Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateTable_x86_32.cpp @ 2119:d4fca0a6abde
7011386: race in objArrayKlass::array_klass_impl
Summary: Move _lower_dimension field initialization before _higher_dimension and add storestore barrier.
Reviewed-by: dholmes, iveresov, never
author | kvn |
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date | Tue, 11 Jan 2011 20:26:13 -0800 |
parents | dd031b2226de |
children | bb8e3b66bde6 |
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" |
26 #include "interpreter/interpreter.hpp" | |
27 #include "interpreter/interpreterRuntime.hpp" | |
28 #include "interpreter/templateTable.hpp" | |
29 #include "memory/universe.inline.hpp" | |
30 #include "oops/methodDataOop.hpp" | |
31 #include "oops/objArrayKlass.hpp" | |
32 #include "oops/oop.inline.hpp" | |
33 #include "prims/methodHandles.hpp" | |
34 #include "runtime/sharedRuntime.hpp" | |
35 #include "runtime/stubRoutines.hpp" | |
36 #include "runtime/synchronizer.hpp" | |
0 | 37 |
38 #ifndef CC_INTERP | |
39 #define __ _masm-> | |
40 | |
41 //---------------------------------------------------------------------------------------------------- | |
42 // Platform-dependent initialization | |
43 | |
44 void TemplateTable::pd_initialize() { | |
45 // No i486 specific initialization | |
46 } | |
47 | |
48 //---------------------------------------------------------------------------------------------------- | |
49 // Address computation | |
50 | |
51 // local variables | |
52 static inline Address iaddress(int n) { | |
53 return Address(rdi, Interpreter::local_offset_in_bytes(n)); | |
54 } | |
55 | |
56 static inline Address laddress(int n) { return iaddress(n + 1); } | |
57 static inline Address haddress(int n) { return iaddress(n + 0); } | |
58 static inline Address faddress(int n) { return iaddress(n); } | |
59 static inline Address daddress(int n) { return laddress(n); } | |
60 static inline Address aaddress(int n) { return iaddress(n); } | |
61 | |
62 static inline Address iaddress(Register r) { | |
1506 | 63 return Address(rdi, r, Interpreter::stackElementScale()); |
0 | 64 } |
65 static inline Address laddress(Register r) { | |
66 return Address(rdi, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(1)); | |
67 } | |
68 static inline Address haddress(Register r) { | |
69 return Address(rdi, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(0)); | |
70 } | |
71 | |
1506 | 72 static inline Address faddress(Register r) { return iaddress(r); } |
73 static inline Address daddress(Register r) { return laddress(r); } | |
74 static inline Address aaddress(Register r) { return iaddress(r); } | |
0 | 75 |
76 // expression stack | |
77 // (Note: Must not use symmetric equivalents at_rsp_m1/2 since they store | |
78 // data beyond the rsp which is potentially unsafe in an MT environment; | |
79 // an interrupt may overwrite that data.) | |
80 static inline Address at_rsp () { | |
81 return Address(rsp, 0); | |
82 } | |
83 | |
84 // At top of Java expression stack which may be different than rsp(). It | |
85 // isn't for category 1 objects. | |
86 static inline Address at_tos () { | |
87 Address tos = Address(rsp, Interpreter::expr_offset_in_bytes(0)); | |
88 return tos; | |
89 } | |
90 | |
91 static inline Address at_tos_p1() { | |
92 return Address(rsp, Interpreter::expr_offset_in_bytes(1)); | |
93 } | |
94 | |
95 static inline Address at_tos_p2() { | |
96 return Address(rsp, Interpreter::expr_offset_in_bytes(2)); | |
97 } | |
98 | |
99 // Condition conversion | |
100 static Assembler::Condition j_not(TemplateTable::Condition cc) { | |
101 switch (cc) { | |
102 case TemplateTable::equal : return Assembler::notEqual; | |
103 case TemplateTable::not_equal : return Assembler::equal; | |
104 case TemplateTable::less : return Assembler::greaterEqual; | |
105 case TemplateTable::less_equal : return Assembler::greater; | |
106 case TemplateTable::greater : return Assembler::lessEqual; | |
107 case TemplateTable::greater_equal: return Assembler::less; | |
108 } | |
109 ShouldNotReachHere(); | |
110 return Assembler::zero; | |
111 } | |
112 | |
113 | |
114 //---------------------------------------------------------------------------------------------------- | |
115 // Miscelaneous helper routines | |
116 | |
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117 // Store an oop (or NULL) at the address described by obj. |
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118 // If val == noreg this means store a NULL |
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119 |
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120 static void do_oop_store(InterpreterMacroAssembler* _masm, |
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121 Address obj, |
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122 Register val, |
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123 BarrierSet::Name barrier, |
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124 bool precise) { |
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125 assert(val == noreg || val == rax, "parameter is just for looks"); |
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126 switch (barrier) { |
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127 #ifndef SERIALGC |
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128 case BarrierSet::G1SATBCT: |
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129 case BarrierSet::G1SATBCTLogging: |
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130 { |
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131 // flatten object address if needed |
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132 // We do it regardless of precise because we need the registers |
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133 if (obj.index() == noreg && obj.disp() == 0) { |
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134 if (obj.base() != rdx) { |
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135 __ movl(rdx, obj.base()); |
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136 } |
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137 } else { |
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138 __ leal(rdx, obj); |
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139 } |
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140 __ get_thread(rcx); |
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141 __ save_bcp(); |
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142 __ g1_write_barrier_pre(rdx, rcx, rsi, rbx, val != noreg); |
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143 |
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144 // Do the actual store |
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145 // noreg means NULL |
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146 if (val == noreg) { |
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147 __ movptr(Address(rdx, 0), NULL_WORD); |
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148 // No post barrier for NULL |
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149 } else { |
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150 __ movl(Address(rdx, 0), val); |
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151 __ g1_write_barrier_post(rdx, rax, rcx, rbx, rsi); |
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152 } |
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153 __ restore_bcp(); |
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154 |
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155 } |
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156 break; |
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157 #endif // SERIALGC |
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158 case BarrierSet::CardTableModRef: |
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159 case BarrierSet::CardTableExtension: |
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160 { |
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161 if (val == noreg) { |
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162 __ movptr(obj, NULL_WORD); |
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163 } else { |
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164 __ movl(obj, val); |
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165 // flatten object address if needed |
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166 if (!precise || (obj.index() == noreg && obj.disp() == 0)) { |
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167 __ store_check(obj.base()); |
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168 } else { |
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169 __ leal(rdx, obj); |
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170 __ store_check(rdx); |
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171 } |
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172 } |
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173 } |
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174 break; |
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175 case BarrierSet::ModRef: |
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176 case BarrierSet::Other: |
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177 if (val == noreg) { |
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178 __ movptr(obj, NULL_WORD); |
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179 } else { |
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180 __ movl(obj, val); |
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181 } |
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182 break; |
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183 default : |
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184 ShouldNotReachHere(); |
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185 |
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186 } |
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187 } |
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188 |
0 | 189 Address TemplateTable::at_bcp(int offset) { |
190 assert(_desc->uses_bcp(), "inconsistent uses_bcp information"); | |
191 return Address(rsi, offset); | |
192 } | |
193 | |
194 | |
195 void TemplateTable::patch_bytecode(Bytecodes::Code bytecode, Register bc, | |
196 Register scratch, | |
197 bool load_bc_into_scratch/*=true*/) { | |
198 | |
199 if (!RewriteBytecodes) return; | |
200 // the pair bytecodes have already done the load. | |
304 | 201 if (load_bc_into_scratch) { |
202 __ movl(bc, bytecode); | |
203 } | |
0 | 204 Label patch_done; |
205 if (JvmtiExport::can_post_breakpoint()) { | |
206 Label fast_patch; | |
207 // if a breakpoint is present we can't rewrite the stream directly | |
304 | 208 __ movzbl(scratch, at_bcp(0)); |
0 | 209 __ cmpl(scratch, Bytecodes::_breakpoint); |
210 __ jcc(Assembler::notEqual, fast_patch); | |
211 __ get_method(scratch); | |
212 // Let breakpoint table handling rewrite to quicker bytecode | |
213 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), scratch, rsi, bc); | |
214 #ifndef ASSERT | |
215 __ jmpb(patch_done); | |
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216 #else |
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217 __ jmp(patch_done); |
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218 #endif |
0 | 219 __ bind(fast_patch); |
220 } | |
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221 #ifdef ASSERT |
0 | 222 Label okay; |
223 __ load_unsigned_byte(scratch, at_bcp(0)); | |
224 __ cmpl(scratch, (int)Bytecodes::java_code(bytecode)); | |
225 __ jccb(Assembler::equal, okay); | |
226 __ cmpl(scratch, bc); | |
227 __ jcc(Assembler::equal, okay); | |
228 __ stop("patching the wrong bytecode"); | |
229 __ bind(okay); | |
230 #endif | |
231 // patch bytecode | |
232 __ movb(at_bcp(0), bc); | |
233 __ bind(patch_done); | |
234 } | |
235 | |
236 //---------------------------------------------------------------------------------------------------- | |
237 // Individual instructions | |
238 | |
239 void TemplateTable::nop() { | |
240 transition(vtos, vtos); | |
241 // nothing to do | |
242 } | |
243 | |
244 void TemplateTable::shouldnotreachhere() { | |
245 transition(vtos, vtos); | |
246 __ stop("shouldnotreachhere bytecode"); | |
247 } | |
248 | |
249 | |
250 | |
251 void TemplateTable::aconst_null() { | |
252 transition(vtos, atos); | |
304 | 253 __ xorptr(rax, rax); |
0 | 254 } |
255 | |
256 | |
257 void TemplateTable::iconst(int value) { | |
258 transition(vtos, itos); | |
259 if (value == 0) { | |
304 | 260 __ xorptr(rax, rax); |
0 | 261 } else { |
304 | 262 __ movptr(rax, value); |
0 | 263 } |
264 } | |
265 | |
266 | |
267 void TemplateTable::lconst(int value) { | |
268 transition(vtos, ltos); | |
269 if (value == 0) { | |
304 | 270 __ xorptr(rax, rax); |
0 | 271 } else { |
304 | 272 __ movptr(rax, value); |
0 | 273 } |
274 assert(value >= 0, "check this code"); | |
304 | 275 __ xorptr(rdx, rdx); |
0 | 276 } |
277 | |
278 | |
279 void TemplateTable::fconst(int value) { | |
280 transition(vtos, ftos); | |
281 if (value == 0) { __ fldz(); | |
282 } else if (value == 1) { __ fld1(); | |
283 } else if (value == 2) { __ fld1(); __ fld1(); __ faddp(); // should do a better solution here | |
284 } else { ShouldNotReachHere(); | |
285 } | |
286 } | |
287 | |
288 | |
289 void TemplateTable::dconst(int value) { | |
290 transition(vtos, dtos); | |
291 if (value == 0) { __ fldz(); | |
292 } else if (value == 1) { __ fld1(); | |
293 } else { ShouldNotReachHere(); | |
294 } | |
295 } | |
296 | |
297 | |
298 void TemplateTable::bipush() { | |
299 transition(vtos, itos); | |
300 __ load_signed_byte(rax, at_bcp(1)); | |
301 } | |
302 | |
303 | |
304 void TemplateTable::sipush() { | |
305 transition(vtos, itos); | |
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306 __ load_unsigned_short(rax, at_bcp(1)); |
304 | 307 __ bswapl(rax); |
0 | 308 __ sarl(rax, 16); |
309 } | |
310 | |
311 void TemplateTable::ldc(bool wide) { | |
312 transition(vtos, vtos); | |
313 Label call_ldc, notFloat, notClass, Done; | |
314 | |
315 if (wide) { | |
316 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
317 } else { | |
318 __ load_unsigned_byte(rbx, at_bcp(1)); | |
319 } | |
320 __ get_cpool_and_tags(rcx, rax); | |
321 const int base_offset = constantPoolOopDesc::header_size() * wordSize; | |
322 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
323 | |
324 // get type | |
304 | 325 __ xorptr(rdx, rdx); |
0 | 326 __ movb(rdx, Address(rax, rbx, Address::times_1, tags_offset)); |
327 | |
328 // unresolved string - get the resolved string | |
329 __ cmpl(rdx, JVM_CONSTANT_UnresolvedString); | |
330 __ jccb(Assembler::equal, call_ldc); | |
331 | |
332 // unresolved class - get the resolved class | |
333 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClass); | |
334 __ jccb(Assembler::equal, call_ldc); | |
335 | |
336 // unresolved class in error (resolution failed) - call into runtime | |
337 // so that the same error from first resolution attempt is thrown. | |
338 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClassInError); | |
339 __ jccb(Assembler::equal, call_ldc); | |
340 | |
341 // resolved class - need to call vm to get java mirror of the class | |
342 __ cmpl(rdx, JVM_CONSTANT_Class); | |
343 __ jcc(Assembler::notEqual, notClass); | |
344 | |
345 __ bind(call_ldc); | |
346 __ movl(rcx, wide); | |
347 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), rcx); | |
348 __ push(atos); | |
349 __ jmp(Done); | |
350 | |
351 __ bind(notClass); | |
352 __ cmpl(rdx, JVM_CONSTANT_Float); | |
353 __ jccb(Assembler::notEqual, notFloat); | |
354 // ftos | |
304 | 355 __ fld_s( Address(rcx, rbx, Address::times_ptr, base_offset)); |
0 | 356 __ push(ftos); |
357 __ jmp(Done); | |
358 | |
359 __ bind(notFloat); | |
360 #ifdef ASSERT | |
361 { Label L; | |
362 __ cmpl(rdx, JVM_CONSTANT_Integer); | |
363 __ jcc(Assembler::equal, L); | |
364 __ cmpl(rdx, JVM_CONSTANT_String); | |
365 __ jcc(Assembler::equal, L); | |
366 __ stop("unexpected tag type in ldc"); | |
367 __ bind(L); | |
368 } | |
369 #endif | |
370 Label isOop; | |
371 // atos and itos | |
372 // String is only oop type we will see here | |
373 __ cmpl(rdx, JVM_CONSTANT_String); | |
374 __ jccb(Assembler::equal, isOop); | |
304 | 375 __ movl(rax, Address(rcx, rbx, Address::times_ptr, base_offset)); |
0 | 376 __ push(itos); |
377 __ jmp(Done); | |
378 __ bind(isOop); | |
304 | 379 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, base_offset)); |
0 | 380 __ push(atos); |
381 | |
382 if (VerifyOops) { | |
383 __ verify_oop(rax); | |
384 } | |
385 __ bind(Done); | |
386 } | |
387 | |
1602 | 388 // Fast path for caching oop constants. |
389 // %%% We should use this to handle Class and String constants also. | |
390 // %%% It will simplify the ldc/primitive path considerably. | |
391 void TemplateTable::fast_aldc(bool wide) { | |
392 transition(vtos, atos); | |
393 | |
394 if (!EnableMethodHandles) { | |
395 // We should not encounter this bytecode if !EnableMethodHandles. | |
396 // The verifier will stop it. However, if we get past the verifier, | |
397 // this will stop the thread in a reasonable way, without crashing the JVM. | |
398 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
399 InterpreterRuntime::throw_IncompatibleClassChangeError)); | |
400 // the call_VM checks for exception, so we should never return here. | |
401 __ should_not_reach_here(); | |
402 return; | |
403 } | |
404 | |
405 const Register cache = rcx; | |
406 const Register index = rdx; | |
407 | |
408 resolve_cache_and_index(f1_oop, rax, cache, index, wide ? sizeof(u2) : sizeof(u1)); | |
409 if (VerifyOops) { | |
410 __ verify_oop(rax); | |
411 } | |
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412 |
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413 Label L_done, L_throw_exception; |
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414 const Register con_klass_temp = rcx; // same as Rcache |
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415 __ movptr(con_klass_temp, Address(rax, oopDesc::klass_offset_in_bytes())); |
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416 __ cmpptr(con_klass_temp, ExternalAddress((address)Universe::systemObjArrayKlassObj_addr())); |
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417 __ jcc(Assembler::notEqual, L_done); |
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418 __ cmpl(Address(rax, arrayOopDesc::length_offset_in_bytes()), 0); |
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419 __ jcc(Assembler::notEqual, L_throw_exception); |
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420 __ xorptr(rax, rax); |
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421 __ jmp(L_done); |
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422 |
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423 // Load the exception from the system-array which wraps it: |
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424 __ bind(L_throw_exception); |
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425 __ movptr(rax, Address(rax, arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
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426 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); |
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427 |
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428 __ bind(L_done); |
1602 | 429 } |
430 | |
0 | 431 void TemplateTable::ldc2_w() { |
432 transition(vtos, vtos); | |
433 Label Long, Done; | |
434 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
435 | |
436 __ get_cpool_and_tags(rcx, rax); | |
437 const int base_offset = constantPoolOopDesc::header_size() * wordSize; | |
438 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
439 | |
440 // get type | |
441 __ cmpb(Address(rax, rbx, Address::times_1, tags_offset), JVM_CONSTANT_Double); | |
442 __ jccb(Assembler::notEqual, Long); | |
443 // dtos | |
304 | 444 __ fld_d( Address(rcx, rbx, Address::times_ptr, base_offset)); |
0 | 445 __ push(dtos); |
446 __ jmpb(Done); | |
447 | |
448 __ bind(Long); | |
449 // ltos | |
304 | 450 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, base_offset + 0 * wordSize)); |
451 NOT_LP64(__ movptr(rdx, Address(rcx, rbx, Address::times_ptr, base_offset + 1 * wordSize))); | |
0 | 452 |
453 __ push(ltos); | |
454 | |
455 __ bind(Done); | |
456 } | |
457 | |
458 | |
459 void TemplateTable::locals_index(Register reg, int offset) { | |
460 __ load_unsigned_byte(reg, at_bcp(offset)); | |
304 | 461 __ negptr(reg); |
0 | 462 } |
463 | |
464 | |
465 void TemplateTable::iload() { | |
466 transition(vtos, itos); | |
467 if (RewriteFrequentPairs) { | |
468 Label rewrite, done; | |
469 | |
470 // get next byte | |
471 __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_iload))); | |
472 // if _iload, wait to rewrite to iload2. We only want to rewrite the | |
473 // last two iloads in a pair. Comparing against fast_iload means that | |
474 // the next bytecode is neither an iload or a caload, and therefore | |
475 // an iload pair. | |
476 __ cmpl(rbx, Bytecodes::_iload); | |
477 __ jcc(Assembler::equal, done); | |
478 | |
479 __ cmpl(rbx, Bytecodes::_fast_iload); | |
480 __ movl(rcx, Bytecodes::_fast_iload2); | |
481 __ jccb(Assembler::equal, rewrite); | |
482 | |
483 // if _caload, rewrite to fast_icaload | |
484 __ cmpl(rbx, Bytecodes::_caload); | |
485 __ movl(rcx, Bytecodes::_fast_icaload); | |
486 __ jccb(Assembler::equal, rewrite); | |
487 | |
488 // rewrite so iload doesn't check again. | |
489 __ movl(rcx, Bytecodes::_fast_iload); | |
490 | |
491 // rewrite | |
492 // rcx: fast bytecode | |
493 __ bind(rewrite); | |
494 patch_bytecode(Bytecodes::_iload, rcx, rbx, false); | |
495 __ bind(done); | |
496 } | |
497 | |
498 // Get the local value into tos | |
499 locals_index(rbx); | |
500 __ movl(rax, iaddress(rbx)); | |
501 } | |
502 | |
503 | |
504 void TemplateTable::fast_iload2() { | |
505 transition(vtos, itos); | |
506 locals_index(rbx); | |
507 __ movl(rax, iaddress(rbx)); | |
508 __ push(itos); | |
509 locals_index(rbx, 3); | |
510 __ movl(rax, iaddress(rbx)); | |
511 } | |
512 | |
513 void TemplateTable::fast_iload() { | |
514 transition(vtos, itos); | |
515 locals_index(rbx); | |
516 __ movl(rax, iaddress(rbx)); | |
517 } | |
518 | |
519 | |
520 void TemplateTable::lload() { | |
521 transition(vtos, ltos); | |
522 locals_index(rbx); | |
304 | 523 __ movptr(rax, laddress(rbx)); |
524 NOT_LP64(__ movl(rdx, haddress(rbx))); | |
0 | 525 } |
526 | |
527 | |
528 void TemplateTable::fload() { | |
529 transition(vtos, ftos); | |
530 locals_index(rbx); | |
531 __ fld_s(faddress(rbx)); | |
532 } | |
533 | |
534 | |
535 void TemplateTable::dload() { | |
536 transition(vtos, dtos); | |
537 locals_index(rbx); | |
1506 | 538 __ fld_d(daddress(rbx)); |
0 | 539 } |
540 | |
541 | |
542 void TemplateTable::aload() { | |
543 transition(vtos, atos); | |
544 locals_index(rbx); | |
304 | 545 __ movptr(rax, aaddress(rbx)); |
0 | 546 } |
547 | |
548 | |
549 void TemplateTable::locals_index_wide(Register reg) { | |
550 __ movl(reg, at_bcp(2)); | |
304 | 551 __ bswapl(reg); |
0 | 552 __ shrl(reg, 16); |
304 | 553 __ negptr(reg); |
0 | 554 } |
555 | |
556 | |
557 void TemplateTable::wide_iload() { | |
558 transition(vtos, itos); | |
559 locals_index_wide(rbx); | |
560 __ movl(rax, iaddress(rbx)); | |
561 } | |
562 | |
563 | |
564 void TemplateTable::wide_lload() { | |
565 transition(vtos, ltos); | |
566 locals_index_wide(rbx); | |
304 | 567 __ movptr(rax, laddress(rbx)); |
568 NOT_LP64(__ movl(rdx, haddress(rbx))); | |
0 | 569 } |
570 | |
571 | |
572 void TemplateTable::wide_fload() { | |
573 transition(vtos, ftos); | |
574 locals_index_wide(rbx); | |
575 __ fld_s(faddress(rbx)); | |
576 } | |
577 | |
578 | |
579 void TemplateTable::wide_dload() { | |
580 transition(vtos, dtos); | |
581 locals_index_wide(rbx); | |
1506 | 582 __ fld_d(daddress(rbx)); |
0 | 583 } |
584 | |
585 | |
586 void TemplateTable::wide_aload() { | |
587 transition(vtos, atos); | |
588 locals_index_wide(rbx); | |
304 | 589 __ movptr(rax, aaddress(rbx)); |
0 | 590 } |
591 | |
592 void TemplateTable::index_check(Register array, Register index) { | |
593 // Pop ptr into array | |
594 __ pop_ptr(array); | |
595 index_check_without_pop(array, index); | |
596 } | |
597 | |
598 void TemplateTable::index_check_without_pop(Register array, Register index) { | |
599 // destroys rbx, | |
600 // check array | |
601 __ null_check(array, arrayOopDesc::length_offset_in_bytes()); | |
304 | 602 LP64_ONLY(__ movslq(index, index)); |
0 | 603 // check index |
604 __ cmpl(index, Address(array, arrayOopDesc::length_offset_in_bytes())); | |
605 if (index != rbx) { | |
606 // ??? convention: move aberrant index into rbx, for exception message | |
607 assert(rbx != array, "different registers"); | |
304 | 608 __ mov(rbx, index); |
0 | 609 } |
610 __ jump_cc(Assembler::aboveEqual, | |
611 ExternalAddress(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry)); | |
612 } | |
613 | |
614 | |
615 void TemplateTable::iaload() { | |
616 transition(itos, itos); | |
617 // rdx: array | |
618 index_check(rdx, rax); // kills rbx, | |
619 // rax,: index | |
620 __ movl(rax, Address(rdx, rax, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_INT))); | |
621 } | |
622 | |
623 | |
624 void TemplateTable::laload() { | |
625 transition(itos, ltos); | |
626 // rax,: index | |
627 // rdx: array | |
628 index_check(rdx, rax); | |
304 | 629 __ mov(rbx, rax); |
0 | 630 // rbx,: index |
304 | 631 __ movptr(rax, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize)); |
632 NOT_LP64(__ movl(rdx, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize))); | |
0 | 633 } |
634 | |
635 | |
636 void TemplateTable::faload() { | |
637 transition(itos, ftos); | |
638 // rdx: array | |
639 index_check(rdx, rax); // kills rbx, | |
640 // rax,: index | |
641 __ fld_s(Address(rdx, rax, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT))); | |
642 } | |
643 | |
644 | |
645 void TemplateTable::daload() { | |
646 transition(itos, dtos); | |
647 // rdx: array | |
648 index_check(rdx, rax); // kills rbx, | |
649 // rax,: index | |
650 __ fld_d(Address(rdx, rax, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); | |
651 } | |
652 | |
653 | |
654 void TemplateTable::aaload() { | |
655 transition(itos, atos); | |
656 // rdx: array | |
657 index_check(rdx, rax); // kills rbx, | |
658 // rax,: index | |
304 | 659 __ movptr(rax, Address(rdx, rax, Address::times_ptr, arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
0 | 660 } |
661 | |
662 | |
663 void TemplateTable::baload() { | |
664 transition(itos, itos); | |
665 // rdx: array | |
666 index_check(rdx, rax); // kills rbx, | |
667 // rax,: index | |
668 // can do better code for P5 - fix this at some point | |
669 __ load_signed_byte(rbx, Address(rdx, rax, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE))); | |
304 | 670 __ mov(rax, rbx); |
0 | 671 } |
672 | |
673 | |
674 void TemplateTable::caload() { | |
675 transition(itos, itos); | |
676 // rdx: array | |
677 index_check(rdx, rax); // kills rbx, | |
678 // rax,: index | |
679 // can do better code for P5 - may want to improve this at some point | |
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680 __ load_unsigned_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
304 | 681 __ mov(rax, rbx); |
0 | 682 } |
683 | |
684 // iload followed by caload frequent pair | |
685 void TemplateTable::fast_icaload() { | |
686 transition(vtos, itos); | |
687 // load index out of locals | |
688 locals_index(rbx); | |
689 __ movl(rax, iaddress(rbx)); | |
690 | |
691 // rdx: array | |
692 index_check(rdx, rax); | |
693 // rax,: index | |
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694 __ load_unsigned_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
304 | 695 __ mov(rax, rbx); |
0 | 696 } |
697 | |
698 void TemplateTable::saload() { | |
699 transition(itos, itos); | |
700 // rdx: array | |
701 index_check(rdx, rax); // kills rbx, | |
702 // rax,: index | |
703 // can do better code for P5 - may want to improve this at some point | |
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704 __ load_signed_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_SHORT))); |
304 | 705 __ mov(rax, rbx); |
0 | 706 } |
707 | |
708 | |
709 void TemplateTable::iload(int n) { | |
710 transition(vtos, itos); | |
711 __ movl(rax, iaddress(n)); | |
712 } | |
713 | |
714 | |
715 void TemplateTable::lload(int n) { | |
716 transition(vtos, ltos); | |
304 | 717 __ movptr(rax, laddress(n)); |
718 NOT_LP64(__ movptr(rdx, haddress(n))); | |
0 | 719 } |
720 | |
721 | |
722 void TemplateTable::fload(int n) { | |
723 transition(vtos, ftos); | |
724 __ fld_s(faddress(n)); | |
725 } | |
726 | |
727 | |
728 void TemplateTable::dload(int n) { | |
729 transition(vtos, dtos); | |
1506 | 730 __ fld_d(daddress(n)); |
0 | 731 } |
732 | |
733 | |
734 void TemplateTable::aload(int n) { | |
735 transition(vtos, atos); | |
304 | 736 __ movptr(rax, aaddress(n)); |
0 | 737 } |
738 | |
739 | |
740 void TemplateTable::aload_0() { | |
741 transition(vtos, atos); | |
742 // According to bytecode histograms, the pairs: | |
743 // | |
744 // _aload_0, _fast_igetfield | |
745 // _aload_0, _fast_agetfield | |
746 // _aload_0, _fast_fgetfield | |
747 // | |
748 // occur frequently. If RewriteFrequentPairs is set, the (slow) _aload_0 | |
749 // bytecode checks if the next bytecode is either _fast_igetfield, | |
750 // _fast_agetfield or _fast_fgetfield and then rewrites the | |
751 // current bytecode into a pair bytecode; otherwise it rewrites the current | |
752 // bytecode into _fast_aload_0 that doesn't do the pair check anymore. | |
753 // | |
754 // Note: If the next bytecode is _getfield, the rewrite must be delayed, | |
755 // otherwise we may miss an opportunity for a pair. | |
756 // | |
757 // Also rewrite frequent pairs | |
758 // aload_0, aload_1 | |
759 // aload_0, iload_1 | |
760 // These bytecodes with a small amount of code are most profitable to rewrite | |
761 if (RewriteFrequentPairs) { | |
762 Label rewrite, done; | |
763 // get next byte | |
764 __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_aload_0))); | |
765 | |
766 // do actual aload_0 | |
767 aload(0); | |
768 | |
769 // if _getfield then wait with rewrite | |
770 __ cmpl(rbx, Bytecodes::_getfield); | |
771 __ jcc(Assembler::equal, done); | |
772 | |
773 // if _igetfield then reqrite to _fast_iaccess_0 | |
774 assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
775 __ cmpl(rbx, Bytecodes::_fast_igetfield); | |
776 __ movl(rcx, Bytecodes::_fast_iaccess_0); | |
777 __ jccb(Assembler::equal, rewrite); | |
778 | |
779 // if _agetfield then reqrite to _fast_aaccess_0 | |
780 assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
781 __ cmpl(rbx, Bytecodes::_fast_agetfield); | |
782 __ movl(rcx, Bytecodes::_fast_aaccess_0); | |
783 __ jccb(Assembler::equal, rewrite); | |
784 | |
785 // if _fgetfield then reqrite to _fast_faccess_0 | |
786 assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
787 __ cmpl(rbx, Bytecodes::_fast_fgetfield); | |
788 __ movl(rcx, Bytecodes::_fast_faccess_0); | |
789 __ jccb(Assembler::equal, rewrite); | |
790 | |
791 // else rewrite to _fast_aload0 | |
792 assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
793 __ movl(rcx, Bytecodes::_fast_aload_0); | |
794 | |
795 // rewrite | |
796 // rcx: fast bytecode | |
797 __ bind(rewrite); | |
798 patch_bytecode(Bytecodes::_aload_0, rcx, rbx, false); | |
799 | |
800 __ bind(done); | |
801 } else { | |
802 aload(0); | |
803 } | |
804 } | |
805 | |
806 void TemplateTable::istore() { | |
807 transition(itos, vtos); | |
808 locals_index(rbx); | |
809 __ movl(iaddress(rbx), rax); | |
810 } | |
811 | |
812 | |
813 void TemplateTable::lstore() { | |
814 transition(ltos, vtos); | |
815 locals_index(rbx); | |
304 | 816 __ movptr(laddress(rbx), rax); |
817 NOT_LP64(__ movptr(haddress(rbx), rdx)); | |
0 | 818 } |
819 | |
820 | |
821 void TemplateTable::fstore() { | |
822 transition(ftos, vtos); | |
823 locals_index(rbx); | |
824 __ fstp_s(faddress(rbx)); | |
825 } | |
826 | |
827 | |
828 void TemplateTable::dstore() { | |
829 transition(dtos, vtos); | |
830 locals_index(rbx); | |
1506 | 831 __ fstp_d(daddress(rbx)); |
0 | 832 } |
833 | |
834 | |
835 void TemplateTable::astore() { | |
836 transition(vtos, vtos); | |
1506 | 837 __ pop_ptr(rax); |
0 | 838 locals_index(rbx); |
304 | 839 __ movptr(aaddress(rbx), rax); |
0 | 840 } |
841 | |
842 | |
843 void TemplateTable::wide_istore() { | |
844 transition(vtos, vtos); | |
845 __ pop_i(rax); | |
846 locals_index_wide(rbx); | |
847 __ movl(iaddress(rbx), rax); | |
848 } | |
849 | |
850 | |
851 void TemplateTable::wide_lstore() { | |
852 transition(vtos, vtos); | |
853 __ pop_l(rax, rdx); | |
854 locals_index_wide(rbx); | |
304 | 855 __ movptr(laddress(rbx), rax); |
856 NOT_LP64(__ movl(haddress(rbx), rdx)); | |
0 | 857 } |
858 | |
859 | |
860 void TemplateTable::wide_fstore() { | |
861 wide_istore(); | |
862 } | |
863 | |
864 | |
865 void TemplateTable::wide_dstore() { | |
866 wide_lstore(); | |
867 } | |
868 | |
869 | |
870 void TemplateTable::wide_astore() { | |
871 transition(vtos, vtos); | |
1506 | 872 __ pop_ptr(rax); |
0 | 873 locals_index_wide(rbx); |
304 | 874 __ movptr(aaddress(rbx), rax); |
0 | 875 } |
876 | |
877 | |
878 void TemplateTable::iastore() { | |
879 transition(itos, vtos); | |
880 __ pop_i(rbx); | |
881 // rax,: value | |
882 // rdx: array | |
883 index_check(rdx, rbx); // prefer index in rbx, | |
884 // rbx,: index | |
885 __ movl(Address(rdx, rbx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_INT)), rax); | |
886 } | |
887 | |
888 | |
889 void TemplateTable::lastore() { | |
890 transition(ltos, vtos); | |
891 __ pop_i(rbx); | |
892 // rax,: low(value) | |
893 // rcx: array | |
894 // rdx: high(value) | |
895 index_check(rcx, rbx); // prefer index in rbx, | |
896 // rbx,: index | |
304 | 897 __ movptr(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize), rax); |
898 NOT_LP64(__ movl(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize), rdx)); | |
0 | 899 } |
900 | |
901 | |
902 void TemplateTable::fastore() { | |
903 transition(ftos, vtos); | |
904 __ pop_i(rbx); | |
905 // rdx: array | |
906 // st0: value | |
907 index_check(rdx, rbx); // prefer index in rbx, | |
908 // rbx,: index | |
909 __ fstp_s(Address(rdx, rbx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT))); | |
910 } | |
911 | |
912 | |
913 void TemplateTable::dastore() { | |
914 transition(dtos, vtos); | |
915 __ pop_i(rbx); | |
916 // rdx: array | |
917 // st0: value | |
918 index_check(rdx, rbx); // prefer index in rbx, | |
919 // rbx,: index | |
920 __ fstp_d(Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); | |
921 } | |
922 | |
923 | |
924 void TemplateTable::aastore() { | |
925 Label is_null, ok_is_subtype, done; | |
926 transition(vtos, vtos); | |
927 // stack: ..., array, index, value | |
304 | 928 __ movptr(rax, at_tos()); // Value |
0 | 929 __ movl(rcx, at_tos_p1()); // Index |
304 | 930 __ movptr(rdx, at_tos_p2()); // Array |
342
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931 |
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932 Address element_address(rdx, rcx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_OBJECT)); |
0 | 933 index_check_without_pop(rdx, rcx); // kills rbx, |
934 // do array store check - check for NULL value first | |
304 | 935 __ testptr(rax, rax); |
0 | 936 __ jcc(Assembler::zero, is_null); |
937 | |
938 // Move subklass into EBX | |
304 | 939 __ movptr(rbx, Address(rax, oopDesc::klass_offset_in_bytes())); |
0 | 940 // Move superklass into EAX |
304 | 941 __ movptr(rax, Address(rdx, oopDesc::klass_offset_in_bytes())); |
942 __ movptr(rax, Address(rax, sizeof(oopDesc) + objArrayKlass::element_klass_offset_in_bytes())); | |
943 // Compress array+index*wordSize+12 into a single register. Frees ECX. | |
362 | 944 __ lea(rdx, element_address); |
0 | 945 |
946 // Generate subtype check. Blows ECX. Resets EDI to locals. | |
947 // Superklass in EAX. Subklass in EBX. | |
948 __ gen_subtype_check( rbx, ok_is_subtype ); | |
949 | |
950 // Come here on failure | |
951 // object is at TOS | |
952 __ jump(ExternalAddress(Interpreter::_throw_ArrayStoreException_entry)); | |
953 | |
954 // Come here on success | |
955 __ bind(ok_is_subtype); | |
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956 |
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957 // Get the value to store |
362 | 958 __ movptr(rax, at_rsp()); |
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959 // and store it with appropriate barrier |
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960 do_oop_store(_masm, Address(rdx, 0), rax, _bs->kind(), true); |
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961 |
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962 __ jmp(done); |
0 | 963 |
964 // Have a NULL in EAX, EDX=array, ECX=index. Store NULL at ary[idx] | |
965 __ bind(is_null); | |
966 __ profile_null_seen(rbx); | |
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967 |
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968 // Store NULL, (noreg means NULL to do_oop_store) |
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969 do_oop_store(_masm, element_address, noreg, _bs->kind(), true); |
0 | 970 |
971 // Pop stack arguments | |
972 __ bind(done); | |
1506 | 973 __ addptr(rsp, 3 * Interpreter::stackElementSize); |
0 | 974 } |
975 | |
976 | |
977 void TemplateTable::bastore() { | |
978 transition(itos, vtos); | |
979 __ pop_i(rbx); | |
980 // rax,: value | |
981 // rdx: array | |
982 index_check(rdx, rbx); // prefer index in rbx, | |
983 // rbx,: index | |
984 __ movb(Address(rdx, rbx, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE)), rax); | |
985 } | |
986 | |
987 | |
988 void TemplateTable::castore() { | |
989 transition(itos, vtos); | |
990 __ pop_i(rbx); | |
991 // rax,: value | |
992 // rdx: array | |
993 index_check(rdx, rbx); // prefer index in rbx, | |
994 // rbx,: index | |
995 __ movw(Address(rdx, rbx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)), rax); | |
996 } | |
997 | |
998 | |
999 void TemplateTable::sastore() { | |
1000 castore(); | |
1001 } | |
1002 | |
1003 | |
1004 void TemplateTable::istore(int n) { | |
1005 transition(itos, vtos); | |
1006 __ movl(iaddress(n), rax); | |
1007 } | |
1008 | |
1009 | |
1010 void TemplateTable::lstore(int n) { | |
1011 transition(ltos, vtos); | |
304 | 1012 __ movptr(laddress(n), rax); |
1013 NOT_LP64(__ movptr(haddress(n), rdx)); | |
0 | 1014 } |
1015 | |
1016 | |
1017 void TemplateTable::fstore(int n) { | |
1018 transition(ftos, vtos); | |
1019 __ fstp_s(faddress(n)); | |
1020 } | |
1021 | |
1022 | |
1023 void TemplateTable::dstore(int n) { | |
1024 transition(dtos, vtos); | |
1506 | 1025 __ fstp_d(daddress(n)); |
0 | 1026 } |
1027 | |
1028 | |
1029 void TemplateTable::astore(int n) { | |
1030 transition(vtos, vtos); | |
1506 | 1031 __ pop_ptr(rax); |
304 | 1032 __ movptr(aaddress(n), rax); |
0 | 1033 } |
1034 | |
1035 | |
1036 void TemplateTable::pop() { | |
1037 transition(vtos, vtos); | |
1506 | 1038 __ addptr(rsp, Interpreter::stackElementSize); |
0 | 1039 } |
1040 | |
1041 | |
1042 void TemplateTable::pop2() { | |
1043 transition(vtos, vtos); | |
1506 | 1044 __ addptr(rsp, 2*Interpreter::stackElementSize); |
0 | 1045 } |
1046 | |
1047 | |
1048 void TemplateTable::dup() { | |
1049 transition(vtos, vtos); | |
1050 // stack: ..., a | |
1506 | 1051 __ load_ptr(0, rax); |
1052 __ push_ptr(rax); | |
0 | 1053 // stack: ..., a, a |
1054 } | |
1055 | |
1056 | |
1057 void TemplateTable::dup_x1() { | |
1058 transition(vtos, vtos); | |
1059 // stack: ..., a, b | |
1506 | 1060 __ load_ptr( 0, rax); // load b |
1061 __ load_ptr( 1, rcx); // load a | |
1062 __ store_ptr(1, rax); // store b | |
1063 __ store_ptr(0, rcx); // store a | |
1064 __ push_ptr(rax); // push b | |
0 | 1065 // stack: ..., b, a, b |
1066 } | |
1067 | |
1068 | |
1069 void TemplateTable::dup_x2() { | |
1070 transition(vtos, vtos); | |
1071 // stack: ..., a, b, c | |
1506 | 1072 __ load_ptr( 0, rax); // load c |
1073 __ load_ptr( 2, rcx); // load a | |
1074 __ store_ptr(2, rax); // store c in a | |
1075 __ push_ptr(rax); // push c | |
0 | 1076 // stack: ..., c, b, c, c |
1506 | 1077 __ load_ptr( 2, rax); // load b |
1078 __ store_ptr(2, rcx); // store a in b | |
0 | 1079 // stack: ..., c, a, c, c |
1506 | 1080 __ store_ptr(1, rax); // store b in c |
0 | 1081 // stack: ..., c, a, b, c |
1082 } | |
1083 | |
1084 | |
1085 void TemplateTable::dup2() { | |
1086 transition(vtos, vtos); | |
1087 // stack: ..., a, b | |
1506 | 1088 __ load_ptr(1, rax); // load a |
1089 __ push_ptr(rax); // push a | |
1090 __ load_ptr(1, rax); // load b | |
1091 __ push_ptr(rax); // push b | |
0 | 1092 // stack: ..., a, b, a, b |
1093 } | |
1094 | |
1095 | |
1096 void TemplateTable::dup2_x1() { | |
1097 transition(vtos, vtos); | |
1098 // stack: ..., a, b, c | |
1506 | 1099 __ load_ptr( 0, rcx); // load c |
1100 __ load_ptr( 1, rax); // load b | |
1101 __ push_ptr(rax); // push b | |
1102 __ push_ptr(rcx); // push c | |
0 | 1103 // stack: ..., a, b, c, b, c |
1506 | 1104 __ store_ptr(3, rcx); // store c in b |
0 | 1105 // stack: ..., a, c, c, b, c |
1506 | 1106 __ load_ptr( 4, rcx); // load a |
1107 __ store_ptr(2, rcx); // store a in 2nd c | |
0 | 1108 // stack: ..., a, c, a, b, c |
1506 | 1109 __ store_ptr(4, rax); // store b in a |
0 | 1110 // stack: ..., b, c, a, b, c |
1111 // stack: ..., b, c, a, b, c | |
1112 } | |
1113 | |
1114 | |
1115 void TemplateTable::dup2_x2() { | |
1116 transition(vtos, vtos); | |
1117 // stack: ..., a, b, c, d | |
1506 | 1118 __ load_ptr( 0, rcx); // load d |
1119 __ load_ptr( 1, rax); // load c | |
1120 __ push_ptr(rax); // push c | |
1121 __ push_ptr(rcx); // push d | |
0 | 1122 // stack: ..., a, b, c, d, c, d |
1506 | 1123 __ load_ptr( 4, rax); // load b |
1124 __ store_ptr(2, rax); // store b in d | |
1125 __ store_ptr(4, rcx); // store d in b | |
0 | 1126 // stack: ..., a, d, c, b, c, d |
1506 | 1127 __ load_ptr( 5, rcx); // load a |
1128 __ load_ptr( 3, rax); // load c | |
1129 __ store_ptr(3, rcx); // store a in c | |
1130 __ store_ptr(5, rax); // store c in a | |
0 | 1131 // stack: ..., c, d, a, b, c, d |
1132 // stack: ..., c, d, a, b, c, d | |
1133 } | |
1134 | |
1135 | |
1136 void TemplateTable::swap() { | |
1137 transition(vtos, vtos); | |
1138 // stack: ..., a, b | |
1506 | 1139 __ load_ptr( 1, rcx); // load a |
1140 __ load_ptr( 0, rax); // load b | |
1141 __ store_ptr(0, rcx); // store a in b | |
1142 __ store_ptr(1, rax); // store b in a | |
0 | 1143 // stack: ..., b, a |
1144 } | |
1145 | |
1146 | |
1147 void TemplateTable::iop2(Operation op) { | |
1148 transition(itos, itos); | |
1149 switch (op) { | |
1506 | 1150 case add : __ pop_i(rdx); __ addl (rax, rdx); break; |
304 | 1151 case sub : __ mov(rdx, rax); __ pop_i(rax); __ subl (rax, rdx); break; |
1506 | 1152 case mul : __ pop_i(rdx); __ imull(rax, rdx); break; |
1153 case _and : __ pop_i(rdx); __ andl (rax, rdx); break; | |
1154 case _or : __ pop_i(rdx); __ orl (rax, rdx); break; | |
1155 case _xor : __ pop_i(rdx); __ xorl (rax, rdx); break; | |
304 | 1156 case shl : __ mov(rcx, rax); __ pop_i(rax); __ shll (rax); break; // implicit masking of lower 5 bits by Intel shift instr. |
1157 case shr : __ mov(rcx, rax); __ pop_i(rax); __ sarl (rax); break; // implicit masking of lower 5 bits by Intel shift instr. | |
1158 case ushr : __ mov(rcx, rax); __ pop_i(rax); __ shrl (rax); break; // implicit masking of lower 5 bits by Intel shift instr. | |
0 | 1159 default : ShouldNotReachHere(); |
1160 } | |
1161 } | |
1162 | |
1163 | |
1164 void TemplateTable::lop2(Operation op) { | |
1165 transition(ltos, ltos); | |
1166 __ pop_l(rbx, rcx); | |
1167 switch (op) { | |
1506 | 1168 case add : __ addl(rax, rbx); __ adcl(rdx, rcx); break; |
1169 case sub : __ subl(rbx, rax); __ sbbl(rcx, rdx); | |
1170 __ mov (rax, rbx); __ mov (rdx, rcx); break; | |
1171 case _and : __ andl(rax, rbx); __ andl(rdx, rcx); break; | |
1172 case _or : __ orl (rax, rbx); __ orl (rdx, rcx); break; | |
1173 case _xor : __ xorl(rax, rbx); __ xorl(rdx, rcx); break; | |
1174 default : ShouldNotReachHere(); | |
0 | 1175 } |
1176 } | |
1177 | |
1178 | |
1179 void TemplateTable::idiv() { | |
1180 transition(itos, itos); | |
304 | 1181 __ mov(rcx, rax); |
0 | 1182 __ pop_i(rax); |
1183 // Note: could xor rax, and rcx and compare with (-1 ^ min_int). If | |
1184 // they are not equal, one could do a normal division (no correction | |
1185 // needed), which may speed up this implementation for the common case. | |
1186 // (see also JVM spec., p.243 & p.271) | |
1187 __ corrected_idivl(rcx); | |
1188 } | |
1189 | |
1190 | |
1191 void TemplateTable::irem() { | |
1192 transition(itos, itos); | |
304 | 1193 __ mov(rcx, rax); |
0 | 1194 __ pop_i(rax); |
1195 // Note: could xor rax, and rcx and compare with (-1 ^ min_int). If | |
1196 // they are not equal, one could do a normal division (no correction | |
1197 // needed), which may speed up this implementation for the common case. | |
1198 // (see also JVM spec., p.243 & p.271) | |
1199 __ corrected_idivl(rcx); | |
304 | 1200 __ mov(rax, rdx); |
0 | 1201 } |
1202 | |
1203 | |
1204 void TemplateTable::lmul() { | |
1205 transition(ltos, ltos); | |
1206 __ pop_l(rbx, rcx); | |
304 | 1207 __ push(rcx); __ push(rbx); |
1208 __ push(rdx); __ push(rax); | |
0 | 1209 __ lmul(2 * wordSize, 0); |
304 | 1210 __ addptr(rsp, 4 * wordSize); // take off temporaries |
0 | 1211 } |
1212 | |
1213 | |
1214 void TemplateTable::ldiv() { | |
1215 transition(ltos, ltos); | |
1216 __ pop_l(rbx, rcx); | |
304 | 1217 __ push(rcx); __ push(rbx); |
1218 __ push(rdx); __ push(rax); | |
0 | 1219 // check if y = 0 |
1220 __ orl(rax, rdx); | |
1221 __ jump_cc(Assembler::zero, | |
1222 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1223 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::ldiv)); | |
304 | 1224 __ addptr(rsp, 4 * wordSize); // take off temporaries |
0 | 1225 } |
1226 | |
1227 | |
1228 void TemplateTable::lrem() { | |
1229 transition(ltos, ltos); | |
1230 __ pop_l(rbx, rcx); | |
304 | 1231 __ push(rcx); __ push(rbx); |
1232 __ push(rdx); __ push(rax); | |
0 | 1233 // check if y = 0 |
1234 __ orl(rax, rdx); | |
1235 __ jump_cc(Assembler::zero, | |
1236 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1237 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::lrem)); | |
304 | 1238 __ addptr(rsp, 4 * wordSize); |
0 | 1239 } |
1240 | |
1241 | |
1242 void TemplateTable::lshl() { | |
1243 transition(itos, ltos); | |
1244 __ movl(rcx, rax); // get shift count | |
1245 __ pop_l(rax, rdx); // get shift value | |
1246 __ lshl(rdx, rax); | |
1247 } | |
1248 | |
1249 | |
1250 void TemplateTable::lshr() { | |
1251 transition(itos, ltos); | |
304 | 1252 __ mov(rcx, rax); // get shift count |
0 | 1253 __ pop_l(rax, rdx); // get shift value |
1254 __ lshr(rdx, rax, true); | |
1255 } | |
1256 | |
1257 | |
1258 void TemplateTable::lushr() { | |
1259 transition(itos, ltos); | |
304 | 1260 __ mov(rcx, rax); // get shift count |
0 | 1261 __ pop_l(rax, rdx); // get shift value |
1262 __ lshr(rdx, rax); | |
1263 } | |
1264 | |
1265 | |
1266 void TemplateTable::fop2(Operation op) { | |
1267 transition(ftos, ftos); | |
1268 switch (op) { | |
1269 case add: __ fadd_s (at_rsp()); break; | |
1270 case sub: __ fsubr_s(at_rsp()); break; | |
1271 case mul: __ fmul_s (at_rsp()); break; | |
1272 case div: __ fdivr_s(at_rsp()); break; | |
1273 case rem: __ fld_s (at_rsp()); __ fremr(rax); break; | |
1274 default : ShouldNotReachHere(); | |
1275 } | |
1276 __ f2ieee(); | |
304 | 1277 __ pop(rax); // pop float thing off |
0 | 1278 } |
1279 | |
1280 | |
1281 void TemplateTable::dop2(Operation op) { | |
1282 transition(dtos, dtos); | |
1283 | |
1284 switch (op) { | |
1285 case add: __ fadd_d (at_rsp()); break; | |
1286 case sub: __ fsubr_d(at_rsp()); break; | |
1287 case mul: { | |
1288 Label L_strict; | |
1289 Label L_join; | |
1290 const Address access_flags (rcx, methodOopDesc::access_flags_offset()); | |
1291 __ get_method(rcx); | |
1292 __ movl(rcx, access_flags); | |
1293 __ testl(rcx, JVM_ACC_STRICT); | |
1294 __ jccb(Assembler::notZero, L_strict); | |
1295 __ fmul_d (at_rsp()); | |
1296 __ jmpb(L_join); | |
1297 __ bind(L_strict); | |
1298 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); | |
1299 __ fmulp(); | |
1300 __ fmul_d (at_rsp()); | |
1301 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); | |
1302 __ fmulp(); | |
1303 __ bind(L_join); | |
1304 break; | |
1305 } | |
1306 case div: { | |
1307 Label L_strict; | |
1308 Label L_join; | |
1309 const Address access_flags (rcx, methodOopDesc::access_flags_offset()); | |
1310 __ get_method(rcx); | |
1311 __ movl(rcx, access_flags); | |
1312 __ testl(rcx, JVM_ACC_STRICT); | |
1313 __ jccb(Assembler::notZero, L_strict); | |
1314 __ fdivr_d(at_rsp()); | |
1315 __ jmp(L_join); | |
1316 __ bind(L_strict); | |
1317 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); | |
1318 __ fmul_d (at_rsp()); | |
1319 __ fdivrp(); | |
1320 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); | |
1321 __ fmulp(); | |
1322 __ bind(L_join); | |
1323 break; | |
1324 } | |
1325 case rem: __ fld_d (at_rsp()); __ fremr(rax); break; | |
1326 default : ShouldNotReachHere(); | |
1327 } | |
1328 __ d2ieee(); | |
1329 // Pop double precision number from rsp. | |
304 | 1330 __ pop(rax); |
1331 __ pop(rdx); | |
0 | 1332 } |
1333 | |
1334 | |
1335 void TemplateTable::ineg() { | |
1336 transition(itos, itos); | |
1337 __ negl(rax); | |
1338 } | |
1339 | |
1340 | |
1341 void TemplateTable::lneg() { | |
1342 transition(ltos, ltos); | |
1343 __ lneg(rdx, rax); | |
1344 } | |
1345 | |
1346 | |
1347 void TemplateTable::fneg() { | |
1348 transition(ftos, ftos); | |
1349 __ fchs(); | |
1350 } | |
1351 | |
1352 | |
1353 void TemplateTable::dneg() { | |
1354 transition(dtos, dtos); | |
1355 __ fchs(); | |
1356 } | |
1357 | |
1358 | |
1359 void TemplateTable::iinc() { | |
1360 transition(vtos, vtos); | |
1361 __ load_signed_byte(rdx, at_bcp(2)); // get constant | |
1362 locals_index(rbx); | |
1363 __ addl(iaddress(rbx), rdx); | |
1364 } | |
1365 | |
1366 | |
1367 void TemplateTable::wide_iinc() { | |
1368 transition(vtos, vtos); | |
1369 __ movl(rdx, at_bcp(4)); // get constant | |
1370 locals_index_wide(rbx); | |
304 | 1371 __ bswapl(rdx); // swap bytes & sign-extend constant |
0 | 1372 __ sarl(rdx, 16); |
1373 __ addl(iaddress(rbx), rdx); | |
1374 // Note: should probably use only one movl to get both | |
1375 // the index and the constant -> fix this | |
1376 } | |
1377 | |
1378 | |
1379 void TemplateTable::convert() { | |
1380 // Checking | |
1381 #ifdef ASSERT | |
1382 { TosState tos_in = ilgl; | |
1383 TosState tos_out = ilgl; | |
1384 switch (bytecode()) { | |
1385 case Bytecodes::_i2l: // fall through | |
1386 case Bytecodes::_i2f: // fall through | |
1387 case Bytecodes::_i2d: // fall through | |
1388 case Bytecodes::_i2b: // fall through | |
1389 case Bytecodes::_i2c: // fall through | |
1390 case Bytecodes::_i2s: tos_in = itos; break; | |
1391 case Bytecodes::_l2i: // fall through | |
1392 case Bytecodes::_l2f: // fall through | |
1393 case Bytecodes::_l2d: tos_in = ltos; break; | |
1394 case Bytecodes::_f2i: // fall through | |
1395 case Bytecodes::_f2l: // fall through | |
1396 case Bytecodes::_f2d: tos_in = ftos; break; | |
1397 case Bytecodes::_d2i: // fall through | |
1398 case Bytecodes::_d2l: // fall through | |
1399 case Bytecodes::_d2f: tos_in = dtos; break; | |
1400 default : ShouldNotReachHere(); | |
1401 } | |
1402 switch (bytecode()) { | |
1403 case Bytecodes::_l2i: // fall through | |
1404 case Bytecodes::_f2i: // fall through | |
1405 case Bytecodes::_d2i: // fall through | |
1406 case Bytecodes::_i2b: // fall through | |
1407 case Bytecodes::_i2c: // fall through | |
1408 case Bytecodes::_i2s: tos_out = itos; break; | |
1409 case Bytecodes::_i2l: // fall through | |
1410 case Bytecodes::_f2l: // fall through | |
1411 case Bytecodes::_d2l: tos_out = ltos; break; | |
1412 case Bytecodes::_i2f: // fall through | |
1413 case Bytecodes::_l2f: // fall through | |
1414 case Bytecodes::_d2f: tos_out = ftos; break; | |
1415 case Bytecodes::_i2d: // fall through | |
1416 case Bytecodes::_l2d: // fall through | |
1417 case Bytecodes::_f2d: tos_out = dtos; break; | |
1418 default : ShouldNotReachHere(); | |
1419 } | |
1420 transition(tos_in, tos_out); | |
1421 } | |
1422 #endif // ASSERT | |
1423 | |
1424 // Conversion | |
304 | 1425 // (Note: use push(rcx)/pop(rcx) for 1/2-word stack-ptr manipulation) |
0 | 1426 switch (bytecode()) { |
1427 case Bytecodes::_i2l: | |
1428 __ extend_sign(rdx, rax); | |
1429 break; | |
1430 case Bytecodes::_i2f: | |
304 | 1431 __ push(rax); // store int on tos |
0 | 1432 __ fild_s(at_rsp()); // load int to ST0 |
1433 __ f2ieee(); // truncate to float size | |
304 | 1434 __ pop(rcx); // adjust rsp |
0 | 1435 break; |
1436 case Bytecodes::_i2d: | |
304 | 1437 __ push(rax); // add one slot for d2ieee() |
1438 __ push(rax); // store int on tos | |
0 | 1439 __ fild_s(at_rsp()); // load int to ST0 |
1440 __ d2ieee(); // truncate to double size | |
304 | 1441 __ pop(rcx); // adjust rsp |
1442 __ pop(rcx); | |
0 | 1443 break; |
1444 case Bytecodes::_i2b: | |
1445 __ shll(rax, 24); // truncate upper 24 bits | |
1446 __ sarl(rax, 24); // and sign-extend byte | |
304 | 1447 LP64_ONLY(__ movsbl(rax, rax)); |
0 | 1448 break; |
1449 case Bytecodes::_i2c: | |
1450 __ andl(rax, 0xFFFF); // truncate upper 16 bits | |
304 | 1451 LP64_ONLY(__ movzwl(rax, rax)); |
0 | 1452 break; |
1453 case Bytecodes::_i2s: | |
1454 __ shll(rax, 16); // truncate upper 16 bits | |
1455 __ sarl(rax, 16); // and sign-extend short | |
304 | 1456 LP64_ONLY(__ movswl(rax, rax)); |
0 | 1457 break; |
1458 case Bytecodes::_l2i: | |
1459 /* nothing to do */ | |
1460 break; | |
1461 case Bytecodes::_l2f: | |
304 | 1462 __ push(rdx); // store long on tos |
1463 __ push(rax); | |
0 | 1464 __ fild_d(at_rsp()); // load long to ST0 |
1465 __ f2ieee(); // truncate to float size | |
304 | 1466 __ pop(rcx); // adjust rsp |
1467 __ pop(rcx); | |
0 | 1468 break; |
1469 case Bytecodes::_l2d: | |
304 | 1470 __ push(rdx); // store long on tos |
1471 __ push(rax); | |
0 | 1472 __ fild_d(at_rsp()); // load long to ST0 |
1473 __ d2ieee(); // truncate to double size | |
304 | 1474 __ pop(rcx); // adjust rsp |
1475 __ pop(rcx); | |
0 | 1476 break; |
1477 case Bytecodes::_f2i: | |
304 | 1478 __ push(rcx); // reserve space for argument |
0 | 1479 __ fstp_s(at_rsp()); // pass float argument on stack |
1480 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1); | |
1481 break; | |
1482 case Bytecodes::_f2l: | |
304 | 1483 __ push(rcx); // reserve space for argument |
0 | 1484 __ fstp_s(at_rsp()); // pass float argument on stack |
1485 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1); | |
1486 break; | |
1487 case Bytecodes::_f2d: | |
1488 /* nothing to do */ | |
1489 break; | |
1490 case Bytecodes::_d2i: | |
304 | 1491 __ push(rcx); // reserve space for argument |
1492 __ push(rcx); | |
0 | 1493 __ fstp_d(at_rsp()); // pass double argument on stack |
1494 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 2); | |
1495 break; | |
1496 case Bytecodes::_d2l: | |
304 | 1497 __ push(rcx); // reserve space for argument |
1498 __ push(rcx); | |
0 | 1499 __ fstp_d(at_rsp()); // pass double argument on stack |
1500 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 2); | |
1501 break; | |
1502 case Bytecodes::_d2f: | |
304 | 1503 __ push(rcx); // reserve space for f2ieee() |
0 | 1504 __ f2ieee(); // truncate to float size |
304 | 1505 __ pop(rcx); // adjust rsp |
0 | 1506 break; |
1507 default : | |
1508 ShouldNotReachHere(); | |
1509 } | |
1510 } | |
1511 | |
1512 | |
1513 void TemplateTable::lcmp() { | |
1514 transition(ltos, itos); | |
1515 // y = rdx:rax | |
1516 __ pop_l(rbx, rcx); // get x = rcx:rbx | |
1517 __ lcmp2int(rcx, rbx, rdx, rax);// rcx := cmp(x, y) | |
304 | 1518 __ mov(rax, rcx); |
0 | 1519 } |
1520 | |
1521 | |
1522 void TemplateTable::float_cmp(bool is_float, int unordered_result) { | |
1523 if (is_float) { | |
1524 __ fld_s(at_rsp()); | |
1525 } else { | |
1526 __ fld_d(at_rsp()); | |
304 | 1527 __ pop(rdx); |
0 | 1528 } |
304 | 1529 __ pop(rcx); |
0 | 1530 __ fcmp2int(rax, unordered_result < 0); |
1531 } | |
1532 | |
1533 | |
1534 void TemplateTable::branch(bool is_jsr, bool is_wide) { | |
1535 __ get_method(rcx); // ECX holds method | |
1536 __ profile_taken_branch(rax,rbx); // EAX holds updated MDP, EBX holds bumped taken count | |
1537 | |
1538 const ByteSize be_offset = methodOopDesc::backedge_counter_offset() + InvocationCounter::counter_offset(); | |
1539 const ByteSize inv_offset = methodOopDesc::invocation_counter_offset() + InvocationCounter::counter_offset(); | |
1540 const int method_offset = frame::interpreter_frame_method_offset * wordSize; | |
1541 | |
1542 // Load up EDX with the branch displacement | |
1543 __ movl(rdx, at_bcp(1)); | |
304 | 1544 __ bswapl(rdx); |
0 | 1545 if (!is_wide) __ sarl(rdx, 16); |
304 | 1546 LP64_ONLY(__ movslq(rdx, rdx)); |
1547 | |
0 | 1548 |
1549 // Handle all the JSR stuff here, then exit. | |
1550 // It's much shorter and cleaner than intermingling with the | |
605 | 1551 // non-JSR normal-branch stuff occurring below. |
0 | 1552 if (is_jsr) { |
1553 // Pre-load the next target bytecode into EBX | |
1554 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1, 0)); | |
1555 | |
1556 // compute return address as bci in rax, | |
304 | 1557 __ lea(rax, at_bcp((is_wide ? 5 : 3) - in_bytes(constMethodOopDesc::codes_offset()))); |
1558 __ subptr(rax, Address(rcx, methodOopDesc::const_offset())); | |
362 | 1559 // Adjust the bcp in RSI by the displacement in EDX |
304 | 1560 __ addptr(rsi, rdx); |
0 | 1561 // Push return address |
1562 __ push_i(rax); | |
1563 // jsr returns vtos | |
1564 __ dispatch_only_noverify(vtos); | |
1565 return; | |
1566 } | |
1567 | |
1568 // Normal (non-jsr) branch handling | |
1569 | |
362 | 1570 // Adjust the bcp in RSI by the displacement in EDX |
304 | 1571 __ addptr(rsi, rdx); |
0 | 1572 |
1573 assert(UseLoopCounter || !UseOnStackReplacement, "on-stack-replacement requires loop counters"); | |
1574 Label backedge_counter_overflow; | |
1575 Label profile_method; | |
1576 Label dispatch; | |
1577 if (UseLoopCounter) { | |
1578 // increment backedge counter for backward branches | |
1579 // rax,: MDO | |
1580 // rbx,: MDO bumped taken-count | |
1581 // rcx: method | |
1582 // rdx: target offset | |
1583 // rsi: target bcp | |
1584 // rdi: locals pointer | |
1585 __ testl(rdx, rdx); // check if forward or backward branch | |
1586 __ jcc(Assembler::positive, dispatch); // count only if backward branch | |
1587 | |
1783 | 1588 if (TieredCompilation) { |
1589 Label no_mdo; | |
1590 int increment = InvocationCounter::count_increment; | |
1591 int mask = ((1 << Tier0BackedgeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
1592 if (ProfileInterpreter) { | |
1593 // Are we profiling? | |
1594 __ movptr(rbx, Address(rcx, in_bytes(methodOopDesc::method_data_offset()))); | |
1595 __ testptr(rbx, rbx); | |
1596 __ jccb(Assembler::zero, no_mdo); | |
1597 // Increment the MDO backedge counter | |
1598 const Address mdo_backedge_counter(rbx, in_bytes(methodDataOopDesc::backedge_counter_offset()) + | |
1599 in_bytes(InvocationCounter::counter_offset())); | |
1600 __ increment_mask_and_jump(mdo_backedge_counter, increment, mask, | |
1601 rax, false, Assembler::zero, &backedge_counter_overflow); | |
1602 __ jmp(dispatch); | |
0 | 1603 } |
1783 | 1604 __ bind(no_mdo); |
1605 // Increment backedge counter in methodOop | |
1606 __ increment_mask_and_jump(Address(rcx, be_offset), increment, mask, | |
1607 rax, false, Assembler::zero, &backedge_counter_overflow); | |
0 | 1608 } else { |
1783 | 1609 // increment counter |
1610 __ movl(rax, Address(rcx, be_offset)); // load backedge counter | |
1611 __ incrementl(rax, InvocationCounter::count_increment); // increment counter | |
1612 __ movl(Address(rcx, be_offset), rax); // store counter | |
1613 | |
1614 __ movl(rax, Address(rcx, inv_offset)); // load invocation counter | |
1615 __ andl(rax, InvocationCounter::count_mask_value); // and the status bits | |
1616 __ addl(rax, Address(rcx, be_offset)); // add both counters | |
1617 | |
1618 if (ProfileInterpreter) { | |
1619 // Test to see if we should create a method data oop | |
0 | 1620 __ cmp32(rax, |
1783 | 1621 ExternalAddress((address) &InvocationCounter::InterpreterProfileLimit)); |
1622 __ jcc(Assembler::less, dispatch); | |
1623 | |
1624 // if no method data exists, go to profile method | |
1625 __ test_method_data_pointer(rax, profile_method); | |
1626 | |
1627 if (UseOnStackReplacement) { | |
1628 // check for overflow against rbx, which is the MDO taken count | |
1629 __ cmp32(rbx, | |
1630 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1631 __ jcc(Assembler::below, dispatch); | |
1632 | |
1633 // When ProfileInterpreter is on, the backedge_count comes from the | |
1634 // methodDataOop, which value does not get reset on the call to | |
1635 // frequency_counter_overflow(). To avoid excessive calls to the overflow | |
1636 // routine while the method is being compiled, add a second test to make | |
1637 // sure the overflow function is called only once every overflow_frequency. | |
1638 const int overflow_frequency = 1024; | |
1639 __ andptr(rbx, overflow_frequency-1); | |
1640 __ jcc(Assembler::zero, backedge_counter_overflow); | |
1641 } | |
1642 } else { | |
1643 if (UseOnStackReplacement) { | |
1644 // check for overflow against rax, which is the sum of the counters | |
1645 __ cmp32(rax, | |
1646 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1647 __ jcc(Assembler::aboveEqual, backedge_counter_overflow); | |
1648 | |
1649 } | |
0 | 1650 } |
1651 } | |
1652 __ bind(dispatch); | |
1653 } | |
1654 | |
1655 // Pre-load the next target bytecode into EBX | |
1656 __ load_unsigned_byte(rbx, Address(rsi, 0)); | |
1657 | |
1658 // continue with the bytecode @ target | |
1659 // rax,: return bci for jsr's, unused otherwise | |
1660 // rbx,: target bytecode | |
1661 // rsi: target bcp | |
1662 __ dispatch_only(vtos); | |
1663 | |
1664 if (UseLoopCounter) { | |
1665 if (ProfileInterpreter) { | |
1666 // Out-of-line code to allocate method data oop. | |
1667 __ bind(profile_method); | |
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|
1668 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
0 | 1669 __ load_unsigned_byte(rbx, Address(rsi, 0)); // restore target bytecode |
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|
1670 __ set_method_data_pointer_for_bcp(); |
0 | 1671 __ jmp(dispatch); |
1672 } | |
1673 | |
1674 if (UseOnStackReplacement) { | |
1675 | |
1676 // invocation counter overflow | |
1677 __ bind(backedge_counter_overflow); | |
304 | 1678 __ negptr(rdx); |
1679 __ addptr(rdx, rsi); // branch bcp | |
0 | 1680 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rdx); |
1681 __ load_unsigned_byte(rbx, Address(rsi, 0)); // restore target bytecode | |
1682 | |
1683 // rax,: osr nmethod (osr ok) or NULL (osr not possible) | |
1684 // rbx,: target bytecode | |
1685 // rdx: scratch | |
1686 // rdi: locals pointer | |
1687 // rsi: bcp | |
304 | 1688 __ testptr(rax, rax); // test result |
0 | 1689 __ jcc(Assembler::zero, dispatch); // no osr if null |
1690 // nmethod may have been invalidated (VM may block upon call_VM return) | |
1691 __ movl(rcx, Address(rax, nmethod::entry_bci_offset())); | |
1692 __ cmpl(rcx, InvalidOSREntryBci); | |
1693 __ jcc(Assembler::equal, dispatch); | |
1694 | |
1695 // We have the address of an on stack replacement routine in rax, | |
1696 // We need to prepare to execute the OSR method. First we must | |
1697 // migrate the locals and monitors off of the stack. | |
1698 | |
304 | 1699 __ mov(rbx, rax); // save the nmethod |
0 | 1700 |
1701 const Register thread = rcx; | |
1702 __ get_thread(thread); | |
1703 call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin)); | |
1704 // rax, is OSR buffer, move it to expected parameter location | |
304 | 1705 __ mov(rcx, rax); |
0 | 1706 |
1707 // pop the interpreter frame | |
304 | 1708 __ movptr(rdx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 1709 __ leave(); // remove frame anchor |
304 | 1710 __ pop(rdi); // get return address |
1711 __ mov(rsp, rdx); // set sp to sender sp | |
0 | 1712 |
1713 | |
1714 Label skip; | |
1715 Label chkint; | |
1716 | |
1717 // The interpreter frame we have removed may be returning to | |
1718 // either the callstub or the interpreter. Since we will | |
1719 // now be returning from a compiled (OSR) nmethod we must | |
1720 // adjust the return to the return were it can handler compiled | |
1721 // results and clean the fpu stack. This is very similar to | |
1722 // what a i2c adapter must do. | |
1723 | |
1724 // Are we returning to the call stub? | |
1725 | |
1726 __ cmp32(rdi, ExternalAddress(StubRoutines::_call_stub_return_address)); | |
1727 __ jcc(Assembler::notEqual, chkint); | |
1728 | |
1729 // yes adjust to the specialized call stub return. | |
304 | 1730 assert(StubRoutines::x86::get_call_stub_compiled_return() != NULL, "must be set"); |
1731 __ lea(rdi, ExternalAddress(StubRoutines::x86::get_call_stub_compiled_return())); | |
0 | 1732 __ jmp(skip); |
1733 | |
1734 __ bind(chkint); | |
1735 | |
1736 // Are we returning to the interpreter? Look for sentinel | |
1737 | |
304 | 1738 __ cmpl(Address(rdi, -2*wordSize), Interpreter::return_sentinel); |
0 | 1739 __ jcc(Assembler::notEqual, skip); |
1740 | |
1741 // Adjust to compiled return back to interpreter | |
1742 | |
304 | 1743 __ movptr(rdi, Address(rdi, -wordSize)); |
0 | 1744 __ bind(skip); |
1745 | |
1746 // Align stack pointer for compiled code (note that caller is | |
1747 // responsible for undoing this fixup by remembering the old SP | |
1748 // in an rbp,-relative location) | |
304 | 1749 __ andptr(rsp, -(StackAlignmentInBytes)); |
0 | 1750 |
1751 // push the (possibly adjusted) return address | |
304 | 1752 __ push(rdi); |
0 | 1753 |
1754 // and begin the OSR nmethod | |
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1755 __ jmp(Address(rbx, nmethod::osr_entry_point_offset())); |
0 | 1756 } |
1757 } | |
1758 } | |
1759 | |
1760 | |
1761 void TemplateTable::if_0cmp(Condition cc) { | |
1762 transition(itos, vtos); | |
1763 // assume branch is more often taken than not (loops use backward branches) | |
1764 Label not_taken; | |
1765 __ testl(rax, rax); | |
1766 __ jcc(j_not(cc), not_taken); | |
1767 branch(false, false); | |
1768 __ bind(not_taken); | |
1769 __ profile_not_taken_branch(rax); | |
1770 } | |
1771 | |
1772 | |
1773 void TemplateTable::if_icmp(Condition cc) { | |
1774 transition(itos, vtos); | |
1775 // assume branch is more often taken than not (loops use backward branches) | |
1776 Label not_taken; | |
1777 __ pop_i(rdx); | |
1778 __ cmpl(rdx, rax); | |
1779 __ jcc(j_not(cc), not_taken); | |
1780 branch(false, false); | |
1781 __ bind(not_taken); | |
1782 __ profile_not_taken_branch(rax); | |
1783 } | |
1784 | |
1785 | |
1786 void TemplateTable::if_nullcmp(Condition cc) { | |
1787 transition(atos, vtos); | |
1788 // assume branch is more often taken than not (loops use backward branches) | |
1789 Label not_taken; | |
304 | 1790 __ testptr(rax, rax); |
0 | 1791 __ jcc(j_not(cc), not_taken); |
1792 branch(false, false); | |
1793 __ bind(not_taken); | |
1794 __ profile_not_taken_branch(rax); | |
1795 } | |
1796 | |
1797 | |
1798 void TemplateTable::if_acmp(Condition cc) { | |
1799 transition(atos, vtos); | |
1800 // assume branch is more often taken than not (loops use backward branches) | |
1801 Label not_taken; | |
1802 __ pop_ptr(rdx); | |
304 | 1803 __ cmpptr(rdx, rax); |
0 | 1804 __ jcc(j_not(cc), not_taken); |
1805 branch(false, false); | |
1806 __ bind(not_taken); | |
1807 __ profile_not_taken_branch(rax); | |
1808 } | |
1809 | |
1810 | |
1811 void TemplateTable::ret() { | |
1812 transition(vtos, vtos); | |
1813 locals_index(rbx); | |
304 | 1814 __ movptr(rbx, iaddress(rbx)); // get return bci, compute return bcp |
0 | 1815 __ profile_ret(rbx, rcx); |
1816 __ get_method(rax); | |
304 | 1817 __ movptr(rsi, Address(rax, methodOopDesc::const_offset())); |
1818 __ lea(rsi, Address(rsi, rbx, Address::times_1, | |
1819 constMethodOopDesc::codes_offset())); | |
0 | 1820 __ dispatch_next(vtos); |
1821 } | |
1822 | |
1823 | |
1824 void TemplateTable::wide_ret() { | |
1825 transition(vtos, vtos); | |
1826 locals_index_wide(rbx); | |
304 | 1827 __ movptr(rbx, iaddress(rbx)); // get return bci, compute return bcp |
0 | 1828 __ profile_ret(rbx, rcx); |
1829 __ get_method(rax); | |
304 | 1830 __ movptr(rsi, Address(rax, methodOopDesc::const_offset())); |
1831 __ lea(rsi, Address(rsi, rbx, Address::times_1, constMethodOopDesc::codes_offset())); | |
0 | 1832 __ dispatch_next(vtos); |
1833 } | |
1834 | |
1835 | |
1836 void TemplateTable::tableswitch() { | |
1837 Label default_case, continue_execution; | |
1838 transition(itos, vtos); | |
1839 // align rsi | |
304 | 1840 __ lea(rbx, at_bcp(wordSize)); |
1841 __ andptr(rbx, -wordSize); | |
0 | 1842 // load lo & hi |
1843 __ movl(rcx, Address(rbx, 1 * wordSize)); | |
1844 __ movl(rdx, Address(rbx, 2 * wordSize)); | |
304 | 1845 __ bswapl(rcx); |
1846 __ bswapl(rdx); | |
0 | 1847 // check against lo & hi |
1848 __ cmpl(rax, rcx); | |
1849 __ jccb(Assembler::less, default_case); | |
1850 __ cmpl(rax, rdx); | |
1851 __ jccb(Assembler::greater, default_case); | |
1852 // lookup dispatch offset | |
1853 __ subl(rax, rcx); | |
304 | 1854 __ movl(rdx, Address(rbx, rax, Address::times_4, 3 * BytesPerInt)); |
0 | 1855 __ profile_switch_case(rax, rbx, rcx); |
1856 // continue execution | |
1857 __ bind(continue_execution); | |
304 | 1858 __ bswapl(rdx); |
0 | 1859 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1)); |
304 | 1860 __ addptr(rsi, rdx); |
0 | 1861 __ dispatch_only(vtos); |
1862 // handle default | |
1863 __ bind(default_case); | |
1864 __ profile_switch_default(rax); | |
1865 __ movl(rdx, Address(rbx, 0)); | |
1866 __ jmp(continue_execution); | |
1867 } | |
1868 | |
1869 | |
1870 void TemplateTable::lookupswitch() { | |
1871 transition(itos, itos); | |
1872 __ stop("lookupswitch bytecode should have been rewritten"); | |
1873 } | |
1874 | |
1875 | |
1876 void TemplateTable::fast_linearswitch() { | |
1877 transition(itos, vtos); | |
1878 Label loop_entry, loop, found, continue_execution; | |
304 | 1879 // bswapl rax, so we can avoid bswapping the table entries |
1880 __ bswapl(rax); | |
0 | 1881 // align rsi |
304 | 1882 __ lea(rbx, at_bcp(wordSize)); // btw: should be able to get rid of this instruction (change offsets below) |
1883 __ andptr(rbx, -wordSize); | |
0 | 1884 // set counter |
1885 __ movl(rcx, Address(rbx, wordSize)); | |
304 | 1886 __ bswapl(rcx); |
0 | 1887 __ jmpb(loop_entry); |
1888 // table search | |
1889 __ bind(loop); | |
1890 __ cmpl(rax, Address(rbx, rcx, Address::times_8, 2 * wordSize)); | |
1891 __ jccb(Assembler::equal, found); | |
1892 __ bind(loop_entry); | |
304 | 1893 __ decrementl(rcx); |
0 | 1894 __ jcc(Assembler::greaterEqual, loop); |
1895 // default case | |
1896 __ profile_switch_default(rax); | |
1897 __ movl(rdx, Address(rbx, 0)); | |
1898 __ jmpb(continue_execution); | |
1899 // entry found -> get offset | |
1900 __ bind(found); | |
1901 __ movl(rdx, Address(rbx, rcx, Address::times_8, 3 * wordSize)); | |
1902 __ profile_switch_case(rcx, rax, rbx); | |
1903 // continue execution | |
1904 __ bind(continue_execution); | |
304 | 1905 __ bswapl(rdx); |
0 | 1906 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1)); |
304 | 1907 __ addptr(rsi, rdx); |
0 | 1908 __ dispatch_only(vtos); |
1909 } | |
1910 | |
1911 | |
1912 void TemplateTable::fast_binaryswitch() { | |
1913 transition(itos, vtos); | |
1914 // Implementation using the following core algorithm: | |
1915 // | |
1916 // int binary_search(int key, LookupswitchPair* array, int n) { | |
1917 // // Binary search according to "Methodik des Programmierens" by | |
1918 // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985. | |
1919 // int i = 0; | |
1920 // int j = n; | |
1921 // while (i+1 < j) { | |
1922 // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q) | |
1923 // // with Q: for all i: 0 <= i < n: key < a[i] | |
1924 // // where a stands for the array and assuming that the (inexisting) | |
1925 // // element a[n] is infinitely big. | |
1926 // int h = (i + j) >> 1; | |
1927 // // i < h < j | |
1928 // if (key < array[h].fast_match()) { | |
1929 // j = h; | |
1930 // } else { | |
1931 // i = h; | |
1932 // } | |
1933 // } | |
1934 // // R: a[i] <= key < a[i+1] or Q | |
1935 // // (i.e., if key is within array, i is the correct index) | |
1936 // return i; | |
1937 // } | |
1938 | |
1939 // register allocation | |
1940 const Register key = rax; // already set (tosca) | |
1941 const Register array = rbx; | |
1942 const Register i = rcx; | |
1943 const Register j = rdx; | |
1944 const Register h = rdi; // needs to be restored | |
1945 const Register temp = rsi; | |
1946 // setup array | |
1947 __ save_bcp(); | |
1948 | |
304 | 1949 __ lea(array, at_bcp(3*wordSize)); // btw: should be able to get rid of this instruction (change offsets below) |
1950 __ andptr(array, -wordSize); | |
0 | 1951 // initialize i & j |
1952 __ xorl(i, i); // i = 0; | |
1953 __ movl(j, Address(array, -wordSize)); // j = length(array); | |
1954 // Convert j into native byteordering | |
304 | 1955 __ bswapl(j); |
0 | 1956 // and start |
1957 Label entry; | |
1958 __ jmp(entry); | |
1959 | |
1960 // binary search loop | |
1961 { Label loop; | |
1962 __ bind(loop); | |
1963 // int h = (i + j) >> 1; | |
1964 __ leal(h, Address(i, j, Address::times_1)); // h = i + j; | |
1965 __ sarl(h, 1); // h = (i + j) >> 1; | |
1966 // if (key < array[h].fast_match()) { | |
1967 // j = h; | |
1968 // } else { | |
1969 // i = h; | |
1970 // } | |
1971 // Convert array[h].match to native byte-ordering before compare | |
1972 __ movl(temp, Address(array, h, Address::times_8, 0*wordSize)); | |
304 | 1973 __ bswapl(temp); |
0 | 1974 __ cmpl(key, temp); |
1975 if (VM_Version::supports_cmov()) { | |
1976 __ cmovl(Assembler::less , j, h); // j = h if (key < array[h].fast_match()) | |
1977 __ cmovl(Assembler::greaterEqual, i, h); // i = h if (key >= array[h].fast_match()) | |
1978 } else { | |
1979 Label set_i, end_of_if; | |
304 | 1980 __ jccb(Assembler::greaterEqual, set_i); // { |
1981 __ mov(j, h); // j = h; | |
1982 __ jmp(end_of_if); // } | |
1983 __ bind(set_i); // else { | |
1984 __ mov(i, h); // i = h; | |
1985 __ bind(end_of_if); // } | |
0 | 1986 } |
1987 // while (i+1 < j) | |
1988 __ bind(entry); | |
1989 __ leal(h, Address(i, 1)); // i+1 | |
1990 __ cmpl(h, j); // i+1 < j | |
1991 __ jcc(Assembler::less, loop); | |
1992 } | |
1993 | |
1994 // end of binary search, result index is i (must check again!) | |
1995 Label default_case; | |
1996 // Convert array[i].match to native byte-ordering before compare | |
1997 __ movl(temp, Address(array, i, Address::times_8, 0*wordSize)); | |
304 | 1998 __ bswapl(temp); |
0 | 1999 __ cmpl(key, temp); |
2000 __ jcc(Assembler::notEqual, default_case); | |
2001 | |
2002 // entry found -> j = offset | |
2003 __ movl(j , Address(array, i, Address::times_8, 1*wordSize)); | |
2004 __ profile_switch_case(i, key, array); | |
304 | 2005 __ bswapl(j); |
2006 LP64_ONLY(__ movslq(j, j)); | |
0 | 2007 __ restore_bcp(); |
2008 __ restore_locals(); // restore rdi | |
2009 __ load_unsigned_byte(rbx, Address(rsi, j, Address::times_1)); | |
2010 | |
304 | 2011 __ addptr(rsi, j); |
0 | 2012 __ dispatch_only(vtos); |
2013 | |
2014 // default case -> j = default offset | |
2015 __ bind(default_case); | |
2016 __ profile_switch_default(i); | |
2017 __ movl(j, Address(array, -2*wordSize)); | |
304 | 2018 __ bswapl(j); |
2019 LP64_ONLY(__ movslq(j, j)); | |
0 | 2020 __ restore_bcp(); |
2021 __ restore_locals(); // restore rdi | |
2022 __ load_unsigned_byte(rbx, Address(rsi, j, Address::times_1)); | |
304 | 2023 __ addptr(rsi, j); |
0 | 2024 __ dispatch_only(vtos); |
2025 } | |
2026 | |
2027 | |
2028 void TemplateTable::_return(TosState state) { | |
2029 transition(state, state); | |
2030 assert(_desc->calls_vm(), "inconsistent calls_vm information"); // call in remove_activation | |
2031 | |
2032 if (_desc->bytecode() == Bytecodes::_return_register_finalizer) { | |
2033 assert(state == vtos, "only valid state"); | |
304 | 2034 __ movptr(rax, aaddress(0)); |
2035 __ movptr(rdi, Address(rax, oopDesc::klass_offset_in_bytes())); | |
0 | 2036 __ movl(rdi, Address(rdi, Klass::access_flags_offset_in_bytes() + sizeof(oopDesc))); |
2037 __ testl(rdi, JVM_ACC_HAS_FINALIZER); | |
2038 Label skip_register_finalizer; | |
2039 __ jcc(Assembler::zero, skip_register_finalizer); | |
2040 | |
2041 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), rax); | |
2042 | |
2043 __ bind(skip_register_finalizer); | |
2044 } | |
2045 | |
2046 __ remove_activation(state, rsi); | |
2047 __ jmp(rsi); | |
2048 } | |
2049 | |
2050 | |
2051 // ---------------------------------------------------------------------------- | |
2052 // Volatile variables demand their effects be made known to all CPU's in | |
2053 // order. Store buffers on most chips allow reads & writes to reorder; the | |
2054 // JMM's ReadAfterWrite.java test fails in -Xint mode without some kind of | |
2055 // memory barrier (i.e., it's not sufficient that the interpreter does not | |
2056 // reorder volatile references, the hardware also must not reorder them). | |
2057 // | |
2058 // According to the new Java Memory Model (JMM): | |
2059 // (1) All volatiles are serialized wrt to each other. | |
2060 // ALSO reads & writes act as aquire & release, so: | |
2061 // (2) A read cannot let unrelated NON-volatile memory refs that happen after | |
2062 // the read float up to before the read. It's OK for non-volatile memory refs | |
2063 // that happen before the volatile read to float down below it. | |
2064 // (3) Similar a volatile write cannot let unrelated NON-volatile memory refs | |
2065 // that happen BEFORE the write float down to after the write. It's OK for | |
2066 // non-volatile memory refs that happen after the volatile write to float up | |
2067 // before it. | |
2068 // | |
2069 // We only put in barriers around volatile refs (they are expensive), not | |
2070 // _between_ memory refs (that would require us to track the flavor of the | |
2071 // previous memory refs). Requirements (2) and (3) require some barriers | |
2072 // before volatile stores and after volatile loads. These nearly cover | |
2073 // requirement (1) but miss the volatile-store-volatile-load case. This final | |
2074 // case is placed after volatile-stores although it could just as well go | |
2075 // before volatile-loads. | |
304 | 2076 void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits order_constraint ) { |
0 | 2077 // Helper function to insert a is-volatile test and memory barrier |
2078 if( !os::is_MP() ) return; // Not needed on single CPU | |
304 | 2079 __ membar(order_constraint); |
0 | 2080 } |
2081 | |
1565 | 2082 void TemplateTable::resolve_cache_and_index(int byte_no, |
2083 Register result, | |
2084 Register Rcache, | |
2085 Register index, | |
2086 size_t index_size) { | |
0 | 2087 Register temp = rbx; |
2088 | |
1565 | 2089 assert_different_registers(result, Rcache, index, temp); |
2090 | |
0 | 2091 Label resolved; |
1565 | 2092 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size); |
2093 if (byte_no == f1_oop) { | |
2094 // We are resolved if the f1 field contains a non-null object (CallSite, etc.) | |
2095 // This kind of CP cache entry does not need to match the flags byte, because | |
2096 // there is a 1-1 relation between bytecode type and CP entry type. | |
2097 assert(result != noreg, ""); //else do cmpptr(Address(...), (int32_t) NULL_WORD) | |
2098 __ movptr(result, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f1_offset())); | |
2099 __ testptr(result, result); | |
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2100 __ jcc(Assembler::notEqual, resolved); |
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2101 } else { |
1565 | 2102 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range"); |
2103 assert(result == noreg, ""); //else change code for setting result | |
2104 const int shift_count = (1 + byte_no)*BitsPerByte; | |
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2105 __ movl(temp, Address(Rcache, index, Address::times_4, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::indices_offset())); |
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2106 __ shrl(temp, shift_count); |
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2107 // have we resolved this bytecode? |
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2108 __ andl(temp, 0xFF); |
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2109 __ cmpl(temp, (int)bytecode()); |
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2110 __ jcc(Assembler::equal, resolved); |
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2111 } |
0 | 2112 |
2113 // resolve first time through | |
2114 address entry; | |
2115 switch (bytecode()) { | |
2116 case Bytecodes::_getstatic : // fall through | |
2117 case Bytecodes::_putstatic : // fall through | |
2118 case Bytecodes::_getfield : // fall through | |
2119 case Bytecodes::_putfield : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put); break; | |
2120 case Bytecodes::_invokevirtual : // fall through | |
2121 case Bytecodes::_invokespecial : // fall through | |
2122 case Bytecodes::_invokestatic : // fall through | |
2123 case Bytecodes::_invokeinterface: entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); break; | |
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2124 case Bytecodes::_invokedynamic : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic); break; |
1602 | 2125 case Bytecodes::_fast_aldc : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); break; |
2126 case Bytecodes::_fast_aldc_w : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); break; | |
0 | 2127 default : ShouldNotReachHere(); break; |
2128 } | |
2129 __ movl(temp, (int)bytecode()); | |
2130 __ call_VM(noreg, entry, temp); | |
2131 // Update registers with resolved info | |
1565 | 2132 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size); |
2133 if (result != noreg) | |
2134 __ movptr(result, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f1_offset())); | |
0 | 2135 __ bind(resolved); |
2136 } | |
2137 | |
2138 | |
2139 // The cache and index registers must be set before call | |
2140 void TemplateTable::load_field_cp_cache_entry(Register obj, | |
2141 Register cache, | |
2142 Register index, | |
2143 Register off, | |
2144 Register flags, | |
2145 bool is_static = false) { | |
2146 assert_different_registers(cache, index, flags, off); | |
2147 | |
2148 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset(); | |
2149 // Field offset | |
304 | 2150 __ movptr(off, Address(cache, index, Address::times_ptr, |
2151 in_bytes(cp_base_offset + ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2152 // Flags |
304 | 2153 __ movl(flags, Address(cache, index, Address::times_ptr, |
0 | 2154 in_bytes(cp_base_offset + ConstantPoolCacheEntry::flags_offset()))); |
2155 | |
2156 // klass overwrite register | |
2157 if (is_static) { | |
304 | 2158 __ movptr(obj, Address(cache, index, Address::times_ptr, |
2159 in_bytes(cp_base_offset + ConstantPoolCacheEntry::f1_offset()))); | |
0 | 2160 } |
2161 } | |
2162 | |
2163 void TemplateTable::load_invoke_cp_cache_entry(int byte_no, | |
2164 Register method, | |
2165 Register itable_index, | |
2166 Register flags, | |
2167 bool is_invokevirtual, | |
1565 | 2168 bool is_invokevfinal /*unused*/, |
2169 bool is_invokedynamic) { | |
0 | 2170 // setup registers |
2171 const Register cache = rcx; | |
2172 const Register index = rdx; | |
2173 assert_different_registers(method, flags); | |
2174 assert_different_registers(method, cache, index); | |
2175 assert_different_registers(itable_index, flags); | |
2176 assert_different_registers(itable_index, cache, index); | |
2177 // determine constant pool cache field offsets | |
2178 const int method_offset = in_bytes( | |
2179 constantPoolCacheOopDesc::base_offset() + | |
2180 (is_invokevirtual | |
2181 ? ConstantPoolCacheEntry::f2_offset() | |
2182 : ConstantPoolCacheEntry::f1_offset() | |
2183 ) | |
2184 ); | |
2185 const int flags_offset = in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2186 ConstantPoolCacheEntry::flags_offset()); | |
2187 // access constant pool cache fields | |
2188 const int index_offset = in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2189 ConstantPoolCacheEntry::f2_offset()); | |
2190 | |
1565 | 2191 if (byte_no == f1_oop) { |
2192 // Resolved f1_oop goes directly into 'method' register. | |
2193 assert(is_invokedynamic, ""); | |
2194 resolve_cache_and_index(byte_no, method, cache, index, sizeof(u4)); | |
2195 } else { | |
2196 resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2)); | |
2197 __ movptr(method, Address(cache, index, Address::times_ptr, method_offset)); | |
2198 } | |
0 | 2199 if (itable_index != noreg) { |
304 | 2200 __ movptr(itable_index, Address(cache, index, Address::times_ptr, index_offset)); |
0 | 2201 } |
1565 | 2202 __ movl(flags, Address(cache, index, Address::times_ptr, flags_offset)); |
0 | 2203 } |
2204 | |
2205 | |
2206 // The registers cache and index expected to be set before call. | |
2207 // Correct values of the cache and index registers are preserved. | |
2208 void TemplateTable::jvmti_post_field_access(Register cache, | |
2209 Register index, | |
2210 bool is_static, | |
2211 bool has_tos) { | |
2212 if (JvmtiExport::can_post_field_access()) { | |
2213 // Check to see if a field access watch has been set before we take | |
2214 // the time to call into the VM. | |
2215 Label L1; | |
2216 assert_different_registers(cache, index, rax); | |
2217 __ mov32(rax, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2218 __ testl(rax,rax); | |
2219 __ jcc(Assembler::zero, L1); | |
2220 | |
2221 // cache entry pointer | |
304 | 2222 __ addptr(cache, in_bytes(constantPoolCacheOopDesc::base_offset())); |
0 | 2223 __ shll(index, LogBytesPerWord); |
304 | 2224 __ addptr(cache, index); |
0 | 2225 if (is_static) { |
304 | 2226 __ xorptr(rax, rax); // NULL object reference |
0 | 2227 } else { |
2228 __ pop(atos); // Get the object | |
2229 __ verify_oop(rax); | |
2230 __ push(atos); // Restore stack state | |
2231 } | |
2232 // rax,: object pointer or NULL | |
2233 // cache: cache entry pointer | |
2234 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), | |
2235 rax, cache); | |
2236 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2237 __ bind(L1); | |
2238 } | |
2239 } | |
2240 | |
2241 void TemplateTable::pop_and_check_object(Register r) { | |
2242 __ pop_ptr(r); | |
2243 __ null_check(r); // for field access must check obj. | |
2244 __ verify_oop(r); | |
2245 } | |
2246 | |
2247 void TemplateTable::getfield_or_static(int byte_no, bool is_static) { | |
2248 transition(vtos, vtos); | |
2249 | |
2250 const Register cache = rcx; | |
2251 const Register index = rdx; | |
2252 const Register obj = rcx; | |
2253 const Register off = rbx; | |
2254 const Register flags = rax; | |
2255 | |
1565 | 2256 resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2)); |
0 | 2257 jvmti_post_field_access(cache, index, is_static, false); |
2258 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2259 | |
2260 if (!is_static) pop_and_check_object(obj); | |
2261 | |
2262 const Address lo(obj, off, Address::times_1, 0*wordSize); | |
2263 const Address hi(obj, off, Address::times_1, 1*wordSize); | |
2264 | |
2265 Label Done, notByte, notInt, notShort, notChar, notLong, notFloat, notObj, notDouble; | |
2266 | |
2267 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2268 assert(btos == 0, "change code, btos != 0"); | |
2269 // btos | |
304 | 2270 __ andptr(flags, 0x0f); |
0 | 2271 __ jcc(Assembler::notZero, notByte); |
2272 | |
2273 __ load_signed_byte(rax, lo ); | |
2274 __ push(btos); | |
2275 // Rewrite bytecode to be faster | |
2276 if (!is_static) { | |
2277 patch_bytecode(Bytecodes::_fast_bgetfield, rcx, rbx); | |
2278 } | |
2279 __ jmp(Done); | |
2280 | |
2281 __ bind(notByte); | |
2282 // itos | |
2283 __ cmpl(flags, itos ); | |
2284 __ jcc(Assembler::notEqual, notInt); | |
2285 | |
2286 __ movl(rax, lo ); | |
2287 __ push(itos); | |
2288 // Rewrite bytecode to be faster | |
2289 if (!is_static) { | |
2290 patch_bytecode(Bytecodes::_fast_igetfield, rcx, rbx); | |
2291 } | |
2292 __ jmp(Done); | |
2293 | |
2294 __ bind(notInt); | |
2295 // atos | |
2296 __ cmpl(flags, atos ); | |
2297 __ jcc(Assembler::notEqual, notObj); | |
2298 | |
2299 __ movl(rax, lo ); | |
2300 __ push(atos); | |
2301 if (!is_static) { | |
2302 patch_bytecode(Bytecodes::_fast_agetfield, rcx, rbx); | |
2303 } | |
2304 __ jmp(Done); | |
2305 | |
2306 __ bind(notObj); | |
2307 // ctos | |
2308 __ cmpl(flags, ctos ); | |
2309 __ jcc(Assembler::notEqual, notChar); | |
2310 | |
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2311 __ load_unsigned_short(rax, lo ); |
0 | 2312 __ push(ctos); |
2313 if (!is_static) { | |
2314 patch_bytecode(Bytecodes::_fast_cgetfield, rcx, rbx); | |
2315 } | |
2316 __ jmp(Done); | |
2317 | |
2318 __ bind(notChar); | |
2319 // stos | |
2320 __ cmpl(flags, stos ); | |
2321 __ jcc(Assembler::notEqual, notShort); | |
2322 | |
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2323 __ load_signed_short(rax, lo ); |
0 | 2324 __ push(stos); |
2325 if (!is_static) { | |
2326 patch_bytecode(Bytecodes::_fast_sgetfield, rcx, rbx); | |
2327 } | |
2328 __ jmp(Done); | |
2329 | |
2330 __ bind(notShort); | |
2331 // ltos | |
2332 __ cmpl(flags, ltos ); | |
2333 __ jcc(Assembler::notEqual, notLong); | |
2334 | |
2335 // Generate code as if volatile. There just aren't enough registers to | |
2336 // save that information and this code is faster than the test. | |
2337 __ fild_d(lo); // Must load atomically | |
304 | 2338 __ subptr(rsp,2*wordSize); // Make space for store |
0 | 2339 __ fistp_d(Address(rsp,0)); |
304 | 2340 __ pop(rax); |
2341 __ pop(rdx); | |
0 | 2342 |
2343 __ push(ltos); | |
2344 // Don't rewrite to _fast_lgetfield for potential volatile case. | |
2345 __ jmp(Done); | |
2346 | |
2347 __ bind(notLong); | |
2348 // ftos | |
2349 __ cmpl(flags, ftos ); | |
2350 __ jcc(Assembler::notEqual, notFloat); | |
2351 | |
2352 __ fld_s(lo); | |
2353 __ push(ftos); | |
2354 if (!is_static) { | |
2355 patch_bytecode(Bytecodes::_fast_fgetfield, rcx, rbx); | |
2356 } | |
2357 __ jmp(Done); | |
2358 | |
2359 __ bind(notFloat); | |
2360 // dtos | |
2361 __ cmpl(flags, dtos ); | |
2362 __ jcc(Assembler::notEqual, notDouble); | |
2363 | |
2364 __ fld_d(lo); | |
2365 __ push(dtos); | |
2366 if (!is_static) { | |
2367 patch_bytecode(Bytecodes::_fast_dgetfield, rcx, rbx); | |
2368 } | |
2369 __ jmpb(Done); | |
2370 | |
2371 __ bind(notDouble); | |
2372 | |
2373 __ stop("Bad state"); | |
2374 | |
2375 __ bind(Done); | |
2376 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). | |
2377 // volatile_barrier( ); | |
2378 } | |
2379 | |
2380 | |
2381 void TemplateTable::getfield(int byte_no) { | |
2382 getfield_or_static(byte_no, false); | |
2383 } | |
2384 | |
2385 | |
2386 void TemplateTable::getstatic(int byte_no) { | |
2387 getfield_or_static(byte_no, true); | |
2388 } | |
2389 | |
2390 // The registers cache and index expected to be set before call. | |
2391 // The function may destroy various registers, just not the cache and index registers. | |
2392 void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) { | |
2393 | |
2394 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset(); | |
2395 | |
2396 if (JvmtiExport::can_post_field_modification()) { | |
2397 // Check to see if a field modification watch has been set before we take | |
2398 // the time to call into the VM. | |
2399 Label L1; | |
2400 assert_different_registers(cache, index, rax); | |
2401 __ mov32(rax, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
2402 __ testl(rax, rax); | |
2403 __ jcc(Assembler::zero, L1); | |
2404 | |
2405 // The cache and index registers have been already set. | |
2406 // This allows to eliminate this call but the cache and index | |
2407 // registers have to be correspondingly used after this line. | |
2408 __ get_cache_and_index_at_bcp(rax, rdx, 1); | |
2409 | |
2410 if (is_static) { | |
2411 // Life is simple. Null out the object pointer. | |
304 | 2412 __ xorptr(rbx, rbx); |
0 | 2413 } else { |
2414 // Life is harder. The stack holds the value on top, followed by the object. | |
2415 // We don't know the size of the value, though; it could be one or two words | |
2416 // depending on its type. As a result, we must find the type to determine where | |
2417 // the object is. | |
2418 Label two_word, valsize_known; | |
304 | 2419 __ movl(rcx, Address(rax, rdx, Address::times_ptr, in_bytes(cp_base_offset + |
0 | 2420 ConstantPoolCacheEntry::flags_offset()))); |
304 | 2421 __ mov(rbx, rsp); |
0 | 2422 __ shrl(rcx, ConstantPoolCacheEntry::tosBits); |
2423 // Make sure we don't need to mask rcx for tosBits after the above shift | |
2424 ConstantPoolCacheEntry::verify_tosBits(); | |
2425 __ cmpl(rcx, ltos); | |
2426 __ jccb(Assembler::equal, two_word); | |
2427 __ cmpl(rcx, dtos); | |
2428 __ jccb(Assembler::equal, two_word); | |
304 | 2429 __ addptr(rbx, Interpreter::expr_offset_in_bytes(1)); // one word jvalue (not ltos, dtos) |
0 | 2430 __ jmpb(valsize_known); |
2431 | |
2432 __ bind(two_word); | |
304 | 2433 __ addptr(rbx, Interpreter::expr_offset_in_bytes(2)); // two words jvalue |
0 | 2434 |
2435 __ bind(valsize_known); | |
2436 // setup object pointer | |
304 | 2437 __ movptr(rbx, Address(rbx, 0)); |
0 | 2438 } |
2439 // cache entry pointer | |
304 | 2440 __ addptr(rax, in_bytes(cp_base_offset)); |
0 | 2441 __ shll(rdx, LogBytesPerWord); |
304 | 2442 __ addptr(rax, rdx); |
0 | 2443 // object (tos) |
304 | 2444 __ mov(rcx, rsp); |
0 | 2445 // rbx,: object pointer set up above (NULL if static) |
2446 // rax,: cache entry pointer | |
2447 // rcx: jvalue object on the stack | |
2448 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), | |
2449 rbx, rax, rcx); | |
2450 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2451 __ bind(L1); | |
2452 } | |
2453 } | |
2454 | |
2455 | |
2456 void TemplateTable::putfield_or_static(int byte_no, bool is_static) { | |
2457 transition(vtos, vtos); | |
2458 | |
2459 const Register cache = rcx; | |
2460 const Register index = rdx; | |
2461 const Register obj = rcx; | |
2462 const Register off = rbx; | |
2463 const Register flags = rax; | |
2464 | |
1565 | 2465 resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2)); |
0 | 2466 jvmti_post_field_mod(cache, index, is_static); |
2467 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2468 | |
2469 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). | |
2470 // volatile_barrier( ); | |
2471 | |
2472 Label notVolatile, Done; | |
2473 __ movl(rdx, flags); | |
2474 __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2475 __ andl(rdx, 0x1); | |
2476 | |
2477 // field addresses | |
2478 const Address lo(obj, off, Address::times_1, 0*wordSize); | |
2479 const Address hi(obj, off, Address::times_1, 1*wordSize); | |
2480 | |
2481 Label notByte, notInt, notShort, notChar, notLong, notFloat, notObj, notDouble; | |
2482 | |
2483 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2484 assert(btos == 0, "change code, btos != 0"); | |
2485 // btos | |
2486 __ andl(flags, 0x0f); | |
2487 __ jcc(Assembler::notZero, notByte); | |
2488 | |
2489 __ pop(btos); | |
2490 if (!is_static) pop_and_check_object(obj); | |
2491 __ movb(lo, rax ); | |
2492 if (!is_static) { | |
2493 patch_bytecode(Bytecodes::_fast_bputfield, rcx, rbx); | |
2494 } | |
2495 __ jmp(Done); | |
2496 | |
2497 __ bind(notByte); | |
2498 // itos | |
2499 __ cmpl(flags, itos ); | |
2500 __ jcc(Assembler::notEqual, notInt); | |
2501 | |
2502 __ pop(itos); | |
2503 if (!is_static) pop_and_check_object(obj); | |
2504 | |
2505 __ movl(lo, rax ); | |
2506 if (!is_static) { | |
2507 patch_bytecode(Bytecodes::_fast_iputfield, rcx, rbx); | |
2508 } | |
2509 __ jmp(Done); | |
2510 | |
2511 __ bind(notInt); | |
2512 // atos | |
2513 __ cmpl(flags, atos ); | |
2514 __ jcc(Assembler::notEqual, notObj); | |
2515 | |
2516 __ pop(atos); | |
2517 if (!is_static) pop_and_check_object(obj); | |
2518 | |
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2519 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
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2520 |
0 | 2521 if (!is_static) { |
2522 patch_bytecode(Bytecodes::_fast_aputfield, rcx, rbx); | |
2523 } | |
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2524 |
0 | 2525 __ jmp(Done); |
2526 | |
2527 __ bind(notObj); | |
2528 // ctos | |
2529 __ cmpl(flags, ctos ); | |
2530 __ jcc(Assembler::notEqual, notChar); | |
2531 | |
2532 __ pop(ctos); | |
2533 if (!is_static) pop_and_check_object(obj); | |
2534 __ movw(lo, rax ); | |
2535 if (!is_static) { | |
2536 patch_bytecode(Bytecodes::_fast_cputfield, rcx, rbx); | |
2537 } | |
2538 __ jmp(Done); | |
2539 | |
2540 __ bind(notChar); | |
2541 // stos | |
2542 __ cmpl(flags, stos ); | |
2543 __ jcc(Assembler::notEqual, notShort); | |
2544 | |
2545 __ pop(stos); | |
2546 if (!is_static) pop_and_check_object(obj); | |
2547 __ movw(lo, rax ); | |
2548 if (!is_static) { | |
2549 patch_bytecode(Bytecodes::_fast_sputfield, rcx, rbx); | |
2550 } | |
2551 __ jmp(Done); | |
2552 | |
2553 __ bind(notShort); | |
2554 // ltos | |
2555 __ cmpl(flags, ltos ); | |
2556 __ jcc(Assembler::notEqual, notLong); | |
2557 | |
2558 Label notVolatileLong; | |
2559 __ testl(rdx, rdx); | |
2560 __ jcc(Assembler::zero, notVolatileLong); | |
2561 | |
2562 __ pop(ltos); // overwrites rdx, do this after testing volatile. | |
2563 if (!is_static) pop_and_check_object(obj); | |
2564 | |
2565 // Replace with real volatile test | |
304 | 2566 __ push(rdx); |
2567 __ push(rax); // Must update atomically with FIST | |
0 | 2568 __ fild_d(Address(rsp,0)); // So load into FPU register |
2569 __ fistp_d(lo); // and put into memory atomically | |
304 | 2570 __ addptr(rsp, 2*wordSize); |
2571 // volatile_barrier(); | |
2572 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | | |
2573 Assembler::StoreStore)); | |
0 | 2574 // Don't rewrite volatile version |
2575 __ jmp(notVolatile); | |
2576 | |
2577 __ bind(notVolatileLong); | |
2578 | |
2579 __ pop(ltos); // overwrites rdx | |
2580 if (!is_static) pop_and_check_object(obj); | |
304 | 2581 NOT_LP64(__ movptr(hi, rdx)); |
2582 __ movptr(lo, rax); | |
0 | 2583 if (!is_static) { |
2584 patch_bytecode(Bytecodes::_fast_lputfield, rcx, rbx); | |
2585 } | |
2586 __ jmp(notVolatile); | |
2587 | |
2588 __ bind(notLong); | |
2589 // ftos | |
2590 __ cmpl(flags, ftos ); | |
2591 __ jcc(Assembler::notEqual, notFloat); | |
2592 | |
2593 __ pop(ftos); | |
2594 if (!is_static) pop_and_check_object(obj); | |
2595 __ fstp_s(lo); | |
2596 if (!is_static) { | |
2597 patch_bytecode(Bytecodes::_fast_fputfield, rcx, rbx); | |
2598 } | |
2599 __ jmp(Done); | |
2600 | |
2601 __ bind(notFloat); | |
2602 // dtos | |
2603 __ cmpl(flags, dtos ); | |
2604 __ jcc(Assembler::notEqual, notDouble); | |
2605 | |
2606 __ pop(dtos); | |
2607 if (!is_static) pop_and_check_object(obj); | |
2608 __ fstp_d(lo); | |
2609 if (!is_static) { | |
2610 patch_bytecode(Bytecodes::_fast_dputfield, rcx, rbx); | |
2611 } | |
2612 __ jmp(Done); | |
2613 | |
2614 __ bind(notDouble); | |
2615 | |
2616 __ stop("Bad state"); | |
2617 | |
2618 __ bind(Done); | |
2619 | |
2620 // Check for volatile store | |
2621 __ testl(rdx, rdx); | |
2622 __ jcc(Assembler::zero, notVolatile); | |
304 | 2623 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | |
2624 Assembler::StoreStore)); | |
0 | 2625 __ bind(notVolatile); |
2626 } | |
2627 | |
2628 | |
2629 void TemplateTable::putfield(int byte_no) { | |
2630 putfield_or_static(byte_no, false); | |
2631 } | |
2632 | |
2633 | |
2634 void TemplateTable::putstatic(int byte_no) { | |
2635 putfield_or_static(byte_no, true); | |
2636 } | |
2637 | |
2638 void TemplateTable::jvmti_post_fast_field_mod() { | |
2639 if (JvmtiExport::can_post_field_modification()) { | |
2640 // Check to see if a field modification watch has been set before we take | |
2641 // the time to call into the VM. | |
2642 Label L2; | |
2643 __ mov32(rcx, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
2644 __ testl(rcx,rcx); | |
2645 __ jcc(Assembler::zero, L2); | |
2646 __ pop_ptr(rbx); // copy the object pointer from tos | |
2647 __ verify_oop(rbx); | |
2648 __ push_ptr(rbx); // put the object pointer back on tos | |
304 | 2649 __ subptr(rsp, sizeof(jvalue)); // add space for a jvalue object |
2650 __ mov(rcx, rsp); | |
0 | 2651 __ push_ptr(rbx); // save object pointer so we can steal rbx, |
304 | 2652 __ xorptr(rbx, rbx); |
0 | 2653 const Address lo_value(rcx, rbx, Address::times_1, 0*wordSize); |
2654 const Address hi_value(rcx, rbx, Address::times_1, 1*wordSize); | |
2655 switch (bytecode()) { // load values into the jvalue object | |
2656 case Bytecodes::_fast_bputfield: __ movb(lo_value, rax); break; | |
2657 case Bytecodes::_fast_sputfield: __ movw(lo_value, rax); break; | |
2658 case Bytecodes::_fast_cputfield: __ movw(lo_value, rax); break; | |
2659 case Bytecodes::_fast_iputfield: __ movl(lo_value, rax); break; | |
304 | 2660 case Bytecodes::_fast_lputfield: |
2661 NOT_LP64(__ movptr(hi_value, rdx)); | |
2662 __ movptr(lo_value, rax); | |
2663 break; | |
2664 | |
0 | 2665 // need to call fld_s() after fstp_s() to restore the value for below |
2666 case Bytecodes::_fast_fputfield: __ fstp_s(lo_value); __ fld_s(lo_value); break; | |
304 | 2667 |
0 | 2668 // need to call fld_d() after fstp_d() to restore the value for below |
2669 case Bytecodes::_fast_dputfield: __ fstp_d(lo_value); __ fld_d(lo_value); break; | |
304 | 2670 |
0 | 2671 // since rcx is not an object we don't call store_check() here |
304 | 2672 case Bytecodes::_fast_aputfield: __ movptr(lo_value, rax); break; |
2673 | |
0 | 2674 default: ShouldNotReachHere(); |
2675 } | |
2676 __ pop_ptr(rbx); // restore copy of object pointer | |
2677 | |
2678 // Save rax, and sometimes rdx because call_VM() will clobber them, | |
2679 // then use them for JVM/DI purposes | |
304 | 2680 __ push(rax); |
2681 if (bytecode() == Bytecodes::_fast_lputfield) __ push(rdx); | |
0 | 2682 // access constant pool cache entry |
2683 __ get_cache_entry_pointer_at_bcp(rax, rdx, 1); | |
2684 __ verify_oop(rbx); | |
2685 // rbx,: object pointer copied above | |
2686 // rax,: cache entry pointer | |
2687 // rcx: jvalue object on the stack | |
2688 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), rbx, rax, rcx); | |
304 | 2689 if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx); // restore high value |
2690 __ pop(rax); // restore lower value | |
2691 __ addptr(rsp, sizeof(jvalue)); // release jvalue object space | |
0 | 2692 __ bind(L2); |
2693 } | |
2694 } | |
2695 | |
2696 void TemplateTable::fast_storefield(TosState state) { | |
2697 transition(state, vtos); | |
2698 | |
2699 ByteSize base = constantPoolCacheOopDesc::base_offset(); | |
2700 | |
2701 jvmti_post_fast_field_mod(); | |
2702 | |
2703 // access constant pool cache | |
2704 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2705 | |
2706 // test for volatile with rdx but rdx is tos register for lputfield. | |
304 | 2707 if (bytecode() == Bytecodes::_fast_lputfield) __ push(rdx); |
2708 __ movl(rdx, Address(rcx, rbx, Address::times_ptr, in_bytes(base + | |
0 | 2709 ConstantPoolCacheEntry::flags_offset()))); |
2710 | |
2711 // replace index with field offset from cache entry | |
304 | 2712 __ movptr(rbx, Address(rcx, rbx, Address::times_ptr, in_bytes(base + ConstantPoolCacheEntry::f2_offset()))); |
0 | 2713 |
2714 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). | |
2715 // volatile_barrier( ); | |
2716 | |
2717 Label notVolatile, Done; | |
2718 __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2719 __ andl(rdx, 0x1); | |
2720 // Check for volatile store | |
2721 __ testl(rdx, rdx); | |
2722 __ jcc(Assembler::zero, notVolatile); | |
2723 | |
304 | 2724 if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx); |
0 | 2725 |
2726 // Get object from stack | |
2727 pop_and_check_object(rcx); | |
2728 | |
2729 // field addresses | |
2730 const Address lo(rcx, rbx, Address::times_1, 0*wordSize); | |
2731 const Address hi(rcx, rbx, Address::times_1, 1*wordSize); | |
2732 | |
2733 // access field | |
2734 switch (bytecode()) { | |
2735 case Bytecodes::_fast_bputfield: __ movb(lo, rax); break; | |
2736 case Bytecodes::_fast_sputfield: // fall through | |
2737 case Bytecodes::_fast_cputfield: __ movw(lo, rax); break; | |
2738 case Bytecodes::_fast_iputfield: __ movl(lo, rax); break; | |
304 | 2739 case Bytecodes::_fast_lputfield: |
2740 NOT_LP64(__ movptr(hi, rdx)); | |
2741 __ movptr(lo, rax); | |
2742 break; | |
0 | 2743 case Bytecodes::_fast_fputfield: __ fstp_s(lo); break; |
2744 case Bytecodes::_fast_dputfield: __ fstp_d(lo); break; | |
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2745 case Bytecodes::_fast_aputfield: { |
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2746 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
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2747 break; |
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2748 } |
0 | 2749 default: |
2750 ShouldNotReachHere(); | |
2751 } | |
2752 | |
2753 Label done; | |
304 | 2754 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | |
2755 Assembler::StoreStore)); | |
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2756 // Barriers are so large that short branch doesn't reach! |
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2757 __ jmp(done); |
0 | 2758 |
2759 // Same code as above, but don't need rdx to test for volatile. | |
2760 __ bind(notVolatile); | |
2761 | |
304 | 2762 if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx); |
0 | 2763 |
2764 // Get object from stack | |
2765 pop_and_check_object(rcx); | |
2766 | |
2767 // access field | |
2768 switch (bytecode()) { | |
2769 case Bytecodes::_fast_bputfield: __ movb(lo, rax); break; | |
2770 case Bytecodes::_fast_sputfield: // fall through | |
2771 case Bytecodes::_fast_cputfield: __ movw(lo, rax); break; | |
2772 case Bytecodes::_fast_iputfield: __ movl(lo, rax); break; | |
304 | 2773 case Bytecodes::_fast_lputfield: |
2774 NOT_LP64(__ movptr(hi, rdx)); | |
2775 __ movptr(lo, rax); | |
2776 break; | |
0 | 2777 case Bytecodes::_fast_fputfield: __ fstp_s(lo); break; |
2778 case Bytecodes::_fast_dputfield: __ fstp_d(lo); break; | |
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2779 case Bytecodes::_fast_aputfield: { |
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2780 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
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2781 break; |
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2782 } |
0 | 2783 default: |
2784 ShouldNotReachHere(); | |
2785 } | |
2786 __ bind(done); | |
2787 } | |
2788 | |
2789 | |
2790 void TemplateTable::fast_accessfield(TosState state) { | |
2791 transition(atos, state); | |
2792 | |
2793 // do the JVMTI work here to avoid disturbing the register state below | |
2794 if (JvmtiExport::can_post_field_access()) { | |
2795 // Check to see if a field access watch has been set before we take | |
2796 // the time to call into the VM. | |
2797 Label L1; | |
2798 __ mov32(rcx, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2799 __ testl(rcx,rcx); | |
2800 __ jcc(Assembler::zero, L1); | |
2801 // access constant pool cache entry | |
2802 __ get_cache_entry_pointer_at_bcp(rcx, rdx, 1); | |
2803 __ push_ptr(rax); // save object pointer before call_VM() clobbers it | |
2804 __ verify_oop(rax); | |
2805 // rax,: object pointer copied above | |
2806 // rcx: cache entry pointer | |
2807 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), rax, rcx); | |
2808 __ pop_ptr(rax); // restore object pointer | |
2809 __ bind(L1); | |
2810 } | |
2811 | |
2812 // access constant pool cache | |
2813 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2814 // replace index with field offset from cache entry | |
304 | 2815 __ movptr(rbx, Address(rcx, |
2816 rbx, | |
2817 Address::times_ptr, | |
2818 in_bytes(constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2819 |
2820 | |
2821 // rax,: object | |
2822 __ verify_oop(rax); | |
2823 __ null_check(rax); | |
2824 // field addresses | |
2825 const Address lo = Address(rax, rbx, Address::times_1, 0*wordSize); | |
2826 const Address hi = Address(rax, rbx, Address::times_1, 1*wordSize); | |
2827 | |
2828 // access field | |
2829 switch (bytecode()) { | |
304 | 2830 case Bytecodes::_fast_bgetfield: __ movsbl(rax, lo ); break; |
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2831 case Bytecodes::_fast_sgetfield: __ load_signed_short(rax, lo ); break; |
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2832 case Bytecodes::_fast_cgetfield: __ load_unsigned_short(rax, lo ); break; |
0 | 2833 case Bytecodes::_fast_igetfield: __ movl(rax, lo); break; |
2834 case Bytecodes::_fast_lgetfield: __ stop("should not be rewritten"); break; | |
2835 case Bytecodes::_fast_fgetfield: __ fld_s(lo); break; | |
2836 case Bytecodes::_fast_dgetfield: __ fld_d(lo); break; | |
304 | 2837 case Bytecodes::_fast_agetfield: __ movptr(rax, lo); __ verify_oop(rax); break; |
0 | 2838 default: |
2839 ShouldNotReachHere(); | |
2840 } | |
2841 | |
2842 // Doug Lea believes this is not needed with current Sparcs(TSO) and Intel(PSO) | |
2843 // volatile_barrier( ); | |
2844 } | |
2845 | |
2846 void TemplateTable::fast_xaccess(TosState state) { | |
2847 transition(vtos, state); | |
2848 // get receiver | |
304 | 2849 __ movptr(rax, aaddress(0)); |
0 | 2850 // access constant pool cache |
2851 __ get_cache_and_index_at_bcp(rcx, rdx, 2); | |
304 | 2852 __ movptr(rbx, Address(rcx, |
2853 rdx, | |
2854 Address::times_ptr, | |
2855 in_bytes(constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2856 // make sure exception is reported in correct bcp range (getfield is next instruction) |
2857 __ increment(rsi); | |
2858 __ null_check(rax); | |
2859 const Address lo = Address(rax, rbx, Address::times_1, 0*wordSize); | |
2860 if (state == itos) { | |
2861 __ movl(rax, lo); | |
2862 } else if (state == atos) { | |
304 | 2863 __ movptr(rax, lo); |
0 | 2864 __ verify_oop(rax); |
2865 } else if (state == ftos) { | |
2866 __ fld_s(lo); | |
2867 } else { | |
2868 ShouldNotReachHere(); | |
2869 } | |
2870 __ decrement(rsi); | |
2871 } | |
2872 | |
2873 | |
2874 | |
2875 //---------------------------------------------------------------------------------------------------- | |
2876 // Calls | |
2877 | |
2878 void TemplateTable::count_calls(Register method, Register temp) { | |
2879 // implemented elsewhere | |
2880 ShouldNotReachHere(); | |
2881 } | |
2882 | |
2883 | |
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2884 void TemplateTable::prepare_invoke(Register method, Register index, int byte_no) { |
0 | 2885 // determine flags |
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2886 Bytecodes::Code code = bytecode(); |
0 | 2887 const bool is_invokeinterface = code == Bytecodes::_invokeinterface; |
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2888 const bool is_invokedynamic = code == Bytecodes::_invokedynamic; |
0 | 2889 const bool is_invokevirtual = code == Bytecodes::_invokevirtual; |
2890 const bool is_invokespecial = code == Bytecodes::_invokespecial; | |
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2891 const bool load_receiver = (code != Bytecodes::_invokestatic && code != Bytecodes::_invokedynamic); |
0 | 2892 const bool receiver_null_check = is_invokespecial; |
2893 const bool save_flags = is_invokeinterface || is_invokevirtual; | |
2894 // setup registers & access constant pool cache | |
2895 const Register recv = rcx; | |
2896 const Register flags = rdx; | |
2897 assert_different_registers(method, index, recv, flags); | |
2898 | |
2899 // save 'interpreter return address' | |
2900 __ save_bcp(); | |
2901 | |
1565 | 2902 load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual, false, is_invokedynamic); |
0 | 2903 |
2904 // load receiver if needed (note: no return address pushed yet) | |
2905 if (load_receiver) { | |
1565 | 2906 assert(!is_invokedynamic, ""); |
0 | 2907 __ movl(recv, flags); |
2908 __ andl(recv, 0xFF); | |
2909 // recv count is 0 based? | |
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2910 Address recv_addr(rsp, recv, Interpreter::stackElementScale(), -Interpreter::expr_offset_in_bytes(1)); |
1304 | 2911 __ movptr(recv, recv_addr); |
2912 __ verify_oop(recv); | |
0 | 2913 } |
2914 | |
2915 // do null check if needed | |
2916 if (receiver_null_check) { | |
2917 __ null_check(recv); | |
2918 } | |
2919 | |
2920 if (save_flags) { | |
304 | 2921 __ mov(rsi, flags); |
0 | 2922 } |
2923 | |
2924 // compute return type | |
2925 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2926 // Make sure we don't need to mask flags for tosBits after the above shift | |
2927 ConstantPoolCacheEntry::verify_tosBits(); | |
2928 // load return address | |
304 | 2929 { |
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2930 address table_addr; |
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2931 if (is_invokeinterface || is_invokedynamic) |
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2932 table_addr = (address)Interpreter::return_5_addrs_by_index_table(); |
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2933 else |
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2934 table_addr = (address)Interpreter::return_3_addrs_by_index_table(); |
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2935 ExternalAddress table(table_addr); |
304 | 2936 __ movptr(flags, ArrayAddress(table, Address(noreg, flags, Address::times_ptr))); |
0 | 2937 } |
2938 | |
2939 // push return address | |
304 | 2940 __ push(flags); |
0 | 2941 |
2942 // Restore flag value from the constant pool cache, and restore rsi | |
2943 // for later null checks. rsi is the bytecode pointer | |
2944 if (save_flags) { | |
304 | 2945 __ mov(flags, rsi); |
0 | 2946 __ restore_bcp(); |
2947 } | |
2948 } | |
2949 | |
2950 | |
2951 void TemplateTable::invokevirtual_helper(Register index, Register recv, | |
2952 Register flags) { | |
2953 | |
2954 // Uses temporary registers rax, rdx | |
2955 assert_different_registers(index, recv, rax, rdx); | |
2956 | |
2957 // Test for an invoke of a final method | |
2958 Label notFinal; | |
2959 __ movl(rax, flags); | |
2960 __ andl(rax, (1 << ConstantPoolCacheEntry::vfinalMethod)); | |
2961 __ jcc(Assembler::zero, notFinal); | |
2962 | |
2963 Register method = index; // method must be rbx, | |
2964 assert(method == rbx, "methodOop must be rbx, for interpreter calling convention"); | |
2965 | |
2966 // do the call - the index is actually the method to call | |
2967 __ verify_oop(method); | |
2968 | |
2969 // It's final, need a null check here! | |
2970 __ null_check(recv); | |
2971 | |
2972 // profile this call | |
2973 __ profile_final_call(rax); | |
2974 | |
2975 __ jump_from_interpreted(method, rax); | |
2976 | |
2977 __ bind(notFinal); | |
2978 | |
2979 // get receiver klass | |
2980 __ null_check(recv, oopDesc::klass_offset_in_bytes()); | |
2981 // Keep recv in rcx for callee expects it there | |
304 | 2982 __ movptr(rax, Address(recv, oopDesc::klass_offset_in_bytes())); |
0 | 2983 __ verify_oop(rax); |
2984 | |
2985 // profile this call | |
2986 __ profile_virtual_call(rax, rdi, rdx); | |
2987 | |
2988 // get target methodOop & entry point | |
2989 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
2990 assert(vtableEntry::size() * wordSize == 4, "adjust the scaling in the code below"); | |
304 | 2991 __ movptr(method, Address(rax, index, Address::times_ptr, base + vtableEntry::method_offset_in_bytes())); |
0 | 2992 __ jump_from_interpreted(method, rdx); |
2993 } | |
2994 | |
2995 | |
2996 void TemplateTable::invokevirtual(int byte_no) { | |
2997 transition(vtos, vtos); | |
1565 | 2998 assert(byte_no == f2_byte, "use this argument"); |
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2999 prepare_invoke(rbx, noreg, byte_no); |
0 | 3000 |
3001 // rbx,: index | |
3002 // rcx: receiver | |
3003 // rdx: flags | |
3004 | |
3005 invokevirtual_helper(rbx, rcx, rdx); | |
3006 } | |
3007 | |
3008 | |
3009 void TemplateTable::invokespecial(int byte_no) { | |
3010 transition(vtos, vtos); | |
1565 | 3011 assert(byte_no == f1_byte, "use this argument"); |
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3012 prepare_invoke(rbx, noreg, byte_no); |
0 | 3013 // do the call |
3014 __ verify_oop(rbx); | |
3015 __ profile_call(rax); | |
3016 __ jump_from_interpreted(rbx, rax); | |
3017 } | |
3018 | |
3019 | |
3020 void TemplateTable::invokestatic(int byte_no) { | |
3021 transition(vtos, vtos); | |
1565 | 3022 assert(byte_no == f1_byte, "use this argument"); |
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3023 prepare_invoke(rbx, noreg, byte_no); |
0 | 3024 // do the call |
3025 __ verify_oop(rbx); | |
3026 __ profile_call(rax); | |
3027 __ jump_from_interpreted(rbx, rax); | |
3028 } | |
3029 | |
3030 | |
3031 void TemplateTable::fast_invokevfinal(int byte_no) { | |
3032 transition(vtos, vtos); | |
1565 | 3033 assert(byte_no == f2_byte, "use this argument"); |
0 | 3034 __ stop("fast_invokevfinal not used on x86"); |
3035 } | |
3036 | |
3037 | |
3038 void TemplateTable::invokeinterface(int byte_no) { | |
3039 transition(vtos, vtos); | |
1565 | 3040 assert(byte_no == f1_byte, "use this argument"); |
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3041 prepare_invoke(rax, rbx, byte_no); |
0 | 3042 |
3043 // rax,: Interface | |
3044 // rbx,: index | |
3045 // rcx: receiver | |
3046 // rdx: flags | |
3047 | |
3048 // Special case of invokeinterface called for virtual method of | |
3049 // java.lang.Object. See cpCacheOop.cpp for details. | |
3050 // This code isn't produced by javac, but could be produced by | |
3051 // another compliant java compiler. | |
3052 Label notMethod; | |
3053 __ movl(rdi, rdx); | |
3054 __ andl(rdi, (1 << ConstantPoolCacheEntry::methodInterface)); | |
3055 __ jcc(Assembler::zero, notMethod); | |
3056 | |
3057 invokevirtual_helper(rbx, rcx, rdx); | |
3058 __ bind(notMethod); | |
3059 | |
3060 // Get receiver klass into rdx - also a null check | |
3061 __ restore_locals(); // restore rdi | |
304 | 3062 __ movptr(rdx, Address(rcx, oopDesc::klass_offset_in_bytes())); |
0 | 3063 __ verify_oop(rdx); |
3064 | |
3065 // profile this call | |
3066 __ profile_virtual_call(rdx, rsi, rdi); | |
3067 | |
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3068 Label no_such_interface, no_such_method; |
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3069 |
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3070 __ lookup_interface_method(// inputs: rec. class, interface, itable index |
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3071 rdx, rax, rbx, |
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3072 // outputs: method, scan temp. reg |
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3073 rbx, rsi, |
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3074 no_such_interface); |
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3075 |
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3076 // rbx,: methodOop to call |
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3077 // rcx: receiver |
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3078 // Check for abstract method error |
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3079 // Note: This should be done more efficiently via a throw_abstract_method_error |
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3080 // interpreter entry point and a conditional jump to it in case of a null |
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3081 // method. |
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3082 __ testptr(rbx, rbx); |
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3083 __ jcc(Assembler::zero, no_such_method); |
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3084 |
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3085 // do the call |
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3086 // rcx: receiver |
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3087 // rbx,: methodOop |
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3088 __ jump_from_interpreted(rbx, rdx); |
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3089 __ should_not_reach_here(); |
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3090 |
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3091 // exception handling code follows... |
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3092 // note: must restore interpreter registers to canonical |
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3093 // state for exception handling to work correctly! |
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3094 |
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3095 __ bind(no_such_method); |
0 | 3096 // throw exception |
623
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3097 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
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3098 __ restore_bcp(); // rsi must be correct for exception handler (was destroyed) |
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3099 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
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3100 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError)); |
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3101 // the call_VM checks for exception, so we should never return here. |
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3102 __ should_not_reach_here(); |
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3103 |
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3104 __ bind(no_such_interface); |
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3105 // throw exception |
304 | 3106 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
0 | 3107 __ restore_bcp(); // rsi must be correct for exception handler (was destroyed) |
3108 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) | |
3109 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
3110 InterpreterRuntime::throw_IncompatibleClassChangeError)); | |
3111 // the call_VM checks for exception, so we should never return here. | |
3112 __ should_not_reach_here(); | |
3113 } | |
3114 | |
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3115 void TemplateTable::invokedynamic(int byte_no) { |
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3116 transition(vtos, vtos); |
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3117 |
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3118 if (!EnableInvokeDynamic) { |
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3119 // We should not encounter this bytecode if !EnableInvokeDynamic. |
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3120 // The verifier will stop it. However, if we get past the verifier, |
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3121 // this will stop the thread in a reasonable way, without crashing the JVM. |
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3122 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
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3123 InterpreterRuntime::throw_IncompatibleClassChangeError)); |
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3124 // the call_VM checks for exception, so we should never return here. |
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3125 __ should_not_reach_here(); |
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3126 return; |
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3127 } |
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3128 |
1565 | 3129 assert(byte_no == f1_oop, "use this argument"); |
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3130 prepare_invoke(rax, rbx, byte_no); |
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3131 |
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3132 // rax: CallSite object (f1) |
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3133 // rbx: unused (f2) |
1846 | 3134 // rcx: receiver address |
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3135 // rdx: flags (unused) |
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3136 |
1846 | 3137 Register rax_callsite = rax; |
3138 Register rcx_method_handle = rcx; | |
3139 | |
726
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3140 if (ProfileInterpreter) { |
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3141 // %%% should make a type profile for any invokedynamic that takes a ref argument |
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3142 // profile this call |
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3143 __ profile_call(rsi); |
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3144 } |
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3145 |
1846 | 3146 __ movptr(rcx_method_handle, Address(rax_callsite, __ delayed_value(java_dyn_CallSite::target_offset_in_bytes, rcx))); |
3147 __ null_check(rcx_method_handle); | |
726
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3148 __ prepare_to_jump_from_interpreted(); |
1846 | 3149 __ jump_to_method_handle_entry(rcx_method_handle, rdx); |
726
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3150 } |
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3151 |
0 | 3152 //---------------------------------------------------------------------------------------------------- |
3153 // Allocation | |
3154 | |
3155 void TemplateTable::_new() { | |
3156 transition(vtos, atos); | |
3157 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3158 Label slow_case; | |
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3159 Label slow_case_no_pop; |
0 | 3160 Label done; |
3161 Label initialize_header; | |
3162 Label initialize_object; // including clearing the fields | |
3163 Label allocate_shared; | |
3164 | |
3165 __ get_cpool_and_tags(rcx, rax); | |
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3166 |
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3167 // Make sure the class we're about to instantiate has been resolved. |
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3168 // This is done before loading instanceKlass to be consistent with the order |
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3169 // how Constant Pool is updated (see constantPoolOopDesc::klass_at_put) |
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3170 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; |
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3171 __ cmpb(Address(rax, rdx, Address::times_1, tags_offset), JVM_CONSTANT_Class); |
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3172 __ jcc(Assembler::notEqual, slow_case_no_pop); |
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3173 |
0 | 3174 // get instanceKlass |
304 | 3175 __ movptr(rcx, Address(rcx, rdx, Address::times_ptr, sizeof(constantPoolOopDesc))); |
3176 __ push(rcx); // save the contexts of klass for initializing the header | |
0 | 3177 |
3178 // make sure klass is initialized & doesn't have finalizer | |
3179 // make sure klass is fully initialized | |
3180 __ cmpl(Address(rcx, instanceKlass::init_state_offset_in_bytes() + sizeof(oopDesc)), instanceKlass::fully_initialized); | |
3181 __ jcc(Assembler::notEqual, slow_case); | |
3182 | |
3183 // get instance_size in instanceKlass (scaled to a count of bytes) | |
3184 __ movl(rdx, Address(rcx, Klass::layout_helper_offset_in_bytes() + sizeof(oopDesc))); | |
3185 // test to see if it has a finalizer or is malformed in some way | |
3186 __ testl(rdx, Klass::_lh_instance_slow_path_bit); | |
3187 __ jcc(Assembler::notZero, slow_case); | |
3188 | |
3189 // | |
3190 // Allocate the instance | |
3191 // 1) Try to allocate in the TLAB | |
3192 // 2) if fail and the object is large allocate in the shared Eden | |
3193 // 3) if the above fails (or is not applicable), go to a slow case | |
3194 // (creates a new TLAB, etc.) | |
3195 | |
3196 const bool allow_shared_alloc = | |
3197 Universe::heap()->supports_inline_contig_alloc() && !CMSIncrementalMode; | |
3198 | |
3199 if (UseTLAB) { | |
3200 const Register thread = rcx; | |
3201 | |
3202 __ get_thread(thread); | |
304 | 3203 __ movptr(rax, Address(thread, in_bytes(JavaThread::tlab_top_offset()))); |
3204 __ lea(rbx, Address(rax, rdx, Address::times_1)); | |
3205 __ cmpptr(rbx, Address(thread, in_bytes(JavaThread::tlab_end_offset()))); | |
0 | 3206 __ jcc(Assembler::above, allow_shared_alloc ? allocate_shared : slow_case); |
304 | 3207 __ movptr(Address(thread, in_bytes(JavaThread::tlab_top_offset())), rbx); |
0 | 3208 if (ZeroTLAB) { |
3209 // the fields have been already cleared | |
3210 __ jmp(initialize_header); | |
3211 } else { | |
3212 // initialize both the header and fields | |
3213 __ jmp(initialize_object); | |
3214 } | |
3215 } | |
3216 | |
3217 // Allocation in the shared Eden, if allowed. | |
3218 // | |
3219 // rdx: instance size in bytes | |
3220 if (allow_shared_alloc) { | |
3221 __ bind(allocate_shared); | |
3222 | |
342
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3223 ExternalAddress heap_top((address)Universe::heap()->top_addr()); |
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3224 |
0 | 3225 Label retry; |
3226 __ bind(retry); | |
304 | 3227 __ movptr(rax, heap_top); |
3228 __ lea(rbx, Address(rax, rdx, Address::times_1)); | |
3229 __ cmpptr(rbx, ExternalAddress((address)Universe::heap()->end_addr())); | |
0 | 3230 __ jcc(Assembler::above, slow_case); |
3231 | |
3232 // Compare rax, with the top addr, and if still equal, store the new | |
3233 // top addr in rbx, at the address of the top addr pointer. Sets ZF if was | |
3234 // equal, and clears it otherwise. Use lock prefix for atomicity on MPs. | |
3235 // | |
3236 // rax,: object begin | |
3237 // rbx,: object end | |
3238 // rdx: instance size in bytes | |
304 | 3239 __ locked_cmpxchgptr(rbx, heap_top); |
0 | 3240 |
3241 // if someone beat us on the allocation, try again, otherwise continue | |
3242 __ jcc(Assembler::notEqual, retry); | |
3243 } | |
3244 | |
3245 if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) { | |
3246 // The object is initialized before the header. If the object size is | |
3247 // zero, go directly to the header initialization. | |
3248 __ bind(initialize_object); | |
3249 __ decrement(rdx, sizeof(oopDesc)); | |
3250 __ jcc(Assembler::zero, initialize_header); | |
3251 | |
3252 // Initialize topmost object field, divide rdx by 8, check if odd and | |
3253 // test if zero. | |
3254 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) | |
3255 __ shrl(rdx, LogBytesPerLong); // divide by 2*oopSize and set carry flag if odd | |
3256 | |
3257 // rdx must have been multiple of 8 | |
3258 #ifdef ASSERT | |
3259 // make sure rdx was multiple of 8 | |
3260 Label L; | |
3261 // Ignore partial flag stall after shrl() since it is debug VM | |
3262 __ jccb(Assembler::carryClear, L); | |
3263 __ stop("object size is not multiple of 2 - adjust this code"); | |
3264 __ bind(L); | |
3265 // rdx must be > 0, no extra check needed here | |
3266 #endif | |
3267 | |
3268 // initialize remaining object fields: rdx was a multiple of 8 | |
3269 { Label loop; | |
3270 __ bind(loop); | |
304 | 3271 __ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 1*oopSize), rcx); |
3272 NOT_LP64(__ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 2*oopSize), rcx)); | |
0 | 3273 __ decrement(rdx); |
3274 __ jcc(Assembler::notZero, loop); | |
3275 } | |
3276 | |
3277 // initialize object header only. | |
3278 __ bind(initialize_header); | |
3279 if (UseBiasedLocking) { | |
304 | 3280 __ pop(rcx); // get saved klass back in the register. |
3281 __ movptr(rbx, Address(rcx, Klass::prototype_header_offset_in_bytes() + klassOopDesc::klass_part_offset_in_bytes())); | |
3282 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()), rbx); | |
0 | 3283 } else { |
304 | 3284 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()), |
3285 (int32_t)markOopDesc::prototype()); // header | |
3286 __ pop(rcx); // get saved klass back in the register. | |
0 | 3287 } |
304 | 3288 __ movptr(Address(rax, oopDesc::klass_offset_in_bytes()), rcx); // klass |
0 | 3289 |
3290 { | |
3291 SkipIfEqual skip_if(_masm, &DTraceAllocProbes, 0); | |
3292 // Trigger dtrace event for fastpath | |
3293 __ push(atos); | |
3294 __ call_VM_leaf( | |
3295 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), rax); | |
3296 __ pop(atos); | |
3297 } | |
3298 | |
3299 __ jmp(done); | |
3300 } | |
3301 | |
3302 // slow case | |
3303 __ bind(slow_case); | |
304 | 3304 __ pop(rcx); // restore stack pointer to what it was when we came in. |
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3305 __ bind(slow_case_no_pop); |
0 | 3306 __ get_constant_pool(rax); |
3307 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3308 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), rax, rdx); | |
3309 | |
3310 // continue | |
3311 __ bind(done); | |
3312 } | |
3313 | |
3314 | |
3315 void TemplateTable::newarray() { | |
3316 transition(itos, atos); | |
3317 __ push_i(rax); // make sure everything is on the stack | |
3318 __ load_unsigned_byte(rdx, at_bcp(1)); | |
3319 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray), rdx, rax); | |
3320 __ pop_i(rdx); // discard size | |
3321 } | |
3322 | |
3323 | |
3324 void TemplateTable::anewarray() { | |
3325 transition(itos, atos); | |
3326 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3327 __ get_constant_pool(rcx); | |
3328 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray), rcx, rdx, rax); | |
3329 } | |
3330 | |
3331 | |
3332 void TemplateTable::arraylength() { | |
3333 transition(atos, itos); | |
3334 __ null_check(rax, arrayOopDesc::length_offset_in_bytes()); | |
3335 __ movl(rax, Address(rax, arrayOopDesc::length_offset_in_bytes())); | |
3336 } | |
3337 | |
3338 | |
3339 void TemplateTable::checkcast() { | |
3340 transition(atos, atos); | |
3341 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3342 __ testptr(rax, rax); // Object is in EAX |
0 | 3343 __ jcc(Assembler::zero, is_null); |
3344 | |
3345 // Get cpool & tags index | |
3346 __ get_cpool_and_tags(rcx, rdx); // ECX=cpool, EDX=tags array | |
3347 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // EBX=index | |
3348 // See if bytecode has already been quicked | |
3349 __ cmpb(Address(rdx, rbx, Address::times_1, typeArrayOopDesc::header_size(T_BYTE) * wordSize), JVM_CONSTANT_Class); | |
3350 __ jcc(Assembler::equal, quicked); | |
3351 | |
3352 __ push(atos); | |
3353 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) ); | |
3354 __ pop_ptr(rdx); | |
3355 __ jmpb(resolved); | |
3356 | |
3357 // Get superklass in EAX and subklass in EBX | |
3358 __ bind(quicked); | |
304 | 3359 __ mov(rdx, rax); // Save object in EDX; EAX needed for subtype check |
3360 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, sizeof(constantPoolOopDesc))); | |
0 | 3361 |
3362 __ bind(resolved); | |
304 | 3363 __ movptr(rbx, Address(rdx, oopDesc::klass_offset_in_bytes())); |
0 | 3364 |
3365 // Generate subtype check. Blows ECX. Resets EDI. Object in EDX. | |
3366 // Superklass in EAX. Subklass in EBX. | |
3367 __ gen_subtype_check( rbx, ok_is_subtype ); | |
3368 | |
3369 // Come here on failure | |
304 | 3370 __ push(rdx); |
0 | 3371 // object is at TOS |
3372 __ jump(ExternalAddress(Interpreter::_throw_ClassCastException_entry)); | |
3373 | |
3374 // Come here on success | |
3375 __ bind(ok_is_subtype); | |
304 | 3376 __ mov(rax,rdx); // Restore object in EDX |
0 | 3377 |
3378 // Collect counts on whether this check-cast sees NULLs a lot or not. | |
3379 if (ProfileInterpreter) { | |
3380 __ jmp(done); | |
3381 __ bind(is_null); | |
3382 __ profile_null_seen(rcx); | |
3383 } else { | |
3384 __ bind(is_null); // same as 'done' | |
3385 } | |
3386 __ bind(done); | |
3387 } | |
3388 | |
3389 | |
3390 void TemplateTable::instanceof() { | |
3391 transition(atos, itos); | |
3392 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3393 __ testptr(rax, rax); |
0 | 3394 __ jcc(Assembler::zero, is_null); |
3395 | |
3396 // Get cpool & tags index | |
3397 __ get_cpool_and_tags(rcx, rdx); // ECX=cpool, EDX=tags array | |
3398 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // EBX=index | |
3399 // See if bytecode has already been quicked | |
3400 __ cmpb(Address(rdx, rbx, Address::times_1, typeArrayOopDesc::header_size(T_BYTE) * wordSize), JVM_CONSTANT_Class); | |
3401 __ jcc(Assembler::equal, quicked); | |
3402 | |
3403 __ push(atos); | |
3404 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) ); | |
3405 __ pop_ptr(rdx); | |
304 | 3406 __ movptr(rdx, Address(rdx, oopDesc::klass_offset_in_bytes())); |
0 | 3407 __ jmp(resolved); |
3408 | |
3409 // Get superklass in EAX and subklass in EDX | |
3410 __ bind(quicked); | |
304 | 3411 __ movptr(rdx, Address(rax, oopDesc::klass_offset_in_bytes())); |
3412 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, sizeof(constantPoolOopDesc))); | |
0 | 3413 |
3414 __ bind(resolved); | |
3415 | |
3416 // Generate subtype check. Blows ECX. Resets EDI. | |
3417 // Superklass in EAX. Subklass in EDX. | |
3418 __ gen_subtype_check( rdx, ok_is_subtype ); | |
3419 | |
3420 // Come here on failure | |
3421 __ xorl(rax,rax); | |
3422 __ jmpb(done); | |
3423 // Come here on success | |
3424 __ bind(ok_is_subtype); | |
3425 __ movl(rax, 1); | |
3426 | |
3427 // Collect counts on whether this test sees NULLs a lot or not. | |
3428 if (ProfileInterpreter) { | |
3429 __ jmp(done); | |
3430 __ bind(is_null); | |
3431 __ profile_null_seen(rcx); | |
3432 } else { | |
3433 __ bind(is_null); // same as 'done' | |
3434 } | |
3435 __ bind(done); | |
3436 // rax, = 0: obj == NULL or obj is not an instanceof the specified klass | |
3437 // rax, = 1: obj != NULL and obj is an instanceof the specified klass | |
3438 } | |
3439 | |
3440 | |
3441 //---------------------------------------------------------------------------------------------------- | |
3442 // Breakpoints | |
3443 void TemplateTable::_breakpoint() { | |
3444 | |
3445 // Note: We get here even if we are single stepping.. | |
3446 // jbug inists on setting breakpoints at every bytecode | |
3447 // even if we are in single step mode. | |
3448 | |
3449 transition(vtos, vtos); | |
3450 | |
3451 // get the unpatched byte code | |
3452 __ get_method(rcx); | |
3453 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::get_original_bytecode_at), rcx, rsi); | |
304 | 3454 __ mov(rbx, rax); |
0 | 3455 |
3456 // post the breakpoint event | |
3457 __ get_method(rcx); | |
3458 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint), rcx, rsi); | |
3459 | |
3460 // complete the execution of original bytecode | |
3461 __ dispatch_only_normal(vtos); | |
3462 } | |
3463 | |
3464 | |
3465 //---------------------------------------------------------------------------------------------------- | |
3466 // Exceptions | |
3467 | |
3468 void TemplateTable::athrow() { | |
3469 transition(atos, vtos); | |
3470 __ null_check(rax); | |
3471 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
3472 } | |
3473 | |
3474 | |
3475 //---------------------------------------------------------------------------------------------------- | |
3476 // Synchronization | |
3477 // | |
3478 // Note: monitorenter & exit are symmetric routines; which is reflected | |
3479 // in the assembly code structure as well | |
3480 // | |
3481 // Stack layout: | |
3482 // | |
3483 // [expressions ] <--- rsp = expression stack top | |
3484 // .. | |
3485 // [expressions ] | |
3486 // [monitor entry] <--- monitor block top = expression stack bot | |
3487 // .. | |
3488 // [monitor entry] | |
3489 // [frame data ] <--- monitor block bot | |
3490 // ... | |
3491 // [saved rbp, ] <--- rbp, | |
3492 | |
3493 | |
3494 void TemplateTable::monitorenter() { | |
3495 transition(atos, vtos); | |
3496 | |
3497 // check for NULL object | |
3498 __ null_check(rax); | |
3499 | |
3500 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3501 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3502 const int entry_size = ( frame::interpreter_frame_monitor_size() * wordSize); | |
3503 Label allocated; | |
3504 | |
3505 // initialize entry pointer | |
3506 __ xorl(rdx, rdx); // points to free slot or NULL | |
3507 | |
3508 // find a free slot in the monitor block (result in rdx) | |
3509 { Label entry, loop, exit; | |
304 | 3510 __ movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry |
3511 __ lea(rbx, monitor_block_bot); // points to word before bottom of monitor block | |
0 | 3512 __ jmpb(entry); |
3513 | |
3514 __ bind(loop); | |
304 | 3515 __ cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used |
0 | 3516 |
3517 // TODO - need new func here - kbt | |
3518 if (VM_Version::supports_cmov()) { | |
304 | 3519 __ cmov(Assembler::equal, rdx, rcx); // if not used then remember entry in rdx |
0 | 3520 } else { |
3521 Label L; | |
3522 __ jccb(Assembler::notEqual, L); | |
304 | 3523 __ mov(rdx, rcx); // if not used then remember entry in rdx |
0 | 3524 __ bind(L); |
3525 } | |
304 | 3526 __ cmpptr(rax, Address(rcx, BasicObjectLock::obj_offset_in_bytes())); // check if current entry is for same object |
3527 __ jccb(Assembler::equal, exit); // if same object then stop searching | |
3528 __ addptr(rcx, entry_size); // otherwise advance to next entry | |
0 | 3529 __ bind(entry); |
304 | 3530 __ cmpptr(rcx, rbx); // check if bottom reached |
0 | 3531 __ jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
3532 __ bind(exit); | |
3533 } | |
3534 | |
304 | 3535 __ testptr(rdx, rdx); // check if a slot has been found |
3536 __ jccb(Assembler::notZero, allocated); // if found, continue with that one | |
0 | 3537 |
3538 // allocate one if there's no free slot | |
3539 { Label entry, loop; | |
3540 // 1. compute new pointers // rsp: old expression stack top | |
304 | 3541 __ movptr(rdx, monitor_block_bot); // rdx: old expression stack bottom |
3542 __ subptr(rsp, entry_size); // move expression stack top | |
3543 __ subptr(rdx, entry_size); // move expression stack bottom | |
3544 __ mov(rcx, rsp); // set start value for copy loop | |
3545 __ movptr(monitor_block_bot, rdx); // set new monitor block top | |
0 | 3546 __ jmp(entry); |
3547 // 2. move expression stack contents | |
3548 __ bind(loop); | |
304 | 3549 __ movptr(rbx, Address(rcx, entry_size)); // load expression stack word from old location |
3550 __ movptr(Address(rcx, 0), rbx); // and store it at new location | |
3551 __ addptr(rcx, wordSize); // advance to next word | |
0 | 3552 __ bind(entry); |
304 | 3553 __ cmpptr(rcx, rdx); // check if bottom reached |
0 | 3554 __ jcc(Assembler::notEqual, loop); // if not at bottom then copy next word |
3555 } | |
3556 | |
3557 // call run-time routine | |
3558 // rdx: points to monitor entry | |
3559 __ bind(allocated); | |
3560 | |
3561 // Increment bcp to point to the next bytecode, so exception handling for async. exceptions work correctly. | |
3562 // The object has already been poped from the stack, so the expression stack looks correct. | |
3563 __ increment(rsi); | |
3564 | |
304 | 3565 __ movptr(Address(rdx, BasicObjectLock::obj_offset_in_bytes()), rax); // store object |
0 | 3566 __ lock_object(rdx); |
3567 | |
3568 // check to make sure this monitor doesn't cause stack overflow after locking | |
3569 __ save_bcp(); // in case of exception | |
3570 __ generate_stack_overflow_check(0); | |
3571 | |
3572 // The bcp has already been incremented. Just need to dispatch to next instruction. | |
3573 __ dispatch_next(vtos); | |
3574 } | |
3575 | |
3576 | |
3577 void TemplateTable::monitorexit() { | |
3578 transition(atos, vtos); | |
3579 | |
3580 // check for NULL object | |
3581 __ null_check(rax); | |
3582 | |
3583 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3584 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3585 const int entry_size = ( frame::interpreter_frame_monitor_size() * wordSize); | |
3586 Label found; | |
3587 | |
3588 // find matching slot | |
3589 { Label entry, loop; | |
304 | 3590 __ movptr(rdx, monitor_block_top); // points to current entry, starting with top-most entry |
3591 __ lea(rbx, monitor_block_bot); // points to word before bottom of monitor block | |
0 | 3592 __ jmpb(entry); |
3593 | |
3594 __ bind(loop); | |
304 | 3595 __ cmpptr(rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); // check if current entry is for same object |
0 | 3596 __ jcc(Assembler::equal, found); // if same object then stop searching |
304 | 3597 __ addptr(rdx, entry_size); // otherwise advance to next entry |
0 | 3598 __ bind(entry); |
304 | 3599 __ cmpptr(rdx, rbx); // check if bottom reached |
0 | 3600 __ jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
3601 } | |
3602 | |
3603 // error handling. Unlocking was not block-structured | |
3604 Label end; | |
3605 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
3606 __ should_not_reach_here(); | |
3607 | |
3608 // call run-time routine | |
3609 // rcx: points to monitor entry | |
3610 __ bind(found); | |
3611 __ push_ptr(rax); // make sure object is on stack (contract with oopMaps) | |
3612 __ unlock_object(rdx); | |
3613 __ pop_ptr(rax); // discard object | |
3614 __ bind(end); | |
3615 } | |
3616 | |
3617 | |
3618 //---------------------------------------------------------------------------------------------------- | |
3619 // Wide instructions | |
3620 | |
3621 void TemplateTable::wide() { | |
3622 transition(vtos, vtos); | |
3623 __ load_unsigned_byte(rbx, at_bcp(1)); | |
304 | 3624 ExternalAddress wtable((address)Interpreter::_wentry_point); |
3625 __ jump(ArrayAddress(wtable, Address(noreg, rbx, Address::times_ptr))); | |
0 | 3626 // Note: the rsi increment step is part of the individual wide bytecode implementations |
3627 } | |
3628 | |
3629 | |
3630 //---------------------------------------------------------------------------------------------------- | |
3631 // Multi arrays | |
3632 | |
3633 void TemplateTable::multianewarray() { | |
3634 transition(vtos, atos); | |
3635 __ load_unsigned_byte(rax, at_bcp(3)); // get number of dimensions | |
3636 // last dim is on top of stack; we want address of first one: | |
3637 // first_addr = last_addr + (ndims - 1) * stackElementSize - 1*wordsize | |
3638 // the latter wordSize to point to the beginning of the array. | |
304 | 3639 __ lea( rax, Address(rsp, rax, Interpreter::stackElementScale(), -wordSize)); |
0 | 3640 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), rax); // pass in rax, |
3641 __ load_unsigned_byte(rbx, at_bcp(3)); | |
304 | 3642 __ lea(rsp, Address(rsp, rbx, Interpreter::stackElementScale())); // get rid of counts |
0 | 3643 } |
3644 | |
3645 #endif /* !CC_INTERP */ |