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annotate src/cpu/x86/vm/jniFastGetField_x86_32.cpp @ 21089:bb63a1b5487c
Merge.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Wed, 22 Apr 2015 16:22:53 +0200 |
parents | cd3d6a6b95d9 |
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rev | line source |
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0 | 1 /* |
1748 | 2 * Copyright (c) 2004, 2010, 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" |
1972 | 27 #include "memory/resourceArea.hpp" |
28 #include "prims/jniFastGetField.hpp" | |
29 #include "prims/jvm_misc.hpp" | |
30 #include "runtime/safepoint.hpp" | |
0 | 31 |
32 #define __ masm-> | |
33 | |
34 #define BUFFER_SIZE 30 | |
35 | |
36 #ifdef _WINDOWS | |
37 GetBooleanField_t JNI_FastGetField::jni_fast_GetBooleanField_fp; | |
38 GetByteField_t JNI_FastGetField::jni_fast_GetByteField_fp; | |
39 GetCharField_t JNI_FastGetField::jni_fast_GetCharField_fp; | |
40 GetShortField_t JNI_FastGetField::jni_fast_GetShortField_fp; | |
41 GetIntField_t JNI_FastGetField::jni_fast_GetIntField_fp; | |
42 GetLongField_t JNI_FastGetField::jni_fast_GetLongField_fp; | |
43 GetFloatField_t JNI_FastGetField::jni_fast_GetFloatField_fp; | |
44 GetDoubleField_t JNI_FastGetField::jni_fast_GetDoubleField_fp; | |
45 #endif | |
46 | |
47 // Instead of issuing lfence for LoadLoad barrier, we create data dependency | |
48 // between loads, which is much more efficient than lfence. | |
49 | |
50 address JNI_FastGetField::generate_fast_get_int_field0(BasicType type) { | |
51 const char *name; | |
52 switch (type) { | |
53 case T_BOOLEAN: name = "jni_fast_GetBooleanField"; break; | |
54 case T_BYTE: name = "jni_fast_GetByteField"; break; | |
55 case T_CHAR: name = "jni_fast_GetCharField"; break; | |
56 case T_SHORT: name = "jni_fast_GetShortField"; break; | |
57 case T_INT: name = "jni_fast_GetIntField"; break; | |
58 default: ShouldNotReachHere(); | |
59 } | |
60 ResourceMark rm; | |
1748 | 61 BufferBlob* blob = BufferBlob::create(name, BUFFER_SIZE*wordSize); |
62 CodeBuffer cbuf(blob); | |
0 | 63 MacroAssembler* masm = new MacroAssembler(&cbuf); |
1748 | 64 address fast_entry = __ pc(); |
0 | 65 |
66 Label slow; | |
67 | |
68 // stack layout: offset from rsp (in words): | |
69 // return pc 0 | |
70 // jni env 1 | |
71 // obj 2 | |
72 // jfieldID 3 | |
73 | |
74 ExternalAddress counter(SafepointSynchronize::safepoint_counter_addr()); | |
75 __ mov32 (rcx, counter); | |
76 __ testb (rcx, 1); | |
77 __ jcc (Assembler::notZero, slow); | |
78 if (os::is_MP()) { | |
304 | 79 __ mov(rax, rcx); |
80 __ andptr(rax, 1); // rax, must end up 0 | |
81 __ movptr(rdx, Address(rsp, rax, Address::times_1, 2*wordSize)); | |
0 | 82 // obj, notice rax, is 0. |
83 // rdx is data dependent on rcx. | |
84 } else { | |
304 | 85 __ movptr (rdx, Address(rsp, 2*wordSize)); // obj |
0 | 86 } |
304 | 87 __ movptr(rax, Address(rsp, 3*wordSize)); // jfieldID |
88 __ movptr(rdx, Address(rdx, 0)); // *obj | |
89 __ shrptr (rax, 2); // offset | |
0 | 90 |
91 assert(count < LIST_CAPACITY, "LIST_CAPACITY too small"); | |
92 speculative_load_pclist[count] = __ pc(); | |
93 switch (type) { | |
304 | 94 case T_BOOLEAN: __ movzbl (rax, Address(rdx, rax, Address::times_1)); break; |
95 case T_BYTE: __ movsbl (rax, Address(rdx, rax, Address::times_1)); break; | |
96 case T_CHAR: __ movzwl (rax, Address(rdx, rax, Address::times_1)); break; | |
97 case T_SHORT: __ movswl (rax, Address(rdx, rax, Address::times_1)); break; | |
0 | 98 case T_INT: __ movl (rax, Address(rdx, rax, Address::times_1)); break; |
99 default: ShouldNotReachHere(); | |
100 } | |
101 | |
102 Address ca1; | |
103 if (os::is_MP()) { | |
104 __ lea(rdx, counter); | |
304 | 105 __ xorptr(rdx, rax); |
106 __ xorptr(rdx, rax); | |
0 | 107 __ cmp32(rcx, Address(rdx, 0)); |
108 // ca1 is the same as ca because | |
109 // rax, ^ counter_addr ^ rax, = address | |
110 // ca1 is data dependent on rax,. | |
111 } else { | |
112 __ cmp32(rcx, counter); | |
113 } | |
114 __ jcc (Assembler::notEqual, slow); | |
115 | |
116 #ifndef _WINDOWS | |
117 __ ret (0); | |
118 #else | |
119 // __stdcall calling convention | |
120 __ ret (3*wordSize); | |
121 #endif | |
122 | |
123 slowcase_entry_pclist[count++] = __ pc(); | |
124 __ bind (slow); | |
125 address slow_case_addr; | |
126 switch (type) { | |
127 case T_BOOLEAN: slow_case_addr = jni_GetBooleanField_addr(); break; | |
128 case T_BYTE: slow_case_addr = jni_GetByteField_addr(); break; | |
129 case T_CHAR: slow_case_addr = jni_GetCharField_addr(); break; | |
130 case T_SHORT: slow_case_addr = jni_GetShortField_addr(); break; | |
131 case T_INT: slow_case_addr = jni_GetIntField_addr(); | |
132 } | |
133 // tail call | |
134 __ jump (ExternalAddress(slow_case_addr)); | |
135 | |
136 __ flush (); | |
137 | |
138 #ifndef _WINDOWS | |
139 return fast_entry; | |
140 #else | |
141 switch (type) { | |
1748 | 142 case T_BOOLEAN: jni_fast_GetBooleanField_fp = (GetBooleanField_t) fast_entry; break; |
143 case T_BYTE: jni_fast_GetByteField_fp = (GetByteField_t) fast_entry; break; | |
144 case T_CHAR: jni_fast_GetCharField_fp = (GetCharField_t) fast_entry; break; | |
145 case T_SHORT: jni_fast_GetShortField_fp = (GetShortField_t) fast_entry; break; | |
146 case T_INT: jni_fast_GetIntField_fp = (GetIntField_t) fast_entry; break; | |
0 | 147 } |
148 return os::win32::fast_jni_accessor_wrapper(type); | |
149 #endif | |
150 } | |
151 | |
152 address JNI_FastGetField::generate_fast_get_boolean_field() { | |
153 return generate_fast_get_int_field0(T_BOOLEAN); | |
154 } | |
155 | |
156 address JNI_FastGetField::generate_fast_get_byte_field() { | |
157 return generate_fast_get_int_field0(T_BYTE); | |
158 } | |
159 | |
160 address JNI_FastGetField::generate_fast_get_char_field() { | |
161 return generate_fast_get_int_field0(T_CHAR); | |
162 } | |
163 | |
164 address JNI_FastGetField::generate_fast_get_short_field() { | |
165 return generate_fast_get_int_field0(T_SHORT); | |
166 } | |
167 | |
168 address JNI_FastGetField::generate_fast_get_int_field() { | |
169 return generate_fast_get_int_field0(T_INT); | |
170 } | |
171 | |
172 address JNI_FastGetField::generate_fast_get_long_field() { | |
173 const char *name = "jni_fast_GetLongField"; | |
174 ResourceMark rm; | |
1748 | 175 BufferBlob* blob = BufferBlob::create(name, BUFFER_SIZE*wordSize); |
176 CodeBuffer cbuf(blob); | |
0 | 177 MacroAssembler* masm = new MacroAssembler(&cbuf); |
1748 | 178 address fast_entry = __ pc(); |
0 | 179 |
180 Label slow; | |
181 | |
182 // stack layout: offset from rsp (in words): | |
183 // old rsi 0 | |
184 // return pc 1 | |
185 // jni env 2 | |
186 // obj 3 | |
187 // jfieldID 4 | |
188 | |
189 ExternalAddress counter(SafepointSynchronize::safepoint_counter_addr()); | |
190 | |
304 | 191 __ push (rsi); |
0 | 192 __ mov32 (rcx, counter); |
193 __ testb (rcx, 1); | |
194 __ jcc (Assembler::notZero, slow); | |
195 if (os::is_MP()) { | |
304 | 196 __ mov(rax, rcx); |
197 __ andptr(rax, 1); // rax, must end up 0 | |
198 __ movptr(rdx, Address(rsp, rax, Address::times_1, 3*wordSize)); | |
0 | 199 // obj, notice rax, is 0. |
200 // rdx is data dependent on rcx. | |
201 } else { | |
304 | 202 __ movptr(rdx, Address(rsp, 3*wordSize)); // obj |
0 | 203 } |
304 | 204 __ movptr(rsi, Address(rsp, 4*wordSize)); // jfieldID |
205 __ movptr(rdx, Address(rdx, 0)); // *obj | |
206 __ shrptr(rsi, 2); // offset | |
0 | 207 |
208 assert(count < LIST_CAPACITY-1, "LIST_CAPACITY too small"); | |
209 speculative_load_pclist[count++] = __ pc(); | |
304 | 210 __ movptr(rax, Address(rdx, rsi, Address::times_1)); |
211 #ifndef _LP64 | |
0 | 212 speculative_load_pclist[count] = __ pc(); |
304 | 213 __ movl(rdx, Address(rdx, rsi, Address::times_1, 4)); |
214 #endif // _LP64 | |
0 | 215 |
216 if (os::is_MP()) { | |
304 | 217 __ lea(rsi, counter); |
218 __ xorptr(rsi, rdx); | |
219 __ xorptr(rsi, rax); | |
220 __ xorptr(rsi, rdx); | |
221 __ xorptr(rsi, rax); | |
0 | 222 __ cmp32(rcx, Address(rsi, 0)); |
223 // ca1 is the same as ca because | |
224 // rax, ^ rdx ^ counter_addr ^ rax, ^ rdx = address | |
225 // ca1 is data dependent on both rax, and rdx. | |
226 } else { | |
227 __ cmp32(rcx, counter); | |
228 } | |
229 __ jcc (Assembler::notEqual, slow); | |
230 | |
304 | 231 __ pop (rsi); |
0 | 232 |
233 #ifndef _WINDOWS | |
234 __ ret (0); | |
235 #else | |
236 // __stdcall calling convention | |
237 __ ret (3*wordSize); | |
238 #endif | |
239 | |
240 slowcase_entry_pclist[count-1] = __ pc(); | |
241 slowcase_entry_pclist[count++] = __ pc(); | |
242 __ bind (slow); | |
304 | 243 __ pop (rsi); |
0 | 244 address slow_case_addr = jni_GetLongField_addr();; |
245 // tail call | |
246 __ jump (ExternalAddress(slow_case_addr)); | |
247 | |
248 __ flush (); | |
249 | |
250 #ifndef _WINDOWS | |
251 return fast_entry; | |
252 #else | |
1748 | 253 jni_fast_GetLongField_fp = (GetLongField_t) fast_entry; |
0 | 254 return os::win32::fast_jni_accessor_wrapper(T_LONG); |
255 #endif | |
256 } | |
257 | |
258 address JNI_FastGetField::generate_fast_get_float_field0(BasicType type) { | |
259 const char *name; | |
260 switch (type) { | |
261 case T_FLOAT: name = "jni_fast_GetFloatField"; break; | |
262 case T_DOUBLE: name = "jni_fast_GetDoubleField"; break; | |
263 default: ShouldNotReachHere(); | |
264 } | |
265 ResourceMark rm; | |
1748 | 266 BufferBlob* blob = BufferBlob::create(name, BUFFER_SIZE*wordSize); |
267 CodeBuffer cbuf(blob); | |
0 | 268 MacroAssembler* masm = new MacroAssembler(&cbuf); |
1748 | 269 address fast_entry = __ pc(); |
0 | 270 |
271 Label slow_with_pop, slow; | |
272 | |
273 // stack layout: offset from rsp (in words): | |
274 // return pc 0 | |
275 // jni env 1 | |
276 // obj 2 | |
277 // jfieldID 3 | |
278 | |
279 ExternalAddress counter(SafepointSynchronize::safepoint_counter_addr()); | |
280 | |
281 __ mov32 (rcx, counter); | |
282 __ testb (rcx, 1); | |
283 __ jcc (Assembler::notZero, slow); | |
284 if (os::is_MP()) { | |
304 | 285 __ mov(rax, rcx); |
286 __ andptr(rax, 1); // rax, must end up 0 | |
287 __ movptr(rdx, Address(rsp, rax, Address::times_1, 2*wordSize)); | |
0 | 288 // obj, notice rax, is 0. |
289 // rdx is data dependent on rcx. | |
290 } else { | |
304 | 291 __ movptr(rdx, Address(rsp, 2*wordSize)); // obj |
0 | 292 } |
304 | 293 __ movptr(rax, Address(rsp, 3*wordSize)); // jfieldID |
294 __ movptr(rdx, Address(rdx, 0)); // *obj | |
295 __ shrptr(rax, 2); // offset | |
0 | 296 |
297 assert(count < LIST_CAPACITY, "LIST_CAPACITY too small"); | |
298 speculative_load_pclist[count] = __ pc(); | |
299 switch (type) { | |
304 | 300 #ifndef _LP64 |
0 | 301 case T_FLOAT: __ fld_s (Address(rdx, rax, Address::times_1)); break; |
302 case T_DOUBLE: __ fld_d (Address(rdx, rax, Address::times_1)); break; | |
304 | 303 #else |
304 case T_FLOAT: __ movflt (xmm0, Address(robj, roffset, Address::times_1)); break; | |
305 case T_DOUBLE: __ movdbl (xmm0, Address(robj, roffset, Address::times_1)); break; | |
306 #endif // _LP64 | |
0 | 307 default: ShouldNotReachHere(); |
308 } | |
309 | |
310 Address ca1; | |
311 if (os::is_MP()) { | |
312 __ fst_s (Address(rsp, -4)); | |
313 __ lea(rdx, counter); | |
314 __ movl (rax, Address(rsp, -4)); | |
304 | 315 // garbage hi-order bits on 64bit are harmless. |
316 __ xorptr(rdx, rax); | |
317 __ xorptr(rdx, rax); | |
0 | 318 __ cmp32(rcx, Address(rdx, 0)); |
319 // rax, ^ counter_addr ^ rax, = address | |
320 // ca1 is data dependent on the field | |
321 // access. | |
322 } else { | |
323 __ cmp32(rcx, counter); | |
324 } | |
325 __ jcc (Assembler::notEqual, slow_with_pop); | |
326 | |
327 #ifndef _WINDOWS | |
328 __ ret (0); | |
329 #else | |
330 // __stdcall calling convention | |
331 __ ret (3*wordSize); | |
332 #endif | |
333 | |
334 __ bind (slow_with_pop); | |
335 // invalid load. pop FPU stack. | |
336 __ fstp_d (0); | |
337 | |
338 slowcase_entry_pclist[count++] = __ pc(); | |
339 __ bind (slow); | |
340 address slow_case_addr; | |
341 switch (type) { | |
342 case T_FLOAT: slow_case_addr = jni_GetFloatField_addr(); break; | |
343 case T_DOUBLE: slow_case_addr = jni_GetDoubleField_addr(); break; | |
344 default: ShouldNotReachHere(); | |
345 } | |
346 // tail call | |
347 __ jump (ExternalAddress(slow_case_addr)); | |
348 | |
349 __ flush (); | |
350 | |
351 #ifndef _WINDOWS | |
352 return fast_entry; | |
353 #else | |
354 switch (type) { | |
1748 | 355 case T_FLOAT: jni_fast_GetFloatField_fp = (GetFloatField_t) fast_entry; break; |
356 case T_DOUBLE: jni_fast_GetDoubleField_fp = (GetDoubleField_t) fast_entry; break; | |
0 | 357 } |
358 return os::win32::fast_jni_accessor_wrapper(type); | |
359 #endif | |
360 } | |
361 | |
362 address JNI_FastGetField::generate_fast_get_float_field() { | |
363 return generate_fast_get_float_field0(T_FLOAT); | |
364 } | |
365 | |
366 address JNI_FastGetField::generate_fast_get_double_field() { | |
367 return generate_fast_get_float_field0(T_DOUBLE); | |
368 } |