Mercurial > hg > truffle
annotate src/cpu/x86/vm/stubGenerator_x86_64.cpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | 1d7922586cf6 |
| children | d8ce2825b193 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2003, 2012, 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" |
| 26 #include "asm/assembler.hpp" | |
| 27 #include "assembler_x86.inline.hpp" | |
| 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" | |
| 40 #include "utilities/top.hpp" | |
| 41 #ifdef TARGET_OS_FAMILY_linux | |
| 42 # include "thread_linux.inline.hpp" | |
| 43 #endif | |
| 44 #ifdef TARGET_OS_FAMILY_solaris | |
| 45 # include "thread_solaris.inline.hpp" | |
| 46 #endif | |
| 47 #ifdef TARGET_OS_FAMILY_windows | |
| 48 # include "thread_windows.inline.hpp" | |
| 49 #endif | |
| 3960 | 50 #ifdef TARGET_OS_FAMILY_bsd |
| 51 # include "thread_bsd.inline.hpp" | |
| 52 #endif | |
| 1972 | 53 #ifdef COMPILER2 |
| 54 #include "opto/runtime.hpp" | |
| 55 #endif | |
| 0 | 56 |
| 57 // Declaration and definition of StubGenerator (no .hpp file). | |
| 58 // For a more detailed description of the stub routine structure | |
| 59 // see the comment in stubRoutines.hpp | |
| 60 | |
| 61 #define __ _masm-> | |
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62 #define TIMES_OOP (UseCompressedOops ? Address::times_4 : Address::times_8) |
| 304 | 63 #define a__ ((Assembler*)_masm)-> |
| 0 | 64 |
| 65 #ifdef PRODUCT | |
| 66 #define BLOCK_COMMENT(str) /* nothing */ | |
| 67 #else | |
| 68 #define BLOCK_COMMENT(str) __ block_comment(str) | |
| 69 #endif | |
| 70 | |
| 71 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") | |
| 72 const int MXCSR_MASK = 0xFFC0; // Mask out any pending exceptions | |
| 73 | |
| 74 // Stub Code definitions | |
| 75 | |
| 76 static address handle_unsafe_access() { | |
| 77 JavaThread* thread = JavaThread::current(); | |
| 78 address pc = thread->saved_exception_pc(); | |
| 79 // pc is the instruction which we must emulate | |
| 80 // doing a no-op is fine: return garbage from the load | |
| 81 // therefore, compute npc | |
| 82 address npc = Assembler::locate_next_instruction(pc); | |
| 83 | |
| 84 // request an async exception | |
| 85 thread->set_pending_unsafe_access_error(); | |
| 86 | |
| 87 // return address of next instruction to execute | |
| 88 return npc; | |
| 89 } | |
| 90 | |
| 91 class StubGenerator: public StubCodeGenerator { | |
| 92 private: | |
| 93 | |
| 94 #ifdef PRODUCT | |
| 95 #define inc_counter_np(counter) (0) | |
| 96 #else | |
| 97 void inc_counter_np_(int& counter) { | |
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98 // This can destroy rscratch1 if counter is far from the code cache |
| 0 | 99 __ incrementl(ExternalAddress((address)&counter)); |
| 100 } | |
| 101 #define inc_counter_np(counter) \ | |
| 102 BLOCK_COMMENT("inc_counter " #counter); \ | |
| 103 inc_counter_np_(counter); | |
| 104 #endif | |
| 105 | |
| 106 // Call stubs are used to call Java from C | |
| 107 // | |
| 108 // Linux Arguments: | |
| 109 // c_rarg0: call wrapper address address | |
| 110 // c_rarg1: result address | |
| 111 // c_rarg2: result type BasicType | |
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112 // c_rarg3: method Method* |
| 0 | 113 // c_rarg4: (interpreter) entry point address |
| 114 // c_rarg5: parameters intptr_t* | |
| 115 // 16(rbp): parameter size (in words) int | |
| 116 // 24(rbp): thread Thread* | |
| 117 // | |
| 118 // [ return_from_Java ] <--- rsp | |
| 119 // [ argument word n ] | |
| 120 // ... | |
| 121 // -12 [ argument word 1 ] | |
| 122 // -11 [ saved r15 ] <--- rsp_after_call | |
| 123 // -10 [ saved r14 ] | |
| 124 // -9 [ saved r13 ] | |
| 125 // -8 [ saved r12 ] | |
| 126 // -7 [ saved rbx ] | |
| 127 // -6 [ call wrapper ] | |
| 128 // -5 [ result ] | |
| 129 // -4 [ result type ] | |
| 130 // -3 [ method ] | |
| 131 // -2 [ entry point ] | |
| 132 // -1 [ parameters ] | |
| 133 // 0 [ saved rbp ] <--- rbp | |
| 134 // 1 [ return address ] | |
| 135 // 2 [ parameter size ] | |
| 136 // 3 [ thread ] | |
| 137 // | |
| 138 // Windows Arguments: | |
| 139 // c_rarg0: call wrapper address address | |
| 140 // c_rarg1: result address | |
| 141 // c_rarg2: result type BasicType | |
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142 // c_rarg3: method Method* |
| 0 | 143 // 48(rbp): (interpreter) entry point address |
| 144 // 56(rbp): parameters intptr_t* | |
| 145 // 64(rbp): parameter size (in words) int | |
| 146 // 72(rbp): thread Thread* | |
| 147 // | |
| 148 // [ return_from_Java ] <--- rsp | |
| 149 // [ argument word n ] | |
| 150 // ... | |
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151 // -28 [ argument word 1 ] |
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152 // -27 [ saved xmm15 ] <--- rsp_after_call |
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153 // [ saved xmm7-xmm14 ] |
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154 // -9 [ saved xmm6 ] (each xmm register takes 2 slots) |
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155 // -7 [ saved r15 ] |
| 0 | 156 // -6 [ saved r14 ] |
| 157 // -5 [ saved r13 ] | |
| 158 // -4 [ saved r12 ] | |
| 159 // -3 [ saved rdi ] | |
| 160 // -2 [ saved rsi ] | |
| 161 // -1 [ saved rbx ] | |
| 162 // 0 [ saved rbp ] <--- rbp | |
| 163 // 1 [ return address ] | |
| 164 // 2 [ call wrapper ] | |
| 165 // 3 [ result ] | |
| 166 // 4 [ result type ] | |
| 167 // 5 [ method ] | |
| 168 // 6 [ entry point ] | |
| 169 // 7 [ parameters ] | |
| 170 // 8 [ parameter size ] | |
| 171 // 9 [ thread ] | |
| 172 // | |
| 173 // Windows reserves the callers stack space for arguments 1-4. | |
| 174 // We spill c_rarg0-c_rarg3 to this space. | |
| 175 | |
| 176 // Call stub stack layout word offsets from rbp | |
| 177 enum call_stub_layout { | |
| 178 #ifdef _WIN64 | |
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179 xmm_save_first = 6, // save from xmm6 |
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180 xmm_save_last = 15, // to xmm15 |
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181 xmm_save_base = -9, |
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182 rsp_after_call_off = xmm_save_base - 2 * (xmm_save_last - xmm_save_first), // -27 |
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183 r15_off = -7, |
| 0 | 184 r14_off = -6, |
| 185 r13_off = -5, | |
| 186 r12_off = -4, | |
| 187 rdi_off = -3, | |
| 188 rsi_off = -2, | |
| 189 rbx_off = -1, | |
| 190 rbp_off = 0, | |
| 191 retaddr_off = 1, | |
| 192 call_wrapper_off = 2, | |
| 193 result_off = 3, | |
| 194 result_type_off = 4, | |
| 195 method_off = 5, | |
| 196 entry_point_off = 6, | |
| 197 parameters_off = 7, | |
| 198 parameter_size_off = 8, | |
| 199 thread_off = 9 | |
| 200 #else | |
| 201 rsp_after_call_off = -12, | |
| 202 mxcsr_off = rsp_after_call_off, | |
| 203 r15_off = -11, | |
| 204 r14_off = -10, | |
| 205 r13_off = -9, | |
| 206 r12_off = -8, | |
| 207 rbx_off = -7, | |
| 208 call_wrapper_off = -6, | |
| 209 result_off = -5, | |
| 210 result_type_off = -4, | |
| 211 method_off = -3, | |
| 212 entry_point_off = -2, | |
| 213 parameters_off = -1, | |
| 214 rbp_off = 0, | |
| 215 retaddr_off = 1, | |
| 216 parameter_size_off = 2, | |
| 217 thread_off = 3 | |
| 218 #endif | |
| 219 }; | |
| 220 | |
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221 #ifdef _WIN64 |
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222 Address xmm_save(int reg) { |
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223 assert(reg >= xmm_save_first && reg <= xmm_save_last, "XMM register number out of range"); |
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224 return Address(rbp, (xmm_save_base - (reg - xmm_save_first) * 2) * wordSize); |
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225 } |
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226 #endif |
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227 |
| 0 | 228 address generate_call_stub(address& return_address) { |
| 229 assert((int)frame::entry_frame_after_call_words == -(int)rsp_after_call_off + 1 && | |
| 230 (int)frame::entry_frame_call_wrapper_offset == (int)call_wrapper_off, | |
| 231 "adjust this code"); | |
| 232 StubCodeMark mark(this, "StubRoutines", "call_stub"); | |
| 233 address start = __ pc(); | |
| 234 | |
| 235 // same as in generate_catch_exception()! | |
| 236 const Address rsp_after_call(rbp, rsp_after_call_off * wordSize); | |
| 237 | |
| 238 const Address call_wrapper (rbp, call_wrapper_off * wordSize); | |
| 239 const Address result (rbp, result_off * wordSize); | |
| 240 const Address result_type (rbp, result_type_off * wordSize); | |
| 241 const Address method (rbp, method_off * wordSize); | |
| 242 const Address entry_point (rbp, entry_point_off * wordSize); | |
| 243 const Address parameters (rbp, parameters_off * wordSize); | |
| 244 const Address parameter_size(rbp, parameter_size_off * wordSize); | |
| 245 | |
| 246 // same as in generate_catch_exception()! | |
| 247 const Address thread (rbp, thread_off * wordSize); | |
| 248 | |
| 249 const Address r15_save(rbp, r15_off * wordSize); | |
| 250 const Address r14_save(rbp, r14_off * wordSize); | |
| 251 const Address r13_save(rbp, r13_off * wordSize); | |
| 252 const Address r12_save(rbp, r12_off * wordSize); | |
| 253 const Address rbx_save(rbp, rbx_off * wordSize); | |
| 254 | |
| 255 // stub code | |
| 256 __ enter(); | |
| 304 | 257 __ subptr(rsp, -rsp_after_call_off * wordSize); |
| 0 | 258 |
| 259 // save register parameters | |
| 260 #ifndef _WIN64 | |
| 304 | 261 __ movptr(parameters, c_rarg5); // parameters |
| 262 __ movptr(entry_point, c_rarg4); // entry_point | |
| 0 | 263 #endif |
| 264 | |
| 304 | 265 __ movptr(method, c_rarg3); // method |
| 266 __ movl(result_type, c_rarg2); // result type | |
| 267 __ movptr(result, c_rarg1); // result | |
| 268 __ movptr(call_wrapper, c_rarg0); // call wrapper | |
| 0 | 269 |
| 270 // save regs belonging to calling function | |
| 304 | 271 __ movptr(rbx_save, rbx); |
| 272 __ movptr(r12_save, r12); | |
| 273 __ movptr(r13_save, r13); | |
| 274 __ movptr(r14_save, r14); | |
| 275 __ movptr(r15_save, r15); | |
| 0 | 276 #ifdef _WIN64 |
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277 for (int i = 6; i <= 15; i++) { |
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278 __ movdqu(xmm_save(i), as_XMMRegister(i)); |
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279 } |
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280 |
| 0 | 281 const Address rdi_save(rbp, rdi_off * wordSize); |
| 282 const Address rsi_save(rbp, rsi_off * wordSize); | |
| 283 | |
| 304 | 284 __ movptr(rsi_save, rsi); |
| 285 __ movptr(rdi_save, rdi); | |
| 0 | 286 #else |
| 287 const Address mxcsr_save(rbp, mxcsr_off * wordSize); | |
| 288 { | |
| 289 Label skip_ldmx; | |
| 290 __ stmxcsr(mxcsr_save); | |
| 291 __ movl(rax, mxcsr_save); | |
| 292 __ andl(rax, MXCSR_MASK); // Only check control and mask bits | |
| 304 | 293 ExternalAddress mxcsr_std(StubRoutines::x86::mxcsr_std()); |
| 0 | 294 __ cmp32(rax, mxcsr_std); |
| 295 __ jcc(Assembler::equal, skip_ldmx); | |
| 296 __ ldmxcsr(mxcsr_std); | |
| 297 __ bind(skip_ldmx); | |
| 298 } | |
| 299 #endif | |
| 300 | |
| 301 // Load up thread register | |
| 304 | 302 __ movptr(r15_thread, thread); |
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303 __ reinit_heapbase(); |
| 0 | 304 |
| 305 #ifdef ASSERT | |
| 306 // make sure we have no pending exceptions | |
| 307 { | |
| 308 Label L; | |
| 304 | 309 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
| 0 | 310 __ jcc(Assembler::equal, L); |
| 311 __ stop("StubRoutines::call_stub: entered with pending exception"); | |
| 312 __ bind(L); | |
| 313 } | |
| 314 #endif | |
| 315 | |
| 316 // pass parameters if any | |
| 317 BLOCK_COMMENT("pass parameters if any"); | |
| 318 Label parameters_done; | |
| 319 __ movl(c_rarg3, parameter_size); | |
| 320 __ testl(c_rarg3, c_rarg3); | |
| 321 __ jcc(Assembler::zero, parameters_done); | |
| 322 | |
| 323 Label loop; | |
| 304 | 324 __ movptr(c_rarg2, parameters); // parameter pointer |
| 325 __ movl(c_rarg1, c_rarg3); // parameter counter is in c_rarg1 | |
| 0 | 326 __ BIND(loop); |
| 304 | 327 __ movptr(rax, Address(c_rarg2, 0));// get parameter |
| 328 __ addptr(c_rarg2, wordSize); // advance to next parameter | |
| 329 __ decrementl(c_rarg1); // decrement counter | |
| 330 __ push(rax); // pass parameter | |
| 0 | 331 __ jcc(Assembler::notZero, loop); |
| 332 | |
| 333 // call Java function | |
| 334 __ BIND(parameters_done); | |
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335 __ movptr(rbx, method); // get Method* |
| 304 | 336 __ movptr(c_rarg1, entry_point); // get entry_point |
| 337 __ mov(r13, rsp); // set sender sp | |
| 0 | 338 BLOCK_COMMENT("call Java function"); |
| 339 __ call(c_rarg1); | |
| 340 | |
| 341 BLOCK_COMMENT("call_stub_return_address:"); | |
| 342 return_address = __ pc(); | |
| 343 | |
| 344 // store result depending on type (everything that is not | |
| 345 // T_OBJECT, T_LONG, T_FLOAT or T_DOUBLE is treated as T_INT) | |
| 304 | 346 __ movptr(c_rarg0, result); |
| 0 | 347 Label is_long, is_float, is_double, exit; |
| 348 __ movl(c_rarg1, result_type); | |
| 349 __ cmpl(c_rarg1, T_OBJECT); | |
| 350 __ jcc(Assembler::equal, is_long); | |
| 351 __ cmpl(c_rarg1, T_LONG); | |
| 352 __ jcc(Assembler::equal, is_long); | |
| 353 __ cmpl(c_rarg1, T_FLOAT); | |
| 354 __ jcc(Assembler::equal, is_float); | |
| 355 __ cmpl(c_rarg1, T_DOUBLE); | |
| 356 __ jcc(Assembler::equal, is_double); | |
| 357 | |
| 358 // handle T_INT case | |
| 359 __ movl(Address(c_rarg0, 0), rax); | |
| 360 | |
| 361 __ BIND(exit); | |
| 362 | |
| 363 // pop parameters | |
| 304 | 364 __ lea(rsp, rsp_after_call); |
| 0 | 365 |
| 366 #ifdef ASSERT | |
| 367 // verify that threads correspond | |
| 368 { | |
| 369 Label L, S; | |
| 304 | 370 __ cmpptr(r15_thread, thread); |
| 0 | 371 __ jcc(Assembler::notEqual, S); |
| 372 __ get_thread(rbx); | |
| 304 | 373 __ cmpptr(r15_thread, rbx); |
| 0 | 374 __ jcc(Assembler::equal, L); |
| 375 __ bind(S); | |
| 376 __ jcc(Assembler::equal, L); | |
| 377 __ stop("StubRoutines::call_stub: threads must correspond"); | |
| 378 __ bind(L); | |
| 379 } | |
| 380 #endif | |
| 381 | |
| 382 // restore regs belonging to calling function | |
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383 #ifdef _WIN64 |
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384 for (int i = 15; i >= 6; i--) { |
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385 __ movdqu(as_XMMRegister(i), xmm_save(i)); |
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386 } |
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387 #endif |
| 304 | 388 __ movptr(r15, r15_save); |
| 389 __ movptr(r14, r14_save); | |
| 390 __ movptr(r13, r13_save); | |
| 391 __ movptr(r12, r12_save); | |
| 392 __ movptr(rbx, rbx_save); | |
| 0 | 393 |
| 394 #ifdef _WIN64 | |
| 304 | 395 __ movptr(rdi, rdi_save); |
| 396 __ movptr(rsi, rsi_save); | |
| 0 | 397 #else |
| 398 __ ldmxcsr(mxcsr_save); | |
| 399 #endif | |
| 400 | |
| 401 // restore rsp | |
| 304 | 402 __ addptr(rsp, -rsp_after_call_off * wordSize); |
| 0 | 403 |
| 404 // return | |
| 304 | 405 __ pop(rbp); |
| 0 | 406 __ ret(0); |
| 407 | |
| 408 // handle return types different from T_INT | |
| 409 __ BIND(is_long); | |
| 410 __ movq(Address(c_rarg0, 0), rax); | |
| 411 __ jmp(exit); | |
| 412 | |
| 413 __ BIND(is_float); | |
| 414 __ movflt(Address(c_rarg0, 0), xmm0); | |
| 415 __ jmp(exit); | |
| 416 | |
| 417 __ BIND(is_double); | |
| 418 __ movdbl(Address(c_rarg0, 0), xmm0); | |
| 419 __ jmp(exit); | |
| 420 | |
| 421 return start; | |
| 422 } | |
| 423 | |
| 424 // Return point for a Java call if there's an exception thrown in | |
| 425 // Java code. The exception is caught and transformed into a | |
| 426 // pending exception stored in JavaThread that can be tested from | |
| 427 // within the VM. | |
| 428 // | |
| 429 // Note: Usually the parameters are removed by the callee. In case | |
| 430 // of an exception crossing an activation frame boundary, that is | |
| 431 // not the case if the callee is compiled code => need to setup the | |
| 432 // rsp. | |
| 433 // | |
| 434 // rax: exception oop | |
| 435 | |
| 436 address generate_catch_exception() { | |
| 437 StubCodeMark mark(this, "StubRoutines", "catch_exception"); | |
| 438 address start = __ pc(); | |
| 439 | |
| 440 // same as in generate_call_stub(): | |
| 441 const Address rsp_after_call(rbp, rsp_after_call_off * wordSize); | |
| 442 const Address thread (rbp, thread_off * wordSize); | |
| 443 | |
| 444 #ifdef ASSERT | |
| 445 // verify that threads correspond | |
| 446 { | |
| 447 Label L, S; | |
| 304 | 448 __ cmpptr(r15_thread, thread); |
| 0 | 449 __ jcc(Assembler::notEqual, S); |
| 450 __ get_thread(rbx); | |
| 304 | 451 __ cmpptr(r15_thread, rbx); |
| 0 | 452 __ jcc(Assembler::equal, L); |
| 453 __ bind(S); | |
| 454 __ stop("StubRoutines::catch_exception: threads must correspond"); | |
| 455 __ bind(L); | |
| 456 } | |
| 457 #endif | |
| 458 | |
| 459 // set pending exception | |
| 460 __ verify_oop(rax); | |
| 461 | |
| 304 | 462 __ movptr(Address(r15_thread, Thread::pending_exception_offset()), rax); |
| 0 | 463 __ lea(rscratch1, ExternalAddress((address)__FILE__)); |
| 304 | 464 __ movptr(Address(r15_thread, Thread::exception_file_offset()), rscratch1); |
| 0 | 465 __ movl(Address(r15_thread, Thread::exception_line_offset()), (int) __LINE__); |
| 466 | |
| 467 // complete return to VM | |
| 468 assert(StubRoutines::_call_stub_return_address != NULL, | |
| 469 "_call_stub_return_address must have been generated before"); | |
| 470 __ jump(RuntimeAddress(StubRoutines::_call_stub_return_address)); | |
| 471 | |
| 472 return start; | |
| 473 } | |
| 474 | |
| 475 // Continuation point for runtime calls returning with a pending | |
| 476 // exception. The pending exception check happened in the runtime | |
| 477 // or native call stub. The pending exception in Thread is | |
| 478 // converted into a Java-level exception. | |
| 479 // | |
| 480 // Contract with Java-level exception handlers: | |
| 481 // rax: exception | |
| 482 // rdx: throwing pc | |
| 483 // | |
| 484 // NOTE: At entry of this stub, exception-pc must be on stack !! | |
| 485 | |
| 486 address generate_forward_exception() { | |
| 487 StubCodeMark mark(this, "StubRoutines", "forward exception"); | |
| 488 address start = __ pc(); | |
| 489 | |
| 490 // Upon entry, the sp points to the return address returning into | |
| 491 // Java (interpreted or compiled) code; i.e., the return address | |
| 492 // becomes the throwing pc. | |
| 493 // | |
| 494 // Arguments pushed before the runtime call are still on the stack | |
| 495 // but the exception handler will reset the stack pointer -> | |
| 496 // ignore them. A potential result in registers can be ignored as | |
| 497 // well. | |
| 498 | |
| 499 #ifdef ASSERT | |
| 500 // make sure this code is only executed if there is a pending exception | |
| 501 { | |
| 502 Label L; | |
| 304 | 503 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL); |
| 0 | 504 __ jcc(Assembler::notEqual, L); |
| 505 __ stop("StubRoutines::forward exception: no pending exception (1)"); | |
| 506 __ bind(L); | |
| 507 } | |
| 508 #endif | |
| 509 | |
| 510 // compute exception handler into rbx | |
| 304 | 511 __ movptr(c_rarg0, Address(rsp, 0)); |
| 0 | 512 BLOCK_COMMENT("call exception_handler_for_return_address"); |
| 513 __ call_VM_leaf(CAST_FROM_FN_PTR(address, | |
| 514 SharedRuntime::exception_handler_for_return_address), | |
| 1295 | 515 r15_thread, c_rarg0); |
| 304 | 516 __ mov(rbx, rax); |
| 0 | 517 |
| 518 // setup rax & rdx, remove return address & clear pending exception | |
| 304 | 519 __ pop(rdx); |
| 520 __ movptr(rax, Address(r15_thread, Thread::pending_exception_offset())); | |
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521 __ movptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
| 0 | 522 |
| 523 #ifdef ASSERT | |
| 524 // make sure exception is set | |
| 525 { | |
| 526 Label L; | |
| 304 | 527 __ testptr(rax, rax); |
| 0 | 528 __ jcc(Assembler::notEqual, L); |
| 529 __ stop("StubRoutines::forward exception: no pending exception (2)"); | |
| 530 __ bind(L); | |
| 531 } | |
| 532 #endif | |
| 533 | |
| 534 // continue at exception handler (return address removed) | |
| 535 // rax: exception | |
| 536 // rbx: exception handler | |
| 537 // rdx: throwing pc | |
| 538 __ verify_oop(rax); | |
| 539 __ jmp(rbx); | |
| 540 | |
| 541 return start; | |
| 542 } | |
| 543 | |
| 544 // Support for jint atomic::xchg(jint exchange_value, volatile jint* dest) | |
| 545 // | |
| 546 // Arguments : | |
| 547 // c_rarg0: exchange_value | |
| 548 // c_rarg0: dest | |
| 549 // | |
| 550 // Result: | |
| 551 // *dest <- ex, return (orig *dest) | |
| 552 address generate_atomic_xchg() { | |
| 553 StubCodeMark mark(this, "StubRoutines", "atomic_xchg"); | |
| 554 address start = __ pc(); | |
| 555 | |
| 556 __ movl(rax, c_rarg0); // Copy to eax we need a return value anyhow | |
| 557 __ xchgl(rax, Address(c_rarg1, 0)); // automatic LOCK | |
| 558 __ ret(0); | |
| 559 | |
| 560 return start; | |
| 561 } | |
| 562 | |
| 563 // Support for intptr_t atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) | |
| 564 // | |
| 565 // Arguments : | |
| 566 // c_rarg0: exchange_value | |
| 567 // c_rarg1: dest | |
| 568 // | |
| 569 // Result: | |
| 570 // *dest <- ex, return (orig *dest) | |
| 571 address generate_atomic_xchg_ptr() { | |
| 572 StubCodeMark mark(this, "StubRoutines", "atomic_xchg_ptr"); | |
| 573 address start = __ pc(); | |
| 574 | |
| 304 | 575 __ movptr(rax, c_rarg0); // Copy to eax we need a return value anyhow |
| 576 __ xchgptr(rax, Address(c_rarg1, 0)); // automatic LOCK | |
| 0 | 577 __ ret(0); |
| 578 | |
| 579 return start; | |
| 580 } | |
| 581 | |
| 582 // Support for jint atomic::atomic_cmpxchg(jint exchange_value, volatile jint* dest, | |
| 583 // jint compare_value) | |
| 584 // | |
| 585 // Arguments : | |
| 586 // c_rarg0: exchange_value | |
| 587 // c_rarg1: dest | |
| 588 // c_rarg2: compare_value | |
| 589 // | |
| 590 // Result: | |
| 591 // if ( compare_value == *dest ) { | |
| 592 // *dest = exchange_value | |
| 593 // return compare_value; | |
| 594 // else | |
| 595 // return *dest; | |
| 596 address generate_atomic_cmpxchg() { | |
| 597 StubCodeMark mark(this, "StubRoutines", "atomic_cmpxchg"); | |
| 598 address start = __ pc(); | |
| 599 | |
| 600 __ movl(rax, c_rarg2); | |
| 601 if ( os::is_MP() ) __ lock(); | |
| 602 __ cmpxchgl(c_rarg0, Address(c_rarg1, 0)); | |
| 603 __ ret(0); | |
| 604 | |
| 605 return start; | |
| 606 } | |
| 607 | |
| 608 // Support for jint atomic::atomic_cmpxchg_long(jlong exchange_value, | |
| 609 // volatile jlong* dest, | |
| 610 // jlong compare_value) | |
| 611 // Arguments : | |
| 612 // c_rarg0: exchange_value | |
| 613 // c_rarg1: dest | |
| 614 // c_rarg2: compare_value | |
| 615 // | |
| 616 // Result: | |
| 617 // if ( compare_value == *dest ) { | |
| 618 // *dest = exchange_value | |
| 619 // return compare_value; | |
| 620 // else | |
| 621 // return *dest; | |
| 622 address generate_atomic_cmpxchg_long() { | |
| 623 StubCodeMark mark(this, "StubRoutines", "atomic_cmpxchg_long"); | |
| 624 address start = __ pc(); | |
| 625 | |
| 626 __ movq(rax, c_rarg2); | |
| 627 if ( os::is_MP() ) __ lock(); | |
| 628 __ cmpxchgq(c_rarg0, Address(c_rarg1, 0)); | |
| 629 __ ret(0); | |
| 630 | |
| 631 return start; | |
| 632 } | |
| 633 | |
| 634 // Support for jint atomic::add(jint add_value, volatile jint* dest) | |
| 635 // | |
| 636 // Arguments : | |
| 637 // c_rarg0: add_value | |
| 638 // c_rarg1: dest | |
| 639 // | |
| 640 // Result: | |
| 641 // *dest += add_value | |
| 642 // return *dest; | |
| 643 address generate_atomic_add() { | |
| 644 StubCodeMark mark(this, "StubRoutines", "atomic_add"); | |
| 645 address start = __ pc(); | |
| 646 | |
| 647 __ movl(rax, c_rarg0); | |
| 648 if ( os::is_MP() ) __ lock(); | |
| 649 __ xaddl(Address(c_rarg1, 0), c_rarg0); | |
| 650 __ addl(rax, c_rarg0); | |
| 651 __ ret(0); | |
| 652 | |
| 653 return start; | |
| 654 } | |
| 655 | |
| 656 // Support for intptr_t atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) | |
| 657 // | |
| 658 // Arguments : | |
| 659 // c_rarg0: add_value | |
| 660 // c_rarg1: dest | |
| 661 // | |
| 662 // Result: | |
| 663 // *dest += add_value | |
| 664 // return *dest; | |
| 665 address generate_atomic_add_ptr() { | |
| 666 StubCodeMark mark(this, "StubRoutines", "atomic_add_ptr"); | |
| 667 address start = __ pc(); | |
| 668 | |
| 304 | 669 __ movptr(rax, c_rarg0); // Copy to eax we need a return value anyhow |
| 0 | 670 if ( os::is_MP() ) __ lock(); |
| 304 | 671 __ xaddptr(Address(c_rarg1, 0), c_rarg0); |
| 672 __ addptr(rax, c_rarg0); | |
| 0 | 673 __ ret(0); |
| 674 | |
| 675 return start; | |
| 676 } | |
| 677 | |
| 678 // Support for intptr_t OrderAccess::fence() | |
| 679 // | |
| 680 // Arguments : | |
| 681 // | |
| 682 // Result: | |
| 683 address generate_orderaccess_fence() { | |
| 684 StubCodeMark mark(this, "StubRoutines", "orderaccess_fence"); | |
| 685 address start = __ pc(); | |
|
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686 __ membar(Assembler::StoreLoad); |
| 0 | 687 __ ret(0); |
| 688 | |
| 689 return start; | |
| 690 } | |
| 691 | |
| 692 // Support for intptr_t get_previous_fp() | |
| 693 // | |
| 694 // This routine is used to find the previous frame pointer for the | |
| 695 // caller (current_frame_guess). This is used as part of debugging | |
| 696 // ps() is seemingly lost trying to find frames. | |
| 697 // This code assumes that caller current_frame_guess) has a frame. | |
| 698 address generate_get_previous_fp() { | |
| 699 StubCodeMark mark(this, "StubRoutines", "get_previous_fp"); | |
| 700 const Address old_fp(rbp, 0); | |
| 701 const Address older_fp(rax, 0); | |
| 702 address start = __ pc(); | |
| 703 | |
| 704 __ enter(); | |
| 304 | 705 __ movptr(rax, old_fp); // callers fp |
| 706 __ movptr(rax, older_fp); // the frame for ps() | |
| 707 __ pop(rbp); | |
| 0 | 708 __ ret(0); |
| 709 | |
| 710 return start; | |
| 711 } | |
| 712 | |
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713 // Support for intptr_t get_previous_sp() |
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714 // |
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715 // This routine is used to find the previous stack pointer for the |
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716 // caller. |
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717 address generate_get_previous_sp() { |
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718 StubCodeMark mark(this, "StubRoutines", "get_previous_sp"); |
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719 address start = __ pc(); |
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720 |
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721 __ movptr(rax, rsp); |
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722 __ addptr(rax, 8); // return address is at the top of the stack. |
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723 __ ret(0); |
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724 |
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725 return start; |
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726 } |
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727 |
| 0 | 728 //---------------------------------------------------------------------------------------------------- |
| 729 // Support for void verify_mxcsr() | |
| 730 // | |
| 731 // This routine is used with -Xcheck:jni to verify that native | |
| 732 // JNI code does not return to Java code without restoring the | |
| 733 // MXCSR register to our expected state. | |
| 734 | |
| 735 address generate_verify_mxcsr() { | |
| 736 StubCodeMark mark(this, "StubRoutines", "verify_mxcsr"); | |
| 737 address start = __ pc(); | |
| 738 | |
| 739 const Address mxcsr_save(rsp, 0); | |
| 740 | |
| 741 if (CheckJNICalls) { | |
| 742 Label ok_ret; | |
| 304 | 743 __ push(rax); |
| 744 __ subptr(rsp, wordSize); // allocate a temp location | |
| 0 | 745 __ stmxcsr(mxcsr_save); |
| 746 __ movl(rax, mxcsr_save); | |
| 747 __ andl(rax, MXCSR_MASK); // Only check control and mask bits | |
| 304 | 748 __ cmpl(rax, *(int *)(StubRoutines::x86::mxcsr_std())); |
| 0 | 749 __ jcc(Assembler::equal, ok_ret); |
| 750 | |
| 751 __ warn("MXCSR changed by native JNI code, use -XX:+RestoreMXCSROnJNICall"); | |
| 752 | |
| 304 | 753 __ ldmxcsr(ExternalAddress(StubRoutines::x86::mxcsr_std())); |
| 0 | 754 |
| 755 __ bind(ok_ret); | |
| 304 | 756 __ addptr(rsp, wordSize); |
| 757 __ pop(rax); | |
| 0 | 758 } |
| 759 | |
| 760 __ ret(0); | |
| 761 | |
| 762 return start; | |
| 763 } | |
| 764 | |
| 765 address generate_f2i_fixup() { | |
| 766 StubCodeMark mark(this, "StubRoutines", "f2i_fixup"); | |
| 767 Address inout(rsp, 5 * wordSize); // return address + 4 saves | |
| 768 | |
| 769 address start = __ pc(); | |
| 770 | |
| 771 Label L; | |
| 772 | |
| 304 | 773 __ push(rax); |
| 774 __ push(c_rarg3); | |
| 775 __ push(c_rarg2); | |
| 776 __ push(c_rarg1); | |
| 0 | 777 |
| 778 __ movl(rax, 0x7f800000); | |
| 779 __ xorl(c_rarg3, c_rarg3); | |
| 780 __ movl(c_rarg2, inout); | |
| 781 __ movl(c_rarg1, c_rarg2); | |
| 782 __ andl(c_rarg1, 0x7fffffff); | |
| 783 __ cmpl(rax, c_rarg1); // NaN? -> 0 | |
| 784 __ jcc(Assembler::negative, L); | |
| 785 __ testl(c_rarg2, c_rarg2); // signed ? min_jint : max_jint | |
| 786 __ movl(c_rarg3, 0x80000000); | |
| 787 __ movl(rax, 0x7fffffff); | |
| 788 __ cmovl(Assembler::positive, c_rarg3, rax); | |
| 789 | |
| 790 __ bind(L); | |
| 304 | 791 __ movptr(inout, c_rarg3); |
| 792 | |
| 793 __ pop(c_rarg1); | |
| 794 __ pop(c_rarg2); | |
| 795 __ pop(c_rarg3); | |
| 796 __ pop(rax); | |
| 0 | 797 |
| 798 __ ret(0); | |
| 799 | |
| 800 return start; | |
| 801 } | |
| 802 | |
| 803 address generate_f2l_fixup() { | |
| 804 StubCodeMark mark(this, "StubRoutines", "f2l_fixup"); | |
| 805 Address inout(rsp, 5 * wordSize); // return address + 4 saves | |
| 806 address start = __ pc(); | |
| 807 | |
| 808 Label L; | |
| 809 | |
| 304 | 810 __ push(rax); |
| 811 __ push(c_rarg3); | |
| 812 __ push(c_rarg2); | |
| 813 __ push(c_rarg1); | |
| 0 | 814 |
| 815 __ movl(rax, 0x7f800000); | |
| 816 __ xorl(c_rarg3, c_rarg3); | |
| 817 __ movl(c_rarg2, inout); | |
| 818 __ movl(c_rarg1, c_rarg2); | |
| 819 __ andl(c_rarg1, 0x7fffffff); | |
| 820 __ cmpl(rax, c_rarg1); // NaN? -> 0 | |
| 821 __ jcc(Assembler::negative, L); | |
| 822 __ testl(c_rarg2, c_rarg2); // signed ? min_jlong : max_jlong | |
| 823 __ mov64(c_rarg3, 0x8000000000000000); | |
| 824 __ mov64(rax, 0x7fffffffffffffff); | |
| 304 | 825 __ cmov(Assembler::positive, c_rarg3, rax); |
| 0 | 826 |
| 827 __ bind(L); | |
| 304 | 828 __ movptr(inout, c_rarg3); |
| 829 | |
| 830 __ pop(c_rarg1); | |
| 831 __ pop(c_rarg2); | |
| 832 __ pop(c_rarg3); | |
| 833 __ pop(rax); | |
| 0 | 834 |
| 835 __ ret(0); | |
| 836 | |
| 837 return start; | |
| 838 } | |
| 839 | |
| 840 address generate_d2i_fixup() { | |
| 841 StubCodeMark mark(this, "StubRoutines", "d2i_fixup"); | |
| 842 Address inout(rsp, 6 * wordSize); // return address + 5 saves | |
| 843 | |
| 844 address start = __ pc(); | |
| 845 | |
| 846 Label L; | |
| 847 | |
| 304 | 848 __ push(rax); |
| 849 __ push(c_rarg3); | |
| 850 __ push(c_rarg2); | |
| 851 __ push(c_rarg1); | |
| 852 __ push(c_rarg0); | |
| 0 | 853 |
| 854 __ movl(rax, 0x7ff00000); | |
| 855 __ movq(c_rarg2, inout); | |
| 856 __ movl(c_rarg3, c_rarg2); | |
| 304 | 857 __ mov(c_rarg1, c_rarg2); |
| 858 __ mov(c_rarg0, c_rarg2); | |
| 0 | 859 __ negl(c_rarg3); |
| 304 | 860 __ shrptr(c_rarg1, 0x20); |
| 0 | 861 __ orl(c_rarg3, c_rarg2); |
| 862 __ andl(c_rarg1, 0x7fffffff); | |
| 863 __ xorl(c_rarg2, c_rarg2); | |
| 864 __ shrl(c_rarg3, 0x1f); | |
| 865 __ orl(c_rarg1, c_rarg3); | |
| 866 __ cmpl(rax, c_rarg1); | |
| 867 __ jcc(Assembler::negative, L); // NaN -> 0 | |
| 304 | 868 __ testptr(c_rarg0, c_rarg0); // signed ? min_jint : max_jint |
| 0 | 869 __ movl(c_rarg2, 0x80000000); |
| 870 __ movl(rax, 0x7fffffff); | |
| 304 | 871 __ cmov(Assembler::positive, c_rarg2, rax); |
| 0 | 872 |
| 873 __ bind(L); | |
| 304 | 874 __ movptr(inout, c_rarg2); |
| 875 | |
| 876 __ pop(c_rarg0); | |
| 877 __ pop(c_rarg1); | |
| 878 __ pop(c_rarg2); | |
| 879 __ pop(c_rarg3); | |
| 880 __ pop(rax); | |
| 0 | 881 |
| 882 __ ret(0); | |
| 883 | |
| 884 return start; | |
| 885 } | |
| 886 | |
| 887 address generate_d2l_fixup() { | |
| 888 StubCodeMark mark(this, "StubRoutines", "d2l_fixup"); | |
| 889 Address inout(rsp, 6 * wordSize); // return address + 5 saves | |
| 890 | |
| 891 address start = __ pc(); | |
| 892 | |
| 893 Label L; | |
| 894 | |
| 304 | 895 __ push(rax); |
| 896 __ push(c_rarg3); | |
| 897 __ push(c_rarg2); | |
| 898 __ push(c_rarg1); | |
| 899 __ push(c_rarg0); | |
| 0 | 900 |
| 901 __ movl(rax, 0x7ff00000); | |
| 902 __ movq(c_rarg2, inout); | |
| 903 __ movl(c_rarg3, c_rarg2); | |
| 304 | 904 __ mov(c_rarg1, c_rarg2); |
| 905 __ mov(c_rarg0, c_rarg2); | |
| 0 | 906 __ negl(c_rarg3); |
| 304 | 907 __ shrptr(c_rarg1, 0x20); |
| 0 | 908 __ orl(c_rarg3, c_rarg2); |
| 909 __ andl(c_rarg1, 0x7fffffff); | |
| 910 __ xorl(c_rarg2, c_rarg2); | |
| 911 __ shrl(c_rarg3, 0x1f); | |
| 912 __ orl(c_rarg1, c_rarg3); | |
| 913 __ cmpl(rax, c_rarg1); | |
| 914 __ jcc(Assembler::negative, L); // NaN -> 0 | |
| 915 __ testq(c_rarg0, c_rarg0); // signed ? min_jlong : max_jlong | |
| 916 __ mov64(c_rarg2, 0x8000000000000000); | |
| 917 __ mov64(rax, 0x7fffffffffffffff); | |
| 918 __ cmovq(Assembler::positive, c_rarg2, rax); | |
| 919 | |
| 920 __ bind(L); | |
| 921 __ movq(inout, c_rarg2); | |
| 922 | |
| 304 | 923 __ pop(c_rarg0); |
| 924 __ pop(c_rarg1); | |
| 925 __ pop(c_rarg2); | |
| 926 __ pop(c_rarg3); | |
| 927 __ pop(rax); | |
| 0 | 928 |
| 929 __ ret(0); | |
| 930 | |
| 931 return start; | |
| 932 } | |
| 933 | |
| 934 address generate_fp_mask(const char *stub_name, int64_t mask) { | |
| 1365 | 935 __ align(CodeEntryAlignment); |
| 0 | 936 StubCodeMark mark(this, "StubRoutines", stub_name); |
| 937 address start = __ pc(); | |
| 938 | |
| 939 __ emit_data64( mask, relocInfo::none ); | |
| 940 __ emit_data64( mask, relocInfo::none ); | |
| 941 | |
| 942 return start; | |
| 943 } | |
| 944 | |
| 945 // The following routine generates a subroutine to throw an | |
| 946 // asynchronous UnknownError when an unsafe access gets a fault that | |
| 947 // could not be reasonably prevented by the programmer. (Example: | |
| 948 // SIGBUS/OBJERR.) | |
| 949 address generate_handler_for_unsafe_access() { | |
| 950 StubCodeMark mark(this, "StubRoutines", "handler_for_unsafe_access"); | |
| 951 address start = __ pc(); | |
| 952 | |
| 304 | 953 __ push(0); // hole for return address-to-be |
| 954 __ pusha(); // push registers | |
| 0 | 955 Address next_pc(rsp, RegisterImpl::number_of_registers * BytesPerWord); |
| 956 | |
| 3937 | 957 // FIXME: this probably needs alignment logic |
| 958 | |
| 304 | 959 __ subptr(rsp, frame::arg_reg_save_area_bytes); |
| 0 | 960 BLOCK_COMMENT("call handle_unsafe_access"); |
| 961 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, handle_unsafe_access))); | |
| 304 | 962 __ addptr(rsp, frame::arg_reg_save_area_bytes); |
| 963 | |
| 964 __ movptr(next_pc, rax); // stuff next address | |
| 965 __ popa(); | |
| 0 | 966 __ ret(0); // jump to next address |
| 967 | |
| 968 return start; | |
| 969 } | |
| 970 | |
| 971 // Non-destructive plausibility checks for oops | |
| 972 // | |
| 973 // Arguments: | |
| 974 // all args on stack! | |
| 975 // | |
| 976 // Stack after saving c_rarg3: | |
| 977 // [tos + 0]: saved c_rarg3 | |
| 978 // [tos + 1]: saved c_rarg2 | |
|
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979 // [tos + 2]: saved r12 (several TemplateTable methods use it) |
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980 // [tos + 3]: saved flags |
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981 // [tos + 4]: return address |
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982 // * [tos + 5]: error message (char*) |
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983 // * [tos + 6]: object to verify (oop) |
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984 // * [tos + 7]: saved rax - saved by caller and bashed |
| 1583 | 985 // * [tos + 8]: saved r10 (rscratch1) - saved by caller |
| 0 | 986 // * = popped on exit |
| 987 address generate_verify_oop() { | |
| 988 StubCodeMark mark(this, "StubRoutines", "verify_oop"); | |
| 989 address start = __ pc(); | |
| 990 | |
| 991 Label exit, error; | |
| 992 | |
| 304 | 993 __ pushf(); |
| 0 | 994 __ incrementl(ExternalAddress((address) StubRoutines::verify_oop_count_addr())); |
| 995 | |
| 304 | 996 __ push(r12); |
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997 |
| 0 | 998 // save c_rarg2 and c_rarg3 |
| 304 | 999 __ push(c_rarg2); |
| 1000 __ push(c_rarg3); | |
| 0 | 1001 |
|
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1002 enum { |
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1003 // After previous pushes. |
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1004 oop_to_verify = 6 * wordSize, |
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1005 saved_rax = 7 * wordSize, |
| 1583 | 1006 saved_r10 = 8 * wordSize, |
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1007 |
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1008 // Before the call to MacroAssembler::debug(), see below. |
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1009 return_addr = 16 * wordSize, |
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1010 error_msg = 17 * wordSize |
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1011 }; |
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1012 |
| 0 | 1013 // get object |
| 304 | 1014 __ movptr(rax, Address(rsp, oop_to_verify)); |
| 0 | 1015 |
| 1016 // make sure object is 'reasonable' | |
| 304 | 1017 __ testptr(rax, rax); |
| 0 | 1018 __ jcc(Assembler::zero, exit); // if obj is NULL it is OK |
| 1019 // Check if the oop is in the right area of memory | |
| 304 | 1020 __ movptr(c_rarg2, rax); |
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1021 __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_mask()); |
| 304 | 1022 __ andptr(c_rarg2, c_rarg3); |
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1023 __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_bits()); |
| 304 | 1024 __ cmpptr(c_rarg2, c_rarg3); |
| 0 | 1025 __ jcc(Assembler::notZero, error); |
| 1026 | |
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1027 // set r12 to heapbase for load_klass() |
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1028 __ reinit_heapbase(); |
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1029 |
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1030 // make sure klass is 'reasonable', which is not zero. |
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1031 __ load_klass(rax, rax); // get klass |
| 304 | 1032 __ testptr(rax, rax); |
| 0 | 1033 __ jcc(Assembler::zero, error); // if klass is NULL it is broken |
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1034 // TODO: Future assert that klass is lower 4g memory for UseCompressedKlassPointers |
| 0 | 1035 |
| 1036 // return if everything seems ok | |
| 1037 __ bind(exit); | |
| 304 | 1038 __ movptr(rax, Address(rsp, saved_rax)); // get saved rax back |
| 1583 | 1039 __ movptr(rscratch1, Address(rsp, saved_r10)); // get saved r10 back |
| 304 | 1040 __ pop(c_rarg3); // restore c_rarg3 |
| 1041 __ pop(c_rarg2); // restore c_rarg2 | |
| 1042 __ pop(r12); // restore r12 | |
| 1043 __ popf(); // restore flags | |
| 1583 | 1044 __ ret(4 * wordSize); // pop caller saved stuff |
| 0 | 1045 |
| 1046 // handle errors | |
| 1047 __ bind(error); | |
| 304 | 1048 __ movptr(rax, Address(rsp, saved_rax)); // get saved rax back |
| 1583 | 1049 __ movptr(rscratch1, Address(rsp, saved_r10)); // get saved r10 back |
| 304 | 1050 __ pop(c_rarg3); // get saved c_rarg3 back |
| 1051 __ pop(c_rarg2); // get saved c_rarg2 back | |
| 1052 __ pop(r12); // get saved r12 back | |
| 1053 __ popf(); // get saved flags off stack -- | |
| 0 | 1054 // will be ignored |
| 1055 | |
| 304 | 1056 __ pusha(); // push registers |
| 0 | 1057 // (rip is already |
| 1058 // already pushed) | |
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1059 // debug(char* msg, int64_t pc, int64_t regs[]) |
| 0 | 1060 // We've popped the registers we'd saved (c_rarg3, c_rarg2 and flags), and |
| 1061 // pushed all the registers, so now the stack looks like: | |
| 1062 // [tos + 0] 16 saved registers | |
| 1063 // [tos + 16] return address | |
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1064 // * [tos + 17] error message (char*) |
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1065 // * [tos + 18] object to verify (oop) |
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1066 // * [tos + 19] saved rax - saved by caller and bashed |
| 1583 | 1067 // * [tos + 20] saved r10 (rscratch1) - saved by caller |
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1068 // * = popped on exit |
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1069 |
| 304 | 1070 __ movptr(c_rarg0, Address(rsp, error_msg)); // pass address of error message |
| 1071 __ movptr(c_rarg1, Address(rsp, return_addr)); // pass return address | |
| 1072 __ movq(c_rarg2, rsp); // pass address of regs on stack | |
| 1073 __ mov(r12, rsp); // remember rsp | |
| 1074 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows | |
| 1075 __ andptr(rsp, -16); // align stack as required by ABI | |
| 0 | 1076 BLOCK_COMMENT("call MacroAssembler::debug"); |
| 304 | 1077 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, MacroAssembler::debug64))); |
| 1078 __ mov(rsp, r12); // restore rsp | |
| 1079 __ popa(); // pop registers (includes r12) | |
| 1583 | 1080 __ ret(4 * wordSize); // pop caller saved stuff |
| 0 | 1081 |
| 1082 return start; | |
| 1083 } | |
| 1084 | |
| 1085 // | |
| 1086 // Verify that a register contains clean 32-bits positive value | |
| 1087 // (high 32-bits are 0) so it could be used in 64-bits shifts. | |
| 1088 // | |
| 1089 // Input: | |
| 1090 // Rint - 32-bits value | |
| 1091 // Rtmp - scratch | |
| 1092 // | |
| 1093 void assert_clean_int(Register Rint, Register Rtmp) { | |
| 1094 #ifdef ASSERT | |
| 1095 Label L; | |
| 1096 assert_different_registers(Rtmp, Rint); | |
| 1097 __ movslq(Rtmp, Rint); | |
| 1098 __ cmpq(Rtmp, Rint); | |
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1099 __ jcc(Assembler::equal, L); |
| 0 | 1100 __ stop("high 32-bits of int value are not 0"); |
| 1101 __ bind(L); | |
| 1102 #endif | |
| 1103 } | |
| 1104 | |
| 1105 // Generate overlap test for array copy stubs | |
| 1106 // | |
| 1107 // Input: | |
| 1108 // c_rarg0 - from | |
| 1109 // c_rarg1 - to | |
| 1110 // c_rarg2 - element count | |
| 1111 // | |
| 1112 // Output: | |
| 1113 // rax - &from[element count - 1] | |
| 1114 // | |
| 1115 void array_overlap_test(address no_overlap_target, Address::ScaleFactor sf) { | |
| 1116 assert(no_overlap_target != NULL, "must be generated"); | |
| 1117 array_overlap_test(no_overlap_target, NULL, sf); | |
| 1118 } | |
| 1119 void array_overlap_test(Label& L_no_overlap, Address::ScaleFactor sf) { | |
| 1120 array_overlap_test(NULL, &L_no_overlap, sf); | |
| 1121 } | |
| 1122 void array_overlap_test(address no_overlap_target, Label* NOLp, Address::ScaleFactor sf) { | |
| 1123 const Register from = c_rarg0; | |
| 1124 const Register to = c_rarg1; | |
| 1125 const Register count = c_rarg2; | |
| 1126 const Register end_from = rax; | |
| 1127 | |
| 304 | 1128 __ cmpptr(to, from); |
| 1129 __ lea(end_from, Address(from, count, sf, 0)); | |
| 0 | 1130 if (NOLp == NULL) { |
| 1131 ExternalAddress no_overlap(no_overlap_target); | |
| 1132 __ jump_cc(Assembler::belowEqual, no_overlap); | |
| 304 | 1133 __ cmpptr(to, end_from); |
| 0 | 1134 __ jump_cc(Assembler::aboveEqual, no_overlap); |
| 1135 } else { | |
| 1136 __ jcc(Assembler::belowEqual, (*NOLp)); | |
| 304 | 1137 __ cmpptr(to, end_from); |
| 0 | 1138 __ jcc(Assembler::aboveEqual, (*NOLp)); |
| 1139 } | |
| 1140 } | |
| 1141 | |
| 1142 // Shuffle first three arg regs on Windows into Linux/Solaris locations. | |
| 1143 // | |
| 1144 // Outputs: | |
| 1145 // rdi - rcx | |
| 1146 // rsi - rdx | |
| 1147 // rdx - r8 | |
| 1148 // rcx - r9 | |
| 1149 // | |
| 1150 // Registers r9 and r10 are used to save rdi and rsi on Windows, which latter | |
| 1151 // are non-volatile. r9 and r10 should not be used by the caller. | |
| 1152 // | |
| 1153 void setup_arg_regs(int nargs = 3) { | |
| 1154 const Register saved_rdi = r9; | |
| 1155 const Register saved_rsi = r10; | |
| 1156 assert(nargs == 3 || nargs == 4, "else fix"); | |
| 1157 #ifdef _WIN64 | |
| 1158 assert(c_rarg0 == rcx && c_rarg1 == rdx && c_rarg2 == r8 && c_rarg3 == r9, | |
| 1159 "unexpected argument registers"); | |
| 1160 if (nargs >= 4) | |
| 304 | 1161 __ mov(rax, r9); // r9 is also saved_rdi |
| 1162 __ movptr(saved_rdi, rdi); | |
| 1163 __ movptr(saved_rsi, rsi); | |
| 1164 __ mov(rdi, rcx); // c_rarg0 | |
| 1165 __ mov(rsi, rdx); // c_rarg1 | |
| 1166 __ mov(rdx, r8); // c_rarg2 | |
| 0 | 1167 if (nargs >= 4) |
| 304 | 1168 __ mov(rcx, rax); // c_rarg3 (via rax) |
| 0 | 1169 #else |
| 1170 assert(c_rarg0 == rdi && c_rarg1 == rsi && c_rarg2 == rdx && c_rarg3 == rcx, | |
| 1171 "unexpected argument registers"); | |
| 1172 #endif | |
| 1173 } | |
| 1174 | |
| 1175 void restore_arg_regs() { | |
| 1176 const Register saved_rdi = r9; | |
| 1177 const Register saved_rsi = r10; | |
| 1178 #ifdef _WIN64 | |
| 304 | 1179 __ movptr(rdi, saved_rdi); |
| 1180 __ movptr(rsi, saved_rsi); | |
| 0 | 1181 #endif |
| 1182 } | |
| 1183 | |
| 1184 // Generate code for an array write pre barrier | |
| 1185 // | |
| 1186 // addr - starting address | |
| 2324 | 1187 // count - element count |
| 1188 // tmp - scratch register | |
| 0 | 1189 // |
| 1190 // Destroy no registers! | |
| 1191 // | |
| 2324 | 1192 void gen_write_ref_array_pre_barrier(Register addr, Register count, bool dest_uninitialized) { |
| 0 | 1193 BarrierSet* bs = Universe::heap()->barrier_set(); |
| 1194 switch (bs->kind()) { | |
| 1195 case BarrierSet::G1SATBCT: | |
| 1196 case BarrierSet::G1SATBCTLogging: | |
| 2324 | 1197 // With G1, don't generate the call if we statically know that the target in uninitialized |
| 1198 if (!dest_uninitialized) { | |
| 1199 __ pusha(); // push registers | |
| 1200 if (count == c_rarg0) { | |
| 1201 if (addr == c_rarg1) { | |
| 1202 // exactly backwards!! | |
| 1203 __ xchgptr(c_rarg1, c_rarg0); | |
| 1204 } else { | |
| 1205 __ movptr(c_rarg1, count); | |
| 1206 __ movptr(c_rarg0, addr); | |
| 1207 } | |
| 1208 } else { | |
| 1209 __ movptr(c_rarg0, addr); | |
| 1210 __ movptr(c_rarg1, count); | |
| 1211 } | |
| 1212 __ call_VM_leaf(CAST_FROM_FN_PTR(address, BarrierSet::static_write_ref_array_pre), 2); | |
| 1213 __ popa(); | |
| 0 | 1214 } |
| 2324 | 1215 break; |
| 0 | 1216 case BarrierSet::CardTableModRef: |
| 1217 case BarrierSet::CardTableExtension: | |
| 1218 case BarrierSet::ModRef: | |
| 1219 break; | |
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1220 default: |
| 0 | 1221 ShouldNotReachHere(); |
| 1222 | |
| 1223 } | |
| 1224 } | |
| 1225 | |
| 1226 // | |
| 1227 // Generate code for an array write post barrier | |
| 1228 // | |
| 1229 // Input: | |
| 1230 // start - register containing starting address of destination array | |
| 1231 // end - register containing ending address of destination array | |
| 1232 // scratch - scratch register | |
| 1233 // | |
| 1234 // The input registers are overwritten. | |
| 1235 // The ending address is inclusive. | |
| 1236 void gen_write_ref_array_post_barrier(Register start, Register end, Register scratch) { | |
| 1237 assert_different_registers(start, end, scratch); | |
| 1238 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 1239 switch (bs->kind()) { | |
| 1240 case BarrierSet::G1SATBCT: | |
| 1241 case BarrierSet::G1SATBCTLogging: | |
| 1242 | |
| 1243 { | |
| 304 | 1244 __ pusha(); // push registers (overkill) |
| 0 | 1245 // must compute element count unless barrier set interface is changed (other platforms supply count) |
| 1246 assert_different_registers(start, end, scratch); | |
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1247 __ lea(scratch, Address(end, BytesPerHeapOop)); |
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1248 __ subptr(scratch, start); // subtract start to get #bytes |
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1249 __ shrptr(scratch, LogBytesPerHeapOop); // convert to element count |
| 304 | 1250 __ mov(c_rarg0, start); |
| 1251 __ mov(c_rarg1, scratch); | |
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1252 __ call_VM_leaf(CAST_FROM_FN_PTR(address, BarrierSet::static_write_ref_array_post), 2); |
| 304 | 1253 __ popa(); |
| 0 | 1254 } |
| 1255 break; | |
| 1256 case BarrierSet::CardTableModRef: | |
| 1257 case BarrierSet::CardTableExtension: | |
| 1258 { | |
| 1259 CardTableModRefBS* ct = (CardTableModRefBS*)bs; | |
| 1260 assert(sizeof(*ct->byte_map_base) == sizeof(jbyte), "adjust this code"); | |
| 1261 | |
| 1262 Label L_loop; | |
| 1263 | |
| 304 | 1264 __ shrptr(start, CardTableModRefBS::card_shift); |
|
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1265 __ addptr(end, BytesPerHeapOop); |
| 304 | 1266 __ shrptr(end, CardTableModRefBS::card_shift); |
| 1267 __ subptr(end, start); // number of bytes to copy | |
| 0 | 1268 |
|
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1269 intptr_t disp = (intptr_t) ct->byte_map_base; |
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1270 if (Assembler::is_simm32(disp)) { |
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1271 Address cardtable(noreg, noreg, Address::no_scale, disp); |
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1272 __ lea(scratch, cardtable); |
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1273 } else { |
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1274 ExternalAddress cardtable((address)disp); |
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1275 __ lea(scratch, cardtable); |
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1276 } |
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1277 |
| 0 | 1278 const Register count = end; // 'end' register contains bytes count now |
| 304 | 1279 __ addptr(start, scratch); |
| 0 | 1280 __ BIND(L_loop); |
| 1281 __ movb(Address(start, count, Address::times_1), 0); | |
| 304 | 1282 __ decrement(count); |
| 0 | 1283 __ jcc(Assembler::greaterEqual, L_loop); |
| 1284 } | |
|
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1285 break; |
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1286 default: |
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1287 ShouldNotReachHere(); |
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1288 |
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1289 } |
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1290 } |
| 0 | 1291 |
| 405 | 1292 |
| 0 | 1293 // Copy big chunks forward |
| 1294 // | |
| 1295 // Inputs: | |
| 1296 // end_from - source arrays end address | |
| 1297 // end_to - destination array end address | |
| 1298 // qword_count - 64-bits element count, negative | |
| 1299 // to - scratch | |
| 1300 // L_copy_32_bytes - entry label | |
| 1301 // L_copy_8_bytes - exit label | |
| 1302 // | |
| 1303 void copy_32_bytes_forward(Register end_from, Register end_to, | |
| 1304 Register qword_count, Register to, | |
| 1305 Label& L_copy_32_bytes, Label& L_copy_8_bytes) { | |
| 1306 DEBUG_ONLY(__ stop("enter at entry label, not here")); | |
| 1307 Label L_loop; | |
| 1365 | 1308 __ align(OptoLoopAlignment); |
| 0 | 1309 __ BIND(L_loop); |
| 405 | 1310 if(UseUnalignedLoadStores) { |
| 1311 __ movdqu(xmm0, Address(end_from, qword_count, Address::times_8, -24)); | |
| 1312 __ movdqu(Address(end_to, qword_count, Address::times_8, -24), xmm0); | |
| 1313 __ movdqu(xmm1, Address(end_from, qword_count, Address::times_8, - 8)); | |
| 1314 __ movdqu(Address(end_to, qword_count, Address::times_8, - 8), xmm1); | |
| 1315 | |
| 1316 } else { | |
| 1317 __ movq(to, Address(end_from, qword_count, Address::times_8, -24)); | |
| 1318 __ movq(Address(end_to, qword_count, Address::times_8, -24), to); | |
| 1319 __ movq(to, Address(end_from, qword_count, Address::times_8, -16)); | |
| 1320 __ movq(Address(end_to, qword_count, Address::times_8, -16), to); | |
| 1321 __ movq(to, Address(end_from, qword_count, Address::times_8, - 8)); | |
| 1322 __ movq(Address(end_to, qword_count, Address::times_8, - 8), to); | |
| 1323 __ movq(to, Address(end_from, qword_count, Address::times_8, - 0)); | |
| 1324 __ movq(Address(end_to, qword_count, Address::times_8, - 0), to); | |
| 1325 } | |
| 0 | 1326 __ BIND(L_copy_32_bytes); |
| 304 | 1327 __ addptr(qword_count, 4); |
| 0 | 1328 __ jcc(Assembler::lessEqual, L_loop); |
| 304 | 1329 __ subptr(qword_count, 4); |
| 0 | 1330 __ jcc(Assembler::less, L_copy_8_bytes); // Copy trailing qwords |
| 1331 } | |
| 1332 | |
| 1333 | |
| 1334 // Copy big chunks backward | |
| 1335 // | |
| 1336 // Inputs: | |
| 1337 // from - source arrays address | |
| 1338 // dest - destination array address | |
| 1339 // qword_count - 64-bits element count | |
| 1340 // to - scratch | |
| 1341 // L_copy_32_bytes - entry label | |
| 1342 // L_copy_8_bytes - exit label | |
| 1343 // | |
| 1344 void copy_32_bytes_backward(Register from, Register dest, | |
| 1345 Register qword_count, Register to, | |
| 1346 Label& L_copy_32_bytes, Label& L_copy_8_bytes) { | |
| 1347 DEBUG_ONLY(__ stop("enter at entry label, not here")); | |
| 1348 Label L_loop; | |
| 1365 | 1349 __ align(OptoLoopAlignment); |
| 0 | 1350 __ BIND(L_loop); |
| 405 | 1351 if(UseUnalignedLoadStores) { |
| 1352 __ movdqu(xmm0, Address(from, qword_count, Address::times_8, 16)); | |
| 1353 __ movdqu(Address(dest, qword_count, Address::times_8, 16), xmm0); | |
| 1354 __ movdqu(xmm1, Address(from, qword_count, Address::times_8, 0)); | |
| 1355 __ movdqu(Address(dest, qword_count, Address::times_8, 0), xmm1); | |
| 1356 | |
| 1357 } else { | |
| 1358 __ movq(to, Address(from, qword_count, Address::times_8, 24)); | |
| 1359 __ movq(Address(dest, qword_count, Address::times_8, 24), to); | |
| 1360 __ movq(to, Address(from, qword_count, Address::times_8, 16)); | |
| 1361 __ movq(Address(dest, qword_count, Address::times_8, 16), to); | |
| 1362 __ movq(to, Address(from, qword_count, Address::times_8, 8)); | |
| 1363 __ movq(Address(dest, qword_count, Address::times_8, 8), to); | |
| 1364 __ movq(to, Address(from, qword_count, Address::times_8, 0)); | |
| 1365 __ movq(Address(dest, qword_count, Address::times_8, 0), to); | |
| 1366 } | |
| 0 | 1367 __ BIND(L_copy_32_bytes); |
| 304 | 1368 __ subptr(qword_count, 4); |
| 0 | 1369 __ jcc(Assembler::greaterEqual, L_loop); |
| 304 | 1370 __ addptr(qword_count, 4); |
| 0 | 1371 __ jcc(Assembler::greater, L_copy_8_bytes); // Copy trailing qwords |
| 1372 } | |
| 1373 | |
| 1374 | |
| 1375 // Arguments: | |
| 1376 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
| 1377 // ignored | |
| 1378 // name - stub name string | |
| 1379 // | |
| 1380 // Inputs: | |
| 1381 // c_rarg0 - source array address | |
| 1382 // c_rarg1 - destination array address | |
| 1383 // c_rarg2 - element count, treated as ssize_t, can be zero | |
| 1384 // | |
| 1385 // If 'from' and/or 'to' are aligned on 4-, 2-, or 1-byte boundaries, | |
| 1386 // we let the hardware handle it. The one to eight bytes within words, | |
| 1387 // dwords or qwords that span cache line boundaries will still be loaded | |
| 1388 // and stored atomically. | |
| 1389 // | |
| 1390 // Side Effects: | |
| 1391 // disjoint_byte_copy_entry is set to the no-overlap entry point | |
| 1392 // used by generate_conjoint_byte_copy(). | |
| 1393 // | |
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1394 address generate_disjoint_byte_copy(bool aligned, address* entry, const char *name) { |
| 0 | 1395 __ align(CodeEntryAlignment); |
| 1396 StubCodeMark mark(this, "StubRoutines", name); | |
| 1397 address start = __ pc(); | |
| 1398 | |
| 1399 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes, L_copy_2_bytes; | |
| 1400 Label L_copy_byte, L_exit; | |
| 1401 const Register from = rdi; // source array address | |
| 1402 const Register to = rsi; // destination array address | |
| 1403 const Register count = rdx; // elements count | |
| 1404 const Register byte_count = rcx; | |
| 1405 const Register qword_count = count; | |
| 1406 const Register end_from = from; // source array end address | |
| 1407 const Register end_to = to; // destination array end address | |
| 1408 // End pointers are inclusive, and if count is not zero they point | |
| 1409 // to the last unit copied: end_to[0] := end_from[0] | |
| 1410 | |
| 1411 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 1412 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
| 1413 | |
|
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1414 if (entry != NULL) { |
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1415 *entry = __ pc(); |
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1416 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1417 BLOCK_COMMENT("Entry:"); |
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1418 } |
| 0 | 1419 |
| 1420 setup_arg_regs(); // from => rdi, to => rsi, count => rdx | |
| 1421 // r9 and r10 may be used to save non-volatile registers | |
| 1422 | |
| 1423 // 'from', 'to' and 'count' are now valid | |
| 304 | 1424 __ movptr(byte_count, count); |
| 1425 __ shrptr(count, 3); // count => qword_count | |
| 0 | 1426 |
| 1427 // Copy from low to high addresses. Use 'to' as scratch. | |
| 304 | 1428 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
| 1429 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
| 1430 __ negptr(qword_count); // make the count negative | |
| 0 | 1431 __ jmp(L_copy_32_bytes); |
| 1432 | |
| 1433 // Copy trailing qwords | |
| 1434 __ BIND(L_copy_8_bytes); | |
| 1435 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
| 1436 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
| 304 | 1437 __ increment(qword_count); |
| 0 | 1438 __ jcc(Assembler::notZero, L_copy_8_bytes); |
| 1439 | |
| 1440 // Check for and copy trailing dword | |
| 1441 __ BIND(L_copy_4_bytes); | |
| 304 | 1442 __ testl(byte_count, 4); |
| 0 | 1443 __ jccb(Assembler::zero, L_copy_2_bytes); |
| 1444 __ movl(rax, Address(end_from, 8)); | |
| 1445 __ movl(Address(end_to, 8), rax); | |
| 1446 | |
| 304 | 1447 __ addptr(end_from, 4); |
| 1448 __ addptr(end_to, 4); | |
| 0 | 1449 |
| 1450 // Check for and copy trailing word | |
| 1451 __ BIND(L_copy_2_bytes); | |
| 304 | 1452 __ testl(byte_count, 2); |
| 0 | 1453 __ jccb(Assembler::zero, L_copy_byte); |
| 1454 __ movw(rax, Address(end_from, 8)); | |
| 1455 __ movw(Address(end_to, 8), rax); | |
| 1456 | |
| 304 | 1457 __ addptr(end_from, 2); |
| 1458 __ addptr(end_to, 2); | |
| 0 | 1459 |
| 1460 // Check for and copy trailing byte | |
| 1461 __ BIND(L_copy_byte); | |
| 304 | 1462 __ testl(byte_count, 1); |
| 0 | 1463 __ jccb(Assembler::zero, L_exit); |
| 1464 __ movb(rax, Address(end_from, 8)); | |
| 1465 __ movb(Address(end_to, 8), rax); | |
| 1466 | |
| 1467 __ BIND(L_exit); | |
| 1468 restore_arg_regs(); | |
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1469 inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); // Update counter after rscratch1 is free |
| 304 | 1470 __ xorptr(rax, rax); // return 0 |
| 0 | 1471 __ leave(); // required for proper stackwalking of RuntimeStub frame |
| 1472 __ ret(0); | |
| 1473 | |
| 1474 // Copy in 32-bytes chunks | |
| 1475 copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
| 1476 __ jmp(L_copy_4_bytes); | |
| 1477 | |
| 1478 return start; | |
| 1479 } | |
| 1480 | |
| 1481 // Arguments: | |
| 1482 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
| 1483 // ignored | |
| 1484 // name - stub name string | |
| 1485 // | |
| 1486 // Inputs: | |
| 1487 // c_rarg0 - source array address | |
| 1488 // c_rarg1 - destination array address | |
| 1489 // c_rarg2 - element count, treated as ssize_t, can be zero | |
| 1490 // | |
| 1491 // If 'from' and/or 'to' are aligned on 4-, 2-, or 1-byte boundaries, | |
| 1492 // we let the hardware handle it. The one to eight bytes within words, | |
| 1493 // dwords or qwords that span cache line boundaries will still be loaded | |
| 1494 // and stored atomically. | |
| 1495 // | |
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1496 address generate_conjoint_byte_copy(bool aligned, address nooverlap_target, |
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1497 address* entry, const char *name) { |
| 0 | 1498 __ align(CodeEntryAlignment); |
| 1499 StubCodeMark mark(this, "StubRoutines", name); | |
| 1500 address start = __ pc(); | |
| 1501 | |
| 1502 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes, L_copy_2_bytes; | |
| 1503 const Register from = rdi; // source array address | |
| 1504 const Register to = rsi; // destination array address | |
| 1505 const Register count = rdx; // elements count | |
| 1506 const Register byte_count = rcx; | |
| 1507 const Register qword_count = count; | |
| 1508 | |
| 1509 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 1510 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
| 1511 | |
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1512 if (entry != NULL) { |
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1513 *entry = __ pc(); |
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1514 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1515 BLOCK_COMMENT("Entry:"); |
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1516 } |
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1517 |
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1518 array_overlap_test(nooverlap_target, Address::times_1); |
| 0 | 1519 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
| 1520 // r9 and r10 may be used to save non-volatile registers | |
| 1521 | |
| 1522 // 'from', 'to' and 'count' are now valid | |
| 304 | 1523 __ movptr(byte_count, count); |
| 1524 __ shrptr(count, 3); // count => qword_count | |
| 0 | 1525 |
| 1526 // Copy from high to low addresses. | |
| 1527 | |
| 1528 // Check for and copy trailing byte | |
| 304 | 1529 __ testl(byte_count, 1); |
| 0 | 1530 __ jcc(Assembler::zero, L_copy_2_bytes); |
| 1531 __ movb(rax, Address(from, byte_count, Address::times_1, -1)); | |
| 1532 __ movb(Address(to, byte_count, Address::times_1, -1), rax); | |
| 304 | 1533 __ decrement(byte_count); // Adjust for possible trailing word |
| 0 | 1534 |
| 1535 // Check for and copy trailing word | |
| 1536 __ BIND(L_copy_2_bytes); | |
| 304 | 1537 __ testl(byte_count, 2); |
| 0 | 1538 __ jcc(Assembler::zero, L_copy_4_bytes); |
| 1539 __ movw(rax, Address(from, byte_count, Address::times_1, -2)); | |
| 1540 __ movw(Address(to, byte_count, Address::times_1, -2), rax); | |
| 1541 | |
| 1542 // Check for and copy trailing dword | |
| 1543 __ BIND(L_copy_4_bytes); | |
| 304 | 1544 __ testl(byte_count, 4); |
| 0 | 1545 __ jcc(Assembler::zero, L_copy_32_bytes); |
| 1546 __ movl(rax, Address(from, qword_count, Address::times_8)); | |
| 1547 __ movl(Address(to, qword_count, Address::times_8), rax); | |
| 1548 __ jmp(L_copy_32_bytes); | |
| 1549 | |
| 1550 // Copy trailing qwords | |
| 1551 __ BIND(L_copy_8_bytes); | |
| 1552 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
| 1553 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
| 304 | 1554 __ decrement(qword_count); |
| 0 | 1555 __ jcc(Assembler::notZero, L_copy_8_bytes); |
| 1556 | |
| 1557 restore_arg_regs(); | |
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1558 inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); // Update counter after rscratch1 is free |
| 304 | 1559 __ xorptr(rax, rax); // return 0 |
| 0 | 1560 __ leave(); // required for proper stackwalking of RuntimeStub frame |
| 1561 __ ret(0); | |
| 1562 | |
| 1563 // Copy in 32-bytes chunks | |
| 1564 copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
| 1565 | |
| 1566 restore_arg_regs(); | |
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1567 inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); // Update counter after rscratch1 is free |
| 304 | 1568 __ xorptr(rax, rax); // return 0 |
| 0 | 1569 __ leave(); // required for proper stackwalking of RuntimeStub frame |
| 1570 __ ret(0); | |
| 1571 | |
| 1572 return start; | |
| 1573 } | |
| 1574 | |
| 1575 // Arguments: | |
| 1576 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
| 1577 // ignored | |
| 1578 // name - stub name string | |
| 1579 // | |
| 1580 // Inputs: | |
| 1581 // c_rarg0 - source array address | |
| 1582 // c_rarg1 - destination array address | |
| 1583 // c_rarg2 - element count, treated as ssize_t, can be zero | |
| 1584 // | |
| 1585 // If 'from' and/or 'to' are aligned on 4- or 2-byte boundaries, we | |
| 1586 // let the hardware handle it. The two or four words within dwords | |
| 1587 // or qwords that span cache line boundaries will still be loaded | |
| 1588 // and stored atomically. | |
| 1589 // | |
| 1590 // Side Effects: | |
| 1591 // disjoint_short_copy_entry is set to the no-overlap entry point | |
| 1592 // used by generate_conjoint_short_copy(). | |
| 1593 // | |
|
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1594 address generate_disjoint_short_copy(bool aligned, address *entry, const char *name) { |
| 0 | 1595 __ align(CodeEntryAlignment); |
| 1596 StubCodeMark mark(this, "StubRoutines", name); | |
| 1597 address start = __ pc(); | |
| 1598 | |
| 1599 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes,L_copy_2_bytes,L_exit; | |
| 1600 const Register from = rdi; // source array address | |
| 1601 const Register to = rsi; // destination array address | |
| 1602 const Register count = rdx; // elements count | |
| 1603 const Register word_count = rcx; | |
| 1604 const Register qword_count = count; | |
| 1605 const Register end_from = from; // source array end address | |
| 1606 const Register end_to = to; // destination array end address | |
| 1607 // End pointers are inclusive, and if count is not zero they point | |
| 1608 // to the last unit copied: end_to[0] := end_from[0] | |
| 1609 | |
| 1610 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 1611 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
| 1612 | |
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1613 if (entry != NULL) { |
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1614 *entry = __ pc(); |
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1615 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1616 BLOCK_COMMENT("Entry:"); |
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1617 } |
| 0 | 1618 |
| 1619 setup_arg_regs(); // from => rdi, to => rsi, count => rdx | |
| 1620 // r9 and r10 may be used to save non-volatile registers | |
| 1621 | |
| 1622 // 'from', 'to' and 'count' are now valid | |
| 304 | 1623 __ movptr(word_count, count); |
| 1624 __ shrptr(count, 2); // count => qword_count | |
| 0 | 1625 |
| 1626 // Copy from low to high addresses. Use 'to' as scratch. | |
| 304 | 1627 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
| 1628 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
| 1629 __ negptr(qword_count); | |
| 0 | 1630 __ jmp(L_copy_32_bytes); |
| 1631 | |
| 1632 // Copy trailing qwords | |
| 1633 __ BIND(L_copy_8_bytes); | |
| 1634 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
| 1635 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
| 304 | 1636 __ increment(qword_count); |
| 0 | 1637 __ jcc(Assembler::notZero, L_copy_8_bytes); |
| 1638 | |
| 1639 // Original 'dest' is trashed, so we can't use it as a | |
| 1640 // base register for a possible trailing word copy | |
| 1641 | |
| 1642 // Check for and copy trailing dword | |
| 1643 __ BIND(L_copy_4_bytes); | |
| 304 | 1644 __ testl(word_count, 2); |
| 0 | 1645 __ jccb(Assembler::zero, L_copy_2_bytes); |
| 1646 __ movl(rax, Address(end_from, 8)); | |
| 1647 __ movl(Address(end_to, 8), rax); | |
| 1648 | |
| 304 | 1649 __ addptr(end_from, 4); |
| 1650 __ addptr(end_to, 4); | |
| 0 | 1651 |
| 1652 // Check for and copy trailing word | |
| 1653 __ BIND(L_copy_2_bytes); | |
| 304 | 1654 __ testl(word_count, 1); |
| 0 | 1655 __ jccb(Assembler::zero, L_exit); |
| 1656 __ movw(rax, Address(end_from, 8)); | |
| 1657 __ movw(Address(end_to, 8), rax); | |
| 1658 | |
| 1659 __ BIND(L_exit); | |
| 1660 restore_arg_regs(); | |
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1661 inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); // Update counter after rscratch1 is free |
| 304 | 1662 __ xorptr(rax, rax); // return 0 |
| 0 | 1663 __ leave(); // required for proper stackwalking of RuntimeStub frame |
| 1664 __ ret(0); | |
| 1665 | |
| 1666 // Copy in 32-bytes chunks | |
| 1667 copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
| 1668 __ jmp(L_copy_4_bytes); | |
| 1669 | |
| 1670 return start; | |
| 1671 } | |
| 1672 | |
| 1763 | 1673 address generate_fill(BasicType t, bool aligned, const char *name) { |
| 1674 __ align(CodeEntryAlignment); | |
| 1675 StubCodeMark mark(this, "StubRoutines", name); | |
| 1676 address start = __ pc(); | |
| 1677 | |
| 1678 BLOCK_COMMENT("Entry:"); | |
| 1679 | |
| 1680 const Register to = c_rarg0; // source array address | |
| 1681 const Register value = c_rarg1; // value | |
| 1682 const Register count = c_rarg2; // elements count | |
| 1683 | |
| 1684 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 1685 | |
| 1686 __ generate_fill(t, aligned, to, value, count, rax, xmm0); | |
| 1687 | |
| 1688 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
| 1689 __ ret(0); | |
| 1690 return start; | |
| 1691 } | |
| 1692 | |
| 0 | 1693 // Arguments: |
| 1694 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
| 1695 // ignored | |
| 1696 // name - stub name string | |
| 1697 // | |
| 1698 // Inputs: | |
| 1699 // c_rarg0 - source array address | |
| 1700 // c_rarg1 - destination array address | |
| 1701 // c_rarg2 - element count, treated as ssize_t, can be zero | |
| 1702 // | |
| 1703 // If 'from' and/or 'to' are aligned on 4- or 2-byte boundaries, we | |
| 1704 // let the hardware handle it. The two or four words within dwords | |
| 1705 // or qwords that span cache line boundaries will still be loaded | |
| 1706 // and stored atomically. | |
| 1707 // | |
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1708 address generate_conjoint_short_copy(bool aligned, address nooverlap_target, |
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1709 address *entry, const char *name) { |
| 0 | 1710 __ align(CodeEntryAlignment); |
| 1711 StubCodeMark mark(this, "StubRoutines", name); | |
| 1712 address start = __ pc(); | |
| 1713 | |
| 1714 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes; | |
| 1715 const Register from = rdi; // source array address | |
| 1716 const Register to = rsi; // destination array address | |
| 1717 const Register count = rdx; // elements count | |
| 1718 const Register word_count = rcx; | |
| 1719 const Register qword_count = count; | |
| 1720 | |
| 1721 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 1722 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
| 1723 | |
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1724 if (entry != NULL) { |
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1725 *entry = __ pc(); |
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1726 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1727 BLOCK_COMMENT("Entry:"); |
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1728 } |
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1729 |
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1730 array_overlap_test(nooverlap_target, Address::times_2); |
| 0 | 1731 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
| 1732 // r9 and r10 may be used to save non-volatile registers | |
| 1733 | |
| 1734 // 'from', 'to' and 'count' are now valid | |
| 304 | 1735 __ movptr(word_count, count); |
| 1736 __ shrptr(count, 2); // count => qword_count | |
| 0 | 1737 |
| 1738 // Copy from high to low addresses. Use 'to' as scratch. | |
| 1739 | |
| 1740 // Check for and copy trailing word | |
| 304 | 1741 __ testl(word_count, 1); |
| 0 | 1742 __ jccb(Assembler::zero, L_copy_4_bytes); |
| 1743 __ movw(rax, Address(from, word_count, Address::times_2, -2)); | |
| 1744 __ movw(Address(to, word_count, Address::times_2, -2), rax); | |
| 1745 | |
| 1746 // Check for and copy trailing dword | |
| 1747 __ BIND(L_copy_4_bytes); | |
| 304 | 1748 __ testl(word_count, 2); |
| 0 | 1749 __ jcc(Assembler::zero, L_copy_32_bytes); |
| 1750 __ movl(rax, Address(from, qword_count, Address::times_8)); | |
| 1751 __ movl(Address(to, qword_count, Address::times_8), rax); | |
| 1752 __ jmp(L_copy_32_bytes); | |
| 1753 | |
| 1754 // Copy trailing qwords | |
| 1755 __ BIND(L_copy_8_bytes); | |
| 1756 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
| 1757 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
| 304 | 1758 __ decrement(qword_count); |
| 0 | 1759 __ jcc(Assembler::notZero, L_copy_8_bytes); |
| 1760 | |
| 1761 restore_arg_regs(); | |
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1762 inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); // Update counter after rscratch1 is free |
| 304 | 1763 __ xorptr(rax, rax); // return 0 |
| 0 | 1764 __ leave(); // required for proper stackwalking of RuntimeStub frame |
| 1765 __ ret(0); | |
| 1766 | |
| 1767 // Copy in 32-bytes chunks | |
| 1768 copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
| 1769 | |
| 1770 restore_arg_regs(); | |
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1771 inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); // Update counter after rscratch1 is free |
| 304 | 1772 __ xorptr(rax, rax); // return 0 |
| 0 | 1773 __ leave(); // required for proper stackwalking of RuntimeStub frame |
| 1774 __ ret(0); | |
| 1775 | |
| 1776 return start; | |
| 1777 } | |
| 1778 | |
| 1779 // Arguments: | |
| 1780 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
| 1781 // ignored | |
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1782 // is_oop - true => oop array, so generate store check code |
| 0 | 1783 // name - stub name string |
| 1784 // | |
| 1785 // Inputs: | |
| 1786 // c_rarg0 - source array address | |
| 1787 // c_rarg1 - destination array address | |
| 1788 // c_rarg2 - element count, treated as ssize_t, can be zero | |
| 1789 // | |
| 1790 // If 'from' and/or 'to' are aligned on 4-byte boundaries, we let | |
| 1791 // the hardware handle it. The two dwords within qwords that span | |
| 1792 // cache line boundaries will still be loaded and stored atomicly. | |
| 1793 // | |
| 1794 // Side Effects: | |
| 1795 // disjoint_int_copy_entry is set to the no-overlap entry point | |
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1796 // used by generate_conjoint_int_oop_copy(). |
| 0 | 1797 // |
| 2324 | 1798 address generate_disjoint_int_oop_copy(bool aligned, bool is_oop, address* entry, |
| 1799 const char *name, bool dest_uninitialized = false) { | |
| 0 | 1800 __ align(CodeEntryAlignment); |
| 1801 StubCodeMark mark(this, "StubRoutines", name); | |
| 1802 address start = __ pc(); | |
| 1803 | |
| 1804 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes, L_exit; | |
| 1805 const Register from = rdi; // source array address | |
| 1806 const Register to = rsi; // destination array address | |
| 1807 const Register count = rdx; // elements count | |
| 1808 const Register dword_count = rcx; | |
| 1809 const Register qword_count = count; | |
| 1810 const Register end_from = from; // source array end address | |
| 1811 const Register end_to = to; // destination array end address | |
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1812 const Register saved_to = r11; // saved destination array address |
| 0 | 1813 // End pointers are inclusive, and if count is not zero they point |
| 1814 // to the last unit copied: end_to[0] := end_from[0] | |
| 1815 | |
| 1816 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 1817 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
| 1818 | |
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1819 if (entry != NULL) { |
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1820 *entry = __ pc(); |
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1821 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1822 BLOCK_COMMENT("Entry:"); |
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1823 } |
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1824 |
| 0 | 1825 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
| 1826 // r9 and r10 may be used to save non-volatile registers | |
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1827 if (is_oop) { |
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1828 __ movq(saved_to, to); |
| 2324 | 1829 gen_write_ref_array_pre_barrier(to, count, dest_uninitialized); |
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1830 } |
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1831 |
| 0 | 1832 // 'from', 'to' and 'count' are now valid |
| 304 | 1833 __ movptr(dword_count, count); |
| 1834 __ shrptr(count, 1); // count => qword_count | |
| 0 | 1835 |
| 1836 // Copy from low to high addresses. Use 'to' as scratch. | |
| 304 | 1837 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
| 1838 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
| 1839 __ negptr(qword_count); | |
| 0 | 1840 __ jmp(L_copy_32_bytes); |
| 1841 | |
| 1842 // Copy trailing qwords | |
| 1843 __ BIND(L_copy_8_bytes); | |
| 1844 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
| 1845 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
| 304 | 1846 __ increment(qword_count); |
| 0 | 1847 __ jcc(Assembler::notZero, L_copy_8_bytes); |
| 1848 | |
| 1849 // Check for and copy trailing dword | |
| 1850 __ BIND(L_copy_4_bytes); | |
| 304 | 1851 __ testl(dword_count, 1); // Only byte test since the value is 0 or 1 |
| 0 | 1852 __ jccb(Assembler::zero, L_exit); |
| 1853 __ movl(rax, Address(end_from, 8)); | |
| 1854 __ movl(Address(end_to, 8), rax); | |
| 1855 | |
| 1856 __ BIND(L_exit); | |
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1857 if (is_oop) { |
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1858 __ leaq(end_to, Address(saved_to, dword_count, Address::times_4, -4)); |
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1859 gen_write_ref_array_post_barrier(saved_to, end_to, rax); |
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1860 } |
| 0 | 1861 restore_arg_regs(); |
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1862 inc_counter_np(SharedRuntime::_jint_array_copy_ctr); // Update counter after rscratch1 is free |
| 304 | 1863 __ xorptr(rax, rax); // return 0 |
| 0 | 1864 __ leave(); // required for proper stackwalking of RuntimeStub frame |
| 1865 __ ret(0); | |
| 1866 | |
| 1867 // Copy 32-bytes chunks | |
| 1868 copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
| 1869 __ jmp(L_copy_4_bytes); | |
| 1870 | |
| 1871 return start; | |
| 1872 } | |
| 1873 | |
| 1874 // Arguments: | |
| 1875 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
| 1876 // ignored | |
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1877 // is_oop - true => oop array, so generate store check code |
| 0 | 1878 // name - stub name string |
| 1879 // | |
| 1880 // Inputs: | |
| 1881 // c_rarg0 - source array address | |
| 1882 // c_rarg1 - destination array address | |
| 1883 // c_rarg2 - element count, treated as ssize_t, can be zero | |
| 1884 // | |
| 1885 // If 'from' and/or 'to' are aligned on 4-byte boundaries, we let | |
| 1886 // the hardware handle it. The two dwords within qwords that span | |
| 1887 // cache line boundaries will still be loaded and stored atomicly. | |
| 1888 // | |
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1889 address generate_conjoint_int_oop_copy(bool aligned, bool is_oop, address nooverlap_target, |
| 2324 | 1890 address *entry, const char *name, |
| 1891 bool dest_uninitialized = false) { | |
| 0 | 1892 __ align(CodeEntryAlignment); |
| 1893 StubCodeMark mark(this, "StubRoutines", name); | |
| 1894 address start = __ pc(); | |
| 1895 | |
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1896 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_2_bytes, L_exit; |
| 0 | 1897 const Register from = rdi; // source array address |
| 1898 const Register to = rsi; // destination array address | |
| 1899 const Register count = rdx; // elements count | |
| 1900 const Register dword_count = rcx; | |
| 1901 const Register qword_count = count; | |
| 1902 | |
| 1903 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 1904 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
| 1905 | |
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1906 if (entry != NULL) { |
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1907 *entry = __ pc(); |
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1908 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1909 BLOCK_COMMENT("Entry:"); |
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1910 } |
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1911 |
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1912 array_overlap_test(nooverlap_target, Address::times_4); |
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1913 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
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1914 // r9 and r10 may be used to save non-volatile registers |
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1915 |
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1916 if (is_oop) { |
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1917 // no registers are destroyed by this call |
| 2324 | 1918 gen_write_ref_array_pre_barrier(to, count, dest_uninitialized); |
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1919 } |
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1920 |
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1921 assert_clean_int(count, rax); // Make sure 'count' is clean int. |
| 0 | 1922 // 'from', 'to' and 'count' are now valid |
| 304 | 1923 __ movptr(dword_count, count); |
| 1924 __ shrptr(count, 1); // count => qword_count | |
| 0 | 1925 |
| 1926 // Copy from high to low addresses. Use 'to' as scratch. | |
| 1927 | |
| 1928 // Check for and copy trailing dword | |
| 304 | 1929 __ testl(dword_count, 1); |
| 0 | 1930 __ jcc(Assembler::zero, L_copy_32_bytes); |
| 1931 __ movl(rax, Address(from, dword_count, Address::times_4, -4)); | |
| 1932 __ movl(Address(to, dword_count, Address::times_4, -4), rax); | |
| 1933 __ jmp(L_copy_32_bytes); | |
| 1934 | |
| 1935 // Copy trailing qwords | |
| 1936 __ BIND(L_copy_8_bytes); | |
| 1937 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
| 1938 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
| 304 | 1939 __ decrement(qword_count); |
| 0 | 1940 __ jcc(Assembler::notZero, L_copy_8_bytes); |
| 1941 | |
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1942 if (is_oop) { |
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1943 __ jmp(L_exit); |
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1944 } |
| 0 | 1945 restore_arg_regs(); |
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1946 inc_counter_np(SharedRuntime::_jint_array_copy_ctr); // Update counter after rscratch1 is free |
| 304 | 1947 __ xorptr(rax, rax); // return 0 |
| 0 | 1948 __ leave(); // required for proper stackwalking of RuntimeStub frame |
| 1949 __ ret(0); | |
| 1950 | |
| 1951 // Copy in 32-bytes chunks | |
| 1952 copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
| 1953 | |
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1954 __ bind(L_exit); |
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1955 if (is_oop) { |
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1956 Register end_to = rdx; |
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1957 __ leaq(end_to, Address(to, dword_count, Address::times_4, -4)); |
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1958 gen_write_ref_array_post_barrier(to, end_to, rax); |
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1959 } |
| 0 | 1960 restore_arg_regs(); |
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1961 inc_counter_np(SharedRuntime::_jint_array_copy_ctr); // Update counter after rscratch1 is free |
| 304 | 1962 __ xorptr(rax, rax); // return 0 |
| 0 | 1963 __ leave(); // required for proper stackwalking of RuntimeStub frame |
| 1964 __ ret(0); | |
| 1965 | |
| 1966 return start; | |
| 1967 } | |
| 1968 | |
| 1969 // Arguments: | |
| 1970 // aligned - true => Input and output aligned on a HeapWord boundary == 8 bytes | |
| 1971 // ignored | |
| 1972 // is_oop - true => oop array, so generate store check code | |
| 1973 // name - stub name string | |
| 1974 // | |
| 1975 // Inputs: | |
| 1976 // c_rarg0 - source array address | |
| 1977 // c_rarg1 - destination array address | |
| 1978 // c_rarg2 - element count, treated as ssize_t, can be zero | |
| 1979 // | |
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1980 // Side Effects: |
| 0 | 1981 // disjoint_oop_copy_entry or disjoint_long_copy_entry is set to the |
| 1982 // no-overlap entry point used by generate_conjoint_long_oop_copy(). | |
| 1983 // | |
| 2324 | 1984 address generate_disjoint_long_oop_copy(bool aligned, bool is_oop, address *entry, |
| 1985 const char *name, bool dest_uninitialized = false) { | |
| 0 | 1986 __ align(CodeEntryAlignment); |
| 1987 StubCodeMark mark(this, "StubRoutines", name); | |
| 1988 address start = __ pc(); | |
| 1989 | |
| 1990 Label L_copy_32_bytes, L_copy_8_bytes, L_exit; | |
| 1991 const Register from = rdi; // source array address | |
| 1992 const Register to = rsi; // destination array address | |
| 1993 const Register qword_count = rdx; // elements count | |
| 1994 const Register end_from = from; // source array end address | |
| 1995 const Register end_to = rcx; // destination array end address | |
| 1996 const Register saved_to = to; | |
| 1997 // End pointers are inclusive, and if count is not zero they point | |
| 1998 // to the last unit copied: end_to[0] := end_from[0] | |
| 1999 | |
| 2000 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 2001 // Save no-overlap entry point for generate_conjoint_long_oop_copy() | |
| 2002 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
| 2003 | |
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2004 if (entry != NULL) { |
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2005 *entry = __ pc(); |
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2006 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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2007 BLOCK_COMMENT("Entry:"); |
| 0 | 2008 } |
| 2009 | |
| 2010 setup_arg_regs(); // from => rdi, to => rsi, count => rdx | |
| 2011 // r9 and r10 may be used to save non-volatile registers | |
| 2012 // 'from', 'to' and 'qword_count' are now valid | |
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2013 if (is_oop) { |
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2014 // no registers are destroyed by this call |
| 2324 | 2015 gen_write_ref_array_pre_barrier(to, qword_count, dest_uninitialized); |
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2016 } |
| 0 | 2017 |
| 2018 // Copy from low to high addresses. Use 'to' as scratch. | |
| 304 | 2019 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
| 2020 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
| 2021 __ negptr(qword_count); | |
| 0 | 2022 __ jmp(L_copy_32_bytes); |
| 2023 | |
| 2024 // Copy trailing qwords | |
| 2025 __ BIND(L_copy_8_bytes); | |
| 2026 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
| 2027 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
| 304 | 2028 __ increment(qword_count); |
| 0 | 2029 __ jcc(Assembler::notZero, L_copy_8_bytes); |
| 2030 | |
| 2031 if (is_oop) { | |
| 2032 __ jmp(L_exit); | |
| 2033 } else { | |
| 2034 restore_arg_regs(); | |
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2035 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); // Update counter after rscratch1 is free |
| 304 | 2036 __ xorptr(rax, rax); // return 0 |
| 0 | 2037 __ leave(); // required for proper stackwalking of RuntimeStub frame |
| 2038 __ ret(0); | |
| 2039 } | |
| 2040 | |
| 2041 // Copy 64-byte chunks | |
| 2042 copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
| 2043 | |
| 2044 if (is_oop) { | |
| 2045 __ BIND(L_exit); | |
| 2046 gen_write_ref_array_post_barrier(saved_to, end_to, rax); | |
| 2047 } | |
| 2048 restore_arg_regs(); | |
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2049 if (is_oop) { |
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2050 inc_counter_np(SharedRuntime::_oop_array_copy_ctr); // Update counter after rscratch1 is free |
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2051 } else { |
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2052 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); // Update counter after rscratch1 is free |
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2053 } |
| 304 | 2054 __ xorptr(rax, rax); // return 0 |
| 0 | 2055 __ leave(); // required for proper stackwalking of RuntimeStub frame |
| 2056 __ ret(0); | |
| 2057 | |
| 2058 return start; | |
| 2059 } | |
| 2060 | |
| 2061 // Arguments: | |
| 2062 // aligned - true => Input and output aligned on a HeapWord boundary == 8 bytes | |
| 2063 // ignored | |
| 2064 // is_oop - true => oop array, so generate store check code | |
| 2065 // name - stub name string | |
| 2066 // | |
| 2067 // Inputs: | |
| 2068 // c_rarg0 - source array address | |
| 2069 // c_rarg1 - destination array address | |
| 2070 // c_rarg2 - element count, treated as ssize_t, can be zero | |
| 2071 // | |
| 2324 | 2072 address generate_conjoint_long_oop_copy(bool aligned, bool is_oop, |
| 2073 address nooverlap_target, address *entry, | |
| 2074 const char *name, bool dest_uninitialized = false) { | |
| 0 | 2075 __ align(CodeEntryAlignment); |
| 2076 StubCodeMark mark(this, "StubRoutines", name); | |
| 2077 address start = __ pc(); | |
| 2078 | |
| 2079 Label L_copy_32_bytes, L_copy_8_bytes, L_exit; | |
| 2080 const Register from = rdi; // source array address | |
| 2081 const Register to = rsi; // destination array address | |
| 2082 const Register qword_count = rdx; // elements count | |
| 2083 const Register saved_count = rcx; | |
| 2084 | |
| 2085 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 2086 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
| 2087 | |
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2088 if (entry != NULL) { |
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2089 *entry = __ pc(); |
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2090 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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2091 BLOCK_COMMENT("Entry:"); |
| 0 | 2092 } |
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2093 |
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2094 array_overlap_test(nooverlap_target, Address::times_8); |
| 0 | 2095 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
| 2096 // r9 and r10 may be used to save non-volatile registers | |
| 2097 // 'from', 'to' and 'qword_count' are now valid | |
| 2098 if (is_oop) { | |
| 2099 // Save to and count for store barrier | |
| 304 | 2100 __ movptr(saved_count, qword_count); |
| 0 | 2101 // No registers are destroyed by this call |
| 2324 | 2102 gen_write_ref_array_pre_barrier(to, saved_count, dest_uninitialized); |
| 0 | 2103 } |
| 2104 | |
| 2105 __ jmp(L_copy_32_bytes); | |
| 2106 | |
| 2107 // Copy trailing qwords | |
| 2108 __ BIND(L_copy_8_bytes); | |
| 2109 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
| 2110 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
| 304 | 2111 __ decrement(qword_count); |
| 0 | 2112 __ jcc(Assembler::notZero, L_copy_8_bytes); |
| 2113 | |
| 2114 if (is_oop) { | |
| 2115 __ jmp(L_exit); | |
| 2116 } else { | |
| 2117 restore_arg_regs(); | |
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2118 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); // Update counter after rscratch1 is free |
| 304 | 2119 __ xorptr(rax, rax); // return 0 |
| 0 | 2120 __ leave(); // required for proper stackwalking of RuntimeStub frame |
| 2121 __ ret(0); | |
| 2122 } | |
| 2123 | |
| 2124 // Copy in 32-bytes chunks | |
| 2125 copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
| 2126 | |
| 2127 if (is_oop) { | |
| 2128 __ BIND(L_exit); | |
| 304 | 2129 __ lea(rcx, Address(to, saved_count, Address::times_8, -8)); |
| 0 | 2130 gen_write_ref_array_post_barrier(to, rcx, rax); |
| 2131 } | |
| 2132 restore_arg_regs(); | |
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2133 if (is_oop) { |
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2134 inc_counter_np(SharedRuntime::_oop_array_copy_ctr); // Update counter after rscratch1 is free |
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2135 } else { |
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2136 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); // Update counter after rscratch1 is free |
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2137 } |
| 304 | 2138 __ xorptr(rax, rax); // return 0 |
| 0 | 2139 __ leave(); // required for proper stackwalking of RuntimeStub frame |
| 2140 __ ret(0); | |
| 2141 | |
| 2142 return start; | |
| 2143 } | |
| 2144 | |
| 2145 | |
| 2146 // Helper for generating a dynamic type check. | |
| 2147 // Smashes no registers. | |
| 2148 void generate_type_check(Register sub_klass, | |
| 2149 Register super_check_offset, | |
| 2150 Register super_klass, | |
| 2151 Label& L_success) { | |
| 2152 assert_different_registers(sub_klass, super_check_offset, super_klass); | |
| 2153 | |
| 2154 BLOCK_COMMENT("type_check:"); | |
| 2155 | |
| 2156 Label L_miss; | |
| 2157 | |
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2158 __ check_klass_subtype_fast_path(sub_klass, super_klass, noreg, &L_success, &L_miss, NULL, |
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2159 super_check_offset); |
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2160 __ check_klass_subtype_slow_path(sub_klass, super_klass, noreg, noreg, &L_success, NULL); |
| 0 | 2161 |
| 2162 // Fall through on failure! | |
| 2163 __ BIND(L_miss); | |
| 2164 } | |
| 2165 | |
| 2166 // | |
| 2167 // Generate checkcasting array copy stub | |
| 2168 // | |
| 2169 // Input: | |
| 2170 // c_rarg0 - source array address | |
| 2171 // c_rarg1 - destination array address | |
| 2172 // c_rarg2 - element count, treated as ssize_t, can be zero | |
| 2173 // c_rarg3 - size_t ckoff (super_check_offset) | |
| 2174 // not Win64 | |
| 2175 // c_rarg4 - oop ckval (super_klass) | |
| 2176 // Win64 | |
| 2177 // rsp+40 - oop ckval (super_klass) | |
| 2178 // | |
| 2179 // Output: | |
| 2180 // rax == 0 - success | |
| 2181 // rax == -1^K - failure, where K is partial transfer count | |
| 2182 // | |
| 2324 | 2183 address generate_checkcast_copy(const char *name, address *entry, |
| 2184 bool dest_uninitialized = false) { | |
| 0 | 2185 |
| 2186 Label L_load_element, L_store_element, L_do_card_marks, L_done; | |
| 2187 | |
| 2188 // Input registers (after setup_arg_regs) | |
| 2189 const Register from = rdi; // source array address | |
| 2190 const Register to = rsi; // destination array address | |
| 2191 const Register length = rdx; // elements count | |
| 2192 const Register ckoff = rcx; // super_check_offset | |
| 2193 const Register ckval = r8; // super_klass | |
| 2194 | |
| 2195 // Registers used as temps (r13, r14 are save-on-entry) | |
| 2196 const Register end_from = from; // source array end address | |
| 2197 const Register end_to = r13; // destination array end address | |
| 2198 const Register count = rdx; // -(count_remaining) | |
| 2199 const Register r14_length = r14; // saved copy of length | |
| 2200 // End pointers are inclusive, and if length is not zero they point | |
| 2201 // to the last unit copied: end_to[0] := end_from[0] | |
| 2202 | |
| 2203 const Register rax_oop = rax; // actual oop copied | |
| 2204 const Register r11_klass = r11; // oop._klass | |
| 2205 | |
| 2206 //--------------------------------------------------------------- | |
| 2207 // Assembler stub will be used for this call to arraycopy | |
| 2208 // if the two arrays are subtypes of Object[] but the | |
| 2209 // destination array type is not equal to or a supertype | |
| 2210 // of the source type. Each element must be separately | |
| 2211 // checked. | |
| 2212 | |
| 2213 __ align(CodeEntryAlignment); | |
| 2214 StubCodeMark mark(this, "StubRoutines", name); | |
| 2215 address start = __ pc(); | |
| 2216 | |
| 2217 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 2218 | |
| 2219 #ifdef ASSERT | |
| 2220 // caller guarantees that the arrays really are different | |
| 2221 // otherwise, we would have to make conjoint checks | |
| 2222 { Label L; | |
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2223 array_overlap_test(L, TIMES_OOP); |
| 0 | 2224 __ stop("checkcast_copy within a single array"); |
| 2225 __ bind(L); | |
| 2226 } | |
| 2227 #endif //ASSERT | |
| 2228 | |
| 2229 setup_arg_regs(4); // from => rdi, to => rsi, length => rdx | |
| 2230 // ckoff => rcx, ckval => r8 | |
| 2231 // r9 and r10 may be used to save non-volatile registers | |
| 2232 #ifdef _WIN64 | |
| 2233 // last argument (#4) is on stack on Win64 | |
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2234 __ movptr(ckval, Address(rsp, 6 * wordSize)); |
| 0 | 2235 #endif |
| 2236 | |
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6998985: faulty generic arraycopy on windows x86_64: 4th arg overwritten with oop
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1972
diff
changeset
|
2237 // Caller of this entry point must set up the argument registers. |
|
2313
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7020521: arraycopy stubs place prebarriers incorrectly
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2238 if (entry != NULL) { |
|
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2239 *entry = __ pc(); |
|
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|
2240 BLOCK_COMMENT("Entry:"); |
|
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7020521: arraycopy stubs place prebarriers incorrectly
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|
2241 } |
|
2006
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6998985: faulty generic arraycopy on windows x86_64: 4th arg overwritten with oop
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diff
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|
2242 |
|
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6998985: faulty generic arraycopy on windows x86_64: 4th arg overwritten with oop
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|
2243 // allocate spill slots for r13, r14 |
|
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6998985: faulty generic arraycopy on windows x86_64: 4th arg overwritten with oop
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diff
changeset
|
2244 enum { |
|
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6998985: faulty generic arraycopy on windows x86_64: 4th arg overwritten with oop
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1972
diff
changeset
|
2245 saved_r13_offset, |
|
bbefa3ca1543
6998985: faulty generic arraycopy on windows x86_64: 4th arg overwritten with oop
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|
2246 saved_r14_offset, |
|
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6998985: faulty generic arraycopy on windows x86_64: 4th arg overwritten with oop
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|
2247 saved_rbp_offset |
|
bbefa3ca1543
6998985: faulty generic arraycopy on windows x86_64: 4th arg overwritten with oop
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diff
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|
2248 }; |
|
bbefa3ca1543
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diff
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|
2249 __ subptr(rsp, saved_rbp_offset * wordSize); |
|
bbefa3ca1543
6998985: faulty generic arraycopy on windows x86_64: 4th arg overwritten with oop
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|
2250 __ movptr(Address(rsp, saved_r13_offset * wordSize), r13); |
|
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1972
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|
2251 __ movptr(Address(rsp, saved_r14_offset * wordSize), r14); |
|
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|
2252 |
| 0 | 2253 // check that int operands are properly extended to size_t |
| 2254 assert_clean_int(length, rax); | |
| 2255 assert_clean_int(ckoff, rax); | |
| 2256 | |
| 2257 #ifdef ASSERT | |
| 2258 BLOCK_COMMENT("assert consistent ckoff/ckval"); | |
| 2259 // The ckoff and ckval must be mutually consistent, | |
| 2260 // even though caller generates both. | |
| 2261 { Label L; | |
|
4762
069ab3f976d3
7118863: Move sizeof(klassOopDesc) into the *Klass::*_offset_in_bytes() functions
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4118
diff
changeset
|
2262 int sco_offset = in_bytes(Klass::super_check_offset_offset()); |
| 0 | 2263 __ cmpl(ckoff, Address(ckval, sco_offset)); |
| 2264 __ jcc(Assembler::equal, L); | |
| 2265 __ stop("super_check_offset inconsistent"); | |
| 2266 __ bind(L); | |
| 2267 } | |
| 2268 #endif //ASSERT | |
| 2269 | |
| 2270 // Loop-invariant addresses. They are exclusive end pointers. | |
|
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2271 Address end_from_addr(from, length, TIMES_OOP, 0); |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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2272 Address end_to_addr(to, length, TIMES_OOP, 0); |
| 0 | 2273 // Loop-variant addresses. They assume post-incremented count < 0. |
|
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|
2274 Address from_element_addr(end_from, count, TIMES_OOP, 0); |
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|
2275 Address to_element_addr(end_to, count, TIMES_OOP, 0); |
| 0 | 2276 |
| 2324 | 2277 gen_write_ref_array_pre_barrier(to, count, dest_uninitialized); |
| 0 | 2278 |
| 2279 // Copy from low to high addresses, indexed from the end of each array. | |
| 304 | 2280 __ lea(end_from, end_from_addr); |
| 2281 __ lea(end_to, end_to_addr); | |
| 2282 __ movptr(r14_length, length); // save a copy of the length | |
| 2283 assert(length == count, ""); // else fix next line: | |
| 2284 __ negptr(count); // negate and test the length | |
| 0 | 2285 __ jcc(Assembler::notZero, L_load_element); |
| 2286 | |
| 2287 // Empty array: Nothing to do. | |
| 304 | 2288 __ xorptr(rax, rax); // return 0 on (trivial) success |
| 0 | 2289 __ jmp(L_done); |
| 2290 | |
| 2291 // ======== begin loop ======== | |
| 2292 // (Loop is rotated; its entry is L_load_element.) | |
| 2293 // Loop control: | |
| 2294 // for (count = -count; count != 0; count++) | |
| 2295 // Base pointers src, dst are biased by 8*(count-1),to last element. | |
| 1365 | 2296 __ align(OptoLoopAlignment); |
| 0 | 2297 |
| 2298 __ BIND(L_store_element); | |
|
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2299 __ store_heap_oop(to_element_addr, rax_oop); // store the oop |
| 304 | 2300 __ increment(count); // increment the count toward zero |
| 0 | 2301 __ jcc(Assembler::zero, L_do_card_marks); |
| 2302 | |
| 2303 // ======== loop entry is here ======== | |
| 2304 __ BIND(L_load_element); | |
|
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|
2305 __ load_heap_oop(rax_oop, from_element_addr); // load the oop |
| 304 | 2306 __ testptr(rax_oop, rax_oop); |
| 0 | 2307 __ jcc(Assembler::zero, L_store_element); |
| 2308 | |
|
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2309 __ load_klass(r11_klass, rax_oop);// query the object klass |
| 0 | 2310 generate_type_check(r11_klass, ckoff, ckval, L_store_element); |
| 2311 // ======== end loop ======== | |
| 2312 | |
| 2313 // It was a real error; we must depend on the caller to finish the job. | |
| 2314 // Register rdx = -1 * number of *remaining* oops, r14 = *total* oops. | |
| 2315 // Emit GC store barriers for the oops we have copied (r14 + rdx), | |
| 2316 // and report their number to the caller. | |
| 2317 assert_different_registers(rax, r14_length, count, to, end_to, rcx); | |
| 304 | 2318 __ lea(end_to, to_element_addr); |
|
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6700789: G1: Enable use of compressed oops with G1 heaps
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diff
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|
2319 __ addptr(end_to, -heapOopSize); // make an inclusive end pointer |
| 362 | 2320 gen_write_ref_array_post_barrier(to, end_to, rscratch1); |
| 304 | 2321 __ movptr(rax, r14_length); // original oops |
| 2322 __ addptr(rax, count); // K = (original - remaining) oops | |
| 2323 __ notptr(rax); // report (-1^K) to caller | |
| 0 | 2324 __ jmp(L_done); |
| 2325 | |
| 2326 // Come here on success only. | |
| 2327 __ BIND(L_do_card_marks); | |
|
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diff
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|
2328 __ addptr(end_to, -heapOopSize); // make an inclusive end pointer |
| 362 | 2329 gen_write_ref_array_post_barrier(to, end_to, rscratch1); |
| 304 | 2330 __ xorptr(rax, rax); // return 0 on success |
| 0 | 2331 |
| 2332 // Common exit point (success or failure). | |
| 2333 __ BIND(L_done); | |
| 304 | 2334 __ movptr(r13, Address(rsp, saved_r13_offset * wordSize)); |
| 2335 __ movptr(r14, Address(rsp, saved_r14_offset * wordSize)); | |
| 0 | 2336 restore_arg_regs(); |
|
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|
2337 inc_counter_np(SharedRuntime::_checkcast_array_copy_ctr); // Update counter after rscratch1 is free |
| 0 | 2338 __ leave(); // required for proper stackwalking of RuntimeStub frame |
| 2339 __ ret(0); | |
| 2340 | |
| 2341 return start; | |
| 2342 } | |
| 2343 | |
| 2344 // | |
| 2345 // Generate 'unsafe' array copy stub | |
| 2346 // Though just as safe as the other stubs, it takes an unscaled | |
| 2347 // size_t argument instead of an element count. | |
| 2348 // | |
| 2349 // Input: | |
| 2350 // c_rarg0 - source array address | |
| 2351 // c_rarg1 - destination array address | |
| 2352 // c_rarg2 - byte count, treated as ssize_t, can be zero | |
| 2353 // | |
| 2354 // Examines the alignment of the operands and dispatches | |
| 2355 // to a long, int, short, or byte copy loop. | |
| 2356 // | |
|
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2006
diff
changeset
|
2357 address generate_unsafe_copy(const char *name, |
|
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diff
changeset
|
2358 address byte_copy_entry, address short_copy_entry, |
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|
2359 address int_copy_entry, address long_copy_entry) { |
| 0 | 2360 |
| 2361 Label L_long_aligned, L_int_aligned, L_short_aligned; | |
| 2362 | |
| 2363 // Input registers (before setup_arg_regs) | |
| 2364 const Register from = c_rarg0; // source array address | |
| 2365 const Register to = c_rarg1; // destination array address | |
| 2366 const Register size = c_rarg2; // byte count (size_t) | |
| 2367 | |
| 2368 // Register used as a temp | |
| 2369 const Register bits = rax; // test copy of low bits | |
| 2370 | |
| 2371 __ align(CodeEntryAlignment); | |
| 2372 StubCodeMark mark(this, "StubRoutines", name); | |
| 2373 address start = __ pc(); | |
| 2374 | |
| 2375 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 2376 | |
| 2377 // bump this on entry, not on exit: | |
| 2378 inc_counter_np(SharedRuntime::_unsafe_array_copy_ctr); | |
| 2379 | |
| 304 | 2380 __ mov(bits, from); |
| 2381 __ orptr(bits, to); | |
| 2382 __ orptr(bits, size); | |
| 0 | 2383 |
| 2384 __ testb(bits, BytesPerLong-1); | |
| 2385 __ jccb(Assembler::zero, L_long_aligned); | |
| 2386 | |
| 2387 __ testb(bits, BytesPerInt-1); | |
| 2388 __ jccb(Assembler::zero, L_int_aligned); | |
| 2389 | |
| 2390 __ testb(bits, BytesPerShort-1); | |
| 2391 __ jump_cc(Assembler::notZero, RuntimeAddress(byte_copy_entry)); | |
| 2392 | |
| 2393 __ BIND(L_short_aligned); | |
| 304 | 2394 __ shrptr(size, LogBytesPerShort); // size => short_count |
| 0 | 2395 __ jump(RuntimeAddress(short_copy_entry)); |
| 2396 | |
| 2397 __ BIND(L_int_aligned); | |
| 304 | 2398 __ shrptr(size, LogBytesPerInt); // size => int_count |
| 0 | 2399 __ jump(RuntimeAddress(int_copy_entry)); |
| 2400 | |
| 2401 __ BIND(L_long_aligned); | |
| 304 | 2402 __ shrptr(size, LogBytesPerLong); // size => qword_count |
| 0 | 2403 __ jump(RuntimeAddress(long_copy_entry)); |
| 2404 | |
| 2405 return start; | |
| 2406 } | |
| 2407 | |
| 2408 // Perform range checks on the proposed arraycopy. | |
| 2409 // Kills temp, but nothing else. | |
| 2410 // Also, clean the sign bits of src_pos and dst_pos. | |
| 2411 void arraycopy_range_checks(Register src, // source array oop (c_rarg0) | |
| 2412 Register src_pos, // source position (c_rarg1) | |
| 2413 Register dst, // destination array oo (c_rarg2) | |
| 2414 Register dst_pos, // destination position (c_rarg3) | |
| 2415 Register length, | |
| 2416 Register temp, | |
| 2417 Label& L_failed) { | |
| 2418 BLOCK_COMMENT("arraycopy_range_checks:"); | |
| 2419 | |
| 2420 // if (src_pos + length > arrayOop(src)->length()) FAIL; | |
| 2421 __ movl(temp, length); | |
| 2422 __ addl(temp, src_pos); // src_pos + length | |
| 2423 __ cmpl(temp, Address(src, arrayOopDesc::length_offset_in_bytes())); | |
| 2424 __ jcc(Assembler::above, L_failed); | |
| 2425 | |
| 2426 // if (dst_pos + length > arrayOop(dst)->length()) FAIL; | |
| 2427 __ movl(temp, length); | |
| 2428 __ addl(temp, dst_pos); // dst_pos + length | |
| 2429 __ cmpl(temp, Address(dst, arrayOopDesc::length_offset_in_bytes())); | |
| 2430 __ jcc(Assembler::above, L_failed); | |
| 2431 | |
| 2432 // Have to clean up high 32-bits of 'src_pos' and 'dst_pos'. | |
| 2433 // Move with sign extension can be used since they are positive. | |
| 2434 __ movslq(src_pos, src_pos); | |
| 2435 __ movslq(dst_pos, dst_pos); | |
| 2436 | |
| 2437 BLOCK_COMMENT("arraycopy_range_checks done"); | |
| 2438 } | |
| 2439 | |
| 2440 // | |
| 2441 // Generate generic array copy stubs | |
| 2442 // | |
| 2443 // Input: | |
| 2444 // c_rarg0 - src oop | |
| 2445 // c_rarg1 - src_pos (32-bits) | |
| 2446 // c_rarg2 - dst oop | |
| 2447 // c_rarg3 - dst_pos (32-bits) | |
| 2448 // not Win64 | |
| 2449 // c_rarg4 - element count (32-bits) | |
| 2450 // Win64 | |
| 2451 // rsp+40 - element count (32-bits) | |
| 2452 // | |
| 2453 // Output: | |
| 2454 // rax == 0 - success | |
| 2455 // rax == -1^K - failure, where K is partial transfer count | |
| 2456 // | |
|
2313
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diff
changeset
|
2457 address generate_generic_copy(const char *name, |
|
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7020521: arraycopy stubs place prebarriers incorrectly
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diff
changeset
|
2458 address byte_copy_entry, address short_copy_entry, |
|
2409
348c0df561a9
7026307: DEBUG MESSAGE: broken null klass on amd64
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2407
diff
changeset
|
2459 address int_copy_entry, address oop_copy_entry, |
|
348c0df561a9
7026307: DEBUG MESSAGE: broken null klass on amd64
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diff
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|
2460 address long_copy_entry, address checkcast_copy_entry) { |
| 0 | 2461 |
| 2462 Label L_failed, L_failed_0, L_objArray; | |
| 2463 Label L_copy_bytes, L_copy_shorts, L_copy_ints, L_copy_longs; | |
| 2464 | |
| 2465 // Input registers | |
| 2466 const Register src = c_rarg0; // source array oop | |
| 2467 const Register src_pos = c_rarg1; // source position | |
| 2468 const Register dst = c_rarg2; // destination array oop | |
| 2469 const Register dst_pos = c_rarg3; // destination position | |
|
2006
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6998985: faulty generic arraycopy on windows x86_64: 4th arg overwritten with oop
twisti
parents:
1972
diff
changeset
|
2470 #ifndef _WIN64 |
|
bbefa3ca1543
6998985: faulty generic arraycopy on windows x86_64: 4th arg overwritten with oop
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parents:
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diff
changeset
|
2471 const Register length = c_rarg4; |
| 0 | 2472 #else |
|
2006
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diff
changeset
|
2473 const Address length(rsp, 6 * wordSize); // elements count is on stack on Win64 |
| 0 | 2474 #endif |
| 2475 | |
| 2476 { int modulus = CodeEntryAlignment; | |
| 2477 int target = modulus - 5; // 5 = sizeof jmp(L_failed) | |
| 2478 int advance = target - (__ offset() % modulus); | |
| 2479 if (advance < 0) advance += modulus; | |
| 2480 if (advance > 0) __ nop(advance); | |
| 2481 } | |
| 2482 StubCodeMark mark(this, "StubRoutines", name); | |
| 2483 | |
| 2484 // Short-hop target to L_failed. Makes for denser prologue code. | |
| 2485 __ BIND(L_failed_0); | |
| 2486 __ jmp(L_failed); | |
| 2487 assert(__ offset() % CodeEntryAlignment == 0, "no further alignment needed"); | |
| 2488 | |
| 2489 __ align(CodeEntryAlignment); | |
| 2490 address start = __ pc(); | |
| 2491 | |
| 2492 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 2493 | |
| 2494 // bump this on entry, not on exit: | |
| 2495 inc_counter_np(SharedRuntime::_generic_array_copy_ctr); | |
| 2496 | |
| 2497 //----------------------------------------------------------------------- | |
| 2498 // Assembler stub will be used for this call to arraycopy | |
| 2499 // if the following conditions are met: | |
| 2500 // | |
| 2501 // (1) src and dst must not be null. | |
| 2502 // (2) src_pos must not be negative. | |
| 2503 // (3) dst_pos must not be negative. | |
| 2504 // (4) length must not be negative. | |
| 2505 // (5) src klass and dst klass should be the same and not NULL. | |
| 2506 // (6) src and dst should be arrays. | |
| 2507 // (7) src_pos + length must not exceed length of src. | |
| 2508 // (8) dst_pos + length must not exceed length of dst. | |
| 2509 // | |
| 2510 | |
| 2511 // if (src == NULL) return -1; | |
| 304 | 2512 __ testptr(src, src); // src oop |
| 0 | 2513 size_t j1off = __ offset(); |
| 2514 __ jccb(Assembler::zero, L_failed_0); | |
| 2515 | |
| 2516 // if (src_pos < 0) return -1; | |
| 2517 __ testl(src_pos, src_pos); // src_pos (32-bits) | |
| 2518 __ jccb(Assembler::negative, L_failed_0); | |
| 2519 | |
| 2520 // if (dst == NULL) return -1; | |
| 304 | 2521 __ testptr(dst, dst); // dst oop |
| 0 | 2522 __ jccb(Assembler::zero, L_failed_0); |
| 2523 | |
| 2524 // if (dst_pos < 0) return -1; | |
| 2525 __ testl(dst_pos, dst_pos); // dst_pos (32-bits) | |
| 2526 size_t j4off = __ offset(); | |
| 2527 __ jccb(Assembler::negative, L_failed_0); | |
| 2528 | |
| 2529 // The first four tests are very dense code, | |
| 2530 // but not quite dense enough to put four | |
| 2531 // jumps in a 16-byte instruction fetch buffer. | |
| 2532 // That's good, because some branch predicters | |
| 2533 // do not like jumps so close together. | |
| 2534 // Make sure of this. | |
| 2535 guarantee(((j1off ^ j4off) & ~15) != 0, "I$ line of 1st & 4th jumps"); | |
| 2536 | |
| 2537 // registers used as temp | |
| 2538 const Register r11_length = r11; // elements count to copy | |
| 2539 const Register r10_src_klass = r10; // array klass | |
| 2540 | |
| 2541 // if (length < 0) return -1; | |
|
2006
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diff
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|
2542 __ movl(r11_length, length); // length (elements count, 32-bits value) |
| 0 | 2543 __ testl(r11_length, r11_length); |
| 2544 __ jccb(Assembler::negative, L_failed_0); | |
| 2545 | |
|
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|
2546 __ load_klass(r10_src_klass, src); |
| 0 | 2547 #ifdef ASSERT |
| 2548 // assert(src->klass() != NULL); | |
|
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diff
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|
2549 { |
|
bbefa3ca1543
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diff
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|
2550 BLOCK_COMMENT("assert klasses not null {"); |
|
bbefa3ca1543
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diff
changeset
|
2551 Label L1, L2; |
| 304 | 2552 __ testptr(r10_src_klass, r10_src_klass); |
| 0 | 2553 __ jcc(Assembler::notZero, L2); // it is broken if klass is NULL |
| 2554 __ bind(L1); | |
| 2555 __ stop("broken null klass"); | |
| 2556 __ bind(L2); | |
|
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diff
changeset
|
2557 __ load_klass(rax, dst); |
|
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diff
changeset
|
2558 __ cmpq(rax, 0); |
| 0 | 2559 __ jcc(Assembler::equal, L1); // this would be broken also |
|
2006
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diff
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|
2560 BLOCK_COMMENT("} assert klasses not null done"); |
| 0 | 2561 } |
| 2562 #endif | |
| 2563 | |
| 2564 // Load layout helper (32-bits) | |
| 2565 // | |
| 2566 // |array_tag| | header_size | element_type | |log2_element_size| | |
| 2567 // 32 30 24 16 8 2 0 | |
| 2568 // | |
| 2569 // array_tag: typeArray = 0x3, objArray = 0x2, non-array = 0x0 | |
| 2570 // | |
| 2571 | |
|
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2572 const int lh_offset = in_bytes(Klass::layout_helper_offset()); |
| 0 | 2573 |
| 2574 // Handle objArrays completely differently... | |
|
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2575 const jint objArray_lh = Klass::array_layout_helper(T_OBJECT); |
|
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2576 __ cmpl(Address(r10_src_klass, lh_offset), objArray_lh); |
| 0 | 2577 __ jcc(Assembler::equal, L_objArray); |
| 2578 | |
| 2579 // if (src->klass() != dst->klass()) return -1; | |
|
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2580 __ load_klass(rax, dst); |
|
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2581 __ cmpq(r10_src_klass, rax); |
| 0 | 2582 __ jcc(Assembler::notEqual, L_failed); |
| 2583 | |
|
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2584 const Register rax_lh = rax; // layout helper |
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2585 __ movl(rax_lh, Address(r10_src_klass, lh_offset)); |
|
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2586 |
| 0 | 2587 // if (!src->is_Array()) return -1; |
| 2588 __ cmpl(rax_lh, Klass::_lh_neutral_value); | |
| 2589 __ jcc(Assembler::greaterEqual, L_failed); | |
| 2590 | |
| 2591 // At this point, it is known to be a typeArray (array_tag 0x3). | |
| 2592 #ifdef ASSERT | |
|
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2593 { |
|
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2594 BLOCK_COMMENT("assert primitive array {"); |
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2595 Label L; |
| 0 | 2596 __ cmpl(rax_lh, (Klass::_lh_array_tag_type_value << Klass::_lh_array_tag_shift)); |
| 2597 __ jcc(Assembler::greaterEqual, L); | |
| 2598 __ stop("must be a primitive array"); | |
| 2599 __ bind(L); | |
|
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|
2600 BLOCK_COMMENT("} assert primitive array done"); |
| 0 | 2601 } |
| 2602 #endif | |
| 2603 | |
| 2604 arraycopy_range_checks(src, src_pos, dst, dst_pos, r11_length, | |
| 2605 r10, L_failed); | |
| 2606 | |
| 2607 // typeArrayKlass | |
| 2608 // | |
| 2609 // src_addr = (src + array_header_in_bytes()) + (src_pos << log2elemsize); | |
| 2610 // dst_addr = (dst + array_header_in_bytes()) + (dst_pos << log2elemsize); | |
| 2611 // | |
| 2612 | |
| 2613 const Register r10_offset = r10; // array offset | |
| 2614 const Register rax_elsize = rax_lh; // element size | |
| 2615 | |
| 2616 __ movl(r10_offset, rax_lh); | |
| 2617 __ shrl(r10_offset, Klass::_lh_header_size_shift); | |
| 304 | 2618 __ andptr(r10_offset, Klass::_lh_header_size_mask); // array_offset |
| 2619 __ addptr(src, r10_offset); // src array offset | |
| 2620 __ addptr(dst, r10_offset); // dst array offset | |
| 0 | 2621 BLOCK_COMMENT("choose copy loop based on element size"); |
| 2622 __ andl(rax_lh, Klass::_lh_log2_element_size_mask); // rax_lh -> rax_elsize | |
| 2623 | |
| 2624 // next registers should be set before the jump to corresponding stub | |
| 2625 const Register from = c_rarg0; // source array address | |
| 2626 const Register to = c_rarg1; // destination array address | |
| 2627 const Register count = c_rarg2; // elements count | |
| 2628 | |
| 2629 // 'from', 'to', 'count' registers should be set in such order | |
| 2630 // since they are the same as 'src', 'src_pos', 'dst'. | |
| 2631 | |
| 2632 __ BIND(L_copy_bytes); | |
| 2633 __ cmpl(rax_elsize, 0); | |
| 2634 __ jccb(Assembler::notEqual, L_copy_shorts); | |
| 304 | 2635 __ lea(from, Address(src, src_pos, Address::times_1, 0));// src_addr |
| 2636 __ lea(to, Address(dst, dst_pos, Address::times_1, 0));// dst_addr | |
| 2637 __ movl2ptr(count, r11_length); // length | |
| 0 | 2638 __ jump(RuntimeAddress(byte_copy_entry)); |
| 2639 | |
| 2640 __ BIND(L_copy_shorts); | |
| 2641 __ cmpl(rax_elsize, LogBytesPerShort); | |
| 2642 __ jccb(Assembler::notEqual, L_copy_ints); | |
| 304 | 2643 __ lea(from, Address(src, src_pos, Address::times_2, 0));// src_addr |
| 2644 __ lea(to, Address(dst, dst_pos, Address::times_2, 0));// dst_addr | |
| 2645 __ movl2ptr(count, r11_length); // length | |
| 0 | 2646 __ jump(RuntimeAddress(short_copy_entry)); |
| 2647 | |
| 2648 __ BIND(L_copy_ints); | |
| 2649 __ cmpl(rax_elsize, LogBytesPerInt); | |
| 2650 __ jccb(Assembler::notEqual, L_copy_longs); | |
| 304 | 2651 __ lea(from, Address(src, src_pos, Address::times_4, 0));// src_addr |
| 2652 __ lea(to, Address(dst, dst_pos, Address::times_4, 0));// dst_addr | |
| 2653 __ movl2ptr(count, r11_length); // length | |
| 0 | 2654 __ jump(RuntimeAddress(int_copy_entry)); |
| 2655 | |
| 2656 __ BIND(L_copy_longs); | |
| 2657 #ifdef ASSERT | |
|
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2658 { |
|
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|
2659 BLOCK_COMMENT("assert long copy {"); |
|
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|
2660 Label L; |
| 0 | 2661 __ cmpl(rax_elsize, LogBytesPerLong); |
| 2662 __ jcc(Assembler::equal, L); | |
| 2663 __ stop("must be long copy, but elsize is wrong"); | |
| 2664 __ bind(L); | |
|
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|
2665 BLOCK_COMMENT("} assert long copy done"); |
| 0 | 2666 } |
| 2667 #endif | |
| 304 | 2668 __ lea(from, Address(src, src_pos, Address::times_8, 0));// src_addr |
| 2669 __ lea(to, Address(dst, dst_pos, Address::times_8, 0));// dst_addr | |
| 2670 __ movl2ptr(count, r11_length); // length | |
| 0 | 2671 __ jump(RuntimeAddress(long_copy_entry)); |
| 2672 | |
| 2673 // objArrayKlass | |
| 2674 __ BIND(L_objArray); | |
|
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|
2675 // live at this point: r10_src_klass, r11_length, src[_pos], dst[_pos] |
| 0 | 2676 |
| 2677 Label L_plain_copy, L_checkcast_copy; | |
| 2678 // test array classes for subtyping | |
|
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|
2679 __ load_klass(rax, dst); |
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|
2680 __ cmpq(r10_src_klass, rax); // usual case is exact equality |
| 0 | 2681 __ jcc(Assembler::notEqual, L_checkcast_copy); |
| 2682 | |
| 2683 // Identically typed arrays can be copied without element-wise checks. | |
| 2684 arraycopy_range_checks(src, src_pos, dst, dst_pos, r11_length, | |
| 2685 r10, L_failed); | |
| 2686 | |
| 304 | 2687 __ lea(from, Address(src, src_pos, TIMES_OOP, |
| 0 | 2688 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // src_addr |
| 304 | 2689 __ lea(to, Address(dst, dst_pos, TIMES_OOP, |
| 2690 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // dst_addr | |
| 2691 __ movl2ptr(count, r11_length); // length | |
| 0 | 2692 __ BIND(L_plain_copy); |
| 2693 __ jump(RuntimeAddress(oop_copy_entry)); | |
| 2694 | |
| 2695 __ BIND(L_checkcast_copy); | |
|
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|
2696 // live at this point: r10_src_klass, r11_length, rax (dst_klass) |
| 0 | 2697 { |
| 2698 // Before looking at dst.length, make sure dst is also an objArray. | |
|
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|
2699 __ cmpl(Address(rax, lh_offset), objArray_lh); |
| 0 | 2700 __ jcc(Assembler::notEqual, L_failed); |
| 2701 | |
| 2702 // It is safe to examine both src.length and dst.length. | |
| 2703 arraycopy_range_checks(src, src_pos, dst, dst_pos, r11_length, | |
| 2704 rax, L_failed); | |
|
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|
2705 |
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|
2706 const Register r11_dst_klass = r11; |
|
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2707 __ load_klass(r11_dst_klass, dst); // reload |
| 0 | 2708 |
| 2709 // Marshal the base address arguments now, freeing registers. | |
| 304 | 2710 __ lea(from, Address(src, src_pos, TIMES_OOP, |
| 0 | 2711 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
| 304 | 2712 __ lea(to, Address(dst, dst_pos, TIMES_OOP, |
| 0 | 2713 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
|
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|
2714 __ movl(count, length); // length (reloaded) |
| 0 | 2715 Register sco_temp = c_rarg3; // this register is free now |
| 2716 assert_different_registers(from, to, count, sco_temp, | |
| 2717 r11_dst_klass, r10_src_klass); | |
| 2718 assert_clean_int(count, sco_temp); | |
| 2719 | |
| 2720 // Generate the type check. | |
|
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|
2721 const int sco_offset = in_bytes(Klass::super_check_offset_offset()); |
| 0 | 2722 __ movl(sco_temp, Address(r11_dst_klass, sco_offset)); |
| 2723 assert_clean_int(sco_temp, rax); | |
| 2724 generate_type_check(r10_src_klass, sco_temp, r11_dst_klass, L_plain_copy); | |
| 2725 | |
| 2726 // Fetch destination element klass from the objArrayKlass header. | |
|
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|
2727 int ek_offset = in_bytes(objArrayKlass::element_klass_offset()); |
| 304 | 2728 __ movptr(r11_dst_klass, Address(r11_dst_klass, ek_offset)); |
|
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|
2729 __ movl( sco_temp, Address(r11_dst_klass, sco_offset)); |
| 0 | 2730 assert_clean_int(sco_temp, rax); |
| 2731 | |
| 2732 // the checkcast_copy loop needs two extra arguments: | |
| 2733 assert(c_rarg3 == sco_temp, "#3 already in place"); | |
|
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|
2734 // Set up arguments for checkcast_copy_entry. |
|
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|
2735 setup_arg_regs(4); |
|
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2736 __ movptr(r8, r11_dst_klass); // dst.klass.element_klass, r8 is c_rarg4 on Linux/Solaris |
| 0 | 2737 __ jump(RuntimeAddress(checkcast_copy_entry)); |
| 2738 } | |
| 2739 | |
| 2740 __ BIND(L_failed); | |
| 304 | 2741 __ xorptr(rax, rax); |
| 2742 __ notptr(rax); // return -1 | |
| 0 | 2743 __ leave(); // required for proper stackwalking of RuntimeStub frame |
| 2744 __ ret(0); | |
| 2745 | |
| 2746 return start; | |
| 2747 } | |
| 2748 | |
| 2749 void generate_arraycopy_stubs() { | |
|
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2750 address entry; |
|
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2751 address entry_jbyte_arraycopy; |
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|
2752 address entry_jshort_arraycopy; |
|
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|
2753 address entry_jint_arraycopy; |
|
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|
2754 address entry_oop_arraycopy; |
|
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|
2755 address entry_jlong_arraycopy; |
|
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|
2756 address entry_checkcast_arraycopy; |
|
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|
2757 |
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2758 StubRoutines::_jbyte_disjoint_arraycopy = generate_disjoint_byte_copy(false, &entry, |
|
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|
2759 "jbyte_disjoint_arraycopy"); |
|
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|
2760 StubRoutines::_jbyte_arraycopy = generate_conjoint_byte_copy(false, entry, &entry_jbyte_arraycopy, |
|
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|
2761 "jbyte_arraycopy"); |
|
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|
2762 |
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2763 StubRoutines::_jshort_disjoint_arraycopy = generate_disjoint_short_copy(false, &entry, |
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|
2764 "jshort_disjoint_arraycopy"); |
|
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|
2765 StubRoutines::_jshort_arraycopy = generate_conjoint_short_copy(false, entry, &entry_jshort_arraycopy, |
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|
2766 "jshort_arraycopy"); |
|
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|
2767 |
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2768 StubRoutines::_jint_disjoint_arraycopy = generate_disjoint_int_oop_copy(false, false, &entry, |
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2769 "jint_disjoint_arraycopy"); |
|
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|
2770 StubRoutines::_jint_arraycopy = generate_conjoint_int_oop_copy(false, false, entry, |
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2771 &entry_jint_arraycopy, "jint_arraycopy"); |
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2772 |
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2773 StubRoutines::_jlong_disjoint_arraycopy = generate_disjoint_long_oop_copy(false, false, &entry, |
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|
2774 "jlong_disjoint_arraycopy"); |
|
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|
2775 StubRoutines::_jlong_arraycopy = generate_conjoint_long_oop_copy(false, false, entry, |
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2776 &entry_jlong_arraycopy, "jlong_arraycopy"); |
| 0 | 2777 |
|
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2778 |
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2779 if (UseCompressedOops) { |
|
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2780 StubRoutines::_oop_disjoint_arraycopy = generate_disjoint_int_oop_copy(false, true, &entry, |
|
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|
2781 "oop_disjoint_arraycopy"); |
|
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|
2782 StubRoutines::_oop_arraycopy = generate_conjoint_int_oop_copy(false, true, entry, |
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|
2783 &entry_oop_arraycopy, "oop_arraycopy"); |
| 2324 | 2784 StubRoutines::_oop_disjoint_arraycopy_uninit = generate_disjoint_int_oop_copy(false, true, &entry, |
| 2785 "oop_disjoint_arraycopy_uninit", | |
| 2786 /*dest_uninitialized*/true); | |
| 2787 StubRoutines::_oop_arraycopy_uninit = generate_conjoint_int_oop_copy(false, true, entry, | |
| 2788 NULL, "oop_arraycopy_uninit", | |
| 2789 /*dest_uninitialized*/true); | |
|
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2790 } else { |
|
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2791 StubRoutines::_oop_disjoint_arraycopy = generate_disjoint_long_oop_copy(false, true, &entry, |
|
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|
2792 "oop_disjoint_arraycopy"); |
|
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2006
diff
changeset
|
2793 StubRoutines::_oop_arraycopy = generate_conjoint_long_oop_copy(false, true, entry, |
|
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2794 &entry_oop_arraycopy, "oop_arraycopy"); |
| 2324 | 2795 StubRoutines::_oop_disjoint_arraycopy_uninit = generate_disjoint_long_oop_copy(false, true, &entry, |
| 2796 "oop_disjoint_arraycopy_uninit", | |
| 2797 /*dest_uninitialized*/true); | |
| 2798 StubRoutines::_oop_arraycopy_uninit = generate_conjoint_long_oop_copy(false, true, entry, | |
| 2799 NULL, "oop_arraycopy_uninit", | |
| 2800 /*dest_uninitialized*/true); | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
16
diff
changeset
|
2801 } |
| 0 | 2802 |
| 2324 | 2803 StubRoutines::_checkcast_arraycopy = generate_checkcast_copy("checkcast_arraycopy", &entry_checkcast_arraycopy); |
| 2804 StubRoutines::_checkcast_arraycopy_uninit = generate_checkcast_copy("checkcast_arraycopy_uninit", NULL, | |
| 2805 /*dest_uninitialized*/true); | |
| 2806 | |
|
2313
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2807 StubRoutines::_unsafe_arraycopy = generate_unsafe_copy("unsafe_arraycopy", |
|
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2808 entry_jbyte_arraycopy, |
|
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2809 entry_jshort_arraycopy, |
|
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2810 entry_jint_arraycopy, |
|
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2811 entry_jlong_arraycopy); |
|
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2812 StubRoutines::_generic_arraycopy = generate_generic_copy("generic_arraycopy", |
|
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2813 entry_jbyte_arraycopy, |
|
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2814 entry_jshort_arraycopy, |
|
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2815 entry_jint_arraycopy, |
|
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2816 entry_oop_arraycopy, |
|
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2817 entry_jlong_arraycopy, |
|
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2818 entry_checkcast_arraycopy); |
| 0 | 2819 |
| 1763 | 2820 StubRoutines::_jbyte_fill = generate_fill(T_BYTE, false, "jbyte_fill"); |
| 2821 StubRoutines::_jshort_fill = generate_fill(T_SHORT, false, "jshort_fill"); | |
| 2822 StubRoutines::_jint_fill = generate_fill(T_INT, false, "jint_fill"); | |
| 2823 StubRoutines::_arrayof_jbyte_fill = generate_fill(T_BYTE, true, "arrayof_jbyte_fill"); | |
| 2824 StubRoutines::_arrayof_jshort_fill = generate_fill(T_SHORT, true, "arrayof_jshort_fill"); | |
| 2825 StubRoutines::_arrayof_jint_fill = generate_fill(T_INT, true, "arrayof_jint_fill"); | |
| 2826 | |
| 0 | 2827 // We don't generate specialized code for HeapWord-aligned source |
| 2828 // arrays, so just use the code we've already generated | |
| 2829 StubRoutines::_arrayof_jbyte_disjoint_arraycopy = StubRoutines::_jbyte_disjoint_arraycopy; | |
| 2830 StubRoutines::_arrayof_jbyte_arraycopy = StubRoutines::_jbyte_arraycopy; | |
| 2831 | |
| 2832 StubRoutines::_arrayof_jshort_disjoint_arraycopy = StubRoutines::_jshort_disjoint_arraycopy; | |
| 2833 StubRoutines::_arrayof_jshort_arraycopy = StubRoutines::_jshort_arraycopy; | |
| 2834 | |
| 2835 StubRoutines::_arrayof_jint_disjoint_arraycopy = StubRoutines::_jint_disjoint_arraycopy; | |
| 2836 StubRoutines::_arrayof_jint_arraycopy = StubRoutines::_jint_arraycopy; | |
| 2837 | |
| 2838 StubRoutines::_arrayof_jlong_disjoint_arraycopy = StubRoutines::_jlong_disjoint_arraycopy; | |
| 2839 StubRoutines::_arrayof_jlong_arraycopy = StubRoutines::_jlong_arraycopy; | |
| 2840 | |
| 2841 StubRoutines::_arrayof_oop_disjoint_arraycopy = StubRoutines::_oop_disjoint_arraycopy; | |
| 2842 StubRoutines::_arrayof_oop_arraycopy = StubRoutines::_oop_arraycopy; | |
| 2324 | 2843 |
| 2844 StubRoutines::_arrayof_oop_disjoint_arraycopy_uninit = StubRoutines::_oop_disjoint_arraycopy_uninit; | |
| 2845 StubRoutines::_arrayof_oop_arraycopy_uninit = StubRoutines::_oop_arraycopy_uninit; | |
| 0 | 2846 } |
| 2847 | |
|
1174
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2848 void generate_math_stubs() { |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2849 { |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2850 StubCodeMark mark(this, "StubRoutines", "log"); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2851 StubRoutines::_intrinsic_log = (double (*)(double)) __ pc(); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2852 |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2853 __ subq(rsp, 8); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2854 __ movdbl(Address(rsp, 0), xmm0); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2855 __ fld_d(Address(rsp, 0)); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2856 __ flog(); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2857 __ fstp_d(Address(rsp, 0)); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2858 __ movdbl(xmm0, Address(rsp, 0)); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2859 __ addq(rsp, 8); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2860 __ ret(0); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2861 } |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2862 { |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2863 StubCodeMark mark(this, "StubRoutines", "log10"); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2864 StubRoutines::_intrinsic_log10 = (double (*)(double)) __ pc(); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2865 |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2866 __ subq(rsp, 8); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2867 __ movdbl(Address(rsp, 0), xmm0); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2868 __ fld_d(Address(rsp, 0)); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2869 __ flog10(); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2870 __ fstp_d(Address(rsp, 0)); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2871 __ movdbl(xmm0, Address(rsp, 0)); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2872 __ addq(rsp, 8); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2873 __ ret(0); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2874 } |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2875 { |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2876 StubCodeMark mark(this, "StubRoutines", "sin"); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2877 StubRoutines::_intrinsic_sin = (double (*)(double)) __ pc(); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2878 |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2879 __ subq(rsp, 8); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2880 __ movdbl(Address(rsp, 0), xmm0); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2881 __ fld_d(Address(rsp, 0)); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2882 __ trigfunc('s'); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2883 __ fstp_d(Address(rsp, 0)); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2884 __ movdbl(xmm0, Address(rsp, 0)); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2885 __ addq(rsp, 8); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2886 __ ret(0); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2887 } |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2888 { |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2889 StubCodeMark mark(this, "StubRoutines", "cos"); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2890 StubRoutines::_intrinsic_cos = (double (*)(double)) __ pc(); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2891 |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2892 __ subq(rsp, 8); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2893 __ movdbl(Address(rsp, 0), xmm0); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2894 __ fld_d(Address(rsp, 0)); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2895 __ trigfunc('c'); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2896 __ fstp_d(Address(rsp, 0)); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2897 __ movdbl(xmm0, Address(rsp, 0)); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2898 __ addq(rsp, 8); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2899 __ ret(0); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2900 } |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2901 { |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2902 StubCodeMark mark(this, "StubRoutines", "tan"); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2903 StubRoutines::_intrinsic_tan = (double (*)(double)) __ pc(); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2904 |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2905 __ subq(rsp, 8); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2906 __ movdbl(Address(rsp, 0), xmm0); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2907 __ fld_d(Address(rsp, 0)); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2908 __ trigfunc('t'); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2909 __ fstp_d(Address(rsp, 0)); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2910 __ movdbl(xmm0, Address(rsp, 0)); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2911 __ addq(rsp, 8); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2912 __ ret(0); |
|
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2913 } |
|
6084
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2914 { |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2915 StubCodeMark mark(this, "StubRoutines", "exp"); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2916 StubRoutines::_intrinsic_exp = (double (*)(double)) __ pc(); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2917 |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2918 __ subq(rsp, 8); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2919 __ movdbl(Address(rsp, 0), xmm0); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2920 __ fld_d(Address(rsp, 0)); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2921 __ exp_with_fallback(0); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2922 __ fstp_d(Address(rsp, 0)); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2923 __ movdbl(xmm0, Address(rsp, 0)); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2924 __ addq(rsp, 8); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2925 __ ret(0); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2926 } |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2927 { |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2928 StubCodeMark mark(this, "StubRoutines", "pow"); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2929 StubRoutines::_intrinsic_pow = (double (*)(double,double)) __ pc(); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2930 |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2931 __ subq(rsp, 8); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2932 __ movdbl(Address(rsp, 0), xmm1); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2933 __ fld_d(Address(rsp, 0)); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2934 __ movdbl(Address(rsp, 0), xmm0); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2935 __ fld_d(Address(rsp, 0)); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2936 __ pow_with_fallback(0); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2937 __ fstp_d(Address(rsp, 0)); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2938 __ movdbl(xmm0, Address(rsp, 0)); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2939 __ addq(rsp, 8); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2940 __ ret(0); |
|
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2941 } |
|
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2942 } |
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2943 |
| 0 | 2944 #undef __ |
| 2945 #define __ masm-> | |
| 2946 | |
| 2947 // Continuation point for throwing of implicit exceptions that are | |
| 2948 // not handled in the current activation. Fabricates an exception | |
| 2949 // oop and initiates normal exception dispatching in this | |
| 2950 // frame. Since we need to preserve callee-saved values (currently | |
| 2951 // only for C2, but done for C1 as well) we need a callee-saved oop | |
| 2952 // map and therefore have to make these stubs into RuntimeStubs | |
| 2953 // rather than BufferBlobs. If the compiler needs all registers to | |
| 2954 // be preserved between the fault point and the exception handler | |
| 2955 // then it must assume responsibility for that in | |
| 2956 // AbstractCompiler::continuation_for_implicit_null_exception or | |
| 2957 // continuation_for_implicit_division_by_zero_exception. All other | |
| 2958 // implicit exceptions (e.g., NullPointerException or | |
| 2959 // AbstractMethodError on entry) are either at call sites or | |
| 2960 // otherwise assume that stack unwinding will be initiated, so | |
| 2961 // caller saved registers were assumed volatile in the compiler. | |
| 2962 address generate_throw_exception(const char* name, | |
| 2963 address runtime_entry, | |
|
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2964 Register arg1 = noreg, |
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2965 Register arg2 = noreg) { |
| 0 | 2966 // Information about frame layout at time of blocking runtime call. |
| 2967 // Note that we only have to preserve callee-saved registers since | |
| 2968 // the compilers are responsible for supplying a continuation point | |
| 2969 // if they expect all registers to be preserved. | |
| 2970 enum layout { | |
| 2971 rbp_off = frame::arg_reg_save_area_bytes/BytesPerInt, | |
| 2972 rbp_off2, | |
| 2973 return_off, | |
| 2974 return_off2, | |
| 2975 framesize // inclusive of return address | |
| 2976 }; | |
| 2977 | |
| 2978 int insts_size = 512; | |
| 2979 int locs_size = 64; | |
| 2980 | |
| 2981 CodeBuffer code(name, insts_size, locs_size); | |
| 2982 OopMapSet* oop_maps = new OopMapSet(); | |
| 2983 MacroAssembler* masm = new MacroAssembler(&code); | |
| 2984 | |
| 2985 address start = __ pc(); | |
| 2986 | |
| 2987 // This is an inlined and slightly modified version of call_VM | |
| 2988 // which has the ability to fetch the return PC out of | |
| 2989 // thread-local storage and also sets up last_Java_sp slightly | |
| 2990 // differently than the real call_VM | |
| 2991 | |
| 2992 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
| 2993 | |
| 2994 assert(is_even(framesize/2), "sp not 16-byte aligned"); | |
| 2995 | |
| 2996 // return address and rbp are already in place | |
| 304 | 2997 __ subptr(rsp, (framesize-4) << LogBytesPerInt); // prolog |
| 0 | 2998 |
| 2999 int frame_complete = __ pc() - start; | |
| 3000 | |
| 3001 // Set up last_Java_sp and last_Java_fp | |
|
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3002 address the_pc = __ pc(); |
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3003 __ set_last_Java_frame(rsp, rbp, the_pc); |
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3004 __ andptr(rsp, -(StackAlignmentInBytes)); // Align stack |
| 0 | 3005 |
| 3006 // Call runtime | |
|
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3007 if (arg1 != noreg) { |
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3008 assert(arg2 != c_rarg1, "clobbered"); |
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3009 __ movptr(c_rarg1, arg1); |
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3010 } |
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3011 if (arg2 != noreg) { |
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3012 __ movptr(c_rarg2, arg2); |
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3013 } |
| 304 | 3014 __ movptr(c_rarg0, r15_thread); |
| 0 | 3015 BLOCK_COMMENT("call runtime_entry"); |
| 3016 __ call(RuntimeAddress(runtime_entry)); | |
| 3017 | |
| 3018 // Generate oop map | |
| 3019 OopMap* map = new OopMap(framesize, 0); | |
| 3020 | |
|
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3021 oop_maps->add_gc_map(the_pc - start, map); |
| 0 | 3022 |
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3023 __ reset_last_Java_frame(true, true); |
| 0 | 3024 |
| 3025 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
| 3026 | |
| 3027 // check for pending exceptions | |
| 3028 #ifdef ASSERT | |
| 3029 Label L; | |
| 304 | 3030 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), |
| 3031 (int32_t) NULL_WORD); | |
| 0 | 3032 __ jcc(Assembler::notEqual, L); |
| 3033 __ should_not_reach_here(); | |
| 3034 __ bind(L); | |
| 3035 #endif // ASSERT | |
| 3036 __ jump(RuntimeAddress(StubRoutines::forward_exception_entry())); | |
| 3037 | |
| 3038 | |
| 3039 // codeBlob framesize is in words (not VMRegImpl::slot_size) | |
| 3040 RuntimeStub* stub = | |
| 3041 RuntimeStub::new_runtime_stub(name, | |
| 3042 &code, | |
| 3043 frame_complete, | |
| 3044 (framesize >> (LogBytesPerWord - LogBytesPerInt)), | |
| 3045 oop_maps, false); | |
| 3046 return stub->entry_point(); | |
| 3047 } | |
| 3048 | |
| 3049 // Initialization | |
| 3050 void generate_initial() { | |
| 3051 // Generates all stubs and initializes the entry points | |
| 3052 | |
| 3053 // This platform-specific stub is needed by generate_call_stub() | |
| 304 | 3054 StubRoutines::x86::_mxcsr_std = generate_fp_mask("mxcsr_std", 0x0000000000001F80); |
| 0 | 3055 |
| 3056 // entry points that exist in all platforms Note: This is code | |
| 3057 // that could be shared among different platforms - however the | |
| 3058 // benefit seems to be smaller than the disadvantage of having a | |
| 3059 // much more complicated generator structure. See also comment in | |
| 3060 // stubRoutines.hpp. | |
| 3061 | |
| 3062 StubRoutines::_forward_exception_entry = generate_forward_exception(); | |
| 3063 | |
| 3064 StubRoutines::_call_stub_entry = | |
| 3065 generate_call_stub(StubRoutines::_call_stub_return_address); | |
| 3066 | |
| 3067 // is referenced by megamorphic call | |
| 3068 StubRoutines::_catch_exception_entry = generate_catch_exception(); | |
| 3069 | |
| 3070 // atomic calls | |
| 3071 StubRoutines::_atomic_xchg_entry = generate_atomic_xchg(); | |
| 3072 StubRoutines::_atomic_xchg_ptr_entry = generate_atomic_xchg_ptr(); | |
| 3073 StubRoutines::_atomic_cmpxchg_entry = generate_atomic_cmpxchg(); | |
| 3074 StubRoutines::_atomic_cmpxchg_long_entry = generate_atomic_cmpxchg_long(); | |
| 3075 StubRoutines::_atomic_add_entry = generate_atomic_add(); | |
| 3076 StubRoutines::_atomic_add_ptr_entry = generate_atomic_add_ptr(); | |
| 3077 StubRoutines::_fence_entry = generate_orderaccess_fence(); | |
| 3078 | |
| 3079 StubRoutines::_handler_for_unsafe_access_entry = | |
| 3080 generate_handler_for_unsafe_access(); | |
| 3081 | |
| 3082 // platform dependent | |
| 304 | 3083 StubRoutines::x86::_get_previous_fp_entry = generate_get_previous_fp(); |
|
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3084 StubRoutines::x86::_get_previous_sp_entry = generate_get_previous_sp(); |
| 304 | 3085 |
| 3086 StubRoutines::x86::_verify_mxcsr_entry = generate_verify_mxcsr(); | |
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3087 |
| 4743 | 3088 // Build this early so it's available for the interpreter. |
| 3089 StubRoutines::_throw_StackOverflowError_entry = | |
| 3090 generate_throw_exception("StackOverflowError throw_exception", | |
| 3091 CAST_FROM_FN_PTR(address, | |
| 3092 SharedRuntime:: | |
| 3093 throw_StackOverflowError)); | |
| 0 | 3094 } |
| 3095 | |
| 3096 void generate_all() { | |
| 3097 // Generates all stubs and initializes the entry points | |
| 3098 | |
| 3099 // These entry points require SharedInfo::stack0 to be set up in | |
| 3100 // non-core builds and need to be relocatable, so they each | |
| 3101 // fabricate a RuntimeStub internally. | |
| 3102 StubRoutines::_throw_AbstractMethodError_entry = | |
| 3103 generate_throw_exception("AbstractMethodError throw_exception", | |
| 3104 CAST_FROM_FN_PTR(address, | |
| 3105 SharedRuntime:: | |
| 3937 | 3106 throw_AbstractMethodError)); |
| 0 | 3107 |
|
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3108 StubRoutines::_throw_IncompatibleClassChangeError_entry = |
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3109 generate_throw_exception("IncompatibleClassChangeError throw_exception", |
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3110 CAST_FROM_FN_PTR(address, |
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3111 SharedRuntime:: |
| 3937 | 3112 throw_IncompatibleClassChangeError)); |
| 0 | 3113 |
| 3114 StubRoutines::_throw_NullPointerException_at_call_entry = | |
| 3115 generate_throw_exception("NullPointerException at call throw_exception", | |
| 3116 CAST_FROM_FN_PTR(address, | |
| 3117 SharedRuntime:: | |
| 3937 | 3118 throw_NullPointerException_at_call)); |
| 0 | 3119 |
| 3120 // entry points that are platform specific | |
| 304 | 3121 StubRoutines::x86::_f2i_fixup = generate_f2i_fixup(); |
| 3122 StubRoutines::x86::_f2l_fixup = generate_f2l_fixup(); | |
| 3123 StubRoutines::x86::_d2i_fixup = generate_d2i_fixup(); | |
| 3124 StubRoutines::x86::_d2l_fixup = generate_d2l_fixup(); | |
| 3125 | |
| 3126 StubRoutines::x86::_float_sign_mask = generate_fp_mask("float_sign_mask", 0x7FFFFFFF7FFFFFFF); | |
| 3127 StubRoutines::x86::_float_sign_flip = generate_fp_mask("float_sign_flip", 0x8000000080000000); | |
| 3128 StubRoutines::x86::_double_sign_mask = generate_fp_mask("double_sign_mask", 0x7FFFFFFFFFFFFFFF); | |
| 3129 StubRoutines::x86::_double_sign_flip = generate_fp_mask("double_sign_flip", 0x8000000000000000); | |
| 0 | 3130 |
| 3131 // support for verify_oop (must happen after universe_init) | |
| 3132 StubRoutines::_verify_oop_subroutine_entry = generate_verify_oop(); | |
| 3133 | |
| 3134 // arraycopy stubs used by compilers | |
| 3135 generate_arraycopy_stubs(); | |
| 1108 | 3136 |
|
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3137 generate_math_stubs(); |
| 0 | 3138 } |
| 3139 | |
| 3140 public: | |
| 3141 StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) { | |
| 3142 if (all) { | |
| 3143 generate_all(); | |
| 3144 } else { | |
| 3145 generate_initial(); | |
| 3146 } | |
| 3147 } | |
| 3148 }; // end class declaration | |
| 3149 | |
| 3150 void StubGenerator_generate(CodeBuffer* code, bool all) { | |
| 3151 StubGenerator g(code, all); | |
| 3152 } |