Mercurial > hg > graal-compiler
annotate src/cpu/x86/vm/methodHandles_x86.cpp @ 1304:76c1d7d13ec5
6932091: JSR 292 x86 code cleanup
Summary: Some code cleanups found during the JSR 292 SPARC port.
Reviewed-by: kvn, never
| author | twisti |
|---|---|
| date | Thu, 18 Mar 2010 09:56:51 +0100 |
| parents | 51db1e4b379d |
| children | 4a9cc99938e3 |
| rev | line source |
|---|---|
| 710 | 1 /* |
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2 * Copyright 1997-2010 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_x86.cpp.incl" | |
| 27 | |
| 28 #define __ _masm-> | |
| 29 | |
| 30 address MethodHandleEntry::start_compiled_entry(MacroAssembler* _masm, | |
| 31 address interpreted_entry) { | |
| 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. | |
| 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 #ifdef ASSERT | |
| 1304 | 63 static void verify_argslot(MacroAssembler* _masm, Register argslot_reg, |
| 710 | 64 const char* error_message) { |
| 65 // Verify that argslot lies within (rsp, rbp]. | |
| 66 Label L_ok, L_bad; | |
| 1304 | 67 __ cmpptr(argslot_reg, rbp); |
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68 __ jccb(Assembler::above, L_bad); |
| 1304 | 69 __ cmpptr(rsp, argslot_reg); |
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70 __ jccb(Assembler::below, L_ok); |
| 710 | 71 __ bind(L_bad); |
| 72 __ stop(error_message); | |
| 73 __ bind(L_ok); | |
| 74 } | |
| 75 #endif | |
| 76 | |
| 77 | |
| 78 // Code generation | |
| 79 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) { | |
| 80 // rbx: methodOop | |
| 81 // rcx: receiver method handle (must load from sp[MethodTypeForm.vmslots]) | |
| 82 // rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) | |
| 83 // rdx: garbage temp, blown away | |
| 84 | |
| 85 Register rbx_method = rbx; | |
| 86 Register rcx_recv = rcx; | |
| 87 Register rax_mtype = rax; | |
| 88 Register rdx_temp = rdx; | |
| 89 | |
| 90 // emit WrongMethodType path first, to enable jccb back-branch from main path | |
| 91 Label wrong_method_type; | |
| 92 __ bind(wrong_method_type); | |
| 93 __ push(rax_mtype); // required mtype | |
| 94 __ push(rcx_recv); // bad mh (1st stacked argument) | |
| 95 __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry())); | |
| 96 | |
| 97 // here's where control starts out: | |
| 98 __ align(CodeEntryAlignment); | |
| 99 address entry_point = __ pc(); | |
| 100 | |
| 101 // fetch the MethodType from the method handle into rax (the 'check' register) | |
| 102 { | |
| 103 Register tem = rbx_method; | |
| 104 for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) { | |
| 105 __ movptr(rax_mtype, Address(tem, *pchase)); | |
| 106 tem = rax_mtype; // in case there is another indirection | |
| 107 } | |
| 108 } | |
| 109 Register rbx_temp = rbx_method; // done with incoming methodOop | |
| 110 | |
| 111 // given the MethodType, find out where the MH argument is buried | |
| 112 __ movptr(rdx_temp, Address(rax_mtype, | |
| 113 __ delayed_value(java_dyn_MethodType::form_offset_in_bytes, rbx_temp))); | |
| 114 __ movl(rdx_temp, Address(rdx_temp, | |
| 115 __ delayed_value(java_dyn_MethodTypeForm::vmslots_offset_in_bytes, rbx_temp))); | |
| 116 __ movptr(rcx_recv, __ argument_address(rdx_temp)); | |
| 117 | |
| 118 __ check_method_handle_type(rax_mtype, rcx_recv, rdx_temp, wrong_method_type); | |
| 119 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 120 | |
| 121 return entry_point; | |
| 122 } | |
| 123 | |
| 124 // Helper to insert argument slots into the stack. | |
| 125 // arg_slots must be a multiple of stack_move_unit() and <= 0 | |
| 126 void MethodHandles::insert_arg_slots(MacroAssembler* _masm, | |
| 127 RegisterOrConstant arg_slots, | |
| 128 int arg_mask, | |
| 129 Register rax_argslot, | |
| 130 Register rbx_temp, Register rdx_temp) { | |
| 131 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, | |
| 132 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
| 133 | |
| 134 #ifdef ASSERT | |
| 135 verify_argslot(_masm, rax_argslot, "insertion point must fall within current frame"); | |
| 136 if (arg_slots.is_register()) { | |
| 137 Label L_ok, L_bad; | |
| 138 __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD); | |
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139 __ jccb(Assembler::greater, L_bad); |
| 710 | 140 __ testl(arg_slots.as_register(), -stack_move_unit() - 1); |
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141 __ jccb(Assembler::zero, L_ok); |
| 710 | 142 __ bind(L_bad); |
| 143 __ stop("assert arg_slots <= 0 and clear low bits"); | |
| 144 __ bind(L_ok); | |
| 145 } else { | |
| 146 assert(arg_slots.as_constant() <= 0, ""); | |
| 147 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
| 148 } | |
| 149 #endif //ASSERT | |
| 150 | |
| 151 #ifdef _LP64 | |
| 152 if (arg_slots.is_register()) { | |
| 153 // clean high bits of stack motion register (was loaded as an int) | |
| 154 __ movslq(arg_slots.as_register(), arg_slots.as_register()); | |
| 155 } | |
| 156 #endif | |
| 157 | |
| 158 // Make space on the stack for the inserted argument(s). | |
| 159 // Then pull down everything shallower than rax_argslot. | |
| 160 // The stacked return address gets pulled down with everything else. | |
| 161 // That is, copy [rsp, argslot) downward by -size words. In pseudo-code: | |
| 162 // rsp -= size; | |
| 163 // for (rdx = rsp + size; rdx < argslot; rdx++) | |
| 164 // rdx[-size] = rdx[0] | |
| 165 // argslot -= size; | |
| 166 __ mov(rdx_temp, rsp); // source pointer for copy | |
| 167 __ lea(rsp, Address(rsp, arg_slots, Address::times_ptr)); | |
| 168 { | |
| 169 Label loop; | |
| 170 __ bind(loop); | |
| 171 // pull one word down each time through the loop | |
| 172 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
| 173 __ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp); | |
| 174 __ addptr(rdx_temp, wordSize); | |
| 175 __ cmpptr(rdx_temp, rax_argslot); | |
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176 __ jccb(Assembler::less, loop); |
| 710 | 177 } |
| 178 | |
| 179 // Now move the argslot down, to point to the opened-up space. | |
| 180 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
| 181 } | |
| 182 | |
| 183 // Helper to remove argument slots from the stack. | |
| 184 // arg_slots must be a multiple of stack_move_unit() and >= 0 | |
| 185 void MethodHandles::remove_arg_slots(MacroAssembler* _masm, | |
| 186 RegisterOrConstant arg_slots, | |
| 187 Register rax_argslot, | |
| 188 Register rbx_temp, Register rdx_temp) { | |
| 189 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, | |
| 190 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
| 191 | |
| 192 #ifdef ASSERT | |
| 1304 | 193 // Verify that [argslot..argslot+size) lies within (rsp, rbp). |
| 194 __ lea(rbx_temp, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
| 195 verify_argslot(_masm, rbx_temp, "deleted argument(s) must fall within current frame"); | |
| 710 | 196 if (arg_slots.is_register()) { |
| 197 Label L_ok, L_bad; | |
| 198 __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD); | |
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199 __ jccb(Assembler::less, L_bad); |
| 710 | 200 __ testl(arg_slots.as_register(), -stack_move_unit() - 1); |
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201 __ jccb(Assembler::zero, L_ok); |
| 710 | 202 __ bind(L_bad); |
| 203 __ stop("assert arg_slots >= 0 and clear low bits"); | |
| 204 __ bind(L_ok); | |
| 205 } else { | |
| 206 assert(arg_slots.as_constant() >= 0, ""); | |
| 207 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
| 208 } | |
| 209 #endif //ASSERT | |
| 210 | |
| 211 #ifdef _LP64 | |
| 212 if (false) { // not needed, since register is positive | |
| 213 // clean high bits of stack motion register (was loaded as an int) | |
| 214 if (arg_slots.is_register()) | |
| 215 __ movslq(arg_slots.as_register(), arg_slots.as_register()); | |
| 216 } | |
| 217 #endif | |
| 218 | |
| 219 // Pull up everything shallower than rax_argslot. | |
| 220 // Then remove the excess space on the stack. | |
| 221 // The stacked return address gets pulled up with everything else. | |
| 222 // That is, copy [rsp, argslot) upward by size words. In pseudo-code: | |
| 223 // for (rdx = argslot-1; rdx >= rsp; --rdx) | |
| 224 // rdx[size] = rdx[0] | |
| 225 // argslot += size; | |
| 226 // rsp += size; | |
| 227 __ lea(rdx_temp, Address(rax_argslot, -wordSize)); // source pointer for copy | |
| 228 { | |
| 229 Label loop; | |
| 230 __ bind(loop); | |
| 231 // pull one word up each time through the loop | |
| 232 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
| 233 __ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp); | |
| 234 __ addptr(rdx_temp, -wordSize); | |
| 235 __ cmpptr(rdx_temp, rsp); | |
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236 __ jccb(Assembler::greaterEqual, loop); |
| 710 | 237 } |
| 238 | |
| 239 // Now move the argslot up, to point to the just-copied block. | |
| 240 __ lea(rsp, Address(rsp, arg_slots, Address::times_ptr)); | |
| 241 // And adjust the argslot address to point at the deletion point. | |
| 242 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
| 243 } | |
| 244 | |
| 245 #ifndef PRODUCT | |
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246 extern "C" void print_method_handle(oop mh); |
| 710 | 247 void trace_method_handle_stub(const char* adaptername, |
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248 oop mh, |
| 710 | 249 intptr_t* entry_sp, |
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250 intptr_t* saved_sp, |
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251 intptr_t* saved_bp) { |
| 710 | 252 // called as a leaf from native code: do not block the JVM! |
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253 intptr_t* last_sp = (intptr_t*) saved_bp[frame::interpreter_frame_last_sp_offset]; |
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254 intptr_t* base_sp = (intptr_t*) saved_bp[frame::interpreter_frame_monitor_block_top_offset]; |
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255 printf("MH %s mh="INTPTR_FORMAT" sp=("INTPTR_FORMAT"+"INTX_FORMAT") stack_size="INTX_FORMAT" bp="INTPTR_FORMAT"\n", |
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256 adaptername, (intptr_t)mh, (intptr_t)entry_sp, (intptr_t)(saved_sp - entry_sp), (intptr_t)(base_sp - last_sp), (intptr_t)saved_bp); |
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257 if (last_sp != saved_sp) |
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258 printf("*** last_sp="INTPTR_FORMAT"\n", (intptr_t)last_sp); |
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259 if (Verbose) print_method_handle(mh); |
| 710 | 260 } |
| 261 #endif //PRODUCT | |
| 262 | |
| 263 // Generate an "entry" field for a method handle. | |
| 264 // This determines how the method handle will respond to calls. | |
| 265 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) { | |
| 266 // Here is the register state during an interpreted call, | |
| 267 // as set up by generate_method_handle_interpreter_entry(): | |
| 268 // - rbx: garbage temp (was MethodHandle.invoke methodOop, unused) | |
| 269 // - rcx: receiver method handle | |
| 270 // - rax: method handle type (only used by the check_mtype entry point) | |
| 271 // - rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) | |
| 272 // - rdx: garbage temp, can blow away | |
| 273 | |
| 274 Register rcx_recv = rcx; | |
| 275 Register rax_argslot = rax; | |
| 276 Register rbx_temp = rbx; | |
| 277 Register rdx_temp = rdx; | |
| 278 | |
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279 // This guy is set up by prepare_to_jump_from_interpreted (from interpreted calls) |
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280 // and gen_c2i_adapter (from compiled calls): |
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281 Register saved_last_sp = LP64_ONLY(r13) NOT_LP64(rsi); |
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282 |
| 710 | 283 guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets"); |
| 284 | |
| 285 // some handy addresses | |
| 286 Address rbx_method_fie( rbx, methodOopDesc::from_interpreted_offset() ); | |
| 287 | |
| 288 Address rcx_mh_vmtarget( rcx_recv, java_dyn_MethodHandle::vmtarget_offset_in_bytes() ); | |
| 289 Address rcx_dmh_vmindex( rcx_recv, sun_dyn_DirectMethodHandle::vmindex_offset_in_bytes() ); | |
| 290 | |
| 291 Address rcx_bmh_vmargslot( rcx_recv, sun_dyn_BoundMethodHandle::vmargslot_offset_in_bytes() ); | |
| 292 Address rcx_bmh_argument( rcx_recv, sun_dyn_BoundMethodHandle::argument_offset_in_bytes() ); | |
| 293 | |
| 294 Address rcx_amh_vmargslot( rcx_recv, sun_dyn_AdapterMethodHandle::vmargslot_offset_in_bytes() ); | |
| 295 Address rcx_amh_argument( rcx_recv, sun_dyn_AdapterMethodHandle::argument_offset_in_bytes() ); | |
| 296 Address rcx_amh_conversion( rcx_recv, sun_dyn_AdapterMethodHandle::conversion_offset_in_bytes() ); | |
| 297 Address vmarg; // __ argument_address(vmargslot) | |
| 298 | |
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299 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); |
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300 |
| 710 | 301 if (have_entry(ek)) { |
| 302 __ nop(); // empty stubs make SG sick | |
| 303 return; | |
| 304 } | |
| 305 | |
| 306 address interp_entry = __ pc(); | |
| 307 if (UseCompressedOops) __ unimplemented("UseCompressedOops"); | |
| 308 | |
| 309 #ifndef PRODUCT | |
| 310 if (TraceMethodHandles) { | |
| 311 __ push(rax); __ push(rbx); __ push(rcx); __ push(rdx); __ push(rsi); __ push(rdi); | |
| 312 __ lea(rax, Address(rsp, wordSize*6)); // entry_sp | |
| 313 // arguments: | |
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314 __ push(rbp); // interpreter frame pointer |
| 710 | 315 __ push(rsi); // saved_sp |
| 316 __ push(rax); // entry_sp | |
| 317 __ push(rcx); // mh | |
| 318 __ push(rcx); | |
| 319 __ movptr(Address(rsp, 0), (intptr_t)entry_name(ek)); | |
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320 __ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub), 5); |
| 710 | 321 __ pop(rdi); __ pop(rsi); __ pop(rdx); __ pop(rcx); __ pop(rbx); __ pop(rax); |
| 322 } | |
| 323 #endif //PRODUCT | |
| 324 | |
| 325 switch ((int) ek) { | |
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326 case _raise_exception: |
| 710 | 327 { |
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328 // Not a real MH entry, but rather shared code for raising an exception. |
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329 // Extra local arguments are pushed on stack, as required type at TOS+8, |
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330 // failing object (or NULL) at TOS+4, failing bytecode type at TOS. |
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331 // Beyond those local arguments are the PC, of course. |
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332 Register rdx_code = rdx_temp; |
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333 Register rcx_fail = rcx_recv; |
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334 Register rax_want = rax_argslot; |
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335 Register rdi_pc = rdi; |
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336 __ pop(rdx_code); // TOS+0 |
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337 __ pop(rcx_fail); // TOS+4 |
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338 __ pop(rax_want); // TOS+8 |
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339 __ pop(rdi_pc); // caller PC |
| 710 | 340 |
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341 __ mov(rsp, rsi); // cut the stack back to where the caller started |
| 710 | 342 |
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343 // Repush the arguments as if coming from the interpreter. |
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344 __ push(rdx_code); |
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345 __ push(rcx_fail); |
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346 __ push(rax_want); |
| 710 | 347 |
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348 Register rbx_method = rbx_temp; |
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349 Label no_method; |
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350 // FIXME: fill in _raise_exception_method with a suitable sun.dyn method |
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351 __ movptr(rbx_method, ExternalAddress((address) &_raise_exception_method)); |
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352 __ testptr(rbx_method, rbx_method); |
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353 __ jccb(Assembler::zero, no_method); |
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354 int jobject_oop_offset = 0; |
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355 __ movptr(rbx_method, Address(rbx_method, jobject_oop_offset)); // dereference the jobject |
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356 __ testptr(rbx_method, rbx_method); |
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357 __ jccb(Assembler::zero, no_method); |
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358 __ verify_oop(rbx_method); |
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359 __ push(rdi_pc); // and restore caller PC |
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360 __ jmp(rbx_method_fie); |
| 710 | 361 |
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362 // If we get here, the Java runtime did not do its job of creating the exception. |
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363 // Do something that is at least causes a valid throw from the interpreter. |
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364 __ bind(no_method); |
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365 __ pop(rax_want); |
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366 __ pop(rcx_fail); |
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367 __ push(rax_want); |
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368 __ push(rcx_fail); |
| 710 | 369 __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry())); |
| 370 } | |
| 371 break; | |
| 372 | |
| 373 case _invokestatic_mh: | |
| 374 case _invokespecial_mh: | |
| 375 { | |
| 376 Register rbx_method = rbx_temp; | |
| 377 __ movptr(rbx_method, rcx_mh_vmtarget); // target is a methodOop | |
| 378 __ verify_oop(rbx_method); | |
| 379 // same as TemplateTable::invokestatic or invokespecial, | |
| 380 // minus the CP setup and profiling: | |
| 381 if (ek == _invokespecial_mh) { | |
| 382 // Must load & check the first argument before entering the target method. | |
| 383 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
| 384 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
| 385 __ null_check(rcx_recv); | |
| 386 __ verify_oop(rcx_recv); | |
| 387 } | |
| 388 __ jmp(rbx_method_fie); | |
| 389 } | |
| 390 break; | |
| 391 | |
| 392 case _invokevirtual_mh: | |
| 393 { | |
| 394 // same as TemplateTable::invokevirtual, | |
| 395 // minus the CP setup and profiling: | |
| 396 | |
| 397 // pick out the vtable index and receiver offset from the MH, | |
| 398 // and then we can discard it: | |
| 399 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
| 400 Register rbx_index = rbx_temp; | |
| 401 __ movl(rbx_index, rcx_dmh_vmindex); | |
| 402 // Note: The verifier allows us to ignore rcx_mh_vmtarget. | |
| 403 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
| 404 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
| 405 | |
| 406 // get receiver klass | |
| 407 Register rax_klass = rax_argslot; | |
| 408 __ load_klass(rax_klass, rcx_recv); | |
| 409 __ verify_oop(rax_klass); | |
| 410 | |
| 411 // get target methodOop & entry point | |
| 412 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
| 413 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); | |
| 414 Address vtable_entry_addr(rax_klass, | |
| 415 rbx_index, Address::times_ptr, | |
| 416 base + vtableEntry::method_offset_in_bytes()); | |
| 417 Register rbx_method = rbx_temp; | |
| 1108 | 418 __ movptr(rbx_method, vtable_entry_addr); |
| 710 | 419 |
| 420 __ verify_oop(rbx_method); | |
| 421 __ jmp(rbx_method_fie); | |
| 422 } | |
| 423 break; | |
| 424 | |
| 425 case _invokeinterface_mh: | |
| 426 { | |
| 427 // same as TemplateTable::invokeinterface, | |
| 428 // minus the CP setup and profiling: | |
| 429 | |
| 430 // pick out the interface and itable index from the MH. | |
| 431 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
| 432 Register rdx_intf = rdx_temp; | |
| 433 Register rbx_index = rbx_temp; | |
| 434 __ movptr(rdx_intf, rcx_mh_vmtarget); | |
| 435 __ movl(rbx_index, rcx_dmh_vmindex); | |
| 436 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
| 437 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
| 438 | |
| 439 // get receiver klass | |
| 440 Register rax_klass = rax_argslot; | |
| 441 __ load_klass(rax_klass, rcx_recv); | |
| 442 __ verify_oop(rax_klass); | |
| 443 | |
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444 Register rdi_temp = rdi; |
| 710 | 445 Register rbx_method = rbx_index; |
| 446 | |
| 447 // get interface klass | |
| 448 Label no_such_interface; | |
| 449 __ verify_oop(rdx_intf); | |
| 450 __ lookup_interface_method(rax_klass, rdx_intf, | |
| 451 // note: next two args must be the same: | |
| 452 rbx_index, rbx_method, | |
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453 rdi_temp, |
| 710 | 454 no_such_interface); |
| 455 | |
| 456 __ verify_oop(rbx_method); | |
| 457 __ jmp(rbx_method_fie); | |
| 458 __ hlt(); | |
| 459 | |
| 460 __ bind(no_such_interface); | |
| 461 // Throw an exception. | |
| 462 // For historical reasons, it will be IncompatibleClassChangeError. | |
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463 __ pushptr(Address(rdx_intf, java_mirror_offset)); // required interface |
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464 __ push(rcx_recv); // bad receiver |
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465 __ push((int)Bytecodes::_invokeinterface); // who is complaining? |
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466 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
| 710 | 467 } |
| 468 break; | |
| 469 | |
| 470 case _bound_ref_mh: | |
| 471 case _bound_int_mh: | |
| 472 case _bound_long_mh: | |
| 473 case _bound_ref_direct_mh: | |
| 474 case _bound_int_direct_mh: | |
| 475 case _bound_long_direct_mh: | |
| 476 { | |
| 477 bool direct_to_method = (ek >= _bound_ref_direct_mh); | |
| 1304 | 478 BasicType arg_type = T_ILLEGAL; |
| 479 int arg_mask = _INSERT_NO_MASK; | |
| 480 int arg_slots = -1; | |
| 481 get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots); | |
| 710 | 482 |
| 483 // make room for the new argument: | |
| 484 __ movl(rax_argslot, rcx_bmh_vmargslot); | |
| 485 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 486 insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, | |
| 487 rax_argslot, rbx_temp, rdx_temp); | |
| 488 | |
| 489 // store bound argument into the new stack slot: | |
| 490 __ movptr(rbx_temp, rcx_bmh_argument); | |
| 491 Address prim_value_addr(rbx_temp, java_lang_boxing_object::value_offset_in_bytes(arg_type)); | |
| 492 if (arg_type == T_OBJECT) { | |
| 493 __ movptr(Address(rax_argslot, 0), rbx_temp); | |
| 494 } else { | |
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495 __ load_sized_value(rdx_temp, prim_value_addr, |
| 710 | 496 type2aelembytes(arg_type), is_signed_subword_type(arg_type)); |
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497 __ movptr(Address(rax_argslot, 0), rdx_temp); |
| 710 | 498 #ifndef _LP64 |
| 499 if (arg_slots == 2) { | |
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500 __ movl(rdx_temp, prim_value_addr.plus_disp(wordSize)); |
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501 __ movl(Address(rax_argslot, Interpreter::stackElementSize()), rdx_temp); |
| 710 | 502 } |
| 503 #endif //_LP64 | |
| 504 } | |
| 505 | |
| 506 if (direct_to_method) { | |
| 507 Register rbx_method = rbx_temp; | |
| 508 __ movptr(rbx_method, rcx_mh_vmtarget); | |
| 509 __ verify_oop(rbx_method); | |
| 510 __ jmp(rbx_method_fie); | |
| 511 } else { | |
| 512 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
| 513 __ verify_oop(rcx_recv); | |
| 514 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 515 } | |
| 516 } | |
| 517 break; | |
| 518 | |
| 519 case _adapter_retype_only: | |
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520 case _adapter_retype_raw: |
| 710 | 521 // immediately jump to the next MH layer: |
| 522 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
| 523 __ verify_oop(rcx_recv); | |
| 524 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 525 // This is OK when all parameter types widen. | |
| 526 // It is also OK when a return type narrows. | |
| 527 break; | |
| 528 | |
| 529 case _adapter_check_cast: | |
| 530 { | |
| 531 // temps: | |
| 532 Register rbx_klass = rbx_temp; // interesting AMH data | |
| 533 | |
| 534 // check a reference argument before jumping to the next layer of MH: | |
| 535 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 536 vmarg = __ argument_address(rax_argslot); | |
| 537 | |
| 538 // What class are we casting to? | |
| 539 __ movptr(rbx_klass, rcx_amh_argument); // this is a Class object! | |
| 540 __ movptr(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes())); | |
| 541 | |
| 542 Label done; | |
| 543 __ movptr(rdx_temp, vmarg); | |
| 1277 | 544 __ testptr(rdx_temp, rdx_temp); |
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545 __ jccb(Assembler::zero, done); // no cast if null |
| 710 | 546 __ load_klass(rdx_temp, rdx_temp); |
| 547 | |
| 548 // live at this point: | |
| 549 // - rbx_klass: klass required by the target method | |
| 550 // - rdx_temp: argument klass to test | |
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551 // - rcx_recv: adapter method handle |
| 710 | 552 __ check_klass_subtype(rdx_temp, rbx_klass, rax_argslot, done); |
| 553 | |
| 554 // If we get here, the type check failed! | |
| 555 // Call the wrong_method_type stub, passing the failing argument type in rax. | |
| 556 Register rax_mtype = rax_argslot; | |
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557 __ movl(rax_argslot, rcx_amh_vmargslot); // reload argslot field |
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558 __ movptr(rdx_temp, vmarg); |
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559 |
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560 __ pushptr(rcx_amh_argument); // required class |
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561 __ push(rdx_temp); // bad object |
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562 __ push((int)Bytecodes::_checkcast); // who is complaining? |
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563 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
| 710 | 564 |
| 565 __ bind(done); | |
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566 // get the new MH: |
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567 __ movptr(rcx_recv, rcx_mh_vmtarget); |
| 710 | 568 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
| 569 } | |
| 570 break; | |
| 571 | |
| 572 case _adapter_prim_to_prim: | |
| 573 case _adapter_ref_to_prim: | |
| 574 // handled completely by optimized cases | |
| 575 __ stop("init_AdapterMethodHandle should not issue this"); | |
| 576 break; | |
| 577 | |
| 578 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim | |
| 579 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim | |
| 580 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim | |
| 581 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim | |
| 582 { | |
| 583 // perform an in-place conversion to int or an int subword | |
| 584 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 585 vmarg = __ argument_address(rax_argslot); | |
| 586 | |
| 587 switch (ek) { | |
| 588 case _adapter_opt_i2i: | |
| 589 __ movl(rdx_temp, vmarg); | |
| 590 break; | |
| 591 case _adapter_opt_l2i: | |
| 592 { | |
| 593 // just delete the extra slot; on a little-endian machine we keep the first | |
| 594 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
| 595 remove_arg_slots(_masm, -stack_move_unit(), | |
| 596 rax_argslot, rbx_temp, rdx_temp); | |
| 597 vmarg = Address(rax_argslot, -Interpreter::stackElementSize()); | |
| 598 __ movl(rdx_temp, vmarg); | |
| 599 } | |
| 600 break; | |
| 601 case _adapter_opt_unboxi: | |
| 602 { | |
| 603 // Load the value up from the heap. | |
| 604 __ movptr(rdx_temp, vmarg); | |
| 605 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT); | |
| 606 #ifdef ASSERT | |
| 607 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { | |
| 608 if (is_subword_type(BasicType(bt))) | |
| 609 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), ""); | |
| 610 } | |
| 611 #endif | |
| 612 __ null_check(rdx_temp, value_offset); | |
| 613 __ movl(rdx_temp, Address(rdx_temp, value_offset)); | |
| 614 // We load this as a word. Because we are little-endian, | |
| 615 // the low bits will be correct, but the high bits may need cleaning. | |
| 616 // The vminfo will guide us to clean those bits. | |
| 617 } | |
| 618 break; | |
| 619 default: | |
| 1304 | 620 ShouldNotReachHere(); |
| 710 | 621 } |
| 622 | |
| 1304 | 623 // Do the requested conversion and store the value. |
| 710 | 624 Register rbx_vminfo = rbx_temp; |
| 625 __ movl(rbx_vminfo, rcx_amh_conversion); | |
| 626 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
| 627 | |
| 628 // get the new MH: | |
| 629 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
| 630 // (now we are done with the old MH) | |
| 631 | |
| 632 // original 32-bit vmdata word must be of this form: | |
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633 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 | |
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634 __ xchgptr(rcx, rbx_vminfo); // free rcx for shifts |
| 710 | 635 __ shll(rdx_temp /*, rcx*/); |
| 636 Label zero_extend, done; | |
| 637 __ testl(rcx, CONV_VMINFO_SIGN_FLAG); | |
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638 __ jccb(Assembler::zero, zero_extend); |
| 710 | 639 |
| 640 // this path is taken for int->byte, int->short | |
| 641 __ sarl(rdx_temp /*, rcx*/); | |
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642 __ jmpb(done); |
| 710 | 643 |
| 644 __ bind(zero_extend); | |
| 645 // this is taken for int->char | |
| 646 __ shrl(rdx_temp /*, rcx*/); | |
| 647 | |
| 648 __ bind(done); | |
| 1304 | 649 __ movl(vmarg, rdx_temp); // Store the value. |
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650 __ xchgptr(rcx, rbx_vminfo); // restore rcx_recv |
| 710 | 651 |
| 652 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 653 } | |
| 654 break; | |
| 655 | |
| 656 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim | |
| 657 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim | |
| 658 { | |
| 659 // perform an in-place int-to-long or ref-to-long conversion | |
| 660 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 661 | |
| 662 // on a little-endian machine we keep the first slot and add another after | |
| 663 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
| 664 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, | |
| 665 rax_argslot, rbx_temp, rdx_temp); | |
| 666 Address vmarg1(rax_argslot, -Interpreter::stackElementSize()); | |
| 667 Address vmarg2 = vmarg1.plus_disp(Interpreter::stackElementSize()); | |
| 668 | |
| 669 switch (ek) { | |
| 670 case _adapter_opt_i2l: | |
| 671 { | |
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672 #ifdef _LP64 |
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673 __ movslq(rdx_temp, vmarg1); // Load sign-extended |
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674 __ movq(vmarg1, rdx_temp); // Store into first slot |
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675 #else |
| 710 | 676 __ movl(rdx_temp, vmarg1); |
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677 __ sarl(rdx_temp, BitsPerInt - 1); // __ extend_sign() |
| 710 | 678 __ movl(vmarg2, rdx_temp); // store second word |
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679 #endif |
| 710 | 680 } |
| 681 break; | |
| 682 case _adapter_opt_unboxl: | |
| 683 { | |
| 684 // Load the value up from the heap. | |
| 685 __ movptr(rdx_temp, vmarg1); | |
| 686 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG); | |
| 687 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), ""); | |
| 688 __ null_check(rdx_temp, value_offset); | |
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689 #ifdef _LP64 |
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690 __ movq(rbx_temp, Address(rdx_temp, value_offset)); |
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691 __ movq(vmarg1, rbx_temp); |
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692 #else |
| 710 | 693 __ movl(rbx_temp, Address(rdx_temp, value_offset + 0*BytesPerInt)); |
| 694 __ movl(rdx_temp, Address(rdx_temp, value_offset + 1*BytesPerInt)); | |
| 695 __ movl(vmarg1, rbx_temp); | |
| 696 __ movl(vmarg2, rdx_temp); | |
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697 #endif |
| 710 | 698 } |
| 699 break; | |
| 700 default: | |
| 1304 | 701 ShouldNotReachHere(); |
| 710 | 702 } |
| 703 | |
| 704 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
| 705 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 706 } | |
| 707 break; | |
| 708 | |
| 709 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim | |
| 710 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim | |
| 711 { | |
| 712 // perform an in-place floating primitive conversion | |
| 713 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 714 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
| 715 if (ek == _adapter_opt_f2d) { | |
| 716 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, | |
| 717 rax_argslot, rbx_temp, rdx_temp); | |
| 718 } | |
| 719 Address vmarg(rax_argslot, -Interpreter::stackElementSize()); | |
| 720 | |
| 721 #ifdef _LP64 | |
| 722 if (ek == _adapter_opt_f2d) { | |
| 723 __ movflt(xmm0, vmarg); | |
| 724 __ cvtss2sd(xmm0, xmm0); | |
| 725 __ movdbl(vmarg, xmm0); | |
| 726 } else { | |
| 727 __ movdbl(xmm0, vmarg); | |
| 728 __ cvtsd2ss(xmm0, xmm0); | |
| 729 __ movflt(vmarg, xmm0); | |
| 730 } | |
| 731 #else //_LP64 | |
| 732 if (ek == _adapter_opt_f2d) { | |
| 733 __ fld_s(vmarg); // load float to ST0 | |
| 734 __ fstp_s(vmarg); // store single | |
| 1304 | 735 } else { |
| 710 | 736 __ fld_d(vmarg); // load double to ST0 |
| 737 __ fstp_s(vmarg); // store single | |
| 738 } | |
| 739 #endif //_LP64 | |
| 740 | |
| 741 if (ek == _adapter_opt_d2f) { | |
| 742 remove_arg_slots(_masm, -stack_move_unit(), | |
| 743 rax_argslot, rbx_temp, rdx_temp); | |
| 744 } | |
| 745 | |
| 746 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
| 747 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 748 } | |
| 749 break; | |
| 750 | |
| 751 case _adapter_prim_to_ref: | |
| 752 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 753 break; | |
| 754 | |
| 755 case _adapter_swap_args: | |
| 756 case _adapter_rot_args: | |
| 757 // handled completely by optimized cases | |
| 758 __ stop("init_AdapterMethodHandle should not issue this"); | |
| 759 break; | |
| 760 | |
| 761 case _adapter_opt_swap_1: | |
| 762 case _adapter_opt_swap_2: | |
| 763 case _adapter_opt_rot_1_up: | |
| 764 case _adapter_opt_rot_1_down: | |
| 765 case _adapter_opt_rot_2_up: | |
| 766 case _adapter_opt_rot_2_down: | |
| 767 { | |
| 1304 | 768 int swap_bytes = 0, rotate = 0; |
| 769 get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate); | |
| 710 | 770 |
| 771 // 'argslot' is the position of the first argument to swap | |
| 772 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 773 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 774 | |
| 775 // 'vminfo' is the second | |
| 776 Register rbx_destslot = rbx_temp; | |
| 777 __ movl(rbx_destslot, rcx_amh_conversion); | |
| 778 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
| 779 __ andl(rbx_destslot, CONV_VMINFO_MASK); | |
| 780 __ lea(rbx_destslot, __ argument_address(rbx_destslot)); | |
| 781 DEBUG_ONLY(verify_argslot(_masm, rbx_destslot, "swap point must fall within current frame")); | |
| 782 | |
| 783 if (!rotate) { | |
| 784 for (int i = 0; i < swap_bytes; i += wordSize) { | |
| 785 __ movptr(rdx_temp, Address(rax_argslot , i)); | |
| 786 __ push(rdx_temp); | |
| 787 __ movptr(rdx_temp, Address(rbx_destslot, i)); | |
| 788 __ movptr(Address(rax_argslot, i), rdx_temp); | |
| 789 __ pop(rdx_temp); | |
| 790 __ movptr(Address(rbx_destslot, i), rdx_temp); | |
| 791 } | |
| 792 } else { | |
| 793 // push the first chunk, which is going to get overwritten | |
| 794 for (int i = swap_bytes; (i -= wordSize) >= 0; ) { | |
| 795 __ movptr(rdx_temp, Address(rax_argslot, i)); | |
| 796 __ push(rdx_temp); | |
| 797 } | |
| 798 | |
| 799 if (rotate > 0) { | |
| 800 // rotate upward | |
| 801 __ subptr(rax_argslot, swap_bytes); | |
| 802 #ifdef ASSERT | |
| 803 { | |
| 804 // Verify that argslot > destslot, by at least swap_bytes. | |
| 805 Label L_ok; | |
| 806 __ cmpptr(rax_argslot, rbx_destslot); | |
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807 __ jccb(Assembler::aboveEqual, L_ok); |
| 710 | 808 __ stop("source must be above destination (upward rotation)"); |
| 809 __ bind(L_ok); | |
| 810 } | |
| 811 #endif | |
| 812 // work argslot down to destslot, copying contiguous data upwards | |
| 813 // pseudo-code: | |
| 814 // rax = src_addr - swap_bytes | |
| 815 // rbx = dest_addr | |
| 816 // while (rax >= rbx) *(rax + swap_bytes) = *(rax + 0), rax--; | |
| 817 Label loop; | |
| 818 __ bind(loop); | |
| 819 __ movptr(rdx_temp, Address(rax_argslot, 0)); | |
| 820 __ movptr(Address(rax_argslot, swap_bytes), rdx_temp); | |
| 821 __ addptr(rax_argslot, -wordSize); | |
| 822 __ cmpptr(rax_argslot, rbx_destslot); | |
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823 __ jccb(Assembler::aboveEqual, loop); |
| 710 | 824 } else { |
| 825 __ addptr(rax_argslot, swap_bytes); | |
| 826 #ifdef ASSERT | |
| 827 { | |
| 828 // Verify that argslot < destslot, by at least swap_bytes. | |
| 829 Label L_ok; | |
| 830 __ cmpptr(rax_argslot, rbx_destslot); | |
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831 __ jccb(Assembler::belowEqual, L_ok); |
| 710 | 832 __ stop("source must be below destination (downward rotation)"); |
| 833 __ bind(L_ok); | |
| 834 } | |
| 835 #endif | |
| 836 // work argslot up to destslot, copying contiguous data downwards | |
| 837 // pseudo-code: | |
| 838 // rax = src_addr + swap_bytes | |
| 839 // rbx = dest_addr | |
| 840 // while (rax <= rbx) *(rax - swap_bytes) = *(rax + 0), rax++; | |
| 841 Label loop; | |
| 842 __ bind(loop); | |
| 843 __ movptr(rdx_temp, Address(rax_argslot, 0)); | |
| 844 __ movptr(Address(rax_argslot, -swap_bytes), rdx_temp); | |
| 845 __ addptr(rax_argslot, wordSize); | |
| 846 __ cmpptr(rax_argslot, rbx_destslot); | |
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847 __ jccb(Assembler::belowEqual, loop); |
| 710 | 848 } |
| 849 | |
| 850 // pop the original first chunk into the destination slot, now free | |
| 851 for (int i = 0; i < swap_bytes; i += wordSize) { | |
| 852 __ pop(rdx_temp); | |
| 853 __ movptr(Address(rbx_destslot, i), rdx_temp); | |
| 854 } | |
| 855 } | |
| 856 | |
| 857 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
| 858 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 859 } | |
| 860 break; | |
| 861 | |
| 862 case _adapter_dup_args: | |
| 863 { | |
| 864 // 'argslot' is the position of the first argument to duplicate | |
| 865 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 866 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 867 | |
| 868 // 'stack_move' is negative number of words to duplicate | |
| 869 Register rdx_stack_move = rdx_temp; | |
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870 __ movl2ptr(rdx_stack_move, rcx_amh_conversion); |
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871 __ sarptr(rdx_stack_move, CONV_STACK_MOVE_SHIFT); |
| 710 | 872 |
| 873 int argslot0_num = 0; | |
| 874 Address argslot0 = __ argument_address(RegisterOrConstant(argslot0_num)); | |
| 875 assert(argslot0.base() == rsp, ""); | |
| 876 int pre_arg_size = argslot0.disp(); | |
| 877 assert(pre_arg_size % wordSize == 0, ""); | |
| 878 assert(pre_arg_size > 0, "must include PC"); | |
| 879 | |
| 880 // remember the old rsp+1 (argslot[0]) | |
| 881 Register rbx_oldarg = rbx_temp; | |
| 882 __ lea(rbx_oldarg, argslot0); | |
| 883 | |
| 884 // move rsp down to make room for dups | |
| 885 __ lea(rsp, Address(rsp, rdx_stack_move, Address::times_ptr)); | |
| 886 | |
| 887 // compute the new rsp+1 (argslot[0]) | |
| 888 Register rdx_newarg = rdx_temp; | |
| 889 __ lea(rdx_newarg, argslot0); | |
| 890 | |
| 891 __ push(rdi); // need a temp | |
| 892 // (preceding push must be done after arg addresses are taken!) | |
| 893 | |
| 894 // pull down the pre_arg_size data (PC) | |
| 895 for (int i = -pre_arg_size; i < 0; i += wordSize) { | |
| 896 __ movptr(rdi, Address(rbx_oldarg, i)); | |
| 897 __ movptr(Address(rdx_newarg, i), rdi); | |
| 898 } | |
| 899 | |
| 900 // copy from rax_argslot[0...] down to new_rsp[1...] | |
| 901 // pseudo-code: | |
| 902 // rbx = old_rsp+1 | |
| 903 // rdx = new_rsp+1 | |
| 904 // rax = argslot | |
| 905 // while (rdx < rbx) *rdx++ = *rax++ | |
| 906 Label loop; | |
| 907 __ bind(loop); | |
| 908 __ movptr(rdi, Address(rax_argslot, 0)); | |
| 909 __ movptr(Address(rdx_newarg, 0), rdi); | |
| 910 __ addptr(rax_argslot, wordSize); | |
| 911 __ addptr(rdx_newarg, wordSize); | |
| 912 __ cmpptr(rdx_newarg, rbx_oldarg); | |
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913 __ jccb(Assembler::less, loop); |
| 710 | 914 |
| 915 __ pop(rdi); // restore temp | |
| 916 | |
| 917 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
| 918 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 919 } | |
| 920 break; | |
| 921 | |
| 922 case _adapter_drop_args: | |
| 923 { | |
| 924 // 'argslot' is the position of the first argument to nuke | |
| 925 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 926 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 927 | |
| 928 __ push(rdi); // need a temp | |
| 929 // (must do previous push after argslot address is taken) | |
| 930 | |
| 931 // 'stack_move' is number of words to drop | |
| 932 Register rdi_stack_move = rdi; | |
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933 __ movl2ptr(rdi_stack_move, rcx_amh_conversion); |
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934 __ sarptr(rdi_stack_move, CONV_STACK_MOVE_SHIFT); |
| 710 | 935 remove_arg_slots(_masm, rdi_stack_move, |
| 936 rax_argslot, rbx_temp, rdx_temp); | |
| 937 | |
| 938 __ pop(rdi); // restore temp | |
| 939 | |
| 940 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
| 941 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 942 } | |
| 943 break; | |
| 944 | |
| 945 case _adapter_collect_args: | |
| 946 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 947 break; | |
| 948 | |
| 949 case _adapter_spread_args: | |
| 950 // handled completely by optimized cases | |
| 951 __ stop("init_AdapterMethodHandle should not issue this"); | |
| 952 break; | |
| 953 | |
| 954 case _adapter_opt_spread_0: | |
| 955 case _adapter_opt_spread_1: | |
| 956 case _adapter_opt_spread_more: | |
| 957 { | |
| 958 // spread an array out into a group of arguments | |
| 1304 | 959 int length_constant = get_ek_adapter_opt_spread_info(ek); |
| 710 | 960 |
| 961 // find the address of the array argument | |
| 962 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 963 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 964 | |
| 965 // grab some temps | |
| 966 { __ push(rsi); __ push(rdi); } | |
| 967 // (preceding pushes must be done after argslot address is taken!) | |
| 968 #define UNPUSH_RSI_RDI \ | |
| 969 { __ pop(rdi); __ pop(rsi); } | |
| 970 | |
| 971 // arx_argslot points both to the array and to the first output arg | |
| 972 vmarg = Address(rax_argslot, 0); | |
| 973 | |
| 974 // Get the array value. | |
| 975 Register rsi_array = rsi; | |
| 976 Register rdx_array_klass = rdx_temp; | |
| 977 BasicType elem_type = T_OBJECT; | |
| 978 int length_offset = arrayOopDesc::length_offset_in_bytes(); | |
| 979 int elem0_offset = arrayOopDesc::base_offset_in_bytes(elem_type); | |
| 980 __ movptr(rsi_array, vmarg); | |
| 981 Label skip_array_check; | |
| 982 if (length_constant == 0) { | |
| 983 __ testptr(rsi_array, rsi_array); | |
| 984 __ jcc(Assembler::zero, skip_array_check); | |
| 985 } | |
| 986 __ null_check(rsi_array, oopDesc::klass_offset_in_bytes()); | |
| 987 __ load_klass(rdx_array_klass, rsi_array); | |
| 988 | |
| 989 // Check the array type. | |
| 990 Register rbx_klass = rbx_temp; | |
| 991 __ movptr(rbx_klass, rcx_amh_argument); // this is a Class object! | |
| 992 __ movptr(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes())); | |
| 993 | |
| 994 Label ok_array_klass, bad_array_klass, bad_array_length; | |
| 995 __ check_klass_subtype(rdx_array_klass, rbx_klass, rdi, ok_array_klass); | |
| 996 // If we get here, the type check failed! | |
| 997 __ jmp(bad_array_klass); | |
| 998 __ bind(ok_array_klass); | |
| 999 | |
| 1000 // Check length. | |
| 1001 if (length_constant >= 0) { | |
| 1002 __ cmpl(Address(rsi_array, length_offset), length_constant); | |
| 1003 } else { | |
| 1004 Register rbx_vminfo = rbx_temp; | |
| 1005 __ movl(rbx_vminfo, rcx_amh_conversion); | |
| 1006 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
| 1007 __ andl(rbx_vminfo, CONV_VMINFO_MASK); | |
| 1008 __ cmpl(rbx_vminfo, Address(rsi_array, length_offset)); | |
| 1009 } | |
| 1010 __ jcc(Assembler::notEqual, bad_array_length); | |
| 1011 | |
| 1012 Register rdx_argslot_limit = rdx_temp; | |
| 1013 | |
| 1014 // Array length checks out. Now insert any required stack slots. | |
| 1015 if (length_constant == -1) { | |
| 1016 // Form a pointer to the end of the affected region. | |
| 1017 __ lea(rdx_argslot_limit, Address(rax_argslot, Interpreter::stackElementSize())); | |
| 1018 // 'stack_move' is negative number of words to insert | |
| 1019 Register rdi_stack_move = rdi; | |
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1020 __ movl2ptr(rdi_stack_move, rcx_amh_conversion); |
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1021 __ sarptr(rdi_stack_move, CONV_STACK_MOVE_SHIFT); |
| 710 | 1022 Register rsi_temp = rsi_array; // spill this |
| 1023 insert_arg_slots(_masm, rdi_stack_move, -1, | |
| 1024 rax_argslot, rbx_temp, rsi_temp); | |
| 1025 // reload the array (since rsi was killed) | |
| 1026 __ movptr(rsi_array, vmarg); | |
| 1027 } else if (length_constant > 1) { | |
| 1028 int arg_mask = 0; | |
| 1029 int new_slots = (length_constant - 1); | |
| 1030 for (int i = 0; i < new_slots; i++) { | |
| 1031 arg_mask <<= 1; | |
| 1032 arg_mask |= _INSERT_REF_MASK; | |
| 1033 } | |
| 1034 insert_arg_slots(_masm, new_slots * stack_move_unit(), arg_mask, | |
| 1035 rax_argslot, rbx_temp, rdx_temp); | |
| 1036 } else if (length_constant == 1) { | |
| 1037 // no stack resizing required | |
| 1038 } else if (length_constant == 0) { | |
| 1039 remove_arg_slots(_masm, -stack_move_unit(), | |
| 1040 rax_argslot, rbx_temp, rdx_temp); | |
| 1041 } | |
| 1042 | |
| 1043 // Copy from the array to the new slots. | |
| 1044 // Note: Stack change code preserves integrity of rax_argslot pointer. | |
| 1045 // So even after slot insertions, rax_argslot still points to first argument. | |
| 1046 if (length_constant == -1) { | |
| 1047 // [rax_argslot, rdx_argslot_limit) is the area we are inserting into. | |
| 1048 Register rsi_source = rsi_array; | |
| 1049 __ lea(rsi_source, Address(rsi_array, elem0_offset)); | |
| 1050 Label loop; | |
| 1051 __ bind(loop); | |
| 1052 __ movptr(rbx_temp, Address(rsi_source, 0)); | |
| 1053 __ movptr(Address(rax_argslot, 0), rbx_temp); | |
| 1054 __ addptr(rsi_source, type2aelembytes(elem_type)); | |
| 1055 __ addptr(rax_argslot, Interpreter::stackElementSize()); | |
| 1056 __ cmpptr(rax_argslot, rdx_argslot_limit); | |
|
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1057 __ jccb(Assembler::less, loop); |
| 710 | 1058 } else if (length_constant == 0) { |
| 1059 __ bind(skip_array_check); | |
| 1060 // nothing to copy | |
| 1061 } else { | |
| 1062 int elem_offset = elem0_offset; | |
| 1063 int slot_offset = 0; | |
| 1064 for (int index = 0; index < length_constant; index++) { | |
| 1065 __ movptr(rbx_temp, Address(rsi_array, elem_offset)); | |
| 1066 __ movptr(Address(rax_argslot, slot_offset), rbx_temp); | |
| 1067 elem_offset += type2aelembytes(elem_type); | |
| 1068 slot_offset += Interpreter::stackElementSize(); | |
| 1069 } | |
| 1070 } | |
| 1071 | |
| 1072 // Arguments are spread. Move to next method handle. | |
| 1073 UNPUSH_RSI_RDI; | |
| 1074 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
| 1075 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 1076 | |
| 1077 __ bind(bad_array_klass); | |
| 1078 UNPUSH_RSI_RDI; | |
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1079 __ pushptr(Address(rdx_array_klass, java_mirror_offset)); // required type |
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1080 __ pushptr(vmarg); // bad array |
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1081 __ push((int)Bytecodes::_aaload); // who is complaining? |
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1082 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
| 710 | 1083 |
| 1084 __ bind(bad_array_length); | |
| 1085 UNPUSH_RSI_RDI; | |
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1086 __ push(rcx_recv); // AMH requiring a certain length |
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1087 __ pushptr(vmarg); // bad array |
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1088 __ push((int)Bytecodes::_arraylength); // who is complaining? |
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1089 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
| 710 | 1090 |
| 1091 #undef UNPUSH_RSI_RDI | |
| 1092 } | |
| 1093 break; | |
| 1094 | |
| 1095 case _adapter_flyby: | |
| 1096 case _adapter_ricochet: | |
| 1097 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 1098 break; | |
| 1099 | |
| 1100 default: ShouldNotReachHere(); | |
| 1101 } | |
| 1102 __ hlt(); | |
| 1103 | |
| 1104 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry); | |
| 1105 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 1106 | |
| 1107 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie)); | |
| 1108 } |