Mercurial > hg > truffle
annotate src/cpu/x86/vm/stubGenerator_x86_32.cpp @ 12962:5ccbab1c69f3
8026251: New type profiling points: parameters to methods
Summary: x86 interpreter and c1 type profiling for parameters on method entries
Reviewed-by: kvn, twisti
| author | roland |
|---|---|
| date | Tue, 22 Oct 2013 09:51:47 +0200 |
| parents | 740e263c80c6 |
| children | 58fc8e2b7b6d 00f5eff62d18 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
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26 #include "asm/macroAssembler.hpp" |
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27 #include "asm/macroAssembler.inline.hpp" |
| 1972 | 28 #include "interpreter/interpreter.hpp" |
| 29 #include "nativeInst_x86.hpp" | |
| 30 #include "oops/instanceOop.hpp" | |
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31 #include "oops/method.hpp" |
| 1972 | 32 #include "oops/objArrayKlass.hpp" |
| 33 #include "oops/oop.inline.hpp" | |
| 34 #include "prims/methodHandles.hpp" | |
| 35 #include "runtime/frame.inline.hpp" | |
| 36 #include "runtime/handles.inline.hpp" | |
| 37 #include "runtime/sharedRuntime.hpp" | |
| 38 #include "runtime/stubCodeGenerator.hpp" | |
| 39 #include "runtime/stubRoutines.hpp" | |
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40 #include "runtime/thread.inline.hpp" |
| 1972 | 41 #include "utilities/top.hpp" |
| 42 #ifdef COMPILER2 | |
| 43 #include "opto/runtime.hpp" | |
| 44 #endif | |
| 0 | 45 |
| 46 // Declaration and definition of StubGenerator (no .hpp file). | |
| 47 // For a more detailed description of the stub routine structure | |
| 48 // see the comment in stubRoutines.hpp | |
| 49 | |
| 50 #define __ _masm-> | |
| 304 | 51 #define a__ ((Assembler*)_masm)-> |
| 0 | 52 |
| 53 #ifdef PRODUCT | |
| 54 #define BLOCK_COMMENT(str) /* nothing */ | |
| 55 #else | |
| 56 #define BLOCK_COMMENT(str) __ block_comment(str) | |
| 57 #endif | |
| 58 | |
| 59 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") | |
| 60 | |
| 61 const int MXCSR_MASK = 0xFFC0; // Mask out any pending exceptions | |
| 62 const int FPU_CNTRL_WRD_MASK = 0xFFFF; | |
| 63 | |
| 64 // ------------------------------------------------------------------------------------------------------------------------- | |
| 65 // Stub Code definitions | |
| 66 | |
| 67 static address handle_unsafe_access() { | |
| 68 JavaThread* thread = JavaThread::current(); | |
| 69 address pc = thread->saved_exception_pc(); | |
| 70 // pc is the instruction which we must emulate | |
| 71 // doing a no-op is fine: return garbage from the load | |
| 72 // therefore, compute npc | |
| 73 address npc = Assembler::locate_next_instruction(pc); | |
| 74 | |
| 75 // request an async exception | |
| 76 thread->set_pending_unsafe_access_error(); | |
| 77 | |
| 78 // return address of next instruction to execute | |
| 79 return npc; | |
| 80 } | |
| 81 | |
| 82 class StubGenerator: public StubCodeGenerator { | |
| 83 private: | |
| 84 | |
| 85 #ifdef PRODUCT | |
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86 #define inc_counter_np(counter) ((void)0) |
| 0 | 87 #else |
| 88 void inc_counter_np_(int& counter) { | |
| 304 | 89 __ incrementl(ExternalAddress((address)&counter)); |
| 0 | 90 } |
| 91 #define inc_counter_np(counter) \ | |
| 92 BLOCK_COMMENT("inc_counter " #counter); \ | |
| 93 inc_counter_np_(counter); | |
| 94 #endif //PRODUCT | |
| 95 | |
| 96 void inc_copy_counter_np(BasicType t) { | |
| 97 #ifndef PRODUCT | |
| 98 switch (t) { | |
| 99 case T_BYTE: inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); return; | |
| 100 case T_SHORT: inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); return; | |
| 101 case T_INT: inc_counter_np(SharedRuntime::_jint_array_copy_ctr); return; | |
| 102 case T_LONG: inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); return; | |
| 103 case T_OBJECT: inc_counter_np(SharedRuntime::_oop_array_copy_ctr); return; | |
| 104 } | |
| 105 ShouldNotReachHere(); | |
| 106 #endif //PRODUCT | |
| 107 } | |
| 108 | |
| 109 //------------------------------------------------------------------------------------------------------------------------ | |
| 110 // Call stubs are used to call Java from C | |
| 111 // | |
| 112 // [ return_from_Java ] <--- rsp | |
| 113 // [ argument word n ] | |
| 114 // ... | |
| 115 // -N [ argument word 1 ] | |
| 116 // -7 [ Possible padding for stack alignment ] | |
| 117 // -6 [ Possible padding for stack alignment ] | |
| 118 // -5 [ Possible padding for stack alignment ] | |
| 119 // -4 [ mxcsr save ] <--- rsp_after_call | |
| 120 // -3 [ saved rbx, ] | |
| 121 // -2 [ saved rsi ] | |
| 122 // -1 [ saved rdi ] | |
| 123 // 0 [ saved rbp, ] <--- rbp, | |
| 124 // 1 [ return address ] | |
| 125 // 2 [ ptr. to call wrapper ] | |
| 126 // 3 [ result ] | |
| 127 // 4 [ result_type ] | |
| 128 // 5 [ method ] | |
| 129 // 6 [ entry_point ] | |
| 130 // 7 [ parameters ] | |
| 131 // 8 [ parameter_size ] | |
| 132 // 9 [ thread ] | |
| 133 | |
| 134 | |
| 135 address generate_call_stub(address& return_address) { | |
| 136 StubCodeMark mark(this, "StubRoutines", "call_stub"); | |
| 137 address start = __ pc(); | |
| 138 | |
| 139 // stub code parameters / addresses | |
| 140 assert(frame::entry_frame_call_wrapper_offset == 2, "adjust this code"); | |
| 141 bool sse_save = false; | |
| 142 const Address rsp_after_call(rbp, -4 * wordSize); // same as in generate_catch_exception()! | |
| 143 const int locals_count_in_bytes (4*wordSize); | |
| 144 const Address mxcsr_save (rbp, -4 * wordSize); | |
| 145 const Address saved_rbx (rbp, -3 * wordSize); | |
| 146 const Address saved_rsi (rbp, -2 * wordSize); | |
| 147 const Address saved_rdi (rbp, -1 * wordSize); | |
| 148 const Address result (rbp, 3 * wordSize); | |
| 149 const Address result_type (rbp, 4 * wordSize); | |
| 150 const Address method (rbp, 5 * wordSize); | |
| 151 const Address entry_point (rbp, 6 * wordSize); | |
| 152 const Address parameters (rbp, 7 * wordSize); | |
| 153 const Address parameter_size(rbp, 8 * wordSize); | |
| 154 const Address thread (rbp, 9 * wordSize); // same as in generate_catch_exception()! | |
| 155 sse_save = UseSSE > 0; | |
| 156 | |
| 157 // stub code | |
| 158 __ enter(); | |
| 304 | 159 __ movptr(rcx, parameter_size); // parameter counter |
| 1506 | 160 __ shlptr(rcx, Interpreter::logStackElementSize); // convert parameter count to bytes |
| 304 | 161 __ addptr(rcx, locals_count_in_bytes); // reserve space for register saves |
| 162 __ subptr(rsp, rcx); | |
| 163 __ andptr(rsp, -(StackAlignmentInBytes)); // Align stack | |
| 0 | 164 |
| 165 // save rdi, rsi, & rbx, according to C calling conventions | |
| 304 | 166 __ movptr(saved_rdi, rdi); |
| 167 __ movptr(saved_rsi, rsi); | |
| 168 __ movptr(saved_rbx, rbx); | |
| 0 | 169 // save and initialize %mxcsr |
| 170 if (sse_save) { | |
| 171 Label skip_ldmx; | |
| 172 __ stmxcsr(mxcsr_save); | |
| 173 __ movl(rax, mxcsr_save); | |
| 174 __ andl(rax, MXCSR_MASK); // Only check control and mask bits | |
| 175 ExternalAddress mxcsr_std(StubRoutines::addr_mxcsr_std()); | |
| 176 __ cmp32(rax, mxcsr_std); | |
| 177 __ jcc(Assembler::equal, skip_ldmx); | |
| 178 __ ldmxcsr(mxcsr_std); | |
| 179 __ bind(skip_ldmx); | |
| 180 } | |
| 181 | |
| 182 // make sure the control word is correct. | |
| 183 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); | |
| 184 | |
| 185 #ifdef ASSERT | |
| 186 // make sure we have no pending exceptions | |
| 187 { Label L; | |
| 304 | 188 __ movptr(rcx, thread); |
| 189 __ cmpptr(Address(rcx, Thread::pending_exception_offset()), (int32_t)NULL_WORD); | |
| 0 | 190 __ jcc(Assembler::equal, L); |
| 191 __ stop("StubRoutines::call_stub: entered with pending exception"); | |
| 192 __ bind(L); | |
| 193 } | |
| 194 #endif | |
| 195 | |
| 196 // pass parameters if any | |
| 197 BLOCK_COMMENT("pass parameters if any"); | |
| 198 Label parameters_done; | |
| 199 __ movl(rcx, parameter_size); // parameter counter | |
| 200 __ testl(rcx, rcx); | |
| 201 __ jcc(Assembler::zero, parameters_done); | |
| 202 | |
| 203 // parameter passing loop | |
| 204 | |
| 205 Label loop; | |
| 206 // Copy Java parameters in reverse order (receiver last) | |
| 207 // Note that the argument order is inverted in the process | |
| 208 // source is rdx[rcx: N-1..0] | |
| 209 // dest is rsp[rbx: 0..N-1] | |
| 210 | |
| 304 | 211 __ movptr(rdx, parameters); // parameter pointer |
| 212 __ xorptr(rbx, rbx); | |
| 0 | 213 |
| 214 __ BIND(loop); | |
| 215 | |
| 216 // get parameter | |
| 304 | 217 __ movptr(rax, Address(rdx, rcx, Interpreter::stackElementScale(), -wordSize)); |
| 218 __ movptr(Address(rsp, rbx, Interpreter::stackElementScale(), | |
| 0 | 219 Interpreter::expr_offset_in_bytes(0)), rax); // store parameter |
| 220 __ increment(rbx); | |
| 221 __ decrement(rcx); | |
| 222 __ jcc(Assembler::notZero, loop); | |
| 223 | |
| 224 // call Java function | |
| 225 __ BIND(parameters_done); | |
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226 __ movptr(rbx, method); // get Method* |
| 304 | 227 __ movptr(rax, entry_point); // get entry_point |
| 228 __ mov(rsi, rsp); // set sender sp | |
| 0 | 229 BLOCK_COMMENT("call Java function"); |
| 230 __ call(rax); | |
| 231 | |
| 232 BLOCK_COMMENT("call_stub_return_address:"); | |
| 233 return_address = __ pc(); | |
| 234 | |
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235 #ifdef COMPILER2 |
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236 { |
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237 Label L_skip; |
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238 if (UseSSE >= 2) { |
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239 __ verify_FPU(0, "call_stub_return"); |
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240 } else { |
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241 for (int i = 1; i < 8; i++) { |
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242 __ ffree(i); |
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243 } |
| 0 | 244 |
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245 // UseSSE <= 1 so double result should be left on TOS |
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246 __ movl(rsi, result_type); |
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247 __ cmpl(rsi, T_DOUBLE); |
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248 __ jcc(Assembler::equal, L_skip); |
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249 if (UseSSE == 0) { |
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250 // UseSSE == 0 so float result should be left on TOS |
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251 __ cmpl(rsi, T_FLOAT); |
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252 __ jcc(Assembler::equal, L_skip); |
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253 } |
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254 __ ffree(0); |
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255 } |
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256 __ BIND(L_skip); |
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257 } |
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258 #endif // COMPILER2 |
| 0 | 259 |
| 260 // store result depending on type | |
| 261 // (everything that is not T_LONG, T_FLOAT or T_DOUBLE is treated as T_INT) | |
| 304 | 262 __ movptr(rdi, result); |
| 0 | 263 Label is_long, is_float, is_double, exit; |
| 264 __ movl(rsi, result_type); | |
| 265 __ cmpl(rsi, T_LONG); | |
| 266 __ jcc(Assembler::equal, is_long); | |
| 267 __ cmpl(rsi, T_FLOAT); | |
| 268 __ jcc(Assembler::equal, is_float); | |
| 269 __ cmpl(rsi, T_DOUBLE); | |
| 270 __ jcc(Assembler::equal, is_double); | |
| 271 | |
| 272 // handle T_INT case | |
| 273 __ movl(Address(rdi, 0), rax); | |
| 274 __ BIND(exit); | |
| 275 | |
| 276 // check that FPU stack is empty | |
| 277 __ verify_FPU(0, "generate_call_stub"); | |
| 278 | |
| 279 // pop parameters | |
| 304 | 280 __ lea(rsp, rsp_after_call); |
| 0 | 281 |
| 282 // restore %mxcsr | |
| 283 if (sse_save) { | |
| 284 __ ldmxcsr(mxcsr_save); | |
| 285 } | |
| 286 | |
| 287 // restore rdi, rsi and rbx, | |
| 304 | 288 __ movptr(rbx, saved_rbx); |
| 289 __ movptr(rsi, saved_rsi); | |
| 290 __ movptr(rdi, saved_rdi); | |
| 291 __ addptr(rsp, 4*wordSize); | |
| 0 | 292 |
| 293 // return | |
| 304 | 294 __ pop(rbp); |
| 0 | 295 __ ret(0); |
| 296 | |
| 297 // handle return types different from T_INT | |
| 298 __ BIND(is_long); | |
| 299 __ movl(Address(rdi, 0 * wordSize), rax); | |
| 300 __ movl(Address(rdi, 1 * wordSize), rdx); | |
| 301 __ jmp(exit); | |
| 302 | |
| 303 __ BIND(is_float); | |
| 304 // interpreter uses xmm0 for return values | |
| 305 if (UseSSE >= 1) { | |
| 306 __ movflt(Address(rdi, 0), xmm0); | |
| 307 } else { | |
| 308 __ fstp_s(Address(rdi, 0)); | |
| 309 } | |
| 310 __ jmp(exit); | |
| 311 | |
| 312 __ BIND(is_double); | |
| 313 // interpreter uses xmm0 for return values | |
| 314 if (UseSSE >= 2) { | |
| 315 __ movdbl(Address(rdi, 0), xmm0); | |
| 316 } else { | |
| 317 __ fstp_d(Address(rdi, 0)); | |
| 318 } | |
| 319 __ jmp(exit); | |
| 320 | |
| 321 return start; | |
| 322 } | |
| 323 | |
| 324 | |
| 325 //------------------------------------------------------------------------------------------------------------------------ | |
| 326 // Return point for a Java call if there's an exception thrown in Java code. | |
| 327 // The exception is caught and transformed into a pending exception stored in | |
| 328 // JavaThread that can be tested from within the VM. | |
| 329 // | |
| 330 // Note: Usually the parameters are removed by the callee. In case of an exception | |
| 331 // crossing an activation frame boundary, that is not the case if the callee | |
| 332 // is compiled code => need to setup the rsp. | |
| 333 // | |
| 334 // rax,: exception oop | |
| 335 | |
| 336 address generate_catch_exception() { | |
| 337 StubCodeMark mark(this, "StubRoutines", "catch_exception"); | |
| 338 const Address rsp_after_call(rbp, -4 * wordSize); // same as in generate_call_stub()! | |
| 339 const Address thread (rbp, 9 * wordSize); // same as in generate_call_stub()! | |
| 340 address start = __ pc(); | |
| 341 | |
| 342 // get thread directly | |
| 304 | 343 __ movptr(rcx, thread); |
| 0 | 344 #ifdef ASSERT |
| 345 // verify that threads correspond | |
| 346 { Label L; | |
| 347 __ get_thread(rbx); | |
| 304 | 348 __ cmpptr(rbx, rcx); |
| 0 | 349 __ jcc(Assembler::equal, L); |
| 350 __ stop("StubRoutines::catch_exception: threads must correspond"); | |
| 351 __ bind(L); | |
| 352 } | |
| 353 #endif | |
| 354 // set pending exception | |
| 355 __ verify_oop(rax); | |
| 304 | 356 __ movptr(Address(rcx, Thread::pending_exception_offset()), rax ); |
| 0 | 357 __ lea(Address(rcx, Thread::exception_file_offset ()), |
| 358 ExternalAddress((address)__FILE__)); | |
| 359 __ movl(Address(rcx, Thread::exception_line_offset ()), __LINE__ ); | |
| 360 // complete return to VM | |
| 361 assert(StubRoutines::_call_stub_return_address != NULL, "_call_stub_return_address must have been generated before"); | |
| 362 __ jump(RuntimeAddress(StubRoutines::_call_stub_return_address)); | |
| 363 | |
| 364 return start; | |
| 365 } | |
| 366 | |
| 367 | |
| 368 //------------------------------------------------------------------------------------------------------------------------ | |
| 369 // Continuation point for runtime calls returning with a pending exception. | |
| 370 // The pending exception check happened in the runtime or native call stub. | |
| 371 // The pending exception in Thread is converted into a Java-level exception. | |
| 372 // | |
| 373 // Contract with Java-level exception handlers: | |
| 1295 | 374 // rax: exception |
| 0 | 375 // rdx: throwing pc |
| 376 // | |
| 377 // NOTE: At entry of this stub, exception-pc must be on stack !! | |
| 378 | |
| 379 address generate_forward_exception() { | |
| 380 StubCodeMark mark(this, "StubRoutines", "forward exception"); | |
| 381 address start = __ pc(); | |
| 1295 | 382 const Register thread = rcx; |
| 383 | |
| 384 // other registers used in this stub | |
| 385 const Register exception_oop = rax; | |
| 386 const Register handler_addr = rbx; | |
| 387 const Register exception_pc = rdx; | |
| 0 | 388 |
| 389 // Upon entry, the sp points to the return address returning into Java | |
| 390 // (interpreted or compiled) code; i.e., the return address becomes the | |
| 391 // throwing pc. | |
| 392 // | |
| 393 // Arguments pushed before the runtime call are still on the stack but | |
| 394 // the exception handler will reset the stack pointer -> ignore them. | |
| 395 // A potential result in registers can be ignored as well. | |
| 396 | |
| 397 #ifdef ASSERT | |
| 398 // make sure this code is only executed if there is a pending exception | |
| 399 { Label L; | |
| 1295 | 400 __ get_thread(thread); |
| 401 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); | |
| 0 | 402 __ jcc(Assembler::notEqual, L); |
| 403 __ stop("StubRoutines::forward exception: no pending exception (1)"); | |
| 404 __ bind(L); | |
| 405 } | |
| 406 #endif | |
| 407 | |
| 408 // compute exception handler into rbx, | |
| 1295 | 409 __ get_thread(thread); |
| 410 __ movptr(exception_pc, Address(rsp, 0)); | |
| 0 | 411 BLOCK_COMMENT("call exception_handler_for_return_address"); |
| 1295 | 412 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), thread, exception_pc); |
| 413 __ mov(handler_addr, rax); | |
| 0 | 414 |
| 1295 | 415 // setup rax & rdx, remove return address & clear pending exception |
| 416 __ get_thread(thread); | |
| 417 __ pop(exception_pc); | |
| 418 __ movptr(exception_oop, Address(thread, Thread::pending_exception_offset())); | |
| 419 __ movptr(Address(thread, Thread::pending_exception_offset()), NULL_WORD); | |
| 0 | 420 |
| 421 #ifdef ASSERT | |
| 422 // make sure exception is set | |
| 423 { Label L; | |
| 1295 | 424 __ testptr(exception_oop, exception_oop); |
| 0 | 425 __ jcc(Assembler::notEqual, L); |
| 426 __ stop("StubRoutines::forward exception: no pending exception (2)"); | |
| 427 __ bind(L); | |
| 428 } | |
| 429 #endif | |
| 430 | |
| 1295 | 431 // Verify that there is really a valid exception in RAX. |
| 432 __ verify_oop(exception_oop); | |
| 433 | |
| 0 | 434 // continue at exception handler (return address removed) |
| 1295 | 435 // rax: exception |
| 436 // rbx: exception handler | |
| 0 | 437 // rdx: throwing pc |
| 1295 | 438 __ jmp(handler_addr); |
| 0 | 439 |
| 440 return start; | |
| 441 } | |
| 442 | |
| 443 | |
| 444 //---------------------------------------------------------------------------------------------------- | |
| 445 // Support for jint Atomic::xchg(jint exchange_value, volatile jint* dest) | |
| 446 // | |
| 447 // xchg exists as far back as 8086, lock needed for MP only | |
| 448 // Stack layout immediately after call: | |
| 449 // | |
| 450 // 0 [ret addr ] <--- rsp | |
| 451 // 1 [ ex ] | |
| 452 // 2 [ dest ] | |
| 453 // | |
| 454 // Result: *dest <- ex, return (old *dest) | |
| 455 // | |
| 456 // Note: win32 does not currently use this code | |
| 457 | |
| 458 address generate_atomic_xchg() { | |
| 459 StubCodeMark mark(this, "StubRoutines", "atomic_xchg"); | |
| 460 address start = __ pc(); | |
| 461 | |
| 304 | 462 __ push(rdx); |
| 0 | 463 Address exchange(rsp, 2 * wordSize); |
| 464 Address dest_addr(rsp, 3 * wordSize); | |
| 465 __ movl(rax, exchange); | |
| 304 | 466 __ movptr(rdx, dest_addr); |
| 467 __ xchgl(rax, Address(rdx, 0)); | |
| 468 __ pop(rdx); | |
| 0 | 469 __ ret(0); |
| 470 | |
| 471 return start; | |
| 472 } | |
| 473 | |
| 474 //---------------------------------------------------------------------------------------------------- | |
| 475 // Support for void verify_mxcsr() | |
| 476 // | |
| 477 // This routine is used with -Xcheck:jni to verify that native | |
| 478 // JNI code does not return to Java code without restoring the | |
| 479 // MXCSR register to our expected state. | |
| 480 | |
| 481 | |
| 482 address generate_verify_mxcsr() { | |
| 483 StubCodeMark mark(this, "StubRoutines", "verify_mxcsr"); | |
| 484 address start = __ pc(); | |
| 485 | |
| 486 const Address mxcsr_save(rsp, 0); | |
| 487 | |
| 488 if (CheckJNICalls && UseSSE > 0 ) { | |
| 489 Label ok_ret; | |
| 490 ExternalAddress mxcsr_std(StubRoutines::addr_mxcsr_std()); | |
| 304 | 491 __ push(rax); |
| 492 __ subptr(rsp, wordSize); // allocate a temp location | |
| 0 | 493 __ stmxcsr(mxcsr_save); |
| 494 __ movl(rax, mxcsr_save); | |
| 495 __ andl(rax, MXCSR_MASK); | |
| 496 __ cmp32(rax, mxcsr_std); | |
| 497 __ jcc(Assembler::equal, ok_ret); | |
| 498 | |
| 499 __ warn("MXCSR changed by native JNI code."); | |
| 500 | |
| 501 __ ldmxcsr(mxcsr_std); | |
| 502 | |
| 503 __ bind(ok_ret); | |
| 304 | 504 __ addptr(rsp, wordSize); |
| 505 __ pop(rax); | |
| 0 | 506 } |
| 507 | |
| 508 __ ret(0); | |
| 509 | |
| 510 return start; | |
| 511 } | |
| 512 | |
| 513 | |
| 514 //--------------------------------------------------------------------------- | |
| 515 // Support for void verify_fpu_cntrl_wrd() | |
| 516 // | |
| 517 // This routine is used with -Xcheck:jni to verify that native | |
| 518 // JNI code does not return to Java code without restoring the | |
| 519 // FP control word to our expected state. | |
| 520 | |
| 521 address generate_verify_fpu_cntrl_wrd() { | |
| 522 StubCodeMark mark(this, "StubRoutines", "verify_spcw"); | |
| 523 address start = __ pc(); | |
| 524 | |
| 525 const Address fpu_cntrl_wrd_save(rsp, 0); | |
| 526 | |
| 527 if (CheckJNICalls) { | |
| 528 Label ok_ret; | |
| 304 | 529 __ push(rax); |
| 530 __ subptr(rsp, wordSize); // allocate a temp location | |
| 0 | 531 __ fnstcw(fpu_cntrl_wrd_save); |
| 532 __ movl(rax, fpu_cntrl_wrd_save); | |
| 533 __ andl(rax, FPU_CNTRL_WRD_MASK); | |
| 534 ExternalAddress fpu_std(StubRoutines::addr_fpu_cntrl_wrd_std()); | |
| 535 __ cmp32(rax, fpu_std); | |
| 536 __ jcc(Assembler::equal, ok_ret); | |
| 537 | |
| 538 __ warn("Floating point control word changed by native JNI code."); | |
| 539 | |
| 540 __ fldcw(fpu_std); | |
| 541 | |
| 542 __ bind(ok_ret); | |
| 304 | 543 __ addptr(rsp, wordSize); |
| 544 __ pop(rax); | |
| 0 | 545 } |
| 546 | |
| 547 __ ret(0); | |
| 548 | |
| 549 return start; | |
| 550 } | |
| 551 | |
| 552 //--------------------------------------------------------------------------- | |
| 553 // Wrapper for slow-case handling of double-to-integer conversion | |
| 554 // d2i or f2i fast case failed either because it is nan or because | |
| 555 // of under/overflow. | |
| 556 // Input: FPU TOS: float value | |
| 557 // Output: rax, (rdx): integer (long) result | |
| 558 | |
| 559 address generate_d2i_wrapper(BasicType t, address fcn) { | |
| 560 StubCodeMark mark(this, "StubRoutines", "d2i_wrapper"); | |
| 561 address start = __ pc(); | |
| 562 | |
| 563 // Capture info about frame layout | |
| 564 enum layout { FPUState_off = 0, | |
| 565 rbp_off = FPUStateSizeInWords, | |
| 566 rdi_off, | |
| 567 rsi_off, | |
| 568 rcx_off, | |
| 569 rbx_off, | |
| 570 saved_argument_off, | |
| 571 saved_argument_off2, // 2nd half of double | |
| 572 framesize | |
| 573 }; | |
| 574 | |
| 575 assert(FPUStateSizeInWords == 27, "update stack layout"); | |
| 576 | |
| 577 // Save outgoing argument to stack across push_FPU_state() | |
| 304 | 578 __ subptr(rsp, wordSize * 2); |
| 0 | 579 __ fstp_d(Address(rsp, 0)); |
| 580 | |
| 581 // Save CPU & FPU state | |
| 304 | 582 __ push(rbx); |
| 583 __ push(rcx); | |
| 584 __ push(rsi); | |
| 585 __ push(rdi); | |
| 586 __ push(rbp); | |
| 0 | 587 __ push_FPU_state(); |
| 588 | |
| 589 // push_FPU_state() resets the FP top of stack | |
| 590 // Load original double into FP top of stack | |
| 591 __ fld_d(Address(rsp, saved_argument_off * wordSize)); | |
| 592 // Store double into stack as outgoing argument | |
| 304 | 593 __ subptr(rsp, wordSize*2); |
| 0 | 594 __ fst_d(Address(rsp, 0)); |
| 595 | |
| 596 // Prepare FPU for doing math in C-land | |
| 597 __ empty_FPU_stack(); | |
| 598 // Call the C code to massage the double. Result in EAX | |
| 599 if (t == T_INT) | |
| 600 { BLOCK_COMMENT("SharedRuntime::d2i"); } | |
| 601 else if (t == T_LONG) | |
| 602 { BLOCK_COMMENT("SharedRuntime::d2l"); } | |
| 603 __ call_VM_leaf( fcn, 2 ); | |
| 604 | |
| 605 // Restore CPU & FPU state | |
| 606 __ pop_FPU_state(); | |
| 304 | 607 __ pop(rbp); |
| 608 __ pop(rdi); | |
| 609 __ pop(rsi); | |
| 610 __ pop(rcx); | |
| 611 __ pop(rbx); | |
| 612 __ addptr(rsp, wordSize * 2); | |
| 0 | 613 |
| 614 __ ret(0); | |
| 615 | |
| 616 return start; | |
| 617 } | |
| 618 | |
| 619 | |
| 620 //--------------------------------------------------------------------------- | |
| 621 // The following routine generates a subroutine to throw an asynchronous | |
| 622 // UnknownError when an unsafe access gets a fault that could not be | |
| 623 // reasonably prevented by the programmer. (Example: SIGBUS/OBJERR.) | |
| 624 address generate_handler_for_unsafe_access() { | |
| 625 StubCodeMark mark(this, "StubRoutines", "handler_for_unsafe_access"); | |
| 626 address start = __ pc(); | |
| 627 | |
| 304 | 628 __ push(0); // hole for return address-to-be |
| 629 __ pusha(); // push registers | |
| 0 | 630 Address next_pc(rsp, RegisterImpl::number_of_registers * BytesPerWord); |
| 631 BLOCK_COMMENT("call handle_unsafe_access"); | |
| 632 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, handle_unsafe_access))); | |
| 304 | 633 __ movptr(next_pc, rax); // stuff next address |
| 634 __ popa(); | |
| 0 | 635 __ ret(0); // jump to next address |
| 636 | |
| 637 return start; | |
| 638 } | |
| 639 | |
| 640 | |
| 641 //---------------------------------------------------------------------------------------------------- | |
| 642 // Non-destructive plausibility checks for oops | |
| 643 | |
| 644 address generate_verify_oop() { | |
| 645 StubCodeMark mark(this, "StubRoutines", "verify_oop"); | |
| 646 address start = __ pc(); | |
| 647 | |
| 648 // Incoming arguments on stack after saving rax,: | |
| 649 // | |
| 650 // [tos ]: saved rdx | |
| 651 // [tos + 1]: saved EFLAGS | |
| 652 // [tos + 2]: return address | |
| 653 // [tos + 3]: char* error message | |
| 654 // [tos + 4]: oop object to verify | |
| 655 // [tos + 5]: saved rax, - saved by caller and bashed | |
| 656 | |
| 657 Label exit, error; | |
| 304 | 658 __ pushf(); |
| 659 __ incrementl(ExternalAddress((address) StubRoutines::verify_oop_count_addr())); | |
| 660 __ push(rdx); // save rdx | |
| 0 | 661 // make sure object is 'reasonable' |
| 304 | 662 __ movptr(rax, Address(rsp, 4 * wordSize)); // get object |
| 663 __ testptr(rax, rax); | |
| 0 | 664 __ jcc(Assembler::zero, exit); // if obj is NULL it is ok |
| 665 | |
| 666 // Check if the oop is in the right area of memory | |
| 667 const int oop_mask = Universe::verify_oop_mask(); | |
| 668 const int oop_bits = Universe::verify_oop_bits(); | |
| 304 | 669 __ mov(rdx, rax); |
| 670 __ andptr(rdx, oop_mask); | |
| 671 __ cmpptr(rdx, oop_bits); | |
| 0 | 672 __ jcc(Assembler::notZero, error); |
| 673 | |
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674 // make sure klass is 'reasonable', which is not zero. |
| 304 | 675 __ movptr(rax, Address(rax, oopDesc::klass_offset_in_bytes())); // get klass |
| 676 __ testptr(rax, rax); | |
| 0 | 677 __ jcc(Assembler::zero, error); // if klass is NULL it is broken |
| 678 | |
| 679 // return if everything seems ok | |
| 680 __ bind(exit); | |
| 304 | 681 __ movptr(rax, Address(rsp, 5 * wordSize)); // get saved rax, back |
| 682 __ pop(rdx); // restore rdx | |
| 683 __ popf(); // restore EFLAGS | |
| 0 | 684 __ ret(3 * wordSize); // pop arguments |
| 685 | |
| 686 // handle errors | |
| 687 __ bind(error); | |
| 304 | 688 __ movptr(rax, Address(rsp, 5 * wordSize)); // get saved rax, back |
| 689 __ pop(rdx); // get saved rdx back | |
| 690 __ popf(); // get saved EFLAGS off stack -- will be ignored | |
| 691 __ pusha(); // push registers (eip = return address & msg are already pushed) | |
| 0 | 692 BLOCK_COMMENT("call MacroAssembler::debug"); |
| 304 | 693 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, MacroAssembler::debug32))); |
| 694 __ popa(); | |
| 0 | 695 __ ret(3 * wordSize); // pop arguments |
| 696 return start; | |
| 697 } | |
| 698 | |
| 699 // | |
| 700 // Generate pre-barrier for array stores | |
| 701 // | |
| 702 // Input: | |
| 703 // start - starting address | |
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704 // count - element count |
| 2324 | 705 void gen_write_ref_array_pre_barrier(Register start, Register count, bool uninitialized_target) { |
| 0 | 706 assert_different_registers(start, count); |
| 707 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 708 switch (bs->kind()) { | |
| 709 case BarrierSet::G1SATBCT: | |
| 710 case BarrierSet::G1SATBCTLogging: | |
| 2324 | 711 // With G1, don't generate the call if we statically know that the target in uninitialized |
| 712 if (!uninitialized_target) { | |
| 713 __ pusha(); // push registers | |
| 714 __ call_VM_leaf(CAST_FROM_FN_PTR(address, BarrierSet::static_write_ref_array_pre), | |
| 715 start, count); | |
| 716 __ popa(); | |
| 717 } | |
| 0 | 718 break; |
| 719 case BarrierSet::CardTableModRef: | |
| 720 case BarrierSet::CardTableExtension: | |
| 721 case BarrierSet::ModRef: | |
| 722 break; | |
| 723 default : | |
| 724 ShouldNotReachHere(); | |
| 725 | |
| 726 } | |
| 727 } | |
| 728 | |
| 729 | |
| 730 // | |
| 731 // Generate a post-barrier for an array store | |
| 732 // | |
| 733 // start - starting address | |
| 734 // count - element count | |
| 735 // | |
| 736 // The two input registers are overwritten. | |
| 737 // | |
| 738 void gen_write_ref_array_post_barrier(Register start, Register count) { | |
| 739 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 740 assert_different_registers(start, count); | |
| 741 switch (bs->kind()) { | |
| 742 case BarrierSet::G1SATBCT: | |
| 743 case BarrierSet::G1SATBCTLogging: | |
| 744 { | |
| 304 | 745 __ pusha(); // push registers |
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746 __ call_VM_leaf(CAST_FROM_FN_PTR(address, BarrierSet::static_write_ref_array_post), |
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747 start, count); |
| 304 | 748 __ popa(); |
| 0 | 749 } |
| 750 break; | |
| 751 | |
| 752 case BarrierSet::CardTableModRef: | |
| 753 case BarrierSet::CardTableExtension: | |
| 754 { | |
| 755 CardTableModRefBS* ct = (CardTableModRefBS*)bs; | |
| 756 assert(sizeof(*ct->byte_map_base) == sizeof(jbyte), "adjust this code"); | |
| 757 | |
| 758 Label L_loop; | |
| 759 const Register end = count; // elements count; end == start+count-1 | |
| 760 assert_different_registers(start, end); | |
| 761 | |
| 304 | 762 __ lea(end, Address(start, count, Address::times_ptr, -wordSize)); |
| 763 __ shrptr(start, CardTableModRefBS::card_shift); | |
| 764 __ shrptr(end, CardTableModRefBS::card_shift); | |
| 765 __ subptr(end, start); // end --> count | |
| 0 | 766 __ BIND(L_loop); |
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767 intptr_t disp = (intptr_t) ct->byte_map_base; |
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768 Address cardtable(start, count, Address::times_1, disp); |
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769 __ movb(cardtable, 0); |
| 0 | 770 __ decrement(count); |
| 771 __ jcc(Assembler::greaterEqual, L_loop); | |
| 772 } | |
| 773 break; | |
| 774 case BarrierSet::ModRef: | |
| 775 break; | |
| 776 default : | |
| 777 ShouldNotReachHere(); | |
| 778 | |
| 779 } | |
| 780 } | |
| 781 | |
| 405 | 782 |
| 783 // Copy 64 bytes chunks | |
| 784 // | |
| 785 // Inputs: | |
| 786 // from - source array address | |
| 787 // to_from - destination array address - from | |
| 788 // qword_count - 8-bytes element count, negative | |
| 789 // | |
| 790 void xmm_copy_forward(Register from, Register to_from, Register qword_count) { | |
| 791 assert( UseSSE >= 2, "supported cpu only" ); | |
| 792 Label L_copy_64_bytes_loop, L_copy_64_bytes, L_copy_8_bytes, L_exit; | |
| 793 // Copy 64-byte chunks | |
| 794 __ jmpb(L_copy_64_bytes); | |
| 1365 | 795 __ align(OptoLoopAlignment); |
| 405 | 796 __ BIND(L_copy_64_bytes_loop); |
| 797 | |
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798 if (UseUnalignedLoadStores) { |
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799 if (UseAVX >= 2) { |
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800 __ vmovdqu(xmm0, Address(from, 0)); |
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801 __ vmovdqu(Address(from, to_from, Address::times_1, 0), xmm0); |
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802 __ vmovdqu(xmm1, Address(from, 32)); |
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803 __ vmovdqu(Address(from, to_from, Address::times_1, 32), xmm1); |
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804 } else { |
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805 __ movdqu(xmm0, Address(from, 0)); |
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806 __ movdqu(Address(from, to_from, Address::times_1, 0), xmm0); |
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807 __ movdqu(xmm1, Address(from, 16)); |
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808 __ movdqu(Address(from, to_from, Address::times_1, 16), xmm1); |
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809 __ movdqu(xmm2, Address(from, 32)); |
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810 __ movdqu(Address(from, to_from, Address::times_1, 32), xmm2); |
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811 __ movdqu(xmm3, Address(from, 48)); |
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812 __ movdqu(Address(from, to_from, Address::times_1, 48), xmm3); |
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813 } |
| 405 | 814 } else { |
| 815 __ movq(xmm0, Address(from, 0)); | |
| 816 __ movq(Address(from, to_from, Address::times_1, 0), xmm0); | |
| 817 __ movq(xmm1, Address(from, 8)); | |
| 818 __ movq(Address(from, to_from, Address::times_1, 8), xmm1); | |
| 819 __ movq(xmm2, Address(from, 16)); | |
| 820 __ movq(Address(from, to_from, Address::times_1, 16), xmm2); | |
| 821 __ movq(xmm3, Address(from, 24)); | |
| 822 __ movq(Address(from, to_from, Address::times_1, 24), xmm3); | |
| 823 __ movq(xmm4, Address(from, 32)); | |
| 824 __ movq(Address(from, to_from, Address::times_1, 32), xmm4); | |
| 825 __ movq(xmm5, Address(from, 40)); | |
| 826 __ movq(Address(from, to_from, Address::times_1, 40), xmm5); | |
| 827 __ movq(xmm6, Address(from, 48)); | |
| 828 __ movq(Address(from, to_from, Address::times_1, 48), xmm6); | |
| 829 __ movq(xmm7, Address(from, 56)); | |
| 830 __ movq(Address(from, to_from, Address::times_1, 56), xmm7); | |
| 831 } | |
| 832 | |
| 833 __ addl(from, 64); | |
| 834 __ BIND(L_copy_64_bytes); | |
| 835 __ subl(qword_count, 8); | |
| 836 __ jcc(Assembler::greaterEqual, L_copy_64_bytes_loop); | |
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837 |
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838 if (UseUnalignedLoadStores && (UseAVX >= 2)) { |
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839 // clean upper bits of YMM registers |
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840 __ vzeroupper(); |
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841 } |
| 405 | 842 __ addl(qword_count, 8); |
| 843 __ jccb(Assembler::zero, L_exit); | |
| 844 // | |
| 845 // length is too short, just copy qwords | |
| 846 // | |
| 847 __ BIND(L_copy_8_bytes); | |
| 848 __ movq(xmm0, Address(from, 0)); | |
| 849 __ movq(Address(from, to_from, Address::times_1), xmm0); | |
| 850 __ addl(from, 8); | |
| 851 __ decrement(qword_count); | |
| 852 __ jcc(Assembler::greater, L_copy_8_bytes); | |
| 853 __ BIND(L_exit); | |
| 854 } | |
| 855 | |
| 0 | 856 // Copy 64 bytes chunks |
| 857 // | |
| 858 // Inputs: | |
| 859 // from - source array address | |
| 860 // to_from - destination array address - from | |
| 861 // qword_count - 8-bytes element count, negative | |
| 862 // | |
| 863 void mmx_copy_forward(Register from, Register to_from, Register qword_count) { | |
| 405 | 864 assert( VM_Version::supports_mmx(), "supported cpu only" ); |
| 0 | 865 Label L_copy_64_bytes_loop, L_copy_64_bytes, L_copy_8_bytes, L_exit; |
| 866 // Copy 64-byte chunks | |
| 867 __ jmpb(L_copy_64_bytes); | |
| 1365 | 868 __ align(OptoLoopAlignment); |
| 0 | 869 __ BIND(L_copy_64_bytes_loop); |
| 870 __ movq(mmx0, Address(from, 0)); | |
| 871 __ movq(mmx1, Address(from, 8)); | |
| 872 __ movq(mmx2, Address(from, 16)); | |
| 873 __ movq(Address(from, to_from, Address::times_1, 0), mmx0); | |
| 874 __ movq(mmx3, Address(from, 24)); | |
| 875 __ movq(Address(from, to_from, Address::times_1, 8), mmx1); | |
| 876 __ movq(mmx4, Address(from, 32)); | |
| 877 __ movq(Address(from, to_from, Address::times_1, 16), mmx2); | |
| 878 __ movq(mmx5, Address(from, 40)); | |
| 879 __ movq(Address(from, to_from, Address::times_1, 24), mmx3); | |
| 880 __ movq(mmx6, Address(from, 48)); | |
| 881 __ movq(Address(from, to_from, Address::times_1, 32), mmx4); | |
| 882 __ movq(mmx7, Address(from, 56)); | |
| 883 __ movq(Address(from, to_from, Address::times_1, 40), mmx5); | |
| 884 __ movq(Address(from, to_from, Address::times_1, 48), mmx6); | |
| 885 __ movq(Address(from, to_from, Address::times_1, 56), mmx7); | |
| 304 | 886 __ addptr(from, 64); |
| 0 | 887 __ BIND(L_copy_64_bytes); |
| 888 __ subl(qword_count, 8); | |
| 889 __ jcc(Assembler::greaterEqual, L_copy_64_bytes_loop); | |
| 890 __ addl(qword_count, 8); | |
| 891 __ jccb(Assembler::zero, L_exit); | |
| 892 // | |
| 893 // length is too short, just copy qwords | |
| 894 // | |
| 895 __ BIND(L_copy_8_bytes); | |
| 896 __ movq(mmx0, Address(from, 0)); | |
| 897 __ movq(Address(from, to_from, Address::times_1), mmx0); | |
| 304 | 898 __ addptr(from, 8); |
| 0 | 899 __ decrement(qword_count); |
| 900 __ jcc(Assembler::greater, L_copy_8_bytes); | |
| 901 __ BIND(L_exit); | |
| 902 __ emms(); | |
| 903 } | |
| 904 | |
| 905 address generate_disjoint_copy(BasicType t, bool aligned, | |
| 906 Address::ScaleFactor sf, | |
| 2324 | 907 address* entry, const char *name, |
| 908 bool dest_uninitialized = false) { | |
| 0 | 909 __ align(CodeEntryAlignment); |
| 910 StubCodeMark mark(this, "StubRoutines", name); | |
| 911 address start = __ pc(); | |
| 912 | |
| 913 Label L_0_count, L_exit, L_skip_align1, L_skip_align2, L_copy_byte; | |
| 914 Label L_copy_2_bytes, L_copy_4_bytes, L_copy_64_bytes; | |
| 915 | |
| 304 | 916 int shift = Address::times_ptr - sf; |
| 0 | 917 |
| 918 const Register from = rsi; // source array address | |
| 919 const Register to = rdi; // destination array address | |
| 920 const Register count = rcx; // elements count | |
| 921 const Register to_from = to; // (to - from) | |
| 922 const Register saved_to = rdx; // saved destination array address | |
| 923 | |
| 924 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 304 | 925 __ push(rsi); |
| 926 __ push(rdi); | |
| 927 __ movptr(from , Address(rsp, 12+ 4)); | |
| 928 __ movptr(to , Address(rsp, 12+ 8)); | |
| 0 | 929 __ movl(count, Address(rsp, 12+ 12)); |
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930 |
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931 if (entry != NULL) { |
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932 *entry = __ pc(); // Entry point from conjoint arraycopy stub. |
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933 BLOCK_COMMENT("Entry:"); |
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934 } |
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935 |
| 0 | 936 if (t == T_OBJECT) { |
| 937 __ testl(count, count); | |
| 938 __ jcc(Assembler::zero, L_0_count); | |
| 2324 | 939 gen_write_ref_array_pre_barrier(to, count, dest_uninitialized); |
| 304 | 940 __ mov(saved_to, to); // save 'to' |
| 0 | 941 } |
| 942 | |
| 304 | 943 __ subptr(to, from); // to --> to_from |
| 0 | 944 __ cmpl(count, 2<<shift); // Short arrays (< 8 bytes) copy by element |
| 945 __ jcc(Assembler::below, L_copy_4_bytes); // use unsigned cmp | |
| 405 | 946 if (!UseUnalignedLoadStores && !aligned && (t == T_BYTE || t == T_SHORT)) { |
| 0 | 947 // align source address at 4 bytes address boundary |
| 948 if (t == T_BYTE) { | |
| 949 // One byte misalignment happens only for byte arrays | |
| 950 __ testl(from, 1); | |
| 951 __ jccb(Assembler::zero, L_skip_align1); | |
| 952 __ movb(rax, Address(from, 0)); | |
| 953 __ movb(Address(from, to_from, Address::times_1, 0), rax); | |
| 954 __ increment(from); | |
| 955 __ decrement(count); | |
| 956 __ BIND(L_skip_align1); | |
| 957 } | |
| 958 // Two bytes misalignment happens only for byte and short (char) arrays | |
| 959 __ testl(from, 2); | |
| 960 __ jccb(Assembler::zero, L_skip_align2); | |
| 961 __ movw(rax, Address(from, 0)); | |
| 962 __ movw(Address(from, to_from, Address::times_1, 0), rax); | |
| 304 | 963 __ addptr(from, 2); |
| 0 | 964 __ subl(count, 1<<(shift-1)); |
| 965 __ BIND(L_skip_align2); | |
| 966 } | |
| 967 if (!VM_Version::supports_mmx()) { | |
| 304 | 968 __ mov(rax, count); // save 'count' |
| 969 __ shrl(count, shift); // bytes count | |
| 970 __ addptr(to_from, from);// restore 'to' | |
| 971 __ rep_mov(); | |
| 972 __ subptr(to_from, from);// restore 'to_from' | |
| 973 __ mov(count, rax); // restore 'count' | |
| 0 | 974 __ jmpb(L_copy_2_bytes); // all dwords were copied |
| 975 } else { | |
| 405 | 976 if (!UseUnalignedLoadStores) { |
| 977 // align to 8 bytes, we know we are 4 byte aligned to start | |
| 978 __ testptr(from, 4); | |
| 979 __ jccb(Assembler::zero, L_copy_64_bytes); | |
| 980 __ movl(rax, Address(from, 0)); | |
| 981 __ movl(Address(from, to_from, Address::times_1, 0), rax); | |
| 982 __ addptr(from, 4); | |
| 983 __ subl(count, 1<<shift); | |
| 984 } | |
| 0 | 985 __ BIND(L_copy_64_bytes); |
| 304 | 986 __ mov(rax, count); |
| 0 | 987 __ shrl(rax, shift+1); // 8 bytes chunk count |
| 988 // | |
| 989 // Copy 8-byte chunks through MMX registers, 8 per iteration of the loop | |
| 990 // | |
| 405 | 991 if (UseXMMForArrayCopy) { |
| 992 xmm_copy_forward(from, to_from, rax); | |
| 993 } else { | |
| 994 mmx_copy_forward(from, to_from, rax); | |
| 995 } | |
| 0 | 996 } |
| 997 // copy tailing dword | |
| 998 __ BIND(L_copy_4_bytes); | |
| 999 __ testl(count, 1<<shift); | |
| 1000 __ jccb(Assembler::zero, L_copy_2_bytes); | |
| 1001 __ movl(rax, Address(from, 0)); | |
| 1002 __ movl(Address(from, to_from, Address::times_1, 0), rax); | |
| 1003 if (t == T_BYTE || t == T_SHORT) { | |
| 304 | 1004 __ addptr(from, 4); |
| 0 | 1005 __ BIND(L_copy_2_bytes); |
| 1006 // copy tailing word | |
| 1007 __ testl(count, 1<<(shift-1)); | |
| 1008 __ jccb(Assembler::zero, L_copy_byte); | |
| 1009 __ movw(rax, Address(from, 0)); | |
| 1010 __ movw(Address(from, to_from, Address::times_1, 0), rax); | |
| 1011 if (t == T_BYTE) { | |
| 304 | 1012 __ addptr(from, 2); |
| 0 | 1013 __ BIND(L_copy_byte); |
| 1014 // copy tailing byte | |
| 1015 __ testl(count, 1); | |
| 1016 __ jccb(Assembler::zero, L_exit); | |
| 1017 __ movb(rax, Address(from, 0)); | |
| 1018 __ movb(Address(from, to_from, Address::times_1, 0), rax); | |
| 1019 __ BIND(L_exit); | |
| 1020 } else { | |
| 1021 __ BIND(L_copy_byte); | |
| 1022 } | |
| 1023 } else { | |
| 1024 __ BIND(L_copy_2_bytes); | |
| 1025 } | |
| 1026 | |
| 1027 if (t == T_OBJECT) { | |
| 1028 __ movl(count, Address(rsp, 12+12)); // reread 'count' | |
| 304 | 1029 __ mov(to, saved_to); // restore 'to' |
| 0 | 1030 gen_write_ref_array_post_barrier(to, count); |
| 1031 __ BIND(L_0_count); | |
| 1032 } | |
| 1033 inc_copy_counter_np(t); | |
| 304 | 1034 __ pop(rdi); |
| 1035 __ pop(rsi); | |
| 0 | 1036 __ leave(); // required for proper stackwalking of RuntimeStub frame |
| 304 | 1037 __ xorptr(rax, rax); // return 0 |
| 0 | 1038 __ ret(0); |
| 1039 return start; | |
| 1040 } | |
| 1041 | |
| 1042 | |
| 1763 | 1043 address generate_fill(BasicType t, bool aligned, const char *name) { |
| 1044 __ align(CodeEntryAlignment); | |
| 1045 StubCodeMark mark(this, "StubRoutines", name); | |
| 1046 address start = __ pc(); | |
| 1047 | |
| 1048 BLOCK_COMMENT("Entry:"); | |
| 1049 | |
| 1050 const Register to = rdi; // source array address | |
| 1051 const Register value = rdx; // value | |
| 1052 const Register count = rsi; // elements count | |
| 1053 | |
| 1054 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 1055 __ push(rsi); | |
| 1056 __ push(rdi); | |
| 1057 __ movptr(to , Address(rsp, 12+ 4)); | |
| 1058 __ movl(value, Address(rsp, 12+ 8)); | |
| 1059 __ movl(count, Address(rsp, 12+ 12)); | |
| 1060 | |
| 1061 __ generate_fill(t, aligned, to, value, count, rax, xmm0); | |
| 1062 | |
| 1063 __ pop(rdi); | |
| 1064 __ pop(rsi); | |
| 1065 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
| 1066 __ ret(0); | |
| 1067 return start; | |
| 1068 } | |
| 1069 | |
| 0 | 1070 address generate_conjoint_copy(BasicType t, bool aligned, |
| 1071 Address::ScaleFactor sf, | |
| 1072 address nooverlap_target, | |
| 2324 | 1073 address* entry, const char *name, |
| 1074 bool dest_uninitialized = false) { | |
| 0 | 1075 __ align(CodeEntryAlignment); |
| 1076 StubCodeMark mark(this, "StubRoutines", name); | |
| 1077 address start = __ pc(); | |
| 1078 | |
| 1079 Label L_0_count, L_exit, L_skip_align1, L_skip_align2, L_copy_byte; | |
| 1080 Label L_copy_2_bytes, L_copy_4_bytes, L_copy_8_bytes, L_copy_8_bytes_loop; | |
| 1081 | |
| 304 | 1082 int shift = Address::times_ptr - sf; |
| 0 | 1083 |
| 1084 const Register src = rax; // source array address | |
| 1085 const Register dst = rdx; // destination array address | |
| 1086 const Register from = rsi; // source array address | |
| 1087 const Register to = rdi; // destination array address | |
| 1088 const Register count = rcx; // elements count | |
| 1089 const Register end = rax; // array end address | |
| 1090 | |
| 1091 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 304 | 1092 __ push(rsi); |
| 1093 __ push(rdi); | |
| 1094 __ movptr(src , Address(rsp, 12+ 4)); // from | |
| 1095 __ movptr(dst , Address(rsp, 12+ 8)); // to | |
| 1096 __ movl2ptr(count, Address(rsp, 12+12)); // count | |
| 0 | 1097 |
| 1098 if (entry != NULL) { | |
| 1099 *entry = __ pc(); // Entry point from generic arraycopy stub. | |
| 1100 BLOCK_COMMENT("Entry:"); | |
| 1101 } | |
| 1102 | |
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1103 // nooverlap_target expects arguments in rsi and rdi. |
| 304 | 1104 __ mov(from, src); |
| 1105 __ mov(to , dst); | |
| 0 | 1106 |
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1107 // arrays overlap test: dispatch to disjoint stub if necessary. |
| 0 | 1108 RuntimeAddress nooverlap(nooverlap_target); |
| 304 | 1109 __ cmpptr(dst, src); |
| 1110 __ lea(end, Address(src, count, sf, 0)); // src + count * elem_size | |
| 0 | 1111 __ jump_cc(Assembler::belowEqual, nooverlap); |
| 304 | 1112 __ cmpptr(dst, end); |
| 0 | 1113 __ jump_cc(Assembler::aboveEqual, nooverlap); |
| 1114 | |
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1115 if (t == T_OBJECT) { |
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1116 __ testl(count, count); |
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1117 __ jcc(Assembler::zero, L_0_count); |
| 2324 | 1118 gen_write_ref_array_pre_barrier(dst, count, dest_uninitialized); |
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1119 } |
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1120 |
| 0 | 1121 // copy from high to low |
| 1122 __ cmpl(count, 2<<shift); // Short arrays (< 8 bytes) copy by element | |
| 1123 __ jcc(Assembler::below, L_copy_4_bytes); // use unsigned cmp | |
| 1124 if (t == T_BYTE || t == T_SHORT) { | |
| 1125 // Align the end of destination array at 4 bytes address boundary | |
| 304 | 1126 __ lea(end, Address(dst, count, sf, 0)); |
| 0 | 1127 if (t == T_BYTE) { |
| 1128 // One byte misalignment happens only for byte arrays | |
| 1129 __ testl(end, 1); | |
| 1130 __ jccb(Assembler::zero, L_skip_align1); | |
| 1131 __ decrement(count); | |
| 1132 __ movb(rdx, Address(from, count, sf, 0)); | |
| 1133 __ movb(Address(to, count, sf, 0), rdx); | |
| 1134 __ BIND(L_skip_align1); | |
| 1135 } | |
| 1136 // Two bytes misalignment happens only for byte and short (char) arrays | |
| 1137 __ testl(end, 2); | |
| 1138 __ jccb(Assembler::zero, L_skip_align2); | |
| 304 | 1139 __ subptr(count, 1<<(shift-1)); |
| 0 | 1140 __ movw(rdx, Address(from, count, sf, 0)); |
| 1141 __ movw(Address(to, count, sf, 0), rdx); | |
| 1142 __ BIND(L_skip_align2); | |
| 1143 __ cmpl(count, 2<<shift); // Short arrays (< 8 bytes) copy by element | |
| 1144 __ jcc(Assembler::below, L_copy_4_bytes); | |
| 1145 } | |
| 1146 | |
| 1147 if (!VM_Version::supports_mmx()) { | |
| 1148 __ std(); | |
| 304 | 1149 __ mov(rax, count); // Save 'count' |
| 1150 __ mov(rdx, to); // Save 'to' | |
| 1151 __ lea(rsi, Address(from, count, sf, -4)); | |
| 1152 __ lea(rdi, Address(to , count, sf, -4)); | |
| 1153 __ shrptr(count, shift); // bytes count | |
| 1154 __ rep_mov(); | |
| 0 | 1155 __ cld(); |
| 304 | 1156 __ mov(count, rax); // restore 'count' |
| 0 | 1157 __ andl(count, (1<<shift)-1); // mask the number of rest elements |
| 304 | 1158 __ movptr(from, Address(rsp, 12+4)); // reread 'from' |
| 1159 __ mov(to, rdx); // restore 'to' | |
| 0 | 1160 __ jmpb(L_copy_2_bytes); // all dword were copied |
| 1161 } else { | |
| 1162 // Align to 8 bytes the end of array. It is aligned to 4 bytes already. | |
| 304 | 1163 __ testptr(end, 4); |
| 0 | 1164 __ jccb(Assembler::zero, L_copy_8_bytes); |
| 1165 __ subl(count, 1<<shift); | |
| 1166 __ movl(rdx, Address(from, count, sf, 0)); | |
| 1167 __ movl(Address(to, count, sf, 0), rdx); | |
| 1168 __ jmpb(L_copy_8_bytes); | |
| 1169 | |
| 1365 | 1170 __ align(OptoLoopAlignment); |
| 0 | 1171 // Move 8 bytes |
| 1172 __ BIND(L_copy_8_bytes_loop); | |
| 405 | 1173 if (UseXMMForArrayCopy) { |
| 1174 __ movq(xmm0, Address(from, count, sf, 0)); | |
| 1175 __ movq(Address(to, count, sf, 0), xmm0); | |
| 1176 } else { | |
| 1177 __ movq(mmx0, Address(from, count, sf, 0)); | |
| 1178 __ movq(Address(to, count, sf, 0), mmx0); | |
| 1179 } | |
| 0 | 1180 __ BIND(L_copy_8_bytes); |
| 1181 __ subl(count, 2<<shift); | |
| 1182 __ jcc(Assembler::greaterEqual, L_copy_8_bytes_loop); | |
| 1183 __ addl(count, 2<<shift); | |
| 405 | 1184 if (!UseXMMForArrayCopy) { |
| 1185 __ emms(); | |
| 1186 } | |
| 0 | 1187 } |
| 1188 __ BIND(L_copy_4_bytes); | |
| 1189 // copy prefix qword | |
| 1190 __ testl(count, 1<<shift); | |
| 1191 __ jccb(Assembler::zero, L_copy_2_bytes); | |
| 1192 __ movl(rdx, Address(from, count, sf, -4)); | |
| 1193 __ movl(Address(to, count, sf, -4), rdx); | |
| 1194 | |
| 1195 if (t == T_BYTE || t == T_SHORT) { | |
| 1196 __ subl(count, (1<<shift)); | |
| 1197 __ BIND(L_copy_2_bytes); | |
| 1198 // copy prefix dword | |
| 1199 __ testl(count, 1<<(shift-1)); | |
| 1200 __ jccb(Assembler::zero, L_copy_byte); | |
| 1201 __ movw(rdx, Address(from, count, sf, -2)); | |
| 1202 __ movw(Address(to, count, sf, -2), rdx); | |
| 1203 if (t == T_BYTE) { | |
| 1204 __ subl(count, 1<<(shift-1)); | |
| 1205 __ BIND(L_copy_byte); | |
| 1206 // copy prefix byte | |
| 1207 __ testl(count, 1); | |
| 1208 __ jccb(Assembler::zero, L_exit); | |
| 1209 __ movb(rdx, Address(from, 0)); | |
| 1210 __ movb(Address(to, 0), rdx); | |
| 1211 __ BIND(L_exit); | |
| 1212 } else { | |
| 1213 __ BIND(L_copy_byte); | |
| 1214 } | |
| 1215 } else { | |
| 1216 __ BIND(L_copy_2_bytes); | |
| 1217 } | |
| 1218 if (t == T_OBJECT) { | |
| 304 | 1219 __ movl2ptr(count, Address(rsp, 12+12)); // reread count |
| 0 | 1220 gen_write_ref_array_post_barrier(to, count); |
| 1221 __ BIND(L_0_count); | |
| 1222 } | |
| 1223 inc_copy_counter_np(t); | |
| 304 | 1224 __ pop(rdi); |
| 1225 __ pop(rsi); | |
| 0 | 1226 __ leave(); // required for proper stackwalking of RuntimeStub frame |
| 304 | 1227 __ xorptr(rax, rax); // return 0 |
| 0 | 1228 __ ret(0); |
| 1229 return start; | |
| 1230 } | |
| 1231 | |
| 1232 | |
| 1233 address generate_disjoint_long_copy(address* entry, const char *name) { | |
| 1234 __ align(CodeEntryAlignment); | |
| 1235 StubCodeMark mark(this, "StubRoutines", name); | |
| 1236 address start = __ pc(); | |
| 1237 | |
| 1238 Label L_copy_8_bytes, L_copy_8_bytes_loop; | |
| 1239 const Register from = rax; // source array address | |
| 1240 const Register to = rdx; // destination array address | |
| 1241 const Register count = rcx; // elements count | |
| 1242 const Register to_from = rdx; // (to - from) | |
| 1243 | |
| 1244 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 304 | 1245 __ movptr(from , Address(rsp, 8+0)); // from |
| 1246 __ movptr(to , Address(rsp, 8+4)); // to | |
| 1247 __ movl2ptr(count, Address(rsp, 8+8)); // count | |
| 0 | 1248 |
| 1249 *entry = __ pc(); // Entry point from conjoint arraycopy stub. | |
| 1250 BLOCK_COMMENT("Entry:"); | |
| 1251 | |
| 304 | 1252 __ subptr(to, from); // to --> to_from |
| 0 | 1253 if (VM_Version::supports_mmx()) { |
| 405 | 1254 if (UseXMMForArrayCopy) { |
| 1255 xmm_copy_forward(from, to_from, count); | |
| 1256 } else { | |
| 1257 mmx_copy_forward(from, to_from, count); | |
| 1258 } | |
| 0 | 1259 } else { |
| 1260 __ jmpb(L_copy_8_bytes); | |
| 1365 | 1261 __ align(OptoLoopAlignment); |
| 0 | 1262 __ BIND(L_copy_8_bytes_loop); |
| 1263 __ fild_d(Address(from, 0)); | |
| 1264 __ fistp_d(Address(from, to_from, Address::times_1)); | |
| 304 | 1265 __ addptr(from, 8); |
| 0 | 1266 __ BIND(L_copy_8_bytes); |
| 1267 __ decrement(count); | |
| 1268 __ jcc(Assembler::greaterEqual, L_copy_8_bytes_loop); | |
| 1269 } | |
| 1270 inc_copy_counter_np(T_LONG); | |
| 1271 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
| 304 | 1272 __ xorptr(rax, rax); // return 0 |
| 0 | 1273 __ ret(0); |
| 1274 return start; | |
| 1275 } | |
| 1276 | |
| 1277 address generate_conjoint_long_copy(address nooverlap_target, | |
| 1278 address* entry, const char *name) { | |
| 1279 __ align(CodeEntryAlignment); | |
| 1280 StubCodeMark mark(this, "StubRoutines", name); | |
| 1281 address start = __ pc(); | |
| 1282 | |
| 1283 Label L_copy_8_bytes, L_copy_8_bytes_loop; | |
| 1284 const Register from = rax; // source array address | |
| 1285 const Register to = rdx; // destination array address | |
| 1286 const Register count = rcx; // elements count | |
| 1287 const Register end_from = rax; // source array end address | |
| 1288 | |
| 1289 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 304 | 1290 __ movptr(from , Address(rsp, 8+0)); // from |
| 1291 __ movptr(to , Address(rsp, 8+4)); // to | |
| 1292 __ movl2ptr(count, Address(rsp, 8+8)); // count | |
| 0 | 1293 |
| 1294 *entry = __ pc(); // Entry point from generic arraycopy stub. | |
| 1295 BLOCK_COMMENT("Entry:"); | |
| 1296 | |
| 1297 // arrays overlap test | |
| 304 | 1298 __ cmpptr(to, from); |
| 0 | 1299 RuntimeAddress nooverlap(nooverlap_target); |
| 1300 __ jump_cc(Assembler::belowEqual, nooverlap); | |
| 304 | 1301 __ lea(end_from, Address(from, count, Address::times_8, 0)); |
| 1302 __ cmpptr(to, end_from); | |
| 1303 __ movptr(from, Address(rsp, 8)); // from | |
| 0 | 1304 __ jump_cc(Assembler::aboveEqual, nooverlap); |
| 1305 | |
| 1306 __ jmpb(L_copy_8_bytes); | |
| 1307 | |
| 1365 | 1308 __ align(OptoLoopAlignment); |
| 0 | 1309 __ BIND(L_copy_8_bytes_loop); |
| 1310 if (VM_Version::supports_mmx()) { | |
| 405 | 1311 if (UseXMMForArrayCopy) { |
| 1312 __ movq(xmm0, Address(from, count, Address::times_8)); | |
| 1313 __ movq(Address(to, count, Address::times_8), xmm0); | |
| 1314 } else { | |
| 1315 __ movq(mmx0, Address(from, count, Address::times_8)); | |
| 1316 __ movq(Address(to, count, Address::times_8), mmx0); | |
| 1317 } | |
| 0 | 1318 } else { |
| 1319 __ fild_d(Address(from, count, Address::times_8)); | |
| 1320 __ fistp_d(Address(to, count, Address::times_8)); | |
| 1321 } | |
| 1322 __ BIND(L_copy_8_bytes); | |
| 1323 __ decrement(count); | |
| 1324 __ jcc(Assembler::greaterEqual, L_copy_8_bytes_loop); | |
| 1325 | |
| 405 | 1326 if (VM_Version::supports_mmx() && !UseXMMForArrayCopy) { |
| 0 | 1327 __ emms(); |
| 1328 } | |
| 1329 inc_copy_counter_np(T_LONG); | |
| 1330 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
| 304 | 1331 __ xorptr(rax, rax); // return 0 |
| 0 | 1332 __ ret(0); |
| 1333 return start; | |
| 1334 } | |
| 1335 | |
| 1336 | |
| 1337 // Helper for generating a dynamic type check. | |
| 1338 // The sub_klass must be one of {rbx, rdx, rsi}. | |
| 1339 // The temp is killed. | |
| 1340 void generate_type_check(Register sub_klass, | |
| 1341 Address& super_check_offset_addr, | |
| 1342 Address& super_klass_addr, | |
| 1343 Register temp, | |
|
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1344 Label* L_success, Label* L_failure) { |
| 0 | 1345 BLOCK_COMMENT("type_check:"); |
| 1346 | |
| 1347 Label L_fallthrough; | |
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1348 #define LOCAL_JCC(assembler_con, label_ptr) \ |
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1349 if (label_ptr != NULL) __ jcc(assembler_con, *(label_ptr)); \ |
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1350 else __ jcc(assembler_con, L_fallthrough) /*omit semi*/ |
| 0 | 1351 |
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1352 // The following is a strange variation of the fast path which requires |
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1353 // one less register, because needed values are on the argument stack. |
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1354 // __ check_klass_subtype_fast_path(sub_klass, *super_klass*, temp, |
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1355 // L_success, L_failure, NULL); |
| 0 | 1356 assert_different_registers(sub_klass, temp); |
| 1357 | |
|
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1358 int sc_offset = in_bytes(Klass::secondary_super_cache_offset()); |
| 0 | 1359 |
| 1360 // if the pointers are equal, we are done (e.g., String[] elements) | |
| 304 | 1361 __ cmpptr(sub_klass, super_klass_addr); |
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1362 LOCAL_JCC(Assembler::equal, L_success); |
| 0 | 1363 |
| 1364 // check the supertype display: | |
| 304 | 1365 __ movl2ptr(temp, super_check_offset_addr); |
| 0 | 1366 Address super_check_addr(sub_klass, temp, Address::times_1, 0); |
| 304 | 1367 __ movptr(temp, super_check_addr); // load displayed supertype |
| 1368 __ cmpptr(temp, super_klass_addr); // test the super type | |
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1369 LOCAL_JCC(Assembler::equal, L_success); |
| 0 | 1370 |
| 1371 // if it was a primary super, we can just fail immediately | |
| 1372 __ cmpl(super_check_offset_addr, sc_offset); | |
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1373 LOCAL_JCC(Assembler::notEqual, L_failure); |
| 0 | 1374 |
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1375 // The repne_scan instruction uses fixed registers, which will get spilled. |
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1376 // We happen to know this works best when super_klass is in rax. |
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1377 Register super_klass = temp; |
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1378 __ movptr(super_klass, super_klass_addr); |
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1379 __ check_klass_subtype_slow_path(sub_klass, super_klass, noreg, noreg, |
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1380 L_success, L_failure); |
| 0 | 1381 |
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1382 __ bind(L_fallthrough); |
| 0 | 1383 |
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1384 if (L_success == NULL) { BLOCK_COMMENT("L_success:"); } |
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1385 if (L_failure == NULL) { BLOCK_COMMENT("L_failure:"); } |
| 0 | 1386 |
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1387 #undef LOCAL_JCC |
| 0 | 1388 } |
| 1389 | |
| 1390 // | |
| 1391 // Generate checkcasting array copy stub | |
| 1392 // | |
| 1393 // Input: | |
| 1394 // 4(rsp) - source array address | |
| 1395 // 8(rsp) - destination array address | |
| 1396 // 12(rsp) - element count, can be zero | |
| 1397 // 16(rsp) - size_t ckoff (super_check_offset) | |
| 1398 // 20(rsp) - oop ckval (super_klass) | |
| 1399 // | |
| 1400 // Output: | |
| 1401 // rax, == 0 - success | |
| 1402 // rax, == -1^K - failure, where K is partial transfer count | |
| 1403 // | |
| 2324 | 1404 address generate_checkcast_copy(const char *name, address* entry, bool dest_uninitialized = false) { |
| 0 | 1405 __ align(CodeEntryAlignment); |
| 1406 StubCodeMark mark(this, "StubRoutines", name); | |
| 1407 address start = __ pc(); | |
| 1408 | |
| 1409 Label L_load_element, L_store_element, L_do_card_marks, L_done; | |
| 1410 | |
| 1411 // register use: | |
| 1412 // rax, rdx, rcx -- loop control (end_from, end_to, count) | |
| 1413 // rdi, rsi -- element access (oop, klass) | |
| 1414 // rbx, -- temp | |
| 1415 const Register from = rax; // source array address | |
| 1416 const Register to = rdx; // destination array address | |
| 1417 const Register length = rcx; // elements count | |
| 1418 const Register elem = rdi; // each oop copied | |
| 1419 const Register elem_klass = rsi; // each elem._klass (sub_klass) | |
| 1420 const Register temp = rbx; // lone remaining temp | |
| 1421 | |
| 1422 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 1423 | |
| 304 | 1424 __ push(rsi); |
| 1425 __ push(rdi); | |
| 1426 __ push(rbx); | |
| 0 | 1427 |
| 1428 Address from_arg(rsp, 16+ 4); // from | |
| 1429 Address to_arg(rsp, 16+ 8); // to | |
| 1430 Address length_arg(rsp, 16+12); // elements count | |
| 1431 Address ckoff_arg(rsp, 16+16); // super_check_offset | |
| 1432 Address ckval_arg(rsp, 16+20); // super_klass | |
| 1433 | |
| 1434 // Load up: | |
| 304 | 1435 __ movptr(from, from_arg); |
| 1436 __ movptr(to, to_arg); | |
| 1437 __ movl2ptr(length, length_arg); | |
| 0 | 1438 |
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1439 if (entry != NULL) { |
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1440 *entry = __ pc(); // Entry point from generic arraycopy stub. |
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1441 BLOCK_COMMENT("Entry:"); |
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1442 } |
| 0 | 1443 |
| 1444 //--------------------------------------------------------------- | |
| 1445 // Assembler stub will be used for this call to arraycopy | |
| 1446 // if the two arrays are subtypes of Object[] but the | |
| 1447 // destination array type is not equal to or a supertype | |
| 1448 // of the source type. Each element must be separately | |
| 1449 // checked. | |
| 1450 | |
| 1451 // Loop-invariant addresses. They are exclusive end pointers. | |
| 304 | 1452 Address end_from_addr(from, length, Address::times_ptr, 0); |
| 1453 Address end_to_addr(to, length, Address::times_ptr, 0); | |
| 0 | 1454 |
| 1455 Register end_from = from; // re-use | |
| 1456 Register end_to = to; // re-use | |
| 1457 Register count = length; // re-use | |
| 1458 | |
| 1459 // Loop-variant addresses. They assume post-incremented count < 0. | |
| 304 | 1460 Address from_element_addr(end_from, count, Address::times_ptr, 0); |
| 1461 Address to_element_addr(end_to, count, Address::times_ptr, 0); | |
| 0 | 1462 Address elem_klass_addr(elem, oopDesc::klass_offset_in_bytes()); |
| 1463 | |
| 1464 // Copy from low to high addresses, indexed from the end of each array. | |
| 2324 | 1465 gen_write_ref_array_pre_barrier(to, count, dest_uninitialized); |
| 304 | 1466 __ lea(end_from, end_from_addr); |
| 1467 __ lea(end_to, end_to_addr); | |
| 0 | 1468 assert(length == count, ""); // else fix next line: |
| 304 | 1469 __ negptr(count); // negate and test the length |
| 0 | 1470 __ jccb(Assembler::notZero, L_load_element); |
| 1471 | |
| 1472 // Empty array: Nothing to do. | |
| 304 | 1473 __ xorptr(rax, rax); // return 0 on (trivial) success |
| 0 | 1474 __ jmp(L_done); |
| 1475 | |
| 1476 // ======== begin loop ======== | |
| 1477 // (Loop is rotated; its entry is L_load_element.) | |
| 1478 // Loop control: | |
| 1479 // for (count = -count; count != 0; count++) | |
| 1480 // Base pointers src, dst are biased by 8*count,to last element. | |
| 1365 | 1481 __ align(OptoLoopAlignment); |
| 0 | 1482 |
| 1483 __ BIND(L_store_element); | |
| 304 | 1484 __ movptr(to_element_addr, elem); // store the oop |
| 0 | 1485 __ increment(count); // increment the count toward zero |
| 1486 __ jccb(Assembler::zero, L_do_card_marks); | |
| 1487 | |
| 1488 // ======== loop entry is here ======== | |
| 1489 __ BIND(L_load_element); | |
| 304 | 1490 __ movptr(elem, from_element_addr); // load the oop |
| 1491 __ testptr(elem, elem); | |
| 0 | 1492 __ jccb(Assembler::zero, L_store_element); |
| 1493 | |
| 1494 // (Could do a trick here: Remember last successful non-null | |
| 1495 // element stored and make a quick oop equality check on it.) | |
| 1496 | |
| 304 | 1497 __ movptr(elem_klass, elem_klass_addr); // query the object klass |
| 0 | 1498 generate_type_check(elem_klass, ckoff_arg, ckval_arg, temp, |
| 1499 &L_store_element, NULL); | |
|
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1500 // (On fall-through, we have failed the element type check.) |
| 0 | 1501 // ======== end loop ======== |
| 1502 | |
| 1503 // It was a real error; we must depend on the caller to finish the job. | |
|
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1504 // Register "count" = -1 * number of *remaining* oops, length_arg = *total* oops. |
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1505 // Emit GC store barriers for the oops we have copied (length_arg + count), |
| 0 | 1506 // and report their number to the caller. |
|
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1507 assert_different_registers(to, count, rax); |
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1508 Label L_post_barrier; |
| 0 | 1509 __ addl(count, length_arg); // transfers = (length - remaining) |
| 304 | 1510 __ movl2ptr(rax, count); // save the value |
|
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1511 __ notptr(rax); // report (-1^K) to caller (does not affect flags) |
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1512 __ jccb(Assembler::notZero, L_post_barrier); |
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1513 __ jmp(L_done); // K == 0, nothing was copied, skip post barrier |
| 0 | 1514 |
| 1515 // Come here on success only. | |
| 1516 __ BIND(L_do_card_marks); | |
|
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1517 __ xorptr(rax, rax); // return 0 on success |
| 304 | 1518 __ movl2ptr(count, length_arg); |
|
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1519 |
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1520 __ BIND(L_post_barrier); |
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1521 __ movptr(to, to_arg); // reload |
| 0 | 1522 gen_write_ref_array_post_barrier(to, count); |
| 1523 | |
| 1524 // Common exit point (success or failure). | |
| 1525 __ BIND(L_done); | |
| 304 | 1526 __ pop(rbx); |
| 1527 __ pop(rdi); | |
| 1528 __ pop(rsi); | |
| 0 | 1529 inc_counter_np(SharedRuntime::_checkcast_array_copy_ctr); |
| 1530 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
| 1531 __ ret(0); | |
| 1532 | |
| 1533 return start; | |
| 1534 } | |
| 1535 | |
| 1536 // | |
| 1537 // Generate 'unsafe' array copy stub | |
| 1538 // Though just as safe as the other stubs, it takes an unscaled | |
| 1539 // size_t argument instead of an element count. | |
| 1540 // | |
| 1541 // Input: | |
| 1542 // 4(rsp) - source array address | |
| 1543 // 8(rsp) - destination array address | |
| 1544 // 12(rsp) - byte count, can be zero | |
| 1545 // | |
| 1546 // Output: | |
| 1547 // rax, == 0 - success | |
| 1548 // rax, == -1 - need to call System.arraycopy | |
| 1549 // | |
| 1550 // Examines the alignment of the operands and dispatches | |
| 1551 // to a long, int, short, or byte copy loop. | |
| 1552 // | |
| 1553 address generate_unsafe_copy(const char *name, | |
| 1554 address byte_copy_entry, | |
| 1555 address short_copy_entry, | |
| 1556 address int_copy_entry, | |
| 1557 address long_copy_entry) { | |
| 1558 | |
| 1559 Label L_long_aligned, L_int_aligned, L_short_aligned; | |
| 1560 | |
| 1561 __ align(CodeEntryAlignment); | |
| 1562 StubCodeMark mark(this, "StubRoutines", name); | |
| 1563 address start = __ pc(); | |
| 1564 | |
| 1565 const Register from = rax; // source array address | |
| 1566 const Register to = rdx; // destination array address | |
| 1567 const Register count = rcx; // elements count | |
| 1568 | |
| 1569 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 304 | 1570 __ push(rsi); |
| 1571 __ push(rdi); | |
| 0 | 1572 Address from_arg(rsp, 12+ 4); // from |
| 1573 Address to_arg(rsp, 12+ 8); // to | |
| 1574 Address count_arg(rsp, 12+12); // byte count | |
| 1575 | |
| 1576 // Load up: | |
| 304 | 1577 __ movptr(from , from_arg); |
| 1578 __ movptr(to , to_arg); | |
| 1579 __ movl2ptr(count, count_arg); | |
| 0 | 1580 |
| 1581 // bump this on entry, not on exit: | |
| 1582 inc_counter_np(SharedRuntime::_unsafe_array_copy_ctr); | |
| 1583 | |
| 1584 const Register bits = rsi; | |
| 304 | 1585 __ mov(bits, from); |
| 1586 __ orptr(bits, to); | |
| 1587 __ orptr(bits, count); | |
| 0 | 1588 |
| 1589 __ testl(bits, BytesPerLong-1); | |
| 1590 __ jccb(Assembler::zero, L_long_aligned); | |
| 1591 | |
| 1592 __ testl(bits, BytesPerInt-1); | |
| 1593 __ jccb(Assembler::zero, L_int_aligned); | |
| 1594 | |
| 1595 __ testl(bits, BytesPerShort-1); | |
| 1596 __ jump_cc(Assembler::notZero, RuntimeAddress(byte_copy_entry)); | |
| 1597 | |
| 1598 __ BIND(L_short_aligned); | |
| 304 | 1599 __ shrptr(count, LogBytesPerShort); // size => short_count |
| 0 | 1600 __ movl(count_arg, count); // update 'count' |
| 1601 __ jump(RuntimeAddress(short_copy_entry)); | |
| 1602 | |
| 1603 __ BIND(L_int_aligned); | |
| 304 | 1604 __ shrptr(count, LogBytesPerInt); // size => int_count |
| 0 | 1605 __ movl(count_arg, count); // update 'count' |
| 1606 __ jump(RuntimeAddress(int_copy_entry)); | |
| 1607 | |
| 1608 __ BIND(L_long_aligned); | |
| 304 | 1609 __ shrptr(count, LogBytesPerLong); // size => qword_count |
| 0 | 1610 __ movl(count_arg, count); // update 'count' |
| 304 | 1611 __ pop(rdi); // Do pops here since jlong_arraycopy stub does not do it. |
| 1612 __ pop(rsi); | |
| 0 | 1613 __ jump(RuntimeAddress(long_copy_entry)); |
| 1614 | |
| 1615 return start; | |
| 1616 } | |
| 1617 | |
| 1618 | |
| 1619 // Perform range checks on the proposed arraycopy. | |
| 1620 // Smashes src_pos and dst_pos. (Uses them up for temps.) | |
| 1621 void arraycopy_range_checks(Register src, | |
| 1622 Register src_pos, | |
| 1623 Register dst, | |
| 1624 Register dst_pos, | |
| 1625 Address& length, | |
| 1626 Label& L_failed) { | |
| 1627 BLOCK_COMMENT("arraycopy_range_checks:"); | |
| 1628 const Register src_end = src_pos; // source array end position | |
| 1629 const Register dst_end = dst_pos; // destination array end position | |
| 1630 __ addl(src_end, length); // src_pos + length | |
| 1631 __ addl(dst_end, length); // dst_pos + length | |
| 1632 | |
| 1633 // if (src_pos + length > arrayOop(src)->length() ) FAIL; | |
| 1634 __ cmpl(src_end, Address(src, arrayOopDesc::length_offset_in_bytes())); | |
| 1635 __ jcc(Assembler::above, L_failed); | |
| 1636 | |
| 1637 // if (dst_pos + length > arrayOop(dst)->length() ) FAIL; | |
| 1638 __ cmpl(dst_end, Address(dst, arrayOopDesc::length_offset_in_bytes())); | |
| 1639 __ jcc(Assembler::above, L_failed); | |
| 1640 | |
| 1641 BLOCK_COMMENT("arraycopy_range_checks done"); | |
| 1642 } | |
| 1643 | |
| 1644 | |
| 1645 // | |
| 1646 // Generate generic array copy stubs | |
| 1647 // | |
| 1648 // Input: | |
| 1649 // 4(rsp) - src oop | |
| 1650 // 8(rsp) - src_pos | |
| 1651 // 12(rsp) - dst oop | |
| 1652 // 16(rsp) - dst_pos | |
| 1653 // 20(rsp) - element count | |
| 1654 // | |
| 1655 // Output: | |
| 1656 // rax, == 0 - success | |
| 1657 // rax, == -1^K - failure, where K is partial transfer count | |
| 1658 // | |
| 1659 address generate_generic_copy(const char *name, | |
| 1660 address entry_jbyte_arraycopy, | |
| 1661 address entry_jshort_arraycopy, | |
| 1662 address entry_jint_arraycopy, | |
| 1663 address entry_oop_arraycopy, | |
| 1664 address entry_jlong_arraycopy, | |
| 1665 address entry_checkcast_arraycopy) { | |
| 1666 Label L_failed, L_failed_0, L_objArray; | |
| 1667 | |
| 1668 { int modulus = CodeEntryAlignment; | |
| 1669 int target = modulus - 5; // 5 = sizeof jmp(L_failed) | |
| 1670 int advance = target - (__ offset() % modulus); | |
| 1671 if (advance < 0) advance += modulus; | |
| 1672 if (advance > 0) __ nop(advance); | |
| 1673 } | |
| 1674 StubCodeMark mark(this, "StubRoutines", name); | |
| 1675 | |
| 1676 // Short-hop target to L_failed. Makes for denser prologue code. | |
| 1677 __ BIND(L_failed_0); | |
| 1678 __ jmp(L_failed); | |
| 1679 assert(__ offset() % CodeEntryAlignment == 0, "no further alignment needed"); | |
| 1680 | |
| 1681 __ align(CodeEntryAlignment); | |
| 1682 address start = __ pc(); | |
| 1683 | |
| 1684 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 304 | 1685 __ push(rsi); |
| 1686 __ push(rdi); | |
| 0 | 1687 |
| 1688 // bump this on entry, not on exit: | |
| 1689 inc_counter_np(SharedRuntime::_generic_array_copy_ctr); | |
| 1690 | |
| 1691 // Input values | |
| 1692 Address SRC (rsp, 12+ 4); | |
| 1693 Address SRC_POS (rsp, 12+ 8); | |
| 1694 Address DST (rsp, 12+12); | |
| 1695 Address DST_POS (rsp, 12+16); | |
| 1696 Address LENGTH (rsp, 12+20); | |
| 1697 | |
| 1698 //----------------------------------------------------------------------- | |
| 1699 // Assembler stub will be used for this call to arraycopy | |
| 1700 // if the following conditions are met: | |
| 1701 // | |
| 1702 // (1) src and dst must not be null. | |
| 1703 // (2) src_pos must not be negative. | |
| 1704 // (3) dst_pos must not be negative. | |
| 1705 // (4) length must not be negative. | |
| 1706 // (5) src klass and dst klass should be the same and not NULL. | |
| 1707 // (6) src and dst should be arrays. | |
| 1708 // (7) src_pos + length must not exceed length of src. | |
| 1709 // (8) dst_pos + length must not exceed length of dst. | |
| 1710 // | |
| 1711 | |
| 1712 const Register src = rax; // source array oop | |
| 1713 const Register src_pos = rsi; | |
| 1714 const Register dst = rdx; // destination array oop | |
| 1715 const Register dst_pos = rdi; | |
| 1716 const Register length = rcx; // transfer count | |
| 1717 | |
| 1718 // if (src == NULL) return -1; | |
| 304 | 1719 __ movptr(src, SRC); // src oop |
| 1720 __ testptr(src, src); | |
| 0 | 1721 __ jccb(Assembler::zero, L_failed_0); |
| 1722 | |
| 1723 // if (src_pos < 0) return -1; | |
| 304 | 1724 __ movl2ptr(src_pos, SRC_POS); // src_pos |
| 0 | 1725 __ testl(src_pos, src_pos); |
| 1726 __ jccb(Assembler::negative, L_failed_0); | |
| 1727 | |
| 1728 // if (dst == NULL) return -1; | |
| 304 | 1729 __ movptr(dst, DST); // dst oop |
| 1730 __ testptr(dst, dst); | |
| 0 | 1731 __ jccb(Assembler::zero, L_failed_0); |
| 1732 | |
| 1733 // if (dst_pos < 0) return -1; | |
| 304 | 1734 __ movl2ptr(dst_pos, DST_POS); // dst_pos |
| 0 | 1735 __ testl(dst_pos, dst_pos); |
| 1736 __ jccb(Assembler::negative, L_failed_0); | |
| 1737 | |
| 1738 // if (length < 0) return -1; | |
| 304 | 1739 __ movl2ptr(length, LENGTH); // length |
| 0 | 1740 __ testl(length, length); |
| 1741 __ jccb(Assembler::negative, L_failed_0); | |
| 1742 | |
| 1743 // if (src->klass() == NULL) return -1; | |
| 1744 Address src_klass_addr(src, oopDesc::klass_offset_in_bytes()); | |
| 1745 Address dst_klass_addr(dst, oopDesc::klass_offset_in_bytes()); | |
| 1746 const Register rcx_src_klass = rcx; // array klass | |
| 304 | 1747 __ movptr(rcx_src_klass, Address(src, oopDesc::klass_offset_in_bytes())); |
| 0 | 1748 |
| 1749 #ifdef ASSERT | |
| 1750 // assert(src->klass() != NULL); | |
| 1751 BLOCK_COMMENT("assert klasses not null"); | |
| 1752 { Label L1, L2; | |
| 304 | 1753 __ testptr(rcx_src_klass, rcx_src_klass); |
| 0 | 1754 __ jccb(Assembler::notZero, L2); // it is broken if klass is NULL |
| 1755 __ bind(L1); | |
| 1756 __ stop("broken null klass"); | |
| 1757 __ bind(L2); | |
| 304 | 1758 __ cmpptr(dst_klass_addr, (int32_t)NULL_WORD); |
| 0 | 1759 __ jccb(Assembler::equal, L1); // this would be broken also |
| 1760 BLOCK_COMMENT("assert done"); | |
| 1761 } | |
| 1762 #endif //ASSERT | |
| 1763 | |
| 1764 // Load layout helper (32-bits) | |
| 1765 // | |
| 1766 // |array_tag| | header_size | element_type | |log2_element_size| | |
| 1767 // 32 30 24 16 8 2 0 | |
| 1768 // | |
| 1769 // array_tag: typeArray = 0x3, objArray = 0x2, non-array = 0x0 | |
| 1770 // | |
| 1771 | |
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1772 int lh_offset = in_bytes(Klass::layout_helper_offset()); |
| 0 | 1773 Address src_klass_lh_addr(rcx_src_klass, lh_offset); |
| 1774 | |
| 1775 // Handle objArrays completely differently... | |
| 1776 jint objArray_lh = Klass::array_layout_helper(T_OBJECT); | |
| 1777 __ cmpl(src_klass_lh_addr, objArray_lh); | |
| 1778 __ jcc(Assembler::equal, L_objArray); | |
| 1779 | |
| 1780 // if (src->klass() != dst->klass()) return -1; | |
| 304 | 1781 __ cmpptr(rcx_src_klass, dst_klass_addr); |
| 0 | 1782 __ jccb(Assembler::notEqual, L_failed_0); |
| 1783 | |
| 1784 const Register rcx_lh = rcx; // layout helper | |
| 1785 assert(rcx_lh == rcx_src_klass, "known alias"); | |
| 1786 __ movl(rcx_lh, src_klass_lh_addr); | |
| 1787 | |
| 1788 // if (!src->is_Array()) return -1; | |
| 1789 __ cmpl(rcx_lh, Klass::_lh_neutral_value); | |
| 1790 __ jcc(Assembler::greaterEqual, L_failed_0); // signed cmp | |
| 1791 | |
| 1792 // At this point, it is known to be a typeArray (array_tag 0x3). | |
| 1793 #ifdef ASSERT | |
| 1794 { Label L; | |
| 1795 __ cmpl(rcx_lh, (Klass::_lh_array_tag_type_value << Klass::_lh_array_tag_shift)); | |
| 1796 __ jcc(Assembler::greaterEqual, L); // signed cmp | |
| 1797 __ stop("must be a primitive array"); | |
| 1798 __ bind(L); | |
| 1799 } | |
| 1800 #endif | |
| 1801 | |
| 1802 assert_different_registers(src, src_pos, dst, dst_pos, rcx_lh); | |
| 1803 arraycopy_range_checks(src, src_pos, dst, dst_pos, LENGTH, L_failed); | |
| 1804 | |
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1805 // TypeArrayKlass |
| 0 | 1806 // |
| 1807 // src_addr = (src + array_header_in_bytes()) + (src_pos << log2elemsize); | |
| 1808 // dst_addr = (dst + array_header_in_bytes()) + (dst_pos << log2elemsize); | |
| 1809 // | |
| 1810 const Register rsi_offset = rsi; // array offset | |
| 1811 const Register src_array = src; // src array offset | |
| 1812 const Register dst_array = dst; // dst array offset | |
| 1813 const Register rdi_elsize = rdi; // log2 element size | |
| 1814 | |
| 304 | 1815 __ mov(rsi_offset, rcx_lh); |
| 1816 __ shrptr(rsi_offset, Klass::_lh_header_size_shift); | |
| 1817 __ andptr(rsi_offset, Klass::_lh_header_size_mask); // array_offset | |
| 1818 __ addptr(src_array, rsi_offset); // src array offset | |
| 1819 __ addptr(dst_array, rsi_offset); // dst array offset | |
| 1820 __ andptr(rcx_lh, Klass::_lh_log2_element_size_mask); // log2 elsize | |
| 0 | 1821 |
| 1822 // next registers should be set before the jump to corresponding stub | |
| 1823 const Register from = src; // source array address | |
| 1824 const Register to = dst; // destination array address | |
| 1825 const Register count = rcx; // elements count | |
| 1826 // some of them should be duplicated on stack | |
| 1827 #define FROM Address(rsp, 12+ 4) | |
| 1828 #define TO Address(rsp, 12+ 8) // Not used now | |
| 1829 #define COUNT Address(rsp, 12+12) // Only for oop arraycopy | |
| 1830 | |
| 1831 BLOCK_COMMENT("scale indexes to element size"); | |
| 304 | 1832 __ movl2ptr(rsi, SRC_POS); // src_pos |
| 1833 __ shlptr(rsi); // src_pos << rcx (log2 elsize) | |
| 0 | 1834 assert(src_array == from, ""); |
| 304 | 1835 __ addptr(from, rsi); // from = src_array + SRC_POS << log2 elsize |
| 1836 __ movl2ptr(rdi, DST_POS); // dst_pos | |
| 1837 __ shlptr(rdi); // dst_pos << rcx (log2 elsize) | |
| 0 | 1838 assert(dst_array == to, ""); |
| 304 | 1839 __ addptr(to, rdi); // to = dst_array + DST_POS << log2 elsize |
| 1840 __ movptr(FROM, from); // src_addr | |
| 1841 __ mov(rdi_elsize, rcx_lh); // log2 elsize | |
| 1842 __ movl2ptr(count, LENGTH); // elements count | |
| 0 | 1843 |
| 1844 BLOCK_COMMENT("choose copy loop based on element size"); | |
| 1845 __ cmpl(rdi_elsize, 0); | |
| 1846 | |
| 1847 __ jump_cc(Assembler::equal, RuntimeAddress(entry_jbyte_arraycopy)); | |
| 1848 __ cmpl(rdi_elsize, LogBytesPerShort); | |
| 1849 __ jump_cc(Assembler::equal, RuntimeAddress(entry_jshort_arraycopy)); | |
| 1850 __ cmpl(rdi_elsize, LogBytesPerInt); | |
| 1851 __ jump_cc(Assembler::equal, RuntimeAddress(entry_jint_arraycopy)); | |
| 1852 #ifdef ASSERT | |
| 1853 __ cmpl(rdi_elsize, LogBytesPerLong); | |
| 1854 __ jccb(Assembler::notEqual, L_failed); | |
| 1855 #endif | |
| 304 | 1856 __ pop(rdi); // Do pops here since jlong_arraycopy stub does not do it. |
| 1857 __ pop(rsi); | |
| 0 | 1858 __ jump(RuntimeAddress(entry_jlong_arraycopy)); |
| 1859 | |
| 1860 __ BIND(L_failed); | |
| 304 | 1861 __ xorptr(rax, rax); |
| 1862 __ notptr(rax); // return -1 | |
| 1863 __ pop(rdi); | |
| 1864 __ pop(rsi); | |
| 0 | 1865 __ leave(); // required for proper stackwalking of RuntimeStub frame |
| 1866 __ ret(0); | |
| 1867 | |
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1868 // ObjArrayKlass |
| 0 | 1869 __ BIND(L_objArray); |
| 1870 // live at this point: rcx_src_klass, src[_pos], dst[_pos] | |
| 1871 | |
| 1872 Label L_plain_copy, L_checkcast_copy; | |
| 1873 // test array classes for subtyping | |
| 304 | 1874 __ cmpptr(rcx_src_klass, dst_klass_addr); // usual case is exact equality |
| 0 | 1875 __ jccb(Assembler::notEqual, L_checkcast_copy); |
| 1876 | |
| 1877 // Identically typed arrays can be copied without element-wise checks. | |
| 1878 assert_different_registers(src, src_pos, dst, dst_pos, rcx_src_klass); | |
| 1879 arraycopy_range_checks(src, src_pos, dst, dst_pos, LENGTH, L_failed); | |
| 1880 | |
| 1881 __ BIND(L_plain_copy); | |
| 304 | 1882 __ movl2ptr(count, LENGTH); // elements count |
| 1883 __ movl2ptr(src_pos, SRC_POS); // reload src_pos | |
| 1884 __ lea(from, Address(src, src_pos, Address::times_ptr, | |
| 1885 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // src_addr | |
| 1886 __ movl2ptr(dst_pos, DST_POS); // reload dst_pos | |
| 1887 __ lea(to, Address(dst, dst_pos, Address::times_ptr, | |
| 1888 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // dst_addr | |
| 1889 __ movptr(FROM, from); // src_addr | |
| 1890 __ movptr(TO, to); // dst_addr | |
| 0 | 1891 __ movl(COUNT, count); // count |
| 1892 __ jump(RuntimeAddress(entry_oop_arraycopy)); | |
| 1893 | |
| 1894 __ BIND(L_checkcast_copy); | |
| 1895 // live at this point: rcx_src_klass, dst[_pos], src[_pos] | |
| 1896 { | |
| 1897 // Handy offsets: | |
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1898 int ek_offset = in_bytes(ObjArrayKlass::element_klass_offset()); |
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1899 int sco_offset = in_bytes(Klass::super_check_offset_offset()); |
| 0 | 1900 |
| 1901 Register rsi_dst_klass = rsi; | |
| 1902 Register rdi_temp = rdi; | |
| 1903 assert(rsi_dst_klass == src_pos, "expected alias w/ src_pos"); | |
| 1904 assert(rdi_temp == dst_pos, "expected alias w/ dst_pos"); | |
| 1905 Address dst_klass_lh_addr(rsi_dst_klass, lh_offset); | |
| 1906 | |
| 1907 // Before looking at dst.length, make sure dst is also an objArray. | |
| 304 | 1908 __ movptr(rsi_dst_klass, dst_klass_addr); |
| 0 | 1909 __ cmpl(dst_klass_lh_addr, objArray_lh); |
| 1910 __ jccb(Assembler::notEqual, L_failed); | |
| 1911 | |
| 1912 // It is safe to examine both src.length and dst.length. | |
| 304 | 1913 __ movl2ptr(src_pos, SRC_POS); // reload rsi |
| 0 | 1914 arraycopy_range_checks(src, src_pos, dst, dst_pos, LENGTH, L_failed); |
| 1915 // (Now src_pos and dst_pos are killed, but not src and dst.) | |
| 1916 | |
| 1917 // We'll need this temp (don't forget to pop it after the type check). | |
| 304 | 1918 __ push(rbx); |
| 0 | 1919 Register rbx_src_klass = rbx; |
| 1920 | |
| 304 | 1921 __ mov(rbx_src_klass, rcx_src_klass); // spill away from rcx |
| 1922 __ movptr(rsi_dst_klass, dst_klass_addr); | |
| 0 | 1923 Address super_check_offset_addr(rsi_dst_klass, sco_offset); |
| 1924 Label L_fail_array_check; | |
| 1925 generate_type_check(rbx_src_klass, | |
| 1926 super_check_offset_addr, dst_klass_addr, | |
| 1927 rdi_temp, NULL, &L_fail_array_check); | |
| 1928 // (On fall-through, we have passed the array type check.) | |
| 304 | 1929 __ pop(rbx); |
| 0 | 1930 __ jmp(L_plain_copy); |
| 1931 | |
| 1932 __ BIND(L_fail_array_check); | |
| 1933 // Reshuffle arguments so we can call checkcast_arraycopy: | |
| 1934 | |
| 1935 // match initial saves for checkcast_arraycopy | |
| 304 | 1936 // push(rsi); // already done; see above |
| 1937 // push(rdi); // already done; see above | |
| 1938 // push(rbx); // already done; see above | |
| 0 | 1939 |
| 1940 // Marshal outgoing arguments now, freeing registers. | |
| 1941 Address from_arg(rsp, 16+ 4); // from | |
| 1942 Address to_arg(rsp, 16+ 8); // to | |
| 1943 Address length_arg(rsp, 16+12); // elements count | |
| 1944 Address ckoff_arg(rsp, 16+16); // super_check_offset | |
| 1945 Address ckval_arg(rsp, 16+20); // super_klass | |
| 1946 | |
| 1947 Address SRC_POS_arg(rsp, 16+ 8); | |
| 1948 Address DST_POS_arg(rsp, 16+16); | |
| 1949 Address LENGTH_arg(rsp, 16+20); | |
| 1950 // push rbx, changed the incoming offsets (why not just use rbp,??) | |
| 1951 // assert(SRC_POS_arg.disp() == SRC_POS.disp() + 4, ""); | |
| 1952 | |
| 304 | 1953 __ movptr(rbx, Address(rsi_dst_klass, ek_offset)); |
| 1954 __ movl2ptr(length, LENGTH_arg); // reload elements count | |
| 1955 __ movl2ptr(src_pos, SRC_POS_arg); // reload src_pos | |
| 1956 __ movl2ptr(dst_pos, DST_POS_arg); // reload dst_pos | |
| 0 | 1957 |
| 304 | 1958 __ movptr(ckval_arg, rbx); // destination element type |
| 0 | 1959 __ movl(rbx, Address(rbx, sco_offset)); |
| 1960 __ movl(ckoff_arg, rbx); // corresponding class check offset | |
| 1961 | |
| 1962 __ movl(length_arg, length); // outgoing length argument | |
| 1963 | |
| 304 | 1964 __ lea(from, Address(src, src_pos, Address::times_ptr, |
| 0 | 1965 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
| 304 | 1966 __ movptr(from_arg, from); |
| 0 | 1967 |
| 304 | 1968 __ lea(to, Address(dst, dst_pos, Address::times_ptr, |
| 0 | 1969 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
| 304 | 1970 __ movptr(to_arg, to); |
| 0 | 1971 __ jump(RuntimeAddress(entry_checkcast_arraycopy)); |
| 1972 } | |
| 1973 | |
| 1974 return start; | |
| 1975 } | |
| 1976 | |
| 1977 void generate_arraycopy_stubs() { | |
| 1978 address entry; | |
| 1979 address entry_jbyte_arraycopy; | |
| 1980 address entry_jshort_arraycopy; | |
| 1981 address entry_jint_arraycopy; | |
| 1982 address entry_oop_arraycopy; | |
| 1983 address entry_jlong_arraycopy; | |
| 1984 address entry_checkcast_arraycopy; | |
| 1985 | |
| 1986 StubRoutines::_arrayof_jbyte_disjoint_arraycopy = | |
| 1987 generate_disjoint_copy(T_BYTE, true, Address::times_1, &entry, | |
| 1988 "arrayof_jbyte_disjoint_arraycopy"); | |
| 1989 StubRoutines::_arrayof_jbyte_arraycopy = | |
| 1990 generate_conjoint_copy(T_BYTE, true, Address::times_1, entry, | |
| 1991 NULL, "arrayof_jbyte_arraycopy"); | |
| 1992 StubRoutines::_jbyte_disjoint_arraycopy = | |
| 1993 generate_disjoint_copy(T_BYTE, false, Address::times_1, &entry, | |
| 1994 "jbyte_disjoint_arraycopy"); | |
| 1995 StubRoutines::_jbyte_arraycopy = | |
| 1996 generate_conjoint_copy(T_BYTE, false, Address::times_1, entry, | |
| 1997 &entry_jbyte_arraycopy, "jbyte_arraycopy"); | |
| 1998 | |
| 1999 StubRoutines::_arrayof_jshort_disjoint_arraycopy = | |
| 2000 generate_disjoint_copy(T_SHORT, true, Address::times_2, &entry, | |
| 2001 "arrayof_jshort_disjoint_arraycopy"); | |
| 2002 StubRoutines::_arrayof_jshort_arraycopy = | |
| 2003 generate_conjoint_copy(T_SHORT, true, Address::times_2, entry, | |
| 2004 NULL, "arrayof_jshort_arraycopy"); | |
| 2005 StubRoutines::_jshort_disjoint_arraycopy = | |
| 2006 generate_disjoint_copy(T_SHORT, false, Address::times_2, &entry, | |
| 2007 "jshort_disjoint_arraycopy"); | |
| 2008 StubRoutines::_jshort_arraycopy = | |
| 2009 generate_conjoint_copy(T_SHORT, false, Address::times_2, entry, | |
| 2010 &entry_jshort_arraycopy, "jshort_arraycopy"); | |
| 2011 | |
| 2012 // Next arrays are always aligned on 4 bytes at least. | |
| 2013 StubRoutines::_jint_disjoint_arraycopy = | |
| 2014 generate_disjoint_copy(T_INT, true, Address::times_4, &entry, | |
| 2015 "jint_disjoint_arraycopy"); | |
| 2016 StubRoutines::_jint_arraycopy = | |
| 2017 generate_conjoint_copy(T_INT, true, Address::times_4, entry, | |
| 2018 &entry_jint_arraycopy, "jint_arraycopy"); | |
| 2019 | |
| 2020 StubRoutines::_oop_disjoint_arraycopy = | |
| 304 | 2021 generate_disjoint_copy(T_OBJECT, true, Address::times_ptr, &entry, |
| 0 | 2022 "oop_disjoint_arraycopy"); |
| 2023 StubRoutines::_oop_arraycopy = | |
| 304 | 2024 generate_conjoint_copy(T_OBJECT, true, Address::times_ptr, entry, |
| 0 | 2025 &entry_oop_arraycopy, "oop_arraycopy"); |
| 2026 | |
| 2324 | 2027 StubRoutines::_oop_disjoint_arraycopy_uninit = |
| 2028 generate_disjoint_copy(T_OBJECT, true, Address::times_ptr, &entry, | |
| 2029 "oop_disjoint_arraycopy_uninit", | |
| 2030 /*dest_uninitialized*/true); | |
| 2031 StubRoutines::_oop_arraycopy_uninit = | |
| 2032 generate_conjoint_copy(T_OBJECT, true, Address::times_ptr, entry, | |
| 2033 NULL, "oop_arraycopy_uninit", | |
| 2034 /*dest_uninitialized*/true); | |
| 2035 | |
| 0 | 2036 StubRoutines::_jlong_disjoint_arraycopy = |
| 2037 generate_disjoint_long_copy(&entry, "jlong_disjoint_arraycopy"); | |
| 2038 StubRoutines::_jlong_arraycopy = | |
| 2039 generate_conjoint_long_copy(entry, &entry_jlong_arraycopy, | |
| 2040 "jlong_arraycopy"); | |
| 2041 | |
| 1763 | 2042 StubRoutines::_jbyte_fill = generate_fill(T_BYTE, false, "jbyte_fill"); |
| 2043 StubRoutines::_jshort_fill = generate_fill(T_SHORT, false, "jshort_fill"); | |
| 2044 StubRoutines::_jint_fill = generate_fill(T_INT, false, "jint_fill"); | |
| 2045 StubRoutines::_arrayof_jbyte_fill = generate_fill(T_BYTE, true, "arrayof_jbyte_fill"); | |
| 2046 StubRoutines::_arrayof_jshort_fill = generate_fill(T_SHORT, true, "arrayof_jshort_fill"); | |
| 2047 StubRoutines::_arrayof_jint_fill = generate_fill(T_INT, true, "arrayof_jint_fill"); | |
| 2048 | |
| 2324 | 2049 StubRoutines::_arrayof_jint_disjoint_arraycopy = StubRoutines::_jint_disjoint_arraycopy; |
| 2050 StubRoutines::_arrayof_oop_disjoint_arraycopy = StubRoutines::_oop_disjoint_arraycopy; | |
| 2051 StubRoutines::_arrayof_oop_disjoint_arraycopy_uninit = StubRoutines::_oop_disjoint_arraycopy_uninit; | |
| 2052 StubRoutines::_arrayof_jlong_disjoint_arraycopy = StubRoutines::_jlong_disjoint_arraycopy; | |
| 0 | 2053 |
| 2324 | 2054 StubRoutines::_arrayof_jint_arraycopy = StubRoutines::_jint_arraycopy; |
| 2055 StubRoutines::_arrayof_oop_arraycopy = StubRoutines::_oop_arraycopy; | |
| 2056 StubRoutines::_arrayof_oop_arraycopy_uninit = StubRoutines::_oop_arraycopy_uninit; | |
| 2057 StubRoutines::_arrayof_jlong_arraycopy = StubRoutines::_jlong_arraycopy; | |
| 0 | 2058 |
| 2059 StubRoutines::_checkcast_arraycopy = | |
| 2324 | 2060 generate_checkcast_copy("checkcast_arraycopy", &entry_checkcast_arraycopy); |
| 2061 StubRoutines::_checkcast_arraycopy_uninit = | |
| 2062 generate_checkcast_copy("checkcast_arraycopy_uninit", NULL, /*dest_uninitialized*/true); | |
| 0 | 2063 |
| 2064 StubRoutines::_unsafe_arraycopy = | |
| 2065 generate_unsafe_copy("unsafe_arraycopy", | |
| 2066 entry_jbyte_arraycopy, | |
| 2067 entry_jshort_arraycopy, | |
| 2068 entry_jint_arraycopy, | |
| 2069 entry_jlong_arraycopy); | |
| 2070 | |
| 2071 StubRoutines::_generic_arraycopy = | |
| 2072 generate_generic_copy("generic_arraycopy", | |
| 2073 entry_jbyte_arraycopy, | |
| 2074 entry_jshort_arraycopy, | |
| 2075 entry_jint_arraycopy, | |
| 2076 entry_oop_arraycopy, | |
| 2077 entry_jlong_arraycopy, | |
| 2078 entry_checkcast_arraycopy); | |
| 2079 } | |
| 2080 | |
|
1174
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|
2081 void generate_math_stubs() { |
|
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|
2082 { |
|
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|
2083 StubCodeMark mark(this, "StubRoutines", "log"); |
|
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|
2084 StubRoutines::_intrinsic_log = (double (*)(double)) __ pc(); |
|
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|
2085 |
|
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|
2086 __ fld_d(Address(rsp, 4)); |
|
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|
2087 __ flog(); |
|
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|
2088 __ ret(0); |
|
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|
2089 } |
|
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2090 { |
|
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|
2091 StubCodeMark mark(this, "StubRoutines", "log10"); |
|
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2092 StubRoutines::_intrinsic_log10 = (double (*)(double)) __ pc(); |
|
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|
2093 |
|
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|
2094 __ fld_d(Address(rsp, 4)); |
|
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|
2095 __ flog10(); |
|
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|
2096 __ ret(0); |
|
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|
2097 } |
|
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2098 { |
|
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|
2099 StubCodeMark mark(this, "StubRoutines", "sin"); |
|
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2100 StubRoutines::_intrinsic_sin = (double (*)(double)) __ pc(); |
|
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2101 |
|
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2102 __ fld_d(Address(rsp, 4)); |
|
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2103 __ trigfunc('s'); |
|
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2104 __ ret(0); |
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|
2105 } |
|
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2106 { |
|
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|
2107 StubCodeMark mark(this, "StubRoutines", "cos"); |
|
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2108 StubRoutines::_intrinsic_cos = (double (*)(double)) __ pc(); |
|
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|
2109 |
|
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2110 __ fld_d(Address(rsp, 4)); |
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2111 __ trigfunc('c'); |
|
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2112 __ ret(0); |
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2113 } |
|
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2114 { |
|
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2115 StubCodeMark mark(this, "StubRoutines", "tan"); |
|
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2116 StubRoutines::_intrinsic_tan = (double (*)(double)) __ pc(); |
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2117 |
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2118 __ fld_d(Address(rsp, 4)); |
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2119 __ trigfunc('t'); |
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2120 __ ret(0); |
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2121 } |
|
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2122 { |
|
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2123 StubCodeMark mark(this, "StubRoutines", "exp"); |
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2124 StubRoutines::_intrinsic_exp = (double (*)(double)) __ pc(); |
|
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2125 |
|
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2126 __ fld_d(Address(rsp, 4)); |
|
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2127 __ exp_with_fallback(0); |
|
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2128 __ ret(0); |
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2129 } |
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2130 { |
|
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2131 StubCodeMark mark(this, "StubRoutines", "pow"); |
|
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2132 StubRoutines::_intrinsic_pow = (double (*)(double,double)) __ pc(); |
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|
2133 |
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2134 __ fld_d(Address(rsp, 12)); |
|
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2135 __ fld_d(Address(rsp, 4)); |
|
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2136 __ pow_with_fallback(0); |
|
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|
2137 __ ret(0); |
|
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|
2138 } |
|
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2139 } |
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|
2140 |
| 6894 | 2141 // AES intrinsic stubs |
| 2142 enum {AESBlockSize = 16}; | |
| 2143 | |
| 2144 address generate_key_shuffle_mask() { | |
| 2145 __ align(16); | |
| 2146 StubCodeMark mark(this, "StubRoutines", "key_shuffle_mask"); | |
| 2147 address start = __ pc(); | |
| 2148 __ emit_data(0x00010203, relocInfo::none, 0 ); | |
| 2149 __ emit_data(0x04050607, relocInfo::none, 0 ); | |
| 2150 __ emit_data(0x08090a0b, relocInfo::none, 0 ); | |
| 2151 __ emit_data(0x0c0d0e0f, relocInfo::none, 0 ); | |
| 2152 return start; | |
| 2153 } | |
| 2154 | |
| 2155 // Utility routine for loading a 128-bit key word in little endian format | |
| 2156 // can optionally specify that the shuffle mask is already in an xmmregister | |
| 2157 void load_key(XMMRegister xmmdst, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) { | |
| 2158 __ movdqu(xmmdst, Address(key, offset)); | |
| 2159 if (xmm_shuf_mask != NULL) { | |
| 2160 __ pshufb(xmmdst, xmm_shuf_mask); | |
| 2161 } else { | |
| 2162 __ pshufb(xmmdst, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
| 2163 } | |
| 2164 } | |
| 2165 | |
| 2166 // aesenc using specified key+offset | |
| 2167 // can optionally specify that the shuffle mask is already in an xmmregister | |
| 2168 void aes_enc_key(XMMRegister xmmdst, XMMRegister xmmtmp, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) { | |
| 2169 load_key(xmmtmp, key, offset, xmm_shuf_mask); | |
| 2170 __ aesenc(xmmdst, xmmtmp); | |
| 2171 } | |
| 2172 | |
| 2173 // aesdec using specified key+offset | |
| 2174 // can optionally specify that the shuffle mask is already in an xmmregister | |
| 2175 void aes_dec_key(XMMRegister xmmdst, XMMRegister xmmtmp, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) { | |
| 2176 load_key(xmmtmp, key, offset, xmm_shuf_mask); | |
| 2177 __ aesdec(xmmdst, xmmtmp); | |
| 2178 } | |
| 2179 | |
| 2180 | |
| 2181 // Arguments: | |
| 2182 // | |
| 2183 // Inputs: | |
| 2184 // c_rarg0 - source byte array address | |
| 2185 // c_rarg1 - destination byte array address | |
| 2186 // c_rarg2 - K (key) in little endian int array | |
| 2187 // | |
| 2188 address generate_aescrypt_encryptBlock() { | |
| 7427 | 2189 assert(UseAES, "need AES instructions and misaligned SSE support"); |
| 6894 | 2190 __ align(CodeEntryAlignment); |
| 2191 StubCodeMark mark(this, "StubRoutines", "aescrypt_encryptBlock"); | |
| 2192 Label L_doLast; | |
| 2193 address start = __ pc(); | |
| 2194 | |
| 7427 | 2195 const Register from = rdx; // source array address |
| 6894 | 2196 const Register to = rdx; // destination array address |
| 2197 const Register key = rcx; // key array address | |
| 2198 const Register keylen = rax; | |
| 2199 const Address from_param(rbp, 8+0); | |
| 2200 const Address to_param (rbp, 8+4); | |
| 2201 const Address key_param (rbp, 8+8); | |
| 2202 | |
| 2203 const XMMRegister xmm_result = xmm0; | |
| 7427 | 2204 const XMMRegister xmm_key_shuf_mask = xmm1; |
| 2205 const XMMRegister xmm_temp1 = xmm2; | |
| 2206 const XMMRegister xmm_temp2 = xmm3; | |
| 2207 const XMMRegister xmm_temp3 = xmm4; | |
| 2208 const XMMRegister xmm_temp4 = xmm5; | |
| 2209 | |
| 2210 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 2211 __ movptr(from, from_param); | |
| 2212 __ movptr(key, key_param); | |
| 2213 | |
| 2214 // keylen could be only {11, 13, 15} * 4 = {44, 52, 60} | |
| 6894 | 2215 __ movl(keylen, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); |
| 2216 | |
| 2217 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
| 2218 __ movdqu(xmm_result, Address(from, 0)); // get 16 bytes of input | |
| 7427 | 2219 __ movptr(to, to_param); |
| 6894 | 2220 |
| 2221 // For encryption, the java expanded key ordering is just what we need | |
| 2222 | |
| 7427 | 2223 load_key(xmm_temp1, key, 0x00, xmm_key_shuf_mask); |
| 2224 __ pxor(xmm_result, xmm_temp1); | |
| 2225 | |
| 2226 load_key(xmm_temp1, key, 0x10, xmm_key_shuf_mask); | |
| 2227 load_key(xmm_temp2, key, 0x20, xmm_key_shuf_mask); | |
| 2228 load_key(xmm_temp3, key, 0x30, xmm_key_shuf_mask); | |
| 2229 load_key(xmm_temp4, key, 0x40, xmm_key_shuf_mask); | |
| 2230 | |
| 2231 __ aesenc(xmm_result, xmm_temp1); | |
| 2232 __ aesenc(xmm_result, xmm_temp2); | |
| 2233 __ aesenc(xmm_result, xmm_temp3); | |
| 2234 __ aesenc(xmm_result, xmm_temp4); | |
| 2235 | |
| 2236 load_key(xmm_temp1, key, 0x50, xmm_key_shuf_mask); | |
| 2237 load_key(xmm_temp2, key, 0x60, xmm_key_shuf_mask); | |
| 2238 load_key(xmm_temp3, key, 0x70, xmm_key_shuf_mask); | |
| 2239 load_key(xmm_temp4, key, 0x80, xmm_key_shuf_mask); | |
| 2240 | |
| 2241 __ aesenc(xmm_result, xmm_temp1); | |
| 2242 __ aesenc(xmm_result, xmm_temp2); | |
| 2243 __ aesenc(xmm_result, xmm_temp3); | |
| 2244 __ aesenc(xmm_result, xmm_temp4); | |
| 2245 | |
| 2246 load_key(xmm_temp1, key, 0x90, xmm_key_shuf_mask); | |
| 2247 load_key(xmm_temp2, key, 0xa0, xmm_key_shuf_mask); | |
| 2248 | |
| 2249 __ cmpl(keylen, 44); | |
| 2250 __ jccb(Assembler::equal, L_doLast); | |
| 2251 | |
| 2252 __ aesenc(xmm_result, xmm_temp1); | |
| 2253 __ aesenc(xmm_result, xmm_temp2); | |
| 2254 | |
| 2255 load_key(xmm_temp1, key, 0xb0, xmm_key_shuf_mask); | |
| 2256 load_key(xmm_temp2, key, 0xc0, xmm_key_shuf_mask); | |
| 2257 | |
| 2258 __ cmpl(keylen, 52); | |
| 2259 __ jccb(Assembler::equal, L_doLast); | |
| 2260 | |
| 2261 __ aesenc(xmm_result, xmm_temp1); | |
| 2262 __ aesenc(xmm_result, xmm_temp2); | |
| 2263 | |
| 2264 load_key(xmm_temp1, key, 0xd0, xmm_key_shuf_mask); | |
| 2265 load_key(xmm_temp2, key, 0xe0, xmm_key_shuf_mask); | |
| 6894 | 2266 |
| 2267 __ BIND(L_doLast); | |
| 7427 | 2268 __ aesenc(xmm_result, xmm_temp1); |
| 2269 __ aesenclast(xmm_result, xmm_temp2); | |
| 6894 | 2270 __ movdqu(Address(to, 0), xmm_result); // store the result |
| 2271 __ xorptr(rax, rax); // return 0 | |
| 2272 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
| 2273 __ ret(0); | |
| 2274 | |
| 2275 return start; | |
| 2276 } | |
| 2277 | |
| 2278 | |
| 2279 // Arguments: | |
| 2280 // | |
| 2281 // Inputs: | |
| 2282 // c_rarg0 - source byte array address | |
| 2283 // c_rarg1 - destination byte array address | |
| 2284 // c_rarg2 - K (key) in little endian int array | |
| 2285 // | |
| 2286 address generate_aescrypt_decryptBlock() { | |
| 7427 | 2287 assert(UseAES, "need AES instructions and misaligned SSE support"); |
| 6894 | 2288 __ align(CodeEntryAlignment); |
| 2289 StubCodeMark mark(this, "StubRoutines", "aescrypt_decryptBlock"); | |
| 2290 Label L_doLast; | |
| 2291 address start = __ pc(); | |
| 2292 | |
| 7427 | 2293 const Register from = rdx; // source array address |
| 6894 | 2294 const Register to = rdx; // destination array address |
| 2295 const Register key = rcx; // key array address | |
| 2296 const Register keylen = rax; | |
| 2297 const Address from_param(rbp, 8+0); | |
| 2298 const Address to_param (rbp, 8+4); | |
| 2299 const Address key_param (rbp, 8+8); | |
| 2300 | |
| 2301 const XMMRegister xmm_result = xmm0; | |
| 7427 | 2302 const XMMRegister xmm_key_shuf_mask = xmm1; |
| 2303 const XMMRegister xmm_temp1 = xmm2; | |
| 2304 const XMMRegister xmm_temp2 = xmm3; | |
| 2305 const XMMRegister xmm_temp3 = xmm4; | |
| 2306 const XMMRegister xmm_temp4 = xmm5; | |
| 6894 | 2307 |
| 2308 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 7427 | 2309 __ movptr(from, from_param); |
| 2310 __ movptr(key, key_param); | |
| 2311 | |
| 2312 // keylen could be only {11, 13, 15} * 4 = {44, 52, 60} | |
| 6894 | 2313 __ movl(keylen, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); |
| 2314 | |
| 2315 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
| 2316 __ movdqu(xmm_result, Address(from, 0)); | |
| 7427 | 2317 __ movptr(to, to_param); |
| 6894 | 2318 |
| 2319 // for decryption java expanded key ordering is rotated one position from what we want | |
| 2320 // so we start from 0x10 here and hit 0x00 last | |
| 2321 // we don't know if the key is aligned, hence not using load-execute form | |
| 7427 | 2322 load_key(xmm_temp1, key, 0x10, xmm_key_shuf_mask); |
| 2323 load_key(xmm_temp2, key, 0x20, xmm_key_shuf_mask); | |
| 2324 load_key(xmm_temp3, key, 0x30, xmm_key_shuf_mask); | |
| 2325 load_key(xmm_temp4, key, 0x40, xmm_key_shuf_mask); | |
| 2326 | |
| 2327 __ pxor (xmm_result, xmm_temp1); | |
| 2328 __ aesdec(xmm_result, xmm_temp2); | |
| 2329 __ aesdec(xmm_result, xmm_temp3); | |
| 2330 __ aesdec(xmm_result, xmm_temp4); | |
| 2331 | |
| 2332 load_key(xmm_temp1, key, 0x50, xmm_key_shuf_mask); | |
| 2333 load_key(xmm_temp2, key, 0x60, xmm_key_shuf_mask); | |
| 2334 load_key(xmm_temp3, key, 0x70, xmm_key_shuf_mask); | |
| 2335 load_key(xmm_temp4, key, 0x80, xmm_key_shuf_mask); | |
| 2336 | |
| 2337 __ aesdec(xmm_result, xmm_temp1); | |
| 2338 __ aesdec(xmm_result, xmm_temp2); | |
| 2339 __ aesdec(xmm_result, xmm_temp3); | |
| 2340 __ aesdec(xmm_result, xmm_temp4); | |
| 2341 | |
| 2342 load_key(xmm_temp1, key, 0x90, xmm_key_shuf_mask); | |
| 2343 load_key(xmm_temp2, key, 0xa0, xmm_key_shuf_mask); | |
| 2344 load_key(xmm_temp3, key, 0x00, xmm_key_shuf_mask); | |
| 2345 | |
| 2346 __ cmpl(keylen, 44); | |
| 2347 __ jccb(Assembler::equal, L_doLast); | |
| 2348 | |
| 2349 __ aesdec(xmm_result, xmm_temp1); | |
| 2350 __ aesdec(xmm_result, xmm_temp2); | |
| 2351 | |
| 2352 load_key(xmm_temp1, key, 0xb0, xmm_key_shuf_mask); | |
| 2353 load_key(xmm_temp2, key, 0xc0, xmm_key_shuf_mask); | |
| 2354 | |
| 2355 __ cmpl(keylen, 52); | |
| 2356 __ jccb(Assembler::equal, L_doLast); | |
| 2357 | |
| 2358 __ aesdec(xmm_result, xmm_temp1); | |
| 2359 __ aesdec(xmm_result, xmm_temp2); | |
| 2360 | |
| 2361 load_key(xmm_temp1, key, 0xd0, xmm_key_shuf_mask); | |
| 2362 load_key(xmm_temp2, key, 0xe0, xmm_key_shuf_mask); | |
| 6894 | 2363 |
| 2364 __ BIND(L_doLast); | |
| 7427 | 2365 __ aesdec(xmm_result, xmm_temp1); |
| 2366 __ aesdec(xmm_result, xmm_temp2); | |
| 2367 | |
| 6894 | 2368 // for decryption the aesdeclast operation is always on key+0x00 |
| 7427 | 2369 __ aesdeclast(xmm_result, xmm_temp3); |
| 6894 | 2370 __ movdqu(Address(to, 0), xmm_result); // store the result |
| 2371 __ xorptr(rax, rax); // return 0 | |
| 2372 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
| 2373 __ ret(0); | |
| 2374 | |
| 2375 return start; | |
| 2376 } | |
| 2377 | |
| 2378 void handleSOERegisters(bool saving) { | |
| 2379 const int saveFrameSizeInBytes = 4 * wordSize; | |
| 2380 const Address saved_rbx (rbp, -3 * wordSize); | |
| 2381 const Address saved_rsi (rbp, -2 * wordSize); | |
| 2382 const Address saved_rdi (rbp, -1 * wordSize); | |
| 2383 | |
| 2384 if (saving) { | |
| 2385 __ subptr(rsp, saveFrameSizeInBytes); | |
| 2386 __ movptr(saved_rsi, rsi); | |
| 2387 __ movptr(saved_rdi, rdi); | |
| 2388 __ movptr(saved_rbx, rbx); | |
| 2389 } else { | |
| 2390 // restoring | |
| 2391 __ movptr(rsi, saved_rsi); | |
| 2392 __ movptr(rdi, saved_rdi); | |
| 2393 __ movptr(rbx, saved_rbx); | |
| 2394 } | |
| 2395 } | |
| 2396 | |
| 2397 // Arguments: | |
| 2398 // | |
| 2399 // Inputs: | |
| 2400 // c_rarg0 - source byte array address | |
| 2401 // c_rarg1 - destination byte array address | |
| 2402 // c_rarg2 - K (key) in little endian int array | |
| 2403 // c_rarg3 - r vector byte array address | |
| 2404 // c_rarg4 - input length | |
| 2405 // | |
| 2406 address generate_cipherBlockChaining_encryptAESCrypt() { | |
| 7427 | 2407 assert(UseAES, "need AES instructions and misaligned SSE support"); |
| 6894 | 2408 __ align(CodeEntryAlignment); |
| 2409 StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_encryptAESCrypt"); | |
| 2410 address start = __ pc(); | |
| 2411 | |
| 2412 Label L_exit, L_key_192_256, L_key_256, L_loopTop_128, L_loopTop_192, L_loopTop_256; | |
| 2413 const Register from = rsi; // source array address | |
| 2414 const Register to = rdx; // destination array address | |
| 2415 const Register key = rcx; // key array address | |
| 2416 const Register rvec = rdi; // r byte array initialized from initvector array address | |
| 2417 // and left with the results of the last encryption block | |
| 2418 const Register len_reg = rbx; // src len (must be multiple of blocksize 16) | |
| 2419 const Register pos = rax; | |
| 2420 | |
| 2421 // xmm register assignments for the loops below | |
| 2422 const XMMRegister xmm_result = xmm0; | |
| 2423 const XMMRegister xmm_temp = xmm1; | |
| 2424 // first 6 keys preloaded into xmm2-xmm7 | |
| 2425 const int XMM_REG_NUM_KEY_FIRST = 2; | |
| 2426 const int XMM_REG_NUM_KEY_LAST = 7; | |
| 2427 const XMMRegister xmm_key0 = as_XMMRegister(XMM_REG_NUM_KEY_FIRST); | |
| 2428 | |
| 2429 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 2430 handleSOERegisters(true /*saving*/); | |
| 2431 | |
| 2432 // load registers from incoming parameters | |
| 2433 const Address from_param(rbp, 8+0); | |
| 2434 const Address to_param (rbp, 8+4); | |
| 2435 const Address key_param (rbp, 8+8); | |
| 2436 const Address rvec_param (rbp, 8+12); | |
| 2437 const Address len_param (rbp, 8+16); | |
| 2438 __ movptr(from , from_param); | |
| 2439 __ movptr(to , to_param); | |
| 2440 __ movptr(key , key_param); | |
| 2441 __ movptr(rvec , rvec_param); | |
| 2442 __ movptr(len_reg , len_param); | |
| 2443 | |
| 2444 const XMMRegister xmm_key_shuf_mask = xmm_temp; // used temporarily to swap key bytes up front | |
| 2445 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
| 2446 // load up xmm regs 2 thru 7 with keys 0-5 | |
| 2447 for (int rnum = XMM_REG_NUM_KEY_FIRST, offset = 0x00; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
| 2448 load_key(as_XMMRegister(rnum), key, offset, xmm_key_shuf_mask); | |
| 2449 offset += 0x10; | |
| 2450 } | |
| 2451 | |
| 2452 __ movdqu(xmm_result, Address(rvec, 0x00)); // initialize xmm_result with r vec | |
| 2453 | |
| 2454 // now split to different paths depending on the keylen (len in ints of AESCrypt.KLE array (52=192, or 60=256)) | |
| 2455 __ movl(rax, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); | |
| 2456 __ cmpl(rax, 44); | |
| 2457 __ jcc(Assembler::notEqual, L_key_192_256); | |
| 2458 | |
| 2459 // 128 bit code follows here | |
| 7427 | 2460 __ movl(pos, 0); |
| 6894 | 2461 __ align(OptoLoopAlignment); |
| 2462 __ BIND(L_loopTop_128); | |
| 2463 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input | |
| 2464 __ pxor (xmm_result, xmm_temp); // xor with the current r vector | |
| 2465 | |
| 2466 __ pxor (xmm_result, xmm_key0); // do the aes rounds | |
| 2467 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
| 2468 __ aesenc(xmm_result, as_XMMRegister(rnum)); | |
| 2469 } | |
| 2470 for (int key_offset = 0x60; key_offset <= 0x90; key_offset += 0x10) { | |
| 2471 aes_enc_key(xmm_result, xmm_temp, key, key_offset); | |
| 2472 } | |
| 2473 load_key(xmm_temp, key, 0xa0); | |
| 2474 __ aesenclast(xmm_result, xmm_temp); | |
| 2475 | |
| 2476 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
| 2477 // no need to store r to memory until we exit | |
| 2478 __ addptr(pos, AESBlockSize); | |
| 2479 __ subptr(len_reg, AESBlockSize); | |
| 2480 __ jcc(Assembler::notEqual, L_loopTop_128); | |
| 2481 | |
| 2482 __ BIND(L_exit); | |
| 2483 __ movdqu(Address(rvec, 0), xmm_result); // final value of r stored in rvec of CipherBlockChaining object | |
| 2484 | |
| 2485 handleSOERegisters(false /*restoring*/); | |
| 2486 __ movl(rax, 0); // return 0 (why?) | |
| 2487 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
| 2488 __ ret(0); | |
| 2489 | |
| 7427 | 2490 __ BIND(L_key_192_256); |
| 2491 // here rax = len in ints of AESCrypt.KLE array (52=192, or 60=256) | |
| 6894 | 2492 __ cmpl(rax, 52); |
| 2493 __ jcc(Assembler::notEqual, L_key_256); | |
| 2494 | |
| 2495 // 192-bit code follows here (could be changed to use more xmm registers) | |
| 7427 | 2496 __ movl(pos, 0); |
| 2497 __ align(OptoLoopAlignment); | |
| 2498 __ BIND(L_loopTop_192); | |
| 6894 | 2499 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input |
| 2500 __ pxor (xmm_result, xmm_temp); // xor with the current r vector | |
| 2501 | |
| 2502 __ pxor (xmm_result, xmm_key0); // do the aes rounds | |
| 2503 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
| 2504 __ aesenc(xmm_result, as_XMMRegister(rnum)); | |
| 2505 } | |
| 2506 for (int key_offset = 0x60; key_offset <= 0xb0; key_offset += 0x10) { | |
| 2507 aes_enc_key(xmm_result, xmm_temp, key, key_offset); | |
| 2508 } | |
| 2509 load_key(xmm_temp, key, 0xc0); | |
| 2510 __ aesenclast(xmm_result, xmm_temp); | |
| 2511 | |
| 2512 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
| 2513 // no need to store r to memory until we exit | |
| 2514 __ addptr(pos, AESBlockSize); | |
| 2515 __ subptr(len_reg, AESBlockSize); | |
| 2516 __ jcc(Assembler::notEqual, L_loopTop_192); | |
| 2517 __ jmp(L_exit); | |
| 2518 | |
| 7427 | 2519 __ BIND(L_key_256); |
| 6894 | 2520 // 256-bit code follows here (could be changed to use more xmm registers) |
| 7427 | 2521 __ movl(pos, 0); |
| 2522 __ align(OptoLoopAlignment); | |
| 2523 __ BIND(L_loopTop_256); | |
| 6894 | 2524 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input |
| 2525 __ pxor (xmm_result, xmm_temp); // xor with the current r vector | |
| 2526 | |
| 2527 __ pxor (xmm_result, xmm_key0); // do the aes rounds | |
| 2528 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
| 2529 __ aesenc(xmm_result, as_XMMRegister(rnum)); | |
| 2530 } | |
| 2531 for (int key_offset = 0x60; key_offset <= 0xd0; key_offset += 0x10) { | |
| 2532 aes_enc_key(xmm_result, xmm_temp, key, key_offset); | |
| 2533 } | |
| 2534 load_key(xmm_temp, key, 0xe0); | |
| 2535 __ aesenclast(xmm_result, xmm_temp); | |
| 2536 | |
| 2537 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
| 2538 // no need to store r to memory until we exit | |
| 2539 __ addptr(pos, AESBlockSize); | |
| 2540 __ subptr(len_reg, AESBlockSize); | |
| 2541 __ jcc(Assembler::notEqual, L_loopTop_256); | |
| 2542 __ jmp(L_exit); | |
| 2543 | |
| 2544 return start; | |
| 2545 } | |
| 2546 | |
| 2547 | |
| 2548 // CBC AES Decryption. | |
| 2549 // In 32-bit stub, because of lack of registers we do not try to parallelize 4 blocks at a time. | |
| 2550 // | |
| 2551 // Arguments: | |
| 2552 // | |
| 2553 // Inputs: | |
| 2554 // c_rarg0 - source byte array address | |
| 2555 // c_rarg1 - destination byte array address | |
| 2556 // c_rarg2 - K (key) in little endian int array | |
| 2557 // c_rarg3 - r vector byte array address | |
| 2558 // c_rarg4 - input length | |
| 2559 // | |
| 2560 | |
| 2561 address generate_cipherBlockChaining_decryptAESCrypt() { | |
| 7427 | 2562 assert(UseAES, "need AES instructions and misaligned SSE support"); |
| 6894 | 2563 __ align(CodeEntryAlignment); |
| 2564 StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_decryptAESCrypt"); | |
| 2565 address start = __ pc(); | |
| 2566 | |
| 2567 Label L_exit, L_key_192_256, L_key_256; | |
| 2568 Label L_singleBlock_loopTop_128; | |
| 2569 Label L_singleBlock_loopTop_192, L_singleBlock_loopTop_256; | |
| 2570 const Register from = rsi; // source array address | |
| 2571 const Register to = rdx; // destination array address | |
| 2572 const Register key = rcx; // key array address | |
| 2573 const Register rvec = rdi; // r byte array initialized from initvector array address | |
| 2574 // and left with the results of the last encryption block | |
| 2575 const Register len_reg = rbx; // src len (must be multiple of blocksize 16) | |
| 2576 const Register pos = rax; | |
| 2577 | |
| 2578 // xmm register assignments for the loops below | |
| 2579 const XMMRegister xmm_result = xmm0; | |
| 2580 const XMMRegister xmm_temp = xmm1; | |
| 2581 // first 6 keys preloaded into xmm2-xmm7 | |
| 2582 const int XMM_REG_NUM_KEY_FIRST = 2; | |
| 2583 const int XMM_REG_NUM_KEY_LAST = 7; | |
| 2584 const int FIRST_NON_REG_KEY_offset = 0x70; | |
| 2585 const XMMRegister xmm_key_first = as_XMMRegister(XMM_REG_NUM_KEY_FIRST); | |
| 2586 | |
| 2587 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 2588 handleSOERegisters(true /*saving*/); | |
| 2589 | |
| 2590 // load registers from incoming parameters | |
| 2591 const Address from_param(rbp, 8+0); | |
| 2592 const Address to_param (rbp, 8+4); | |
| 2593 const Address key_param (rbp, 8+8); | |
| 2594 const Address rvec_param (rbp, 8+12); | |
| 2595 const Address len_param (rbp, 8+16); | |
| 2596 __ movptr(from , from_param); | |
| 2597 __ movptr(to , to_param); | |
| 2598 __ movptr(key , key_param); | |
| 2599 __ movptr(rvec , rvec_param); | |
| 2600 __ movptr(len_reg , len_param); | |
| 2601 | |
| 2602 // the java expanded key ordering is rotated one position from what we want | |
| 2603 // so we start from 0x10 here and hit 0x00 last | |
| 2604 const XMMRegister xmm_key_shuf_mask = xmm1; // used temporarily to swap key bytes up front | |
| 2605 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
| 2606 // load up xmm regs 2 thru 6 with first 5 keys | |
| 2607 for (int rnum = XMM_REG_NUM_KEY_FIRST, offset = 0x10; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
| 2608 load_key(as_XMMRegister(rnum), key, offset, xmm_key_shuf_mask); | |
| 2609 offset += 0x10; | |
| 2610 } | |
| 2611 | |
| 2612 // inside here, use the rvec register to point to previous block cipher | |
| 2613 // with which we xor at the end of each newly decrypted block | |
| 2614 const Register prev_block_cipher_ptr = rvec; | |
| 2615 | |
| 2616 // now split to different paths depending on the keylen (len in ints of AESCrypt.KLE array (52=192, or 60=256)) | |
| 2617 __ movl(rax, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); | |
| 2618 __ cmpl(rax, 44); | |
| 2619 __ jcc(Assembler::notEqual, L_key_192_256); | |
| 2620 | |
| 2621 | |
| 2622 // 128-bit code follows here, parallelized | |
| 7427 | 2623 __ movl(pos, 0); |
| 2624 __ align(OptoLoopAlignment); | |
| 2625 __ BIND(L_singleBlock_loopTop_128); | |
| 6894 | 2626 __ cmpptr(len_reg, 0); // any blocks left?? |
| 2627 __ jcc(Assembler::equal, L_exit); | |
| 2628 __ movdqu(xmm_result, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of cipher input | |
| 2629 __ pxor (xmm_result, xmm_key_first); // do the aes dec rounds | |
| 2630 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
| 2631 __ aesdec(xmm_result, as_XMMRegister(rnum)); | |
| 2632 } | |
| 2633 for (int key_offset = FIRST_NON_REG_KEY_offset; key_offset <= 0xa0; key_offset += 0x10) { // 128-bit runs up to key offset a0 | |
| 2634 aes_dec_key(xmm_result, xmm_temp, key, key_offset); | |
| 2635 } | |
| 2636 load_key(xmm_temp, key, 0x00); // final key is stored in java expanded array at offset 0 | |
| 2637 __ aesdeclast(xmm_result, xmm_temp); | |
| 2638 __ movdqu(xmm_temp, Address(prev_block_cipher_ptr, 0x00)); | |
| 2639 __ pxor (xmm_result, xmm_temp); // xor with the current r vector | |
| 2640 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
| 2641 // no need to store r to memory until we exit | |
| 2642 __ lea(prev_block_cipher_ptr, Address(from, pos, Address::times_1, 0)); // set up new ptr | |
| 2643 __ addptr(pos, AESBlockSize); | |
| 2644 __ subptr(len_reg, AESBlockSize); | |
| 2645 __ jmp(L_singleBlock_loopTop_128); | |
| 2646 | |
| 2647 | |
| 2648 __ BIND(L_exit); | |
| 2649 __ movdqu(xmm_temp, Address(prev_block_cipher_ptr, 0x00)); | |
| 2650 __ movptr(rvec , rvec_param); // restore this since used in loop | |
| 2651 __ movdqu(Address(rvec, 0), xmm_temp); // final value of r stored in rvec of CipherBlockChaining object | |
| 2652 handleSOERegisters(false /*restoring*/); | |
| 2653 __ movl(rax, 0); // return 0 (why?) | |
| 2654 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
| 2655 __ ret(0); | |
| 2656 | |
| 2657 | |
| 2658 __ BIND(L_key_192_256); | |
| 2659 // here rax = len in ints of AESCrypt.KLE array (52=192, or 60=256) | |
| 2660 __ cmpl(rax, 52); | |
| 2661 __ jcc(Assembler::notEqual, L_key_256); | |
| 2662 | |
| 2663 // 192-bit code follows here (could be optimized to use parallelism) | |
| 7427 | 2664 __ movl(pos, 0); |
| 6894 | 2665 __ align(OptoLoopAlignment); |
| 2666 __ BIND(L_singleBlock_loopTop_192); | |
| 2667 __ movdqu(xmm_result, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of cipher input | |
| 2668 __ pxor (xmm_result, xmm_key_first); // do the aes dec rounds | |
| 2669 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
| 2670 __ aesdec(xmm_result, as_XMMRegister(rnum)); | |
| 2671 } | |
| 2672 for (int key_offset = FIRST_NON_REG_KEY_offset; key_offset <= 0xc0; key_offset += 0x10) { // 192-bit runs up to key offset c0 | |
| 2673 aes_dec_key(xmm_result, xmm_temp, key, key_offset); | |
| 2674 } | |
| 2675 load_key(xmm_temp, key, 0x00); // final key is stored in java expanded array at offset 0 | |
| 2676 __ aesdeclast(xmm_result, xmm_temp); | |
| 2677 __ movdqu(xmm_temp, Address(prev_block_cipher_ptr, 0x00)); | |
| 2678 __ pxor (xmm_result, xmm_temp); // xor with the current r vector | |
| 2679 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
| 2680 // no need to store r to memory until we exit | |
| 2681 __ lea(prev_block_cipher_ptr, Address(from, pos, Address::times_1, 0)); // set up new ptr | |
| 2682 __ addptr(pos, AESBlockSize); | |
| 2683 __ subptr(len_reg, AESBlockSize); | |
| 2684 __ jcc(Assembler::notEqual,L_singleBlock_loopTop_192); | |
| 2685 __ jmp(L_exit); | |
| 2686 | |
| 2687 __ BIND(L_key_256); | |
| 2688 // 256-bit code follows here (could be optimized to use parallelism) | |
| 7427 | 2689 __ movl(pos, 0); |
| 6894 | 2690 __ align(OptoLoopAlignment); |
| 2691 __ BIND(L_singleBlock_loopTop_256); | |
| 2692 __ movdqu(xmm_result, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of cipher input | |
| 2693 __ pxor (xmm_result, xmm_key_first); // do the aes dec rounds | |
| 2694 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
| 2695 __ aesdec(xmm_result, as_XMMRegister(rnum)); | |
| 2696 } | |
| 2697 for (int key_offset = FIRST_NON_REG_KEY_offset; key_offset <= 0xe0; key_offset += 0x10) { // 256-bit runs up to key offset e0 | |
| 2698 aes_dec_key(xmm_result, xmm_temp, key, key_offset); | |
| 2699 } | |
| 2700 load_key(xmm_temp, key, 0x00); // final key is stored in java expanded array at offset 0 | |
| 2701 __ aesdeclast(xmm_result, xmm_temp); | |
| 2702 __ movdqu(xmm_temp, Address(prev_block_cipher_ptr, 0x00)); | |
| 2703 __ pxor (xmm_result, xmm_temp); // xor with the current r vector | |
| 2704 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
| 2705 // no need to store r to memory until we exit | |
| 2706 __ lea(prev_block_cipher_ptr, Address(from, pos, Address::times_1, 0)); // set up new ptr | |
| 2707 __ addptr(pos, AESBlockSize); | |
| 2708 __ subptr(len_reg, AESBlockSize); | |
| 2709 __ jcc(Assembler::notEqual,L_singleBlock_loopTop_256); | |
| 2710 __ jmp(L_exit); | |
| 2711 | |
| 2712 return start; | |
| 2713 } | |
| 2714 | |
|
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|
2715 /** |
|
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|
2716 * Arguments: |
|
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|
2717 * |
|
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|
2718 * Inputs: |
|
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2719 * rsp(4) - int crc |
|
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2720 * rsp(8) - byte* buf |
|
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2721 * rsp(12) - int length |
|
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|
2722 * |
|
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|
2723 * Ouput: |
|
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2724 * rax - int crc result |
|
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|
2725 */ |
|
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|
2726 address generate_updateBytesCRC32() { |
|
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2727 assert(UseCRC32Intrinsics, "need AVX and CLMUL instructions"); |
|
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2728 |
|
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|
2729 __ align(CodeEntryAlignment); |
|
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2730 StubCodeMark mark(this, "StubRoutines", "updateBytesCRC32"); |
|
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2731 |
|
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|
2732 address start = __ pc(); |
|
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2733 |
|
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|
2734 const Register crc = rdx; // crc |
|
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2735 const Register buf = rsi; // source java byte array address |
|
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2736 const Register len = rcx; // length |
|
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2737 const Register table = rdi; // crc_table address (reuse register) |
|
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2738 const Register tmp = rbx; |
|
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|
2739 assert_different_registers(crc, buf, len, table, tmp, rax); |
|
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2740 |
|
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|
2741 BLOCK_COMMENT("Entry:"); |
|
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2742 __ enter(); // required for proper stackwalking of RuntimeStub frame |
|
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2743 __ push(rsi); |
|
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|
2744 __ push(rdi); |
|
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|
2745 __ push(rbx); |
|
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2746 |
|
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|
2747 Address crc_arg(rbp, 8 + 0); |
|
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|
2748 Address buf_arg(rbp, 8 + 4); |
|
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|
2749 Address len_arg(rbp, 8 + 8); |
|
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2750 |
|
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|
2751 // Load up: |
|
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2752 __ movl(crc, crc_arg); |
|
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|
2753 __ movptr(buf, buf_arg); |
|
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|
2754 __ movl(len, len_arg); |
|
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2755 |
|
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|
2756 __ kernel_crc32(crc, buf, len, table, tmp); |
|
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2757 |
|
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|
2758 __ movl(rax, crc); |
|
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|
2759 __ pop(rbx); |
|
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|
2760 __ pop(rdi); |
|
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|
2761 __ pop(rsi); |
|
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|
2762 __ leave(); // required for proper stackwalking of RuntimeStub frame |
|
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|
2763 __ ret(0); |
|
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|
2764 |
|
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|
2765 return start; |
|
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|
2766 } |
|
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|
2767 |
| 11127 | 2768 // Safefetch stubs. |
| 2769 void generate_safefetch(const char* name, int size, address* entry, | |
| 2770 address* fault_pc, address* continuation_pc) { | |
| 2771 // safefetch signatures: | |
| 2772 // int SafeFetch32(int* adr, int errValue); | |
| 2773 // intptr_t SafeFetchN (intptr_t* adr, intptr_t errValue); | |
| 2774 | |
| 2775 StubCodeMark mark(this, "StubRoutines", name); | |
| 2776 | |
| 2777 // Entry point, pc or function descriptor. | |
| 2778 *entry = __ pc(); | |
| 2779 | |
| 2780 __ movl(rax, Address(rsp, 0x8)); | |
| 2781 __ movl(rcx, Address(rsp, 0x4)); | |
| 2782 // Load *adr into eax, may fault. | |
| 2783 *fault_pc = __ pc(); | |
| 2784 switch (size) { | |
| 2785 case 4: | |
| 2786 // int32_t | |
| 2787 __ movl(rax, Address(rcx, 0)); | |
| 2788 break; | |
| 2789 case 8: | |
| 2790 // int64_t | |
| 2791 Unimplemented(); | |
| 2792 break; | |
| 2793 default: | |
| 2794 ShouldNotReachHere(); | |
| 2795 } | |
| 2796 | |
| 2797 // Return errValue or *adr. | |
| 2798 *continuation_pc = __ pc(); | |
| 2799 __ ret(0); | |
| 2800 } | |
| 6894 | 2801 |
| 0 | 2802 public: |
| 2803 // Information about frame layout at time of blocking runtime call. | |
| 2804 // Note that we only have to preserve callee-saved registers since | |
| 2805 // the compilers are responsible for supplying a continuation point | |
| 2806 // if they expect all registers to be preserved. | |
| 2807 enum layout { | |
| 2808 thread_off, // last_java_sp | |
|
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2809 arg1_off, |
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|
2810 arg2_off, |
| 0 | 2811 rbp_off, // callee saved register |
| 2812 ret_pc, | |
| 2813 framesize | |
| 2814 }; | |
| 2815 | |
| 2816 private: | |
| 2817 | |
| 2818 #undef __ | |
| 2819 #define __ masm-> | |
| 2820 | |
| 2821 //------------------------------------------------------------------------------------------------------------------------ | |
| 2822 // Continuation point for throwing of implicit exceptions that are not handled in | |
| 2823 // the current activation. Fabricates an exception oop and initiates normal | |
| 2824 // exception dispatching in this frame. | |
| 2825 // | |
| 2826 // Previously the compiler (c2) allowed for callee save registers on Java calls. | |
| 2827 // This is no longer true after adapter frames were removed but could possibly | |
| 2828 // be brought back in the future if the interpreter code was reworked and it | |
| 2829 // was deemed worthwhile. The comment below was left to describe what must | |
| 2830 // happen here if callee saves were resurrected. As it stands now this stub | |
| 2831 // could actually be a vanilla BufferBlob and have now oopMap at all. | |
| 2832 // Since it doesn't make much difference we've chosen to leave it the | |
| 2833 // way it was in the callee save days and keep the comment. | |
| 2834 | |
| 2835 // If we need to preserve callee-saved values we need a callee-saved oop map and | |
| 2836 // therefore have to make these stubs into RuntimeStubs rather than BufferBlobs. | |
| 2837 // If the compiler needs all registers to be preserved between the fault | |
| 2838 // point and the exception handler then it must assume responsibility for that in | |
| 2839 // AbstractCompiler::continuation_for_implicit_null_exception or | |
| 2840 // continuation_for_implicit_division_by_zero_exception. All other implicit | |
| 2841 // exceptions (e.g., NullPointerException or AbstractMethodError on entry) are | |
| 2842 // either at call sites or otherwise assume that stack unwinding will be initiated, | |
| 2843 // so caller saved registers were assumed volatile in the compiler. | |
| 2844 address generate_throw_exception(const char* name, address runtime_entry, | |
| 3937 | 2845 Register arg1 = noreg, Register arg2 = noreg) { |
| 0 | 2846 |
| 2847 int insts_size = 256; | |
| 2848 int locs_size = 32; | |
| 2849 | |
| 2850 CodeBuffer code(name, insts_size, locs_size); | |
| 2851 OopMapSet* oop_maps = new OopMapSet(); | |
| 2852 MacroAssembler* masm = new MacroAssembler(&code); | |
| 2853 | |
| 2854 address start = __ pc(); | |
| 2855 | |
| 2856 // This is an inlined and slightly modified version of call_VM | |
| 2857 // which has the ability to fetch the return PC out of | |
| 2858 // thread-local storage and also sets up last_Java_sp slightly | |
| 2859 // differently than the real call_VM | |
| 2860 Register java_thread = rbx; | |
| 2861 __ get_thread(java_thread); | |
| 2862 | |
| 2863 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 2864 | |
| 2865 // pc and rbp, already pushed | |
| 304 | 2866 __ subptr(rsp, (framesize-2) * wordSize); // prolog |
| 0 | 2867 |
| 2868 // Frame is now completed as far as size and linkage. | |
| 2869 | |
| 2870 int frame_complete = __ pc() - start; | |
| 2871 | |
| 2872 // push java thread (becomes first argument of C function) | |
| 304 | 2873 __ movptr(Address(rsp, thread_off * wordSize), java_thread); |
|
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2874 if (arg1 != noreg) { |
|
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2875 __ movptr(Address(rsp, arg1_off * wordSize), arg1); |
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2876 } |
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|
2877 if (arg2 != noreg) { |
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2878 assert(arg1 != noreg, "missing reg arg"); |
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2879 __ movptr(Address(rsp, arg2_off * wordSize), arg2); |
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|
2880 } |
| 0 | 2881 |
| 2882 // Set up last_Java_sp and last_Java_fp | |
| 2883 __ set_last_Java_frame(java_thread, rsp, rbp, NULL); | |
| 2884 | |
| 2885 // Call runtime | |
| 2886 BLOCK_COMMENT("call runtime_entry"); | |
| 2887 __ call(RuntimeAddress(runtime_entry)); | |
| 2888 // Generate oop map | |
| 2889 OopMap* map = new OopMap(framesize, 0); | |
| 2890 oop_maps->add_gc_map(__ pc() - start, map); | |
| 2891 | |
| 2892 // restore the thread (cannot use the pushed argument since arguments | |
| 2893 // may be overwritten by C code generated by an optimizing compiler); | |
| 2894 // however can use the register value directly if it is callee saved. | |
| 2895 __ get_thread(java_thread); | |
| 2896 | |
| 2897 __ reset_last_Java_frame(java_thread, true, false); | |
| 2898 | |
| 2899 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
| 2900 | |
| 2901 // check for pending exceptions | |
| 2902 #ifdef ASSERT | |
| 2903 Label L; | |
| 304 | 2904 __ cmpptr(Address(java_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
| 0 | 2905 __ jcc(Assembler::notEqual, L); |
| 2906 __ should_not_reach_here(); | |
| 2907 __ bind(L); | |
| 2908 #endif /* ASSERT */ | |
| 2909 __ jump(RuntimeAddress(StubRoutines::forward_exception_entry())); | |
| 2910 | |
| 2911 | |
| 2912 RuntimeStub* stub = RuntimeStub::new_runtime_stub(name, &code, frame_complete, framesize, oop_maps, false); | |
| 2913 return stub->entry_point(); | |
| 2914 } | |
| 2915 | |
| 2916 | |
| 2917 void create_control_words() { | |
| 2918 // Round to nearest, 53-bit mode, exceptions masked | |
| 2919 StubRoutines::_fpu_cntrl_wrd_std = 0x027F; | |
| 2920 // Round to zero, 53-bit mode, exception mased | |
| 2921 StubRoutines::_fpu_cntrl_wrd_trunc = 0x0D7F; | |
| 2922 // Round to nearest, 24-bit mode, exceptions masked | |
| 2923 StubRoutines::_fpu_cntrl_wrd_24 = 0x007F; | |
| 2924 // Round to nearest, 64-bit mode, exceptions masked | |
| 2925 StubRoutines::_fpu_cntrl_wrd_64 = 0x037F; | |
| 2926 // Round to nearest, 64-bit mode, exceptions masked | |
| 2927 StubRoutines::_mxcsr_std = 0x1F80; | |
| 2928 // Note: the following two constants are 80-bit values | |
| 2929 // layout is critical for correct loading by FPU. | |
| 2930 // Bias for strict fp multiply/divide | |
| 2931 StubRoutines::_fpu_subnormal_bias1[0]= 0x00000000; // 2^(-15360) == 0x03ff 8000 0000 0000 0000 | |
| 2932 StubRoutines::_fpu_subnormal_bias1[1]= 0x80000000; | |
| 2933 StubRoutines::_fpu_subnormal_bias1[2]= 0x03ff; | |
| 2934 // Un-Bias for strict fp multiply/divide | |
| 2935 StubRoutines::_fpu_subnormal_bias2[0]= 0x00000000; // 2^(+15360) == 0x7bff 8000 0000 0000 0000 | |
| 2936 StubRoutines::_fpu_subnormal_bias2[1]= 0x80000000; | |
| 2937 StubRoutines::_fpu_subnormal_bias2[2]= 0x7bff; | |
| 2938 } | |
| 2939 | |
| 2940 //--------------------------------------------------------------------------- | |
| 2941 // Initialization | |
| 2942 | |
| 2943 void generate_initial() { | |
| 2944 // Generates all stubs and initializes the entry points | |
| 2945 | |
| 2946 //------------------------------------------------------------------------------------------------------------------------ | |
| 2947 // entry points that exist in all platforms | |
| 2948 // Note: This is code that could be shared among different platforms - however the benefit seems to be smaller than | |
| 2949 // the disadvantage of having a much more complicated generator structure. See also comment in stubRoutines.hpp. | |
| 2950 StubRoutines::_forward_exception_entry = generate_forward_exception(); | |
| 2951 | |
| 2952 StubRoutines::_call_stub_entry = | |
| 2953 generate_call_stub(StubRoutines::_call_stub_return_address); | |
| 2954 // is referenced by megamorphic call | |
| 2955 StubRoutines::_catch_exception_entry = generate_catch_exception(); | |
| 2956 | |
| 2957 // These are currently used by Solaris/Intel | |
| 2958 StubRoutines::_atomic_xchg_entry = generate_atomic_xchg(); | |
| 2959 | |
| 2960 StubRoutines::_handler_for_unsafe_access_entry = | |
| 2961 generate_handler_for_unsafe_access(); | |
| 2962 | |
| 2963 // platform dependent | |
| 2964 create_control_words(); | |
| 2965 | |
| 304 | 2966 StubRoutines::x86::_verify_mxcsr_entry = generate_verify_mxcsr(); |
| 2967 StubRoutines::x86::_verify_fpu_cntrl_wrd_entry = generate_verify_fpu_cntrl_wrd(); | |
| 0 | 2968 StubRoutines::_d2i_wrapper = generate_d2i_wrapper(T_INT, |
| 2969 CAST_FROM_FN_PTR(address, SharedRuntime::d2i)); | |
| 2970 StubRoutines::_d2l_wrapper = generate_d2i_wrapper(T_LONG, | |
| 2971 CAST_FROM_FN_PTR(address, SharedRuntime::d2l)); | |
|
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2972 |
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2973 // Build this early so it's available for the interpreter |
| 4743 | 2974 StubRoutines::_throw_StackOverflowError_entry = generate_throw_exception("StackOverflowError throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_StackOverflowError)); |
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2975 |
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2976 if (UseCRC32Intrinsics) { |
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2977 // set table address before stub generation which use it |
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2978 StubRoutines::_crc_table_adr = (address)StubRoutines::x86::_crc_table; |
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2979 StubRoutines::_updateBytesCRC32 = generate_updateBytesCRC32(); |
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2980 } |
| 0 | 2981 } |
| 2982 | |
| 2983 | |
| 2984 void generate_all() { | |
| 2985 // Generates all stubs and initializes the entry points | |
| 2986 | |
| 2987 // These entry points require SharedInfo::stack0 to be set up in non-core builds | |
| 2988 // and need to be relocatable, so they each fabricate a RuntimeStub internally. | |
| 3937 | 2989 StubRoutines::_throw_AbstractMethodError_entry = generate_throw_exception("AbstractMethodError throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_AbstractMethodError)); |
| 2990 StubRoutines::_throw_IncompatibleClassChangeError_entry= generate_throw_exception("IncompatibleClassChangeError throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_IncompatibleClassChangeError)); | |
| 2991 StubRoutines::_throw_NullPointerException_at_call_entry= generate_throw_exception("NullPointerException at call throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_NullPointerException_at_call)); | |
| 0 | 2992 |
| 2993 //------------------------------------------------------------------------------------------------------------------------ | |
| 2994 // entry points that are platform specific | |
| 2995 | |
| 2996 // support for verify_oop (must happen after universe_init) | |
| 2997 StubRoutines::_verify_oop_subroutine_entry = generate_verify_oop(); | |
| 2998 | |
| 2999 // arraycopy stubs used by compilers | |
| 3000 generate_arraycopy_stubs(); | |
| 710 | 3001 |
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3002 generate_math_stubs(); |
| 6894 | 3003 |
| 3004 // don't bother generating these AES intrinsic stubs unless global flag is set | |
| 3005 if (UseAESIntrinsics) { | |
| 3006 StubRoutines::x86::_key_shuffle_mask_addr = generate_key_shuffle_mask(); // might be needed by the others | |
| 3007 | |
| 3008 StubRoutines::_aescrypt_encryptBlock = generate_aescrypt_encryptBlock(); | |
| 3009 StubRoutines::_aescrypt_decryptBlock = generate_aescrypt_decryptBlock(); | |
| 3010 StubRoutines::_cipherBlockChaining_encryptAESCrypt = generate_cipherBlockChaining_encryptAESCrypt(); | |
| 3011 StubRoutines::_cipherBlockChaining_decryptAESCrypt = generate_cipherBlockChaining_decryptAESCrypt(); | |
| 3012 } | |
| 11127 | 3013 |
| 3014 // Safefetch stubs. | |
| 3015 generate_safefetch("SafeFetch32", sizeof(int), &StubRoutines::_safefetch32_entry, | |
| 3016 &StubRoutines::_safefetch32_fault_pc, | |
| 3017 &StubRoutines::_safefetch32_continuation_pc); | |
| 3018 StubRoutines::_safefetchN_entry = StubRoutines::_safefetch32_entry; | |
| 3019 StubRoutines::_safefetchN_fault_pc = StubRoutines::_safefetch32_fault_pc; | |
| 3020 StubRoutines::_safefetchN_continuation_pc = StubRoutines::_safefetch32_continuation_pc; | |
| 0 | 3021 } |
| 3022 | |
| 3023 | |
| 3024 public: | |
| 3025 StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) { | |
| 3026 if (all) { | |
| 3027 generate_all(); | |
| 3028 } else { | |
| 3029 generate_initial(); | |
| 3030 } | |
| 3031 } | |
| 3032 }; // end class declaration | |
| 3033 | |
| 3034 | |
| 3035 void StubGenerator_generate(CodeBuffer* code, bool all) { | |
| 3036 StubGenerator g(code, all); | |
| 3037 } |