Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateTable_x86_64.cpp @ 6639:892ec0920ccd
Merge
author | vladidan |
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date | Wed, 08 Aug 2012 16:09:11 -0400 |
parents | 19e197e2a1af |
children | 1d7922586cf6 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 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 |
304 | 38 #ifndef CC_INTERP |
39 | |
0 | 40 #define __ _masm-> |
41 | |
42 // Platform-dependent initialization | |
43 | |
44 void TemplateTable::pd_initialize() { | |
45 // No amd64 specific initialization | |
46 } | |
47 | |
48 // Address computation: local variables | |
49 | |
50 static inline Address iaddress(int n) { | |
51 return Address(r14, Interpreter::local_offset_in_bytes(n)); | |
52 } | |
53 | |
54 static inline Address laddress(int n) { | |
55 return iaddress(n + 1); | |
56 } | |
57 | |
58 static inline Address faddress(int n) { | |
59 return iaddress(n); | |
60 } | |
61 | |
62 static inline Address daddress(int n) { | |
63 return laddress(n); | |
64 } | |
65 | |
66 static inline Address aaddress(int n) { | |
67 return iaddress(n); | |
68 } | |
69 | |
70 static inline Address iaddress(Register r) { | |
1506 | 71 return Address(r14, r, Address::times_8); |
0 | 72 } |
73 | |
74 static inline Address laddress(Register r) { | |
75 return Address(r14, r, Address::times_8, Interpreter::local_offset_in_bytes(1)); | |
76 } | |
77 | |
78 static inline Address faddress(Register r) { | |
79 return iaddress(r); | |
80 } | |
81 | |
82 static inline Address daddress(Register r) { | |
83 return laddress(r); | |
84 } | |
85 | |
86 static inline Address aaddress(Register r) { | |
87 return iaddress(r); | |
88 } | |
89 | |
90 static inline Address at_rsp() { | |
91 return Address(rsp, 0); | |
92 } | |
93 | |
94 // At top of Java expression stack which may be different than esp(). It | |
95 // isn't for category 1 objects. | |
96 static inline Address at_tos () { | |
97 return Address(rsp, Interpreter::expr_offset_in_bytes(0)); | |
98 } | |
99 | |
100 static inline Address at_tos_p1() { | |
101 return Address(rsp, Interpreter::expr_offset_in_bytes(1)); | |
102 } | |
103 | |
104 static inline Address at_tos_p2() { | |
105 return Address(rsp, Interpreter::expr_offset_in_bytes(2)); | |
106 } | |
107 | |
108 static inline Address at_tos_p3() { | |
109 return Address(rsp, Interpreter::expr_offset_in_bytes(3)); | |
110 } | |
111 | |
112 // Condition conversion | |
113 static Assembler::Condition j_not(TemplateTable::Condition cc) { | |
114 switch (cc) { | |
115 case TemplateTable::equal : return Assembler::notEqual; | |
116 case TemplateTable::not_equal : return Assembler::equal; | |
117 case TemplateTable::less : return Assembler::greaterEqual; | |
118 case TemplateTable::less_equal : return Assembler::greater; | |
119 case TemplateTable::greater : return Assembler::lessEqual; | |
120 case TemplateTable::greater_equal: return Assembler::less; | |
121 } | |
122 ShouldNotReachHere(); | |
123 return Assembler::zero; | |
124 } | |
125 | |
126 | |
127 // Miscelaneous helper routines | |
342
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128 // Store an oop (or NULL) at the address described by obj. |
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129 // If val == noreg this means store a NULL |
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130 |
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131 static void do_oop_store(InterpreterMacroAssembler* _masm, |
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132 Address obj, |
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133 Register val, |
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134 BarrierSet::Name barrier, |
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135 bool precise) { |
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136 assert(val == noreg || val == rax, "parameter is just for looks"); |
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137 switch (barrier) { |
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138 #ifndef SERIALGC |
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139 case BarrierSet::G1SATBCT: |
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140 case BarrierSet::G1SATBCTLogging: |
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141 { |
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142 // flatten object address if needed |
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143 if (obj.index() == noreg && obj.disp() == 0) { |
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144 if (obj.base() != rdx) { |
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145 __ movq(rdx, obj.base()); |
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146 } |
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147 } else { |
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148 __ leaq(rdx, obj); |
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149 } |
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150 __ g1_write_barrier_pre(rdx /* obj */, |
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151 rbx /* pre_val */, |
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152 r15_thread /* thread */, |
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153 r8 /* tmp */, |
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154 val != noreg /* tosca_live */, |
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155 false /* expand_call */); |
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156 if (val == noreg) { |
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157 __ store_heap_oop_null(Address(rdx, 0)); |
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158 } else { |
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159 __ store_heap_oop(Address(rdx, 0), val); |
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160 __ g1_write_barrier_post(rdx /* store_adr */, |
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161 val /* new_val */, |
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162 r15_thread /* thread */, |
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163 r8 /* tmp */, |
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164 rbx /* tmp2 */); |
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165 } |
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166 |
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167 } |
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168 break; |
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169 #endif // SERIALGC |
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170 case BarrierSet::CardTableModRef: |
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171 case BarrierSet::CardTableExtension: |
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172 { |
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173 if (val == noreg) { |
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174 __ store_heap_oop_null(obj); |
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175 } else { |
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176 __ store_heap_oop(obj, val); |
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177 // flatten object address if needed |
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178 if (!precise || (obj.index() == noreg && obj.disp() == 0)) { |
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179 __ store_check(obj.base()); |
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180 } else { |
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181 __ leaq(rdx, obj); |
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182 __ store_check(rdx); |
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183 } |
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184 } |
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185 } |
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186 break; |
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187 case BarrierSet::ModRef: |
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188 case BarrierSet::Other: |
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189 if (val == noreg) { |
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190 __ store_heap_oop_null(obj); |
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191 } else { |
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192 __ store_heap_oop(obj, val); |
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193 } |
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194 break; |
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195 default : |
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196 ShouldNotReachHere(); |
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197 |
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198 } |
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199 } |
0 | 200 |
201 Address TemplateTable::at_bcp(int offset) { | |
202 assert(_desc->uses_bcp(), "inconsistent uses_bcp information"); | |
203 return Address(r13, offset); | |
204 } | |
205 | |
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206 void TemplateTable::patch_bytecode(Bytecodes::Code bc, Register bc_reg, |
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207 Register temp_reg, bool load_bc_into_bc_reg/*=true*/, |
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208 int byte_no) { |
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209 if (!RewriteBytecodes) return; |
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210 Label L_patch_done; |
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211 |
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212 switch (bc) { |
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213 case Bytecodes::_fast_aputfield: |
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214 case Bytecodes::_fast_bputfield: |
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215 case Bytecodes::_fast_cputfield: |
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216 case Bytecodes::_fast_dputfield: |
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217 case Bytecodes::_fast_fputfield: |
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218 case Bytecodes::_fast_iputfield: |
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219 case Bytecodes::_fast_lputfield: |
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220 case Bytecodes::_fast_sputfield: |
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221 { |
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222 // We skip bytecode quickening for putfield instructions when |
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223 // the put_code written to the constant pool cache is zero. |
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224 // This is required so that every execution of this instruction |
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225 // calls out to InterpreterRuntime::resolve_get_put to do |
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226 // additional, required work. |
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227 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range"); |
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228 assert(load_bc_into_bc_reg, "we use bc_reg as temp"); |
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229 __ get_cache_and_index_and_bytecode_at_bcp(temp_reg, bc_reg, temp_reg, byte_no, 1); |
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230 __ movl(bc_reg, bc); |
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231 __ cmpl(temp_reg, (int) 0); |
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232 __ jcc(Assembler::zero, L_patch_done); // don't patch |
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233 } |
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234 break; |
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235 default: |
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236 assert(byte_no == -1, "sanity"); |
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237 // the pair bytecodes have already done the load. |
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238 if (load_bc_into_bc_reg) { |
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239 __ movl(bc_reg, bc); |
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240 } |
0 | 241 } |
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242 |
0 | 243 if (JvmtiExport::can_post_breakpoint()) { |
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244 Label L_fast_patch; |
0 | 245 // if a breakpoint is present we can't rewrite the stream directly |
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246 __ movzbl(temp_reg, at_bcp(0)); |
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247 __ cmpl(temp_reg, Bytecodes::_breakpoint); |
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248 __ jcc(Assembler::notEqual, L_fast_patch); |
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249 __ get_method(temp_reg); |
0 | 250 // Let breakpoint table handling rewrite to quicker bytecode |
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251 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), temp_reg, r13, bc_reg); |
0 | 252 #ifndef ASSERT |
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253 __ jmpb(L_patch_done); |
1108 | 254 #else |
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255 __ jmp(L_patch_done); |
1108 | 256 #endif |
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257 __ bind(L_fast_patch); |
0 | 258 } |
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259 |
1108 | 260 #ifdef ASSERT |
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261 Label L_okay; |
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262 __ load_unsigned_byte(temp_reg, at_bcp(0)); |
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263 __ cmpl(temp_reg, (int) Bytecodes::java_code(bc)); |
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264 __ jcc(Assembler::equal, L_okay); |
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265 __ cmpl(temp_reg, bc_reg); |
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266 __ jcc(Assembler::equal, L_okay); |
0 | 267 __ stop("patching the wrong bytecode"); |
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268 __ bind(L_okay); |
0 | 269 #endif |
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270 |
0 | 271 // patch bytecode |
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272 __ movb(at_bcp(0), bc_reg); |
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273 __ bind(L_patch_done); |
0 | 274 } |
275 | |
276 | |
277 // Individual instructions | |
278 | |
279 void TemplateTable::nop() { | |
280 transition(vtos, vtos); | |
281 // nothing to do | |
282 } | |
283 | |
284 void TemplateTable::shouldnotreachhere() { | |
285 transition(vtos, vtos); | |
286 __ stop("shouldnotreachhere bytecode"); | |
287 } | |
288 | |
289 void TemplateTable::aconst_null() { | |
290 transition(vtos, atos); | |
291 __ xorl(rax, rax); | |
292 } | |
293 | |
294 void TemplateTable::iconst(int value) { | |
295 transition(vtos, itos); | |
296 if (value == 0) { | |
297 __ xorl(rax, rax); | |
298 } else { | |
299 __ movl(rax, value); | |
300 } | |
301 } | |
302 | |
303 void TemplateTable::lconst(int value) { | |
304 transition(vtos, ltos); | |
305 if (value == 0) { | |
306 __ xorl(rax, rax); | |
307 } else { | |
308 __ movl(rax, value); | |
309 } | |
310 } | |
311 | |
312 void TemplateTable::fconst(int value) { | |
313 transition(vtos, ftos); | |
314 static float one = 1.0f, two = 2.0f; | |
315 switch (value) { | |
316 case 0: | |
317 __ xorps(xmm0, xmm0); | |
318 break; | |
319 case 1: | |
320 __ movflt(xmm0, ExternalAddress((address) &one)); | |
321 break; | |
322 case 2: | |
323 __ movflt(xmm0, ExternalAddress((address) &two)); | |
324 break; | |
325 default: | |
326 ShouldNotReachHere(); | |
327 break; | |
328 } | |
329 } | |
330 | |
331 void TemplateTable::dconst(int value) { | |
332 transition(vtos, dtos); | |
333 static double one = 1.0; | |
334 switch (value) { | |
335 case 0: | |
336 __ xorpd(xmm0, xmm0); | |
337 break; | |
338 case 1: | |
339 __ movdbl(xmm0, ExternalAddress((address) &one)); | |
340 break; | |
341 default: | |
342 ShouldNotReachHere(); | |
343 break; | |
344 } | |
345 } | |
346 | |
347 void TemplateTable::bipush() { | |
348 transition(vtos, itos); | |
349 __ load_signed_byte(rax, at_bcp(1)); | |
350 } | |
351 | |
352 void TemplateTable::sipush() { | |
353 transition(vtos, itos); | |
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354 __ load_unsigned_short(rax, at_bcp(1)); |
0 | 355 __ bswapl(rax); |
356 __ sarl(rax, 16); | |
357 } | |
358 | |
359 void TemplateTable::ldc(bool wide) { | |
360 transition(vtos, vtos); | |
361 Label call_ldc, notFloat, notClass, Done; | |
362 | |
363 if (wide) { | |
364 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
365 } else { | |
366 __ load_unsigned_byte(rbx, at_bcp(1)); | |
367 } | |
368 | |
369 __ get_cpool_and_tags(rcx, rax); | |
370 const int base_offset = constantPoolOopDesc::header_size() * wordSize; | |
371 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
372 | |
373 // get type | |
374 __ movzbl(rdx, Address(rax, rbx, Address::times_1, tags_offset)); | |
375 | |
376 // unresolved string - get the resolved string | |
377 __ cmpl(rdx, JVM_CONSTANT_UnresolvedString); | |
378 __ jccb(Assembler::equal, call_ldc); | |
379 | |
380 // unresolved class - get the resolved class | |
381 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClass); | |
382 __ jccb(Assembler::equal, call_ldc); | |
383 | |
384 // unresolved class in error state - call into runtime to throw the error | |
385 // from the first resolution attempt | |
386 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClassInError); | |
387 __ jccb(Assembler::equal, call_ldc); | |
388 | |
389 // resolved class - need to call vm to get java mirror of the class | |
390 __ cmpl(rdx, JVM_CONSTANT_Class); | |
391 __ jcc(Assembler::notEqual, notClass); | |
392 | |
393 __ bind(call_ldc); | |
394 __ movl(c_rarg1, wide); | |
395 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), c_rarg1); | |
396 __ push_ptr(rax); | |
397 __ verify_oop(rax); | |
398 __ jmp(Done); | |
399 | |
400 __ bind(notClass); | |
401 __ cmpl(rdx, JVM_CONSTANT_Float); | |
402 __ jccb(Assembler::notEqual, notFloat); | |
403 // ftos | |
404 __ movflt(xmm0, Address(rcx, rbx, Address::times_8, base_offset)); | |
405 __ push_f(); | |
406 __ jmp(Done); | |
407 | |
408 __ bind(notFloat); | |
409 #ifdef ASSERT | |
410 { | |
411 Label L; | |
412 __ cmpl(rdx, JVM_CONSTANT_Integer); | |
413 __ jcc(Assembler::equal, L); | |
414 __ cmpl(rdx, JVM_CONSTANT_String); | |
415 __ jcc(Assembler::equal, L); | |
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416 __ cmpl(rdx, JVM_CONSTANT_Object); |
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417 __ jcc(Assembler::equal, L); |
0 | 418 __ stop("unexpected tag type in ldc"); |
419 __ bind(L); | |
420 } | |
421 #endif | |
422 // atos and itos | |
423 Label isOop; | |
424 __ cmpl(rdx, JVM_CONSTANT_Integer); | |
425 __ jcc(Assembler::notEqual, isOop); | |
426 __ movl(rax, Address(rcx, rbx, Address::times_8, base_offset)); | |
427 __ push_i(rax); | |
428 __ jmp(Done); | |
429 | |
430 __ bind(isOop); | |
304 | 431 __ movptr(rax, Address(rcx, rbx, Address::times_8, base_offset)); |
0 | 432 __ push_ptr(rax); |
433 | |
434 if (VerifyOops) { | |
435 __ verify_oop(rax); | |
436 } | |
437 | |
438 __ bind(Done); | |
439 } | |
440 | |
1602 | 441 // Fast path for caching oop constants. |
442 // %%% We should use this to handle Class and String constants also. | |
443 // %%% It will simplify the ldc/primitive path considerably. | |
444 void TemplateTable::fast_aldc(bool wide) { | |
445 transition(vtos, atos); | |
446 | |
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447 if (!EnableInvokeDynamic) { |
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448 // We should not encounter this bytecode if !EnableInvokeDynamic. |
1602 | 449 // The verifier will stop it. However, if we get past the verifier, |
450 // this will stop the thread in a reasonable way, without crashing the JVM. | |
451 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
452 InterpreterRuntime::throw_IncompatibleClassChangeError)); | |
453 // the call_VM checks for exception, so we should never return here. | |
454 __ should_not_reach_here(); | |
455 return; | |
456 } | |
457 | |
458 const Register cache = rcx; | |
459 const Register index = rdx; | |
460 | |
461 resolve_cache_and_index(f1_oop, rax, cache, index, wide ? sizeof(u2) : sizeof(u1)); | |
462 if (VerifyOops) { | |
463 __ verify_oop(rax); | |
464 } | |
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465 |
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466 Label L_done, L_throw_exception; |
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467 const Register con_klass_temp = rcx; // same as cache |
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468 const Register array_klass_temp = rdx; // same as index |
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469 __ load_klass(con_klass_temp, rax); |
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470 __ lea(array_klass_temp, ExternalAddress((address)Universe::systemObjArrayKlassObj_addr())); |
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471 __ cmpptr(con_klass_temp, Address(array_klass_temp, 0)); |
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472 __ jcc(Assembler::notEqual, L_done); |
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473 __ cmpl(Address(rax, arrayOopDesc::length_offset_in_bytes()), 0); |
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474 __ jcc(Assembler::notEqual, L_throw_exception); |
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475 __ xorptr(rax, rax); |
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476 __ jmp(L_done); |
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477 |
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478 // Load the exception from the system-array which wraps it: |
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479 __ bind(L_throw_exception); |
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480 __ load_heap_oop(rax, Address(rax, arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
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481 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); |
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482 |
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483 __ bind(L_done); |
1602 | 484 } |
485 | |
0 | 486 void TemplateTable::ldc2_w() { |
487 transition(vtos, vtos); | |
488 Label Long, Done; | |
489 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
490 | |
491 __ get_cpool_and_tags(rcx, rax); | |
492 const int base_offset = constantPoolOopDesc::header_size() * wordSize; | |
493 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
494 | |
495 // get type | |
496 __ cmpb(Address(rax, rbx, Address::times_1, tags_offset), | |
497 JVM_CONSTANT_Double); | |
498 __ jccb(Assembler::notEqual, Long); | |
499 // dtos | |
500 __ movdbl(xmm0, Address(rcx, rbx, Address::times_8, base_offset)); | |
501 __ push_d(); | |
502 __ jmpb(Done); | |
503 | |
504 __ bind(Long); | |
505 // ltos | |
506 __ movq(rax, Address(rcx, rbx, Address::times_8, base_offset)); | |
507 __ push_l(); | |
508 | |
509 __ bind(Done); | |
510 } | |
511 | |
512 void TemplateTable::locals_index(Register reg, int offset) { | |
513 __ load_unsigned_byte(reg, at_bcp(offset)); | |
304 | 514 __ negptr(reg); |
0 | 515 } |
516 | |
517 void TemplateTable::iload() { | |
518 transition(vtos, itos); | |
519 if (RewriteFrequentPairs) { | |
520 Label rewrite, done; | |
521 const Register bc = c_rarg3; | |
522 assert(rbx != bc, "register damaged"); | |
523 | |
524 // get next byte | |
525 __ load_unsigned_byte(rbx, | |
526 at_bcp(Bytecodes::length_for(Bytecodes::_iload))); | |
527 // if _iload, wait to rewrite to iload2. We only want to rewrite the | |
528 // last two iloads in a pair. Comparing against fast_iload means that | |
529 // the next bytecode is neither an iload or a caload, and therefore | |
530 // an iload pair. | |
531 __ cmpl(rbx, Bytecodes::_iload); | |
532 __ jcc(Assembler::equal, done); | |
533 | |
534 __ cmpl(rbx, Bytecodes::_fast_iload); | |
535 __ movl(bc, Bytecodes::_fast_iload2); | |
536 __ jccb(Assembler::equal, rewrite); | |
537 | |
538 // if _caload, rewrite to fast_icaload | |
539 __ cmpl(rbx, Bytecodes::_caload); | |
540 __ movl(bc, Bytecodes::_fast_icaload); | |
541 __ jccb(Assembler::equal, rewrite); | |
542 | |
543 // rewrite so iload doesn't check again. | |
544 __ movl(bc, Bytecodes::_fast_iload); | |
545 | |
546 // rewrite | |
547 // bc: fast bytecode | |
548 __ bind(rewrite); | |
549 patch_bytecode(Bytecodes::_iload, bc, rbx, false); | |
550 __ bind(done); | |
551 } | |
552 | |
553 // Get the local value into tos | |
554 locals_index(rbx); | |
555 __ movl(rax, iaddress(rbx)); | |
556 } | |
557 | |
558 void TemplateTable::fast_iload2() { | |
559 transition(vtos, itos); | |
560 locals_index(rbx); | |
561 __ movl(rax, iaddress(rbx)); | |
562 __ push(itos); | |
563 locals_index(rbx, 3); | |
564 __ movl(rax, iaddress(rbx)); | |
565 } | |
566 | |
567 void TemplateTable::fast_iload() { | |
568 transition(vtos, itos); | |
569 locals_index(rbx); | |
570 __ movl(rax, iaddress(rbx)); | |
571 } | |
572 | |
573 void TemplateTable::lload() { | |
574 transition(vtos, ltos); | |
575 locals_index(rbx); | |
576 __ movq(rax, laddress(rbx)); | |
577 } | |
578 | |
579 void TemplateTable::fload() { | |
580 transition(vtos, ftos); | |
581 locals_index(rbx); | |
582 __ movflt(xmm0, faddress(rbx)); | |
583 } | |
584 | |
585 void TemplateTable::dload() { | |
586 transition(vtos, dtos); | |
587 locals_index(rbx); | |
588 __ movdbl(xmm0, daddress(rbx)); | |
589 } | |
590 | |
591 void TemplateTable::aload() { | |
592 transition(vtos, atos); | |
593 locals_index(rbx); | |
304 | 594 __ movptr(rax, aaddress(rbx)); |
0 | 595 } |
596 | |
597 void TemplateTable::locals_index_wide(Register reg) { | |
598 __ movl(reg, at_bcp(2)); | |
599 __ bswapl(reg); | |
600 __ shrl(reg, 16); | |
304 | 601 __ negptr(reg); |
0 | 602 } |
603 | |
604 void TemplateTable::wide_iload() { | |
605 transition(vtos, itos); | |
606 locals_index_wide(rbx); | |
607 __ movl(rax, iaddress(rbx)); | |
608 } | |
609 | |
610 void TemplateTable::wide_lload() { | |
611 transition(vtos, ltos); | |
612 locals_index_wide(rbx); | |
613 __ movq(rax, laddress(rbx)); | |
614 } | |
615 | |
616 void TemplateTable::wide_fload() { | |
617 transition(vtos, ftos); | |
618 locals_index_wide(rbx); | |
619 __ movflt(xmm0, faddress(rbx)); | |
620 } | |
621 | |
622 void TemplateTable::wide_dload() { | |
623 transition(vtos, dtos); | |
624 locals_index_wide(rbx); | |
625 __ movdbl(xmm0, daddress(rbx)); | |
626 } | |
627 | |
628 void TemplateTable::wide_aload() { | |
629 transition(vtos, atos); | |
630 locals_index_wide(rbx); | |
304 | 631 __ movptr(rax, aaddress(rbx)); |
0 | 632 } |
633 | |
634 void TemplateTable::index_check(Register array, Register index) { | |
635 // destroys rbx | |
636 // check array | |
637 __ null_check(array, arrayOopDesc::length_offset_in_bytes()); | |
638 // sign extend index for use by indexed load | |
304 | 639 __ movl2ptr(index, index); |
0 | 640 // check index |
641 __ cmpl(index, Address(array, arrayOopDesc::length_offset_in_bytes())); | |
642 if (index != rbx) { | |
643 // ??? convention: move aberrant index into ebx for exception message | |
644 assert(rbx != array, "different registers"); | |
645 __ movl(rbx, index); | |
646 } | |
647 __ jump_cc(Assembler::aboveEqual, | |
648 ExternalAddress(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry)); | |
649 } | |
650 | |
651 void TemplateTable::iaload() { | |
652 transition(itos, itos); | |
653 __ pop_ptr(rdx); | |
654 // eax: index | |
655 // rdx: array | |
656 index_check(rdx, rax); // kills rbx | |
657 __ movl(rax, Address(rdx, rax, | |
658 Address::times_4, | |
659 arrayOopDesc::base_offset_in_bytes(T_INT))); | |
660 } | |
661 | |
662 void TemplateTable::laload() { | |
663 transition(itos, ltos); | |
664 __ pop_ptr(rdx); | |
665 // eax: index | |
666 // rdx: array | |
667 index_check(rdx, rax); // kills rbx | |
668 __ movq(rax, Address(rdx, rbx, | |
669 Address::times_8, | |
670 arrayOopDesc::base_offset_in_bytes(T_LONG))); | |
671 } | |
672 | |
673 void TemplateTable::faload() { | |
674 transition(itos, ftos); | |
675 __ pop_ptr(rdx); | |
676 // eax: index | |
677 // rdx: array | |
678 index_check(rdx, rax); // kills rbx | |
679 __ movflt(xmm0, Address(rdx, rax, | |
680 Address::times_4, | |
681 arrayOopDesc::base_offset_in_bytes(T_FLOAT))); | |
682 } | |
683 | |
684 void TemplateTable::daload() { | |
685 transition(itos, dtos); | |
686 __ pop_ptr(rdx); | |
687 // eax: index | |
688 // rdx: array | |
689 index_check(rdx, rax); // kills rbx | |
690 __ movdbl(xmm0, Address(rdx, rax, | |
691 Address::times_8, | |
692 arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); | |
693 } | |
694 | |
695 void TemplateTable::aaload() { | |
696 transition(itos, atos); | |
697 __ pop_ptr(rdx); | |
698 // eax: index | |
699 // rdx: array | |
700 index_check(rdx, rax); // kills rbx | |
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701 __ load_heap_oop(rax, Address(rdx, rax, |
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702 UseCompressedOops ? Address::times_4 : Address::times_8, |
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703 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
0 | 704 } |
705 | |
706 void TemplateTable::baload() { | |
707 transition(itos, itos); | |
708 __ pop_ptr(rdx); | |
709 // eax: index | |
710 // rdx: array | |
711 index_check(rdx, rax); // kills rbx | |
712 __ load_signed_byte(rax, | |
713 Address(rdx, rax, | |
714 Address::times_1, | |
715 arrayOopDesc::base_offset_in_bytes(T_BYTE))); | |
716 } | |
717 | |
718 void TemplateTable::caload() { | |
719 transition(itos, itos); | |
720 __ pop_ptr(rdx); | |
721 // eax: index | |
722 // rdx: array | |
723 index_check(rdx, rax); // kills rbx | |
622
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724 __ load_unsigned_short(rax, |
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725 Address(rdx, rax, |
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726 Address::times_2, |
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727 arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
0 | 728 } |
729 | |
730 // iload followed by caload frequent pair | |
731 void TemplateTable::fast_icaload() { | |
732 transition(vtos, itos); | |
733 // load index out of locals | |
734 locals_index(rbx); | |
735 __ movl(rax, iaddress(rbx)); | |
736 | |
737 // eax: index | |
738 // rdx: array | |
739 __ pop_ptr(rdx); | |
740 index_check(rdx, rax); // kills rbx | |
622
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741 __ load_unsigned_short(rax, |
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742 Address(rdx, rax, |
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743 Address::times_2, |
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744 arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
0 | 745 } |
746 | |
747 void TemplateTable::saload() { | |
748 transition(itos, itos); | |
749 __ pop_ptr(rdx); | |
750 // eax: index | |
751 // rdx: array | |
752 index_check(rdx, rax); // kills rbx | |
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753 __ load_signed_short(rax, |
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754 Address(rdx, rax, |
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755 Address::times_2, |
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756 arrayOopDesc::base_offset_in_bytes(T_SHORT))); |
0 | 757 } |
758 | |
759 void TemplateTable::iload(int n) { | |
760 transition(vtos, itos); | |
761 __ movl(rax, iaddress(n)); | |
762 } | |
763 | |
764 void TemplateTable::lload(int n) { | |
765 transition(vtos, ltos); | |
766 __ movq(rax, laddress(n)); | |
767 } | |
768 | |
769 void TemplateTable::fload(int n) { | |
770 transition(vtos, ftos); | |
771 __ movflt(xmm0, faddress(n)); | |
772 } | |
773 | |
774 void TemplateTable::dload(int n) { | |
775 transition(vtos, dtos); | |
776 __ movdbl(xmm0, daddress(n)); | |
777 } | |
778 | |
779 void TemplateTable::aload(int n) { | |
780 transition(vtos, atos); | |
304 | 781 __ movptr(rax, aaddress(n)); |
0 | 782 } |
783 | |
784 void TemplateTable::aload_0() { | |
785 transition(vtos, atos); | |
786 // According to bytecode histograms, the pairs: | |
787 // | |
788 // _aload_0, _fast_igetfield | |
789 // _aload_0, _fast_agetfield | |
790 // _aload_0, _fast_fgetfield | |
791 // | |
792 // occur frequently. If RewriteFrequentPairs is set, the (slow) | |
793 // _aload_0 bytecode checks if the next bytecode is either | |
794 // _fast_igetfield, _fast_agetfield or _fast_fgetfield and then | |
795 // rewrites the current bytecode into a pair bytecode; otherwise it | |
796 // rewrites the current bytecode into _fast_aload_0 that doesn't do | |
797 // the pair check anymore. | |
798 // | |
799 // Note: If the next bytecode is _getfield, the rewrite must be | |
800 // delayed, otherwise we may miss an opportunity for a pair. | |
801 // | |
802 // Also rewrite frequent pairs | |
803 // aload_0, aload_1 | |
804 // aload_0, iload_1 | |
805 // These bytecodes with a small amount of code are most profitable | |
806 // to rewrite | |
807 if (RewriteFrequentPairs) { | |
808 Label rewrite, done; | |
809 const Register bc = c_rarg3; | |
810 assert(rbx != bc, "register damaged"); | |
811 // get next byte | |
812 __ load_unsigned_byte(rbx, | |
813 at_bcp(Bytecodes::length_for(Bytecodes::_aload_0))); | |
814 | |
815 // do actual aload_0 | |
816 aload(0); | |
817 | |
818 // if _getfield then wait with rewrite | |
819 __ cmpl(rbx, Bytecodes::_getfield); | |
820 __ jcc(Assembler::equal, done); | |
821 | |
822 // if _igetfield then reqrite to _fast_iaccess_0 | |
823 assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == | |
824 Bytecodes::_aload_0, | |
825 "fix bytecode definition"); | |
826 __ cmpl(rbx, Bytecodes::_fast_igetfield); | |
827 __ movl(bc, Bytecodes::_fast_iaccess_0); | |
828 __ jccb(Assembler::equal, rewrite); | |
829 | |
830 // if _agetfield then reqrite to _fast_aaccess_0 | |
831 assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == | |
832 Bytecodes::_aload_0, | |
833 "fix bytecode definition"); | |
834 __ cmpl(rbx, Bytecodes::_fast_agetfield); | |
835 __ movl(bc, Bytecodes::_fast_aaccess_0); | |
836 __ jccb(Assembler::equal, rewrite); | |
837 | |
838 // if _fgetfield then reqrite to _fast_faccess_0 | |
839 assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == | |
840 Bytecodes::_aload_0, | |
841 "fix bytecode definition"); | |
842 __ cmpl(rbx, Bytecodes::_fast_fgetfield); | |
843 __ movl(bc, Bytecodes::_fast_faccess_0); | |
844 __ jccb(Assembler::equal, rewrite); | |
845 | |
846 // else rewrite to _fast_aload0 | |
847 assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == | |
848 Bytecodes::_aload_0, | |
849 "fix bytecode definition"); | |
850 __ movl(bc, Bytecodes::_fast_aload_0); | |
851 | |
852 // rewrite | |
853 // bc: fast bytecode | |
854 __ bind(rewrite); | |
855 patch_bytecode(Bytecodes::_aload_0, bc, rbx, false); | |
856 | |
857 __ bind(done); | |
858 } else { | |
859 aload(0); | |
860 } | |
861 } | |
862 | |
863 void TemplateTable::istore() { | |
864 transition(itos, vtos); | |
865 locals_index(rbx); | |
866 __ movl(iaddress(rbx), rax); | |
867 } | |
868 | |
869 void TemplateTable::lstore() { | |
870 transition(ltos, vtos); | |
871 locals_index(rbx); | |
872 __ movq(laddress(rbx), rax); | |
873 } | |
874 | |
875 void TemplateTable::fstore() { | |
876 transition(ftos, vtos); | |
877 locals_index(rbx); | |
878 __ movflt(faddress(rbx), xmm0); | |
879 } | |
880 | |
881 void TemplateTable::dstore() { | |
882 transition(dtos, vtos); | |
883 locals_index(rbx); | |
884 __ movdbl(daddress(rbx), xmm0); | |
885 } | |
886 | |
887 void TemplateTable::astore() { | |
888 transition(vtos, vtos); | |
1506 | 889 __ pop_ptr(rax); |
0 | 890 locals_index(rbx); |
304 | 891 __ movptr(aaddress(rbx), rax); |
0 | 892 } |
893 | |
894 void TemplateTable::wide_istore() { | |
895 transition(vtos, vtos); | |
896 __ pop_i(); | |
897 locals_index_wide(rbx); | |
898 __ movl(iaddress(rbx), rax); | |
899 } | |
900 | |
901 void TemplateTable::wide_lstore() { | |
902 transition(vtos, vtos); | |
903 __ pop_l(); | |
904 locals_index_wide(rbx); | |
905 __ movq(laddress(rbx), rax); | |
906 } | |
907 | |
908 void TemplateTable::wide_fstore() { | |
909 transition(vtos, vtos); | |
910 __ pop_f(); | |
911 locals_index_wide(rbx); | |
912 __ movflt(faddress(rbx), xmm0); | |
913 } | |
914 | |
915 void TemplateTable::wide_dstore() { | |
916 transition(vtos, vtos); | |
917 __ pop_d(); | |
918 locals_index_wide(rbx); | |
919 __ movdbl(daddress(rbx), xmm0); | |
920 } | |
921 | |
922 void TemplateTable::wide_astore() { | |
923 transition(vtos, vtos); | |
1506 | 924 __ pop_ptr(rax); |
0 | 925 locals_index_wide(rbx); |
304 | 926 __ movptr(aaddress(rbx), rax); |
0 | 927 } |
928 | |
929 void TemplateTable::iastore() { | |
930 transition(itos, vtos); | |
931 __ pop_i(rbx); | |
932 __ pop_ptr(rdx); | |
933 // eax: value | |
934 // ebx: index | |
935 // rdx: array | |
936 index_check(rdx, rbx); // prefer index in ebx | |
937 __ movl(Address(rdx, rbx, | |
938 Address::times_4, | |
939 arrayOopDesc::base_offset_in_bytes(T_INT)), | |
940 rax); | |
941 } | |
942 | |
943 void TemplateTable::lastore() { | |
944 transition(ltos, vtos); | |
945 __ pop_i(rbx); | |
946 __ pop_ptr(rdx); | |
947 // rax: value | |
948 // ebx: index | |
949 // rdx: array | |
950 index_check(rdx, rbx); // prefer index in ebx | |
951 __ movq(Address(rdx, rbx, | |
952 Address::times_8, | |
953 arrayOopDesc::base_offset_in_bytes(T_LONG)), | |
954 rax); | |
955 } | |
956 | |
957 void TemplateTable::fastore() { | |
958 transition(ftos, vtos); | |
959 __ pop_i(rbx); | |
960 __ pop_ptr(rdx); | |
961 // xmm0: value | |
962 // ebx: index | |
963 // rdx: array | |
964 index_check(rdx, rbx); // prefer index in ebx | |
965 __ movflt(Address(rdx, rbx, | |
966 Address::times_4, | |
967 arrayOopDesc::base_offset_in_bytes(T_FLOAT)), | |
968 xmm0); | |
969 } | |
970 | |
971 void TemplateTable::dastore() { | |
972 transition(dtos, vtos); | |
973 __ pop_i(rbx); | |
974 __ pop_ptr(rdx); | |
975 // xmm0: value | |
976 // ebx: index | |
977 // rdx: array | |
978 index_check(rdx, rbx); // prefer index in ebx | |
979 __ movdbl(Address(rdx, rbx, | |
980 Address::times_8, | |
981 arrayOopDesc::base_offset_in_bytes(T_DOUBLE)), | |
982 xmm0); | |
983 } | |
984 | |
985 void TemplateTable::aastore() { | |
986 Label is_null, ok_is_subtype, done; | |
987 transition(vtos, vtos); | |
988 // stack: ..., array, index, value | |
304 | 989 __ movptr(rax, at_tos()); // value |
0 | 990 __ movl(rcx, at_tos_p1()); // index |
304 | 991 __ movptr(rdx, at_tos_p2()); // array |
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992 |
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993 Address element_address(rdx, rcx, |
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994 UseCompressedOops? Address::times_4 : Address::times_8, |
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995 arrayOopDesc::base_offset_in_bytes(T_OBJECT)); |
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996 |
0 | 997 index_check(rdx, rcx); // kills rbx |
998 // do array store check - check for NULL value first | |
304 | 999 __ testptr(rax, rax); |
0 | 1000 __ jcc(Assembler::zero, is_null); |
1001 | |
1002 // Move subklass into rbx | |
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1003 __ load_klass(rbx, rax); |
0 | 1004 // Move superklass into rax |
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1005 __ load_klass(rax, rdx); |
304 | 1006 __ movptr(rax, Address(rax, |
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1007 objArrayKlass::element_klass_offset())); |
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1008 // Compress array + index*oopSize + 12 into a single register. Frees rcx. |
362 | 1009 __ lea(rdx, element_address); |
0 | 1010 |
1011 // Generate subtype check. Blows rcx, rdi | |
1012 // Superklass in rax. Subklass in rbx. | |
1013 __ gen_subtype_check(rbx, ok_is_subtype); | |
1014 | |
1015 // Come here on failure | |
1016 // object is at TOS | |
1017 __ jump(ExternalAddress(Interpreter::_throw_ArrayStoreException_entry)); | |
1018 | |
1019 // Come here on success | |
1020 __ bind(ok_is_subtype); | |
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1021 |
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1022 // Get the value we will store |
362 | 1023 __ movptr(rax, at_tos()); |
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1024 // Now store using the appropriate barrier |
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1025 do_oop_store(_masm, Address(rdx, 0), rax, _bs->kind(), true); |
0 | 1026 __ jmp(done); |
1027 | |
1028 // Have a NULL in rax, rdx=array, ecx=index. Store NULL at ary[idx] | |
1029 __ bind(is_null); | |
1030 __ profile_null_seen(rbx); | |
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1031 |
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1032 // Store a NULL |
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1033 do_oop_store(_masm, element_address, noreg, _bs->kind(), true); |
0 | 1034 |
1035 // Pop stack arguments | |
1036 __ bind(done); | |
1506 | 1037 __ addptr(rsp, 3 * Interpreter::stackElementSize); |
0 | 1038 } |
1039 | |
1040 void TemplateTable::bastore() { | |
1041 transition(itos, vtos); | |
1042 __ pop_i(rbx); | |
1043 __ pop_ptr(rdx); | |
1044 // eax: value | |
1045 // ebx: index | |
1046 // rdx: array | |
1047 index_check(rdx, rbx); // prefer index in ebx | |
1048 __ movb(Address(rdx, rbx, | |
1049 Address::times_1, | |
1050 arrayOopDesc::base_offset_in_bytes(T_BYTE)), | |
1051 rax); | |
1052 } | |
1053 | |
1054 void TemplateTable::castore() { | |
1055 transition(itos, vtos); | |
1056 __ pop_i(rbx); | |
1057 __ pop_ptr(rdx); | |
1058 // eax: value | |
1059 // ebx: index | |
1060 // rdx: array | |
1061 index_check(rdx, rbx); // prefer index in ebx | |
1062 __ movw(Address(rdx, rbx, | |
1063 Address::times_2, | |
1064 arrayOopDesc::base_offset_in_bytes(T_CHAR)), | |
1065 rax); | |
1066 } | |
1067 | |
1068 void TemplateTable::sastore() { | |
1069 castore(); | |
1070 } | |
1071 | |
1072 void TemplateTable::istore(int n) { | |
1073 transition(itos, vtos); | |
1074 __ movl(iaddress(n), rax); | |
1075 } | |
1076 | |
1077 void TemplateTable::lstore(int n) { | |
1078 transition(ltos, vtos); | |
1079 __ movq(laddress(n), rax); | |
1080 } | |
1081 | |
1082 void TemplateTable::fstore(int n) { | |
1083 transition(ftos, vtos); | |
1084 __ movflt(faddress(n), xmm0); | |
1085 } | |
1086 | |
1087 void TemplateTable::dstore(int n) { | |
1088 transition(dtos, vtos); | |
1089 __ movdbl(daddress(n), xmm0); | |
1090 } | |
1091 | |
1092 void TemplateTable::astore(int n) { | |
1093 transition(vtos, vtos); | |
1506 | 1094 __ pop_ptr(rax); |
304 | 1095 __ movptr(aaddress(n), rax); |
0 | 1096 } |
1097 | |
1098 void TemplateTable::pop() { | |
1099 transition(vtos, vtos); | |
1506 | 1100 __ addptr(rsp, Interpreter::stackElementSize); |
0 | 1101 } |
1102 | |
1103 void TemplateTable::pop2() { | |
1104 transition(vtos, vtos); | |
1506 | 1105 __ addptr(rsp, 2 * Interpreter::stackElementSize); |
0 | 1106 } |
1107 | |
1108 void TemplateTable::dup() { | |
1109 transition(vtos, vtos); | |
1506 | 1110 __ load_ptr(0, rax); |
1111 __ push_ptr(rax); | |
0 | 1112 // stack: ..., a, a |
1113 } | |
1114 | |
1115 void TemplateTable::dup_x1() { | |
1116 transition(vtos, vtos); | |
1117 // stack: ..., a, b | |
1506 | 1118 __ load_ptr( 0, rax); // load b |
1119 __ load_ptr( 1, rcx); // load a | |
1120 __ store_ptr(1, rax); // store b | |
1121 __ store_ptr(0, rcx); // store a | |
1122 __ push_ptr(rax); // push b | |
0 | 1123 // stack: ..., b, a, b |
1124 } | |
1125 | |
1126 void TemplateTable::dup_x2() { | |
1127 transition(vtos, vtos); | |
1128 // stack: ..., a, b, c | |
1506 | 1129 __ load_ptr( 0, rax); // load c |
1130 __ load_ptr( 2, rcx); // load a | |
1131 __ store_ptr(2, rax); // store c in a | |
1132 __ push_ptr(rax); // push c | |
0 | 1133 // stack: ..., c, b, c, c |
1506 | 1134 __ load_ptr( 2, rax); // load b |
1135 __ store_ptr(2, rcx); // store a in b | |
0 | 1136 // stack: ..., c, a, c, c |
1506 | 1137 __ store_ptr(1, rax); // store b in c |
0 | 1138 // stack: ..., c, a, b, c |
1139 } | |
1140 | |
1141 void TemplateTable::dup2() { | |
1142 transition(vtos, vtos); | |
1143 // stack: ..., a, b | |
1506 | 1144 __ load_ptr(1, rax); // load a |
1145 __ push_ptr(rax); // push a | |
1146 __ load_ptr(1, rax); // load b | |
1147 __ push_ptr(rax); // push b | |
0 | 1148 // stack: ..., a, b, a, b |
1149 } | |
1150 | |
1151 void TemplateTable::dup2_x1() { | |
1152 transition(vtos, vtos); | |
1153 // stack: ..., a, b, c | |
1506 | 1154 __ load_ptr( 0, rcx); // load c |
1155 __ load_ptr( 1, rax); // load b | |
1156 __ push_ptr(rax); // push b | |
1157 __ push_ptr(rcx); // push c | |
0 | 1158 // stack: ..., a, b, c, b, c |
1506 | 1159 __ store_ptr(3, rcx); // store c in b |
0 | 1160 // stack: ..., a, c, c, b, c |
1506 | 1161 __ load_ptr( 4, rcx); // load a |
1162 __ store_ptr(2, rcx); // store a in 2nd c | |
0 | 1163 // stack: ..., a, c, a, b, c |
1506 | 1164 __ store_ptr(4, rax); // store b in a |
0 | 1165 // stack: ..., b, c, a, b, c |
1166 } | |
1167 | |
1168 void TemplateTable::dup2_x2() { | |
1169 transition(vtos, vtos); | |
1170 // stack: ..., a, b, c, d | |
1506 | 1171 __ load_ptr( 0, rcx); // load d |
1172 __ load_ptr( 1, rax); // load c | |
1173 __ push_ptr(rax); // push c | |
1174 __ push_ptr(rcx); // push d | |
0 | 1175 // stack: ..., a, b, c, d, c, d |
1506 | 1176 __ load_ptr( 4, rax); // load b |
1177 __ store_ptr(2, rax); // store b in d | |
1178 __ store_ptr(4, rcx); // store d in b | |
0 | 1179 // stack: ..., a, d, c, b, c, d |
1506 | 1180 __ load_ptr( 5, rcx); // load a |
1181 __ load_ptr( 3, rax); // load c | |
1182 __ store_ptr(3, rcx); // store a in c | |
1183 __ store_ptr(5, rax); // store c in a | |
0 | 1184 // stack: ..., c, d, a, b, c, d |
1185 } | |
1186 | |
1187 void TemplateTable::swap() { | |
1188 transition(vtos, vtos); | |
1189 // stack: ..., a, b | |
1506 | 1190 __ load_ptr( 1, rcx); // load a |
1191 __ load_ptr( 0, rax); // load b | |
1192 __ store_ptr(0, rcx); // store a in b | |
1193 __ store_ptr(1, rax); // store b in a | |
0 | 1194 // stack: ..., b, a |
1195 } | |
1196 | |
1197 void TemplateTable::iop2(Operation op) { | |
1198 transition(itos, itos); | |
1199 switch (op) { | |
1200 case add : __ pop_i(rdx); __ addl (rax, rdx); break; | |
1201 case sub : __ movl(rdx, rax); __ pop_i(rax); __ subl (rax, rdx); break; | |
1202 case mul : __ pop_i(rdx); __ imull(rax, rdx); break; | |
1203 case _and : __ pop_i(rdx); __ andl (rax, rdx); break; | |
1204 case _or : __ pop_i(rdx); __ orl (rax, rdx); break; | |
1205 case _xor : __ pop_i(rdx); __ xorl (rax, rdx); break; | |
1206 case shl : __ movl(rcx, rax); __ pop_i(rax); __ shll (rax); break; | |
1207 case shr : __ movl(rcx, rax); __ pop_i(rax); __ sarl (rax); break; | |
1208 case ushr : __ movl(rcx, rax); __ pop_i(rax); __ shrl (rax); break; | |
1209 default : ShouldNotReachHere(); | |
1210 } | |
1211 } | |
1212 | |
1213 void TemplateTable::lop2(Operation op) { | |
1214 transition(ltos, ltos); | |
1215 switch (op) { | |
1506 | 1216 case add : __ pop_l(rdx); __ addptr(rax, rdx); break; |
1217 case sub : __ mov(rdx, rax); __ pop_l(rax); __ subptr(rax, rdx); break; | |
1218 case _and : __ pop_l(rdx); __ andptr(rax, rdx); break; | |
1219 case _or : __ pop_l(rdx); __ orptr (rax, rdx); break; | |
1220 case _xor : __ pop_l(rdx); __ xorptr(rax, rdx); break; | |
1221 default : ShouldNotReachHere(); | |
0 | 1222 } |
1223 } | |
1224 | |
1225 void TemplateTable::idiv() { | |
1226 transition(itos, itos); | |
1227 __ movl(rcx, rax); | |
1228 __ pop_i(rax); | |
1229 // Note: could xor eax and ecx and compare with (-1 ^ min_int). If | |
1230 // they are not equal, one could do a normal division (no correction | |
1231 // needed), which may speed up this implementation for the common case. | |
1232 // (see also JVM spec., p.243 & p.271) | |
1233 __ corrected_idivl(rcx); | |
1234 } | |
1235 | |
1236 void TemplateTable::irem() { | |
1237 transition(itos, itos); | |
1238 __ movl(rcx, rax); | |
1239 __ pop_i(rax); | |
1240 // Note: could xor eax and ecx and compare with (-1 ^ min_int). If | |
1241 // they are not equal, one could do a normal division (no correction | |
1242 // needed), which may speed up this implementation for the common case. | |
1243 // (see also JVM spec., p.243 & p.271) | |
1244 __ corrected_idivl(rcx); | |
1245 __ movl(rax, rdx); | |
1246 } | |
1247 | |
1248 void TemplateTable::lmul() { | |
1249 transition(ltos, ltos); | |
1250 __ pop_l(rdx); | |
1251 __ imulq(rax, rdx); | |
1252 } | |
1253 | |
1254 void TemplateTable::ldiv() { | |
1255 transition(ltos, ltos); | |
304 | 1256 __ mov(rcx, rax); |
0 | 1257 __ pop_l(rax); |
1258 // generate explicit div0 check | |
1259 __ testq(rcx, rcx); | |
1260 __ jump_cc(Assembler::zero, | |
1261 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1262 // Note: could xor rax and rcx and compare with (-1 ^ min_int). If | |
1263 // they are not equal, one could do a normal division (no correction | |
1264 // needed), which may speed up this implementation for the common case. | |
1265 // (see also JVM spec., p.243 & p.271) | |
1266 __ corrected_idivq(rcx); // kills rbx | |
1267 } | |
1268 | |
1269 void TemplateTable::lrem() { | |
1270 transition(ltos, ltos); | |
304 | 1271 __ mov(rcx, rax); |
0 | 1272 __ pop_l(rax); |
1273 __ testq(rcx, rcx); | |
1274 __ jump_cc(Assembler::zero, | |
1275 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1276 // Note: could xor rax and rcx and compare with (-1 ^ min_int). If | |
1277 // they are not equal, one could do a normal division (no correction | |
1278 // needed), which may speed up this implementation for the common case. | |
1279 // (see also JVM spec., p.243 & p.271) | |
1280 __ corrected_idivq(rcx); // kills rbx | |
304 | 1281 __ mov(rax, rdx); |
0 | 1282 } |
1283 | |
1284 void TemplateTable::lshl() { | |
1285 transition(itos, ltos); | |
1286 __ movl(rcx, rax); // get shift count | |
1287 __ pop_l(rax); // get shift value | |
1288 __ shlq(rax); | |
1289 } | |
1290 | |
1291 void TemplateTable::lshr() { | |
1292 transition(itos, ltos); | |
1293 __ movl(rcx, rax); // get shift count | |
1294 __ pop_l(rax); // get shift value | |
1295 __ sarq(rax); | |
1296 } | |
1297 | |
1298 void TemplateTable::lushr() { | |
1299 transition(itos, ltos); | |
1300 __ movl(rcx, rax); // get shift count | |
1301 __ pop_l(rax); // get shift value | |
1302 __ shrq(rax); | |
1303 } | |
1304 | |
1305 void TemplateTable::fop2(Operation op) { | |
1306 transition(ftos, ftos); | |
1307 switch (op) { | |
1308 case add: | |
1309 __ addss(xmm0, at_rsp()); | |
1506 | 1310 __ addptr(rsp, Interpreter::stackElementSize); |
0 | 1311 break; |
1312 case sub: | |
1313 __ movflt(xmm1, xmm0); | |
1314 __ pop_f(xmm0); | |
1315 __ subss(xmm0, xmm1); | |
1316 break; | |
1317 case mul: | |
1318 __ mulss(xmm0, at_rsp()); | |
1506 | 1319 __ addptr(rsp, Interpreter::stackElementSize); |
0 | 1320 break; |
1321 case div: | |
1322 __ movflt(xmm1, xmm0); | |
1323 __ pop_f(xmm0); | |
1324 __ divss(xmm0, xmm1); | |
1325 break; | |
1326 case rem: | |
1327 __ movflt(xmm1, xmm0); | |
1328 __ pop_f(xmm0); | |
1329 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::frem), 2); | |
1330 break; | |
1331 default: | |
1332 ShouldNotReachHere(); | |
1333 break; | |
1334 } | |
1335 } | |
1336 | |
1337 void TemplateTable::dop2(Operation op) { | |
1338 transition(dtos, dtos); | |
1339 switch (op) { | |
1340 case add: | |
1341 __ addsd(xmm0, at_rsp()); | |
1506 | 1342 __ addptr(rsp, 2 * Interpreter::stackElementSize); |
0 | 1343 break; |
1344 case sub: | |
1345 __ movdbl(xmm1, xmm0); | |
1346 __ pop_d(xmm0); | |
1347 __ subsd(xmm0, xmm1); | |
1348 break; | |
1349 case mul: | |
1350 __ mulsd(xmm0, at_rsp()); | |
1506 | 1351 __ addptr(rsp, 2 * Interpreter::stackElementSize); |
0 | 1352 break; |
1353 case div: | |
1354 __ movdbl(xmm1, xmm0); | |
1355 __ pop_d(xmm0); | |
1356 __ divsd(xmm0, xmm1); | |
1357 break; | |
1358 case rem: | |
1359 __ movdbl(xmm1, xmm0); | |
1360 __ pop_d(xmm0); | |
1361 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::drem), 2); | |
1362 break; | |
1363 default: | |
1364 ShouldNotReachHere(); | |
1365 break; | |
1366 } | |
1367 } | |
1368 | |
1369 void TemplateTable::ineg() { | |
1370 transition(itos, itos); | |
1371 __ negl(rax); | |
1372 } | |
1373 | |
1374 void TemplateTable::lneg() { | |
1375 transition(ltos, ltos); | |
1376 __ negq(rax); | |
1377 } | |
1378 | |
1379 // Note: 'double' and 'long long' have 32-bits alignment on x86. | |
1380 static jlong* double_quadword(jlong *adr, jlong lo, jlong hi) { | |
1381 // Use the expression (adr)&(~0xF) to provide 128-bits aligned address | |
1382 // of 128-bits operands for SSE instructions. | |
1383 jlong *operand = (jlong*)(((intptr_t)adr)&((intptr_t)(~0xF))); | |
1384 // Store the value to a 128-bits operand. | |
1385 operand[0] = lo; | |
1386 operand[1] = hi; | |
1387 return operand; | |
1388 } | |
1389 | |
1390 // Buffer for 128-bits masks used by SSE instructions. | |
1391 static jlong float_signflip_pool[2*2]; | |
1392 static jlong double_signflip_pool[2*2]; | |
1393 | |
1394 void TemplateTable::fneg() { | |
1395 transition(ftos, ftos); | |
1396 static jlong *float_signflip = double_quadword(&float_signflip_pool[1], 0x8000000080000000, 0x8000000080000000); | |
1397 __ xorps(xmm0, ExternalAddress((address) float_signflip)); | |
1398 } | |
1399 | |
1400 void TemplateTable::dneg() { | |
1401 transition(dtos, dtos); | |
1402 static jlong *double_signflip = double_quadword(&double_signflip_pool[1], 0x8000000000000000, 0x8000000000000000); | |
1403 __ xorpd(xmm0, ExternalAddress((address) double_signflip)); | |
1404 } | |
1405 | |
1406 void TemplateTable::iinc() { | |
1407 transition(vtos, vtos); | |
1408 __ load_signed_byte(rdx, at_bcp(2)); // get constant | |
1409 locals_index(rbx); | |
1410 __ addl(iaddress(rbx), rdx); | |
1411 } | |
1412 | |
1413 void TemplateTable::wide_iinc() { | |
1414 transition(vtos, vtos); | |
1415 __ movl(rdx, at_bcp(4)); // get constant | |
1416 locals_index_wide(rbx); | |
1417 __ bswapl(rdx); // swap bytes & sign-extend constant | |
1418 __ sarl(rdx, 16); | |
1419 __ addl(iaddress(rbx), rdx); | |
1420 // Note: should probably use only one movl to get both | |
1421 // the index and the constant -> fix this | |
1422 } | |
1423 | |
1424 void TemplateTable::convert() { | |
1425 // Checking | |
1426 #ifdef ASSERT | |
1427 { | |
1428 TosState tos_in = ilgl; | |
1429 TosState tos_out = ilgl; | |
1430 switch (bytecode()) { | |
1431 case Bytecodes::_i2l: // fall through | |
1432 case Bytecodes::_i2f: // fall through | |
1433 case Bytecodes::_i2d: // fall through | |
1434 case Bytecodes::_i2b: // fall through | |
1435 case Bytecodes::_i2c: // fall through | |
1436 case Bytecodes::_i2s: tos_in = itos; break; | |
1437 case Bytecodes::_l2i: // fall through | |
1438 case Bytecodes::_l2f: // fall through | |
1439 case Bytecodes::_l2d: tos_in = ltos; break; | |
1440 case Bytecodes::_f2i: // fall through | |
1441 case Bytecodes::_f2l: // fall through | |
1442 case Bytecodes::_f2d: tos_in = ftos; break; | |
1443 case Bytecodes::_d2i: // fall through | |
1444 case Bytecodes::_d2l: // fall through | |
1445 case Bytecodes::_d2f: tos_in = dtos; break; | |
1446 default : ShouldNotReachHere(); | |
1447 } | |
1448 switch (bytecode()) { | |
1449 case Bytecodes::_l2i: // fall through | |
1450 case Bytecodes::_f2i: // fall through | |
1451 case Bytecodes::_d2i: // fall through | |
1452 case Bytecodes::_i2b: // fall through | |
1453 case Bytecodes::_i2c: // fall through | |
1454 case Bytecodes::_i2s: tos_out = itos; break; | |
1455 case Bytecodes::_i2l: // fall through | |
1456 case Bytecodes::_f2l: // fall through | |
1457 case Bytecodes::_d2l: tos_out = ltos; break; | |
1458 case Bytecodes::_i2f: // fall through | |
1459 case Bytecodes::_l2f: // fall through | |
1460 case Bytecodes::_d2f: tos_out = ftos; break; | |
1461 case Bytecodes::_i2d: // fall through | |
1462 case Bytecodes::_l2d: // fall through | |
1463 case Bytecodes::_f2d: tos_out = dtos; break; | |
1464 default : ShouldNotReachHere(); | |
1465 } | |
1466 transition(tos_in, tos_out); | |
1467 } | |
1468 #endif // ASSERT | |
1469 | |
1470 static const int64_t is_nan = 0x8000000000000000L; | |
1471 | |
1472 // Conversion | |
1473 switch (bytecode()) { | |
1474 case Bytecodes::_i2l: | |
1475 __ movslq(rax, rax); | |
1476 break; | |
1477 case Bytecodes::_i2f: | |
1478 __ cvtsi2ssl(xmm0, rax); | |
1479 break; | |
1480 case Bytecodes::_i2d: | |
1481 __ cvtsi2sdl(xmm0, rax); | |
1482 break; | |
1483 case Bytecodes::_i2b: | |
1484 __ movsbl(rax, rax); | |
1485 break; | |
1486 case Bytecodes::_i2c: | |
1487 __ movzwl(rax, rax); | |
1488 break; | |
1489 case Bytecodes::_i2s: | |
1490 __ movswl(rax, rax); | |
1491 break; | |
1492 case Bytecodes::_l2i: | |
1493 __ movl(rax, rax); | |
1494 break; | |
1495 case Bytecodes::_l2f: | |
1496 __ cvtsi2ssq(xmm0, rax); | |
1497 break; | |
1498 case Bytecodes::_l2d: | |
1499 __ cvtsi2sdq(xmm0, rax); | |
1500 break; | |
1501 case Bytecodes::_f2i: | |
1502 { | |
1503 Label L; | |
1504 __ cvttss2sil(rax, xmm0); | |
1505 __ cmpl(rax, 0x80000000); // NaN or overflow/underflow? | |
1506 __ jcc(Assembler::notEqual, L); | |
1507 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1); | |
1508 __ bind(L); | |
1509 } | |
1510 break; | |
1511 case Bytecodes::_f2l: | |
1512 { | |
1513 Label L; | |
1514 __ cvttss2siq(rax, xmm0); | |
1515 // NaN or overflow/underflow? | |
1516 __ cmp64(rax, ExternalAddress((address) &is_nan)); | |
1517 __ jcc(Assembler::notEqual, L); | |
1518 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1); | |
1519 __ bind(L); | |
1520 } | |
1521 break; | |
1522 case Bytecodes::_f2d: | |
1523 __ cvtss2sd(xmm0, xmm0); | |
1524 break; | |
1525 case Bytecodes::_d2i: | |
1526 { | |
1527 Label L; | |
1528 __ cvttsd2sil(rax, xmm0); | |
1529 __ cmpl(rax, 0x80000000); // NaN or overflow/underflow? | |
1530 __ jcc(Assembler::notEqual, L); | |
1531 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 1); | |
1532 __ bind(L); | |
1533 } | |
1534 break; | |
1535 case Bytecodes::_d2l: | |
1536 { | |
1537 Label L; | |
1538 __ cvttsd2siq(rax, xmm0); | |
1539 // NaN or overflow/underflow? | |
1540 __ cmp64(rax, ExternalAddress((address) &is_nan)); | |
1541 __ jcc(Assembler::notEqual, L); | |
1542 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 1); | |
1543 __ bind(L); | |
1544 } | |
1545 break; | |
1546 case Bytecodes::_d2f: | |
1547 __ cvtsd2ss(xmm0, xmm0); | |
1548 break; | |
1549 default: | |
1550 ShouldNotReachHere(); | |
1551 } | |
1552 } | |
1553 | |
1554 void TemplateTable::lcmp() { | |
1555 transition(ltos, itos); | |
1556 Label done; | |
1557 __ pop_l(rdx); | |
1558 __ cmpq(rdx, rax); | |
1559 __ movl(rax, -1); | |
1560 __ jccb(Assembler::less, done); | |
1561 __ setb(Assembler::notEqual, rax); | |
1562 __ movzbl(rax, rax); | |
1563 __ bind(done); | |
1564 } | |
1565 | |
1566 void TemplateTable::float_cmp(bool is_float, int unordered_result) { | |
1567 Label done; | |
1568 if (is_float) { | |
1569 // XXX get rid of pop here, use ... reg, mem32 | |
1570 __ pop_f(xmm1); | |
1571 __ ucomiss(xmm1, xmm0); | |
1572 } else { | |
1573 // XXX get rid of pop here, use ... reg, mem64 | |
1574 __ pop_d(xmm1); | |
1575 __ ucomisd(xmm1, xmm0); | |
1576 } | |
1577 if (unordered_result < 0) { | |
1578 __ movl(rax, -1); | |
1579 __ jccb(Assembler::parity, done); | |
1580 __ jccb(Assembler::below, done); | |
1581 __ setb(Assembler::notEqual, rdx); | |
1582 __ movzbl(rax, rdx); | |
1583 } else { | |
1584 __ movl(rax, 1); | |
1585 __ jccb(Assembler::parity, done); | |
1586 __ jccb(Assembler::above, done); | |
1587 __ movl(rax, 0); | |
1588 __ jccb(Assembler::equal, done); | |
1589 __ decrementl(rax); | |
1590 } | |
1591 __ bind(done); | |
1592 } | |
1593 | |
1594 void TemplateTable::branch(bool is_jsr, bool is_wide) { | |
1595 __ get_method(rcx); // rcx holds method | |
1596 __ profile_taken_branch(rax, rbx); // rax holds updated MDP, rbx | |
1597 // holds bumped taken count | |
1598 | |
1599 const ByteSize be_offset = methodOopDesc::backedge_counter_offset() + | |
1600 InvocationCounter::counter_offset(); | |
1601 const ByteSize inv_offset = methodOopDesc::invocation_counter_offset() + | |
1602 InvocationCounter::counter_offset(); | |
1603 const int method_offset = frame::interpreter_frame_method_offset * wordSize; | |
1604 | |
1605 // Load up edx with the branch displacement | |
1606 __ movl(rdx, at_bcp(1)); | |
1607 __ bswapl(rdx); | |
1608 | |
1609 if (!is_wide) { | |
1610 __ sarl(rdx, 16); | |
1611 } | |
304 | 1612 __ movl2ptr(rdx, rdx); |
0 | 1613 |
1614 // Handle all the JSR stuff here, then exit. | |
1615 // It's much shorter and cleaner than intermingling with the non-JSR | |
605 | 1616 // normal-branch stuff occurring below. |
0 | 1617 if (is_jsr) { |
1618 // Pre-load the next target bytecode into rbx | |
1619 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1, 0)); | |
1620 | |
1621 // compute return address as bci in rax | |
304 | 1622 __ lea(rax, at_bcp((is_wide ? 5 : 3) - |
0 | 1623 in_bytes(constMethodOopDesc::codes_offset()))); |
304 | 1624 __ subptr(rax, Address(rcx, methodOopDesc::const_offset())); |
0 | 1625 // Adjust the bcp in r13 by the displacement in rdx |
304 | 1626 __ addptr(r13, rdx); |
0 | 1627 // jsr returns atos that is not an oop |
1628 __ push_i(rax); | |
1629 __ dispatch_only(vtos); | |
1630 return; | |
1631 } | |
1632 | |
1633 // Normal (non-jsr) branch handling | |
1634 | |
1635 // Adjust the bcp in r13 by the displacement in rdx | |
304 | 1636 __ addptr(r13, rdx); |
0 | 1637 |
1638 assert(UseLoopCounter || !UseOnStackReplacement, | |
1639 "on-stack-replacement requires loop counters"); | |
1640 Label backedge_counter_overflow; | |
1641 Label profile_method; | |
1642 Label dispatch; | |
1643 if (UseLoopCounter) { | |
1644 // increment backedge counter for backward branches | |
1645 // rax: MDO | |
1646 // ebx: MDO bumped taken-count | |
1647 // rcx: method | |
1648 // rdx: target offset | |
1649 // r13: target bcp | |
1650 // r14: locals pointer | |
1651 __ testl(rdx, rdx); // check if forward or backward branch | |
1652 __ jcc(Assembler::positive, dispatch); // count only if backward branch | |
1783 | 1653 if (TieredCompilation) { |
1654 Label no_mdo; | |
1655 int increment = InvocationCounter::count_increment; | |
1656 int mask = ((1 << Tier0BackedgeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
1657 if (ProfileInterpreter) { | |
1658 // Are we profiling? | |
1659 __ movptr(rbx, Address(rcx, in_bytes(methodOopDesc::method_data_offset()))); | |
1660 __ testptr(rbx, rbx); | |
1661 __ jccb(Assembler::zero, no_mdo); | |
1662 // Increment the MDO backedge counter | |
1663 const Address mdo_backedge_counter(rbx, in_bytes(methodDataOopDesc::backedge_counter_offset()) + | |
1664 in_bytes(InvocationCounter::counter_offset())); | |
1665 __ increment_mask_and_jump(mdo_backedge_counter, increment, mask, | |
1666 rax, false, Assembler::zero, &backedge_counter_overflow); | |
1667 __ jmp(dispatch); | |
0 | 1668 } |
1783 | 1669 __ bind(no_mdo); |
1670 // Increment backedge counter in methodOop | |
1671 __ increment_mask_and_jump(Address(rcx, be_offset), increment, mask, | |
1672 rax, false, Assembler::zero, &backedge_counter_overflow); | |
0 | 1673 } else { |
1783 | 1674 // increment counter |
1675 __ movl(rax, Address(rcx, be_offset)); // load backedge counter | |
1676 __ incrementl(rax, InvocationCounter::count_increment); // increment counter | |
1677 __ movl(Address(rcx, be_offset), rax); // store counter | |
1678 | |
1679 __ movl(rax, Address(rcx, inv_offset)); // load invocation counter | |
1680 __ andl(rax, InvocationCounter::count_mask_value); // and the status bits | |
1681 __ addl(rax, Address(rcx, be_offset)); // add both counters | |
1682 | |
1683 if (ProfileInterpreter) { | |
1684 // Test to see if we should create a method data oop | |
0 | 1685 __ cmp32(rax, |
1783 | 1686 ExternalAddress((address) &InvocationCounter::InterpreterProfileLimit)); |
1687 __ jcc(Assembler::less, dispatch); | |
1688 | |
1689 // if no method data exists, go to profile method | |
1690 __ test_method_data_pointer(rax, profile_method); | |
1691 | |
1692 if (UseOnStackReplacement) { | |
1693 // check for overflow against ebx which is the MDO taken count | |
1694 __ cmp32(rbx, | |
1695 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1696 __ jcc(Assembler::below, dispatch); | |
1697 | |
1698 // When ProfileInterpreter is on, the backedge_count comes | |
1699 // from the methodDataOop, which value does not get reset on | |
1700 // the call to frequency_counter_overflow(). To avoid | |
1701 // excessive calls to the overflow routine while the method is | |
1702 // being compiled, add a second test to make sure the overflow | |
1703 // function is called only once every overflow_frequency. | |
1704 const int overflow_frequency = 1024; | |
1705 __ andl(rbx, overflow_frequency - 1); | |
1706 __ jcc(Assembler::zero, backedge_counter_overflow); | |
1707 | |
1708 } | |
1709 } else { | |
1710 if (UseOnStackReplacement) { | |
1711 // check for overflow against eax, which is the sum of the | |
1712 // counters | |
1713 __ cmp32(rax, | |
1714 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1715 __ jcc(Assembler::aboveEqual, backedge_counter_overflow); | |
1716 | |
1717 } | |
0 | 1718 } |
1719 } | |
1720 __ bind(dispatch); | |
1721 } | |
1722 | |
1723 // Pre-load the next target bytecode into rbx | |
1724 __ load_unsigned_byte(rbx, Address(r13, 0)); | |
1725 | |
1726 // continue with the bytecode @ target | |
1727 // eax: return bci for jsr's, unused otherwise | |
1728 // ebx: target bytecode | |
1729 // r13: target bcp | |
1730 __ dispatch_only(vtos); | |
1731 | |
1732 if (UseLoopCounter) { | |
1733 if (ProfileInterpreter) { | |
1734 // Out-of-line code to allocate method data oop. | |
1735 __ bind(profile_method); | |
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1736 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
0 | 1737 __ load_unsigned_byte(rbx, Address(r13, 0)); // restore target bytecode |
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1738 __ set_method_data_pointer_for_bcp(); |
0 | 1739 __ jmp(dispatch); |
1740 } | |
1741 | |
1742 if (UseOnStackReplacement) { | |
1743 // invocation counter overflow | |
1744 __ bind(backedge_counter_overflow); | |
304 | 1745 __ negptr(rdx); |
1746 __ addptr(rdx, r13); // branch bcp | |
0 | 1747 // IcoResult frequency_counter_overflow([JavaThread*], address branch_bcp) |
1748 __ call_VM(noreg, | |
1749 CAST_FROM_FN_PTR(address, | |
1750 InterpreterRuntime::frequency_counter_overflow), | |
1751 rdx); | |
1752 __ load_unsigned_byte(rbx, Address(r13, 0)); // restore target bytecode | |
1753 | |
1754 // rax: osr nmethod (osr ok) or NULL (osr not possible) | |
1755 // ebx: target bytecode | |
1756 // rdx: scratch | |
1757 // r14: locals pointer | |
1758 // r13: bcp | |
304 | 1759 __ testptr(rax, rax); // test result |
0 | 1760 __ jcc(Assembler::zero, dispatch); // no osr if null |
1761 // nmethod may have been invalidated (VM may block upon call_VM return) | |
1762 __ movl(rcx, Address(rax, nmethod::entry_bci_offset())); | |
1763 __ cmpl(rcx, InvalidOSREntryBci); | |
1764 __ jcc(Assembler::equal, dispatch); | |
1765 | |
1766 // We have the address of an on stack replacement routine in eax | |
1767 // We need to prepare to execute the OSR method. First we must | |
1768 // migrate the locals and monitors off of the stack. | |
1769 | |
304 | 1770 __ mov(r13, rax); // save the nmethod |
0 | 1771 |
1772 call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin)); | |
1773 | |
1774 // eax is OSR buffer, move it to expected parameter location | |
304 | 1775 __ mov(j_rarg0, rax); |
0 | 1776 |
1777 // We use j_rarg definitions here so that registers don't conflict as parameter | |
1778 // registers change across platforms as we are in the midst of a calling | |
1779 // sequence to the OSR nmethod and we don't want collision. These are NOT parameters. | |
1780 | |
1781 const Register retaddr = j_rarg2; | |
1782 const Register sender_sp = j_rarg1; | |
1783 | |
1784 // pop the interpreter frame | |
304 | 1785 __ movptr(sender_sp, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 1786 __ leave(); // remove frame anchor |
304 | 1787 __ pop(retaddr); // get return address |
1788 __ mov(rsp, sender_sp); // set sp to sender sp | |
0 | 1789 // Ensure compiled code always sees stack at proper alignment |
304 | 1790 __ andptr(rsp, -(StackAlignmentInBytes)); |
0 | 1791 |
1792 // unlike x86 we need no specialized return from compiled code | |
1793 // to the interpreter or the call stub. | |
1794 | |
1795 // push the return address | |
304 | 1796 __ push(retaddr); |
0 | 1797 |
1798 // and begin the OSR nmethod | |
1799 __ jmp(Address(r13, nmethod::osr_entry_point_offset())); | |
1800 } | |
1801 } | |
1802 } | |
1803 | |
1804 | |
1805 void TemplateTable::if_0cmp(Condition cc) { | |
1806 transition(itos, vtos); | |
1807 // assume branch is more often taken than not (loops use backward branches) | |
1808 Label not_taken; | |
1809 __ testl(rax, rax); | |
1810 __ jcc(j_not(cc), not_taken); | |
1811 branch(false, false); | |
1812 __ bind(not_taken); | |
1813 __ profile_not_taken_branch(rax); | |
1814 } | |
1815 | |
1816 void TemplateTable::if_icmp(Condition cc) { | |
1817 transition(itos, vtos); | |
1818 // assume branch is more often taken than not (loops use backward branches) | |
1819 Label not_taken; | |
1820 __ pop_i(rdx); | |
1821 __ cmpl(rdx, rax); | |
1822 __ jcc(j_not(cc), not_taken); | |
1823 branch(false, false); | |
1824 __ bind(not_taken); | |
1825 __ profile_not_taken_branch(rax); | |
1826 } | |
1827 | |
1828 void TemplateTable::if_nullcmp(Condition cc) { | |
1829 transition(atos, vtos); | |
1830 // assume branch is more often taken than not (loops use backward branches) | |
1831 Label not_taken; | |
304 | 1832 __ testptr(rax, rax); |
0 | 1833 __ jcc(j_not(cc), not_taken); |
1834 branch(false, false); | |
1835 __ bind(not_taken); | |
1836 __ profile_not_taken_branch(rax); | |
1837 } | |
1838 | |
1839 void TemplateTable::if_acmp(Condition cc) { | |
1840 transition(atos, vtos); | |
1841 // assume branch is more often taken than not (loops use backward branches) | |
1842 Label not_taken; | |
1843 __ pop_ptr(rdx); | |
304 | 1844 __ cmpptr(rdx, rax); |
0 | 1845 __ jcc(j_not(cc), not_taken); |
1846 branch(false, false); | |
1847 __ bind(not_taken); | |
1848 __ profile_not_taken_branch(rax); | |
1849 } | |
1850 | |
1851 void TemplateTable::ret() { | |
1852 transition(vtos, vtos); | |
1853 locals_index(rbx); | |
304 | 1854 __ movslq(rbx, iaddress(rbx)); // get return bci, compute return bcp |
0 | 1855 __ profile_ret(rbx, rcx); |
1856 __ get_method(rax); | |
304 | 1857 __ movptr(r13, Address(rax, methodOopDesc::const_offset())); |
1858 __ lea(r13, Address(r13, rbx, Address::times_1, | |
1859 constMethodOopDesc::codes_offset())); | |
0 | 1860 __ dispatch_next(vtos); |
1861 } | |
1862 | |
1863 void TemplateTable::wide_ret() { | |
1864 transition(vtos, vtos); | |
1865 locals_index_wide(rbx); | |
304 | 1866 __ movptr(rbx, aaddress(rbx)); // get return bci, compute return bcp |
0 | 1867 __ profile_ret(rbx, rcx); |
1868 __ get_method(rax); | |
304 | 1869 __ movptr(r13, Address(rax, methodOopDesc::const_offset())); |
1870 __ lea(r13, Address(r13, rbx, Address::times_1, constMethodOopDesc::codes_offset())); | |
0 | 1871 __ dispatch_next(vtos); |
1872 } | |
1873 | |
1874 void TemplateTable::tableswitch() { | |
1875 Label default_case, continue_execution; | |
1876 transition(itos, vtos); | |
1877 // align r13 | |
304 | 1878 __ lea(rbx, at_bcp(BytesPerInt)); |
1879 __ andptr(rbx, -BytesPerInt); | |
0 | 1880 // load lo & hi |
1881 __ movl(rcx, Address(rbx, BytesPerInt)); | |
1882 __ movl(rdx, Address(rbx, 2 * BytesPerInt)); | |
1883 __ bswapl(rcx); | |
1884 __ bswapl(rdx); | |
1885 // check against lo & hi | |
1886 __ cmpl(rax, rcx); | |
1887 __ jcc(Assembler::less, default_case); | |
1888 __ cmpl(rax, rdx); | |
1889 __ jcc(Assembler::greater, default_case); | |
1890 // lookup dispatch offset | |
1891 __ subl(rax, rcx); | |
1892 __ movl(rdx, Address(rbx, rax, Address::times_4, 3 * BytesPerInt)); | |
1893 __ profile_switch_case(rax, rbx, rcx); | |
1894 // continue execution | |
1895 __ bind(continue_execution); | |
1896 __ bswapl(rdx); | |
304 | 1897 __ movl2ptr(rdx, rdx); |
0 | 1898 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1)); |
304 | 1899 __ addptr(r13, rdx); |
0 | 1900 __ dispatch_only(vtos); |
1901 // handle default | |
1902 __ bind(default_case); | |
1903 __ profile_switch_default(rax); | |
1904 __ movl(rdx, Address(rbx, 0)); | |
1905 __ jmp(continue_execution); | |
1906 } | |
1907 | |
1908 void TemplateTable::lookupswitch() { | |
1909 transition(itos, itos); | |
1910 __ stop("lookupswitch bytecode should have been rewritten"); | |
1911 } | |
1912 | |
1913 void TemplateTable::fast_linearswitch() { | |
1914 transition(itos, vtos); | |
1915 Label loop_entry, loop, found, continue_execution; | |
1916 // bswap rax so we can avoid bswapping the table entries | |
1917 __ bswapl(rax); | |
1918 // align r13 | |
304 | 1919 __ lea(rbx, at_bcp(BytesPerInt)); // btw: should be able to get rid of |
1920 // this instruction (change offsets | |
1921 // below) | |
1922 __ andptr(rbx, -BytesPerInt); | |
0 | 1923 // set counter |
1924 __ movl(rcx, Address(rbx, BytesPerInt)); | |
1925 __ bswapl(rcx); | |
1926 __ jmpb(loop_entry); | |
1927 // table search | |
1928 __ bind(loop); | |
1929 __ cmpl(rax, Address(rbx, rcx, Address::times_8, 2 * BytesPerInt)); | |
1930 __ jcc(Assembler::equal, found); | |
1931 __ bind(loop_entry); | |
1932 __ decrementl(rcx); | |
1933 __ jcc(Assembler::greaterEqual, loop); | |
1934 // default case | |
1935 __ profile_switch_default(rax); | |
1936 __ movl(rdx, Address(rbx, 0)); | |
1937 __ jmp(continue_execution); | |
1938 // entry found -> get offset | |
1939 __ bind(found); | |
1940 __ movl(rdx, Address(rbx, rcx, Address::times_8, 3 * BytesPerInt)); | |
1941 __ profile_switch_case(rcx, rax, rbx); | |
1942 // continue execution | |
1943 __ bind(continue_execution); | |
1944 __ bswapl(rdx); | |
304 | 1945 __ movl2ptr(rdx, rdx); |
0 | 1946 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1)); |
304 | 1947 __ addptr(r13, rdx); |
0 | 1948 __ dispatch_only(vtos); |
1949 } | |
1950 | |
1951 void TemplateTable::fast_binaryswitch() { | |
1952 transition(itos, vtos); | |
1953 // Implementation using the following core algorithm: | |
1954 // | |
1955 // int binary_search(int key, LookupswitchPair* array, int n) { | |
1956 // // Binary search according to "Methodik des Programmierens" by | |
1957 // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985. | |
1958 // int i = 0; | |
1959 // int j = n; | |
1960 // while (i+1 < j) { | |
1961 // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q) | |
1962 // // with Q: for all i: 0 <= i < n: key < a[i] | |
1963 // // where a stands for the array and assuming that the (inexisting) | |
1964 // // element a[n] is infinitely big. | |
1965 // int h = (i + j) >> 1; | |
1966 // // i < h < j | |
1967 // if (key < array[h].fast_match()) { | |
1968 // j = h; | |
1969 // } else { | |
1970 // i = h; | |
1971 // } | |
1972 // } | |
1973 // // R: a[i] <= key < a[i+1] or Q | |
1974 // // (i.e., if key is within array, i is the correct index) | |
1975 // return i; | |
1976 // } | |
1977 | |
1978 // Register allocation | |
1979 const Register key = rax; // already set (tosca) | |
1980 const Register array = rbx; | |
1981 const Register i = rcx; | |
1982 const Register j = rdx; | |
1983 const Register h = rdi; | |
1984 const Register temp = rsi; | |
1985 | |
1986 // Find array start | |
304 | 1987 __ lea(array, at_bcp(3 * BytesPerInt)); // btw: should be able to |
1988 // get rid of this | |
1989 // instruction (change | |
1990 // offsets below) | |
1991 __ andptr(array, -BytesPerInt); | |
0 | 1992 |
1993 // Initialize i & j | |
1994 __ xorl(i, i); // i = 0; | |
1995 __ movl(j, Address(array, -BytesPerInt)); // j = length(array); | |
1996 | |
1997 // Convert j into native byteordering | |
1998 __ bswapl(j); | |
1999 | |
2000 // And start | |
2001 Label entry; | |
2002 __ jmp(entry); | |
2003 | |
2004 // binary search loop | |
2005 { | |
2006 Label loop; | |
2007 __ bind(loop); | |
2008 // int h = (i + j) >> 1; | |
2009 __ leal(h, Address(i, j, Address::times_1)); // h = i + j; | |
2010 __ sarl(h, 1); // h = (i + j) >> 1; | |
2011 // if (key < array[h].fast_match()) { | |
2012 // j = h; | |
2013 // } else { | |
2014 // i = h; | |
2015 // } | |
2016 // Convert array[h].match to native byte-ordering before compare | |
2017 __ movl(temp, Address(array, h, Address::times_8)); | |
2018 __ bswapl(temp); | |
2019 __ cmpl(key, temp); | |
2020 // j = h if (key < array[h].fast_match()) | |
2021 __ cmovl(Assembler::less, j, h); | |
2022 // i = h if (key >= array[h].fast_match()) | |
2023 __ cmovl(Assembler::greaterEqual, i, h); | |
2024 // while (i+1 < j) | |
2025 __ bind(entry); | |
2026 __ leal(h, Address(i, 1)); // i+1 | |
2027 __ cmpl(h, j); // i+1 < j | |
2028 __ jcc(Assembler::less, loop); | |
2029 } | |
2030 | |
2031 // end of binary search, result index is i (must check again!) | |
2032 Label default_case; | |
2033 // Convert array[i].match to native byte-ordering before compare | |
2034 __ movl(temp, Address(array, i, Address::times_8)); | |
2035 __ bswapl(temp); | |
2036 __ cmpl(key, temp); | |
2037 __ jcc(Assembler::notEqual, default_case); | |
2038 | |
2039 // entry found -> j = offset | |
2040 __ movl(j , Address(array, i, Address::times_8, BytesPerInt)); | |
2041 __ profile_switch_case(i, key, array); | |
2042 __ bswapl(j); | |
304 | 2043 __ movl2ptr(j, j); |
0 | 2044 __ load_unsigned_byte(rbx, Address(r13, j, Address::times_1)); |
304 | 2045 __ addptr(r13, j); |
0 | 2046 __ dispatch_only(vtos); |
2047 | |
2048 // default case -> j = default offset | |
2049 __ bind(default_case); | |
2050 __ profile_switch_default(i); | |
2051 __ movl(j, Address(array, -2 * BytesPerInt)); | |
2052 __ bswapl(j); | |
304 | 2053 __ movl2ptr(j, j); |
0 | 2054 __ load_unsigned_byte(rbx, Address(r13, j, Address::times_1)); |
304 | 2055 __ addptr(r13, j); |
0 | 2056 __ dispatch_only(vtos); |
2057 } | |
2058 | |
2059 | |
2060 void TemplateTable::_return(TosState state) { | |
2061 transition(state, state); | |
2062 assert(_desc->calls_vm(), | |
2063 "inconsistent calls_vm information"); // call in remove_activation | |
2064 | |
2065 if (_desc->bytecode() == Bytecodes::_return_register_finalizer) { | |
2066 assert(state == vtos, "only valid state"); | |
304 | 2067 __ movptr(c_rarg1, aaddress(0)); |
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2068 __ load_klass(rdi, c_rarg1); |
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2069 __ movl(rdi, Address(rdi, Klass::access_flags_offset())); |
0 | 2070 __ testl(rdi, JVM_ACC_HAS_FINALIZER); |
2071 Label skip_register_finalizer; | |
2072 __ jcc(Assembler::zero, skip_register_finalizer); | |
2073 | |
2074 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), c_rarg1); | |
2075 | |
2076 __ bind(skip_register_finalizer); | |
2077 } | |
2078 | |
2079 __ remove_activation(state, r13); | |
2080 __ jmp(r13); | |
2081 } | |
2082 | |
2083 // ---------------------------------------------------------------------------- | |
2084 // Volatile variables demand their effects be made known to all CPU's | |
2085 // in order. Store buffers on most chips allow reads & writes to | |
2086 // reorder; the JMM's ReadAfterWrite.java test fails in -Xint mode | |
2087 // without some kind of memory barrier (i.e., it's not sufficient that | |
2088 // the interpreter does not reorder volatile references, the hardware | |
2089 // also must not reorder them). | |
2090 // | |
2091 // According to the new Java Memory Model (JMM): | |
2092 // (1) All volatiles are serialized wrt to each other. ALSO reads & | |
2093 // writes act as aquire & release, so: | |
2094 // (2) A read cannot let unrelated NON-volatile memory refs that | |
2095 // happen after the read float up to before the read. It's OK for | |
2096 // non-volatile memory refs that happen before the volatile read to | |
2097 // float down below it. | |
2098 // (3) Similar a volatile write cannot let unrelated NON-volatile | |
2099 // memory refs that happen BEFORE the write float down to after the | |
2100 // write. It's OK for non-volatile memory refs that happen after the | |
2101 // volatile write to float up before it. | |
2102 // | |
2103 // We only put in barriers around volatile refs (they are expensive), | |
2104 // not _between_ memory refs (that would require us to track the | |
2105 // flavor of the previous memory refs). Requirements (2) and (3) | |
2106 // require some barriers before volatile stores and after volatile | |
2107 // loads. These nearly cover requirement (1) but miss the | |
2108 // volatile-store-volatile-load case. This final case is placed after | |
2109 // volatile-stores although it could just as well go before | |
2110 // volatile-loads. | |
2111 void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits | |
2112 order_constraint) { | |
2113 // Helper function to insert a is-volatile test and memory barrier | |
2114 if (os::is_MP()) { // Not needed on single CPU | |
2115 __ membar(order_constraint); | |
2116 } | |
2117 } | |
2118 | |
1565 | 2119 void TemplateTable::resolve_cache_and_index(int byte_no, |
2120 Register result, | |
2121 Register Rcache, | |
2122 Register index, | |
2123 size_t index_size) { | |
0 | 2124 const Register temp = rbx; |
1565 | 2125 assert_different_registers(result, Rcache, index, temp); |
2126 | |
0 | 2127 Label resolved; |
1565 | 2128 if (byte_no == f1_oop) { |
2129 // We are resolved if the f1 field contains a non-null object (CallSite, etc.) | |
2130 // This kind of CP cache entry does not need to match the flags byte, because | |
2131 // there is a 1-1 relation between bytecode type and CP entry type. | |
2132 assert(result != noreg, ""); //else do cmpptr(Address(...), (int32_t) NULL_WORD) | |
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2133 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size); |
1565 | 2134 __ movptr(result, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f1_offset())); |
2135 __ testptr(result, result); | |
1108 | 2136 __ jcc(Assembler::notEqual, resolved); |
2137 } else { | |
1565 | 2138 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range"); |
2139 assert(result == noreg, ""); //else change code for setting result | |
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2140 __ get_cache_and_index_and_bytecode_at_bcp(Rcache, index, temp, byte_no, 1, index_size); |
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2141 __ cmpl(temp, (int) bytecode()); // have we resolved this bytecode? |
1108 | 2142 __ jcc(Assembler::equal, resolved); |
2143 } | |
0 | 2144 |
2145 // resolve first time through | |
2146 address entry; | |
2147 switch (bytecode()) { | |
2148 case Bytecodes::_getstatic: | |
2149 case Bytecodes::_putstatic: | |
2150 case Bytecodes::_getfield: | |
2151 case Bytecodes::_putfield: | |
2152 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put); | |
2153 break; | |
2154 case Bytecodes::_invokevirtual: | |
2155 case Bytecodes::_invokespecial: | |
2156 case Bytecodes::_invokestatic: | |
2157 case Bytecodes::_invokeinterface: | |
2158 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); | |
2159 break; | |
1108 | 2160 case Bytecodes::_invokedynamic: |
2161 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic); | |
2162 break; | |
1602 | 2163 case Bytecodes::_fast_aldc: |
2164 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); | |
2165 break; | |
2166 case Bytecodes::_fast_aldc_w: | |
2167 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); | |
2168 break; | |
0 | 2169 default: |
2170 ShouldNotReachHere(); | |
2171 break; | |
2172 } | |
2173 __ movl(temp, (int) bytecode()); | |
2174 __ call_VM(noreg, entry, temp); | |
2175 | |
2176 // Update registers with resolved info | |
1565 | 2177 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size); |
2178 if (result != noreg) | |
2179 __ movptr(result, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f1_offset())); | |
0 | 2180 __ bind(resolved); |
2181 } | |
2182 | |
2183 // The Rcache and index registers must be set before call | |
2184 void TemplateTable::load_field_cp_cache_entry(Register obj, | |
2185 Register cache, | |
2186 Register index, | |
2187 Register off, | |
2188 Register flags, | |
2189 bool is_static = false) { | |
2190 assert_different_registers(cache, index, flags, off); | |
2191 | |
2192 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset(); | |
2193 // Field offset | |
304 | 2194 __ movptr(off, Address(cache, index, Address::times_8, |
2195 in_bytes(cp_base_offset + | |
2196 ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2197 // Flags |
2198 __ movl(flags, Address(cache, index, Address::times_8, | |
2199 in_bytes(cp_base_offset + | |
2200 ConstantPoolCacheEntry::flags_offset()))); | |
2201 | |
2202 // klass overwrite register | |
2203 if (is_static) { | |
304 | 2204 __ movptr(obj, Address(cache, index, Address::times_8, |
2205 in_bytes(cp_base_offset + | |
2206 ConstantPoolCacheEntry::f1_offset()))); | |
0 | 2207 } |
2208 } | |
2209 | |
2210 void TemplateTable::load_invoke_cp_cache_entry(int byte_no, | |
2211 Register method, | |
2212 Register itable_index, | |
2213 Register flags, | |
2214 bool is_invokevirtual, | |
1565 | 2215 bool is_invokevfinal, /*unused*/ |
2216 bool is_invokedynamic) { | |
0 | 2217 // setup registers |
2218 const Register cache = rcx; | |
2219 const Register index = rdx; | |
2220 assert_different_registers(method, flags); | |
2221 assert_different_registers(method, cache, index); | |
2222 assert_different_registers(itable_index, flags); | |
2223 assert_different_registers(itable_index, cache, index); | |
2224 // determine constant pool cache field offsets | |
2225 const int method_offset = in_bytes( | |
2226 constantPoolCacheOopDesc::base_offset() + | |
2227 (is_invokevirtual | |
2228 ? ConstantPoolCacheEntry::f2_offset() | |
2229 : ConstantPoolCacheEntry::f1_offset())); | |
2230 const int flags_offset = in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2231 ConstantPoolCacheEntry::flags_offset()); | |
2232 // access constant pool cache fields | |
2233 const int index_offset = in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2234 ConstantPoolCacheEntry::f2_offset()); | |
2235 | |
1565 | 2236 if (byte_no == f1_oop) { |
2237 // Resolved f1_oop goes directly into 'method' register. | |
2238 assert(is_invokedynamic, ""); | |
2239 resolve_cache_and_index(byte_no, method, cache, index, sizeof(u4)); | |
2240 } else { | |
2241 resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2)); | |
2242 __ movptr(method, Address(cache, index, Address::times_ptr, method_offset)); | |
2243 } | |
0 | 2244 if (itable_index != noreg) { |
1565 | 2245 __ movptr(itable_index, Address(cache, index, Address::times_ptr, index_offset)); |
0 | 2246 } |
1565 | 2247 __ movl(flags, Address(cache, index, Address::times_ptr, flags_offset)); |
0 | 2248 } |
2249 | |
2250 | |
2251 // The registers cache and index expected to be set before call. | |
2252 // Correct values of the cache and index registers are preserved. | |
2253 void TemplateTable::jvmti_post_field_access(Register cache, Register index, | |
2254 bool is_static, bool has_tos) { | |
2255 // do the JVMTI work here to avoid disturbing the register state below | |
2256 // We use c_rarg registers here because we want to use the register used in | |
2257 // the call to the VM | |
2258 if (JvmtiExport::can_post_field_access()) { | |
2259 // Check to see if a field access watch has been set before we | |
2260 // take the time to call into the VM. | |
2261 Label L1; | |
2262 assert_different_registers(cache, index, rax); | |
2263 __ mov32(rax, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2264 __ testl(rax, rax); | |
2265 __ jcc(Assembler::zero, L1); | |
2266 | |
2267 __ get_cache_and_index_at_bcp(c_rarg2, c_rarg3, 1); | |
2268 | |
2269 // cache entry pointer | |
304 | 2270 __ addptr(c_rarg2, in_bytes(constantPoolCacheOopDesc::base_offset())); |
0 | 2271 __ shll(c_rarg3, LogBytesPerWord); |
304 | 2272 __ addptr(c_rarg2, c_rarg3); |
0 | 2273 if (is_static) { |
2274 __ xorl(c_rarg1, c_rarg1); // NULL object reference | |
2275 } else { | |
304 | 2276 __ movptr(c_rarg1, at_tos()); // get object pointer without popping it |
0 | 2277 __ verify_oop(c_rarg1); |
2278 } | |
2279 // c_rarg1: object pointer or NULL | |
2280 // c_rarg2: cache entry pointer | |
2281 // c_rarg3: jvalue object on the stack | |
2282 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
2283 InterpreterRuntime::post_field_access), | |
2284 c_rarg1, c_rarg2, c_rarg3); | |
2285 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2286 __ bind(L1); | |
2287 } | |
2288 } | |
2289 | |
2290 void TemplateTable::pop_and_check_object(Register r) { | |
2291 __ pop_ptr(r); | |
2292 __ null_check(r); // for field access must check obj. | |
2293 __ verify_oop(r); | |
2294 } | |
2295 | |
2296 void TemplateTable::getfield_or_static(int byte_no, bool is_static) { | |
2297 transition(vtos, vtos); | |
2298 | |
2299 const Register cache = rcx; | |
2300 const Register index = rdx; | |
2301 const Register obj = c_rarg3; | |
2302 const Register off = rbx; | |
2303 const Register flags = rax; | |
2304 const Register bc = c_rarg3; // uses same reg as obj, so don't mix them | |
2305 | |
1565 | 2306 resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2)); |
0 | 2307 jvmti_post_field_access(cache, index, is_static, false); |
2308 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2309 | |
2310 if (!is_static) { | |
2311 // obj is on the stack | |
2312 pop_and_check_object(obj); | |
2313 } | |
2314 | |
2315 const Address field(obj, off, Address::times_1); | |
2316 | |
2317 Label Done, notByte, notInt, notShort, notChar, | |
2318 notLong, notFloat, notObj, notDouble; | |
2319 | |
2320 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2321 assert(btos == 0, "change code, btos != 0"); | |
2322 | |
2323 __ andl(flags, 0x0F); | |
2324 __ jcc(Assembler::notZero, notByte); | |
2325 // btos | |
2326 __ load_signed_byte(rax, field); | |
2327 __ push(btos); | |
2328 // Rewrite bytecode to be faster | |
2329 if (!is_static) { | |
2330 patch_bytecode(Bytecodes::_fast_bgetfield, bc, rbx); | |
2331 } | |
2332 __ jmp(Done); | |
2333 | |
2334 __ bind(notByte); | |
2335 __ cmpl(flags, atos); | |
2336 __ jcc(Assembler::notEqual, notObj); | |
2337 // atos | |
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2338 __ load_heap_oop(rax, field); |
0 | 2339 __ push(atos); |
2340 if (!is_static) { | |
2341 patch_bytecode(Bytecodes::_fast_agetfield, bc, rbx); | |
2342 } | |
2343 __ jmp(Done); | |
2344 | |
2345 __ bind(notObj); | |
2346 __ cmpl(flags, itos); | |
2347 __ jcc(Assembler::notEqual, notInt); | |
2348 // itos | |
2349 __ movl(rax, field); | |
2350 __ push(itos); | |
2351 // Rewrite bytecode to be faster | |
2352 if (!is_static) { | |
2353 patch_bytecode(Bytecodes::_fast_igetfield, bc, rbx); | |
2354 } | |
2355 __ jmp(Done); | |
2356 | |
2357 __ bind(notInt); | |
2358 __ cmpl(flags, ctos); | |
2359 __ jcc(Assembler::notEqual, notChar); | |
2360 // ctos | |
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2361 __ load_unsigned_short(rax, field); |
0 | 2362 __ push(ctos); |
2363 // Rewrite bytecode to be faster | |
2364 if (!is_static) { | |
2365 patch_bytecode(Bytecodes::_fast_cgetfield, bc, rbx); | |
2366 } | |
2367 __ jmp(Done); | |
2368 | |
2369 __ bind(notChar); | |
2370 __ cmpl(flags, stos); | |
2371 __ jcc(Assembler::notEqual, notShort); | |
2372 // stos | |
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2373 __ load_signed_short(rax, field); |
0 | 2374 __ push(stos); |
2375 // Rewrite bytecode to be faster | |
2376 if (!is_static) { | |
2377 patch_bytecode(Bytecodes::_fast_sgetfield, bc, rbx); | |
2378 } | |
2379 __ jmp(Done); | |
2380 | |
2381 __ bind(notShort); | |
2382 __ cmpl(flags, ltos); | |
2383 __ jcc(Assembler::notEqual, notLong); | |
2384 // ltos | |
2385 __ movq(rax, field); | |
2386 __ push(ltos); | |
2387 // Rewrite bytecode to be faster | |
2388 if (!is_static) { | |
2389 patch_bytecode(Bytecodes::_fast_lgetfield, bc, rbx); | |
2390 } | |
2391 __ jmp(Done); | |
2392 | |
2393 __ bind(notLong); | |
2394 __ cmpl(flags, ftos); | |
2395 __ jcc(Assembler::notEqual, notFloat); | |
2396 // ftos | |
2397 __ movflt(xmm0, field); | |
2398 __ push(ftos); | |
2399 // Rewrite bytecode to be faster | |
2400 if (!is_static) { | |
2401 patch_bytecode(Bytecodes::_fast_fgetfield, bc, rbx); | |
2402 } | |
2403 __ jmp(Done); | |
2404 | |
2405 __ bind(notFloat); | |
2406 #ifdef ASSERT | |
2407 __ cmpl(flags, dtos); | |
2408 __ jcc(Assembler::notEqual, notDouble); | |
2409 #endif | |
2410 // dtos | |
2411 __ movdbl(xmm0, field); | |
2412 __ push(dtos); | |
2413 // Rewrite bytecode to be faster | |
2414 if (!is_static) { | |
2415 patch_bytecode(Bytecodes::_fast_dgetfield, bc, rbx); | |
2416 } | |
2417 #ifdef ASSERT | |
2418 __ jmp(Done); | |
2419 | |
2420 __ bind(notDouble); | |
2421 __ stop("Bad state"); | |
2422 #endif | |
2423 | |
2424 __ bind(Done); | |
2425 // [jk] not needed currently | |
2426 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadLoad | | |
2427 // Assembler::LoadStore)); | |
2428 } | |
2429 | |
2430 | |
2431 void TemplateTable::getfield(int byte_no) { | |
2432 getfield_or_static(byte_no, false); | |
2433 } | |
2434 | |
2435 void TemplateTable::getstatic(int byte_no) { | |
2436 getfield_or_static(byte_no, true); | |
2437 } | |
2438 | |
2439 // The registers cache and index expected to be set before call. | |
2440 // The function may destroy various registers, just not the cache and index registers. | |
2441 void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) { | |
2442 transition(vtos, vtos); | |
2443 | |
2444 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset(); | |
2445 | |
2446 if (JvmtiExport::can_post_field_modification()) { | |
2447 // Check to see if a field modification watch has been set before | |
2448 // we take the time to call into the VM. | |
2449 Label L1; | |
2450 assert_different_registers(cache, index, rax); | |
2451 __ mov32(rax, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
2452 __ testl(rax, rax); | |
2453 __ jcc(Assembler::zero, L1); | |
2454 | |
2455 __ get_cache_and_index_at_bcp(c_rarg2, rscratch1, 1); | |
2456 | |
2457 if (is_static) { | |
2458 // Life is simple. Null out the object pointer. | |
2459 __ xorl(c_rarg1, c_rarg1); | |
2460 } else { | |
2461 // Life is harder. The stack holds the value on top, followed by | |
2462 // the object. We don't know the size of the value, though; it | |
2463 // could be one or two words depending on its type. As a result, | |
2464 // we must find the type to determine where the object is. | |
2465 __ movl(c_rarg3, Address(c_rarg2, rscratch1, | |
2466 Address::times_8, | |
2467 in_bytes(cp_base_offset + | |
2468 ConstantPoolCacheEntry::flags_offset()))); | |
2469 __ shrl(c_rarg3, ConstantPoolCacheEntry::tosBits); | |
2470 // Make sure we don't need to mask rcx for tosBits after the | |
2471 // above shift | |
2472 ConstantPoolCacheEntry::verify_tosBits(); | |
304 | 2473 __ movptr(c_rarg1, at_tos_p1()); // initially assume a one word jvalue |
0 | 2474 __ cmpl(c_rarg3, ltos); |
304 | 2475 __ cmovptr(Assembler::equal, |
2476 c_rarg1, at_tos_p2()); // ltos (two word jvalue) | |
0 | 2477 __ cmpl(c_rarg3, dtos); |
304 | 2478 __ cmovptr(Assembler::equal, |
2479 c_rarg1, at_tos_p2()); // dtos (two word jvalue) | |
0 | 2480 } |
2481 // cache entry pointer | |
304 | 2482 __ addptr(c_rarg2, in_bytes(cp_base_offset)); |
0 | 2483 __ shll(rscratch1, LogBytesPerWord); |
304 | 2484 __ addptr(c_rarg2, rscratch1); |
0 | 2485 // object (tos) |
304 | 2486 __ mov(c_rarg3, rsp); |
0 | 2487 // c_rarg1: object pointer set up above (NULL if static) |
2488 // c_rarg2: cache entry pointer | |
2489 // c_rarg3: jvalue object on the stack | |
2490 __ call_VM(noreg, | |
2491 CAST_FROM_FN_PTR(address, | |
2492 InterpreterRuntime::post_field_modification), | |
2493 c_rarg1, c_rarg2, c_rarg3); | |
2494 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2495 __ bind(L1); | |
2496 } | |
2497 } | |
2498 | |
2499 void TemplateTable::putfield_or_static(int byte_no, bool is_static) { | |
2500 transition(vtos, vtos); | |
2501 | |
2502 const Register cache = rcx; | |
2503 const Register index = rdx; | |
2504 const Register obj = rcx; | |
2505 const Register off = rbx; | |
2506 const Register flags = rax; | |
2507 const Register bc = c_rarg3; | |
2508 | |
1565 | 2509 resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2)); |
0 | 2510 jvmti_post_field_mod(cache, index, is_static); |
2511 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2512 | |
2513 // [jk] not needed currently | |
2514 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadStore | | |
2515 // Assembler::StoreStore)); | |
2516 | |
2517 Label notVolatile, Done; | |
2518 __ movl(rdx, flags); | |
2519 __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2520 __ andl(rdx, 0x1); | |
2521 | |
2522 // field address | |
2523 const Address field(obj, off, Address::times_1); | |
2524 | |
2525 Label notByte, notInt, notShort, notChar, | |
2526 notLong, notFloat, notObj, notDouble; | |
2527 | |
2528 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2529 | |
2530 assert(btos == 0, "change code, btos != 0"); | |
2531 __ andl(flags, 0x0f); | |
2532 __ jcc(Assembler::notZero, notByte); | |
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2533 |
0 | 2534 // btos |
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2535 { |
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2536 __ pop(btos); |
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2537 if (!is_static) pop_and_check_object(obj); |
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2538 __ movb(field, rax); |
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2539 if (!is_static) { |
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2540 patch_bytecode(Bytecodes::_fast_bputfield, bc, rbx, true, byte_no); |
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2541 } |
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2542 __ jmp(Done); |
0 | 2543 } |
2544 | |
2545 __ bind(notByte); | |
2546 __ cmpl(flags, atos); | |
2547 __ jcc(Assembler::notEqual, notObj); | |
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2548 |
0 | 2549 // atos |
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2550 { |
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2551 __ pop(atos); |
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2552 if (!is_static) pop_and_check_object(obj); |
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2553 // Store into the field |
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2554 do_oop_store(_masm, field, rax, _bs->kind(), false); |
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2555 if (!is_static) { |
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2556 patch_bytecode(Bytecodes::_fast_aputfield, bc, rbx, true, byte_no); |
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2557 } |
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2558 __ jmp(Done); |
0 | 2559 } |
2560 | |
2561 __ bind(notObj); | |
2562 __ cmpl(flags, itos); | |
2563 __ jcc(Assembler::notEqual, notInt); | |
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2564 |
0 | 2565 // itos |
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2566 { |
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2567 __ pop(itos); |
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2568 if (!is_static) pop_and_check_object(obj); |
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2569 __ movl(field, rax); |
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2570 if (!is_static) { |
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2571 patch_bytecode(Bytecodes::_fast_iputfield, bc, rbx, true, byte_no); |
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2572 } |
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2573 __ jmp(Done); |
0 | 2574 } |
2575 | |
2576 __ bind(notInt); | |
2577 __ cmpl(flags, ctos); | |
2578 __ jcc(Assembler::notEqual, notChar); | |
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2579 |
0 | 2580 // ctos |
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2581 { |
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2582 __ pop(ctos); |
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2583 if (!is_static) pop_and_check_object(obj); |
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2584 __ movw(field, rax); |
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2585 if (!is_static) { |
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2586 patch_bytecode(Bytecodes::_fast_cputfield, bc, rbx, true, byte_no); |
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2587 } |
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2588 __ jmp(Done); |
0 | 2589 } |
2590 | |
2591 __ bind(notChar); | |
2592 __ cmpl(flags, stos); | |
2593 __ jcc(Assembler::notEqual, notShort); | |
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2594 |
0 | 2595 // stos |
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2596 { |
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2597 __ pop(stos); |
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2598 if (!is_static) pop_and_check_object(obj); |
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2599 __ movw(field, rax); |
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2600 if (!is_static) { |
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2601 patch_bytecode(Bytecodes::_fast_sputfield, bc, rbx, true, byte_no); |
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2602 } |
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2603 __ jmp(Done); |
0 | 2604 } |
2605 | |
2606 __ bind(notShort); | |
2607 __ cmpl(flags, ltos); | |
2608 __ jcc(Assembler::notEqual, notLong); | |
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2609 |
0 | 2610 // ltos |
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2611 { |
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2612 __ pop(ltos); |
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2613 if (!is_static) pop_and_check_object(obj); |
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2614 __ movq(field, rax); |
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2615 if (!is_static) { |
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2616 patch_bytecode(Bytecodes::_fast_lputfield, bc, rbx, true, byte_no); |
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2617 } |
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2618 __ jmp(Done); |
0 | 2619 } |
2620 | |
2621 __ bind(notLong); | |
2622 __ cmpl(flags, ftos); | |
2623 __ jcc(Assembler::notEqual, notFloat); | |
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2624 |
0 | 2625 // ftos |
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2626 { |
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2627 __ pop(ftos); |
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2628 if (!is_static) pop_and_check_object(obj); |
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2629 __ movflt(field, xmm0); |
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2630 if (!is_static) { |
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2631 patch_bytecode(Bytecodes::_fast_fputfield, bc, rbx, true, byte_no); |
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2632 } |
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2633 __ jmp(Done); |
0 | 2634 } |
2635 | |
2636 __ bind(notFloat); | |
2637 #ifdef ASSERT | |
2638 __ cmpl(flags, dtos); | |
2639 __ jcc(Assembler::notEqual, notDouble); | |
2640 #endif | |
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2641 |
0 | 2642 // dtos |
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2643 { |
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2644 __ pop(dtos); |
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2645 if (!is_static) pop_and_check_object(obj); |
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2646 __ movdbl(field, xmm0); |
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2647 if (!is_static) { |
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2648 patch_bytecode(Bytecodes::_fast_dputfield, bc, rbx, true, byte_no); |
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2649 } |
0 | 2650 } |
2651 | |
2652 #ifdef ASSERT | |
2653 __ jmp(Done); | |
2654 | |
2655 __ bind(notDouble); | |
2656 __ stop("Bad state"); | |
2657 #endif | |
2658 | |
2659 __ bind(Done); | |
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2660 |
0 | 2661 // Check for volatile store |
2662 __ testl(rdx, rdx); | |
2663 __ jcc(Assembler::zero, notVolatile); | |
2664 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | | |
2665 Assembler::StoreStore)); | |
2666 __ bind(notVolatile); | |
2667 } | |
2668 | |
2669 void TemplateTable::putfield(int byte_no) { | |
2670 putfield_or_static(byte_no, false); | |
2671 } | |
2672 | |
2673 void TemplateTable::putstatic(int byte_no) { | |
2674 putfield_or_static(byte_no, true); | |
2675 } | |
2676 | |
2677 void TemplateTable::jvmti_post_fast_field_mod() { | |
2678 if (JvmtiExport::can_post_field_modification()) { | |
2679 // Check to see if a field modification watch has been set before | |
2680 // we take the time to call into the VM. | |
2681 Label L2; | |
2682 __ mov32(c_rarg3, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
2683 __ testl(c_rarg3, c_rarg3); | |
2684 __ jcc(Assembler::zero, L2); | |
2685 __ pop_ptr(rbx); // copy the object pointer from tos | |
2686 __ verify_oop(rbx); | |
2687 __ push_ptr(rbx); // put the object pointer back on tos | |
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2688 // Save tos values before call_VM() clobbers them. Since we have |
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2689 // to do it for every data type, we use the saved values as the |
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2690 // jvalue object. |
0 | 2691 switch (bytecode()) { // load values into the jvalue object |
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2692 case Bytecodes::_fast_aputfield: __ push_ptr(rax); break; |
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2693 case Bytecodes::_fast_bputfield: // fall through |
0 | 2694 case Bytecodes::_fast_sputfield: // fall through |
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2695 case Bytecodes::_fast_cputfield: // fall through |
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2696 case Bytecodes::_fast_iputfield: __ push_i(rax); break; |
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2697 case Bytecodes::_fast_dputfield: __ push_d(); break; |
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2698 case Bytecodes::_fast_fputfield: __ push_f(); break; |
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2699 case Bytecodes::_fast_lputfield: __ push_l(rax); break; |
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2700 |
0 | 2701 default: |
2702 ShouldNotReachHere(); | |
2703 } | |
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2704 __ mov(c_rarg3, rsp); // points to jvalue on the stack |
0 | 2705 // access constant pool cache entry |
2706 __ get_cache_entry_pointer_at_bcp(c_rarg2, rax, 1); | |
2707 __ verify_oop(rbx); | |
2708 // rbx: object pointer copied above | |
2709 // c_rarg2: cache entry pointer | |
2710 // c_rarg3: jvalue object on the stack | |
2711 __ call_VM(noreg, | |
2712 CAST_FROM_FN_PTR(address, | |
2713 InterpreterRuntime::post_field_modification), | |
2714 rbx, c_rarg2, c_rarg3); | |
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2715 |
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2716 switch (bytecode()) { // restore tos values |
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2717 case Bytecodes::_fast_aputfield: __ pop_ptr(rax); break; |
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2718 case Bytecodes::_fast_bputfield: // fall through |
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2719 case Bytecodes::_fast_sputfield: // fall through |
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2720 case Bytecodes::_fast_cputfield: // fall through |
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2721 case Bytecodes::_fast_iputfield: __ pop_i(rax); break; |
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2722 case Bytecodes::_fast_dputfield: __ pop_d(); break; |
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2723 case Bytecodes::_fast_fputfield: __ pop_f(); break; |
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2724 case Bytecodes::_fast_lputfield: __ pop_l(rax); break; |
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2725 } |
0 | 2726 __ bind(L2); |
2727 } | |
2728 } | |
2729 | |
2730 void TemplateTable::fast_storefield(TosState state) { | |
2731 transition(state, vtos); | |
2732 | |
2733 ByteSize base = constantPoolCacheOopDesc::base_offset(); | |
2734 | |
2735 jvmti_post_fast_field_mod(); | |
2736 | |
2737 // access constant pool cache | |
2738 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2739 | |
2740 // test for volatile with rdx | |
2741 __ movl(rdx, Address(rcx, rbx, Address::times_8, | |
2742 in_bytes(base + | |
2743 ConstantPoolCacheEntry::flags_offset()))); | |
2744 | |
2745 // replace index with field offset from cache entry | |
304 | 2746 __ movptr(rbx, Address(rcx, rbx, Address::times_8, |
2747 in_bytes(base + ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2748 |
2749 // [jk] not needed currently | |
2750 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadStore | | |
2751 // Assembler::StoreStore)); | |
2752 | |
2753 Label notVolatile; | |
2754 __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2755 __ andl(rdx, 0x1); | |
2756 | |
2757 // Get object from stack | |
2758 pop_and_check_object(rcx); | |
2759 | |
2760 // field address | |
2761 const Address field(rcx, rbx, Address::times_1); | |
2762 | |
2763 // access field | |
2764 switch (bytecode()) { | |
2765 case Bytecodes::_fast_aputfield: | |
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|
2766 do_oop_store(_masm, field, rax, _bs->kind(), false); |
0 | 2767 break; |
2768 case Bytecodes::_fast_lputfield: | |
2769 __ movq(field, rax); | |
2770 break; | |
2771 case Bytecodes::_fast_iputfield: | |
2772 __ movl(field, rax); | |
2773 break; | |
2774 case Bytecodes::_fast_bputfield: | |
2775 __ movb(field, rax); | |
2776 break; | |
2777 case Bytecodes::_fast_sputfield: | |
2778 // fall through | |
2779 case Bytecodes::_fast_cputfield: | |
2780 __ movw(field, rax); | |
2781 break; | |
2782 case Bytecodes::_fast_fputfield: | |
2783 __ movflt(field, xmm0); | |
2784 break; | |
2785 case Bytecodes::_fast_dputfield: | |
2786 __ movdbl(field, xmm0); | |
2787 break; | |
2788 default: | |
2789 ShouldNotReachHere(); | |
2790 } | |
2791 | |
2792 // Check for volatile store | |
2793 __ testl(rdx, rdx); | |
2794 __ jcc(Assembler::zero, notVolatile); | |
2795 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | | |
2796 Assembler::StoreStore)); | |
2797 __ bind(notVolatile); | |
2798 } | |
2799 | |
2800 | |
2801 void TemplateTable::fast_accessfield(TosState state) { | |
2802 transition(atos, state); | |
2803 | |
2804 // Do the JVMTI work here to avoid disturbing the register state below | |
2805 if (JvmtiExport::can_post_field_access()) { | |
2806 // Check to see if a field access watch has been set before we | |
2807 // take the time to call into the VM. | |
2808 Label L1; | |
2809 __ mov32(rcx, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2810 __ testl(rcx, rcx); | |
2811 __ jcc(Assembler::zero, L1); | |
2812 // access constant pool cache entry | |
2813 __ get_cache_entry_pointer_at_bcp(c_rarg2, rcx, 1); | |
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2814 __ verify_oop(rax); |
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2815 __ push_ptr(rax); // save object pointer before call_VM() clobbers it |
304 | 2816 __ mov(c_rarg1, rax); |
0 | 2817 // c_rarg1: object pointer copied above |
2818 // c_rarg2: cache entry pointer | |
2819 __ call_VM(noreg, | |
2820 CAST_FROM_FN_PTR(address, | |
2821 InterpreterRuntime::post_field_access), | |
2822 c_rarg1, c_rarg2); | |
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2823 __ pop_ptr(rax); // restore object pointer |
0 | 2824 __ bind(L1); |
2825 } | |
2826 | |
2827 // access constant pool cache | |
2828 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2829 // replace index with field offset from cache entry | |
2830 // [jk] not needed currently | |
2831 // if (os::is_MP()) { | |
2832 // __ movl(rdx, Address(rcx, rbx, Address::times_8, | |
2833 // in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2834 // ConstantPoolCacheEntry::flags_offset()))); | |
2835 // __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2836 // __ andl(rdx, 0x1); | |
2837 // } | |
304 | 2838 __ movptr(rbx, Address(rcx, rbx, Address::times_8, |
2839 in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2840 ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2841 |
2842 // rax: object | |
2843 __ verify_oop(rax); | |
2844 __ null_check(rax); | |
2845 Address field(rax, rbx, Address::times_1); | |
2846 | |
2847 // access field | |
2848 switch (bytecode()) { | |
2849 case Bytecodes::_fast_agetfield: | |
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2850 __ load_heap_oop(rax, field); |
0 | 2851 __ verify_oop(rax); |
2852 break; | |
2853 case Bytecodes::_fast_lgetfield: | |
2854 __ movq(rax, field); | |
2855 break; | |
2856 case Bytecodes::_fast_igetfield: | |
2857 __ movl(rax, field); | |
2858 break; | |
2859 case Bytecodes::_fast_bgetfield: | |
2860 __ movsbl(rax, field); | |
2861 break; | |
2862 case Bytecodes::_fast_sgetfield: | |
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2863 __ load_signed_short(rax, field); |
0 | 2864 break; |
2865 case Bytecodes::_fast_cgetfield: | |
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2866 __ load_unsigned_short(rax, field); |
0 | 2867 break; |
2868 case Bytecodes::_fast_fgetfield: | |
2869 __ movflt(xmm0, field); | |
2870 break; | |
2871 case Bytecodes::_fast_dgetfield: | |
2872 __ movdbl(xmm0, field); | |
2873 break; | |
2874 default: | |
2875 ShouldNotReachHere(); | |
2876 } | |
2877 // [jk] not needed currently | |
2878 // if (os::is_MP()) { | |
2879 // Label notVolatile; | |
2880 // __ testl(rdx, rdx); | |
2881 // __ jcc(Assembler::zero, notVolatile); | |
2882 // __ membar(Assembler::LoadLoad); | |
2883 // __ bind(notVolatile); | |
2884 //}; | |
2885 } | |
2886 | |
2887 void TemplateTable::fast_xaccess(TosState state) { | |
2888 transition(vtos, state); | |
2889 | |
2890 // get receiver | |
304 | 2891 __ movptr(rax, aaddress(0)); |
0 | 2892 // access constant pool cache |
2893 __ get_cache_and_index_at_bcp(rcx, rdx, 2); | |
304 | 2894 __ movptr(rbx, |
2895 Address(rcx, rdx, Address::times_8, | |
2896 in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2897 ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2898 // make sure exception is reported in correct bcp range (getfield is |
2899 // next instruction) | |
304 | 2900 __ increment(r13); |
0 | 2901 __ null_check(rax); |
2902 switch (state) { | |
2903 case itos: | |
2904 __ movl(rax, Address(rax, rbx, Address::times_1)); | |
2905 break; | |
2906 case atos: | |
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2907 __ load_heap_oop(rax, Address(rax, rbx, Address::times_1)); |
0 | 2908 __ verify_oop(rax); |
2909 break; | |
2910 case ftos: | |
2911 __ movflt(xmm0, Address(rax, rbx, Address::times_1)); | |
2912 break; | |
2913 default: | |
2914 ShouldNotReachHere(); | |
2915 } | |
2916 | |
2917 // [jk] not needed currently | |
2918 // if (os::is_MP()) { | |
2919 // Label notVolatile; | |
2920 // __ movl(rdx, Address(rcx, rdx, Address::times_8, | |
2921 // in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2922 // ConstantPoolCacheEntry::flags_offset()))); | |
2923 // __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2924 // __ testl(rdx, 0x1); | |
2925 // __ jcc(Assembler::zero, notVolatile); | |
2926 // __ membar(Assembler::LoadLoad); | |
2927 // __ bind(notVolatile); | |
2928 // } | |
2929 | |
304 | 2930 __ decrement(r13); |
0 | 2931 } |
2932 | |
2933 | |
2934 | |
2935 //----------------------------------------------------------------------------- | |
2936 // Calls | |
2937 | |
2938 void TemplateTable::count_calls(Register method, Register temp) { | |
2939 // implemented elsewhere | |
2940 ShouldNotReachHere(); | |
2941 } | |
2942 | |
1108 | 2943 void TemplateTable::prepare_invoke(Register method, Register index, int byte_no) { |
0 | 2944 // determine flags |
1108 | 2945 Bytecodes::Code code = bytecode(); |
0 | 2946 const bool is_invokeinterface = code == Bytecodes::_invokeinterface; |
1108 | 2947 const bool is_invokedynamic = code == Bytecodes::_invokedynamic; |
0 | 2948 const bool is_invokevirtual = code == Bytecodes::_invokevirtual; |
2949 const bool is_invokespecial = code == Bytecodes::_invokespecial; | |
1108 | 2950 const bool load_receiver = (code != Bytecodes::_invokestatic && code != Bytecodes::_invokedynamic); |
0 | 2951 const bool receiver_null_check = is_invokespecial; |
2952 const bool save_flags = is_invokeinterface || is_invokevirtual; | |
2953 // setup registers & access constant pool cache | |
2954 const Register recv = rcx; | |
2955 const Register flags = rdx; | |
2956 assert_different_registers(method, index, recv, flags); | |
2957 | |
2958 // save 'interpreter return address' | |
2959 __ save_bcp(); | |
2960 | |
1565 | 2961 load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual, false, is_invokedynamic); |
0 | 2962 |
2963 // load receiver if needed (note: no return address pushed yet) | |
2964 if (load_receiver) { | |
1565 | 2965 assert(!is_invokedynamic, ""); |
0 | 2966 __ movl(recv, flags); |
2967 __ andl(recv, 0xFF); | |
1108 | 2968 Address recv_addr(rsp, recv, Address::times_8, -Interpreter::expr_offset_in_bytes(1)); |
1304 | 2969 __ movptr(recv, recv_addr); |
2970 __ verify_oop(recv); | |
0 | 2971 } |
2972 | |
2973 // do null check if needed | |
2974 if (receiver_null_check) { | |
2975 __ null_check(recv); | |
2976 } | |
2977 | |
2978 if (save_flags) { | |
2979 __ movl(r13, flags); | |
2980 } | |
2981 | |
2982 // compute return type | |
2983 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2984 // Make sure we don't need to mask flags for tosBits after the above shift | |
2985 ConstantPoolCacheEntry::verify_tosBits(); | |
2986 // load return address | |
2987 { | |
1108 | 2988 address table_addr; |
2989 if (is_invokeinterface || is_invokedynamic) | |
2990 table_addr = (address)Interpreter::return_5_addrs_by_index_table(); | |
2991 else | |
2992 table_addr = (address)Interpreter::return_3_addrs_by_index_table(); | |
2993 ExternalAddress table(table_addr); | |
2994 __ lea(rscratch1, table); | |
2995 __ movptr(flags, Address(rscratch1, flags, Address::times_ptr)); | |
0 | 2996 } |
2997 | |
2998 // push return address | |
304 | 2999 __ push(flags); |
0 | 3000 |
3001 // Restore flag field from the constant pool cache, and restore esi | |
3002 // for later null checks. r13 is the bytecode pointer | |
3003 if (save_flags) { | |
3004 __ movl(flags, r13); | |
3005 __ restore_bcp(); | |
3006 } | |
3007 } | |
3008 | |
3009 | |
3010 void TemplateTable::invokevirtual_helper(Register index, | |
3011 Register recv, | |
3012 Register flags) { | |
1783 | 3013 // Uses temporary registers rax, rdx |
3014 assert_different_registers(index, recv, rax, rdx); | |
0 | 3015 |
3016 // Test for an invoke of a final method | |
3017 Label notFinal; | |
3018 __ movl(rax, flags); | |
3019 __ andl(rax, (1 << ConstantPoolCacheEntry::vfinalMethod)); | |
3020 __ jcc(Assembler::zero, notFinal); | |
3021 | |
3022 const Register method = index; // method must be rbx | |
3023 assert(method == rbx, | |
3024 "methodOop must be rbx for interpreter calling convention"); | |
3025 | |
3026 // do the call - the index is actually the method to call | |
3027 __ verify_oop(method); | |
3028 | |
3029 // It's final, need a null check here! | |
3030 __ null_check(recv); | |
3031 | |
3032 // profile this call | |
3033 __ profile_final_call(rax); | |
3034 | |
3035 __ jump_from_interpreted(method, rax); | |
3036 | |
3037 __ bind(notFinal); | |
3038 | |
3039 // get receiver klass | |
3040 __ null_check(recv, oopDesc::klass_offset_in_bytes()); | |
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3041 __ load_klass(rax, recv); |
0 | 3042 |
3043 __ verify_oop(rax); | |
3044 | |
3045 // profile this call | |
3046 __ profile_virtual_call(rax, r14, rdx); | |
3047 | |
3048 // get target methodOop & entry point | |
3049 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
3050 assert(vtableEntry::size() * wordSize == 8, | |
3051 "adjust the scaling in the code below"); | |
304 | 3052 __ movptr(method, Address(rax, index, |
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3053 Address::times_8, |
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3054 base + vtableEntry::method_offset_in_bytes())); |
304 | 3055 __ movptr(rdx, Address(method, methodOopDesc::interpreter_entry_offset())); |
0 | 3056 __ jump_from_interpreted(method, rdx); |
3057 } | |
3058 | |
3059 | |
3060 void TemplateTable::invokevirtual(int byte_no) { | |
3061 transition(vtos, vtos); | |
1565 | 3062 assert(byte_no == f2_byte, "use this argument"); |
1108 | 3063 prepare_invoke(rbx, noreg, byte_no); |
0 | 3064 |
3065 // rbx: index | |
3066 // rcx: receiver | |
3067 // rdx: flags | |
3068 | |
3069 invokevirtual_helper(rbx, rcx, rdx); | |
3070 } | |
3071 | |
3072 | |
3073 void TemplateTable::invokespecial(int byte_no) { | |
3074 transition(vtos, vtos); | |
1565 | 3075 assert(byte_no == f1_byte, "use this argument"); |
1108 | 3076 prepare_invoke(rbx, noreg, byte_no); |
0 | 3077 // do the call |
3078 __ verify_oop(rbx); | |
3079 __ profile_call(rax); | |
3080 __ jump_from_interpreted(rbx, rax); | |
3081 } | |
3082 | |
3083 | |
3084 void TemplateTable::invokestatic(int byte_no) { | |
3085 transition(vtos, vtos); | |
1565 | 3086 assert(byte_no == f1_byte, "use this argument"); |
1108 | 3087 prepare_invoke(rbx, noreg, byte_no); |
0 | 3088 // do the call |
3089 __ verify_oop(rbx); | |
3090 __ profile_call(rax); | |
3091 __ jump_from_interpreted(rbx, rax); | |
3092 } | |
3093 | |
3094 void TemplateTable::fast_invokevfinal(int byte_no) { | |
3095 transition(vtos, vtos); | |
1565 | 3096 assert(byte_no == f2_byte, "use this argument"); |
0 | 3097 __ stop("fast_invokevfinal not used on amd64"); |
3098 } | |
3099 | |
3100 void TemplateTable::invokeinterface(int byte_no) { | |
3101 transition(vtos, vtos); | |
1565 | 3102 assert(byte_no == f1_byte, "use this argument"); |
1108 | 3103 prepare_invoke(rax, rbx, byte_no); |
0 | 3104 |
3105 // rax: Interface | |
3106 // rbx: index | |
3107 // rcx: receiver | |
3108 // rdx: flags | |
3109 | |
3110 // Special case of invokeinterface called for virtual method of | |
3111 // java.lang.Object. See cpCacheOop.cpp for details. | |
3112 // This code isn't produced by javac, but could be produced by | |
3113 // another compliant java compiler. | |
3114 Label notMethod; | |
3115 __ movl(r14, rdx); | |
3116 __ andl(r14, (1 << ConstantPoolCacheEntry::methodInterface)); | |
3117 __ jcc(Assembler::zero, notMethod); | |
3118 | |
3119 invokevirtual_helper(rbx, rcx, rdx); | |
3120 __ bind(notMethod); | |
3121 | |
3122 // Get receiver klass into rdx - also a null check | |
3123 __ restore_locals(); // restore r14 | |
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3124 __ load_klass(rdx, rcx); |
0 | 3125 __ verify_oop(rdx); |
3126 | |
3127 // profile this call | |
3128 __ profile_virtual_call(rdx, r13, r14); | |
3129 | |
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3130 Label no_such_interface, no_such_method; |
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3131 |
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3132 __ lookup_interface_method(// inputs: rec. class, interface, itable index |
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3133 rdx, rax, rbx, |
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3134 // outputs: method, scan temp. reg |
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3135 rbx, r13, |
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3136 no_such_interface); |
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3137 |
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3138 // rbx,: methodOop to call |
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3139 // rcx: receiver |
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3140 // Check for abstract method error |
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3141 // Note: This should be done more efficiently via a throw_abstract_method_error |
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3142 // interpreter entry point and a conditional jump to it in case of a null |
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3143 // method. |
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3144 __ testptr(rbx, rbx); |
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3145 __ jcc(Assembler::zero, no_such_method); |
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3146 |
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3147 // do the call |
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3148 // rcx: receiver |
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3149 // rbx,: methodOop |
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3150 __ jump_from_interpreted(rbx, rdx); |
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3151 __ should_not_reach_here(); |
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3152 |
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3153 // exception handling code follows... |
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3154 // note: must restore interpreter registers to canonical |
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3155 // state for exception handling to work correctly! |
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3156 |
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3157 __ bind(no_such_method); |
0 | 3158 // throw exception |
623
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3159 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
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3160 __ restore_bcp(); // r13 must be correct for exception handler (was destroyed) |
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3161 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
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3162 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError)); |
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3163 // the call_VM checks for exception, so we should never return here. |
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3164 __ should_not_reach_here(); |
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3165 |
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3166 __ bind(no_such_interface); |
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3167 // throw exception |
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3168 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
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3169 __ restore_bcp(); // r13 must be correct for exception handler (was destroyed) |
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3170 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
0 | 3171 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
3172 InterpreterRuntime::throw_IncompatibleClassChangeError)); | |
3173 // the call_VM checks for exception, so we should never return here. | |
3174 __ should_not_reach_here(); | |
623
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3175 return; |
0 | 3176 } |
3177 | |
726
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3178 void TemplateTable::invokedynamic(int byte_no) { |
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3179 transition(vtos, vtos); |
1565 | 3180 assert(byte_no == f1_oop, "use this argument"); |
726
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3181 |
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3182 if (!EnableInvokeDynamic) { |
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3183 // We should not encounter this bytecode if !EnableInvokeDynamic. |
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3184 // The verifier will stop it. However, if we get past the verifier, |
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3185 // this will stop the thread in a reasonable way, without crashing the JVM. |
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3186 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
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3187 InterpreterRuntime::throw_IncompatibleClassChangeError)); |
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3188 // the call_VM checks for exception, so we should never return here. |
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3189 __ should_not_reach_here(); |
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3190 return; |
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3191 } |
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3192 |
1108 | 3193 prepare_invoke(rax, rbx, byte_no); |
3194 | |
3195 // rax: CallSite object (f1) | |
3196 // rbx: unused (f2) | |
3197 // rcx: receiver address | |
3198 // rdx: flags (unused) | |
3199 | |
1846 | 3200 Register rax_callsite = rax; |
3201 Register rcx_method_handle = rcx; | |
3202 | |
3279
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3203 // %%% should make a type profile for any invokedynamic that takes a ref argument |
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3204 // profile this call |
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3205 __ profile_call(r13); |
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3206 |
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3207 __ verify_oop(rax_callsite); |
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3208 __ load_heap_oop(rcx_method_handle, Address(rax_callsite, __ delayed_value(java_lang_invoke_CallSite::target_offset_in_bytes, rdx))); |
1846 | 3209 __ null_check(rcx_method_handle); |
3279
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3210 __ verify_oop(rcx_method_handle); |
1108 | 3211 __ prepare_to_jump_from_interpreted(); |
1846 | 3212 __ jump_to_method_handle_entry(rcx_method_handle, rdx); |
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3213 } |
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3214 |
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3215 |
0 | 3216 //----------------------------------------------------------------------------- |
3217 // Allocation | |
3218 | |
3219 void TemplateTable::_new() { | |
3220 transition(vtos, atos); | |
3221 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3222 Label slow_case; | |
3223 Label done; | |
3224 Label initialize_header; | |
3225 Label initialize_object; // including clearing the fields | |
3226 Label allocate_shared; | |
3227 | |
3228 __ get_cpool_and_tags(rsi, rax); | |
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3229 // Make sure the class we're about to instantiate has been resolved. |
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3230 // This is done before loading instanceKlass to be consistent with the order |
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3231 // how Constant Pool is updated (see constantPoolOopDesc::klass_at_put) |
0 | 3232 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; |
3233 __ cmpb(Address(rax, rdx, Address::times_1, tags_offset), | |
3234 JVM_CONSTANT_Class); | |
3235 __ jcc(Assembler::notEqual, slow_case); | |
3236 | |
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3237 // get instanceKlass |
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3238 __ movptr(rsi, Address(rsi, rdx, |
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3239 Address::times_8, sizeof(constantPoolOopDesc))); |
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3240 |
0 | 3241 // make sure klass is initialized & doesn't have finalizer |
3242 // make sure klass is fully initialized | |
4739
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3243 __ cmpb(Address(rsi, |
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3244 instanceKlass::init_state_offset()), |
0 | 3245 instanceKlass::fully_initialized); |
3246 __ jcc(Assembler::notEqual, slow_case); | |
3247 | |
3248 // get instance_size in instanceKlass (scaled to a count of bytes) | |
3249 __ movl(rdx, | |
3250 Address(rsi, | |
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3251 Klass::layout_helper_offset())); |
0 | 3252 // test to see if it has a finalizer or is malformed in some way |
3253 __ testl(rdx, Klass::_lh_instance_slow_path_bit); | |
3254 __ jcc(Assembler::notZero, slow_case); | |
3255 | |
3256 // Allocate the instance | |
3257 // 1) Try to allocate in the TLAB | |
3258 // 2) if fail and the object is large allocate in the shared Eden | |
3259 // 3) if the above fails (or is not applicable), go to a slow case | |
3260 // (creates a new TLAB, etc.) | |
3261 | |
3262 const bool allow_shared_alloc = | |
3263 Universe::heap()->supports_inline_contig_alloc() && !CMSIncrementalMode; | |
3264 | |
3265 if (UseTLAB) { | |
304 | 3266 __ movptr(rax, Address(r15_thread, in_bytes(JavaThread::tlab_top_offset()))); |
3267 __ lea(rbx, Address(rax, rdx, Address::times_1)); | |
3268 __ cmpptr(rbx, Address(r15_thread, in_bytes(JavaThread::tlab_end_offset()))); | |
0 | 3269 __ jcc(Assembler::above, allow_shared_alloc ? allocate_shared : slow_case); |
304 | 3270 __ movptr(Address(r15_thread, in_bytes(JavaThread::tlab_top_offset())), rbx); |
0 | 3271 if (ZeroTLAB) { |
3272 // the fields have been already cleared | |
3273 __ jmp(initialize_header); | |
3274 } else { | |
3275 // initialize both the header and fields | |
3276 __ jmp(initialize_object); | |
3277 } | |
3278 } | |
3279 | |
3280 // Allocation in the shared Eden, if allowed. | |
3281 // | |
3282 // rdx: instance size in bytes | |
3283 if (allow_shared_alloc) { | |
3284 __ bind(allocate_shared); | |
3285 | |
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3286 ExternalAddress top((address)Universe::heap()->top_addr()); |
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3287 ExternalAddress end((address)Universe::heap()->end_addr()); |
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3288 |
0 | 3289 const Register RtopAddr = rscratch1; |
3290 const Register RendAddr = rscratch2; | |
3291 | |
3292 __ lea(RtopAddr, top); | |
3293 __ lea(RendAddr, end); | |
304 | 3294 __ movptr(rax, Address(RtopAddr, 0)); |
0 | 3295 |
3296 // For retries rax gets set by cmpxchgq | |
3297 Label retry; | |
3298 __ bind(retry); | |
304 | 3299 __ lea(rbx, Address(rax, rdx, Address::times_1)); |
3300 __ cmpptr(rbx, Address(RendAddr, 0)); | |
0 | 3301 __ jcc(Assembler::above, slow_case); |
3302 | |
3303 // Compare rax with the top addr, and if still equal, store the new | |
3304 // top addr in rbx at the address of the top addr pointer. Sets ZF if was | |
3305 // equal, and clears it otherwise. Use lock prefix for atomicity on MPs. | |
3306 // | |
3307 // rax: object begin | |
3308 // rbx: object end | |
3309 // rdx: instance size in bytes | |
3310 if (os::is_MP()) { | |
3311 __ lock(); | |
3312 } | |
304 | 3313 __ cmpxchgptr(rbx, Address(RtopAddr, 0)); |
0 | 3314 |
3315 // if someone beat us on the allocation, try again, otherwise continue | |
3316 __ jcc(Assembler::notEqual, retry); | |
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3317 |
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3318 __ incr_allocated_bytes(r15_thread, rdx, 0); |
0 | 3319 } |
3320 | |
3321 if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) { | |
3322 // The object is initialized before the header. If the object size is | |
3323 // zero, go directly to the header initialization. | |
3324 __ bind(initialize_object); | |
3325 __ decrementl(rdx, sizeof(oopDesc)); | |
3326 __ jcc(Assembler::zero, initialize_header); | |
3327 | |
3328 // Initialize object fields | |
3329 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) | |
3330 __ shrl(rdx, LogBytesPerLong); // divide by oopSize to simplify the loop | |
3331 { | |
3332 Label loop; | |
3333 __ bind(loop); | |
3334 __ movq(Address(rax, rdx, Address::times_8, | |
3335 sizeof(oopDesc) - oopSize), | |
3336 rcx); | |
3337 __ decrementl(rdx); | |
3338 __ jcc(Assembler::notZero, loop); | |
3339 } | |
3340 | |
3341 // initialize object header only. | |
3342 __ bind(initialize_header); | |
3343 if (UseBiasedLocking) { | |
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3344 __ movptr(rscratch1, Address(rsi, Klass::prototype_header_offset())); |
304 | 3345 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes()), rscratch1); |
0 | 3346 } else { |
3347 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes()), | |
3348 (intptr_t) markOopDesc::prototype()); // header (address 0x1) | |
3349 } | |
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3350 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) |
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3351 __ store_klass_gap(rax, rcx); // zero klass gap for compressed oops |
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3352 __ store_klass(rax, rsi); // store klass last |
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3353 |
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3354 { |
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3355 SkipIfEqual skip(_masm, &DTraceAllocProbes, false); |
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3356 // Trigger dtrace event for fastpath |
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3357 __ push(atos); // save the return value |
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3358 __ call_VM_leaf( |
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3359 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), rax); |
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3360 __ pop(atos); // restore the return value |
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3361 |
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|
3362 } |
0 | 3363 __ jmp(done); |
3364 } | |
3365 | |
3366 | |
3367 // slow case | |
3368 __ bind(slow_case); | |
3369 __ get_constant_pool(c_rarg1); | |
3370 __ get_unsigned_2_byte_index_at_bcp(c_rarg2, 1); | |
3371 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), c_rarg1, c_rarg2); | |
3372 __ verify_oop(rax); | |
3373 | |
3374 // continue | |
3375 __ bind(done); | |
3376 } | |
3377 | |
3378 void TemplateTable::newarray() { | |
3379 transition(itos, atos); | |
3380 __ load_unsigned_byte(c_rarg1, at_bcp(1)); | |
3381 __ movl(c_rarg2, rax); | |
3382 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray), | |
3383 c_rarg1, c_rarg2); | |
3384 } | |
3385 | |
3386 void TemplateTable::anewarray() { | |
3387 transition(itos, atos); | |
3388 __ get_unsigned_2_byte_index_at_bcp(c_rarg2, 1); | |
3389 __ get_constant_pool(c_rarg1); | |
3390 __ movl(c_rarg3, rax); | |
3391 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray), | |
3392 c_rarg1, c_rarg2, c_rarg3); | |
3393 } | |
3394 | |
3395 void TemplateTable::arraylength() { | |
3396 transition(atos, itos); | |
3397 __ null_check(rax, arrayOopDesc::length_offset_in_bytes()); | |
3398 __ movl(rax, Address(rax, arrayOopDesc::length_offset_in_bytes())); | |
3399 } | |
3400 | |
3401 void TemplateTable::checkcast() { | |
3402 transition(atos, atos); | |
3403 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3404 __ testptr(rax, rax); // object is in rax |
0 | 3405 __ jcc(Assembler::zero, is_null); |
3406 | |
3407 // Get cpool & tags index | |
3408 __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array | |
3409 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index | |
3410 // See if bytecode has already been quicked | |
3411 __ cmpb(Address(rdx, rbx, | |
3412 Address::times_1, | |
3413 typeArrayOopDesc::header_size(T_BYTE) * wordSize), | |
3414 JVM_CONSTANT_Class); | |
3415 __ jcc(Assembler::equal, quicked); | |
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3416 __ push(atos); // save receiver for result, and for GC |
0 | 3417 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc)); |
3418 __ pop_ptr(rdx); // restore receiver | |
3419 __ jmpb(resolved); | |
3420 | |
3421 // Get superklass in rax and subklass in rbx | |
3422 __ bind(quicked); | |
304 | 3423 __ mov(rdx, rax); // Save object in rdx; rax needed for subtype check |
3424 __ movptr(rax, Address(rcx, rbx, | |
0 | 3425 Address::times_8, sizeof(constantPoolOopDesc))); |
3426 | |
3427 __ bind(resolved); | |
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3428 __ load_klass(rbx, rdx); |
0 | 3429 |
3430 // Generate subtype check. Blows rcx, rdi. Object in rdx. | |
3431 // Superklass in rax. Subklass in rbx. | |
3432 __ gen_subtype_check(rbx, ok_is_subtype); | |
3433 | |
3434 // Come here on failure | |
3435 __ push_ptr(rdx); | |
3436 // object is at TOS | |
3437 __ jump(ExternalAddress(Interpreter::_throw_ClassCastException_entry)); | |
3438 | |
3439 // Come here on success | |
3440 __ bind(ok_is_subtype); | |
304 | 3441 __ mov(rax, rdx); // Restore object in rdx |
0 | 3442 |
3443 // Collect counts on whether this check-cast sees NULLs a lot or not. | |
3444 if (ProfileInterpreter) { | |
3445 __ jmp(done); | |
3446 __ bind(is_null); | |
3447 __ profile_null_seen(rcx); | |
3448 } else { | |
3449 __ bind(is_null); // same as 'done' | |
3450 } | |
3451 __ bind(done); | |
3452 } | |
3453 | |
3454 void TemplateTable::instanceof() { | |
3455 transition(atos, itos); | |
3456 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3457 __ testptr(rax, rax); |
0 | 3458 __ jcc(Assembler::zero, is_null); |
3459 | |
3460 // Get cpool & tags index | |
3461 __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array | |
3462 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index | |
3463 // See if bytecode has already been quicked | |
3464 __ cmpb(Address(rdx, rbx, | |
3465 Address::times_1, | |
3466 typeArrayOopDesc::header_size(T_BYTE) * wordSize), | |
3467 JVM_CONSTANT_Class); | |
3468 __ jcc(Assembler::equal, quicked); | |
3469 | |
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3470 __ push(atos); // save receiver for result, and for GC |
0 | 3471 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc)); |
3472 __ pop_ptr(rdx); // restore receiver | |
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3473 __ verify_oop(rdx); |
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3474 __ load_klass(rdx, rdx); |
0 | 3475 __ jmpb(resolved); |
3476 | |
3477 // Get superklass in rax and subklass in rdx | |
3478 __ bind(quicked); | |
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3479 __ load_klass(rdx, rax); |
304 | 3480 __ movptr(rax, Address(rcx, rbx, |
3481 Address::times_8, sizeof(constantPoolOopDesc))); | |
0 | 3482 |
3483 __ bind(resolved); | |
3484 | |
3485 // Generate subtype check. Blows rcx, rdi | |
3486 // Superklass in rax. Subklass in rdx. | |
3487 __ gen_subtype_check(rdx, ok_is_subtype); | |
3488 | |
3489 // Come here on failure | |
3490 __ xorl(rax, rax); | |
3491 __ jmpb(done); | |
3492 // Come here on success | |
3493 __ bind(ok_is_subtype); | |
3494 __ movl(rax, 1); | |
3495 | |
3496 // Collect counts on whether this test sees NULLs a lot or not. | |
3497 if (ProfileInterpreter) { | |
3498 __ jmp(done); | |
3499 __ bind(is_null); | |
3500 __ profile_null_seen(rcx); | |
3501 } else { | |
3502 __ bind(is_null); // same as 'done' | |
3503 } | |
3504 __ bind(done); | |
3505 // rax = 0: obj == NULL or obj is not an instanceof the specified klass | |
3506 // rax = 1: obj != NULL and obj is an instanceof the specified klass | |
3507 } | |
3508 | |
3509 //----------------------------------------------------------------------------- | |
3510 // Breakpoints | |
3511 void TemplateTable::_breakpoint() { | |
3512 // Note: We get here even if we are single stepping.. | |
3513 // jbug inists on setting breakpoints at every bytecode | |
3514 // even if we are in single step mode. | |
3515 | |
3516 transition(vtos, vtos); | |
3517 | |
3518 // get the unpatched byte code | |
3519 __ get_method(c_rarg1); | |
3520 __ call_VM(noreg, | |
3521 CAST_FROM_FN_PTR(address, | |
3522 InterpreterRuntime::get_original_bytecode_at), | |
3523 c_rarg1, r13); | |
304 | 3524 __ mov(rbx, rax); |
0 | 3525 |
3526 // post the breakpoint event | |
3527 __ get_method(c_rarg1); | |
3528 __ call_VM(noreg, | |
3529 CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint), | |
3530 c_rarg1, r13); | |
3531 | |
3532 // complete the execution of original bytecode | |
3533 __ dispatch_only_normal(vtos); | |
3534 } | |
3535 | |
3536 //----------------------------------------------------------------------------- | |
3537 // Exceptions | |
3538 | |
3539 void TemplateTable::athrow() { | |
3540 transition(atos, vtos); | |
3541 __ null_check(rax); | |
3542 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
3543 } | |
3544 | |
3545 //----------------------------------------------------------------------------- | |
3546 // Synchronization | |
3547 // | |
3548 // Note: monitorenter & exit are symmetric routines; which is reflected | |
3549 // in the assembly code structure as well | |
3550 // | |
3551 // Stack layout: | |
3552 // | |
3553 // [expressions ] <--- rsp = expression stack top | |
3554 // .. | |
3555 // [expressions ] | |
3556 // [monitor entry] <--- monitor block top = expression stack bot | |
3557 // .. | |
3558 // [monitor entry] | |
3559 // [frame data ] <--- monitor block bot | |
3560 // ... | |
3561 // [saved rbp ] <--- rbp | |
3562 void TemplateTable::monitorenter() { | |
3563 transition(atos, vtos); | |
3564 | |
3565 // check for NULL object | |
3566 __ null_check(rax); | |
3567 | |
3568 const Address monitor_block_top( | |
3569 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3570 const Address monitor_block_bot( | |
3571 rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3572 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
3573 | |
3574 Label allocated; | |
3575 | |
3576 // initialize entry pointer | |
3577 __ xorl(c_rarg1, c_rarg1); // points to free slot or NULL | |
3578 | |
3579 // find a free slot in the monitor block (result in c_rarg1) | |
3580 { | |
3581 Label entry, loop, exit; | |
304 | 3582 __ movptr(c_rarg3, monitor_block_top); // points to current entry, |
0 | 3583 // starting with top-most entry |
304 | 3584 __ lea(c_rarg2, monitor_block_bot); // points to word before bottom |
0 | 3585 // of monitor block |
3586 __ jmpb(entry); | |
3587 | |
3588 __ bind(loop); | |
3589 // check if current entry is used | |
304 | 3590 __ cmpptr(Address(c_rarg3, BasicObjectLock::obj_offset_in_bytes()), (int32_t) NULL_WORD); |
0 | 3591 // if not used then remember entry in c_rarg1 |
304 | 3592 __ cmov(Assembler::equal, c_rarg1, c_rarg3); |
0 | 3593 // check if current entry is for same object |
304 | 3594 __ cmpptr(rax, Address(c_rarg3, BasicObjectLock::obj_offset_in_bytes())); |
0 | 3595 // if same object then stop searching |
3596 __ jccb(Assembler::equal, exit); | |
3597 // otherwise advance to next entry | |
304 | 3598 __ addptr(c_rarg3, entry_size); |
0 | 3599 __ bind(entry); |
3600 // check if bottom reached | |
304 | 3601 __ cmpptr(c_rarg3, c_rarg2); |
0 | 3602 // if not at bottom then check this entry |
3603 __ jcc(Assembler::notEqual, loop); | |
3604 __ bind(exit); | |
3605 } | |
3606 | |
304 | 3607 __ testptr(c_rarg1, c_rarg1); // check if a slot has been found |
0 | 3608 __ jcc(Assembler::notZero, allocated); // if found, continue with that one |
3609 | |
3610 // allocate one if there's no free slot | |
3611 { | |
3612 Label entry, loop; | |
304 | 3613 // 1. compute new pointers // rsp: old expression stack top |
3614 __ movptr(c_rarg1, monitor_block_bot); // c_rarg1: old expression stack bottom | |
3615 __ subptr(rsp, entry_size); // move expression stack top | |
3616 __ subptr(c_rarg1, entry_size); // move expression stack bottom | |
3617 __ mov(c_rarg3, rsp); // set start value for copy loop | |
3618 __ movptr(monitor_block_bot, c_rarg1); // set new monitor block bottom | |
0 | 3619 __ jmp(entry); |
3620 // 2. move expression stack contents | |
3621 __ bind(loop); | |
304 | 3622 __ movptr(c_rarg2, Address(c_rarg3, entry_size)); // load expression stack |
3623 // word from old location | |
3624 __ movptr(Address(c_rarg3, 0), c_rarg2); // and store it at new location | |
3625 __ addptr(c_rarg3, wordSize); // advance to next word | |
0 | 3626 __ bind(entry); |
304 | 3627 __ cmpptr(c_rarg3, c_rarg1); // check if bottom reached |
0 | 3628 __ jcc(Assembler::notEqual, loop); // if not at bottom then |
3629 // copy next word | |
3630 } | |
3631 | |
3632 // call run-time routine | |
3633 // c_rarg1: points to monitor entry | |
3634 __ bind(allocated); | |
3635 | |
3636 // Increment bcp to point to the next bytecode, so exception | |
3637 // handling for async. exceptions work correctly. | |
3638 // The object has already been poped from the stack, so the | |
3639 // expression stack looks correct. | |
304 | 3640 __ increment(r13); |
0 | 3641 |
3642 // store object | |
304 | 3643 __ movptr(Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes()), rax); |
0 | 3644 __ lock_object(c_rarg1); |
3645 | |
3646 // check to make sure this monitor doesn't cause stack overflow after locking | |
3647 __ save_bcp(); // in case of exception | |
3648 __ generate_stack_overflow_check(0); | |
3649 | |
3650 // The bcp has already been incremented. Just need to dispatch to | |
3651 // next instruction. | |
3652 __ dispatch_next(vtos); | |
3653 } | |
3654 | |
3655 | |
3656 void TemplateTable::monitorexit() { | |
3657 transition(atos, vtos); | |
3658 | |
3659 // check for NULL object | |
3660 __ null_check(rax); | |
3661 | |
3662 const Address monitor_block_top( | |
3663 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3664 const Address monitor_block_bot( | |
3665 rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3666 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
3667 | |
3668 Label found; | |
3669 | |
3670 // find matching slot | |
3671 { | |
3672 Label entry, loop; | |
304 | 3673 __ movptr(c_rarg1, monitor_block_top); // points to current entry, |
0 | 3674 // starting with top-most entry |
304 | 3675 __ lea(c_rarg2, monitor_block_bot); // points to word before bottom |
0 | 3676 // of monitor block |
3677 __ jmpb(entry); | |
3678 | |
3679 __ bind(loop); | |
3680 // check if current entry is for same object | |
304 | 3681 __ cmpptr(rax, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
0 | 3682 // if same object then stop searching |
3683 __ jcc(Assembler::equal, found); | |
3684 // otherwise advance to next entry | |
304 | 3685 __ addptr(c_rarg1, entry_size); |
0 | 3686 __ bind(entry); |
3687 // check if bottom reached | |
304 | 3688 __ cmpptr(c_rarg1, c_rarg2); |
0 | 3689 // if not at bottom then check this entry |
3690 __ jcc(Assembler::notEqual, loop); | |
3691 } | |
3692 | |
3693 // error handling. Unlocking was not block-structured | |
3694 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
3695 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
3696 __ should_not_reach_here(); | |
3697 | |
3698 // call run-time routine | |
3699 // rsi: points to monitor entry | |
3700 __ bind(found); | |
3701 __ push_ptr(rax); // make sure object is on stack (contract with oopMaps) | |
3702 __ unlock_object(c_rarg1); | |
3703 __ pop_ptr(rax); // discard object | |
3704 } | |
3705 | |
3706 | |
3707 // Wide instructions | |
3708 void TemplateTable::wide() { | |
3709 transition(vtos, vtos); | |
3710 __ load_unsigned_byte(rbx, at_bcp(1)); | |
3711 __ lea(rscratch1, ExternalAddress((address)Interpreter::_wentry_point)); | |
3712 __ jmp(Address(rscratch1, rbx, Address::times_8)); | |
3713 // Note: the r13 increment step is part of the individual wide | |
3714 // bytecode implementations | |
3715 } | |
3716 | |
3717 | |
3718 // Multi arrays | |
3719 void TemplateTable::multianewarray() { | |
3720 transition(vtos, atos); | |
3721 __ load_unsigned_byte(rax, at_bcp(3)); // get number of dimensions | |
3722 // last dim is on top of stack; we want address of first one: | |
3723 // first_addr = last_addr + (ndims - 1) * wordSize | |
304 | 3724 __ lea(c_rarg1, Address(rsp, rax, Address::times_8, -wordSize)); |
0 | 3725 call_VM(rax, |
3726 CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), | |
3727 c_rarg1); | |
3728 __ load_unsigned_byte(rbx, at_bcp(3)); | |
304 | 3729 __ lea(rsp, Address(rsp, rbx, Address::times_8)); |
0 | 3730 } |
304 | 3731 #endif // !CC_INTERP |