Mercurial > hg > truffle
annotate src/cpu/sparc/vm/methodHandles_sparc.cpp @ 1564:61b2245abf36
6930772: JSR 292 needs to support SPARC C1
Summary: C1 for SPARC needs to support JSR 292.
Reviewed-by: never, jrose
| author | twisti |
|---|---|
| date | Fri, 21 May 2010 02:59:24 -0700 |
| parents | cd5dbf694d45 |
| children | e9ff18c4ace7 |
| rev | line source |
|---|---|
| 710 | 1 /* |
| 1503 | 2 * Copyright 2008-2010 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_methodHandles_sparc.cpp.incl" | |
| 27 | |
| 28 #define __ _masm-> | |
| 29 | |
| 30 address MethodHandleEntry::start_compiled_entry(MacroAssembler* _masm, | |
| 31 address interpreted_entry) { | |
| 1503 | 32 // Just before the actual machine code entry point, allocate space |
| 33 // for a MethodHandleEntry::Data record, so that we can manage everything | |
| 34 // from one base pointer. | |
| 710 | 35 __ align(wordSize); |
| 36 address target = __ pc() + sizeof(Data); | |
| 37 while (__ pc() < target) { | |
| 38 __ nop(); | |
| 39 __ align(wordSize); | |
| 40 } | |
| 41 | |
| 42 MethodHandleEntry* me = (MethodHandleEntry*) __ pc(); | |
| 43 me->set_end_address(__ pc()); // set a temporary end_address | |
| 44 me->set_from_interpreted_entry(interpreted_entry); | |
| 45 me->set_type_checking_entry(NULL); | |
| 46 | |
| 47 return (address) me; | |
| 48 } | |
| 49 | |
| 50 MethodHandleEntry* MethodHandleEntry::finish_compiled_entry(MacroAssembler* _masm, | |
| 51 address start_addr) { | |
| 52 MethodHandleEntry* me = (MethodHandleEntry*) start_addr; | |
| 53 assert(me->end_address() == start_addr, "valid ME"); | |
| 54 | |
| 55 // Fill in the real end_address: | |
| 56 __ align(wordSize); | |
| 57 me->set_end_address(__ pc()); | |
| 58 | |
| 59 return me; | |
| 60 } | |
| 61 | |
| 62 | |
| 63 // Code generation | |
| 64 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) { | |
| 1503 | 65 // I5_savedSP: sender SP (must preserve) |
| 66 // G4 (Gargs): incoming argument list (must preserve) | |
| 67 // G5_method: invoke methodOop; becomes method type. | |
| 68 // G3_method_handle: receiver method handle (must load from sp[MethodTypeForm.vmslots]) | |
| 69 // O0, O1: garbage temps, blown away | |
| 70 Register O0_argslot = O0; | |
| 71 Register O1_scratch = O1; | |
| 72 | |
| 73 // emit WrongMethodType path first, to enable back-branch from main path | |
| 74 Label wrong_method_type; | |
| 75 __ bind(wrong_method_type); | |
| 76 __ jump_to(AddressLiteral(Interpreter::throw_WrongMethodType_entry()), O1_scratch); | |
| 77 __ delayed()->nop(); | |
| 78 | |
| 79 // here's where control starts out: | |
| 80 __ align(CodeEntryAlignment); | |
| 81 address entry_point = __ pc(); | |
| 82 | |
| 83 // fetch the MethodType from the method handle into G5_method_type | |
| 84 { | |
| 85 Register tem = G5_method; | |
| 86 assert(tem == G5_method_type, "yes, it's the same register"); | |
| 87 for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) { | |
| 88 __ ld_ptr(Address(tem, *pchase), G5_method_type); | |
| 89 } | |
| 90 } | |
| 91 | |
| 92 // given the MethodType, find out where the MH argument is buried | |
| 93 __ ld_ptr(Address(G5_method_type, __ delayed_value(java_dyn_MethodType::form_offset_in_bytes, O1_scratch)), O0_argslot); | |
| 94 __ ldsw( Address(O0_argslot, __ delayed_value(java_dyn_MethodTypeForm::vmslots_offset_in_bytes, O1_scratch)), O0_argslot); | |
| 95 __ ld_ptr(__ argument_address(O0_argslot), G3_method_handle); | |
| 96 | |
| 97 __ check_method_handle_type(G5_method_type, G3_method_handle, O1_scratch, wrong_method_type); | |
| 98 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); | |
| 99 | |
| 100 return entry_point; | |
| 710 | 101 } |
| 102 | |
| 1503 | 103 |
| 104 #ifdef ASSERT | |
| 105 static void verify_argslot(MacroAssembler* _masm, Register argslot_reg, Register temp_reg, const char* error_message) { | |
| 106 // Verify that argslot lies within (Gargs, FP]. | |
| 107 Label L_ok, L_bad; | |
| 108 #ifdef _LP64 | |
| 109 __ add(FP, STACK_BIAS, temp_reg); | |
| 110 __ cmp(argslot_reg, temp_reg); | |
| 111 #else | |
| 112 __ cmp(argslot_reg, FP); | |
| 113 #endif | |
| 114 __ brx(Assembler::greaterUnsigned, false, Assembler::pn, L_bad); | |
| 115 __ delayed()->nop(); | |
| 116 __ cmp(Gargs, argslot_reg); | |
| 117 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok); | |
| 118 __ delayed()->nop(); | |
| 119 __ bind(L_bad); | |
| 120 __ stop(error_message); | |
| 121 __ bind(L_ok); | |
| 122 } | |
| 123 #endif | |
| 124 | |
| 125 | |
| 126 // Helper to insert argument slots into the stack. | |
| 127 // arg_slots must be a multiple of stack_move_unit() and <= 0 | |
| 128 void MethodHandles::insert_arg_slots(MacroAssembler* _masm, | |
| 129 RegisterOrConstant arg_slots, | |
| 130 int arg_mask, | |
| 131 Register argslot_reg, | |
| 132 Register temp_reg, Register temp2_reg, Register temp3_reg) { | |
| 133 assert(temp3_reg != noreg, "temp3 required"); | |
| 134 assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg, | |
| 135 (!arg_slots.is_register() ? Gargs : arg_slots.as_register())); | |
| 136 | |
| 137 #ifdef ASSERT | |
| 138 verify_argslot(_masm, argslot_reg, temp_reg, "insertion point must fall within current frame"); | |
| 139 if (arg_slots.is_register()) { | |
| 140 Label L_ok, L_bad; | |
| 141 __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD); | |
| 142 __ br(Assembler::greater, false, Assembler::pn, L_bad); | |
| 143 __ delayed()->nop(); | |
| 144 __ btst(-stack_move_unit() - 1, arg_slots.as_register()); | |
| 145 __ br(Assembler::zero, false, Assembler::pt, L_ok); | |
| 146 __ delayed()->nop(); | |
| 147 __ bind(L_bad); | |
| 148 __ stop("assert arg_slots <= 0 and clear low bits"); | |
| 149 __ bind(L_ok); | |
| 150 } else { | |
| 151 assert(arg_slots.as_constant() <= 0, ""); | |
| 152 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
| 153 } | |
| 154 #endif // ASSERT | |
| 155 | |
| 156 #ifdef _LP64 | |
| 157 if (arg_slots.is_register()) { | |
| 158 // Was arg_slots register loaded as signed int? | |
| 159 Label L_ok; | |
| 160 __ sll(arg_slots.as_register(), BitsPerInt, temp_reg); | |
| 161 __ sra(temp_reg, BitsPerInt, temp_reg); | |
| 162 __ cmp(arg_slots.as_register(), temp_reg); | |
| 163 __ br(Assembler::equal, false, Assembler::pt, L_ok); | |
| 164 __ delayed()->nop(); | |
| 165 __ stop("arg_slots register not loaded as signed int"); | |
| 166 __ bind(L_ok); | |
| 167 } | |
| 168 #endif | |
| 169 | |
| 170 // Make space on the stack for the inserted argument(s). | |
| 171 // Then pull down everything shallower than argslot_reg. | |
| 172 // The stacked return address gets pulled down with everything else. | |
| 173 // That is, copy [sp, argslot) downward by -size words. In pseudo-code: | |
| 174 // sp -= size; | |
| 175 // for (temp = sp + size; temp < argslot; temp++) | |
| 176 // temp[-size] = temp[0] | |
| 177 // argslot -= size; | |
| 178 RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg); | |
| 179 | |
| 180 // Keep the stack pointer 2*wordSize aligned. | |
| 181 const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1); | |
| 182 RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg); | |
| 183 __ add(SP, masked_offset, SP); | |
| 184 | |
| 185 __ mov(Gargs, temp_reg); // source pointer for copy | |
| 186 __ add(Gargs, offset, Gargs); | |
| 187 | |
| 188 { | |
| 189 Label loop; | |
| 190 __ bind(loop); | |
| 191 // pull one word down each time through the loop | |
| 192 __ ld_ptr(Address(temp_reg, 0), temp2_reg); | |
| 193 __ st_ptr(temp2_reg, Address(temp_reg, offset)); | |
| 194 __ add(temp_reg, wordSize, temp_reg); | |
| 195 __ cmp(temp_reg, argslot_reg); | |
| 196 __ brx(Assembler::less, false, Assembler::pt, loop); | |
| 197 __ delayed()->nop(); // FILLME | |
| 198 } | |
| 199 | |
| 200 // Now move the argslot down, to point to the opened-up space. | |
| 201 __ add(argslot_reg, offset, argslot_reg); | |
| 202 } | |
| 203 | |
| 204 | |
| 205 // Helper to remove argument slots from the stack. | |
| 206 // arg_slots must be a multiple of stack_move_unit() and >= 0 | |
| 207 void MethodHandles::remove_arg_slots(MacroAssembler* _masm, | |
| 208 RegisterOrConstant arg_slots, | |
| 209 Register argslot_reg, | |
| 210 Register temp_reg, Register temp2_reg, Register temp3_reg) { | |
| 211 assert(temp3_reg != noreg, "temp3 required"); | |
| 212 assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg, | |
| 213 (!arg_slots.is_register() ? Gargs : arg_slots.as_register())); | |
| 214 | |
| 215 RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg); | |
| 216 | |
| 217 #ifdef ASSERT | |
| 218 // Verify that [argslot..argslot+size) lies within (Gargs, FP). | |
| 219 __ add(argslot_reg, offset, temp2_reg); | |
| 220 verify_argslot(_masm, temp2_reg, temp_reg, "deleted argument(s) must fall within current frame"); | |
| 221 if (arg_slots.is_register()) { | |
| 222 Label L_ok, L_bad; | |
| 223 __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD); | |
| 224 __ br(Assembler::less, false, Assembler::pn, L_bad); | |
| 225 __ delayed()->nop(); | |
| 226 __ btst(-stack_move_unit() - 1, arg_slots.as_register()); | |
| 227 __ br(Assembler::zero, false, Assembler::pt, L_ok); | |
| 228 __ delayed()->nop(); | |
| 229 __ bind(L_bad); | |
| 230 __ stop("assert arg_slots >= 0 and clear low bits"); | |
| 231 __ bind(L_ok); | |
| 232 } else { | |
| 233 assert(arg_slots.as_constant() >= 0, ""); | |
| 234 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
| 235 } | |
| 236 #endif // ASSERT | |
| 237 | |
| 238 // Pull up everything shallower than argslot. | |
| 239 // Then remove the excess space on the stack. | |
| 240 // The stacked return address gets pulled up with everything else. | |
| 241 // That is, copy [sp, argslot) upward by size words. In pseudo-code: | |
| 242 // for (temp = argslot-1; temp >= sp; --temp) | |
| 243 // temp[size] = temp[0] | |
| 244 // argslot += size; | |
| 245 // sp += size; | |
| 246 __ sub(argslot_reg, wordSize, temp_reg); // source pointer for copy | |
| 247 { | |
| 248 Label loop; | |
| 249 __ bind(loop); | |
| 250 // pull one word up each time through the loop | |
| 251 __ ld_ptr(Address(temp_reg, 0), temp2_reg); | |
| 252 __ st_ptr(temp2_reg, Address(temp_reg, offset)); | |
| 253 __ sub(temp_reg, wordSize, temp_reg); | |
| 254 __ cmp(temp_reg, Gargs); | |
| 255 __ brx(Assembler::greaterEqual, false, Assembler::pt, loop); | |
| 256 __ delayed()->nop(); // FILLME | |
| 257 } | |
| 258 | |
| 259 // Now move the argslot up, to point to the just-copied block. | |
| 260 __ add(Gargs, offset, Gargs); | |
| 261 // And adjust the argslot address to point at the deletion point. | |
| 262 __ add(argslot_reg, offset, argslot_reg); | |
| 263 | |
| 264 // Keep the stack pointer 2*wordSize aligned. | |
| 265 const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1); | |
| 266 RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg); | |
| 267 __ add(SP, masked_offset, SP); | |
| 268 } | |
| 269 | |
| 270 | |
| 271 #ifndef PRODUCT | |
| 272 extern "C" void print_method_handle(oop mh); | |
| 273 void trace_method_handle_stub(const char* adaptername, | |
| 274 oop mh) { | |
| 275 #if 0 | |
| 276 intptr_t* entry_sp, | |
| 277 intptr_t* saved_sp, | |
| 278 intptr_t* saved_bp) { | |
| 279 // called as a leaf from native code: do not block the JVM! | |
| 280 intptr_t* last_sp = (intptr_t*) saved_bp[frame::interpreter_frame_last_sp_offset]; | |
| 281 intptr_t* base_sp = (intptr_t*) saved_bp[frame::interpreter_frame_monitor_block_top_offset]; | |
| 282 printf("MH %s mh="INTPTR_FORMAT" sp=("INTPTR_FORMAT"+"INTX_FORMAT") stack_size="INTX_FORMAT" bp="INTPTR_FORMAT"\n", | |
| 283 adaptername, (intptr_t)mh, (intptr_t)entry_sp, (intptr_t)(saved_sp - entry_sp), (intptr_t)(base_sp - last_sp), (intptr_t)saved_bp); | |
| 284 if (last_sp != saved_sp) | |
| 285 printf("*** last_sp="INTPTR_FORMAT"\n", (intptr_t)last_sp); | |
| 286 #endif | |
| 287 | |
| 288 printf("MH %s mh="INTPTR_FORMAT"\n", adaptername, (intptr_t) mh); | |
| 289 print_method_handle(mh); | |
| 290 } | |
| 291 #endif // PRODUCT | |
| 292 | |
|
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293 // which conversion op types are implemented here? |
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294 int MethodHandles::adapter_conversion_ops_supported_mask() { |
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295 return ((1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_ONLY) |
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296 |(1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW) |
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297 |(1<<sun_dyn_AdapterMethodHandle::OP_CHECK_CAST) |
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298 |(1<<sun_dyn_AdapterMethodHandle::OP_PRIM_TO_PRIM) |
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299 |(1<<sun_dyn_AdapterMethodHandle::OP_REF_TO_PRIM) |
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300 |(1<<sun_dyn_AdapterMethodHandle::OP_SWAP_ARGS) |
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301 |(1<<sun_dyn_AdapterMethodHandle::OP_ROT_ARGS) |
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302 |(1<<sun_dyn_AdapterMethodHandle::OP_DUP_ARGS) |
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303 |(1<<sun_dyn_AdapterMethodHandle::OP_DROP_ARGS) |
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304 //|(1<<sun_dyn_AdapterMethodHandle::OP_SPREAD_ARGS) //BUG! |
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305 ); |
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306 // FIXME: MethodHandlesTest gets a crash if we enable OP_SPREAD_ARGS. |
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307 } |
| 1503 | 308 |
| 309 //------------------------------------------------------------------------------ | |
| 310 // MethodHandles::generate_method_handle_stub | |
| 311 // | |
| 710 | 312 // Generate an "entry" field for a method handle. |
| 313 // This determines how the method handle will respond to calls. | |
| 314 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) { | |
| 1503 | 315 // Here is the register state during an interpreted call, |
| 316 // as set up by generate_method_handle_interpreter_entry(): | |
| 317 // - G5: garbage temp (was MethodHandle.invoke methodOop, unused) | |
| 318 // - G3: receiver method handle | |
| 319 // - O5_savedSP: sender SP (must preserve) | |
| 320 | |
| 321 Register O0_argslot = O0; | |
| 322 Register O1_scratch = O1; | |
| 323 Register O2_scratch = O2; | |
| 324 Register O3_scratch = O3; | |
| 325 Register G5_index = G5; | |
| 326 | |
| 327 guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets"); | |
| 328 | |
| 329 // Some handy addresses: | |
| 330 Address G5_method_fie( G5_method, in_bytes(methodOopDesc::from_interpreted_offset())); | |
| 331 | |
| 332 Address G3_mh_vmtarget( G3_method_handle, java_dyn_MethodHandle::vmtarget_offset_in_bytes()); | |
| 333 | |
| 334 Address G3_dmh_vmindex( G3_method_handle, sun_dyn_DirectMethodHandle::vmindex_offset_in_bytes()); | |
| 335 | |
| 336 Address G3_bmh_vmargslot( G3_method_handle, sun_dyn_BoundMethodHandle::vmargslot_offset_in_bytes()); | |
| 337 Address G3_bmh_argument( G3_method_handle, sun_dyn_BoundMethodHandle::argument_offset_in_bytes()); | |
| 338 | |
| 339 Address G3_amh_vmargslot( G3_method_handle, sun_dyn_AdapterMethodHandle::vmargslot_offset_in_bytes()); | |
| 340 Address G3_amh_argument ( G3_method_handle, sun_dyn_AdapterMethodHandle::argument_offset_in_bytes()); | |
| 341 Address G3_amh_conversion(G3_method_handle, sun_dyn_AdapterMethodHandle::conversion_offset_in_bytes()); | |
| 342 | |
| 343 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); | |
| 344 | |
| 345 if (have_entry(ek)) { | |
| 346 __ nop(); // empty stubs make SG sick | |
| 347 return; | |
| 348 } | |
| 349 | |
| 350 address interp_entry = __ pc(); | |
| 351 if (UseCompressedOops) __ unimplemented("UseCompressedOops"); | |
| 352 | |
| 353 #ifndef PRODUCT | |
| 354 if (TraceMethodHandles) { | |
| 355 // save: Gargs, O5_savedSP | |
| 356 __ save(SP, -16*wordSize, SP); | |
| 357 __ set((intptr_t) entry_name(ek), O0); | |
| 358 __ mov(G3_method_handle, O1); | |
| 359 __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, trace_method_handle_stub)); | |
| 360 __ restore(SP, 16*wordSize, SP); | |
| 361 } | |
| 362 #endif // PRODUCT | |
| 363 | |
| 364 switch ((int) ek) { | |
| 365 case _raise_exception: | |
| 366 { | |
| 367 // Not a real MH entry, but rather shared code for raising an | |
| 368 // exception. Extra local arguments are passed in scratch | |
| 369 // registers, as required type in O3, failing object (or NULL) | |
| 370 // in O2, failing bytecode type in O1. | |
| 371 | |
| 372 __ mov(O5_savedSP, SP); // Cut the stack back to where the caller started. | |
| 373 | |
| 374 // Push arguments as if coming from the interpreter. | |
| 375 Register O0_scratch = O0_argslot; | |
| 1506 | 376 int stackElementSize = Interpreter::stackElementSize; |
| 1503 | 377 |
| 1564 | 378 // Make space on the stack for the arguments and set Gargs |
| 379 // correctly. | |
| 380 __ sub(SP, 4*stackElementSize, SP); // Keep stack aligned. | |
| 381 __ add(SP, (frame::varargs_offset)*wordSize - 1*Interpreter::stackElementSize + STACK_BIAS + BytesPerWord, Gargs); | |
| 1503 | 382 |
| 383 // void raiseException(int code, Object actual, Object required) | |
| 384 __ st( O1_scratch, Address(Gargs, 2*stackElementSize)); // code | |
| 385 __ st_ptr(O2_scratch, Address(Gargs, 1*stackElementSize)); // actual | |
| 386 __ st_ptr(O3_scratch, Address(Gargs, 0*stackElementSize)); // required | |
| 387 | |
| 388 Label no_method; | |
| 389 // FIXME: fill in _raise_exception_method with a suitable sun.dyn method | |
| 390 __ set(AddressLiteral((address) &_raise_exception_method), G5_method); | |
| 391 __ ld_ptr(Address(G5_method, 0), G5_method); | |
| 392 __ tst(G5_method); | |
| 393 __ brx(Assembler::zero, false, Assembler::pn, no_method); | |
| 394 __ delayed()->nop(); | |
| 395 | |
| 396 int jobject_oop_offset = 0; | |
| 397 __ ld_ptr(Address(G5_method, jobject_oop_offset), G5_method); | |
| 398 __ tst(G5_method); | |
| 399 __ brx(Assembler::zero, false, Assembler::pn, no_method); | |
| 400 __ delayed()->nop(); | |
| 401 | |
| 402 __ verify_oop(G5_method); | |
| 403 __ jump_indirect_to(G5_method_fie, O1_scratch); | |
| 404 __ delayed()->nop(); | |
| 405 | |
| 406 // If we get here, the Java runtime did not do its job of creating the exception. | |
| 407 // Do something that is at least causes a valid throw from the interpreter. | |
| 408 __ bind(no_method); | |
| 409 __ unimplemented("_raise_exception no method"); | |
| 410 } | |
| 411 break; | |
| 412 | |
| 413 case _invokestatic_mh: | |
| 414 case _invokespecial_mh: | |
| 415 { | |
| 416 __ ld_ptr(G3_mh_vmtarget, G5_method); // target is a methodOop | |
| 417 __ verify_oop(G5_method); | |
| 418 // Same as TemplateTable::invokestatic or invokespecial, | |
| 419 // minus the CP setup and profiling: | |
| 420 if (ek == _invokespecial_mh) { | |
| 421 // Must load & check the first argument before entering the target method. | |
| 422 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch); | |
| 423 __ ld_ptr(__ argument_address(O0_argslot), G3_method_handle); | |
| 424 __ null_check(G3_method_handle); | |
| 425 __ verify_oop(G3_method_handle); | |
| 426 } | |
| 427 __ jump_indirect_to(G5_method_fie, O1_scratch); | |
| 428 __ delayed()->nop(); | |
| 429 } | |
| 430 break; | |
| 431 | |
| 432 case _invokevirtual_mh: | |
| 433 { | |
| 434 // Same as TemplateTable::invokevirtual, | |
| 435 // minus the CP setup and profiling: | |
| 436 | |
| 437 // Pick out the vtable index and receiver offset from the MH, | |
| 438 // and then we can discard it: | |
| 439 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch); | |
| 440 __ ldsw(G3_dmh_vmindex, G5_index); | |
| 441 // Note: The verifier allows us to ignore G3_mh_vmtarget. | |
| 442 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle); | |
| 443 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes()); | |
| 444 | |
| 445 // Get receiver klass: | |
| 446 Register O0_klass = O0_argslot; | |
| 447 __ load_klass(G3_method_handle, O0_klass); | |
| 448 __ verify_oop(O0_klass); | |
| 449 | |
| 450 // Get target methodOop & entry point: | |
| 451 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
| 452 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); | |
| 453 | |
| 454 __ sll_ptr(G5_index, LogBytesPerWord, G5_index); | |
| 455 __ add(O0_klass, G5_index, O0_klass); | |
| 456 Address vtable_entry_addr(O0_klass, base + vtableEntry::method_offset_in_bytes()); | |
| 457 __ ld_ptr(vtable_entry_addr, G5_method); | |
| 458 | |
| 459 __ verify_oop(G5_method); | |
| 460 __ jump_indirect_to(G5_method_fie, O1_scratch); | |
| 461 __ delayed()->nop(); | |
| 462 } | |
| 463 break; | |
| 464 | |
| 465 case _invokeinterface_mh: | |
| 466 { | |
| 467 // Same as TemplateTable::invokeinterface, | |
| 468 // minus the CP setup and profiling: | |
| 469 __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch); | |
| 470 Register O1_intf = O1_scratch; | |
| 471 __ ld_ptr(G3_mh_vmtarget, O1_intf); | |
| 472 __ ldsw(G3_dmh_vmindex, G5_index); | |
| 473 __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle); | |
| 474 __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes()); | |
| 475 | |
| 476 // Get receiver klass: | |
| 477 Register O0_klass = O0_argslot; | |
| 478 __ load_klass(G3_method_handle, O0_klass); | |
| 479 __ verify_oop(O0_klass); | |
| 480 | |
| 481 // Get interface: | |
| 482 Label no_such_interface; | |
| 483 __ verify_oop(O1_intf); | |
| 484 __ lookup_interface_method(O0_klass, O1_intf, | |
| 485 // Note: next two args must be the same: | |
| 486 G5_index, G5_method, | |
| 487 O2_scratch, | |
| 488 O3_scratch, | |
| 489 no_such_interface); | |
| 490 | |
| 491 __ verify_oop(G5_method); | |
| 492 __ jump_indirect_to(G5_method_fie, O1_scratch); | |
| 493 __ delayed()->nop(); | |
| 494 | |
| 495 __ bind(no_such_interface); | |
| 496 // Throw an exception. | |
| 497 // For historical reasons, it will be IncompatibleClassChangeError. | |
| 498 __ unimplemented("not tested yet"); | |
| 499 __ ld_ptr(Address(O1_intf, java_mirror_offset), O3_scratch); // required interface | |
| 500 __ mov(O0_klass, O2_scratch); // bad receiver | |
| 501 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O0_argslot); | |
| 502 __ delayed()->mov(Bytecodes::_invokeinterface, O1_scratch); // who is complaining? | |
| 503 } | |
| 504 break; | |
| 505 | |
| 506 case _bound_ref_mh: | |
| 507 case _bound_int_mh: | |
| 508 case _bound_long_mh: | |
| 509 case _bound_ref_direct_mh: | |
| 510 case _bound_int_direct_mh: | |
| 511 case _bound_long_direct_mh: | |
| 512 { | |
| 513 const bool direct_to_method = (ek >= _bound_ref_direct_mh); | |
| 514 BasicType arg_type = T_ILLEGAL; | |
| 515 int arg_mask = _INSERT_NO_MASK; | |
| 516 int arg_slots = -1; | |
| 517 get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots); | |
| 518 | |
| 519 // Make room for the new argument: | |
| 520 __ ldsw(G3_bmh_vmargslot, O0_argslot); | |
| 521 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); | |
| 522 | |
| 523 insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, O0_argslot, O1_scratch, O2_scratch, G5_index); | |
| 524 | |
| 525 // Store bound argument into the new stack slot: | |
| 526 __ ld_ptr(G3_bmh_argument, O1_scratch); | |
| 527 if (arg_type == T_OBJECT) { | |
| 528 __ st_ptr(O1_scratch, Address(O0_argslot, 0)); | |
| 529 } else { | |
| 530 Address prim_value_addr(O1_scratch, java_lang_boxing_object::value_offset_in_bytes(arg_type)); | |
| 531 __ load_sized_value(prim_value_addr, O2_scratch, type2aelembytes(arg_type), is_signed_subword_type(arg_type)); | |
| 532 if (arg_slots == 2) { | |
| 533 __ unimplemented("not yet tested"); | |
| 534 #ifndef _LP64 | |
| 535 __ signx(O2_scratch, O3_scratch); // Sign extend | |
| 536 #endif | |
| 537 __ st_long(O2_scratch, Address(O0_argslot, 0)); // Uses O2/O3 on !_LP64 | |
| 538 } else { | |
| 539 __ st_ptr( O2_scratch, Address(O0_argslot, 0)); | |
| 540 } | |
| 541 } | |
| 542 | |
| 543 if (direct_to_method) { | |
| 544 __ ld_ptr(G3_mh_vmtarget, G5_method); // target is a methodOop | |
| 545 __ verify_oop(G5_method); | |
| 546 __ jump_indirect_to(G5_method_fie, O1_scratch); | |
| 547 __ delayed()->nop(); | |
| 548 } else { | |
| 549 __ ld_ptr(G3_mh_vmtarget, G3_method_handle); // target is a methodOop | |
| 550 __ verify_oop(G3_method_handle); | |
| 551 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); | |
| 552 } | |
| 553 } | |
| 554 break; | |
| 555 | |
| 556 case _adapter_retype_only: | |
| 557 case _adapter_retype_raw: | |
| 558 // Immediately jump to the next MH layer: | |
| 559 __ ld_ptr(G3_mh_vmtarget, G3_method_handle); | |
| 560 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); | |
| 561 // This is OK when all parameter types widen. | |
| 562 // It is also OK when a return type narrows. | |
| 563 break; | |
| 564 | |
| 565 case _adapter_check_cast: | |
| 566 { | |
| 567 // Temps: | |
| 568 Register G5_klass = G5_index; // Interesting AMH data. | |
| 569 | |
| 570 // Check a reference argument before jumping to the next layer of MH: | |
| 571 __ ldsw(G3_amh_vmargslot, O0_argslot); | |
| 572 Address vmarg = __ argument_address(O0_argslot); | |
| 573 | |
| 574 // What class are we casting to? | |
| 575 __ ld_ptr(G3_amh_argument, G5_klass); // This is a Class object! | |
| 576 __ ld_ptr(Address(G5_klass, java_lang_Class::klass_offset_in_bytes()), G5_klass); | |
| 577 | |
| 578 Label done; | |
| 579 __ ld_ptr(vmarg, O1_scratch); | |
| 580 __ tst(O1_scratch); | |
| 581 __ brx(Assembler::zero, false, Assembler::pn, done); // No cast if null. | |
| 582 __ delayed()->nop(); | |
| 583 __ load_klass(O1_scratch, O1_scratch); | |
| 584 | |
| 585 // Live at this point: | |
| 586 // - G5_klass : klass required by the target method | |
| 587 // - O1_scratch : argument klass to test | |
| 588 // - G3_method_handle: adapter method handle | |
| 589 __ check_klass_subtype(O1_scratch, G5_klass, O0_argslot, O2_scratch, done); | |
| 590 | |
| 591 // If we get here, the type check failed! | |
| 592 __ ldsw(G3_amh_vmargslot, O0_argslot); // reload argslot field | |
| 593 __ ld_ptr(G3_amh_argument, O3_scratch); // required class | |
| 594 __ ld_ptr(vmarg, O2_scratch); // bad object | |
| 595 __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O0_argslot); | |
| 596 __ delayed()->mov(Bytecodes::_checkcast, O1_scratch); // who is complaining? | |
| 597 | |
| 598 __ bind(done); | |
| 599 // Get the new MH: | |
| 600 __ ld_ptr(G3_mh_vmtarget, G3_method_handle); | |
| 601 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); | |
| 602 } | |
| 603 break; | |
| 604 | |
| 605 case _adapter_prim_to_prim: | |
| 606 case _adapter_ref_to_prim: | |
| 607 // Handled completely by optimized cases. | |
| 608 __ stop("init_AdapterMethodHandle should not issue this"); | |
| 609 break; | |
| 610 | |
| 611 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim | |
| 612 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim | |
| 613 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim | |
| 614 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim | |
| 615 { | |
| 616 // Perform an in-place conversion to int or an int subword. | |
| 617 __ ldsw(G3_amh_vmargslot, O0_argslot); | |
| 618 Address vmarg = __ argument_address(O0_argslot); | |
| 619 Address value; | |
| 620 bool value_left_justified = false; | |
| 621 | |
| 622 switch (ek) { | |
| 623 case _adapter_opt_i2i: | |
| 624 case _adapter_opt_l2i: | |
| 625 __ unimplemented(entry_name(ek)); | |
| 626 value = vmarg; | |
| 627 break; | |
| 628 case _adapter_opt_unboxi: | |
| 629 { | |
| 630 // Load the value up from the heap. | |
| 631 __ ld_ptr(vmarg, O1_scratch); | |
| 632 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT); | |
| 633 #ifdef ASSERT | |
| 634 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { | |
| 635 if (is_subword_type(BasicType(bt))) | |
| 636 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), ""); | |
| 637 } | |
| 638 #endif | |
| 639 __ null_check(O1_scratch, value_offset); | |
| 640 value = Address(O1_scratch, value_offset); | |
| 641 #ifdef _BIG_ENDIAN | |
| 642 // Values stored in objects are packed. | |
| 643 value_left_justified = true; | |
| 644 #endif | |
| 645 } | |
| 646 break; | |
| 647 default: | |
| 648 ShouldNotReachHere(); | |
| 649 } | |
| 650 | |
| 651 // This check is required on _BIG_ENDIAN | |
| 652 Register G5_vminfo = G5_index; | |
| 653 __ ldsw(G3_amh_conversion, G5_vminfo); | |
| 654 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
| 655 | |
| 656 // Original 32-bit vmdata word must be of this form: | |
| 657 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 | | |
| 658 __ lduw(value, O1_scratch); | |
| 659 if (!value_left_justified) | |
| 660 __ sll(O1_scratch, G5_vminfo, O1_scratch); | |
| 661 Label zero_extend, done; | |
| 662 __ btst(CONV_VMINFO_SIGN_FLAG, G5_vminfo); | |
| 663 __ br(Assembler::zero, false, Assembler::pn, zero_extend); | |
| 664 __ delayed()->nop(); | |
| 665 | |
| 666 // this path is taken for int->byte, int->short | |
| 667 __ sra(O1_scratch, G5_vminfo, O1_scratch); | |
| 668 __ ba(false, done); | |
| 669 __ delayed()->nop(); | |
| 670 | |
| 671 __ bind(zero_extend); | |
| 672 // this is taken for int->char | |
| 673 __ srl(O1_scratch, G5_vminfo, O1_scratch); | |
| 674 | |
| 675 __ bind(done); | |
| 676 __ st(O1_scratch, vmarg); | |
| 677 | |
| 678 // Get the new MH: | |
| 679 __ ld_ptr(G3_mh_vmtarget, G3_method_handle); | |
| 680 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); | |
| 681 } | |
| 682 break; | |
| 683 | |
| 684 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim | |
| 685 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim | |
| 686 { | |
| 687 // Perform an in-place int-to-long or ref-to-long conversion. | |
| 688 __ ldsw(G3_amh_vmargslot, O0_argslot); | |
| 689 | |
| 690 // On big-endian machine we duplicate the slot and store the MSW | |
| 691 // in the first slot. | |
| 692 __ add(Gargs, __ argument_offset(O0_argslot, 1), O0_argslot); | |
| 693 | |
| 694 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, O0_argslot, O1_scratch, O2_scratch, G5_index); | |
| 695 | |
| 696 Address arg_lsw(O0_argslot, 0); | |
| 1506 | 697 Address arg_msw(O0_argslot, -Interpreter::stackElementSize); |
| 1503 | 698 |
| 699 switch (ek) { | |
| 700 case _adapter_opt_i2l: | |
| 701 { | |
| 702 __ ldsw(arg_lsw, O2_scratch); // Load LSW | |
| 703 #ifndef _LP64 | |
| 704 __ signx(O2_scratch, O3_scratch); // Sign extend | |
| 705 #endif | |
| 706 __ st_long(O2_scratch, arg_msw); // Uses O2/O3 on !_LP64 | |
| 707 } | |
| 708 break; | |
| 709 case _adapter_opt_unboxl: | |
| 710 { | |
| 711 // Load the value up from the heap. | |
| 712 __ ld_ptr(arg_lsw, O1_scratch); | |
| 713 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG); | |
| 714 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), ""); | |
| 715 __ null_check(O1_scratch, value_offset); | |
| 716 __ ld_long(Address(O1_scratch, value_offset), O2_scratch); // Uses O2/O3 on !_LP64 | |
| 717 __ st_long(O2_scratch, arg_msw); | |
| 718 } | |
| 719 break; | |
| 720 default: | |
| 721 ShouldNotReachHere(); | |
| 722 } | |
| 723 | |
| 724 __ ld_ptr(G3_mh_vmtarget, G3_method_handle); | |
| 725 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); | |
| 726 } | |
| 727 break; | |
| 728 | |
| 729 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim | |
| 730 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim | |
| 731 { | |
| 732 // perform an in-place floating primitive conversion | |
| 733 __ unimplemented(entry_name(ek)); | |
| 734 } | |
| 735 break; | |
| 736 | |
| 737 case _adapter_prim_to_ref: | |
| 738 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 739 break; | |
| 740 | |
| 741 case _adapter_swap_args: | |
| 742 case _adapter_rot_args: | |
| 743 // handled completely by optimized cases | |
| 744 __ stop("init_AdapterMethodHandle should not issue this"); | |
| 745 break; | |
| 746 | |
| 747 case _adapter_opt_swap_1: | |
| 748 case _adapter_opt_swap_2: | |
| 749 case _adapter_opt_rot_1_up: | |
| 750 case _adapter_opt_rot_1_down: | |
| 751 case _adapter_opt_rot_2_up: | |
| 752 case _adapter_opt_rot_2_down: | |
| 753 { | |
| 754 int swap_bytes = 0, rotate = 0; | |
| 755 get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate); | |
| 756 | |
| 757 // 'argslot' is the position of the first argument to swap. | |
| 758 __ ldsw(G3_amh_vmargslot, O0_argslot); | |
| 759 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); | |
| 760 | |
| 761 // 'vminfo' is the second. | |
| 762 Register O1_destslot = O1_scratch; | |
| 763 __ ldsw(G3_amh_conversion, O1_destslot); | |
| 764 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
| 765 __ and3(O1_destslot, CONV_VMINFO_MASK, O1_destslot); | |
| 766 __ add(Gargs, __ argument_offset(O1_destslot), O1_destslot); | |
| 767 | |
| 768 if (!rotate) { | |
| 769 for (int i = 0; i < swap_bytes; i += wordSize) { | |
| 770 __ ld_ptr(Address(O0_argslot, i), O2_scratch); | |
| 771 __ ld_ptr(Address(O1_destslot, i), O3_scratch); | |
| 772 __ st_ptr(O3_scratch, Address(O0_argslot, i)); | |
| 773 __ st_ptr(O2_scratch, Address(O1_destslot, i)); | |
| 774 } | |
| 775 } else { | |
| 776 // Save the first chunk, which is going to get overwritten. | |
| 777 switch (swap_bytes) { | |
| 778 case 4 : __ lduw(Address(O0_argslot, 0), O2_scratch); break; | |
| 779 case 16: __ ldx( Address(O0_argslot, 8), O3_scratch); //fall-thru | |
| 780 case 8 : __ ldx( Address(O0_argslot, 0), O2_scratch); break; | |
| 781 default: ShouldNotReachHere(); | |
| 782 } | |
| 783 | |
| 784 if (rotate > 0) { | |
| 785 // Rorate upward. | |
| 786 __ sub(O0_argslot, swap_bytes, O0_argslot); | |
| 787 #if ASSERT | |
| 788 { | |
| 789 // Verify that argslot > destslot, by at least swap_bytes. | |
| 790 Label L_ok; | |
| 791 __ cmp(O0_argslot, O1_destslot); | |
| 792 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, L_ok); | |
| 793 __ delayed()->nop(); | |
| 794 __ stop("source must be above destination (upward rotation)"); | |
| 795 __ bind(L_ok); | |
| 796 } | |
| 797 #endif | |
| 798 // Work argslot down to destslot, copying contiguous data upwards. | |
| 799 // Pseudo-code: | |
| 800 // argslot = src_addr - swap_bytes | |
| 801 // destslot = dest_addr | |
| 802 // while (argslot >= destslot) { | |
| 803 // *(argslot + swap_bytes) = *(argslot + 0); | |
| 804 // argslot--; | |
| 805 // } | |
| 806 Label loop; | |
| 807 __ bind(loop); | |
| 808 __ ld_ptr(Address(O0_argslot, 0), G5_index); | |
| 809 __ st_ptr(G5_index, Address(O0_argslot, swap_bytes)); | |
| 810 __ sub(O0_argslot, wordSize, O0_argslot); | |
| 811 __ cmp(O0_argslot, O1_destslot); | |
| 812 __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, loop); | |
| 813 __ delayed()->nop(); // FILLME | |
| 814 } else { | |
| 815 __ add(O0_argslot, swap_bytes, O0_argslot); | |
| 816 #if ASSERT | |
| 817 { | |
| 818 // Verify that argslot < destslot, by at least swap_bytes. | |
| 819 Label L_ok; | |
| 820 __ cmp(O0_argslot, O1_destslot); | |
| 821 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok); | |
| 822 __ delayed()->nop(); | |
| 823 __ stop("source must be above destination (upward rotation)"); | |
| 824 __ bind(L_ok); | |
| 825 } | |
| 826 #endif | |
| 827 // Work argslot up to destslot, copying contiguous data downwards. | |
| 828 // Pseudo-code: | |
| 829 // argslot = src_addr + swap_bytes | |
| 830 // destslot = dest_addr | |
| 831 // while (argslot >= destslot) { | |
| 832 // *(argslot - swap_bytes) = *(argslot + 0); | |
| 833 // argslot++; | |
| 834 // } | |
| 835 Label loop; | |
| 836 __ bind(loop); | |
| 837 __ ld_ptr(Address(O0_argslot, 0), G5_index); | |
| 838 __ st_ptr(G5_index, Address(O0_argslot, -swap_bytes)); | |
| 839 __ add(O0_argslot, wordSize, O0_argslot); | |
| 840 __ cmp(O0_argslot, O1_destslot); | |
| 841 __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, loop); | |
| 842 __ delayed()->nop(); // FILLME | |
| 843 } | |
| 844 | |
| 845 // Store the original first chunk into the destination slot, now free. | |
| 846 switch (swap_bytes) { | |
| 847 case 4 : __ stw(O2_scratch, Address(O1_destslot, 0)); break; | |
| 848 case 16: __ stx(O3_scratch, Address(O1_destslot, 8)); // fall-thru | |
| 849 case 8 : __ stx(O2_scratch, Address(O1_destslot, 0)); break; | |
| 850 default: ShouldNotReachHere(); | |
| 851 } | |
| 852 } | |
| 853 | |
| 854 __ ld_ptr(G3_mh_vmtarget, G3_method_handle); | |
| 855 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); | |
| 856 } | |
| 857 break; | |
| 858 | |
| 859 case _adapter_dup_args: | |
| 860 { | |
| 861 // 'argslot' is the position of the first argument to duplicate. | |
| 862 __ ldsw(G3_amh_vmargslot, O0_argslot); | |
| 863 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); | |
| 864 | |
| 865 // 'stack_move' is negative number of words to duplicate. | |
| 866 Register G5_stack_move = G5_index; | |
| 867 __ ldsw(G3_amh_conversion, G5_stack_move); | |
| 868 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move); | |
| 869 | |
| 870 // Remember the old Gargs (argslot[0]). | |
| 871 Register O1_oldarg = O1_scratch; | |
| 872 __ mov(Gargs, O1_oldarg); | |
| 873 | |
| 874 // Move Gargs down to make room for dups. | |
| 875 __ sll_ptr(G5_stack_move, LogBytesPerWord, G5_stack_move); | |
| 876 __ add(Gargs, G5_stack_move, Gargs); | |
| 877 | |
| 878 // Compute the new Gargs (argslot[0]). | |
| 879 Register O2_newarg = O2_scratch; | |
| 880 __ mov(Gargs, O2_newarg); | |
| 881 | |
| 882 // Copy from oldarg[0...] down to newarg[0...] | |
| 883 // Pseude-code: | |
| 884 // O1_oldarg = old-Gargs | |
| 885 // O2_newarg = new-Gargs | |
| 886 // O0_argslot = argslot | |
| 887 // while (O2_newarg < O1_oldarg) *O2_newarg = *O0_argslot++ | |
| 888 Label loop; | |
| 889 __ bind(loop); | |
| 890 __ ld_ptr(Address(O0_argslot, 0), O3_scratch); | |
| 891 __ st_ptr(O3_scratch, Address(O2_newarg, 0)); | |
| 892 __ add(O0_argslot, wordSize, O0_argslot); | |
| 893 __ add(O2_newarg, wordSize, O2_newarg); | |
| 894 __ cmp(O2_newarg, O1_oldarg); | |
| 895 __ brx(Assembler::less, false, Assembler::pt, loop); | |
| 896 __ delayed()->nop(); // FILLME | |
| 897 | |
| 898 __ ld_ptr(G3_mh_vmtarget, G3_method_handle); | |
| 899 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); | |
| 900 } | |
| 901 break; | |
| 902 | |
| 903 case _adapter_drop_args: | |
| 904 { | |
| 905 // 'argslot' is the position of the first argument to nuke. | |
| 906 __ ldsw(G3_amh_vmargslot, O0_argslot); | |
| 907 __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot); | |
| 908 | |
| 909 // 'stack_move' is number of words to drop. | |
| 910 Register G5_stack_move = G5_index; | |
| 911 __ ldsw(G3_amh_conversion, G5_stack_move); | |
| 912 __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move); | |
| 913 | |
| 914 remove_arg_slots(_masm, G5_stack_move, O0_argslot, O1_scratch, O2_scratch, O3_scratch); | |
| 915 | |
| 916 __ ld_ptr(G3_mh_vmtarget, G3_method_handle); | |
| 917 __ jump_to_method_handle_entry(G3_method_handle, O1_scratch); | |
| 918 } | |
| 919 break; | |
| 920 | |
| 921 case _adapter_collect_args: | |
| 922 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 923 break; | |
| 924 | |
| 925 case _adapter_spread_args: | |
| 926 // Handled completely by optimized cases. | |
| 927 __ stop("init_AdapterMethodHandle should not issue this"); | |
| 928 break; | |
| 929 | |
| 930 case _adapter_opt_spread_0: | |
| 931 case _adapter_opt_spread_1: | |
| 932 case _adapter_opt_spread_more: | |
| 933 { | |
| 934 // spread an array out into a group of arguments | |
| 935 __ unimplemented(entry_name(ek)); | |
| 936 } | |
| 937 break; | |
| 938 | |
| 939 case _adapter_flyby: | |
| 940 case _adapter_ricochet: | |
| 941 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 942 break; | |
| 943 | |
| 944 default: | |
| 945 ShouldNotReachHere(); | |
| 946 } | |
| 947 | |
| 948 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry); | |
| 949 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 950 | |
| 951 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie)); | |
| 710 | 952 } |