1 /*
2 * Copyright 2003-2008 Sun Microsystems, Inc. All Rights Reserved.
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 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 #include "incls/_precompiled.incl"
26 #include "incls/_interpreterRT_x86_64.cpp.incl"
27
28 #define __ _masm->
29
30 // Implementation of SignatureHandlerGenerator
31
32 Register InterpreterRuntime::SignatureHandlerGenerator::from() { return r14; }
33 Register InterpreterRuntime::SignatureHandlerGenerator::to() { return rsp; }
34 Register InterpreterRuntime::SignatureHandlerGenerator::temp() { return rscratch1; }
35
36 void InterpreterRuntime::SignatureHandlerGenerator::pass_int() {
37 const Address src(from(), Interpreter::local_offset_in_bytes(offset()));
38
39 #ifdef _WIN64
40 switch (_num_args) {
41 case 0:
42 __ movl(c_rarg1, src);
43 _num_args++;
44 break;
45 case 1:
46 __ movl(c_rarg2, src);
47 _num_args++;
48 break;
49 case 2:
50 __ movl(c_rarg3, src);
51 _num_args++;
52 break;
53 default:
54 __ movl(rax, src);
55 __ movl(Address(to(), _stack_offset), rax);
56 _stack_offset += wordSize;
57 break;
58 }
59 #else
60 switch (_num_int_args) {
61 case 0:
62 __ movl(c_rarg1, src);
63 _num_int_args++;
64 break;
65 case 1:
66 __ movl(c_rarg2, src);
67 _num_int_args++;
68 break;
69 case 2:
70 __ movl(c_rarg3, src);
71 _num_int_args++;
72 break;
73 case 3:
74 __ movl(c_rarg4, src);
75 _num_int_args++;
76 break;
77 case 4:
78 __ movl(c_rarg5, src);
79 _num_int_args++;
80 break;
81 default:
82 __ movl(rax, src);
83 __ movl(Address(to(), _stack_offset), rax);
84 _stack_offset += wordSize;
85 break;
86 }
87 #endif
88 }
89
90 void InterpreterRuntime::SignatureHandlerGenerator::pass_long() {
91 const Address src(from(), Interpreter::local_offset_in_bytes(offset() + 1));
92
93 #ifdef _WIN64
94 switch (_num_args) {
95 case 0:
96 __ movptr(c_rarg1, src);
97 _num_args++;
98 break;
99 case 1:
100 __ movptr(c_rarg2, src);
101 _num_args++;
102 break;
103 case 2:
104 __ movptr(c_rarg3, src);
105 _num_args++;
106 break;
107 case 3:
108 default:
109 __ movptr(rax, src);
110 __ movptr(Address(to(), _stack_offset), rax);
111 _stack_offset += wordSize;
112 break;
113 }
114 #else
115 switch (_num_int_args) {
116 case 0:
117 __ movptr(c_rarg1, src);
118 _num_int_args++;
119 break;
120 case 1:
121 __ movptr(c_rarg2, src);
122 _num_int_args++;
123 break;
124 case 2:
125 __ movptr(c_rarg3, src);
126 _num_int_args++;
127 break;
128 case 3:
129 __ movptr(c_rarg4, src);
130 _num_int_args++;
131 break;
132 case 4:
133 __ movptr(c_rarg5, src);
134 _num_int_args++;
135 break;
136 default:
137 __ movptr(rax, src);
138 __ movptr(Address(to(), _stack_offset), rax);
139 _stack_offset += wordSize;
140 break;
141 }
142 #endif
143 }
144
145 void InterpreterRuntime::SignatureHandlerGenerator::pass_float() {
146 const Address src(from(), Interpreter::local_offset_in_bytes(offset()));
147
148 #ifdef _WIN64
149 if (_num_args < Argument::n_float_register_parameters_c-1) {
150 __ movflt(as_XMMRegister(++_num_args), src);
151 } else {
152 __ movl(rax, src);
153 __ movl(Address(to(), _stack_offset), rax);
154 _stack_offset += wordSize;
155 }
156 #else
157 if (_num_fp_args < Argument::n_float_register_parameters_c) {
158 __ movflt(as_XMMRegister(_num_fp_args++), src);
159 } else {
160 __ movl(rax, src);
161 __ movl(Address(to(), _stack_offset), rax);
162 _stack_offset += wordSize;
163 }
164 #endif
165 }
166
167 void InterpreterRuntime::SignatureHandlerGenerator::pass_double() {
168 const Address src(from(), Interpreter::local_offset_in_bytes(offset() + 1));
169
170 #ifdef _WIN64
171 if (_num_args < Argument::n_float_register_parameters_c-1) {
172 __ movdbl(as_XMMRegister(++_num_args), src);
173 } else {
174 __ movptr(rax, src);
175 __ movptr(Address(to(), _stack_offset), rax);
176 _stack_offset += wordSize;
177 }
178 #else
179 if (_num_fp_args < Argument::n_float_register_parameters_c) {
180 __ movdbl(as_XMMRegister(_num_fp_args++), src);
181 } else {
182 __ movptr(rax, src);
183 __ movptr(Address(to(), _stack_offset), rax);
184 _stack_offset += wordSize;
185 }
186 #endif
187 }
188
189 void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
190 const Address src(from(), Interpreter::local_offset_in_bytes(offset()));
191
192 #ifdef _WIN64
193 switch (_num_args) {
194 case 0:
195 assert(offset() == 0, "argument register 1 can only be (non-null) receiver");
196 __ lea(c_rarg1, src);
197 _num_args++;
198 break;
199 case 1:
200 __ lea(rax, src);
201 __ xorl(c_rarg2, c_rarg2);
202 __ cmpptr(src, 0);
203 __ cmov(Assembler::notEqual, c_rarg2, rax);
204 _num_args++;
205 break;
206 case 2:
207 __ lea(rax, src);
208 __ xorl(c_rarg3, c_rarg3);
209 __ cmpptr(src, 0);
210 __ cmov(Assembler::notEqual, c_rarg3, rax);
211 _num_args++;
212 break;
213 default:
214 __ lea(rax, src);
215 __ xorl(temp(), temp());
216 __ cmpptr(src, 0);
217 __ cmov(Assembler::notEqual, temp(), rax);
218 __ movptr(Address(to(), _stack_offset), temp());
219 _stack_offset += wordSize;
220 break;
221 }
222 #else
223 switch (_num_int_args) {
224 case 0:
225 assert(offset() == 0, "argument register 1 can only be (non-null) receiver");
226 __ lea(c_rarg1, src);
227 _num_int_args++;
228 break;
229 case 1:
230 __ lea(rax, src);
231 __ xorl(c_rarg2, c_rarg2);
232 __ cmpptr(src, 0);
233 __ cmov(Assembler::notEqual, c_rarg2, rax);
234 _num_int_args++;
235 break;
236 case 2:
237 __ lea(rax, src);
238 __ xorl(c_rarg3, c_rarg3);
239 __ cmpptr(src, 0);
240 __ cmov(Assembler::notEqual, c_rarg3, rax);
241 _num_int_args++;
242 break;
243 case 3:
244 __ lea(rax, src);
245 __ xorl(c_rarg4, c_rarg4);
246 __ cmpptr(src, 0);
247 __ cmov(Assembler::notEqual, c_rarg4, rax);
248 _num_int_args++;
249 break;
250 case 4:
251 __ lea(rax, src);
252 __ xorl(c_rarg5, c_rarg5);
253 __ cmpptr(src, 0);
254 __ cmov(Assembler::notEqual, c_rarg5, rax);
255 _num_int_args++;
256 break;
257 default:
258 __ lea(rax, src);
259 __ xorl(temp(), temp());
260 __ cmpptr(src, 0);
261 __ cmov(Assembler::notEqual, temp(), rax);
262 __ movptr(Address(to(), _stack_offset), temp());
263 _stack_offset += wordSize;
264 break;
265 }
266 #endif
267 }
268
269 void InterpreterRuntime::SignatureHandlerGenerator::generate(uint64_t fingerprint) {
270 // generate code to handle arguments
271 iterate(fingerprint);
272
273 // return result handler
274 __ lea(rax, ExternalAddress(Interpreter::result_handler(method()->result_type())));
275 __ ret(0);
276
277 __ flush();
278 }
279
280
281 // Implementation of SignatureHandlerLibrary
282
283 void SignatureHandlerLibrary::pd_set_handler(address handler) {}
284
285
286 #ifdef _WIN64
287 class SlowSignatureHandler
288 : public NativeSignatureIterator {
289 private:
290 address _from;
291 intptr_t* _to;
292 intptr_t* _reg_args;
293 intptr_t* _fp_identifiers;
294 unsigned int _num_args;
295
296 #ifdef ASSERT
297 void verify_tag(frame::Tag t) {
298 assert(!TaggedStackInterpreter ||
299 *(intptr_t*)(_from+Interpreter::local_tag_offset_in_bytes(0)) == t, "wrong tag");
300 }
301 #endif // ASSERT
302
303 virtual void pass_int()
304 {
305 jint from_obj = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
306 debug_only(verify_tag(frame::TagValue));
307 _from -= Interpreter::stackElementSize();
308
309 if (_num_args < Argument::n_int_register_parameters_c-1) {
310 *_reg_args++ = from_obj;
311 _num_args++;
312 } else {
313 *_to++ = from_obj;
314 }
315 }
316
317 virtual void pass_long()
318 {
319 intptr_t from_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
320 debug_only(verify_tag(frame::TagValue));
321 _from -= 2*Interpreter::stackElementSize();
322
323 if (_num_args < Argument::n_int_register_parameters_c-1) {
324 *_reg_args++ = from_obj;
325 _num_args++;
326 } else {
327 *_to++ = from_obj;
328 }
329 }
330
331 virtual void pass_object()
332 {
333 intptr_t *from_addr = (intptr_t*)(_from + Interpreter::local_offset_in_bytes(0));
334 debug_only(verify_tag(frame::TagReference));
335 _from -= Interpreter::stackElementSize();
336 if (_num_args < Argument::n_int_register_parameters_c-1) {
337 *_reg_args++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr;
338 _num_args++;
339 } else {
340 *_to++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr;
341 }
342 }
343
344 virtual void pass_float()
345 {
346 jint from_obj = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
347 debug_only(verify_tag(frame::TagValue));
348 _from -= Interpreter::stackElementSize();
349
350 if (_num_args < Argument::n_float_register_parameters_c-1) {
351 *_reg_args++ = from_obj;
352 *_fp_identifiers |= (0x01 << (_num_args*2)); // mark as float
353 _num_args++;
354 } else {
355 *_to++ = from_obj;
356 }
357 }
358
359 virtual void pass_double()
360 {
361 intptr_t from_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
362 debug_only(verify_tag(frame::TagValue));
363 _from -= 2*Interpreter::stackElementSize();
364
365 if (_num_args < Argument::n_float_register_parameters_c-1) {
366 *_reg_args++ = from_obj;
367 *_fp_identifiers |= (0x3 << (_num_args*2)); // mark as double
368 _num_args++;
369 } else {
370 *_to++ = from_obj;
371 }
372 }
373
374 public:
375 SlowSignatureHandler(methodHandle method, address from, intptr_t* to)
376 : NativeSignatureIterator(method)
377 {
378 _from = from;
379 _to = to;
380
381 _reg_args = to - (method->is_static() ? 4 : 5);
382 _fp_identifiers = to - 2;
383 _to = _to + 4; // Windows reserves stack space for register arguments
384 *(int*) _fp_identifiers = 0;
385 _num_args = (method->is_static() ? 1 : 0);
386 }
387 };
388 #else
389 class SlowSignatureHandler
390 : public NativeSignatureIterator {
391 private:
392 address _from;
393 intptr_t* _to;
394 intptr_t* _int_args;
395 intptr_t* _fp_args;
396 intptr_t* _fp_identifiers;
397 unsigned int _num_int_args;
398 unsigned int _num_fp_args;
399
400 #ifdef ASSERT
401 void verify_tag(frame::Tag t) {
402 assert(!TaggedStackInterpreter ||
403 *(intptr_t*)(_from+Interpreter::local_tag_offset_in_bytes(0)) == t, "wrong tag");
404 }
405 #endif // ASSERT
406
407 virtual void pass_int()
408 {
409 jint from_obj = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
410 debug_only(verify_tag(frame::TagValue));
411 _from -= Interpreter::stackElementSize();
412
413 if (_num_int_args < Argument::n_int_register_parameters_c-1) {
414 *_int_args++ = from_obj;
415 _num_int_args++;
416 } else {
417 *_to++ = from_obj;
418 }
419 }
420
421 virtual void pass_long()
422 {
423 intptr_t from_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
424 debug_only(verify_tag(frame::TagValue));
425 _from -= 2*Interpreter::stackElementSize();
426
427 if (_num_int_args < Argument::n_int_register_parameters_c-1) {
428 *_int_args++ = from_obj;
429 _num_int_args++;
430 } else {
431 *_to++ = from_obj;
432 }
433 }
434
435 virtual void pass_object()
436 {
437 intptr_t *from_addr = (intptr_t*)(_from + Interpreter::local_offset_in_bytes(0));
438 debug_only(verify_tag(frame::TagReference));
439 _from -= Interpreter::stackElementSize();
440
441 if (_num_int_args < Argument::n_int_register_parameters_c-1) {
442 *_int_args++ = (*from_addr == 0) ? NULL : (intptr_t)from_addr;
443 _num_int_args++;
444 } else {
445 *_to++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr;
446 }
447 }
448
449 virtual void pass_float()
450 {
451 jint from_obj = *(jint*)(_from+Interpreter::local_offset_in_bytes(0));
452 debug_only(verify_tag(frame::TagValue));
453 _from -= Interpreter::stackElementSize();
454
455 if (_num_fp_args < Argument::n_float_register_parameters_c) {
456 *_fp_args++ = from_obj;
457 _num_fp_args++;
458 } else {
459 *_to++ = from_obj;
460 }
461 }
462
463 virtual void pass_double()
464 {
465 intptr_t from_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
466 _from -= 2*Interpreter::stackElementSize();
467
468 if (_num_fp_args < Argument::n_float_register_parameters_c) {
469 *_fp_args++ = from_obj;
470 *_fp_identifiers |= (1 << _num_fp_args); // mark as double
471 _num_fp_args++;
472 } else {
473 *_to++ = from_obj;
474 }
475 }
476
477 public:
478 SlowSignatureHandler(methodHandle method, address from, intptr_t* to)
479 : NativeSignatureIterator(method)
480 {
481 _from = from;
482 _to = to;
483
484 _int_args = to - (method->is_static() ? 14 : 15);
485 _fp_args = to - 9;
486 _fp_identifiers = to - 10;
487 *(int*) _fp_identifiers = 0;
488 _num_int_args = (method->is_static() ? 1 : 0);
489 _num_fp_args = 0;
490 }
491 };
492 #endif
493
494
495 IRT_ENTRY(address,
496 InterpreterRuntime::slow_signature_handler(JavaThread* thread,
497 methodOopDesc* method,
498 intptr_t* from,
499 intptr_t* to))
500 methodHandle m(thread, (methodOop)method);
501 assert(m->is_native(), "sanity check");
502
503 // handle arguments
504 SlowSignatureHandler(m, (address)from, to + 1).iterate(UCONST64(-1));
505
506 // return result handler
507 return Interpreter::result_handler(m->result_type());
508 IRT_END