Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateTable_x86_32.cpp @ 2480:4b95bbb36464
7035870: JSR 292: Zero support
Summary: This adds support for JSR 292 to Zero.
Reviewed-by: twisti
Contributed-by: Gary Benson <gbenson@redhat.com>
author | twisti |
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date | Tue, 12 Apr 2011 02:40:23 -0700 |
parents | 38fea01eb669 |
children | 92add02409c9 bbe95b4337f1 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, 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/assembler.hpp" |
1972 | 27 #include "interpreter/interpreter.hpp" |
28 #include "interpreter/interpreterRuntime.hpp" | |
29 #include "interpreter/templateTable.hpp" | |
30 #include "memory/universe.inline.hpp" | |
31 #include "oops/methodDataOop.hpp" | |
32 #include "oops/objArrayKlass.hpp" | |
33 #include "oops/oop.inline.hpp" | |
34 #include "prims/methodHandles.hpp" | |
35 #include "runtime/sharedRuntime.hpp" | |
36 #include "runtime/stubRoutines.hpp" | |
37 #include "runtime/synchronizer.hpp" | |
0 | 38 |
39 #ifndef CC_INTERP | |
40 #define __ _masm-> | |
41 | |
42 //---------------------------------------------------------------------------------------------------- | |
43 // Platform-dependent initialization | |
44 | |
45 void TemplateTable::pd_initialize() { | |
46 // No i486 specific initialization | |
47 } | |
48 | |
49 //---------------------------------------------------------------------------------------------------- | |
50 // Address computation | |
51 | |
52 // local variables | |
53 static inline Address iaddress(int n) { | |
54 return Address(rdi, Interpreter::local_offset_in_bytes(n)); | |
55 } | |
56 | |
57 static inline Address laddress(int n) { return iaddress(n + 1); } | |
58 static inline Address haddress(int n) { return iaddress(n + 0); } | |
59 static inline Address faddress(int n) { return iaddress(n); } | |
60 static inline Address daddress(int n) { return laddress(n); } | |
61 static inline Address aaddress(int n) { return iaddress(n); } | |
62 | |
63 static inline Address iaddress(Register r) { | |
1506 | 64 return Address(rdi, r, Interpreter::stackElementScale()); |
0 | 65 } |
66 static inline Address laddress(Register r) { | |
67 return Address(rdi, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(1)); | |
68 } | |
69 static inline Address haddress(Register r) { | |
70 return Address(rdi, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(0)); | |
71 } | |
72 | |
1506 | 73 static inline Address faddress(Register r) { return iaddress(r); } |
74 static inline Address daddress(Register r) { return laddress(r); } | |
75 static inline Address aaddress(Register r) { return iaddress(r); } | |
0 | 76 |
77 // expression stack | |
78 // (Note: Must not use symmetric equivalents at_rsp_m1/2 since they store | |
79 // data beyond the rsp which is potentially unsafe in an MT environment; | |
80 // an interrupt may overwrite that data.) | |
81 static inline Address at_rsp () { | |
82 return Address(rsp, 0); | |
83 } | |
84 | |
85 // At top of Java expression stack which may be different than rsp(). It | |
86 // isn't for category 1 objects. | |
87 static inline Address at_tos () { | |
88 Address tos = Address(rsp, Interpreter::expr_offset_in_bytes(0)); | |
89 return tos; | |
90 } | |
91 | |
92 static inline Address at_tos_p1() { | |
93 return Address(rsp, Interpreter::expr_offset_in_bytes(1)); | |
94 } | |
95 | |
96 static inline Address at_tos_p2() { | |
97 return Address(rsp, Interpreter::expr_offset_in_bytes(2)); | |
98 } | |
99 | |
100 // Condition conversion | |
101 static Assembler::Condition j_not(TemplateTable::Condition cc) { | |
102 switch (cc) { | |
103 case TemplateTable::equal : return Assembler::notEqual; | |
104 case TemplateTable::not_equal : return Assembler::equal; | |
105 case TemplateTable::less : return Assembler::greaterEqual; | |
106 case TemplateTable::less_equal : return Assembler::greater; | |
107 case TemplateTable::greater : return Assembler::lessEqual; | |
108 case TemplateTable::greater_equal: return Assembler::less; | |
109 } | |
110 ShouldNotReachHere(); | |
111 return Assembler::zero; | |
112 } | |
113 | |
114 | |
115 //---------------------------------------------------------------------------------------------------- | |
116 // Miscelaneous helper routines | |
117 | |
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118 // Store an oop (or NULL) at the address described by obj. |
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119 // If val == noreg this means store a NULL |
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120 |
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121 static void do_oop_store(InterpreterMacroAssembler* _masm, |
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122 Address obj, |
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123 Register val, |
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124 BarrierSet::Name barrier, |
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125 bool precise) { |
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126 assert(val == noreg || val == rax, "parameter is just for looks"); |
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127 switch (barrier) { |
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128 #ifndef SERIALGC |
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129 case BarrierSet::G1SATBCT: |
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130 case BarrierSet::G1SATBCTLogging: |
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131 { |
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132 // flatten object address if needed |
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133 // We do it regardless of precise because we need the registers |
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134 if (obj.index() == noreg && obj.disp() == 0) { |
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135 if (obj.base() != rdx) { |
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136 __ movl(rdx, obj.base()); |
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137 } |
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138 } else { |
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139 __ leal(rdx, obj); |
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140 } |
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141 __ get_thread(rcx); |
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142 __ save_bcp(); |
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143 __ g1_write_barrier_pre(rdx, rcx, rsi, rbx, val != noreg); |
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144 |
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145 // Do the actual store |
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146 // noreg means NULL |
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147 if (val == noreg) { |
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148 __ movptr(Address(rdx, 0), NULL_WORD); |
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149 // No post barrier for NULL |
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150 } else { |
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151 __ movl(Address(rdx, 0), val); |
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152 __ g1_write_barrier_post(rdx, rax, rcx, rbx, rsi); |
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153 } |
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154 __ restore_bcp(); |
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155 |
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156 } |
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157 break; |
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158 #endif // SERIALGC |
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159 case BarrierSet::CardTableModRef: |
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160 case BarrierSet::CardTableExtension: |
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161 { |
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162 if (val == noreg) { |
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163 __ movptr(obj, NULL_WORD); |
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164 } else { |
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165 __ movl(obj, val); |
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166 // flatten object address if needed |
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167 if (!precise || (obj.index() == noreg && obj.disp() == 0)) { |
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168 __ store_check(obj.base()); |
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169 } else { |
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170 __ leal(rdx, obj); |
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171 __ store_check(rdx); |
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172 } |
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173 } |
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174 } |
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175 break; |
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176 case BarrierSet::ModRef: |
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177 case BarrierSet::Other: |
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178 if (val == noreg) { |
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179 __ movptr(obj, NULL_WORD); |
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180 } else { |
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181 __ movl(obj, val); |
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182 } |
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183 break; |
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184 default : |
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185 ShouldNotReachHere(); |
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186 |
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187 } |
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188 } |
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189 |
0 | 190 Address TemplateTable::at_bcp(int offset) { |
191 assert(_desc->uses_bcp(), "inconsistent uses_bcp information"); | |
192 return Address(rsi, offset); | |
193 } | |
194 | |
195 | |
196 void TemplateTable::patch_bytecode(Bytecodes::Code bytecode, Register bc, | |
197 Register scratch, | |
198 bool load_bc_into_scratch/*=true*/) { | |
199 | |
200 if (!RewriteBytecodes) return; | |
201 // the pair bytecodes have already done the load. | |
304 | 202 if (load_bc_into_scratch) { |
203 __ movl(bc, bytecode); | |
204 } | |
0 | 205 Label patch_done; |
206 if (JvmtiExport::can_post_breakpoint()) { | |
207 Label fast_patch; | |
208 // if a breakpoint is present we can't rewrite the stream directly | |
304 | 209 __ movzbl(scratch, at_bcp(0)); |
0 | 210 __ cmpl(scratch, Bytecodes::_breakpoint); |
211 __ jcc(Assembler::notEqual, fast_patch); | |
212 __ get_method(scratch); | |
213 // Let breakpoint table handling rewrite to quicker bytecode | |
214 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), scratch, rsi, bc); | |
215 #ifndef ASSERT | |
216 __ jmpb(patch_done); | |
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217 #else |
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218 __ jmp(patch_done); |
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219 #endif |
0 | 220 __ bind(fast_patch); |
221 } | |
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222 #ifdef ASSERT |
0 | 223 Label okay; |
224 __ load_unsigned_byte(scratch, at_bcp(0)); | |
225 __ cmpl(scratch, (int)Bytecodes::java_code(bytecode)); | |
226 __ jccb(Assembler::equal, okay); | |
227 __ cmpl(scratch, bc); | |
228 __ jcc(Assembler::equal, okay); | |
229 __ stop("patching the wrong bytecode"); | |
230 __ bind(okay); | |
231 #endif | |
232 // patch bytecode | |
233 __ movb(at_bcp(0), bc); | |
234 __ bind(patch_done); | |
235 } | |
236 | |
237 //---------------------------------------------------------------------------------------------------- | |
238 // Individual instructions | |
239 | |
240 void TemplateTable::nop() { | |
241 transition(vtos, vtos); | |
242 // nothing to do | |
243 } | |
244 | |
245 void TemplateTable::shouldnotreachhere() { | |
246 transition(vtos, vtos); | |
247 __ stop("shouldnotreachhere bytecode"); | |
248 } | |
249 | |
250 | |
251 | |
252 void TemplateTable::aconst_null() { | |
253 transition(vtos, atos); | |
304 | 254 __ xorptr(rax, rax); |
0 | 255 } |
256 | |
257 | |
258 void TemplateTable::iconst(int value) { | |
259 transition(vtos, itos); | |
260 if (value == 0) { | |
304 | 261 __ xorptr(rax, rax); |
0 | 262 } else { |
304 | 263 __ movptr(rax, value); |
0 | 264 } |
265 } | |
266 | |
267 | |
268 void TemplateTable::lconst(int value) { | |
269 transition(vtos, ltos); | |
270 if (value == 0) { | |
304 | 271 __ xorptr(rax, rax); |
0 | 272 } else { |
304 | 273 __ movptr(rax, value); |
0 | 274 } |
275 assert(value >= 0, "check this code"); | |
304 | 276 __ xorptr(rdx, rdx); |
0 | 277 } |
278 | |
279 | |
280 void TemplateTable::fconst(int value) { | |
281 transition(vtos, ftos); | |
282 if (value == 0) { __ fldz(); | |
283 } else if (value == 1) { __ fld1(); | |
284 } else if (value == 2) { __ fld1(); __ fld1(); __ faddp(); // should do a better solution here | |
285 } else { ShouldNotReachHere(); | |
286 } | |
287 } | |
288 | |
289 | |
290 void TemplateTable::dconst(int value) { | |
291 transition(vtos, dtos); | |
292 if (value == 0) { __ fldz(); | |
293 } else if (value == 1) { __ fld1(); | |
294 } else { ShouldNotReachHere(); | |
295 } | |
296 } | |
297 | |
298 | |
299 void TemplateTable::bipush() { | |
300 transition(vtos, itos); | |
301 __ load_signed_byte(rax, at_bcp(1)); | |
302 } | |
303 | |
304 | |
305 void TemplateTable::sipush() { | |
306 transition(vtos, itos); | |
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307 __ load_unsigned_short(rax, at_bcp(1)); |
304 | 308 __ bswapl(rax); |
0 | 309 __ sarl(rax, 16); |
310 } | |
311 | |
312 void TemplateTable::ldc(bool wide) { | |
313 transition(vtos, vtos); | |
314 Label call_ldc, notFloat, notClass, Done; | |
315 | |
316 if (wide) { | |
317 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
318 } else { | |
319 __ load_unsigned_byte(rbx, at_bcp(1)); | |
320 } | |
321 __ get_cpool_and_tags(rcx, rax); | |
322 const int base_offset = constantPoolOopDesc::header_size() * wordSize; | |
323 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
324 | |
325 // get type | |
304 | 326 __ xorptr(rdx, rdx); |
0 | 327 __ movb(rdx, Address(rax, rbx, Address::times_1, tags_offset)); |
328 | |
329 // unresolved string - get the resolved string | |
330 __ cmpl(rdx, JVM_CONSTANT_UnresolvedString); | |
331 __ jccb(Assembler::equal, call_ldc); | |
332 | |
333 // unresolved class - get the resolved class | |
334 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClass); | |
335 __ jccb(Assembler::equal, call_ldc); | |
336 | |
337 // unresolved class in error (resolution failed) - call into runtime | |
338 // so that the same error from first resolution attempt is thrown. | |
339 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClassInError); | |
340 __ jccb(Assembler::equal, call_ldc); | |
341 | |
342 // resolved class - need to call vm to get java mirror of the class | |
343 __ cmpl(rdx, JVM_CONSTANT_Class); | |
344 __ jcc(Assembler::notEqual, notClass); | |
345 | |
346 __ bind(call_ldc); | |
347 __ movl(rcx, wide); | |
348 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), rcx); | |
349 __ push(atos); | |
350 __ jmp(Done); | |
351 | |
352 __ bind(notClass); | |
353 __ cmpl(rdx, JVM_CONSTANT_Float); | |
354 __ jccb(Assembler::notEqual, notFloat); | |
355 // ftos | |
304 | 356 __ fld_s( Address(rcx, rbx, Address::times_ptr, base_offset)); |
0 | 357 __ push(ftos); |
358 __ jmp(Done); | |
359 | |
360 __ bind(notFloat); | |
361 #ifdef ASSERT | |
362 { Label L; | |
363 __ cmpl(rdx, JVM_CONSTANT_Integer); | |
364 __ jcc(Assembler::equal, L); | |
365 __ cmpl(rdx, JVM_CONSTANT_String); | |
366 __ jcc(Assembler::equal, L); | |
367 __ stop("unexpected tag type in ldc"); | |
368 __ bind(L); | |
369 } | |
370 #endif | |
371 Label isOop; | |
372 // atos and itos | |
373 // String is only oop type we will see here | |
374 __ cmpl(rdx, JVM_CONSTANT_String); | |
375 __ jccb(Assembler::equal, isOop); | |
304 | 376 __ movl(rax, Address(rcx, rbx, Address::times_ptr, base_offset)); |
0 | 377 __ push(itos); |
378 __ jmp(Done); | |
379 __ bind(isOop); | |
304 | 380 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, base_offset)); |
0 | 381 __ push(atos); |
382 | |
383 if (VerifyOops) { | |
384 __ verify_oop(rax); | |
385 } | |
386 __ bind(Done); | |
387 } | |
388 | |
1602 | 389 // Fast path for caching oop constants. |
390 // %%% We should use this to handle Class and String constants also. | |
391 // %%% It will simplify the ldc/primitive path considerably. | |
392 void TemplateTable::fast_aldc(bool wide) { | |
393 transition(vtos, atos); | |
394 | |
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395 if (!EnableInvokeDynamic) { |
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396 // We should not encounter this bytecode if !EnableInvokeDynamic. |
1602 | 397 // The verifier will stop it. However, if we get past the verifier, |
398 // this will stop the thread in a reasonable way, without crashing the JVM. | |
399 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
400 InterpreterRuntime::throw_IncompatibleClassChangeError)); | |
401 // the call_VM checks for exception, so we should never return here. | |
402 __ should_not_reach_here(); | |
403 return; | |
404 } | |
405 | |
406 const Register cache = rcx; | |
407 const Register index = rdx; | |
408 | |
409 resolve_cache_and_index(f1_oop, rax, cache, index, wide ? sizeof(u2) : sizeof(u1)); | |
410 if (VerifyOops) { | |
411 __ verify_oop(rax); | |
412 } | |
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413 |
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414 Label L_done, L_throw_exception; |
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415 const Register con_klass_temp = rcx; // same as Rcache |
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416 __ movptr(con_klass_temp, Address(rax, oopDesc::klass_offset_in_bytes())); |
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417 __ cmpptr(con_klass_temp, ExternalAddress((address)Universe::systemObjArrayKlassObj_addr())); |
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418 __ jcc(Assembler::notEqual, L_done); |
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419 __ cmpl(Address(rax, arrayOopDesc::length_offset_in_bytes()), 0); |
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420 __ jcc(Assembler::notEqual, L_throw_exception); |
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421 __ xorptr(rax, rax); |
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422 __ jmp(L_done); |
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423 |
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424 // Load the exception from the system-array which wraps it: |
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425 __ bind(L_throw_exception); |
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426 __ movptr(rax, Address(rax, arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
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427 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); |
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428 |
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429 __ bind(L_done); |
1602 | 430 } |
431 | |
0 | 432 void TemplateTable::ldc2_w() { |
433 transition(vtos, vtos); | |
434 Label Long, Done; | |
435 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
436 | |
437 __ get_cpool_and_tags(rcx, rax); | |
438 const int base_offset = constantPoolOopDesc::header_size() * wordSize; | |
439 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
440 | |
441 // get type | |
442 __ cmpb(Address(rax, rbx, Address::times_1, tags_offset), JVM_CONSTANT_Double); | |
443 __ jccb(Assembler::notEqual, Long); | |
444 // dtos | |
304 | 445 __ fld_d( Address(rcx, rbx, Address::times_ptr, base_offset)); |
0 | 446 __ push(dtos); |
447 __ jmpb(Done); | |
448 | |
449 __ bind(Long); | |
450 // ltos | |
304 | 451 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, base_offset + 0 * wordSize)); |
452 NOT_LP64(__ movptr(rdx, Address(rcx, rbx, Address::times_ptr, base_offset + 1 * wordSize))); | |
0 | 453 |
454 __ push(ltos); | |
455 | |
456 __ bind(Done); | |
457 } | |
458 | |
459 | |
460 void TemplateTable::locals_index(Register reg, int offset) { | |
461 __ load_unsigned_byte(reg, at_bcp(offset)); | |
304 | 462 __ negptr(reg); |
0 | 463 } |
464 | |
465 | |
466 void TemplateTable::iload() { | |
467 transition(vtos, itos); | |
468 if (RewriteFrequentPairs) { | |
469 Label rewrite, done; | |
470 | |
471 // get next byte | |
472 __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_iload))); | |
473 // if _iload, wait to rewrite to iload2. We only want to rewrite the | |
474 // last two iloads in a pair. Comparing against fast_iload means that | |
475 // the next bytecode is neither an iload or a caload, and therefore | |
476 // an iload pair. | |
477 __ cmpl(rbx, Bytecodes::_iload); | |
478 __ jcc(Assembler::equal, done); | |
479 | |
480 __ cmpl(rbx, Bytecodes::_fast_iload); | |
481 __ movl(rcx, Bytecodes::_fast_iload2); | |
482 __ jccb(Assembler::equal, rewrite); | |
483 | |
484 // if _caload, rewrite to fast_icaload | |
485 __ cmpl(rbx, Bytecodes::_caload); | |
486 __ movl(rcx, Bytecodes::_fast_icaload); | |
487 __ jccb(Assembler::equal, rewrite); | |
488 | |
489 // rewrite so iload doesn't check again. | |
490 __ movl(rcx, Bytecodes::_fast_iload); | |
491 | |
492 // rewrite | |
493 // rcx: fast bytecode | |
494 __ bind(rewrite); | |
495 patch_bytecode(Bytecodes::_iload, rcx, rbx, false); | |
496 __ bind(done); | |
497 } | |
498 | |
499 // Get the local value into tos | |
500 locals_index(rbx); | |
501 __ movl(rax, iaddress(rbx)); | |
502 } | |
503 | |
504 | |
505 void TemplateTable::fast_iload2() { | |
506 transition(vtos, itos); | |
507 locals_index(rbx); | |
508 __ movl(rax, iaddress(rbx)); | |
509 __ push(itos); | |
510 locals_index(rbx, 3); | |
511 __ movl(rax, iaddress(rbx)); | |
512 } | |
513 | |
514 void TemplateTable::fast_iload() { | |
515 transition(vtos, itos); | |
516 locals_index(rbx); | |
517 __ movl(rax, iaddress(rbx)); | |
518 } | |
519 | |
520 | |
521 void TemplateTable::lload() { | |
522 transition(vtos, ltos); | |
523 locals_index(rbx); | |
304 | 524 __ movptr(rax, laddress(rbx)); |
525 NOT_LP64(__ movl(rdx, haddress(rbx))); | |
0 | 526 } |
527 | |
528 | |
529 void TemplateTable::fload() { | |
530 transition(vtos, ftos); | |
531 locals_index(rbx); | |
532 __ fld_s(faddress(rbx)); | |
533 } | |
534 | |
535 | |
536 void TemplateTable::dload() { | |
537 transition(vtos, dtos); | |
538 locals_index(rbx); | |
1506 | 539 __ fld_d(daddress(rbx)); |
0 | 540 } |
541 | |
542 | |
543 void TemplateTable::aload() { | |
544 transition(vtos, atos); | |
545 locals_index(rbx); | |
304 | 546 __ movptr(rax, aaddress(rbx)); |
0 | 547 } |
548 | |
549 | |
550 void TemplateTable::locals_index_wide(Register reg) { | |
551 __ movl(reg, at_bcp(2)); | |
304 | 552 __ bswapl(reg); |
0 | 553 __ shrl(reg, 16); |
304 | 554 __ negptr(reg); |
0 | 555 } |
556 | |
557 | |
558 void TemplateTable::wide_iload() { | |
559 transition(vtos, itos); | |
560 locals_index_wide(rbx); | |
561 __ movl(rax, iaddress(rbx)); | |
562 } | |
563 | |
564 | |
565 void TemplateTable::wide_lload() { | |
566 transition(vtos, ltos); | |
567 locals_index_wide(rbx); | |
304 | 568 __ movptr(rax, laddress(rbx)); |
569 NOT_LP64(__ movl(rdx, haddress(rbx))); | |
0 | 570 } |
571 | |
572 | |
573 void TemplateTable::wide_fload() { | |
574 transition(vtos, ftos); | |
575 locals_index_wide(rbx); | |
576 __ fld_s(faddress(rbx)); | |
577 } | |
578 | |
579 | |
580 void TemplateTable::wide_dload() { | |
581 transition(vtos, dtos); | |
582 locals_index_wide(rbx); | |
1506 | 583 __ fld_d(daddress(rbx)); |
0 | 584 } |
585 | |
586 | |
587 void TemplateTable::wide_aload() { | |
588 transition(vtos, atos); | |
589 locals_index_wide(rbx); | |
304 | 590 __ movptr(rax, aaddress(rbx)); |
0 | 591 } |
592 | |
593 void TemplateTable::index_check(Register array, Register index) { | |
594 // Pop ptr into array | |
595 __ pop_ptr(array); | |
596 index_check_without_pop(array, index); | |
597 } | |
598 | |
599 void TemplateTable::index_check_without_pop(Register array, Register index) { | |
600 // destroys rbx, | |
601 // check array | |
602 __ null_check(array, arrayOopDesc::length_offset_in_bytes()); | |
304 | 603 LP64_ONLY(__ movslq(index, index)); |
0 | 604 // check index |
605 __ cmpl(index, Address(array, arrayOopDesc::length_offset_in_bytes())); | |
606 if (index != rbx) { | |
607 // ??? convention: move aberrant index into rbx, for exception message | |
608 assert(rbx != array, "different registers"); | |
304 | 609 __ mov(rbx, index); |
0 | 610 } |
611 __ jump_cc(Assembler::aboveEqual, | |
612 ExternalAddress(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry)); | |
613 } | |
614 | |
615 | |
616 void TemplateTable::iaload() { | |
617 transition(itos, itos); | |
618 // rdx: array | |
619 index_check(rdx, rax); // kills rbx, | |
620 // rax,: index | |
621 __ movl(rax, Address(rdx, rax, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_INT))); | |
622 } | |
623 | |
624 | |
625 void TemplateTable::laload() { | |
626 transition(itos, ltos); | |
627 // rax,: index | |
628 // rdx: array | |
629 index_check(rdx, rax); | |
304 | 630 __ mov(rbx, rax); |
0 | 631 // rbx,: index |
304 | 632 __ movptr(rax, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize)); |
633 NOT_LP64(__ movl(rdx, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize))); | |
0 | 634 } |
635 | |
636 | |
637 void TemplateTable::faload() { | |
638 transition(itos, ftos); | |
639 // rdx: array | |
640 index_check(rdx, rax); // kills rbx, | |
641 // rax,: index | |
642 __ fld_s(Address(rdx, rax, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT))); | |
643 } | |
644 | |
645 | |
646 void TemplateTable::daload() { | |
647 transition(itos, dtos); | |
648 // rdx: array | |
649 index_check(rdx, rax); // kills rbx, | |
650 // rax,: index | |
651 __ fld_d(Address(rdx, rax, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); | |
652 } | |
653 | |
654 | |
655 void TemplateTable::aaload() { | |
656 transition(itos, atos); | |
657 // rdx: array | |
658 index_check(rdx, rax); // kills rbx, | |
659 // rax,: index | |
304 | 660 __ movptr(rax, Address(rdx, rax, Address::times_ptr, arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
0 | 661 } |
662 | |
663 | |
664 void TemplateTable::baload() { | |
665 transition(itos, itos); | |
666 // rdx: array | |
667 index_check(rdx, rax); // kills rbx, | |
668 // rax,: index | |
669 // can do better code for P5 - fix this at some point | |
670 __ load_signed_byte(rbx, Address(rdx, rax, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE))); | |
304 | 671 __ mov(rax, rbx); |
0 | 672 } |
673 | |
674 | |
675 void TemplateTable::caload() { | |
676 transition(itos, itos); | |
677 // rdx: array | |
678 index_check(rdx, rax); // kills rbx, | |
679 // rax,: index | |
680 // can do better code for P5 - may want to improve this at some point | |
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681 __ load_unsigned_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
304 | 682 __ mov(rax, rbx); |
0 | 683 } |
684 | |
685 // iload followed by caload frequent pair | |
686 void TemplateTable::fast_icaload() { | |
687 transition(vtos, itos); | |
688 // load index out of locals | |
689 locals_index(rbx); | |
690 __ movl(rax, iaddress(rbx)); | |
691 | |
692 // rdx: array | |
693 index_check(rdx, rax); | |
694 // rax,: index | |
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695 __ load_unsigned_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
304 | 696 __ mov(rax, rbx); |
0 | 697 } |
698 | |
699 void TemplateTable::saload() { | |
700 transition(itos, itos); | |
701 // rdx: array | |
702 index_check(rdx, rax); // kills rbx, | |
703 // rax,: index | |
704 // can do better code for P5 - may want to improve this at some point | |
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705 __ load_signed_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_SHORT))); |
304 | 706 __ mov(rax, rbx); |
0 | 707 } |
708 | |
709 | |
710 void TemplateTable::iload(int n) { | |
711 transition(vtos, itos); | |
712 __ movl(rax, iaddress(n)); | |
713 } | |
714 | |
715 | |
716 void TemplateTable::lload(int n) { | |
717 transition(vtos, ltos); | |
304 | 718 __ movptr(rax, laddress(n)); |
719 NOT_LP64(__ movptr(rdx, haddress(n))); | |
0 | 720 } |
721 | |
722 | |
723 void TemplateTable::fload(int n) { | |
724 transition(vtos, ftos); | |
725 __ fld_s(faddress(n)); | |
726 } | |
727 | |
728 | |
729 void TemplateTable::dload(int n) { | |
730 transition(vtos, dtos); | |
1506 | 731 __ fld_d(daddress(n)); |
0 | 732 } |
733 | |
734 | |
735 void TemplateTable::aload(int n) { | |
736 transition(vtos, atos); | |
304 | 737 __ movptr(rax, aaddress(n)); |
0 | 738 } |
739 | |
740 | |
741 void TemplateTable::aload_0() { | |
742 transition(vtos, atos); | |
743 // According to bytecode histograms, the pairs: | |
744 // | |
745 // _aload_0, _fast_igetfield | |
746 // _aload_0, _fast_agetfield | |
747 // _aload_0, _fast_fgetfield | |
748 // | |
749 // occur frequently. If RewriteFrequentPairs is set, the (slow) _aload_0 | |
750 // bytecode checks if the next bytecode is either _fast_igetfield, | |
751 // _fast_agetfield or _fast_fgetfield and then rewrites the | |
752 // current bytecode into a pair bytecode; otherwise it rewrites the current | |
753 // bytecode into _fast_aload_0 that doesn't do the pair check anymore. | |
754 // | |
755 // Note: If the next bytecode is _getfield, the rewrite must be delayed, | |
756 // otherwise we may miss an opportunity for a pair. | |
757 // | |
758 // Also rewrite frequent pairs | |
759 // aload_0, aload_1 | |
760 // aload_0, iload_1 | |
761 // These bytecodes with a small amount of code are most profitable to rewrite | |
762 if (RewriteFrequentPairs) { | |
763 Label rewrite, done; | |
764 // get next byte | |
765 __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_aload_0))); | |
766 | |
767 // do actual aload_0 | |
768 aload(0); | |
769 | |
770 // if _getfield then wait with rewrite | |
771 __ cmpl(rbx, Bytecodes::_getfield); | |
772 __ jcc(Assembler::equal, done); | |
773 | |
774 // if _igetfield then reqrite to _fast_iaccess_0 | |
775 assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
776 __ cmpl(rbx, Bytecodes::_fast_igetfield); | |
777 __ movl(rcx, Bytecodes::_fast_iaccess_0); | |
778 __ jccb(Assembler::equal, rewrite); | |
779 | |
780 // if _agetfield then reqrite to _fast_aaccess_0 | |
781 assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
782 __ cmpl(rbx, Bytecodes::_fast_agetfield); | |
783 __ movl(rcx, Bytecodes::_fast_aaccess_0); | |
784 __ jccb(Assembler::equal, rewrite); | |
785 | |
786 // if _fgetfield then reqrite to _fast_faccess_0 | |
787 assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
788 __ cmpl(rbx, Bytecodes::_fast_fgetfield); | |
789 __ movl(rcx, Bytecodes::_fast_faccess_0); | |
790 __ jccb(Assembler::equal, rewrite); | |
791 | |
792 // else rewrite to _fast_aload0 | |
793 assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
794 __ movl(rcx, Bytecodes::_fast_aload_0); | |
795 | |
796 // rewrite | |
797 // rcx: fast bytecode | |
798 __ bind(rewrite); | |
799 patch_bytecode(Bytecodes::_aload_0, rcx, rbx, false); | |
800 | |
801 __ bind(done); | |
802 } else { | |
803 aload(0); | |
804 } | |
805 } | |
806 | |
807 void TemplateTable::istore() { | |
808 transition(itos, vtos); | |
809 locals_index(rbx); | |
810 __ movl(iaddress(rbx), rax); | |
811 } | |
812 | |
813 | |
814 void TemplateTable::lstore() { | |
815 transition(ltos, vtos); | |
816 locals_index(rbx); | |
304 | 817 __ movptr(laddress(rbx), rax); |
818 NOT_LP64(__ movptr(haddress(rbx), rdx)); | |
0 | 819 } |
820 | |
821 | |
822 void TemplateTable::fstore() { | |
823 transition(ftos, vtos); | |
824 locals_index(rbx); | |
825 __ fstp_s(faddress(rbx)); | |
826 } | |
827 | |
828 | |
829 void TemplateTable::dstore() { | |
830 transition(dtos, vtos); | |
831 locals_index(rbx); | |
1506 | 832 __ fstp_d(daddress(rbx)); |
0 | 833 } |
834 | |
835 | |
836 void TemplateTable::astore() { | |
837 transition(vtos, vtos); | |
1506 | 838 __ pop_ptr(rax); |
0 | 839 locals_index(rbx); |
304 | 840 __ movptr(aaddress(rbx), rax); |
0 | 841 } |
842 | |
843 | |
844 void TemplateTable::wide_istore() { | |
845 transition(vtos, vtos); | |
846 __ pop_i(rax); | |
847 locals_index_wide(rbx); | |
848 __ movl(iaddress(rbx), rax); | |
849 } | |
850 | |
851 | |
852 void TemplateTable::wide_lstore() { | |
853 transition(vtos, vtos); | |
854 __ pop_l(rax, rdx); | |
855 locals_index_wide(rbx); | |
304 | 856 __ movptr(laddress(rbx), rax); |
857 NOT_LP64(__ movl(haddress(rbx), rdx)); | |
0 | 858 } |
859 | |
860 | |
861 void TemplateTable::wide_fstore() { | |
862 wide_istore(); | |
863 } | |
864 | |
865 | |
866 void TemplateTable::wide_dstore() { | |
867 wide_lstore(); | |
868 } | |
869 | |
870 | |
871 void TemplateTable::wide_astore() { | |
872 transition(vtos, vtos); | |
1506 | 873 __ pop_ptr(rax); |
0 | 874 locals_index_wide(rbx); |
304 | 875 __ movptr(aaddress(rbx), rax); |
0 | 876 } |
877 | |
878 | |
879 void TemplateTable::iastore() { | |
880 transition(itos, vtos); | |
881 __ pop_i(rbx); | |
882 // rax,: value | |
883 // rdx: array | |
884 index_check(rdx, rbx); // prefer index in rbx, | |
885 // rbx,: index | |
886 __ movl(Address(rdx, rbx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_INT)), rax); | |
887 } | |
888 | |
889 | |
890 void TemplateTable::lastore() { | |
891 transition(ltos, vtos); | |
892 __ pop_i(rbx); | |
893 // rax,: low(value) | |
894 // rcx: array | |
895 // rdx: high(value) | |
896 index_check(rcx, rbx); // prefer index in rbx, | |
897 // rbx,: index | |
304 | 898 __ movptr(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize), rax); |
899 NOT_LP64(__ movl(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize), rdx)); | |
0 | 900 } |
901 | |
902 | |
903 void TemplateTable::fastore() { | |
904 transition(ftos, vtos); | |
905 __ pop_i(rbx); | |
906 // rdx: array | |
907 // st0: value | |
908 index_check(rdx, rbx); // prefer index in rbx, | |
909 // rbx,: index | |
910 __ fstp_s(Address(rdx, rbx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT))); | |
911 } | |
912 | |
913 | |
914 void TemplateTable::dastore() { | |
915 transition(dtos, vtos); | |
916 __ pop_i(rbx); | |
917 // rdx: array | |
918 // st0: value | |
919 index_check(rdx, rbx); // prefer index in rbx, | |
920 // rbx,: index | |
921 __ fstp_d(Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); | |
922 } | |
923 | |
924 | |
925 void TemplateTable::aastore() { | |
926 Label is_null, ok_is_subtype, done; | |
927 transition(vtos, vtos); | |
928 // stack: ..., array, index, value | |
304 | 929 __ movptr(rax, at_tos()); // Value |
0 | 930 __ movl(rcx, at_tos_p1()); // Index |
304 | 931 __ movptr(rdx, at_tos_p2()); // Array |
342
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932 |
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933 Address element_address(rdx, rcx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_OBJECT)); |
0 | 934 index_check_without_pop(rdx, rcx); // kills rbx, |
935 // do array store check - check for NULL value first | |
304 | 936 __ testptr(rax, rax); |
0 | 937 __ jcc(Assembler::zero, is_null); |
938 | |
939 // Move subklass into EBX | |
304 | 940 __ movptr(rbx, Address(rax, oopDesc::klass_offset_in_bytes())); |
0 | 941 // Move superklass into EAX |
304 | 942 __ movptr(rax, Address(rdx, oopDesc::klass_offset_in_bytes())); |
943 __ movptr(rax, Address(rax, sizeof(oopDesc) + objArrayKlass::element_klass_offset_in_bytes())); | |
944 // Compress array+index*wordSize+12 into a single register. Frees ECX. | |
362 | 945 __ lea(rdx, element_address); |
0 | 946 |
947 // Generate subtype check. Blows ECX. Resets EDI to locals. | |
948 // Superklass in EAX. Subklass in EBX. | |
949 __ gen_subtype_check( rbx, ok_is_subtype ); | |
950 | |
951 // Come here on failure | |
952 // object is at TOS | |
953 __ jump(ExternalAddress(Interpreter::_throw_ArrayStoreException_entry)); | |
954 | |
955 // Come here on success | |
956 __ bind(ok_is_subtype); | |
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957 |
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958 // Get the value to store |
362 | 959 __ movptr(rax, at_rsp()); |
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960 // and store it with appropriate barrier |
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961 do_oop_store(_masm, Address(rdx, 0), rax, _bs->kind(), true); |
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962 |
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963 __ jmp(done); |
0 | 964 |
965 // Have a NULL in EAX, EDX=array, ECX=index. Store NULL at ary[idx] | |
966 __ bind(is_null); | |
967 __ profile_null_seen(rbx); | |
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968 |
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969 // Store NULL, (noreg means NULL to do_oop_store) |
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970 do_oop_store(_masm, element_address, noreg, _bs->kind(), true); |
0 | 971 |
972 // Pop stack arguments | |
973 __ bind(done); | |
1506 | 974 __ addptr(rsp, 3 * Interpreter::stackElementSize); |
0 | 975 } |
976 | |
977 | |
978 void TemplateTable::bastore() { | |
979 transition(itos, vtos); | |
980 __ pop_i(rbx); | |
981 // rax,: value | |
982 // rdx: array | |
983 index_check(rdx, rbx); // prefer index in rbx, | |
984 // rbx,: index | |
985 __ movb(Address(rdx, rbx, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE)), rax); | |
986 } | |
987 | |
988 | |
989 void TemplateTable::castore() { | |
990 transition(itos, vtos); | |
991 __ pop_i(rbx); | |
992 // rax,: value | |
993 // rdx: array | |
994 index_check(rdx, rbx); // prefer index in rbx, | |
995 // rbx,: index | |
996 __ movw(Address(rdx, rbx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)), rax); | |
997 } | |
998 | |
999 | |
1000 void TemplateTable::sastore() { | |
1001 castore(); | |
1002 } | |
1003 | |
1004 | |
1005 void TemplateTable::istore(int n) { | |
1006 transition(itos, vtos); | |
1007 __ movl(iaddress(n), rax); | |
1008 } | |
1009 | |
1010 | |
1011 void TemplateTable::lstore(int n) { | |
1012 transition(ltos, vtos); | |
304 | 1013 __ movptr(laddress(n), rax); |
1014 NOT_LP64(__ movptr(haddress(n), rdx)); | |
0 | 1015 } |
1016 | |
1017 | |
1018 void TemplateTable::fstore(int n) { | |
1019 transition(ftos, vtos); | |
1020 __ fstp_s(faddress(n)); | |
1021 } | |
1022 | |
1023 | |
1024 void TemplateTable::dstore(int n) { | |
1025 transition(dtos, vtos); | |
1506 | 1026 __ fstp_d(daddress(n)); |
0 | 1027 } |
1028 | |
1029 | |
1030 void TemplateTable::astore(int n) { | |
1031 transition(vtos, vtos); | |
1506 | 1032 __ pop_ptr(rax); |
304 | 1033 __ movptr(aaddress(n), rax); |
0 | 1034 } |
1035 | |
1036 | |
1037 void TemplateTable::pop() { | |
1038 transition(vtos, vtos); | |
1506 | 1039 __ addptr(rsp, Interpreter::stackElementSize); |
0 | 1040 } |
1041 | |
1042 | |
1043 void TemplateTable::pop2() { | |
1044 transition(vtos, vtos); | |
1506 | 1045 __ addptr(rsp, 2*Interpreter::stackElementSize); |
0 | 1046 } |
1047 | |
1048 | |
1049 void TemplateTable::dup() { | |
1050 transition(vtos, vtos); | |
1051 // stack: ..., a | |
1506 | 1052 __ load_ptr(0, rax); |
1053 __ push_ptr(rax); | |
0 | 1054 // stack: ..., a, a |
1055 } | |
1056 | |
1057 | |
1058 void TemplateTable::dup_x1() { | |
1059 transition(vtos, vtos); | |
1060 // stack: ..., a, b | |
1506 | 1061 __ load_ptr( 0, rax); // load b |
1062 __ load_ptr( 1, rcx); // load a | |
1063 __ store_ptr(1, rax); // store b | |
1064 __ store_ptr(0, rcx); // store a | |
1065 __ push_ptr(rax); // push b | |
0 | 1066 // stack: ..., b, a, b |
1067 } | |
1068 | |
1069 | |
1070 void TemplateTable::dup_x2() { | |
1071 transition(vtos, vtos); | |
1072 // stack: ..., a, b, c | |
1506 | 1073 __ load_ptr( 0, rax); // load c |
1074 __ load_ptr( 2, rcx); // load a | |
1075 __ store_ptr(2, rax); // store c in a | |
1076 __ push_ptr(rax); // push c | |
0 | 1077 // stack: ..., c, b, c, c |
1506 | 1078 __ load_ptr( 2, rax); // load b |
1079 __ store_ptr(2, rcx); // store a in b | |
0 | 1080 // stack: ..., c, a, c, c |
1506 | 1081 __ store_ptr(1, rax); // store b in c |
0 | 1082 // stack: ..., c, a, b, c |
1083 } | |
1084 | |
1085 | |
1086 void TemplateTable::dup2() { | |
1087 transition(vtos, vtos); | |
1088 // stack: ..., a, b | |
1506 | 1089 __ load_ptr(1, rax); // load a |
1090 __ push_ptr(rax); // push a | |
1091 __ load_ptr(1, rax); // load b | |
1092 __ push_ptr(rax); // push b | |
0 | 1093 // stack: ..., a, b, a, b |
1094 } | |
1095 | |
1096 | |
1097 void TemplateTable::dup2_x1() { | |
1098 transition(vtos, vtos); | |
1099 // stack: ..., a, b, c | |
1506 | 1100 __ load_ptr( 0, rcx); // load c |
1101 __ load_ptr( 1, rax); // load b | |
1102 __ push_ptr(rax); // push b | |
1103 __ push_ptr(rcx); // push c | |
0 | 1104 // stack: ..., a, b, c, b, c |
1506 | 1105 __ store_ptr(3, rcx); // store c in b |
0 | 1106 // stack: ..., a, c, c, b, c |
1506 | 1107 __ load_ptr( 4, rcx); // load a |
1108 __ store_ptr(2, rcx); // store a in 2nd c | |
0 | 1109 // stack: ..., a, c, a, b, c |
1506 | 1110 __ store_ptr(4, rax); // store b in a |
0 | 1111 // stack: ..., b, c, a, b, c |
1112 // stack: ..., b, c, a, b, c | |
1113 } | |
1114 | |
1115 | |
1116 void TemplateTable::dup2_x2() { | |
1117 transition(vtos, vtos); | |
1118 // stack: ..., a, b, c, d | |
1506 | 1119 __ load_ptr( 0, rcx); // load d |
1120 __ load_ptr( 1, rax); // load c | |
1121 __ push_ptr(rax); // push c | |
1122 __ push_ptr(rcx); // push d | |
0 | 1123 // stack: ..., a, b, c, d, c, d |
1506 | 1124 __ load_ptr( 4, rax); // load b |
1125 __ store_ptr(2, rax); // store b in d | |
1126 __ store_ptr(4, rcx); // store d in b | |
0 | 1127 // stack: ..., a, d, c, b, c, d |
1506 | 1128 __ load_ptr( 5, rcx); // load a |
1129 __ load_ptr( 3, rax); // load c | |
1130 __ store_ptr(3, rcx); // store a in c | |
1131 __ store_ptr(5, rax); // store c in a | |
0 | 1132 // stack: ..., c, d, a, b, c, d |
1133 // stack: ..., c, d, a, b, c, d | |
1134 } | |
1135 | |
1136 | |
1137 void TemplateTable::swap() { | |
1138 transition(vtos, vtos); | |
1139 // stack: ..., a, b | |
1506 | 1140 __ load_ptr( 1, rcx); // load a |
1141 __ load_ptr( 0, rax); // load b | |
1142 __ store_ptr(0, rcx); // store a in b | |
1143 __ store_ptr(1, rax); // store b in a | |
0 | 1144 // stack: ..., b, a |
1145 } | |
1146 | |
1147 | |
1148 void TemplateTable::iop2(Operation op) { | |
1149 transition(itos, itos); | |
1150 switch (op) { | |
1506 | 1151 case add : __ pop_i(rdx); __ addl (rax, rdx); break; |
304 | 1152 case sub : __ mov(rdx, rax); __ pop_i(rax); __ subl (rax, rdx); break; |
1506 | 1153 case mul : __ pop_i(rdx); __ imull(rax, rdx); break; |
1154 case _and : __ pop_i(rdx); __ andl (rax, rdx); break; | |
1155 case _or : __ pop_i(rdx); __ orl (rax, rdx); break; | |
1156 case _xor : __ pop_i(rdx); __ xorl (rax, rdx); break; | |
304 | 1157 case shl : __ mov(rcx, rax); __ pop_i(rax); __ shll (rax); break; // implicit masking of lower 5 bits by Intel shift instr. |
1158 case shr : __ mov(rcx, rax); __ pop_i(rax); __ sarl (rax); break; // implicit masking of lower 5 bits by Intel shift instr. | |
1159 case ushr : __ mov(rcx, rax); __ pop_i(rax); __ shrl (rax); break; // implicit masking of lower 5 bits by Intel shift instr. | |
0 | 1160 default : ShouldNotReachHere(); |
1161 } | |
1162 } | |
1163 | |
1164 | |
1165 void TemplateTable::lop2(Operation op) { | |
1166 transition(ltos, ltos); | |
1167 __ pop_l(rbx, rcx); | |
1168 switch (op) { | |
1506 | 1169 case add : __ addl(rax, rbx); __ adcl(rdx, rcx); break; |
1170 case sub : __ subl(rbx, rax); __ sbbl(rcx, rdx); | |
1171 __ mov (rax, rbx); __ mov (rdx, rcx); break; | |
1172 case _and : __ andl(rax, rbx); __ andl(rdx, rcx); break; | |
1173 case _or : __ orl (rax, rbx); __ orl (rdx, rcx); break; | |
1174 case _xor : __ xorl(rax, rbx); __ xorl(rdx, rcx); break; | |
1175 default : ShouldNotReachHere(); | |
0 | 1176 } |
1177 } | |
1178 | |
1179 | |
1180 void TemplateTable::idiv() { | |
1181 transition(itos, itos); | |
304 | 1182 __ mov(rcx, rax); |
0 | 1183 __ pop_i(rax); |
1184 // Note: could xor rax, and rcx and compare with (-1 ^ min_int). If | |
1185 // they are not equal, one could do a normal division (no correction | |
1186 // needed), which may speed up this implementation for the common case. | |
1187 // (see also JVM spec., p.243 & p.271) | |
1188 __ corrected_idivl(rcx); | |
1189 } | |
1190 | |
1191 | |
1192 void TemplateTable::irem() { | |
1193 transition(itos, itos); | |
304 | 1194 __ mov(rcx, rax); |
0 | 1195 __ pop_i(rax); |
1196 // Note: could xor rax, and rcx and compare with (-1 ^ min_int). If | |
1197 // they are not equal, one could do a normal division (no correction | |
1198 // needed), which may speed up this implementation for the common case. | |
1199 // (see also JVM spec., p.243 & p.271) | |
1200 __ corrected_idivl(rcx); | |
304 | 1201 __ mov(rax, rdx); |
0 | 1202 } |
1203 | |
1204 | |
1205 void TemplateTable::lmul() { | |
1206 transition(ltos, ltos); | |
1207 __ pop_l(rbx, rcx); | |
304 | 1208 __ push(rcx); __ push(rbx); |
1209 __ push(rdx); __ push(rax); | |
0 | 1210 __ lmul(2 * wordSize, 0); |
304 | 1211 __ addptr(rsp, 4 * wordSize); // take off temporaries |
0 | 1212 } |
1213 | |
1214 | |
1215 void TemplateTable::ldiv() { | |
1216 transition(ltos, ltos); | |
1217 __ pop_l(rbx, rcx); | |
304 | 1218 __ push(rcx); __ push(rbx); |
1219 __ push(rdx); __ push(rax); | |
0 | 1220 // check if y = 0 |
1221 __ orl(rax, rdx); | |
1222 __ jump_cc(Assembler::zero, | |
1223 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1224 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::ldiv)); | |
304 | 1225 __ addptr(rsp, 4 * wordSize); // take off temporaries |
0 | 1226 } |
1227 | |
1228 | |
1229 void TemplateTable::lrem() { | |
1230 transition(ltos, ltos); | |
1231 __ pop_l(rbx, rcx); | |
304 | 1232 __ push(rcx); __ push(rbx); |
1233 __ push(rdx); __ push(rax); | |
0 | 1234 // check if y = 0 |
1235 __ orl(rax, rdx); | |
1236 __ jump_cc(Assembler::zero, | |
1237 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1238 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::lrem)); | |
304 | 1239 __ addptr(rsp, 4 * wordSize); |
0 | 1240 } |
1241 | |
1242 | |
1243 void TemplateTable::lshl() { | |
1244 transition(itos, ltos); | |
1245 __ movl(rcx, rax); // get shift count | |
1246 __ pop_l(rax, rdx); // get shift value | |
1247 __ lshl(rdx, rax); | |
1248 } | |
1249 | |
1250 | |
1251 void TemplateTable::lshr() { | |
1252 transition(itos, ltos); | |
304 | 1253 __ mov(rcx, rax); // get shift count |
0 | 1254 __ pop_l(rax, rdx); // get shift value |
1255 __ lshr(rdx, rax, true); | |
1256 } | |
1257 | |
1258 | |
1259 void TemplateTable::lushr() { | |
1260 transition(itos, ltos); | |
304 | 1261 __ mov(rcx, rax); // get shift count |
0 | 1262 __ pop_l(rax, rdx); // get shift value |
1263 __ lshr(rdx, rax); | |
1264 } | |
1265 | |
1266 | |
1267 void TemplateTable::fop2(Operation op) { | |
1268 transition(ftos, ftos); | |
1269 switch (op) { | |
1270 case add: __ fadd_s (at_rsp()); break; | |
1271 case sub: __ fsubr_s(at_rsp()); break; | |
1272 case mul: __ fmul_s (at_rsp()); break; | |
1273 case div: __ fdivr_s(at_rsp()); break; | |
1274 case rem: __ fld_s (at_rsp()); __ fremr(rax); break; | |
1275 default : ShouldNotReachHere(); | |
1276 } | |
1277 __ f2ieee(); | |
304 | 1278 __ pop(rax); // pop float thing off |
0 | 1279 } |
1280 | |
1281 | |
1282 void TemplateTable::dop2(Operation op) { | |
1283 transition(dtos, dtos); | |
1284 | |
1285 switch (op) { | |
1286 case add: __ fadd_d (at_rsp()); break; | |
1287 case sub: __ fsubr_d(at_rsp()); break; | |
1288 case mul: { | |
1289 Label L_strict; | |
1290 Label L_join; | |
1291 const Address access_flags (rcx, methodOopDesc::access_flags_offset()); | |
1292 __ get_method(rcx); | |
1293 __ movl(rcx, access_flags); | |
1294 __ testl(rcx, JVM_ACC_STRICT); | |
1295 __ jccb(Assembler::notZero, L_strict); | |
1296 __ fmul_d (at_rsp()); | |
1297 __ jmpb(L_join); | |
1298 __ bind(L_strict); | |
1299 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); | |
1300 __ fmulp(); | |
1301 __ fmul_d (at_rsp()); | |
1302 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); | |
1303 __ fmulp(); | |
1304 __ bind(L_join); | |
1305 break; | |
1306 } | |
1307 case div: { | |
1308 Label L_strict; | |
1309 Label L_join; | |
1310 const Address access_flags (rcx, methodOopDesc::access_flags_offset()); | |
1311 __ get_method(rcx); | |
1312 __ movl(rcx, access_flags); | |
1313 __ testl(rcx, JVM_ACC_STRICT); | |
1314 __ jccb(Assembler::notZero, L_strict); | |
1315 __ fdivr_d(at_rsp()); | |
1316 __ jmp(L_join); | |
1317 __ bind(L_strict); | |
1318 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); | |
1319 __ fmul_d (at_rsp()); | |
1320 __ fdivrp(); | |
1321 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); | |
1322 __ fmulp(); | |
1323 __ bind(L_join); | |
1324 break; | |
1325 } | |
1326 case rem: __ fld_d (at_rsp()); __ fremr(rax); break; | |
1327 default : ShouldNotReachHere(); | |
1328 } | |
1329 __ d2ieee(); | |
1330 // Pop double precision number from rsp. | |
304 | 1331 __ pop(rax); |
1332 __ pop(rdx); | |
0 | 1333 } |
1334 | |
1335 | |
1336 void TemplateTable::ineg() { | |
1337 transition(itos, itos); | |
1338 __ negl(rax); | |
1339 } | |
1340 | |
1341 | |
1342 void TemplateTable::lneg() { | |
1343 transition(ltos, ltos); | |
1344 __ lneg(rdx, rax); | |
1345 } | |
1346 | |
1347 | |
1348 void TemplateTable::fneg() { | |
1349 transition(ftos, ftos); | |
1350 __ fchs(); | |
1351 } | |
1352 | |
1353 | |
1354 void TemplateTable::dneg() { | |
1355 transition(dtos, dtos); | |
1356 __ fchs(); | |
1357 } | |
1358 | |
1359 | |
1360 void TemplateTable::iinc() { | |
1361 transition(vtos, vtos); | |
1362 __ load_signed_byte(rdx, at_bcp(2)); // get constant | |
1363 locals_index(rbx); | |
1364 __ addl(iaddress(rbx), rdx); | |
1365 } | |
1366 | |
1367 | |
1368 void TemplateTable::wide_iinc() { | |
1369 transition(vtos, vtos); | |
1370 __ movl(rdx, at_bcp(4)); // get constant | |
1371 locals_index_wide(rbx); | |
304 | 1372 __ bswapl(rdx); // swap bytes & sign-extend constant |
0 | 1373 __ sarl(rdx, 16); |
1374 __ addl(iaddress(rbx), rdx); | |
1375 // Note: should probably use only one movl to get both | |
1376 // the index and the constant -> fix this | |
1377 } | |
1378 | |
1379 | |
1380 void TemplateTable::convert() { | |
1381 // Checking | |
1382 #ifdef ASSERT | |
1383 { TosState tos_in = ilgl; | |
1384 TosState tos_out = ilgl; | |
1385 switch (bytecode()) { | |
1386 case Bytecodes::_i2l: // fall through | |
1387 case Bytecodes::_i2f: // fall through | |
1388 case Bytecodes::_i2d: // fall through | |
1389 case Bytecodes::_i2b: // fall through | |
1390 case Bytecodes::_i2c: // fall through | |
1391 case Bytecodes::_i2s: tos_in = itos; break; | |
1392 case Bytecodes::_l2i: // fall through | |
1393 case Bytecodes::_l2f: // fall through | |
1394 case Bytecodes::_l2d: tos_in = ltos; break; | |
1395 case Bytecodes::_f2i: // fall through | |
1396 case Bytecodes::_f2l: // fall through | |
1397 case Bytecodes::_f2d: tos_in = ftos; break; | |
1398 case Bytecodes::_d2i: // fall through | |
1399 case Bytecodes::_d2l: // fall through | |
1400 case Bytecodes::_d2f: tos_in = dtos; break; | |
1401 default : ShouldNotReachHere(); | |
1402 } | |
1403 switch (bytecode()) { | |
1404 case Bytecodes::_l2i: // fall through | |
1405 case Bytecodes::_f2i: // fall through | |
1406 case Bytecodes::_d2i: // fall through | |
1407 case Bytecodes::_i2b: // fall through | |
1408 case Bytecodes::_i2c: // fall through | |
1409 case Bytecodes::_i2s: tos_out = itos; break; | |
1410 case Bytecodes::_i2l: // fall through | |
1411 case Bytecodes::_f2l: // fall through | |
1412 case Bytecodes::_d2l: tos_out = ltos; break; | |
1413 case Bytecodes::_i2f: // fall through | |
1414 case Bytecodes::_l2f: // fall through | |
1415 case Bytecodes::_d2f: tos_out = ftos; break; | |
1416 case Bytecodes::_i2d: // fall through | |
1417 case Bytecodes::_l2d: // fall through | |
1418 case Bytecodes::_f2d: tos_out = dtos; break; | |
1419 default : ShouldNotReachHere(); | |
1420 } | |
1421 transition(tos_in, tos_out); | |
1422 } | |
1423 #endif // ASSERT | |
1424 | |
1425 // Conversion | |
304 | 1426 // (Note: use push(rcx)/pop(rcx) for 1/2-word stack-ptr manipulation) |
0 | 1427 switch (bytecode()) { |
1428 case Bytecodes::_i2l: | |
1429 __ extend_sign(rdx, rax); | |
1430 break; | |
1431 case Bytecodes::_i2f: | |
304 | 1432 __ push(rax); // store int on tos |
0 | 1433 __ fild_s(at_rsp()); // load int to ST0 |
1434 __ f2ieee(); // truncate to float size | |
304 | 1435 __ pop(rcx); // adjust rsp |
0 | 1436 break; |
1437 case Bytecodes::_i2d: | |
304 | 1438 __ push(rax); // add one slot for d2ieee() |
1439 __ push(rax); // store int on tos | |
0 | 1440 __ fild_s(at_rsp()); // load int to ST0 |
1441 __ d2ieee(); // truncate to double size | |
304 | 1442 __ pop(rcx); // adjust rsp |
1443 __ pop(rcx); | |
0 | 1444 break; |
1445 case Bytecodes::_i2b: | |
1446 __ shll(rax, 24); // truncate upper 24 bits | |
1447 __ sarl(rax, 24); // and sign-extend byte | |
304 | 1448 LP64_ONLY(__ movsbl(rax, rax)); |
0 | 1449 break; |
1450 case Bytecodes::_i2c: | |
1451 __ andl(rax, 0xFFFF); // truncate upper 16 bits | |
304 | 1452 LP64_ONLY(__ movzwl(rax, rax)); |
0 | 1453 break; |
1454 case Bytecodes::_i2s: | |
1455 __ shll(rax, 16); // truncate upper 16 bits | |
1456 __ sarl(rax, 16); // and sign-extend short | |
304 | 1457 LP64_ONLY(__ movswl(rax, rax)); |
0 | 1458 break; |
1459 case Bytecodes::_l2i: | |
1460 /* nothing to do */ | |
1461 break; | |
1462 case Bytecodes::_l2f: | |
304 | 1463 __ push(rdx); // store long on tos |
1464 __ push(rax); | |
0 | 1465 __ fild_d(at_rsp()); // load long to ST0 |
1466 __ f2ieee(); // truncate to float size | |
304 | 1467 __ pop(rcx); // adjust rsp |
1468 __ pop(rcx); | |
0 | 1469 break; |
1470 case Bytecodes::_l2d: | |
304 | 1471 __ push(rdx); // store long on tos |
1472 __ push(rax); | |
0 | 1473 __ fild_d(at_rsp()); // load long to ST0 |
1474 __ d2ieee(); // truncate to double size | |
304 | 1475 __ pop(rcx); // adjust rsp |
1476 __ pop(rcx); | |
0 | 1477 break; |
1478 case Bytecodes::_f2i: | |
304 | 1479 __ push(rcx); // reserve space for argument |
0 | 1480 __ fstp_s(at_rsp()); // pass float argument on stack |
1481 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1); | |
1482 break; | |
1483 case Bytecodes::_f2l: | |
304 | 1484 __ push(rcx); // reserve space for argument |
0 | 1485 __ fstp_s(at_rsp()); // pass float argument on stack |
1486 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1); | |
1487 break; | |
1488 case Bytecodes::_f2d: | |
1489 /* nothing to do */ | |
1490 break; | |
1491 case Bytecodes::_d2i: | |
304 | 1492 __ push(rcx); // reserve space for argument |
1493 __ push(rcx); | |
0 | 1494 __ fstp_d(at_rsp()); // pass double argument on stack |
1495 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 2); | |
1496 break; | |
1497 case Bytecodes::_d2l: | |
304 | 1498 __ push(rcx); // reserve space for argument |
1499 __ push(rcx); | |
0 | 1500 __ fstp_d(at_rsp()); // pass double argument on stack |
1501 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 2); | |
1502 break; | |
1503 case Bytecodes::_d2f: | |
304 | 1504 __ push(rcx); // reserve space for f2ieee() |
0 | 1505 __ f2ieee(); // truncate to float size |
304 | 1506 __ pop(rcx); // adjust rsp |
0 | 1507 break; |
1508 default : | |
1509 ShouldNotReachHere(); | |
1510 } | |
1511 } | |
1512 | |
1513 | |
1514 void TemplateTable::lcmp() { | |
1515 transition(ltos, itos); | |
1516 // y = rdx:rax | |
1517 __ pop_l(rbx, rcx); // get x = rcx:rbx | |
1518 __ lcmp2int(rcx, rbx, rdx, rax);// rcx := cmp(x, y) | |
304 | 1519 __ mov(rax, rcx); |
0 | 1520 } |
1521 | |
1522 | |
1523 void TemplateTable::float_cmp(bool is_float, int unordered_result) { | |
1524 if (is_float) { | |
1525 __ fld_s(at_rsp()); | |
1526 } else { | |
1527 __ fld_d(at_rsp()); | |
304 | 1528 __ pop(rdx); |
0 | 1529 } |
304 | 1530 __ pop(rcx); |
0 | 1531 __ fcmp2int(rax, unordered_result < 0); |
1532 } | |
1533 | |
1534 | |
1535 void TemplateTable::branch(bool is_jsr, bool is_wide) { | |
1536 __ get_method(rcx); // ECX holds method | |
1537 __ profile_taken_branch(rax,rbx); // EAX holds updated MDP, EBX holds bumped taken count | |
1538 | |
1539 const ByteSize be_offset = methodOopDesc::backedge_counter_offset() + InvocationCounter::counter_offset(); | |
1540 const ByteSize inv_offset = methodOopDesc::invocation_counter_offset() + InvocationCounter::counter_offset(); | |
1541 const int method_offset = frame::interpreter_frame_method_offset * wordSize; | |
1542 | |
1543 // Load up EDX with the branch displacement | |
1544 __ movl(rdx, at_bcp(1)); | |
304 | 1545 __ bswapl(rdx); |
0 | 1546 if (!is_wide) __ sarl(rdx, 16); |
304 | 1547 LP64_ONLY(__ movslq(rdx, rdx)); |
1548 | |
0 | 1549 |
1550 // Handle all the JSR stuff here, then exit. | |
1551 // It's much shorter and cleaner than intermingling with the | |
605 | 1552 // non-JSR normal-branch stuff occurring below. |
0 | 1553 if (is_jsr) { |
1554 // Pre-load the next target bytecode into EBX | |
1555 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1, 0)); | |
1556 | |
1557 // compute return address as bci in rax, | |
304 | 1558 __ lea(rax, at_bcp((is_wide ? 5 : 3) - in_bytes(constMethodOopDesc::codes_offset()))); |
1559 __ subptr(rax, Address(rcx, methodOopDesc::const_offset())); | |
362 | 1560 // Adjust the bcp in RSI by the displacement in EDX |
304 | 1561 __ addptr(rsi, rdx); |
0 | 1562 // Push return address |
1563 __ push_i(rax); | |
1564 // jsr returns vtos | |
1565 __ dispatch_only_noverify(vtos); | |
1566 return; | |
1567 } | |
1568 | |
1569 // Normal (non-jsr) branch handling | |
1570 | |
362 | 1571 // Adjust the bcp in RSI by the displacement in EDX |
304 | 1572 __ addptr(rsi, rdx); |
0 | 1573 |
1574 assert(UseLoopCounter || !UseOnStackReplacement, "on-stack-replacement requires loop counters"); | |
1575 Label backedge_counter_overflow; | |
1576 Label profile_method; | |
1577 Label dispatch; | |
1578 if (UseLoopCounter) { | |
1579 // increment backedge counter for backward branches | |
1580 // rax,: MDO | |
1581 // rbx,: MDO bumped taken-count | |
1582 // rcx: method | |
1583 // rdx: target offset | |
1584 // rsi: target bcp | |
1585 // rdi: locals pointer | |
1586 __ testl(rdx, rdx); // check if forward or backward branch | |
1587 __ jcc(Assembler::positive, dispatch); // count only if backward branch | |
1588 | |
1783 | 1589 if (TieredCompilation) { |
1590 Label no_mdo; | |
1591 int increment = InvocationCounter::count_increment; | |
1592 int mask = ((1 << Tier0BackedgeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
1593 if (ProfileInterpreter) { | |
1594 // Are we profiling? | |
1595 __ movptr(rbx, Address(rcx, in_bytes(methodOopDesc::method_data_offset()))); | |
1596 __ testptr(rbx, rbx); | |
1597 __ jccb(Assembler::zero, no_mdo); | |
1598 // Increment the MDO backedge counter | |
1599 const Address mdo_backedge_counter(rbx, in_bytes(methodDataOopDesc::backedge_counter_offset()) + | |
1600 in_bytes(InvocationCounter::counter_offset())); | |
1601 __ increment_mask_and_jump(mdo_backedge_counter, increment, mask, | |
1602 rax, false, Assembler::zero, &backedge_counter_overflow); | |
1603 __ jmp(dispatch); | |
0 | 1604 } |
1783 | 1605 __ bind(no_mdo); |
1606 // Increment backedge counter in methodOop | |
1607 __ increment_mask_and_jump(Address(rcx, be_offset), increment, mask, | |
1608 rax, false, Assembler::zero, &backedge_counter_overflow); | |
0 | 1609 } else { |
1783 | 1610 // increment counter |
1611 __ movl(rax, Address(rcx, be_offset)); // load backedge counter | |
1612 __ incrementl(rax, InvocationCounter::count_increment); // increment counter | |
1613 __ movl(Address(rcx, be_offset), rax); // store counter | |
1614 | |
1615 __ movl(rax, Address(rcx, inv_offset)); // load invocation counter | |
1616 __ andl(rax, InvocationCounter::count_mask_value); // and the status bits | |
1617 __ addl(rax, Address(rcx, be_offset)); // add both counters | |
1618 | |
1619 if (ProfileInterpreter) { | |
1620 // Test to see if we should create a method data oop | |
0 | 1621 __ cmp32(rax, |
1783 | 1622 ExternalAddress((address) &InvocationCounter::InterpreterProfileLimit)); |
1623 __ jcc(Assembler::less, dispatch); | |
1624 | |
1625 // if no method data exists, go to profile method | |
1626 __ test_method_data_pointer(rax, profile_method); | |
1627 | |
1628 if (UseOnStackReplacement) { | |
1629 // check for overflow against rbx, which is the MDO taken count | |
1630 __ cmp32(rbx, | |
1631 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1632 __ jcc(Assembler::below, dispatch); | |
1633 | |
1634 // When ProfileInterpreter is on, the backedge_count comes from the | |
1635 // methodDataOop, which value does not get reset on the call to | |
1636 // frequency_counter_overflow(). To avoid excessive calls to the overflow | |
1637 // routine while the method is being compiled, add a second test to make | |
1638 // sure the overflow function is called only once every overflow_frequency. | |
1639 const int overflow_frequency = 1024; | |
1640 __ andptr(rbx, overflow_frequency-1); | |
1641 __ jcc(Assembler::zero, backedge_counter_overflow); | |
1642 } | |
1643 } else { | |
1644 if (UseOnStackReplacement) { | |
1645 // check for overflow against rax, which is the sum of the counters | |
1646 __ cmp32(rax, | |
1647 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1648 __ jcc(Assembler::aboveEqual, backedge_counter_overflow); | |
1649 | |
1650 } | |
0 | 1651 } |
1652 } | |
1653 __ bind(dispatch); | |
1654 } | |
1655 | |
1656 // Pre-load the next target bytecode into EBX | |
1657 __ load_unsigned_byte(rbx, Address(rsi, 0)); | |
1658 | |
1659 // continue with the bytecode @ target | |
1660 // rax,: return bci for jsr's, unused otherwise | |
1661 // rbx,: target bytecode | |
1662 // rsi: target bcp | |
1663 __ dispatch_only(vtos); | |
1664 | |
1665 if (UseLoopCounter) { | |
1666 if (ProfileInterpreter) { | |
1667 // Out-of-line code to allocate method data oop. | |
1668 __ bind(profile_method); | |
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1669 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
0 | 1670 __ load_unsigned_byte(rbx, Address(rsi, 0)); // restore target bytecode |
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1671 __ set_method_data_pointer_for_bcp(); |
0 | 1672 __ jmp(dispatch); |
1673 } | |
1674 | |
1675 if (UseOnStackReplacement) { | |
1676 | |
1677 // invocation counter overflow | |
1678 __ bind(backedge_counter_overflow); | |
304 | 1679 __ negptr(rdx); |
1680 __ addptr(rdx, rsi); // branch bcp | |
0 | 1681 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rdx); |
1682 __ load_unsigned_byte(rbx, Address(rsi, 0)); // restore target bytecode | |
1683 | |
1684 // rax,: osr nmethod (osr ok) or NULL (osr not possible) | |
1685 // rbx,: target bytecode | |
1686 // rdx: scratch | |
1687 // rdi: locals pointer | |
1688 // rsi: bcp | |
304 | 1689 __ testptr(rax, rax); // test result |
0 | 1690 __ jcc(Assembler::zero, dispatch); // no osr if null |
1691 // nmethod may have been invalidated (VM may block upon call_VM return) | |
1692 __ movl(rcx, Address(rax, nmethod::entry_bci_offset())); | |
1693 __ cmpl(rcx, InvalidOSREntryBci); | |
1694 __ jcc(Assembler::equal, dispatch); | |
1695 | |
1696 // We have the address of an on stack replacement routine in rax, | |
1697 // We need to prepare to execute the OSR method. First we must | |
1698 // migrate the locals and monitors off of the stack. | |
1699 | |
304 | 1700 __ mov(rbx, rax); // save the nmethod |
0 | 1701 |
1702 const Register thread = rcx; | |
1703 __ get_thread(thread); | |
1704 call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin)); | |
1705 // rax, is OSR buffer, move it to expected parameter location | |
304 | 1706 __ mov(rcx, rax); |
0 | 1707 |
1708 // pop the interpreter frame | |
304 | 1709 __ movptr(rdx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 1710 __ leave(); // remove frame anchor |
304 | 1711 __ pop(rdi); // get return address |
1712 __ mov(rsp, rdx); // set sp to sender sp | |
0 | 1713 |
1714 // Align stack pointer for compiled code (note that caller is | |
1715 // responsible for undoing this fixup by remembering the old SP | |
1716 // in an rbp,-relative location) | |
304 | 1717 __ andptr(rsp, -(StackAlignmentInBytes)); |
0 | 1718 |
1719 // push the (possibly adjusted) return address | |
304 | 1720 __ push(rdi); |
0 | 1721 |
1722 // and begin the OSR nmethod | |
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1723 __ jmp(Address(rbx, nmethod::osr_entry_point_offset())); |
0 | 1724 } |
1725 } | |
1726 } | |
1727 | |
1728 | |
1729 void TemplateTable::if_0cmp(Condition cc) { | |
1730 transition(itos, vtos); | |
1731 // assume branch is more often taken than not (loops use backward branches) | |
1732 Label not_taken; | |
1733 __ testl(rax, rax); | |
1734 __ jcc(j_not(cc), not_taken); | |
1735 branch(false, false); | |
1736 __ bind(not_taken); | |
1737 __ profile_not_taken_branch(rax); | |
1738 } | |
1739 | |
1740 | |
1741 void TemplateTable::if_icmp(Condition cc) { | |
1742 transition(itos, vtos); | |
1743 // assume branch is more often taken than not (loops use backward branches) | |
1744 Label not_taken; | |
1745 __ pop_i(rdx); | |
1746 __ cmpl(rdx, rax); | |
1747 __ jcc(j_not(cc), not_taken); | |
1748 branch(false, false); | |
1749 __ bind(not_taken); | |
1750 __ profile_not_taken_branch(rax); | |
1751 } | |
1752 | |
1753 | |
1754 void TemplateTable::if_nullcmp(Condition cc) { | |
1755 transition(atos, vtos); | |
1756 // assume branch is more often taken than not (loops use backward branches) | |
1757 Label not_taken; | |
304 | 1758 __ testptr(rax, rax); |
0 | 1759 __ jcc(j_not(cc), not_taken); |
1760 branch(false, false); | |
1761 __ bind(not_taken); | |
1762 __ profile_not_taken_branch(rax); | |
1763 } | |
1764 | |
1765 | |
1766 void TemplateTable::if_acmp(Condition cc) { | |
1767 transition(atos, vtos); | |
1768 // assume branch is more often taken than not (loops use backward branches) | |
1769 Label not_taken; | |
1770 __ pop_ptr(rdx); | |
304 | 1771 __ cmpptr(rdx, rax); |
0 | 1772 __ jcc(j_not(cc), not_taken); |
1773 branch(false, false); | |
1774 __ bind(not_taken); | |
1775 __ profile_not_taken_branch(rax); | |
1776 } | |
1777 | |
1778 | |
1779 void TemplateTable::ret() { | |
1780 transition(vtos, vtos); | |
1781 locals_index(rbx); | |
304 | 1782 __ movptr(rbx, iaddress(rbx)); // get return bci, compute return bcp |
0 | 1783 __ profile_ret(rbx, rcx); |
1784 __ get_method(rax); | |
304 | 1785 __ movptr(rsi, Address(rax, methodOopDesc::const_offset())); |
1786 __ lea(rsi, Address(rsi, rbx, Address::times_1, | |
1787 constMethodOopDesc::codes_offset())); | |
0 | 1788 __ dispatch_next(vtos); |
1789 } | |
1790 | |
1791 | |
1792 void TemplateTable::wide_ret() { | |
1793 transition(vtos, vtos); | |
1794 locals_index_wide(rbx); | |
304 | 1795 __ movptr(rbx, iaddress(rbx)); // get return bci, compute return bcp |
0 | 1796 __ profile_ret(rbx, rcx); |
1797 __ get_method(rax); | |
304 | 1798 __ movptr(rsi, Address(rax, methodOopDesc::const_offset())); |
1799 __ lea(rsi, Address(rsi, rbx, Address::times_1, constMethodOopDesc::codes_offset())); | |
0 | 1800 __ dispatch_next(vtos); |
1801 } | |
1802 | |
1803 | |
1804 void TemplateTable::tableswitch() { | |
1805 Label default_case, continue_execution; | |
1806 transition(itos, vtos); | |
1807 // align rsi | |
304 | 1808 __ lea(rbx, at_bcp(wordSize)); |
1809 __ andptr(rbx, -wordSize); | |
0 | 1810 // load lo & hi |
1811 __ movl(rcx, Address(rbx, 1 * wordSize)); | |
1812 __ movl(rdx, Address(rbx, 2 * wordSize)); | |
304 | 1813 __ bswapl(rcx); |
1814 __ bswapl(rdx); | |
0 | 1815 // check against lo & hi |
1816 __ cmpl(rax, rcx); | |
1817 __ jccb(Assembler::less, default_case); | |
1818 __ cmpl(rax, rdx); | |
1819 __ jccb(Assembler::greater, default_case); | |
1820 // lookup dispatch offset | |
1821 __ subl(rax, rcx); | |
304 | 1822 __ movl(rdx, Address(rbx, rax, Address::times_4, 3 * BytesPerInt)); |
0 | 1823 __ profile_switch_case(rax, rbx, rcx); |
1824 // continue execution | |
1825 __ bind(continue_execution); | |
304 | 1826 __ bswapl(rdx); |
0 | 1827 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1)); |
304 | 1828 __ addptr(rsi, rdx); |
0 | 1829 __ dispatch_only(vtos); |
1830 // handle default | |
1831 __ bind(default_case); | |
1832 __ profile_switch_default(rax); | |
1833 __ movl(rdx, Address(rbx, 0)); | |
1834 __ jmp(continue_execution); | |
1835 } | |
1836 | |
1837 | |
1838 void TemplateTable::lookupswitch() { | |
1839 transition(itos, itos); | |
1840 __ stop("lookupswitch bytecode should have been rewritten"); | |
1841 } | |
1842 | |
1843 | |
1844 void TemplateTable::fast_linearswitch() { | |
1845 transition(itos, vtos); | |
1846 Label loop_entry, loop, found, continue_execution; | |
304 | 1847 // bswapl rax, so we can avoid bswapping the table entries |
1848 __ bswapl(rax); | |
0 | 1849 // align rsi |
304 | 1850 __ lea(rbx, at_bcp(wordSize)); // btw: should be able to get rid of this instruction (change offsets below) |
1851 __ andptr(rbx, -wordSize); | |
0 | 1852 // set counter |
1853 __ movl(rcx, Address(rbx, wordSize)); | |
304 | 1854 __ bswapl(rcx); |
0 | 1855 __ jmpb(loop_entry); |
1856 // table search | |
1857 __ bind(loop); | |
1858 __ cmpl(rax, Address(rbx, rcx, Address::times_8, 2 * wordSize)); | |
1859 __ jccb(Assembler::equal, found); | |
1860 __ bind(loop_entry); | |
304 | 1861 __ decrementl(rcx); |
0 | 1862 __ jcc(Assembler::greaterEqual, loop); |
1863 // default case | |
1864 __ profile_switch_default(rax); | |
1865 __ movl(rdx, Address(rbx, 0)); | |
1866 __ jmpb(continue_execution); | |
1867 // entry found -> get offset | |
1868 __ bind(found); | |
1869 __ movl(rdx, Address(rbx, rcx, Address::times_8, 3 * wordSize)); | |
1870 __ profile_switch_case(rcx, rax, rbx); | |
1871 // continue execution | |
1872 __ bind(continue_execution); | |
304 | 1873 __ bswapl(rdx); |
0 | 1874 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1)); |
304 | 1875 __ addptr(rsi, rdx); |
0 | 1876 __ dispatch_only(vtos); |
1877 } | |
1878 | |
1879 | |
1880 void TemplateTable::fast_binaryswitch() { | |
1881 transition(itos, vtos); | |
1882 // Implementation using the following core algorithm: | |
1883 // | |
1884 // int binary_search(int key, LookupswitchPair* array, int n) { | |
1885 // // Binary search according to "Methodik des Programmierens" by | |
1886 // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985. | |
1887 // int i = 0; | |
1888 // int j = n; | |
1889 // while (i+1 < j) { | |
1890 // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q) | |
1891 // // with Q: for all i: 0 <= i < n: key < a[i] | |
1892 // // where a stands for the array and assuming that the (inexisting) | |
1893 // // element a[n] is infinitely big. | |
1894 // int h = (i + j) >> 1; | |
1895 // // i < h < j | |
1896 // if (key < array[h].fast_match()) { | |
1897 // j = h; | |
1898 // } else { | |
1899 // i = h; | |
1900 // } | |
1901 // } | |
1902 // // R: a[i] <= key < a[i+1] or Q | |
1903 // // (i.e., if key is within array, i is the correct index) | |
1904 // return i; | |
1905 // } | |
1906 | |
1907 // register allocation | |
1908 const Register key = rax; // already set (tosca) | |
1909 const Register array = rbx; | |
1910 const Register i = rcx; | |
1911 const Register j = rdx; | |
1912 const Register h = rdi; // needs to be restored | |
1913 const Register temp = rsi; | |
1914 // setup array | |
1915 __ save_bcp(); | |
1916 | |
304 | 1917 __ lea(array, at_bcp(3*wordSize)); // btw: should be able to get rid of this instruction (change offsets below) |
1918 __ andptr(array, -wordSize); | |
0 | 1919 // initialize i & j |
1920 __ xorl(i, i); // i = 0; | |
1921 __ movl(j, Address(array, -wordSize)); // j = length(array); | |
1922 // Convert j into native byteordering | |
304 | 1923 __ bswapl(j); |
0 | 1924 // and start |
1925 Label entry; | |
1926 __ jmp(entry); | |
1927 | |
1928 // binary search loop | |
1929 { Label loop; | |
1930 __ bind(loop); | |
1931 // int h = (i + j) >> 1; | |
1932 __ leal(h, Address(i, j, Address::times_1)); // h = i + j; | |
1933 __ sarl(h, 1); // h = (i + j) >> 1; | |
1934 // if (key < array[h].fast_match()) { | |
1935 // j = h; | |
1936 // } else { | |
1937 // i = h; | |
1938 // } | |
1939 // Convert array[h].match to native byte-ordering before compare | |
1940 __ movl(temp, Address(array, h, Address::times_8, 0*wordSize)); | |
304 | 1941 __ bswapl(temp); |
0 | 1942 __ cmpl(key, temp); |
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1943 // j = h if (key < array[h].fast_match()) |
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1944 __ cmov32(Assembler::less , j, h); |
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1945 // i = h if (key >= array[h].fast_match()) |
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1946 __ cmov32(Assembler::greaterEqual, i, h); |
0 | 1947 // while (i+1 < j) |
1948 __ bind(entry); | |
1949 __ leal(h, Address(i, 1)); // i+1 | |
1950 __ cmpl(h, j); // i+1 < j | |
1951 __ jcc(Assembler::less, loop); | |
1952 } | |
1953 | |
1954 // end of binary search, result index is i (must check again!) | |
1955 Label default_case; | |
1956 // Convert array[i].match to native byte-ordering before compare | |
1957 __ movl(temp, Address(array, i, Address::times_8, 0*wordSize)); | |
304 | 1958 __ bswapl(temp); |
0 | 1959 __ cmpl(key, temp); |
1960 __ jcc(Assembler::notEqual, default_case); | |
1961 | |
1962 // entry found -> j = offset | |
1963 __ movl(j , Address(array, i, Address::times_8, 1*wordSize)); | |
1964 __ profile_switch_case(i, key, array); | |
304 | 1965 __ bswapl(j); |
1966 LP64_ONLY(__ movslq(j, j)); | |
0 | 1967 __ restore_bcp(); |
1968 __ restore_locals(); // restore rdi | |
1969 __ load_unsigned_byte(rbx, Address(rsi, j, Address::times_1)); | |
1970 | |
304 | 1971 __ addptr(rsi, j); |
0 | 1972 __ dispatch_only(vtos); |
1973 | |
1974 // default case -> j = default offset | |
1975 __ bind(default_case); | |
1976 __ profile_switch_default(i); | |
1977 __ movl(j, Address(array, -2*wordSize)); | |
304 | 1978 __ bswapl(j); |
1979 LP64_ONLY(__ movslq(j, j)); | |
0 | 1980 __ restore_bcp(); |
1981 __ restore_locals(); // restore rdi | |
1982 __ load_unsigned_byte(rbx, Address(rsi, j, Address::times_1)); | |
304 | 1983 __ addptr(rsi, j); |
0 | 1984 __ dispatch_only(vtos); |
1985 } | |
1986 | |
1987 | |
1988 void TemplateTable::_return(TosState state) { | |
1989 transition(state, state); | |
1990 assert(_desc->calls_vm(), "inconsistent calls_vm information"); // call in remove_activation | |
1991 | |
1992 if (_desc->bytecode() == Bytecodes::_return_register_finalizer) { | |
1993 assert(state == vtos, "only valid state"); | |
304 | 1994 __ movptr(rax, aaddress(0)); |
1995 __ movptr(rdi, Address(rax, oopDesc::klass_offset_in_bytes())); | |
0 | 1996 __ movl(rdi, Address(rdi, Klass::access_flags_offset_in_bytes() + sizeof(oopDesc))); |
1997 __ testl(rdi, JVM_ACC_HAS_FINALIZER); | |
1998 Label skip_register_finalizer; | |
1999 __ jcc(Assembler::zero, skip_register_finalizer); | |
2000 | |
2001 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), rax); | |
2002 | |
2003 __ bind(skip_register_finalizer); | |
2004 } | |
2005 | |
2006 __ remove_activation(state, rsi); | |
2007 __ jmp(rsi); | |
2008 } | |
2009 | |
2010 | |
2011 // ---------------------------------------------------------------------------- | |
2012 // Volatile variables demand their effects be made known to all CPU's in | |
2013 // order. Store buffers on most chips allow reads & writes to reorder; the | |
2014 // JMM's ReadAfterWrite.java test fails in -Xint mode without some kind of | |
2015 // memory barrier (i.e., it's not sufficient that the interpreter does not | |
2016 // reorder volatile references, the hardware also must not reorder them). | |
2017 // | |
2018 // According to the new Java Memory Model (JMM): | |
2019 // (1) All volatiles are serialized wrt to each other. | |
2020 // ALSO reads & writes act as aquire & release, so: | |
2021 // (2) A read cannot let unrelated NON-volatile memory refs that happen after | |
2022 // the read float up to before the read. It's OK for non-volatile memory refs | |
2023 // that happen before the volatile read to float down below it. | |
2024 // (3) Similar a volatile write cannot let unrelated NON-volatile memory refs | |
2025 // that happen BEFORE the write float down to after the write. It's OK for | |
2026 // non-volatile memory refs that happen after the volatile write to float up | |
2027 // before it. | |
2028 // | |
2029 // We only put in barriers around volatile refs (they are expensive), not | |
2030 // _between_ memory refs (that would require us to track the flavor of the | |
2031 // previous memory refs). Requirements (2) and (3) require some barriers | |
2032 // before volatile stores and after volatile loads. These nearly cover | |
2033 // requirement (1) but miss the volatile-store-volatile-load case. This final | |
2034 // case is placed after volatile-stores although it could just as well go | |
2035 // before volatile-loads. | |
304 | 2036 void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits order_constraint ) { |
0 | 2037 // Helper function to insert a is-volatile test and memory barrier |
2038 if( !os::is_MP() ) return; // Not needed on single CPU | |
304 | 2039 __ membar(order_constraint); |
0 | 2040 } |
2041 | |
1565 | 2042 void TemplateTable::resolve_cache_and_index(int byte_no, |
2043 Register result, | |
2044 Register Rcache, | |
2045 Register index, | |
2046 size_t index_size) { | |
0 | 2047 Register temp = rbx; |
2048 | |
1565 | 2049 assert_different_registers(result, Rcache, index, temp); |
2050 | |
0 | 2051 Label resolved; |
1565 | 2052 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size); |
2053 if (byte_no == f1_oop) { | |
2054 // We are resolved if the f1 field contains a non-null object (CallSite, etc.) | |
2055 // This kind of CP cache entry does not need to match the flags byte, because | |
2056 // there is a 1-1 relation between bytecode type and CP entry type. | |
2057 assert(result != noreg, ""); //else do cmpptr(Address(...), (int32_t) NULL_WORD) | |
2058 __ movptr(result, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f1_offset())); | |
2059 __ testptr(result, result); | |
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2060 __ jcc(Assembler::notEqual, resolved); |
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2061 } else { |
1565 | 2062 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range"); |
2063 assert(result == noreg, ""); //else change code for setting result | |
2064 const int shift_count = (1 + byte_no)*BitsPerByte; | |
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2065 __ movl(temp, Address(Rcache, index, Address::times_4, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::indices_offset())); |
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2066 __ shrl(temp, shift_count); |
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2067 // have we resolved this bytecode? |
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2068 __ andl(temp, 0xFF); |
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2069 __ cmpl(temp, (int)bytecode()); |
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2070 __ jcc(Assembler::equal, resolved); |
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2071 } |
0 | 2072 |
2073 // resolve first time through | |
2074 address entry; | |
2075 switch (bytecode()) { | |
2076 case Bytecodes::_getstatic : // fall through | |
2077 case Bytecodes::_putstatic : // fall through | |
2078 case Bytecodes::_getfield : // fall through | |
2079 case Bytecodes::_putfield : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put); break; | |
2080 case Bytecodes::_invokevirtual : // fall through | |
2081 case Bytecodes::_invokespecial : // fall through | |
2082 case Bytecodes::_invokestatic : // fall through | |
2083 case Bytecodes::_invokeinterface: entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); break; | |
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2084 case Bytecodes::_invokedynamic : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic); break; |
1602 | 2085 case Bytecodes::_fast_aldc : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); break; |
2086 case Bytecodes::_fast_aldc_w : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); break; | |
0 | 2087 default : ShouldNotReachHere(); break; |
2088 } | |
2089 __ movl(temp, (int)bytecode()); | |
2090 __ call_VM(noreg, entry, temp); | |
2091 // Update registers with resolved info | |
1565 | 2092 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size); |
2093 if (result != noreg) | |
2094 __ movptr(result, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f1_offset())); | |
0 | 2095 __ bind(resolved); |
2096 } | |
2097 | |
2098 | |
2099 // The cache and index registers must be set before call | |
2100 void TemplateTable::load_field_cp_cache_entry(Register obj, | |
2101 Register cache, | |
2102 Register index, | |
2103 Register off, | |
2104 Register flags, | |
2105 bool is_static = false) { | |
2106 assert_different_registers(cache, index, flags, off); | |
2107 | |
2108 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset(); | |
2109 // Field offset | |
304 | 2110 __ movptr(off, Address(cache, index, Address::times_ptr, |
2111 in_bytes(cp_base_offset + ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2112 // Flags |
304 | 2113 __ movl(flags, Address(cache, index, Address::times_ptr, |
0 | 2114 in_bytes(cp_base_offset + ConstantPoolCacheEntry::flags_offset()))); |
2115 | |
2116 // klass overwrite register | |
2117 if (is_static) { | |
304 | 2118 __ movptr(obj, Address(cache, index, Address::times_ptr, |
2119 in_bytes(cp_base_offset + ConstantPoolCacheEntry::f1_offset()))); | |
0 | 2120 } |
2121 } | |
2122 | |
2123 void TemplateTable::load_invoke_cp_cache_entry(int byte_no, | |
2124 Register method, | |
2125 Register itable_index, | |
2126 Register flags, | |
2127 bool is_invokevirtual, | |
1565 | 2128 bool is_invokevfinal /*unused*/, |
2129 bool is_invokedynamic) { | |
0 | 2130 // setup registers |
2131 const Register cache = rcx; | |
2132 const Register index = rdx; | |
2133 assert_different_registers(method, flags); | |
2134 assert_different_registers(method, cache, index); | |
2135 assert_different_registers(itable_index, flags); | |
2136 assert_different_registers(itable_index, cache, index); | |
2137 // determine constant pool cache field offsets | |
2138 const int method_offset = in_bytes( | |
2139 constantPoolCacheOopDesc::base_offset() + | |
2140 (is_invokevirtual | |
2141 ? ConstantPoolCacheEntry::f2_offset() | |
2142 : ConstantPoolCacheEntry::f1_offset() | |
2143 ) | |
2144 ); | |
2145 const int flags_offset = in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2146 ConstantPoolCacheEntry::flags_offset()); | |
2147 // access constant pool cache fields | |
2148 const int index_offset = in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2149 ConstantPoolCacheEntry::f2_offset()); | |
2150 | |
1565 | 2151 if (byte_no == f1_oop) { |
2152 // Resolved f1_oop goes directly into 'method' register. | |
2153 assert(is_invokedynamic, ""); | |
2154 resolve_cache_and_index(byte_no, method, cache, index, sizeof(u4)); | |
2155 } else { | |
2156 resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2)); | |
2157 __ movptr(method, Address(cache, index, Address::times_ptr, method_offset)); | |
2158 } | |
0 | 2159 if (itable_index != noreg) { |
304 | 2160 __ movptr(itable_index, Address(cache, index, Address::times_ptr, index_offset)); |
0 | 2161 } |
1565 | 2162 __ movl(flags, Address(cache, index, Address::times_ptr, flags_offset)); |
0 | 2163 } |
2164 | |
2165 | |
2166 // The registers cache and index expected to be set before call. | |
2167 // Correct values of the cache and index registers are preserved. | |
2168 void TemplateTable::jvmti_post_field_access(Register cache, | |
2169 Register index, | |
2170 bool is_static, | |
2171 bool has_tos) { | |
2172 if (JvmtiExport::can_post_field_access()) { | |
2173 // Check to see if a field access watch has been set before we take | |
2174 // the time to call into the VM. | |
2175 Label L1; | |
2176 assert_different_registers(cache, index, rax); | |
2177 __ mov32(rax, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2178 __ testl(rax,rax); | |
2179 __ jcc(Assembler::zero, L1); | |
2180 | |
2181 // cache entry pointer | |
304 | 2182 __ addptr(cache, in_bytes(constantPoolCacheOopDesc::base_offset())); |
0 | 2183 __ shll(index, LogBytesPerWord); |
304 | 2184 __ addptr(cache, index); |
0 | 2185 if (is_static) { |
304 | 2186 __ xorptr(rax, rax); // NULL object reference |
0 | 2187 } else { |
2188 __ pop(atos); // Get the object | |
2189 __ verify_oop(rax); | |
2190 __ push(atos); // Restore stack state | |
2191 } | |
2192 // rax,: object pointer or NULL | |
2193 // cache: cache entry pointer | |
2194 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), | |
2195 rax, cache); | |
2196 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2197 __ bind(L1); | |
2198 } | |
2199 } | |
2200 | |
2201 void TemplateTable::pop_and_check_object(Register r) { | |
2202 __ pop_ptr(r); | |
2203 __ null_check(r); // for field access must check obj. | |
2204 __ verify_oop(r); | |
2205 } | |
2206 | |
2207 void TemplateTable::getfield_or_static(int byte_no, bool is_static) { | |
2208 transition(vtos, vtos); | |
2209 | |
2210 const Register cache = rcx; | |
2211 const Register index = rdx; | |
2212 const Register obj = rcx; | |
2213 const Register off = rbx; | |
2214 const Register flags = rax; | |
2215 | |
1565 | 2216 resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2)); |
0 | 2217 jvmti_post_field_access(cache, index, is_static, false); |
2218 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2219 | |
2220 if (!is_static) pop_and_check_object(obj); | |
2221 | |
2222 const Address lo(obj, off, Address::times_1, 0*wordSize); | |
2223 const Address hi(obj, off, Address::times_1, 1*wordSize); | |
2224 | |
2225 Label Done, notByte, notInt, notShort, notChar, notLong, notFloat, notObj, notDouble; | |
2226 | |
2227 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2228 assert(btos == 0, "change code, btos != 0"); | |
2229 // btos | |
304 | 2230 __ andptr(flags, 0x0f); |
0 | 2231 __ jcc(Assembler::notZero, notByte); |
2232 | |
2233 __ load_signed_byte(rax, lo ); | |
2234 __ push(btos); | |
2235 // Rewrite bytecode to be faster | |
2236 if (!is_static) { | |
2237 patch_bytecode(Bytecodes::_fast_bgetfield, rcx, rbx); | |
2238 } | |
2239 __ jmp(Done); | |
2240 | |
2241 __ bind(notByte); | |
2242 // itos | |
2243 __ cmpl(flags, itos ); | |
2244 __ jcc(Assembler::notEqual, notInt); | |
2245 | |
2246 __ movl(rax, lo ); | |
2247 __ push(itos); | |
2248 // Rewrite bytecode to be faster | |
2249 if (!is_static) { | |
2250 patch_bytecode(Bytecodes::_fast_igetfield, rcx, rbx); | |
2251 } | |
2252 __ jmp(Done); | |
2253 | |
2254 __ bind(notInt); | |
2255 // atos | |
2256 __ cmpl(flags, atos ); | |
2257 __ jcc(Assembler::notEqual, notObj); | |
2258 | |
2259 __ movl(rax, lo ); | |
2260 __ push(atos); | |
2261 if (!is_static) { | |
2262 patch_bytecode(Bytecodes::_fast_agetfield, rcx, rbx); | |
2263 } | |
2264 __ jmp(Done); | |
2265 | |
2266 __ bind(notObj); | |
2267 // ctos | |
2268 __ cmpl(flags, ctos ); | |
2269 __ jcc(Assembler::notEqual, notChar); | |
2270 | |
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2271 __ load_unsigned_short(rax, lo ); |
0 | 2272 __ push(ctos); |
2273 if (!is_static) { | |
2274 patch_bytecode(Bytecodes::_fast_cgetfield, rcx, rbx); | |
2275 } | |
2276 __ jmp(Done); | |
2277 | |
2278 __ bind(notChar); | |
2279 // stos | |
2280 __ cmpl(flags, stos ); | |
2281 __ jcc(Assembler::notEqual, notShort); | |
2282 | |
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2283 __ load_signed_short(rax, lo ); |
0 | 2284 __ push(stos); |
2285 if (!is_static) { | |
2286 patch_bytecode(Bytecodes::_fast_sgetfield, rcx, rbx); | |
2287 } | |
2288 __ jmp(Done); | |
2289 | |
2290 __ bind(notShort); | |
2291 // ltos | |
2292 __ cmpl(flags, ltos ); | |
2293 __ jcc(Assembler::notEqual, notLong); | |
2294 | |
2295 // Generate code as if volatile. There just aren't enough registers to | |
2296 // save that information and this code is faster than the test. | |
2297 __ fild_d(lo); // Must load atomically | |
304 | 2298 __ subptr(rsp,2*wordSize); // Make space for store |
0 | 2299 __ fistp_d(Address(rsp,0)); |
304 | 2300 __ pop(rax); |
2301 __ pop(rdx); | |
0 | 2302 |
2303 __ push(ltos); | |
2304 // Don't rewrite to _fast_lgetfield for potential volatile case. | |
2305 __ jmp(Done); | |
2306 | |
2307 __ bind(notLong); | |
2308 // ftos | |
2309 __ cmpl(flags, ftos ); | |
2310 __ jcc(Assembler::notEqual, notFloat); | |
2311 | |
2312 __ fld_s(lo); | |
2313 __ push(ftos); | |
2314 if (!is_static) { | |
2315 patch_bytecode(Bytecodes::_fast_fgetfield, rcx, rbx); | |
2316 } | |
2317 __ jmp(Done); | |
2318 | |
2319 __ bind(notFloat); | |
2320 // dtos | |
2321 __ cmpl(flags, dtos ); | |
2322 __ jcc(Assembler::notEqual, notDouble); | |
2323 | |
2324 __ fld_d(lo); | |
2325 __ push(dtos); | |
2326 if (!is_static) { | |
2327 patch_bytecode(Bytecodes::_fast_dgetfield, rcx, rbx); | |
2328 } | |
2329 __ jmpb(Done); | |
2330 | |
2331 __ bind(notDouble); | |
2332 | |
2333 __ stop("Bad state"); | |
2334 | |
2335 __ bind(Done); | |
2336 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). | |
2337 // volatile_barrier( ); | |
2338 } | |
2339 | |
2340 | |
2341 void TemplateTable::getfield(int byte_no) { | |
2342 getfield_or_static(byte_no, false); | |
2343 } | |
2344 | |
2345 | |
2346 void TemplateTable::getstatic(int byte_no) { | |
2347 getfield_or_static(byte_no, true); | |
2348 } | |
2349 | |
2350 // The registers cache and index expected to be set before call. | |
2351 // The function may destroy various registers, just not the cache and index registers. | |
2352 void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) { | |
2353 | |
2354 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset(); | |
2355 | |
2356 if (JvmtiExport::can_post_field_modification()) { | |
2357 // Check to see if a field modification watch has been set before we take | |
2358 // the time to call into the VM. | |
2359 Label L1; | |
2360 assert_different_registers(cache, index, rax); | |
2361 __ mov32(rax, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
2362 __ testl(rax, rax); | |
2363 __ jcc(Assembler::zero, L1); | |
2364 | |
2365 // The cache and index registers have been already set. | |
2366 // This allows to eliminate this call but the cache and index | |
2367 // registers have to be correspondingly used after this line. | |
2368 __ get_cache_and_index_at_bcp(rax, rdx, 1); | |
2369 | |
2370 if (is_static) { | |
2371 // Life is simple. Null out the object pointer. | |
304 | 2372 __ xorptr(rbx, rbx); |
0 | 2373 } else { |
2374 // Life is harder. The stack holds the value on top, followed by the object. | |
2375 // We don't know the size of the value, though; it could be one or two words | |
2376 // depending on its type. As a result, we must find the type to determine where | |
2377 // the object is. | |
2378 Label two_word, valsize_known; | |
304 | 2379 __ movl(rcx, Address(rax, rdx, Address::times_ptr, in_bytes(cp_base_offset + |
0 | 2380 ConstantPoolCacheEntry::flags_offset()))); |
304 | 2381 __ mov(rbx, rsp); |
0 | 2382 __ shrl(rcx, ConstantPoolCacheEntry::tosBits); |
2383 // Make sure we don't need to mask rcx for tosBits after the above shift | |
2384 ConstantPoolCacheEntry::verify_tosBits(); | |
2385 __ cmpl(rcx, ltos); | |
2386 __ jccb(Assembler::equal, two_word); | |
2387 __ cmpl(rcx, dtos); | |
2388 __ jccb(Assembler::equal, two_word); | |
304 | 2389 __ addptr(rbx, Interpreter::expr_offset_in_bytes(1)); // one word jvalue (not ltos, dtos) |
0 | 2390 __ jmpb(valsize_known); |
2391 | |
2392 __ bind(two_word); | |
304 | 2393 __ addptr(rbx, Interpreter::expr_offset_in_bytes(2)); // two words jvalue |
0 | 2394 |
2395 __ bind(valsize_known); | |
2396 // setup object pointer | |
304 | 2397 __ movptr(rbx, Address(rbx, 0)); |
0 | 2398 } |
2399 // cache entry pointer | |
304 | 2400 __ addptr(rax, in_bytes(cp_base_offset)); |
0 | 2401 __ shll(rdx, LogBytesPerWord); |
304 | 2402 __ addptr(rax, rdx); |
0 | 2403 // object (tos) |
304 | 2404 __ mov(rcx, rsp); |
0 | 2405 // rbx,: object pointer set up above (NULL if static) |
2406 // rax,: cache entry pointer | |
2407 // rcx: jvalue object on the stack | |
2408 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), | |
2409 rbx, rax, rcx); | |
2410 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2411 __ bind(L1); | |
2412 } | |
2413 } | |
2414 | |
2415 | |
2416 void TemplateTable::putfield_or_static(int byte_no, bool is_static) { | |
2417 transition(vtos, vtos); | |
2418 | |
2419 const Register cache = rcx; | |
2420 const Register index = rdx; | |
2421 const Register obj = rcx; | |
2422 const Register off = rbx; | |
2423 const Register flags = rax; | |
2424 | |
1565 | 2425 resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2)); |
0 | 2426 jvmti_post_field_mod(cache, index, is_static); |
2427 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2428 | |
2429 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). | |
2430 // volatile_barrier( ); | |
2431 | |
2432 Label notVolatile, Done; | |
2433 __ movl(rdx, flags); | |
2434 __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2435 __ andl(rdx, 0x1); | |
2436 | |
2437 // field addresses | |
2438 const Address lo(obj, off, Address::times_1, 0*wordSize); | |
2439 const Address hi(obj, off, Address::times_1, 1*wordSize); | |
2440 | |
2441 Label notByte, notInt, notShort, notChar, notLong, notFloat, notObj, notDouble; | |
2442 | |
2443 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2444 assert(btos == 0, "change code, btos != 0"); | |
2445 // btos | |
2446 __ andl(flags, 0x0f); | |
2447 __ jcc(Assembler::notZero, notByte); | |
2448 | |
2449 __ pop(btos); | |
2450 if (!is_static) pop_and_check_object(obj); | |
2451 __ movb(lo, rax ); | |
2452 if (!is_static) { | |
2453 patch_bytecode(Bytecodes::_fast_bputfield, rcx, rbx); | |
2454 } | |
2455 __ jmp(Done); | |
2456 | |
2457 __ bind(notByte); | |
2458 // itos | |
2459 __ cmpl(flags, itos ); | |
2460 __ jcc(Assembler::notEqual, notInt); | |
2461 | |
2462 __ pop(itos); | |
2463 if (!is_static) pop_and_check_object(obj); | |
2464 | |
2465 __ movl(lo, rax ); | |
2466 if (!is_static) { | |
2467 patch_bytecode(Bytecodes::_fast_iputfield, rcx, rbx); | |
2468 } | |
2469 __ jmp(Done); | |
2470 | |
2471 __ bind(notInt); | |
2472 // atos | |
2473 __ cmpl(flags, atos ); | |
2474 __ jcc(Assembler::notEqual, notObj); | |
2475 | |
2476 __ pop(atos); | |
2477 if (!is_static) pop_and_check_object(obj); | |
2478 | |
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2479 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
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2480 |
0 | 2481 if (!is_static) { |
2482 patch_bytecode(Bytecodes::_fast_aputfield, rcx, rbx); | |
2483 } | |
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2484 |
0 | 2485 __ jmp(Done); |
2486 | |
2487 __ bind(notObj); | |
2488 // ctos | |
2489 __ cmpl(flags, ctos ); | |
2490 __ jcc(Assembler::notEqual, notChar); | |
2491 | |
2492 __ pop(ctos); | |
2493 if (!is_static) pop_and_check_object(obj); | |
2494 __ movw(lo, rax ); | |
2495 if (!is_static) { | |
2496 patch_bytecode(Bytecodes::_fast_cputfield, rcx, rbx); | |
2497 } | |
2498 __ jmp(Done); | |
2499 | |
2500 __ bind(notChar); | |
2501 // stos | |
2502 __ cmpl(flags, stos ); | |
2503 __ jcc(Assembler::notEqual, notShort); | |
2504 | |
2505 __ pop(stos); | |
2506 if (!is_static) pop_and_check_object(obj); | |
2507 __ movw(lo, rax ); | |
2508 if (!is_static) { | |
2509 patch_bytecode(Bytecodes::_fast_sputfield, rcx, rbx); | |
2510 } | |
2511 __ jmp(Done); | |
2512 | |
2513 __ bind(notShort); | |
2514 // ltos | |
2515 __ cmpl(flags, ltos ); | |
2516 __ jcc(Assembler::notEqual, notLong); | |
2517 | |
2518 Label notVolatileLong; | |
2519 __ testl(rdx, rdx); | |
2520 __ jcc(Assembler::zero, notVolatileLong); | |
2521 | |
2522 __ pop(ltos); // overwrites rdx, do this after testing volatile. | |
2523 if (!is_static) pop_and_check_object(obj); | |
2524 | |
2525 // Replace with real volatile test | |
304 | 2526 __ push(rdx); |
2527 __ push(rax); // Must update atomically with FIST | |
0 | 2528 __ fild_d(Address(rsp,0)); // So load into FPU register |
2529 __ fistp_d(lo); // and put into memory atomically | |
304 | 2530 __ addptr(rsp, 2*wordSize); |
2531 // volatile_barrier(); | |
2532 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | | |
2533 Assembler::StoreStore)); | |
0 | 2534 // Don't rewrite volatile version |
2535 __ jmp(notVolatile); | |
2536 | |
2537 __ bind(notVolatileLong); | |
2538 | |
2539 __ pop(ltos); // overwrites rdx | |
2540 if (!is_static) pop_and_check_object(obj); | |
304 | 2541 NOT_LP64(__ movptr(hi, rdx)); |
2542 __ movptr(lo, rax); | |
0 | 2543 if (!is_static) { |
2544 patch_bytecode(Bytecodes::_fast_lputfield, rcx, rbx); | |
2545 } | |
2546 __ jmp(notVolatile); | |
2547 | |
2548 __ bind(notLong); | |
2549 // ftos | |
2550 __ cmpl(flags, ftos ); | |
2551 __ jcc(Assembler::notEqual, notFloat); | |
2552 | |
2553 __ pop(ftos); | |
2554 if (!is_static) pop_and_check_object(obj); | |
2555 __ fstp_s(lo); | |
2556 if (!is_static) { | |
2557 patch_bytecode(Bytecodes::_fast_fputfield, rcx, rbx); | |
2558 } | |
2559 __ jmp(Done); | |
2560 | |
2561 __ bind(notFloat); | |
2562 // dtos | |
2563 __ cmpl(flags, dtos ); | |
2564 __ jcc(Assembler::notEqual, notDouble); | |
2565 | |
2566 __ pop(dtos); | |
2567 if (!is_static) pop_and_check_object(obj); | |
2568 __ fstp_d(lo); | |
2569 if (!is_static) { | |
2570 patch_bytecode(Bytecodes::_fast_dputfield, rcx, rbx); | |
2571 } | |
2572 __ jmp(Done); | |
2573 | |
2574 __ bind(notDouble); | |
2575 | |
2576 __ stop("Bad state"); | |
2577 | |
2578 __ bind(Done); | |
2579 | |
2580 // Check for volatile store | |
2581 __ testl(rdx, rdx); | |
2582 __ jcc(Assembler::zero, notVolatile); | |
304 | 2583 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | |
2584 Assembler::StoreStore)); | |
0 | 2585 __ bind(notVolatile); |
2586 } | |
2587 | |
2588 | |
2589 void TemplateTable::putfield(int byte_no) { | |
2590 putfield_or_static(byte_no, false); | |
2591 } | |
2592 | |
2593 | |
2594 void TemplateTable::putstatic(int byte_no) { | |
2595 putfield_or_static(byte_no, true); | |
2596 } | |
2597 | |
2598 void TemplateTable::jvmti_post_fast_field_mod() { | |
2599 if (JvmtiExport::can_post_field_modification()) { | |
2600 // Check to see if a field modification watch has been set before we take | |
2601 // the time to call into the VM. | |
2602 Label L2; | |
2603 __ mov32(rcx, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
2604 __ testl(rcx,rcx); | |
2605 __ jcc(Assembler::zero, L2); | |
2606 __ pop_ptr(rbx); // copy the object pointer from tos | |
2607 __ verify_oop(rbx); | |
2608 __ push_ptr(rbx); // put the object pointer back on tos | |
304 | 2609 __ subptr(rsp, sizeof(jvalue)); // add space for a jvalue object |
2610 __ mov(rcx, rsp); | |
0 | 2611 __ push_ptr(rbx); // save object pointer so we can steal rbx, |
304 | 2612 __ xorptr(rbx, rbx); |
0 | 2613 const Address lo_value(rcx, rbx, Address::times_1, 0*wordSize); |
2614 const Address hi_value(rcx, rbx, Address::times_1, 1*wordSize); | |
2615 switch (bytecode()) { // load values into the jvalue object | |
2616 case Bytecodes::_fast_bputfield: __ movb(lo_value, rax); break; | |
2617 case Bytecodes::_fast_sputfield: __ movw(lo_value, rax); break; | |
2618 case Bytecodes::_fast_cputfield: __ movw(lo_value, rax); break; | |
2619 case Bytecodes::_fast_iputfield: __ movl(lo_value, rax); break; | |
304 | 2620 case Bytecodes::_fast_lputfield: |
2621 NOT_LP64(__ movptr(hi_value, rdx)); | |
2622 __ movptr(lo_value, rax); | |
2623 break; | |
2624 | |
0 | 2625 // need to call fld_s() after fstp_s() to restore the value for below |
2626 case Bytecodes::_fast_fputfield: __ fstp_s(lo_value); __ fld_s(lo_value); break; | |
304 | 2627 |
0 | 2628 // need to call fld_d() after fstp_d() to restore the value for below |
2629 case Bytecodes::_fast_dputfield: __ fstp_d(lo_value); __ fld_d(lo_value); break; | |
304 | 2630 |
0 | 2631 // since rcx is not an object we don't call store_check() here |
304 | 2632 case Bytecodes::_fast_aputfield: __ movptr(lo_value, rax); break; |
2633 | |
0 | 2634 default: ShouldNotReachHere(); |
2635 } | |
2636 __ pop_ptr(rbx); // restore copy of object pointer | |
2637 | |
2638 // Save rax, and sometimes rdx because call_VM() will clobber them, | |
2639 // then use them for JVM/DI purposes | |
304 | 2640 __ push(rax); |
2641 if (bytecode() == Bytecodes::_fast_lputfield) __ push(rdx); | |
0 | 2642 // access constant pool cache entry |
2643 __ get_cache_entry_pointer_at_bcp(rax, rdx, 1); | |
2644 __ verify_oop(rbx); | |
2645 // rbx,: object pointer copied above | |
2646 // rax,: cache entry pointer | |
2647 // rcx: jvalue object on the stack | |
2648 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), rbx, rax, rcx); | |
304 | 2649 if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx); // restore high value |
2650 __ pop(rax); // restore lower value | |
2651 __ addptr(rsp, sizeof(jvalue)); // release jvalue object space | |
0 | 2652 __ bind(L2); |
2653 } | |
2654 } | |
2655 | |
2656 void TemplateTable::fast_storefield(TosState state) { | |
2657 transition(state, vtos); | |
2658 | |
2659 ByteSize base = constantPoolCacheOopDesc::base_offset(); | |
2660 | |
2661 jvmti_post_fast_field_mod(); | |
2662 | |
2663 // access constant pool cache | |
2664 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2665 | |
2666 // test for volatile with rdx but rdx is tos register for lputfield. | |
304 | 2667 if (bytecode() == Bytecodes::_fast_lputfield) __ push(rdx); |
2668 __ movl(rdx, Address(rcx, rbx, Address::times_ptr, in_bytes(base + | |
0 | 2669 ConstantPoolCacheEntry::flags_offset()))); |
2670 | |
2671 // replace index with field offset from cache entry | |
304 | 2672 __ movptr(rbx, Address(rcx, rbx, Address::times_ptr, in_bytes(base + ConstantPoolCacheEntry::f2_offset()))); |
0 | 2673 |
2674 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). | |
2675 // volatile_barrier( ); | |
2676 | |
2677 Label notVolatile, Done; | |
2678 __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2679 __ andl(rdx, 0x1); | |
2680 // Check for volatile store | |
2681 __ testl(rdx, rdx); | |
2682 __ jcc(Assembler::zero, notVolatile); | |
2683 | |
304 | 2684 if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx); |
0 | 2685 |
2686 // Get object from stack | |
2687 pop_and_check_object(rcx); | |
2688 | |
2689 // field addresses | |
2690 const Address lo(rcx, rbx, Address::times_1, 0*wordSize); | |
2691 const Address hi(rcx, rbx, Address::times_1, 1*wordSize); | |
2692 | |
2693 // access field | |
2694 switch (bytecode()) { | |
2695 case Bytecodes::_fast_bputfield: __ movb(lo, rax); break; | |
2696 case Bytecodes::_fast_sputfield: // fall through | |
2697 case Bytecodes::_fast_cputfield: __ movw(lo, rax); break; | |
2698 case Bytecodes::_fast_iputfield: __ movl(lo, rax); break; | |
304 | 2699 case Bytecodes::_fast_lputfield: |
2700 NOT_LP64(__ movptr(hi, rdx)); | |
2701 __ movptr(lo, rax); | |
2702 break; | |
0 | 2703 case Bytecodes::_fast_fputfield: __ fstp_s(lo); break; |
2704 case Bytecodes::_fast_dputfield: __ fstp_d(lo); break; | |
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2705 case Bytecodes::_fast_aputfield: { |
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2706 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
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2707 break; |
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2708 } |
0 | 2709 default: |
2710 ShouldNotReachHere(); | |
2711 } | |
2712 | |
2713 Label done; | |
304 | 2714 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | |
2715 Assembler::StoreStore)); | |
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2716 // Barriers are so large that short branch doesn't reach! |
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2717 __ jmp(done); |
0 | 2718 |
2719 // Same code as above, but don't need rdx to test for volatile. | |
2720 __ bind(notVolatile); | |
2721 | |
304 | 2722 if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx); |
0 | 2723 |
2724 // Get object from stack | |
2725 pop_and_check_object(rcx); | |
2726 | |
2727 // access field | |
2728 switch (bytecode()) { | |
2729 case Bytecodes::_fast_bputfield: __ movb(lo, rax); break; | |
2730 case Bytecodes::_fast_sputfield: // fall through | |
2731 case Bytecodes::_fast_cputfield: __ movw(lo, rax); break; | |
2732 case Bytecodes::_fast_iputfield: __ movl(lo, rax); break; | |
304 | 2733 case Bytecodes::_fast_lputfield: |
2734 NOT_LP64(__ movptr(hi, rdx)); | |
2735 __ movptr(lo, rax); | |
2736 break; | |
0 | 2737 case Bytecodes::_fast_fputfield: __ fstp_s(lo); break; |
2738 case Bytecodes::_fast_dputfield: __ fstp_d(lo); break; | |
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2739 case Bytecodes::_fast_aputfield: { |
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2740 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
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2741 break; |
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2742 } |
0 | 2743 default: |
2744 ShouldNotReachHere(); | |
2745 } | |
2746 __ bind(done); | |
2747 } | |
2748 | |
2749 | |
2750 void TemplateTable::fast_accessfield(TosState state) { | |
2751 transition(atos, state); | |
2752 | |
2753 // do the JVMTI work here to avoid disturbing the register state below | |
2754 if (JvmtiExport::can_post_field_access()) { | |
2755 // Check to see if a field access watch has been set before we take | |
2756 // the time to call into the VM. | |
2757 Label L1; | |
2758 __ mov32(rcx, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2759 __ testl(rcx,rcx); | |
2760 __ jcc(Assembler::zero, L1); | |
2761 // access constant pool cache entry | |
2762 __ get_cache_entry_pointer_at_bcp(rcx, rdx, 1); | |
2763 __ push_ptr(rax); // save object pointer before call_VM() clobbers it | |
2764 __ verify_oop(rax); | |
2765 // rax,: object pointer copied above | |
2766 // rcx: cache entry pointer | |
2767 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), rax, rcx); | |
2768 __ pop_ptr(rax); // restore object pointer | |
2769 __ bind(L1); | |
2770 } | |
2771 | |
2772 // access constant pool cache | |
2773 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2774 // replace index with field offset from cache entry | |
304 | 2775 __ movptr(rbx, Address(rcx, |
2776 rbx, | |
2777 Address::times_ptr, | |
2778 in_bytes(constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2779 |
2780 | |
2781 // rax,: object | |
2782 __ verify_oop(rax); | |
2783 __ null_check(rax); | |
2784 // field addresses | |
2785 const Address lo = Address(rax, rbx, Address::times_1, 0*wordSize); | |
2786 const Address hi = Address(rax, rbx, Address::times_1, 1*wordSize); | |
2787 | |
2788 // access field | |
2789 switch (bytecode()) { | |
304 | 2790 case Bytecodes::_fast_bgetfield: __ movsbl(rax, lo ); break; |
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2791 case Bytecodes::_fast_sgetfield: __ load_signed_short(rax, lo ); break; |
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2792 case Bytecodes::_fast_cgetfield: __ load_unsigned_short(rax, lo ); break; |
0 | 2793 case Bytecodes::_fast_igetfield: __ movl(rax, lo); break; |
2794 case Bytecodes::_fast_lgetfield: __ stop("should not be rewritten"); break; | |
2795 case Bytecodes::_fast_fgetfield: __ fld_s(lo); break; | |
2796 case Bytecodes::_fast_dgetfield: __ fld_d(lo); break; | |
304 | 2797 case Bytecodes::_fast_agetfield: __ movptr(rax, lo); __ verify_oop(rax); break; |
0 | 2798 default: |
2799 ShouldNotReachHere(); | |
2800 } | |
2801 | |
2802 // Doug Lea believes this is not needed with current Sparcs(TSO) and Intel(PSO) | |
2803 // volatile_barrier( ); | |
2804 } | |
2805 | |
2806 void TemplateTable::fast_xaccess(TosState state) { | |
2807 transition(vtos, state); | |
2808 // get receiver | |
304 | 2809 __ movptr(rax, aaddress(0)); |
0 | 2810 // access constant pool cache |
2811 __ get_cache_and_index_at_bcp(rcx, rdx, 2); | |
304 | 2812 __ movptr(rbx, Address(rcx, |
2813 rdx, | |
2814 Address::times_ptr, | |
2815 in_bytes(constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2816 // make sure exception is reported in correct bcp range (getfield is next instruction) |
2817 __ increment(rsi); | |
2818 __ null_check(rax); | |
2819 const Address lo = Address(rax, rbx, Address::times_1, 0*wordSize); | |
2820 if (state == itos) { | |
2821 __ movl(rax, lo); | |
2822 } else if (state == atos) { | |
304 | 2823 __ movptr(rax, lo); |
0 | 2824 __ verify_oop(rax); |
2825 } else if (state == ftos) { | |
2826 __ fld_s(lo); | |
2827 } else { | |
2828 ShouldNotReachHere(); | |
2829 } | |
2830 __ decrement(rsi); | |
2831 } | |
2832 | |
2833 | |
2834 | |
2835 //---------------------------------------------------------------------------------------------------- | |
2836 // Calls | |
2837 | |
2838 void TemplateTable::count_calls(Register method, Register temp) { | |
2839 // implemented elsewhere | |
2840 ShouldNotReachHere(); | |
2841 } | |
2842 | |
2843 | |
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2844 void TemplateTable::prepare_invoke(Register method, Register index, int byte_no) { |
0 | 2845 // determine flags |
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2846 Bytecodes::Code code = bytecode(); |
0 | 2847 const bool is_invokeinterface = code == Bytecodes::_invokeinterface; |
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2848 const bool is_invokedynamic = code == Bytecodes::_invokedynamic; |
0 | 2849 const bool is_invokevirtual = code == Bytecodes::_invokevirtual; |
2850 const bool is_invokespecial = code == Bytecodes::_invokespecial; | |
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2851 const bool load_receiver = (code != Bytecodes::_invokestatic && code != Bytecodes::_invokedynamic); |
0 | 2852 const bool receiver_null_check = is_invokespecial; |
2853 const bool save_flags = is_invokeinterface || is_invokevirtual; | |
2854 // setup registers & access constant pool cache | |
2855 const Register recv = rcx; | |
2856 const Register flags = rdx; | |
2857 assert_different_registers(method, index, recv, flags); | |
2858 | |
2859 // save 'interpreter return address' | |
2860 __ save_bcp(); | |
2861 | |
1565 | 2862 load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual, false, is_invokedynamic); |
0 | 2863 |
2864 // load receiver if needed (note: no return address pushed yet) | |
2865 if (load_receiver) { | |
1565 | 2866 assert(!is_invokedynamic, ""); |
0 | 2867 __ movl(recv, flags); |
2868 __ andl(recv, 0xFF); | |
2869 // recv count is 0 based? | |
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2870 Address recv_addr(rsp, recv, Interpreter::stackElementScale(), -Interpreter::expr_offset_in_bytes(1)); |
1304 | 2871 __ movptr(recv, recv_addr); |
2872 __ verify_oop(recv); | |
0 | 2873 } |
2874 | |
2875 // do null check if needed | |
2876 if (receiver_null_check) { | |
2877 __ null_check(recv); | |
2878 } | |
2879 | |
2880 if (save_flags) { | |
304 | 2881 __ mov(rsi, flags); |
0 | 2882 } |
2883 | |
2884 // compute return type | |
2885 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2886 // Make sure we don't need to mask flags for tosBits after the above shift | |
2887 ConstantPoolCacheEntry::verify_tosBits(); | |
2888 // load return address | |
304 | 2889 { |
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2890 address table_addr; |
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2891 if (is_invokeinterface || is_invokedynamic) |
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2892 table_addr = (address)Interpreter::return_5_addrs_by_index_table(); |
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2893 else |
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2894 table_addr = (address)Interpreter::return_3_addrs_by_index_table(); |
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2895 ExternalAddress table(table_addr); |
304 | 2896 __ movptr(flags, ArrayAddress(table, Address(noreg, flags, Address::times_ptr))); |
0 | 2897 } |
2898 | |
2899 // push return address | |
304 | 2900 __ push(flags); |
0 | 2901 |
2902 // Restore flag value from the constant pool cache, and restore rsi | |
2903 // for later null checks. rsi is the bytecode pointer | |
2904 if (save_flags) { | |
304 | 2905 __ mov(flags, rsi); |
0 | 2906 __ restore_bcp(); |
2907 } | |
2908 } | |
2909 | |
2910 | |
2911 void TemplateTable::invokevirtual_helper(Register index, Register recv, | |
2912 Register flags) { | |
2913 | |
2914 // Uses temporary registers rax, rdx | |
2915 assert_different_registers(index, recv, rax, rdx); | |
2916 | |
2917 // Test for an invoke of a final method | |
2918 Label notFinal; | |
2919 __ movl(rax, flags); | |
2920 __ andl(rax, (1 << ConstantPoolCacheEntry::vfinalMethod)); | |
2921 __ jcc(Assembler::zero, notFinal); | |
2922 | |
2923 Register method = index; // method must be rbx, | |
2924 assert(method == rbx, "methodOop must be rbx, for interpreter calling convention"); | |
2925 | |
2926 // do the call - the index is actually the method to call | |
2927 __ verify_oop(method); | |
2928 | |
2929 // It's final, need a null check here! | |
2930 __ null_check(recv); | |
2931 | |
2932 // profile this call | |
2933 __ profile_final_call(rax); | |
2934 | |
2935 __ jump_from_interpreted(method, rax); | |
2936 | |
2937 __ bind(notFinal); | |
2938 | |
2939 // get receiver klass | |
2940 __ null_check(recv, oopDesc::klass_offset_in_bytes()); | |
2941 // Keep recv in rcx for callee expects it there | |
304 | 2942 __ movptr(rax, Address(recv, oopDesc::klass_offset_in_bytes())); |
0 | 2943 __ verify_oop(rax); |
2944 | |
2945 // profile this call | |
2946 __ profile_virtual_call(rax, rdi, rdx); | |
2947 | |
2948 // get target methodOop & entry point | |
2949 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
2950 assert(vtableEntry::size() * wordSize == 4, "adjust the scaling in the code below"); | |
304 | 2951 __ movptr(method, Address(rax, index, Address::times_ptr, base + vtableEntry::method_offset_in_bytes())); |
0 | 2952 __ jump_from_interpreted(method, rdx); |
2953 } | |
2954 | |
2955 | |
2956 void TemplateTable::invokevirtual(int byte_no) { | |
2957 transition(vtos, vtos); | |
1565 | 2958 assert(byte_no == f2_byte, "use this argument"); |
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2959 prepare_invoke(rbx, noreg, byte_no); |
0 | 2960 |
2961 // rbx,: index | |
2962 // rcx: receiver | |
2963 // rdx: flags | |
2964 | |
2965 invokevirtual_helper(rbx, rcx, rdx); | |
2966 } | |
2967 | |
2968 | |
2969 void TemplateTable::invokespecial(int byte_no) { | |
2970 transition(vtos, vtos); | |
1565 | 2971 assert(byte_no == f1_byte, "use this argument"); |
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2972 prepare_invoke(rbx, noreg, byte_no); |
0 | 2973 // do the call |
2974 __ verify_oop(rbx); | |
2975 __ profile_call(rax); | |
2976 __ jump_from_interpreted(rbx, rax); | |
2977 } | |
2978 | |
2979 | |
2980 void TemplateTable::invokestatic(int byte_no) { | |
2981 transition(vtos, vtos); | |
1565 | 2982 assert(byte_no == f1_byte, "use this argument"); |
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2983 prepare_invoke(rbx, noreg, byte_no); |
0 | 2984 // do the call |
2985 __ verify_oop(rbx); | |
2986 __ profile_call(rax); | |
2987 __ jump_from_interpreted(rbx, rax); | |
2988 } | |
2989 | |
2990 | |
2991 void TemplateTable::fast_invokevfinal(int byte_no) { | |
2992 transition(vtos, vtos); | |
1565 | 2993 assert(byte_no == f2_byte, "use this argument"); |
0 | 2994 __ stop("fast_invokevfinal not used on x86"); |
2995 } | |
2996 | |
2997 | |
2998 void TemplateTable::invokeinterface(int byte_no) { | |
2999 transition(vtos, vtos); | |
1565 | 3000 assert(byte_no == f1_byte, "use this argument"); |
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3001 prepare_invoke(rax, rbx, byte_no); |
0 | 3002 |
3003 // rax,: Interface | |
3004 // rbx,: index | |
3005 // rcx: receiver | |
3006 // rdx: flags | |
3007 | |
3008 // Special case of invokeinterface called for virtual method of | |
3009 // java.lang.Object. See cpCacheOop.cpp for details. | |
3010 // This code isn't produced by javac, but could be produced by | |
3011 // another compliant java compiler. | |
3012 Label notMethod; | |
3013 __ movl(rdi, rdx); | |
3014 __ andl(rdi, (1 << ConstantPoolCacheEntry::methodInterface)); | |
3015 __ jcc(Assembler::zero, notMethod); | |
3016 | |
3017 invokevirtual_helper(rbx, rcx, rdx); | |
3018 __ bind(notMethod); | |
3019 | |
3020 // Get receiver klass into rdx - also a null check | |
3021 __ restore_locals(); // restore rdi | |
304 | 3022 __ movptr(rdx, Address(rcx, oopDesc::klass_offset_in_bytes())); |
0 | 3023 __ verify_oop(rdx); |
3024 | |
3025 // profile this call | |
3026 __ profile_virtual_call(rdx, rsi, rdi); | |
3027 | |
623
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3028 Label no_such_interface, no_such_method; |
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3029 |
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3030 __ lookup_interface_method(// inputs: rec. class, interface, itable index |
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3031 rdx, rax, rbx, |
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3032 // outputs: method, scan temp. reg |
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3033 rbx, rsi, |
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3034 no_such_interface); |
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3035 |
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3036 // rbx,: methodOop to call |
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3037 // rcx: receiver |
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3038 // Check for abstract method error |
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3039 // Note: This should be done more efficiently via a throw_abstract_method_error |
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3040 // interpreter entry point and a conditional jump to it in case of a null |
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3041 // method. |
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3042 __ testptr(rbx, rbx); |
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3043 __ jcc(Assembler::zero, no_such_method); |
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3044 |
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3045 // do the call |
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3046 // rcx: receiver |
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3047 // rbx,: methodOop |
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3048 __ jump_from_interpreted(rbx, rdx); |
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3049 __ should_not_reach_here(); |
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3050 |
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3051 // exception handling code follows... |
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3052 // note: must restore interpreter registers to canonical |
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3053 // state for exception handling to work correctly! |
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3054 |
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3055 __ bind(no_such_method); |
0 | 3056 // throw exception |
623
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3057 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
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3058 __ restore_bcp(); // rsi must be correct for exception handler (was destroyed) |
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3059 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
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3060 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError)); |
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3061 // the call_VM checks for exception, so we should never return here. |
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3062 __ should_not_reach_here(); |
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3063 |
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3064 __ bind(no_such_interface); |
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3065 // throw exception |
304 | 3066 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
0 | 3067 __ restore_bcp(); // rsi must be correct for exception handler (was destroyed) |
3068 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) | |
3069 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
3070 InterpreterRuntime::throw_IncompatibleClassChangeError)); | |
3071 // the call_VM checks for exception, so we should never return here. | |
3072 __ should_not_reach_here(); | |
3073 } | |
3074 | |
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3075 void TemplateTable::invokedynamic(int byte_no) { |
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3076 transition(vtos, vtos); |
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3077 |
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3078 if (!EnableInvokeDynamic) { |
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3079 // We should not encounter this bytecode if !EnableInvokeDynamic. |
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3080 // The verifier will stop it. However, if we get past the verifier, |
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3081 // this will stop the thread in a reasonable way, without crashing the JVM. |
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3082 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
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3083 InterpreterRuntime::throw_IncompatibleClassChangeError)); |
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3084 // the call_VM checks for exception, so we should never return here. |
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3085 __ should_not_reach_here(); |
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3086 return; |
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3087 } |
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3088 |
1565 | 3089 assert(byte_no == f1_oop, "use this argument"); |
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3090 prepare_invoke(rax, rbx, byte_no); |
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3091 |
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3092 // rax: CallSite object (f1) |
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3093 // rbx: unused (f2) |
1846 | 3094 // rcx: receiver address |
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3095 // rdx: flags (unused) |
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3096 |
1846 | 3097 Register rax_callsite = rax; |
3098 Register rcx_method_handle = rcx; | |
3099 | |
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3100 if (ProfileInterpreter) { |
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3101 // %%% should make a type profile for any invokedynamic that takes a ref argument |
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3102 // profile this call |
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3103 __ profile_call(rsi); |
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3104 } |
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3105 |
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3106 __ movptr(rcx_method_handle, Address(rax_callsite, __ delayed_value(java_lang_invoke_CallSite::target_offset_in_bytes, rcx))); |
1846 | 3107 __ null_check(rcx_method_handle); |
726
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3108 __ prepare_to_jump_from_interpreted(); |
1846 | 3109 __ jump_to_method_handle_entry(rcx_method_handle, rdx); |
726
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3110 } |
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3111 |
0 | 3112 //---------------------------------------------------------------------------------------------------- |
3113 // Allocation | |
3114 | |
3115 void TemplateTable::_new() { | |
3116 transition(vtos, atos); | |
3117 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3118 Label slow_case; | |
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3119 Label slow_case_no_pop; |
0 | 3120 Label done; |
3121 Label initialize_header; | |
3122 Label initialize_object; // including clearing the fields | |
3123 Label allocate_shared; | |
3124 | |
3125 __ get_cpool_and_tags(rcx, rax); | |
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3126 |
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3127 // Make sure the class we're about to instantiate has been resolved. |
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3128 // This is done before loading instanceKlass to be consistent with the order |
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3129 // how Constant Pool is updated (see constantPoolOopDesc::klass_at_put) |
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3130 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; |
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3131 __ cmpb(Address(rax, rdx, Address::times_1, tags_offset), JVM_CONSTANT_Class); |
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3132 __ jcc(Assembler::notEqual, slow_case_no_pop); |
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3133 |
0 | 3134 // get instanceKlass |
304 | 3135 __ movptr(rcx, Address(rcx, rdx, Address::times_ptr, sizeof(constantPoolOopDesc))); |
3136 __ push(rcx); // save the contexts of klass for initializing the header | |
0 | 3137 |
3138 // make sure klass is initialized & doesn't have finalizer | |
3139 // make sure klass is fully initialized | |
3140 __ cmpl(Address(rcx, instanceKlass::init_state_offset_in_bytes() + sizeof(oopDesc)), instanceKlass::fully_initialized); | |
3141 __ jcc(Assembler::notEqual, slow_case); | |
3142 | |
3143 // get instance_size in instanceKlass (scaled to a count of bytes) | |
3144 __ movl(rdx, Address(rcx, Klass::layout_helper_offset_in_bytes() + sizeof(oopDesc))); | |
3145 // test to see if it has a finalizer or is malformed in some way | |
3146 __ testl(rdx, Klass::_lh_instance_slow_path_bit); | |
3147 __ jcc(Assembler::notZero, slow_case); | |
3148 | |
3149 // | |
3150 // Allocate the instance | |
3151 // 1) Try to allocate in the TLAB | |
3152 // 2) if fail and the object is large allocate in the shared Eden | |
3153 // 3) if the above fails (or is not applicable), go to a slow case | |
3154 // (creates a new TLAB, etc.) | |
3155 | |
3156 const bool allow_shared_alloc = | |
3157 Universe::heap()->supports_inline_contig_alloc() && !CMSIncrementalMode; | |
3158 | |
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3159 const Register thread = rcx; |
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3160 if (UseTLAB || allow_shared_alloc) { |
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3161 __ get_thread(thread); |
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3162 } |
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3163 |
0 | 3164 if (UseTLAB) { |
304 | 3165 __ movptr(rax, Address(thread, in_bytes(JavaThread::tlab_top_offset()))); |
3166 __ lea(rbx, Address(rax, rdx, Address::times_1)); | |
3167 __ cmpptr(rbx, Address(thread, in_bytes(JavaThread::tlab_end_offset()))); | |
0 | 3168 __ jcc(Assembler::above, allow_shared_alloc ? allocate_shared : slow_case); |
304 | 3169 __ movptr(Address(thread, in_bytes(JavaThread::tlab_top_offset())), rbx); |
0 | 3170 if (ZeroTLAB) { |
3171 // the fields have been already cleared | |
3172 __ jmp(initialize_header); | |
3173 } else { | |
3174 // initialize both the header and fields | |
3175 __ jmp(initialize_object); | |
3176 } | |
3177 } | |
3178 | |
3179 // Allocation in the shared Eden, if allowed. | |
3180 // | |
3181 // rdx: instance size in bytes | |
3182 if (allow_shared_alloc) { | |
3183 __ bind(allocate_shared); | |
3184 | |
342
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3185 ExternalAddress heap_top((address)Universe::heap()->top_addr()); |
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3186 |
0 | 3187 Label retry; |
3188 __ bind(retry); | |
304 | 3189 __ movptr(rax, heap_top); |
3190 __ lea(rbx, Address(rax, rdx, Address::times_1)); | |
3191 __ cmpptr(rbx, ExternalAddress((address)Universe::heap()->end_addr())); | |
0 | 3192 __ jcc(Assembler::above, slow_case); |
3193 | |
3194 // Compare rax, with the top addr, and if still equal, store the new | |
3195 // top addr in rbx, at the address of the top addr pointer. Sets ZF if was | |
3196 // equal, and clears it otherwise. Use lock prefix for atomicity on MPs. | |
3197 // | |
3198 // rax,: object begin | |
3199 // rbx,: object end | |
3200 // rdx: instance size in bytes | |
304 | 3201 __ locked_cmpxchgptr(rbx, heap_top); |
0 | 3202 |
3203 // if someone beat us on the allocation, try again, otherwise continue | |
3204 __ jcc(Assembler::notEqual, retry); | |
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3205 |
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3206 __ incr_allocated_bytes(thread, rdx, 0); |
0 | 3207 } |
3208 | |
3209 if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) { | |
3210 // The object is initialized before the header. If the object size is | |
3211 // zero, go directly to the header initialization. | |
3212 __ bind(initialize_object); | |
3213 __ decrement(rdx, sizeof(oopDesc)); | |
3214 __ jcc(Assembler::zero, initialize_header); | |
3215 | |
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3216 // Initialize topmost object field, divide rdx by 8, check if odd and |
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3217 // test if zero. |
0 | 3218 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) |
3219 __ shrl(rdx, LogBytesPerLong); // divide by 2*oopSize and set carry flag if odd | |
3220 | |
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3221 // rdx must have been multiple of 8 |
0 | 3222 #ifdef ASSERT |
3223 // make sure rdx was multiple of 8 | |
3224 Label L; | |
3225 // Ignore partial flag stall after shrl() since it is debug VM | |
3226 __ jccb(Assembler::carryClear, L); | |
3227 __ stop("object size is not multiple of 2 - adjust this code"); | |
3228 __ bind(L); | |
3229 // rdx must be > 0, no extra check needed here | |
3230 #endif | |
3231 | |
3232 // initialize remaining object fields: rdx was a multiple of 8 | |
3233 { Label loop; | |
3234 __ bind(loop); | |
304 | 3235 __ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 1*oopSize), rcx); |
3236 NOT_LP64(__ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 2*oopSize), rcx)); | |
0 | 3237 __ decrement(rdx); |
3238 __ jcc(Assembler::notZero, loop); | |
3239 } | |
3240 | |
3241 // initialize object header only. | |
3242 __ bind(initialize_header); | |
3243 if (UseBiasedLocking) { | |
304 | 3244 __ pop(rcx); // get saved klass back in the register. |
3245 __ movptr(rbx, Address(rcx, Klass::prototype_header_offset_in_bytes() + klassOopDesc::klass_part_offset_in_bytes())); | |
3246 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()), rbx); | |
0 | 3247 } else { |
304 | 3248 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()), |
3249 (int32_t)markOopDesc::prototype()); // header | |
3250 __ pop(rcx); // get saved klass back in the register. | |
0 | 3251 } |
304 | 3252 __ movptr(Address(rax, oopDesc::klass_offset_in_bytes()), rcx); // klass |
0 | 3253 |
3254 { | |
3255 SkipIfEqual skip_if(_masm, &DTraceAllocProbes, 0); | |
3256 // Trigger dtrace event for fastpath | |
3257 __ push(atos); | |
3258 __ call_VM_leaf( | |
3259 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), rax); | |
3260 __ pop(atos); | |
3261 } | |
3262 | |
3263 __ jmp(done); | |
3264 } | |
3265 | |
3266 // slow case | |
3267 __ bind(slow_case); | |
304 | 3268 __ pop(rcx); // restore stack pointer to what it was when we came in. |
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3269 __ bind(slow_case_no_pop); |
0 | 3270 __ get_constant_pool(rax); |
3271 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3272 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), rax, rdx); | |
3273 | |
3274 // continue | |
3275 __ bind(done); | |
3276 } | |
3277 | |
3278 | |
3279 void TemplateTable::newarray() { | |
3280 transition(itos, atos); | |
3281 __ push_i(rax); // make sure everything is on the stack | |
3282 __ load_unsigned_byte(rdx, at_bcp(1)); | |
3283 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray), rdx, rax); | |
3284 __ pop_i(rdx); // discard size | |
3285 } | |
3286 | |
3287 | |
3288 void TemplateTable::anewarray() { | |
3289 transition(itos, atos); | |
3290 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3291 __ get_constant_pool(rcx); | |
3292 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray), rcx, rdx, rax); | |
3293 } | |
3294 | |
3295 | |
3296 void TemplateTable::arraylength() { | |
3297 transition(atos, itos); | |
3298 __ null_check(rax, arrayOopDesc::length_offset_in_bytes()); | |
3299 __ movl(rax, Address(rax, arrayOopDesc::length_offset_in_bytes())); | |
3300 } | |
3301 | |
3302 | |
3303 void TemplateTable::checkcast() { | |
3304 transition(atos, atos); | |
3305 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3306 __ testptr(rax, rax); // Object is in EAX |
0 | 3307 __ jcc(Assembler::zero, is_null); |
3308 | |
3309 // Get cpool & tags index | |
3310 __ get_cpool_and_tags(rcx, rdx); // ECX=cpool, EDX=tags array | |
3311 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // EBX=index | |
3312 // See if bytecode has already been quicked | |
3313 __ cmpb(Address(rdx, rbx, Address::times_1, typeArrayOopDesc::header_size(T_BYTE) * wordSize), JVM_CONSTANT_Class); | |
3314 __ jcc(Assembler::equal, quicked); | |
3315 | |
3316 __ push(atos); | |
3317 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) ); | |
3318 __ pop_ptr(rdx); | |
3319 __ jmpb(resolved); | |
3320 | |
3321 // Get superklass in EAX and subklass in EBX | |
3322 __ bind(quicked); | |
304 | 3323 __ mov(rdx, rax); // Save object in EDX; EAX needed for subtype check |
3324 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, sizeof(constantPoolOopDesc))); | |
0 | 3325 |
3326 __ bind(resolved); | |
304 | 3327 __ movptr(rbx, Address(rdx, oopDesc::klass_offset_in_bytes())); |
0 | 3328 |
3329 // Generate subtype check. Blows ECX. Resets EDI. Object in EDX. | |
3330 // Superklass in EAX. Subklass in EBX. | |
3331 __ gen_subtype_check( rbx, ok_is_subtype ); | |
3332 | |
3333 // Come here on failure | |
304 | 3334 __ push(rdx); |
0 | 3335 // object is at TOS |
3336 __ jump(ExternalAddress(Interpreter::_throw_ClassCastException_entry)); | |
3337 | |
3338 // Come here on success | |
3339 __ bind(ok_is_subtype); | |
304 | 3340 __ mov(rax,rdx); // Restore object in EDX |
0 | 3341 |
3342 // Collect counts on whether this check-cast sees NULLs a lot or not. | |
3343 if (ProfileInterpreter) { | |
3344 __ jmp(done); | |
3345 __ bind(is_null); | |
3346 __ profile_null_seen(rcx); | |
3347 } else { | |
3348 __ bind(is_null); // same as 'done' | |
3349 } | |
3350 __ bind(done); | |
3351 } | |
3352 | |
3353 | |
3354 void TemplateTable::instanceof() { | |
3355 transition(atos, itos); | |
3356 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3357 __ testptr(rax, rax); |
0 | 3358 __ jcc(Assembler::zero, is_null); |
3359 | |
3360 // Get cpool & tags index | |
3361 __ get_cpool_and_tags(rcx, rdx); // ECX=cpool, EDX=tags array | |
3362 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // EBX=index | |
3363 // See if bytecode has already been quicked | |
3364 __ cmpb(Address(rdx, rbx, Address::times_1, typeArrayOopDesc::header_size(T_BYTE) * wordSize), JVM_CONSTANT_Class); | |
3365 __ jcc(Assembler::equal, quicked); | |
3366 | |
3367 __ push(atos); | |
3368 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) ); | |
3369 __ pop_ptr(rdx); | |
304 | 3370 __ movptr(rdx, Address(rdx, oopDesc::klass_offset_in_bytes())); |
0 | 3371 __ jmp(resolved); |
3372 | |
3373 // Get superklass in EAX and subklass in EDX | |
3374 __ bind(quicked); | |
304 | 3375 __ movptr(rdx, Address(rax, oopDesc::klass_offset_in_bytes())); |
3376 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, sizeof(constantPoolOopDesc))); | |
0 | 3377 |
3378 __ bind(resolved); | |
3379 | |
3380 // Generate subtype check. Blows ECX. Resets EDI. | |
3381 // Superklass in EAX. Subklass in EDX. | |
3382 __ gen_subtype_check( rdx, ok_is_subtype ); | |
3383 | |
3384 // Come here on failure | |
3385 __ xorl(rax,rax); | |
3386 __ jmpb(done); | |
3387 // Come here on success | |
3388 __ bind(ok_is_subtype); | |
3389 __ movl(rax, 1); | |
3390 | |
3391 // Collect counts on whether this test sees NULLs a lot or not. | |
3392 if (ProfileInterpreter) { | |
3393 __ jmp(done); | |
3394 __ bind(is_null); | |
3395 __ profile_null_seen(rcx); | |
3396 } else { | |
3397 __ bind(is_null); // same as 'done' | |
3398 } | |
3399 __ bind(done); | |
3400 // rax, = 0: obj == NULL or obj is not an instanceof the specified klass | |
3401 // rax, = 1: obj != NULL and obj is an instanceof the specified klass | |
3402 } | |
3403 | |
3404 | |
3405 //---------------------------------------------------------------------------------------------------- | |
3406 // Breakpoints | |
3407 void TemplateTable::_breakpoint() { | |
3408 | |
3409 // Note: We get here even if we are single stepping.. | |
3410 // jbug inists on setting breakpoints at every bytecode | |
3411 // even if we are in single step mode. | |
3412 | |
3413 transition(vtos, vtos); | |
3414 | |
3415 // get the unpatched byte code | |
3416 __ get_method(rcx); | |
3417 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::get_original_bytecode_at), rcx, rsi); | |
304 | 3418 __ mov(rbx, rax); |
0 | 3419 |
3420 // post the breakpoint event | |
3421 __ get_method(rcx); | |
3422 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint), rcx, rsi); | |
3423 | |
3424 // complete the execution of original bytecode | |
3425 __ dispatch_only_normal(vtos); | |
3426 } | |
3427 | |
3428 | |
3429 //---------------------------------------------------------------------------------------------------- | |
3430 // Exceptions | |
3431 | |
3432 void TemplateTable::athrow() { | |
3433 transition(atos, vtos); | |
3434 __ null_check(rax); | |
3435 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
3436 } | |
3437 | |
3438 | |
3439 //---------------------------------------------------------------------------------------------------- | |
3440 // Synchronization | |
3441 // | |
3442 // Note: monitorenter & exit are symmetric routines; which is reflected | |
3443 // in the assembly code structure as well | |
3444 // | |
3445 // Stack layout: | |
3446 // | |
3447 // [expressions ] <--- rsp = expression stack top | |
3448 // .. | |
3449 // [expressions ] | |
3450 // [monitor entry] <--- monitor block top = expression stack bot | |
3451 // .. | |
3452 // [monitor entry] | |
3453 // [frame data ] <--- monitor block bot | |
3454 // ... | |
3455 // [saved rbp, ] <--- rbp, | |
3456 | |
3457 | |
3458 void TemplateTable::monitorenter() { | |
3459 transition(atos, vtos); | |
3460 | |
3461 // check for NULL object | |
3462 __ null_check(rax); | |
3463 | |
3464 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3465 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3466 const int entry_size = ( frame::interpreter_frame_monitor_size() * wordSize); | |
3467 Label allocated; | |
3468 | |
3469 // initialize entry pointer | |
3470 __ xorl(rdx, rdx); // points to free slot or NULL | |
3471 | |
3472 // find a free slot in the monitor block (result in rdx) | |
3473 { Label entry, loop, exit; | |
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3474 __ movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry |
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3475 |
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3476 __ lea(rbx, monitor_block_bot); // points to word before bottom of monitor block |
0 | 3477 __ jmpb(entry); |
3478 | |
3479 __ bind(loop); | |
304 | 3480 __ cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used |
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3481 __ cmovptr(Assembler::equal, rdx, rcx); // if not used then remember entry in rdx |
304 | 3482 __ cmpptr(rax, Address(rcx, BasicObjectLock::obj_offset_in_bytes())); // check if current entry is for same object |
3483 __ jccb(Assembler::equal, exit); // if same object then stop searching | |
3484 __ addptr(rcx, entry_size); // otherwise advance to next entry | |
0 | 3485 __ bind(entry); |
304 | 3486 __ cmpptr(rcx, rbx); // check if bottom reached |
0 | 3487 __ jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
3488 __ bind(exit); | |
3489 } | |
3490 | |
304 | 3491 __ testptr(rdx, rdx); // check if a slot has been found |
3492 __ jccb(Assembler::notZero, allocated); // if found, continue with that one | |
0 | 3493 |
3494 // allocate one if there's no free slot | |
3495 { Label entry, loop; | |
3496 // 1. compute new pointers // rsp: old expression stack top | |
304 | 3497 __ movptr(rdx, monitor_block_bot); // rdx: old expression stack bottom |
3498 __ subptr(rsp, entry_size); // move expression stack top | |
3499 __ subptr(rdx, entry_size); // move expression stack bottom | |
3500 __ mov(rcx, rsp); // set start value for copy loop | |
3501 __ movptr(monitor_block_bot, rdx); // set new monitor block top | |
0 | 3502 __ jmp(entry); |
3503 // 2. move expression stack contents | |
3504 __ bind(loop); | |
304 | 3505 __ movptr(rbx, Address(rcx, entry_size)); // load expression stack word from old location |
3506 __ movptr(Address(rcx, 0), rbx); // and store it at new location | |
3507 __ addptr(rcx, wordSize); // advance to next word | |
0 | 3508 __ bind(entry); |
304 | 3509 __ cmpptr(rcx, rdx); // check if bottom reached |
0 | 3510 __ jcc(Assembler::notEqual, loop); // if not at bottom then copy next word |
3511 } | |
3512 | |
3513 // call run-time routine | |
3514 // rdx: points to monitor entry | |
3515 __ bind(allocated); | |
3516 | |
3517 // Increment bcp to point to the next bytecode, so exception handling for async. exceptions work correctly. | |
3518 // The object has already been poped from the stack, so the expression stack looks correct. | |
3519 __ increment(rsi); | |
3520 | |
304 | 3521 __ movptr(Address(rdx, BasicObjectLock::obj_offset_in_bytes()), rax); // store object |
0 | 3522 __ lock_object(rdx); |
3523 | |
3524 // check to make sure this monitor doesn't cause stack overflow after locking | |
3525 __ save_bcp(); // in case of exception | |
3526 __ generate_stack_overflow_check(0); | |
3527 | |
3528 // The bcp has already been incremented. Just need to dispatch to next instruction. | |
3529 __ dispatch_next(vtos); | |
3530 } | |
3531 | |
3532 | |
3533 void TemplateTable::monitorexit() { | |
3534 transition(atos, vtos); | |
3535 | |
3536 // check for NULL object | |
3537 __ null_check(rax); | |
3538 | |
3539 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3540 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3541 const int entry_size = ( frame::interpreter_frame_monitor_size() * wordSize); | |
3542 Label found; | |
3543 | |
3544 // find matching slot | |
3545 { Label entry, loop; | |
304 | 3546 __ movptr(rdx, monitor_block_top); // points to current entry, starting with top-most entry |
3547 __ lea(rbx, monitor_block_bot); // points to word before bottom of monitor block | |
0 | 3548 __ jmpb(entry); |
3549 | |
3550 __ bind(loop); | |
304 | 3551 __ cmpptr(rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); // check if current entry is for same object |
0 | 3552 __ jcc(Assembler::equal, found); // if same object then stop searching |
304 | 3553 __ addptr(rdx, entry_size); // otherwise advance to next entry |
0 | 3554 __ bind(entry); |
304 | 3555 __ cmpptr(rdx, rbx); // check if bottom reached |
0 | 3556 __ jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
3557 } | |
3558 | |
3559 // error handling. Unlocking was not block-structured | |
3560 Label end; | |
3561 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
3562 __ should_not_reach_here(); | |
3563 | |
3564 // call run-time routine | |
3565 // rcx: points to monitor entry | |
3566 __ bind(found); | |
3567 __ push_ptr(rax); // make sure object is on stack (contract with oopMaps) | |
3568 __ unlock_object(rdx); | |
3569 __ pop_ptr(rax); // discard object | |
3570 __ bind(end); | |
3571 } | |
3572 | |
3573 | |
3574 //---------------------------------------------------------------------------------------------------- | |
3575 // Wide instructions | |
3576 | |
3577 void TemplateTable::wide() { | |
3578 transition(vtos, vtos); | |
3579 __ load_unsigned_byte(rbx, at_bcp(1)); | |
304 | 3580 ExternalAddress wtable((address)Interpreter::_wentry_point); |
3581 __ jump(ArrayAddress(wtable, Address(noreg, rbx, Address::times_ptr))); | |
0 | 3582 // Note: the rsi increment step is part of the individual wide bytecode implementations |
3583 } | |
3584 | |
3585 | |
3586 //---------------------------------------------------------------------------------------------------- | |
3587 // Multi arrays | |
3588 | |
3589 void TemplateTable::multianewarray() { | |
3590 transition(vtos, atos); | |
3591 __ load_unsigned_byte(rax, at_bcp(3)); // get number of dimensions | |
3592 // last dim is on top of stack; we want address of first one: | |
3593 // first_addr = last_addr + (ndims - 1) * stackElementSize - 1*wordsize | |
3594 // the latter wordSize to point to the beginning of the array. | |
304 | 3595 __ lea( rax, Address(rsp, rax, Interpreter::stackElementScale(), -wordSize)); |
0 | 3596 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), rax); // pass in rax, |
3597 __ load_unsigned_byte(rbx, at_bcp(3)); | |
304 | 3598 __ lea(rsp, Address(rsp, rbx, Interpreter::stackElementScale())); // get rid of counts |
0 | 3599 } |
3600 | |
3601 #endif /* !CC_INTERP */ |