Mercurial > hg > truffle
annotate src/cpu/x86/vm/methodHandles_x86.cpp @ 1507:cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
Summary: split MethodHandle.invoke into invokeExact and invokeGeneric; also clean up JVM-to-Java interfaces
Reviewed-by: twisti
| author | jrose |
|---|---|
| date | Sat, 01 May 2010 02:42:18 -0700 |
| parents | 2338d41fbd81 |
| children | c18cbe5936b8 |
| 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, | |
| 1503 | 130 Register rbx_temp, Register rdx_temp, Register temp3_reg) { |
| 131 assert(temp3_reg == noreg, "temp3 not required"); | |
| 710 | 132 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
| 133 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
| 134 | |
| 135 #ifdef ASSERT | |
| 136 verify_argslot(_masm, rax_argslot, "insertion point must fall within current frame"); | |
| 137 if (arg_slots.is_register()) { | |
| 138 Label L_ok, L_bad; | |
| 139 __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD); | |
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140 __ jccb(Assembler::greater, L_bad); |
| 710 | 141 __ testl(arg_slots.as_register(), -stack_move_unit() - 1); |
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142 __ jccb(Assembler::zero, L_ok); |
| 710 | 143 __ bind(L_bad); |
| 144 __ stop("assert arg_slots <= 0 and clear low bits"); | |
| 145 __ bind(L_ok); | |
| 146 } else { | |
| 147 assert(arg_slots.as_constant() <= 0, ""); | |
| 148 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
| 149 } | |
| 150 #endif //ASSERT | |
| 151 | |
| 152 #ifdef _LP64 | |
| 153 if (arg_slots.is_register()) { | |
| 154 // clean high bits of stack motion register (was loaded as an int) | |
| 155 __ movslq(arg_slots.as_register(), arg_slots.as_register()); | |
| 156 } | |
| 157 #endif | |
| 158 | |
| 159 // Make space on the stack for the inserted argument(s). | |
| 160 // Then pull down everything shallower than rax_argslot. | |
| 161 // The stacked return address gets pulled down with everything else. | |
| 162 // That is, copy [rsp, argslot) downward by -size words. In pseudo-code: | |
| 163 // rsp -= size; | |
| 164 // for (rdx = rsp + size; rdx < argslot; rdx++) | |
| 165 // rdx[-size] = rdx[0] | |
| 166 // argslot -= size; | |
| 167 __ mov(rdx_temp, rsp); // source pointer for copy | |
| 168 __ lea(rsp, Address(rsp, arg_slots, Address::times_ptr)); | |
| 169 { | |
| 170 Label loop; | |
| 171 __ bind(loop); | |
| 172 // pull one word down each time through the loop | |
| 173 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
| 174 __ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp); | |
| 175 __ addptr(rdx_temp, wordSize); | |
| 176 __ cmpptr(rdx_temp, rax_argslot); | |
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177 __ jccb(Assembler::less, loop); |
| 710 | 178 } |
| 179 | |
| 180 // Now move the argslot down, to point to the opened-up space. | |
| 181 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
| 182 } | |
| 183 | |
| 184 // Helper to remove argument slots from the stack. | |
| 185 // arg_slots must be a multiple of stack_move_unit() and >= 0 | |
| 186 void MethodHandles::remove_arg_slots(MacroAssembler* _masm, | |
| 187 RegisterOrConstant arg_slots, | |
| 188 Register rax_argslot, | |
| 1503 | 189 Register rbx_temp, Register rdx_temp, Register temp3_reg) { |
| 190 assert(temp3_reg == noreg, "temp3 not required"); | |
| 710 | 191 assert_different_registers(rax_argslot, rbx_temp, rdx_temp, |
| 192 (!arg_slots.is_register() ? rsp : arg_slots.as_register())); | |
| 193 | |
| 194 #ifdef ASSERT | |
| 1304 | 195 // Verify that [argslot..argslot+size) lies within (rsp, rbp). |
| 196 __ lea(rbx_temp, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
| 197 verify_argslot(_masm, rbx_temp, "deleted argument(s) must fall within current frame"); | |
| 710 | 198 if (arg_slots.is_register()) { |
| 199 Label L_ok, L_bad; | |
| 200 __ cmpptr(arg_slots.as_register(), (int32_t) NULL_WORD); | |
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201 __ jccb(Assembler::less, L_bad); |
| 710 | 202 __ testl(arg_slots.as_register(), -stack_move_unit() - 1); |
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203 __ jccb(Assembler::zero, L_ok); |
| 710 | 204 __ bind(L_bad); |
| 205 __ stop("assert arg_slots >= 0 and clear low bits"); | |
| 206 __ bind(L_ok); | |
| 207 } else { | |
| 208 assert(arg_slots.as_constant() >= 0, ""); | |
| 209 assert(arg_slots.as_constant() % -stack_move_unit() == 0, ""); | |
| 210 } | |
| 211 #endif //ASSERT | |
| 212 | |
| 213 #ifdef _LP64 | |
| 214 if (false) { // not needed, since register is positive | |
| 215 // clean high bits of stack motion register (was loaded as an int) | |
| 216 if (arg_slots.is_register()) | |
| 217 __ movslq(arg_slots.as_register(), arg_slots.as_register()); | |
| 218 } | |
| 219 #endif | |
| 220 | |
| 221 // Pull up everything shallower than rax_argslot. | |
| 222 // Then remove the excess space on the stack. | |
| 223 // The stacked return address gets pulled up with everything else. | |
| 224 // That is, copy [rsp, argslot) upward by size words. In pseudo-code: | |
| 225 // for (rdx = argslot-1; rdx >= rsp; --rdx) | |
| 226 // rdx[size] = rdx[0] | |
| 227 // argslot += size; | |
| 228 // rsp += size; | |
| 229 __ lea(rdx_temp, Address(rax_argslot, -wordSize)); // source pointer for copy | |
| 230 { | |
| 231 Label loop; | |
| 232 __ bind(loop); | |
| 233 // pull one word up each time through the loop | |
| 234 __ movptr(rbx_temp, Address(rdx_temp, 0)); | |
| 235 __ movptr(Address(rdx_temp, arg_slots, Address::times_ptr), rbx_temp); | |
| 236 __ addptr(rdx_temp, -wordSize); | |
| 237 __ cmpptr(rdx_temp, rsp); | |
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238 __ jccb(Assembler::greaterEqual, loop); |
| 710 | 239 } |
| 240 | |
| 241 // Now move the argslot up, to point to the just-copied block. | |
| 242 __ lea(rsp, Address(rsp, arg_slots, Address::times_ptr)); | |
| 243 // And adjust the argslot address to point at the deletion point. | |
| 244 __ lea(rax_argslot, Address(rax_argslot, arg_slots, Address::times_ptr)); | |
| 245 } | |
| 246 | |
| 247 #ifndef PRODUCT | |
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248 extern "C" void print_method_handle(oop mh); |
| 710 | 249 void trace_method_handle_stub(const char* adaptername, |
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250 oop mh, |
| 710 | 251 intptr_t* entry_sp, |
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252 intptr_t* saved_sp, |
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253 intptr_t* saved_bp) { |
| 710 | 254 // called as a leaf from native code: do not block the JVM! |
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255 intptr_t* last_sp = (intptr_t*) saved_bp[frame::interpreter_frame_last_sp_offset]; |
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256 intptr_t* base_sp = (intptr_t*) saved_bp[frame::interpreter_frame_monitor_block_top_offset]; |
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257 printf("MH %s mh="INTPTR_FORMAT" sp=("INTPTR_FORMAT"+"INTX_FORMAT") stack_size="INTX_FORMAT" bp="INTPTR_FORMAT"\n", |
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258 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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259 if (last_sp != saved_sp) |
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260 printf("*** last_sp="INTPTR_FORMAT"\n", (intptr_t)last_sp); |
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261 if (Verbose) print_method_handle(mh); |
| 710 | 262 } |
| 263 #endif //PRODUCT | |
| 264 | |
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265 // which conversion op types are implemented here? |
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266 int MethodHandles::adapter_conversion_ops_supported_mask() { |
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267 return ((1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_ONLY) |
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268 |(1<<sun_dyn_AdapterMethodHandle::OP_RETYPE_RAW) |
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269 |(1<<sun_dyn_AdapterMethodHandle::OP_CHECK_CAST) |
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270 |(1<<sun_dyn_AdapterMethodHandle::OP_PRIM_TO_PRIM) |
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271 |(1<<sun_dyn_AdapterMethodHandle::OP_REF_TO_PRIM) |
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272 |(1<<sun_dyn_AdapterMethodHandle::OP_SWAP_ARGS) |
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273 |(1<<sun_dyn_AdapterMethodHandle::OP_ROT_ARGS) |
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274 |(1<<sun_dyn_AdapterMethodHandle::OP_DUP_ARGS) |
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275 |(1<<sun_dyn_AdapterMethodHandle::OP_DROP_ARGS) |
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276 //|(1<<sun_dyn_AdapterMethodHandle::OP_SPREAD_ARGS) //BUG! |
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277 ); |
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278 // FIXME: MethodHandlesTest gets a crash if we enable OP_SPREAD_ARGS. |
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279 } |
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280 |
| 710 | 281 // Generate an "entry" field for a method handle. |
| 282 // This determines how the method handle will respond to calls. | |
| 283 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) { | |
| 284 // Here is the register state during an interpreted call, | |
| 285 // as set up by generate_method_handle_interpreter_entry(): | |
| 286 // - rbx: garbage temp (was MethodHandle.invoke methodOop, unused) | |
| 287 // - rcx: receiver method handle | |
| 288 // - rax: method handle type (only used by the check_mtype entry point) | |
| 289 // - rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted) | |
| 290 // - rdx: garbage temp, can blow away | |
| 291 | |
| 292 Register rcx_recv = rcx; | |
| 293 Register rax_argslot = rax; | |
| 294 Register rbx_temp = rbx; | |
| 295 Register rdx_temp = rdx; | |
| 296 | |
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297 // This guy is set up by prepare_to_jump_from_interpreted (from interpreted calls) |
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298 // and gen_c2i_adapter (from compiled calls): |
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299 Register saved_last_sp = LP64_ONLY(r13) NOT_LP64(rsi); |
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300 |
| 710 | 301 guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets"); |
| 302 | |
| 303 // some handy addresses | |
| 304 Address rbx_method_fie( rbx, methodOopDesc::from_interpreted_offset() ); | |
| 305 | |
| 306 Address rcx_mh_vmtarget( rcx_recv, java_dyn_MethodHandle::vmtarget_offset_in_bytes() ); | |
| 307 Address rcx_dmh_vmindex( rcx_recv, sun_dyn_DirectMethodHandle::vmindex_offset_in_bytes() ); | |
| 308 | |
| 309 Address rcx_bmh_vmargslot( rcx_recv, sun_dyn_BoundMethodHandle::vmargslot_offset_in_bytes() ); | |
| 310 Address rcx_bmh_argument( rcx_recv, sun_dyn_BoundMethodHandle::argument_offset_in_bytes() ); | |
| 311 | |
| 312 Address rcx_amh_vmargslot( rcx_recv, sun_dyn_AdapterMethodHandle::vmargslot_offset_in_bytes() ); | |
| 313 Address rcx_amh_argument( rcx_recv, sun_dyn_AdapterMethodHandle::argument_offset_in_bytes() ); | |
| 314 Address rcx_amh_conversion( rcx_recv, sun_dyn_AdapterMethodHandle::conversion_offset_in_bytes() ); | |
| 315 Address vmarg; // __ argument_address(vmargslot) | |
| 316 | |
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317 const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); |
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318 |
| 710 | 319 if (have_entry(ek)) { |
| 320 __ nop(); // empty stubs make SG sick | |
| 321 return; | |
| 322 } | |
| 323 | |
| 324 address interp_entry = __ pc(); | |
| 325 if (UseCompressedOops) __ unimplemented("UseCompressedOops"); | |
| 326 | |
| 327 #ifndef PRODUCT | |
| 328 if (TraceMethodHandles) { | |
| 329 __ push(rax); __ push(rbx); __ push(rcx); __ push(rdx); __ push(rsi); __ push(rdi); | |
| 330 __ lea(rax, Address(rsp, wordSize*6)); // entry_sp | |
| 331 // arguments: | |
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332 __ push(rbp); // interpreter frame pointer |
| 710 | 333 __ push(rsi); // saved_sp |
| 334 __ push(rax); // entry_sp | |
| 335 __ push(rcx); // mh | |
| 336 __ push(rcx); | |
| 337 __ movptr(Address(rsp, 0), (intptr_t)entry_name(ek)); | |
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338 __ call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub), 5); |
| 710 | 339 __ pop(rdi); __ pop(rsi); __ pop(rdx); __ pop(rcx); __ pop(rbx); __ pop(rax); |
| 340 } | |
| 341 #endif //PRODUCT | |
| 342 | |
| 343 switch ((int) ek) { | |
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344 case _raise_exception: |
| 710 | 345 { |
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346 // Not a real MH entry, but rather shared code for raising an exception. |
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347 // Extra local arguments are pushed on stack, as required type at TOS+8, |
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348 // failing object (or NULL) at TOS+4, failing bytecode type at TOS. |
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349 // Beyond those local arguments are the PC, of course. |
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350 Register rdx_code = rdx_temp; |
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351 Register rcx_fail = rcx_recv; |
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352 Register rax_want = rax_argslot; |
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353 Register rdi_pc = rdi; |
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354 __ pop(rdx_code); // TOS+0 |
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355 __ pop(rcx_fail); // TOS+4 |
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356 __ pop(rax_want); // TOS+8 |
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357 __ pop(rdi_pc); // caller PC |
| 710 | 358 |
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359 __ mov(rsp, rsi); // cut the stack back to where the caller started |
| 710 | 360 |
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361 // Repush the arguments as if coming from the interpreter. |
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362 __ push(rdx_code); |
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363 __ push(rcx_fail); |
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364 __ push(rax_want); |
| 710 | 365 |
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366 Register rbx_method = rbx_temp; |
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367 Label no_method; |
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368 // FIXME: fill in _raise_exception_method with a suitable sun.dyn method |
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369 __ movptr(rbx_method, ExternalAddress((address) &_raise_exception_method)); |
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370 __ testptr(rbx_method, rbx_method); |
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371 __ jccb(Assembler::zero, no_method); |
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372 int jobject_oop_offset = 0; |
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373 __ movptr(rbx_method, Address(rbx_method, jobject_oop_offset)); // dereference the jobject |
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374 __ testptr(rbx_method, rbx_method); |
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375 __ jccb(Assembler::zero, no_method); |
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376 __ verify_oop(rbx_method); |
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377 __ push(rdi_pc); // and restore caller PC |
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378 __ jmp(rbx_method_fie); |
| 710 | 379 |
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380 // If we get here, the Java runtime did not do its job of creating the exception. |
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381 // Do something that is at least causes a valid throw from the interpreter. |
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382 __ bind(no_method); |
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383 __ pop(rax_want); |
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384 __ pop(rcx_fail); |
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385 __ push(rax_want); |
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386 __ push(rcx_fail); |
| 710 | 387 __ jump(ExternalAddress(Interpreter::throw_WrongMethodType_entry())); |
| 388 } | |
| 389 break; | |
| 390 | |
| 391 case _invokestatic_mh: | |
| 392 case _invokespecial_mh: | |
| 393 { | |
| 394 Register rbx_method = rbx_temp; | |
| 395 __ movptr(rbx_method, rcx_mh_vmtarget); // target is a methodOop | |
| 396 __ verify_oop(rbx_method); | |
| 397 // same as TemplateTable::invokestatic or invokespecial, | |
| 398 // minus the CP setup and profiling: | |
| 399 if (ek == _invokespecial_mh) { | |
| 400 // Must load & check the first argument before entering the target method. | |
| 401 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
| 402 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
| 403 __ null_check(rcx_recv); | |
| 404 __ verify_oop(rcx_recv); | |
| 405 } | |
| 406 __ jmp(rbx_method_fie); | |
| 407 } | |
| 408 break; | |
| 409 | |
| 410 case _invokevirtual_mh: | |
| 411 { | |
| 412 // same as TemplateTable::invokevirtual, | |
| 413 // minus the CP setup and profiling: | |
| 414 | |
| 415 // pick out the vtable index and receiver offset from the MH, | |
| 416 // and then we can discard it: | |
| 417 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
| 418 Register rbx_index = rbx_temp; | |
| 419 __ movl(rbx_index, rcx_dmh_vmindex); | |
| 420 // Note: The verifier allows us to ignore rcx_mh_vmtarget. | |
| 421 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
| 422 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
| 423 | |
| 424 // get receiver klass | |
| 425 Register rax_klass = rax_argslot; | |
| 426 __ load_klass(rax_klass, rcx_recv); | |
| 427 __ verify_oop(rax_klass); | |
| 428 | |
| 429 // get target methodOop & entry point | |
| 430 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
| 431 assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below"); | |
| 432 Address vtable_entry_addr(rax_klass, | |
| 433 rbx_index, Address::times_ptr, | |
| 434 base + vtableEntry::method_offset_in_bytes()); | |
| 435 Register rbx_method = rbx_temp; | |
| 1108 | 436 __ movptr(rbx_method, vtable_entry_addr); |
| 710 | 437 |
| 438 __ verify_oop(rbx_method); | |
| 439 __ jmp(rbx_method_fie); | |
| 440 } | |
| 441 break; | |
| 442 | |
| 443 case _invokeinterface_mh: | |
| 444 { | |
| 445 // same as TemplateTable::invokeinterface, | |
| 446 // minus the CP setup and profiling: | |
| 447 | |
| 448 // pick out the interface and itable index from the MH. | |
| 449 __ load_method_handle_vmslots(rax_argslot, rcx_recv, rdx_temp); | |
| 450 Register rdx_intf = rdx_temp; | |
| 451 Register rbx_index = rbx_temp; | |
| 452 __ movptr(rdx_intf, rcx_mh_vmtarget); | |
| 453 __ movl(rbx_index, rcx_dmh_vmindex); | |
| 454 __ movptr(rcx_recv, __ argument_address(rax_argslot, -1)); | |
| 455 __ null_check(rcx_recv, oopDesc::klass_offset_in_bytes()); | |
| 456 | |
| 457 // get receiver klass | |
| 458 Register rax_klass = rax_argslot; | |
| 459 __ load_klass(rax_klass, rcx_recv); | |
| 460 __ verify_oop(rax_klass); | |
| 461 | |
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462 Register rdi_temp = rdi; |
| 710 | 463 Register rbx_method = rbx_index; |
| 464 | |
| 465 // get interface klass | |
| 466 Label no_such_interface; | |
| 467 __ verify_oop(rdx_intf); | |
| 468 __ lookup_interface_method(rax_klass, rdx_intf, | |
| 469 // note: next two args must be the same: | |
| 470 rbx_index, rbx_method, | |
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471 rdi_temp, |
| 710 | 472 no_such_interface); |
| 473 | |
| 474 __ verify_oop(rbx_method); | |
| 475 __ jmp(rbx_method_fie); | |
| 476 __ hlt(); | |
| 477 | |
| 478 __ bind(no_such_interface); | |
| 479 // Throw an exception. | |
| 480 // For historical reasons, it will be IncompatibleClassChangeError. | |
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481 __ pushptr(Address(rdx_intf, java_mirror_offset)); // required interface |
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482 __ push(rcx_recv); // bad receiver |
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483 __ push((int)Bytecodes::_invokeinterface); // who is complaining? |
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484 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
| 710 | 485 } |
| 486 break; | |
| 487 | |
| 488 case _bound_ref_mh: | |
| 489 case _bound_int_mh: | |
| 490 case _bound_long_mh: | |
| 491 case _bound_ref_direct_mh: | |
| 492 case _bound_int_direct_mh: | |
| 493 case _bound_long_direct_mh: | |
| 494 { | |
| 495 bool direct_to_method = (ek >= _bound_ref_direct_mh); | |
| 1304 | 496 BasicType arg_type = T_ILLEGAL; |
| 497 int arg_mask = _INSERT_NO_MASK; | |
| 498 int arg_slots = -1; | |
| 499 get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots); | |
| 710 | 500 |
| 501 // make room for the new argument: | |
| 502 __ movl(rax_argslot, rcx_bmh_vmargslot); | |
| 503 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 504 insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, | |
| 505 rax_argslot, rbx_temp, rdx_temp); | |
| 506 | |
| 507 // store bound argument into the new stack slot: | |
| 508 __ movptr(rbx_temp, rcx_bmh_argument); | |
| 509 Address prim_value_addr(rbx_temp, java_lang_boxing_object::value_offset_in_bytes(arg_type)); | |
| 510 if (arg_type == T_OBJECT) { | |
| 511 __ movptr(Address(rax_argslot, 0), rbx_temp); | |
| 512 } else { | |
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513 __ load_sized_value(rdx_temp, prim_value_addr, |
| 710 | 514 type2aelembytes(arg_type), is_signed_subword_type(arg_type)); |
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515 __ movptr(Address(rax_argslot, 0), rdx_temp); |
| 710 | 516 #ifndef _LP64 |
| 517 if (arg_slots == 2) { | |
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518 __ movl(rdx_temp, prim_value_addr.plus_disp(wordSize)); |
| 1506 | 519 __ movl(Address(rax_argslot, Interpreter::stackElementSize), rdx_temp); |
| 710 | 520 } |
| 521 #endif //_LP64 | |
| 522 } | |
| 523 | |
| 524 if (direct_to_method) { | |
| 525 Register rbx_method = rbx_temp; | |
| 526 __ movptr(rbx_method, rcx_mh_vmtarget); | |
| 527 __ verify_oop(rbx_method); | |
| 528 __ jmp(rbx_method_fie); | |
| 529 } else { | |
| 530 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
| 531 __ verify_oop(rcx_recv); | |
| 532 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 533 } | |
| 534 } | |
| 535 break; | |
| 536 | |
| 537 case _adapter_retype_only: | |
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538 case _adapter_retype_raw: |
| 710 | 539 // immediately jump to the next MH layer: |
| 540 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
| 541 __ verify_oop(rcx_recv); | |
| 542 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 543 // This is OK when all parameter types widen. | |
| 544 // It is also OK when a return type narrows. | |
| 545 break; | |
| 546 | |
| 547 case _adapter_check_cast: | |
| 548 { | |
| 549 // temps: | |
| 550 Register rbx_klass = rbx_temp; // interesting AMH data | |
| 551 | |
| 552 // check a reference argument before jumping to the next layer of MH: | |
| 553 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 554 vmarg = __ argument_address(rax_argslot); | |
| 555 | |
| 556 // What class are we casting to? | |
| 557 __ movptr(rbx_klass, rcx_amh_argument); // this is a Class object! | |
| 558 __ movptr(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes())); | |
| 559 | |
| 560 Label done; | |
| 561 __ movptr(rdx_temp, vmarg); | |
| 1277 | 562 __ testptr(rdx_temp, rdx_temp); |
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563 __ jccb(Assembler::zero, done); // no cast if null |
| 710 | 564 __ load_klass(rdx_temp, rdx_temp); |
| 565 | |
| 566 // live at this point: | |
| 567 // - rbx_klass: klass required by the target method | |
| 568 // - rdx_temp: argument klass to test | |
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569 // - rcx_recv: adapter method handle |
| 710 | 570 __ check_klass_subtype(rdx_temp, rbx_klass, rax_argslot, done); |
| 571 | |
| 572 // If we get here, the type check failed! | |
| 573 // Call the wrong_method_type stub, passing the failing argument type in rax. | |
| 574 Register rax_mtype = rax_argslot; | |
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575 __ movl(rax_argslot, rcx_amh_vmargslot); // reload argslot field |
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576 __ movptr(rdx_temp, vmarg); |
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577 |
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578 __ pushptr(rcx_amh_argument); // required class |
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579 __ push(rdx_temp); // bad object |
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580 __ push((int)Bytecodes::_checkcast); // who is complaining? |
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581 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
| 710 | 582 |
| 583 __ bind(done); | |
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584 // get the new MH: |
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585 __ movptr(rcx_recv, rcx_mh_vmtarget); |
| 710 | 586 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); |
| 587 } | |
| 588 break; | |
| 589 | |
| 590 case _adapter_prim_to_prim: | |
| 591 case _adapter_ref_to_prim: | |
| 592 // handled completely by optimized cases | |
| 593 __ stop("init_AdapterMethodHandle should not issue this"); | |
| 594 break; | |
| 595 | |
| 596 case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim | |
| 597 //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim | |
| 598 case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim | |
| 599 case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim | |
| 600 { | |
| 601 // perform an in-place conversion to int or an int subword | |
| 602 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 603 vmarg = __ argument_address(rax_argslot); | |
| 604 | |
| 605 switch (ek) { | |
| 606 case _adapter_opt_i2i: | |
| 607 __ movl(rdx_temp, vmarg); | |
| 608 break; | |
| 609 case _adapter_opt_l2i: | |
| 610 { | |
| 611 // just delete the extra slot; on a little-endian machine we keep the first | |
| 612 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
| 613 remove_arg_slots(_masm, -stack_move_unit(), | |
| 614 rax_argslot, rbx_temp, rdx_temp); | |
| 1506 | 615 vmarg = Address(rax_argslot, -Interpreter::stackElementSize); |
| 710 | 616 __ movl(rdx_temp, vmarg); |
| 617 } | |
| 618 break; | |
| 619 case _adapter_opt_unboxi: | |
| 620 { | |
| 621 // Load the value up from the heap. | |
| 622 __ movptr(rdx_temp, vmarg); | |
| 623 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT); | |
| 624 #ifdef ASSERT | |
| 625 for (int bt = T_BOOLEAN; bt < T_INT; bt++) { | |
| 626 if (is_subword_type(BasicType(bt))) | |
| 627 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), ""); | |
| 628 } | |
| 629 #endif | |
| 630 __ null_check(rdx_temp, value_offset); | |
| 631 __ movl(rdx_temp, Address(rdx_temp, value_offset)); | |
| 632 // We load this as a word. Because we are little-endian, | |
| 633 // the low bits will be correct, but the high bits may need cleaning. | |
| 634 // The vminfo will guide us to clean those bits. | |
| 635 } | |
| 636 break; | |
| 637 default: | |
| 1304 | 638 ShouldNotReachHere(); |
| 710 | 639 } |
| 640 | |
| 1304 | 641 // Do the requested conversion and store the value. |
| 710 | 642 Register rbx_vminfo = rbx_temp; |
| 643 __ movl(rbx_vminfo, rcx_amh_conversion); | |
| 644 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
| 645 | |
| 646 // get the new MH: | |
| 647 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
| 648 // (now we are done with the old MH) | |
| 649 | |
| 650 // original 32-bit vmdata word must be of this form: | |
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651 // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 | |
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652 __ xchgptr(rcx, rbx_vminfo); // free rcx for shifts |
| 710 | 653 __ shll(rdx_temp /*, rcx*/); |
| 654 Label zero_extend, done; | |
| 655 __ testl(rcx, CONV_VMINFO_SIGN_FLAG); | |
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656 __ jccb(Assembler::zero, zero_extend); |
| 710 | 657 |
| 658 // this path is taken for int->byte, int->short | |
| 659 __ sarl(rdx_temp /*, rcx*/); | |
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660 __ jmpb(done); |
| 710 | 661 |
| 662 __ bind(zero_extend); | |
| 663 // this is taken for int->char | |
| 664 __ shrl(rdx_temp /*, rcx*/); | |
| 665 | |
| 666 __ bind(done); | |
| 1304 | 667 __ movl(vmarg, rdx_temp); // Store the value. |
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668 __ xchgptr(rcx, rbx_vminfo); // restore rcx_recv |
| 710 | 669 |
| 670 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 671 } | |
| 672 break; | |
| 673 | |
| 674 case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim | |
| 675 case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim | |
| 676 { | |
| 677 // perform an in-place int-to-long or ref-to-long conversion | |
| 678 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 679 | |
| 680 // on a little-endian machine we keep the first slot and add another after | |
| 681 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
| 682 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, | |
| 683 rax_argslot, rbx_temp, rdx_temp); | |
| 1506 | 684 Address vmarg1(rax_argslot, -Interpreter::stackElementSize); |
| 685 Address vmarg2 = vmarg1.plus_disp(Interpreter::stackElementSize); | |
| 710 | 686 |
| 687 switch (ek) { | |
| 688 case _adapter_opt_i2l: | |
| 689 { | |
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690 #ifdef _LP64 |
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691 __ movslq(rdx_temp, vmarg1); // Load sign-extended |
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692 __ movq(vmarg1, rdx_temp); // Store into first slot |
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693 #else |
| 710 | 694 __ movl(rdx_temp, vmarg1); |
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695 __ sarl(rdx_temp, BitsPerInt - 1); // __ extend_sign() |
| 710 | 696 __ movl(vmarg2, rdx_temp); // store second word |
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697 #endif |
| 710 | 698 } |
| 699 break; | |
| 700 case _adapter_opt_unboxl: | |
| 701 { | |
| 702 // Load the value up from the heap. | |
| 703 __ movptr(rdx_temp, vmarg1); | |
| 704 int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG); | |
| 705 assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), ""); | |
| 706 __ null_check(rdx_temp, value_offset); | |
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707 #ifdef _LP64 |
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708 __ movq(rbx_temp, Address(rdx_temp, value_offset)); |
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709 __ movq(vmarg1, rbx_temp); |
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710 #else |
| 710 | 711 __ movl(rbx_temp, Address(rdx_temp, value_offset + 0*BytesPerInt)); |
| 712 __ movl(rdx_temp, Address(rdx_temp, value_offset + 1*BytesPerInt)); | |
| 713 __ movl(vmarg1, rbx_temp); | |
| 714 __ movl(vmarg2, rdx_temp); | |
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715 #endif |
| 710 | 716 } |
| 717 break; | |
| 718 default: | |
| 1304 | 719 ShouldNotReachHere(); |
| 710 | 720 } |
| 721 | |
| 722 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
| 723 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 724 } | |
| 725 break; | |
| 726 | |
| 727 case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim | |
| 728 case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim | |
| 729 { | |
| 730 // perform an in-place floating primitive conversion | |
| 731 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 732 __ lea(rax_argslot, __ argument_address(rax_argslot, 1)); | |
| 733 if (ek == _adapter_opt_f2d) { | |
| 734 insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, | |
| 735 rax_argslot, rbx_temp, rdx_temp); | |
| 736 } | |
| 1506 | 737 Address vmarg(rax_argslot, -Interpreter::stackElementSize); |
| 710 | 738 |
| 739 #ifdef _LP64 | |
| 740 if (ek == _adapter_opt_f2d) { | |
| 741 __ movflt(xmm0, vmarg); | |
| 742 __ cvtss2sd(xmm0, xmm0); | |
| 743 __ movdbl(vmarg, xmm0); | |
| 744 } else { | |
| 745 __ movdbl(xmm0, vmarg); | |
| 746 __ cvtsd2ss(xmm0, xmm0); | |
| 747 __ movflt(vmarg, xmm0); | |
| 748 } | |
| 749 #else //_LP64 | |
| 750 if (ek == _adapter_opt_f2d) { | |
| 751 __ fld_s(vmarg); // load float to ST0 | |
| 752 __ fstp_s(vmarg); // store single | |
| 1304 | 753 } else { |
| 710 | 754 __ fld_d(vmarg); // load double to ST0 |
| 755 __ fstp_s(vmarg); // store single | |
| 756 } | |
| 757 #endif //_LP64 | |
| 758 | |
| 759 if (ek == _adapter_opt_d2f) { | |
| 760 remove_arg_slots(_masm, -stack_move_unit(), | |
| 761 rax_argslot, rbx_temp, rdx_temp); | |
| 762 } | |
| 763 | |
| 764 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
| 765 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 766 } | |
| 767 break; | |
| 768 | |
| 769 case _adapter_prim_to_ref: | |
| 770 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 771 break; | |
| 772 | |
| 773 case _adapter_swap_args: | |
| 774 case _adapter_rot_args: | |
| 775 // handled completely by optimized cases | |
| 776 __ stop("init_AdapterMethodHandle should not issue this"); | |
| 777 break; | |
| 778 | |
| 779 case _adapter_opt_swap_1: | |
| 780 case _adapter_opt_swap_2: | |
| 781 case _adapter_opt_rot_1_up: | |
| 782 case _adapter_opt_rot_1_down: | |
| 783 case _adapter_opt_rot_2_up: | |
| 784 case _adapter_opt_rot_2_down: | |
| 785 { | |
| 1304 | 786 int swap_bytes = 0, rotate = 0; |
| 787 get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate); | |
| 710 | 788 |
| 789 // 'argslot' is the position of the first argument to swap | |
| 790 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 791 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 792 | |
| 793 // 'vminfo' is the second | |
| 794 Register rbx_destslot = rbx_temp; | |
| 795 __ movl(rbx_destslot, rcx_amh_conversion); | |
| 796 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
| 797 __ andl(rbx_destslot, CONV_VMINFO_MASK); | |
| 798 __ lea(rbx_destslot, __ argument_address(rbx_destslot)); | |
| 799 DEBUG_ONLY(verify_argslot(_masm, rbx_destslot, "swap point must fall within current frame")); | |
| 800 | |
| 801 if (!rotate) { | |
| 802 for (int i = 0; i < swap_bytes; i += wordSize) { | |
| 803 __ movptr(rdx_temp, Address(rax_argslot , i)); | |
| 804 __ push(rdx_temp); | |
| 805 __ movptr(rdx_temp, Address(rbx_destslot, i)); | |
| 806 __ movptr(Address(rax_argslot, i), rdx_temp); | |
| 807 __ pop(rdx_temp); | |
| 808 __ movptr(Address(rbx_destslot, i), rdx_temp); | |
| 809 } | |
| 810 } else { | |
| 811 // push the first chunk, which is going to get overwritten | |
| 812 for (int i = swap_bytes; (i -= wordSize) >= 0; ) { | |
| 813 __ movptr(rdx_temp, Address(rax_argslot, i)); | |
| 814 __ push(rdx_temp); | |
| 815 } | |
| 816 | |
| 817 if (rotate > 0) { | |
| 818 // rotate upward | |
| 819 __ subptr(rax_argslot, swap_bytes); | |
| 820 #ifdef ASSERT | |
| 821 { | |
| 822 // Verify that argslot > destslot, by at least swap_bytes. | |
| 823 Label L_ok; | |
| 824 __ cmpptr(rax_argslot, rbx_destslot); | |
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825 __ jccb(Assembler::aboveEqual, L_ok); |
| 710 | 826 __ stop("source must be above destination (upward rotation)"); |
| 827 __ bind(L_ok); | |
| 828 } | |
| 829 #endif | |
| 830 // work argslot down to destslot, copying contiguous data upwards | |
| 831 // pseudo-code: | |
| 832 // rax = src_addr - swap_bytes | |
| 833 // rbx = dest_addr | |
| 834 // while (rax >= rbx) *(rax + swap_bytes) = *(rax + 0), rax--; | |
| 835 Label loop; | |
| 836 __ bind(loop); | |
| 837 __ movptr(rdx_temp, Address(rax_argslot, 0)); | |
| 838 __ movptr(Address(rax_argslot, swap_bytes), rdx_temp); | |
| 839 __ addptr(rax_argslot, -wordSize); | |
| 840 __ cmpptr(rax_argslot, rbx_destslot); | |
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841 __ jccb(Assembler::aboveEqual, loop); |
| 710 | 842 } else { |
| 843 __ addptr(rax_argslot, swap_bytes); | |
| 844 #ifdef ASSERT | |
| 845 { | |
| 846 // Verify that argslot < destslot, by at least swap_bytes. | |
| 847 Label L_ok; | |
| 848 __ cmpptr(rax_argslot, rbx_destslot); | |
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849 __ jccb(Assembler::belowEqual, L_ok); |
| 710 | 850 __ stop("source must be below destination (downward rotation)"); |
| 851 __ bind(L_ok); | |
| 852 } | |
| 853 #endif | |
| 854 // work argslot up to destslot, copying contiguous data downwards | |
| 855 // pseudo-code: | |
| 856 // rax = src_addr + swap_bytes | |
| 857 // rbx = dest_addr | |
| 858 // while (rax <= rbx) *(rax - swap_bytes) = *(rax + 0), rax++; | |
| 859 Label loop; | |
| 860 __ bind(loop); | |
| 861 __ movptr(rdx_temp, Address(rax_argslot, 0)); | |
| 862 __ movptr(Address(rax_argslot, -swap_bytes), rdx_temp); | |
| 863 __ addptr(rax_argslot, wordSize); | |
| 864 __ cmpptr(rax_argslot, rbx_destslot); | |
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865 __ jccb(Assembler::belowEqual, loop); |
| 710 | 866 } |
| 867 | |
| 868 // pop the original first chunk into the destination slot, now free | |
| 869 for (int i = 0; i < swap_bytes; i += wordSize) { | |
| 870 __ pop(rdx_temp); | |
| 871 __ movptr(Address(rbx_destslot, i), rdx_temp); | |
| 872 } | |
| 873 } | |
| 874 | |
| 875 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
| 876 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 877 } | |
| 878 break; | |
| 879 | |
| 880 case _adapter_dup_args: | |
| 881 { | |
| 882 // 'argslot' is the position of the first argument to duplicate | |
| 883 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 884 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 885 | |
| 886 // 'stack_move' is negative number of words to duplicate | |
| 887 Register rdx_stack_move = rdx_temp; | |
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888 __ movl2ptr(rdx_stack_move, rcx_amh_conversion); |
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889 __ sarptr(rdx_stack_move, CONV_STACK_MOVE_SHIFT); |
| 710 | 890 |
| 891 int argslot0_num = 0; | |
| 892 Address argslot0 = __ argument_address(RegisterOrConstant(argslot0_num)); | |
| 893 assert(argslot0.base() == rsp, ""); | |
| 894 int pre_arg_size = argslot0.disp(); | |
| 895 assert(pre_arg_size % wordSize == 0, ""); | |
| 896 assert(pre_arg_size > 0, "must include PC"); | |
| 897 | |
| 898 // remember the old rsp+1 (argslot[0]) | |
| 899 Register rbx_oldarg = rbx_temp; | |
| 900 __ lea(rbx_oldarg, argslot0); | |
| 901 | |
| 902 // move rsp down to make room for dups | |
| 903 __ lea(rsp, Address(rsp, rdx_stack_move, Address::times_ptr)); | |
| 904 | |
| 905 // compute the new rsp+1 (argslot[0]) | |
| 906 Register rdx_newarg = rdx_temp; | |
| 907 __ lea(rdx_newarg, argslot0); | |
| 908 | |
| 909 __ push(rdi); // need a temp | |
| 910 // (preceding push must be done after arg addresses are taken!) | |
| 911 | |
| 912 // pull down the pre_arg_size data (PC) | |
| 913 for (int i = -pre_arg_size; i < 0; i += wordSize) { | |
| 914 __ movptr(rdi, Address(rbx_oldarg, i)); | |
| 915 __ movptr(Address(rdx_newarg, i), rdi); | |
| 916 } | |
| 917 | |
| 918 // copy from rax_argslot[0...] down to new_rsp[1...] | |
| 919 // pseudo-code: | |
| 920 // rbx = old_rsp+1 | |
| 921 // rdx = new_rsp+1 | |
| 922 // rax = argslot | |
| 923 // while (rdx < rbx) *rdx++ = *rax++ | |
| 924 Label loop; | |
| 925 __ bind(loop); | |
| 926 __ movptr(rdi, Address(rax_argslot, 0)); | |
| 927 __ movptr(Address(rdx_newarg, 0), rdi); | |
| 928 __ addptr(rax_argslot, wordSize); | |
| 929 __ addptr(rdx_newarg, wordSize); | |
| 930 __ cmpptr(rdx_newarg, rbx_oldarg); | |
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931 __ jccb(Assembler::less, loop); |
| 710 | 932 |
| 933 __ pop(rdi); // restore temp | |
| 934 | |
| 935 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
| 936 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 937 } | |
| 938 break; | |
| 939 | |
| 940 case _adapter_drop_args: | |
| 941 { | |
| 942 // 'argslot' is the position of the first argument to nuke | |
| 943 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 944 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 945 | |
| 946 __ push(rdi); // need a temp | |
| 947 // (must do previous push after argslot address is taken) | |
| 948 | |
| 949 // 'stack_move' is number of words to drop | |
| 950 Register rdi_stack_move = rdi; | |
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951 __ movl2ptr(rdi_stack_move, rcx_amh_conversion); |
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952 __ sarptr(rdi_stack_move, CONV_STACK_MOVE_SHIFT); |
| 710 | 953 remove_arg_slots(_masm, rdi_stack_move, |
| 954 rax_argslot, rbx_temp, rdx_temp); | |
| 955 | |
| 956 __ pop(rdi); // restore temp | |
| 957 | |
| 958 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
| 959 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 960 } | |
| 961 break; | |
| 962 | |
| 963 case _adapter_collect_args: | |
| 964 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 965 break; | |
| 966 | |
| 967 case _adapter_spread_args: | |
| 968 // handled completely by optimized cases | |
| 969 __ stop("init_AdapterMethodHandle should not issue this"); | |
| 970 break; | |
| 971 | |
| 972 case _adapter_opt_spread_0: | |
| 973 case _adapter_opt_spread_1: | |
| 974 case _adapter_opt_spread_more: | |
| 975 { | |
| 976 // spread an array out into a group of arguments | |
| 1304 | 977 int length_constant = get_ek_adapter_opt_spread_info(ek); |
| 710 | 978 |
| 979 // find the address of the array argument | |
| 980 __ movl(rax_argslot, rcx_amh_vmargslot); | |
| 981 __ lea(rax_argslot, __ argument_address(rax_argslot)); | |
| 982 | |
| 983 // grab some temps | |
| 984 { __ push(rsi); __ push(rdi); } | |
| 985 // (preceding pushes must be done after argslot address is taken!) | |
| 986 #define UNPUSH_RSI_RDI \ | |
| 987 { __ pop(rdi); __ pop(rsi); } | |
| 988 | |
| 989 // arx_argslot points both to the array and to the first output arg | |
| 990 vmarg = Address(rax_argslot, 0); | |
| 991 | |
| 992 // Get the array value. | |
| 993 Register rsi_array = rsi; | |
| 994 Register rdx_array_klass = rdx_temp; | |
| 995 BasicType elem_type = T_OBJECT; | |
| 996 int length_offset = arrayOopDesc::length_offset_in_bytes(); | |
| 997 int elem0_offset = arrayOopDesc::base_offset_in_bytes(elem_type); | |
| 998 __ movptr(rsi_array, vmarg); | |
| 999 Label skip_array_check; | |
| 1000 if (length_constant == 0) { | |
| 1001 __ testptr(rsi_array, rsi_array); | |
| 1002 __ jcc(Assembler::zero, skip_array_check); | |
| 1003 } | |
| 1004 __ null_check(rsi_array, oopDesc::klass_offset_in_bytes()); | |
| 1005 __ load_klass(rdx_array_klass, rsi_array); | |
| 1006 | |
| 1007 // Check the array type. | |
| 1008 Register rbx_klass = rbx_temp; | |
| 1009 __ movptr(rbx_klass, rcx_amh_argument); // this is a Class object! | |
| 1010 __ movptr(rbx_klass, Address(rbx_klass, java_lang_Class::klass_offset_in_bytes())); | |
| 1011 | |
| 1012 Label ok_array_klass, bad_array_klass, bad_array_length; | |
| 1013 __ check_klass_subtype(rdx_array_klass, rbx_klass, rdi, ok_array_klass); | |
| 1014 // If we get here, the type check failed! | |
| 1015 __ jmp(bad_array_klass); | |
| 1016 __ bind(ok_array_klass); | |
| 1017 | |
| 1018 // Check length. | |
| 1019 if (length_constant >= 0) { | |
| 1020 __ cmpl(Address(rsi_array, length_offset), length_constant); | |
| 1021 } else { | |
| 1022 Register rbx_vminfo = rbx_temp; | |
| 1023 __ movl(rbx_vminfo, rcx_amh_conversion); | |
| 1024 assert(CONV_VMINFO_SHIFT == 0, "preshifted"); | |
| 1025 __ andl(rbx_vminfo, CONV_VMINFO_MASK); | |
| 1026 __ cmpl(rbx_vminfo, Address(rsi_array, length_offset)); | |
| 1027 } | |
| 1028 __ jcc(Assembler::notEqual, bad_array_length); | |
| 1029 | |
| 1030 Register rdx_argslot_limit = rdx_temp; | |
| 1031 | |
| 1032 // Array length checks out. Now insert any required stack slots. | |
| 1033 if (length_constant == -1) { | |
| 1034 // Form a pointer to the end of the affected region. | |
| 1506 | 1035 __ lea(rdx_argslot_limit, Address(rax_argslot, Interpreter::stackElementSize)); |
| 710 | 1036 // 'stack_move' is negative number of words to insert |
| 1037 Register rdi_stack_move = rdi; | |
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1038 __ movl2ptr(rdi_stack_move, rcx_amh_conversion); |
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1039 __ sarptr(rdi_stack_move, CONV_STACK_MOVE_SHIFT); |
| 710 | 1040 Register rsi_temp = rsi_array; // spill this |
| 1041 insert_arg_slots(_masm, rdi_stack_move, -1, | |
| 1042 rax_argslot, rbx_temp, rsi_temp); | |
| 1043 // reload the array (since rsi was killed) | |
| 1044 __ movptr(rsi_array, vmarg); | |
| 1045 } else if (length_constant > 1) { | |
| 1046 int arg_mask = 0; | |
| 1047 int new_slots = (length_constant - 1); | |
| 1048 for (int i = 0; i < new_slots; i++) { | |
| 1049 arg_mask <<= 1; | |
| 1050 arg_mask |= _INSERT_REF_MASK; | |
| 1051 } | |
| 1052 insert_arg_slots(_masm, new_slots * stack_move_unit(), arg_mask, | |
| 1053 rax_argslot, rbx_temp, rdx_temp); | |
| 1054 } else if (length_constant == 1) { | |
| 1055 // no stack resizing required | |
| 1056 } else if (length_constant == 0) { | |
| 1057 remove_arg_slots(_masm, -stack_move_unit(), | |
| 1058 rax_argslot, rbx_temp, rdx_temp); | |
| 1059 } | |
| 1060 | |
| 1061 // Copy from the array to the new slots. | |
| 1062 // Note: Stack change code preserves integrity of rax_argslot pointer. | |
| 1063 // So even after slot insertions, rax_argslot still points to first argument. | |
| 1064 if (length_constant == -1) { | |
| 1065 // [rax_argslot, rdx_argslot_limit) is the area we are inserting into. | |
| 1066 Register rsi_source = rsi_array; | |
| 1067 __ lea(rsi_source, Address(rsi_array, elem0_offset)); | |
| 1068 Label loop; | |
| 1069 __ bind(loop); | |
| 1070 __ movptr(rbx_temp, Address(rsi_source, 0)); | |
| 1071 __ movptr(Address(rax_argslot, 0), rbx_temp); | |
| 1072 __ addptr(rsi_source, type2aelembytes(elem_type)); | |
| 1506 | 1073 __ addptr(rax_argslot, Interpreter::stackElementSize); |
| 710 | 1074 __ cmpptr(rax_argslot, rdx_argslot_limit); |
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1075 __ jccb(Assembler::less, loop); |
| 710 | 1076 } else if (length_constant == 0) { |
| 1077 __ bind(skip_array_check); | |
| 1078 // nothing to copy | |
| 1079 } else { | |
| 1080 int elem_offset = elem0_offset; | |
| 1081 int slot_offset = 0; | |
| 1082 for (int index = 0; index < length_constant; index++) { | |
| 1083 __ movptr(rbx_temp, Address(rsi_array, elem_offset)); | |
| 1084 __ movptr(Address(rax_argslot, slot_offset), rbx_temp); | |
| 1085 elem_offset += type2aelembytes(elem_type); | |
| 1506 | 1086 slot_offset += Interpreter::stackElementSize; |
| 710 | 1087 } |
| 1088 } | |
| 1089 | |
| 1090 // Arguments are spread. Move to next method handle. | |
| 1091 UNPUSH_RSI_RDI; | |
| 1092 __ movptr(rcx_recv, rcx_mh_vmtarget); | |
| 1093 __ jump_to_method_handle_entry(rcx_recv, rdx_temp); | |
| 1094 | |
| 1095 __ bind(bad_array_klass); | |
| 1096 UNPUSH_RSI_RDI; | |
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1097 __ pushptr(Address(rdx_array_klass, java_mirror_offset)); // required type |
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1098 __ pushptr(vmarg); // bad array |
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1099 __ push((int)Bytecodes::_aaload); // who is complaining? |
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1100 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
| 710 | 1101 |
| 1102 __ bind(bad_array_length); | |
| 1103 UNPUSH_RSI_RDI; | |
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1104 __ push(rcx_recv); // AMH requiring a certain length |
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1105 __ pushptr(vmarg); // bad array |
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1106 __ push((int)Bytecodes::_arraylength); // who is complaining? |
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1107 __ jump(ExternalAddress(from_interpreted_entry(_raise_exception))); |
| 710 | 1108 |
| 1109 #undef UNPUSH_RSI_RDI | |
| 1110 } | |
| 1111 break; | |
| 1112 | |
| 1113 case _adapter_flyby: | |
| 1114 case _adapter_ricochet: | |
| 1115 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 1116 break; | |
| 1117 | |
| 1118 default: ShouldNotReachHere(); | |
| 1119 } | |
| 1120 __ hlt(); | |
| 1121 | |
| 1122 address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry); | |
| 1123 __ unimplemented(entry_name(ek)); // %%% FIXME: NYI | |
| 1124 | |
| 1125 init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie)); | |
| 1126 } |