Mercurial > hg > truffle
annotate src/cpu/x86/vm/stubGenerator_x86_64.cpp @ 15734:bc37e2efc0c2
[inlining-2] fixing input as instance final rather than passing it over and over
author | Miguel Garcia <miguel.m.garcia@oracle.com> |
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date | Sun, 18 May 2014 14:05:36 +0200 |
parents | 4062efea018b |
children | 52b4284cb496 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
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26 #include "asm/macroAssembler.hpp" |
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27 #include "asm/macroAssembler.inline.hpp" |
1972 | 28 #include "interpreter/interpreter.hpp" |
29 #include "nativeInst_x86.hpp" | |
30 #include "oops/instanceOop.hpp" | |
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31 #include "oops/method.hpp" |
1972 | 32 #include "oops/objArrayKlass.hpp" |
33 #include "oops/oop.inline.hpp" | |
34 #include "prims/methodHandles.hpp" | |
35 #include "runtime/frame.inline.hpp" | |
36 #include "runtime/handles.inline.hpp" | |
37 #include "runtime/sharedRuntime.hpp" | |
38 #include "runtime/stubCodeGenerator.hpp" | |
39 #include "runtime/stubRoutines.hpp" | |
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40 #include "runtime/thread.inline.hpp" |
1972 | 41 #include "utilities/top.hpp" |
42 #ifdef COMPILER2 | |
43 #include "opto/runtime.hpp" | |
44 #endif | |
0 | 45 |
46 // Declaration and definition of StubGenerator (no .hpp file). | |
47 // For a more detailed description of the stub routine structure | |
48 // see the comment in stubRoutines.hpp | |
49 | |
50 #define __ _masm-> | |
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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 | |
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84 #define inc_counter_np(counter) ((void)0) |
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 | |
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282 ExternalAddress mxcsr_std(StubRoutines::addr_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 | |
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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; | |
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732 ExternalAddress mxcsr_std(StubRoutines::addr_mxcsr_std()); |
304 | 733 __ push(rax); |
734 __ subptr(rsp, wordSize); // allocate a temp location | |
0 | 735 __ stmxcsr(mxcsr_save); |
736 __ movl(rax, mxcsr_save); | |
737 __ andl(rax, MXCSR_MASK); // Only check control and mask bits | |
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738 __ cmp32(rax, mxcsr_std); |
0 | 739 __ jcc(Assembler::equal, ok_ret); |
740 | |
741 __ warn("MXCSR changed by native JNI code, use -XX:+RestoreMXCSROnJNICall"); | |
742 | |
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743 __ ldmxcsr(mxcsr_std); |
0 | 744 |
745 __ bind(ok_ret); | |
304 | 746 __ addptr(rsp, wordSize); |
747 __ pop(rax); | |
0 | 748 } |
749 | |
750 __ ret(0); | |
751 | |
752 return start; | |
753 } | |
754 | |
755 address generate_f2i_fixup() { | |
756 StubCodeMark mark(this, "StubRoutines", "f2i_fixup"); | |
757 Address inout(rsp, 5 * wordSize); // return address + 4 saves | |
758 | |
759 address start = __ pc(); | |
760 | |
761 Label L; | |
762 | |
304 | 763 __ push(rax); |
764 __ push(c_rarg3); | |
765 __ push(c_rarg2); | |
766 __ push(c_rarg1); | |
0 | 767 |
768 __ movl(rax, 0x7f800000); | |
769 __ xorl(c_rarg3, c_rarg3); | |
770 __ movl(c_rarg2, inout); | |
771 __ movl(c_rarg1, c_rarg2); | |
772 __ andl(c_rarg1, 0x7fffffff); | |
773 __ cmpl(rax, c_rarg1); // NaN? -> 0 | |
774 __ jcc(Assembler::negative, L); | |
775 __ testl(c_rarg2, c_rarg2); // signed ? min_jint : max_jint | |
776 __ movl(c_rarg3, 0x80000000); | |
777 __ movl(rax, 0x7fffffff); | |
778 __ cmovl(Assembler::positive, c_rarg3, rax); | |
779 | |
780 __ bind(L); | |
304 | 781 __ movptr(inout, c_rarg3); |
782 | |
783 __ pop(c_rarg1); | |
784 __ pop(c_rarg2); | |
785 __ pop(c_rarg3); | |
786 __ pop(rax); | |
0 | 787 |
788 __ ret(0); | |
789 | |
790 return start; | |
791 } | |
792 | |
793 address generate_f2l_fixup() { | |
794 StubCodeMark mark(this, "StubRoutines", "f2l_fixup"); | |
795 Address inout(rsp, 5 * wordSize); // return address + 4 saves | |
796 address start = __ pc(); | |
797 | |
798 Label L; | |
799 | |
304 | 800 __ push(rax); |
801 __ push(c_rarg3); | |
802 __ push(c_rarg2); | |
803 __ push(c_rarg1); | |
0 | 804 |
805 __ movl(rax, 0x7f800000); | |
806 __ xorl(c_rarg3, c_rarg3); | |
807 __ movl(c_rarg2, inout); | |
808 __ movl(c_rarg1, c_rarg2); | |
809 __ andl(c_rarg1, 0x7fffffff); | |
810 __ cmpl(rax, c_rarg1); // NaN? -> 0 | |
811 __ jcc(Assembler::negative, L); | |
812 __ testl(c_rarg2, c_rarg2); // signed ? min_jlong : max_jlong | |
813 __ mov64(c_rarg3, 0x8000000000000000); | |
814 __ mov64(rax, 0x7fffffffffffffff); | |
304 | 815 __ cmov(Assembler::positive, c_rarg3, rax); |
0 | 816 |
817 __ bind(L); | |
304 | 818 __ movptr(inout, c_rarg3); |
819 | |
820 __ pop(c_rarg1); | |
821 __ pop(c_rarg2); | |
822 __ pop(c_rarg3); | |
823 __ pop(rax); | |
0 | 824 |
825 __ ret(0); | |
826 | |
827 return start; | |
828 } | |
829 | |
830 address generate_d2i_fixup() { | |
831 StubCodeMark mark(this, "StubRoutines", "d2i_fixup"); | |
832 Address inout(rsp, 6 * wordSize); // return address + 5 saves | |
833 | |
834 address start = __ pc(); | |
835 | |
836 Label L; | |
837 | |
304 | 838 __ push(rax); |
839 __ push(c_rarg3); | |
840 __ push(c_rarg2); | |
841 __ push(c_rarg1); | |
842 __ push(c_rarg0); | |
0 | 843 |
844 __ movl(rax, 0x7ff00000); | |
845 __ movq(c_rarg2, inout); | |
846 __ movl(c_rarg3, c_rarg2); | |
304 | 847 __ mov(c_rarg1, c_rarg2); |
848 __ mov(c_rarg0, c_rarg2); | |
0 | 849 __ negl(c_rarg3); |
304 | 850 __ shrptr(c_rarg1, 0x20); |
0 | 851 __ orl(c_rarg3, c_rarg2); |
852 __ andl(c_rarg1, 0x7fffffff); | |
853 __ xorl(c_rarg2, c_rarg2); | |
854 __ shrl(c_rarg3, 0x1f); | |
855 __ orl(c_rarg1, c_rarg3); | |
856 __ cmpl(rax, c_rarg1); | |
857 __ jcc(Assembler::negative, L); // NaN -> 0 | |
304 | 858 __ testptr(c_rarg0, c_rarg0); // signed ? min_jint : max_jint |
0 | 859 __ movl(c_rarg2, 0x80000000); |
860 __ movl(rax, 0x7fffffff); | |
304 | 861 __ cmov(Assembler::positive, c_rarg2, rax); |
0 | 862 |
863 __ bind(L); | |
304 | 864 __ movptr(inout, c_rarg2); |
865 | |
866 __ pop(c_rarg0); | |
867 __ pop(c_rarg1); | |
868 __ pop(c_rarg2); | |
869 __ pop(c_rarg3); | |
870 __ pop(rax); | |
0 | 871 |
872 __ ret(0); | |
873 | |
874 return start; | |
875 } | |
876 | |
877 address generate_d2l_fixup() { | |
878 StubCodeMark mark(this, "StubRoutines", "d2l_fixup"); | |
879 Address inout(rsp, 6 * wordSize); // return address + 5 saves | |
880 | |
881 address start = __ pc(); | |
882 | |
883 Label L; | |
884 | |
304 | 885 __ push(rax); |
886 __ push(c_rarg3); | |
887 __ push(c_rarg2); | |
888 __ push(c_rarg1); | |
889 __ push(c_rarg0); | |
0 | 890 |
891 __ movl(rax, 0x7ff00000); | |
892 __ movq(c_rarg2, inout); | |
893 __ movl(c_rarg3, c_rarg2); | |
304 | 894 __ mov(c_rarg1, c_rarg2); |
895 __ mov(c_rarg0, c_rarg2); | |
0 | 896 __ negl(c_rarg3); |
304 | 897 __ shrptr(c_rarg1, 0x20); |
0 | 898 __ orl(c_rarg3, c_rarg2); |
899 __ andl(c_rarg1, 0x7fffffff); | |
900 __ xorl(c_rarg2, c_rarg2); | |
901 __ shrl(c_rarg3, 0x1f); | |
902 __ orl(c_rarg1, c_rarg3); | |
903 __ cmpl(rax, c_rarg1); | |
904 __ jcc(Assembler::negative, L); // NaN -> 0 | |
905 __ testq(c_rarg0, c_rarg0); // signed ? min_jlong : max_jlong | |
906 __ mov64(c_rarg2, 0x8000000000000000); | |
907 __ mov64(rax, 0x7fffffffffffffff); | |
908 __ cmovq(Assembler::positive, c_rarg2, rax); | |
909 | |
910 __ bind(L); | |
911 __ movq(inout, c_rarg2); | |
912 | |
304 | 913 __ pop(c_rarg0); |
914 __ pop(c_rarg1); | |
915 __ pop(c_rarg2); | |
916 __ pop(c_rarg3); | |
917 __ pop(rax); | |
0 | 918 |
919 __ ret(0); | |
920 | |
921 return start; | |
922 } | |
923 | |
924 address generate_fp_mask(const char *stub_name, int64_t mask) { | |
1365 | 925 __ align(CodeEntryAlignment); |
0 | 926 StubCodeMark mark(this, "StubRoutines", stub_name); |
927 address start = __ pc(); | |
928 | |
929 __ emit_data64( mask, relocInfo::none ); | |
930 __ emit_data64( mask, relocInfo::none ); | |
931 | |
932 return start; | |
933 } | |
934 | |
935 // The following routine generates a subroutine to throw an | |
936 // asynchronous UnknownError when an unsafe access gets a fault that | |
937 // could not be reasonably prevented by the programmer. (Example: | |
938 // SIGBUS/OBJERR.) | |
939 address generate_handler_for_unsafe_access() { | |
940 StubCodeMark mark(this, "StubRoutines", "handler_for_unsafe_access"); | |
941 address start = __ pc(); | |
942 | |
304 | 943 __ push(0); // hole for return address-to-be |
944 __ pusha(); // push registers | |
0 | 945 Address next_pc(rsp, RegisterImpl::number_of_registers * BytesPerWord); |
946 | |
3937 | 947 // FIXME: this probably needs alignment logic |
948 | |
304 | 949 __ subptr(rsp, frame::arg_reg_save_area_bytes); |
0 | 950 BLOCK_COMMENT("call handle_unsafe_access"); |
951 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, handle_unsafe_access))); | |
304 | 952 __ addptr(rsp, frame::arg_reg_save_area_bytes); |
953 | |
954 __ movptr(next_pc, rax); // stuff next address | |
955 __ popa(); | |
0 | 956 __ ret(0); // jump to next address |
957 | |
958 return start; | |
959 } | |
960 | |
961 // Non-destructive plausibility checks for oops | |
962 // | |
963 // Arguments: | |
964 // all args on stack! | |
965 // | |
966 // Stack after saving c_rarg3: | |
967 // [tos + 0]: saved c_rarg3 | |
968 // [tos + 1]: saved c_rarg2 | |
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969 // [tos + 2]: saved r12 (several TemplateTable methods use it) |
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970 // [tos + 3]: saved flags |
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971 // [tos + 4]: return address |
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972 // * [tos + 5]: error message (char*) |
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973 // * [tos + 6]: object to verify (oop) |
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974 // * [tos + 7]: saved rax - saved by caller and bashed |
1583 | 975 // * [tos + 8]: saved r10 (rscratch1) - saved by caller |
0 | 976 // * = popped on exit |
977 address generate_verify_oop() { | |
978 StubCodeMark mark(this, "StubRoutines", "verify_oop"); | |
979 address start = __ pc(); | |
980 | |
981 Label exit, error; | |
982 | |
304 | 983 __ pushf(); |
0 | 984 __ incrementl(ExternalAddress((address) StubRoutines::verify_oop_count_addr())); |
985 | |
304 | 986 __ push(r12); |
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987 |
0 | 988 // save c_rarg2 and c_rarg3 |
304 | 989 __ push(c_rarg2); |
990 __ push(c_rarg3); | |
0 | 991 |
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992 enum { |
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993 // After previous pushes. |
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994 oop_to_verify = 6 * wordSize, |
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995 saved_rax = 7 * wordSize, |
1583 | 996 saved_r10 = 8 * wordSize, |
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997 |
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998 // Before the call to MacroAssembler::debug(), see below. |
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999 return_addr = 16 * wordSize, |
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1000 error_msg = 17 * wordSize |
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1001 }; |
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1002 |
0 | 1003 // get object |
304 | 1004 __ movptr(rax, Address(rsp, oop_to_verify)); |
0 | 1005 |
1006 // make sure object is 'reasonable' | |
304 | 1007 __ testptr(rax, rax); |
0 | 1008 __ jcc(Assembler::zero, exit); // if obj is NULL it is OK |
1009 // Check if the oop is in the right area of memory | |
304 | 1010 __ movptr(c_rarg2, rax); |
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1011 __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_mask()); |
304 | 1012 __ andptr(c_rarg2, c_rarg3); |
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1013 __ movptr(c_rarg3, (intptr_t) Universe::verify_oop_bits()); |
304 | 1014 __ cmpptr(c_rarg2, c_rarg3); |
0 | 1015 __ jcc(Assembler::notZero, error); |
1016 | |
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1017 // set r12 to heapbase for load_klass() |
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1018 __ reinit_heapbase(); |
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1019 |
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1020 // make sure klass is 'reasonable', which is not zero. |
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1021 __ load_klass(rax, rax); // get klass |
304 | 1022 __ testptr(rax, rax); |
0 | 1023 __ jcc(Assembler::zero, error); // if klass is NULL it is broken |
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 | |
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1220 // count - elements count |
0 | 1221 // scratch - scratch register |
1222 // | |
1223 // The input registers are overwritten. | |
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1224 // |
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1225 void gen_write_ref_array_post_barrier(Register start, Register count, Register scratch) { |
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1226 assert_different_registers(start, count, scratch); |
0 | 1227 BarrierSet* bs = Universe::heap()->barrier_set(); |
1228 switch (bs->kind()) { | |
1229 case BarrierSet::G1SATBCT: | |
1230 case BarrierSet::G1SATBCTLogging: | |
1231 { | |
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1232 __ pusha(); // push registers (overkill) |
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1233 if (c_rarg0 == count) { // On win64 c_rarg0 == rcx |
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1234 assert_different_registers(c_rarg1, start); |
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1235 __ mov(c_rarg1, count); |
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1236 __ mov(c_rarg0, start); |
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1237 } else { |
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1238 assert_different_registers(c_rarg0, count); |
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1239 __ mov(c_rarg0, start); |
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1240 __ mov(c_rarg1, count); |
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1241 } |
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1242 __ call_VM_leaf(CAST_FROM_FN_PTR(address, BarrierSet::static_write_ref_array_post), 2); |
304 | 1243 __ popa(); |
0 | 1244 } |
1245 break; | |
1246 case BarrierSet::CardTableModRef: | |
1247 case BarrierSet::CardTableExtension: | |
1248 { | |
1249 CardTableModRefBS* ct = (CardTableModRefBS*)bs; | |
1250 assert(sizeof(*ct->byte_map_base) == sizeof(jbyte), "adjust this code"); | |
1251 | |
1252 Label L_loop; | |
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1253 const Register end = count; |
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1254 |
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1255 __ leaq(end, Address(start, count, TIMES_OOP, 0)); // end == start+count*oop_size |
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1256 __ subptr(end, BytesPerHeapOop); // end - 1 to make inclusive |
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1257 __ shrptr(start, CardTableModRefBS::card_shift); |
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1258 __ shrptr(end, CardTableModRefBS::card_shift); |
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1259 __ subptr(end, start); // end --> cards count |
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1260 |
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1261 int64_t disp = (int64_t) ct->byte_map_base; |
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1262 __ mov64(scratch, disp); |
304 | 1263 __ addptr(start, scratch); |
0 | 1264 __ BIND(L_loop); |
1265 __ movb(Address(start, count, Address::times_1), 0); | |
304 | 1266 __ decrement(count); |
0 | 1267 __ jcc(Assembler::greaterEqual, L_loop); |
1268 } | |
342
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1269 break; |
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1270 default: |
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1271 ShouldNotReachHere(); |
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1272 |
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1273 } |
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1274 } |
0 | 1275 |
405 | 1276 |
0 | 1277 // Copy big chunks forward |
1278 // | |
1279 // Inputs: | |
1280 // end_from - source arrays end address | |
1281 // end_to - destination array end address | |
1282 // qword_count - 64-bits element count, negative | |
1283 // to - scratch | |
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1284 // L_copy_bytes - entry label |
0 | 1285 // L_copy_8_bytes - exit label |
1286 // | |
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1287 void copy_bytes_forward(Register end_from, Register end_to, |
0 | 1288 Register qword_count, Register to, |
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1289 Label& L_copy_bytes, Label& L_copy_8_bytes) { |
0 | 1290 DEBUG_ONLY(__ stop("enter at entry label, not here")); |
1291 Label L_loop; | |
1365 | 1292 __ align(OptoLoopAlignment); |
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1293 if (UseUnalignedLoadStores) { |
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1294 Label L_end; |
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1295 // Copy 64-bytes per iteration |
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1296 __ BIND(L_loop); |
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1297 if (UseAVX >= 2) { |
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1298 __ vmovdqu(xmm0, Address(end_from, qword_count, Address::times_8, -56)); |
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1299 __ vmovdqu(Address(end_to, qword_count, Address::times_8, -56), xmm0); |
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1300 __ vmovdqu(xmm1, Address(end_from, qword_count, Address::times_8, -24)); |
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1301 __ vmovdqu(Address(end_to, qword_count, Address::times_8, -24), xmm1); |
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1302 } else { |
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1303 __ movdqu(xmm0, Address(end_from, qword_count, Address::times_8, -56)); |
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1304 __ movdqu(Address(end_to, qword_count, Address::times_8, -56), xmm0); |
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1305 __ movdqu(xmm1, Address(end_from, qword_count, Address::times_8, -40)); |
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1306 __ movdqu(Address(end_to, qword_count, Address::times_8, -40), xmm1); |
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1307 __ movdqu(xmm2, Address(end_from, qword_count, Address::times_8, -24)); |
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1308 __ movdqu(Address(end_to, qword_count, Address::times_8, -24), xmm2); |
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1309 __ movdqu(xmm3, Address(end_from, qword_count, Address::times_8, - 8)); |
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1310 __ movdqu(Address(end_to, qword_count, Address::times_8, - 8), xmm3); |
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1311 } |
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1312 __ BIND(L_copy_bytes); |
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1313 __ addptr(qword_count, 8); |
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1314 __ jcc(Assembler::lessEqual, L_loop); |
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1315 __ subptr(qword_count, 4); // sub(8) and add(4) |
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1316 __ jccb(Assembler::greater, L_end); |
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1317 // Copy trailing 32 bytes |
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1318 if (UseAVX >= 2) { |
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1319 __ vmovdqu(xmm0, Address(end_from, qword_count, Address::times_8, -24)); |
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1320 __ vmovdqu(Address(end_to, qword_count, Address::times_8, -24), xmm0); |
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1321 } else { |
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1322 __ movdqu(xmm0, Address(end_from, qword_count, Address::times_8, -24)); |
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1323 __ movdqu(Address(end_to, qword_count, Address::times_8, -24), xmm0); |
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1324 __ movdqu(xmm1, Address(end_from, qword_count, Address::times_8, - 8)); |
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1325 __ movdqu(Address(end_to, qword_count, Address::times_8, - 8), xmm1); |
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1326 } |
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1327 __ addptr(qword_count, 4); |
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1328 __ BIND(L_end); |
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1329 if (UseAVX >= 2) { |
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1330 // clean upper bits of YMM registers |
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1331 __ vzeroupper(); |
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1332 } |
405 | 1333 } else { |
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1334 // Copy 32-bytes per iteration |
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1335 __ BIND(L_loop); |
405 | 1336 __ movq(to, Address(end_from, qword_count, Address::times_8, -24)); |
1337 __ movq(Address(end_to, qword_count, Address::times_8, -24), to); | |
1338 __ movq(to, Address(end_from, qword_count, Address::times_8, -16)); | |
1339 __ movq(Address(end_to, qword_count, Address::times_8, -16), to); | |
1340 __ movq(to, Address(end_from, qword_count, Address::times_8, - 8)); | |
1341 __ movq(Address(end_to, qword_count, Address::times_8, - 8), to); | |
1342 __ movq(to, Address(end_from, qword_count, Address::times_8, - 0)); | |
1343 __ movq(Address(end_to, qword_count, Address::times_8, - 0), to); | |
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1344 |
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1345 __ BIND(L_copy_bytes); |
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1346 __ addptr(qword_count, 4); |
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1347 __ jcc(Assembler::lessEqual, L_loop); |
405 | 1348 } |
304 | 1349 __ subptr(qword_count, 4); |
0 | 1350 __ jcc(Assembler::less, L_copy_8_bytes); // Copy trailing qwords |
1351 } | |
1352 | |
1353 // Copy big chunks backward | |
1354 // | |
1355 // Inputs: | |
1356 // from - source arrays address | |
1357 // dest - destination array address | |
1358 // qword_count - 64-bits element count | |
1359 // to - scratch | |
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1360 // L_copy_bytes - entry label |
0 | 1361 // L_copy_8_bytes - exit label |
1362 // | |
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1363 void copy_bytes_backward(Register from, Register dest, |
0 | 1364 Register qword_count, Register to, |
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1365 Label& L_copy_bytes, Label& L_copy_8_bytes) { |
0 | 1366 DEBUG_ONLY(__ stop("enter at entry label, not here")); |
1367 Label L_loop; | |
1365 | 1368 __ align(OptoLoopAlignment); |
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1369 if (UseUnalignedLoadStores) { |
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1370 Label L_end; |
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1371 // Copy 64-bytes per iteration |
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1372 __ BIND(L_loop); |
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1373 if (UseAVX >= 2) { |
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1374 __ vmovdqu(xmm0, Address(from, qword_count, Address::times_8, 32)); |
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1375 __ vmovdqu(Address(dest, qword_count, Address::times_8, 32), xmm0); |
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1376 __ vmovdqu(xmm1, Address(from, qword_count, Address::times_8, 0)); |
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1377 __ vmovdqu(Address(dest, qword_count, Address::times_8, 0), xmm1); |
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1378 } else { |
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1379 __ movdqu(xmm0, Address(from, qword_count, Address::times_8, 48)); |
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1380 __ movdqu(Address(dest, qword_count, Address::times_8, 48), xmm0); |
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1381 __ movdqu(xmm1, Address(from, qword_count, Address::times_8, 32)); |
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1382 __ movdqu(Address(dest, qword_count, Address::times_8, 32), xmm1); |
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1383 __ movdqu(xmm2, Address(from, qword_count, Address::times_8, 16)); |
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1384 __ movdqu(Address(dest, qword_count, Address::times_8, 16), xmm2); |
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1385 __ movdqu(xmm3, Address(from, qword_count, Address::times_8, 0)); |
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1386 __ movdqu(Address(dest, qword_count, Address::times_8, 0), xmm3); |
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1387 } |
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1388 __ BIND(L_copy_bytes); |
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1389 __ subptr(qword_count, 8); |
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1390 __ jcc(Assembler::greaterEqual, L_loop); |
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1391 |
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1392 __ addptr(qword_count, 4); // add(8) and sub(4) |
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1393 __ jccb(Assembler::less, L_end); |
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1394 // Copy trailing 32 bytes |
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1395 if (UseAVX >= 2) { |
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1396 __ vmovdqu(xmm0, Address(from, qword_count, Address::times_8, 0)); |
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1397 __ vmovdqu(Address(dest, qword_count, Address::times_8, 0), xmm0); |
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1398 } else { |
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1399 __ movdqu(xmm0, Address(from, qword_count, Address::times_8, 16)); |
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1400 __ movdqu(Address(dest, qword_count, Address::times_8, 16), xmm0); |
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1401 __ movdqu(xmm1, Address(from, qword_count, Address::times_8, 0)); |
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1402 __ movdqu(Address(dest, qword_count, Address::times_8, 0), xmm1); |
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1403 } |
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1404 __ subptr(qword_count, 4); |
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1405 __ BIND(L_end); |
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1406 if (UseAVX >= 2) { |
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1407 // clean upper bits of YMM registers |
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1408 __ vzeroupper(); |
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1409 } |
405 | 1410 } else { |
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1411 // Copy 32-bytes per iteration |
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1412 __ BIND(L_loop); |
405 | 1413 __ movq(to, Address(from, qword_count, Address::times_8, 24)); |
1414 __ movq(Address(dest, qword_count, Address::times_8, 24), to); | |
1415 __ movq(to, Address(from, qword_count, Address::times_8, 16)); | |
1416 __ movq(Address(dest, qword_count, Address::times_8, 16), to); | |
1417 __ movq(to, Address(from, qword_count, Address::times_8, 8)); | |
1418 __ movq(Address(dest, qword_count, Address::times_8, 8), to); | |
1419 __ movq(to, Address(from, qword_count, Address::times_8, 0)); | |
1420 __ movq(Address(dest, qword_count, Address::times_8, 0), to); | |
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1421 |
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1422 __ BIND(L_copy_bytes); |
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1423 __ subptr(qword_count, 4); |
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1424 __ jcc(Assembler::greaterEqual, L_loop); |
405 | 1425 } |
304 | 1426 __ addptr(qword_count, 4); |
0 | 1427 __ jcc(Assembler::greater, L_copy_8_bytes); // Copy trailing qwords |
1428 } | |
1429 | |
1430 | |
1431 // Arguments: | |
1432 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1433 // ignored | |
1434 // name - stub name string | |
1435 // | |
1436 // Inputs: | |
1437 // c_rarg0 - source array address | |
1438 // c_rarg1 - destination array address | |
1439 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1440 // | |
1441 // If 'from' and/or 'to' are aligned on 4-, 2-, or 1-byte boundaries, | |
1442 // we let the hardware handle it. The one to eight bytes within words, | |
1443 // dwords or qwords that span cache line boundaries will still be loaded | |
1444 // and stored atomically. | |
1445 // | |
1446 // Side Effects: | |
1447 // disjoint_byte_copy_entry is set to the no-overlap entry point | |
1448 // used by generate_conjoint_byte_copy(). | |
1449 // | |
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1450 address generate_disjoint_byte_copy(bool aligned, address* entry, const char *name) { |
0 | 1451 __ align(CodeEntryAlignment); |
1452 StubCodeMark mark(this, "StubRoutines", name); | |
1453 address start = __ pc(); | |
1454 | |
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1455 Label L_copy_bytes, L_copy_8_bytes, L_copy_4_bytes, L_copy_2_bytes; |
0 | 1456 Label L_copy_byte, L_exit; |
1457 const Register from = rdi; // source array address | |
1458 const Register to = rsi; // destination array address | |
1459 const Register count = rdx; // elements count | |
1460 const Register byte_count = rcx; | |
1461 const Register qword_count = count; | |
1462 const Register end_from = from; // source array end address | |
1463 const Register end_to = to; // destination array end address | |
1464 // End pointers are inclusive, and if count is not zero they point | |
1465 // to the last unit copied: end_to[0] := end_from[0] | |
1466 | |
1467 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1468 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1469 | |
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1470 if (entry != NULL) { |
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1471 *entry = __ pc(); |
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1472 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1473 BLOCK_COMMENT("Entry:"); |
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1474 } |
0 | 1475 |
1476 setup_arg_regs(); // from => rdi, to => rsi, count => rdx | |
1477 // r9 and r10 may be used to save non-volatile registers | |
1478 | |
1479 // 'from', 'to' and 'count' are now valid | |
304 | 1480 __ movptr(byte_count, count); |
1481 __ shrptr(count, 3); // count => qword_count | |
0 | 1482 |
1483 // Copy from low to high addresses. Use 'to' as scratch. | |
304 | 1484 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
1485 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
1486 __ negptr(qword_count); // make the count negative | |
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1487 __ jmp(L_copy_bytes); |
0 | 1488 |
1489 // Copy trailing qwords | |
1490 __ BIND(L_copy_8_bytes); | |
1491 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
1492 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
304 | 1493 __ increment(qword_count); |
0 | 1494 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1495 | |
1496 // Check for and copy trailing dword | |
1497 __ BIND(L_copy_4_bytes); | |
304 | 1498 __ testl(byte_count, 4); |
0 | 1499 __ jccb(Assembler::zero, L_copy_2_bytes); |
1500 __ movl(rax, Address(end_from, 8)); | |
1501 __ movl(Address(end_to, 8), rax); | |
1502 | |
304 | 1503 __ addptr(end_from, 4); |
1504 __ addptr(end_to, 4); | |
0 | 1505 |
1506 // Check for and copy trailing word | |
1507 __ BIND(L_copy_2_bytes); | |
304 | 1508 __ testl(byte_count, 2); |
0 | 1509 __ jccb(Assembler::zero, L_copy_byte); |
1510 __ movw(rax, Address(end_from, 8)); | |
1511 __ movw(Address(end_to, 8), rax); | |
1512 | |
304 | 1513 __ addptr(end_from, 2); |
1514 __ addptr(end_to, 2); | |
0 | 1515 |
1516 // Check for and copy trailing byte | |
1517 __ BIND(L_copy_byte); | |
304 | 1518 __ testl(byte_count, 1); |
0 | 1519 __ jccb(Assembler::zero, L_exit); |
1520 __ movb(rax, Address(end_from, 8)); | |
1521 __ movb(Address(end_to, 8), rax); | |
1522 | |
1523 __ BIND(L_exit); | |
1524 restore_arg_regs(); | |
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1525 inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 1526 __ xorptr(rax, rax); // return 0 |
0 | 1527 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1528 __ ret(0); | |
1529 | |
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1530 // Copy in multi-bytes chunks |
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1531 copy_bytes_forward(end_from, end_to, qword_count, rax, L_copy_bytes, L_copy_8_bytes); |
0 | 1532 __ jmp(L_copy_4_bytes); |
1533 | |
1534 return start; | |
1535 } | |
1536 | |
1537 // Arguments: | |
1538 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1539 // ignored | |
1540 // name - stub name string | |
1541 // | |
1542 // Inputs: | |
1543 // c_rarg0 - source array address | |
1544 // c_rarg1 - destination array address | |
1545 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1546 // | |
1547 // If 'from' and/or 'to' are aligned on 4-, 2-, or 1-byte boundaries, | |
1548 // we let the hardware handle it. The one to eight bytes within words, | |
1549 // dwords or qwords that span cache line boundaries will still be loaded | |
1550 // and stored atomically. | |
1551 // | |
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1552 address generate_conjoint_byte_copy(bool aligned, address nooverlap_target, |
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1553 address* entry, const char *name) { |
0 | 1554 __ align(CodeEntryAlignment); |
1555 StubCodeMark mark(this, "StubRoutines", name); | |
1556 address start = __ pc(); | |
1557 | |
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1558 Label L_copy_bytes, L_copy_8_bytes, L_copy_4_bytes, L_copy_2_bytes; |
0 | 1559 const Register from = rdi; // source array address |
1560 const Register to = rsi; // destination array address | |
1561 const Register count = rdx; // elements count | |
1562 const Register byte_count = rcx; | |
1563 const Register qword_count = count; | |
1564 | |
1565 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1566 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1567 | |
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1568 if (entry != NULL) { |
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1569 *entry = __ pc(); |
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1570 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1571 BLOCK_COMMENT("Entry:"); |
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1572 } |
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1573 |
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1574 array_overlap_test(nooverlap_target, Address::times_1); |
0 | 1575 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
1576 // r9 and r10 may be used to save non-volatile registers | |
1577 | |
1578 // 'from', 'to' and 'count' are now valid | |
304 | 1579 __ movptr(byte_count, count); |
1580 __ shrptr(count, 3); // count => qword_count | |
0 | 1581 |
1582 // Copy from high to low addresses. | |
1583 | |
1584 // Check for and copy trailing byte | |
304 | 1585 __ testl(byte_count, 1); |
0 | 1586 __ jcc(Assembler::zero, L_copy_2_bytes); |
1587 __ movb(rax, Address(from, byte_count, Address::times_1, -1)); | |
1588 __ movb(Address(to, byte_count, Address::times_1, -1), rax); | |
304 | 1589 __ decrement(byte_count); // Adjust for possible trailing word |
0 | 1590 |
1591 // Check for and copy trailing word | |
1592 __ BIND(L_copy_2_bytes); | |
304 | 1593 __ testl(byte_count, 2); |
0 | 1594 __ jcc(Assembler::zero, L_copy_4_bytes); |
1595 __ movw(rax, Address(from, byte_count, Address::times_1, -2)); | |
1596 __ movw(Address(to, byte_count, Address::times_1, -2), rax); | |
1597 | |
1598 // Check for and copy trailing dword | |
1599 __ BIND(L_copy_4_bytes); | |
304 | 1600 __ testl(byte_count, 4); |
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1601 __ jcc(Assembler::zero, L_copy_bytes); |
0 | 1602 __ movl(rax, Address(from, qword_count, Address::times_8)); |
1603 __ movl(Address(to, qword_count, Address::times_8), rax); | |
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1604 __ jmp(L_copy_bytes); |
0 | 1605 |
1606 // Copy trailing qwords | |
1607 __ BIND(L_copy_8_bytes); | |
1608 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
1609 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
304 | 1610 __ decrement(qword_count); |
0 | 1611 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1612 | |
1613 restore_arg_regs(); | |
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1614 inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 1615 __ xorptr(rax, rax); // return 0 |
0 | 1616 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1617 __ ret(0); | |
1618 | |
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1619 // Copy in multi-bytes chunks |
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1620 copy_bytes_backward(from, to, qword_count, rax, L_copy_bytes, L_copy_8_bytes); |
0 | 1621 |
1622 restore_arg_regs(); | |
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1623 inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 1624 __ xorptr(rax, rax); // return 0 |
0 | 1625 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1626 __ ret(0); | |
1627 | |
1628 return start; | |
1629 } | |
1630 | |
1631 // Arguments: | |
1632 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1633 // ignored | |
1634 // name - stub name string | |
1635 // | |
1636 // Inputs: | |
1637 // c_rarg0 - source array address | |
1638 // c_rarg1 - destination array address | |
1639 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1640 // | |
1641 // If 'from' and/or 'to' are aligned on 4- or 2-byte boundaries, we | |
1642 // let the hardware handle it. The two or four words within dwords | |
1643 // or qwords that span cache line boundaries will still be loaded | |
1644 // and stored atomically. | |
1645 // | |
1646 // Side Effects: | |
1647 // disjoint_short_copy_entry is set to the no-overlap entry point | |
1648 // used by generate_conjoint_short_copy(). | |
1649 // | |
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1650 address generate_disjoint_short_copy(bool aligned, address *entry, const char *name) { |
0 | 1651 __ align(CodeEntryAlignment); |
1652 StubCodeMark mark(this, "StubRoutines", name); | |
1653 address start = __ pc(); | |
1654 | |
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1655 Label L_copy_bytes, L_copy_8_bytes, L_copy_4_bytes,L_copy_2_bytes,L_exit; |
0 | 1656 const Register from = rdi; // source array address |
1657 const Register to = rsi; // destination array address | |
1658 const Register count = rdx; // elements count | |
1659 const Register word_count = rcx; | |
1660 const Register qword_count = count; | |
1661 const Register end_from = from; // source array end address | |
1662 const Register end_to = to; // destination array end address | |
1663 // End pointers are inclusive, and if count is not zero they point | |
1664 // to the last unit copied: end_to[0] := end_from[0] | |
1665 | |
1666 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1667 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1668 | |
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1669 if (entry != NULL) { |
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1670 *entry = __ pc(); |
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1671 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1672 BLOCK_COMMENT("Entry:"); |
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1673 } |
0 | 1674 |
1675 setup_arg_regs(); // from => rdi, to => rsi, count => rdx | |
1676 // r9 and r10 may be used to save non-volatile registers | |
1677 | |
1678 // 'from', 'to' and 'count' are now valid | |
304 | 1679 __ movptr(word_count, count); |
1680 __ shrptr(count, 2); // count => qword_count | |
0 | 1681 |
1682 // Copy from low to high addresses. Use 'to' as scratch. | |
304 | 1683 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
1684 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
1685 __ negptr(qword_count); | |
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1686 __ jmp(L_copy_bytes); |
0 | 1687 |
1688 // Copy trailing qwords | |
1689 __ BIND(L_copy_8_bytes); | |
1690 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
1691 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
304 | 1692 __ increment(qword_count); |
0 | 1693 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1694 | |
1695 // Original 'dest' is trashed, so we can't use it as a | |
1696 // base register for a possible trailing word copy | |
1697 | |
1698 // Check for and copy trailing dword | |
1699 __ BIND(L_copy_4_bytes); | |
304 | 1700 __ testl(word_count, 2); |
0 | 1701 __ jccb(Assembler::zero, L_copy_2_bytes); |
1702 __ movl(rax, Address(end_from, 8)); | |
1703 __ movl(Address(end_to, 8), rax); | |
1704 | |
304 | 1705 __ addptr(end_from, 4); |
1706 __ addptr(end_to, 4); | |
0 | 1707 |
1708 // Check for and copy trailing word | |
1709 __ BIND(L_copy_2_bytes); | |
304 | 1710 __ testl(word_count, 1); |
0 | 1711 __ jccb(Assembler::zero, L_exit); |
1712 __ movw(rax, Address(end_from, 8)); | |
1713 __ movw(Address(end_to, 8), rax); | |
1714 | |
1715 __ BIND(L_exit); | |
1716 restore_arg_regs(); | |
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1717 inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 1718 __ xorptr(rax, rax); // return 0 |
0 | 1719 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1720 __ ret(0); | |
1721 | |
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1722 // Copy in multi-bytes chunks |
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1723 copy_bytes_forward(end_from, end_to, qword_count, rax, L_copy_bytes, L_copy_8_bytes); |
0 | 1724 __ jmp(L_copy_4_bytes); |
1725 | |
1726 return start; | |
1727 } | |
1728 | |
1763 | 1729 address generate_fill(BasicType t, bool aligned, const char *name) { |
1730 __ align(CodeEntryAlignment); | |
1731 StubCodeMark mark(this, "StubRoutines", name); | |
1732 address start = __ pc(); | |
1733 | |
1734 BLOCK_COMMENT("Entry:"); | |
1735 | |
1736 const Register to = c_rarg0; // source array address | |
1737 const Register value = c_rarg1; // value | |
1738 const Register count = c_rarg2; // elements count | |
1739 | |
1740 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1741 | |
1742 __ generate_fill(t, aligned, to, value, count, rax, xmm0); | |
1743 | |
1744 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
1745 __ ret(0); | |
1746 return start; | |
1747 } | |
1748 | |
0 | 1749 // Arguments: |
1750 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1751 // ignored | |
1752 // name - stub name string | |
1753 // | |
1754 // Inputs: | |
1755 // c_rarg0 - source array address | |
1756 // c_rarg1 - destination array address | |
1757 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1758 // | |
1759 // If 'from' and/or 'to' are aligned on 4- or 2-byte boundaries, we | |
1760 // let the hardware handle it. The two or four words within dwords | |
1761 // or qwords that span cache line boundaries will still be loaded | |
1762 // and stored atomically. | |
1763 // | |
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1764 address generate_conjoint_short_copy(bool aligned, address nooverlap_target, |
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1765 address *entry, const char *name) { |
0 | 1766 __ align(CodeEntryAlignment); |
1767 StubCodeMark mark(this, "StubRoutines", name); | |
1768 address start = __ pc(); | |
1769 | |
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1770 Label L_copy_bytes, L_copy_8_bytes, L_copy_4_bytes; |
0 | 1771 const Register from = rdi; // source array address |
1772 const Register to = rsi; // destination array address | |
1773 const Register count = rdx; // elements count | |
1774 const Register word_count = rcx; | |
1775 const Register qword_count = count; | |
1776 | |
1777 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1778 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1779 | |
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1780 if (entry != NULL) { |
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1781 *entry = __ pc(); |
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1782 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1783 BLOCK_COMMENT("Entry:"); |
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1784 } |
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1785 |
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1786 array_overlap_test(nooverlap_target, Address::times_2); |
0 | 1787 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
1788 // r9 and r10 may be used to save non-volatile registers | |
1789 | |
1790 // 'from', 'to' and 'count' are now valid | |
304 | 1791 __ movptr(word_count, count); |
1792 __ shrptr(count, 2); // count => qword_count | |
0 | 1793 |
1794 // Copy from high to low addresses. Use 'to' as scratch. | |
1795 | |
1796 // Check for and copy trailing word | |
304 | 1797 __ testl(word_count, 1); |
0 | 1798 __ jccb(Assembler::zero, L_copy_4_bytes); |
1799 __ movw(rax, Address(from, word_count, Address::times_2, -2)); | |
1800 __ movw(Address(to, word_count, Address::times_2, -2), rax); | |
1801 | |
1802 // Check for and copy trailing dword | |
1803 __ BIND(L_copy_4_bytes); | |
304 | 1804 __ testl(word_count, 2); |
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1805 __ jcc(Assembler::zero, L_copy_bytes); |
0 | 1806 __ movl(rax, Address(from, qword_count, Address::times_8)); |
1807 __ movl(Address(to, qword_count, Address::times_8), rax); | |
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1808 __ jmp(L_copy_bytes); |
0 | 1809 |
1810 // Copy trailing qwords | |
1811 __ BIND(L_copy_8_bytes); | |
1812 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
1813 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
304 | 1814 __ decrement(qword_count); |
0 | 1815 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1816 | |
1817 restore_arg_regs(); | |
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1818 inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 1819 __ xorptr(rax, rax); // return 0 |
0 | 1820 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1821 __ ret(0); | |
1822 | |
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1823 // Copy in multi-bytes chunks |
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1824 copy_bytes_backward(from, to, qword_count, rax, L_copy_bytes, L_copy_8_bytes); |
0 | 1825 |
1826 restore_arg_regs(); | |
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1827 inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 1828 __ xorptr(rax, rax); // return 0 |
0 | 1829 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1830 __ ret(0); | |
1831 | |
1832 return start; | |
1833 } | |
1834 | |
1835 // Arguments: | |
1836 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1837 // ignored | |
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1838 // is_oop - true => oop array, so generate store check code |
0 | 1839 // name - stub name string |
1840 // | |
1841 // Inputs: | |
1842 // c_rarg0 - source array address | |
1843 // c_rarg1 - destination array address | |
1844 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1845 // | |
1846 // If 'from' and/or 'to' are aligned on 4-byte boundaries, we let | |
1847 // the hardware handle it. The two dwords within qwords that span | |
1848 // cache line boundaries will still be loaded and stored atomicly. | |
1849 // | |
1850 // Side Effects: | |
1851 // disjoint_int_copy_entry is set to the no-overlap entry point | |
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1852 // used by generate_conjoint_int_oop_copy(). |
0 | 1853 // |
2324 | 1854 address generate_disjoint_int_oop_copy(bool aligned, bool is_oop, address* entry, |
1855 const char *name, bool dest_uninitialized = false) { | |
0 | 1856 __ align(CodeEntryAlignment); |
1857 StubCodeMark mark(this, "StubRoutines", name); | |
1858 address start = __ pc(); | |
1859 | |
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1860 Label L_copy_bytes, L_copy_8_bytes, L_copy_4_bytes, L_exit; |
0 | 1861 const Register from = rdi; // source array address |
1862 const Register to = rsi; // destination array address | |
1863 const Register count = rdx; // elements count | |
1864 const Register dword_count = rcx; | |
1865 const Register qword_count = count; | |
1866 const Register end_from = from; // source array end address | |
1867 const Register end_to = to; // destination array end address | |
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1868 const Register saved_to = r11; // saved destination array address |
0 | 1869 // End pointers are inclusive, and if count is not zero they point |
1870 // to the last unit copied: end_to[0] := end_from[0] | |
1871 | |
1872 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1873 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1874 | |
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1875 if (entry != NULL) { |
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1876 *entry = __ pc(); |
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1877 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1878 BLOCK_COMMENT("Entry:"); |
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1879 } |
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1880 |
0 | 1881 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
1882 // r9 and r10 may be used to save non-volatile registers | |
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1883 if (is_oop) { |
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1884 __ movq(saved_to, to); |
2324 | 1885 gen_write_ref_array_pre_barrier(to, count, dest_uninitialized); |
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1886 } |
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1887 |
0 | 1888 // 'from', 'to' and 'count' are now valid |
304 | 1889 __ movptr(dword_count, count); |
1890 __ shrptr(count, 1); // count => qword_count | |
0 | 1891 |
1892 // Copy from low to high addresses. Use 'to' as scratch. | |
304 | 1893 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
1894 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
1895 __ negptr(qword_count); | |
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1896 __ jmp(L_copy_bytes); |
0 | 1897 |
1898 // Copy trailing qwords | |
1899 __ BIND(L_copy_8_bytes); | |
1900 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
1901 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
304 | 1902 __ increment(qword_count); |
0 | 1903 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1904 | |
1905 // Check for and copy trailing dword | |
1906 __ BIND(L_copy_4_bytes); | |
304 | 1907 __ testl(dword_count, 1); // Only byte test since the value is 0 or 1 |
0 | 1908 __ jccb(Assembler::zero, L_exit); |
1909 __ movl(rax, Address(end_from, 8)); | |
1910 __ movl(Address(end_to, 8), rax); | |
1911 | |
1912 __ BIND(L_exit); | |
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1913 if (is_oop) { |
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1914 gen_write_ref_array_post_barrier(saved_to, dword_count, rax); |
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1915 } |
0 | 1916 restore_arg_regs(); |
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1917 inc_counter_np(SharedRuntime::_jint_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 1918 __ xorptr(rax, rax); // return 0 |
0 | 1919 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1920 __ ret(0); | |
1921 | |
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1922 // Copy in multi-bytes chunks |
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1923 copy_bytes_forward(end_from, end_to, qword_count, rax, L_copy_bytes, L_copy_8_bytes); |
0 | 1924 __ jmp(L_copy_4_bytes); |
1925 | |
1926 return start; | |
1927 } | |
1928 | |
1929 // Arguments: | |
1930 // aligned - true => Input and output aligned on a HeapWord == 8-byte boundary | |
1931 // ignored | |
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1932 // is_oop - true => oop array, so generate store check code |
0 | 1933 // name - stub name string |
1934 // | |
1935 // Inputs: | |
1936 // c_rarg0 - source array address | |
1937 // c_rarg1 - destination array address | |
1938 // c_rarg2 - element count, treated as ssize_t, can be zero | |
1939 // | |
1940 // If 'from' and/or 'to' are aligned on 4-byte boundaries, we let | |
1941 // the hardware handle it. The two dwords within qwords that span | |
1942 // cache line boundaries will still be loaded and stored atomicly. | |
1943 // | |
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1944 address generate_conjoint_int_oop_copy(bool aligned, bool is_oop, address nooverlap_target, |
2324 | 1945 address *entry, const char *name, |
1946 bool dest_uninitialized = false) { | |
0 | 1947 __ align(CodeEntryAlignment); |
1948 StubCodeMark mark(this, "StubRoutines", name); | |
1949 address start = __ pc(); | |
1950 | |
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1951 Label L_copy_bytes, L_copy_8_bytes, L_copy_2_bytes, L_exit; |
0 | 1952 const Register from = rdi; // source array address |
1953 const Register to = rsi; // destination array address | |
1954 const Register count = rdx; // elements count | |
1955 const Register dword_count = rcx; | |
1956 const Register qword_count = count; | |
1957 | |
1958 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1959 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
1960 | |
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1961 if (entry != NULL) { |
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1962 *entry = __ pc(); |
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1963 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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1964 BLOCK_COMMENT("Entry:"); |
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1965 } |
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1966 |
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1967 array_overlap_test(nooverlap_target, Address::times_4); |
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1968 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
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1969 // r9 and r10 may be used to save non-volatile registers |
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1970 |
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1971 if (is_oop) { |
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1972 // no registers are destroyed by this call |
2324 | 1973 gen_write_ref_array_pre_barrier(to, count, dest_uninitialized); |
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1974 } |
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1975 |
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1976 assert_clean_int(count, rax); // Make sure 'count' is clean int. |
0 | 1977 // 'from', 'to' and 'count' are now valid |
304 | 1978 __ movptr(dword_count, count); |
1979 __ shrptr(count, 1); // count => qword_count | |
0 | 1980 |
1981 // Copy from high to low addresses. Use 'to' as scratch. | |
1982 | |
1983 // Check for and copy trailing dword | |
304 | 1984 __ testl(dword_count, 1); |
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1985 __ jcc(Assembler::zero, L_copy_bytes); |
0 | 1986 __ movl(rax, Address(from, dword_count, Address::times_4, -4)); |
1987 __ movl(Address(to, dword_count, Address::times_4, -4), rax); | |
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1988 __ jmp(L_copy_bytes); |
0 | 1989 |
1990 // Copy trailing qwords | |
1991 __ BIND(L_copy_8_bytes); | |
1992 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
1993 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
304 | 1994 __ decrement(qword_count); |
0 | 1995 __ jcc(Assembler::notZero, L_copy_8_bytes); |
1996 | |
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1997 if (is_oop) { |
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1998 __ jmp(L_exit); |
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1999 } |
0 | 2000 restore_arg_regs(); |
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2001 inc_counter_np(SharedRuntime::_jint_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 2002 __ xorptr(rax, rax); // return 0 |
0 | 2003 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2004 __ ret(0); | |
2005 | |
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2006 // Copy in multi-bytes chunks |
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2007 copy_bytes_backward(from, to, qword_count, rax, L_copy_bytes, L_copy_8_bytes); |
0 | 2008 |
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2009 __ BIND(L_exit); |
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2010 if (is_oop) { |
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2011 gen_write_ref_array_post_barrier(to, dword_count, rax); |
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2012 } |
0 | 2013 restore_arg_regs(); |
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2014 inc_counter_np(SharedRuntime::_jint_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 2015 __ xorptr(rax, rax); // return 0 |
0 | 2016 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2017 __ ret(0); | |
2018 | |
2019 return start; | |
2020 } | |
2021 | |
2022 // Arguments: | |
2023 // aligned - true => Input and output aligned on a HeapWord boundary == 8 bytes | |
2024 // ignored | |
2025 // is_oop - true => oop array, so generate store check code | |
2026 // name - stub name string | |
2027 // | |
2028 // Inputs: | |
2029 // c_rarg0 - source array address | |
2030 // c_rarg1 - destination array address | |
2031 // c_rarg2 - element count, treated as ssize_t, can be zero | |
2032 // | |
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2033 // Side Effects: |
0 | 2034 // disjoint_oop_copy_entry or disjoint_long_copy_entry is set to the |
2035 // no-overlap entry point used by generate_conjoint_long_oop_copy(). | |
2036 // | |
2324 | 2037 address generate_disjoint_long_oop_copy(bool aligned, bool is_oop, address *entry, |
2038 const char *name, bool dest_uninitialized = false) { | |
0 | 2039 __ align(CodeEntryAlignment); |
2040 StubCodeMark mark(this, "StubRoutines", name); | |
2041 address start = __ pc(); | |
2042 | |
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2043 Label L_copy_bytes, L_copy_8_bytes, L_exit; |
0 | 2044 const Register from = rdi; // source array address |
2045 const Register to = rsi; // destination array address | |
2046 const Register qword_count = rdx; // elements count | |
2047 const Register end_from = from; // source array end address | |
2048 const Register end_to = rcx; // destination array end address | |
2049 const Register saved_to = to; | |
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2050 const Register saved_count = r11; |
0 | 2051 // End pointers are inclusive, and if count is not zero they point |
2052 // to the last unit copied: end_to[0] := end_from[0] | |
2053 | |
2054 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2055 // Save no-overlap entry point for generate_conjoint_long_oop_copy() | |
2056 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
2057 | |
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2058 if (entry != NULL) { |
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2059 *entry = __ pc(); |
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2060 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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2061 BLOCK_COMMENT("Entry:"); |
0 | 2062 } |
2063 | |
2064 setup_arg_regs(); // from => rdi, to => rsi, count => rdx | |
2065 // r9 and r10 may be used to save non-volatile registers | |
2066 // 'from', 'to' and 'qword_count' are now valid | |
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2067 if (is_oop) { |
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2068 // Save to and count for store barrier |
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2069 __ movptr(saved_count, qword_count); |
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2070 // no registers are destroyed by this call |
2324 | 2071 gen_write_ref_array_pre_barrier(to, qword_count, dest_uninitialized); |
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2072 } |
0 | 2073 |
2074 // Copy from low to high addresses. Use 'to' as scratch. | |
304 | 2075 __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); |
2076 __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); | |
2077 __ negptr(qword_count); | |
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2078 __ jmp(L_copy_bytes); |
0 | 2079 |
2080 // Copy trailing qwords | |
2081 __ BIND(L_copy_8_bytes); | |
2082 __ movq(rax, Address(end_from, qword_count, Address::times_8, 8)); | |
2083 __ movq(Address(end_to, qword_count, Address::times_8, 8), rax); | |
304 | 2084 __ increment(qword_count); |
0 | 2085 __ jcc(Assembler::notZero, L_copy_8_bytes); |
2086 | |
2087 if (is_oop) { | |
2088 __ jmp(L_exit); | |
2089 } else { | |
2090 restore_arg_regs(); | |
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2091 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 2092 __ xorptr(rax, rax); // return 0 |
0 | 2093 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2094 __ ret(0); | |
2095 } | |
2096 | |
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2097 // Copy in multi-bytes chunks |
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2098 copy_bytes_forward(end_from, end_to, qword_count, rax, L_copy_bytes, L_copy_8_bytes); |
0 | 2099 |
2100 if (is_oop) { | |
2101 __ BIND(L_exit); | |
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2102 gen_write_ref_array_post_barrier(saved_to, saved_count, rax); |
0 | 2103 } |
2104 restore_arg_regs(); | |
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2105 if (is_oop) { |
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2106 inc_counter_np(SharedRuntime::_oop_array_copy_ctr); // Update counter after rscratch1 is free |
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2107 } else { |
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2108 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); // Update counter after rscratch1 is free |
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2109 } |
304 | 2110 __ xorptr(rax, rax); // return 0 |
0 | 2111 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2112 __ ret(0); | |
2113 | |
2114 return start; | |
2115 } | |
2116 | |
2117 // Arguments: | |
2118 // aligned - true => Input and output aligned on a HeapWord boundary == 8 bytes | |
2119 // ignored | |
2120 // is_oop - true => oop array, so generate store check code | |
2121 // name - stub name string | |
2122 // | |
2123 // Inputs: | |
2124 // c_rarg0 - source array address | |
2125 // c_rarg1 - destination array address | |
2126 // c_rarg2 - element count, treated as ssize_t, can be zero | |
2127 // | |
2324 | 2128 address generate_conjoint_long_oop_copy(bool aligned, bool is_oop, |
2129 address nooverlap_target, address *entry, | |
2130 const char *name, bool dest_uninitialized = false) { | |
0 | 2131 __ align(CodeEntryAlignment); |
2132 StubCodeMark mark(this, "StubRoutines", name); | |
2133 address start = __ pc(); | |
2134 | |
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2135 Label L_copy_bytes, L_copy_8_bytes, L_exit; |
0 | 2136 const Register from = rdi; // source array address |
2137 const Register to = rsi; // destination array address | |
2138 const Register qword_count = rdx; // elements count | |
2139 const Register saved_count = rcx; | |
2140 | |
2141 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2142 assert_clean_int(c_rarg2, rax); // Make sure 'count' is clean int. | |
2143 | |
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2144 if (entry != NULL) { |
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2145 *entry = __ pc(); |
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2146 // caller can pass a 64-bit byte count here (from Unsafe.copyMemory) |
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2147 BLOCK_COMMENT("Entry:"); |
0 | 2148 } |
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2149 |
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2150 array_overlap_test(nooverlap_target, Address::times_8); |
0 | 2151 setup_arg_regs(); // from => rdi, to => rsi, count => rdx |
2152 // r9 and r10 may be used to save non-volatile registers | |
2153 // 'from', 'to' and 'qword_count' are now valid | |
2154 if (is_oop) { | |
2155 // Save to and count for store barrier | |
304 | 2156 __ movptr(saved_count, qword_count); |
0 | 2157 // No registers are destroyed by this call |
2324 | 2158 gen_write_ref_array_pre_barrier(to, saved_count, dest_uninitialized); |
0 | 2159 } |
2160 | |
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2161 __ jmp(L_copy_bytes); |
0 | 2162 |
2163 // Copy trailing qwords | |
2164 __ BIND(L_copy_8_bytes); | |
2165 __ movq(rax, Address(from, qword_count, Address::times_8, -8)); | |
2166 __ movq(Address(to, qword_count, Address::times_8, -8), rax); | |
304 | 2167 __ decrement(qword_count); |
0 | 2168 __ jcc(Assembler::notZero, L_copy_8_bytes); |
2169 | |
2170 if (is_oop) { | |
2171 __ jmp(L_exit); | |
2172 } else { | |
2173 restore_arg_regs(); | |
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2174 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); // Update counter after rscratch1 is free |
304 | 2175 __ xorptr(rax, rax); // return 0 |
0 | 2176 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2177 __ ret(0); | |
2178 } | |
2179 | |
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2180 // Copy in multi-bytes chunks |
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2181 copy_bytes_backward(from, to, qword_count, rax, L_copy_bytes, L_copy_8_bytes); |
0 | 2182 |
2183 if (is_oop) { | |
2184 __ BIND(L_exit); | |
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2185 gen_write_ref_array_post_barrier(to, saved_count, rax); |
0 | 2186 } |
2187 restore_arg_regs(); | |
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2188 if (is_oop) { |
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2189 inc_counter_np(SharedRuntime::_oop_array_copy_ctr); // Update counter after rscratch1 is free |
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2190 } else { |
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2191 inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); // Update counter after rscratch1 is free |
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2192 } |
304 | 2193 __ xorptr(rax, rax); // return 0 |
0 | 2194 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2195 __ ret(0); | |
2196 | |
2197 return start; | |
2198 } | |
2199 | |
2200 | |
2201 // Helper for generating a dynamic type check. | |
2202 // Smashes no registers. | |
2203 void generate_type_check(Register sub_klass, | |
2204 Register super_check_offset, | |
2205 Register super_klass, | |
2206 Label& L_success) { | |
2207 assert_different_registers(sub_klass, super_check_offset, super_klass); | |
2208 | |
2209 BLOCK_COMMENT("type_check:"); | |
2210 | |
2211 Label L_miss; | |
2212 | |
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2213 __ check_klass_subtype_fast_path(sub_klass, super_klass, noreg, &L_success, &L_miss, NULL, |
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2214 super_check_offset); |
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2215 __ check_klass_subtype_slow_path(sub_klass, super_klass, noreg, noreg, &L_success, NULL); |
0 | 2216 |
2217 // Fall through on failure! | |
2218 __ BIND(L_miss); | |
2219 } | |
2220 | |
2221 // | |
2222 // Generate checkcasting array copy stub | |
2223 // | |
2224 // Input: | |
2225 // c_rarg0 - source array address | |
2226 // c_rarg1 - destination array address | |
2227 // c_rarg2 - element count, treated as ssize_t, can be zero | |
2228 // c_rarg3 - size_t ckoff (super_check_offset) | |
2229 // not Win64 | |
2230 // c_rarg4 - oop ckval (super_klass) | |
2231 // Win64 | |
2232 // rsp+40 - oop ckval (super_klass) | |
2233 // | |
2234 // Output: | |
2235 // rax == 0 - success | |
2236 // rax == -1^K - failure, where K is partial transfer count | |
2237 // | |
2324 | 2238 address generate_checkcast_copy(const char *name, address *entry, |
2239 bool dest_uninitialized = false) { | |
0 | 2240 |
2241 Label L_load_element, L_store_element, L_do_card_marks, L_done; | |
2242 | |
2243 // Input registers (after setup_arg_regs) | |
2244 const Register from = rdi; // source array address | |
2245 const Register to = rsi; // destination array address | |
2246 const Register length = rdx; // elements count | |
2247 const Register ckoff = rcx; // super_check_offset | |
2248 const Register ckval = r8; // super_klass | |
2249 | |
2250 // Registers used as temps (r13, r14 are save-on-entry) | |
2251 const Register end_from = from; // source array end address | |
2252 const Register end_to = r13; // destination array end address | |
2253 const Register count = rdx; // -(count_remaining) | |
2254 const Register r14_length = r14; // saved copy of length | |
2255 // End pointers are inclusive, and if length is not zero they point | |
2256 // to the last unit copied: end_to[0] := end_from[0] | |
2257 | |
2258 const Register rax_oop = rax; // actual oop copied | |
2259 const Register r11_klass = r11; // oop._klass | |
2260 | |
2261 //--------------------------------------------------------------- | |
2262 // Assembler stub will be used for this call to arraycopy | |
2263 // if the two arrays are subtypes of Object[] but the | |
2264 // destination array type is not equal to or a supertype | |
2265 // of the source type. Each element must be separately | |
2266 // checked. | |
2267 | |
2268 __ align(CodeEntryAlignment); | |
2269 StubCodeMark mark(this, "StubRoutines", name); | |
2270 address start = __ pc(); | |
2271 | |
2272 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2273 | |
2274 #ifdef ASSERT | |
2275 // caller guarantees that the arrays really are different | |
2276 // otherwise, we would have to make conjoint checks | |
2277 { Label L; | |
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2278 array_overlap_test(L, TIMES_OOP); |
0 | 2279 __ stop("checkcast_copy within a single array"); |
2280 __ bind(L); | |
2281 } | |
2282 #endif //ASSERT | |
2283 | |
2284 setup_arg_regs(4); // from => rdi, to => rsi, length => rdx | |
2285 // ckoff => rcx, ckval => r8 | |
2286 // r9 and r10 may be used to save non-volatile registers | |
2287 #ifdef _WIN64 | |
2288 // last argument (#4) is on stack on Win64 | |
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2289 __ movptr(ckval, Address(rsp, 6 * wordSize)); |
0 | 2290 #endif |
2291 | |
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2292 // Caller of this entry point must set up the argument registers. |
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2293 if (entry != NULL) { |
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2294 *entry = __ pc(); |
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2295 BLOCK_COMMENT("Entry:"); |
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2296 } |
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2297 |
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2298 // allocate spill slots for r13, r14 |
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2299 enum { |
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2300 saved_r13_offset, |
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2301 saved_r14_offset, |
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2302 saved_rbp_offset |
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2303 }; |
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2304 __ subptr(rsp, saved_rbp_offset * wordSize); |
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2305 __ movptr(Address(rsp, saved_r13_offset * wordSize), r13); |
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2306 __ movptr(Address(rsp, saved_r14_offset * wordSize), r14); |
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2307 |
0 | 2308 // check that int operands are properly extended to size_t |
2309 assert_clean_int(length, rax); | |
2310 assert_clean_int(ckoff, rax); | |
2311 | |
2312 #ifdef ASSERT | |
2313 BLOCK_COMMENT("assert consistent ckoff/ckval"); | |
2314 // The ckoff and ckval must be mutually consistent, | |
2315 // even though caller generates both. | |
2316 { Label L; | |
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2317 int sco_offset = in_bytes(Klass::super_check_offset_offset()); |
0 | 2318 __ cmpl(ckoff, Address(ckval, sco_offset)); |
2319 __ jcc(Assembler::equal, L); | |
2320 __ stop("super_check_offset inconsistent"); | |
2321 __ bind(L); | |
2322 } | |
2323 #endif //ASSERT | |
2324 | |
2325 // Loop-invariant addresses. They are exclusive end pointers. | |
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2326 Address end_from_addr(from, length, TIMES_OOP, 0); |
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2327 Address end_to_addr(to, length, TIMES_OOP, 0); |
0 | 2328 // Loop-variant addresses. They assume post-incremented count < 0. |
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2329 Address from_element_addr(end_from, count, TIMES_OOP, 0); |
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2330 Address to_element_addr(end_to, count, TIMES_OOP, 0); |
0 | 2331 |
2324 | 2332 gen_write_ref_array_pre_barrier(to, count, dest_uninitialized); |
0 | 2333 |
2334 // Copy from low to high addresses, indexed from the end of each array. | |
304 | 2335 __ lea(end_from, end_from_addr); |
2336 __ lea(end_to, end_to_addr); | |
2337 __ movptr(r14_length, length); // save a copy of the length | |
2338 assert(length == count, ""); // else fix next line: | |
2339 __ negptr(count); // negate and test the length | |
0 | 2340 __ jcc(Assembler::notZero, L_load_element); |
2341 | |
2342 // Empty array: Nothing to do. | |
304 | 2343 __ xorptr(rax, rax); // return 0 on (trivial) success |
0 | 2344 __ jmp(L_done); |
2345 | |
2346 // ======== begin loop ======== | |
2347 // (Loop is rotated; its entry is L_load_element.) | |
2348 // Loop control: | |
2349 // for (count = -count; count != 0; count++) | |
2350 // Base pointers src, dst are biased by 8*(count-1),to last element. | |
1365 | 2351 __ align(OptoLoopAlignment); |
0 | 2352 |
2353 __ BIND(L_store_element); | |
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2354 __ store_heap_oop(to_element_addr, rax_oop); // store the oop |
304 | 2355 __ increment(count); // increment the count toward zero |
0 | 2356 __ jcc(Assembler::zero, L_do_card_marks); |
2357 | |
2358 // ======== loop entry is here ======== | |
2359 __ BIND(L_load_element); | |
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2360 __ load_heap_oop(rax_oop, from_element_addr); // load the oop |
304 | 2361 __ testptr(rax_oop, rax_oop); |
0 | 2362 __ jcc(Assembler::zero, L_store_element); |
2363 | |
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2364 __ load_klass(r11_klass, rax_oop);// query the object klass |
0 | 2365 generate_type_check(r11_klass, ckoff, ckval, L_store_element); |
2366 // ======== end loop ======== | |
2367 | |
2368 // It was a real error; we must depend on the caller to finish the job. | |
2369 // Register rdx = -1 * number of *remaining* oops, r14 = *total* oops. | |
2370 // Emit GC store barriers for the oops we have copied (r14 + rdx), | |
2371 // and report their number to the caller. | |
10324
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2372 assert_different_registers(rax, r14_length, count, to, end_to, rcx, rscratch1); |
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2373 Label L_post_barrier; |
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2374 __ addptr(r14_length, count); // K = (original - remaining) oops |
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2375 __ movptr(rax, r14_length); // save the value |
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2376 __ notptr(rax); // report (-1^K) to caller (does not affect flags) |
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2377 __ jccb(Assembler::notZero, L_post_barrier); |
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2378 __ jmp(L_done); // K == 0, nothing was copied, skip post barrier |
0 | 2379 |
2380 // Come here on success only. | |
2381 __ BIND(L_do_card_marks); | |
10324
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2382 __ xorptr(rax, rax); // return 0 on success |
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2383 |
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2384 __ BIND(L_post_barrier); |
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2385 gen_write_ref_array_post_barrier(to, r14_length, rscratch1); |
0 | 2386 |
2387 // Common exit point (success or failure). | |
2388 __ BIND(L_done); | |
304 | 2389 __ movptr(r13, Address(rsp, saved_r13_offset * wordSize)); |
2390 __ movptr(r14, Address(rsp, saved_r14_offset * wordSize)); | |
0 | 2391 restore_arg_regs(); |
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2392 inc_counter_np(SharedRuntime::_checkcast_array_copy_ctr); // Update counter after rscratch1 is free |
0 | 2393 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2394 __ ret(0); | |
2395 | |
2396 return start; | |
2397 } | |
2398 | |
2399 // | |
2400 // Generate 'unsafe' array copy stub | |
2401 // Though just as safe as the other stubs, it takes an unscaled | |
2402 // size_t argument instead of an element count. | |
2403 // | |
2404 // Input: | |
2405 // c_rarg0 - source array address | |
2406 // c_rarg1 - destination array address | |
2407 // c_rarg2 - byte count, treated as ssize_t, can be zero | |
2408 // | |
2409 // Examines the alignment of the operands and dispatches | |
2410 // to a long, int, short, or byte copy loop. | |
2411 // | |
2313
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2412 address generate_unsafe_copy(const char *name, |
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2413 address byte_copy_entry, address short_copy_entry, |
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2414 address int_copy_entry, address long_copy_entry) { |
0 | 2415 |
2416 Label L_long_aligned, L_int_aligned, L_short_aligned; | |
2417 | |
2418 // Input registers (before setup_arg_regs) | |
2419 const Register from = c_rarg0; // source array address | |
2420 const Register to = c_rarg1; // destination array address | |
2421 const Register size = c_rarg2; // byte count (size_t) | |
2422 | |
2423 // Register used as a temp | |
2424 const Register bits = rax; // test copy of low bits | |
2425 | |
2426 __ align(CodeEntryAlignment); | |
2427 StubCodeMark mark(this, "StubRoutines", name); | |
2428 address start = __ pc(); | |
2429 | |
2430 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2431 | |
2432 // bump this on entry, not on exit: | |
2433 inc_counter_np(SharedRuntime::_unsafe_array_copy_ctr); | |
2434 | |
304 | 2435 __ mov(bits, from); |
2436 __ orptr(bits, to); | |
2437 __ orptr(bits, size); | |
0 | 2438 |
2439 __ testb(bits, BytesPerLong-1); | |
2440 __ jccb(Assembler::zero, L_long_aligned); | |
2441 | |
2442 __ testb(bits, BytesPerInt-1); | |
2443 __ jccb(Assembler::zero, L_int_aligned); | |
2444 | |
2445 __ testb(bits, BytesPerShort-1); | |
2446 __ jump_cc(Assembler::notZero, RuntimeAddress(byte_copy_entry)); | |
2447 | |
2448 __ BIND(L_short_aligned); | |
304 | 2449 __ shrptr(size, LogBytesPerShort); // size => short_count |
0 | 2450 __ jump(RuntimeAddress(short_copy_entry)); |
2451 | |
2452 __ BIND(L_int_aligned); | |
304 | 2453 __ shrptr(size, LogBytesPerInt); // size => int_count |
0 | 2454 __ jump(RuntimeAddress(int_copy_entry)); |
2455 | |
2456 __ BIND(L_long_aligned); | |
304 | 2457 __ shrptr(size, LogBytesPerLong); // size => qword_count |
0 | 2458 __ jump(RuntimeAddress(long_copy_entry)); |
2459 | |
2460 return start; | |
2461 } | |
2462 | |
2463 // Perform range checks on the proposed arraycopy. | |
2464 // Kills temp, but nothing else. | |
2465 // Also, clean the sign bits of src_pos and dst_pos. | |
2466 void arraycopy_range_checks(Register src, // source array oop (c_rarg0) | |
2467 Register src_pos, // source position (c_rarg1) | |
2468 Register dst, // destination array oo (c_rarg2) | |
2469 Register dst_pos, // destination position (c_rarg3) | |
2470 Register length, | |
2471 Register temp, | |
2472 Label& L_failed) { | |
2473 BLOCK_COMMENT("arraycopy_range_checks:"); | |
2474 | |
2475 // if (src_pos + length > arrayOop(src)->length()) FAIL; | |
2476 __ movl(temp, length); | |
2477 __ addl(temp, src_pos); // src_pos + length | |
2478 __ cmpl(temp, Address(src, arrayOopDesc::length_offset_in_bytes())); | |
2479 __ jcc(Assembler::above, L_failed); | |
2480 | |
2481 // if (dst_pos + length > arrayOop(dst)->length()) FAIL; | |
2482 __ movl(temp, length); | |
2483 __ addl(temp, dst_pos); // dst_pos + length | |
2484 __ cmpl(temp, Address(dst, arrayOopDesc::length_offset_in_bytes())); | |
2485 __ jcc(Assembler::above, L_failed); | |
2486 | |
2487 // Have to clean up high 32-bits of 'src_pos' and 'dst_pos'. | |
2488 // Move with sign extension can be used since they are positive. | |
2489 __ movslq(src_pos, src_pos); | |
2490 __ movslq(dst_pos, dst_pos); | |
2491 | |
2492 BLOCK_COMMENT("arraycopy_range_checks done"); | |
2493 } | |
2494 | |
2495 // | |
2496 // Generate generic array copy stubs | |
2497 // | |
2498 // Input: | |
2499 // c_rarg0 - src oop | |
2500 // c_rarg1 - src_pos (32-bits) | |
2501 // c_rarg2 - dst oop | |
2502 // c_rarg3 - dst_pos (32-bits) | |
2503 // not Win64 | |
2504 // c_rarg4 - element count (32-bits) | |
2505 // Win64 | |
2506 // rsp+40 - element count (32-bits) | |
2507 // | |
2508 // Output: | |
2509 // rax == 0 - success | |
2510 // rax == -1^K - failure, where K is partial transfer count | |
2511 // | |
2313
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2512 address generate_generic_copy(const char *name, |
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2513 address byte_copy_entry, address short_copy_entry, |
2409
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2514 address int_copy_entry, address oop_copy_entry, |
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2515 address long_copy_entry, address checkcast_copy_entry) { |
0 | 2516 |
2517 Label L_failed, L_failed_0, L_objArray; | |
2518 Label L_copy_bytes, L_copy_shorts, L_copy_ints, L_copy_longs; | |
2519 | |
2520 // Input registers | |
2521 const Register src = c_rarg0; // source array oop | |
2522 const Register src_pos = c_rarg1; // source position | |
2523 const Register dst = c_rarg2; // destination array oop | |
2524 const Register dst_pos = c_rarg3; // destination position | |
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2525 #ifndef _WIN64 |
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2526 const Register length = c_rarg4; |
0 | 2527 #else |
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2528 const Address length(rsp, 6 * wordSize); // elements count is on stack on Win64 |
0 | 2529 #endif |
2530 | |
2531 { int modulus = CodeEntryAlignment; | |
2532 int target = modulus - 5; // 5 = sizeof jmp(L_failed) | |
2533 int advance = target - (__ offset() % modulus); | |
2534 if (advance < 0) advance += modulus; | |
2535 if (advance > 0) __ nop(advance); | |
2536 } | |
2537 StubCodeMark mark(this, "StubRoutines", name); | |
2538 | |
2539 // Short-hop target to L_failed. Makes for denser prologue code. | |
2540 __ BIND(L_failed_0); | |
2541 __ jmp(L_failed); | |
2542 assert(__ offset() % CodeEntryAlignment == 0, "no further alignment needed"); | |
2543 | |
2544 __ align(CodeEntryAlignment); | |
2545 address start = __ pc(); | |
2546 | |
2547 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2548 | |
2549 // bump this on entry, not on exit: | |
2550 inc_counter_np(SharedRuntime::_generic_array_copy_ctr); | |
2551 | |
2552 //----------------------------------------------------------------------- | |
2553 // Assembler stub will be used for this call to arraycopy | |
2554 // if the following conditions are met: | |
2555 // | |
2556 // (1) src and dst must not be null. | |
2557 // (2) src_pos must not be negative. | |
2558 // (3) dst_pos must not be negative. | |
2559 // (4) length must not be negative. | |
2560 // (5) src klass and dst klass should be the same and not NULL. | |
2561 // (6) src and dst should be arrays. | |
2562 // (7) src_pos + length must not exceed length of src. | |
2563 // (8) dst_pos + length must not exceed length of dst. | |
2564 // | |
2565 | |
2566 // if (src == NULL) return -1; | |
304 | 2567 __ testptr(src, src); // src oop |
0 | 2568 size_t j1off = __ offset(); |
2569 __ jccb(Assembler::zero, L_failed_0); | |
2570 | |
2571 // if (src_pos < 0) return -1; | |
2572 __ testl(src_pos, src_pos); // src_pos (32-bits) | |
2573 __ jccb(Assembler::negative, L_failed_0); | |
2574 | |
2575 // if (dst == NULL) return -1; | |
304 | 2576 __ testptr(dst, dst); // dst oop |
0 | 2577 __ jccb(Assembler::zero, L_failed_0); |
2578 | |
2579 // if (dst_pos < 0) return -1; | |
2580 __ testl(dst_pos, dst_pos); // dst_pos (32-bits) | |
2581 size_t j4off = __ offset(); | |
2582 __ jccb(Assembler::negative, L_failed_0); | |
2583 | |
2584 // The first four tests are very dense code, | |
2585 // but not quite dense enough to put four | |
2586 // jumps in a 16-byte instruction fetch buffer. | |
2587 // That's good, because some branch predicters | |
2588 // do not like jumps so close together. | |
2589 // Make sure of this. | |
2590 guarantee(((j1off ^ j4off) & ~15) != 0, "I$ line of 1st & 4th jumps"); | |
2591 | |
2592 // registers used as temp | |
2593 const Register r11_length = r11; // elements count to copy | |
2594 const Register r10_src_klass = r10; // array klass | |
2595 | |
2596 // if (length < 0) return -1; | |
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2597 __ movl(r11_length, length); // length (elements count, 32-bits value) |
0 | 2598 __ testl(r11_length, r11_length); |
2599 __ jccb(Assembler::negative, L_failed_0); | |
2600 | |
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2601 __ load_klass(r10_src_klass, src); |
0 | 2602 #ifdef ASSERT |
2603 // assert(src->klass() != NULL); | |
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2604 { |
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2605 BLOCK_COMMENT("assert klasses not null {"); |
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2606 Label L1, L2; |
304 | 2607 __ testptr(r10_src_klass, r10_src_klass); |
0 | 2608 __ jcc(Assembler::notZero, L2); // it is broken if klass is NULL |
2609 __ bind(L1); | |
2610 __ stop("broken null klass"); | |
2611 __ bind(L2); | |
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2612 __ load_klass(rax, dst); |
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2613 __ cmpq(rax, 0); |
0 | 2614 __ jcc(Assembler::equal, L1); // this would be broken also |
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2615 BLOCK_COMMENT("} assert klasses not null done"); |
0 | 2616 } |
2617 #endif | |
2618 | |
2619 // Load layout helper (32-bits) | |
2620 // | |
2621 // |array_tag| | header_size | element_type | |log2_element_size| | |
2622 // 32 30 24 16 8 2 0 | |
2623 // | |
2624 // array_tag: typeArray = 0x3, objArray = 0x2, non-array = 0x0 | |
2625 // | |
2626 | |
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2627 const int lh_offset = in_bytes(Klass::layout_helper_offset()); |
0 | 2628 |
2629 // Handle objArrays completely differently... | |
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2630 const jint objArray_lh = Klass::array_layout_helper(T_OBJECT); |
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2631 __ cmpl(Address(r10_src_klass, lh_offset), objArray_lh); |
0 | 2632 __ jcc(Assembler::equal, L_objArray); |
2633 | |
2634 // if (src->klass() != dst->klass()) return -1; | |
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2635 __ load_klass(rax, dst); |
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2636 __ cmpq(r10_src_klass, rax); |
0 | 2637 __ jcc(Assembler::notEqual, L_failed); |
2638 | |
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2639 const Register rax_lh = rax; // layout helper |
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2640 __ movl(rax_lh, Address(r10_src_klass, lh_offset)); |
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2641 |
0 | 2642 // if (!src->is_Array()) return -1; |
2643 __ cmpl(rax_lh, Klass::_lh_neutral_value); | |
2644 __ jcc(Assembler::greaterEqual, L_failed); | |
2645 | |
2646 // At this point, it is known to be a typeArray (array_tag 0x3). | |
2647 #ifdef ASSERT | |
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2648 { |
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2649 BLOCK_COMMENT("assert primitive array {"); |
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2650 Label L; |
0 | 2651 __ cmpl(rax_lh, (Klass::_lh_array_tag_type_value << Klass::_lh_array_tag_shift)); |
2652 __ jcc(Assembler::greaterEqual, L); | |
2653 __ stop("must be a primitive array"); | |
2654 __ bind(L); | |
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2655 BLOCK_COMMENT("} assert primitive array done"); |
0 | 2656 } |
2657 #endif | |
2658 | |
2659 arraycopy_range_checks(src, src_pos, dst, dst_pos, r11_length, | |
2660 r10, L_failed); | |
2661 | |
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6725
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|
2662 // TypeArrayKlass |
0 | 2663 // |
2664 // src_addr = (src + array_header_in_bytes()) + (src_pos << log2elemsize); | |
2665 // dst_addr = (dst + array_header_in_bytes()) + (dst_pos << log2elemsize); | |
2666 // | |
2667 | |
2668 const Register r10_offset = r10; // array offset | |
2669 const Register rax_elsize = rax_lh; // element size | |
2670 | |
2671 __ movl(r10_offset, rax_lh); | |
2672 __ shrl(r10_offset, Klass::_lh_header_size_shift); | |
304 | 2673 __ andptr(r10_offset, Klass::_lh_header_size_mask); // array_offset |
2674 __ addptr(src, r10_offset); // src array offset | |
2675 __ addptr(dst, r10_offset); // dst array offset | |
0 | 2676 BLOCK_COMMENT("choose copy loop based on element size"); |
2677 __ andl(rax_lh, Klass::_lh_log2_element_size_mask); // rax_lh -> rax_elsize | |
2678 | |
2679 // next registers should be set before the jump to corresponding stub | |
2680 const Register from = c_rarg0; // source array address | |
2681 const Register to = c_rarg1; // destination array address | |
2682 const Register count = c_rarg2; // elements count | |
2683 | |
2684 // 'from', 'to', 'count' registers should be set in such order | |
2685 // since they are the same as 'src', 'src_pos', 'dst'. | |
2686 | |
2687 __ BIND(L_copy_bytes); | |
2688 __ cmpl(rax_elsize, 0); | |
2689 __ jccb(Assembler::notEqual, L_copy_shorts); | |
304 | 2690 __ lea(from, Address(src, src_pos, Address::times_1, 0));// src_addr |
2691 __ lea(to, Address(dst, dst_pos, Address::times_1, 0));// dst_addr | |
2692 __ movl2ptr(count, r11_length); // length | |
0 | 2693 __ jump(RuntimeAddress(byte_copy_entry)); |
2694 | |
2695 __ BIND(L_copy_shorts); | |
2696 __ cmpl(rax_elsize, LogBytesPerShort); | |
2697 __ jccb(Assembler::notEqual, L_copy_ints); | |
304 | 2698 __ lea(from, Address(src, src_pos, Address::times_2, 0));// src_addr |
2699 __ lea(to, Address(dst, dst_pos, Address::times_2, 0));// dst_addr | |
2700 __ movl2ptr(count, r11_length); // length | |
0 | 2701 __ jump(RuntimeAddress(short_copy_entry)); |
2702 | |
2703 __ BIND(L_copy_ints); | |
2704 __ cmpl(rax_elsize, LogBytesPerInt); | |
2705 __ jccb(Assembler::notEqual, L_copy_longs); | |
304 | 2706 __ lea(from, Address(src, src_pos, Address::times_4, 0));// src_addr |
2707 __ lea(to, Address(dst, dst_pos, Address::times_4, 0));// dst_addr | |
2708 __ movl2ptr(count, r11_length); // length | |
0 | 2709 __ jump(RuntimeAddress(int_copy_entry)); |
2710 | |
2711 __ BIND(L_copy_longs); | |
2712 #ifdef ASSERT | |
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2713 { |
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2714 BLOCK_COMMENT("assert long copy {"); |
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2715 Label L; |
0 | 2716 __ cmpl(rax_elsize, LogBytesPerLong); |
2717 __ jcc(Assembler::equal, L); | |
2718 __ stop("must be long copy, but elsize is wrong"); | |
2719 __ bind(L); | |
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2720 BLOCK_COMMENT("} assert long copy done"); |
0 | 2721 } |
2722 #endif | |
304 | 2723 __ lea(from, Address(src, src_pos, Address::times_8, 0));// src_addr |
2724 __ lea(to, Address(dst, dst_pos, Address::times_8, 0));// dst_addr | |
2725 __ movl2ptr(count, r11_length); // length | |
0 | 2726 __ jump(RuntimeAddress(long_copy_entry)); |
2727 | |
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2728 // ObjArrayKlass |
0 | 2729 __ BIND(L_objArray); |
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2730 // live at this point: r10_src_klass, r11_length, src[_pos], dst[_pos] |
0 | 2731 |
2732 Label L_plain_copy, L_checkcast_copy; | |
2733 // test array classes for subtyping | |
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2734 __ load_klass(rax, dst); |
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2735 __ cmpq(r10_src_klass, rax); // usual case is exact equality |
0 | 2736 __ jcc(Assembler::notEqual, L_checkcast_copy); |
2737 | |
2738 // Identically typed arrays can be copied without element-wise checks. | |
2739 arraycopy_range_checks(src, src_pos, dst, dst_pos, r11_length, | |
2740 r10, L_failed); | |
2741 | |
304 | 2742 __ lea(from, Address(src, src_pos, TIMES_OOP, |
0 | 2743 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // src_addr |
304 | 2744 __ lea(to, Address(dst, dst_pos, TIMES_OOP, |
2745 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // dst_addr | |
2746 __ movl2ptr(count, r11_length); // length | |
0 | 2747 __ BIND(L_plain_copy); |
2748 __ jump(RuntimeAddress(oop_copy_entry)); | |
2749 | |
2750 __ BIND(L_checkcast_copy); | |
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2751 // live at this point: r10_src_klass, r11_length, rax (dst_klass) |
0 | 2752 { |
2753 // Before looking at dst.length, make sure dst is also an objArray. | |
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2754 __ cmpl(Address(rax, lh_offset), objArray_lh); |
0 | 2755 __ jcc(Assembler::notEqual, L_failed); |
2756 | |
2757 // It is safe to examine both src.length and dst.length. | |
2758 arraycopy_range_checks(src, src_pos, dst, dst_pos, r11_length, | |
2759 rax, L_failed); | |
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2760 |
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2761 const Register r11_dst_klass = r11; |
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2762 __ load_klass(r11_dst_klass, dst); // reload |
0 | 2763 |
2764 // Marshal the base address arguments now, freeing registers. | |
304 | 2765 __ lea(from, Address(src, src_pos, TIMES_OOP, |
0 | 2766 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
304 | 2767 __ lea(to, Address(dst, dst_pos, TIMES_OOP, |
0 | 2768 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
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2769 __ movl(count, length); // length (reloaded) |
0 | 2770 Register sco_temp = c_rarg3; // this register is free now |
2771 assert_different_registers(from, to, count, sco_temp, | |
2772 r11_dst_klass, r10_src_klass); | |
2773 assert_clean_int(count, sco_temp); | |
2774 | |
2775 // Generate the type check. | |
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2776 const int sco_offset = in_bytes(Klass::super_check_offset_offset()); |
0 | 2777 __ movl(sco_temp, Address(r11_dst_klass, sco_offset)); |
2778 assert_clean_int(sco_temp, rax); | |
2779 generate_type_check(r10_src_klass, sco_temp, r11_dst_klass, L_plain_copy); | |
2780 | |
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2781 // Fetch destination element klass from the ObjArrayKlass header. |
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2782 int ek_offset = in_bytes(ObjArrayKlass::element_klass_offset()); |
304 | 2783 __ movptr(r11_dst_klass, Address(r11_dst_klass, ek_offset)); |
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2784 __ movl( sco_temp, Address(r11_dst_klass, sco_offset)); |
0 | 2785 assert_clean_int(sco_temp, rax); |
2786 | |
2787 // the checkcast_copy loop needs two extra arguments: | |
2788 assert(c_rarg3 == sco_temp, "#3 already in place"); | |
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2789 // Set up arguments for checkcast_copy_entry. |
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2790 setup_arg_regs(4); |
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2791 __ movptr(r8, r11_dst_klass); // dst.klass.element_klass, r8 is c_rarg4 on Linux/Solaris |
0 | 2792 __ jump(RuntimeAddress(checkcast_copy_entry)); |
2793 } | |
2794 | |
2795 __ BIND(L_failed); | |
304 | 2796 __ xorptr(rax, rax); |
2797 __ notptr(rax); // return -1 | |
0 | 2798 __ leave(); // required for proper stackwalking of RuntimeStub frame |
2799 __ ret(0); | |
2800 | |
2801 return start; | |
2802 } | |
2803 | |
2804 void generate_arraycopy_stubs() { | |
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2805 address entry; |
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2806 address entry_jbyte_arraycopy; |
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2807 address entry_jshort_arraycopy; |
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2808 address entry_jint_arraycopy; |
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2809 address entry_oop_arraycopy; |
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2810 address entry_jlong_arraycopy; |
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2811 address entry_checkcast_arraycopy; |
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2812 |
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2813 StubRoutines::_jbyte_disjoint_arraycopy = generate_disjoint_byte_copy(false, &entry, |
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2814 "jbyte_disjoint_arraycopy"); |
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2815 StubRoutines::_jbyte_arraycopy = generate_conjoint_byte_copy(false, entry, &entry_jbyte_arraycopy, |
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2816 "jbyte_arraycopy"); |
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2817 |
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2818 StubRoutines::_jshort_disjoint_arraycopy = generate_disjoint_short_copy(false, &entry, |
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2819 "jshort_disjoint_arraycopy"); |
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2820 StubRoutines::_jshort_arraycopy = generate_conjoint_short_copy(false, entry, &entry_jshort_arraycopy, |
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2821 "jshort_arraycopy"); |
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2822 |
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2823 StubRoutines::_jint_disjoint_arraycopy = generate_disjoint_int_oop_copy(false, false, &entry, |
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2824 "jint_disjoint_arraycopy"); |
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2825 StubRoutines::_jint_arraycopy = generate_conjoint_int_oop_copy(false, false, entry, |
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2826 &entry_jint_arraycopy, "jint_arraycopy"); |
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2827 |
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2828 StubRoutines::_jlong_disjoint_arraycopy = generate_disjoint_long_oop_copy(false, false, &entry, |
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2829 "jlong_disjoint_arraycopy"); |
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2830 StubRoutines::_jlong_arraycopy = generate_conjoint_long_oop_copy(false, false, entry, |
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2831 &entry_jlong_arraycopy, "jlong_arraycopy"); |
0 | 2832 |
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2833 |
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2834 if (UseCompressedOops) { |
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2835 StubRoutines::_oop_disjoint_arraycopy = generate_disjoint_int_oop_copy(false, true, &entry, |
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2836 "oop_disjoint_arraycopy"); |
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2837 StubRoutines::_oop_arraycopy = generate_conjoint_int_oop_copy(false, true, entry, |
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2838 &entry_oop_arraycopy, "oop_arraycopy"); |
2324 | 2839 StubRoutines::_oop_disjoint_arraycopy_uninit = generate_disjoint_int_oop_copy(false, true, &entry, |
2840 "oop_disjoint_arraycopy_uninit", | |
2841 /*dest_uninitialized*/true); | |
2842 StubRoutines::_oop_arraycopy_uninit = generate_conjoint_int_oop_copy(false, true, entry, | |
2843 NULL, "oop_arraycopy_uninit", | |
2844 /*dest_uninitialized*/true); | |
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2845 } else { |
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2846 StubRoutines::_oop_disjoint_arraycopy = generate_disjoint_long_oop_copy(false, true, &entry, |
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2847 "oop_disjoint_arraycopy"); |
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2848 StubRoutines::_oop_arraycopy = generate_conjoint_long_oop_copy(false, true, entry, |
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2849 &entry_oop_arraycopy, "oop_arraycopy"); |
2324 | 2850 StubRoutines::_oop_disjoint_arraycopy_uninit = generate_disjoint_long_oop_copy(false, true, &entry, |
2851 "oop_disjoint_arraycopy_uninit", | |
2852 /*dest_uninitialized*/true); | |
2853 StubRoutines::_oop_arraycopy_uninit = generate_conjoint_long_oop_copy(false, true, entry, | |
2854 NULL, "oop_arraycopy_uninit", | |
2855 /*dest_uninitialized*/true); | |
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2856 } |
0 | 2857 |
2324 | 2858 StubRoutines::_checkcast_arraycopy = generate_checkcast_copy("checkcast_arraycopy", &entry_checkcast_arraycopy); |
2859 StubRoutines::_checkcast_arraycopy_uninit = generate_checkcast_copy("checkcast_arraycopy_uninit", NULL, | |
2860 /*dest_uninitialized*/true); | |
2861 | |
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2862 StubRoutines::_unsafe_arraycopy = generate_unsafe_copy("unsafe_arraycopy", |
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2863 entry_jbyte_arraycopy, |
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2864 entry_jshort_arraycopy, |
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2865 entry_jint_arraycopy, |
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2866 entry_jlong_arraycopy); |
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2867 StubRoutines::_generic_arraycopy = generate_generic_copy("generic_arraycopy", |
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2868 entry_jbyte_arraycopy, |
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2869 entry_jshort_arraycopy, |
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2870 entry_jint_arraycopy, |
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2871 entry_oop_arraycopy, |
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2872 entry_jlong_arraycopy, |
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2873 entry_checkcast_arraycopy); |
0 | 2874 |
1763 | 2875 StubRoutines::_jbyte_fill = generate_fill(T_BYTE, false, "jbyte_fill"); |
2876 StubRoutines::_jshort_fill = generate_fill(T_SHORT, false, "jshort_fill"); | |
2877 StubRoutines::_jint_fill = generate_fill(T_INT, false, "jint_fill"); | |
2878 StubRoutines::_arrayof_jbyte_fill = generate_fill(T_BYTE, true, "arrayof_jbyte_fill"); | |
2879 StubRoutines::_arrayof_jshort_fill = generate_fill(T_SHORT, true, "arrayof_jshort_fill"); | |
2880 StubRoutines::_arrayof_jint_fill = generate_fill(T_INT, true, "arrayof_jint_fill"); | |
2881 | |
0 | 2882 // We don't generate specialized code for HeapWord-aligned source |
2883 // arrays, so just use the code we've already generated | |
2884 StubRoutines::_arrayof_jbyte_disjoint_arraycopy = StubRoutines::_jbyte_disjoint_arraycopy; | |
2885 StubRoutines::_arrayof_jbyte_arraycopy = StubRoutines::_jbyte_arraycopy; | |
2886 | |
2887 StubRoutines::_arrayof_jshort_disjoint_arraycopy = StubRoutines::_jshort_disjoint_arraycopy; | |
2888 StubRoutines::_arrayof_jshort_arraycopy = StubRoutines::_jshort_arraycopy; | |
2889 | |
2890 StubRoutines::_arrayof_jint_disjoint_arraycopy = StubRoutines::_jint_disjoint_arraycopy; | |
2891 StubRoutines::_arrayof_jint_arraycopy = StubRoutines::_jint_arraycopy; | |
2892 | |
2893 StubRoutines::_arrayof_jlong_disjoint_arraycopy = StubRoutines::_jlong_disjoint_arraycopy; | |
2894 StubRoutines::_arrayof_jlong_arraycopy = StubRoutines::_jlong_arraycopy; | |
2895 | |
2896 StubRoutines::_arrayof_oop_disjoint_arraycopy = StubRoutines::_oop_disjoint_arraycopy; | |
2897 StubRoutines::_arrayof_oop_arraycopy = StubRoutines::_oop_arraycopy; | |
2324 | 2898 |
2899 StubRoutines::_arrayof_oop_disjoint_arraycopy_uninit = StubRoutines::_oop_disjoint_arraycopy_uninit; | |
2900 StubRoutines::_arrayof_oop_arraycopy_uninit = StubRoutines::_oop_arraycopy_uninit; | |
0 | 2901 } |
2902 | |
1174
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2903 void generate_math_stubs() { |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2904 { |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2905 StubCodeMark mark(this, "StubRoutines", "log"); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2906 StubRoutines::_intrinsic_log = (double (*)(double)) __ pc(); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2907 |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2908 __ subq(rsp, 8); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2909 __ movdbl(Address(rsp, 0), xmm0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2910 __ fld_d(Address(rsp, 0)); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2911 __ flog(); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2912 __ fstp_d(Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2913 __ movdbl(xmm0, Address(rsp, 0)); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2914 __ addq(rsp, 8); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2915 __ ret(0); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2916 } |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
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diff
changeset
|
2917 { |
ddb7834449d0
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never
parents:
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diff
changeset
|
2918 StubCodeMark mark(this, "StubRoutines", "log10"); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2919 StubRoutines::_intrinsic_log10 = (double (*)(double)) __ pc(); |
ddb7834449d0
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never
parents:
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diff
changeset
|
2920 |
ddb7834449d0
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never
parents:
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diff
changeset
|
2921 __ subq(rsp, 8); |
ddb7834449d0
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never
parents:
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diff
changeset
|
2922 __ movdbl(Address(rsp, 0), xmm0); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
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parents:
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diff
changeset
|
2923 __ fld_d(Address(rsp, 0)); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2924 __ flog10(); |
ddb7834449d0
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never
parents:
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diff
changeset
|
2925 __ fstp_d(Address(rsp, 0)); |
ddb7834449d0
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never
parents:
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diff
changeset
|
2926 __ movdbl(xmm0, Address(rsp, 0)); |
ddb7834449d0
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parents:
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diff
changeset
|
2927 __ addq(rsp, 8); |
ddb7834449d0
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parents:
1108
diff
changeset
|
2928 __ ret(0); |
ddb7834449d0
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parents:
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diff
changeset
|
2929 } |
ddb7834449d0
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parents:
1108
diff
changeset
|
2930 { |
ddb7834449d0
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never
parents:
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diff
changeset
|
2931 StubCodeMark mark(this, "StubRoutines", "sin"); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2932 StubRoutines::_intrinsic_sin = (double (*)(double)) __ pc(); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2933 |
ddb7834449d0
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parents:
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diff
changeset
|
2934 __ subq(rsp, 8); |
ddb7834449d0
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never
parents:
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diff
changeset
|
2935 __ movdbl(Address(rsp, 0), xmm0); |
ddb7834449d0
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parents:
1108
diff
changeset
|
2936 __ fld_d(Address(rsp, 0)); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2937 __ trigfunc('s'); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2938 __ fstp_d(Address(rsp, 0)); |
ddb7834449d0
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never
parents:
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diff
changeset
|
2939 __ movdbl(xmm0, Address(rsp, 0)); |
ddb7834449d0
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parents:
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diff
changeset
|
2940 __ addq(rsp, 8); |
ddb7834449d0
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parents:
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diff
changeset
|
2941 __ ret(0); |
ddb7834449d0
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parents:
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diff
changeset
|
2942 } |
ddb7834449d0
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parents:
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diff
changeset
|
2943 { |
ddb7834449d0
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parents:
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diff
changeset
|
2944 StubCodeMark mark(this, "StubRoutines", "cos"); |
ddb7834449d0
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parents:
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diff
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|
2945 StubRoutines::_intrinsic_cos = (double (*)(double)) __ pc(); |
ddb7834449d0
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parents:
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diff
changeset
|
2946 |
ddb7834449d0
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parents:
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diff
changeset
|
2947 __ subq(rsp, 8); |
ddb7834449d0
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parents:
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diff
changeset
|
2948 __ movdbl(Address(rsp, 0), xmm0); |
ddb7834449d0
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parents:
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diff
changeset
|
2949 __ fld_d(Address(rsp, 0)); |
ddb7834449d0
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parents:
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diff
changeset
|
2950 __ trigfunc('c'); |
ddb7834449d0
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parents:
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diff
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|
2951 __ fstp_d(Address(rsp, 0)); |
ddb7834449d0
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parents:
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diff
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|
2952 __ movdbl(xmm0, Address(rsp, 0)); |
ddb7834449d0
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parents:
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diff
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|
2953 __ addq(rsp, 8); |
ddb7834449d0
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parents:
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diff
changeset
|
2954 __ ret(0); |
ddb7834449d0
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parents:
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diff
changeset
|
2955 } |
ddb7834449d0
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parents:
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diff
changeset
|
2956 { |
ddb7834449d0
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diff
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|
2957 StubCodeMark mark(this, "StubRoutines", "tan"); |
ddb7834449d0
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parents:
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|
2958 StubRoutines::_intrinsic_tan = (double (*)(double)) __ pc(); |
ddb7834449d0
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parents:
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diff
changeset
|
2959 |
ddb7834449d0
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parents:
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diff
changeset
|
2960 __ subq(rsp, 8); |
ddb7834449d0
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never
parents:
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diff
changeset
|
2961 __ movdbl(Address(rsp, 0), xmm0); |
ddb7834449d0
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parents:
1108
diff
changeset
|
2962 __ fld_d(Address(rsp, 0)); |
ddb7834449d0
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parents:
1108
diff
changeset
|
2963 __ trigfunc('t'); |
ddb7834449d0
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parents:
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diff
changeset
|
2964 __ fstp_d(Address(rsp, 0)); |
ddb7834449d0
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never
parents:
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diff
changeset
|
2965 __ movdbl(xmm0, Address(rsp, 0)); |
ddb7834449d0
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parents:
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diff
changeset
|
2966 __ addq(rsp, 8); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2967 __ ret(0); |
ddb7834449d0
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never
parents:
1108
diff
changeset
|
2968 } |
6084
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2969 { |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2970 StubCodeMark mark(this, "StubRoutines", "exp"); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2971 StubRoutines::_intrinsic_exp = (double (*)(double)) __ pc(); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2972 |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2973 __ subq(rsp, 8); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2974 __ movdbl(Address(rsp, 0), xmm0); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2975 __ fld_d(Address(rsp, 0)); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2976 __ exp_with_fallback(0); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2977 __ fstp_d(Address(rsp, 0)); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2978 __ movdbl(xmm0, Address(rsp, 0)); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2979 __ addq(rsp, 8); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2980 __ ret(0); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2981 } |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2982 { |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2983 StubCodeMark mark(this, "StubRoutines", "pow"); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2984 StubRoutines::_intrinsic_pow = (double (*)(double,double)) __ pc(); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2985 |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2986 __ subq(rsp, 8); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2987 __ movdbl(Address(rsp, 0), xmm1); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2988 __ fld_d(Address(rsp, 0)); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2989 __ movdbl(Address(rsp, 0), xmm0); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2990 __ fld_d(Address(rsp, 0)); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2991 __ pow_with_fallback(0); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2992 __ fstp_d(Address(rsp, 0)); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2993 __ movdbl(xmm0, Address(rsp, 0)); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2994 __ addq(rsp, 8); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2995 __ ret(0); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
5903
diff
changeset
|
2996 } |
1174
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
1108
diff
changeset
|
2997 } |
ddb7834449d0
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never
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1108
diff
changeset
|
2998 |
6894 | 2999 // AES intrinsic stubs |
3000 enum {AESBlockSize = 16}; | |
3001 | |
3002 address generate_key_shuffle_mask() { | |
3003 __ align(16); | |
3004 StubCodeMark mark(this, "StubRoutines", "key_shuffle_mask"); | |
3005 address start = __ pc(); | |
3006 __ emit_data64( 0x0405060700010203, relocInfo::none ); | |
3007 __ emit_data64( 0x0c0d0e0f08090a0b, relocInfo::none ); | |
3008 return start; | |
3009 } | |
3010 | |
3011 // Utility routine for loading a 128-bit key word in little endian format | |
3012 // can optionally specify that the shuffle mask is already in an xmmregister | |
3013 void load_key(XMMRegister xmmdst, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) { | |
3014 __ movdqu(xmmdst, Address(key, offset)); | |
3015 if (xmm_shuf_mask != NULL) { | |
3016 __ pshufb(xmmdst, xmm_shuf_mask); | |
3017 } else { | |
3018 __ pshufb(xmmdst, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
3019 } | |
3020 } | |
3021 | |
3022 // Arguments: | |
3023 // | |
3024 // Inputs: | |
3025 // c_rarg0 - source byte array address | |
3026 // c_rarg1 - destination byte array address | |
3027 // c_rarg2 - K (key) in little endian int array | |
3028 // | |
3029 address generate_aescrypt_encryptBlock() { | |
7427 | 3030 assert(UseAES, "need AES instructions and misaligned SSE support"); |
6894 | 3031 __ align(CodeEntryAlignment); |
3032 StubCodeMark mark(this, "StubRoutines", "aescrypt_encryptBlock"); | |
3033 Label L_doLast; | |
3034 address start = __ pc(); | |
3035 | |
3036 const Register from = c_rarg0; // source array address | |
3037 const Register to = c_rarg1; // destination array address | |
3038 const Register key = c_rarg2; // key array address | |
3039 const Register keylen = rax; | |
3040 | |
3041 const XMMRegister xmm_result = xmm0; | |
7427 | 3042 const XMMRegister xmm_key_shuf_mask = xmm1; |
3043 // On win64 xmm6-xmm15 must be preserved so don't use them. | |
3044 const XMMRegister xmm_temp1 = xmm2; | |
3045 const XMMRegister xmm_temp2 = xmm3; | |
3046 const XMMRegister xmm_temp3 = xmm4; | |
3047 const XMMRegister xmm_temp4 = xmm5; | |
6894 | 3048 |
3049 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
3050 | |
7427 | 3051 // keylen could be only {11, 13, 15} * 4 = {44, 52, 60} |
6894 | 3052 __ movl(keylen, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); |
3053 | |
3054 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
3055 __ movdqu(xmm_result, Address(from, 0)); // get 16 bytes of input | |
3056 | |
3057 // For encryption, the java expanded key ordering is just what we need | |
3058 // we don't know if the key is aligned, hence not using load-execute form | |
3059 | |
7427 | 3060 load_key(xmm_temp1, key, 0x00, xmm_key_shuf_mask); |
3061 __ pxor(xmm_result, xmm_temp1); | |
3062 | |
3063 load_key(xmm_temp1, key, 0x10, xmm_key_shuf_mask); | |
3064 load_key(xmm_temp2, key, 0x20, xmm_key_shuf_mask); | |
3065 load_key(xmm_temp3, key, 0x30, xmm_key_shuf_mask); | |
3066 load_key(xmm_temp4, key, 0x40, xmm_key_shuf_mask); | |
3067 | |
3068 __ aesenc(xmm_result, xmm_temp1); | |
3069 __ aesenc(xmm_result, xmm_temp2); | |
3070 __ aesenc(xmm_result, xmm_temp3); | |
3071 __ aesenc(xmm_result, xmm_temp4); | |
3072 | |
3073 load_key(xmm_temp1, key, 0x50, xmm_key_shuf_mask); | |
3074 load_key(xmm_temp2, key, 0x60, xmm_key_shuf_mask); | |
3075 load_key(xmm_temp3, key, 0x70, xmm_key_shuf_mask); | |
3076 load_key(xmm_temp4, key, 0x80, xmm_key_shuf_mask); | |
3077 | |
3078 __ aesenc(xmm_result, xmm_temp1); | |
3079 __ aesenc(xmm_result, xmm_temp2); | |
3080 __ aesenc(xmm_result, xmm_temp3); | |
3081 __ aesenc(xmm_result, xmm_temp4); | |
3082 | |
3083 load_key(xmm_temp1, key, 0x90, xmm_key_shuf_mask); | |
3084 load_key(xmm_temp2, key, 0xa0, xmm_key_shuf_mask); | |
3085 | |
3086 __ cmpl(keylen, 44); | |
3087 __ jccb(Assembler::equal, L_doLast); | |
3088 | |
3089 __ aesenc(xmm_result, xmm_temp1); | |
3090 __ aesenc(xmm_result, xmm_temp2); | |
3091 | |
3092 load_key(xmm_temp1, key, 0xb0, xmm_key_shuf_mask); | |
3093 load_key(xmm_temp2, key, 0xc0, xmm_key_shuf_mask); | |
3094 | |
3095 __ cmpl(keylen, 52); | |
3096 __ jccb(Assembler::equal, L_doLast); | |
3097 | |
3098 __ aesenc(xmm_result, xmm_temp1); | |
3099 __ aesenc(xmm_result, xmm_temp2); | |
3100 | |
3101 load_key(xmm_temp1, key, 0xd0, xmm_key_shuf_mask); | |
3102 load_key(xmm_temp2, key, 0xe0, xmm_key_shuf_mask); | |
6894 | 3103 |
3104 __ BIND(L_doLast); | |
7427 | 3105 __ aesenc(xmm_result, xmm_temp1); |
3106 __ aesenclast(xmm_result, xmm_temp2); | |
6894 | 3107 __ movdqu(Address(to, 0), xmm_result); // store the result |
3108 __ xorptr(rax, rax); // return 0 | |
3109 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
3110 __ ret(0); | |
3111 | |
3112 return start; | |
3113 } | |
3114 | |
3115 | |
3116 // Arguments: | |
3117 // | |
3118 // Inputs: | |
3119 // c_rarg0 - source byte array address | |
3120 // c_rarg1 - destination byte array address | |
3121 // c_rarg2 - K (key) in little endian int array | |
3122 // | |
3123 address generate_aescrypt_decryptBlock() { | |
7427 | 3124 assert(UseAES, "need AES instructions and misaligned SSE support"); |
6894 | 3125 __ align(CodeEntryAlignment); |
3126 StubCodeMark mark(this, "StubRoutines", "aescrypt_decryptBlock"); | |
3127 Label L_doLast; | |
3128 address start = __ pc(); | |
3129 | |
3130 const Register from = c_rarg0; // source array address | |
3131 const Register to = c_rarg1; // destination array address | |
3132 const Register key = c_rarg2; // key array address | |
3133 const Register keylen = rax; | |
3134 | |
3135 const XMMRegister xmm_result = xmm0; | |
7427 | 3136 const XMMRegister xmm_key_shuf_mask = xmm1; |
3137 // On win64 xmm6-xmm15 must be preserved so don't use them. | |
3138 const XMMRegister xmm_temp1 = xmm2; | |
3139 const XMMRegister xmm_temp2 = xmm3; | |
3140 const XMMRegister xmm_temp3 = xmm4; | |
3141 const XMMRegister xmm_temp4 = xmm5; | |
6894 | 3142 |
3143 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
3144 | |
7427 | 3145 // keylen could be only {11, 13, 15} * 4 = {44, 52, 60} |
6894 | 3146 __ movl(keylen, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); |
3147 | |
3148 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
3149 __ movdqu(xmm_result, Address(from, 0)); | |
3150 | |
3151 // for decryption java expanded key ordering is rotated one position from what we want | |
3152 // so we start from 0x10 here and hit 0x00 last | |
3153 // we don't know if the key is aligned, hence not using load-execute form | |
7427 | 3154 load_key(xmm_temp1, key, 0x10, xmm_key_shuf_mask); |
3155 load_key(xmm_temp2, key, 0x20, xmm_key_shuf_mask); | |
3156 load_key(xmm_temp3, key, 0x30, xmm_key_shuf_mask); | |
3157 load_key(xmm_temp4, key, 0x40, xmm_key_shuf_mask); | |
3158 | |
3159 __ pxor (xmm_result, xmm_temp1); | |
3160 __ aesdec(xmm_result, xmm_temp2); | |
3161 __ aesdec(xmm_result, xmm_temp3); | |
3162 __ aesdec(xmm_result, xmm_temp4); | |
3163 | |
3164 load_key(xmm_temp1, key, 0x50, xmm_key_shuf_mask); | |
3165 load_key(xmm_temp2, key, 0x60, xmm_key_shuf_mask); | |
3166 load_key(xmm_temp3, key, 0x70, xmm_key_shuf_mask); | |
3167 load_key(xmm_temp4, key, 0x80, xmm_key_shuf_mask); | |
3168 | |
3169 __ aesdec(xmm_result, xmm_temp1); | |
3170 __ aesdec(xmm_result, xmm_temp2); | |
3171 __ aesdec(xmm_result, xmm_temp3); | |
3172 __ aesdec(xmm_result, xmm_temp4); | |
3173 | |
3174 load_key(xmm_temp1, key, 0x90, xmm_key_shuf_mask); | |
3175 load_key(xmm_temp2, key, 0xa0, xmm_key_shuf_mask); | |
3176 load_key(xmm_temp3, key, 0x00, xmm_key_shuf_mask); | |
3177 | |
3178 __ cmpl(keylen, 44); | |
3179 __ jccb(Assembler::equal, L_doLast); | |
3180 | |
3181 __ aesdec(xmm_result, xmm_temp1); | |
3182 __ aesdec(xmm_result, xmm_temp2); | |
3183 | |
3184 load_key(xmm_temp1, key, 0xb0, xmm_key_shuf_mask); | |
3185 load_key(xmm_temp2, key, 0xc0, xmm_key_shuf_mask); | |
3186 | |
3187 __ cmpl(keylen, 52); | |
3188 __ jccb(Assembler::equal, L_doLast); | |
3189 | |
3190 __ aesdec(xmm_result, xmm_temp1); | |
3191 __ aesdec(xmm_result, xmm_temp2); | |
3192 | |
3193 load_key(xmm_temp1, key, 0xd0, xmm_key_shuf_mask); | |
3194 load_key(xmm_temp2, key, 0xe0, xmm_key_shuf_mask); | |
6894 | 3195 |
3196 __ BIND(L_doLast); | |
7427 | 3197 __ aesdec(xmm_result, xmm_temp1); |
3198 __ aesdec(xmm_result, xmm_temp2); | |
3199 | |
6894 | 3200 // for decryption the aesdeclast operation is always on key+0x00 |
7427 | 3201 __ aesdeclast(xmm_result, xmm_temp3); |
6894 | 3202 __ movdqu(Address(to, 0), xmm_result); // store the result |
3203 __ xorptr(rax, rax); // return 0 | |
3204 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
3205 __ ret(0); | |
3206 | |
3207 return start; | |
3208 } | |
3209 | |
3210 | |
3211 // Arguments: | |
3212 // | |
3213 // Inputs: | |
3214 // c_rarg0 - source byte array address | |
3215 // c_rarg1 - destination byte array address | |
3216 // c_rarg2 - K (key) in little endian int array | |
3217 // c_rarg3 - r vector byte array address | |
3218 // c_rarg4 - input length | |
3219 // | |
3220 address generate_cipherBlockChaining_encryptAESCrypt() { | |
7427 | 3221 assert(UseAES, "need AES instructions and misaligned SSE support"); |
6894 | 3222 __ align(CodeEntryAlignment); |
3223 StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_encryptAESCrypt"); | |
3224 address start = __ pc(); | |
3225 | |
3226 Label L_exit, L_key_192_256, L_key_256, L_loopTop_128, L_loopTop_192, L_loopTop_256; | |
3227 const Register from = c_rarg0; // source array address | |
3228 const Register to = c_rarg1; // destination array address | |
3229 const Register key = c_rarg2; // key array address | |
3230 const Register rvec = c_rarg3; // r byte array initialized from initvector array address | |
3231 // and left with the results of the last encryption block | |
3232 #ifndef _WIN64 | |
3233 const Register len_reg = c_rarg4; // src len (must be multiple of blocksize 16) | |
3234 #else | |
14909 | 3235 const Address len_mem(rsp, 6 * wordSize); // length is on stack on Win64 |
6894 | 3236 const Register len_reg = r10; // pick the first volatile windows register |
3237 #endif | |
3238 const Register pos = rax; | |
3239 | |
3240 // xmm register assignments for the loops below | |
3241 const XMMRegister xmm_result = xmm0; | |
3242 const XMMRegister xmm_temp = xmm1; | |
3243 // keys 0-10 preloaded into xmm2-xmm12 | |
3244 const int XMM_REG_NUM_KEY_FIRST = 2; | |
7427 | 3245 const int XMM_REG_NUM_KEY_LAST = 15; |
6894 | 3246 const XMMRegister xmm_key0 = as_XMMRegister(XMM_REG_NUM_KEY_FIRST); |
7427 | 3247 const XMMRegister xmm_key10 = as_XMMRegister(XMM_REG_NUM_KEY_FIRST+10); |
3248 const XMMRegister xmm_key11 = as_XMMRegister(XMM_REG_NUM_KEY_FIRST+11); | |
3249 const XMMRegister xmm_key12 = as_XMMRegister(XMM_REG_NUM_KEY_FIRST+12); | |
3250 const XMMRegister xmm_key13 = as_XMMRegister(XMM_REG_NUM_KEY_FIRST+13); | |
6894 | 3251 |
3252 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
3253 | |
3254 #ifdef _WIN64 | |
3255 // on win64, fill len_reg from stack position | |
3256 __ movl(len_reg, len_mem); | |
7427 | 3257 // save the xmm registers which must be preserved 6-15 |
6894 | 3258 __ subptr(rsp, -rsp_after_call_off * wordSize); |
3259 for (int i = 6; i <= XMM_REG_NUM_KEY_LAST; i++) { | |
3260 __ movdqu(xmm_save(i), as_XMMRegister(i)); | |
3261 } | |
3262 #endif | |
3263 | |
3264 const XMMRegister xmm_key_shuf_mask = xmm_temp; // used temporarily to swap key bytes up front | |
3265 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
7427 | 3266 // load up xmm regs xmm2 thru xmm12 with key 0x00 - 0xa0 |
3267 for (int rnum = XMM_REG_NUM_KEY_FIRST, offset = 0x00; rnum <= XMM_REG_NUM_KEY_FIRST+10; rnum++) { | |
6894 | 3268 load_key(as_XMMRegister(rnum), key, offset, xmm_key_shuf_mask); |
3269 offset += 0x10; | |
3270 } | |
3271 __ movdqu(xmm_result, Address(rvec, 0x00)); // initialize xmm_result with r vec | |
3272 | |
3273 // now split to different paths depending on the keylen (len in ints of AESCrypt.KLE array (52=192, or 60=256)) | |
3274 __ movl(rax, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); | |
3275 __ cmpl(rax, 44); | |
3276 __ jcc(Assembler::notEqual, L_key_192_256); | |
3277 | |
3278 // 128 bit code follows here | |
3279 __ movptr(pos, 0); | |
3280 __ align(OptoLoopAlignment); | |
7427 | 3281 |
6894 | 3282 __ BIND(L_loopTop_128); |
3283 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input | |
3284 __ pxor (xmm_result, xmm_temp); // xor with the current r vector | |
3285 __ pxor (xmm_result, xmm_key0); // do the aes rounds | |
7427 | 3286 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_FIRST + 9; rnum++) { |
6894 | 3287 __ aesenc(xmm_result, as_XMMRegister(rnum)); |
3288 } | |
3289 __ aesenclast(xmm_result, xmm_key10); | |
3290 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
3291 // no need to store r to memory until we exit | |
3292 __ addptr(pos, AESBlockSize); | |
3293 __ subptr(len_reg, AESBlockSize); | |
3294 __ jcc(Assembler::notEqual, L_loopTop_128); | |
3295 | |
3296 __ BIND(L_exit); | |
3297 __ movdqu(Address(rvec, 0), xmm_result); // final value of r stored in rvec of CipherBlockChaining object | |
3298 | |
3299 #ifdef _WIN64 | |
3300 // restore xmm regs belonging to calling function | |
3301 for (int i = 6; i <= XMM_REG_NUM_KEY_LAST; i++) { | |
3302 __ movdqu(as_XMMRegister(i), xmm_save(i)); | |
3303 } | |
3304 #endif | |
14909 | 3305 __ movl(rax, 0); // return 0 (why?) |
6894 | 3306 __ leave(); // required for proper stackwalking of RuntimeStub frame |
3307 __ ret(0); | |
3308 | |
3309 __ BIND(L_key_192_256); | |
3310 // here rax = len in ints of AESCrypt.KLE array (52=192, or 60=256) | |
7427 | 3311 load_key(xmm_key11, key, 0xb0, xmm_key_shuf_mask); |
3312 load_key(xmm_key12, key, 0xc0, xmm_key_shuf_mask); | |
6894 | 3313 __ cmpl(rax, 52); |
3314 __ jcc(Assembler::notEqual, L_key_256); | |
3315 | |
3316 // 192-bit code follows here (could be changed to use more xmm registers) | |
3317 __ movptr(pos, 0); | |
3318 __ align(OptoLoopAlignment); | |
7427 | 3319 |
6894 | 3320 __ BIND(L_loopTop_192); |
3321 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input | |
3322 __ pxor (xmm_result, xmm_temp); // xor with the current r vector | |
3323 __ pxor (xmm_result, xmm_key0); // do the aes rounds | |
7427 | 3324 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_FIRST + 11; rnum++) { |
6894 | 3325 __ aesenc(xmm_result, as_XMMRegister(rnum)); |
3326 } | |
7427 | 3327 __ aesenclast(xmm_result, xmm_key12); |
6894 | 3328 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output |
3329 // no need to store r to memory until we exit | |
3330 __ addptr(pos, AESBlockSize); | |
3331 __ subptr(len_reg, AESBlockSize); | |
3332 __ jcc(Assembler::notEqual, L_loopTop_192); | |
3333 __ jmp(L_exit); | |
3334 | |
3335 __ BIND(L_key_256); | |
3336 // 256-bit code follows here (could be changed to use more xmm registers) | |
7427 | 3337 load_key(xmm_key13, key, 0xd0, xmm_key_shuf_mask); |
6894 | 3338 __ movptr(pos, 0); |
3339 __ align(OptoLoopAlignment); | |
7427 | 3340 |
6894 | 3341 __ BIND(L_loopTop_256); |
3342 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input | |
3343 __ pxor (xmm_result, xmm_temp); // xor with the current r vector | |
3344 __ pxor (xmm_result, xmm_key0); // do the aes rounds | |
7427 | 3345 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_FIRST + 13; rnum++) { |
6894 | 3346 __ aesenc(xmm_result, as_XMMRegister(rnum)); |
3347 } | |
3348 load_key(xmm_temp, key, 0xe0); | |
3349 __ aesenclast(xmm_result, xmm_temp); | |
3350 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
3351 // no need to store r to memory until we exit | |
3352 __ addptr(pos, AESBlockSize); | |
3353 __ subptr(len_reg, AESBlockSize); | |
3354 __ jcc(Assembler::notEqual, L_loopTop_256); | |
3355 __ jmp(L_exit); | |
3356 | |
3357 return start; | |
3358 } | |
3359 | |
11127 | 3360 // Safefetch stubs. |
3361 void generate_safefetch(const char* name, int size, address* entry, | |
3362 address* fault_pc, address* continuation_pc) { | |
3363 // safefetch signatures: | |
3364 // int SafeFetch32(int* adr, int errValue); | |
3365 // intptr_t SafeFetchN (intptr_t* adr, intptr_t errValue); | |
3366 // | |
3367 // arguments: | |
3368 // c_rarg0 = adr | |
3369 // c_rarg1 = errValue | |
3370 // | |
3371 // result: | |
3372 // PPC_RET = *adr or errValue | |
3373 | |
3374 StubCodeMark mark(this, "StubRoutines", name); | |
3375 | |
3376 // Entry point, pc or function descriptor. | |
3377 *entry = __ pc(); | |
3378 | |
3379 // Load *adr into c_rarg1, may fault. | |
3380 *fault_pc = __ pc(); | |
3381 switch (size) { | |
3382 case 4: | |
3383 // int32_t | |
3384 __ movl(c_rarg1, Address(c_rarg0, 0)); | |
3385 break; | |
3386 case 8: | |
3387 // int64_t | |
3388 __ movq(c_rarg1, Address(c_rarg0, 0)); | |
3389 break; | |
3390 default: | |
3391 ShouldNotReachHere(); | |
3392 } | |
3393 | |
3394 // return errValue or *adr | |
3395 *continuation_pc = __ pc(); | |
3396 __ movq(rax, c_rarg1); | |
3397 __ ret(0); | |
3398 } | |
6894 | 3399 |
3400 // This is a version of CBC/AES Decrypt which does 4 blocks in a loop at a time | |
3401 // to hide instruction latency | |
3402 // | |
3403 // Arguments: | |
3404 // | |
3405 // Inputs: | |
3406 // c_rarg0 - source byte array address | |
3407 // c_rarg1 - destination byte array address | |
3408 // c_rarg2 - K (key) in little endian int array | |
3409 // c_rarg3 - r vector byte array address | |
3410 // c_rarg4 - input length | |
3411 // | |
3412 | |
3413 address generate_cipherBlockChaining_decryptAESCrypt_Parallel() { | |
7427 | 3414 assert(UseAES, "need AES instructions and misaligned SSE support"); |
6894 | 3415 __ align(CodeEntryAlignment); |
3416 StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_decryptAESCrypt"); | |
3417 address start = __ pc(); | |
3418 | |
3419 Label L_exit, L_key_192_256, L_key_256; | |
3420 Label L_singleBlock_loopTop_128, L_multiBlock_loopTop_128; | |
3421 Label L_singleBlock_loopTop_192, L_singleBlock_loopTop_256; | |
3422 const Register from = c_rarg0; // source array address | |
3423 const Register to = c_rarg1; // destination array address | |
3424 const Register key = c_rarg2; // key array address | |
3425 const Register rvec = c_rarg3; // r byte array initialized from initvector array address | |
3426 // and left with the results of the last encryption block | |
3427 #ifndef _WIN64 | |
3428 const Register len_reg = c_rarg4; // src len (must be multiple of blocksize 16) | |
3429 #else | |
14909 | 3430 const Address len_mem(rsp, 6 * wordSize); // length is on stack on Win64 |
6894 | 3431 const Register len_reg = r10; // pick the first volatile windows register |
3432 #endif | |
3433 const Register pos = rax; | |
3434 | |
3435 // keys 0-10 preloaded into xmm2-xmm12 | |
3436 const int XMM_REG_NUM_KEY_FIRST = 5; | |
3437 const int XMM_REG_NUM_KEY_LAST = 15; | |
7427 | 3438 const XMMRegister xmm_key_first = as_XMMRegister(XMM_REG_NUM_KEY_FIRST); |
6894 | 3439 const XMMRegister xmm_key_last = as_XMMRegister(XMM_REG_NUM_KEY_LAST); |
3440 | |
3441 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
3442 | |
3443 #ifdef _WIN64 | |
3444 // on win64, fill len_reg from stack position | |
3445 __ movl(len_reg, len_mem); | |
3446 // save the xmm registers which must be preserved 6-15 | |
3447 __ subptr(rsp, -rsp_after_call_off * wordSize); | |
3448 for (int i = 6; i <= XMM_REG_NUM_KEY_LAST; i++) { | |
3449 __ movdqu(xmm_save(i), as_XMMRegister(i)); | |
3450 } | |
3451 #endif | |
3452 // the java expanded key ordering is rotated one position from what we want | |
3453 // so we start from 0x10 here and hit 0x00 last | |
3454 const XMMRegister xmm_key_shuf_mask = xmm1; // used temporarily to swap key bytes up front | |
3455 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
3456 // load up xmm regs 5 thru 15 with key 0x10 - 0xa0 - 0x00 | |
7427 | 3457 for (int rnum = XMM_REG_NUM_KEY_FIRST, offset = 0x10; rnum < XMM_REG_NUM_KEY_LAST; rnum++) { |
6894 | 3458 load_key(as_XMMRegister(rnum), key, offset, xmm_key_shuf_mask); |
3459 offset += 0x10; | |
3460 } | |
7427 | 3461 load_key(xmm_key_last, key, 0x00, xmm_key_shuf_mask); |
6894 | 3462 |
3463 const XMMRegister xmm_prev_block_cipher = xmm1; // holds cipher of previous block | |
7427 | 3464 |
6894 | 3465 // registers holding the four results in the parallelized loop |
3466 const XMMRegister xmm_result0 = xmm0; | |
3467 const XMMRegister xmm_result1 = xmm2; | |
3468 const XMMRegister xmm_result2 = xmm3; | |
3469 const XMMRegister xmm_result3 = xmm4; | |
3470 | |
3471 __ movdqu(xmm_prev_block_cipher, Address(rvec, 0x00)); // initialize with initial rvec | |
3472 | |
3473 // now split to different paths depending on the keylen (len in ints of AESCrypt.KLE array (52=192, or 60=256)) | |
3474 __ movl(rax, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); | |
3475 __ cmpl(rax, 44); | |
3476 __ jcc(Assembler::notEqual, L_key_192_256); | |
3477 | |
3478 | |
3479 // 128-bit code follows here, parallelized | |
3480 __ movptr(pos, 0); | |
3481 __ align(OptoLoopAlignment); | |
3482 __ BIND(L_multiBlock_loopTop_128); | |
3483 __ cmpptr(len_reg, 4*AESBlockSize); // see if at least 4 blocks left | |
3484 __ jcc(Assembler::less, L_singleBlock_loopTop_128); | |
3485 | |
3486 __ movdqu(xmm_result0, Address(from, pos, Address::times_1, 0*AESBlockSize)); // get next 4 blocks into xmmresult registers | |
3487 __ movdqu(xmm_result1, Address(from, pos, Address::times_1, 1*AESBlockSize)); | |
3488 __ movdqu(xmm_result2, Address(from, pos, Address::times_1, 2*AESBlockSize)); | |
3489 __ movdqu(xmm_result3, Address(from, pos, Address::times_1, 3*AESBlockSize)); | |
3490 | |
3491 #define DoFour(opc, src_reg) \ | |
3492 __ opc(xmm_result0, src_reg); \ | |
3493 __ opc(xmm_result1, src_reg); \ | |
3494 __ opc(xmm_result2, src_reg); \ | |
3495 __ opc(xmm_result3, src_reg); | |
3496 | |
3497 DoFour(pxor, xmm_key_first); | |
3498 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST - 1; rnum++) { | |
3499 DoFour(aesdec, as_XMMRegister(rnum)); | |
3500 } | |
3501 DoFour(aesdeclast, xmm_key_last); | |
3502 // for each result, xor with the r vector of previous cipher block | |
3503 __ pxor(xmm_result0, xmm_prev_block_cipher); | |
3504 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 0*AESBlockSize)); | |
3505 __ pxor(xmm_result1, xmm_prev_block_cipher); | |
3506 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 1*AESBlockSize)); | |
3507 __ pxor(xmm_result2, xmm_prev_block_cipher); | |
3508 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 2*AESBlockSize)); | |
3509 __ pxor(xmm_result3, xmm_prev_block_cipher); | |
3510 __ movdqu(xmm_prev_block_cipher, Address(from, pos, Address::times_1, 3*AESBlockSize)); // this will carry over to next set of blocks | |
3511 | |
3512 __ movdqu(Address(to, pos, Address::times_1, 0*AESBlockSize), xmm_result0); // store 4 results into the next 64 bytes of output | |
3513 __ movdqu(Address(to, pos, Address::times_1, 1*AESBlockSize), xmm_result1); | |
3514 __ movdqu(Address(to, pos, Address::times_1, 2*AESBlockSize), xmm_result2); | |
3515 __ movdqu(Address(to, pos, Address::times_1, 3*AESBlockSize), xmm_result3); | |
3516 | |
3517 __ addptr(pos, 4*AESBlockSize); | |
3518 __ subptr(len_reg, 4*AESBlockSize); | |
3519 __ jmp(L_multiBlock_loopTop_128); | |
3520 | |
3521 // registers used in the non-parallelized loops | |
7427 | 3522 // xmm register assignments for the loops below |
3523 const XMMRegister xmm_result = xmm0; | |
6894 | 3524 const XMMRegister xmm_prev_block_cipher_save = xmm2; |
7427 | 3525 const XMMRegister xmm_key11 = xmm3; |
3526 const XMMRegister xmm_key12 = xmm4; | |
3527 const XMMRegister xmm_temp = xmm4; | |
6894 | 3528 |
3529 __ align(OptoLoopAlignment); | |
3530 __ BIND(L_singleBlock_loopTop_128); | |
3531 __ cmpptr(len_reg, 0); // any blocks left?? | |
3532 __ jcc(Assembler::equal, L_exit); | |
3533 __ movdqu(xmm_result, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of cipher input | |
3534 __ movdqa(xmm_prev_block_cipher_save, xmm_result); // save for next r vector | |
3535 __ pxor (xmm_result, xmm_key_first); // do the aes dec rounds | |
3536 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST - 1; rnum++) { | |
3537 __ aesdec(xmm_result, as_XMMRegister(rnum)); | |
3538 } | |
3539 __ aesdeclast(xmm_result, xmm_key_last); | |
3540 __ pxor (xmm_result, xmm_prev_block_cipher); // xor with the current r vector | |
3541 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
3542 // no need to store r to memory until we exit | |
3543 __ movdqa(xmm_prev_block_cipher, xmm_prev_block_cipher_save); // set up next r vector with cipher input from this block | |
3544 | |
3545 __ addptr(pos, AESBlockSize); | |
3546 __ subptr(len_reg, AESBlockSize); | |
3547 __ jmp(L_singleBlock_loopTop_128); | |
3548 | |
3549 | |
3550 __ BIND(L_exit); | |
3551 __ movdqu(Address(rvec, 0), xmm_prev_block_cipher); // final value of r stored in rvec of CipherBlockChaining object | |
3552 #ifdef _WIN64 | |
3553 // restore regs belonging to calling function | |
3554 for (int i = 6; i <= XMM_REG_NUM_KEY_LAST; i++) { | |
3555 __ movdqu(as_XMMRegister(i), xmm_save(i)); | |
3556 } | |
3557 #endif | |
14909 | 3558 __ movl(rax, 0); // return 0 (why?) |
6894 | 3559 __ leave(); // required for proper stackwalking of RuntimeStub frame |
3560 __ ret(0); | |
3561 | |
3562 | |
3563 __ BIND(L_key_192_256); | |
3564 // here rax = len in ints of AESCrypt.KLE array (52=192, or 60=256) | |
7427 | 3565 load_key(xmm_key11, key, 0xb0); |
6894 | 3566 __ cmpl(rax, 52); |
3567 __ jcc(Assembler::notEqual, L_key_256); | |
3568 | |
3569 // 192-bit code follows here (could be optimized to use parallelism) | |
7427 | 3570 load_key(xmm_key12, key, 0xc0); // 192-bit key goes up to c0 |
6894 | 3571 __ movptr(pos, 0); |
3572 __ align(OptoLoopAlignment); | |
7427 | 3573 |
6894 | 3574 __ BIND(L_singleBlock_loopTop_192); |
3575 __ movdqu(xmm_result, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of cipher input | |
3576 __ movdqa(xmm_prev_block_cipher_save, xmm_result); // save for next r vector | |
3577 __ pxor (xmm_result, xmm_key_first); // do the aes dec rounds | |
3578 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST - 1; rnum++) { | |
3579 __ aesdec(xmm_result, as_XMMRegister(rnum)); | |
3580 } | |
7427 | 3581 __ aesdec(xmm_result, xmm_key11); |
3582 __ aesdec(xmm_result, xmm_key12); | |
6894 | 3583 __ aesdeclast(xmm_result, xmm_key_last); // xmm15 always came from key+0 |
3584 __ pxor (xmm_result, xmm_prev_block_cipher); // xor with the current r vector | |
7427 | 3585 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output |
6894 | 3586 // no need to store r to memory until we exit |
7427 | 3587 __ movdqa(xmm_prev_block_cipher, xmm_prev_block_cipher_save); // set up next r vector with cipher input from this block |
6894 | 3588 __ addptr(pos, AESBlockSize); |
3589 __ subptr(len_reg, AESBlockSize); | |
3590 __ jcc(Assembler::notEqual,L_singleBlock_loopTop_192); | |
3591 __ jmp(L_exit); | |
3592 | |
3593 __ BIND(L_key_256); | |
3594 // 256-bit code follows here (could be optimized to use parallelism) | |
3595 __ movptr(pos, 0); | |
3596 __ align(OptoLoopAlignment); | |
7427 | 3597 |
6894 | 3598 __ BIND(L_singleBlock_loopTop_256); |
7427 | 3599 __ movdqu(xmm_result, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of cipher input |
6894 | 3600 __ movdqa(xmm_prev_block_cipher_save, xmm_result); // save for next r vector |
3601 __ pxor (xmm_result, xmm_key_first); // do the aes dec rounds | |
3602 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST - 1; rnum++) { | |
3603 __ aesdec(xmm_result, as_XMMRegister(rnum)); | |
3604 } | |
7427 | 3605 __ aesdec(xmm_result, xmm_key11); |
3606 load_key(xmm_temp, key, 0xc0); | |
3607 __ aesdec(xmm_result, xmm_temp); | |
3608 load_key(xmm_temp, key, 0xd0); | |
3609 __ aesdec(xmm_result, xmm_temp); | |
3610 load_key(xmm_temp, key, 0xe0); // 256-bit key goes up to e0 | |
3611 __ aesdec(xmm_result, xmm_temp); | |
3612 __ aesdeclast(xmm_result, xmm_key_last); // xmm15 came from key+0 | |
6894 | 3613 __ pxor (xmm_result, xmm_prev_block_cipher); // xor with the current r vector |
7427 | 3614 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output |
6894 | 3615 // no need to store r to memory until we exit |
7427 | 3616 __ movdqa(xmm_prev_block_cipher, xmm_prev_block_cipher_save); // set up next r vector with cipher input from this block |
6894 | 3617 __ addptr(pos, AESBlockSize); |
3618 __ subptr(len_reg, AESBlockSize); | |
3619 __ jcc(Assembler::notEqual,L_singleBlock_loopTop_256); | |
3620 __ jmp(L_exit); | |
3621 | |
3622 return start; | |
3623 } | |
3624 | |
11080
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3625 /** |
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3626 * Arguments: |
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3627 * |
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3628 * Inputs: |
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3629 * c_rarg0 - int crc |
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3630 * c_rarg1 - byte* buf |
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3631 * c_rarg2 - int length |
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3632 * |
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3633 * Ouput: |
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3634 * rax - int crc result |
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3635 */ |
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3636 address generate_updateBytesCRC32() { |
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3637 assert(UseCRC32Intrinsics, "need AVX and CLMUL instructions"); |
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3638 |
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3639 __ align(CodeEntryAlignment); |
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3640 StubCodeMark mark(this, "StubRoutines", "updateBytesCRC32"); |
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3641 |
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3642 address start = __ pc(); |
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3643 // Win64: rcx, rdx, r8, r9 (c_rarg0, c_rarg1, ...) |
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3644 // Unix: rdi, rsi, rdx, rcx, r8, r9 (c_rarg0, c_rarg1, ...) |
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3645 // rscratch1: r10 |
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3646 const Register crc = c_rarg0; // crc |
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3647 const Register buf = c_rarg1; // source java byte array address |
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3648 const Register len = c_rarg2; // length |
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3649 const Register table = c_rarg3; // crc_table address (reuse register) |
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3650 const Register tmp = r11; |
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3651 assert_different_registers(crc, buf, len, table, tmp, rax); |
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3652 |
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3653 BLOCK_COMMENT("Entry:"); |
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3654 __ enter(); // required for proper stackwalking of RuntimeStub frame |
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3655 |
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3656 __ kernel_crc32(crc, buf, len, table, tmp); |
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3657 |
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3658 __ movl(rax, crc); |
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3659 __ leave(); // required for proper stackwalking of RuntimeStub frame |
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3660 __ ret(0); |
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3661 |
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3662 return start; |
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3663 } |
6894 | 3664 |
0 | 3665 #undef __ |
3666 #define __ masm-> | |
3667 | |
3668 // Continuation point for throwing of implicit exceptions that are | |
3669 // not handled in the current activation. Fabricates an exception | |
3670 // oop and initiates normal exception dispatching in this | |
3671 // frame. Since we need to preserve callee-saved values (currently | |
3672 // only for C2, but done for C1 as well) we need a callee-saved oop | |
3673 // map and therefore have to make these stubs into RuntimeStubs | |
3674 // rather than BufferBlobs. If the compiler needs all registers to | |
3675 // be preserved between the fault point and the exception handler | |
3676 // then it must assume responsibility for that in | |
3677 // AbstractCompiler::continuation_for_implicit_null_exception or | |
3678 // continuation_for_implicit_division_by_zero_exception. All other | |
3679 // implicit exceptions (e.g., NullPointerException or | |
3680 // AbstractMethodError on entry) are either at call sites or | |
3681 // otherwise assume that stack unwinding will be initiated, so | |
3682 // caller saved registers were assumed volatile in the compiler. | |
3683 address generate_throw_exception(const char* name, | |
3684 address runtime_entry, | |
3451
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3685 Register arg1 = noreg, |
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3686 Register arg2 = noreg) { |
0 | 3687 // Information about frame layout at time of blocking runtime call. |
3688 // Note that we only have to preserve callee-saved registers since | |
3689 // the compilers are responsible for supplying a continuation point | |
3690 // if they expect all registers to be preserved. | |
3691 enum layout { | |
3692 rbp_off = frame::arg_reg_save_area_bytes/BytesPerInt, | |
3693 rbp_off2, | |
3694 return_off, | |
3695 return_off2, | |
3696 framesize // inclusive of return address | |
3697 }; | |
3698 | |
3699 int insts_size = 512; | |
3700 int locs_size = 64; | |
3701 | |
3702 CodeBuffer code(name, insts_size, locs_size); | |
3703 OopMapSet* oop_maps = new OopMapSet(); | |
3704 MacroAssembler* masm = new MacroAssembler(&code); | |
3705 | |
3706 address start = __ pc(); | |
3707 | |
3708 // This is an inlined and slightly modified version of call_VM | |
3709 // which has the ability to fetch the return PC out of | |
3710 // thread-local storage and also sets up last_Java_sp slightly | |
3711 // differently than the real call_VM | |
3712 | |
3713 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
3714 | |
3715 assert(is_even(framesize/2), "sp not 16-byte aligned"); | |
3716 | |
3717 // return address and rbp are already in place | |
304 | 3718 __ subptr(rsp, (framesize-4) << LogBytesPerInt); // prolog |
0 | 3719 |
3720 int frame_complete = __ pc() - start; | |
3721 | |
3722 // Set up last_Java_sp and last_Java_fp | |
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3723 address the_pc = __ pc(); |
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3724 __ set_last_Java_frame(rsp, rbp, the_pc); |
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3725 __ andptr(rsp, -(StackAlignmentInBytes)); // Align stack |
0 | 3726 |
3727 // Call runtime | |
3451
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3728 if (arg1 != noreg) { |
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3729 assert(arg2 != c_rarg1, "clobbered"); |
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3730 __ movptr(c_rarg1, arg1); |
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3731 } |
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3732 if (arg2 != noreg) { |
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3733 __ movptr(c_rarg2, arg2); |
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3734 } |
304 | 3735 __ movptr(c_rarg0, r15_thread); |
0 | 3736 BLOCK_COMMENT("call runtime_entry"); |
3737 __ call(RuntimeAddress(runtime_entry)); | |
3738 | |
3739 // Generate oop map | |
3740 OopMap* map = new OopMap(framesize, 0); | |
3741 | |
4941
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3742 oop_maps->add_gc_map(the_pc - start, map); |
0 | 3743 |
4895
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3744 __ reset_last_Java_frame(true, true); |
0 | 3745 |
3746 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
3747 | |
3748 // check for pending exceptions | |
3749 #ifdef ASSERT | |
3750 Label L; | |
304 | 3751 __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), |
3752 (int32_t) NULL_WORD); | |
0 | 3753 __ jcc(Assembler::notEqual, L); |
3754 __ should_not_reach_here(); | |
3755 __ bind(L); | |
3756 #endif // ASSERT | |
3757 __ jump(RuntimeAddress(StubRoutines::forward_exception_entry())); | |
3758 | |
3759 | |
3760 // codeBlob framesize is in words (not VMRegImpl::slot_size) | |
3761 RuntimeStub* stub = | |
3762 RuntimeStub::new_runtime_stub(name, | |
3763 &code, | |
3764 frame_complete, | |
3765 (framesize >> (LogBytesPerWord - LogBytesPerInt)), | |
3766 oop_maps, false); | |
3767 return stub->entry_point(); | |
3768 } | |
3769 | |
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3770 void create_control_words() { |
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3771 // Round to nearest, 53-bit mode, exceptions masked |
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3772 StubRoutines::_fpu_cntrl_wrd_std = 0x027F; |
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3773 // Round to zero, 53-bit mode, exception mased |
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3774 StubRoutines::_fpu_cntrl_wrd_trunc = 0x0D7F; |
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3775 // Round to nearest, 24-bit mode, exceptions masked |
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3776 StubRoutines::_fpu_cntrl_wrd_24 = 0x007F; |
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3777 // Round to nearest, 64-bit mode, exceptions masked |
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3778 StubRoutines::_fpu_cntrl_wrd_64 = 0x037F; |
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3779 // Round to nearest, 64-bit mode, exceptions masked |
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3780 StubRoutines::_mxcsr_std = 0x1F80; |
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3781 // Note: the following two constants are 80-bit values |
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3782 // layout is critical for correct loading by FPU. |
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3783 // Bias for strict fp multiply/divide |
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3784 StubRoutines::_fpu_subnormal_bias1[0]= 0x00000000; // 2^(-15360) == 0x03ff 8000 0000 0000 0000 |
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3785 StubRoutines::_fpu_subnormal_bias1[1]= 0x80000000; |
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3786 StubRoutines::_fpu_subnormal_bias1[2]= 0x03ff; |
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3787 // Un-Bias for strict fp multiply/divide |
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3788 StubRoutines::_fpu_subnormal_bias2[0]= 0x00000000; // 2^(+15360) == 0x7bff 8000 0000 0000 0000 |
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3789 StubRoutines::_fpu_subnormal_bias2[1]= 0x80000000; |
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3790 StubRoutines::_fpu_subnormal_bias2[2]= 0x7bff; |
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3791 } |
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3792 |
0 | 3793 // Initialization |
3794 void generate_initial() { | |
3795 // Generates all stubs and initializes the entry points | |
3796 | |
11166
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3797 // This platform-specific settings are needed by generate_call_stub() |
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3798 create_control_words(); |
0 | 3799 |
3800 // entry points that exist in all platforms Note: This is code | |
3801 // that could be shared among different platforms - however the | |
3802 // benefit seems to be smaller than the disadvantage of having a | |
3803 // much more complicated generator structure. See also comment in | |
3804 // stubRoutines.hpp. | |
3805 | |
3806 StubRoutines::_forward_exception_entry = generate_forward_exception(); | |
3807 | |
3808 StubRoutines::_call_stub_entry = | |
3809 generate_call_stub(StubRoutines::_call_stub_return_address); | |
3810 | |
3811 // is referenced by megamorphic call | |
3812 StubRoutines::_catch_exception_entry = generate_catch_exception(); | |
3813 | |
3814 // atomic calls | |
3815 StubRoutines::_atomic_xchg_entry = generate_atomic_xchg(); | |
3816 StubRoutines::_atomic_xchg_ptr_entry = generate_atomic_xchg_ptr(); | |
3817 StubRoutines::_atomic_cmpxchg_entry = generate_atomic_cmpxchg(); | |
3818 StubRoutines::_atomic_cmpxchg_long_entry = generate_atomic_cmpxchg_long(); | |
3819 StubRoutines::_atomic_add_entry = generate_atomic_add(); | |
3820 StubRoutines::_atomic_add_ptr_entry = generate_atomic_add_ptr(); | |
3821 StubRoutines::_fence_entry = generate_orderaccess_fence(); | |
3822 | |
3823 StubRoutines::_handler_for_unsafe_access_entry = | |
3824 generate_handler_for_unsafe_access(); | |
3825 | |
3826 // platform dependent | |
304 | 3827 StubRoutines::x86::_get_previous_fp_entry = generate_get_previous_fp(); |
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3828 StubRoutines::x86::_get_previous_sp_entry = generate_get_previous_sp(); |
304 | 3829 |
3830 StubRoutines::x86::_verify_mxcsr_entry = generate_verify_mxcsr(); | |
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3831 |
4743 | 3832 // Build this early so it's available for the interpreter. |
3833 StubRoutines::_throw_StackOverflowError_entry = | |
3834 generate_throw_exception("StackOverflowError throw_exception", | |
3835 CAST_FROM_FN_PTR(address, | |
3836 SharedRuntime:: | |
3837 throw_StackOverflowError)); | |
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3838 if (UseCRC32Intrinsics) { |
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3839 // set table address before stub generation which use it |
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3840 StubRoutines::_crc_table_adr = (address)StubRoutines::x86::_crc_table; |
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3841 StubRoutines::_updateBytesCRC32 = generate_updateBytesCRC32(); |
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3842 } |
0 | 3843 } |
3844 | |
3845 void generate_all() { | |
3846 // Generates all stubs and initializes the entry points | |
3847 | |
3848 // These entry points require SharedInfo::stack0 to be set up in | |
3849 // non-core builds and need to be relocatable, so they each | |
3850 // fabricate a RuntimeStub internally. | |
3851 StubRoutines::_throw_AbstractMethodError_entry = | |
3852 generate_throw_exception("AbstractMethodError throw_exception", | |
3853 CAST_FROM_FN_PTR(address, | |
3854 SharedRuntime:: | |
3937 | 3855 throw_AbstractMethodError)); |
0 | 3856 |
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3857 StubRoutines::_throw_IncompatibleClassChangeError_entry = |
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3858 generate_throw_exception("IncompatibleClassChangeError throw_exception", |
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3859 CAST_FROM_FN_PTR(address, |
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3860 SharedRuntime:: |
3937 | 3861 throw_IncompatibleClassChangeError)); |
0 | 3862 |
3863 StubRoutines::_throw_NullPointerException_at_call_entry = | |
3864 generate_throw_exception("NullPointerException at call throw_exception", | |
3865 CAST_FROM_FN_PTR(address, | |
3866 SharedRuntime:: | |
3937 | 3867 throw_NullPointerException_at_call)); |
0 | 3868 |
3869 // entry points that are platform specific | |
304 | 3870 StubRoutines::x86::_f2i_fixup = generate_f2i_fixup(); |
3871 StubRoutines::x86::_f2l_fixup = generate_f2l_fixup(); | |
3872 StubRoutines::x86::_d2i_fixup = generate_d2i_fixup(); | |
3873 StubRoutines::x86::_d2l_fixup = generate_d2l_fixup(); | |
3874 | |
3875 StubRoutines::x86::_float_sign_mask = generate_fp_mask("float_sign_mask", 0x7FFFFFFF7FFFFFFF); | |
3876 StubRoutines::x86::_float_sign_flip = generate_fp_mask("float_sign_flip", 0x8000000080000000); | |
3877 StubRoutines::x86::_double_sign_mask = generate_fp_mask("double_sign_mask", 0x7FFFFFFFFFFFFFFF); | |
3878 StubRoutines::x86::_double_sign_flip = generate_fp_mask("double_sign_flip", 0x8000000000000000); | |
0 | 3879 |
3880 // support for verify_oop (must happen after universe_init) | |
3881 StubRoutines::_verify_oop_subroutine_entry = generate_verify_oop(); | |
3882 | |
3883 // arraycopy stubs used by compilers | |
3884 generate_arraycopy_stubs(); | |
1108 | 3885 |
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3886 generate_math_stubs(); |
6894 | 3887 |
3888 // don't bother generating these AES intrinsic stubs unless global flag is set | |
3889 if (UseAESIntrinsics) { | |
3890 StubRoutines::x86::_key_shuffle_mask_addr = generate_key_shuffle_mask(); // needed by the others | |
3891 | |
3892 StubRoutines::_aescrypt_encryptBlock = generate_aescrypt_encryptBlock(); | |
3893 StubRoutines::_aescrypt_decryptBlock = generate_aescrypt_decryptBlock(); | |
3894 StubRoutines::_cipherBlockChaining_encryptAESCrypt = generate_cipherBlockChaining_encryptAESCrypt(); | |
3895 StubRoutines::_cipherBlockChaining_decryptAESCrypt = generate_cipherBlockChaining_decryptAESCrypt_Parallel(); | |
3896 } | |
11127 | 3897 |
3898 // Safefetch stubs. | |
3899 generate_safefetch("SafeFetch32", sizeof(int), &StubRoutines::_safefetch32_entry, | |
3900 &StubRoutines::_safefetch32_fault_pc, | |
3901 &StubRoutines::_safefetch32_continuation_pc); | |
3902 generate_safefetch("SafeFetchN", sizeof(intptr_t), &StubRoutines::_safefetchN_entry, | |
3903 &StubRoutines::_safefetchN_fault_pc, | |
3904 &StubRoutines::_safefetchN_continuation_pc); | |
0 | 3905 } |
3906 | |
3907 public: | |
3908 StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) { | |
3909 if (all) { | |
3910 generate_all(); | |
3911 } else { | |
3912 generate_initial(); | |
3913 } | |
3914 } | |
3915 }; // end class declaration | |
3916 | |
3917 void StubGenerator_generate(CodeBuffer* code, bool all) { | |
3918 StubGenerator g(code, all); | |
3919 } |