Mercurial > hg > graal-compiler
annotate src/cpu/x86/vm/jniFastGetField_x86_64.cpp @ 17527:100ddcb2119f
Merge
author | asaha |
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date | Sun, 08 Dec 2013 21:59:26 -0800 |
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*wordSize | |
35 | |
36 // Instead of issuing lfence for LoadLoad barrier, we create data dependency | |
37 // between loads, which is more efficient than lfence. | |
38 | |
39 // Common register usage: | |
40 // rax/xmm0: result | |
41 // c_rarg0: jni env | |
42 // c_rarg1: obj | |
43 // c_rarg2: jfield id | |
44 | |
45 static const Register robj = r9; | |
46 static const Register rcounter = r10; | |
47 static const Register roffset = r11; | |
48 static const Register rcounter_addr = r11; | |
49 | |
50 // Warning: do not use rip relative addressing after the first counter load | |
51 // since that may scratch r10! | |
52 | |
53 address JNI_FastGetField::generate_fast_get_int_field0(BasicType type) { | |
54 const char *name; | |
55 switch (type) { | |
56 case T_BOOLEAN: name = "jni_fast_GetBooleanField"; break; | |
57 case T_BYTE: name = "jni_fast_GetByteField"; break; | |
58 case T_CHAR: name = "jni_fast_GetCharField"; break; | |
59 case T_SHORT: name = "jni_fast_GetShortField"; break; | |
60 case T_INT: name = "jni_fast_GetIntField"; break; | |
61 case T_LONG: name = "jni_fast_GetLongField"; break; | |
62 default: ShouldNotReachHere(); | |
63 } | |
64 ResourceMark rm; | |
1748 | 65 BufferBlob* blob = BufferBlob::create(name, BUFFER_SIZE); |
66 CodeBuffer cbuf(blob); | |
0 | 67 MacroAssembler* masm = new MacroAssembler(&cbuf); |
1748 | 68 address fast_entry = __ pc(); |
0 | 69 |
70 Label slow; | |
71 | |
72 ExternalAddress counter(SafepointSynchronize::safepoint_counter_addr()); | |
73 __ mov32 (rcounter, counter); | |
304 | 74 __ mov (robj, c_rarg1); |
0 | 75 __ testb (rcounter, 1); |
76 __ jcc (Assembler::notZero, slow); | |
77 if (os::is_MP()) { | |
304 | 78 __ xorptr(robj, rcounter); |
79 __ xorptr(robj, rcounter); // obj, since | |
0 | 80 // robj ^ rcounter ^ rcounter == robj |
81 // robj is data dependent on rcounter. | |
82 } | |
304 | 83 __ movptr(robj, Address(robj, 0)); // *obj |
84 __ mov (roffset, c_rarg2); | |
85 __ shrptr(roffset, 2); // offset | |
0 | 86 |
87 assert(count < LIST_CAPACITY, "LIST_CAPACITY too small"); | |
88 speculative_load_pclist[count] = __ pc(); | |
89 switch (type) { | |
90 case T_BOOLEAN: __ movzbl (rax, Address(robj, roffset, Address::times_1)); break; | |
91 case T_BYTE: __ movsbl (rax, Address(robj, roffset, Address::times_1)); break; | |
92 case T_CHAR: __ movzwl (rax, Address(robj, roffset, Address::times_1)); break; | |
93 case T_SHORT: __ movswl (rax, Address(robj, roffset, Address::times_1)); break; | |
94 case T_INT: __ movl (rax, Address(robj, roffset, Address::times_1)); break; | |
95 case T_LONG: __ movq (rax, Address(robj, roffset, Address::times_1)); break; | |
96 default: ShouldNotReachHere(); | |
97 } | |
98 | |
99 if (os::is_MP()) { | |
100 __ lea(rcounter_addr, counter); | |
101 // ca is data dependent on rax. | |
304 | 102 __ xorptr(rcounter_addr, rax); |
103 __ xorptr(rcounter_addr, rax); | |
0 | 104 __ cmpl (rcounter, Address(rcounter_addr, 0)); |
105 } else { | |
106 __ cmp32 (rcounter, counter); | |
107 } | |
108 __ jcc (Assembler::notEqual, slow); | |
109 | |
110 __ ret (0); | |
111 | |
112 slowcase_entry_pclist[count++] = __ pc(); | |
113 __ bind (slow); | |
114 address slow_case_addr; | |
115 switch (type) { | |
116 case T_BOOLEAN: slow_case_addr = jni_GetBooleanField_addr(); break; | |
117 case T_BYTE: slow_case_addr = jni_GetByteField_addr(); break; | |
118 case T_CHAR: slow_case_addr = jni_GetCharField_addr(); break; | |
119 case T_SHORT: slow_case_addr = jni_GetShortField_addr(); break; | |
120 case T_INT: slow_case_addr = jni_GetIntField_addr(); break; | |
121 case T_LONG: slow_case_addr = jni_GetLongField_addr(); | |
122 } | |
123 // tail call | |
124 __ jump (ExternalAddress(slow_case_addr)); | |
125 | |
126 __ flush (); | |
127 | |
128 return fast_entry; | |
129 } | |
130 | |
131 address JNI_FastGetField::generate_fast_get_boolean_field() { | |
132 return generate_fast_get_int_field0(T_BOOLEAN); | |
133 } | |
134 | |
135 address JNI_FastGetField::generate_fast_get_byte_field() { | |
136 return generate_fast_get_int_field0(T_BYTE); | |
137 } | |
138 | |
139 address JNI_FastGetField::generate_fast_get_char_field() { | |
140 return generate_fast_get_int_field0(T_CHAR); | |
141 } | |
142 | |
143 address JNI_FastGetField::generate_fast_get_short_field() { | |
144 return generate_fast_get_int_field0(T_SHORT); | |
145 } | |
146 | |
147 address JNI_FastGetField::generate_fast_get_int_field() { | |
148 return generate_fast_get_int_field0(T_INT); | |
149 } | |
150 | |
151 address JNI_FastGetField::generate_fast_get_long_field() { | |
152 return generate_fast_get_int_field0(T_LONG); | |
153 } | |
154 | |
155 address JNI_FastGetField::generate_fast_get_float_field0(BasicType type) { | |
156 const char *name; | |
157 switch (type) { | |
158 case T_FLOAT: name = "jni_fast_GetFloatField"; break; | |
159 case T_DOUBLE: name = "jni_fast_GetDoubleField"; break; | |
160 default: ShouldNotReachHere(); | |
161 } | |
162 ResourceMark rm; | |
1748 | 163 BufferBlob* blob = BufferBlob::create(name, BUFFER_SIZE); |
164 CodeBuffer cbuf(blob); | |
0 | 165 MacroAssembler* masm = new MacroAssembler(&cbuf); |
1748 | 166 address fast_entry = __ pc(); |
0 | 167 |
168 Label slow; | |
169 | |
170 ExternalAddress counter(SafepointSynchronize::safepoint_counter_addr()); | |
171 __ mov32 (rcounter, counter); | |
304 | 172 __ mov (robj, c_rarg1); |
0 | 173 __ testb (rcounter, 1); |
174 __ jcc (Assembler::notZero, slow); | |
175 if (os::is_MP()) { | |
304 | 176 __ xorptr(robj, rcounter); |
177 __ xorptr(robj, rcounter); // obj, since | |
0 | 178 // robj ^ rcounter ^ rcounter == robj |
179 // robj is data dependent on rcounter. | |
180 } | |
304 | 181 __ movptr(robj, Address(robj, 0)); // *obj |
182 __ mov (roffset, c_rarg2); | |
183 __ shrptr(roffset, 2); // offset | |
0 | 184 |
185 assert(count < LIST_CAPACITY, "LIST_CAPACITY too small"); | |
186 speculative_load_pclist[count] = __ pc(); | |
187 switch (type) { | |
188 case T_FLOAT: __ movflt (xmm0, Address(robj, roffset, Address::times_1)); break; | |
189 case T_DOUBLE: __ movdbl (xmm0, Address(robj, roffset, Address::times_1)); break; | |
190 default: ShouldNotReachHere(); | |
191 } | |
192 | |
193 if (os::is_MP()) { | |
194 __ lea(rcounter_addr, counter); | |
195 __ movdq (rax, xmm0); | |
196 // counter address is data dependent on xmm0. | |
304 | 197 __ xorptr(rcounter_addr, rax); |
198 __ xorptr(rcounter_addr, rax); | |
0 | 199 __ cmpl (rcounter, Address(rcounter_addr, 0)); |
200 } else { | |
201 __ cmp32 (rcounter, counter); | |
202 } | |
203 __ jcc (Assembler::notEqual, slow); | |
204 | |
205 __ ret (0); | |
206 | |
207 slowcase_entry_pclist[count++] = __ pc(); | |
208 __ bind (slow); | |
209 address slow_case_addr; | |
210 switch (type) { | |
211 case T_FLOAT: slow_case_addr = jni_GetFloatField_addr(); break; | |
212 case T_DOUBLE: slow_case_addr = jni_GetDoubleField_addr(); | |
213 } | |
214 // tail call | |
215 __ jump (ExternalAddress(slow_case_addr)); | |
216 | |
217 __ flush (); | |
218 | |
219 return fast_entry; | |
220 } | |
221 | |
222 address JNI_FastGetField::generate_fast_get_float_field() { | |
223 return generate_fast_get_float_field0(T_FLOAT); | |
224 } | |
225 | |
226 address JNI_FastGetField::generate_fast_get_double_field() { | |
227 return generate_fast_get_float_field0(T_DOUBLE); | |
228 } |