Mercurial > hg > truffle
annotate src/cpu/x86/vm/stubGenerator_x86_64.cpp @ 3955:86cbe939f0c7
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author | dcubed |
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date | Mon, 19 Sep 2011 12:18:46 -0700 |
parents | c565834fb592 |
children | f08d439fab8c |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2011, 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" | |
31 #include "oops/methodOop.hpp" | |
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 | |
50 #ifdef COMPILER2 | |
51 #include "opto/runtime.hpp" | |
52 #endif | |
0 | 53 |
54 // Declaration and definition of StubGenerator (no .hpp file). | |
55 // For a more detailed description of the stub routine structure | |
56 // see the comment in stubRoutines.hpp | |
57 | |
58 #define __ _masm-> | |
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59 #define TIMES_OOP (UseCompressedOops ? Address::times_4 : Address::times_8) |
304 | 60 #define a__ ((Assembler*)_masm)-> |
0 | 61 |
62 #ifdef PRODUCT | |
63 #define BLOCK_COMMENT(str) /* nothing */ | |
64 #else | |
65 #define BLOCK_COMMENT(str) __ block_comment(str) | |
66 #endif | |
67 | |
68 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") | |
69 const int MXCSR_MASK = 0xFFC0; // Mask out any pending exceptions | |
70 | |
71 // Stub Code definitions | |
72 | |
73 static address handle_unsafe_access() { | |
74 JavaThread* thread = JavaThread::current(); | |
75 address pc = thread->saved_exception_pc(); | |
76 // pc is the instruction which we must emulate | |
77 // doing a no-op is fine: return garbage from the load | |
78 // therefore, compute npc | |
79 address npc = Assembler::locate_next_instruction(pc); | |
80 | |
81 // request an async exception | |
82 thread->set_pending_unsafe_access_error(); | |
83 | |
84 // return address of next instruction to execute | |
85 return npc; | |
86 } | |
87 | |
88 class StubGenerator: public StubCodeGenerator { | |
89 private: | |
90 | |
91 #ifdef PRODUCT | |
92 #define inc_counter_np(counter) (0) | |
93 #else | |
94 void inc_counter_np_(int& counter) { | |
95 __ incrementl(ExternalAddress((address)&counter)); | |
96 } | |
97 #define inc_counter_np(counter) \ | |
98 BLOCK_COMMENT("inc_counter " #counter); \ | |
99 inc_counter_np_(counter); | |
100 #endif | |
101 | |
102 // Call stubs are used to call Java from C | |
103 // | |
104 // Linux Arguments: | |
105 // c_rarg0: call wrapper address address | |
106 // c_rarg1: result address | |
107 // c_rarg2: result type BasicType | |
108 // c_rarg3: method methodOop | |
109 // c_rarg4: (interpreter) entry point address | |
110 // c_rarg5: parameters intptr_t* | |
111 // 16(rbp): parameter size (in words) int | |
112 // 24(rbp): thread Thread* | |
113 // | |
114 // [ return_from_Java ] <--- rsp | |
115 // [ argument word n ] | |
116 // ... | |
117 // -12 [ argument word 1 ] | |
118 // -11 [ saved r15 ] <--- rsp_after_call | |
119 // -10 [ saved r14 ] | |
120 // -9 [ saved r13 ] | |
121 // -8 [ saved r12 ] | |
122 // -7 [ saved rbx ] | |
123 // -6 [ call wrapper ] | |
124 // -5 [ result ] | |
125 // -4 [ result type ] | |
126 // -3 [ method ] | |
127 // -2 [ entry point ] | |
128 // -1 [ parameters ] | |
129 // 0 [ saved rbp ] <--- rbp | |
130 // 1 [ return address ] | |
131 // 2 [ parameter size ] | |
132 // 3 [ thread ] | |
133 // | |
134 // Windows Arguments: | |
135 // c_rarg0: call wrapper address address | |
136 // c_rarg1: result address | |
137 // c_rarg2: result type BasicType | |
138 // c_rarg3: method methodOop | |
139 // 48(rbp): (interpreter) entry point address | |
140 // 56(rbp): parameters intptr_t* | |
141 // 64(rbp): parameter size (in words) int | |
142 // 72(rbp): thread Thread* | |
143 // | |
144 // [ return_from_Java ] <--- rsp | |
145 // [ argument word n ] | |
146 // ... | |
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147 // -28 [ argument word 1 ] |
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148 // -27 [ saved xmm15 ] <--- rsp_after_call |
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149 // [ saved xmm7-xmm14 ] |
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150 // -9 [ saved xmm6 ] (each xmm register takes 2 slots) |
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151 // -7 [ saved r15 ] |
0 | 152 // -6 [ saved r14 ] |
153 // -5 [ saved r13 ] | |
154 // -4 [ saved r12 ] | |
155 // -3 [ saved rdi ] | |
156 // -2 [ saved rsi ] | |
157 // -1 [ saved rbx ] | |
158 // 0 [ saved rbp ] <--- rbp | |
159 // 1 [ return address ] | |
160 // 2 [ call wrapper ] | |
161 // 3 [ result ] | |
162 // 4 [ result type ] | |
163 // 5 [ method ] | |
164 // 6 [ entry point ] | |
165 // 7 [ parameters ] | |
166 // 8 [ parameter size ] | |
167 // 9 [ thread ] | |
168 // | |
169 // Windows reserves the callers stack space for arguments 1-4. | |
170 // We spill c_rarg0-c_rarg3 to this space. | |
171 | |
172 // Call stub stack layout word offsets from rbp | |
173 enum call_stub_layout { | |
174 #ifdef _WIN64 | |
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175 xmm_save_first = 6, // save from xmm6 |
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176 xmm_save_last = 15, // to xmm15 |
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177 xmm_save_base = -9, |
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178 rsp_after_call_off = xmm_save_base - 2 * (xmm_save_last - xmm_save_first), // -27 |
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179 r15_off = -7, |
0 | 180 r14_off = -6, |
181 r13_off = -5, | |
182 r12_off = -4, | |
183 rdi_off = -3, | |
184 rsi_off = -2, | |
185 rbx_off = -1, | |
186 rbp_off = 0, | |
187 retaddr_off = 1, | |
188 call_wrapper_off = 2, | |
189 result_off = 3, | |
190 result_type_off = 4, | |
191 method_off = 5, | |
192 entry_point_off = 6, | |
193 parameters_off = 7, | |
194 parameter_size_off = 8, | |
195 thread_off = 9 | |
196 #else | |
197 rsp_after_call_off = -12, | |
198 mxcsr_off = rsp_after_call_off, | |
199 r15_off = -11, | |
200 r14_off = -10, | |
201 r13_off = -9, | |
202 r12_off = -8, | |
203 rbx_off = -7, | |
204 call_wrapper_off = -6, | |
205 result_off = -5, | |
206 result_type_off = -4, | |
207 method_off = -3, | |
208 entry_point_off = -2, | |
209 parameters_off = -1, | |
210 rbp_off = 0, | |
211 retaddr_off = 1, | |
212 parameter_size_off = 2, | |
213 thread_off = 3 | |
214 #endif | |
215 }; | |
216 | |
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217 #ifdef _WIN64 |
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218 Address xmm_save(int reg) { |
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219 assert(reg >= xmm_save_first && reg <= xmm_save_last, "XMM register number out of range"); |
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220 return Address(rbp, (xmm_save_base - (reg - xmm_save_first) * 2) * wordSize); |
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221 } |
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222 #endif |
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223 |
0 | 224 address generate_call_stub(address& return_address) { |
225 assert((int)frame::entry_frame_after_call_words == -(int)rsp_after_call_off + 1 && | |
226 (int)frame::entry_frame_call_wrapper_offset == (int)call_wrapper_off, | |
227 "adjust this code"); | |
228 StubCodeMark mark(this, "StubRoutines", "call_stub"); | |
229 address start = __ pc(); | |
230 | |
231 // same as in generate_catch_exception()! | |
232 const Address rsp_after_call(rbp, rsp_after_call_off * wordSize); | |
233 | |
234 const Address call_wrapper (rbp, call_wrapper_off * wordSize); | |
235 const Address result (rbp, result_off * wordSize); | |
236 const Address result_type (rbp, result_type_off * wordSize); | |
237 const Address method (rbp, method_off * wordSize); | |
238 const Address entry_point (rbp, entry_point_off * wordSize); | |
239 const Address parameters (rbp, parameters_off * wordSize); | |
240 const Address parameter_size(rbp, parameter_size_off * wordSize); | |
241 | |
242 // same as in generate_catch_exception()! | |
243 const Address thread (rbp, thread_off * wordSize); | |
244 | |
245 const Address r15_save(rbp, r15_off * wordSize); | |
246 const Address r14_save(rbp, r14_off * wordSize); | |
247 const Address r13_save(rbp, r13_off * wordSize); | |
248 const Address r12_save(rbp, r12_off * wordSize); | |
249 const Address rbx_save(rbp, rbx_off * wordSize); | |
250 | |
251 // stub code | |
252 __ enter(); | |
304 | 253 __ subptr(rsp, -rsp_after_call_off * wordSize); |
0 | 254 |
255 // save register parameters | |
256 #ifndef _WIN64 | |
304 | 257 __ movptr(parameters, c_rarg5); // parameters |
258 __ movptr(entry_point, c_rarg4); // entry_point | |
0 | 259 #endif |
260 | |
304 | 261 __ movptr(method, c_rarg3); // method |
262 __ movl(result_type, c_rarg2); // result type | |
263 __ movptr(result, c_rarg1); // result | |
264 __ movptr(call_wrapper, c_rarg0); // call wrapper | |
0 | 265 |
266 // save regs belonging to calling function | |
304 | 267 __ movptr(rbx_save, rbx); |
268 __ movptr(r12_save, r12); | |
269 __ movptr(r13_save, r13); | |
270 __ movptr(r14_save, r14); | |
271 __ movptr(r15_save, r15); | |
0 | 272 #ifdef _WIN64 |
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273 for (int i = 6; i <= 15; i++) { |
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274 __ movdqu(xmm_save(i), as_XMMRegister(i)); |
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275 } |
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276 |
0 | 277 const Address rdi_save(rbp, rdi_off * wordSize); |
278 const Address rsi_save(rbp, rsi_off * wordSize); | |
279 | |
304 | 280 __ movptr(rsi_save, rsi); |
281 __ movptr(rdi_save, rdi); | |
0 | 282 #else |
283 const Address mxcsr_save(rbp, mxcsr_off * wordSize); | |
284 { | |
285 Label skip_ldmx; | |
286 __ stmxcsr(mxcsr_save); | |
287 __ movl(rax, mxcsr_save); | |
288 __ andl(rax, MXCSR_MASK); // Only check control and mask bits | |
304 | 289 ExternalAddress mxcsr_std(StubRoutines::x86::mxcsr_std()); |
0 | 290 __ cmp32(rax, mxcsr_std); |
291 __ jcc(Assembler::equal, skip_ldmx); | |
292 __ ldmxcsr(mxcsr_std); | |
293 __ bind(skip_ldmx); | |
294 } | |
295 #endif | |
296 | |
297 // Load up thread register | |
304 | 298 __ movptr(r15_thread, thread); |
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299 __ reinit_heapbase(); |
0 | 300 |
301 #ifdef ASSERT | |
302 // make sure we have no pending exceptions | |
303 { | |
304 Label L; | |
304 | 305 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
0 | 306 __ jcc(Assembler::equal, L); |
307 __ stop("StubRoutines::call_stub: entered with pending exception"); | |
308 __ bind(L); | |
309 } | |
310 #endif | |
311 | |
312 // pass parameters if any | |
313 BLOCK_COMMENT("pass parameters if any"); | |
314 Label parameters_done; | |
315 __ movl(c_rarg3, parameter_size); | |
316 __ testl(c_rarg3, c_rarg3); | |
317 __ jcc(Assembler::zero, parameters_done); | |
318 | |
319 Label loop; | |
304 | 320 __ movptr(c_rarg2, parameters); // parameter pointer |
321 __ movl(c_rarg1, c_rarg3); // parameter counter is in c_rarg1 | |
0 | 322 __ BIND(loop); |
304 | 323 __ movptr(rax, Address(c_rarg2, 0));// get parameter |
324 __ addptr(c_rarg2, wordSize); // advance to next parameter | |
325 __ decrementl(c_rarg1); // decrement counter | |
326 __ push(rax); // pass parameter | |
0 | 327 __ jcc(Assembler::notZero, loop); |
328 | |
329 // call Java function | |
330 __ BIND(parameters_done); | |
304 | 331 __ movptr(rbx, method); // get methodOop |
332 __ movptr(c_rarg1, entry_point); // get entry_point | |
333 __ mov(r13, rsp); // set sender sp | |
0 | 334 BLOCK_COMMENT("call Java function"); |
335 __ call(c_rarg1); | |
336 | |
337 BLOCK_COMMENT("call_stub_return_address:"); | |
338 return_address = __ pc(); | |
339 | |
340 // store result depending on type (everything that is not | |
341 // T_OBJECT, T_LONG, T_FLOAT or T_DOUBLE is treated as T_INT) | |
304 | 342 __ movptr(c_rarg0, result); |
0 | 343 Label is_long, is_float, is_double, exit; |
344 __ movl(c_rarg1, result_type); | |
345 __ cmpl(c_rarg1, T_OBJECT); | |
346 __ jcc(Assembler::equal, is_long); | |
347 __ cmpl(c_rarg1, T_LONG); | |
348 __ jcc(Assembler::equal, is_long); | |
349 __ cmpl(c_rarg1, T_FLOAT); | |
350 __ jcc(Assembler::equal, is_float); | |
351 __ cmpl(c_rarg1, T_DOUBLE); | |
352 __ jcc(Assembler::equal, is_double); | |
353 | |
354 // handle T_INT case | |
355 __ movl(Address(c_rarg0, 0), rax); | |
356 | |
357 __ BIND(exit); | |
358 | |
359 // pop parameters | |
304 | 360 __ lea(rsp, rsp_after_call); |
0 | 361 |
362 #ifdef ASSERT | |
363 // verify that threads correspond | |
364 { | |
365 Label L, S; | |
304 | 366 __ cmpptr(r15_thread, thread); |
0 | 367 __ jcc(Assembler::notEqual, S); |
368 __ get_thread(rbx); | |
304 | 369 __ cmpptr(r15_thread, rbx); |
0 | 370 __ jcc(Assembler::equal, L); |
371 __ bind(S); | |
372 __ jcc(Assembler::equal, L); | |
373 __ stop("StubRoutines::call_stub: threads must correspond"); | |
374 __ bind(L); | |
375 } | |
376 #endif | |
377 | |
378 // restore regs belonging to calling function | |
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379 #ifdef _WIN64 |
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380 for (int i = 15; i >= 6; i--) { |
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381 __ movdqu(as_XMMRegister(i), xmm_save(i)); |
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382 } |
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383 #endif |
304 | 384 __ movptr(r15, r15_save); |
385 __ movptr(r14, r14_save); | |
386 __ movptr(r13, r13_save); | |
387 __ movptr(r12, r12_save); | |
388 __ movptr(rbx, rbx_save); | |
0 | 389 |
390 #ifdef _WIN64 | |
304 | 391 __ movptr(rdi, rdi_save); |
392 __ movptr(rsi, rsi_save); | |
0 | 393 #else |
394 __ ldmxcsr(mxcsr_save); | |
395 #endif | |
396 | |
397 // restore rsp | |
304 | 398 __ addptr(rsp, -rsp_after_call_off * wordSize); |
0 | 399 |
400 // return | |
304 | 401 __ pop(rbp); |
0 | 402 __ ret(0); |
403 | |
404 // handle return types different from T_INT | |
405 __ BIND(is_long); | |
406 __ movq(Address(c_rarg0, 0), rax); | |
407 __ jmp(exit); | |
408 | |
409 __ BIND(is_float); | |
410 __ movflt(Address(c_rarg0, 0), xmm0); | |
411 __ jmp(exit); | |
412 | |
413 __ BIND(is_double); | |
414 __ movdbl(Address(c_rarg0, 0), xmm0); | |
415 __ jmp(exit); | |
416 | |
417 return start; | |
418 } | |
419 | |
420 // Return point for a Java call if there's an exception thrown in | |
421 // Java code. The exception is caught and transformed into a | |
422 // pending exception stored in JavaThread that can be tested from | |
423 // within the VM. | |
424 // | |
425 // Note: Usually the parameters are removed by the callee. In case | |
426 // of an exception crossing an activation frame boundary, that is | |
427 // not the case if the callee is compiled code => need to setup the | |
428 // rsp. | |
429 // | |
430 // rax: exception oop | |
431 | |
432 address generate_catch_exception() { | |
433 StubCodeMark mark(this, "StubRoutines", "catch_exception"); | |
434 address start = __ pc(); | |
435 | |
436 // same as in generate_call_stub(): | |
437 const Address rsp_after_call(rbp, rsp_after_call_off * wordSize); | |
438 const Address thread (rbp, thread_off * wordSize); | |
439 | |
440 #ifdef ASSERT | |
441 // verify that threads correspond | |
442 { | |
443 Label L, S; | |
304 | 444 __ cmpptr(r15_thread, thread); |
0 | 445 __ jcc(Assembler::notEqual, S); |
446 __ get_thread(rbx); | |
304 | 447 __ cmpptr(r15_thread, rbx); |
0 | 448 __ jcc(Assembler::equal, L); |
449 __ bind(S); | |
450 __ stop("StubRoutines::catch_exception: threads must correspond"); | |
451 __ bind(L); | |
452 } | |
453 #endif | |
454 | |
455 // set pending exception | |
456 __ verify_oop(rax); | |
457 | |
304 | 458 __ movptr(Address(r15_thread, Thread::pending_exception_offset()), rax); |
0 | 459 __ lea(rscratch1, ExternalAddress((address)__FILE__)); |
304 | 460 __ movptr(Address(r15_thread, Thread::exception_file_offset()), rscratch1); |
0 | 461 __ movl(Address(r15_thread, Thread::exception_line_offset()), (int) __LINE__); |
462 | |
463 // complete return to VM | |
464 assert(StubRoutines::_call_stub_return_address != NULL, | |
465 "_call_stub_return_address must have been generated before"); | |
466 __ jump(RuntimeAddress(StubRoutines::_call_stub_return_address)); | |
467 | |
468 return start; | |
469 } | |
470 | |
471 // Continuation point for runtime calls returning with a pending | |
472 // exception. The pending exception check happened in the runtime | |
473 // or native call stub. The pending exception in Thread is | |
474 // converted into a Java-level exception. | |
475 // | |
476 // Contract with Java-level exception handlers: | |
477 // rax: exception | |
478 // rdx: throwing pc | |
479 // | |
480 // NOTE: At entry of this stub, exception-pc must be on stack !! | |
481 | |
482 address generate_forward_exception() { | |
483 StubCodeMark mark(this, "StubRoutines", "forward exception"); | |
484 address start = __ pc(); | |
485 | |
486 // Upon entry, the sp points to the return address returning into | |
487 // Java (interpreted or compiled) code; i.e., the return address | |
488 // becomes the throwing pc. | |
489 // | |
490 // Arguments pushed before the runtime call are still on the stack | |
491 // but the exception handler will reset the stack pointer -> | |
492 // ignore them. A potential result in registers can be ignored as | |
493 // well. | |
494 | |
495 #ifdef ASSERT | |
496 // make sure this code is only executed if there is a pending exception | |
497 { | |
498 Label L; | |
304 | 499 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL); |
0 | 500 __ jcc(Assembler::notEqual, L); |
501 __ stop("StubRoutines::forward exception: no pending exception (1)"); | |
502 __ bind(L); | |
503 } | |
504 #endif | |
505 | |
506 // compute exception handler into rbx | |
304 | 507 __ movptr(c_rarg0, Address(rsp, 0)); |
0 | 508 BLOCK_COMMENT("call exception_handler_for_return_address"); |
509 __ call_VM_leaf(CAST_FROM_FN_PTR(address, | |
510 SharedRuntime::exception_handler_for_return_address), | |
1295 | 511 r15_thread, c_rarg0); |
304 | 512 __ mov(rbx, rax); |
0 | 513 |
514 // setup rax & rdx, remove return address & clear pending exception | |
304 | 515 __ pop(rdx); |
516 __ movptr(rax, Address(r15_thread, Thread::pending_exception_offset())); | |
512
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517 __ movptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
0 | 518 |
519 #ifdef ASSERT | |
520 // make sure exception is set | |
521 { | |
522 Label L; | |
304 | 523 __ testptr(rax, rax); |
0 | 524 __ jcc(Assembler::notEqual, L); |
525 __ stop("StubRoutines::forward exception: no pending exception (2)"); | |
526 __ bind(L); | |
527 } | |
528 #endif | |
529 | |
530 // continue at exception handler (return address removed) | |
531 // rax: exception | |
532 // rbx: exception handler | |
533 // rdx: throwing pc | |
534 __ verify_oop(rax); | |
535 __ jmp(rbx); | |
536 | |
537 return start; | |
538 } | |
539 | |
540 // Support for jint atomic::xchg(jint exchange_value, volatile jint* dest) | |
541 // | |
542 // Arguments : | |
543 // c_rarg0: exchange_value | |
544 // c_rarg0: dest | |
545 // | |
546 // Result: | |
547 // *dest <- ex, return (orig *dest) | |
548 address generate_atomic_xchg() { | |
549 StubCodeMark mark(this, "StubRoutines", "atomic_xchg"); | |
550 address start = __ pc(); | |
551 | |
552 __ movl(rax, c_rarg0); // Copy to eax we need a return value anyhow | |
553 __ xchgl(rax, Address(c_rarg1, 0)); // automatic LOCK | |
554 __ ret(0); | |
555 | |
556 return start; | |
557 } | |
558 | |
559 // Support for intptr_t atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) | |
560 // | |
561 // Arguments : | |
562 // c_rarg0: exchange_value | |
563 // c_rarg1: dest | |
564 // | |
565 // Result: | |
566 // *dest <- ex, return (orig *dest) | |
567 address generate_atomic_xchg_ptr() { | |
568 StubCodeMark mark(this, "StubRoutines", "atomic_xchg_ptr"); | |
569 address start = __ pc(); | |
570 | |
304 | 571 __ movptr(rax, c_rarg0); // Copy to eax we need a return value anyhow |
572 __ xchgptr(rax, Address(c_rarg1, 0)); // automatic LOCK | |
0 | 573 __ ret(0); |
574 | |
575 return start; | |
576 } | |
577 | |
578 // Support for jint atomic::atomic_cmpxchg(jint exchange_value, volatile jint* dest, | |
579 // jint compare_value) | |
580 // | |
581 // Arguments : | |
582 // c_rarg0: exchange_value | |
583 // c_rarg1: dest | |
584 // c_rarg2: compare_value | |
585 // | |
586 // Result: | |
587 // if ( compare_value == *dest ) { | |
588 // *dest = exchange_value | |
589 // return compare_value; | |
590 // else | |
591 // return *dest; | |
592 address generate_atomic_cmpxchg() { | |
593 StubCodeMark mark(this, "StubRoutines", "atomic_cmpxchg"); | |
594 address start = __ pc(); | |
595 | |
596 __ movl(rax, c_rarg2); | |
597 if ( os::is_MP() ) __ lock(); | |
598 __ cmpxchgl(c_rarg0, Address(c_rarg1, 0)); | |
599 __ ret(0); | |
600 | |
601 return start; | |
602 } | |
603 | |
604 // Support for jint atomic::atomic_cmpxchg_long(jlong exchange_value, | |
605 // volatile jlong* dest, | |
606 // jlong compare_value) | |
607 // Arguments : | |
608 // c_rarg0: exchange_value | |
609 // c_rarg1: dest | |
610 // c_rarg2: compare_value | |
611 // | |
612 // Result: | |
613 // if ( compare_value == *dest ) { | |
614 // *dest = exchange_value | |
615 // return compare_value; | |
616 // else | |
617 // return *dest; | |
618 address generate_atomic_cmpxchg_long() { | |
619 StubCodeMark mark(this, "StubRoutines", "atomic_cmpxchg_long"); | |
620 address start = __ pc(); | |
621 | |
622 __ movq(rax, c_rarg2); | |
623 if ( os::is_MP() ) __ lock(); | |
624 __ cmpxchgq(c_rarg0, Address(c_rarg1, 0)); | |
625 __ ret(0); | |
626 | |
627 return start; | |
628 } | |
629 | |
630 // Support for jint atomic::add(jint add_value, volatile jint* dest) | |
631 // | |
632 // Arguments : | |
633 // c_rarg0: add_value | |
634 // c_rarg1: dest | |
635 // | |
636 // Result: | |
637 // *dest += add_value | |
638 // return *dest; | |
639 address generate_atomic_add() { | |
640 StubCodeMark mark(this, "StubRoutines", "atomic_add"); | |
641 address start = __ pc(); | |
642 | |
643 __ movl(rax, c_rarg0); | |
644 if ( os::is_MP() ) __ lock(); | |
645 __ xaddl(Address(c_rarg1, 0), c_rarg0); | |
646 __ addl(rax, c_rarg0); | |
647 __ ret(0); | |
648 | |
649 return start; | |
650 } | |
651 | |
652 // Support for intptr_t atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) | |
653 // | |
654 // Arguments : | |
655 // c_rarg0: add_value | |
656 // c_rarg1: dest | |
657 // | |
658 // Result: | |
659 // *dest += add_value | |
660 // return *dest; | |
661 address generate_atomic_add_ptr() { | |
662 StubCodeMark mark(this, "StubRoutines", "atomic_add_ptr"); | |
663 address start = __ pc(); | |
664 | |
304 | 665 __ movptr(rax, c_rarg0); // Copy to eax we need a return value anyhow |
0 | 666 if ( os::is_MP() ) __ lock(); |
304 | 667 __ xaddptr(Address(c_rarg1, 0), c_rarg0); |
668 __ addptr(rax, c_rarg0); | |
0 | 669 __ ret(0); |
670 | |
671 return start; | |
672 } | |
673 | |
674 // Support for intptr_t OrderAccess::fence() | |
675 // | |
676 // Arguments : | |
677 // | |
678 // Result: | |
679 address generate_orderaccess_fence() { | |
680 StubCodeMark mark(this, "StubRoutines", "orderaccess_fence"); | |
681 address start = __ pc(); | |
671
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682 __ membar(Assembler::StoreLoad); |
0 | 683 __ ret(0); |
684 | |
685 return start; | |
686 } | |
687 | |
688 // Support for intptr_t get_previous_fp() | |
689 // | |
690 // This routine is used to find the previous frame pointer for the | |
691 // caller (current_frame_guess). This is used as part of debugging | |
692 // ps() is seemingly lost trying to find frames. | |
693 // This code assumes that caller current_frame_guess) has a frame. | |
694 address generate_get_previous_fp() { | |
695 StubCodeMark mark(this, "StubRoutines", "get_previous_fp"); | |
696 const Address old_fp(rbp, 0); | |
697 const Address older_fp(rax, 0); | |
698 address start = __ pc(); | |
699 | |
700 __ enter(); | |
304 | 701 __ movptr(rax, old_fp); // callers fp |
702 __ movptr(rax, older_fp); // the frame for ps() | |
703 __ pop(rbp); | |
0 | 704 __ ret(0); |
705 | |
706 return start; | |
707 } | |
708 | |
709 //---------------------------------------------------------------------------------------------------- | |
710 // Support for void verify_mxcsr() | |
711 // | |
712 // This routine is used with -Xcheck:jni to verify that native | |
713 // JNI code does not return to Java code without restoring the | |
714 // MXCSR register to our expected state. | |
715 | |
716 address generate_verify_mxcsr() { | |
717 StubCodeMark mark(this, "StubRoutines", "verify_mxcsr"); | |
718 address start = __ pc(); | |
719 | |
720 const Address mxcsr_save(rsp, 0); | |
721 | |
722 if (CheckJNICalls) { | |
723 Label ok_ret; | |
304 | 724 __ push(rax); |
725 __ subptr(rsp, wordSize); // allocate a temp location | |
0 | 726 __ stmxcsr(mxcsr_save); |
727 __ movl(rax, mxcsr_save); | |
728 __ andl(rax, MXCSR_MASK); // Only check control and mask bits | |
304 | 729 __ cmpl(rax, *(int *)(StubRoutines::x86::mxcsr_std())); |
0 | 730 __ jcc(Assembler::equal, ok_ret); |
731 | |
732 __ warn("MXCSR changed by native JNI code, use -XX:+RestoreMXCSROnJNICall"); | |
733 | |
304 | 734 __ ldmxcsr(ExternalAddress(StubRoutines::x86::mxcsr_std())); |
0 | 735 |
736 __ bind(ok_ret); | |
304 | 737 __ addptr(rsp, wordSize); |
738 __ pop(rax); | |
0 | 739 } |
740 | |
741 __ ret(0); | |
742 | |
743 return start; | |
744 } | |
745 | |
746 address generate_f2i_fixup() { | |
747 StubCodeMark mark(this, "StubRoutines", "f2i_fixup"); | |
748 Address inout(rsp, 5 * wordSize); // return address + 4 saves | |
749 | |
750 address start = __ pc(); | |
751 | |
752 Label L; | |
753 | |
304 | 754 __ push(rax); |
755 __ push(c_rarg3); | |
756 __ push(c_rarg2); | |
757 __ push(c_rarg1); | |
0 | 758 |
759 __ movl(rax, 0x7f800000); | |
760 __ xorl(c_rarg3, c_rarg3); | |
761 __ movl(c_rarg2, inout); | |
762 __ movl(c_rarg1, c_rarg2); | |
763 __ andl(c_rarg1, 0x7fffffff); | |
764 __ cmpl(rax, c_rarg1); // NaN? -> 0 | |
765 __ jcc(Assembler::negative, L); | |
766 __ testl(c_rarg2, c_rarg2); // signed ? min_jint : max_jint | |
767 __ movl(c_rarg3, 0x80000000); | |
768 __ movl(rax, 0x7fffffff); | |
769 __ cmovl(Assembler::positive, c_rarg3, rax); | |
770 | |
771 __ bind(L); | |
304 | 772 __ movptr(inout, c_rarg3); |
773 | |
774 __ pop(c_rarg1); | |
775 __ pop(c_rarg2); | |
776 __ pop(c_rarg3); | |
777 __ pop(rax); | |
0 | 778 |
779 __ ret(0); | |
780 | |
781 return start; | |
782 } | |
783 | |
784 address generate_f2l_fixup() { | |
785 StubCodeMark mark(this, "StubRoutines", "f2l_fixup"); | |
786 Address inout(rsp, 5 * wordSize); // return address + 4 saves | |
787 address start = __ pc(); | |
788 | |
789 Label L; | |
790 | |
304 | 791 __ push(rax); |
792 __ push(c_rarg3); | |
793 __ push(c_rarg2); | |
794 __ push(c_rarg1); | |
0 | 795 |
796 __ movl(rax, 0x7f800000); | |
797 __ xorl(c_rarg3, c_rarg3); | |
798 __ movl(c_rarg2, inout); | |
799 __ movl(c_rarg1, c_rarg2); | |
800 __ andl(c_rarg1, 0x7fffffff); | |
801 __ cmpl(rax, c_rarg1); // NaN? -> 0 | |
802 __ jcc(Assembler::negative, L); | |
803 __ testl(c_rarg2, c_rarg2); // signed ? min_jlong : max_jlong | |
804 __ mov64(c_rarg3, 0x8000000000000000); | |
805 __ mov64(rax, 0x7fffffffffffffff); | |
304 | 806 __ cmov(Assembler::positive, c_rarg3, rax); |
0 | 807 |
808 __ bind(L); | |
304 | 809 __ movptr(inout, c_rarg3); |
810 | |
811 __ pop(c_rarg1); | |
812 __ pop(c_rarg2); | |
813 __ pop(c_rarg3); | |
814 __ pop(rax); | |
0 | 815 |
816 __ ret(0); | |
817 | |
818 return start; | |
819 } | |
820 | |
821 address generate_d2i_fixup() { | |
822 StubCodeMark mark(this, "StubRoutines", "d2i_fixup"); | |
823 Address inout(rsp, 6 * wordSize); // return address + 5 saves | |
824 | |
825 address start = __ pc(); | |
826 | |
827 Label L; | |
828 | |
304 | 829 __ push(rax); |
830 __ push(c_rarg3); | |
831 __ push(c_rarg2); | |
832 __ push(c_rarg1); | |
833 __ push(c_rarg0); | |
0 | 834 |
835 __ movl(rax, 0x7ff00000); | |
836 __ movq(c_rarg2, inout); | |
837 __ movl(c_rarg3, c_rarg2); | |
304 | 838 __ mov(c_rarg1, c_rarg2); |
839 __ mov(c_rarg0, c_rarg2); | |
0 | 840 __ negl(c_rarg3); |
304 | 841 __ shrptr(c_rarg1, 0x20); |
0 | 842 __ orl(c_rarg3, c_rarg2); |
843 __ andl(c_rarg1, 0x7fffffff); | |
844 __ xorl(c_rarg2, c_rarg2); | |
845 __ shrl(c_rarg3, 0x1f); | |
846 __ orl(c_rarg1, c_rarg3); | |
847 __ cmpl(rax, c_rarg1); | |
848 __ jcc(Assembler::negative, L); // NaN -> 0 | |
304 | 849 __ testptr(c_rarg0, c_rarg0); // signed ? min_jint : max_jint |
0 | 850 __ movl(c_rarg2, 0x80000000); |
851 __ movl(rax, 0x7fffffff); | |
304 | 852 __ cmov(Assembler::positive, c_rarg2, rax); |
0 | 853 |
854 __ bind(L); | |
304 | 855 __ movptr(inout, c_rarg2); |
856 | |
857 __ pop(c_rarg0); | |
858 __ pop(c_rarg1); | |
859 __ pop(c_rarg2); | |
860 __ pop(c_rarg3); | |
861 __ pop(rax); | |
0 | 862 |
863 __ ret(0); | |
864 | |
865 return start; | |
866 } | |
867 | |
868 address generate_d2l_fixup() { | |
869 StubCodeMark mark(this, "StubRoutines", "d2l_fixup"); | |
870 Address inout(rsp, 6 * wordSize); // return address + 5 saves | |
871 | |
872 address start = __ pc(); | |
873 | |
874 Label L; | |
875 | |
304 | 876 __ push(rax); |
877 __ push(c_rarg3); | |
878 __ push(c_rarg2); | |
879 __ push(c_rarg1); | |
880 __ push(c_rarg0); | |
0 | 881 |
882 __ movl(rax, 0x7ff00000); | |
883 __ movq(c_rarg2, inout); | |
884 __ movl(c_rarg3, c_rarg2); | |
304 | 885 __ mov(c_rarg1, c_rarg2); |
886 __ mov(c_rarg0, c_rarg2); | |
0 | 887 __ negl(c_rarg3); |
304 | 888 __ shrptr(c_rarg1, 0x20); |
0 | 889 __ orl(c_rarg3, c_rarg2); |
890 __ andl(c_rarg1, 0x7fffffff); | |
891 __ xorl(c_rarg2, c_rarg2); | |
892 __ shrl(c_rarg3, 0x1f); | |
893 __ orl(c_rarg1, c_rarg3); | |
894 __ cmpl(rax, c_rarg1); | |
895 __ jcc(Assembler::negative, L); // NaN -> 0 | |
896 __ testq(c_rarg0, c_rarg0); // signed ? min_jlong : max_jlong | |
897 __ mov64(c_rarg2, 0x8000000000000000); | |
898 __ mov64(rax, 0x7fffffffffffffff); | |
899 __ cmovq(Assembler::positive, c_rarg2, rax); | |
900 | |
901 __ bind(L); | |
902 __ movq(inout, c_rarg2); | |
903 | |
304 | 904 __ pop(c_rarg0); |
905 __ pop(c_rarg1); | |
906 __ pop(c_rarg2); | |
907 __ pop(c_rarg3); | |
908 __ pop(rax); | |
0 | 909 |
910 __ ret(0); | |
911 | |
912 return start; | |
913 } | |
914 | |
915 address generate_fp_mask(const char *stub_name, int64_t mask) { | |
1365 | 916 __ align(CodeEntryAlignment); |
0 | 917 StubCodeMark mark(this, "StubRoutines", stub_name); |
918 address start = __ pc(); | |
919 | |
920 __ emit_data64( mask, relocInfo::none ); | |
921 __ emit_data64( mask, relocInfo::none ); | |
922 | |
923 return start; | |
924 } | |
925 | |
926 // The following routine generates a subroutine to throw an | |
927 // asynchronous UnknownError when an unsafe access gets a fault that | |
928 // could not be reasonably prevented by the programmer. (Example: | |
929 // SIGBUS/OBJERR.) | |
930 address generate_handler_for_unsafe_access() { | |
931 StubCodeMark mark(this, "StubRoutines", "handler_for_unsafe_access"); | |
932 address start = __ pc(); | |
933 | |
304 | 934 __ push(0); // hole for return address-to-be |
935 __ pusha(); // push registers | |
0 | 936 Address next_pc(rsp, RegisterImpl::number_of_registers * BytesPerWord); |
937 | |
3937 | 938 // FIXME: this probably needs alignment logic |
939 | |
304 | 940 __ subptr(rsp, frame::arg_reg_save_area_bytes); |
0 | 941 BLOCK_COMMENT("call handle_unsafe_access"); |
942 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, handle_unsafe_access))); | |
304 | 943 __ addptr(rsp, frame::arg_reg_save_area_bytes); |
944 | |
945 __ movptr(next_pc, rax); // stuff next address | |
946 __ popa(); | |
0 | 947 __ ret(0); // jump to next address |
948 | |
949 return start; | |
950 } | |
951 | |
952 // Non-destructive plausibility checks for oops | |
953 // | |
954 // Arguments: | |
955 // all args on stack! | |
956 // | |
957 // Stack after saving c_rarg3: | |
958 // [tos + 0]: saved c_rarg3 | |
959 // [tos + 1]: saved c_rarg2 | |
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960 // [tos + 2]: saved r12 (several TemplateTable methods use it) |
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961 // [tos + 3]: saved flags |
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962 // [tos + 4]: return address |
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963 // * [tos + 5]: error message (char*) |
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964 // * [tos + 6]: object to verify (oop) |
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965 // * [tos + 7]: saved rax - saved by caller and bashed |
1583 | 966 // * [tos + 8]: saved r10 (rscratch1) - saved by caller |
0 | 967 // * = popped on exit |
968 address generate_verify_oop() { | |
969 StubCodeMark mark(this, "StubRoutines", "verify_oop"); | |
970 address start = __ pc(); | |
971 | |
972 Label exit, error; | |
973 | |
304 | 974 __ pushf(); |
0 | 975 __ incrementl(ExternalAddress((address) StubRoutines::verify_oop_count_addr())); |
976 | |
304 | 977 __ push(r12); |
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978 |
0 | 979 // save c_rarg2 and c_rarg3 |
304 | 980 __ push(c_rarg2); |
981 __ push(c_rarg3); | |
0 | 982 |
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983 enum { |
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984 // After previous pushes. |
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985 oop_to_verify = 6 * wordSize, |
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986 saved_rax = 7 * wordSize, |
1583 | 987 saved_r10 = 8 * wordSize, |
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988 |
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989 // Before the call to MacroAssembler::debug(), see below. |
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990 return_addr = 16 * wordSize, |
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991 error_msg = 17 * wordSize |
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992 }; |
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993 |
0 | 994 // get object |
304 | 995 __ movptr(rax, Address(rsp, oop_to_verify)); |
0 | 996 |
997 // make sure object is 'reasonable' | |
304 | 998 __ testptr(rax, rax); |
0 | 999 __ jcc(Assembler::zero, exit); // if obj is NULL it is OK |
1000 // Check if the oop is in the right area of memory | |
304 | 1001 __ movptr(c_rarg2, rax); |
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1002 __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_mask()); |
304 | 1003 __ andptr(c_rarg2, c_rarg3); |
512
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1004 __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_bits()); |
304 | 1005 __ cmpptr(c_rarg2, c_rarg3); |
0 | 1006 __ jcc(Assembler::notZero, error); |
1007 | |
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1008 // set r12 to heapbase for load_klass() |
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1009 __ reinit_heapbase(); |
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1010 |
0 | 1011 // make sure klass is 'reasonable' |
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1012 __ load_klass(rax, rax); // get klass |
304 | 1013 __ testptr(rax, rax); |
0 | 1014 __ jcc(Assembler::zero, error); // if klass is NULL it is broken |
1015 // Check if the klass is in the right area of memory | |
304 | 1016 __ mov(c_rarg2, rax); |
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1017 __ movptr(c_rarg3, (intptr_t) Universe::verify_klass_mask()); |
304 | 1018 __ andptr(c_rarg2, c_rarg3); |
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1019 __ movptr(c_rarg3, (intptr_t) Universe::verify_klass_bits()); |
304 | 1020 __ cmpptr(c_rarg2, c_rarg3); |
0 | 1021 __ jcc(Assembler::notZero, error); |
1022 | |
1023 // make sure klass' klass is 'reasonable' | |
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1024 __ load_klass(rax, rax); |
304 | 1025 __ testptr(rax, rax); |
0 | 1026 __ jcc(Assembler::zero, error); // if klass' klass is NULL it is broken |
1027 // Check if the klass' klass is in the right area of memory | |
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1028 __ movptr(c_rarg3, (intptr_t) Universe::verify_klass_mask()); |
304 | 1029 __ andptr(rax, c_rarg3); |
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1030 __ movptr(c_rarg3, (intptr_t) Universe::verify_klass_bits()); |
304 | 1031 __ cmpptr(rax, c_rarg3); |
0 | 1032 __ jcc(Assembler::notZero, error); |
1033 | |
1034 // return if everything seems ok | |
1035 __ bind(exit); | |
304 | 1036 __ movptr(rax, Address(rsp, saved_rax)); // get saved rax back |
1583 | 1037 __ movptr(rscratch1, Address(rsp, saved_r10)); // get saved r10 back |
304 | 1038 __ pop(c_rarg3); // restore c_rarg3 |
1039 __ pop(c_rarg2); // restore c_rarg2 | |
1040 __ pop(r12); // restore r12 | |
1041 __ popf(); // restore flags | |
1583 | 1042 __ ret(4 * wordSize); // pop caller saved stuff |
0 | 1043 |
1044 // handle errors | |
1045 __ bind(error); | |
304 | 1046 __ movptr(rax, Address(rsp, saved_rax)); // get saved rax back |
1583 | 1047 __ movptr(rscratch1, Address(rsp, saved_r10)); // get saved r10 back |
304 | 1048 __ pop(c_rarg3); // get saved c_rarg3 back |
1049 __ pop(c_rarg2); // get saved c_rarg2 back | |
1050 __ pop(r12); // get saved r12 back | |
1051 __ popf(); // get saved flags off stack -- | |
0 | 1052 // will be ignored |
1053 | |
304 | 1054 __ pusha(); // push registers |
0 | 1055 // (rip is already |
1056 // already pushed) | |
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1057 // debug(char* msg, int64_t pc, int64_t regs[]) |
0 | 1058 // We've popped the registers we'd saved (c_rarg3, c_rarg2 and flags), and |
1059 // pushed all the registers, so now the stack looks like: | |
1060 // [tos + 0] 16 saved registers | |
1061 // [tos + 16] return address | |
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1062 // * [tos + 17] error message (char*) |
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1063 // * [tos + 18] object to verify (oop) |
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1064 // * [tos + 19] saved rax - saved by caller and bashed |
1583 | 1065 // * [tos + 20] saved r10 (rscratch1) - saved by caller |
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1066 // * = popped on exit |
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1067 |
304 | 1068 __ movptr(c_rarg0, Address(rsp, error_msg)); // pass address of error message |
1069 __ movptr(c_rarg1, Address(rsp, return_addr)); // pass return address | |
1070 __ movq(c_rarg2, rsp); // pass address of regs on stack | |
1071 __ mov(r12, rsp); // remember rsp | |
1072 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows | |
1073 __ andptr(rsp, -16); // align stack as required by ABI | |
0 | 1074 BLOCK_COMMENT("call MacroAssembler::debug"); |
304 | 1075 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, MacroAssembler::debug64))); |
1076 __ mov(rsp, r12); // restore rsp | |
1077 __ popa(); // pop registers (includes r12) | |
1583 | 1078 __ ret(4 * wordSize); // pop caller saved stuff |
0 | 1079 |
1080 return start; | |
1081 } | |
1082 | |
1083 // | |
1084 // Verify that a register contains clean 32-bits positive value | |
1085 // (high 32-bits are 0) so it could be used in 64-bits shifts. | |
1086 // | |
1087 // Input: | |
1088 // Rint - 32-bits value | |
1089 // Rtmp - scratch | |
1090 // | |
1091 void assert_clean_int(Register Rint, Register Rtmp) { | |
1092 #ifdef ASSERT | |
1093 Label L; | |
1094 assert_different_registers(Rtmp, Rint); | |
1095 __ movslq(Rtmp, Rint); | |
1096 __ cmpq(Rtmp, Rint); | |
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1097 __ jcc(Assembler::equal, L); |
0 | 1098 __ stop("high 32-bits of int value are not 0"); |
1099 __ bind(L); | |
1100 #endif | |
1101 } | |
1102 | |
1103 // Generate overlap test for array copy stubs | |
1104 // | |
1105 // Input: | |
1106 // c_rarg0 - from | |
1107 // c_rarg1 - to | |
1108 // c_rarg2 - element count | |
1109 // | |
1110 // Output: | |
1111 // rax - &from[element count - 1] | |
1112 // | |
1113 void array_overlap_test(address no_overlap_target, Address::ScaleFactor sf) { | |
1114 assert(no_overlap_target != NULL, "must be generated"); | |
1115 array_overlap_test(no_overlap_target, NULL, sf); | |
1116 } | |
1117 void array_overlap_test(Label& L_no_overlap, Address::ScaleFactor sf) { | |
1118 array_overlap_test(NULL, &L_no_overlap, sf); | |
1119 } | |
1120 void array_overlap_test(address no_overlap_target, Label* NOLp, Address::ScaleFactor sf) { | |
1121 const Register from = c_rarg0; | |
1122 const Register to = c_rarg1; | |
1123 const Register count = c_rarg2; | |
1124 const Register end_from = rax; | |
1125 | |
304 | 1126 __ cmpptr(to, from); |
1127 __ lea(end_from, Address(from, count, sf, 0)); | |
0 | 1128 if (NOLp == NULL) { |
1129 ExternalAddress no_overlap(no_overlap_target); | |
1130 __ jump_cc(Assembler::belowEqual, no_overlap); | |
304 | 1131 __ cmpptr(to, end_from); |
0 | 1132 __ jump_cc(Assembler::aboveEqual, no_overlap); |
1133 } else { | |
1134 __ jcc(Assembler::belowEqual, (*NOLp)); | |
304 | 1135 __ cmpptr(to, end_from); |
0 | 1136 __ jcc(Assembler::aboveEqual, (*NOLp)); |
1137 } | |
1138 } | |
1139 | |
1140 // Shuffle first three arg regs on Windows into Linux/Solaris locations. | |
1141 // | |
1142 // Outputs: | |
1143 // rdi - rcx | |
1144 // rsi - rdx | |
1145 // rdx - r8 | |
1146 // rcx - r9 | |
1147 // | |
1148 // Registers r9 and r10 are used to save rdi and rsi on Windows, which latter | |
1149 // are non-volatile. r9 and r10 should not be used by the caller. | |
1150 // | |
1151 void setup_arg_regs(int nargs = 3) { | |
1152 const Register saved_rdi = r9; | |
1153 const Register saved_rsi = r10; | |
1154 assert(nargs == 3 || nargs == 4, "else fix"); | |
1155 #ifdef _WIN64 | |
1156 assert(c_rarg0 == rcx && c_rarg1 == rdx && c_rarg2 == r8 && c_rarg3 == r9, | |
1157 "unexpected argument registers"); | |
1158 if (nargs >= 4) | |
304 | 1159 __ mov(rax, r9); // r9 is also saved_rdi |
1160 __ movptr(saved_rdi, rdi); | |
1161 __ movptr(saved_rsi, rsi); | |
1162 __ mov(rdi, rcx); // c_rarg0 | |
1163 __ mov(rsi, rdx); // c_rarg1 | |
1164 __ mov(rdx, r8); // c_rarg2 | |
0 | 1165 if (nargs >= 4) |
304 | 1166 __ mov(rcx, rax); // c_rarg3 (via rax) |
0 | 1167 #else |
1168 assert(c_rarg0 == rdi && c_rarg1 == rsi && c_rarg2 == rdx && c_rarg3 == rcx, | |
1169 "unexpected argument registers"); | |
1170 #endif | |
1171 } | |
1172 | |
1173 void restore_arg_regs() { | |
1174 const Register saved_rdi = r9; | |
1175 const Register saved_rsi = r10; | |
1176 #ifdef _WIN64 | |
304 | 1177 __ movptr(rdi, saved_rdi); |
1178 __ movptr(rsi, saved_rsi); | |
0 | 1179 #endif |
1180 } | |
1181 | |
1182 // Generate code for an array write pre barrier | |
1183 // | |
1184 // addr - starting address | |
2324 | 1185 // count - element count |
1186 // tmp - scratch register | |
0 | 1187 // |
1188 // Destroy no registers! | |
1189 // | |
2324 | 1190 void gen_write_ref_array_pre_barrier(Register addr, Register count, bool dest_uninitialized) { |
0 | 1191 BarrierSet* bs = Universe::heap()->barrier_set(); |
1192 switch (bs->kind()) { | |
1193 case BarrierSet::G1SATBCT: | |
1194 case BarrierSet::G1SATBCTLogging: | |
2324 | 1195 // With G1, don't generate the call if we statically know that the target in uninitialized |
1196 if (!dest_uninitialized) { | |
1197 __ pusha(); // push registers | |
1198 if (count == c_rarg0) { | |
1199 if (addr == c_rarg1) { | |
1200 // exactly backwards!! | |
1201 __ xchgptr(c_rarg1, c_rarg0); | |
1202 } else { | |
1203 __ movptr(c_rarg1, count); | |
1204 __ movptr(c_rarg0, addr); | |
1205 } | |
1206 } else { | |
1207 __ movptr(c_rarg0, addr); | |
1208 __ movptr(c_rarg1, count); | |
1209 } | |
1210 __ call_VM_leaf(CAST_FROM_FN_PTR(address, BarrierSet::static_write_ref_array_pre), 2); | |
1211 __ popa(); | |
0 | 1212 } |
2324 | 1213 break; |
0 | 1214 case BarrierSet::CardTableModRef: |
1215 case BarrierSet::CardTableExtension: | |
1216 case BarrierSet::ModRef: | |
1217 break; | |
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1218 default: |
0 | 1219 ShouldNotReachHere(); |
1220 | |
1221 } | |
1222 } | |
1223 | |
1224 // | |
1225 // Generate code for an array write post barrier | |
1226 // | |
1227 // Input: | |
1228 // start - register containing starting address of destination array | |
1229 // end - register containing ending address of destination array | |
1230 // scratch - scratch register | |
1231 // | |
1232 // The input registers are overwritten. | |
1233 // The ending address is inclusive. | |
1234 void gen_write_ref_array_post_barrier(Register start, Register end, Register scratch) { | |
1235 assert_different_registers(start, end, scratch); | |
1236 BarrierSet* bs = Universe::heap()->barrier_set(); | |
1237 switch (bs->kind()) { | |
1238 case BarrierSet::G1SATBCT: | |
1239 case BarrierSet::G1SATBCTLogging: | |
1240 | |
1241 { | |
304 | 1242 __ pusha(); // push registers (overkill) |
0 | 1243 // must compute element count unless barrier set interface is changed (other platforms supply count) |
1244 assert_different_registers(start, end, scratch); | |
845
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1245 __ lea(scratch, Address(end, BytesPerHeapOop)); |
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1246 __ subptr(scratch, start); // subtract start to get #bytes |
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1247 __ shrptr(scratch, LogBytesPerHeapOop); // convert to element count |
304 | 1248 __ mov(c_rarg0, start); |
1249 __ mov(c_rarg1, scratch); | |
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1250 __ call_VM_leaf(CAST_FROM_FN_PTR(address, BarrierSet::static_write_ref_array_post), 2); |
304 | 1251 __ popa(); |
0 | 1252 } |
1253 break; | |
1254 case BarrierSet::CardTableModRef: | |
1255 case BarrierSet::CardTableExtension: | |
1256 { | |
1257 CardTableModRefBS* ct = (CardTableModRefBS*)bs; | |
1258 assert(sizeof(*ct->byte_map_base) == sizeof(jbyte), "adjust this code"); | |
1259 | |
1260 Label L_loop; | |
1261 | |
304 | 1262 __ shrptr(start, CardTableModRefBS::card_shift); |
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1263 __ addptr(end, BytesPerHeapOop); |
304 | 1264 __ shrptr(end, CardTableModRefBS::card_shift); |
1265 __ subptr(end, start); // number of bytes to copy | |
0 | 1266 |
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1267 intptr_t disp = (intptr_t) ct->byte_map_base; |
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1268 if (__ is_simm32(disp)) { |
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1269 Address cardtable(noreg, noreg, Address::no_scale, disp); |
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1270 __ lea(scratch, cardtable); |
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1271 } else { |
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1272 ExternalAddress cardtable((address)disp); |
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1273 __ lea(scratch, cardtable); |
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1274 } |
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1275 |
0 | 1276 const Register count = end; // 'end' register contains bytes count now |
304 | 1277 __ addptr(start, scratch); |
0 | 1278 __ BIND(L_loop); |
1279 __ movb(Address(start, count, Address::times_1), 0); | |
304 | 1280 __ decrement(count); |
0 | 1281 __ jcc(Assembler::greaterEqual, L_loop); |
1282 } | |
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1283 break; |
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1284 default: |
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1285 ShouldNotReachHere(); |
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1286 |
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1287 } |
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1288 } |
0 | 1289 |
405 | 1290 |
0 | 1291 // Copy big chunks forward |
1292 // | |
1293 // Inputs: | |
1294 // end_from - source arrays end address | |
1295 // end_to - destination array end address | |
1296 // qword_count - 64-bits element count, negative | |
1297 // to - scratch | |
1298 // L_copy_32_bytes - entry label | |
1299 // L_copy_8_bytes - exit label | |
1300 // | |
1301 void copy_32_bytes_forward(Register end_from, Register end_to, | |
1302 Register qword_count, Register to, | |
1303 Label& L_copy_32_bytes, Label& L_copy_8_bytes) { | |
1304 DEBUG_ONLY(__ stop("enter at entry label, not here")); | |
1305 Label L_loop; | |
1365 | 1306 __ align(OptoLoopAlignment); |
0 | 1307 __ BIND(L_loop); |
405 | 1308 if(UseUnalignedLoadStores) { |
1309 __ movdqu(xmm0, Address(end_from, qword_count, Address::times_8, -24)); | |
1310 __ movdqu(Address(end_to, qword_count, Address::times_8, -24), xmm0); | |
1311 __ movdqu(xmm1, Address(end_from, qword_count, Address::times_8, - 8)); | |
1312 __ movdqu(Address(end_to, qword_count, Address::times_8, - 8), xmm1); | |
1313 | |
1314 } else { | |
1315 __ movq(to, Address(end_from, qword_count, Address::times_8, -24)); | |
1316 __ movq(Address(end_to, qword_count, Address::times_8, -24), to); | |
1317 __ movq(to, Address(end_from, qword_count, Address::times_8, -16)); | |
1318 __ movq(Address(end_to, qword_count, Address::times_8, -16), to); | |
1319 __ movq(to, Address(end_from, qword_count, Address::times_8, - 8)); | |
1320 __ movq(Address(end_to, qword_count, Address::times_8, - 8), to); | |
1321 __ movq(to, Address(end_from, qword_count, Address::times_8, - 0)); | |
1322 __ movq(Address(end_to, qword_count, Address::times_8, - 0), to); | |
1323 } | |
0 | 1324 __ BIND(L_copy_32_bytes); |
304 | 1325 __ addptr(qword_count, 4); |
0 | 1326 __ jcc(Assembler::lessEqual, L_loop); |
304 | 1327 __ subptr(qword_count, 4); |
0 | 1328 __ jcc(Assembler::less, L_copy_8_bytes); // Copy trailing qwords |
1329 } | |
1330 | |
1331 | |
1332 // Copy big chunks backward | |
1333 // | |
1334 // Inputs: | |
1335 // from - source arrays address | |
1336 // dest - destination array address | |
1337 // qword_count - 64-bits element count | |
1338 // to - scratch | |
1339 // L_copy_32_bytes - entry label | |
1340 // L_copy_8_bytes - exit label | |
1341 // | |
1342 void copy_32_bytes_backward(Register from, Register dest, | |
1343 Register qword_count, Register to, | |
1344 Label& L_copy_32_bytes, Label& L_copy_8_bytes) { | |
1345 DEBUG_ONLY(__ stop("enter at entry label, not here")); | |
1346 Label L_loop; | |
1365 | 1347 __ align(OptoLoopAlignment); |
0 | 1348 __ BIND(L_loop); |
405 | 1349 if(UseUnalignedLoadStores) { |
1350 __ movdqu(xmm0, Address(from, qword_count, Address::times_8, 16)); | |
1351 __ movdqu(Address(dest, qword_count, Address::times_8, 16), xmm0); | |
1352 __ movdqu(xmm1, Address(from, qword_count, Address::times_8, 0)); | |
1353 __ movdqu(Address(dest, qword_count, Address::times_8, 0), xmm1); | |
1354 | |
1355 } else { | |
1356 __ movq(to, Address(from, qword_count, Address::times_8, 24)); | |
1357 __ movq(Address(dest, qword_count, Address::times_8, 24), to); | |
1358 __ movq(to, Address(from, qword_count, Address::times_8, 16)); | |
1359 __ movq(Address(dest, qword_count, Address::times_8, 16), to); | |
1360 __ movq(to, Address(from, qword_count, Address::times_8, 8)); | |
1361 __ movq(Address(dest, qword_count, Address::times_8, 8), to); | |
1362 __ movq(to, Address(from, qword_count, Address::times_8, 0)); | |
1363 __ movq(Address(dest, qword_count, Address::times_8, 0), to); | |
1364 } | |
0 | 1365 __ BIND(L_copy_32_bytes); |
304 | 1366 __ subptr(qword_count, 4); |
0 | 1367 __ jcc(Assembler::greaterEqual, L_loop); |
304 | 1368 __ addptr(qword_count, 4); |
0 | 1369 __ jcc(Assembler::greater, L_copy_8_bytes); // Copy trailing qwords |
1370 } | |
1371 | |
1372 | |
1373 // Arguments: | |
1374 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1375 // ignored | |
1376 // name - stub name string | |
1377 // | |
1378 // Inputs: | |
1379 // c_rarg0 - source array address | |
1380 // c_rarg1 - destination array address | |
1381 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1382 // | |
1383 // If 'from' and/or 'to' are aligned on 4-, 2-, or 1-byte boundaries, | |
1384 // we let the hardware handle it. The one to eight bytes within words, | |
1385 // dwords or qwords that span cache line boundaries will still be loaded | |
1386 // and stored atomically. | |
1387 // | |
1388 // Side Effects: | |
1389 // disjoint_byte_copy_entry is set to the no-overlap entry point | |
1390 // used by generate_conjoint_byte_copy(). | |
1391 // | |
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1392 address generate_disjoint_byte_copy(bool aligned, address* entry, const char *name) { |
0 | 1393 __ align(CodeEntryAlignment); |
1394 StubCodeMark mark(this, "StubRoutines", name); | |
1395 address start = __ pc(); | |
1396 | |
1397 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes, L_copy_2_bytes; | |
1398 Label L_copy_byte, L_exit; | |
1399 const Register from = rdi; // source array address | |
1400 const Register to = rsi; // destination array address | |
1401 const Register count = rdx; // elements count | |
1402 const Register byte_count = rcx; | |
1403 const Register qword_count = count; | |
1404 const Register end_from = from; // source array end address | |
1405 const Register end_to = to; // destination array end address | |
1406 // End pointers are inclusive, and if count is not zero they point | |
1407 // to the last unit copied: end_to[0] := end_from[0] | |
1408 | |
1409 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1410 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1411 | |
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1412 if (entry != NULL) { |
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1413 *entry = __ pc(); |
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1414 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1415 BLOCK_COMMENT("Entry:"); |
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1416 } |
0 | 1417 |
1418 setup_arg_regs(); // from => rdi, to => rsi, count => rdx | |
1419 // r9 and r10 may be used to save non-volatile registers | |
1420 | |
1421 // 'from', 'to' and 'count' are now valid | |
304 | 1422 __ movptr(byte_count, count); |
1423 __ shrptr(count, 3); // count => qword_count | |
0 | 1424 |
1425 // Copy from low to high addresses. Use 'to' as scratch. | |
304 | 1426 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
1427 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
1428 __ negptr(qword_count); // make the count negative | |
0 | 1429 __ jmp(L_copy_32_bytes); |
1430 | |
1431 // Copy trailing qwords | |
1432 __ BIND(L_copy_8_bytes); | |
1433 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
1434 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
304 | 1435 __ increment(qword_count); |
0 | 1436 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1437 | |
1438 // Check for and copy trailing dword | |
1439 __ BIND(L_copy_4_bytes); | |
304 | 1440 __ testl(byte_count, 4); |
0 | 1441 __ jccb(Assembler::zero, L_copy_2_bytes); |
1442 __ movl(rax, Address(end_from, 8)); | |
1443 __ movl(Address(end_to, 8), rax); | |
1444 | |
304 | 1445 __ addptr(end_from, 4); |
1446 __ addptr(end_to, 4); | |
0 | 1447 |
1448 // Check for and copy trailing word | |
1449 __ BIND(L_copy_2_bytes); | |
304 | 1450 __ testl(byte_count, 2); |
0 | 1451 __ jccb(Assembler::zero, L_copy_byte); |
1452 __ movw(rax, Address(end_from, 8)); | |
1453 __ movw(Address(end_to, 8), rax); | |
1454 | |
304 | 1455 __ addptr(end_from, 2); |
1456 __ addptr(end_to, 2); | |
0 | 1457 |
1458 // Check for and copy trailing byte | |
1459 __ BIND(L_copy_byte); | |
304 | 1460 __ testl(byte_count, 1); |
0 | 1461 __ jccb(Assembler::zero, L_exit); |
1462 __ movb(rax, Address(end_from, 8)); | |
1463 __ movb(Address(end_to, 8), rax); | |
1464 | |
1465 __ BIND(L_exit); | |
1466 inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); | |
1467 restore_arg_regs(); | |
304 | 1468 __ xorptr(rax, rax); // return 0 |
0 | 1469 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1470 __ ret(0); | |
1471 | |
1472 // Copy in 32-bytes chunks | |
1473 copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
1474 __ jmp(L_copy_4_bytes); | |
1475 | |
1476 return start; | |
1477 } | |
1478 | |
1479 // Arguments: | |
1480 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1481 // ignored | |
1482 // name - stub name string | |
1483 // | |
1484 // Inputs: | |
1485 // c_rarg0 - source array address | |
1486 // c_rarg1 - destination array address | |
1487 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1488 // | |
1489 // If 'from' and/or 'to' are aligned on 4-, 2-, or 1-byte boundaries, | |
1490 // we let the hardware handle it. The one to eight bytes within words, | |
1491 // dwords or qwords that span cache line boundaries will still be loaded | |
1492 // and stored atomically. | |
1493 // | |
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1494 address generate_conjoint_byte_copy(bool aligned, address nooverlap_target, |
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1495 address* entry, const char *name) { |
0 | 1496 __ align(CodeEntryAlignment); |
1497 StubCodeMark mark(this, "StubRoutines", name); | |
1498 address start = __ pc(); | |
1499 | |
1500 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes, L_copy_2_bytes; | |
1501 const Register from = rdi; // source array address | |
1502 const Register to = rsi; // destination array address | |
1503 const Register count = rdx; // elements count | |
1504 const Register byte_count = rcx; | |
1505 const Register qword_count = count; | |
1506 | |
1507 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1508 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1509 | |
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1510 if (entry != NULL) { |
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1511 *entry = __ pc(); |
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1512 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1513 BLOCK_COMMENT("Entry:"); |
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1514 } |
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1515 |
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1516 array_overlap_test(nooverlap_target, Address::times_1); |
0 | 1517 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
1518 // r9 and r10 may be used to save non-volatile registers | |
1519 | |
1520 // 'from', 'to' and 'count' are now valid | |
304 | 1521 __ movptr(byte_count, count); |
1522 __ shrptr(count, 3); // count => qword_count | |
0 | 1523 |
1524 // Copy from high to low addresses. | |
1525 | |
1526 // Check for and copy trailing byte | |
304 | 1527 __ testl(byte_count, 1); |
0 | 1528 __ jcc(Assembler::zero, L_copy_2_bytes); |
1529 __ movb(rax, Address(from, byte_count, Address::times_1, -1)); | |
1530 __ movb(Address(to, byte_count, Address::times_1, -1), rax); | |
304 | 1531 __ decrement(byte_count); // Adjust for possible trailing word |
0 | 1532 |
1533 // Check for and copy trailing word | |
1534 __ BIND(L_copy_2_bytes); | |
304 | 1535 __ testl(byte_count, 2); |
0 | 1536 __ jcc(Assembler::zero, L_copy_4_bytes); |
1537 __ movw(rax, Address(from, byte_count, Address::times_1, -2)); | |
1538 __ movw(Address(to, byte_count, Address::times_1, -2), rax); | |
1539 | |
1540 // Check for and copy trailing dword | |
1541 __ BIND(L_copy_4_bytes); | |
304 | 1542 __ testl(byte_count, 4); |
0 | 1543 __ jcc(Assembler::zero, L_copy_32_bytes); |
1544 __ movl(rax, Address(from, qword_count, Address::times_8)); | |
1545 __ movl(Address(to, qword_count, Address::times_8), rax); | |
1546 __ jmp(L_copy_32_bytes); | |
1547 | |
1548 // Copy trailing qwords | |
1549 __ BIND(L_copy_8_bytes); | |
1550 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
1551 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
304 | 1552 __ decrement(qword_count); |
0 | 1553 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1554 | |
1555 inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); | |
1556 restore_arg_regs(); | |
304 | 1557 __ xorptr(rax, rax); // return 0 |
0 | 1558 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1559 __ ret(0); | |
1560 | |
1561 // Copy in 32-bytes chunks | |
1562 copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
1563 | |
1564 inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); | |
1565 restore_arg_regs(); | |
304 | 1566 __ xorptr(rax, rax); // return 0 |
0 | 1567 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1568 __ ret(0); | |
1569 | |
1570 return start; | |
1571 } | |
1572 | |
1573 // Arguments: | |
1574 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1575 // ignored | |
1576 // name - stub name string | |
1577 // | |
1578 // Inputs: | |
1579 // c_rarg0 - source array address | |
1580 // c_rarg1 - destination array address | |
1581 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1582 // | |
1583 // If 'from' and/or 'to' are aligned on 4- or 2-byte boundaries, we | |
1584 // let the hardware handle it. The two or four words within dwords | |
1585 // or qwords that span cache line boundaries will still be loaded | |
1586 // and stored atomically. | |
1587 // | |
1588 // Side Effects: | |
1589 // disjoint_short_copy_entry is set to the no-overlap entry point | |
1590 // used by generate_conjoint_short_copy(). | |
1591 // | |
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1592 address generate_disjoint_short_copy(bool aligned, address *entry, const char *name) { |
0 | 1593 __ align(CodeEntryAlignment); |
1594 StubCodeMark mark(this, "StubRoutines", name); | |
1595 address start = __ pc(); | |
1596 | |
1597 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes,L_copy_2_bytes,L_exit; | |
1598 const Register from = rdi; // source array address | |
1599 const Register to = rsi; // destination array address | |
1600 const Register count = rdx; // elements count | |
1601 const Register word_count = rcx; | |
1602 const Register qword_count = count; | |
1603 const Register end_from = from; // source array end address | |
1604 const Register end_to = to; // destination array end address | |
1605 // End pointers are inclusive, and if count is not zero they point | |
1606 // to the last unit copied: end_to[0] := end_from[0] | |
1607 | |
1608 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1609 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1610 | |
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1611 if (entry != NULL) { |
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1612 *entry = __ pc(); |
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1613 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1614 BLOCK_COMMENT("Entry:"); |
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1615 } |
0 | 1616 |
1617 setup_arg_regs(); // from => rdi, to => rsi, count => rdx | |
1618 // r9 and r10 may be used to save non-volatile registers | |
1619 | |
1620 // 'from', 'to' and 'count' are now valid | |
304 | 1621 __ movptr(word_count, count); |
1622 __ shrptr(count, 2); // count => qword_count | |
0 | 1623 |
1624 // Copy from low to high addresses. Use 'to' as scratch. | |
304 | 1625 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
1626 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
1627 __ negptr(qword_count); | |
0 | 1628 __ jmp(L_copy_32_bytes); |
1629 | |
1630 // Copy trailing qwords | |
1631 __ BIND(L_copy_8_bytes); | |
1632 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
1633 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
304 | 1634 __ increment(qword_count); |
0 | 1635 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1636 | |
1637 // Original 'dest' is trashed, so we can't use it as a | |
1638 // base register for a possible trailing word copy | |
1639 | |
1640 // Check for and copy trailing dword | |
1641 __ BIND(L_copy_4_bytes); | |
304 | 1642 __ testl(word_count, 2); |
0 | 1643 __ jccb(Assembler::zero, L_copy_2_bytes); |
1644 __ movl(rax, Address(end_from, 8)); | |
1645 __ movl(Address(end_to, 8), rax); | |
1646 | |
304 | 1647 __ addptr(end_from, 4); |
1648 __ addptr(end_to, 4); | |
0 | 1649 |
1650 // Check for and copy trailing word | |
1651 __ BIND(L_copy_2_bytes); | |
304 | 1652 __ testl(word_count, 1); |
0 | 1653 __ jccb(Assembler::zero, L_exit); |
1654 __ movw(rax, Address(end_from, 8)); | |
1655 __ movw(Address(end_to, 8), rax); | |
1656 | |
1657 __ BIND(L_exit); | |
1658 inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); | |
1659 restore_arg_regs(); | |
304 | 1660 __ xorptr(rax, rax); // return 0 |
0 | 1661 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1662 __ ret(0); | |
1663 | |
1664 // Copy in 32-bytes chunks | |
1665 copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
1666 __ jmp(L_copy_4_bytes); | |
1667 | |
1668 return start; | |
1669 } | |
1670 | |
1763 | 1671 address generate_fill(BasicType t, bool aligned, const char *name) { |
1672 __ align(CodeEntryAlignment); | |
1673 StubCodeMark mark(this, "StubRoutines", name); | |
1674 address start = __ pc(); | |
1675 | |
1676 BLOCK_COMMENT("Entry:"); | |
1677 | |
1678 const Register to = c_rarg0; // source array address | |
1679 const Register value = c_rarg1; // value | |
1680 const Register count = c_rarg2; // elements count | |
1681 | |
1682 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1683 | |
1684 __ generate_fill(t, aligned, to, value, count, rax, xmm0); | |
1685 | |
1686 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
1687 __ ret(0); | |
1688 return start; | |
1689 } | |
1690 | |
0 | 1691 // Arguments: |
1692 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1693 // ignored | |
1694 // name - stub name string | |
1695 // | |
1696 // Inputs: | |
1697 // c_rarg0 - source array address | |
1698 // c_rarg1 - destination array address | |
1699 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1700 // | |
1701 // If 'from' and/or 'to' are aligned on 4- or 2-byte boundaries, we | |
1702 // let the hardware handle it. The two or four words within dwords | |
1703 // or qwords that span cache line boundaries will still be loaded | |
1704 // and stored atomically. | |
1705 // | |
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1706 address generate_conjoint_short_copy(bool aligned, address nooverlap_target, |
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1707 address *entry, const char *name) { |
0 | 1708 __ align(CodeEntryAlignment); |
1709 StubCodeMark mark(this, "StubRoutines", name); | |
1710 address start = __ pc(); | |
1711 | |
1712 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes; | |
1713 const Register from = rdi; // source array address | |
1714 const Register to = rsi; // destination array address | |
1715 const Register count = rdx; // elements count | |
1716 const Register word_count = rcx; | |
1717 const Register qword_count = count; | |
1718 | |
1719 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1720 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1721 | |
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1722 if (entry != NULL) { |
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1723 *entry = __ pc(); |
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1724 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1725 BLOCK_COMMENT("Entry:"); |
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1726 } |
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1727 |
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1728 array_overlap_test(nooverlap_target, Address::times_2); |
0 | 1729 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
1730 // r9 and r10 may be used to save non-volatile registers | |
1731 | |
1732 // 'from', 'to' and 'count' are now valid | |
304 | 1733 __ movptr(word_count, count); |
1734 __ shrptr(count, 2); // count => qword_count | |
0 | 1735 |
1736 // Copy from high to low addresses. Use 'to' as scratch. | |
1737 | |
1738 // Check for and copy trailing word | |
304 | 1739 __ testl(word_count, 1); |
0 | 1740 __ jccb(Assembler::zero, L_copy_4_bytes); |
1741 __ movw(rax, Address(from, word_count, Address::times_2, -2)); | |
1742 __ movw(Address(to, word_count, Address::times_2, -2), rax); | |
1743 | |
1744 // Check for and copy trailing dword | |
1745 __ BIND(L_copy_4_bytes); | |
304 | 1746 __ testl(word_count, 2); |
0 | 1747 __ jcc(Assembler::zero, L_copy_32_bytes); |
1748 __ movl(rax, Address(from, qword_count, Address::times_8)); | |
1749 __ movl(Address(to, qword_count, Address::times_8), rax); | |
1750 __ jmp(L_copy_32_bytes); | |
1751 | |
1752 // Copy trailing qwords | |
1753 __ BIND(L_copy_8_bytes); | |
1754 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
1755 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
304 | 1756 __ decrement(qword_count); |
0 | 1757 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1758 | |
1759 inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); | |
1760 restore_arg_regs(); | |
304 | 1761 __ xorptr(rax, rax); // return 0 |
0 | 1762 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1763 __ ret(0); | |
1764 | |
1765 // Copy in 32-bytes chunks | |
1766 copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
1767 | |
1768 inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); | |
1769 restore_arg_regs(); | |
304 | 1770 __ xorptr(rax, rax); // return 0 |
0 | 1771 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1772 __ ret(0); | |
1773 | |
1774 return start; | |
1775 } | |
1776 | |
1777 // Arguments: | |
1778 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1779 // ignored | |
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1780 // is_oop - true => oop array, so generate store check code |
0 | 1781 // name - stub name string |
1782 // | |
1783 // Inputs: | |
1784 // c_rarg0 - source array address | |
1785 // c_rarg1 - destination array address | |
1786 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1787 // | |
1788 // If 'from' and/or 'to' are aligned on 4-byte boundaries, we let | |
1789 // the hardware handle it. The two dwords within qwords that span | |
1790 // cache line boundaries will still be loaded and stored atomicly. | |
1791 // | |
1792 // Side Effects: | |
1793 // disjoint_int_copy_entry is set to the no-overlap entry point | |
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1794 // used by generate_conjoint_int_oop_copy(). |
0 | 1795 // |
2324 | 1796 address generate_disjoint_int_oop_copy(bool aligned, bool is_oop, address* entry, |
1797 const char *name, bool dest_uninitialized = false) { | |
0 | 1798 __ align(CodeEntryAlignment); |
1799 StubCodeMark mark(this, "StubRoutines", name); | |
1800 address start = __ pc(); | |
1801 | |
1802 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes, L_exit; | |
1803 const Register from = rdi; // source array address | |
1804 const Register to = rsi; // destination array address | |
1805 const Register count = rdx; // elements count | |
1806 const Register dword_count = rcx; | |
1807 const Register qword_count = count; | |
1808 const Register end_from = from; // source array end address | |
1809 const Register end_to = to; // destination array end address | |
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1810 const Register saved_to = r11; // saved destination array address |
0 | 1811 // End pointers are inclusive, and if count is not zero they point |
1812 // to the last unit copied: end_to[0] := end_from[0] | |
1813 | |
1814 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1815 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1816 | |
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1817 if (entry != NULL) { |
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1818 *entry = __ pc(); |
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1819 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1820 BLOCK_COMMENT("Entry:"); |
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1821 } |
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1822 |
0 | 1823 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
1824 // r9 and r10 may be used to save non-volatile registers | |
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1825 if (is_oop) { |
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1826 __ movq(saved_to, to); |
2324 | 1827 gen_write_ref_array_pre_barrier(to, count, dest_uninitialized); |
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1828 } |
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1829 |
0 | 1830 // 'from', 'to' and 'count' are now valid |
304 | 1831 __ movptr(dword_count, count); |
1832 __ shrptr(count, 1); // count => qword_count | |
0 | 1833 |
1834 // Copy from low to high addresses. Use 'to' as scratch. | |
304 | 1835 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
1836 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
1837 __ negptr(qword_count); | |
0 | 1838 __ jmp(L_copy_32_bytes); |
1839 | |
1840 // Copy trailing qwords | |
1841 __ BIND(L_copy_8_bytes); | |
1842 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
1843 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
304 | 1844 __ increment(qword_count); |
0 | 1845 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1846 | |
1847 // Check for and copy trailing dword | |
1848 __ BIND(L_copy_4_bytes); | |
304 | 1849 __ testl(dword_count, 1); // Only byte test since the value is 0 or 1 |
0 | 1850 __ jccb(Assembler::zero, L_exit); |
1851 __ movl(rax, Address(end_from, 8)); | |
1852 __ movl(Address(end_to, 8), rax); | |
1853 | |
1854 __ BIND(L_exit); | |
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1855 if (is_oop) { |
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1856 __ leaq(end_to, Address(saved_to, dword_count, Address::times_4, -4)); |
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1857 gen_write_ref_array_post_barrier(saved_to, end_to, rax); |
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1858 } |
0 | 1859 inc_counter_np(SharedRuntime::_jint_array_copy_ctr); |
1860 restore_arg_regs(); | |
304 | 1861 __ xorptr(rax, rax); // return 0 |
0 | 1862 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1863 __ ret(0); | |
1864 | |
1865 // Copy 32-bytes chunks | |
1866 copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
1867 __ jmp(L_copy_4_bytes); | |
1868 | |
1869 return start; | |
1870 } | |
1871 | |
1872 // Arguments: | |
1873 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1874 // ignored | |
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1875 // is_oop - true => oop array, so generate store check code |
0 | 1876 // name - stub name string |
1877 // | |
1878 // Inputs: | |
1879 // c_rarg0 - source array address | |
1880 // c_rarg1 - destination array address | |
1881 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1882 // | |
1883 // If 'from' and/or 'to' are aligned on 4-byte boundaries, we let | |
1884 // the hardware handle it. The two dwords within qwords that span | |
1885 // cache line boundaries will still be loaded and stored atomicly. | |
1886 // | |
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1887 address generate_conjoint_int_oop_copy(bool aligned, bool is_oop, address nooverlap_target, |
2324 | 1888 address *entry, const char *name, |
1889 bool dest_uninitialized = false) { | |
0 | 1890 __ align(CodeEntryAlignment); |
1891 StubCodeMark mark(this, "StubRoutines", name); | |
1892 address start = __ pc(); | |
1893 | |
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1894 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_2_bytes, L_exit; |
0 | 1895 const Register from = rdi; // source array address |
1896 const Register to = rsi; // destination array address | |
1897 const Register count = rdx; // elements count | |
1898 const Register dword_count = rcx; | |
1899 const Register qword_count = count; | |
1900 | |
1901 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1902 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1903 | |
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1904 if (entry != NULL) { |
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1905 *entry = __ pc(); |
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1906 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1907 BLOCK_COMMENT("Entry:"); |
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1908 } |
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1909 |
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1910 array_overlap_test(nooverlap_target, Address::times_4); |
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1911 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
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1912 // r9 and r10 may be used to save non-volatile registers |
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1913 |
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1914 if (is_oop) { |
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1915 // no registers are destroyed by this call |
2324 | 1916 gen_write_ref_array_pre_barrier(to, count, dest_uninitialized); |
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1917 } |
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1918 |
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1919 assert_clean_int(count, rax); // Make sure 'count' is clean int. |
0 | 1920 // 'from', 'to' and 'count' are now valid |
304 | 1921 __ movptr(dword_count, count); |
1922 __ shrptr(count, 1); // count => qword_count | |
0 | 1923 |
1924 // Copy from high to low addresses. Use 'to' as scratch. | |
1925 | |
1926 // Check for and copy trailing dword | |
304 | 1927 __ testl(dword_count, 1); |
0 | 1928 __ jcc(Assembler::zero, L_copy_32_bytes); |
1929 __ movl(rax, Address(from, dword_count, Address::times_4, -4)); | |
1930 __ movl(Address(to, dword_count, Address::times_4, -4), rax); | |
1931 __ jmp(L_copy_32_bytes); | |
1932 | |
1933 // Copy trailing qwords | |
1934 __ BIND(L_copy_8_bytes); | |
1935 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
1936 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
304 | 1937 __ decrement(qword_count); |
0 | 1938 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1939 | |
1940 inc_counter_np(SharedRuntime::_jint_array_copy_ctr); | |
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1941 if (is_oop) { |
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1942 __ jmp(L_exit); |
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1943 } |
0 | 1944 restore_arg_regs(); |
304 | 1945 __ xorptr(rax, rax); // return 0 |
0 | 1946 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1947 __ ret(0); | |
1948 | |
1949 // Copy in 32-bytes chunks | |
1950 copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
1951 | |
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1952 inc_counter_np(SharedRuntime::_jint_array_copy_ctr); |
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1953 __ bind(L_exit); |
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1954 if (is_oop) { |
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1955 Register end_to = rdx; |
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1956 __ leaq(end_to, Address(to, dword_count, Address::times_4, -4)); |
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1957 gen_write_ref_array_post_barrier(to, end_to, rax); |
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1958 } |
0 | 1959 restore_arg_regs(); |
304 | 1960 __ xorptr(rax, rax); // return 0 |
0 | 1961 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1962 __ ret(0); | |
1963 | |
1964 return start; | |
1965 } | |
1966 | |
1967 // Arguments: | |
1968 // aligned - true => Input and output aligned on a HeapWord boundary == 8 bytes | |
1969 // ignored | |
1970 // is_oop - true => oop array, so generate store check code | |
1971 // name - stub name string | |
1972 // | |
1973 // Inputs: | |
1974 // c_rarg0 - source array address | |
1975 // c_rarg1 - destination array address | |
1976 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1977 // | |
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1978 // Side Effects: |
0 | 1979 // disjoint_oop_copy_entry or disjoint_long_copy_entry is set to the |
1980 // no-overlap entry point used by generate_conjoint_long_oop_copy(). | |
1981 // | |
2324 | 1982 address generate_disjoint_long_oop_copy(bool aligned, bool is_oop, address *entry, |
1983 const char *name, bool dest_uninitialized = false) { | |
0 | 1984 __ align(CodeEntryAlignment); |
1985 StubCodeMark mark(this, "StubRoutines", name); | |
1986 address start = __ pc(); | |
1987 | |
1988 Label L_copy_32_bytes, L_copy_8_bytes, L_exit; | |
1989 const Register from = rdi; // source array address | |
1990 const Register to = rsi; // destination array address | |
1991 const Register qword_count = rdx; // elements count | |
1992 const Register end_from = from; // source array end address | |
1993 const Register end_to = rcx; // destination array end address | |
1994 const Register saved_to = to; | |
1995 // End pointers are inclusive, and if count is not zero they point | |
1996 // to the last unit copied: end_to[0] := end_from[0] | |
1997 | |
1998 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1999 // Save no-overlap entry point for generate_conjoint_long_oop_copy() | |
2000 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
2001 | |
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2002 if (entry != NULL) { |
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2003 *entry = __ pc(); |
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2004 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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2005 BLOCK_COMMENT("Entry:"); |
0 | 2006 } |
2007 | |
2008 setup_arg_regs(); // from => rdi, to => rsi, count => rdx | |
2009 // r9 and r10 may be used to save non-volatile registers | |
2010 // 'from', 'to' and 'qword_count' are now valid | |
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2011 if (is_oop) { |
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2012 // no registers are destroyed by this call |
2324 | 2013 gen_write_ref_array_pre_barrier(to, qword_count, dest_uninitialized); |
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2014 } |
0 | 2015 |
2016 // Copy from low to high addresses. Use 'to' as scratch. | |
304 | 2017 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
2018 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
2019 __ negptr(qword_count); | |
0 | 2020 __ jmp(L_copy_32_bytes); |
2021 | |
2022 // Copy trailing qwords | |
2023 __ BIND(L_copy_8_bytes); | |
2024 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
2025 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
304 | 2026 __ increment(qword_count); |
0 | 2027 __ jcc(Assembler::notZero, L_copy_8_bytes); |
2028 | |
2029 if (is_oop) { | |
2030 __ jmp(L_exit); | |
2031 } else { | |
2032 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); | |
2033 restore_arg_regs(); | |
304 | 2034 __ xorptr(rax, rax); // return 0 |
0 | 2035 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2036 __ ret(0); | |
2037 } | |
2038 | |
2039 // Copy 64-byte chunks | |
2040 copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
2041 | |
2042 if (is_oop) { | |
2043 __ BIND(L_exit); | |
2044 gen_write_ref_array_post_barrier(saved_to, end_to, rax); | |
2045 inc_counter_np(SharedRuntime::_oop_array_copy_ctr); | |
2046 } else { | |
2047 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); | |
2048 } | |
2049 restore_arg_regs(); | |
304 | 2050 __ xorptr(rax, rax); // return 0 |
0 | 2051 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2052 __ ret(0); | |
2053 | |
2054 return start; | |
2055 } | |
2056 | |
2057 // Arguments: | |
2058 // aligned - true => Input and output aligned on a HeapWord boundary == 8 bytes | |
2059 // ignored | |
2060 // is_oop - true => oop array, so generate store check code | |
2061 // name - stub name string | |
2062 // | |
2063 // Inputs: | |
2064 // c_rarg0 - source array address | |
2065 // c_rarg1 - destination array address | |
2066 // c_rarg2 - element count, treated as ssize_t, can be zero | |
2067 // | |
2324 | 2068 address generate_conjoint_long_oop_copy(bool aligned, bool is_oop, |
2069 address nooverlap_target, address *entry, | |
2070 const char *name, bool dest_uninitialized = false) { | |
0 | 2071 __ align(CodeEntryAlignment); |
2072 StubCodeMark mark(this, "StubRoutines", name); | |
2073 address start = __ pc(); | |
2074 | |
2075 Label L_copy_32_bytes, L_copy_8_bytes, L_exit; | |
2076 const Register from = rdi; // source array address | |
2077 const Register to = rsi; // destination array address | |
2078 const Register qword_count = rdx; // elements count | |
2079 const Register saved_count = rcx; | |
2080 | |
2081 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2082 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
2083 | |
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2084 if (entry != NULL) { |
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2085 *entry = __ pc(); |
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2086 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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2087 BLOCK_COMMENT("Entry:"); |
0 | 2088 } |
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2089 |
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2090 array_overlap_test(nooverlap_target, Address::times_8); |
0 | 2091 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
2092 // r9 and r10 may be used to save non-volatile registers | |
2093 // 'from', 'to' and 'qword_count' are now valid | |
2094 if (is_oop) { | |
2095 // Save to and count for store barrier | |
304 | 2096 __ movptr(saved_count, qword_count); |
0 | 2097 // No registers are destroyed by this call |
2324 | 2098 gen_write_ref_array_pre_barrier(to, saved_count, dest_uninitialized); |
0 | 2099 } |
2100 | |
2101 __ jmp(L_copy_32_bytes); | |
2102 | |
2103 // Copy trailing qwords | |
2104 __ BIND(L_copy_8_bytes); | |
2105 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
2106 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
304 | 2107 __ decrement(qword_count); |
0 | 2108 __ jcc(Assembler::notZero, L_copy_8_bytes); |
2109 | |
2110 if (is_oop) { | |
2111 __ jmp(L_exit); | |
2112 } else { | |
2113 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); | |
2114 restore_arg_regs(); | |
304 | 2115 __ xorptr(rax, rax); // return 0 |
0 | 2116 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2117 __ ret(0); | |
2118 } | |
2119 | |
2120 // Copy in 32-bytes chunks | |
2121 copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
2122 | |
2123 if (is_oop) { | |
2124 __ BIND(L_exit); | |
304 | 2125 __ lea(rcx, Address(to, saved_count, Address::times_8, -8)); |
0 | 2126 gen_write_ref_array_post_barrier(to, rcx, rax); |
2127 inc_counter_np(SharedRuntime::_oop_array_copy_ctr); | |
2128 } else { | |
2129 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); | |
2130 } | |
2131 restore_arg_regs(); | |
304 | 2132 __ xorptr(rax, rax); // return 0 |
0 | 2133 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2134 __ ret(0); | |
2135 | |
2136 return start; | |
2137 } | |
2138 | |
2139 | |
2140 // Helper for generating a dynamic type check. | |
2141 // Smashes no registers. | |
2142 void generate_type_check(Register sub_klass, | |
2143 Register super_check_offset, | |
2144 Register super_klass, | |
2145 Label& L_success) { | |
2146 assert_different_registers(sub_klass, super_check_offset, super_klass); | |
2147 | |
2148 BLOCK_COMMENT("type_check:"); | |
2149 | |
2150 Label L_miss; | |
2151 | |
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2152 __ check_klass_subtype_fast_path(sub_klass, super_klass, noreg, &L_success, &L_miss, NULL, |
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2153 super_check_offset); |
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2154 __ check_klass_subtype_slow_path(sub_klass, super_klass, noreg, noreg, &L_success, NULL); |
0 | 2155 |
2156 // Fall through on failure! | |
2157 __ BIND(L_miss); | |
2158 } | |
2159 | |
2160 // | |
2161 // Generate checkcasting array copy stub | |
2162 // | |
2163 // Input: | |
2164 // c_rarg0 - source array address | |
2165 // c_rarg1 - destination array address | |
2166 // c_rarg2 - element count, treated as ssize_t, can be zero | |
2167 // c_rarg3 - size_t ckoff (super_check_offset) | |
2168 // not Win64 | |
2169 // c_rarg4 - oop ckval (super_klass) | |
2170 // Win64 | |
2171 // rsp+40 - oop ckval (super_klass) | |
2172 // | |
2173 // Output: | |
2174 // rax == 0 - success | |
2175 // rax == -1^K - failure, where K is partial transfer count | |
2176 // | |
2324 | 2177 address generate_checkcast_copy(const char *name, address *entry, |
2178 bool dest_uninitialized = false) { | |
0 | 2179 |
2180 Label L_load_element, L_store_element, L_do_card_marks, L_done; | |
2181 | |
2182 // Input registers (after setup_arg_regs) | |
2183 const Register from = rdi; // source array address | |
2184 const Register to = rsi; // destination array address | |
2185 const Register length = rdx; // elements count | |
2186 const Register ckoff = rcx; // super_check_offset | |
2187 const Register ckval = r8; // super_klass | |
2188 | |
2189 // Registers used as temps (r13, r14 are save-on-entry) | |
2190 const Register end_from = from; // source array end address | |
2191 const Register end_to = r13; // destination array end address | |
2192 const Register count = rdx; // -(count_remaining) | |
2193 const Register r14_length = r14; // saved copy of length | |
2194 // End pointers are inclusive, and if length is not zero they point | |
2195 // to the last unit copied: end_to[0] := end_from[0] | |
2196 | |
2197 const Register rax_oop = rax; // actual oop copied | |
2198 const Register r11_klass = r11; // oop._klass | |
2199 | |
2200 //--------------------------------------------------------------- | |
2201 // Assembler stub will be used for this call to arraycopy | |
2202 // if the two arrays are subtypes of Object[] but the | |
2203 // destination array type is not equal to or a supertype | |
2204 // of the source type. Each element must be separately | |
2205 // checked. | |
2206 | |
2207 __ align(CodeEntryAlignment); | |
2208 StubCodeMark mark(this, "StubRoutines", name); | |
2209 address start = __ pc(); | |
2210 | |
2211 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2212 | |
2213 #ifdef ASSERT | |
2214 // caller guarantees that the arrays really are different | |
2215 // otherwise, we would have to make conjoint checks | |
2216 { Label L; | |
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2217 array_overlap_test(L, TIMES_OOP); |
0 | 2218 __ stop("checkcast_copy within a single array"); |
2219 __ bind(L); | |
2220 } | |
2221 #endif //ASSERT | |
2222 | |
2223 setup_arg_regs(4); // from => rdi, to => rsi, length => rdx | |
2224 // ckoff => rcx, ckval => r8 | |
2225 // r9 and r10 may be used to save non-volatile registers | |
2226 #ifdef _WIN64 | |
2227 // last argument (#4) is on stack on Win64 | |
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2228 __ movptr(ckval, Address(rsp, 6 * wordSize)); |
0 | 2229 #endif |
2230 | |
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2231 // Caller of this entry point must set up the argument registers. |
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2232 if (entry != NULL) { |
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2233 *entry = __ pc(); |
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2234 BLOCK_COMMENT("Entry:"); |
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2235 } |
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2236 |
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2237 // allocate spill slots for r13, r14 |
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2238 enum { |
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2239 saved_r13_offset, |
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2240 saved_r14_offset, |
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2241 saved_rbp_offset |
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2242 }; |
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2243 __ subptr(rsp, saved_rbp_offset * wordSize); |
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2244 __ movptr(Address(rsp, saved_r13_offset * wordSize), r13); |
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2245 __ movptr(Address(rsp, saved_r14_offset * wordSize), r14); |
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2246 |
0 | 2247 // check that int operands are properly extended to size_t |
2248 assert_clean_int(length, rax); | |
2249 assert_clean_int(ckoff, rax); | |
2250 | |
2251 #ifdef ASSERT | |
2252 BLOCK_COMMENT("assert consistent ckoff/ckval"); | |
2253 // The ckoff and ckval must be mutually consistent, | |
2254 // even though caller generates both. | |
2255 { Label L; | |
2256 int sco_offset = (klassOopDesc::header_size() * HeapWordSize + | |
2257 Klass::super_check_offset_offset_in_bytes()); | |
2258 __ cmpl(ckoff, Address(ckval, sco_offset)); | |
2259 __ jcc(Assembler::equal, L); | |
2260 __ stop("super_check_offset inconsistent"); | |
2261 __ bind(L); | |
2262 } | |
2263 #endif //ASSERT | |
2264 | |
2265 // Loop-invariant addresses. They are exclusive end pointers. | |
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2266 Address end_from_addr(from, length, TIMES_OOP, 0); |
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2267 Address end_to_addr(to, length, TIMES_OOP, 0); |
0 | 2268 // Loop-variant addresses. They assume post-incremented count < 0. |
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2269 Address from_element_addr(end_from, count, TIMES_OOP, 0); |
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2270 Address to_element_addr(end_to, count, TIMES_OOP, 0); |
0 | 2271 |
2324 | 2272 gen_write_ref_array_pre_barrier(to, count, dest_uninitialized); |
0 | 2273 |
2274 // Copy from low to high addresses, indexed from the end of each array. | |
304 | 2275 __ lea(end_from, end_from_addr); |
2276 __ lea(end_to, end_to_addr); | |
2277 __ movptr(r14_length, length); // save a copy of the length | |
2278 assert(length == count, ""); // else fix next line: | |
2279 __ negptr(count); // negate and test the length | |
0 | 2280 __ jcc(Assembler::notZero, L_load_element); |
2281 | |
2282 // Empty array: Nothing to do. | |
304 | 2283 __ xorptr(rax, rax); // return 0 on (trivial) success |
0 | 2284 __ jmp(L_done); |
2285 | |
2286 // ======== begin loop ======== | |
2287 // (Loop is rotated; its entry is L_load_element.) | |
2288 // Loop control: | |
2289 // for (count = -count; count != 0; count++) | |
2290 // Base pointers src, dst are biased by 8*(count-1),to last element. | |
1365 | 2291 __ align(OptoLoopAlignment); |
0 | 2292 |
2293 __ BIND(L_store_element); | |
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2294 __ store_heap_oop(to_element_addr, rax_oop); // store the oop |
304 | 2295 __ increment(count); // increment the count toward zero |
0 | 2296 __ jcc(Assembler::zero, L_do_card_marks); |
2297 | |
2298 // ======== loop entry is here ======== | |
2299 __ BIND(L_load_element); | |
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2300 __ load_heap_oop(rax_oop, from_element_addr); // load the oop |
304 | 2301 __ testptr(rax_oop, rax_oop); |
0 | 2302 __ jcc(Assembler::zero, L_store_element); |
2303 | |
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2304 __ load_klass(r11_klass, rax_oop);// query the object klass |
0 | 2305 generate_type_check(r11_klass, ckoff, ckval, L_store_element); |
2306 // ======== end loop ======== | |
2307 | |
2308 // It was a real error; we must depend on the caller to finish the job. | |
2309 // Register rdx = -1 * number of *remaining* oops, r14 = *total* oops. | |
2310 // Emit GC store barriers for the oops we have copied (r14 + rdx), | |
2311 // and report their number to the caller. | |
2312 assert_different_registers(rax, r14_length, count, to, end_to, rcx); | |
304 | 2313 __ lea(end_to, to_element_addr); |
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2314 __ addptr(end_to, -heapOopSize); // make an inclusive end pointer |
362 | 2315 gen_write_ref_array_post_barrier(to, end_to, rscratch1); |
304 | 2316 __ movptr(rax, r14_length); // original oops |
2317 __ addptr(rax, count); // K = (original - remaining) oops | |
2318 __ notptr(rax); // report (-1^K) to caller | |
0 | 2319 __ jmp(L_done); |
2320 | |
2321 // Come here on success only. | |
2322 __ BIND(L_do_card_marks); | |
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2323 __ addptr(end_to, -heapOopSize); // make an inclusive end pointer |
362 | 2324 gen_write_ref_array_post_barrier(to, end_to, rscratch1); |
304 | 2325 __ xorptr(rax, rax); // return 0 on success |
0 | 2326 |
2327 // Common exit point (success or failure). | |
2328 __ BIND(L_done); | |
304 | 2329 __ movptr(r13, Address(rsp, saved_r13_offset * wordSize)); |
2330 __ movptr(r14, Address(rsp, saved_r14_offset * wordSize)); | |
0 | 2331 inc_counter_np(SharedRuntime::_checkcast_array_copy_ctr); |
2332 restore_arg_regs(); | |
2333 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
2334 __ ret(0); | |
2335 | |
2336 return start; | |
2337 } | |
2338 | |
2339 // | |
2340 // Generate 'unsafe' array copy stub | |
2341 // Though just as safe as the other stubs, it takes an unscaled | |
2342 // size_t argument instead of an element count. | |
2343 // | |
2344 // Input: | |
2345 // c_rarg0 - source array address | |
2346 // c_rarg1 - destination array address | |
2347 // c_rarg2 - byte count, treated as ssize_t, can be zero | |
2348 // | |
2349 // Examines the alignment of the operands and dispatches | |
2350 // to a long, int, short, or byte copy loop. | |
2351 // | |
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2352 address generate_unsafe_copy(const char *name, |
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2353 address byte_copy_entry, address short_copy_entry, |
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2354 address int_copy_entry, address long_copy_entry) { |
0 | 2355 |
2356 Label L_long_aligned, L_int_aligned, L_short_aligned; | |
2357 | |
2358 // Input registers (before setup_arg_regs) | |
2359 const Register from = c_rarg0; // source array address | |
2360 const Register to = c_rarg1; // destination array address | |
2361 const Register size = c_rarg2; // byte count (size_t) | |
2362 | |
2363 // Register used as a temp | |
2364 const Register bits = rax; // test copy of low bits | |
2365 | |
2366 __ align(CodeEntryAlignment); | |
2367 StubCodeMark mark(this, "StubRoutines", name); | |
2368 address start = __ pc(); | |
2369 | |
2370 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2371 | |
2372 // bump this on entry, not on exit: | |
2373 inc_counter_np(SharedRuntime::_unsafe_array_copy_ctr); | |
2374 | |
304 | 2375 __ mov(bits, from); |
2376 __ orptr(bits, to); | |
2377 __ orptr(bits, size); | |
0 | 2378 |
2379 __ testb(bits, BytesPerLong-1); | |
2380 __ jccb(Assembler::zero, L_long_aligned); | |
2381 | |
2382 __ testb(bits, BytesPerInt-1); | |
2383 __ jccb(Assembler::zero, L_int_aligned); | |
2384 | |
2385 __ testb(bits, BytesPerShort-1); | |
2386 __ jump_cc(Assembler::notZero, RuntimeAddress(byte_copy_entry)); | |
2387 | |
2388 __ BIND(L_short_aligned); | |
304 | 2389 __ shrptr(size, LogBytesPerShort); // size => short_count |
0 | 2390 __ jump(RuntimeAddress(short_copy_entry)); |
2391 | |
2392 __ BIND(L_int_aligned); | |
304 | 2393 __ shrptr(size, LogBytesPerInt); // size => int_count |
0 | 2394 __ jump(RuntimeAddress(int_copy_entry)); |
2395 | |
2396 __ BIND(L_long_aligned); | |
304 | 2397 __ shrptr(size, LogBytesPerLong); // size => qword_count |
0 | 2398 __ jump(RuntimeAddress(long_copy_entry)); |
2399 | |
2400 return start; | |
2401 } | |
2402 | |
2403 // Perform range checks on the proposed arraycopy. | |
2404 // Kills temp, but nothing else. | |
2405 // Also, clean the sign bits of src_pos and dst_pos. | |
2406 void arraycopy_range_checks(Register src, // source array oop (c_rarg0) | |
2407 Register src_pos, // source position (c_rarg1) | |
2408 Register dst, // destination array oo (c_rarg2) | |
2409 Register dst_pos, // destination position (c_rarg3) | |
2410 Register length, | |
2411 Register temp, | |
2412 Label& L_failed) { | |
2413 BLOCK_COMMENT("arraycopy_range_checks:"); | |
2414 | |
2415 // if (src_pos + length > arrayOop(src)->length()) FAIL; | |
2416 __ movl(temp, length); | |
2417 __ addl(temp, src_pos); // src_pos + length | |
2418 __ cmpl(temp, Address(src, arrayOopDesc::length_offset_in_bytes())); | |
2419 __ jcc(Assembler::above, L_failed); | |
2420 | |
2421 // if (dst_pos + length > arrayOop(dst)->length()) FAIL; | |
2422 __ movl(temp, length); | |
2423 __ addl(temp, dst_pos); // dst_pos + length | |
2424 __ cmpl(temp, Address(dst, arrayOopDesc::length_offset_in_bytes())); | |
2425 __ jcc(Assembler::above, L_failed); | |
2426 | |
2427 // Have to clean up high 32-bits of 'src_pos' and 'dst_pos'. | |
2428 // Move with sign extension can be used since they are positive. | |
2429 __ movslq(src_pos, src_pos); | |
2430 __ movslq(dst_pos, dst_pos); | |
2431 | |
2432 BLOCK_COMMENT("arraycopy_range_checks done"); | |
2433 } | |
2434 | |
2435 // | |
2436 // Generate generic array copy stubs | |
2437 // | |
2438 // Input: | |
2439 // c_rarg0 - src oop | |
2440 // c_rarg1 - src_pos (32-bits) | |
2441 // c_rarg2 - dst oop | |
2442 // c_rarg3 - dst_pos (32-bits) | |
2443 // not Win64 | |
2444 // c_rarg4 - element count (32-bits) | |
2445 // Win64 | |
2446 // rsp+40 - element count (32-bits) | |
2447 // | |
2448 // Output: | |
2449 // rax == 0 - success | |
2450 // rax == -1^K - failure, where K is partial transfer count | |
2451 // | |
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2452 address generate_generic_copy(const char *name, |
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2453 address byte_copy_entry, address short_copy_entry, |
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2454 address int_copy_entry, address oop_copy_entry, |
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2455 address long_copy_entry, address checkcast_copy_entry) { |
0 | 2456 |
2457 Label L_failed, L_failed_0, L_objArray; | |
2458 Label L_copy_bytes, L_copy_shorts, L_copy_ints, L_copy_longs; | |
2459 | |
2460 // Input registers | |
2461 const Register src = c_rarg0; // source array oop | |
2462 const Register src_pos = c_rarg1; // source position | |
2463 const Register dst = c_rarg2; // destination array oop | |
2464 const Register dst_pos = c_rarg3; // destination position | |
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2465 #ifndef _WIN64 |
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2466 const Register length = c_rarg4; |
0 | 2467 #else |
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2468 const Address length(rsp, 6 * wordSize); // elements count is on stack on Win64 |
0 | 2469 #endif |
2470 | |
2471 { int modulus = CodeEntryAlignment; | |
2472 int target = modulus - 5; // 5 = sizeof jmp(L_failed) | |
2473 int advance = target - (__ offset() % modulus); | |
2474 if (advance < 0) advance += modulus; | |
2475 if (advance > 0) __ nop(advance); | |
2476 } | |
2477 StubCodeMark mark(this, "StubRoutines", name); | |
2478 | |
2479 // Short-hop target to L_failed. Makes for denser prologue code. | |
2480 __ BIND(L_failed_0); | |
2481 __ jmp(L_failed); | |
2482 assert(__ offset() % CodeEntryAlignment == 0, "no further alignment needed"); | |
2483 | |
2484 __ align(CodeEntryAlignment); | |
2485 address start = __ pc(); | |
2486 | |
2487 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2488 | |
2489 // bump this on entry, not on exit: | |
2490 inc_counter_np(SharedRuntime::_generic_array_copy_ctr); | |
2491 | |
2492 //----------------------------------------------------------------------- | |
2493 // Assembler stub will be used for this call to arraycopy | |
2494 // if the following conditions are met: | |
2495 // | |
2496 // (1) src and dst must not be null. | |
2497 // (2) src_pos must not be negative. | |
2498 // (3) dst_pos must not be negative. | |
2499 // (4) length must not be negative. | |
2500 // (5) src klass and dst klass should be the same and not NULL. | |
2501 // (6) src and dst should be arrays. | |
2502 // (7) src_pos + length must not exceed length of src. | |
2503 // (8) dst_pos + length must not exceed length of dst. | |
2504 // | |
2505 | |
2506 // if (src == NULL) return -1; | |
304 | 2507 __ testptr(src, src); // src oop |
0 | 2508 size_t j1off = __ offset(); |
2509 __ jccb(Assembler::zero, L_failed_0); | |
2510 | |
2511 // if (src_pos < 0) return -1; | |
2512 __ testl(src_pos, src_pos); // src_pos (32-bits) | |
2513 __ jccb(Assembler::negative, L_failed_0); | |
2514 | |
2515 // if (dst == NULL) return -1; | |
304 | 2516 __ testptr(dst, dst); // dst oop |
0 | 2517 __ jccb(Assembler::zero, L_failed_0); |
2518 | |
2519 // if (dst_pos < 0) return -1; | |
2520 __ testl(dst_pos, dst_pos); // dst_pos (32-bits) | |
2521 size_t j4off = __ offset(); | |
2522 __ jccb(Assembler::negative, L_failed_0); | |
2523 | |
2524 // The first four tests are very dense code, | |
2525 // but not quite dense enough to put four | |
2526 // jumps in a 16-byte instruction fetch buffer. | |
2527 // That's good, because some branch predicters | |
2528 // do not like jumps so close together. | |
2529 // Make sure of this. | |
2530 guarantee(((j1off ^ j4off) & ~15) != 0, "I$ line of 1st & 4th jumps"); | |
2531 | |
2532 // registers used as temp | |
2533 const Register r11_length = r11; // elements count to copy | |
2534 const Register r10_src_klass = r10; // array klass | |
2535 | |
2536 // if (length < 0) return -1; | |
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2537 __ movl(r11_length, length); // length (elements count, 32-bits value) |
0 | 2538 __ testl(r11_length, r11_length); |
2539 __ jccb(Assembler::negative, L_failed_0); | |
2540 | |
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2541 __ load_klass(r10_src_klass, src); |
0 | 2542 #ifdef ASSERT |
2543 // assert(src->klass() != NULL); | |
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2544 { |
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2545 BLOCK_COMMENT("assert klasses not null {"); |
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2546 Label L1, L2; |
304 | 2547 __ testptr(r10_src_klass, r10_src_klass); |
0 | 2548 __ jcc(Assembler::notZero, L2); // it is broken if klass is NULL |
2549 __ bind(L1); | |
2550 __ stop("broken null klass"); | |
2551 __ bind(L2); | |
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2552 __ load_klass(rax, dst); |
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2553 __ cmpq(rax, 0); |
0 | 2554 __ jcc(Assembler::equal, L1); // this would be broken also |
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2555 BLOCK_COMMENT("} assert klasses not null done"); |
0 | 2556 } |
2557 #endif | |
2558 | |
2559 // Load layout helper (32-bits) | |
2560 // | |
2561 // |array_tag| | header_size | element_type | |log2_element_size| | |
2562 // 32 30 24 16 8 2 0 | |
2563 // | |
2564 // array_tag: typeArray = 0x3, objArray = 0x2, non-array = 0x0 | |
2565 // | |
2566 | |
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2567 const int lh_offset = klassOopDesc::header_size() * HeapWordSize + |
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2568 Klass::layout_helper_offset_in_bytes(); |
0 | 2569 |
2570 // Handle objArrays completely differently... | |
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2571 const jint objArray_lh = Klass::array_layout_helper(T_OBJECT); |
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2572 __ cmpl(Address(r10_src_klass, lh_offset), objArray_lh); |
0 | 2573 __ jcc(Assembler::equal, L_objArray); |
2574 | |
2575 // if (src->klass() != dst->klass()) return -1; | |
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2576 __ load_klass(rax, dst); |
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2577 __ cmpq(r10_src_klass, rax); |
0 | 2578 __ jcc(Assembler::notEqual, L_failed); |
2579 | |
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2580 const Register rax_lh = rax; // layout helper |
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2581 __ movl(rax_lh, Address(r10_src_klass, lh_offset)); |
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2582 |
0 | 2583 // if (!src->is_Array()) return -1; |
2584 __ cmpl(rax_lh, Klass::_lh_neutral_value); | |
2585 __ jcc(Assembler::greaterEqual, L_failed); | |
2586 | |
2587 // At this point, it is known to be a typeArray (array_tag 0x3). | |
2588 #ifdef ASSERT | |
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2589 { |
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2590 BLOCK_COMMENT("assert primitive array {"); |
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2591 Label L; |
0 | 2592 __ cmpl(rax_lh, (Klass::_lh_array_tag_type_value << Klass::_lh_array_tag_shift)); |
2593 __ jcc(Assembler::greaterEqual, L); | |
2594 __ stop("must be a primitive array"); | |
2595 __ bind(L); | |
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2596 BLOCK_COMMENT("} assert primitive array done"); |
0 | 2597 } |
2598 #endif | |
2599 | |
2600 arraycopy_range_checks(src, src_pos, dst, dst_pos, r11_length, | |
2601 r10, L_failed); | |
2602 | |
2603 // typeArrayKlass | |
2604 // | |
2605 // src_addr = (src + array_header_in_bytes()) + (src_pos << log2elemsize); | |
2606 // dst_addr = (dst + array_header_in_bytes()) + (dst_pos << log2elemsize); | |
2607 // | |
2608 | |
2609 const Register r10_offset = r10; // array offset | |
2610 const Register rax_elsize = rax_lh; // element size | |
2611 | |
2612 __ movl(r10_offset, rax_lh); | |
2613 __ shrl(r10_offset, Klass::_lh_header_size_shift); | |
304 | 2614 __ andptr(r10_offset, Klass::_lh_header_size_mask); // array_offset |
2615 __ addptr(src, r10_offset); // src array offset | |
2616 __ addptr(dst, r10_offset); // dst array offset | |
0 | 2617 BLOCK_COMMENT("choose copy loop based on element size"); |
2618 __ andl(rax_lh, Klass::_lh_log2_element_size_mask); // rax_lh -> rax_elsize | |
2619 | |
2620 // next registers should be set before the jump to corresponding stub | |
2621 const Register from = c_rarg0; // source array address | |
2622 const Register to = c_rarg1; // destination array address | |
2623 const Register count = c_rarg2; // elements count | |
2624 | |
2625 // 'from', 'to', 'count' registers should be set in such order | |
2626 // since they are the same as 'src', 'src_pos', 'dst'. | |
2627 | |
2628 __ BIND(L_copy_bytes); | |
2629 __ cmpl(rax_elsize, 0); | |
2630 __ jccb(Assembler::notEqual, L_copy_shorts); | |
304 | 2631 __ lea(from, Address(src, src_pos, Address::times_1, 0));// src_addr |
2632 __ lea(to, Address(dst, dst_pos, Address::times_1, 0));// dst_addr | |
2633 __ movl2ptr(count, r11_length); // length | |
0 | 2634 __ jump(RuntimeAddress(byte_copy_entry)); |
2635 | |
2636 __ BIND(L_copy_shorts); | |
2637 __ cmpl(rax_elsize, LogBytesPerShort); | |
2638 __ jccb(Assembler::notEqual, L_copy_ints); | |
304 | 2639 __ lea(from, Address(src, src_pos, Address::times_2, 0));// src_addr |
2640 __ lea(to, Address(dst, dst_pos, Address::times_2, 0));// dst_addr | |
2641 __ movl2ptr(count, r11_length); // length | |
0 | 2642 __ jump(RuntimeAddress(short_copy_entry)); |
2643 | |
2644 __ BIND(L_copy_ints); | |
2645 __ cmpl(rax_elsize, LogBytesPerInt); | |
2646 __ jccb(Assembler::notEqual, L_copy_longs); | |
304 | 2647 __ lea(from, Address(src, src_pos, Address::times_4, 0));// src_addr |
2648 __ lea(to, Address(dst, dst_pos, Address::times_4, 0));// dst_addr | |
2649 __ movl2ptr(count, r11_length); // length | |
0 | 2650 __ jump(RuntimeAddress(int_copy_entry)); |
2651 | |
2652 __ BIND(L_copy_longs); | |
2653 #ifdef ASSERT | |
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2654 { |
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2655 BLOCK_COMMENT("assert long copy {"); |
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2656 Label L; |
0 | 2657 __ cmpl(rax_elsize, LogBytesPerLong); |
2658 __ jcc(Assembler::equal, L); | |
2659 __ stop("must be long copy, but elsize is wrong"); | |
2660 __ bind(L); | |
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2661 BLOCK_COMMENT("} assert long copy done"); |
0 | 2662 } |
2663 #endif | |
304 | 2664 __ lea(from, Address(src, src_pos, Address::times_8, 0));// src_addr |
2665 __ lea(to, Address(dst, dst_pos, Address::times_8, 0));// dst_addr | |
2666 __ movl2ptr(count, r11_length); // length | |
0 | 2667 __ jump(RuntimeAddress(long_copy_entry)); |
2668 | |
2669 // objArrayKlass | |
2670 __ BIND(L_objArray); | |
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2671 // live at this point: r10_src_klass, r11_length, src[_pos], dst[_pos] |
0 | 2672 |
2673 Label L_plain_copy, L_checkcast_copy; | |
2674 // test array classes for subtyping | |
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2675 __ load_klass(rax, dst); |
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2676 __ cmpq(r10_src_klass, rax); // usual case is exact equality |
0 | 2677 __ jcc(Assembler::notEqual, L_checkcast_copy); |
2678 | |
2679 // Identically typed arrays can be copied without element-wise checks. | |
2680 arraycopy_range_checks(src, src_pos, dst, dst_pos, r11_length, | |
2681 r10, L_failed); | |
2682 | |
304 | 2683 __ lea(from, Address(src, src_pos, TIMES_OOP, |
0 | 2684 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // src_addr |
304 | 2685 __ lea(to, Address(dst, dst_pos, TIMES_OOP, |
2686 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // dst_addr | |
2687 __ movl2ptr(count, r11_length); // length | |
0 | 2688 __ BIND(L_plain_copy); |
2689 __ jump(RuntimeAddress(oop_copy_entry)); | |
2690 | |
2691 __ BIND(L_checkcast_copy); | |
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2692 // live at this point: r10_src_klass, r11_length, rax (dst_klass) |
0 | 2693 { |
2694 // Before looking at dst.length, make sure dst is also an objArray. | |
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2695 __ cmpl(Address(rax, lh_offset), objArray_lh); |
0 | 2696 __ jcc(Assembler::notEqual, L_failed); |
2697 | |
2698 // It is safe to examine both src.length and dst.length. | |
2699 arraycopy_range_checks(src, src_pos, dst, dst_pos, r11_length, | |
2700 rax, L_failed); | |
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2701 |
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2702 const Register r11_dst_klass = r11; |
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2703 __ load_klass(r11_dst_klass, dst); // reload |
0 | 2704 |
2705 // Marshal the base address arguments now, freeing registers. | |
304 | 2706 __ lea(from, Address(src, src_pos, TIMES_OOP, |
0 | 2707 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
304 | 2708 __ lea(to, Address(dst, dst_pos, TIMES_OOP, |
0 | 2709 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
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2710 __ movl(count, length); // length (reloaded) |
0 | 2711 Register sco_temp = c_rarg3; // this register is free now |
2712 assert_different_registers(from, to, count, sco_temp, | |
2713 r11_dst_klass, r10_src_klass); | |
2714 assert_clean_int(count, sco_temp); | |
2715 | |
2716 // Generate the type check. | |
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2717 const int sco_offset = (klassOopDesc::header_size() * HeapWordSize + |
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2718 Klass::super_check_offset_offset_in_bytes()); |
0 | 2719 __ movl(sco_temp, Address(r11_dst_klass, sco_offset)); |
2720 assert_clean_int(sco_temp, rax); | |
2721 generate_type_check(r10_src_klass, sco_temp, r11_dst_klass, L_plain_copy); | |
2722 | |
2723 // Fetch destination element klass from the objArrayKlass header. | |
2724 int ek_offset = (klassOopDesc::header_size() * HeapWordSize + | |
2725 objArrayKlass::element_klass_offset_in_bytes()); | |
304 | 2726 __ movptr(r11_dst_klass, Address(r11_dst_klass, ek_offset)); |
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2727 __ movl( sco_temp, Address(r11_dst_klass, sco_offset)); |
0 | 2728 assert_clean_int(sco_temp, rax); |
2729 | |
2730 // the checkcast_copy loop needs two extra arguments: | |
2731 assert(c_rarg3 == sco_temp, "#3 already in place"); | |
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2732 // Set up arguments for checkcast_copy_entry. |
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2733 setup_arg_regs(4); |
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2734 __ movptr(r8, r11_dst_klass); // dst.klass.element_klass, r8 is c_rarg4 on Linux/Solaris |
0 | 2735 __ jump(RuntimeAddress(checkcast_copy_entry)); |
2736 } | |
2737 | |
2738 __ BIND(L_failed); | |
304 | 2739 __ xorptr(rax, rax); |
2740 __ notptr(rax); // return -1 | |
0 | 2741 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2742 __ ret(0); | |
2743 | |
2744 return start; | |
2745 } | |
2746 | |
2747 void generate_arraycopy_stubs() { | |
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2748 address entry; |
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2749 address entry_jbyte_arraycopy; |
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2750 address entry_jshort_arraycopy; |
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2751 address entry_jint_arraycopy; |
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2752 address entry_oop_arraycopy; |
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2753 address entry_jlong_arraycopy; |
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2754 address entry_checkcast_arraycopy; |
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2755 |
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|
2756 StubRoutines::_jbyte_disjoint_arraycopy = generate_disjoint_byte_copy(false, &entry, |
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7020521: arraycopy stubs place prebarriers incorrectly
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diff
changeset
|
2757 "jbyte_disjoint_arraycopy"); |
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diff
changeset
|
2758 StubRoutines::_jbyte_arraycopy = generate_conjoint_byte_copy(false, entry, &entry_jbyte_arraycopy, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
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2006
diff
changeset
|
2759 "jbyte_arraycopy"); |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
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diff
changeset
|
2760 |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
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diff
changeset
|
2761 StubRoutines::_jshort_disjoint_arraycopy = generate_disjoint_short_copy(false, &entry, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
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parents:
2006
diff
changeset
|
2762 "jshort_disjoint_arraycopy"); |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
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2006
diff
changeset
|
2763 StubRoutines::_jshort_arraycopy = generate_conjoint_short_copy(false, entry, &entry_jshort_arraycopy, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2764 "jshort_arraycopy"); |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2765 |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2766 StubRoutines::_jint_disjoint_arraycopy = generate_disjoint_int_oop_copy(false, false, &entry, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2767 "jint_disjoint_arraycopy"); |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2768 StubRoutines::_jint_arraycopy = generate_conjoint_int_oop_copy(false, false, entry, |
d89a22843c62
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parents:
2006
diff
changeset
|
2769 &entry_jint_arraycopy, "jint_arraycopy"); |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2770 |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2771 StubRoutines::_jlong_disjoint_arraycopy = generate_disjoint_long_oop_copy(false, false, &entry, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2772 "jlong_disjoint_arraycopy"); |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2773 StubRoutines::_jlong_arraycopy = generate_conjoint_long_oop_copy(false, false, entry, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
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parents:
2006
diff
changeset
|
2774 &entry_jlong_arraycopy, "jlong_arraycopy"); |
0 | 2775 |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
16
diff
changeset
|
2776 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
16
diff
changeset
|
2777 if (UseCompressedOops) { |
2313
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7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2778 StubRoutines::_oop_disjoint_arraycopy = generate_disjoint_int_oop_copy(false, true, &entry, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2779 "oop_disjoint_arraycopy"); |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2780 StubRoutines::_oop_arraycopy = generate_conjoint_int_oop_copy(false, true, entry, |
d89a22843c62
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iveresov
parents:
2006
diff
changeset
|
2781 &entry_oop_arraycopy, "oop_arraycopy"); |
2324 | 2782 StubRoutines::_oop_disjoint_arraycopy_uninit = generate_disjoint_int_oop_copy(false, true, &entry, |
2783 "oop_disjoint_arraycopy_uninit", | |
2784 /*dest_uninitialized*/true); | |
2785 StubRoutines::_oop_arraycopy_uninit = generate_conjoint_int_oop_copy(false, true, entry, | |
2786 NULL, "oop_arraycopy_uninit", | |
2787 /*dest_uninitialized*/true); | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
16
diff
changeset
|
2788 } else { |
2313
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2789 StubRoutines::_oop_disjoint_arraycopy = generate_disjoint_long_oop_copy(false, true, &entry, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2790 "oop_disjoint_arraycopy"); |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2791 StubRoutines::_oop_arraycopy = generate_conjoint_long_oop_copy(false, true, entry, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2792 &entry_oop_arraycopy, "oop_arraycopy"); |
2324 | 2793 StubRoutines::_oop_disjoint_arraycopy_uninit = generate_disjoint_long_oop_copy(false, true, &entry, |
2794 "oop_disjoint_arraycopy_uninit", | |
2795 /*dest_uninitialized*/true); | |
2796 StubRoutines::_oop_arraycopy_uninit = generate_conjoint_long_oop_copy(false, true, entry, | |
2797 NULL, "oop_arraycopy_uninit", | |
2798 /*dest_uninitialized*/true); | |
113
ba764ed4b6f2
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coleenp
parents:
16
diff
changeset
|
2799 } |
0 | 2800 |
2324 | 2801 StubRoutines::_checkcast_arraycopy = generate_checkcast_copy("checkcast_arraycopy", &entry_checkcast_arraycopy); |
2802 StubRoutines::_checkcast_arraycopy_uninit = generate_checkcast_copy("checkcast_arraycopy_uninit", NULL, | |
2803 /*dest_uninitialized*/true); | |
2804 | |
2313
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2805 StubRoutines::_unsafe_arraycopy = generate_unsafe_copy("unsafe_arraycopy", |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2806 entry_jbyte_arraycopy, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2807 entry_jshort_arraycopy, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2808 entry_jint_arraycopy, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2809 entry_jlong_arraycopy); |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2810 StubRoutines::_generic_arraycopy = generate_generic_copy("generic_arraycopy", |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2811 entry_jbyte_arraycopy, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2812 entry_jshort_arraycopy, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2813 entry_jint_arraycopy, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2814 entry_oop_arraycopy, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2815 entry_jlong_arraycopy, |
d89a22843c62
7020521: arraycopy stubs place prebarriers incorrectly
iveresov
parents:
2006
diff
changeset
|
2816 entry_checkcast_arraycopy); |
0 | 2817 |
1763 | 2818 StubRoutines::_jbyte_fill = generate_fill(T_BYTE, false, "jbyte_fill"); |
2819 StubRoutines::_jshort_fill = generate_fill(T_SHORT, false, "jshort_fill"); | |
2820 StubRoutines::_jint_fill = generate_fill(T_INT, false, "jint_fill"); | |
2821 StubRoutines::_arrayof_jbyte_fill = generate_fill(T_BYTE, true, "arrayof_jbyte_fill"); | |
2822 StubRoutines::_arrayof_jshort_fill = generate_fill(T_SHORT, true, "arrayof_jshort_fill"); | |
2823 StubRoutines::_arrayof_jint_fill = generate_fill(T_INT, true, "arrayof_jint_fill"); | |
2824 | |
0 | 2825 // We don't generate specialized code for HeapWord-aligned source |
2826 // arrays, so just use the code we've already generated | |
2827 StubRoutines::_arrayof_jbyte_disjoint_arraycopy = StubRoutines::_jbyte_disjoint_arraycopy; | |
2828 StubRoutines::_arrayof_jbyte_arraycopy = StubRoutines::_jbyte_arraycopy; | |
2829 | |
2830 StubRoutines::_arrayof_jshort_disjoint_arraycopy = StubRoutines::_jshort_disjoint_arraycopy; | |
2831 StubRoutines::_arrayof_jshort_arraycopy = StubRoutines::_jshort_arraycopy; | |
2832 | |
2833 StubRoutines::_arrayof_jint_disjoint_arraycopy = StubRoutines::_jint_disjoint_arraycopy; | |
2834 StubRoutines::_arrayof_jint_arraycopy = StubRoutines::_jint_arraycopy; | |
2835 | |
2836 StubRoutines::_arrayof_jlong_disjoint_arraycopy = StubRoutines::_jlong_disjoint_arraycopy; | |
2837 StubRoutines::_arrayof_jlong_arraycopy = StubRoutines::_jlong_arraycopy; | |
2838 | |
2839 StubRoutines::_arrayof_oop_disjoint_arraycopy = StubRoutines::_oop_disjoint_arraycopy; | |
2840 StubRoutines::_arrayof_oop_arraycopy = StubRoutines::_oop_arraycopy; | |
2324 | 2841 |
2842 StubRoutines::_arrayof_oop_disjoint_arraycopy_uninit = StubRoutines::_oop_disjoint_arraycopy_uninit; | |
2843 StubRoutines::_arrayof_oop_arraycopy_uninit = StubRoutines::_oop_arraycopy_uninit; | |
0 | 2844 } |
2845 | |
1174
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2846 void generate_math_stubs() { |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2847 { |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2848 StubCodeMark mark(this, "StubRoutines", "log"); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2849 StubRoutines::_intrinsic_log = (double (*)(double)) __ pc(); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2850 |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2851 __ subq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2852 __ movdbl(Address(rsp, 0), xmm0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2853 __ fld_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2854 __ flog(); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2855 __ fstp_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2856 __ movdbl(xmm0, Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2857 __ addq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2858 __ ret(0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2859 } |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2860 { |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2861 StubCodeMark mark(this, "StubRoutines", "log10"); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2862 StubRoutines::_intrinsic_log10 = (double (*)(double)) __ pc(); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2863 |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2864 __ subq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2865 __ movdbl(Address(rsp, 0), xmm0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2866 __ fld_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2867 __ flog10(); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2868 __ fstp_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2869 __ movdbl(xmm0, Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2870 __ addq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2871 __ ret(0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2872 } |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2873 { |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2874 StubCodeMark mark(this, "StubRoutines", "sin"); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2875 StubRoutines::_intrinsic_sin = (double (*)(double)) __ pc(); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2876 |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2877 __ subq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2878 __ movdbl(Address(rsp, 0), xmm0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2879 __ fld_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2880 __ trigfunc('s'); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2881 __ fstp_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2882 __ movdbl(xmm0, Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2883 __ addq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2884 __ ret(0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2885 } |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2886 { |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2887 StubCodeMark mark(this, "StubRoutines", "cos"); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2888 StubRoutines::_intrinsic_cos = (double (*)(double)) __ pc(); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2889 |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2890 __ subq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2891 __ movdbl(Address(rsp, 0), xmm0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2892 __ fld_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2893 __ trigfunc('c'); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2894 __ fstp_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2895 __ movdbl(xmm0, Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2896 __ addq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2897 __ ret(0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2898 } |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2899 { |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2900 StubCodeMark mark(this, "StubRoutines", "tan"); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2901 StubRoutines::_intrinsic_tan = (double (*)(double)) __ pc(); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2902 |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2903 __ subq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2904 __ movdbl(Address(rsp, 0), xmm0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2905 __ fld_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2906 __ trigfunc('t'); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2907 __ fstp_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2908 __ movdbl(xmm0, Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2909 __ addq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2910 __ ret(0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2911 } |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2912 |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2913 // The intrinsic version of these seem to return the same value as |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2914 // the strict version. |
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2915 StubRoutines::_intrinsic_exp = SharedRuntime::dexp; |
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2916 StubRoutines::_intrinsic_pow = SharedRuntime::dpow; |
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2917 } |
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2918 |
0 | 2919 #undef __ |
2920 #define __ masm-> | |
2921 | |
2922 // Continuation point for throwing of implicit exceptions that are | |
2923 // not handled in the current activation. Fabricates an exception | |
2924 // oop and initiates normal exception dispatching in this | |
2925 // frame. Since we need to preserve callee-saved values (currently | |
2926 // only for C2, but done for C1 as well) we need a callee-saved oop | |
2927 // map and therefore have to make these stubs into RuntimeStubs | |
2928 // rather than BufferBlobs. If the compiler needs all registers to | |
2929 // be preserved between the fault point and the exception handler | |
2930 // then it must assume responsibility for that in | |
2931 // AbstractCompiler::continuation_for_implicit_null_exception or | |
2932 // continuation_for_implicit_division_by_zero_exception. All other | |
2933 // implicit exceptions (e.g., NullPointerException or | |
2934 // AbstractMethodError on entry) are either at call sites or | |
2935 // otherwise assume that stack unwinding will be initiated, so | |
2936 // caller saved registers were assumed volatile in the compiler. | |
2937 address generate_throw_exception(const char* name, | |
2938 address runtime_entry, | |
3781
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2939 Register arg1 = noreg, |
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2940 Register arg2 = noreg) { |
0 | 2941 // Information about frame layout at time of blocking runtime call. |
2942 // Note that we only have to preserve callee-saved registers since | |
2943 // the compilers are responsible for supplying a continuation point | |
2944 // if they expect all registers to be preserved. | |
2945 enum layout { | |
2946 rbp_off = frame::arg_reg_save_area_bytes/BytesPerInt, | |
2947 rbp_off2, | |
2948 return_off, | |
2949 return_off2, | |
2950 framesize // inclusive of return address | |
2951 }; | |
2952 | |
2953 int insts_size = 512; | |
2954 int locs_size = 64; | |
2955 | |
2956 CodeBuffer code(name, insts_size, locs_size); | |
2957 OopMapSet* oop_maps = new OopMapSet(); | |
2958 MacroAssembler* masm = new MacroAssembler(&code); | |
2959 | |
2960 address start = __ pc(); | |
2961 | |
2962 // This is an inlined and slightly modified version of call_VM | |
2963 // which has the ability to fetch the return PC out of | |
2964 // thread-local storage and also sets up last_Java_sp slightly | |
2965 // differently than the real call_VM | |
2966 | |
2967 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2968 | |
2969 assert(is_even(framesize/2), "sp not 16-byte aligned"); | |
2970 | |
2971 // return address and rbp are already in place | |
304 | 2972 __ subptr(rsp, (framesize-4) << LogBytesPerInt); // prolog |
0 | 2973 |
2974 int frame_complete = __ pc() - start; | |
2975 | |
2976 // Set up last_Java_sp and last_Java_fp | |
2977 __ set_last_Java_frame(rsp, rbp, NULL); | |
2978 | |
2979 // Call runtime | |
3781
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2980 if (arg1 != noreg) { |
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2981 assert(arg2 != c_rarg1, "clobbered"); |
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2982 __ movptr(c_rarg1, arg1); |
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2983 } |
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2984 if (arg2 != noreg) { |
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2985 __ movptr(c_rarg2, arg2); |
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2986 } |
304 | 2987 __ movptr(c_rarg0, r15_thread); |
0 | 2988 BLOCK_COMMENT("call runtime_entry"); |
2989 __ call(RuntimeAddress(runtime_entry)); | |
2990 | |
2991 // Generate oop map | |
2992 OopMap* map = new OopMap(framesize, 0); | |
2993 | |
2994 oop_maps->add_gc_map(__ pc() - start, map); | |
2995 | |
2996 __ reset_last_Java_frame(true, false); | |
2997 | |
2998 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
2999 | |
3000 // check for pending exceptions | |
3001 #ifdef ASSERT | |
3002 Label L; | |
304 | 3003 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), |
3004 (int32_t) NULL_WORD); | |
0 | 3005 __ jcc(Assembler::notEqual, L); |
3006 __ should_not_reach_here(); | |
3007 __ bind(L); | |
3008 #endif // ASSERT | |
3009 __ jump(RuntimeAddress(StubRoutines::forward_exception_entry())); | |
3010 | |
3011 | |
3012 // codeBlob framesize is in words (not VMRegImpl::slot_size) | |
3013 RuntimeStub* stub = | |
3014 RuntimeStub::new_runtime_stub(name, | |
3015 &code, | |
3016 frame_complete, | |
3017 (framesize >> (LogBytesPerWord - LogBytesPerInt)), | |
3018 oop_maps, false); | |
3019 return stub->entry_point(); | |
3020 } | |
3021 | |
3022 // Initialization | |
3023 void generate_initial() { | |
3024 // Generates all stubs and initializes the entry points | |
3025 | |
3026 // This platform-specific stub is needed by generate_call_stub() | |
304 | 3027 StubRoutines::x86::_mxcsr_std = generate_fp_mask("mxcsr_std", 0x0000000000001F80); |
0 | 3028 |
3029 // entry points that exist in all platforms Note: This is code | |
3030 // that could be shared among different platforms - however the | |
3031 // benefit seems to be smaller than the disadvantage of having a | |
3032 // much more complicated generator structure. See also comment in | |
3033 // stubRoutines.hpp. | |
3034 | |
3035 StubRoutines::_forward_exception_entry = generate_forward_exception(); | |
3036 | |
3037 StubRoutines::_call_stub_entry = | |
3038 generate_call_stub(StubRoutines::_call_stub_return_address); | |
3039 | |
3040 // is referenced by megamorphic call | |
3041 StubRoutines::_catch_exception_entry = generate_catch_exception(); | |
3042 | |
3043 // atomic calls | |
3044 StubRoutines::_atomic_xchg_entry = generate_atomic_xchg(); | |
3045 StubRoutines::_atomic_xchg_ptr_entry = generate_atomic_xchg_ptr(); | |
3046 StubRoutines::_atomic_cmpxchg_entry = generate_atomic_cmpxchg(); | |
3047 StubRoutines::_atomic_cmpxchg_long_entry = generate_atomic_cmpxchg_long(); | |
3048 StubRoutines::_atomic_add_entry = generate_atomic_add(); | |
3049 StubRoutines::_atomic_add_ptr_entry = generate_atomic_add_ptr(); | |
3050 StubRoutines::_fence_entry = generate_orderaccess_fence(); | |
3051 | |
3052 StubRoutines::_handler_for_unsafe_access_entry = | |
3053 generate_handler_for_unsafe_access(); | |
3054 | |
3055 // platform dependent | |
304 | 3056 StubRoutines::x86::_get_previous_fp_entry = generate_get_previous_fp(); |
3057 | |
3058 StubRoutines::x86::_verify_mxcsr_entry = generate_verify_mxcsr(); | |
3781
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3059 |
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3060 // Build this early so it's available for the interpreter. Stub |
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3061 // expects the required and actual types as register arguments in |
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3062 // j_rarg0 and j_rarg1 respectively. |
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3063 StubRoutines::_throw_WrongMethodTypeException_entry = |
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3064 generate_throw_exception("WrongMethodTypeException throw_exception", |
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3065 CAST_FROM_FN_PTR(address, SharedRuntime::throw_WrongMethodTypeException), |
3937 | 3066 rax, rcx); |
0 | 3067 } |
3068 | |
3069 void generate_all() { | |
3070 // Generates all stubs and initializes the entry points | |
3071 | |
3072 // These entry points require SharedInfo::stack0 to be set up in | |
3073 // non-core builds and need to be relocatable, so they each | |
3074 // fabricate a RuntimeStub internally. | |
3075 StubRoutines::_throw_AbstractMethodError_entry = | |
3076 generate_throw_exception("AbstractMethodError throw_exception", | |
3077 CAST_FROM_FN_PTR(address, | |
3078 SharedRuntime:: | |
3937 | 3079 throw_AbstractMethodError)); |
0 | 3080 |
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3081 StubRoutines::_throw_IncompatibleClassChangeError_entry = |
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3082 generate_throw_exception("IncompatibleClassChangeError throw_exception", |
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3083 CAST_FROM_FN_PTR(address, |
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3084 SharedRuntime:: |
3937 | 3085 throw_IncompatibleClassChangeError)); |
0 | 3086 |
3087 StubRoutines::_throw_NullPointerException_at_call_entry = | |
3088 generate_throw_exception("NullPointerException at call throw_exception", | |
3089 CAST_FROM_FN_PTR(address, | |
3090 SharedRuntime:: | |
3937 | 3091 throw_NullPointerException_at_call)); |
0 | 3092 |
3093 StubRoutines::_throw_StackOverflowError_entry = | |
3094 generate_throw_exception("StackOverflowError throw_exception", | |
3095 CAST_FROM_FN_PTR(address, | |
3096 SharedRuntime:: | |
3937 | 3097 throw_StackOverflowError)); |
0 | 3098 |
3099 // entry points that are platform specific | |
304 | 3100 StubRoutines::x86::_f2i_fixup = generate_f2i_fixup(); |
3101 StubRoutines::x86::_f2l_fixup = generate_f2l_fixup(); | |
3102 StubRoutines::x86::_d2i_fixup = generate_d2i_fixup(); | |
3103 StubRoutines::x86::_d2l_fixup = generate_d2l_fixup(); | |
3104 | |
3105 StubRoutines::x86::_float_sign_mask = generate_fp_mask("float_sign_mask", 0x7FFFFFFF7FFFFFFF); | |
3106 StubRoutines::x86::_float_sign_flip = generate_fp_mask("float_sign_flip", 0x8000000080000000); | |
3107 StubRoutines::x86::_double_sign_mask = generate_fp_mask("double_sign_mask", 0x7FFFFFFFFFFFFFFF); | |
3108 StubRoutines::x86::_double_sign_flip = generate_fp_mask("double_sign_flip", 0x8000000000000000); | |
0 | 3109 |
3110 // support for verify_oop (must happen after universe_init) | |
3111 StubRoutines::_verify_oop_subroutine_entry = generate_verify_oop(); | |
3112 | |
3113 // arraycopy stubs used by compilers | |
3114 generate_arraycopy_stubs(); | |
1108 | 3115 |
1174
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3116 generate_math_stubs(); |
0 | 3117 } |
3118 | |
3119 public: | |
3120 StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) { | |
3121 if (all) { | |
3122 generate_all(); | |
3123 } else { | |
3124 generate_initial(); | |
3125 } | |
3126 } | |
3127 }; // end class declaration | |
3128 | |
3129 void StubGenerator_generate(CodeBuffer* code, bool all) { | |
3130 StubGenerator g(code, all); | |
3131 } |