Mercurial > hg > graal-compiler
annotate src/cpu/x86/vm/stubGenerator_x86_64.cpp @ 7386:707e9cca11de
fixed HotSpot windows build
fixed Thread.isInterrupted() slowcase
author | Christian Haeubl <haeubl@ssw.jku.at> |
---|---|
date | Tue, 18 Dec 2012 15:05:58 +0100 |
parents | 291ffc492eb6 |
children | 989155e2d07a |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
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26 #include "asm/macroAssembler.hpp" |
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27 #include "asm/macroAssembler.inline.hpp" |
1972 | 28 #include "interpreter/interpreter.hpp" |
29 #include "nativeInst_x86.hpp" | |
30 #include "oops/instanceOop.hpp" | |
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31 #include "oops/method.hpp" |
1972 | 32 #include "oops/objArrayKlass.hpp" |
33 #include "oops/oop.inline.hpp" | |
34 #include "prims/methodHandles.hpp" | |
35 #include "runtime/frame.inline.hpp" | |
36 #include "runtime/handles.inline.hpp" | |
37 #include "runtime/sharedRuntime.hpp" | |
38 #include "runtime/stubCodeGenerator.hpp" | |
39 #include "runtime/stubRoutines.hpp" | |
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40 #include "runtime/thread.inline.hpp" |
1972 | 41 #include "utilities/top.hpp" |
42 #ifdef COMPILER2 | |
43 #include "opto/runtime.hpp" | |
44 #endif | |
0 | 45 |
46 // Declaration and definition of StubGenerator (no .hpp file). | |
47 // For a more detailed description of the stub routine structure | |
48 // see the comment in stubRoutines.hpp | |
49 | |
50 #define __ _masm-> | |
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51 #define TIMES_OOP (UseCompressedOops ? Address::times_4 : Address::times_8) |
304 | 52 #define a__ ((Assembler*)_masm)-> |
0 | 53 |
54 #ifdef PRODUCT | |
55 #define BLOCK_COMMENT(str) /* nothing */ | |
56 #else | |
57 #define BLOCK_COMMENT(str) __ block_comment(str) | |
58 #endif | |
59 | |
60 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") | |
61 const int MXCSR_MASK = 0xFFC0; // Mask out any pending exceptions | |
62 | |
63 // Stub Code definitions | |
64 | |
65 static address handle_unsafe_access() { | |
66 JavaThread* thread = JavaThread::current(); | |
67 address pc = thread->saved_exception_pc(); | |
68 // pc is the instruction which we must emulate | |
69 // doing a no-op is fine: return garbage from the load | |
70 // therefore, compute npc | |
71 address npc = Assembler::locate_next_instruction(pc); | |
72 | |
73 // request an async exception | |
74 thread->set_pending_unsafe_access_error(); | |
75 | |
76 // return address of next instruction to execute | |
77 return npc; | |
78 } | |
79 | |
80 class StubGenerator: public StubCodeGenerator { | |
81 private: | |
82 | |
83 #ifdef PRODUCT | |
84 #define inc_counter_np(counter) (0) | |
85 #else | |
86 void inc_counter_np_(int& counter) { | |
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87 // This can destroy rscratch1 if counter is far from the code cache |
0 | 88 __ incrementl(ExternalAddress((address)&counter)); |
89 } | |
90 #define inc_counter_np(counter) \ | |
91 BLOCK_COMMENT("inc_counter " #counter); \ | |
92 inc_counter_np_(counter); | |
93 #endif | |
94 | |
95 // Call stubs are used to call Java from C | |
96 // | |
97 // Linux Arguments: | |
98 // c_rarg0: call wrapper address address | |
99 // c_rarg1: result address | |
100 // c_rarg2: result type BasicType | |
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101 // c_rarg3: method Method* |
0 | 102 // c_rarg4: (interpreter) entry point address |
103 // c_rarg5: parameters intptr_t* | |
104 // 16(rbp): parameter size (in words) int | |
105 // 24(rbp): thread Thread* | |
106 // | |
107 // [ return_from_Java ] <--- rsp | |
108 // [ argument word n ] | |
109 // ... | |
110 // -12 [ argument word 1 ] | |
111 // -11 [ saved r15 ] <--- rsp_after_call | |
112 // -10 [ saved r14 ] | |
113 // -9 [ saved r13 ] | |
114 // -8 [ saved r12 ] | |
115 // -7 [ saved rbx ] | |
116 // -6 [ call wrapper ] | |
117 // -5 [ result ] | |
118 // -4 [ result type ] | |
119 // -3 [ method ] | |
120 // -2 [ entry point ] | |
121 // -1 [ parameters ] | |
122 // 0 [ saved rbp ] <--- rbp | |
123 // 1 [ return address ] | |
124 // 2 [ parameter size ] | |
125 // 3 [ thread ] | |
126 // | |
127 // Windows Arguments: | |
128 // c_rarg0: call wrapper address address | |
129 // c_rarg1: result address | |
130 // c_rarg2: result type BasicType | |
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131 // c_rarg3: method Method* |
0 | 132 // 48(rbp): (interpreter) entry point address |
133 // 56(rbp): parameters intptr_t* | |
134 // 64(rbp): parameter size (in words) int | |
135 // 72(rbp): thread Thread* | |
136 // | |
137 // [ return_from_Java ] <--- rsp | |
138 // [ argument word n ] | |
139 // ... | |
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140 // -28 [ argument word 1 ] |
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141 // -27 [ saved xmm15 ] <--- rsp_after_call |
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142 // [ saved xmm7-xmm14 ] |
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143 // -9 [ saved xmm6 ] (each xmm register takes 2 slots) |
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144 // -7 [ saved r15 ] |
0 | 145 // -6 [ saved r14 ] |
146 // -5 [ saved r13 ] | |
147 // -4 [ saved r12 ] | |
148 // -3 [ saved rdi ] | |
149 // -2 [ saved rsi ] | |
150 // -1 [ saved rbx ] | |
151 // 0 [ saved rbp ] <--- rbp | |
152 // 1 [ return address ] | |
153 // 2 [ call wrapper ] | |
154 // 3 [ result ] | |
155 // 4 [ result type ] | |
156 // 5 [ method ] | |
157 // 6 [ entry point ] | |
158 // 7 [ parameters ] | |
159 // 8 [ parameter size ] | |
160 // 9 [ thread ] | |
161 // | |
162 // Windows reserves the callers stack space for arguments 1-4. | |
163 // We spill c_rarg0-c_rarg3 to this space. | |
164 | |
165 // Call stub stack layout word offsets from rbp | |
166 enum call_stub_layout { | |
167 #ifdef _WIN64 | |
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168 xmm_save_first = 6, // save from xmm6 |
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169 xmm_save_last = 15, // to xmm15 |
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170 xmm_save_base = -9, |
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171 rsp_after_call_off = xmm_save_base - 2 * (xmm_save_last - xmm_save_first), // -27 |
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172 r15_off = -7, |
0 | 173 r14_off = -6, |
174 r13_off = -5, | |
175 r12_off = -4, | |
176 rdi_off = -3, | |
177 rsi_off = -2, | |
178 rbx_off = -1, | |
179 rbp_off = 0, | |
180 retaddr_off = 1, | |
181 call_wrapper_off = 2, | |
182 result_off = 3, | |
183 result_type_off = 4, | |
184 method_off = 5, | |
185 entry_point_off = 6, | |
186 parameters_off = 7, | |
187 parameter_size_off = 8, | |
188 thread_off = 9 | |
189 #else | |
190 rsp_after_call_off = -12, | |
191 mxcsr_off = rsp_after_call_off, | |
192 r15_off = -11, | |
193 r14_off = -10, | |
194 r13_off = -9, | |
195 r12_off = -8, | |
196 rbx_off = -7, | |
197 call_wrapper_off = -6, | |
198 result_off = -5, | |
199 result_type_off = -4, | |
200 method_off = -3, | |
201 entry_point_off = -2, | |
202 parameters_off = -1, | |
203 rbp_off = 0, | |
204 retaddr_off = 1, | |
205 parameter_size_off = 2, | |
206 thread_off = 3 | |
207 #endif | |
208 }; | |
209 | |
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210 #ifdef _WIN64 |
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211 Address xmm_save(int reg) { |
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212 assert(reg >= xmm_save_first && reg <= xmm_save_last, "XMM register number out of range"); |
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213 return Address(rbp, (xmm_save_base - (reg - xmm_save_first) * 2) * wordSize); |
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214 } |
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215 #endif |
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216 |
0 | 217 address generate_call_stub(address& return_address) { |
218 assert((int)frame::entry_frame_after_call_words == -(int)rsp_after_call_off + 1 && | |
219 (int)frame::entry_frame_call_wrapper_offset == (int)call_wrapper_off, | |
220 "adjust this code"); | |
221 StubCodeMark mark(this, "StubRoutines", "call_stub"); | |
222 address start = __ pc(); | |
223 | |
224 // same as in generate_catch_exception()! | |
225 const Address rsp_after_call(rbp, rsp_after_call_off * wordSize); | |
226 | |
227 const Address call_wrapper (rbp, call_wrapper_off * wordSize); | |
228 const Address result (rbp, result_off * wordSize); | |
229 const Address result_type (rbp, result_type_off * wordSize); | |
230 const Address method (rbp, method_off * wordSize); | |
231 const Address entry_point (rbp, entry_point_off * wordSize); | |
232 const Address parameters (rbp, parameters_off * wordSize); | |
233 const Address parameter_size(rbp, parameter_size_off * wordSize); | |
234 | |
235 // same as in generate_catch_exception()! | |
236 const Address thread (rbp, thread_off * wordSize); | |
237 | |
238 const Address r15_save(rbp, r15_off * wordSize); | |
239 const Address r14_save(rbp, r14_off * wordSize); | |
240 const Address r13_save(rbp, r13_off * wordSize); | |
241 const Address r12_save(rbp, r12_off * wordSize); | |
242 const Address rbx_save(rbp, rbx_off * wordSize); | |
243 | |
244 // stub code | |
245 __ enter(); | |
304 | 246 __ subptr(rsp, -rsp_after_call_off * wordSize); |
0 | 247 |
248 // save register parameters | |
249 #ifndef _WIN64 | |
304 | 250 __ movptr(parameters, c_rarg5); // parameters |
251 __ movptr(entry_point, c_rarg4); // entry_point | |
0 | 252 #endif |
253 | |
304 | 254 __ movptr(method, c_rarg3); // method |
255 __ movl(result_type, c_rarg2); // result type | |
256 __ movptr(result, c_rarg1); // result | |
257 __ movptr(call_wrapper, c_rarg0); // call wrapper | |
0 | 258 |
259 // save regs belonging to calling function | |
304 | 260 __ movptr(rbx_save, rbx); |
261 __ movptr(r12_save, r12); | |
262 __ movptr(r13_save, r13); | |
263 __ movptr(r14_save, r14); | |
264 __ movptr(r15_save, r15); | |
0 | 265 #ifdef _WIN64 |
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266 for (int i = 6; i <= 15; i++) { |
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267 __ movdqu(xmm_save(i), as_XMMRegister(i)); |
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268 } |
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269 |
0 | 270 const Address rdi_save(rbp, rdi_off * wordSize); |
271 const Address rsi_save(rbp, rsi_off * wordSize); | |
272 | |
304 | 273 __ movptr(rsi_save, rsi); |
274 __ movptr(rdi_save, rdi); | |
0 | 275 #else |
276 const Address mxcsr_save(rbp, mxcsr_off * wordSize); | |
277 { | |
278 Label skip_ldmx; | |
279 __ stmxcsr(mxcsr_save); | |
280 __ movl(rax, mxcsr_save); | |
281 __ andl(rax, MXCSR_MASK); // Only check control and mask bits | |
304 | 282 ExternalAddress mxcsr_std(StubRoutines::x86::mxcsr_std()); |
0 | 283 __ cmp32(rax, mxcsr_std); |
284 __ jcc(Assembler::equal, skip_ldmx); | |
285 __ ldmxcsr(mxcsr_std); | |
286 __ bind(skip_ldmx); | |
287 } | |
288 #endif | |
289 | |
290 // Load up thread register | |
304 | 291 __ movptr(r15_thread, thread); |
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292 __ reinit_heapbase(); |
0 | 293 |
294 #ifdef ASSERT | |
295 // make sure we have no pending exceptions | |
296 { | |
297 Label L; | |
304 | 298 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
0 | 299 __ jcc(Assembler::equal, L); |
300 __ stop("StubRoutines::call_stub: entered with pending exception"); | |
301 __ bind(L); | |
302 } | |
303 #endif | |
304 | |
305 // pass parameters if any | |
306 BLOCK_COMMENT("pass parameters if any"); | |
307 Label parameters_done; | |
308 __ movl(c_rarg3, parameter_size); | |
309 __ testl(c_rarg3, c_rarg3); | |
310 __ jcc(Assembler::zero, parameters_done); | |
311 | |
312 Label loop; | |
304 | 313 __ movptr(c_rarg2, parameters); // parameter pointer |
314 __ movl(c_rarg1, c_rarg3); // parameter counter is in c_rarg1 | |
0 | 315 __ BIND(loop); |
304 | 316 __ movptr(rax, Address(c_rarg2, 0));// get parameter |
317 __ addptr(c_rarg2, wordSize); // advance to next parameter | |
318 __ decrementl(c_rarg1); // decrement counter | |
319 __ push(rax); // pass parameter | |
0 | 320 __ jcc(Assembler::notZero, loop); |
321 | |
322 // call Java function | |
323 __ BIND(parameters_done); | |
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324 __ movptr(rbx, method); // get Method* |
304 | 325 __ movptr(c_rarg1, entry_point); // get entry_point |
326 __ mov(r13, rsp); // set sender sp | |
0 | 327 BLOCK_COMMENT("call Java function"); |
328 __ call(c_rarg1); | |
329 | |
330 BLOCK_COMMENT("call_stub_return_address:"); | |
331 return_address = __ pc(); | |
332 | |
333 // store result depending on type (everything that is not | |
334 // T_OBJECT, T_LONG, T_FLOAT or T_DOUBLE is treated as T_INT) | |
304 | 335 __ movptr(c_rarg0, result); |
0 | 336 Label is_long, is_float, is_double, exit; |
337 __ movl(c_rarg1, result_type); | |
338 __ cmpl(c_rarg1, T_OBJECT); | |
339 __ jcc(Assembler::equal, is_long); | |
340 __ cmpl(c_rarg1, T_LONG); | |
341 __ jcc(Assembler::equal, is_long); | |
342 __ cmpl(c_rarg1, T_FLOAT); | |
343 __ jcc(Assembler::equal, is_float); | |
344 __ cmpl(c_rarg1, T_DOUBLE); | |
345 __ jcc(Assembler::equal, is_double); | |
346 | |
347 // handle T_INT case | |
348 __ movl(Address(c_rarg0, 0), rax); | |
349 | |
350 __ BIND(exit); | |
351 | |
352 // pop parameters | |
304 | 353 __ lea(rsp, rsp_after_call); |
0 | 354 |
355 #ifdef ASSERT | |
356 // verify that threads correspond | |
357 { | |
358 Label L, S; | |
304 | 359 __ cmpptr(r15_thread, thread); |
0 | 360 __ jcc(Assembler::notEqual, S); |
361 __ get_thread(rbx); | |
304 | 362 __ cmpptr(r15_thread, rbx); |
0 | 363 __ jcc(Assembler::equal, L); |
364 __ bind(S); | |
365 __ jcc(Assembler::equal, L); | |
366 __ stop("StubRoutines::call_stub: threads must correspond"); | |
367 __ bind(L); | |
368 } | |
369 #endif | |
370 | |
371 // restore regs belonging to calling function | |
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372 #ifdef _WIN64 |
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373 for (int i = 15; i >= 6; i--) { |
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374 __ movdqu(as_XMMRegister(i), xmm_save(i)); |
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375 } |
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376 #endif |
304 | 377 __ movptr(r15, r15_save); |
378 __ movptr(r14, r14_save); | |
379 __ movptr(r13, r13_save); | |
380 __ movptr(r12, r12_save); | |
381 __ movptr(rbx, rbx_save); | |
0 | 382 |
383 #ifdef _WIN64 | |
304 | 384 __ movptr(rdi, rdi_save); |
385 __ movptr(rsi, rsi_save); | |
0 | 386 #else |
387 __ ldmxcsr(mxcsr_save); | |
388 #endif | |
389 | |
390 // restore rsp | |
304 | 391 __ addptr(rsp, -rsp_after_call_off * wordSize); |
0 | 392 |
393 // return | |
304 | 394 __ pop(rbp); |
0 | 395 __ ret(0); |
396 | |
397 // handle return types different from T_INT | |
398 __ BIND(is_long); | |
399 __ movq(Address(c_rarg0, 0), rax); | |
400 __ jmp(exit); | |
401 | |
402 __ BIND(is_float); | |
403 __ movflt(Address(c_rarg0, 0), xmm0); | |
404 __ jmp(exit); | |
405 | |
406 __ BIND(is_double); | |
407 __ movdbl(Address(c_rarg0, 0), xmm0); | |
408 __ jmp(exit); | |
409 | |
410 return start; | |
411 } | |
412 | |
413 // Return point for a Java call if there's an exception thrown in | |
414 // Java code. The exception is caught and transformed into a | |
415 // pending exception stored in JavaThread that can be tested from | |
416 // within the VM. | |
417 // | |
418 // Note: Usually the parameters are removed by the callee. In case | |
419 // of an exception crossing an activation frame boundary, that is | |
420 // not the case if the callee is compiled code => need to setup the | |
421 // rsp. | |
422 // | |
423 // rax: exception oop | |
424 | |
425 address generate_catch_exception() { | |
426 StubCodeMark mark(this, "StubRoutines", "catch_exception"); | |
427 address start = __ pc(); | |
428 | |
429 // same as in generate_call_stub(): | |
430 const Address rsp_after_call(rbp, rsp_after_call_off * wordSize); | |
431 const Address thread (rbp, thread_off * wordSize); | |
432 | |
433 #ifdef ASSERT | |
434 // verify that threads correspond | |
435 { | |
436 Label L, S; | |
304 | 437 __ cmpptr(r15_thread, thread); |
0 | 438 __ jcc(Assembler::notEqual, S); |
439 __ get_thread(rbx); | |
304 | 440 __ cmpptr(r15_thread, rbx); |
0 | 441 __ jcc(Assembler::equal, L); |
442 __ bind(S); | |
443 __ stop("StubRoutines::catch_exception: threads must correspond"); | |
444 __ bind(L); | |
445 } | |
446 #endif | |
447 | |
448 // set pending exception | |
449 __ verify_oop(rax); | |
450 | |
304 | 451 __ movptr(Address(r15_thread, Thread::pending_exception_offset()), rax); |
0 | 452 __ lea(rscratch1, ExternalAddress((address)__FILE__)); |
304 | 453 __ movptr(Address(r15_thread, Thread::exception_file_offset()), rscratch1); |
0 | 454 __ movl(Address(r15_thread, Thread::exception_line_offset()), (int) __LINE__); |
455 | |
456 // complete return to VM | |
457 assert(StubRoutines::_call_stub_return_address != NULL, | |
458 "_call_stub_return_address must have been generated before"); | |
459 __ jump(RuntimeAddress(StubRoutines::_call_stub_return_address)); | |
460 | |
461 return start; | |
462 } | |
463 | |
464 // Continuation point for runtime calls returning with a pending | |
465 // exception. The pending exception check happened in the runtime | |
466 // or native call stub. The pending exception in Thread is | |
467 // converted into a Java-level exception. | |
468 // | |
469 // Contract with Java-level exception handlers: | |
470 // rax: exception | |
471 // rdx: throwing pc | |
472 // | |
473 // NOTE: At entry of this stub, exception-pc must be on stack !! | |
474 | |
475 address generate_forward_exception() { | |
476 StubCodeMark mark(this, "StubRoutines", "forward exception"); | |
477 address start = __ pc(); | |
478 | |
479 // Upon entry, the sp points to the return address returning into | |
480 // Java (interpreted or compiled) code; i.e., the return address | |
481 // becomes the throwing pc. | |
482 // | |
483 // Arguments pushed before the runtime call are still on the stack | |
484 // but the exception handler will reset the stack pointer -> | |
485 // ignore them. A potential result in registers can be ignored as | |
486 // well. | |
487 | |
488 #ifdef ASSERT | |
489 // make sure this code is only executed if there is a pending exception | |
490 { | |
491 Label L; | |
304 | 492 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL); |
0 | 493 __ jcc(Assembler::notEqual, L); |
494 __ stop("StubRoutines::forward exception: no pending exception (1)"); | |
495 __ bind(L); | |
496 } | |
497 #endif | |
498 | |
499 // compute exception handler into rbx | |
304 | 500 __ movptr(c_rarg0, Address(rsp, 0)); |
0 | 501 BLOCK_COMMENT("call exception_handler_for_return_address"); |
502 __ call_VM_leaf(CAST_FROM_FN_PTR(address, | |
503 SharedRuntime::exception_handler_for_return_address), | |
1295 | 504 r15_thread, c_rarg0); |
304 | 505 __ mov(rbx, rax); |
0 | 506 |
507 // setup rax & rdx, remove return address & clear pending exception | |
304 | 508 __ pop(rdx); |
509 __ movptr(rax, Address(r15_thread, Thread::pending_exception_offset())); | |
512
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510 __ movptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
0 | 511 |
512 #ifdef ASSERT | |
513 // make sure exception is set | |
514 { | |
515 Label L; | |
304 | 516 __ testptr(rax, rax); |
0 | 517 __ jcc(Assembler::notEqual, L); |
518 __ stop("StubRoutines::forward exception: no pending exception (2)"); | |
519 __ bind(L); | |
520 } | |
521 #endif | |
522 | |
523 // continue at exception handler (return address removed) | |
524 // rax: exception | |
525 // rbx: exception handler | |
526 // rdx: throwing pc | |
527 __ verify_oop(rax); | |
528 __ jmp(rbx); | |
529 | |
530 return start; | |
531 } | |
532 | |
533 // Support for jint atomic::xchg(jint exchange_value, volatile jint* dest) | |
534 // | |
535 // Arguments : | |
536 // c_rarg0: exchange_value | |
537 // c_rarg0: dest | |
538 // | |
539 // Result: | |
540 // *dest <- ex, return (orig *dest) | |
541 address generate_atomic_xchg() { | |
542 StubCodeMark mark(this, "StubRoutines", "atomic_xchg"); | |
543 address start = __ pc(); | |
544 | |
545 __ movl(rax, c_rarg0); // Copy to eax we need a return value anyhow | |
546 __ xchgl(rax, Address(c_rarg1, 0)); // automatic LOCK | |
547 __ ret(0); | |
548 | |
549 return start; | |
550 } | |
551 | |
552 // Support for intptr_t atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) | |
553 // | |
554 // Arguments : | |
555 // c_rarg0: exchange_value | |
556 // c_rarg1: dest | |
557 // | |
558 // Result: | |
559 // *dest <- ex, return (orig *dest) | |
560 address generate_atomic_xchg_ptr() { | |
561 StubCodeMark mark(this, "StubRoutines", "atomic_xchg_ptr"); | |
562 address start = __ pc(); | |
563 | |
304 | 564 __ movptr(rax, c_rarg0); // Copy to eax we need a return value anyhow |
565 __ xchgptr(rax, Address(c_rarg1, 0)); // automatic LOCK | |
0 | 566 __ ret(0); |
567 | |
568 return start; | |
569 } | |
570 | |
571 // Support for jint atomic::atomic_cmpxchg(jint exchange_value, volatile jint* dest, | |
572 // jint compare_value) | |
573 // | |
574 // Arguments : | |
575 // c_rarg0: exchange_value | |
576 // c_rarg1: dest | |
577 // c_rarg2: compare_value | |
578 // | |
579 // Result: | |
580 // if ( compare_value == *dest ) { | |
581 // *dest = exchange_value | |
582 // return compare_value; | |
583 // else | |
584 // return *dest; | |
585 address generate_atomic_cmpxchg() { | |
586 StubCodeMark mark(this, "StubRoutines", "atomic_cmpxchg"); | |
587 address start = __ pc(); | |
588 | |
589 __ movl(rax, c_rarg2); | |
590 if ( os::is_MP() ) __ lock(); | |
591 __ cmpxchgl(c_rarg0, Address(c_rarg1, 0)); | |
592 __ ret(0); | |
593 | |
594 return start; | |
595 } | |
596 | |
597 // Support for jint atomic::atomic_cmpxchg_long(jlong exchange_value, | |
598 // volatile jlong* dest, | |
599 // jlong compare_value) | |
600 // Arguments : | |
601 // c_rarg0: exchange_value | |
602 // c_rarg1: dest | |
603 // c_rarg2: compare_value | |
604 // | |
605 // Result: | |
606 // if ( compare_value == *dest ) { | |
607 // *dest = exchange_value | |
608 // return compare_value; | |
609 // else | |
610 // return *dest; | |
611 address generate_atomic_cmpxchg_long() { | |
612 StubCodeMark mark(this, "StubRoutines", "atomic_cmpxchg_long"); | |
613 address start = __ pc(); | |
614 | |
615 __ movq(rax, c_rarg2); | |
616 if ( os::is_MP() ) __ lock(); | |
617 __ cmpxchgq(c_rarg0, Address(c_rarg1, 0)); | |
618 __ ret(0); | |
619 | |
620 return start; | |
621 } | |
622 | |
623 // Support for jint atomic::add(jint add_value, volatile jint* dest) | |
624 // | |
625 // Arguments : | |
626 // c_rarg0: add_value | |
627 // c_rarg1: dest | |
628 // | |
629 // Result: | |
630 // *dest += add_value | |
631 // return *dest; | |
632 address generate_atomic_add() { | |
633 StubCodeMark mark(this, "StubRoutines", "atomic_add"); | |
634 address start = __ pc(); | |
635 | |
636 __ movl(rax, c_rarg0); | |
637 if ( os::is_MP() ) __ lock(); | |
638 __ xaddl(Address(c_rarg1, 0), c_rarg0); | |
639 __ addl(rax, c_rarg0); | |
640 __ ret(0); | |
641 | |
642 return start; | |
643 } | |
644 | |
645 // Support for intptr_t atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) | |
646 // | |
647 // Arguments : | |
648 // c_rarg0: add_value | |
649 // c_rarg1: dest | |
650 // | |
651 // Result: | |
652 // *dest += add_value | |
653 // return *dest; | |
654 address generate_atomic_add_ptr() { | |
655 StubCodeMark mark(this, "StubRoutines", "atomic_add_ptr"); | |
656 address start = __ pc(); | |
657 | |
304 | 658 __ movptr(rax, c_rarg0); // Copy to eax we need a return value anyhow |
0 | 659 if ( os::is_MP() ) __ lock(); |
304 | 660 __ xaddptr(Address(c_rarg1, 0), c_rarg0); |
661 __ addptr(rax, c_rarg0); | |
0 | 662 __ ret(0); |
663 | |
664 return start; | |
665 } | |
666 | |
667 // Support for intptr_t OrderAccess::fence() | |
668 // | |
669 // Arguments : | |
670 // | |
671 // Result: | |
672 address generate_orderaccess_fence() { | |
673 StubCodeMark mark(this, "StubRoutines", "orderaccess_fence"); | |
674 address start = __ pc(); | |
671
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675 __ membar(Assembler::StoreLoad); |
0 | 676 __ ret(0); |
677 | |
678 return start; | |
679 } | |
680 | |
681 // Support for intptr_t get_previous_fp() | |
682 // | |
683 // This routine is used to find the previous frame pointer for the | |
684 // caller (current_frame_guess). This is used as part of debugging | |
685 // ps() is seemingly lost trying to find frames. | |
686 // This code assumes that caller current_frame_guess) has a frame. | |
687 address generate_get_previous_fp() { | |
688 StubCodeMark mark(this, "StubRoutines", "get_previous_fp"); | |
689 const Address old_fp(rbp, 0); | |
690 const Address older_fp(rax, 0); | |
691 address start = __ pc(); | |
692 | |
693 __ enter(); | |
304 | 694 __ movptr(rax, old_fp); // callers fp |
695 __ movptr(rax, older_fp); // the frame for ps() | |
696 __ pop(rbp); | |
0 | 697 __ ret(0); |
698 | |
699 return start; | |
700 } | |
701 | |
5903
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702 // Support for intptr_t get_previous_sp() |
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703 // |
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704 // This routine is used to find the previous stack pointer for the |
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705 // caller. |
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706 address generate_get_previous_sp() { |
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707 StubCodeMark mark(this, "StubRoutines", "get_previous_sp"); |
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708 address start = __ pc(); |
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709 |
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710 __ movptr(rax, rsp); |
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711 __ addptr(rax, 8); // return address is at the top of the stack. |
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712 __ ret(0); |
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713 |
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714 return start; |
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715 } |
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716 |
0 | 717 //---------------------------------------------------------------------------------------------------- |
718 // Support for void verify_mxcsr() | |
719 // | |
720 // This routine is used with -Xcheck:jni to verify that native | |
721 // JNI code does not return to Java code without restoring the | |
722 // MXCSR register to our expected state. | |
723 | |
724 address generate_verify_mxcsr() { | |
725 StubCodeMark mark(this, "StubRoutines", "verify_mxcsr"); | |
726 address start = __ pc(); | |
727 | |
728 const Address mxcsr_save(rsp, 0); | |
729 | |
730 if (CheckJNICalls) { | |
731 Label ok_ret; | |
304 | 732 __ push(rax); |
733 __ subptr(rsp, wordSize); // allocate a temp location | |
0 | 734 __ stmxcsr(mxcsr_save); |
735 __ movl(rax, mxcsr_save); | |
736 __ andl(rax, MXCSR_MASK); // Only check control and mask bits | |
304 | 737 __ cmpl(rax, *(int *)(StubRoutines::x86::mxcsr_std())); |
0 | 738 __ jcc(Assembler::equal, ok_ret); |
739 | |
740 __ warn("MXCSR changed by native JNI code, use -XX:+RestoreMXCSROnJNICall"); | |
741 | |
304 | 742 __ ldmxcsr(ExternalAddress(StubRoutines::x86::mxcsr_std())); |
0 | 743 |
744 __ bind(ok_ret); | |
304 | 745 __ addptr(rsp, wordSize); |
746 __ pop(rax); | |
0 | 747 } |
748 | |
749 __ ret(0); | |
750 | |
751 return start; | |
752 } | |
753 | |
754 address generate_f2i_fixup() { | |
755 StubCodeMark mark(this, "StubRoutines", "f2i_fixup"); | |
756 Address inout(rsp, 5 * wordSize); // return address + 4 saves | |
757 | |
758 address start = __ pc(); | |
759 | |
760 Label L; | |
761 | |
304 | 762 __ push(rax); |
763 __ push(c_rarg3); | |
764 __ push(c_rarg2); | |
765 __ push(c_rarg1); | |
0 | 766 |
767 __ movl(rax, 0x7f800000); | |
768 __ xorl(c_rarg3, c_rarg3); | |
769 __ movl(c_rarg2, inout); | |
770 __ movl(c_rarg1, c_rarg2); | |
771 __ andl(c_rarg1, 0x7fffffff); | |
772 __ cmpl(rax, c_rarg1); // NaN? -> 0 | |
773 __ jcc(Assembler::negative, L); | |
774 __ testl(c_rarg2, c_rarg2); // signed ? min_jint : max_jint | |
775 __ movl(c_rarg3, 0x80000000); | |
776 __ movl(rax, 0x7fffffff); | |
777 __ cmovl(Assembler::positive, c_rarg3, rax); | |
778 | |
779 __ bind(L); | |
304 | 780 __ movptr(inout, c_rarg3); |
781 | |
782 __ pop(c_rarg1); | |
783 __ pop(c_rarg2); | |
784 __ pop(c_rarg3); | |
785 __ pop(rax); | |
0 | 786 |
787 __ ret(0); | |
788 | |
789 return start; | |
790 } | |
791 | |
792 address generate_f2l_fixup() { | |
793 StubCodeMark mark(this, "StubRoutines", "f2l_fixup"); | |
794 Address inout(rsp, 5 * wordSize); // return address + 4 saves | |
795 address start = __ pc(); | |
796 | |
797 Label L; | |
798 | |
304 | 799 __ push(rax); |
800 __ push(c_rarg3); | |
801 __ push(c_rarg2); | |
802 __ push(c_rarg1); | |
0 | 803 |
804 __ movl(rax, 0x7f800000); | |
805 __ xorl(c_rarg3, c_rarg3); | |
806 __ movl(c_rarg2, inout); | |
807 __ movl(c_rarg1, c_rarg2); | |
808 __ andl(c_rarg1, 0x7fffffff); | |
809 __ cmpl(rax, c_rarg1); // NaN? -> 0 | |
810 __ jcc(Assembler::negative, L); | |
811 __ testl(c_rarg2, c_rarg2); // signed ? min_jlong : max_jlong | |
812 __ mov64(c_rarg3, 0x8000000000000000); | |
813 __ mov64(rax, 0x7fffffffffffffff); | |
304 | 814 __ cmov(Assembler::positive, c_rarg3, rax); |
0 | 815 |
816 __ bind(L); | |
304 | 817 __ movptr(inout, c_rarg3); |
818 | |
819 __ pop(c_rarg1); | |
820 __ pop(c_rarg2); | |
821 __ pop(c_rarg3); | |
822 __ pop(rax); | |
0 | 823 |
824 __ ret(0); | |
825 | |
826 return start; | |
827 } | |
828 | |
829 address generate_d2i_fixup() { | |
830 StubCodeMark mark(this, "StubRoutines", "d2i_fixup"); | |
831 Address inout(rsp, 6 * wordSize); // return address + 5 saves | |
832 | |
833 address start = __ pc(); | |
834 | |
835 Label L; | |
836 | |
304 | 837 __ push(rax); |
838 __ push(c_rarg3); | |
839 __ push(c_rarg2); | |
840 __ push(c_rarg1); | |
841 __ push(c_rarg0); | |
0 | 842 |
843 __ movl(rax, 0x7ff00000); | |
844 __ movq(c_rarg2, inout); | |
845 __ movl(c_rarg3, c_rarg2); | |
304 | 846 __ mov(c_rarg1, c_rarg2); |
847 __ mov(c_rarg0, c_rarg2); | |
0 | 848 __ negl(c_rarg3); |
304 | 849 __ shrptr(c_rarg1, 0x20); |
0 | 850 __ orl(c_rarg3, c_rarg2); |
851 __ andl(c_rarg1, 0x7fffffff); | |
852 __ xorl(c_rarg2, c_rarg2); | |
853 __ shrl(c_rarg3, 0x1f); | |
854 __ orl(c_rarg1, c_rarg3); | |
855 __ cmpl(rax, c_rarg1); | |
856 __ jcc(Assembler::negative, L); // NaN -> 0 | |
304 | 857 __ testptr(c_rarg0, c_rarg0); // signed ? min_jint : max_jint |
0 | 858 __ movl(c_rarg2, 0x80000000); |
859 __ movl(rax, 0x7fffffff); | |
304 | 860 __ cmov(Assembler::positive, c_rarg2, rax); |
0 | 861 |
862 __ bind(L); | |
304 | 863 __ movptr(inout, c_rarg2); |
864 | |
865 __ pop(c_rarg0); | |
866 __ pop(c_rarg1); | |
867 __ pop(c_rarg2); | |
868 __ pop(c_rarg3); | |
869 __ pop(rax); | |
0 | 870 |
871 __ ret(0); | |
872 | |
873 return start; | |
874 } | |
875 | |
876 address generate_d2l_fixup() { | |
877 StubCodeMark mark(this, "StubRoutines", "d2l_fixup"); | |
878 Address inout(rsp, 6 * wordSize); // return address + 5 saves | |
879 | |
880 address start = __ pc(); | |
881 | |
882 Label L; | |
883 | |
304 | 884 __ push(rax); |
885 __ push(c_rarg3); | |
886 __ push(c_rarg2); | |
887 __ push(c_rarg1); | |
888 __ push(c_rarg0); | |
0 | 889 |
890 __ movl(rax, 0x7ff00000); | |
891 __ movq(c_rarg2, inout); | |
892 __ movl(c_rarg3, c_rarg2); | |
304 | 893 __ mov(c_rarg1, c_rarg2); |
894 __ mov(c_rarg0, c_rarg2); | |
0 | 895 __ negl(c_rarg3); |
304 | 896 __ shrptr(c_rarg1, 0x20); |
0 | 897 __ orl(c_rarg3, c_rarg2); |
898 __ andl(c_rarg1, 0x7fffffff); | |
899 __ xorl(c_rarg2, c_rarg2); | |
900 __ shrl(c_rarg3, 0x1f); | |
901 __ orl(c_rarg1, c_rarg3); | |
902 __ cmpl(rax, c_rarg1); | |
903 __ jcc(Assembler::negative, L); // NaN -> 0 | |
904 __ testq(c_rarg0, c_rarg0); // signed ? min_jlong : max_jlong | |
905 __ mov64(c_rarg2, 0x8000000000000000); | |
906 __ mov64(rax, 0x7fffffffffffffff); | |
907 __ cmovq(Assembler::positive, c_rarg2, rax); | |
908 | |
909 __ bind(L); | |
910 __ movq(inout, c_rarg2); | |
911 | |
304 | 912 __ pop(c_rarg0); |
913 __ pop(c_rarg1); | |
914 __ pop(c_rarg2); | |
915 __ pop(c_rarg3); | |
916 __ pop(rax); | |
0 | 917 |
918 __ ret(0); | |
919 | |
920 return start; | |
921 } | |
922 | |
923 address generate_fp_mask(const char *stub_name, int64_t mask) { | |
1365 | 924 __ align(CodeEntryAlignment); |
0 | 925 StubCodeMark mark(this, "StubRoutines", stub_name); |
926 address start = __ pc(); | |
927 | |
928 __ emit_data64( mask, relocInfo::none ); | |
929 __ emit_data64( mask, relocInfo::none ); | |
930 | |
931 return start; | |
932 } | |
933 | |
934 // The following routine generates a subroutine to throw an | |
935 // asynchronous UnknownError when an unsafe access gets a fault that | |
936 // could not be reasonably prevented by the programmer. (Example: | |
937 // SIGBUS/OBJERR.) | |
938 address generate_handler_for_unsafe_access() { | |
939 StubCodeMark mark(this, "StubRoutines", "handler_for_unsafe_access"); | |
940 address start = __ pc(); | |
941 | |
304 | 942 __ push(0); // hole for return address-to-be |
943 __ pusha(); // push registers | |
0 | 944 Address next_pc(rsp, RegisterImpl::number_of_registers * BytesPerWord); |
945 | |
3937 | 946 // FIXME: this probably needs alignment logic |
947 | |
304 | 948 __ subptr(rsp, frame::arg_reg_save_area_bytes); |
0 | 949 BLOCK_COMMENT("call handle_unsafe_access"); |
950 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, handle_unsafe_access))); | |
304 | 951 __ addptr(rsp, frame::arg_reg_save_area_bytes); |
952 | |
953 __ movptr(next_pc, rax); // stuff next address | |
954 __ popa(); | |
0 | 955 __ ret(0); // jump to next address |
956 | |
957 return start; | |
958 } | |
959 | |
960 // Non-destructive plausibility checks for oops | |
961 // | |
962 // Arguments: | |
963 // all args on stack! | |
964 // | |
965 // Stack after saving c_rarg3: | |
966 // [tos + 0]: saved c_rarg3 | |
967 // [tos + 1]: saved c_rarg2 | |
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968 // [tos + 2]: saved r12 (several TemplateTable methods use it) |
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969 // [tos + 3]: saved flags |
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970 // [tos + 4]: return address |
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971 // * [tos + 5]: error message (char*) |
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972 // * [tos + 6]: object to verify (oop) |
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973 // * [tos + 7]: saved rax - saved by caller and bashed |
1583 | 974 // * [tos + 8]: saved r10 (rscratch1) - saved by caller |
0 | 975 // * = popped on exit |
976 address generate_verify_oop() { | |
977 StubCodeMark mark(this, "StubRoutines", "verify_oop"); | |
978 address start = __ pc(); | |
979 | |
980 Label exit, error; | |
981 | |
304 | 982 __ pushf(); |
0 | 983 __ incrementl(ExternalAddress((address) StubRoutines::verify_oop_count_addr())); |
984 | |
304 | 985 __ push(r12); |
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986 |
0 | 987 // save c_rarg2 and c_rarg3 |
304 | 988 __ push(c_rarg2); |
989 __ push(c_rarg3); | |
0 | 990 |
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991 enum { |
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992 // After previous pushes. |
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993 oop_to_verify = 6 * wordSize, |
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994 saved_rax = 7 * wordSize, |
1583 | 995 saved_r10 = 8 * wordSize, |
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996 |
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997 // Before the call to MacroAssembler::debug(), see below. |
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998 return_addr = 16 * wordSize, |
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999 error_msg = 17 * wordSize |
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1000 }; |
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1001 |
0 | 1002 // get object |
304 | 1003 __ movptr(rax, Address(rsp, oop_to_verify)); |
0 | 1004 |
1005 // make sure object is 'reasonable' | |
304 | 1006 __ testptr(rax, rax); |
0 | 1007 __ jcc(Assembler::zero, exit); // if obj is NULL it is OK |
1008 // Check if the oop is in the right area of memory | |
304 | 1009 __ movptr(c_rarg2, rax); |
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1010 __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_mask()); |
304 | 1011 __ andptr(c_rarg2, c_rarg3); |
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1012 __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_bits()); |
304 | 1013 __ cmpptr(c_rarg2, c_rarg3); |
0 | 1014 __ jcc(Assembler::notZero, error); |
1015 | |
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1016 // set r12 to heapbase for load_klass() |
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1017 __ reinit_heapbase(); |
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1018 |
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1019 // make sure klass is 'reasonable', which is not zero. |
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1020 __ load_klass(rax, rax); // get klass |
304 | 1021 __ testptr(rax, rax); |
0 | 1022 __ jcc(Assembler::zero, error); // if klass is NULL it is broken |
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1023 // TODO: Future assert that klass is lower 4g memory for UseCompressedKlassPointers |
0 | 1024 |
1025 // return if everything seems ok | |
1026 __ bind(exit); | |
304 | 1027 __ movptr(rax, Address(rsp, saved_rax)); // get saved rax back |
1583 | 1028 __ movptr(rscratch1, Address(rsp, saved_r10)); // get saved r10 back |
304 | 1029 __ pop(c_rarg3); // restore c_rarg3 |
1030 __ pop(c_rarg2); // restore c_rarg2 | |
1031 __ pop(r12); // restore r12 | |
1032 __ popf(); // restore flags | |
1583 | 1033 __ ret(4 * wordSize); // pop caller saved stuff |
0 | 1034 |
1035 // handle errors | |
1036 __ bind(error); | |
304 | 1037 __ movptr(rax, Address(rsp, saved_rax)); // get saved rax back |
1583 | 1038 __ movptr(rscratch1, Address(rsp, saved_r10)); // get saved r10 back |
304 | 1039 __ pop(c_rarg3); // get saved c_rarg3 back |
1040 __ pop(c_rarg2); // get saved c_rarg2 back | |
1041 __ pop(r12); // get saved r12 back | |
1042 __ popf(); // get saved flags off stack -- | |
0 | 1043 // will be ignored |
1044 | |
304 | 1045 __ pusha(); // push registers |
0 | 1046 // (rip is already |
1047 // already pushed) | |
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1048 // debug(char* msg, int64_t pc, int64_t regs[]) |
0 | 1049 // We've popped the registers we'd saved (c_rarg3, c_rarg2 and flags), and |
1050 // pushed all the registers, so now the stack looks like: | |
1051 // [tos + 0] 16 saved registers | |
1052 // [tos + 16] return address | |
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1053 // * [tos + 17] error message (char*) |
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1054 // * [tos + 18] object to verify (oop) |
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1055 // * [tos + 19] saved rax - saved by caller and bashed |
1583 | 1056 // * [tos + 20] saved r10 (rscratch1) - saved by caller |
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1057 // * = popped on exit |
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1058 |
304 | 1059 __ movptr(c_rarg0, Address(rsp, error_msg)); // pass address of error message |
1060 __ movptr(c_rarg1, Address(rsp, return_addr)); // pass return address | |
1061 __ movq(c_rarg2, rsp); // pass address of regs on stack | |
1062 __ mov(r12, rsp); // remember rsp | |
1063 __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows | |
1064 __ andptr(rsp, -16); // align stack as required by ABI | |
0 | 1065 BLOCK_COMMENT("call MacroAssembler::debug"); |
304 | 1066 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, MacroAssembler::debug64))); |
1067 __ mov(rsp, r12); // restore rsp | |
1068 __ popa(); // pop registers (includes r12) | |
1583 | 1069 __ ret(4 * wordSize); // pop caller saved stuff |
0 | 1070 |
1071 return start; | |
1072 } | |
1073 | |
1074 // | |
1075 // Verify that a register contains clean 32-bits positive value | |
1076 // (high 32-bits are 0) so it could be used in 64-bits shifts. | |
1077 // | |
1078 // Input: | |
1079 // Rint - 32-bits value | |
1080 // Rtmp - scratch | |
1081 // | |
1082 void assert_clean_int(Register Rint, Register Rtmp) { | |
1083 #ifdef ASSERT | |
1084 Label L; | |
1085 assert_different_registers(Rtmp, Rint); | |
1086 __ movslq(Rtmp, Rint); | |
1087 __ cmpq(Rtmp, Rint); | |
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1088 __ jcc(Assembler::equal, L); |
0 | 1089 __ stop("high 32-bits of int value are not 0"); |
1090 __ bind(L); | |
1091 #endif | |
1092 } | |
1093 | |
1094 // Generate overlap test for array copy stubs | |
1095 // | |
1096 // Input: | |
1097 // c_rarg0 - from | |
1098 // c_rarg1 - to | |
1099 // c_rarg2 - element count | |
1100 // | |
1101 // Output: | |
1102 // rax - &from[element count - 1] | |
1103 // | |
1104 void array_overlap_test(address no_overlap_target, Address::ScaleFactor sf) { | |
1105 assert(no_overlap_target != NULL, "must be generated"); | |
1106 array_overlap_test(no_overlap_target, NULL, sf); | |
1107 } | |
1108 void array_overlap_test(Label& L_no_overlap, Address::ScaleFactor sf) { | |
1109 array_overlap_test(NULL, &L_no_overlap, sf); | |
1110 } | |
1111 void array_overlap_test(address no_overlap_target, Label* NOLp, Address::ScaleFactor sf) { | |
1112 const Register from = c_rarg0; | |
1113 const Register to = c_rarg1; | |
1114 const Register count = c_rarg2; | |
1115 const Register end_from = rax; | |
1116 | |
304 | 1117 __ cmpptr(to, from); |
1118 __ lea(end_from, Address(from, count, sf, 0)); | |
0 | 1119 if (NOLp == NULL) { |
1120 ExternalAddress no_overlap(no_overlap_target); | |
1121 __ jump_cc(Assembler::belowEqual, no_overlap); | |
304 | 1122 __ cmpptr(to, end_from); |
0 | 1123 __ jump_cc(Assembler::aboveEqual, no_overlap); |
1124 } else { | |
1125 __ jcc(Assembler::belowEqual, (*NOLp)); | |
304 | 1126 __ cmpptr(to, end_from); |
0 | 1127 __ jcc(Assembler::aboveEqual, (*NOLp)); |
1128 } | |
1129 } | |
1130 | |
1131 // Shuffle first three arg regs on Windows into Linux/Solaris locations. | |
1132 // | |
1133 // Outputs: | |
1134 // rdi - rcx | |
1135 // rsi - rdx | |
1136 // rdx - r8 | |
1137 // rcx - r9 | |
1138 // | |
1139 // Registers r9 and r10 are used to save rdi and rsi on Windows, which latter | |
1140 // are non-volatile. r9 and r10 should not be used by the caller. | |
1141 // | |
1142 void setup_arg_regs(int nargs = 3) { | |
1143 const Register saved_rdi = r9; | |
1144 const Register saved_rsi = r10; | |
1145 assert(nargs == 3 || nargs == 4, "else fix"); | |
1146 #ifdef _WIN64 | |
1147 assert(c_rarg0 == rcx && c_rarg1 == rdx && c_rarg2 == r8 && c_rarg3 == r9, | |
1148 "unexpected argument registers"); | |
1149 if (nargs >= 4) | |
304 | 1150 __ mov(rax, r9); // r9 is also saved_rdi |
1151 __ movptr(saved_rdi, rdi); | |
1152 __ movptr(saved_rsi, rsi); | |
1153 __ mov(rdi, rcx); // c_rarg0 | |
1154 __ mov(rsi, rdx); // c_rarg1 | |
1155 __ mov(rdx, r8); // c_rarg2 | |
0 | 1156 if (nargs >= 4) |
304 | 1157 __ mov(rcx, rax); // c_rarg3 (via rax) |
0 | 1158 #else |
1159 assert(c_rarg0 == rdi && c_rarg1 == rsi && c_rarg2 == rdx && c_rarg3 == rcx, | |
1160 "unexpected argument registers"); | |
1161 #endif | |
1162 } | |
1163 | |
1164 void restore_arg_regs() { | |
1165 const Register saved_rdi = r9; | |
1166 const Register saved_rsi = r10; | |
1167 #ifdef _WIN64 | |
304 | 1168 __ movptr(rdi, saved_rdi); |
1169 __ movptr(rsi, saved_rsi); | |
0 | 1170 #endif |
1171 } | |
1172 | |
1173 // Generate code for an array write pre barrier | |
1174 // | |
1175 // addr - starting address | |
2324 | 1176 // count - element count |
1177 // tmp - scratch register | |
0 | 1178 // |
1179 // Destroy no registers! | |
1180 // | |
2324 | 1181 void gen_write_ref_array_pre_barrier(Register addr, Register count, bool dest_uninitialized) { |
0 | 1182 BarrierSet* bs = Universe::heap()->barrier_set(); |
1183 switch (bs->kind()) { | |
1184 case BarrierSet::G1SATBCT: | |
1185 case BarrierSet::G1SATBCTLogging: | |
2324 | 1186 // With G1, don't generate the call if we statically know that the target in uninitialized |
1187 if (!dest_uninitialized) { | |
1188 __ pusha(); // push registers | |
1189 if (count == c_rarg0) { | |
1190 if (addr == c_rarg1) { | |
1191 // exactly backwards!! | |
1192 __ xchgptr(c_rarg1, c_rarg0); | |
1193 } else { | |
1194 __ movptr(c_rarg1, count); | |
1195 __ movptr(c_rarg0, addr); | |
1196 } | |
1197 } else { | |
1198 __ movptr(c_rarg0, addr); | |
1199 __ movptr(c_rarg1, count); | |
1200 } | |
1201 __ call_VM_leaf(CAST_FROM_FN_PTR(address, BarrierSet::static_write_ref_array_pre), 2); | |
1202 __ popa(); | |
0 | 1203 } |
2324 | 1204 break; |
0 | 1205 case BarrierSet::CardTableModRef: |
1206 case BarrierSet::CardTableExtension: | |
1207 case BarrierSet::ModRef: | |
1208 break; | |
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1209 default: |
0 | 1210 ShouldNotReachHere(); |
1211 | |
1212 } | |
1213 } | |
1214 | |
1215 // | |
1216 // Generate code for an array write post barrier | |
1217 // | |
1218 // Input: | |
1219 // start - register containing starting address of destination array | |
1220 // end - register containing ending address of destination array | |
1221 // scratch - scratch register | |
1222 // | |
1223 // The input registers are overwritten. | |
1224 // The ending address is inclusive. | |
1225 void gen_write_ref_array_post_barrier(Register start, Register end, Register scratch) { | |
1226 assert_different_registers(start, end, scratch); | |
1227 BarrierSet* bs = Universe::heap()->barrier_set(); | |
1228 switch (bs->kind()) { | |
1229 case BarrierSet::G1SATBCT: | |
1230 case BarrierSet::G1SATBCTLogging: | |
1231 | |
1232 { | |
304 | 1233 __ pusha(); // push registers (overkill) |
0 | 1234 // must compute element count unless barrier set interface is changed (other platforms supply count) |
1235 assert_different_registers(start, end, scratch); | |
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1236 __ lea(scratch, Address(end, BytesPerHeapOop)); |
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1237 __ subptr(scratch, start); // subtract start to get #bytes |
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1238 __ shrptr(scratch, LogBytesPerHeapOop); // convert to element count |
304 | 1239 __ mov(c_rarg0, start); |
1240 __ mov(c_rarg1, scratch); | |
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1241 __ call_VM_leaf(CAST_FROM_FN_PTR(address, BarrierSet::static_write_ref_array_post), 2); |
304 | 1242 __ popa(); |
0 | 1243 } |
1244 break; | |
1245 case BarrierSet::CardTableModRef: | |
1246 case BarrierSet::CardTableExtension: | |
1247 { | |
1248 CardTableModRefBS* ct = (CardTableModRefBS*)bs; | |
1249 assert(sizeof(*ct->byte_map_base) == sizeof(jbyte), "adjust this code"); | |
1250 | |
1251 Label L_loop; | |
1252 | |
304 | 1253 __ shrptr(start, CardTableModRefBS::card_shift); |
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1254 __ addptr(end, BytesPerHeapOop); |
304 | 1255 __ shrptr(end, CardTableModRefBS::card_shift); |
1256 __ subptr(end, start); // number of bytes to copy | |
0 | 1257 |
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1258 intptr_t disp = (intptr_t) ct->byte_map_base; |
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1259 if (Assembler::is_simm32(disp)) { |
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1260 Address cardtable(noreg, noreg, Address::no_scale, disp); |
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1261 __ lea(scratch, cardtable); |
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1262 } else { |
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1263 ExternalAddress cardtable((address)disp); |
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1264 __ lea(scratch, cardtable); |
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1265 } |
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1266 |
0 | 1267 const Register count = end; // 'end' register contains bytes count now |
304 | 1268 __ addptr(start, scratch); |
0 | 1269 __ BIND(L_loop); |
1270 __ movb(Address(start, count, Address::times_1), 0); | |
304 | 1271 __ decrement(count); |
0 | 1272 __ jcc(Assembler::greaterEqual, L_loop); |
1273 } | |
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1274 break; |
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1275 default: |
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1276 ShouldNotReachHere(); |
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1277 |
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1278 } |
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1279 } |
0 | 1280 |
405 | 1281 |
0 | 1282 // Copy big chunks forward |
1283 // | |
1284 // Inputs: | |
1285 // end_from - source arrays end address | |
1286 // end_to - destination array end address | |
1287 // qword_count - 64-bits element count, negative | |
1288 // to - scratch | |
1289 // L_copy_32_bytes - entry label | |
1290 // L_copy_8_bytes - exit label | |
1291 // | |
1292 void copy_32_bytes_forward(Register end_from, Register end_to, | |
1293 Register qword_count, Register to, | |
1294 Label& L_copy_32_bytes, Label& L_copy_8_bytes) { | |
1295 DEBUG_ONLY(__ stop("enter at entry label, not here")); | |
1296 Label L_loop; | |
1365 | 1297 __ align(OptoLoopAlignment); |
0 | 1298 __ BIND(L_loop); |
405 | 1299 if(UseUnalignedLoadStores) { |
1300 __ movdqu(xmm0, Address(end_from, qword_count, Address::times_8, -24)); | |
1301 __ movdqu(Address(end_to, qword_count, Address::times_8, -24), xmm0); | |
1302 __ movdqu(xmm1, Address(end_from, qword_count, Address::times_8, - 8)); | |
1303 __ movdqu(Address(end_to, qword_count, Address::times_8, - 8), xmm1); | |
1304 | |
1305 } else { | |
1306 __ movq(to, Address(end_from, qword_count, Address::times_8, -24)); | |
1307 __ movq(Address(end_to, qword_count, Address::times_8, -24), to); | |
1308 __ movq(to, Address(end_from, qword_count, Address::times_8, -16)); | |
1309 __ movq(Address(end_to, qword_count, Address::times_8, -16), to); | |
1310 __ movq(to, Address(end_from, qword_count, Address::times_8, - 8)); | |
1311 __ movq(Address(end_to, qword_count, Address::times_8, - 8), to); | |
1312 __ movq(to, Address(end_from, qword_count, Address::times_8, - 0)); | |
1313 __ movq(Address(end_to, qword_count, Address::times_8, - 0), to); | |
1314 } | |
0 | 1315 __ BIND(L_copy_32_bytes); |
304 | 1316 __ addptr(qword_count, 4); |
0 | 1317 __ jcc(Assembler::lessEqual, L_loop); |
304 | 1318 __ subptr(qword_count, 4); |
0 | 1319 __ jcc(Assembler::less, L_copy_8_bytes); // Copy trailing qwords |
1320 } | |
1321 | |
1322 | |
1323 // Copy big chunks backward | |
1324 // | |
1325 // Inputs: | |
1326 // from - source arrays address | |
1327 // dest - destination array address | |
1328 // qword_count - 64-bits element count | |
1329 // to - scratch | |
1330 // L_copy_32_bytes - entry label | |
1331 // L_copy_8_bytes - exit label | |
1332 // | |
1333 void copy_32_bytes_backward(Register from, Register dest, | |
1334 Register qword_count, Register to, | |
1335 Label& L_copy_32_bytes, Label& L_copy_8_bytes) { | |
1336 DEBUG_ONLY(__ stop("enter at entry label, not here")); | |
1337 Label L_loop; | |
1365 | 1338 __ align(OptoLoopAlignment); |
0 | 1339 __ BIND(L_loop); |
405 | 1340 if(UseUnalignedLoadStores) { |
1341 __ movdqu(xmm0, Address(from, qword_count, Address::times_8, 16)); | |
1342 __ movdqu(Address(dest, qword_count, Address::times_8, 16), xmm0); | |
1343 __ movdqu(xmm1, Address(from, qword_count, Address::times_8, 0)); | |
1344 __ movdqu(Address(dest, qword_count, Address::times_8, 0), xmm1); | |
1345 | |
1346 } else { | |
1347 __ movq(to, Address(from, qword_count, Address::times_8, 24)); | |
1348 __ movq(Address(dest, qword_count, Address::times_8, 24), to); | |
1349 __ movq(to, Address(from, qword_count, Address::times_8, 16)); | |
1350 __ movq(Address(dest, qword_count, Address::times_8, 16), to); | |
1351 __ movq(to, Address(from, qword_count, Address::times_8, 8)); | |
1352 __ movq(Address(dest, qword_count, Address::times_8, 8), to); | |
1353 __ movq(to, Address(from, qword_count, Address::times_8, 0)); | |
1354 __ movq(Address(dest, qword_count, Address::times_8, 0), to); | |
1355 } | |
0 | 1356 __ BIND(L_copy_32_bytes); |
304 | 1357 __ subptr(qword_count, 4); |
0 | 1358 __ jcc(Assembler::greaterEqual, L_loop); |
304 | 1359 __ addptr(qword_count, 4); |
0 | 1360 __ jcc(Assembler::greater, L_copy_8_bytes); // Copy trailing qwords |
1361 } | |
1362 | |
1363 | |
1364 // Arguments: | |
1365 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1366 // ignored | |
1367 // name - stub name string | |
1368 // | |
1369 // Inputs: | |
1370 // c_rarg0 - source array address | |
1371 // c_rarg1 - destination array address | |
1372 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1373 // | |
1374 // If 'from' and/or 'to' are aligned on 4-, 2-, or 1-byte boundaries, | |
1375 // we let the hardware handle it. The one to eight bytes within words, | |
1376 // dwords or qwords that span cache line boundaries will still be loaded | |
1377 // and stored atomically. | |
1378 // | |
1379 // Side Effects: | |
1380 // disjoint_byte_copy_entry is set to the no-overlap entry point | |
1381 // used by generate_conjoint_byte_copy(). | |
1382 // | |
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1383 address generate_disjoint_byte_copy(bool aligned, address* entry, const char *name) { |
0 | 1384 __ align(CodeEntryAlignment); |
1385 StubCodeMark mark(this, "StubRoutines", name); | |
1386 address start = __ pc(); | |
1387 | |
1388 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes, L_copy_2_bytes; | |
1389 Label L_copy_byte, L_exit; | |
1390 const Register from = rdi; // source array address | |
1391 const Register to = rsi; // destination array address | |
1392 const Register count = rdx; // elements count | |
1393 const Register byte_count = rcx; | |
1394 const Register qword_count = count; | |
1395 const Register end_from = from; // source array end address | |
1396 const Register end_to = to; // destination array end address | |
1397 // End pointers are inclusive, and if count is not zero they point | |
1398 // to the last unit copied: end_to[0] := end_from[0] | |
1399 | |
1400 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1401 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1402 | |
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1403 if (entry != NULL) { |
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1404 *entry = __ pc(); |
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1405 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1406 BLOCK_COMMENT("Entry:"); |
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1407 } |
0 | 1408 |
1409 setup_arg_regs(); // from => rdi, to => rsi, count => rdx | |
1410 // r9 and r10 may be used to save non-volatile registers | |
1411 | |
1412 // 'from', 'to' and 'count' are now valid | |
304 | 1413 __ movptr(byte_count, count); |
1414 __ shrptr(count, 3); // count => qword_count | |
0 | 1415 |
1416 // Copy from low to high addresses. Use 'to' as scratch. | |
304 | 1417 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
1418 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
1419 __ negptr(qword_count); // make the count negative | |
0 | 1420 __ jmp(L_copy_32_bytes); |
1421 | |
1422 // Copy trailing qwords | |
1423 __ BIND(L_copy_8_bytes); | |
1424 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
1425 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
304 | 1426 __ increment(qword_count); |
0 | 1427 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1428 | |
1429 // Check for and copy trailing dword | |
1430 __ BIND(L_copy_4_bytes); | |
304 | 1431 __ testl(byte_count, 4); |
0 | 1432 __ jccb(Assembler::zero, L_copy_2_bytes); |
1433 __ movl(rax, Address(end_from, 8)); | |
1434 __ movl(Address(end_to, 8), rax); | |
1435 | |
304 | 1436 __ addptr(end_from, 4); |
1437 __ addptr(end_to, 4); | |
0 | 1438 |
1439 // Check for and copy trailing word | |
1440 __ BIND(L_copy_2_bytes); | |
304 | 1441 __ testl(byte_count, 2); |
0 | 1442 __ jccb(Assembler::zero, L_copy_byte); |
1443 __ movw(rax, Address(end_from, 8)); | |
1444 __ movw(Address(end_to, 8), rax); | |
1445 | |
304 | 1446 __ addptr(end_from, 2); |
1447 __ addptr(end_to, 2); | |
0 | 1448 |
1449 // Check for and copy trailing byte | |
1450 __ BIND(L_copy_byte); | |
304 | 1451 __ testl(byte_count, 1); |
0 | 1452 __ jccb(Assembler::zero, L_exit); |
1453 __ movb(rax, Address(end_from, 8)); | |
1454 __ movb(Address(end_to, 8), rax); | |
1455 | |
1456 __ BIND(L_exit); | |
1457 restore_arg_regs(); | |
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1458 inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 1459 __ xorptr(rax, rax); // return 0 |
0 | 1460 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1461 __ ret(0); | |
1462 | |
1463 // Copy in 32-bytes chunks | |
1464 copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
1465 __ jmp(L_copy_4_bytes); | |
1466 | |
1467 return start; | |
1468 } | |
1469 | |
1470 // Arguments: | |
1471 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1472 // ignored | |
1473 // name - stub name string | |
1474 // | |
1475 // Inputs: | |
1476 // c_rarg0 - source array address | |
1477 // c_rarg1 - destination array address | |
1478 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1479 // | |
1480 // If 'from' and/or 'to' are aligned on 4-, 2-, or 1-byte boundaries, | |
1481 // we let the hardware handle it. The one to eight bytes within words, | |
1482 // dwords or qwords that span cache line boundaries will still be loaded | |
1483 // and stored atomically. | |
1484 // | |
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1485 address generate_conjoint_byte_copy(bool aligned, address nooverlap_target, |
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1486 address* entry, const char *name) { |
0 | 1487 __ align(CodeEntryAlignment); |
1488 StubCodeMark mark(this, "StubRoutines", name); | |
1489 address start = __ pc(); | |
1490 | |
1491 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes, L_copy_2_bytes; | |
1492 const Register from = rdi; // source array address | |
1493 const Register to = rsi; // destination array address | |
1494 const Register count = rdx; // elements count | |
1495 const Register byte_count = rcx; | |
1496 const Register qword_count = count; | |
1497 | |
1498 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1499 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1500 | |
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1501 if (entry != NULL) { |
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1502 *entry = __ pc(); |
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1503 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1504 BLOCK_COMMENT("Entry:"); |
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1505 } |
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1506 |
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1507 array_overlap_test(nooverlap_target, Address::times_1); |
0 | 1508 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
1509 // r9 and r10 may be used to save non-volatile registers | |
1510 | |
1511 // 'from', 'to' and 'count' are now valid | |
304 | 1512 __ movptr(byte_count, count); |
1513 __ shrptr(count, 3); // count => qword_count | |
0 | 1514 |
1515 // Copy from high to low addresses. | |
1516 | |
1517 // Check for and copy trailing byte | |
304 | 1518 __ testl(byte_count, 1); |
0 | 1519 __ jcc(Assembler::zero, L_copy_2_bytes); |
1520 __ movb(rax, Address(from, byte_count, Address::times_1, -1)); | |
1521 __ movb(Address(to, byte_count, Address::times_1, -1), rax); | |
304 | 1522 __ decrement(byte_count); // Adjust for possible trailing word |
0 | 1523 |
1524 // Check for and copy trailing word | |
1525 __ BIND(L_copy_2_bytes); | |
304 | 1526 __ testl(byte_count, 2); |
0 | 1527 __ jcc(Assembler::zero, L_copy_4_bytes); |
1528 __ movw(rax, Address(from, byte_count, Address::times_1, -2)); | |
1529 __ movw(Address(to, byte_count, Address::times_1, -2), rax); | |
1530 | |
1531 // Check for and copy trailing dword | |
1532 __ BIND(L_copy_4_bytes); | |
304 | 1533 __ testl(byte_count, 4); |
0 | 1534 __ jcc(Assembler::zero, L_copy_32_bytes); |
1535 __ movl(rax, Address(from, qword_count, Address::times_8)); | |
1536 __ movl(Address(to, qword_count, Address::times_8), rax); | |
1537 __ jmp(L_copy_32_bytes); | |
1538 | |
1539 // Copy trailing qwords | |
1540 __ BIND(L_copy_8_bytes); | |
1541 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
1542 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
304 | 1543 __ decrement(qword_count); |
0 | 1544 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1545 | |
1546 restore_arg_regs(); | |
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1547 inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 1548 __ xorptr(rax, rax); // return 0 |
0 | 1549 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1550 __ ret(0); | |
1551 | |
1552 // Copy in 32-bytes chunks | |
1553 copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
1554 | |
1555 restore_arg_regs(); | |
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1556 inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 1557 __ xorptr(rax, rax); // return 0 |
0 | 1558 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1559 __ ret(0); | |
1560 | |
1561 return start; | |
1562 } | |
1563 | |
1564 // Arguments: | |
1565 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1566 // ignored | |
1567 // name - stub name string | |
1568 // | |
1569 // Inputs: | |
1570 // c_rarg0 - source array address | |
1571 // c_rarg1 - destination array address | |
1572 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1573 // | |
1574 // If 'from' and/or 'to' are aligned on 4- or 2-byte boundaries, we | |
1575 // let the hardware handle it. The two or four words within dwords | |
1576 // or qwords that span cache line boundaries will still be loaded | |
1577 // and stored atomically. | |
1578 // | |
1579 // Side Effects: | |
1580 // disjoint_short_copy_entry is set to the no-overlap entry point | |
1581 // used by generate_conjoint_short_copy(). | |
1582 // | |
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1583 address generate_disjoint_short_copy(bool aligned, address *entry, const char *name) { |
0 | 1584 __ align(CodeEntryAlignment); |
1585 StubCodeMark mark(this, "StubRoutines", name); | |
1586 address start = __ pc(); | |
1587 | |
1588 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes,L_copy_2_bytes,L_exit; | |
1589 const Register from = rdi; // source array address | |
1590 const Register to = rsi; // destination array address | |
1591 const Register count = rdx; // elements count | |
1592 const Register word_count = rcx; | |
1593 const Register qword_count = count; | |
1594 const Register end_from = from; // source array end address | |
1595 const Register end_to = to; // destination array end address | |
1596 // End pointers are inclusive, and if count is not zero they point | |
1597 // to the last unit copied: end_to[0] := end_from[0] | |
1598 | |
1599 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1600 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1601 | |
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1602 if (entry != NULL) { |
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1603 *entry = __ pc(); |
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1604 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1605 BLOCK_COMMENT("Entry:"); |
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1606 } |
0 | 1607 |
1608 setup_arg_regs(); // from => rdi, to => rsi, count => rdx | |
1609 // r9 and r10 may be used to save non-volatile registers | |
1610 | |
1611 // 'from', 'to' and 'count' are now valid | |
304 | 1612 __ movptr(word_count, count); |
1613 __ shrptr(count, 2); // count => qword_count | |
0 | 1614 |
1615 // Copy from low to high addresses. Use 'to' as scratch. | |
304 | 1616 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
1617 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
1618 __ negptr(qword_count); | |
0 | 1619 __ jmp(L_copy_32_bytes); |
1620 | |
1621 // Copy trailing qwords | |
1622 __ BIND(L_copy_8_bytes); | |
1623 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
1624 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
304 | 1625 __ increment(qword_count); |
0 | 1626 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1627 | |
1628 // Original 'dest' is trashed, so we can't use it as a | |
1629 // base register for a possible trailing word copy | |
1630 | |
1631 // Check for and copy trailing dword | |
1632 __ BIND(L_copy_4_bytes); | |
304 | 1633 __ testl(word_count, 2); |
0 | 1634 __ jccb(Assembler::zero, L_copy_2_bytes); |
1635 __ movl(rax, Address(end_from, 8)); | |
1636 __ movl(Address(end_to, 8), rax); | |
1637 | |
304 | 1638 __ addptr(end_from, 4); |
1639 __ addptr(end_to, 4); | |
0 | 1640 |
1641 // Check for and copy trailing word | |
1642 __ BIND(L_copy_2_bytes); | |
304 | 1643 __ testl(word_count, 1); |
0 | 1644 __ jccb(Assembler::zero, L_exit); |
1645 __ movw(rax, Address(end_from, 8)); | |
1646 __ movw(Address(end_to, 8), rax); | |
1647 | |
1648 __ BIND(L_exit); | |
1649 restore_arg_regs(); | |
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1650 inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 1651 __ xorptr(rax, rax); // return 0 |
0 | 1652 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1653 __ ret(0); | |
1654 | |
1655 // Copy in 32-bytes chunks | |
1656 copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
1657 __ jmp(L_copy_4_bytes); | |
1658 | |
1659 return start; | |
1660 } | |
1661 | |
1763 | 1662 address generate_fill(BasicType t, bool aligned, const char *name) { |
1663 __ align(CodeEntryAlignment); | |
1664 StubCodeMark mark(this, "StubRoutines", name); | |
1665 address start = __ pc(); | |
1666 | |
1667 BLOCK_COMMENT("Entry:"); | |
1668 | |
1669 const Register to = c_rarg0; // source array address | |
1670 const Register value = c_rarg1; // value | |
1671 const Register count = c_rarg2; // elements count | |
1672 | |
1673 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1674 | |
1675 __ generate_fill(t, aligned, to, value, count, rax, xmm0); | |
1676 | |
1677 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
1678 __ ret(0); | |
1679 return start; | |
1680 } | |
1681 | |
0 | 1682 // Arguments: |
1683 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1684 // ignored | |
1685 // name - stub name string | |
1686 // | |
1687 // Inputs: | |
1688 // c_rarg0 - source array address | |
1689 // c_rarg1 - destination array address | |
1690 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1691 // | |
1692 // If 'from' and/or 'to' are aligned on 4- or 2-byte boundaries, we | |
1693 // let the hardware handle it. The two or four words within dwords | |
1694 // or qwords that span cache line boundaries will still be loaded | |
1695 // and stored atomically. | |
1696 // | |
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1697 address generate_conjoint_short_copy(bool aligned, address nooverlap_target, |
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1698 address *entry, const char *name) { |
0 | 1699 __ align(CodeEntryAlignment); |
1700 StubCodeMark mark(this, "StubRoutines", name); | |
1701 address start = __ pc(); | |
1702 | |
1703 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes; | |
1704 const Register from = rdi; // source array address | |
1705 const Register to = rsi; // destination array address | |
1706 const Register count = rdx; // elements count | |
1707 const Register word_count = rcx; | |
1708 const Register qword_count = count; | |
1709 | |
1710 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1711 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1712 | |
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1713 if (entry != NULL) { |
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1714 *entry = __ pc(); |
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1715 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1716 BLOCK_COMMENT("Entry:"); |
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1717 } |
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1718 |
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1719 array_overlap_test(nooverlap_target, Address::times_2); |
0 | 1720 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
1721 // r9 and r10 may be used to save non-volatile registers | |
1722 | |
1723 // 'from', 'to' and 'count' are now valid | |
304 | 1724 __ movptr(word_count, count); |
1725 __ shrptr(count, 2); // count => qword_count | |
0 | 1726 |
1727 // Copy from high to low addresses. Use 'to' as scratch. | |
1728 | |
1729 // Check for and copy trailing word | |
304 | 1730 __ testl(word_count, 1); |
0 | 1731 __ jccb(Assembler::zero, L_copy_4_bytes); |
1732 __ movw(rax, Address(from, word_count, Address::times_2, -2)); | |
1733 __ movw(Address(to, word_count, Address::times_2, -2), rax); | |
1734 | |
1735 // Check for and copy trailing dword | |
1736 __ BIND(L_copy_4_bytes); | |
304 | 1737 __ testl(word_count, 2); |
0 | 1738 __ jcc(Assembler::zero, L_copy_32_bytes); |
1739 __ movl(rax, Address(from, qword_count, Address::times_8)); | |
1740 __ movl(Address(to, qword_count, Address::times_8), rax); | |
1741 __ jmp(L_copy_32_bytes); | |
1742 | |
1743 // Copy trailing qwords | |
1744 __ BIND(L_copy_8_bytes); | |
1745 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
1746 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
304 | 1747 __ decrement(qword_count); |
0 | 1748 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1749 | |
1750 restore_arg_regs(); | |
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1751 inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 1752 __ xorptr(rax, rax); // return 0 |
0 | 1753 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1754 __ ret(0); | |
1755 | |
1756 // Copy in 32-bytes chunks | |
1757 copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
1758 | |
1759 restore_arg_regs(); | |
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1760 inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 1761 __ xorptr(rax, rax); // return 0 |
0 | 1762 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1763 __ ret(0); | |
1764 | |
1765 return start; | |
1766 } | |
1767 | |
1768 // Arguments: | |
1769 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1770 // ignored | |
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1771 // is_oop - true => oop array, so generate store check code |
0 | 1772 // name - stub name string |
1773 // | |
1774 // Inputs: | |
1775 // c_rarg0 - source array address | |
1776 // c_rarg1 - destination array address | |
1777 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1778 // | |
1779 // If 'from' and/or 'to' are aligned on 4-byte boundaries, we let | |
1780 // the hardware handle it. The two dwords within qwords that span | |
1781 // cache line boundaries will still be loaded and stored atomicly. | |
1782 // | |
1783 // Side Effects: | |
1784 // disjoint_int_copy_entry is set to the no-overlap entry point | |
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1785 // used by generate_conjoint_int_oop_copy(). |
0 | 1786 // |
2324 | 1787 address generate_disjoint_int_oop_copy(bool aligned, bool is_oop, address* entry, |
1788 const char *name, bool dest_uninitialized = false) { | |
0 | 1789 __ align(CodeEntryAlignment); |
1790 StubCodeMark mark(this, "StubRoutines", name); | |
1791 address start = __ pc(); | |
1792 | |
1793 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes, L_exit; | |
1794 const Register from = rdi; // source array address | |
1795 const Register to = rsi; // destination array address | |
1796 const Register count = rdx; // elements count | |
1797 const Register dword_count = rcx; | |
1798 const Register qword_count = count; | |
1799 const Register end_from = from; // source array end address | |
1800 const Register end_to = to; // destination array end address | |
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1801 const Register saved_to = r11; // saved destination array address |
0 | 1802 // End pointers are inclusive, and if count is not zero they point |
1803 // to the last unit copied: end_to[0] := end_from[0] | |
1804 | |
1805 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1806 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1807 | |
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1808 if (entry != NULL) { |
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1809 *entry = __ pc(); |
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1810 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1811 BLOCK_COMMENT("Entry:"); |
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1812 } |
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1813 |
0 | 1814 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
1815 // r9 and r10 may be used to save non-volatile registers | |
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1816 if (is_oop) { |
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1817 __ movq(saved_to, to); |
2324 | 1818 gen_write_ref_array_pre_barrier(to, count, dest_uninitialized); |
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1819 } |
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1820 |
0 | 1821 // 'from', 'to' and 'count' are now valid |
304 | 1822 __ movptr(dword_count, count); |
1823 __ shrptr(count, 1); // count => qword_count | |
0 | 1824 |
1825 // Copy from low to high addresses. Use 'to' as scratch. | |
304 | 1826 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
1827 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
1828 __ negptr(qword_count); | |
0 | 1829 __ jmp(L_copy_32_bytes); |
1830 | |
1831 // Copy trailing qwords | |
1832 __ BIND(L_copy_8_bytes); | |
1833 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
1834 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
304 | 1835 __ increment(qword_count); |
0 | 1836 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1837 | |
1838 // Check for and copy trailing dword | |
1839 __ BIND(L_copy_4_bytes); | |
304 | 1840 __ testl(dword_count, 1); // Only byte test since the value is 0 or 1 |
0 | 1841 __ jccb(Assembler::zero, L_exit); |
1842 __ movl(rax, Address(end_from, 8)); | |
1843 __ movl(Address(end_to, 8), rax); | |
1844 | |
1845 __ BIND(L_exit); | |
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1846 if (is_oop) { |
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1847 __ leaq(end_to, Address(saved_to, dword_count, Address::times_4, -4)); |
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1848 gen_write_ref_array_post_barrier(saved_to, end_to, rax); |
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1849 } |
0 | 1850 restore_arg_regs(); |
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1851 inc_counter_np(SharedRuntime::_jint_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 1852 __ xorptr(rax, rax); // return 0 |
0 | 1853 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1854 __ ret(0); | |
1855 | |
1856 // Copy 32-bytes chunks | |
1857 copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
1858 __ jmp(L_copy_4_bytes); | |
1859 | |
1860 return start; | |
1861 } | |
1862 | |
1863 // Arguments: | |
1864 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1865 // ignored | |
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1866 // is_oop - true => oop array, so generate store check code |
0 | 1867 // name - stub name string |
1868 // | |
1869 // Inputs: | |
1870 // c_rarg0 - source array address | |
1871 // c_rarg1 - destination array address | |
1872 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1873 // | |
1874 // If 'from' and/or 'to' are aligned on 4-byte boundaries, we let | |
1875 // the hardware handle it. The two dwords within qwords that span | |
1876 // cache line boundaries will still be loaded and stored atomicly. | |
1877 // | |
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1878 address generate_conjoint_int_oop_copy(bool aligned, bool is_oop, address nooverlap_target, |
2324 | 1879 address *entry, const char *name, |
1880 bool dest_uninitialized = false) { | |
0 | 1881 __ align(CodeEntryAlignment); |
1882 StubCodeMark mark(this, "StubRoutines", name); | |
1883 address start = __ pc(); | |
1884 | |
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1885 Label L_copy_32_bytes, L_copy_8_bytes, L_copy_2_bytes, L_exit; |
0 | 1886 const Register from = rdi; // source array address |
1887 const Register to = rsi; // destination array address | |
1888 const Register count = rdx; // elements count | |
1889 const Register dword_count = rcx; | |
1890 const Register qword_count = count; | |
1891 | |
1892 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1893 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1894 | |
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1895 if (entry != NULL) { |
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1896 *entry = __ pc(); |
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1897 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1898 BLOCK_COMMENT("Entry:"); |
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1899 } |
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1900 |
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1901 array_overlap_test(nooverlap_target, Address::times_4); |
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1902 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
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1903 // r9 and r10 may be used to save non-volatile registers |
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1904 |
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1905 if (is_oop) { |
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1906 // no registers are destroyed by this call |
2324 | 1907 gen_write_ref_array_pre_barrier(to, count, dest_uninitialized); |
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1908 } |
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1909 |
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1910 assert_clean_int(count, rax); // Make sure 'count' is clean int. |
0 | 1911 // 'from', 'to' and 'count' are now valid |
304 | 1912 __ movptr(dword_count, count); |
1913 __ shrptr(count, 1); // count => qword_count | |
0 | 1914 |
1915 // Copy from high to low addresses. Use 'to' as scratch. | |
1916 | |
1917 // Check for and copy trailing dword | |
304 | 1918 __ testl(dword_count, 1); |
0 | 1919 __ jcc(Assembler::zero, L_copy_32_bytes); |
1920 __ movl(rax, Address(from, dword_count, Address::times_4, -4)); | |
1921 __ movl(Address(to, dword_count, Address::times_4, -4), rax); | |
1922 __ jmp(L_copy_32_bytes); | |
1923 | |
1924 // Copy trailing qwords | |
1925 __ BIND(L_copy_8_bytes); | |
1926 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
1927 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
304 | 1928 __ decrement(qword_count); |
0 | 1929 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1930 | |
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1931 if (is_oop) { |
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1932 __ jmp(L_exit); |
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1933 } |
0 | 1934 restore_arg_regs(); |
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1935 inc_counter_np(SharedRuntime::_jint_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 1936 __ xorptr(rax, rax); // return 0 |
0 | 1937 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1938 __ ret(0); | |
1939 | |
1940 // Copy in 32-bytes chunks | |
1941 copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
1942 | |
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1943 __ bind(L_exit); |
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1944 if (is_oop) { |
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1945 Register end_to = rdx; |
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1946 __ leaq(end_to, Address(to, dword_count, Address::times_4, -4)); |
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1947 gen_write_ref_array_post_barrier(to, end_to, rax); |
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1948 } |
0 | 1949 restore_arg_regs(); |
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1950 inc_counter_np(SharedRuntime::_jint_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 1951 __ xorptr(rax, rax); // return 0 |
0 | 1952 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1953 __ ret(0); | |
1954 | |
1955 return start; | |
1956 } | |
1957 | |
1958 // Arguments: | |
1959 // aligned - true => Input and output aligned on a HeapWord boundary == 8 bytes | |
1960 // ignored | |
1961 // is_oop - true => oop array, so generate store check code | |
1962 // name - stub name string | |
1963 // | |
1964 // Inputs: | |
1965 // c_rarg0 - source array address | |
1966 // c_rarg1 - destination array address | |
1967 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1968 // | |
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1969 // Side Effects: |
0 | 1970 // disjoint_oop_copy_entry or disjoint_long_copy_entry is set to the |
1971 // no-overlap entry point used by generate_conjoint_long_oop_copy(). | |
1972 // | |
2324 | 1973 address generate_disjoint_long_oop_copy(bool aligned, bool is_oop, address *entry, |
1974 const char *name, bool dest_uninitialized = false) { | |
0 | 1975 __ align(CodeEntryAlignment); |
1976 StubCodeMark mark(this, "StubRoutines", name); | |
1977 address start = __ pc(); | |
1978 | |
1979 Label L_copy_32_bytes, L_copy_8_bytes, L_exit; | |
1980 const Register from = rdi; // source array address | |
1981 const Register to = rsi; // destination array address | |
1982 const Register qword_count = rdx; // elements count | |
1983 const Register end_from = from; // source array end address | |
1984 const Register end_to = rcx; // destination array end address | |
1985 const Register saved_to = to; | |
1986 // End pointers are inclusive, and if count is not zero they point | |
1987 // to the last unit copied: end_to[0] := end_from[0] | |
1988 | |
1989 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1990 // Save no-overlap entry point for generate_conjoint_long_oop_copy() | |
1991 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1992 | |
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1993 if (entry != NULL) { |
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1994 *entry = __ pc(); |
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1995 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1996 BLOCK_COMMENT("Entry:"); |
0 | 1997 } |
1998 | |
1999 setup_arg_regs(); // from => rdi, to => rsi, count => rdx | |
2000 // r9 and r10 may be used to save non-volatile registers | |
2001 // 'from', 'to' and 'qword_count' are now valid | |
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2002 if (is_oop) { |
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2003 // no registers are destroyed by this call |
2324 | 2004 gen_write_ref_array_pre_barrier(to, qword_count, dest_uninitialized); |
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2005 } |
0 | 2006 |
2007 // Copy from low to high addresses. Use 'to' as scratch. | |
304 | 2008 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
2009 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
2010 __ negptr(qword_count); | |
0 | 2011 __ jmp(L_copy_32_bytes); |
2012 | |
2013 // Copy trailing qwords | |
2014 __ BIND(L_copy_8_bytes); | |
2015 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
2016 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
304 | 2017 __ increment(qword_count); |
0 | 2018 __ jcc(Assembler::notZero, L_copy_8_bytes); |
2019 | |
2020 if (is_oop) { | |
2021 __ jmp(L_exit); | |
2022 } else { | |
2023 restore_arg_regs(); | |
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2024 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 2025 __ xorptr(rax, rax); // return 0 |
0 | 2026 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2027 __ ret(0); | |
2028 } | |
2029 | |
2030 // Copy 64-byte chunks | |
2031 copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
2032 | |
2033 if (is_oop) { | |
2034 __ BIND(L_exit); | |
2035 gen_write_ref_array_post_barrier(saved_to, end_to, rax); | |
2036 } | |
2037 restore_arg_regs(); | |
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2038 if (is_oop) { |
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2039 inc_counter_np(SharedRuntime::_oop_array_copy_ctr); // Update counter after rscratch1 is free |
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2040 } else { |
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2041 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); // Update counter after rscratch1 is free |
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2042 } |
304 | 2043 __ xorptr(rax, rax); // return 0 |
0 | 2044 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2045 __ ret(0); | |
2046 | |
2047 return start; | |
2048 } | |
2049 | |
2050 // Arguments: | |
2051 // aligned - true => Input and output aligned on a HeapWord boundary == 8 bytes | |
2052 // ignored | |
2053 // is_oop - true => oop array, so generate store check code | |
2054 // name - stub name string | |
2055 // | |
2056 // Inputs: | |
2057 // c_rarg0 - source array address | |
2058 // c_rarg1 - destination array address | |
2059 // c_rarg2 - element count, treated as ssize_t, can be zero | |
2060 // | |
2324 | 2061 address generate_conjoint_long_oop_copy(bool aligned, bool is_oop, |
2062 address nooverlap_target, address *entry, | |
2063 const char *name, bool dest_uninitialized = false) { | |
0 | 2064 __ align(CodeEntryAlignment); |
2065 StubCodeMark mark(this, "StubRoutines", name); | |
2066 address start = __ pc(); | |
2067 | |
2068 Label L_copy_32_bytes, L_copy_8_bytes, L_exit; | |
2069 const Register from = rdi; // source array address | |
2070 const Register to = rsi; // destination array address | |
2071 const Register qword_count = rdx; // elements count | |
2072 const Register saved_count = rcx; | |
2073 | |
2074 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2075 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
2076 | |
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2077 if (entry != NULL) { |
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2078 *entry = __ pc(); |
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2079 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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2080 BLOCK_COMMENT("Entry:"); |
0 | 2081 } |
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2082 |
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2083 array_overlap_test(nooverlap_target, Address::times_8); |
0 | 2084 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
2085 // r9 and r10 may be used to save non-volatile registers | |
2086 // 'from', 'to' and 'qword_count' are now valid | |
2087 if (is_oop) { | |
2088 // Save to and count for store barrier | |
304 | 2089 __ movptr(saved_count, qword_count); |
0 | 2090 // No registers are destroyed by this call |
2324 | 2091 gen_write_ref_array_pre_barrier(to, saved_count, dest_uninitialized); |
0 | 2092 } |
2093 | |
2094 __ jmp(L_copy_32_bytes); | |
2095 | |
2096 // Copy trailing qwords | |
2097 __ BIND(L_copy_8_bytes); | |
2098 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
2099 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
304 | 2100 __ decrement(qword_count); |
0 | 2101 __ jcc(Assembler::notZero, L_copy_8_bytes); |
2102 | |
2103 if (is_oop) { | |
2104 __ jmp(L_exit); | |
2105 } else { | |
2106 restore_arg_regs(); | |
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2107 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 2108 __ xorptr(rax, rax); // return 0 |
0 | 2109 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2110 __ ret(0); | |
2111 } | |
2112 | |
2113 // Copy in 32-bytes chunks | |
2114 copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); | |
2115 | |
2116 if (is_oop) { | |
2117 __ BIND(L_exit); | |
304 | 2118 __ lea(rcx, Address(to, saved_count, Address::times_8, -8)); |
0 | 2119 gen_write_ref_array_post_barrier(to, rcx, rax); |
2120 } | |
2121 restore_arg_regs(); | |
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2122 if (is_oop) { |
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2123 inc_counter_np(SharedRuntime::_oop_array_copy_ctr); // Update counter after rscratch1 is free |
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2124 } else { |
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2125 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); // Update counter after rscratch1 is free |
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2126 } |
304 | 2127 __ xorptr(rax, rax); // return 0 |
0 | 2128 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2129 __ ret(0); | |
2130 | |
2131 return start; | |
2132 } | |
2133 | |
2134 | |
2135 // Helper for generating a dynamic type check. | |
2136 // Smashes no registers. | |
2137 void generate_type_check(Register sub_klass, | |
2138 Register super_check_offset, | |
2139 Register super_klass, | |
2140 Label& L_success) { | |
2141 assert_different_registers(sub_klass, super_check_offset, super_klass); | |
2142 | |
2143 BLOCK_COMMENT("type_check:"); | |
2144 | |
2145 Label L_miss; | |
2146 | |
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2147 __ check_klass_subtype_fast_path(sub_klass, super_klass, noreg, &L_success, &L_miss, NULL, |
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2148 super_check_offset); |
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2149 __ check_klass_subtype_slow_path(sub_klass, super_klass, noreg, noreg, &L_success, NULL); |
0 | 2150 |
2151 // Fall through on failure! | |
2152 __ BIND(L_miss); | |
2153 } | |
2154 | |
2155 // | |
2156 // Generate checkcasting array copy stub | |
2157 // | |
2158 // Input: | |
2159 // c_rarg0 - source array address | |
2160 // c_rarg1 - destination array address | |
2161 // c_rarg2 - element count, treated as ssize_t, can be zero | |
2162 // c_rarg3 - size_t ckoff (super_check_offset) | |
2163 // not Win64 | |
2164 // c_rarg4 - oop ckval (super_klass) | |
2165 // Win64 | |
2166 // rsp+40 - oop ckval (super_klass) | |
2167 // | |
2168 // Output: | |
2169 // rax == 0 - success | |
2170 // rax == -1^K - failure, where K is partial transfer count | |
2171 // | |
2324 | 2172 address generate_checkcast_copy(const char *name, address *entry, |
2173 bool dest_uninitialized = false) { | |
0 | 2174 |
2175 Label L_load_element, L_store_element, L_do_card_marks, L_done; | |
2176 | |
2177 // Input registers (after setup_arg_regs) | |
2178 const Register from = rdi; // source array address | |
2179 const Register to = rsi; // destination array address | |
2180 const Register length = rdx; // elements count | |
2181 const Register ckoff = rcx; // super_check_offset | |
2182 const Register ckval = r8; // super_klass | |
2183 | |
2184 // Registers used as temps (r13, r14 are save-on-entry) | |
2185 const Register end_from = from; // source array end address | |
2186 const Register end_to = r13; // destination array end address | |
2187 const Register count = rdx; // -(count_remaining) | |
2188 const Register r14_length = r14; // saved copy of length | |
2189 // End pointers are inclusive, and if length is not zero they point | |
2190 // to the last unit copied: end_to[0] := end_from[0] | |
2191 | |
2192 const Register rax_oop = rax; // actual oop copied | |
2193 const Register r11_klass = r11; // oop._klass | |
2194 | |
2195 //--------------------------------------------------------------- | |
2196 // Assembler stub will be used for this call to arraycopy | |
2197 // if the two arrays are subtypes of Object[] but the | |
2198 // destination array type is not equal to or a supertype | |
2199 // of the source type. Each element must be separately | |
2200 // checked. | |
2201 | |
2202 __ align(CodeEntryAlignment); | |
2203 StubCodeMark mark(this, "StubRoutines", name); | |
2204 address start = __ pc(); | |
2205 | |
2206 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2207 | |
2208 #ifdef ASSERT | |
2209 // caller guarantees that the arrays really are different | |
2210 // otherwise, we would have to make conjoint checks | |
2211 { Label L; | |
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2212 array_overlap_test(L, TIMES_OOP); |
0 | 2213 __ stop("checkcast_copy within a single array"); |
2214 __ bind(L); | |
2215 } | |
2216 #endif //ASSERT | |
2217 | |
2218 setup_arg_regs(4); // from => rdi, to => rsi, length => rdx | |
2219 // ckoff => rcx, ckval => r8 | |
2220 // r9 and r10 may be used to save non-volatile registers | |
2221 #ifdef _WIN64 | |
2222 // last argument (#4) is on stack on Win64 | |
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2223 __ movptr(ckval, Address(rsp, 6 * wordSize)); |
0 | 2224 #endif |
2225 | |
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2226 // Caller of this entry point must set up the argument registers. |
2313
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2227 if (entry != NULL) { |
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2228 *entry = __ pc(); |
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2229 BLOCK_COMMENT("Entry:"); |
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2230 } |
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2231 |
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2232 // allocate spill slots for r13, r14 |
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2233 enum { |
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2234 saved_r13_offset, |
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2235 saved_r14_offset, |
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2236 saved_rbp_offset |
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2237 }; |
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2238 __ subptr(rsp, saved_rbp_offset * wordSize); |
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2239 __ movptr(Address(rsp, saved_r13_offset * wordSize), r13); |
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2240 __ movptr(Address(rsp, saved_r14_offset * wordSize), r14); |
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2241 |
0 | 2242 // check that int operands are properly extended to size_t |
2243 assert_clean_int(length, rax); | |
2244 assert_clean_int(ckoff, rax); | |
2245 | |
2246 #ifdef ASSERT | |
2247 BLOCK_COMMENT("assert consistent ckoff/ckval"); | |
2248 // The ckoff and ckval must be mutually consistent, | |
2249 // even though caller generates both. | |
2250 { Label L; | |
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2251 int sco_offset = in_bytes(Klass::super_check_offset_offset()); |
0 | 2252 __ cmpl(ckoff, Address(ckval, sco_offset)); |
2253 __ jcc(Assembler::equal, L); | |
2254 __ stop("super_check_offset inconsistent"); | |
2255 __ bind(L); | |
2256 } | |
2257 #endif //ASSERT | |
2258 | |
2259 // Loop-invariant addresses. They are exclusive end pointers. | |
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2260 Address end_from_addr(from, length, TIMES_OOP, 0); |
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2261 Address end_to_addr(to, length, TIMES_OOP, 0); |
0 | 2262 // Loop-variant addresses. They assume post-incremented count < 0. |
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2263 Address from_element_addr(end_from, count, TIMES_OOP, 0); |
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2264 Address to_element_addr(end_to, count, TIMES_OOP, 0); |
0 | 2265 |
2324 | 2266 gen_write_ref_array_pre_barrier(to, count, dest_uninitialized); |
0 | 2267 |
2268 // Copy from low to high addresses, indexed from the end of each array. | |
304 | 2269 __ lea(end_from, end_from_addr); |
2270 __ lea(end_to, end_to_addr); | |
2271 __ movptr(r14_length, length); // save a copy of the length | |
2272 assert(length == count, ""); // else fix next line: | |
2273 __ negptr(count); // negate and test the length | |
0 | 2274 __ jcc(Assembler::notZero, L_load_element); |
2275 | |
2276 // Empty array: Nothing to do. | |
304 | 2277 __ xorptr(rax, rax); // return 0 on (trivial) success |
0 | 2278 __ jmp(L_done); |
2279 | |
2280 // ======== begin loop ======== | |
2281 // (Loop is rotated; its entry is L_load_element.) | |
2282 // Loop control: | |
2283 // for (count = -count; count != 0; count++) | |
2284 // Base pointers src, dst are biased by 8*(count-1),to last element. | |
1365 | 2285 __ align(OptoLoopAlignment); |
0 | 2286 |
2287 __ BIND(L_store_element); | |
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2288 __ store_heap_oop(to_element_addr, rax_oop); // store the oop |
304 | 2289 __ increment(count); // increment the count toward zero |
0 | 2290 __ jcc(Assembler::zero, L_do_card_marks); |
2291 | |
2292 // ======== loop entry is here ======== | |
2293 __ BIND(L_load_element); | |
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2294 __ load_heap_oop(rax_oop, from_element_addr); // load the oop |
304 | 2295 __ testptr(rax_oop, rax_oop); |
0 | 2296 __ jcc(Assembler::zero, L_store_element); |
2297 | |
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2298 __ load_klass(r11_klass, rax_oop);// query the object klass |
0 | 2299 generate_type_check(r11_klass, ckoff, ckval, L_store_element); |
2300 // ======== end loop ======== | |
2301 | |
2302 // It was a real error; we must depend on the caller to finish the job. | |
2303 // Register rdx = -1 * number of *remaining* oops, r14 = *total* oops. | |
2304 // Emit GC store barriers for the oops we have copied (r14 + rdx), | |
2305 // and report their number to the caller. | |
2306 assert_different_registers(rax, r14_length, count, to, end_to, rcx); | |
304 | 2307 __ lea(end_to, to_element_addr); |
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2308 __ addptr(end_to, -heapOopSize); // make an inclusive end pointer |
362 | 2309 gen_write_ref_array_post_barrier(to, end_to, rscratch1); |
304 | 2310 __ movptr(rax, r14_length); // original oops |
2311 __ addptr(rax, count); // K = (original - remaining) oops | |
2312 __ notptr(rax); // report (-1^K) to caller | |
0 | 2313 __ jmp(L_done); |
2314 | |
2315 // Come here on success only. | |
2316 __ BIND(L_do_card_marks); | |
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|
2317 __ addptr(end_to, -heapOopSize); // make an inclusive end pointer |
362 | 2318 gen_write_ref_array_post_barrier(to, end_to, rscratch1); |
304 | 2319 __ xorptr(rax, rax); // return 0 on success |
0 | 2320 |
2321 // Common exit point (success or failure). | |
2322 __ BIND(L_done); | |
304 | 2323 __ movptr(r13, Address(rsp, saved_r13_offset * wordSize)); |
2324 __ movptr(r14, Address(rsp, saved_r14_offset * wordSize)); | |
0 | 2325 restore_arg_regs(); |
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2326 inc_counter_np(SharedRuntime::_checkcast_array_copy_ctr); // Update counter after rscratch1 is free |
0 | 2327 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2328 __ ret(0); | |
2329 | |
2330 return start; | |
2331 } | |
2332 | |
2333 // | |
2334 // Generate 'unsafe' array copy stub | |
2335 // Though just as safe as the other stubs, it takes an unscaled | |
2336 // size_t argument instead of an element count. | |
2337 // | |
2338 // Input: | |
2339 // c_rarg0 - source array address | |
2340 // c_rarg1 - destination array address | |
2341 // c_rarg2 - byte count, treated as ssize_t, can be zero | |
2342 // | |
2343 // Examines the alignment of the operands and dispatches | |
2344 // to a long, int, short, or byte copy loop. | |
2345 // | |
2313
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diff
changeset
|
2346 address generate_unsafe_copy(const char *name, |
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diff
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|
2347 address byte_copy_entry, address short_copy_entry, |
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|
2348 address int_copy_entry, address long_copy_entry) { |
0 | 2349 |
2350 Label L_long_aligned, L_int_aligned, L_short_aligned; | |
2351 | |
2352 // Input registers (before setup_arg_regs) | |
2353 const Register from = c_rarg0; // source array address | |
2354 const Register to = c_rarg1; // destination array address | |
2355 const Register size = c_rarg2; // byte count (size_t) | |
2356 | |
2357 // Register used as a temp | |
2358 const Register bits = rax; // test copy of low bits | |
2359 | |
2360 __ align(CodeEntryAlignment); | |
2361 StubCodeMark mark(this, "StubRoutines", name); | |
2362 address start = __ pc(); | |
2363 | |
2364 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2365 | |
2366 // bump this on entry, not on exit: | |
2367 inc_counter_np(SharedRuntime::_unsafe_array_copy_ctr); | |
2368 | |
304 | 2369 __ mov(bits, from); |
2370 __ orptr(bits, to); | |
2371 __ orptr(bits, size); | |
0 | 2372 |
2373 __ testb(bits, BytesPerLong-1); | |
2374 __ jccb(Assembler::zero, L_long_aligned); | |
2375 | |
2376 __ testb(bits, BytesPerInt-1); | |
2377 __ jccb(Assembler::zero, L_int_aligned); | |
2378 | |
2379 __ testb(bits, BytesPerShort-1); | |
2380 __ jump_cc(Assembler::notZero, RuntimeAddress(byte_copy_entry)); | |
2381 | |
2382 __ BIND(L_short_aligned); | |
304 | 2383 __ shrptr(size, LogBytesPerShort); // size => short_count |
0 | 2384 __ jump(RuntimeAddress(short_copy_entry)); |
2385 | |
2386 __ BIND(L_int_aligned); | |
304 | 2387 __ shrptr(size, LogBytesPerInt); // size => int_count |
0 | 2388 __ jump(RuntimeAddress(int_copy_entry)); |
2389 | |
2390 __ BIND(L_long_aligned); | |
304 | 2391 __ shrptr(size, LogBytesPerLong); // size => qword_count |
0 | 2392 __ jump(RuntimeAddress(long_copy_entry)); |
2393 | |
2394 return start; | |
2395 } | |
2396 | |
2397 // Perform range checks on the proposed arraycopy. | |
2398 // Kills temp, but nothing else. | |
2399 // Also, clean the sign bits of src_pos and dst_pos. | |
2400 void arraycopy_range_checks(Register src, // source array oop (c_rarg0) | |
2401 Register src_pos, // source position (c_rarg1) | |
2402 Register dst, // destination array oo (c_rarg2) | |
2403 Register dst_pos, // destination position (c_rarg3) | |
2404 Register length, | |
2405 Register temp, | |
2406 Label& L_failed) { | |
2407 BLOCK_COMMENT("arraycopy_range_checks:"); | |
2408 | |
2409 // if (src_pos + length > arrayOop(src)->length()) FAIL; | |
2410 __ movl(temp, length); | |
2411 __ addl(temp, src_pos); // src_pos + length | |
2412 __ cmpl(temp, Address(src, arrayOopDesc::length_offset_in_bytes())); | |
2413 __ jcc(Assembler::above, L_failed); | |
2414 | |
2415 // if (dst_pos + length > arrayOop(dst)->length()) FAIL; | |
2416 __ movl(temp, length); | |
2417 __ addl(temp, dst_pos); // dst_pos + length | |
2418 __ cmpl(temp, Address(dst, arrayOopDesc::length_offset_in_bytes())); | |
2419 __ jcc(Assembler::above, L_failed); | |
2420 | |
2421 // Have to clean up high 32-bits of 'src_pos' and 'dst_pos'. | |
2422 // Move with sign extension can be used since they are positive. | |
2423 __ movslq(src_pos, src_pos); | |
2424 __ movslq(dst_pos, dst_pos); | |
2425 | |
2426 BLOCK_COMMENT("arraycopy_range_checks done"); | |
2427 } | |
2428 | |
2429 // | |
2430 // Generate generic array copy stubs | |
2431 // | |
2432 // Input: | |
2433 // c_rarg0 - src oop | |
2434 // c_rarg1 - src_pos (32-bits) | |
2435 // c_rarg2 - dst oop | |
2436 // c_rarg3 - dst_pos (32-bits) | |
2437 // not Win64 | |
2438 // c_rarg4 - element count (32-bits) | |
2439 // Win64 | |
2440 // rsp+40 - element count (32-bits) | |
2441 // | |
2442 // Output: | |
2443 // rax == 0 - success | |
2444 // rax == -1^K - failure, where K is partial transfer count | |
2445 // | |
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2446 address generate_generic_copy(const char *name, |
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2447 address byte_copy_entry, address short_copy_entry, |
2409
348c0df561a9
7026307: DEBUG MESSAGE: broken null klass on amd64
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2448 address int_copy_entry, address oop_copy_entry, |
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7026307: DEBUG MESSAGE: broken null klass on amd64
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2449 address long_copy_entry, address checkcast_copy_entry) { |
0 | 2450 |
2451 Label L_failed, L_failed_0, L_objArray; | |
2452 Label L_copy_bytes, L_copy_shorts, L_copy_ints, L_copy_longs; | |
2453 | |
2454 // Input registers | |
2455 const Register src = c_rarg0; // source array oop | |
2456 const Register src_pos = c_rarg1; // source position | |
2457 const Register dst = c_rarg2; // destination array oop | |
2458 const Register dst_pos = c_rarg3; // destination position | |
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6998985: faulty generic arraycopy on windows x86_64: 4th arg overwritten with oop
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diff
changeset
|
2459 #ifndef _WIN64 |
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6998985: faulty generic arraycopy on windows x86_64: 4th arg overwritten with oop
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|
2460 const Register length = c_rarg4; |
0 | 2461 #else |
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6998985: faulty generic arraycopy on windows x86_64: 4th arg overwritten with oop
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|
2462 const Address length(rsp, 6 * wordSize); // elements count is on stack on Win64 |
0 | 2463 #endif |
2464 | |
2465 { int modulus = CodeEntryAlignment; | |
2466 int target = modulus - 5; // 5 = sizeof jmp(L_failed) | |
2467 int advance = target - (__ offset() % modulus); | |
2468 if (advance < 0) advance += modulus; | |
2469 if (advance > 0) __ nop(advance); | |
2470 } | |
2471 StubCodeMark mark(this, "StubRoutines", name); | |
2472 | |
2473 // Short-hop target to L_failed. Makes for denser prologue code. | |
2474 __ BIND(L_failed_0); | |
2475 __ jmp(L_failed); | |
2476 assert(__ offset() % CodeEntryAlignment == 0, "no further alignment needed"); | |
2477 | |
2478 __ align(CodeEntryAlignment); | |
2479 address start = __ pc(); | |
2480 | |
2481 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2482 | |
2483 // bump this on entry, not on exit: | |
2484 inc_counter_np(SharedRuntime::_generic_array_copy_ctr); | |
2485 | |
2486 //----------------------------------------------------------------------- | |
2487 // Assembler stub will be used for this call to arraycopy | |
2488 // if the following conditions are met: | |
2489 // | |
2490 // (1) src and dst must not be null. | |
2491 // (2) src_pos must not be negative. | |
2492 // (3) dst_pos must not be negative. | |
2493 // (4) length must not be negative. | |
2494 // (5) src klass and dst klass should be the same and not NULL. | |
2495 // (6) src and dst should be arrays. | |
2496 // (7) src_pos + length must not exceed length of src. | |
2497 // (8) dst_pos + length must not exceed length of dst. | |
2498 // | |
2499 | |
2500 // if (src == NULL) return -1; | |
304 | 2501 __ testptr(src, src); // src oop |
0 | 2502 size_t j1off = __ offset(); |
2503 __ jccb(Assembler::zero, L_failed_0); | |
2504 | |
2505 // if (src_pos < 0) return -1; | |
2506 __ testl(src_pos, src_pos); // src_pos (32-bits) | |
2507 __ jccb(Assembler::negative, L_failed_0); | |
2508 | |
2509 // if (dst == NULL) return -1; | |
304 | 2510 __ testptr(dst, dst); // dst oop |
0 | 2511 __ jccb(Assembler::zero, L_failed_0); |
2512 | |
2513 // if (dst_pos < 0) return -1; | |
2514 __ testl(dst_pos, dst_pos); // dst_pos (32-bits) | |
2515 size_t j4off = __ offset(); | |
2516 __ jccb(Assembler::negative, L_failed_0); | |
2517 | |
2518 // The first four tests are very dense code, | |
2519 // but not quite dense enough to put four | |
2520 // jumps in a 16-byte instruction fetch buffer. | |
2521 // That's good, because some branch predicters | |
2522 // do not like jumps so close together. | |
2523 // Make sure of this. | |
2524 guarantee(((j1off ^ j4off) & ~15) != 0, "I$ line of 1st & 4th jumps"); | |
2525 | |
2526 // registers used as temp | |
2527 const Register r11_length = r11; // elements count to copy | |
2528 const Register r10_src_klass = r10; // array klass | |
2529 | |
2530 // if (length < 0) return -1; | |
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changeset
|
2531 __ movl(r11_length, length); // length (elements count, 32-bits value) |
0 | 2532 __ testl(r11_length, r11_length); |
2533 __ jccb(Assembler::negative, L_failed_0); | |
2534 | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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16
diff
changeset
|
2535 __ load_klass(r10_src_klass, src); |
0 | 2536 #ifdef ASSERT |
2537 // assert(src->klass() != NULL); | |
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2538 { |
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2539 BLOCK_COMMENT("assert klasses not null {"); |
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6998985: faulty generic arraycopy on windows x86_64: 4th arg overwritten with oop
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2540 Label L1, L2; |
304 | 2541 __ testptr(r10_src_klass, r10_src_klass); |
0 | 2542 __ jcc(Assembler::notZero, L2); // it is broken if klass is NULL |
2543 __ bind(L1); | |
2544 __ stop("broken null klass"); | |
2545 __ bind(L2); | |
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2546 __ load_klass(rax, dst); |
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2547 __ cmpq(rax, 0); |
0 | 2548 __ jcc(Assembler::equal, L1); // this would be broken also |
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2549 BLOCK_COMMENT("} assert klasses not null done"); |
0 | 2550 } |
2551 #endif | |
2552 | |
2553 // Load layout helper (32-bits) | |
2554 // | |
2555 // |array_tag| | header_size | element_type | |log2_element_size| | |
2556 // 32 30 24 16 8 2 0 | |
2557 // | |
2558 // array_tag: typeArray = 0x3, objArray = 0x2, non-array = 0x0 | |
2559 // | |
2560 | |
4762
069ab3f976d3
7118863: Move sizeof(klassOopDesc) into the *Klass::*_offset_in_bytes() functions
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4118
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changeset
|
2561 const int lh_offset = in_bytes(Klass::layout_helper_offset()); |
0 | 2562 |
2563 // Handle objArrays completely differently... | |
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2564 const jint objArray_lh = Klass::array_layout_helper(T_OBJECT); |
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2565 __ cmpl(Address(r10_src_klass, lh_offset), objArray_lh); |
0 | 2566 __ jcc(Assembler::equal, L_objArray); |
2567 | |
2568 // if (src->klass() != dst->klass()) return -1; | |
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2569 __ load_klass(rax, dst); |
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2570 __ cmpq(r10_src_klass, rax); |
0 | 2571 __ jcc(Assembler::notEqual, L_failed); |
2572 | |
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2573 const Register rax_lh = rax; // layout helper |
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2574 __ movl(rax_lh, Address(r10_src_klass, lh_offset)); |
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|
2575 |
0 | 2576 // if (!src->is_Array()) return -1; |
2577 __ cmpl(rax_lh, Klass::_lh_neutral_value); | |
2578 __ jcc(Assembler::greaterEqual, L_failed); | |
2579 | |
2580 // At this point, it is known to be a typeArray (array_tag 0x3). | |
2581 #ifdef ASSERT | |
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|
2582 { |
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2583 BLOCK_COMMENT("assert primitive array {"); |
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|
2584 Label L; |
0 | 2585 __ cmpl(rax_lh, (Klass::_lh_array_tag_type_value << Klass::_lh_array_tag_shift)); |
2586 __ jcc(Assembler::greaterEqual, L); | |
2587 __ stop("must be a primitive array"); | |
2588 __ bind(L); | |
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|
2589 BLOCK_COMMENT("} assert primitive array done"); |
0 | 2590 } |
2591 #endif | |
2592 | |
2593 arraycopy_range_checks(src, src_pos, dst, dst_pos, r11_length, | |
2594 r10, L_failed); | |
2595 | |
6831
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6725
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|
2596 // TypeArrayKlass |
0 | 2597 // |
2598 // src_addr = (src + array_header_in_bytes()) + (src_pos << log2elemsize); | |
2599 // dst_addr = (dst + array_header_in_bytes()) + (dst_pos << log2elemsize); | |
2600 // | |
2601 | |
2602 const Register r10_offset = r10; // array offset | |
2603 const Register rax_elsize = rax_lh; // element size | |
2604 | |
2605 __ movl(r10_offset, rax_lh); | |
2606 __ shrl(r10_offset, Klass::_lh_header_size_shift); | |
304 | 2607 __ andptr(r10_offset, Klass::_lh_header_size_mask); // array_offset |
2608 __ addptr(src, r10_offset); // src array offset | |
2609 __ addptr(dst, r10_offset); // dst array offset | |
0 | 2610 BLOCK_COMMENT("choose copy loop based on element size"); |
2611 __ andl(rax_lh, Klass::_lh_log2_element_size_mask); // rax_lh -> rax_elsize | |
2612 | |
2613 // next registers should be set before the jump to corresponding stub | |
2614 const Register from = c_rarg0; // source array address | |
2615 const Register to = c_rarg1; // destination array address | |
2616 const Register count = c_rarg2; // elements count | |
2617 | |
2618 // 'from', 'to', 'count' registers should be set in such order | |
2619 // since they are the same as 'src', 'src_pos', 'dst'. | |
2620 | |
2621 __ BIND(L_copy_bytes); | |
2622 __ cmpl(rax_elsize, 0); | |
2623 __ jccb(Assembler::notEqual, L_copy_shorts); | |
304 | 2624 __ lea(from, Address(src, src_pos, Address::times_1, 0));// src_addr |
2625 __ lea(to, Address(dst, dst_pos, Address::times_1, 0));// dst_addr | |
2626 __ movl2ptr(count, r11_length); // length | |
0 | 2627 __ jump(RuntimeAddress(byte_copy_entry)); |
2628 | |
2629 __ BIND(L_copy_shorts); | |
2630 __ cmpl(rax_elsize, LogBytesPerShort); | |
2631 __ jccb(Assembler::notEqual, L_copy_ints); | |
304 | 2632 __ lea(from, Address(src, src_pos, Address::times_2, 0));// src_addr |
2633 __ lea(to, Address(dst, dst_pos, Address::times_2, 0));// dst_addr | |
2634 __ movl2ptr(count, r11_length); // length | |
0 | 2635 __ jump(RuntimeAddress(short_copy_entry)); |
2636 | |
2637 __ BIND(L_copy_ints); | |
2638 __ cmpl(rax_elsize, LogBytesPerInt); | |
2639 __ jccb(Assembler::notEqual, L_copy_longs); | |
304 | 2640 __ lea(from, Address(src, src_pos, Address::times_4, 0));// src_addr |
2641 __ lea(to, Address(dst, dst_pos, Address::times_4, 0));// dst_addr | |
2642 __ movl2ptr(count, r11_length); // length | |
0 | 2643 __ jump(RuntimeAddress(int_copy_entry)); |
2644 | |
2645 __ BIND(L_copy_longs); | |
2646 #ifdef ASSERT | |
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2647 { |
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2648 BLOCK_COMMENT("assert long copy {"); |
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|
2649 Label L; |
0 | 2650 __ cmpl(rax_elsize, LogBytesPerLong); |
2651 __ jcc(Assembler::equal, L); | |
2652 __ stop("must be long copy, but elsize is wrong"); | |
2653 __ bind(L); | |
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|
2654 BLOCK_COMMENT("} assert long copy done"); |
0 | 2655 } |
2656 #endif | |
304 | 2657 __ lea(from, Address(src, src_pos, Address::times_8, 0));// src_addr |
2658 __ lea(to, Address(dst, dst_pos, Address::times_8, 0));// dst_addr | |
2659 __ movl2ptr(count, r11_length); // length | |
0 | 2660 __ jump(RuntimeAddress(long_copy_entry)); |
2661 | |
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6725
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2662 // ObjArrayKlass |
0 | 2663 __ BIND(L_objArray); |
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diff
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|
2664 // live at this point: r10_src_klass, r11_length, src[_pos], dst[_pos] |
0 | 2665 |
2666 Label L_plain_copy, L_checkcast_copy; | |
2667 // test array classes for subtyping | |
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|
2668 __ load_klass(rax, dst); |
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|
2669 __ cmpq(r10_src_klass, rax); // usual case is exact equality |
0 | 2670 __ jcc(Assembler::notEqual, L_checkcast_copy); |
2671 | |
2672 // Identically typed arrays can be copied without element-wise checks. | |
2673 arraycopy_range_checks(src, src_pos, dst, dst_pos, r11_length, | |
2674 r10, L_failed); | |
2675 | |
304 | 2676 __ lea(from, Address(src, src_pos, TIMES_OOP, |
0 | 2677 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // src_addr |
304 | 2678 __ lea(to, Address(dst, dst_pos, TIMES_OOP, |
2679 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // dst_addr | |
2680 __ movl2ptr(count, r11_length); // length | |
0 | 2681 __ BIND(L_plain_copy); |
2682 __ jump(RuntimeAddress(oop_copy_entry)); | |
2683 | |
2684 __ BIND(L_checkcast_copy); | |
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diff
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|
2685 // live at this point: r10_src_klass, r11_length, rax (dst_klass) |
0 | 2686 { |
2687 // Before looking at dst.length, make sure dst is also an objArray. | |
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diff
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|
2688 __ cmpl(Address(rax, lh_offset), objArray_lh); |
0 | 2689 __ jcc(Assembler::notEqual, L_failed); |
2690 | |
2691 // It is safe to examine both src.length and dst.length. | |
2692 arraycopy_range_checks(src, src_pos, dst, dst_pos, r11_length, | |
2693 rax, L_failed); | |
2006
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diff
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|
2694 |
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diff
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|
2695 const Register r11_dst_klass = r11; |
113
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|
2696 __ load_klass(r11_dst_klass, dst); // reload |
0 | 2697 |
2698 // Marshal the base address arguments now, freeing registers. | |
304 | 2699 __ lea(from, Address(src, src_pos, TIMES_OOP, |
0 | 2700 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
304 | 2701 __ lea(to, Address(dst, dst_pos, TIMES_OOP, |
0 | 2702 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
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|
2703 __ movl(count, length); // length (reloaded) |
0 | 2704 Register sco_temp = c_rarg3; // this register is free now |
2705 assert_different_registers(from, to, count, sco_temp, | |
2706 r11_dst_klass, r10_src_klass); | |
2707 assert_clean_int(count, sco_temp); | |
2708 | |
2709 // Generate the type check. | |
4762
069ab3f976d3
7118863: Move sizeof(klassOopDesc) into the *Klass::*_offset_in_bytes() functions
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4118
diff
changeset
|
2710 const int sco_offset = in_bytes(Klass::super_check_offset_offset()); |
0 | 2711 __ movl(sco_temp, Address(r11_dst_klass, sco_offset)); |
2712 assert_clean_int(sco_temp, rax); | |
2713 generate_type_check(r10_src_klass, sco_temp, r11_dst_klass, L_plain_copy); | |
2714 | |
6831
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|
2715 // Fetch destination element klass from the ObjArrayKlass header. |
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|
2716 int ek_offset = in_bytes(ObjArrayKlass::element_klass_offset()); |
304 | 2717 __ movptr(r11_dst_klass, Address(r11_dst_klass, ek_offset)); |
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diff
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|
2718 __ movl( sco_temp, Address(r11_dst_klass, sco_offset)); |
0 | 2719 assert_clean_int(sco_temp, rax); |
2720 | |
2721 // the checkcast_copy loop needs two extra arguments: | |
2722 assert(c_rarg3 == sco_temp, "#3 already in place"); | |
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|
2723 // Set up arguments for checkcast_copy_entry. |
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|
2724 setup_arg_regs(4); |
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|
2725 __ movptr(r8, r11_dst_klass); // dst.klass.element_klass, r8 is c_rarg4 on Linux/Solaris |
0 | 2726 __ jump(RuntimeAddress(checkcast_copy_entry)); |
2727 } | |
2728 | |
2729 __ BIND(L_failed); | |
304 | 2730 __ xorptr(rax, rax); |
2731 __ notptr(rax); // return -1 | |
0 | 2732 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2733 __ ret(0); | |
2734 | |
2735 return start; | |
2736 } | |
2737 | |
2738 void generate_arraycopy_stubs() { | |
2313
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|
2739 address entry; |
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|
2740 address entry_jbyte_arraycopy; |
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|
2741 address entry_jshort_arraycopy; |
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|
2742 address entry_jint_arraycopy; |
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|
2743 address entry_oop_arraycopy; |
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|
2744 address entry_jlong_arraycopy; |
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diff
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|
2745 address entry_checkcast_arraycopy; |
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|
2746 |
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|
2747 StubRoutines::_jbyte_disjoint_arraycopy = generate_disjoint_byte_copy(false, &entry, |
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|
2748 "jbyte_disjoint_arraycopy"); |
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|
2749 StubRoutines::_jbyte_arraycopy = generate_conjoint_byte_copy(false, entry, &entry_jbyte_arraycopy, |
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|
2750 "jbyte_arraycopy"); |
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|
2751 |
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|
2752 StubRoutines::_jshort_disjoint_arraycopy = generate_disjoint_short_copy(false, &entry, |
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|
2753 "jshort_disjoint_arraycopy"); |
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|
2754 StubRoutines::_jshort_arraycopy = generate_conjoint_short_copy(false, entry, &entry_jshort_arraycopy, |
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|
2755 "jshort_arraycopy"); |
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diff
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|
2756 |
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|
2757 StubRoutines::_jint_disjoint_arraycopy = generate_disjoint_int_oop_copy(false, false, &entry, |
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|
2758 "jint_disjoint_arraycopy"); |
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diff
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|
2759 StubRoutines::_jint_arraycopy = generate_conjoint_int_oop_copy(false, false, entry, |
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|
2760 &entry_jint_arraycopy, "jint_arraycopy"); |
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diff
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|
2761 |
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|
2762 StubRoutines::_jlong_disjoint_arraycopy = generate_disjoint_long_oop_copy(false, false, &entry, |
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|
2763 "jlong_disjoint_arraycopy"); |
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diff
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|
2764 StubRoutines::_jlong_arraycopy = generate_conjoint_long_oop_copy(false, false, entry, |
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diff
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|
2765 &entry_jlong_arraycopy, "jlong_arraycopy"); |
0 | 2766 |
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|
2767 |
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|
2768 if (UseCompressedOops) { |
2313
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diff
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|
2769 StubRoutines::_oop_disjoint_arraycopy = generate_disjoint_int_oop_copy(false, true, &entry, |
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diff
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|
2770 "oop_disjoint_arraycopy"); |
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diff
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|
2771 StubRoutines::_oop_arraycopy = generate_conjoint_int_oop_copy(false, true, entry, |
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2006
diff
changeset
|
2772 &entry_oop_arraycopy, "oop_arraycopy"); |
2324 | 2773 StubRoutines::_oop_disjoint_arraycopy_uninit = generate_disjoint_int_oop_copy(false, true, &entry, |
2774 "oop_disjoint_arraycopy_uninit", | |
2775 /*dest_uninitialized*/true); | |
2776 StubRoutines::_oop_arraycopy_uninit = generate_conjoint_int_oop_copy(false, true, entry, | |
2777 NULL, "oop_arraycopy_uninit", | |
2778 /*dest_uninitialized*/true); | |
113
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16
diff
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|
2779 } else { |
2313
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diff
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|
2780 StubRoutines::_oop_disjoint_arraycopy = generate_disjoint_long_oop_copy(false, true, &entry, |
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diff
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|
2781 "oop_disjoint_arraycopy"); |
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2006
diff
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|
2782 StubRoutines::_oop_arraycopy = generate_conjoint_long_oop_copy(false, true, entry, |
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2006
diff
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|
2783 &entry_oop_arraycopy, "oop_arraycopy"); |
2324 | 2784 StubRoutines::_oop_disjoint_arraycopy_uninit = generate_disjoint_long_oop_copy(false, true, &entry, |
2785 "oop_disjoint_arraycopy_uninit", | |
2786 /*dest_uninitialized*/true); | |
2787 StubRoutines::_oop_arraycopy_uninit = generate_conjoint_long_oop_copy(false, true, entry, | |
2788 NULL, "oop_arraycopy_uninit", | |
2789 /*dest_uninitialized*/true); | |
113
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16
diff
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|
2790 } |
0 | 2791 |
2324 | 2792 StubRoutines::_checkcast_arraycopy = generate_checkcast_copy("checkcast_arraycopy", &entry_checkcast_arraycopy); |
2793 StubRoutines::_checkcast_arraycopy_uninit = generate_checkcast_copy("checkcast_arraycopy_uninit", NULL, | |
2794 /*dest_uninitialized*/true); | |
2795 | |
2313
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7020521: arraycopy stubs place prebarriers incorrectly
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2006
diff
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|
2796 StubRoutines::_unsafe_arraycopy = generate_unsafe_copy("unsafe_arraycopy", |
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7020521: arraycopy stubs place prebarriers incorrectly
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2006
diff
changeset
|
2797 entry_jbyte_arraycopy, |
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2006
diff
changeset
|
2798 entry_jshort_arraycopy, |
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parents:
2006
diff
changeset
|
2799 entry_jint_arraycopy, |
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2006
diff
changeset
|
2800 entry_jlong_arraycopy); |
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2006
diff
changeset
|
2801 StubRoutines::_generic_arraycopy = generate_generic_copy("generic_arraycopy", |
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7020521: arraycopy stubs place prebarriers incorrectly
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2006
diff
changeset
|
2802 entry_jbyte_arraycopy, |
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2006
diff
changeset
|
2803 entry_jshort_arraycopy, |
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2006
diff
changeset
|
2804 entry_jint_arraycopy, |
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diff
changeset
|
2805 entry_oop_arraycopy, |
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diff
changeset
|
2806 entry_jlong_arraycopy, |
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diff
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|
2807 entry_checkcast_arraycopy); |
0 | 2808 |
1763 | 2809 StubRoutines::_jbyte_fill = generate_fill(T_BYTE, false, "jbyte_fill"); |
2810 StubRoutines::_jshort_fill = generate_fill(T_SHORT, false, "jshort_fill"); | |
2811 StubRoutines::_jint_fill = generate_fill(T_INT, false, "jint_fill"); | |
2812 StubRoutines::_arrayof_jbyte_fill = generate_fill(T_BYTE, true, "arrayof_jbyte_fill"); | |
2813 StubRoutines::_arrayof_jshort_fill = generate_fill(T_SHORT, true, "arrayof_jshort_fill"); | |
2814 StubRoutines::_arrayof_jint_fill = generate_fill(T_INT, true, "arrayof_jint_fill"); | |
2815 | |
0 | 2816 // We don't generate specialized code for HeapWord-aligned source |
2817 // arrays, so just use the code we've already generated | |
2818 StubRoutines::_arrayof_jbyte_disjoint_arraycopy = StubRoutines::_jbyte_disjoint_arraycopy; | |
2819 StubRoutines::_arrayof_jbyte_arraycopy = StubRoutines::_jbyte_arraycopy; | |
2820 | |
2821 StubRoutines::_arrayof_jshort_disjoint_arraycopy = StubRoutines::_jshort_disjoint_arraycopy; | |
2822 StubRoutines::_arrayof_jshort_arraycopy = StubRoutines::_jshort_arraycopy; | |
2823 | |
2824 StubRoutines::_arrayof_jint_disjoint_arraycopy = StubRoutines::_jint_disjoint_arraycopy; | |
2825 StubRoutines::_arrayof_jint_arraycopy = StubRoutines::_jint_arraycopy; | |
2826 | |
2827 StubRoutines::_arrayof_jlong_disjoint_arraycopy = StubRoutines::_jlong_disjoint_arraycopy; | |
2828 StubRoutines::_arrayof_jlong_arraycopy = StubRoutines::_jlong_arraycopy; | |
2829 | |
2830 StubRoutines::_arrayof_oop_disjoint_arraycopy = StubRoutines::_oop_disjoint_arraycopy; | |
2831 StubRoutines::_arrayof_oop_arraycopy = StubRoutines::_oop_arraycopy; | |
2324 | 2832 |
2833 StubRoutines::_arrayof_oop_disjoint_arraycopy_uninit = StubRoutines::_oop_disjoint_arraycopy_uninit; | |
2834 StubRoutines::_arrayof_oop_arraycopy_uninit = StubRoutines::_oop_arraycopy_uninit; | |
0 | 2835 } |
2836 | |
1174
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|
2837 void generate_math_stubs() { |
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|
2838 { |
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|
2839 StubCodeMark mark(this, "StubRoutines", "log"); |
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|
2840 StubRoutines::_intrinsic_log = (double (*)(double)) __ pc(); |
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|
2841 |
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|
2842 __ subq(rsp, 8); |
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|
2843 __ movdbl(Address(rsp, 0), xmm0); |
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diff
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|
2844 __ fld_d(Address(rsp, 0)); |
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changeset
|
2845 __ flog(); |
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|
2846 __ fstp_d(Address(rsp, 0)); |
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|
2847 __ movdbl(xmm0, Address(rsp, 0)); |
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diff
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|
2848 __ addq(rsp, 8); |
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|
2849 __ ret(0); |
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|
2850 } |
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|
2851 { |
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|
2852 StubCodeMark mark(this, "StubRoutines", "log10"); |
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parents:
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diff
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|
2853 StubRoutines::_intrinsic_log10 = (double (*)(double)) __ pc(); |
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diff
changeset
|
2854 |
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diff
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|
2855 __ subq(rsp, 8); |
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parents:
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diff
changeset
|
2856 __ movdbl(Address(rsp, 0), xmm0); |
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diff
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|
2857 __ fld_d(Address(rsp, 0)); |
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diff
changeset
|
2858 __ flog10(); |
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diff
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|
2859 __ fstp_d(Address(rsp, 0)); |
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diff
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|
2860 __ movdbl(xmm0, Address(rsp, 0)); |
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diff
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|
2861 __ addq(rsp, 8); |
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|
2862 __ ret(0); |
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|
2863 } |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2864 { |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2865 StubCodeMark mark(this, "StubRoutines", "sin"); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2866 StubRoutines::_intrinsic_sin = (double (*)(double)) __ pc(); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2867 |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2868 __ subq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2869 __ movdbl(Address(rsp, 0), xmm0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2870 __ fld_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2871 __ trigfunc('s'); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2872 __ fstp_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2873 __ movdbl(xmm0, Address(rsp, 0)); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2874 __ addq(rsp, 8); |
ddb7834449d0
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parents:
1108
diff
changeset
|
2875 __ ret(0); |
ddb7834449d0
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parents:
1108
diff
changeset
|
2876 } |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2877 { |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2878 StubCodeMark mark(this, "StubRoutines", "cos"); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2879 StubRoutines::_intrinsic_cos = (double (*)(double)) __ pc(); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2880 |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2881 __ subq(rsp, 8); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2882 __ movdbl(Address(rsp, 0), xmm0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2883 __ fld_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2884 __ trigfunc('c'); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2885 __ fstp_d(Address(rsp, 0)); |
ddb7834449d0
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never
parents:
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diff
changeset
|
2886 __ movdbl(xmm0, Address(rsp, 0)); |
ddb7834449d0
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never
parents:
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diff
changeset
|
2887 __ addq(rsp, 8); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2888 __ ret(0); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2889 } |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2890 { |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2891 StubCodeMark mark(this, "StubRoutines", "tan"); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2892 StubRoutines::_intrinsic_tan = (double (*)(double)) __ pc(); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2893 |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2894 __ subq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2895 __ movdbl(Address(rsp, 0), xmm0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2896 __ fld_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2897 __ trigfunc('t'); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2898 __ fstp_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
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diff
changeset
|
2899 __ movdbl(xmm0, Address(rsp, 0)); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2900 __ addq(rsp, 8); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2901 __ ret(0); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2902 } |
6084
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2903 { |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2904 StubCodeMark mark(this, "StubRoutines", "exp"); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2905 StubRoutines::_intrinsic_exp = (double (*)(double)) __ pc(); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2906 |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2907 __ subq(rsp, 8); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2908 __ movdbl(Address(rsp, 0), xmm0); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2909 __ fld_d(Address(rsp, 0)); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2910 __ exp_with_fallback(0); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2911 __ fstp_d(Address(rsp, 0)); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2912 __ movdbl(xmm0, Address(rsp, 0)); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2913 __ addq(rsp, 8); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2914 __ ret(0); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2915 } |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2916 { |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2917 StubCodeMark mark(this, "StubRoutines", "pow"); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2918 StubRoutines::_intrinsic_pow = (double (*)(double,double)) __ pc(); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2919 |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2920 __ subq(rsp, 8); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2921 __ movdbl(Address(rsp, 0), xmm1); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
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parents:
5903
diff
changeset
|
2922 __ fld_d(Address(rsp, 0)); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2923 __ movdbl(Address(rsp, 0), xmm0); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
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parents:
5903
diff
changeset
|
2924 __ fld_d(Address(rsp, 0)); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2925 __ pow_with_fallback(0); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2926 __ fstp_d(Address(rsp, 0)); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2927 __ movdbl(xmm0, Address(rsp, 0)); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2928 __ addq(rsp, 8); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2929 __ ret(0); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2930 } |
1174
ddb7834449d0
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parents:
1108
diff
changeset
|
2931 } |
ddb7834449d0
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1108
diff
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|
2932 |
6894 | 2933 // AES intrinsic stubs |
2934 enum {AESBlockSize = 16}; | |
2935 | |
2936 address generate_key_shuffle_mask() { | |
2937 __ align(16); | |
2938 StubCodeMark mark(this, "StubRoutines", "key_shuffle_mask"); | |
2939 address start = __ pc(); | |
2940 __ emit_data64( 0x0405060700010203, relocInfo::none ); | |
2941 __ emit_data64( 0x0c0d0e0f08090a0b, relocInfo::none ); | |
2942 return start; | |
2943 } | |
2944 | |
2945 // Utility routine for loading a 128-bit key word in little endian format | |
2946 // can optionally specify that the shuffle mask is already in an xmmregister | |
2947 void load_key(XMMRegister xmmdst, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) { | |
2948 __ movdqu(xmmdst, Address(key, offset)); | |
2949 if (xmm_shuf_mask != NULL) { | |
2950 __ pshufb(xmmdst, xmm_shuf_mask); | |
2951 } else { | |
2952 __ pshufb(xmmdst, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
2953 } | |
2954 } | |
2955 | |
2956 // aesenc using specified key+offset | |
2957 // can optionally specify that the shuffle mask is already in an xmmregister | |
2958 void aes_enc_key(XMMRegister xmmdst, XMMRegister xmmtmp, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) { | |
2959 load_key(xmmtmp, key, offset, xmm_shuf_mask); | |
2960 __ aesenc(xmmdst, xmmtmp); | |
2961 } | |
2962 | |
2963 // aesdec using specified key+offset | |
2964 // can optionally specify that the shuffle mask is already in an xmmregister | |
2965 void aes_dec_key(XMMRegister xmmdst, XMMRegister xmmtmp, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) { | |
2966 load_key(xmmtmp, key, offset, xmm_shuf_mask); | |
2967 __ aesdec(xmmdst, xmmtmp); | |
2968 } | |
2969 | |
2970 | |
2971 // Arguments: | |
2972 // | |
2973 // Inputs: | |
2974 // c_rarg0 - source byte array address | |
2975 // c_rarg1 - destination byte array address | |
2976 // c_rarg2 - K (key) in little endian int array | |
2977 // | |
2978 address generate_aescrypt_encryptBlock() { | |
2979 assert(UseAES && (UseAVX > 0), "need AES instructions and misaligned SSE support"); | |
2980 __ align(CodeEntryAlignment); | |
2981 StubCodeMark mark(this, "StubRoutines", "aescrypt_encryptBlock"); | |
2982 Label L_doLast; | |
2983 address start = __ pc(); | |
2984 | |
2985 const Register from = c_rarg0; // source array address | |
2986 const Register to = c_rarg1; // destination array address | |
2987 const Register key = c_rarg2; // key array address | |
2988 const Register keylen = rax; | |
2989 | |
2990 const XMMRegister xmm_result = xmm0; | |
2991 const XMMRegister xmm_temp = xmm1; | |
2992 const XMMRegister xmm_key_shuf_mask = xmm2; | |
2993 | |
2994 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2995 | |
2996 __ movl(keylen, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); | |
2997 // keylen = # of 32-bit words, convert to 128-bit words | |
2998 __ shrl(keylen, 2); | |
2999 __ subl(keylen, 11); // every key has at least 11 128-bit words, some have more | |
3000 | |
3001 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
3002 __ movdqu(xmm_result, Address(from, 0)); // get 16 bytes of input | |
3003 | |
3004 // For encryption, the java expanded key ordering is just what we need | |
3005 // we don't know if the key is aligned, hence not using load-execute form | |
3006 | |
3007 load_key(xmm_temp, key, 0x00, xmm_key_shuf_mask); | |
3008 __ pxor(xmm_result, xmm_temp); | |
3009 for (int offset = 0x10; offset <= 0x90; offset += 0x10) { | |
3010 aes_enc_key(xmm_result, xmm_temp, key, offset, xmm_key_shuf_mask); | |
3011 } | |
3012 load_key (xmm_temp, key, 0xa0, xmm_key_shuf_mask); | |
3013 __ cmpl(keylen, 0); | |
3014 __ jcc(Assembler::equal, L_doLast); | |
3015 __ aesenc(xmm_result, xmm_temp); // only in 192 and 256 bit keys | |
3016 aes_enc_key(xmm_result, xmm_temp, key, 0xb0, xmm_key_shuf_mask); | |
3017 load_key(xmm_temp, key, 0xc0, xmm_key_shuf_mask); | |
3018 __ subl(keylen, 2); | |
3019 __ jcc(Assembler::equal, L_doLast); | |
3020 __ aesenc(xmm_result, xmm_temp); // only in 256 bit keys | |
3021 aes_enc_key(xmm_result, xmm_temp, key, 0xd0, xmm_key_shuf_mask); | |
3022 load_key(xmm_temp, key, 0xe0, xmm_key_shuf_mask); | |
3023 | |
3024 __ BIND(L_doLast); | |
3025 __ aesenclast(xmm_result, xmm_temp); | |
3026 __ movdqu(Address(to, 0), xmm_result); // store the result | |
3027 __ xorptr(rax, rax); // return 0 | |
3028 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
3029 __ ret(0); | |
3030 | |
3031 return start; | |
3032 } | |
3033 | |
3034 | |
3035 // Arguments: | |
3036 // | |
3037 // Inputs: | |
3038 // c_rarg0 - source byte array address | |
3039 // c_rarg1 - destination byte array address | |
3040 // c_rarg2 - K (key) in little endian int array | |
3041 // | |
3042 address generate_aescrypt_decryptBlock() { | |
3043 assert(UseAES && (UseAVX > 0), "need AES instructions and misaligned SSE support"); | |
3044 __ align(CodeEntryAlignment); | |
3045 StubCodeMark mark(this, "StubRoutines", "aescrypt_decryptBlock"); | |
3046 Label L_doLast; | |
3047 address start = __ pc(); | |
3048 | |
3049 const Register from = c_rarg0; // source array address | |
3050 const Register to = c_rarg1; // destination array address | |
3051 const Register key = c_rarg2; // key array address | |
3052 const Register keylen = rax; | |
3053 | |
3054 const XMMRegister xmm_result = xmm0; | |
3055 const XMMRegister xmm_temp = xmm1; | |
3056 const XMMRegister xmm_key_shuf_mask = xmm2; | |
3057 | |
3058 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
3059 | |
3060 __ movl(keylen, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); | |
3061 // keylen = # of 32-bit words, convert to 128-bit words | |
3062 __ shrl(keylen, 2); | |
3063 __ subl(keylen, 11); // every key has at least 11 128-bit words, some have more | |
3064 | |
3065 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
3066 __ movdqu(xmm_result, Address(from, 0)); | |
3067 | |
3068 // for decryption java expanded key ordering is rotated one position from what we want | |
3069 // so we start from 0x10 here and hit 0x00 last | |
3070 // we don't know if the key is aligned, hence not using load-execute form | |
3071 load_key(xmm_temp, key, 0x10, xmm_key_shuf_mask); | |
3072 __ pxor (xmm_result, xmm_temp); | |
3073 for (int offset = 0x20; offset <= 0xa0; offset += 0x10) { | |
3074 aes_dec_key(xmm_result, xmm_temp, key, offset, xmm_key_shuf_mask); | |
3075 } | |
3076 __ cmpl(keylen, 0); | |
3077 __ jcc(Assembler::equal, L_doLast); | |
3078 // only in 192 and 256 bit keys | |
3079 aes_dec_key(xmm_result, xmm_temp, key, 0xb0, xmm_key_shuf_mask); | |
3080 aes_dec_key(xmm_result, xmm_temp, key, 0xc0, xmm_key_shuf_mask); | |
3081 __ subl(keylen, 2); | |
3082 __ jcc(Assembler::equal, L_doLast); | |
3083 // only in 256 bit keys | |
3084 aes_dec_key(xmm_result, xmm_temp, key, 0xd0, xmm_key_shuf_mask); | |
3085 aes_dec_key(xmm_result, xmm_temp, key, 0xe0, xmm_key_shuf_mask); | |
3086 | |
3087 __ BIND(L_doLast); | |
3088 // for decryption the aesdeclast operation is always on key+0x00 | |
3089 load_key(xmm_temp, key, 0x00, xmm_key_shuf_mask); | |
3090 __ aesdeclast(xmm_result, xmm_temp); | |
3091 | |
3092 __ movdqu(Address(to, 0), xmm_result); // store the result | |
3093 | |
3094 __ xorptr(rax, rax); // return 0 | |
3095 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
3096 __ ret(0); | |
3097 | |
3098 return start; | |
3099 } | |
3100 | |
3101 | |
3102 // Arguments: | |
3103 // | |
3104 // Inputs: | |
3105 // c_rarg0 - source byte array address | |
3106 // c_rarg1 - destination byte array address | |
3107 // c_rarg2 - K (key) in little endian int array | |
3108 // c_rarg3 - r vector byte array address | |
3109 // c_rarg4 - input length | |
3110 // | |
3111 address generate_cipherBlockChaining_encryptAESCrypt() { | |
3112 assert(UseAES && (UseAVX > 0), "need AES instructions and misaligned SSE support"); | |
3113 __ align(CodeEntryAlignment); | |
3114 StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_encryptAESCrypt"); | |
3115 address start = __ pc(); | |
3116 | |
3117 Label L_exit, L_key_192_256, L_key_256, L_loopTop_128, L_loopTop_192, L_loopTop_256; | |
3118 const Register from = c_rarg0; // source array address | |
3119 const Register to = c_rarg1; // destination array address | |
3120 const Register key = c_rarg2; // key array address | |
3121 const Register rvec = c_rarg3; // r byte array initialized from initvector array address | |
3122 // and left with the results of the last encryption block | |
3123 #ifndef _WIN64 | |
3124 const Register len_reg = c_rarg4; // src len (must be multiple of blocksize 16) | |
3125 #else | |
3126 const Address len_mem(rsp, 6 * wordSize); // length is on stack on Win64 | |
3127 const Register len_reg = r10; // pick the first volatile windows register | |
3128 #endif | |
3129 const Register pos = rax; | |
3130 | |
3131 // xmm register assignments for the loops below | |
3132 const XMMRegister xmm_result = xmm0; | |
3133 const XMMRegister xmm_temp = xmm1; | |
3134 // keys 0-10 preloaded into xmm2-xmm12 | |
3135 const int XMM_REG_NUM_KEY_FIRST = 2; | |
3136 const int XMM_REG_NUM_KEY_LAST = 12; | |
3137 const XMMRegister xmm_key0 = as_XMMRegister(XMM_REG_NUM_KEY_FIRST); | |
3138 const XMMRegister xmm_key10 = as_XMMRegister(XMM_REG_NUM_KEY_LAST); | |
3139 | |
3140 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
3141 | |
3142 #ifdef _WIN64 | |
3143 // on win64, fill len_reg from stack position | |
3144 __ movl(len_reg, len_mem); | |
3145 // save the xmm registers which must be preserved 6-12 | |
3146 __ subptr(rsp, -rsp_after_call_off * wordSize); | |
3147 for (int i = 6; i <= XMM_REG_NUM_KEY_LAST; i++) { | |
3148 __ movdqu(xmm_save(i), as_XMMRegister(i)); | |
3149 } | |
3150 #endif | |
3151 | |
3152 const XMMRegister xmm_key_shuf_mask = xmm_temp; // used temporarily to swap key bytes up front | |
3153 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
3154 // load up xmm regs 2 thru 12 with key 0x00 - 0xa0 | |
3155 for (int rnum = XMM_REG_NUM_KEY_FIRST, offset = 0x00; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
3156 load_key(as_XMMRegister(rnum), key, offset, xmm_key_shuf_mask); | |
3157 offset += 0x10; | |
3158 } | |
3159 | |
3160 __ movdqu(xmm_result, Address(rvec, 0x00)); // initialize xmm_result with r vec | |
3161 | |
3162 // now split to different paths depending on the keylen (len in ints of AESCrypt.KLE array (52=192, or 60=256)) | |
3163 __ movl(rax, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); | |
3164 __ cmpl(rax, 44); | |
3165 __ jcc(Assembler::notEqual, L_key_192_256); | |
3166 | |
3167 // 128 bit code follows here | |
3168 __ movptr(pos, 0); | |
3169 __ align(OptoLoopAlignment); | |
3170 __ BIND(L_loopTop_128); | |
3171 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input | |
3172 __ pxor (xmm_result, xmm_temp); // xor with the current r vector | |
3173 | |
3174 __ pxor (xmm_result, xmm_key0); // do the aes rounds | |
3175 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST - 1; rnum++) { | |
3176 __ aesenc(xmm_result, as_XMMRegister(rnum)); | |
3177 } | |
3178 __ aesenclast(xmm_result, xmm_key10); | |
3179 | |
3180 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
3181 // no need to store r to memory until we exit | |
3182 __ addptr(pos, AESBlockSize); | |
3183 __ subptr(len_reg, AESBlockSize); | |
3184 __ jcc(Assembler::notEqual, L_loopTop_128); | |
3185 | |
3186 __ BIND(L_exit); | |
3187 __ movdqu(Address(rvec, 0), xmm_result); // final value of r stored in rvec of CipherBlockChaining object | |
3188 | |
3189 #ifdef _WIN64 | |
3190 // restore xmm regs belonging to calling function | |
3191 for (int i = 6; i <= XMM_REG_NUM_KEY_LAST; i++) { | |
3192 __ movdqu(as_XMMRegister(i), xmm_save(i)); | |
3193 } | |
3194 #endif | |
3195 __ movl(rax, 0); // return 0 (why?) | |
3196 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
3197 __ ret(0); | |
3198 | |
3199 __ BIND(L_key_192_256); | |
3200 // here rax = len in ints of AESCrypt.KLE array (52=192, or 60=256) | |
3201 __ cmpl(rax, 52); | |
3202 __ jcc(Assembler::notEqual, L_key_256); | |
3203 | |
3204 // 192-bit code follows here (could be changed to use more xmm registers) | |
3205 __ movptr(pos, 0); | |
3206 __ align(OptoLoopAlignment); | |
3207 __ BIND(L_loopTop_192); | |
3208 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input | |
3209 __ pxor (xmm_result, xmm_temp); // xor with the current r vector | |
3210 | |
3211 __ pxor (xmm_result, xmm_key0); // do the aes rounds | |
3212 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
3213 __ aesenc(xmm_result, as_XMMRegister(rnum)); | |
3214 } | |
3215 aes_enc_key(xmm_result, xmm_temp, key, 0xb0); | |
3216 load_key(xmm_temp, key, 0xc0); | |
3217 __ aesenclast(xmm_result, xmm_temp); | |
3218 | |
3219 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
3220 // no need to store r to memory until we exit | |
3221 __ addptr(pos, AESBlockSize); | |
3222 __ subptr(len_reg, AESBlockSize); | |
3223 __ jcc(Assembler::notEqual, L_loopTop_192); | |
3224 __ jmp(L_exit); | |
3225 | |
3226 __ BIND(L_key_256); | |
3227 // 256-bit code follows here (could be changed to use more xmm registers) | |
3228 __ movptr(pos, 0); | |
3229 __ align(OptoLoopAlignment); | |
3230 __ BIND(L_loopTop_256); | |
3231 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input | |
3232 __ pxor (xmm_result, xmm_temp); // xor with the current r vector | |
3233 | |
3234 __ pxor (xmm_result, xmm_key0); // do the aes rounds | |
3235 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
3236 __ aesenc(xmm_result, as_XMMRegister(rnum)); | |
3237 } | |
3238 aes_enc_key(xmm_result, xmm_temp, key, 0xb0); | |
3239 aes_enc_key(xmm_result, xmm_temp, key, 0xc0); | |
3240 aes_enc_key(xmm_result, xmm_temp, key, 0xd0); | |
3241 load_key(xmm_temp, key, 0xe0); | |
3242 __ aesenclast(xmm_result, xmm_temp); | |
3243 | |
3244 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
3245 // no need to store r to memory until we exit | |
3246 __ addptr(pos, AESBlockSize); | |
3247 __ subptr(len_reg, AESBlockSize); | |
3248 __ jcc(Assembler::notEqual, L_loopTop_256); | |
3249 __ jmp(L_exit); | |
3250 | |
3251 return start; | |
3252 } | |
3253 | |
3254 | |
3255 | |
3256 // This is a version of CBC/AES Decrypt which does 4 blocks in a loop at a time | |
3257 // to hide instruction latency | |
3258 // | |
3259 // Arguments: | |
3260 // | |
3261 // Inputs: | |
3262 // c_rarg0 - source byte array address | |
3263 // c_rarg1 - destination byte array address | |
3264 // c_rarg2 - K (key) in little endian int array | |
3265 // c_rarg3 - r vector byte array address | |
3266 // c_rarg4 - input length | |
3267 // | |
3268 | |
3269 address generate_cipherBlockChaining_decryptAESCrypt_Parallel() { | |
3270 assert(UseAES && (UseAVX > 0), "need AES instructions and misaligned SSE support"); | |
3271 __ align(CodeEntryAlignment); | |
3272 StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_decryptAESCrypt"); | |
3273 address start = __ pc(); | |
3274 | |
3275 Label L_exit, L_key_192_256, L_key_256; | |
3276 Label L_singleBlock_loopTop_128, L_multiBlock_loopTop_128; | |
3277 Label L_singleBlock_loopTop_192, L_singleBlock_loopTop_256; | |
3278 const Register from = c_rarg0; // source array address | |
3279 const Register to = c_rarg1; // destination array address | |
3280 const Register key = c_rarg2; // key array address | |
3281 const Register rvec = c_rarg3; // r byte array initialized from initvector array address | |
3282 // and left with the results of the last encryption block | |
3283 #ifndef _WIN64 | |
3284 const Register len_reg = c_rarg4; // src len (must be multiple of blocksize 16) | |
3285 #else | |
3286 const Address len_mem(rsp, 6 * wordSize); // length is on stack on Win64 | |
3287 const Register len_reg = r10; // pick the first volatile windows register | |
3288 #endif | |
3289 const Register pos = rax; | |
3290 | |
3291 // xmm register assignments for the loops below | |
3292 const XMMRegister xmm_result = xmm0; | |
3293 // keys 0-10 preloaded into xmm2-xmm12 | |
3294 const int XMM_REG_NUM_KEY_FIRST = 5; | |
3295 const int XMM_REG_NUM_KEY_LAST = 15; | |
3296 const XMMRegister xmm_key_first = as_XMMRegister(XMM_REG_NUM_KEY_FIRST); | |
3297 const XMMRegister xmm_key_last = as_XMMRegister(XMM_REG_NUM_KEY_LAST); | |
3298 | |
3299 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
3300 | |
3301 #ifdef _WIN64 | |
3302 // on win64, fill len_reg from stack position | |
3303 __ movl(len_reg, len_mem); | |
3304 // save the xmm registers which must be preserved 6-15 | |
3305 __ subptr(rsp, -rsp_after_call_off * wordSize); | |
3306 for (int i = 6; i <= XMM_REG_NUM_KEY_LAST; i++) { | |
3307 __ movdqu(xmm_save(i), as_XMMRegister(i)); | |
3308 } | |
3309 #endif | |
3310 // the java expanded key ordering is rotated one position from what we want | |
3311 // so we start from 0x10 here and hit 0x00 last | |
3312 const XMMRegister xmm_key_shuf_mask = xmm1; // used temporarily to swap key bytes up front | |
3313 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
3314 // load up xmm regs 5 thru 15 with key 0x10 - 0xa0 - 0x00 | |
3315 for (int rnum = XMM_REG_NUM_KEY_FIRST, offset = 0x10; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
3316 if (rnum == XMM_REG_NUM_KEY_LAST) offset = 0x00; | |
3317 load_key(as_XMMRegister(rnum), key, offset, xmm_key_shuf_mask); | |
3318 offset += 0x10; | |
3319 } | |
3320 | |
3321 const XMMRegister xmm_prev_block_cipher = xmm1; // holds cipher of previous block | |
3322 // registers holding the four results in the parallelized loop | |
3323 const XMMRegister xmm_result0 = xmm0; | |
3324 const XMMRegister xmm_result1 = xmm2; | |
3325 const XMMRegister xmm_result2 = xmm3; | |
3326 const XMMRegister xmm_result3 = xmm4; | |
3327 | |
3328 __ movdqu(xmm_prev_block_cipher, Address(rvec, 0x00)); // initialize with initial rvec | |
3329 | |
3330 // now split to different paths depending on the keylen (len in ints of AESCrypt.KLE array (52=192, or 60=256)) | |
3331 __ movl(rax, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); | |
3332 __ cmpl(rax, 44); | |
3333 __ jcc(Assembler::notEqual, L_key_192_256); | |
3334 | |
3335 | |
3336 // 128-bit code follows here, parallelized | |
3337 __ movptr(pos, 0); | |
3338 __ align(OptoLoopAlignment); | |
3339 __ BIND(L_multiBlock_loopTop_128); | |
3340 __ cmpptr(len_reg, 4*AESBlockSize); // see if at least 4 blocks left | |
3341 __ jcc(Assembler::less, L_singleBlock_loopTop_128); | |
3342 | |
3343 __ movdqu(xmm_result0, Address(from, pos, Address::times_1, 0*AESBlockSize)); // get next 4 blocks into xmmresult registers | |
3344 __ movdqu(xmm_result1, Address(from, pos, Address::times_1, 1*AESBlockSize)); | |
3345 __ movdqu(xmm_result2, Address(from, pos, Address::times_1, 2*AESBlockSize)); | |
3346 __ movdqu(xmm_result3, Address(from, pos, Address::times_1, 3*AESBlockSize)); | |
3347 | |
3348 #define DoFour(opc, src_reg) \ | |
3349 __ opc(xmm_result0, src_reg); \ | |
3350 __ opc(xmm_result1, src_reg); \ | |
3351 __ opc(xmm_result2, src_reg); \ | |
3352 __ opc(xmm_result3, src_reg); | |
3353 | |
3354 DoFour(pxor, xmm_key_first); | |
3355 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST - 1; rnum++) { | |
3356 DoFour(aesdec, as_XMMRegister(rnum)); | |
3357 } | |
3358 DoFour(aesdeclast, xmm_key_last); | |
3359 // for each result, xor with the r vector of previous cipher block | |
3360 __ pxor(xmm_result0, xmm_prev_block_cipher); | |
3361 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 0*AESBlockSize)); | |
3362 __ pxor(xmm_result1, xmm_prev_block_cipher); | |
3363 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 1*AESBlockSize)); | |
3364 __ pxor(xmm_result2, xmm_prev_block_cipher); | |
3365 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 2*AESBlockSize)); | |
3366 __ pxor(xmm_result3, xmm_prev_block_cipher); | |
3367 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 3*AESBlockSize)); // this will carry over to next set of blocks | |
3368 | |
3369 __ movdqu(Address(to, pos, Address::times_1, 0*AESBlockSize), xmm_result0); // store 4 results into the next 64 bytes of output | |
3370 __ movdqu(Address(to, pos, Address::times_1, 1*AESBlockSize), xmm_result1); | |
3371 __ movdqu(Address(to, pos, Address::times_1, 2*AESBlockSize), xmm_result2); | |
3372 __ movdqu(Address(to, pos, Address::times_1, 3*AESBlockSize), xmm_result3); | |
3373 | |
3374 __ addptr(pos, 4*AESBlockSize); | |
3375 __ subptr(len_reg, 4*AESBlockSize); | |
3376 __ jmp(L_multiBlock_loopTop_128); | |
3377 | |
3378 // registers used in the non-parallelized loops | |
3379 const XMMRegister xmm_prev_block_cipher_save = xmm2; | |
3380 const XMMRegister xmm_temp = xmm3; | |
3381 | |
3382 __ align(OptoLoopAlignment); | |
3383 __ BIND(L_singleBlock_loopTop_128); | |
3384 __ cmpptr(len_reg, 0); // any blocks left?? | |
3385 __ jcc(Assembler::equal, L_exit); | |
3386 __ movdqu(xmm_result, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of cipher input | |
3387 __ movdqa(xmm_prev_block_cipher_save, xmm_result); // save for next r vector | |
3388 __ pxor (xmm_result, xmm_key_first); // do the aes dec rounds | |
3389 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST - 1; rnum++) { | |
3390 __ aesdec(xmm_result, as_XMMRegister(rnum)); | |
3391 } | |
3392 __ aesdeclast(xmm_result, xmm_key_last); | |
3393 __ pxor (xmm_result, xmm_prev_block_cipher); // xor with the current r vector | |
3394 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
3395 // no need to store r to memory until we exit | |
3396 __ movdqa(xmm_prev_block_cipher, xmm_prev_block_cipher_save); // set up next r vector with cipher input from this block | |
3397 | |
3398 __ addptr(pos, AESBlockSize); | |
3399 __ subptr(len_reg, AESBlockSize); | |
3400 __ jmp(L_singleBlock_loopTop_128); | |
3401 | |
3402 | |
3403 __ BIND(L_exit); | |
3404 __ movdqu(Address(rvec, 0), xmm_prev_block_cipher); // final value of r stored in rvec of CipherBlockChaining object | |
3405 #ifdef _WIN64 | |
3406 // restore regs belonging to calling function | |
3407 for (int i = 6; i <= XMM_REG_NUM_KEY_LAST; i++) { | |
3408 __ movdqu(as_XMMRegister(i), xmm_save(i)); | |
3409 } | |
3410 #endif | |
3411 __ movl(rax, 0); // return 0 (why?) | |
3412 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
3413 __ ret(0); | |
3414 | |
3415 | |
3416 __ BIND(L_key_192_256); | |
3417 // here rax = len in ints of AESCrypt.KLE array (52=192, or 60=256) | |
3418 __ cmpl(rax, 52); | |
3419 __ jcc(Assembler::notEqual, L_key_256); | |
3420 | |
3421 // 192-bit code follows here (could be optimized to use parallelism) | |
3422 __ movptr(pos, 0); | |
3423 __ align(OptoLoopAlignment); | |
3424 __ BIND(L_singleBlock_loopTop_192); | |
3425 __ movdqu(xmm_result, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of cipher input | |
3426 __ movdqa(xmm_prev_block_cipher_save, xmm_result); // save for next r vector | |
3427 __ pxor (xmm_result, xmm_key_first); // do the aes dec rounds | |
3428 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST - 1; rnum++) { | |
3429 __ aesdec(xmm_result, as_XMMRegister(rnum)); | |
3430 } | |
3431 aes_dec_key(xmm_result, xmm_temp, key, 0xb0); // 192-bit key goes up to c0 | |
3432 aes_dec_key(xmm_result, xmm_temp, key, 0xc0); | |
3433 __ aesdeclast(xmm_result, xmm_key_last); // xmm15 always came from key+0 | |
3434 __ pxor (xmm_result, xmm_prev_block_cipher); // xor with the current r vector | |
3435 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
3436 // no need to store r to memory until we exit | |
3437 __ movdqa(xmm_prev_block_cipher, xmm_prev_block_cipher_save); // set up next r vector with cipher input from this block | |
3438 | |
3439 __ addptr(pos, AESBlockSize); | |
3440 __ subptr(len_reg, AESBlockSize); | |
3441 __ jcc(Assembler::notEqual,L_singleBlock_loopTop_192); | |
3442 __ jmp(L_exit); | |
3443 | |
3444 __ BIND(L_key_256); | |
3445 // 256-bit code follows here (could be optimized to use parallelism) | |
3446 __ movptr(pos, 0); | |
3447 __ align(OptoLoopAlignment); | |
3448 __ BIND(L_singleBlock_loopTop_256); | |
3449 __ movdqu(xmm_result, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of cipher input | |
3450 __ movdqa(xmm_prev_block_cipher_save, xmm_result); // save for next r vector | |
3451 __ pxor (xmm_result, xmm_key_first); // do the aes dec rounds | |
3452 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST - 1; rnum++) { | |
3453 __ aesdec(xmm_result, as_XMMRegister(rnum)); | |
3454 } | |
3455 aes_dec_key(xmm_result, xmm_temp, key, 0xb0); // 256-bit key goes up to e0 | |
3456 aes_dec_key(xmm_result, xmm_temp, key, 0xc0); | |
3457 aes_dec_key(xmm_result, xmm_temp, key, 0xd0); | |
3458 aes_dec_key(xmm_result, xmm_temp, key, 0xe0); | |
3459 __ aesdeclast(xmm_result, xmm_key_last); // xmm15 came from key+0 | |
3460 __ pxor (xmm_result, xmm_prev_block_cipher); // xor with the current r vector | |
3461 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
3462 // no need to store r to memory until we exit | |
3463 __ movdqa(xmm_prev_block_cipher, xmm_prev_block_cipher_save); // set up next r vector with cipher input from this block | |
3464 | |
3465 __ addptr(pos, AESBlockSize); | |
3466 __ subptr(len_reg, AESBlockSize); | |
3467 __ jcc(Assembler::notEqual,L_singleBlock_loopTop_256); | |
3468 __ jmp(L_exit); | |
3469 | |
3470 return start; | |
3471 } | |
3472 | |
3473 | |
3474 | |
0 | 3475 #undef __ |
3476 #define __ masm-> | |
3477 | |
3478 // Continuation point for throwing of implicit exceptions that are | |
3479 // not handled in the current activation. Fabricates an exception | |
3480 // oop and initiates normal exception dispatching in this | |
3481 // frame. Since we need to preserve callee-saved values (currently | |
3482 // only for C2, but done for C1 as well) we need a callee-saved oop | |
3483 // map and therefore have to make these stubs into RuntimeStubs | |
3484 // rather than BufferBlobs. If the compiler needs all registers to | |
3485 // be preserved between the fault point and the exception handler | |
3486 // then it must assume responsibility for that in | |
3487 // AbstractCompiler::continuation_for_implicit_null_exception or | |
3488 // continuation_for_implicit_division_by_zero_exception. All other | |
3489 // implicit exceptions (e.g., NullPointerException or | |
3490 // AbstractMethodError on entry) are either at call sites or | |
3491 // otherwise assume that stack unwinding will be initiated, so | |
3492 // caller saved registers were assumed volatile in the compiler. | |
3493 address generate_throw_exception(const char* name, | |
3494 address runtime_entry, | |
3451
38fa55e5e792
7055355: JSR 292: crash while throwing WrongMethodTypeException
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2409
diff
changeset
|
3495 Register arg1 = noreg, |
38fa55e5e792
7055355: JSR 292: crash while throwing WrongMethodTypeException
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|
3496 Register arg2 = noreg) { |
0 | 3497 // Information about frame layout at time of blocking runtime call. |
3498 // Note that we only have to preserve callee-saved registers since | |
3499 // the compilers are responsible for supplying a continuation point | |
3500 // if they expect all registers to be preserved. | |
3501 enum layout { | |
3502 rbp_off = frame::arg_reg_save_area_bytes/BytesPerInt, | |
3503 rbp_off2, | |
3504 return_off, | |
3505 return_off2, | |
3506 framesize // inclusive of return address | |
3507 }; | |
3508 | |
3509 int insts_size = 512; | |
3510 int locs_size = 64; | |
3511 | |
3512 CodeBuffer code(name, insts_size, locs_size); | |
3513 OopMapSet* oop_maps = new OopMapSet(); | |
3514 MacroAssembler* masm = new MacroAssembler(&code); | |
3515 | |
3516 address start = __ pc(); | |
3517 | |
3518 // This is an inlined and slightly modified version of call_VM | |
3519 // which has the ability to fetch the return PC out of | |
3520 // thread-local storage and also sets up last_Java_sp slightly | |
3521 // differently than the real call_VM | |
3522 | |
3523 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
3524 | |
3525 assert(is_even(framesize/2), "sp not 16-byte aligned"); | |
3526 | |
3527 // return address and rbp are already in place | |
304 | 3528 __ subptr(rsp, (framesize-4) << LogBytesPerInt); // prolog |
0 | 3529 |
3530 int frame_complete = __ pc() - start; | |
3531 | |
3532 // Set up last_Java_sp and last_Java_fp | |
4895
c742b0b47fe5
7119286: JSR292: SIGSEGV in JNIHandleBlock::release_block(JNIHandleBlock*, Thread*)+0x3c
roland
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4771
diff
changeset
|
3533 address the_pc = __ pc(); |
c742b0b47fe5
7119286: JSR292: SIGSEGV in JNIHandleBlock::release_block(JNIHandleBlock*, Thread*)+0x3c
roland
parents:
4771
diff
changeset
|
3534 __ set_last_Java_frame(rsp, rbp, the_pc); |
c742b0b47fe5
7119286: JSR292: SIGSEGV in JNIHandleBlock::release_block(JNIHandleBlock*, Thread*)+0x3c
roland
parents:
4771
diff
changeset
|
3535 __ andptr(rsp, -(StackAlignmentInBytes)); // Align stack |
0 | 3536 |
3537 // Call runtime | |
3451
38fa55e5e792
7055355: JSR 292: crash while throwing WrongMethodTypeException
never
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2409
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|
3538 if (arg1 != noreg) { |
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3539 assert(arg2 != c_rarg1, "clobbered"); |
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3540 __ movptr(c_rarg1, arg1); |
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3541 } |
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3542 if (arg2 != noreg) { |
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3543 __ movptr(c_rarg2, arg2); |
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3544 } |
304 | 3545 __ movptr(c_rarg0, r15_thread); |
0 | 3546 BLOCK_COMMENT("call runtime_entry"); |
3547 __ call(RuntimeAddress(runtime_entry)); | |
3548 | |
3549 // Generate oop map | |
3550 OopMap* map = new OopMap(framesize, 0); | |
3551 | |
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3552 oop_maps->add_gc_map(the_pc - start, map); |
0 | 3553 |
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3554 __ reset_last_Java_frame(true, true); |
0 | 3555 |
3556 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
3557 | |
3558 // check for pending exceptions | |
3559 #ifdef ASSERT | |
3560 Label L; | |
304 | 3561 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), |
3562 (int32_t) NULL_WORD); | |
0 | 3563 __ jcc(Assembler::notEqual, L); |
3564 __ should_not_reach_here(); | |
3565 __ bind(L); | |
3566 #endif // ASSERT | |
3567 __ jump(RuntimeAddress(StubRoutines::forward_exception_entry())); | |
3568 | |
3569 | |
3570 // codeBlob framesize is in words (not VMRegImpl::slot_size) | |
3571 RuntimeStub* stub = | |
3572 RuntimeStub::new_runtime_stub(name, | |
3573 &code, | |
3574 frame_complete, | |
3575 (framesize >> (LogBytesPerWord - LogBytesPerInt)), | |
3576 oop_maps, false); | |
3577 return stub->entry_point(); | |
3578 } | |
3579 | |
3580 // Initialization | |
3581 void generate_initial() { | |
3582 // Generates all stubs and initializes the entry points | |
3583 | |
3584 // This platform-specific stub is needed by generate_call_stub() | |
304 | 3585 StubRoutines::x86::_mxcsr_std = generate_fp_mask("mxcsr_std", 0x0000000000001F80); |
0 | 3586 |
3587 // entry points that exist in all platforms Note: This is code | |
3588 // that could be shared among different platforms - however the | |
3589 // benefit seems to be smaller than the disadvantage of having a | |
3590 // much more complicated generator structure. See also comment in | |
3591 // stubRoutines.hpp. | |
3592 | |
3593 StubRoutines::_forward_exception_entry = generate_forward_exception(); | |
3594 | |
3595 StubRoutines::_call_stub_entry = | |
3596 generate_call_stub(StubRoutines::_call_stub_return_address); | |
3597 | |
3598 // is referenced by megamorphic call | |
3599 StubRoutines::_catch_exception_entry = generate_catch_exception(); | |
3600 | |
3601 // atomic calls | |
3602 StubRoutines::_atomic_xchg_entry = generate_atomic_xchg(); | |
3603 StubRoutines::_atomic_xchg_ptr_entry = generate_atomic_xchg_ptr(); | |
3604 StubRoutines::_atomic_cmpxchg_entry = generate_atomic_cmpxchg(); | |
3605 StubRoutines::_atomic_cmpxchg_long_entry = generate_atomic_cmpxchg_long(); | |
3606 StubRoutines::_atomic_add_entry = generate_atomic_add(); | |
3607 StubRoutines::_atomic_add_ptr_entry = generate_atomic_add_ptr(); | |
3608 StubRoutines::_fence_entry = generate_orderaccess_fence(); | |
3609 | |
3610 StubRoutines::_handler_for_unsafe_access_entry = | |
3611 generate_handler_for_unsafe_access(); | |
3612 | |
3613 // platform dependent | |
304 | 3614 StubRoutines::x86::_get_previous_fp_entry = generate_get_previous_fp(); |
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3615 StubRoutines::x86::_get_previous_sp_entry = generate_get_previous_sp(); |
304 | 3616 |
3617 StubRoutines::x86::_verify_mxcsr_entry = generate_verify_mxcsr(); | |
3451
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3618 |
4743 | 3619 // Build this early so it's available for the interpreter. |
3620 StubRoutines::_throw_StackOverflowError_entry = | |
3621 generate_throw_exception("StackOverflowError throw_exception", | |
3622 CAST_FROM_FN_PTR(address, | |
3623 SharedRuntime:: | |
3624 throw_StackOverflowError)); | |
0 | 3625 } |
3626 | |
3627 void generate_all() { | |
3628 // Generates all stubs and initializes the entry points | |
3629 | |
3630 // These entry points require SharedInfo::stack0 to be set up in | |
3631 // non-core builds and need to be relocatable, so they each | |
3632 // fabricate a RuntimeStub internally. | |
3633 StubRoutines::_throw_AbstractMethodError_entry = | |
3634 generate_throw_exception("AbstractMethodError throw_exception", | |
3635 CAST_FROM_FN_PTR(address, | |
3636 SharedRuntime:: | |
3937 | 3637 throw_AbstractMethodError)); |
0 | 3638 |
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3639 StubRoutines::_throw_IncompatibleClassChangeError_entry = |
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3640 generate_throw_exception("IncompatibleClassChangeError throw_exception", |
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3641 CAST_FROM_FN_PTR(address, |
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3642 SharedRuntime:: |
3937 | 3643 throw_IncompatibleClassChangeError)); |
0 | 3644 |
3645 StubRoutines::_throw_NullPointerException_at_call_entry = | |
3646 generate_throw_exception("NullPointerException at call throw_exception", | |
3647 CAST_FROM_FN_PTR(address, | |
3648 SharedRuntime:: | |
3937 | 3649 throw_NullPointerException_at_call)); |
0 | 3650 |
3651 // entry points that are platform specific | |
304 | 3652 StubRoutines::x86::_f2i_fixup = generate_f2i_fixup(); |
3653 StubRoutines::x86::_f2l_fixup = generate_f2l_fixup(); | |
3654 StubRoutines::x86::_d2i_fixup = generate_d2i_fixup(); | |
3655 StubRoutines::x86::_d2l_fixup = generate_d2l_fixup(); | |
3656 | |
3657 StubRoutines::x86::_float_sign_mask = generate_fp_mask("float_sign_mask", 0x7FFFFFFF7FFFFFFF); | |
3658 StubRoutines::x86::_float_sign_flip = generate_fp_mask("float_sign_flip", 0x8000000080000000); | |
3659 StubRoutines::x86::_double_sign_mask = generate_fp_mask("double_sign_mask", 0x7FFFFFFFFFFFFFFF); | |
3660 StubRoutines::x86::_double_sign_flip = generate_fp_mask("double_sign_flip", 0x8000000000000000); | |
0 | 3661 |
3662 // support for verify_oop (must happen after universe_init) | |
3663 StubRoutines::_verify_oop_subroutine_entry = generate_verify_oop(); | |
3664 | |
3665 // arraycopy stubs used by compilers | |
3666 generate_arraycopy_stubs(); | |
1108 | 3667 |
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3668 generate_math_stubs(); |
6894 | 3669 |
3670 // don't bother generating these AES intrinsic stubs unless global flag is set | |
3671 if (UseAESIntrinsics) { | |
3672 StubRoutines::x86::_key_shuffle_mask_addr = generate_key_shuffle_mask(); // needed by the others | |
3673 | |
3674 StubRoutines::_aescrypt_encryptBlock = generate_aescrypt_encryptBlock(); | |
3675 StubRoutines::_aescrypt_decryptBlock = generate_aescrypt_decryptBlock(); | |
3676 StubRoutines::_cipherBlockChaining_encryptAESCrypt = generate_cipherBlockChaining_encryptAESCrypt(); | |
3677 StubRoutines::_cipherBlockChaining_decryptAESCrypt = generate_cipherBlockChaining_decryptAESCrypt_Parallel(); | |
3678 } | |
0 | 3679 } |
3680 | |
3681 public: | |
3682 StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) { | |
3683 if (all) { | |
3684 generate_all(); | |
3685 } else { | |
3686 generate_initial(); | |
3687 } | |
3688 } | |
3689 }; // end class declaration | |
3690 | |
3691 void StubGenerator_generate(CodeBuffer* code, bool all) { | |
3692 StubGenerator g(code, all); | |
3693 } |