Mercurial > hg > truffle
annotate src/cpu/x86/vm/stubGenerator_x86_32.cpp @ 12711:fb4658e16b5d
Truffle: some regression fixes to previous cleanup
author | Christian Humer <christian.humer@gmail.com> |
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date | Thu, 07 Nov 2013 20:47:11 +0100 |
parents | 58fc8e2b7b6d |
children | d8041d695d19 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
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26 #include "asm/macroAssembler.hpp" |
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27 #include "asm/macroAssembler.inline.hpp" |
1972 | 28 #include "interpreter/interpreter.hpp" |
29 #include "nativeInst_x86.hpp" | |
30 #include "oops/instanceOop.hpp" | |
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31 #include "oops/method.hpp" |
1972 | 32 #include "oops/objArrayKlass.hpp" |
33 #include "oops/oop.inline.hpp" | |
34 #include "prims/methodHandles.hpp" | |
35 #include "runtime/frame.inline.hpp" | |
36 #include "runtime/handles.inline.hpp" | |
37 #include "runtime/sharedRuntime.hpp" | |
38 #include "runtime/stubCodeGenerator.hpp" | |
39 #include "runtime/stubRoutines.hpp" | |
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40 #include "runtime/thread.inline.hpp" |
1972 | 41 #include "utilities/top.hpp" |
42 #ifdef COMPILER2 | |
43 #include "opto/runtime.hpp" | |
44 #endif | |
0 | 45 |
46 // Declaration and definition of StubGenerator (no .hpp file). | |
47 // For a more detailed description of the stub routine structure | |
48 // see the comment in stubRoutines.hpp | |
49 | |
50 #define __ _masm-> | |
304 | 51 #define a__ ((Assembler*)_masm)-> |
0 | 52 |
53 #ifdef PRODUCT | |
54 #define BLOCK_COMMENT(str) /* nothing */ | |
55 #else | |
56 #define BLOCK_COMMENT(str) __ block_comment(str) | |
57 #endif | |
58 | |
59 #define BIND(label) bind(label); BLOCK_COMMENT(#label ":") | |
60 | |
61 const int MXCSR_MASK = 0xFFC0; // Mask out any pending exceptions | |
62 const int FPU_CNTRL_WRD_MASK = 0xFFFF; | |
63 | |
64 // ------------------------------------------------------------------------------------------------------------------------- | |
65 // Stub Code definitions | |
66 | |
67 static address handle_unsafe_access() { | |
68 JavaThread* thread = JavaThread::current(); | |
69 address pc = thread->saved_exception_pc(); | |
70 // pc is the instruction which we must emulate | |
71 // doing a no-op is fine: return garbage from the load | |
72 // therefore, compute npc | |
73 address npc = Assembler::locate_next_instruction(pc); | |
74 | |
75 // request an async exception | |
76 thread->set_pending_unsafe_access_error(); | |
77 | |
78 // return address of next instruction to execute | |
79 return npc; | |
80 } | |
81 | |
82 class StubGenerator: public StubCodeGenerator { | |
83 private: | |
84 | |
85 #ifdef PRODUCT | |
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86 #define inc_counter_np(counter) ((void)0) |
0 | 87 #else |
88 void inc_counter_np_(int& counter) { | |
304 | 89 __ incrementl(ExternalAddress((address)&counter)); |
0 | 90 } |
91 #define inc_counter_np(counter) \ | |
92 BLOCK_COMMENT("inc_counter " #counter); \ | |
93 inc_counter_np_(counter); | |
94 #endif //PRODUCT | |
95 | |
96 void inc_copy_counter_np(BasicType t) { | |
97 #ifndef PRODUCT | |
98 switch (t) { | |
99 case T_BYTE: inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); return; | |
100 case T_SHORT: inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); return; | |
101 case T_INT: inc_counter_np(SharedRuntime::_jint_array_copy_ctr); return; | |
102 case T_LONG: inc_counter_np(SharedRuntime::_jlong_array_copy_ctr); return; | |
103 case T_OBJECT: inc_counter_np(SharedRuntime::_oop_array_copy_ctr); return; | |
104 } | |
105 ShouldNotReachHere(); | |
106 #endif //PRODUCT | |
107 } | |
108 | |
109 //------------------------------------------------------------------------------------------------------------------------ | |
110 // Call stubs are used to call Java from C | |
111 // | |
112 // [ return_from_Java ] <--- rsp | |
113 // [ argument word n ] | |
114 // ... | |
115 // -N [ argument word 1 ] | |
116 // -7 [ Possible padding for stack alignment ] | |
117 // -6 [ Possible padding for stack alignment ] | |
118 // -5 [ Possible padding for stack alignment ] | |
119 // -4 [ mxcsr save ] <--- rsp_after_call | |
120 // -3 [ saved rbx, ] | |
121 // -2 [ saved rsi ] | |
122 // -1 [ saved rdi ] | |
123 // 0 [ saved rbp, ] <--- rbp, | |
124 // 1 [ return address ] | |
125 // 2 [ ptr. to call wrapper ] | |
126 // 3 [ result ] | |
127 // 4 [ result_type ] | |
128 // 5 [ method ] | |
129 // 6 [ entry_point ] | |
130 // 7 [ parameters ] | |
131 // 8 [ parameter_size ] | |
132 // 9 [ thread ] | |
133 | |
134 | |
135 address generate_call_stub(address& return_address) { | |
136 StubCodeMark mark(this, "StubRoutines", "call_stub"); | |
137 address start = __ pc(); | |
138 | |
139 // stub code parameters / addresses | |
140 assert(frame::entry_frame_call_wrapper_offset == 2, "adjust this code"); | |
141 bool sse_save = false; | |
142 const Address rsp_after_call(rbp, -4 * wordSize); // same as in generate_catch_exception()! | |
143 const int locals_count_in_bytes (4*wordSize); | |
144 const Address mxcsr_save (rbp, -4 * wordSize); | |
145 const Address saved_rbx (rbp, -3 * wordSize); | |
146 const Address saved_rsi (rbp, -2 * wordSize); | |
147 const Address saved_rdi (rbp, -1 * wordSize); | |
148 const Address result (rbp, 3 * wordSize); | |
149 const Address result_type (rbp, 4 * wordSize); | |
150 const Address method (rbp, 5 * wordSize); | |
151 const Address entry_point (rbp, 6 * wordSize); | |
152 const Address parameters (rbp, 7 * wordSize); | |
153 const Address parameter_size(rbp, 8 * wordSize); | |
154 const Address thread (rbp, 9 * wordSize); // same as in generate_catch_exception()! | |
155 sse_save = UseSSE > 0; | |
156 | |
157 // stub code | |
158 __ enter(); | |
304 | 159 __ movptr(rcx, parameter_size); // parameter counter |
1506 | 160 __ shlptr(rcx, Interpreter::logStackElementSize); // convert parameter count to bytes |
304 | 161 __ addptr(rcx, locals_count_in_bytes); // reserve space for register saves |
162 __ subptr(rsp, rcx); | |
163 __ andptr(rsp, -(StackAlignmentInBytes)); // Align stack | |
0 | 164 |
165 // save rdi, rsi, & rbx, according to C calling conventions | |
304 | 166 __ movptr(saved_rdi, rdi); |
167 __ movptr(saved_rsi, rsi); | |
168 __ movptr(saved_rbx, rbx); | |
0 | 169 // save and initialize %mxcsr |
170 if (sse_save) { | |
171 Label skip_ldmx; | |
172 __ stmxcsr(mxcsr_save); | |
173 __ movl(rax, mxcsr_save); | |
174 __ andl(rax, MXCSR_MASK); // Only check control and mask bits | |
175 ExternalAddress mxcsr_std(StubRoutines::addr_mxcsr_std()); | |
176 __ cmp32(rax, mxcsr_std); | |
177 __ jcc(Assembler::equal, skip_ldmx); | |
178 __ ldmxcsr(mxcsr_std); | |
179 __ bind(skip_ldmx); | |
180 } | |
181 | |
182 // make sure the control word is correct. | |
183 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); | |
184 | |
185 #ifdef ASSERT | |
186 // make sure we have no pending exceptions | |
187 { Label L; | |
304 | 188 __ movptr(rcx, thread); |
189 __ cmpptr(Address(rcx, Thread::pending_exception_offset()), (int32_t)NULL_WORD); | |
0 | 190 __ jcc(Assembler::equal, L); |
191 __ stop("StubRoutines::call_stub: entered with pending exception"); | |
192 __ bind(L); | |
193 } | |
194 #endif | |
195 | |
196 // pass parameters if any | |
197 BLOCK_COMMENT("pass parameters if any"); | |
198 Label parameters_done; | |
199 __ movl(rcx, parameter_size); // parameter counter | |
200 __ testl(rcx, rcx); | |
201 __ jcc(Assembler::zero, parameters_done); | |
202 | |
203 // parameter passing loop | |
204 | |
205 Label loop; | |
206 // Copy Java parameters in reverse order (receiver last) | |
207 // Note that the argument order is inverted in the process | |
208 // source is rdx[rcx: N-1..0] | |
209 // dest is rsp[rbx: 0..N-1] | |
210 | |
304 | 211 __ movptr(rdx, parameters); // parameter pointer |
212 __ xorptr(rbx, rbx); | |
0 | 213 |
214 __ BIND(loop); | |
215 | |
216 // get parameter | |
304 | 217 __ movptr(rax, Address(rdx, rcx, Interpreter::stackElementScale(), -wordSize)); |
218 __ movptr(Address(rsp, rbx, Interpreter::stackElementScale(), | |
0 | 219 Interpreter::expr_offset_in_bytes(0)), rax); // store parameter |
220 __ increment(rbx); | |
221 __ decrement(rcx); | |
222 __ jcc(Assembler::notZero, loop); | |
223 | |
224 // call Java function | |
225 __ BIND(parameters_done); | |
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226 __ movptr(rbx, method); // get Method* |
304 | 227 __ movptr(rax, entry_point); // get entry_point |
228 __ mov(rsi, rsp); // set sender sp | |
0 | 229 BLOCK_COMMENT("call Java function"); |
230 __ call(rax); | |
231 | |
232 BLOCK_COMMENT("call_stub_return_address:"); | |
233 return_address = __ pc(); | |
234 | |
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235 #ifdef COMPILER2 |
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236 { |
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237 Label L_skip; |
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238 if (UseSSE >= 2) { |
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239 __ verify_FPU(0, "call_stub_return"); |
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240 } else { |
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241 for (int i = 1; i < 8; i++) { |
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242 __ ffree(i); |
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243 } |
0 | 244 |
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245 // UseSSE <= 1 so double result should be left on TOS |
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246 __ movl(rsi, result_type); |
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247 __ cmpl(rsi, T_DOUBLE); |
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248 __ jcc(Assembler::equal, L_skip); |
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249 if (UseSSE == 0) { |
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250 // UseSSE == 0 so float result should be left on TOS |
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251 __ cmpl(rsi, T_FLOAT); |
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252 __ jcc(Assembler::equal, L_skip); |
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253 } |
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254 __ ffree(0); |
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255 } |
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256 __ BIND(L_skip); |
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257 } |
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258 #endif // COMPILER2 |
0 | 259 |
260 // store result depending on type | |
261 // (everything that is not T_LONG, T_FLOAT or T_DOUBLE is treated as T_INT) | |
304 | 262 __ movptr(rdi, result); |
0 | 263 Label is_long, is_float, is_double, exit; |
264 __ movl(rsi, result_type); | |
265 __ cmpl(rsi, T_LONG); | |
266 __ jcc(Assembler::equal, is_long); | |
267 __ cmpl(rsi, T_FLOAT); | |
268 __ jcc(Assembler::equal, is_float); | |
269 __ cmpl(rsi, T_DOUBLE); | |
270 __ jcc(Assembler::equal, is_double); | |
271 | |
272 // handle T_INT case | |
273 __ movl(Address(rdi, 0), rax); | |
274 __ BIND(exit); | |
275 | |
276 // check that FPU stack is empty | |
277 __ verify_FPU(0, "generate_call_stub"); | |
278 | |
279 // pop parameters | |
304 | 280 __ lea(rsp, rsp_after_call); |
0 | 281 |
282 // restore %mxcsr | |
283 if (sse_save) { | |
284 __ ldmxcsr(mxcsr_save); | |
285 } | |
286 | |
287 // restore rdi, rsi and rbx, | |
304 | 288 __ movptr(rbx, saved_rbx); |
289 __ movptr(rsi, saved_rsi); | |
290 __ movptr(rdi, saved_rdi); | |
291 __ addptr(rsp, 4*wordSize); | |
0 | 292 |
293 // return | |
304 | 294 __ pop(rbp); |
0 | 295 __ ret(0); |
296 | |
297 // handle return types different from T_INT | |
298 __ BIND(is_long); | |
299 __ movl(Address(rdi, 0 * wordSize), rax); | |
300 __ movl(Address(rdi, 1 * wordSize), rdx); | |
301 __ jmp(exit); | |
302 | |
303 __ BIND(is_float); | |
304 // interpreter uses xmm0 for return values | |
305 if (UseSSE >= 1) { | |
306 __ movflt(Address(rdi, 0), xmm0); | |
307 } else { | |
308 __ fstp_s(Address(rdi, 0)); | |
309 } | |
310 __ jmp(exit); | |
311 | |
312 __ BIND(is_double); | |
313 // interpreter uses xmm0 for return values | |
314 if (UseSSE >= 2) { | |
315 __ movdbl(Address(rdi, 0), xmm0); | |
316 } else { | |
317 __ fstp_d(Address(rdi, 0)); | |
318 } | |
319 __ jmp(exit); | |
320 | |
321 return start; | |
322 } | |
323 | |
324 | |
325 //------------------------------------------------------------------------------------------------------------------------ | |
326 // Return point for a Java call if there's an exception thrown in Java code. | |
327 // The exception is caught and transformed into a pending exception stored in | |
328 // JavaThread that can be tested from within the VM. | |
329 // | |
330 // Note: Usually the parameters are removed by the callee. In case of an exception | |
331 // crossing an activation frame boundary, that is not the case if the callee | |
332 // is compiled code => need to setup the rsp. | |
333 // | |
334 // rax,: exception oop | |
335 | |
336 address generate_catch_exception() { | |
337 StubCodeMark mark(this, "StubRoutines", "catch_exception"); | |
338 const Address rsp_after_call(rbp, -4 * wordSize); // same as in generate_call_stub()! | |
339 const Address thread (rbp, 9 * wordSize); // same as in generate_call_stub()! | |
340 address start = __ pc(); | |
341 | |
342 // get thread directly | |
304 | 343 __ movptr(rcx, thread); |
0 | 344 #ifdef ASSERT |
345 // verify that threads correspond | |
346 { Label L; | |
347 __ get_thread(rbx); | |
304 | 348 __ cmpptr(rbx, rcx); |
0 | 349 __ jcc(Assembler::equal, L); |
350 __ stop("StubRoutines::catch_exception: threads must correspond"); | |
351 __ bind(L); | |
352 } | |
353 #endif | |
354 // set pending exception | |
355 __ verify_oop(rax); | |
304 | 356 __ movptr(Address(rcx, Thread::pending_exception_offset()), rax ); |
0 | 357 __ lea(Address(rcx, Thread::exception_file_offset ()), |
358 ExternalAddress((address)__FILE__)); | |
359 __ movl(Address(rcx, Thread::exception_line_offset ()), __LINE__ ); | |
360 // complete return to VM | |
361 assert(StubRoutines::_call_stub_return_address != NULL, "_call_stub_return_address must have been generated before"); | |
362 __ jump(RuntimeAddress(StubRoutines::_call_stub_return_address)); | |
363 | |
364 return start; | |
365 } | |
366 | |
367 | |
368 //------------------------------------------------------------------------------------------------------------------------ | |
369 // Continuation point for runtime calls returning with a pending exception. | |
370 // The pending exception check happened in the runtime or native call stub. | |
371 // The pending exception in Thread is converted into a Java-level exception. | |
372 // | |
373 // Contract with Java-level exception handlers: | |
1295 | 374 // rax: exception |
0 | 375 // rdx: throwing pc |
376 // | |
377 // NOTE: At entry of this stub, exception-pc must be on stack !! | |
378 | |
379 address generate_forward_exception() { | |
380 StubCodeMark mark(this, "StubRoutines", "forward exception"); | |
381 address start = __ pc(); | |
1295 | 382 const Register thread = rcx; |
383 | |
384 // other registers used in this stub | |
385 const Register exception_oop = rax; | |
386 const Register handler_addr = rbx; | |
387 const Register exception_pc = rdx; | |
0 | 388 |
389 // Upon entry, the sp points to the return address returning into Java | |
390 // (interpreted or compiled) code; i.e., the return address becomes the | |
391 // throwing pc. | |
392 // | |
393 // Arguments pushed before the runtime call are still on the stack but | |
394 // the exception handler will reset the stack pointer -> ignore them. | |
395 // A potential result in registers can be ignored as well. | |
396 | |
397 #ifdef ASSERT | |
398 // make sure this code is only executed if there is a pending exception | |
399 { Label L; | |
1295 | 400 __ get_thread(thread); |
401 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); | |
0 | 402 __ jcc(Assembler::notEqual, L); |
403 __ stop("StubRoutines::forward exception: no pending exception (1)"); | |
404 __ bind(L); | |
405 } | |
406 #endif | |
407 | |
408 // compute exception handler into rbx, | |
1295 | 409 __ get_thread(thread); |
410 __ movptr(exception_pc, Address(rsp, 0)); | |
0 | 411 BLOCK_COMMENT("call exception_handler_for_return_address"); |
1295 | 412 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), thread, exception_pc); |
413 __ mov(handler_addr, rax); | |
0 | 414 |
1295 | 415 // setup rax & rdx, remove return address & clear pending exception |
416 __ get_thread(thread); | |
417 __ pop(exception_pc); | |
418 __ movptr(exception_oop, Address(thread, Thread::pending_exception_offset())); | |
419 __ movptr(Address(thread, Thread::pending_exception_offset()), NULL_WORD); | |
0 | 420 |
421 #ifdef ASSERT | |
422 // make sure exception is set | |
423 { Label L; | |
1295 | 424 __ testptr(exception_oop, exception_oop); |
0 | 425 __ jcc(Assembler::notEqual, L); |
426 __ stop("StubRoutines::forward exception: no pending exception (2)"); | |
427 __ bind(L); | |
428 } | |
429 #endif | |
430 | |
1295 | 431 // Verify that there is really a valid exception in RAX. |
432 __ verify_oop(exception_oop); | |
433 | |
0 | 434 // continue at exception handler (return address removed) |
1295 | 435 // rax: exception |
436 // rbx: exception handler | |
0 | 437 // rdx: throwing pc |
1295 | 438 __ jmp(handler_addr); |
0 | 439 |
440 return start; | |
441 } | |
442 | |
443 | |
444 //---------------------------------------------------------------------------------------------------- | |
445 // Support for jint Atomic::xchg(jint exchange_value, volatile jint* dest) | |
446 // | |
447 // xchg exists as far back as 8086, lock needed for MP only | |
448 // Stack layout immediately after call: | |
449 // | |
450 // 0 [ret addr ] <--- rsp | |
451 // 1 [ ex ] | |
452 // 2 [ dest ] | |
453 // | |
454 // Result: *dest <- ex, return (old *dest) | |
455 // | |
456 // Note: win32 does not currently use this code | |
457 | |
458 address generate_atomic_xchg() { | |
459 StubCodeMark mark(this, "StubRoutines", "atomic_xchg"); | |
460 address start = __ pc(); | |
461 | |
304 | 462 __ push(rdx); |
0 | 463 Address exchange(rsp, 2 * wordSize); |
464 Address dest_addr(rsp, 3 * wordSize); | |
465 __ movl(rax, exchange); | |
304 | 466 __ movptr(rdx, dest_addr); |
467 __ xchgl(rax, Address(rdx, 0)); | |
468 __ pop(rdx); | |
0 | 469 __ ret(0); |
470 | |
471 return start; | |
472 } | |
473 | |
474 //---------------------------------------------------------------------------------------------------- | |
475 // Support for void verify_mxcsr() | |
476 // | |
477 // This routine is used with -Xcheck:jni to verify that native | |
478 // JNI code does not return to Java code without restoring the | |
479 // MXCSR register to our expected state. | |
480 | |
481 | |
482 address generate_verify_mxcsr() { | |
483 StubCodeMark mark(this, "StubRoutines", "verify_mxcsr"); | |
484 address start = __ pc(); | |
485 | |
486 const Address mxcsr_save(rsp, 0); | |
487 | |
488 if (CheckJNICalls && UseSSE > 0 ) { | |
489 Label ok_ret; | |
490 ExternalAddress mxcsr_std(StubRoutines::addr_mxcsr_std()); | |
304 | 491 __ push(rax); |
492 __ subptr(rsp, wordSize); // allocate a temp location | |
0 | 493 __ stmxcsr(mxcsr_save); |
494 __ movl(rax, mxcsr_save); | |
495 __ andl(rax, MXCSR_MASK); | |
496 __ cmp32(rax, mxcsr_std); | |
497 __ jcc(Assembler::equal, ok_ret); | |
498 | |
499 __ warn("MXCSR changed by native JNI code."); | |
500 | |
501 __ ldmxcsr(mxcsr_std); | |
502 | |
503 __ bind(ok_ret); | |
304 | 504 __ addptr(rsp, wordSize); |
505 __ pop(rax); | |
0 | 506 } |
507 | |
508 __ ret(0); | |
509 | |
510 return start; | |
511 } | |
512 | |
513 | |
514 //--------------------------------------------------------------------------- | |
515 // Support for void verify_fpu_cntrl_wrd() | |
516 // | |
517 // This routine is used with -Xcheck:jni to verify that native | |
518 // JNI code does not return to Java code without restoring the | |
519 // FP control word to our expected state. | |
520 | |
521 address generate_verify_fpu_cntrl_wrd() { | |
522 StubCodeMark mark(this, "StubRoutines", "verify_spcw"); | |
523 address start = __ pc(); | |
524 | |
525 const Address fpu_cntrl_wrd_save(rsp, 0); | |
526 | |
527 if (CheckJNICalls) { | |
528 Label ok_ret; | |
304 | 529 __ push(rax); |
530 __ subptr(rsp, wordSize); // allocate a temp location | |
0 | 531 __ fnstcw(fpu_cntrl_wrd_save); |
532 __ movl(rax, fpu_cntrl_wrd_save); | |
533 __ andl(rax, FPU_CNTRL_WRD_MASK); | |
534 ExternalAddress fpu_std(StubRoutines::addr_fpu_cntrl_wrd_std()); | |
535 __ cmp32(rax, fpu_std); | |
536 __ jcc(Assembler::equal, ok_ret); | |
537 | |
538 __ warn("Floating point control word changed by native JNI code."); | |
539 | |
540 __ fldcw(fpu_std); | |
541 | |
542 __ bind(ok_ret); | |
304 | 543 __ addptr(rsp, wordSize); |
544 __ pop(rax); | |
0 | 545 } |
546 | |
547 __ ret(0); | |
548 | |
549 return start; | |
550 } | |
551 | |
552 //--------------------------------------------------------------------------- | |
553 // Wrapper for slow-case handling of double-to-integer conversion | |
554 // d2i or f2i fast case failed either because it is nan or because | |
555 // of under/overflow. | |
556 // Input: FPU TOS: float value | |
557 // Output: rax, (rdx): integer (long) result | |
558 | |
559 address generate_d2i_wrapper(BasicType t, address fcn) { | |
560 StubCodeMark mark(this, "StubRoutines", "d2i_wrapper"); | |
561 address start = __ pc(); | |
562 | |
563 // Capture info about frame layout | |
564 enum layout { FPUState_off = 0, | |
565 rbp_off = FPUStateSizeInWords, | |
566 rdi_off, | |
567 rsi_off, | |
568 rcx_off, | |
569 rbx_off, | |
570 saved_argument_off, | |
571 saved_argument_off2, // 2nd half of double | |
572 framesize | |
573 }; | |
574 | |
575 assert(FPUStateSizeInWords == 27, "update stack layout"); | |
576 | |
577 // Save outgoing argument to stack across push_FPU_state() | |
304 | 578 __ subptr(rsp, wordSize * 2); |
0 | 579 __ fstp_d(Address(rsp, 0)); |
580 | |
581 // Save CPU & FPU state | |
304 | 582 __ push(rbx); |
583 __ push(rcx); | |
584 __ push(rsi); | |
585 __ push(rdi); | |
586 __ push(rbp); | |
0 | 587 __ push_FPU_state(); |
588 | |
589 // push_FPU_state() resets the FP top of stack | |
590 // Load original double into FP top of stack | |
591 __ fld_d(Address(rsp, saved_argument_off * wordSize)); | |
592 // Store double into stack as outgoing argument | |
304 | 593 __ subptr(rsp, wordSize*2); |
0 | 594 __ fst_d(Address(rsp, 0)); |
595 | |
596 // Prepare FPU for doing math in C-land | |
597 __ empty_FPU_stack(); | |
598 // Call the C code to massage the double. Result in EAX | |
599 if (t == T_INT) | |
600 { BLOCK_COMMENT("SharedRuntime::d2i"); } | |
601 else if (t == T_LONG) | |
602 { BLOCK_COMMENT("SharedRuntime::d2l"); } | |
603 __ call_VM_leaf( fcn, 2 ); | |
604 | |
605 // Restore CPU & FPU state | |
606 __ pop_FPU_state(); | |
304 | 607 __ pop(rbp); |
608 __ pop(rdi); | |
609 __ pop(rsi); | |
610 __ pop(rcx); | |
611 __ pop(rbx); | |
612 __ addptr(rsp, wordSize * 2); | |
0 | 613 |
614 __ ret(0); | |
615 | |
616 return start; | |
617 } | |
618 | |
619 | |
620 //--------------------------------------------------------------------------- | |
621 // The following routine generates a subroutine to throw an asynchronous | |
622 // UnknownError when an unsafe access gets a fault that could not be | |
623 // reasonably prevented by the programmer. (Example: SIGBUS/OBJERR.) | |
624 address generate_handler_for_unsafe_access() { | |
625 StubCodeMark mark(this, "StubRoutines", "handler_for_unsafe_access"); | |
626 address start = __ pc(); | |
627 | |
304 | 628 __ push(0); // hole for return address-to-be |
629 __ pusha(); // push registers | |
0 | 630 Address next_pc(rsp, RegisterImpl::number_of_registers * BytesPerWord); |
631 BLOCK_COMMENT("call handle_unsafe_access"); | |
632 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, handle_unsafe_access))); | |
304 | 633 __ movptr(next_pc, rax); // stuff next address |
634 __ popa(); | |
0 | 635 __ ret(0); // jump to next address |
636 | |
637 return start; | |
638 } | |
639 | |
640 | |
641 //---------------------------------------------------------------------------------------------------- | |
642 // Non-destructive plausibility checks for oops | |
643 | |
644 address generate_verify_oop() { | |
645 StubCodeMark mark(this, "StubRoutines", "verify_oop"); | |
646 address start = __ pc(); | |
647 | |
648 // Incoming arguments on stack after saving rax,: | |
649 // | |
650 // [tos ]: saved rdx | |
651 // [tos + 1]: saved EFLAGS | |
652 // [tos + 2]: return address | |
653 // [tos + 3]: char* error message | |
654 // [tos + 4]: oop object to verify | |
655 // [tos + 5]: saved rax, - saved by caller and bashed | |
656 | |
657 Label exit, error; | |
304 | 658 __ pushf(); |
659 __ incrementl(ExternalAddress((address) StubRoutines::verify_oop_count_addr())); | |
660 __ push(rdx); // save rdx | |
0 | 661 // make sure object is 'reasonable' |
304 | 662 __ movptr(rax, Address(rsp, 4 * wordSize)); // get object |
663 __ testptr(rax, rax); | |
0 | 664 __ jcc(Assembler::zero, exit); // if obj is NULL it is ok |
665 | |
666 // Check if the oop is in the right area of memory | |
667 const int oop_mask = Universe::verify_oop_mask(); | |
668 const int oop_bits = Universe::verify_oop_bits(); | |
304 | 669 __ mov(rdx, rax); |
670 __ andptr(rdx, oop_mask); | |
671 __ cmpptr(rdx, oop_bits); | |
0 | 672 __ jcc(Assembler::notZero, error); |
673 | |
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674 // make sure klass is 'reasonable', which is not zero. |
304 | 675 __ movptr(rax, Address(rax, oopDesc::klass_offset_in_bytes())); // get klass |
676 __ testptr(rax, rax); | |
0 | 677 __ jcc(Assembler::zero, error); // if klass is NULL it is broken |
678 | |
679 // return if everything seems ok | |
680 __ bind(exit); | |
304 | 681 __ movptr(rax, Address(rsp, 5 * wordSize)); // get saved rax, back |
682 __ pop(rdx); // restore rdx | |
683 __ popf(); // restore EFLAGS | |
0 | 684 __ ret(3 * wordSize); // pop arguments |
685 | |
686 // handle errors | |
687 __ bind(error); | |
304 | 688 __ movptr(rax, Address(rsp, 5 * wordSize)); // get saved rax, back |
689 __ pop(rdx); // get saved rdx back | |
690 __ popf(); // get saved EFLAGS off stack -- will be ignored | |
691 __ pusha(); // push registers (eip = return address & msg are already pushed) | |
0 | 692 BLOCK_COMMENT("call MacroAssembler::debug"); |
304 | 693 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, MacroAssembler::debug32))); |
694 __ popa(); | |
0 | 695 __ ret(3 * wordSize); // pop arguments |
696 return start; | |
697 } | |
698 | |
699 // | |
700 // Generate pre-barrier for array stores | |
701 // | |
702 // Input: | |
703 // start - starting address | |
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704 // count - element count |
2324 | 705 void gen_write_ref_array_pre_barrier(Register start, Register count, bool uninitialized_target) { |
0 | 706 assert_different_registers(start, count); |
707 BarrierSet* bs = Universe::heap()->barrier_set(); | |
708 switch (bs->kind()) { | |
709 case BarrierSet::G1SATBCT: | |
710 case BarrierSet::G1SATBCTLogging: | |
2324 | 711 // With G1, don't generate the call if we statically know that the target in uninitialized |
712 if (!uninitialized_target) { | |
713 __ pusha(); // push registers | |
714 __ call_VM_leaf(CAST_FROM_FN_PTR(address, BarrierSet::static_write_ref_array_pre), | |
715 start, count); | |
716 __ popa(); | |
717 } | |
0 | 718 break; |
719 case BarrierSet::CardTableModRef: | |
720 case BarrierSet::CardTableExtension: | |
721 case BarrierSet::ModRef: | |
722 break; | |
723 default : | |
724 ShouldNotReachHere(); | |
725 | |
726 } | |
727 } | |
728 | |
729 | |
730 // | |
731 // Generate a post-barrier for an array store | |
732 // | |
733 // start - starting address | |
734 // count - element count | |
735 // | |
736 // The two input registers are overwritten. | |
737 // | |
738 void gen_write_ref_array_post_barrier(Register start, Register count) { | |
739 BarrierSet* bs = Universe::heap()->barrier_set(); | |
740 assert_different_registers(start, count); | |
741 switch (bs->kind()) { | |
742 case BarrierSet::G1SATBCT: | |
743 case BarrierSet::G1SATBCTLogging: | |
744 { | |
304 | 745 __ pusha(); // push registers |
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746 __ call_VM_leaf(CAST_FROM_FN_PTR(address, BarrierSet::static_write_ref_array_post), |
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747 start, count); |
304 | 748 __ popa(); |
0 | 749 } |
750 break; | |
751 | |
752 case BarrierSet::CardTableModRef: | |
753 case BarrierSet::CardTableExtension: | |
754 { | |
755 CardTableModRefBS* ct = (CardTableModRefBS*)bs; | |
756 assert(sizeof(*ct->byte_map_base) == sizeof(jbyte), "adjust this code"); | |
757 | |
758 Label L_loop; | |
759 const Register end = count; // elements count; end == start+count-1 | |
760 assert_different_registers(start, end); | |
761 | |
304 | 762 __ lea(end, Address(start, count, Address::times_ptr, -wordSize)); |
763 __ shrptr(start, CardTableModRefBS::card_shift); | |
764 __ shrptr(end, CardTableModRefBS::card_shift); | |
765 __ subptr(end, start); // end --> count | |
0 | 766 __ BIND(L_loop); |
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767 intptr_t disp = (intptr_t) ct->byte_map_base; |
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768 Address cardtable(start, count, Address::times_1, disp); |
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769 __ movb(cardtable, 0); |
0 | 770 __ decrement(count); |
771 __ jcc(Assembler::greaterEqual, L_loop); | |
772 } | |
773 break; | |
774 case BarrierSet::ModRef: | |
775 break; | |
776 default : | |
777 ShouldNotReachHere(); | |
778 | |
779 } | |
780 } | |
781 | |
405 | 782 |
783 // Copy 64 bytes chunks | |
784 // | |
785 // Inputs: | |
786 // from - source array address | |
787 // to_from - destination array address - from | |
788 // qword_count - 8-bytes element count, negative | |
789 // | |
790 void xmm_copy_forward(Register from, Register to_from, Register qword_count) { | |
791 assert( UseSSE >= 2, "supported cpu only" ); | |
792 Label L_copy_64_bytes_loop, L_copy_64_bytes, L_copy_8_bytes, L_exit; | |
793 // Copy 64-byte chunks | |
794 __ jmpb(L_copy_64_bytes); | |
1365 | 795 __ align(OptoLoopAlignment); |
405 | 796 __ BIND(L_copy_64_bytes_loop); |
797 | |
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798 if (UseUnalignedLoadStores) { |
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799 if (UseAVX >= 2) { |
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800 __ vmovdqu(xmm0, Address(from, 0)); |
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801 __ vmovdqu(Address(from, to_from, Address::times_1, 0), xmm0); |
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802 __ vmovdqu(xmm1, Address(from, 32)); |
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803 __ vmovdqu(Address(from, to_from, Address::times_1, 32), xmm1); |
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804 } else { |
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805 __ movdqu(xmm0, Address(from, 0)); |
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806 __ movdqu(Address(from, to_from, Address::times_1, 0), xmm0); |
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807 __ movdqu(xmm1, Address(from, 16)); |
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808 __ movdqu(Address(from, to_from, Address::times_1, 16), xmm1); |
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809 __ movdqu(xmm2, Address(from, 32)); |
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810 __ movdqu(Address(from, to_from, Address::times_1, 32), xmm2); |
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811 __ movdqu(xmm3, Address(from, 48)); |
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812 __ movdqu(Address(from, to_from, Address::times_1, 48), xmm3); |
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813 } |
405 | 814 } else { |
815 __ movq(xmm0, Address(from, 0)); | |
816 __ movq(Address(from, to_from, Address::times_1, 0), xmm0); | |
817 __ movq(xmm1, Address(from, 8)); | |
818 __ movq(Address(from, to_from, Address::times_1, 8), xmm1); | |
819 __ movq(xmm2, Address(from, 16)); | |
820 __ movq(Address(from, to_from, Address::times_1, 16), xmm2); | |
821 __ movq(xmm3, Address(from, 24)); | |
822 __ movq(Address(from, to_from, Address::times_1, 24), xmm3); | |
823 __ movq(xmm4, Address(from, 32)); | |
824 __ movq(Address(from, to_from, Address::times_1, 32), xmm4); | |
825 __ movq(xmm5, Address(from, 40)); | |
826 __ movq(Address(from, to_from, Address::times_1, 40), xmm5); | |
827 __ movq(xmm6, Address(from, 48)); | |
828 __ movq(Address(from, to_from, Address::times_1, 48), xmm6); | |
829 __ movq(xmm7, Address(from, 56)); | |
830 __ movq(Address(from, to_from, Address::times_1, 56), xmm7); | |
831 } | |
832 | |
833 __ addl(from, 64); | |
834 __ BIND(L_copy_64_bytes); | |
835 __ subl(qword_count, 8); | |
836 __ jcc(Assembler::greaterEqual, L_copy_64_bytes_loop); | |
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837 |
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838 if (UseUnalignedLoadStores && (UseAVX >= 2)) { |
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839 // clean upper bits of YMM registers |
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840 __ vzeroupper(); |
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841 } |
405 | 842 __ addl(qword_count, 8); |
843 __ jccb(Assembler::zero, L_exit); | |
844 // | |
845 // length is too short, just copy qwords | |
846 // | |
847 __ BIND(L_copy_8_bytes); | |
848 __ movq(xmm0, Address(from, 0)); | |
849 __ movq(Address(from, to_from, Address::times_1), xmm0); | |
850 __ addl(from, 8); | |
851 __ decrement(qword_count); | |
852 __ jcc(Assembler::greater, L_copy_8_bytes); | |
853 __ BIND(L_exit); | |
854 } | |
855 | |
0 | 856 // Copy 64 bytes chunks |
857 // | |
858 // Inputs: | |
859 // from - source array address | |
860 // to_from - destination array address - from | |
861 // qword_count - 8-bytes element count, negative | |
862 // | |
863 void mmx_copy_forward(Register from, Register to_from, Register qword_count) { | |
405 | 864 assert( VM_Version::supports_mmx(), "supported cpu only" ); |
0 | 865 Label L_copy_64_bytes_loop, L_copy_64_bytes, L_copy_8_bytes, L_exit; |
866 // Copy 64-byte chunks | |
867 __ jmpb(L_copy_64_bytes); | |
1365 | 868 __ align(OptoLoopAlignment); |
0 | 869 __ BIND(L_copy_64_bytes_loop); |
870 __ movq(mmx0, Address(from, 0)); | |
871 __ movq(mmx1, Address(from, 8)); | |
872 __ movq(mmx2, Address(from, 16)); | |
873 __ movq(Address(from, to_from, Address::times_1, 0), mmx0); | |
874 __ movq(mmx3, Address(from, 24)); | |
875 __ movq(Address(from, to_from, Address::times_1, 8), mmx1); | |
876 __ movq(mmx4, Address(from, 32)); | |
877 __ movq(Address(from, to_from, Address::times_1, 16), mmx2); | |
878 __ movq(mmx5, Address(from, 40)); | |
879 __ movq(Address(from, to_from, Address::times_1, 24), mmx3); | |
880 __ movq(mmx6, Address(from, 48)); | |
881 __ movq(Address(from, to_from, Address::times_1, 32), mmx4); | |
882 __ movq(mmx7, Address(from, 56)); | |
883 __ movq(Address(from, to_from, Address::times_1, 40), mmx5); | |
884 __ movq(Address(from, to_from, Address::times_1, 48), mmx6); | |
885 __ movq(Address(from, to_from, Address::times_1, 56), mmx7); | |
304 | 886 __ addptr(from, 64); |
0 | 887 __ BIND(L_copy_64_bytes); |
888 __ subl(qword_count, 8); | |
889 __ jcc(Assembler::greaterEqual, L_copy_64_bytes_loop); | |
890 __ addl(qword_count, 8); | |
891 __ jccb(Assembler::zero, L_exit); | |
892 // | |
893 // length is too short, just copy qwords | |
894 // | |
895 __ BIND(L_copy_8_bytes); | |
896 __ movq(mmx0, Address(from, 0)); | |
897 __ movq(Address(from, to_from, Address::times_1), mmx0); | |
304 | 898 __ addptr(from, 8); |
0 | 899 __ decrement(qword_count); |
900 __ jcc(Assembler::greater, L_copy_8_bytes); | |
901 __ BIND(L_exit); | |
902 __ emms(); | |
903 } | |
904 | |
905 address generate_disjoint_copy(BasicType t, bool aligned, | |
906 Address::ScaleFactor sf, | |
2324 | 907 address* entry, const char *name, |
908 bool dest_uninitialized = false) { | |
0 | 909 __ align(CodeEntryAlignment); |
910 StubCodeMark mark(this, "StubRoutines", name); | |
911 address start = __ pc(); | |
912 | |
913 Label L_0_count, L_exit, L_skip_align1, L_skip_align2, L_copy_byte; | |
914 Label L_copy_2_bytes, L_copy_4_bytes, L_copy_64_bytes; | |
915 | |
304 | 916 int shift = Address::times_ptr - sf; |
0 | 917 |
918 const Register from = rsi; // source array address | |
919 const Register to = rdi; // destination array address | |
920 const Register count = rcx; // elements count | |
921 const Register to_from = to; // (to - from) | |
922 const Register saved_to = rdx; // saved destination array address | |
923 | |
924 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
304 | 925 __ push(rsi); |
926 __ push(rdi); | |
927 __ movptr(from , Address(rsp, 12+ 4)); | |
928 __ movptr(to , Address(rsp, 12+ 8)); | |
0 | 929 __ movl(count, Address(rsp, 12+ 12)); |
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930 |
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931 if (entry != NULL) { |
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932 *entry = __ pc(); // Entry point from conjoint arraycopy stub. |
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933 BLOCK_COMMENT("Entry:"); |
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934 } |
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935 |
0 | 936 if (t == T_OBJECT) { |
937 __ testl(count, count); | |
938 __ jcc(Assembler::zero, L_0_count); | |
2324 | 939 gen_write_ref_array_pre_barrier(to, count, dest_uninitialized); |
304 | 940 __ mov(saved_to, to); // save 'to' |
0 | 941 } |
942 | |
304 | 943 __ subptr(to, from); // to --> to_from |
0 | 944 __ cmpl(count, 2<<shift); // Short arrays (< 8 bytes) copy by element |
945 __ jcc(Assembler::below, L_copy_4_bytes); // use unsigned cmp | |
405 | 946 if (!UseUnalignedLoadStores && !aligned && (t == T_BYTE || t == T_SHORT)) { |
0 | 947 // align source address at 4 bytes address boundary |
948 if (t == T_BYTE) { | |
949 // One byte misalignment happens only for byte arrays | |
950 __ testl(from, 1); | |
951 __ jccb(Assembler::zero, L_skip_align1); | |
952 __ movb(rax, Address(from, 0)); | |
953 __ movb(Address(from, to_from, Address::times_1, 0), rax); | |
954 __ increment(from); | |
955 __ decrement(count); | |
956 __ BIND(L_skip_align1); | |
957 } | |
958 // Two bytes misalignment happens only for byte and short (char) arrays | |
959 __ testl(from, 2); | |
960 __ jccb(Assembler::zero, L_skip_align2); | |
961 __ movw(rax, Address(from, 0)); | |
962 __ movw(Address(from, to_from, Address::times_1, 0), rax); | |
304 | 963 __ addptr(from, 2); |
0 | 964 __ subl(count, 1<<(shift-1)); |
965 __ BIND(L_skip_align2); | |
966 } | |
967 if (!VM_Version::supports_mmx()) { | |
304 | 968 __ mov(rax, count); // save 'count' |
969 __ shrl(count, shift); // bytes count | |
970 __ addptr(to_from, from);// restore 'to' | |
971 __ rep_mov(); | |
972 __ subptr(to_from, from);// restore 'to_from' | |
973 __ mov(count, rax); // restore 'count' | |
0 | 974 __ jmpb(L_copy_2_bytes); // all dwords were copied |
975 } else { | |
405 | 976 if (!UseUnalignedLoadStores) { |
977 // align to 8 bytes, we know we are 4 byte aligned to start | |
978 __ testptr(from, 4); | |
979 __ jccb(Assembler::zero, L_copy_64_bytes); | |
980 __ movl(rax, Address(from, 0)); | |
981 __ movl(Address(from, to_from, Address::times_1, 0), rax); | |
982 __ addptr(from, 4); | |
983 __ subl(count, 1<<shift); | |
984 } | |
0 | 985 __ BIND(L_copy_64_bytes); |
304 | 986 __ mov(rax, count); |
0 | 987 __ shrl(rax, shift+1); // 8 bytes chunk count |
988 // | |
989 // Copy 8-byte chunks through MMX registers, 8 per iteration of the loop | |
990 // | |
405 | 991 if (UseXMMForArrayCopy) { |
992 xmm_copy_forward(from, to_from, rax); | |
993 } else { | |
994 mmx_copy_forward(from, to_from, rax); | |
995 } | |
0 | 996 } |
997 // copy tailing dword | |
998 __ BIND(L_copy_4_bytes); | |
999 __ testl(count, 1<<shift); | |
1000 __ jccb(Assembler::zero, L_copy_2_bytes); | |
1001 __ movl(rax, Address(from, 0)); | |
1002 __ movl(Address(from, to_from, Address::times_1, 0), rax); | |
1003 if (t == T_BYTE || t == T_SHORT) { | |
304 | 1004 __ addptr(from, 4); |
0 | 1005 __ BIND(L_copy_2_bytes); |
1006 // copy tailing word | |
1007 __ testl(count, 1<<(shift-1)); | |
1008 __ jccb(Assembler::zero, L_copy_byte); | |
1009 __ movw(rax, Address(from, 0)); | |
1010 __ movw(Address(from, to_from, Address::times_1, 0), rax); | |
1011 if (t == T_BYTE) { | |
304 | 1012 __ addptr(from, 2); |
0 | 1013 __ BIND(L_copy_byte); |
1014 // copy tailing byte | |
1015 __ testl(count, 1); | |
1016 __ jccb(Assembler::zero, L_exit); | |
1017 __ movb(rax, Address(from, 0)); | |
1018 __ movb(Address(from, to_from, Address::times_1, 0), rax); | |
1019 __ BIND(L_exit); | |
1020 } else { | |
1021 __ BIND(L_copy_byte); | |
1022 } | |
1023 } else { | |
1024 __ BIND(L_copy_2_bytes); | |
1025 } | |
1026 | |
1027 if (t == T_OBJECT) { | |
1028 __ movl(count, Address(rsp, 12+12)); // reread 'count' | |
304 | 1029 __ mov(to, saved_to); // restore 'to' |
0 | 1030 gen_write_ref_array_post_barrier(to, count); |
1031 __ BIND(L_0_count); | |
1032 } | |
1033 inc_copy_counter_np(t); | |
304 | 1034 __ pop(rdi); |
1035 __ pop(rsi); | |
0 | 1036 __ leave(); // required for proper stackwalking of RuntimeStub frame |
304 | 1037 __ xorptr(rax, rax); // return 0 |
0 | 1038 __ ret(0); |
1039 return start; | |
1040 } | |
1041 | |
1042 | |
1763 | 1043 address generate_fill(BasicType t, bool aligned, const char *name) { |
1044 __ align(CodeEntryAlignment); | |
1045 StubCodeMark mark(this, "StubRoutines", name); | |
1046 address start = __ pc(); | |
1047 | |
1048 BLOCK_COMMENT("Entry:"); | |
1049 | |
1050 const Register to = rdi; // source array address | |
1051 const Register value = rdx; // value | |
1052 const Register count = rsi; // elements count | |
1053 | |
1054 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1055 __ push(rsi); | |
1056 __ push(rdi); | |
1057 __ movptr(to , Address(rsp, 12+ 4)); | |
1058 __ movl(value, Address(rsp, 12+ 8)); | |
1059 __ movl(count, Address(rsp, 12+ 12)); | |
1060 | |
1061 __ generate_fill(t, aligned, to, value, count, rax, xmm0); | |
1062 | |
1063 __ pop(rdi); | |
1064 __ pop(rsi); | |
1065 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
1066 __ ret(0); | |
1067 return start; | |
1068 } | |
1069 | |
0 | 1070 address generate_conjoint_copy(BasicType t, bool aligned, |
1071 Address::ScaleFactor sf, | |
1072 address nooverlap_target, | |
2324 | 1073 address* entry, const char *name, |
1074 bool dest_uninitialized = false) { | |
0 | 1075 __ align(CodeEntryAlignment); |
1076 StubCodeMark mark(this, "StubRoutines", name); | |
1077 address start = __ pc(); | |
1078 | |
1079 Label L_0_count, L_exit, L_skip_align1, L_skip_align2, L_copy_byte; | |
1080 Label L_copy_2_bytes, L_copy_4_bytes, L_copy_8_bytes, L_copy_8_bytes_loop; | |
1081 | |
304 | 1082 int shift = Address::times_ptr - sf; |
0 | 1083 |
1084 const Register src = rax; // source array address | |
1085 const Register dst = rdx; // destination array address | |
1086 const Register from = rsi; // source array address | |
1087 const Register to = rdi; // destination array address | |
1088 const Register count = rcx; // elements count | |
1089 const Register end = rax; // array end address | |
1090 | |
1091 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
304 | 1092 __ push(rsi); |
1093 __ push(rdi); | |
1094 __ movptr(src , Address(rsp, 12+ 4)); // from | |
1095 __ movptr(dst , Address(rsp, 12+ 8)); // to | |
1096 __ movl2ptr(count, Address(rsp, 12+12)); // count | |
0 | 1097 |
1098 if (entry != NULL) { | |
1099 *entry = __ pc(); // Entry point from generic arraycopy stub. | |
1100 BLOCK_COMMENT("Entry:"); | |
1101 } | |
1102 | |
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1103 // nooverlap_target expects arguments in rsi and rdi. |
304 | 1104 __ mov(from, src); |
1105 __ mov(to , dst); | |
0 | 1106 |
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1107 // arrays overlap test: dispatch to disjoint stub if necessary. |
0 | 1108 RuntimeAddress nooverlap(nooverlap_target); |
304 | 1109 __ cmpptr(dst, src); |
1110 __ lea(end, Address(src, count, sf, 0)); // src + count * elem_size | |
0 | 1111 __ jump_cc(Assembler::belowEqual, nooverlap); |
304 | 1112 __ cmpptr(dst, end); |
0 | 1113 __ jump_cc(Assembler::aboveEqual, nooverlap); |
1114 | |
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1115 if (t == T_OBJECT) { |
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1116 __ testl(count, count); |
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1117 __ jcc(Assembler::zero, L_0_count); |
2324 | 1118 gen_write_ref_array_pre_barrier(dst, count, dest_uninitialized); |
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1119 } |
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1120 |
0 | 1121 // copy from high to low |
1122 __ cmpl(count, 2<<shift); // Short arrays (< 8 bytes) copy by element | |
1123 __ jcc(Assembler::below, L_copy_4_bytes); // use unsigned cmp | |
1124 if (t == T_BYTE || t == T_SHORT) { | |
1125 // Align the end of destination array at 4 bytes address boundary | |
304 | 1126 __ lea(end, Address(dst, count, sf, 0)); |
0 | 1127 if (t == T_BYTE) { |
1128 // One byte misalignment happens only for byte arrays | |
1129 __ testl(end, 1); | |
1130 __ jccb(Assembler::zero, L_skip_align1); | |
1131 __ decrement(count); | |
1132 __ movb(rdx, Address(from, count, sf, 0)); | |
1133 __ movb(Address(to, count, sf, 0), rdx); | |
1134 __ BIND(L_skip_align1); | |
1135 } | |
1136 // Two bytes misalignment happens only for byte and short (char) arrays | |
1137 __ testl(end, 2); | |
1138 __ jccb(Assembler::zero, L_skip_align2); | |
304 | 1139 __ subptr(count, 1<<(shift-1)); |
0 | 1140 __ movw(rdx, Address(from, count, sf, 0)); |
1141 __ movw(Address(to, count, sf, 0), rdx); | |
1142 __ BIND(L_skip_align2); | |
1143 __ cmpl(count, 2<<shift); // Short arrays (< 8 bytes) copy by element | |
1144 __ jcc(Assembler::below, L_copy_4_bytes); | |
1145 } | |
1146 | |
1147 if (!VM_Version::supports_mmx()) { | |
1148 __ std(); | |
304 | 1149 __ mov(rax, count); // Save 'count' |
1150 __ mov(rdx, to); // Save 'to' | |
1151 __ lea(rsi, Address(from, count, sf, -4)); | |
1152 __ lea(rdi, Address(to , count, sf, -4)); | |
1153 __ shrptr(count, shift); // bytes count | |
1154 __ rep_mov(); | |
0 | 1155 __ cld(); |
304 | 1156 __ mov(count, rax); // restore 'count' |
0 | 1157 __ andl(count, (1<<shift)-1); // mask the number of rest elements |
304 | 1158 __ movptr(from, Address(rsp, 12+4)); // reread 'from' |
1159 __ mov(to, rdx); // restore 'to' | |
0 | 1160 __ jmpb(L_copy_2_bytes); // all dword were copied |
1161 } else { | |
1162 // Align to 8 bytes the end of array. It is aligned to 4 bytes already. | |
304 | 1163 __ testptr(end, 4); |
0 | 1164 __ jccb(Assembler::zero, L_copy_8_bytes); |
1165 __ subl(count, 1<<shift); | |
1166 __ movl(rdx, Address(from, count, sf, 0)); | |
1167 __ movl(Address(to, count, sf, 0), rdx); | |
1168 __ jmpb(L_copy_8_bytes); | |
1169 | |
1365 | 1170 __ align(OptoLoopAlignment); |
0 | 1171 // Move 8 bytes |
1172 __ BIND(L_copy_8_bytes_loop); | |
405 | 1173 if (UseXMMForArrayCopy) { |
1174 __ movq(xmm0, Address(from, count, sf, 0)); | |
1175 __ movq(Address(to, count, sf, 0), xmm0); | |
1176 } else { | |
1177 __ movq(mmx0, Address(from, count, sf, 0)); | |
1178 __ movq(Address(to, count, sf, 0), mmx0); | |
1179 } | |
0 | 1180 __ BIND(L_copy_8_bytes); |
1181 __ subl(count, 2<<shift); | |
1182 __ jcc(Assembler::greaterEqual, L_copy_8_bytes_loop); | |
1183 __ addl(count, 2<<shift); | |
405 | 1184 if (!UseXMMForArrayCopy) { |
1185 __ emms(); | |
1186 } | |
0 | 1187 } |
1188 __ BIND(L_copy_4_bytes); | |
1189 // copy prefix qword | |
1190 __ testl(count, 1<<shift); | |
1191 __ jccb(Assembler::zero, L_copy_2_bytes); | |
1192 __ movl(rdx, Address(from, count, sf, -4)); | |
1193 __ movl(Address(to, count, sf, -4), rdx); | |
1194 | |
1195 if (t == T_BYTE || t == T_SHORT) { | |
1196 __ subl(count, (1<<shift)); | |
1197 __ BIND(L_copy_2_bytes); | |
1198 // copy prefix dword | |
1199 __ testl(count, 1<<(shift-1)); | |
1200 __ jccb(Assembler::zero, L_copy_byte); | |
1201 __ movw(rdx, Address(from, count, sf, -2)); | |
1202 __ movw(Address(to, count, sf, -2), rdx); | |
1203 if (t == T_BYTE) { | |
1204 __ subl(count, 1<<(shift-1)); | |
1205 __ BIND(L_copy_byte); | |
1206 // copy prefix byte | |
1207 __ testl(count, 1); | |
1208 __ jccb(Assembler::zero, L_exit); | |
1209 __ movb(rdx, Address(from, 0)); | |
1210 __ movb(Address(to, 0), rdx); | |
1211 __ BIND(L_exit); | |
1212 } else { | |
1213 __ BIND(L_copy_byte); | |
1214 } | |
1215 } else { | |
1216 __ BIND(L_copy_2_bytes); | |
1217 } | |
1218 if (t == T_OBJECT) { | |
304 | 1219 __ movl2ptr(count, Address(rsp, 12+12)); // reread count |
0 | 1220 gen_write_ref_array_post_barrier(to, count); |
1221 __ BIND(L_0_count); | |
1222 } | |
1223 inc_copy_counter_np(t); | |
304 | 1224 __ pop(rdi); |
1225 __ pop(rsi); | |
0 | 1226 __ leave(); // required for proper stackwalking of RuntimeStub frame |
304 | 1227 __ xorptr(rax, rax); // return 0 |
0 | 1228 __ ret(0); |
1229 return start; | |
1230 } | |
1231 | |
1232 | |
1233 address generate_disjoint_long_copy(address* entry, const char *name) { | |
1234 __ align(CodeEntryAlignment); | |
1235 StubCodeMark mark(this, "StubRoutines", name); | |
1236 address start = __ pc(); | |
1237 | |
1238 Label L_copy_8_bytes, L_copy_8_bytes_loop; | |
1239 const Register from = rax; // source array address | |
1240 const Register to = rdx; // destination array address | |
1241 const Register count = rcx; // elements count | |
1242 const Register to_from = rdx; // (to - from) | |
1243 | |
1244 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
304 | 1245 __ movptr(from , Address(rsp, 8+0)); // from |
1246 __ movptr(to , Address(rsp, 8+4)); // to | |
1247 __ movl2ptr(count, Address(rsp, 8+8)); // count | |
0 | 1248 |
1249 *entry = __ pc(); // Entry point from conjoint arraycopy stub. | |
1250 BLOCK_COMMENT("Entry:"); | |
1251 | |
304 | 1252 __ subptr(to, from); // to --> to_from |
0 | 1253 if (VM_Version::supports_mmx()) { |
405 | 1254 if (UseXMMForArrayCopy) { |
1255 xmm_copy_forward(from, to_from, count); | |
1256 } else { | |
1257 mmx_copy_forward(from, to_from, count); | |
1258 } | |
0 | 1259 } else { |
1260 __ jmpb(L_copy_8_bytes); | |
1365 | 1261 __ align(OptoLoopAlignment); |
0 | 1262 __ BIND(L_copy_8_bytes_loop); |
1263 __ fild_d(Address(from, 0)); | |
1264 __ fistp_d(Address(from, to_from, Address::times_1)); | |
304 | 1265 __ addptr(from, 8); |
0 | 1266 __ BIND(L_copy_8_bytes); |
1267 __ decrement(count); | |
1268 __ jcc(Assembler::greaterEqual, L_copy_8_bytes_loop); | |
1269 } | |
1270 inc_copy_counter_np(T_LONG); | |
1271 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
304 | 1272 __ xorptr(rax, rax); // return 0 |
0 | 1273 __ ret(0); |
1274 return start; | |
1275 } | |
1276 | |
1277 address generate_conjoint_long_copy(address nooverlap_target, | |
1278 address* entry, const char *name) { | |
1279 __ align(CodeEntryAlignment); | |
1280 StubCodeMark mark(this, "StubRoutines", name); | |
1281 address start = __ pc(); | |
1282 | |
1283 Label L_copy_8_bytes, L_copy_8_bytes_loop; | |
1284 const Register from = rax; // source array address | |
1285 const Register to = rdx; // destination array address | |
1286 const Register count = rcx; // elements count | |
1287 const Register end_from = rax; // source array end address | |
1288 | |
1289 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
304 | 1290 __ movptr(from , Address(rsp, 8+0)); // from |
1291 __ movptr(to , Address(rsp, 8+4)); // to | |
1292 __ movl2ptr(count, Address(rsp, 8+8)); // count | |
0 | 1293 |
1294 *entry = __ pc(); // Entry point from generic arraycopy stub. | |
1295 BLOCK_COMMENT("Entry:"); | |
1296 | |
1297 // arrays overlap test | |
304 | 1298 __ cmpptr(to, from); |
0 | 1299 RuntimeAddress nooverlap(nooverlap_target); |
1300 __ jump_cc(Assembler::belowEqual, nooverlap); | |
304 | 1301 __ lea(end_from, Address(from, count, Address::times_8, 0)); |
1302 __ cmpptr(to, end_from); | |
1303 __ movptr(from, Address(rsp, 8)); // from | |
0 | 1304 __ jump_cc(Assembler::aboveEqual, nooverlap); |
1305 | |
1306 __ jmpb(L_copy_8_bytes); | |
1307 | |
1365 | 1308 __ align(OptoLoopAlignment); |
0 | 1309 __ BIND(L_copy_8_bytes_loop); |
1310 if (VM_Version::supports_mmx()) { | |
405 | 1311 if (UseXMMForArrayCopy) { |
1312 __ movq(xmm0, Address(from, count, Address::times_8)); | |
1313 __ movq(Address(to, count, Address::times_8), xmm0); | |
1314 } else { | |
1315 __ movq(mmx0, Address(from, count, Address::times_8)); | |
1316 __ movq(Address(to, count, Address::times_8), mmx0); | |
1317 } | |
0 | 1318 } else { |
1319 __ fild_d(Address(from, count, Address::times_8)); | |
1320 __ fistp_d(Address(to, count, Address::times_8)); | |
1321 } | |
1322 __ BIND(L_copy_8_bytes); | |
1323 __ decrement(count); | |
1324 __ jcc(Assembler::greaterEqual, L_copy_8_bytes_loop); | |
1325 | |
405 | 1326 if (VM_Version::supports_mmx() && !UseXMMForArrayCopy) { |
0 | 1327 __ emms(); |
1328 } | |
1329 inc_copy_counter_np(T_LONG); | |
1330 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
304 | 1331 __ xorptr(rax, rax); // return 0 |
0 | 1332 __ ret(0); |
1333 return start; | |
1334 } | |
1335 | |
1336 | |
1337 // Helper for generating a dynamic type check. | |
1338 // The sub_klass must be one of {rbx, rdx, rsi}. | |
1339 // The temp is killed. | |
1340 void generate_type_check(Register sub_klass, | |
1341 Address& super_check_offset_addr, | |
1342 Address& super_klass_addr, | |
1343 Register temp, | |
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1344 Label* L_success, Label* L_failure) { |
0 | 1345 BLOCK_COMMENT("type_check:"); |
1346 | |
1347 Label L_fallthrough; | |
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1348 #define LOCAL_JCC(assembler_con, label_ptr) \ |
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1349 if (label_ptr != NULL) __ jcc(assembler_con, *(label_ptr)); \ |
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1350 else __ jcc(assembler_con, L_fallthrough) /*omit semi*/ |
0 | 1351 |
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1352 // The following is a strange variation of the fast path which requires |
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1353 // one less register, because needed values are on the argument stack. |
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1354 // __ check_klass_subtype_fast_path(sub_klass, *super_klass*, temp, |
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1355 // L_success, L_failure, NULL); |
0 | 1356 assert_different_registers(sub_klass, temp); |
1357 | |
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1358 int sc_offset = in_bytes(Klass::secondary_super_cache_offset()); |
0 | 1359 |
1360 // if the pointers are equal, we are done (e.g., String[] elements) | |
304 | 1361 __ cmpptr(sub_klass, super_klass_addr); |
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1362 LOCAL_JCC(Assembler::equal, L_success); |
0 | 1363 |
1364 // check the supertype display: | |
304 | 1365 __ movl2ptr(temp, super_check_offset_addr); |
0 | 1366 Address super_check_addr(sub_klass, temp, Address::times_1, 0); |
304 | 1367 __ movptr(temp, super_check_addr); // load displayed supertype |
1368 __ cmpptr(temp, super_klass_addr); // test the super type | |
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1369 LOCAL_JCC(Assembler::equal, L_success); |
0 | 1370 |
1371 // if it was a primary super, we can just fail immediately | |
1372 __ cmpl(super_check_offset_addr, sc_offset); | |
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1373 LOCAL_JCC(Assembler::notEqual, L_failure); |
0 | 1374 |
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1375 // The repne_scan instruction uses fixed registers, which will get spilled. |
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1376 // We happen to know this works best when super_klass is in rax. |
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1377 Register super_klass = temp; |
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1378 __ movptr(super_klass, super_klass_addr); |
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1379 __ check_klass_subtype_slow_path(sub_klass, super_klass, noreg, noreg, |
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1380 L_success, L_failure); |
0 | 1381 |
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1382 __ bind(L_fallthrough); |
0 | 1383 |
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1384 if (L_success == NULL) { BLOCK_COMMENT("L_success:"); } |
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1385 if (L_failure == NULL) { BLOCK_COMMENT("L_failure:"); } |
0 | 1386 |
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1387 #undef LOCAL_JCC |
0 | 1388 } |
1389 | |
1390 // | |
1391 // Generate checkcasting array copy stub | |
1392 // | |
1393 // Input: | |
1394 // 4(rsp) - source array address | |
1395 // 8(rsp) - destination array address | |
1396 // 12(rsp) - element count, can be zero | |
1397 // 16(rsp) - size_t ckoff (super_check_offset) | |
1398 // 20(rsp) - oop ckval (super_klass) | |
1399 // | |
1400 // Output: | |
1401 // rax, == 0 - success | |
1402 // rax, == -1^K - failure, where K is partial transfer count | |
1403 // | |
2324 | 1404 address generate_checkcast_copy(const char *name, address* entry, bool dest_uninitialized = false) { |
0 | 1405 __ align(CodeEntryAlignment); |
1406 StubCodeMark mark(this, "StubRoutines", name); | |
1407 address start = __ pc(); | |
1408 | |
1409 Label L_load_element, L_store_element, L_do_card_marks, L_done; | |
1410 | |
1411 // register use: | |
1412 // rax, rdx, rcx -- loop control (end_from, end_to, count) | |
1413 // rdi, rsi -- element access (oop, klass) | |
1414 // rbx, -- temp | |
1415 const Register from = rax; // source array address | |
1416 const Register to = rdx; // destination array address | |
1417 const Register length = rcx; // elements count | |
1418 const Register elem = rdi; // each oop copied | |
1419 const Register elem_klass = rsi; // each elem._klass (sub_klass) | |
1420 const Register temp = rbx; // lone remaining temp | |
1421 | |
1422 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
1423 | |
304 | 1424 __ push(rsi); |
1425 __ push(rdi); | |
1426 __ push(rbx); | |
0 | 1427 |
1428 Address from_arg(rsp, 16+ 4); // from | |
1429 Address to_arg(rsp, 16+ 8); // to | |
1430 Address length_arg(rsp, 16+12); // elements count | |
1431 Address ckoff_arg(rsp, 16+16); // super_check_offset | |
1432 Address ckval_arg(rsp, 16+20); // super_klass | |
1433 | |
1434 // Load up: | |
304 | 1435 __ movptr(from, from_arg); |
1436 __ movptr(to, to_arg); | |
1437 __ movl2ptr(length, length_arg); | |
0 | 1438 |
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1439 if (entry != NULL) { |
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1440 *entry = __ pc(); // Entry point from generic arraycopy stub. |
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1441 BLOCK_COMMENT("Entry:"); |
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1442 } |
0 | 1443 |
1444 //--------------------------------------------------------------- | |
1445 // Assembler stub will be used for this call to arraycopy | |
1446 // if the two arrays are subtypes of Object[] but the | |
1447 // destination array type is not equal to or a supertype | |
1448 // of the source type. Each element must be separately | |
1449 // checked. | |
1450 | |
1451 // Loop-invariant addresses. They are exclusive end pointers. | |
304 | 1452 Address end_from_addr(from, length, Address::times_ptr, 0); |
1453 Address end_to_addr(to, length, Address::times_ptr, 0); | |
0 | 1454 |
1455 Register end_from = from; // re-use | |
1456 Register end_to = to; // re-use | |
1457 Register count = length; // re-use | |
1458 | |
1459 // Loop-variant addresses. They assume post-incremented count < 0. | |
304 | 1460 Address from_element_addr(end_from, count, Address::times_ptr, 0); |
1461 Address to_element_addr(end_to, count, Address::times_ptr, 0); | |
0 | 1462 Address elem_klass_addr(elem, oopDesc::klass_offset_in_bytes()); |
1463 | |
1464 // Copy from low to high addresses, indexed from the end of each array. | |
2324 | 1465 gen_write_ref_array_pre_barrier(to, count, dest_uninitialized); |
304 | 1466 __ lea(end_from, end_from_addr); |
1467 __ lea(end_to, end_to_addr); | |
0 | 1468 assert(length == count, ""); // else fix next line: |
304 | 1469 __ negptr(count); // negate and test the length |
0 | 1470 __ jccb(Assembler::notZero, L_load_element); |
1471 | |
1472 // Empty array: Nothing to do. | |
304 | 1473 __ xorptr(rax, rax); // return 0 on (trivial) success |
0 | 1474 __ jmp(L_done); |
1475 | |
1476 // ======== begin loop ======== | |
1477 // (Loop is rotated; its entry is L_load_element.) | |
1478 // Loop control: | |
1479 // for (count = -count; count != 0; count++) | |
1480 // Base pointers src, dst are biased by 8*count,to last element. | |
1365 | 1481 __ align(OptoLoopAlignment); |
0 | 1482 |
1483 __ BIND(L_store_element); | |
304 | 1484 __ movptr(to_element_addr, elem); // store the oop |
0 | 1485 __ increment(count); // increment the count toward zero |
1486 __ jccb(Assembler::zero, L_do_card_marks); | |
1487 | |
1488 // ======== loop entry is here ======== | |
1489 __ BIND(L_load_element); | |
304 | 1490 __ movptr(elem, from_element_addr); // load the oop |
1491 __ testptr(elem, elem); | |
0 | 1492 __ jccb(Assembler::zero, L_store_element); |
1493 | |
1494 // (Could do a trick here: Remember last successful non-null | |
1495 // element stored and make a quick oop equality check on it.) | |
1496 | |
304 | 1497 __ movptr(elem_klass, elem_klass_addr); // query the object klass |
0 | 1498 generate_type_check(elem_klass, ckoff_arg, ckval_arg, temp, |
1499 &L_store_element, NULL); | |
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1500 // (On fall-through, we have failed the element type check.) |
0 | 1501 // ======== end loop ======== |
1502 | |
1503 // It was a real error; we must depend on the caller to finish the job. | |
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1504 // Register "count" = -1 * number of *remaining* oops, length_arg = *total* oops. |
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1505 // Emit GC store barriers for the oops we have copied (length_arg + count), |
0 | 1506 // and report their number to the caller. |
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1507 assert_different_registers(to, count, rax); |
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1508 Label L_post_barrier; |
0 | 1509 __ addl(count, length_arg); // transfers = (length - remaining) |
304 | 1510 __ movl2ptr(rax, count); // save the value |
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1511 __ notptr(rax); // report (-1^K) to caller (does not affect flags) |
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1512 __ jccb(Assembler::notZero, L_post_barrier); |
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1513 __ jmp(L_done); // K == 0, nothing was copied, skip post barrier |
0 | 1514 |
1515 // Come here on success only. | |
1516 __ BIND(L_do_card_marks); | |
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1517 __ xorptr(rax, rax); // return 0 on success |
304 | 1518 __ movl2ptr(count, length_arg); |
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1519 |
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1520 __ BIND(L_post_barrier); |
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1521 __ movptr(to, to_arg); // reload |
0 | 1522 gen_write_ref_array_post_barrier(to, count); |
1523 | |
1524 // Common exit point (success or failure). | |
1525 __ BIND(L_done); | |
304 | 1526 __ pop(rbx); |
1527 __ pop(rdi); | |
1528 __ pop(rsi); | |
0 | 1529 inc_counter_np(SharedRuntime::_checkcast_array_copy_ctr); |
1530 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
1531 __ ret(0); | |
1532 | |
1533 return start; | |
1534 } | |
1535 | |
1536 // | |
1537 // Generate 'unsafe' array copy stub | |
1538 // Though just as safe as the other stubs, it takes an unscaled | |
1539 // size_t argument instead of an element count. | |
1540 // | |
1541 // Input: | |
1542 // 4(rsp) - source array address | |
1543 // 8(rsp) - destination array address | |
1544 // 12(rsp) - byte count, can be zero | |
1545 // | |
1546 // Output: | |
1547 // rax, == 0 - success | |
1548 // rax, == -1 - need to call System.arraycopy | |
1549 // | |
1550 // Examines the alignment of the operands and dispatches | |
1551 // to a long, int, short, or byte copy loop. | |
1552 // | |
1553 address generate_unsafe_copy(const char *name, | |
1554 address byte_copy_entry, | |
1555 address short_copy_entry, | |
1556 address int_copy_entry, | |
1557 address long_copy_entry) { | |
1558 | |
1559 Label L_long_aligned, L_int_aligned, L_short_aligned; | |
1560 | |
1561 __ align(CodeEntryAlignment); | |
1562 StubCodeMark mark(this, "StubRoutines", name); | |
1563 address start = __ pc(); | |
1564 | |
1565 const Register from = rax; // source array address | |
1566 const Register to = rdx; // destination array address | |
1567 const Register count = rcx; // elements count | |
1568 | |
1569 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
304 | 1570 __ push(rsi); |
1571 __ push(rdi); | |
0 | 1572 Address from_arg(rsp, 12+ 4); // from |
1573 Address to_arg(rsp, 12+ 8); // to | |
1574 Address count_arg(rsp, 12+12); // byte count | |
1575 | |
1576 // Load up: | |
304 | 1577 __ movptr(from , from_arg); |
1578 __ movptr(to , to_arg); | |
1579 __ movl2ptr(count, count_arg); | |
0 | 1580 |
1581 // bump this on entry, not on exit: | |
1582 inc_counter_np(SharedRuntime::_unsafe_array_copy_ctr); | |
1583 | |
1584 const Register bits = rsi; | |
304 | 1585 __ mov(bits, from); |
1586 __ orptr(bits, to); | |
1587 __ orptr(bits, count); | |
0 | 1588 |
1589 __ testl(bits, BytesPerLong-1); | |
1590 __ jccb(Assembler::zero, L_long_aligned); | |
1591 | |
1592 __ testl(bits, BytesPerInt-1); | |
1593 __ jccb(Assembler::zero, L_int_aligned); | |
1594 | |
1595 __ testl(bits, BytesPerShort-1); | |
1596 __ jump_cc(Assembler::notZero, RuntimeAddress(byte_copy_entry)); | |
1597 | |
1598 __ BIND(L_short_aligned); | |
304 | 1599 __ shrptr(count, LogBytesPerShort); // size => short_count |
0 | 1600 __ movl(count_arg, count); // update 'count' |
1601 __ jump(RuntimeAddress(short_copy_entry)); | |
1602 | |
1603 __ BIND(L_int_aligned); | |
304 | 1604 __ shrptr(count, LogBytesPerInt); // size => int_count |
0 | 1605 __ movl(count_arg, count); // update 'count' |
1606 __ jump(RuntimeAddress(int_copy_entry)); | |
1607 | |
1608 __ BIND(L_long_aligned); | |
304 | 1609 __ shrptr(count, LogBytesPerLong); // size => qword_count |
0 | 1610 __ movl(count_arg, count); // update 'count' |
304 | 1611 __ pop(rdi); // Do pops here since jlong_arraycopy stub does not do it. |
1612 __ pop(rsi); | |
0 | 1613 __ jump(RuntimeAddress(long_copy_entry)); |
1614 | |
1615 return start; | |
1616 } | |
1617 | |
1618 | |
1619 // Perform range checks on the proposed arraycopy. | |
1620 // Smashes src_pos and dst_pos. (Uses them up for temps.) | |
1621 void arraycopy_range_checks(Register src, | |
1622 Register src_pos, | |
1623 Register dst, | |
1624 Register dst_pos, | |
1625 Address& length, | |
1626 Label& L_failed) { | |
1627 BLOCK_COMMENT("arraycopy_range_checks:"); | |
1628 const Register src_end = src_pos; // source array end position | |
1629 const Register dst_end = dst_pos; // destination array end position | |
1630 __ addl(src_end, length); // src_pos + length | |
1631 __ addl(dst_end, length); // dst_pos + length | |
1632 | |
1633 // if (src_pos + length > arrayOop(src)->length() ) FAIL; | |
1634 __ cmpl(src_end, Address(src, arrayOopDesc::length_offset_in_bytes())); | |
1635 __ jcc(Assembler::above, L_failed); | |
1636 | |
1637 // if (dst_pos + length > arrayOop(dst)->length() ) FAIL; | |
1638 __ cmpl(dst_end, Address(dst, arrayOopDesc::length_offset_in_bytes())); | |
1639 __ jcc(Assembler::above, L_failed); | |
1640 | |
1641 BLOCK_COMMENT("arraycopy_range_checks done"); | |
1642 } | |
1643 | |
1644 | |
1645 // | |
1646 // Generate generic array copy stubs | |
1647 // | |
1648 // Input: | |
1649 // 4(rsp) - src oop | |
1650 // 8(rsp) - src_pos | |
1651 // 12(rsp) - dst oop | |
1652 // 16(rsp) - dst_pos | |
1653 // 20(rsp) - element count | |
1654 // | |
1655 // Output: | |
1656 // rax, == 0 - success | |
1657 // rax, == -1^K - failure, where K is partial transfer count | |
1658 // | |
1659 address generate_generic_copy(const char *name, | |
1660 address entry_jbyte_arraycopy, | |
1661 address entry_jshort_arraycopy, | |
1662 address entry_jint_arraycopy, | |
1663 address entry_oop_arraycopy, | |
1664 address entry_jlong_arraycopy, | |
1665 address entry_checkcast_arraycopy) { | |
1666 Label L_failed, L_failed_0, L_objArray; | |
1667 | |
1668 { int modulus = CodeEntryAlignment; | |
1669 int target = modulus - 5; // 5 = sizeof jmp(L_failed) | |
1670 int advance = target - (__ offset() % modulus); | |
1671 if (advance < 0) advance += modulus; | |
1672 if (advance > 0) __ nop(advance); | |
1673 } | |
1674 StubCodeMark mark(this, "StubRoutines", name); | |
1675 | |
1676 // Short-hop target to L_failed. Makes for denser prologue code. | |
1677 __ BIND(L_failed_0); | |
1678 __ jmp(L_failed); | |
1679 assert(__ offset() % CodeEntryAlignment == 0, "no further alignment needed"); | |
1680 | |
1681 __ align(CodeEntryAlignment); | |
1682 address start = __ pc(); | |
1683 | |
1684 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
304 | 1685 __ push(rsi); |
1686 __ push(rdi); | |
0 | 1687 |
1688 // bump this on entry, not on exit: | |
1689 inc_counter_np(SharedRuntime::_generic_array_copy_ctr); | |
1690 | |
1691 // Input values | |
1692 Address SRC (rsp, 12+ 4); | |
1693 Address SRC_POS (rsp, 12+ 8); | |
1694 Address DST (rsp, 12+12); | |
1695 Address DST_POS (rsp, 12+16); | |
1696 Address LENGTH (rsp, 12+20); | |
1697 | |
1698 //----------------------------------------------------------------------- | |
1699 // Assembler stub will be used for this call to arraycopy | |
1700 // if the following conditions are met: | |
1701 // | |
1702 // (1) src and dst must not be null. | |
1703 // (2) src_pos must not be negative. | |
1704 // (3) dst_pos must not be negative. | |
1705 // (4) length must not be negative. | |
1706 // (5) src klass and dst klass should be the same and not NULL. | |
1707 // (6) src and dst should be arrays. | |
1708 // (7) src_pos + length must not exceed length of src. | |
1709 // (8) dst_pos + length must not exceed length of dst. | |
1710 // | |
1711 | |
1712 const Register src = rax; // source array oop | |
1713 const Register src_pos = rsi; | |
1714 const Register dst = rdx; // destination array oop | |
1715 const Register dst_pos = rdi; | |
1716 const Register length = rcx; // transfer count | |
1717 | |
1718 // if (src == NULL) return -1; | |
304 | 1719 __ movptr(src, SRC); // src oop |
1720 __ testptr(src, src); | |
0 | 1721 __ jccb(Assembler::zero, L_failed_0); |
1722 | |
1723 // if (src_pos < 0) return -1; | |
304 | 1724 __ movl2ptr(src_pos, SRC_POS); // src_pos |
0 | 1725 __ testl(src_pos, src_pos); |
1726 __ jccb(Assembler::negative, L_failed_0); | |
1727 | |
1728 // if (dst == NULL) return -1; | |
304 | 1729 __ movptr(dst, DST); // dst oop |
1730 __ testptr(dst, dst); | |
0 | 1731 __ jccb(Assembler::zero, L_failed_0); |
1732 | |
1733 // if (dst_pos < 0) return -1; | |
304 | 1734 __ movl2ptr(dst_pos, DST_POS); // dst_pos |
0 | 1735 __ testl(dst_pos, dst_pos); |
1736 __ jccb(Assembler::negative, L_failed_0); | |
1737 | |
1738 // if (length < 0) return -1; | |
304 | 1739 __ movl2ptr(length, LENGTH); // length |
0 | 1740 __ testl(length, length); |
1741 __ jccb(Assembler::negative, L_failed_0); | |
1742 | |
1743 // if (src->klass() == NULL) return -1; | |
1744 Address src_klass_addr(src, oopDesc::klass_offset_in_bytes()); | |
1745 Address dst_klass_addr(dst, oopDesc::klass_offset_in_bytes()); | |
1746 const Register rcx_src_klass = rcx; // array klass | |
304 | 1747 __ movptr(rcx_src_klass, Address(src, oopDesc::klass_offset_in_bytes())); |
0 | 1748 |
1749 #ifdef ASSERT | |
1750 // assert(src->klass() != NULL); | |
1751 BLOCK_COMMENT("assert klasses not null"); | |
1752 { Label L1, L2; | |
304 | 1753 __ testptr(rcx_src_klass, rcx_src_klass); |
0 | 1754 __ jccb(Assembler::notZero, L2); // it is broken if klass is NULL |
1755 __ bind(L1); | |
1756 __ stop("broken null klass"); | |
1757 __ bind(L2); | |
304 | 1758 __ cmpptr(dst_klass_addr, (int32_t)NULL_WORD); |
0 | 1759 __ jccb(Assembler::equal, L1); // this would be broken also |
1760 BLOCK_COMMENT("assert done"); | |
1761 } | |
1762 #endif //ASSERT | |
1763 | |
1764 // Load layout helper (32-bits) | |
1765 // | |
1766 // |array_tag| | header_size | element_type | |log2_element_size| | |
1767 // 32 30 24 16 8 2 0 | |
1768 // | |
1769 // array_tag: typeArray = 0x3, objArray = 0x2, non-array = 0x0 | |
1770 // | |
1771 | |
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1772 int lh_offset = in_bytes(Klass::layout_helper_offset()); |
0 | 1773 Address src_klass_lh_addr(rcx_src_klass, lh_offset); |
1774 | |
1775 // Handle objArrays completely differently... | |
1776 jint objArray_lh = Klass::array_layout_helper(T_OBJECT); | |
1777 __ cmpl(src_klass_lh_addr, objArray_lh); | |
1778 __ jcc(Assembler::equal, L_objArray); | |
1779 | |
1780 // if (src->klass() != dst->klass()) return -1; | |
304 | 1781 __ cmpptr(rcx_src_klass, dst_klass_addr); |
0 | 1782 __ jccb(Assembler::notEqual, L_failed_0); |
1783 | |
1784 const Register rcx_lh = rcx; // layout helper | |
1785 assert(rcx_lh == rcx_src_klass, "known alias"); | |
1786 __ movl(rcx_lh, src_klass_lh_addr); | |
1787 | |
1788 // if (!src->is_Array()) return -1; | |
1789 __ cmpl(rcx_lh, Klass::_lh_neutral_value); | |
1790 __ jcc(Assembler::greaterEqual, L_failed_0); // signed cmp | |
1791 | |
1792 // At this point, it is known to be a typeArray (array_tag 0x3). | |
1793 #ifdef ASSERT | |
1794 { Label L; | |
1795 __ cmpl(rcx_lh, (Klass::_lh_array_tag_type_value << Klass::_lh_array_tag_shift)); | |
1796 __ jcc(Assembler::greaterEqual, L); // signed cmp | |
1797 __ stop("must be a primitive array"); | |
1798 __ bind(L); | |
1799 } | |
1800 #endif | |
1801 | |
1802 assert_different_registers(src, src_pos, dst, dst_pos, rcx_lh); | |
1803 arraycopy_range_checks(src, src_pos, dst, dst_pos, LENGTH, L_failed); | |
1804 | |
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1805 // TypeArrayKlass |
0 | 1806 // |
1807 // src_addr = (src + array_header_in_bytes()) + (src_pos << log2elemsize); | |
1808 // dst_addr = (dst + array_header_in_bytes()) + (dst_pos << log2elemsize); | |
1809 // | |
1810 const Register rsi_offset = rsi; // array offset | |
1811 const Register src_array = src; // src array offset | |
1812 const Register dst_array = dst; // dst array offset | |
1813 const Register rdi_elsize = rdi; // log2 element size | |
1814 | |
304 | 1815 __ mov(rsi_offset, rcx_lh); |
1816 __ shrptr(rsi_offset, Klass::_lh_header_size_shift); | |
1817 __ andptr(rsi_offset, Klass::_lh_header_size_mask); // array_offset | |
1818 __ addptr(src_array, rsi_offset); // src array offset | |
1819 __ addptr(dst_array, rsi_offset); // dst array offset | |
1820 __ andptr(rcx_lh, Klass::_lh_log2_element_size_mask); // log2 elsize | |
0 | 1821 |
1822 // next registers should be set before the jump to corresponding stub | |
1823 const Register from = src; // source array address | |
1824 const Register to = dst; // destination array address | |
1825 const Register count = rcx; // elements count | |
1826 // some of them should be duplicated on stack | |
1827 #define FROM Address(rsp, 12+ 4) | |
1828 #define TO Address(rsp, 12+ 8) // Not used now | |
1829 #define COUNT Address(rsp, 12+12) // Only for oop arraycopy | |
1830 | |
1831 BLOCK_COMMENT("scale indexes to element size"); | |
304 | 1832 __ movl2ptr(rsi, SRC_POS); // src_pos |
1833 __ shlptr(rsi); // src_pos << rcx (log2 elsize) | |
0 | 1834 assert(src_array == from, ""); |
304 | 1835 __ addptr(from, rsi); // from = src_array + SRC_POS << log2 elsize |
1836 __ movl2ptr(rdi, DST_POS); // dst_pos | |
1837 __ shlptr(rdi); // dst_pos << rcx (log2 elsize) | |
0 | 1838 assert(dst_array == to, ""); |
304 | 1839 __ addptr(to, rdi); // to = dst_array + DST_POS << log2 elsize |
1840 __ movptr(FROM, from); // src_addr | |
1841 __ mov(rdi_elsize, rcx_lh); // log2 elsize | |
1842 __ movl2ptr(count, LENGTH); // elements count | |
0 | 1843 |
1844 BLOCK_COMMENT("choose copy loop based on element size"); | |
1845 __ cmpl(rdi_elsize, 0); | |
1846 | |
1847 __ jump_cc(Assembler::equal, RuntimeAddress(entry_jbyte_arraycopy)); | |
1848 __ cmpl(rdi_elsize, LogBytesPerShort); | |
1849 __ jump_cc(Assembler::equal, RuntimeAddress(entry_jshort_arraycopy)); | |
1850 __ cmpl(rdi_elsize, LogBytesPerInt); | |
1851 __ jump_cc(Assembler::equal, RuntimeAddress(entry_jint_arraycopy)); | |
1852 #ifdef ASSERT | |
1853 __ cmpl(rdi_elsize, LogBytesPerLong); | |
1854 __ jccb(Assembler::notEqual, L_failed); | |
1855 #endif | |
304 | 1856 __ pop(rdi); // Do pops here since jlong_arraycopy stub does not do it. |
1857 __ pop(rsi); | |
0 | 1858 __ jump(RuntimeAddress(entry_jlong_arraycopy)); |
1859 | |
1860 __ BIND(L_failed); | |
304 | 1861 __ xorptr(rax, rax); |
1862 __ notptr(rax); // return -1 | |
1863 __ pop(rdi); | |
1864 __ pop(rsi); | |
0 | 1865 __ leave(); // required for proper stackwalking of RuntimeStub frame |
1866 __ ret(0); | |
1867 | |
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1868 // ObjArrayKlass |
0 | 1869 __ BIND(L_objArray); |
1870 // live at this point: rcx_src_klass, src[_pos], dst[_pos] | |
1871 | |
1872 Label L_plain_copy, L_checkcast_copy; | |
1873 // test array classes for subtyping | |
304 | 1874 __ cmpptr(rcx_src_klass, dst_klass_addr); // usual case is exact equality |
0 | 1875 __ jccb(Assembler::notEqual, L_checkcast_copy); |
1876 | |
1877 // Identically typed arrays can be copied without element-wise checks. | |
1878 assert_different_registers(src, src_pos, dst, dst_pos, rcx_src_klass); | |
1879 arraycopy_range_checks(src, src_pos, dst, dst_pos, LENGTH, L_failed); | |
1880 | |
1881 __ BIND(L_plain_copy); | |
304 | 1882 __ movl2ptr(count, LENGTH); // elements count |
1883 __ movl2ptr(src_pos, SRC_POS); // reload src_pos | |
1884 __ lea(from, Address(src, src_pos, Address::times_ptr, | |
1885 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // src_addr | |
1886 __ movl2ptr(dst_pos, DST_POS); // reload dst_pos | |
1887 __ lea(to, Address(dst, dst_pos, Address::times_ptr, | |
1888 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); // dst_addr | |
1889 __ movptr(FROM, from); // src_addr | |
1890 __ movptr(TO, to); // dst_addr | |
0 | 1891 __ movl(COUNT, count); // count |
1892 __ jump(RuntimeAddress(entry_oop_arraycopy)); | |
1893 | |
1894 __ BIND(L_checkcast_copy); | |
1895 // live at this point: rcx_src_klass, dst[_pos], src[_pos] | |
1896 { | |
1897 // Handy offsets: | |
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1898 int ek_offset = in_bytes(ObjArrayKlass::element_klass_offset()); |
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1899 int sco_offset = in_bytes(Klass::super_check_offset_offset()); |
0 | 1900 |
1901 Register rsi_dst_klass = rsi; | |
1902 Register rdi_temp = rdi; | |
1903 assert(rsi_dst_klass == src_pos, "expected alias w/ src_pos"); | |
1904 assert(rdi_temp == dst_pos, "expected alias w/ dst_pos"); | |
1905 Address dst_klass_lh_addr(rsi_dst_klass, lh_offset); | |
1906 | |
1907 // Before looking at dst.length, make sure dst is also an objArray. | |
304 | 1908 __ movptr(rsi_dst_klass, dst_klass_addr); |
0 | 1909 __ cmpl(dst_klass_lh_addr, objArray_lh); |
1910 __ jccb(Assembler::notEqual, L_failed); | |
1911 | |
1912 // It is safe to examine both src.length and dst.length. | |
304 | 1913 __ movl2ptr(src_pos, SRC_POS); // reload rsi |
0 | 1914 arraycopy_range_checks(src, src_pos, dst, dst_pos, LENGTH, L_failed); |
1915 // (Now src_pos and dst_pos are killed, but not src and dst.) | |
1916 | |
1917 // We'll need this temp (don't forget to pop it after the type check). | |
304 | 1918 __ push(rbx); |
0 | 1919 Register rbx_src_klass = rbx; |
1920 | |
304 | 1921 __ mov(rbx_src_klass, rcx_src_klass); // spill away from rcx |
1922 __ movptr(rsi_dst_klass, dst_klass_addr); | |
0 | 1923 Address super_check_offset_addr(rsi_dst_klass, sco_offset); |
1924 Label L_fail_array_check; | |
1925 generate_type_check(rbx_src_klass, | |
1926 super_check_offset_addr, dst_klass_addr, | |
1927 rdi_temp, NULL, &L_fail_array_check); | |
1928 // (On fall-through, we have passed the array type check.) | |
304 | 1929 __ pop(rbx); |
0 | 1930 __ jmp(L_plain_copy); |
1931 | |
1932 __ BIND(L_fail_array_check); | |
1933 // Reshuffle arguments so we can call checkcast_arraycopy: | |
1934 | |
1935 // match initial saves for checkcast_arraycopy | |
304 | 1936 // push(rsi); // already done; see above |
1937 // push(rdi); // already done; see above | |
1938 // push(rbx); // already done; see above | |
0 | 1939 |
1940 // Marshal outgoing arguments now, freeing registers. | |
1941 Address from_arg(rsp, 16+ 4); // from | |
1942 Address to_arg(rsp, 16+ 8); // to | |
1943 Address length_arg(rsp, 16+12); // elements count | |
1944 Address ckoff_arg(rsp, 16+16); // super_check_offset | |
1945 Address ckval_arg(rsp, 16+20); // super_klass | |
1946 | |
1947 Address SRC_POS_arg(rsp, 16+ 8); | |
1948 Address DST_POS_arg(rsp, 16+16); | |
1949 Address LENGTH_arg(rsp, 16+20); | |
1950 // push rbx, changed the incoming offsets (why not just use rbp,??) | |
1951 // assert(SRC_POS_arg.disp() == SRC_POS.disp() + 4, ""); | |
1952 | |
304 | 1953 __ movptr(rbx, Address(rsi_dst_klass, ek_offset)); |
1954 __ movl2ptr(length, LENGTH_arg); // reload elements count | |
1955 __ movl2ptr(src_pos, SRC_POS_arg); // reload src_pos | |
1956 __ movl2ptr(dst_pos, DST_POS_arg); // reload dst_pos | |
0 | 1957 |
304 | 1958 __ movptr(ckval_arg, rbx); // destination element type |
0 | 1959 __ movl(rbx, Address(rbx, sco_offset)); |
1960 __ movl(ckoff_arg, rbx); // corresponding class check offset | |
1961 | |
1962 __ movl(length_arg, length); // outgoing length argument | |
1963 | |
304 | 1964 __ lea(from, Address(src, src_pos, Address::times_ptr, |
0 | 1965 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
304 | 1966 __ movptr(from_arg, from); |
0 | 1967 |
304 | 1968 __ lea(to, Address(dst, dst_pos, Address::times_ptr, |
0 | 1969 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
304 | 1970 __ movptr(to_arg, to); |
0 | 1971 __ jump(RuntimeAddress(entry_checkcast_arraycopy)); |
1972 } | |
1973 | |
1974 return start; | |
1975 } | |
1976 | |
1977 void generate_arraycopy_stubs() { | |
1978 address entry; | |
1979 address entry_jbyte_arraycopy; | |
1980 address entry_jshort_arraycopy; | |
1981 address entry_jint_arraycopy; | |
1982 address entry_oop_arraycopy; | |
1983 address entry_jlong_arraycopy; | |
1984 address entry_checkcast_arraycopy; | |
1985 | |
1986 StubRoutines::_arrayof_jbyte_disjoint_arraycopy = | |
1987 generate_disjoint_copy(T_BYTE, true, Address::times_1, &entry, | |
1988 "arrayof_jbyte_disjoint_arraycopy"); | |
1989 StubRoutines::_arrayof_jbyte_arraycopy = | |
1990 generate_conjoint_copy(T_BYTE, true, Address::times_1, entry, | |
1991 NULL, "arrayof_jbyte_arraycopy"); | |
1992 StubRoutines::_jbyte_disjoint_arraycopy = | |
1993 generate_disjoint_copy(T_BYTE, false, Address::times_1, &entry, | |
1994 "jbyte_disjoint_arraycopy"); | |
1995 StubRoutines::_jbyte_arraycopy = | |
1996 generate_conjoint_copy(T_BYTE, false, Address::times_1, entry, | |
1997 &entry_jbyte_arraycopy, "jbyte_arraycopy"); | |
1998 | |
1999 StubRoutines::_arrayof_jshort_disjoint_arraycopy = | |
2000 generate_disjoint_copy(T_SHORT, true, Address::times_2, &entry, | |
2001 "arrayof_jshort_disjoint_arraycopy"); | |
2002 StubRoutines::_arrayof_jshort_arraycopy = | |
2003 generate_conjoint_copy(T_SHORT, true, Address::times_2, entry, | |
2004 NULL, "arrayof_jshort_arraycopy"); | |
2005 StubRoutines::_jshort_disjoint_arraycopy = | |
2006 generate_disjoint_copy(T_SHORT, false, Address::times_2, &entry, | |
2007 "jshort_disjoint_arraycopy"); | |
2008 StubRoutines::_jshort_arraycopy = | |
2009 generate_conjoint_copy(T_SHORT, false, Address::times_2, entry, | |
2010 &entry_jshort_arraycopy, "jshort_arraycopy"); | |
2011 | |
2012 // Next arrays are always aligned on 4 bytes at least. | |
2013 StubRoutines::_jint_disjoint_arraycopy = | |
2014 generate_disjoint_copy(T_INT, true, Address::times_4, &entry, | |
2015 "jint_disjoint_arraycopy"); | |
2016 StubRoutines::_jint_arraycopy = | |
2017 generate_conjoint_copy(T_INT, true, Address::times_4, entry, | |
2018 &entry_jint_arraycopy, "jint_arraycopy"); | |
2019 | |
2020 StubRoutines::_oop_disjoint_arraycopy = | |
304 | 2021 generate_disjoint_copy(T_OBJECT, true, Address::times_ptr, &entry, |
0 | 2022 "oop_disjoint_arraycopy"); |
2023 StubRoutines::_oop_arraycopy = | |
304 | 2024 generate_conjoint_copy(T_OBJECT, true, Address::times_ptr, entry, |
0 | 2025 &entry_oop_arraycopy, "oop_arraycopy"); |
2026 | |
2324 | 2027 StubRoutines::_oop_disjoint_arraycopy_uninit = |
2028 generate_disjoint_copy(T_OBJECT, true, Address::times_ptr, &entry, | |
2029 "oop_disjoint_arraycopy_uninit", | |
2030 /*dest_uninitialized*/true); | |
2031 StubRoutines::_oop_arraycopy_uninit = | |
2032 generate_conjoint_copy(T_OBJECT, true, Address::times_ptr, entry, | |
2033 NULL, "oop_arraycopy_uninit", | |
2034 /*dest_uninitialized*/true); | |
2035 | |
0 | 2036 StubRoutines::_jlong_disjoint_arraycopy = |
2037 generate_disjoint_long_copy(&entry, "jlong_disjoint_arraycopy"); | |
2038 StubRoutines::_jlong_arraycopy = | |
2039 generate_conjoint_long_copy(entry, &entry_jlong_arraycopy, | |
2040 "jlong_arraycopy"); | |
2041 | |
1763 | 2042 StubRoutines::_jbyte_fill = generate_fill(T_BYTE, false, "jbyte_fill"); |
2043 StubRoutines::_jshort_fill = generate_fill(T_SHORT, false, "jshort_fill"); | |
2044 StubRoutines::_jint_fill = generate_fill(T_INT, false, "jint_fill"); | |
2045 StubRoutines::_arrayof_jbyte_fill = generate_fill(T_BYTE, true, "arrayof_jbyte_fill"); | |
2046 StubRoutines::_arrayof_jshort_fill = generate_fill(T_SHORT, true, "arrayof_jshort_fill"); | |
2047 StubRoutines::_arrayof_jint_fill = generate_fill(T_INT, true, "arrayof_jint_fill"); | |
2048 | |
2324 | 2049 StubRoutines::_arrayof_jint_disjoint_arraycopy = StubRoutines::_jint_disjoint_arraycopy; |
2050 StubRoutines::_arrayof_oop_disjoint_arraycopy = StubRoutines::_oop_disjoint_arraycopy; | |
2051 StubRoutines::_arrayof_oop_disjoint_arraycopy_uninit = StubRoutines::_oop_disjoint_arraycopy_uninit; | |
2052 StubRoutines::_arrayof_jlong_disjoint_arraycopy = StubRoutines::_jlong_disjoint_arraycopy; | |
0 | 2053 |
2324 | 2054 StubRoutines::_arrayof_jint_arraycopy = StubRoutines::_jint_arraycopy; |
2055 StubRoutines::_arrayof_oop_arraycopy = StubRoutines::_oop_arraycopy; | |
2056 StubRoutines::_arrayof_oop_arraycopy_uninit = StubRoutines::_oop_arraycopy_uninit; | |
2057 StubRoutines::_arrayof_jlong_arraycopy = StubRoutines::_jlong_arraycopy; | |
0 | 2058 |
2059 StubRoutines::_checkcast_arraycopy = | |
2324 | 2060 generate_checkcast_copy("checkcast_arraycopy", &entry_checkcast_arraycopy); |
2061 StubRoutines::_checkcast_arraycopy_uninit = | |
2062 generate_checkcast_copy("checkcast_arraycopy_uninit", NULL, /*dest_uninitialized*/true); | |
0 | 2063 |
2064 StubRoutines::_unsafe_arraycopy = | |
2065 generate_unsafe_copy("unsafe_arraycopy", | |
2066 entry_jbyte_arraycopy, | |
2067 entry_jshort_arraycopy, | |
2068 entry_jint_arraycopy, | |
2069 entry_jlong_arraycopy); | |
2070 | |
2071 StubRoutines::_generic_arraycopy = | |
2072 generate_generic_copy("generic_arraycopy", | |
2073 entry_jbyte_arraycopy, | |
2074 entry_jshort_arraycopy, | |
2075 entry_jint_arraycopy, | |
2076 entry_oop_arraycopy, | |
2077 entry_jlong_arraycopy, | |
2078 entry_checkcast_arraycopy); | |
2079 } | |
2080 | |
1174
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2081 void generate_math_stubs() { |
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2082 { |
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2083 StubCodeMark mark(this, "StubRoutines", "log"); |
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2084 StubRoutines::_intrinsic_log = (double (*)(double)) __ pc(); |
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2085 |
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2086 __ fld_d(Address(rsp, 4)); |
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2087 __ flog(); |
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2088 __ ret(0); |
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2089 } |
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2090 { |
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2091 StubCodeMark mark(this, "StubRoutines", "log10"); |
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2092 StubRoutines::_intrinsic_log10 = (double (*)(double)) __ pc(); |
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2093 |
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2094 __ fld_d(Address(rsp, 4)); |
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2095 __ flog10(); |
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2096 __ ret(0); |
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2097 } |
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2098 { |
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2099 StubCodeMark mark(this, "StubRoutines", "sin"); |
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2100 StubRoutines::_intrinsic_sin = (double (*)(double)) __ pc(); |
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2101 |
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2102 __ fld_d(Address(rsp, 4)); |
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|
2103 __ trigfunc('s'); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
parents:
845
diff
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|
2104 __ ret(0); |
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6849984: Value methods for platform dependent math functions constant fold incorrectly
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parents:
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diff
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|
2105 } |
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parents:
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diff
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|
2106 { |
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diff
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|
2107 StubCodeMark mark(this, "StubRoutines", "cos"); |
ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
never
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845
diff
changeset
|
2108 StubRoutines::_intrinsic_cos = (double (*)(double)) __ pc(); |
ddb7834449d0
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never
parents:
845
diff
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|
2109 |
ddb7834449d0
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parents:
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diff
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|
2110 __ fld_d(Address(rsp, 4)); |
ddb7834449d0
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parents:
845
diff
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|
2111 __ trigfunc('c'); |
ddb7834449d0
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parents:
845
diff
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|
2112 __ ret(0); |
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parents:
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diff
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|
2113 } |
ddb7834449d0
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parents:
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diff
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|
2114 { |
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|
2115 StubCodeMark mark(this, "StubRoutines", "tan"); |
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diff
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|
2116 StubRoutines::_intrinsic_tan = (double (*)(double)) __ pc(); |
ddb7834449d0
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|
2117 |
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|
2118 __ fld_d(Address(rsp, 4)); |
ddb7834449d0
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diff
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|
2119 __ trigfunc('t'); |
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diff
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|
2120 __ ret(0); |
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|
2121 } |
6084
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
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4771
diff
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|
2122 { |
6759698e3140
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diff
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|
2123 StubCodeMark mark(this, "StubRoutines", "exp"); |
6759698e3140
7133857: exp() and pow() should use the x87 ISA on x86
roland
parents:
4771
diff
changeset
|
2124 StubRoutines::_intrinsic_exp = (double (*)(double)) __ pc(); |
1174
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|
2125 |
6084
6759698e3140
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diff
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|
2126 __ fld_d(Address(rsp, 4)); |
6759698e3140
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roland
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4771
diff
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|
2127 __ exp_with_fallback(0); |
6759698e3140
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roland
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4771
diff
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|
2128 __ ret(0); |
6759698e3140
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diff
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|
2129 } |
6759698e3140
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4771
diff
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|
2130 { |
6759698e3140
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diff
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|
2131 StubCodeMark mark(this, "StubRoutines", "pow"); |
6759698e3140
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4771
diff
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|
2132 StubRoutines::_intrinsic_pow = (double (*)(double,double)) __ pc(); |
6759698e3140
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diff
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|
2133 |
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|
2134 __ fld_d(Address(rsp, 12)); |
6759698e3140
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diff
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|
2135 __ fld_d(Address(rsp, 4)); |
6759698e3140
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4771
diff
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|
2136 __ pow_with_fallback(0); |
6759698e3140
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diff
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|
2137 __ ret(0); |
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|
2138 } |
1174
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|
2139 } |
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|
2140 |
6894 | 2141 // AES intrinsic stubs |
2142 enum {AESBlockSize = 16}; | |
2143 | |
2144 address generate_key_shuffle_mask() { | |
2145 __ align(16); | |
2146 StubCodeMark mark(this, "StubRoutines", "key_shuffle_mask"); | |
2147 address start = __ pc(); | |
2148 __ emit_data(0x00010203, relocInfo::none, 0 ); | |
2149 __ emit_data(0x04050607, relocInfo::none, 0 ); | |
2150 __ emit_data(0x08090a0b, relocInfo::none, 0 ); | |
2151 __ emit_data(0x0c0d0e0f, relocInfo::none, 0 ); | |
2152 return start; | |
2153 } | |
2154 | |
2155 // Utility routine for loading a 128-bit key word in little endian format | |
2156 // can optionally specify that the shuffle mask is already in an xmmregister | |
2157 void load_key(XMMRegister xmmdst, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) { | |
2158 __ movdqu(xmmdst, Address(key, offset)); | |
2159 if (xmm_shuf_mask != NULL) { | |
2160 __ pshufb(xmmdst, xmm_shuf_mask); | |
2161 } else { | |
2162 __ pshufb(xmmdst, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
2163 } | |
2164 } | |
2165 | |
2166 // aesenc using specified key+offset | |
2167 // can optionally specify that the shuffle mask is already in an xmmregister | |
2168 void aes_enc_key(XMMRegister xmmdst, XMMRegister xmmtmp, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) { | |
2169 load_key(xmmtmp, key, offset, xmm_shuf_mask); | |
2170 __ aesenc(xmmdst, xmmtmp); | |
2171 } | |
2172 | |
2173 // aesdec using specified key+offset | |
2174 // can optionally specify that the shuffle mask is already in an xmmregister | |
2175 void aes_dec_key(XMMRegister xmmdst, XMMRegister xmmtmp, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) { | |
2176 load_key(xmmtmp, key, offset, xmm_shuf_mask); | |
2177 __ aesdec(xmmdst, xmmtmp); | |
2178 } | |
2179 | |
2180 | |
2181 // Arguments: | |
2182 // | |
2183 // Inputs: | |
2184 // c_rarg0 - source byte array address | |
2185 // c_rarg1 - destination byte array address | |
2186 // c_rarg2 - K (key) in little endian int array | |
2187 // | |
2188 address generate_aescrypt_encryptBlock() { | |
7427 | 2189 assert(UseAES, "need AES instructions and misaligned SSE support"); |
6894 | 2190 __ align(CodeEntryAlignment); |
2191 StubCodeMark mark(this, "StubRoutines", "aescrypt_encryptBlock"); | |
2192 Label L_doLast; | |
2193 address start = __ pc(); | |
2194 | |
7427 | 2195 const Register from = rdx; // source array address |
6894 | 2196 const Register to = rdx; // destination array address |
2197 const Register key = rcx; // key array address | |
2198 const Register keylen = rax; | |
2199 const Address from_param(rbp, 8+0); | |
2200 const Address to_param (rbp, 8+4); | |
2201 const Address key_param (rbp, 8+8); | |
2202 | |
2203 const XMMRegister xmm_result = xmm0; | |
7427 | 2204 const XMMRegister xmm_key_shuf_mask = xmm1; |
2205 const XMMRegister xmm_temp1 = xmm2; | |
2206 const XMMRegister xmm_temp2 = xmm3; | |
2207 const XMMRegister xmm_temp3 = xmm4; | |
2208 const XMMRegister xmm_temp4 = xmm5; | |
2209 | |
2210 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2211 __ movptr(from, from_param); | |
2212 __ movptr(key, key_param); | |
2213 | |
2214 // keylen could be only {11, 13, 15} * 4 = {44, 52, 60} | |
6894 | 2215 __ movl(keylen, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); |
2216 | |
2217 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
2218 __ movdqu(xmm_result, Address(from, 0)); // get 16 bytes of input | |
7427 | 2219 __ movptr(to, to_param); |
6894 | 2220 |
2221 // For encryption, the java expanded key ordering is just what we need | |
2222 | |
7427 | 2223 load_key(xmm_temp1, key, 0x00, xmm_key_shuf_mask); |
2224 __ pxor(xmm_result, xmm_temp1); | |
2225 | |
2226 load_key(xmm_temp1, key, 0x10, xmm_key_shuf_mask); | |
2227 load_key(xmm_temp2, key, 0x20, xmm_key_shuf_mask); | |
2228 load_key(xmm_temp3, key, 0x30, xmm_key_shuf_mask); | |
2229 load_key(xmm_temp4, key, 0x40, xmm_key_shuf_mask); | |
2230 | |
2231 __ aesenc(xmm_result, xmm_temp1); | |
2232 __ aesenc(xmm_result, xmm_temp2); | |
2233 __ aesenc(xmm_result, xmm_temp3); | |
2234 __ aesenc(xmm_result, xmm_temp4); | |
2235 | |
2236 load_key(xmm_temp1, key, 0x50, xmm_key_shuf_mask); | |
2237 load_key(xmm_temp2, key, 0x60, xmm_key_shuf_mask); | |
2238 load_key(xmm_temp3, key, 0x70, xmm_key_shuf_mask); | |
2239 load_key(xmm_temp4, key, 0x80, xmm_key_shuf_mask); | |
2240 | |
2241 __ aesenc(xmm_result, xmm_temp1); | |
2242 __ aesenc(xmm_result, xmm_temp2); | |
2243 __ aesenc(xmm_result, xmm_temp3); | |
2244 __ aesenc(xmm_result, xmm_temp4); | |
2245 | |
2246 load_key(xmm_temp1, key, 0x90, xmm_key_shuf_mask); | |
2247 load_key(xmm_temp2, key, 0xa0, xmm_key_shuf_mask); | |
2248 | |
2249 __ cmpl(keylen, 44); | |
2250 __ jccb(Assembler::equal, L_doLast); | |
2251 | |
2252 __ aesenc(xmm_result, xmm_temp1); | |
2253 __ aesenc(xmm_result, xmm_temp2); | |
2254 | |
2255 load_key(xmm_temp1, key, 0xb0, xmm_key_shuf_mask); | |
2256 load_key(xmm_temp2, key, 0xc0, xmm_key_shuf_mask); | |
2257 | |
2258 __ cmpl(keylen, 52); | |
2259 __ jccb(Assembler::equal, L_doLast); | |
2260 | |
2261 __ aesenc(xmm_result, xmm_temp1); | |
2262 __ aesenc(xmm_result, xmm_temp2); | |
2263 | |
2264 load_key(xmm_temp1, key, 0xd0, xmm_key_shuf_mask); | |
2265 load_key(xmm_temp2, key, 0xe0, xmm_key_shuf_mask); | |
6894 | 2266 |
2267 __ BIND(L_doLast); | |
7427 | 2268 __ aesenc(xmm_result, xmm_temp1); |
2269 __ aesenclast(xmm_result, xmm_temp2); | |
6894 | 2270 __ movdqu(Address(to, 0), xmm_result); // store the result |
2271 __ xorptr(rax, rax); // return 0 | |
2272 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
2273 __ ret(0); | |
2274 | |
2275 return start; | |
2276 } | |
2277 | |
2278 | |
2279 // Arguments: | |
2280 // | |
2281 // Inputs: | |
2282 // c_rarg0 - source byte array address | |
2283 // c_rarg1 - destination byte array address | |
2284 // c_rarg2 - K (key) in little endian int array | |
2285 // | |
2286 address generate_aescrypt_decryptBlock() { | |
7427 | 2287 assert(UseAES, "need AES instructions and misaligned SSE support"); |
6894 | 2288 __ align(CodeEntryAlignment); |
2289 StubCodeMark mark(this, "StubRoutines", "aescrypt_decryptBlock"); | |
2290 Label L_doLast; | |
2291 address start = __ pc(); | |
2292 | |
7427 | 2293 const Register from = rdx; // source array address |
6894 | 2294 const Register to = rdx; // destination array address |
2295 const Register key = rcx; // key array address | |
2296 const Register keylen = rax; | |
2297 const Address from_param(rbp, 8+0); | |
2298 const Address to_param (rbp, 8+4); | |
2299 const Address key_param (rbp, 8+8); | |
2300 | |
2301 const XMMRegister xmm_result = xmm0; | |
7427 | 2302 const XMMRegister xmm_key_shuf_mask = xmm1; |
2303 const XMMRegister xmm_temp1 = xmm2; | |
2304 const XMMRegister xmm_temp2 = xmm3; | |
2305 const XMMRegister xmm_temp3 = xmm4; | |
2306 const XMMRegister xmm_temp4 = xmm5; | |
6894 | 2307 |
2308 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
7427 | 2309 __ movptr(from, from_param); |
2310 __ movptr(key, key_param); | |
2311 | |
2312 // keylen could be only {11, 13, 15} * 4 = {44, 52, 60} | |
6894 | 2313 __ movl(keylen, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); |
2314 | |
2315 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
2316 __ movdqu(xmm_result, Address(from, 0)); | |
7427 | 2317 __ movptr(to, to_param); |
6894 | 2318 |
2319 // for decryption java expanded key ordering is rotated one position from what we want | |
2320 // so we start from 0x10 here and hit 0x00 last | |
2321 // we don't know if the key is aligned, hence not using load-execute form | |
7427 | 2322 load_key(xmm_temp1, key, 0x10, xmm_key_shuf_mask); |
2323 load_key(xmm_temp2, key, 0x20, xmm_key_shuf_mask); | |
2324 load_key(xmm_temp3, key, 0x30, xmm_key_shuf_mask); | |
2325 load_key(xmm_temp4, key, 0x40, xmm_key_shuf_mask); | |
2326 | |
2327 __ pxor (xmm_result, xmm_temp1); | |
2328 __ aesdec(xmm_result, xmm_temp2); | |
2329 __ aesdec(xmm_result, xmm_temp3); | |
2330 __ aesdec(xmm_result, xmm_temp4); | |
2331 | |
2332 load_key(xmm_temp1, key, 0x50, xmm_key_shuf_mask); | |
2333 load_key(xmm_temp2, key, 0x60, xmm_key_shuf_mask); | |
2334 load_key(xmm_temp3, key, 0x70, xmm_key_shuf_mask); | |
2335 load_key(xmm_temp4, key, 0x80, xmm_key_shuf_mask); | |
2336 | |
2337 __ aesdec(xmm_result, xmm_temp1); | |
2338 __ aesdec(xmm_result, xmm_temp2); | |
2339 __ aesdec(xmm_result, xmm_temp3); | |
2340 __ aesdec(xmm_result, xmm_temp4); | |
2341 | |
2342 load_key(xmm_temp1, key, 0x90, xmm_key_shuf_mask); | |
2343 load_key(xmm_temp2, key, 0xa0, xmm_key_shuf_mask); | |
2344 load_key(xmm_temp3, key, 0x00, xmm_key_shuf_mask); | |
2345 | |
2346 __ cmpl(keylen, 44); | |
2347 __ jccb(Assembler::equal, L_doLast); | |
2348 | |
2349 __ aesdec(xmm_result, xmm_temp1); | |
2350 __ aesdec(xmm_result, xmm_temp2); | |
2351 | |
2352 load_key(xmm_temp1, key, 0xb0, xmm_key_shuf_mask); | |
2353 load_key(xmm_temp2, key, 0xc0, xmm_key_shuf_mask); | |
2354 | |
2355 __ cmpl(keylen, 52); | |
2356 __ jccb(Assembler::equal, L_doLast); | |
2357 | |
2358 __ aesdec(xmm_result, xmm_temp1); | |
2359 __ aesdec(xmm_result, xmm_temp2); | |
2360 | |
2361 load_key(xmm_temp1, key, 0xd0, xmm_key_shuf_mask); | |
2362 load_key(xmm_temp2, key, 0xe0, xmm_key_shuf_mask); | |
6894 | 2363 |
2364 __ BIND(L_doLast); | |
7427 | 2365 __ aesdec(xmm_result, xmm_temp1); |
2366 __ aesdec(xmm_result, xmm_temp2); | |
2367 | |
6894 | 2368 // for decryption the aesdeclast operation is always on key+0x00 |
7427 | 2369 __ aesdeclast(xmm_result, xmm_temp3); |
6894 | 2370 __ movdqu(Address(to, 0), xmm_result); // store the result |
2371 __ xorptr(rax, rax); // return 0 | |
2372 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
2373 __ ret(0); | |
2374 | |
2375 return start; | |
2376 } | |
2377 | |
2378 void handleSOERegisters(bool saving) { | |
2379 const int saveFrameSizeInBytes = 4 * wordSize; | |
2380 const Address saved_rbx (rbp, -3 * wordSize); | |
2381 const Address saved_rsi (rbp, -2 * wordSize); | |
2382 const Address saved_rdi (rbp, -1 * wordSize); | |
2383 | |
2384 if (saving) { | |
2385 __ subptr(rsp, saveFrameSizeInBytes); | |
2386 __ movptr(saved_rsi, rsi); | |
2387 __ movptr(saved_rdi, rdi); | |
2388 __ movptr(saved_rbx, rbx); | |
2389 } else { | |
2390 // restoring | |
2391 __ movptr(rsi, saved_rsi); | |
2392 __ movptr(rdi, saved_rdi); | |
2393 __ movptr(rbx, saved_rbx); | |
2394 } | |
2395 } | |
2396 | |
2397 // Arguments: | |
2398 // | |
2399 // Inputs: | |
2400 // c_rarg0 - source byte array address | |
2401 // c_rarg1 - destination byte array address | |
2402 // c_rarg2 - K (key) in little endian int array | |
2403 // c_rarg3 - r vector byte array address | |
2404 // c_rarg4 - input length | |
2405 // | |
2406 address generate_cipherBlockChaining_encryptAESCrypt() { | |
7427 | 2407 assert(UseAES, "need AES instructions and misaligned SSE support"); |
6894 | 2408 __ align(CodeEntryAlignment); |
2409 StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_encryptAESCrypt"); | |
2410 address start = __ pc(); | |
2411 | |
2412 Label L_exit, L_key_192_256, L_key_256, L_loopTop_128, L_loopTop_192, L_loopTop_256; | |
2413 const Register from = rsi; // source array address | |
2414 const Register to = rdx; // destination array address | |
2415 const Register key = rcx; // key array address | |
2416 const Register rvec = rdi; // r byte array initialized from initvector array address | |
2417 // and left with the results of the last encryption block | |
2418 const Register len_reg = rbx; // src len (must be multiple of blocksize 16) | |
2419 const Register pos = rax; | |
2420 | |
2421 // xmm register assignments for the loops below | |
2422 const XMMRegister xmm_result = xmm0; | |
2423 const XMMRegister xmm_temp = xmm1; | |
2424 // first 6 keys preloaded into xmm2-xmm7 | |
2425 const int XMM_REG_NUM_KEY_FIRST = 2; | |
2426 const int XMM_REG_NUM_KEY_LAST = 7; | |
2427 const XMMRegister xmm_key0 = as_XMMRegister(XMM_REG_NUM_KEY_FIRST); | |
2428 | |
2429 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2430 handleSOERegisters(true /*saving*/); | |
2431 | |
2432 // load registers from incoming parameters | |
2433 const Address from_param(rbp, 8+0); | |
2434 const Address to_param (rbp, 8+4); | |
2435 const Address key_param (rbp, 8+8); | |
2436 const Address rvec_param (rbp, 8+12); | |
2437 const Address len_param (rbp, 8+16); | |
2438 __ movptr(from , from_param); | |
2439 __ movptr(to , to_param); | |
2440 __ movptr(key , key_param); | |
2441 __ movptr(rvec , rvec_param); | |
2442 __ movptr(len_reg , len_param); | |
2443 | |
2444 const XMMRegister xmm_key_shuf_mask = xmm_temp; // used temporarily to swap key bytes up front | |
2445 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
2446 // load up xmm regs 2 thru 7 with keys 0-5 | |
2447 for (int rnum = XMM_REG_NUM_KEY_FIRST, offset = 0x00; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
2448 load_key(as_XMMRegister(rnum), key, offset, xmm_key_shuf_mask); | |
2449 offset += 0x10; | |
2450 } | |
2451 | |
2452 __ movdqu(xmm_result, Address(rvec, 0x00)); // initialize xmm_result with r vec | |
2453 | |
2454 // now split to different paths depending on the keylen (len in ints of AESCrypt.KLE array (52=192, or 60=256)) | |
2455 __ movl(rax, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); | |
2456 __ cmpl(rax, 44); | |
2457 __ jcc(Assembler::notEqual, L_key_192_256); | |
2458 | |
2459 // 128 bit code follows here | |
7427 | 2460 __ movl(pos, 0); |
6894 | 2461 __ align(OptoLoopAlignment); |
2462 __ BIND(L_loopTop_128); | |
2463 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input | |
2464 __ pxor (xmm_result, xmm_temp); // xor with the current r vector | |
2465 | |
2466 __ pxor (xmm_result, xmm_key0); // do the aes rounds | |
2467 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
2468 __ aesenc(xmm_result, as_XMMRegister(rnum)); | |
2469 } | |
2470 for (int key_offset = 0x60; key_offset <= 0x90; key_offset += 0x10) { | |
2471 aes_enc_key(xmm_result, xmm_temp, key, key_offset); | |
2472 } | |
2473 load_key(xmm_temp, key, 0xa0); | |
2474 __ aesenclast(xmm_result, xmm_temp); | |
2475 | |
2476 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
2477 // no need to store r to memory until we exit | |
2478 __ addptr(pos, AESBlockSize); | |
2479 __ subptr(len_reg, AESBlockSize); | |
2480 __ jcc(Assembler::notEqual, L_loopTop_128); | |
2481 | |
2482 __ BIND(L_exit); | |
2483 __ movdqu(Address(rvec, 0), xmm_result); // final value of r stored in rvec of CipherBlockChaining object | |
2484 | |
2485 handleSOERegisters(false /*restoring*/); | |
2486 __ movl(rax, 0); // return 0 (why?) | |
2487 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
2488 __ ret(0); | |
2489 | |
7427 | 2490 __ BIND(L_key_192_256); |
2491 // here rax = len in ints of AESCrypt.KLE array (52=192, or 60=256) | |
6894 | 2492 __ cmpl(rax, 52); |
2493 __ jcc(Assembler::notEqual, L_key_256); | |
2494 | |
2495 // 192-bit code follows here (could be changed to use more xmm registers) | |
7427 | 2496 __ movl(pos, 0); |
2497 __ align(OptoLoopAlignment); | |
2498 __ BIND(L_loopTop_192); | |
6894 | 2499 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input |
2500 __ pxor (xmm_result, xmm_temp); // xor with the current r vector | |
2501 | |
2502 __ pxor (xmm_result, xmm_key0); // do the aes rounds | |
2503 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
2504 __ aesenc(xmm_result, as_XMMRegister(rnum)); | |
2505 } | |
2506 for (int key_offset = 0x60; key_offset <= 0xb0; key_offset += 0x10) { | |
2507 aes_enc_key(xmm_result, xmm_temp, key, key_offset); | |
2508 } | |
2509 load_key(xmm_temp, key, 0xc0); | |
2510 __ aesenclast(xmm_result, xmm_temp); | |
2511 | |
2512 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
2513 // no need to store r to memory until we exit | |
2514 __ addptr(pos, AESBlockSize); | |
2515 __ subptr(len_reg, AESBlockSize); | |
2516 __ jcc(Assembler::notEqual, L_loopTop_192); | |
2517 __ jmp(L_exit); | |
2518 | |
7427 | 2519 __ BIND(L_key_256); |
6894 | 2520 // 256-bit code follows here (could be changed to use more xmm registers) |
7427 | 2521 __ movl(pos, 0); |
2522 __ align(OptoLoopAlignment); | |
2523 __ BIND(L_loopTop_256); | |
6894 | 2524 __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input |
2525 __ pxor (xmm_result, xmm_temp); // xor with the current r vector | |
2526 | |
2527 __ pxor (xmm_result, xmm_key0); // do the aes rounds | |
2528 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
2529 __ aesenc(xmm_result, as_XMMRegister(rnum)); | |
2530 } | |
2531 for (int key_offset = 0x60; key_offset <= 0xd0; key_offset += 0x10) { | |
2532 aes_enc_key(xmm_result, xmm_temp, key, key_offset); | |
2533 } | |
2534 load_key(xmm_temp, key, 0xe0); | |
2535 __ aesenclast(xmm_result, xmm_temp); | |
2536 | |
2537 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
2538 // no need to store r to memory until we exit | |
2539 __ addptr(pos, AESBlockSize); | |
2540 __ subptr(len_reg, AESBlockSize); | |
2541 __ jcc(Assembler::notEqual, L_loopTop_256); | |
2542 __ jmp(L_exit); | |
2543 | |
2544 return start; | |
2545 } | |
2546 | |
2547 | |
2548 // CBC AES Decryption. | |
2549 // In 32-bit stub, because of lack of registers we do not try to parallelize 4 blocks at a time. | |
2550 // | |
2551 // Arguments: | |
2552 // | |
2553 // Inputs: | |
2554 // c_rarg0 - source byte array address | |
2555 // c_rarg1 - destination byte array address | |
2556 // c_rarg2 - K (key) in little endian int array | |
2557 // c_rarg3 - r vector byte array address | |
2558 // c_rarg4 - input length | |
2559 // | |
2560 | |
2561 address generate_cipherBlockChaining_decryptAESCrypt() { | |
7427 | 2562 assert(UseAES, "need AES instructions and misaligned SSE support"); |
6894 | 2563 __ align(CodeEntryAlignment); |
2564 StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_decryptAESCrypt"); | |
2565 address start = __ pc(); | |
2566 | |
2567 Label L_exit, L_key_192_256, L_key_256; | |
2568 Label L_singleBlock_loopTop_128; | |
2569 Label L_singleBlock_loopTop_192, L_singleBlock_loopTop_256; | |
2570 const Register from = rsi; // source array address | |
2571 const Register to = rdx; // destination array address | |
2572 const Register key = rcx; // key array address | |
2573 const Register rvec = rdi; // r byte array initialized from initvector array address | |
2574 // and left with the results of the last encryption block | |
2575 const Register len_reg = rbx; // src len (must be multiple of blocksize 16) | |
2576 const Register pos = rax; | |
2577 | |
2578 // xmm register assignments for the loops below | |
2579 const XMMRegister xmm_result = xmm0; | |
2580 const XMMRegister xmm_temp = xmm1; | |
2581 // first 6 keys preloaded into xmm2-xmm7 | |
2582 const int XMM_REG_NUM_KEY_FIRST = 2; | |
2583 const int XMM_REG_NUM_KEY_LAST = 7; | |
2584 const int FIRST_NON_REG_KEY_offset = 0x70; | |
2585 const XMMRegister xmm_key_first = as_XMMRegister(XMM_REG_NUM_KEY_FIRST); | |
2586 | |
2587 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2588 handleSOERegisters(true /*saving*/); | |
2589 | |
2590 // load registers from incoming parameters | |
2591 const Address from_param(rbp, 8+0); | |
2592 const Address to_param (rbp, 8+4); | |
2593 const Address key_param (rbp, 8+8); | |
2594 const Address rvec_param (rbp, 8+12); | |
2595 const Address len_param (rbp, 8+16); | |
2596 __ movptr(from , from_param); | |
2597 __ movptr(to , to_param); | |
2598 __ movptr(key , key_param); | |
2599 __ movptr(rvec , rvec_param); | |
2600 __ movptr(len_reg , len_param); | |
2601 | |
2602 // the java expanded key ordering is rotated one position from what we want | |
2603 // so we start from 0x10 here and hit 0x00 last | |
2604 const XMMRegister xmm_key_shuf_mask = xmm1; // used temporarily to swap key bytes up front | |
2605 __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); | |
2606 // load up xmm regs 2 thru 6 with first 5 keys | |
2607 for (int rnum = XMM_REG_NUM_KEY_FIRST, offset = 0x10; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
2608 load_key(as_XMMRegister(rnum), key, offset, xmm_key_shuf_mask); | |
2609 offset += 0x10; | |
2610 } | |
2611 | |
2612 // inside here, use the rvec register to point to previous block cipher | |
2613 // with which we xor at the end of each newly decrypted block | |
2614 const Register prev_block_cipher_ptr = rvec; | |
2615 | |
2616 // now split to different paths depending on the keylen (len in ints of AESCrypt.KLE array (52=192, or 60=256)) | |
2617 __ movl(rax, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); | |
2618 __ cmpl(rax, 44); | |
2619 __ jcc(Assembler::notEqual, L_key_192_256); | |
2620 | |
2621 | |
2622 // 128-bit code follows here, parallelized | |
7427 | 2623 __ movl(pos, 0); |
2624 __ align(OptoLoopAlignment); | |
2625 __ BIND(L_singleBlock_loopTop_128); | |
6894 | 2626 __ cmpptr(len_reg, 0); // any blocks left?? |
2627 __ jcc(Assembler::equal, L_exit); | |
2628 __ movdqu(xmm_result, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of cipher input | |
2629 __ pxor (xmm_result, xmm_key_first); // do the aes dec rounds | |
2630 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
2631 __ aesdec(xmm_result, as_XMMRegister(rnum)); | |
2632 } | |
2633 for (int key_offset = FIRST_NON_REG_KEY_offset; key_offset <= 0xa0; key_offset += 0x10) { // 128-bit runs up to key offset a0 | |
2634 aes_dec_key(xmm_result, xmm_temp, key, key_offset); | |
2635 } | |
2636 load_key(xmm_temp, key, 0x00); // final key is stored in java expanded array at offset 0 | |
2637 __ aesdeclast(xmm_result, xmm_temp); | |
2638 __ movdqu(xmm_temp, Address(prev_block_cipher_ptr, 0x00)); | |
2639 __ pxor (xmm_result, xmm_temp); // xor with the current r vector | |
2640 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
2641 // no need to store r to memory until we exit | |
2642 __ lea(prev_block_cipher_ptr, Address(from, pos, Address::times_1, 0)); // set up new ptr | |
2643 __ addptr(pos, AESBlockSize); | |
2644 __ subptr(len_reg, AESBlockSize); | |
2645 __ jmp(L_singleBlock_loopTop_128); | |
2646 | |
2647 | |
2648 __ BIND(L_exit); | |
2649 __ movdqu(xmm_temp, Address(prev_block_cipher_ptr, 0x00)); | |
2650 __ movptr(rvec , rvec_param); // restore this since used in loop | |
2651 __ movdqu(Address(rvec, 0), xmm_temp); // final value of r stored in rvec of CipherBlockChaining object | |
2652 handleSOERegisters(false /*restoring*/); | |
2653 __ movl(rax, 0); // return 0 (why?) | |
2654 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
2655 __ ret(0); | |
2656 | |
2657 | |
2658 __ BIND(L_key_192_256); | |
2659 // here rax = len in ints of AESCrypt.KLE array (52=192, or 60=256) | |
2660 __ cmpl(rax, 52); | |
2661 __ jcc(Assembler::notEqual, L_key_256); | |
2662 | |
2663 // 192-bit code follows here (could be optimized to use parallelism) | |
7427 | 2664 __ movl(pos, 0); |
6894 | 2665 __ align(OptoLoopAlignment); |
2666 __ BIND(L_singleBlock_loopTop_192); | |
2667 __ movdqu(xmm_result, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of cipher input | |
2668 __ pxor (xmm_result, xmm_key_first); // do the aes dec rounds | |
2669 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
2670 __ aesdec(xmm_result, as_XMMRegister(rnum)); | |
2671 } | |
2672 for (int key_offset = FIRST_NON_REG_KEY_offset; key_offset <= 0xc0; key_offset += 0x10) { // 192-bit runs up to key offset c0 | |
2673 aes_dec_key(xmm_result, xmm_temp, key, key_offset); | |
2674 } | |
2675 load_key(xmm_temp, key, 0x00); // final key is stored in java expanded array at offset 0 | |
2676 __ aesdeclast(xmm_result, xmm_temp); | |
2677 __ movdqu(xmm_temp, Address(prev_block_cipher_ptr, 0x00)); | |
2678 __ pxor (xmm_result, xmm_temp); // xor with the current r vector | |
2679 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
2680 // no need to store r to memory until we exit | |
2681 __ lea(prev_block_cipher_ptr, Address(from, pos, Address::times_1, 0)); // set up new ptr | |
2682 __ addptr(pos, AESBlockSize); | |
2683 __ subptr(len_reg, AESBlockSize); | |
2684 __ jcc(Assembler::notEqual,L_singleBlock_loopTop_192); | |
2685 __ jmp(L_exit); | |
2686 | |
2687 __ BIND(L_key_256); | |
2688 // 256-bit code follows here (could be optimized to use parallelism) | |
7427 | 2689 __ movl(pos, 0); |
6894 | 2690 __ align(OptoLoopAlignment); |
2691 __ BIND(L_singleBlock_loopTop_256); | |
2692 __ movdqu(xmm_result, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of cipher input | |
2693 __ pxor (xmm_result, xmm_key_first); // do the aes dec rounds | |
2694 for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { | |
2695 __ aesdec(xmm_result, as_XMMRegister(rnum)); | |
2696 } | |
2697 for (int key_offset = FIRST_NON_REG_KEY_offset; key_offset <= 0xe0; key_offset += 0x10) { // 256-bit runs up to key offset e0 | |
2698 aes_dec_key(xmm_result, xmm_temp, key, key_offset); | |
2699 } | |
2700 load_key(xmm_temp, key, 0x00); // final key is stored in java expanded array at offset 0 | |
2701 __ aesdeclast(xmm_result, xmm_temp); | |
2702 __ movdqu(xmm_temp, Address(prev_block_cipher_ptr, 0x00)); | |
2703 __ pxor (xmm_result, xmm_temp); // xor with the current r vector | |
2704 __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output | |
2705 // no need to store r to memory until we exit | |
2706 __ lea(prev_block_cipher_ptr, Address(from, pos, Address::times_1, 0)); // set up new ptr | |
2707 __ addptr(pos, AESBlockSize); | |
2708 __ subptr(len_reg, AESBlockSize); | |
2709 __ jcc(Assembler::notEqual,L_singleBlock_loopTop_256); | |
2710 __ jmp(L_exit); | |
2711 | |
2712 return start; | |
2713 } | |
2714 | |
11080
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2715 /** |
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2716 * Arguments: |
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2717 * |
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2718 * Inputs: |
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2719 * rsp(4) - int crc |
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2720 * rsp(8) - byte* buf |
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2721 * rsp(12) - int length |
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2722 * |
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2723 * Ouput: |
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2724 * rax - int crc result |
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2725 */ |
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2726 address generate_updateBytesCRC32() { |
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2727 assert(UseCRC32Intrinsics, "need AVX and CLMUL instructions"); |
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2728 |
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2729 __ align(CodeEntryAlignment); |
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2730 StubCodeMark mark(this, "StubRoutines", "updateBytesCRC32"); |
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2731 |
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2732 address start = __ pc(); |
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2733 |
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2734 const Register crc = rdx; // crc |
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2735 const Register buf = rsi; // source java byte array address |
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2736 const Register len = rcx; // length |
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2737 const Register table = rdi; // crc_table address (reuse register) |
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2738 const Register tmp = rbx; |
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2739 assert_different_registers(crc, buf, len, table, tmp, rax); |
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2740 |
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2741 BLOCK_COMMENT("Entry:"); |
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2742 __ enter(); // required for proper stackwalking of RuntimeStub frame |
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2743 __ push(rsi); |
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2744 __ push(rdi); |
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2745 __ push(rbx); |
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2746 |
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2747 Address crc_arg(rbp, 8 + 0); |
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2748 Address buf_arg(rbp, 8 + 4); |
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2749 Address len_arg(rbp, 8 + 8); |
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2750 |
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2751 // Load up: |
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2752 __ movl(crc, crc_arg); |
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2753 __ movptr(buf, buf_arg); |
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2754 __ movl(len, len_arg); |
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2755 |
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2756 __ kernel_crc32(crc, buf, len, table, tmp); |
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2757 |
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2758 __ movl(rax, crc); |
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2759 __ pop(rbx); |
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2760 __ pop(rdi); |
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2761 __ pop(rsi); |
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2762 __ leave(); // required for proper stackwalking of RuntimeStub frame |
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2763 __ ret(0); |
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2764 |
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2765 return start; |
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2766 } |
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2767 |
11127 | 2768 // Safefetch stubs. |
2769 void generate_safefetch(const char* name, int size, address* entry, | |
2770 address* fault_pc, address* continuation_pc) { | |
2771 // safefetch signatures: | |
2772 // int SafeFetch32(int* adr, int errValue); | |
2773 // intptr_t SafeFetchN (intptr_t* adr, intptr_t errValue); | |
2774 | |
2775 StubCodeMark mark(this, "StubRoutines", name); | |
2776 | |
2777 // Entry point, pc or function descriptor. | |
2778 *entry = __ pc(); | |
2779 | |
2780 __ movl(rax, Address(rsp, 0x8)); | |
2781 __ movl(rcx, Address(rsp, 0x4)); | |
2782 // Load *adr into eax, may fault. | |
2783 *fault_pc = __ pc(); | |
2784 switch (size) { | |
2785 case 4: | |
2786 // int32_t | |
2787 __ movl(rax, Address(rcx, 0)); | |
2788 break; | |
2789 case 8: | |
2790 // int64_t | |
2791 Unimplemented(); | |
2792 break; | |
2793 default: | |
2794 ShouldNotReachHere(); | |
2795 } | |
2796 | |
2797 // Return errValue or *adr. | |
2798 *continuation_pc = __ pc(); | |
2799 __ ret(0); | |
2800 } | |
6894 | 2801 |
0 | 2802 public: |
2803 // Information about frame layout at time of blocking runtime call. | |
2804 // Note that we only have to preserve callee-saved registers since | |
2805 // the compilers are responsible for supplying a continuation point | |
2806 // if they expect all registers to be preserved. | |
2807 enum layout { | |
2808 thread_off, // last_java_sp | |
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2809 arg1_off, |
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2810 arg2_off, |
0 | 2811 rbp_off, // callee saved register |
2812 ret_pc, | |
2813 framesize | |
2814 }; | |
2815 | |
2816 private: | |
2817 | |
2818 #undef __ | |
2819 #define __ masm-> | |
2820 | |
2821 //------------------------------------------------------------------------------------------------------------------------ | |
2822 // Continuation point for throwing of implicit exceptions that are not handled in | |
2823 // the current activation. Fabricates an exception oop and initiates normal | |
2824 // exception dispatching in this frame. | |
2825 // | |
2826 // Previously the compiler (c2) allowed for callee save registers on Java calls. | |
2827 // This is no longer true after adapter frames were removed but could possibly | |
2828 // be brought back in the future if the interpreter code was reworked and it | |
2829 // was deemed worthwhile. The comment below was left to describe what must | |
2830 // happen here if callee saves were resurrected. As it stands now this stub | |
2831 // could actually be a vanilla BufferBlob and have now oopMap at all. | |
2832 // Since it doesn't make much difference we've chosen to leave it the | |
2833 // way it was in the callee save days and keep the comment. | |
2834 | |
2835 // If we need to preserve callee-saved values we need a callee-saved oop map and | |
2836 // therefore have to make these stubs into RuntimeStubs rather than BufferBlobs. | |
2837 // If the compiler needs all registers to be preserved between the fault | |
2838 // point and the exception handler then it must assume responsibility for that in | |
2839 // AbstractCompiler::continuation_for_implicit_null_exception or | |
2840 // continuation_for_implicit_division_by_zero_exception. All other implicit | |
2841 // exceptions (e.g., NullPointerException or AbstractMethodError on entry) are | |
2842 // either at call sites or otherwise assume that stack unwinding will be initiated, | |
2843 // so caller saved registers were assumed volatile in the compiler. | |
2844 address generate_throw_exception(const char* name, address runtime_entry, | |
3937 | 2845 Register arg1 = noreg, Register arg2 = noreg) { |
0 | 2846 |
2847 int insts_size = 256; | |
2848 int locs_size = 32; | |
2849 | |
2850 CodeBuffer code(name, insts_size, locs_size); | |
2851 OopMapSet* oop_maps = new OopMapSet(); | |
2852 MacroAssembler* masm = new MacroAssembler(&code); | |
2853 | |
2854 address start = __ pc(); | |
2855 | |
2856 // This is an inlined and slightly modified version of call_VM | |
2857 // which has the ability to fetch the return PC out of | |
2858 // thread-local storage and also sets up last_Java_sp slightly | |
2859 // differently than the real call_VM | |
2860 Register java_thread = rbx; | |
2861 __ get_thread(java_thread); | |
2862 | |
2863 __ enter(); // required for proper stackwalking of RuntimeStub frame | |
2864 | |
2865 // pc and rbp, already pushed | |
304 | 2866 __ subptr(rsp, (framesize-2) * wordSize); // prolog |
0 | 2867 |
2868 // Frame is now completed as far as size and linkage. | |
2869 | |
2870 int frame_complete = __ pc() - start; | |
2871 | |
2872 // push java thread (becomes first argument of C function) | |
304 | 2873 __ movptr(Address(rsp, thread_off * wordSize), java_thread); |
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2874 if (arg1 != noreg) { |
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2875 __ movptr(Address(rsp, arg1_off * wordSize), arg1); |
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2876 } |
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2877 if (arg2 != noreg) { |
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2878 assert(arg1 != noreg, "missing reg arg"); |
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2879 __ movptr(Address(rsp, arg2_off * wordSize), arg2); |
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2880 } |
0 | 2881 |
2882 // Set up last_Java_sp and last_Java_fp | |
2883 __ set_last_Java_frame(java_thread, rsp, rbp, NULL); | |
2884 | |
2885 // Call runtime | |
2886 BLOCK_COMMENT("call runtime_entry"); | |
2887 __ call(RuntimeAddress(runtime_entry)); | |
2888 // Generate oop map | |
2889 OopMap* map = new OopMap(framesize, 0); | |
2890 oop_maps->add_gc_map(__ pc() - start, map); | |
2891 | |
2892 // restore the thread (cannot use the pushed argument since arguments | |
2893 // may be overwritten by C code generated by an optimizing compiler); | |
2894 // however can use the register value directly if it is callee saved. | |
2895 __ get_thread(java_thread); | |
2896 | |
2897 __ reset_last_Java_frame(java_thread, true, false); | |
2898 | |
2899 __ leave(); // required for proper stackwalking of RuntimeStub frame | |
2900 | |
2901 // check for pending exceptions | |
2902 #ifdef ASSERT | |
2903 Label L; | |
304 | 2904 __ cmpptr(Address(java_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
0 | 2905 __ jcc(Assembler::notEqual, L); |
2906 __ should_not_reach_here(); | |
2907 __ bind(L); | |
2908 #endif /* ASSERT */ | |
2909 __ jump(RuntimeAddress(StubRoutines::forward_exception_entry())); | |
2910 | |
2911 | |
2912 RuntimeStub* stub = RuntimeStub::new_runtime_stub(name, &code, frame_complete, framesize, oop_maps, false); | |
2913 return stub->entry_point(); | |
2914 } | |
2915 | |
2916 | |
2917 void create_control_words() { | |
2918 // Round to nearest, 53-bit mode, exceptions masked | |
2919 StubRoutines::_fpu_cntrl_wrd_std = 0x027F; | |
2920 // Round to zero, 53-bit mode, exception mased | |
2921 StubRoutines::_fpu_cntrl_wrd_trunc = 0x0D7F; | |
2922 // Round to nearest, 24-bit mode, exceptions masked | |
2923 StubRoutines::_fpu_cntrl_wrd_24 = 0x007F; | |
2924 // Round to nearest, 64-bit mode, exceptions masked | |
2925 StubRoutines::_fpu_cntrl_wrd_64 = 0x037F; | |
2926 // Round to nearest, 64-bit mode, exceptions masked | |
2927 StubRoutines::_mxcsr_std = 0x1F80; | |
2928 // Note: the following two constants are 80-bit values | |
2929 // layout is critical for correct loading by FPU. | |
2930 // Bias for strict fp multiply/divide | |
2931 StubRoutines::_fpu_subnormal_bias1[0]= 0x00000000; // 2^(-15360) == 0x03ff 8000 0000 0000 0000 | |
2932 StubRoutines::_fpu_subnormal_bias1[1]= 0x80000000; | |
2933 StubRoutines::_fpu_subnormal_bias1[2]= 0x03ff; | |
2934 // Un-Bias for strict fp multiply/divide | |
2935 StubRoutines::_fpu_subnormal_bias2[0]= 0x00000000; // 2^(+15360) == 0x7bff 8000 0000 0000 0000 | |
2936 StubRoutines::_fpu_subnormal_bias2[1]= 0x80000000; | |
2937 StubRoutines::_fpu_subnormal_bias2[2]= 0x7bff; | |
2938 } | |
2939 | |
2940 //--------------------------------------------------------------------------- | |
2941 // Initialization | |
2942 | |
2943 void generate_initial() { | |
2944 // Generates all stubs and initializes the entry points | |
2945 | |
2946 //------------------------------------------------------------------------------------------------------------------------ | |
2947 // entry points that exist in all platforms | |
2948 // Note: This is code that could be shared among different platforms - however the benefit seems to be smaller than | |
2949 // the disadvantage of having a much more complicated generator structure. See also comment in stubRoutines.hpp. | |
2950 StubRoutines::_forward_exception_entry = generate_forward_exception(); | |
2951 | |
2952 StubRoutines::_call_stub_entry = | |
2953 generate_call_stub(StubRoutines::_call_stub_return_address); | |
2954 // is referenced by megamorphic call | |
2955 StubRoutines::_catch_exception_entry = generate_catch_exception(); | |
2956 | |
2957 // These are currently used by Solaris/Intel | |
2958 StubRoutines::_atomic_xchg_entry = generate_atomic_xchg(); | |
2959 | |
2960 StubRoutines::_handler_for_unsafe_access_entry = | |
2961 generate_handler_for_unsafe_access(); | |
2962 | |
2963 // platform dependent | |
2964 create_control_words(); | |
2965 | |
304 | 2966 StubRoutines::x86::_verify_mxcsr_entry = generate_verify_mxcsr(); |
2967 StubRoutines::x86::_verify_fpu_cntrl_wrd_entry = generate_verify_fpu_cntrl_wrd(); | |
0 | 2968 StubRoutines::_d2i_wrapper = generate_d2i_wrapper(T_INT, |
2969 CAST_FROM_FN_PTR(address, SharedRuntime::d2i)); | |
2970 StubRoutines::_d2l_wrapper = generate_d2i_wrapper(T_LONG, | |
2971 CAST_FROM_FN_PTR(address, SharedRuntime::d2l)); | |
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2972 |
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2973 // Build this early so it's available for the interpreter |
4743 | 2974 StubRoutines::_throw_StackOverflowError_entry = generate_throw_exception("StackOverflowError throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_StackOverflowError)); |
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2975 |
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2976 if (UseCRC32Intrinsics) { |
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2977 // set table address before stub generation which use it |
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2978 StubRoutines::_crc_table_adr = (address)StubRoutines::x86::_crc_table; |
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2979 StubRoutines::_updateBytesCRC32 = generate_updateBytesCRC32(); |
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2980 } |
0 | 2981 } |
2982 | |
2983 | |
2984 void generate_all() { | |
2985 // Generates all stubs and initializes the entry points | |
2986 | |
2987 // These entry points require SharedInfo::stack0 to be set up in non-core builds | |
2988 // and need to be relocatable, so they each fabricate a RuntimeStub internally. | |
3937 | 2989 StubRoutines::_throw_AbstractMethodError_entry = generate_throw_exception("AbstractMethodError throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_AbstractMethodError)); |
2990 StubRoutines::_throw_IncompatibleClassChangeError_entry= generate_throw_exception("IncompatibleClassChangeError throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_IncompatibleClassChangeError)); | |
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2991 StubRoutines::_throw_InvalidInstalledCodeException_entry = generate_throw_exception("InvalidInstalledCodeException throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_InvalidInstalledCodeException)); |
3937 | 2992 StubRoutines::_throw_NullPointerException_at_call_entry= generate_throw_exception("NullPointerException at call throw_exception", CAST_FROM_FN_PTR(address, SharedRuntime::throw_NullPointerException_at_call)); |
0 | 2993 |
2994 //------------------------------------------------------------------------------------------------------------------------ | |
2995 // entry points that are platform specific | |
2996 | |
2997 // support for verify_oop (must happen after universe_init) | |
2998 StubRoutines::_verify_oop_subroutine_entry = generate_verify_oop(); | |
2999 | |
3000 // arraycopy stubs used by compilers | |
3001 generate_arraycopy_stubs(); | |
710 | 3002 |
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3003 generate_math_stubs(); |
6894 | 3004 |
3005 // don't bother generating these AES intrinsic stubs unless global flag is set | |
3006 if (UseAESIntrinsics) { | |
3007 StubRoutines::x86::_key_shuffle_mask_addr = generate_key_shuffle_mask(); // might be needed by the others | |
3008 | |
3009 StubRoutines::_aescrypt_encryptBlock = generate_aescrypt_encryptBlock(); | |
3010 StubRoutines::_aescrypt_decryptBlock = generate_aescrypt_decryptBlock(); | |
3011 StubRoutines::_cipherBlockChaining_encryptAESCrypt = generate_cipherBlockChaining_encryptAESCrypt(); | |
3012 StubRoutines::_cipherBlockChaining_decryptAESCrypt = generate_cipherBlockChaining_decryptAESCrypt(); | |
3013 } | |
11127 | 3014 |
3015 // Safefetch stubs. | |
3016 generate_safefetch("SafeFetch32", sizeof(int), &StubRoutines::_safefetch32_entry, | |
3017 &StubRoutines::_safefetch32_fault_pc, | |
3018 &StubRoutines::_safefetch32_continuation_pc); | |
3019 StubRoutines::_safefetchN_entry = StubRoutines::_safefetch32_entry; | |
3020 StubRoutines::_safefetchN_fault_pc = StubRoutines::_safefetch32_fault_pc; | |
3021 StubRoutines::_safefetchN_continuation_pc = StubRoutines::_safefetch32_continuation_pc; | |
0 | 3022 } |
3023 | |
3024 | |
3025 public: | |
3026 StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) { | |
3027 if (all) { | |
3028 generate_all(); | |
3029 } else { | |
3030 generate_initial(); | |
3031 } | |
3032 } | |
3033 }; // end class declaration | |
3034 | |
3035 | |
3036 void StubGenerator_generate(CodeBuffer* code, bool all) { | |
3037 StubGenerator g(code, all); | |
3038 } |