | |
| 397 | |
| 398 // These verifiers can block, and will throw an error if the checking fails: | |
| 399 static void verify_vmslots(Handle mh, TRAPS); | |
| 400 static void verify_vmargslot(Handle mh, int argnum, int argslot, TRAPS); | |
| 401 | |
| 402 static void verify_method_type(methodHandle m, Handle mtype, | |
| 403 bool has_bound_oop, | |
| 404 KlassHandle bound_oop_type, | |
| 405 TRAPS); | |
| 406 | |
| 407 static void verify_method_signature(methodHandle m, Handle mtype, | |
| 408 int first_ptype_pos, | |
| 409 KlassHandle insert_ptype, TRAPS); | |
| 410 | |
| 411 static void verify_DirectMethodHandle(Handle mh, methodHandle m, TRAPS); | |
| 412 static void verify_BoundMethodHandle(Handle mh, Handle target, int argnum, | |
| 413 bool direct_to_method, TRAPS); | |
| 414 static void verify_BoundMethodHandle_with_receiver(Handle mh, methodHandle m, TRAPS); | |
| 415 static void verify_AdapterMethodHandle(Handle mh, int argnum, TRAPS); | |
| 416 | |
| 417 public: | |
| 418 | |
| 419 // Fill in the fields of a DirectMethodHandle mh. (MH.type must be pre-filled.) | |
| 420 static void init_DirectMethodHandle(Handle mh, methodHandle method, bool do_dispatch, TRAPS); | |
| 421 | |
| 422 // Fill in the fields of a BoundMethodHandle mh. (MH.type, BMH.argument must be pre-filled.) | |
| 423 static void init_BoundMethodHandle(Handle mh, Handle target, int argnum, TRAPS); | |
| 424 static void init_BoundMethodHandle_with_receiver(Handle mh, | |
| 425 methodHandle original_m, | |
| 426 KlassHandle receiver_limit, | |
| 427 int decode_flags, | |
| 428 TRAPS); | |
| 429 | |
| 430 // Fill in the fields of an AdapterMethodHandle mh. (MH.type must be pre-filled.) | |
| 431 static void init_AdapterMethodHandle(Handle mh, Handle target, int argnum, TRAPS); | |
| 432 | |
| 433 #ifdef ASSERT | |
| 434 static bool spot_check_entry_names(); | |
| 435 #endif | |
| 436 | |
| 437 private: | |
| 438 static methodHandle dispatch_decoded_method(methodHandle m, | |
| 439 KlassHandle receiver_limit, | |
| 440 int decode_flags, | |
| 441 KlassHandle receiver_klass, | |
| 442 TRAPS); | |
| 443 | |
| 444 static bool same_basic_type_for_arguments(BasicType src, BasicType dst, | |
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445 bool raw = false, |
| 710 | 446 bool for_return = false); |
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447 static bool same_basic_type_for_returns(BasicType src, BasicType dst, bool raw = false) { |
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448 return same_basic_type_for_arguments(src, dst, raw, true); |
| 710 | 449 } |
| 450 | |
| 451 enum { // arg_mask values | |
| 452 _INSERT_NO_MASK = -1, | |
| 453 _INSERT_REF_MASK = 0, | |
| 454 _INSERT_INT_MASK = 1, | |
| 455 _INSERT_LONG_MASK = 3 | |
| 456 }; | |
| 457 static void insert_arg_slots(MacroAssembler* _masm, | |
| 458 RegisterOrConstant arg_slots, | |
| 459 int arg_mask, | |
| 1304 | 460 Register argslot_reg, |
| 1503 | 461 Register temp_reg, Register temp2_reg, Register temp3_reg = noreg); |
| 710 | 462 |
| 463 static void remove_arg_slots(MacroAssembler* _masm, | |
| 464 RegisterOrConstant arg_slots, | |
| 1304 | 465 Register argslot_reg, |
| 1503 | 466 Register temp_reg, Register temp2_reg, Register temp3_reg = noreg); |
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467 |
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468 static void trace_method_handle(MacroAssembler* _masm, const char* adaptername) PRODUCT_RETURN; |
| 710 | 469 }; |
| 470 | |
| 471 | |
| 472 // Access methods for the "entry" field of a java.dyn.MethodHandle. | |
| 473 // The field is primarily a jump target for compiled calls. | |
| 474 // However, we squirrel away some nice pointers for other uses, | |
| 475 // just before the jump target. | |
| 476 // Aspects of a method handle entry: | |
| 477 // - from_compiled_entry - stub used when compiled code calls the MH | |
| 478 // - from_interpreted_entry - stub used when the interpreter calls the MH | |
| 479 // - type_checking_entry - stub for runtime casting between MHForm siblings (NYI) | |
| 480 class MethodHandleEntry { | |
| 481 public: | |
| 482 class Data { | |
| 483 friend class MethodHandleEntry; | |
| 484 size_t _total_size; // size including Data and code stub | |
| 485 MethodHandleEntry* _type_checking_entry; | |
| 486 address _from_interpreted_entry; | |
| 487 MethodHandleEntry* method_entry() { return (MethodHandleEntry*)(this + 1); } | |
| 488 }; | |
| 489 | |
| 490 Data* data() { return (Data*)this - 1; } | |
| 491 | |
| 492 address start_address() { return (address) data(); } | |
| 493 address end_address() { return start_address() + data()->_total_size; } | |
| 494 | |
| 495 address from_compiled_entry() { return (address) this; } | |
| 496 | |
| 497 address from_interpreted_entry() { return data()->_from_interpreted_entry; } | |
| 498 void set_from_interpreted_entry(address e) { data()->_from_interpreted_entry = e; } | |
| 499 | |
| 500 MethodHandleEntry* type_checking_entry() { return data()->_type_checking_entry; } | |
| 501 void set_type_checking_entry(MethodHandleEntry* e) { data()->_type_checking_entry = e; } | |
| 502 | |
| 503 void set_end_address(address end_addr) { | |
| 504 size_t total_size = end_addr - start_address(); | |
| 505 assert(total_size > 0 && total_size < 0x1000, "reasonable end address"); | |
| 506 data()->_total_size = total_size; | |
| 507 } | |
| 508 | |
| 509 // Compiler support: | |
| 510 static int from_interpreted_entry_offset_in_bytes() { | |
| 511 return (int)( offset_of(Data, _from_interpreted_entry) - sizeof(Data) ); | |
| 512 } | |
| 513 static int type_checking_entry_offset_in_bytes() { | |
| 514 return (int)( offset_of(Data, _from_interpreted_entry) - sizeof(Data) ); | |
| 515 } | |
| 516 | |
| 517 static address start_compiled_entry(MacroAssembler* _masm, | |
| 518 address interpreted_entry = NULL); | |
| 519 static MethodHandleEntry* finish_compiled_entry(MacroAssembler* masm, address start_addr); | |
| 520 }; | |
| 521 | |
| 522 address MethodHandles::from_compiled_entry(EntryKind ek) { return entry(ek)->from_compiled_entry(); } | |
| 523 address MethodHandles::from_interpreted_entry(EntryKind ek) { return entry(ek)->from_interpreted_entry(); } | |
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524 |
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525 |
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526 //------------------------------------------------------------------------------ |
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527 // MethodHandlesAdapterGenerator |
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528 // |
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529 class MethodHandlesAdapterGenerator : public StubCodeGenerator { |
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530 public: |
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531 MethodHandlesAdapterGenerator(CodeBuffer* code) : StubCodeGenerator(code) {} |
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532 |
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533 void generate(); |
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534 }; |
| 1972 | 535 |
| 536 #endif // SHARE_VM_PRIMS_METHODHANDLES_HPP |