Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateTable_x86_64.cpp @ 10102:f2e682ef3156
8012335: G1: Fix bug with compressed oops in template interpreter on x86 and sparc.
Summary: In do_oop_store the uncompressed value of the oop being stored needs to be preserved and passed to g1_write_barrier_post. This is necessary for the heap region cross check to work correctly.
Reviewed-by: coleenp, johnc
Contributed-by: Martin Doerr <martin.doerr@sap.com>
author | johnc |
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date | Wed, 17 Apr 2013 10:57:02 -0700 |
parents | db9981fd3124 |
children | 9500809ceead |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
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26 #include "asm/macroAssembler.hpp" |
1972 | 27 #include "interpreter/interpreter.hpp" |
28 #include "interpreter/interpreterRuntime.hpp" | |
29 #include "interpreter/templateTable.hpp" | |
30 #include "memory/universe.inline.hpp" | |
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31 #include "oops/methodData.hpp" |
1972 | 32 #include "oops/objArrayKlass.hpp" |
33 #include "oops/oop.inline.hpp" | |
34 #include "prims/methodHandles.hpp" | |
35 #include "runtime/sharedRuntime.hpp" | |
36 #include "runtime/stubRoutines.hpp" | |
37 #include "runtime/synchronizer.hpp" | |
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38 #include "utilities/macros.hpp" |
0 | 39 |
304 | 40 #ifndef CC_INTERP |
41 | |
0 | 42 #define __ _masm-> |
43 | |
44 // Platform-dependent initialization | |
45 | |
46 void TemplateTable::pd_initialize() { | |
47 // No amd64 specific initialization | |
48 } | |
49 | |
50 // Address computation: local variables | |
51 | |
52 static inline Address iaddress(int n) { | |
53 return Address(r14, Interpreter::local_offset_in_bytes(n)); | |
54 } | |
55 | |
56 static inline Address laddress(int n) { | |
57 return iaddress(n + 1); | |
58 } | |
59 | |
60 static inline Address faddress(int n) { | |
61 return iaddress(n); | |
62 } | |
63 | |
64 static inline Address daddress(int n) { | |
65 return laddress(n); | |
66 } | |
67 | |
68 static inline Address aaddress(int n) { | |
69 return iaddress(n); | |
70 } | |
71 | |
72 static inline Address iaddress(Register r) { | |
1506 | 73 return Address(r14, r, Address::times_8); |
0 | 74 } |
75 | |
76 static inline Address laddress(Register r) { | |
77 return Address(r14, r, Address::times_8, Interpreter::local_offset_in_bytes(1)); | |
78 } | |
79 | |
80 static inline Address faddress(Register r) { | |
81 return iaddress(r); | |
82 } | |
83 | |
84 static inline Address daddress(Register r) { | |
85 return laddress(r); | |
86 } | |
87 | |
88 static inline Address aaddress(Register r) { | |
89 return iaddress(r); | |
90 } | |
91 | |
92 static inline Address at_rsp() { | |
93 return Address(rsp, 0); | |
94 } | |
95 | |
96 // At top of Java expression stack which may be different than esp(). It | |
97 // isn't for category 1 objects. | |
98 static inline Address at_tos () { | |
99 return Address(rsp, Interpreter::expr_offset_in_bytes(0)); | |
100 } | |
101 | |
102 static inline Address at_tos_p1() { | |
103 return Address(rsp, Interpreter::expr_offset_in_bytes(1)); | |
104 } | |
105 | |
106 static inline Address at_tos_p2() { | |
107 return Address(rsp, Interpreter::expr_offset_in_bytes(2)); | |
108 } | |
109 | |
110 static inline Address at_tos_p3() { | |
111 return Address(rsp, Interpreter::expr_offset_in_bytes(3)); | |
112 } | |
113 | |
114 // Condition conversion | |
115 static Assembler::Condition j_not(TemplateTable::Condition cc) { | |
116 switch (cc) { | |
117 case TemplateTable::equal : return Assembler::notEqual; | |
118 case TemplateTable::not_equal : return Assembler::equal; | |
119 case TemplateTable::less : return Assembler::greaterEqual; | |
120 case TemplateTable::less_equal : return Assembler::greater; | |
121 case TemplateTable::greater : return Assembler::lessEqual; | |
122 case TemplateTable::greater_equal: return Assembler::less; | |
123 } | |
124 ShouldNotReachHere(); | |
125 return Assembler::zero; | |
126 } | |
127 | |
128 | |
129 // Miscelaneous helper routines | |
342
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130 // Store an oop (or NULL) at the address described by obj. |
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131 // If val == noreg this means store a NULL |
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132 |
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133 static void do_oop_store(InterpreterMacroAssembler* _masm, |
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134 Address obj, |
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135 Register val, |
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136 BarrierSet::Name barrier, |
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137 bool precise) { |
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138 assert(val == noreg || val == rax, "parameter is just for looks"); |
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139 switch (barrier) { |
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140 #if INCLUDE_ALL_GCS |
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141 case BarrierSet::G1SATBCT: |
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142 case BarrierSet::G1SATBCTLogging: |
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143 { |
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144 // flatten object address if needed |
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145 if (obj.index() == noreg && obj.disp() == 0) { |
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146 if (obj.base() != rdx) { |
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147 __ movq(rdx, obj.base()); |
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148 } |
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149 } else { |
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150 __ leaq(rdx, obj); |
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151 } |
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152 __ g1_write_barrier_pre(rdx /* obj */, |
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153 rbx /* pre_val */, |
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154 r15_thread /* thread */, |
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155 r8 /* tmp */, |
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156 val != noreg /* tosca_live */, |
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157 false /* expand_call */); |
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158 if (val == noreg) { |
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159 __ store_heap_oop_null(Address(rdx, 0)); |
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160 } else { |
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161 // G1 barrier needs uncompressed oop for region cross check. |
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162 Register new_val = val; |
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163 if (UseCompressedOops) { |
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164 new_val = rbx; |
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165 __ movptr(new_val, val); |
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166 } |
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167 __ store_heap_oop(Address(rdx, 0), val); |
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168 __ g1_write_barrier_post(rdx /* store_adr */, |
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169 new_val /* new_val */, |
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170 r15_thread /* thread */, |
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171 r8 /* tmp */, |
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172 rbx /* tmp2 */); |
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173 } |
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174 } |
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175 break; |
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176 #endif // INCLUDE_ALL_GCS |
342
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177 case BarrierSet::CardTableModRef: |
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178 case BarrierSet::CardTableExtension: |
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179 { |
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180 if (val == noreg) { |
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181 __ store_heap_oop_null(obj); |
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182 } else { |
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183 __ store_heap_oop(obj, val); |
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184 // flatten object address if needed |
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185 if (!precise || (obj.index() == noreg && obj.disp() == 0)) { |
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186 __ store_check(obj.base()); |
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187 } else { |
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188 __ leaq(rdx, obj); |
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189 __ store_check(rdx); |
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190 } |
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191 } |
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192 } |
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193 break; |
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194 case BarrierSet::ModRef: |
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195 case BarrierSet::Other: |
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196 if (val == noreg) { |
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197 __ store_heap_oop_null(obj); |
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198 } else { |
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199 __ store_heap_oop(obj, val); |
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200 } |
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201 break; |
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202 default : |
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203 ShouldNotReachHere(); |
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204 |
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205 } |
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206 } |
0 | 207 |
208 Address TemplateTable::at_bcp(int offset) { | |
209 assert(_desc->uses_bcp(), "inconsistent uses_bcp information"); | |
210 return Address(r13, offset); | |
211 } | |
212 | |
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213 void TemplateTable::patch_bytecode(Bytecodes::Code bc, Register bc_reg, |
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214 Register temp_reg, bool load_bc_into_bc_reg/*=true*/, |
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215 int byte_no) { |
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216 if (!RewriteBytecodes) return; |
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217 Label L_patch_done; |
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218 |
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219 switch (bc) { |
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220 case Bytecodes::_fast_aputfield: |
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221 case Bytecodes::_fast_bputfield: |
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222 case Bytecodes::_fast_cputfield: |
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223 case Bytecodes::_fast_dputfield: |
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224 case Bytecodes::_fast_fputfield: |
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225 case Bytecodes::_fast_iputfield: |
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226 case Bytecodes::_fast_lputfield: |
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227 case Bytecodes::_fast_sputfield: |
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228 { |
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229 // We skip bytecode quickening for putfield instructions when |
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230 // the put_code written to the constant pool cache is zero. |
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231 // This is required so that every execution of this instruction |
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232 // calls out to InterpreterRuntime::resolve_get_put to do |
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233 // additional, required work. |
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234 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range"); |
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235 assert(load_bc_into_bc_reg, "we use bc_reg as temp"); |
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236 __ get_cache_and_index_and_bytecode_at_bcp(temp_reg, bc_reg, temp_reg, byte_no, 1); |
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237 __ movl(bc_reg, bc); |
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238 __ cmpl(temp_reg, (int) 0); |
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239 __ jcc(Assembler::zero, L_patch_done); // don't patch |
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240 } |
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241 break; |
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242 default: |
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243 assert(byte_no == -1, "sanity"); |
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244 // the pair bytecodes have already done the load. |
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245 if (load_bc_into_bc_reg) { |
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246 __ movl(bc_reg, bc); |
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247 } |
0 | 248 } |
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249 |
0 | 250 if (JvmtiExport::can_post_breakpoint()) { |
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251 Label L_fast_patch; |
0 | 252 // if a breakpoint is present we can't rewrite the stream directly |
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253 __ movzbl(temp_reg, at_bcp(0)); |
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254 __ cmpl(temp_reg, Bytecodes::_breakpoint); |
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255 __ jcc(Assembler::notEqual, L_fast_patch); |
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256 __ get_method(temp_reg); |
0 | 257 // Let breakpoint table handling rewrite to quicker bytecode |
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258 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), temp_reg, r13, bc_reg); |
0 | 259 #ifndef ASSERT |
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260 __ jmpb(L_patch_done); |
1108 | 261 #else |
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262 __ jmp(L_patch_done); |
1108 | 263 #endif |
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264 __ bind(L_fast_patch); |
0 | 265 } |
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266 |
1108 | 267 #ifdef ASSERT |
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268 Label L_okay; |
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269 __ load_unsigned_byte(temp_reg, at_bcp(0)); |
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270 __ cmpl(temp_reg, (int) Bytecodes::java_code(bc)); |
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271 __ jcc(Assembler::equal, L_okay); |
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272 __ cmpl(temp_reg, bc_reg); |
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273 __ jcc(Assembler::equal, L_okay); |
0 | 274 __ stop("patching the wrong bytecode"); |
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275 __ bind(L_okay); |
0 | 276 #endif |
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277 |
0 | 278 // patch bytecode |
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279 __ movb(at_bcp(0), bc_reg); |
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280 __ bind(L_patch_done); |
0 | 281 } |
282 | |
283 | |
284 // Individual instructions | |
285 | |
286 void TemplateTable::nop() { | |
287 transition(vtos, vtos); | |
288 // nothing to do | |
289 } | |
290 | |
291 void TemplateTable::shouldnotreachhere() { | |
292 transition(vtos, vtos); | |
293 __ stop("shouldnotreachhere bytecode"); | |
294 } | |
295 | |
296 void TemplateTable::aconst_null() { | |
297 transition(vtos, atos); | |
298 __ xorl(rax, rax); | |
299 } | |
300 | |
301 void TemplateTable::iconst(int value) { | |
302 transition(vtos, itos); | |
303 if (value == 0) { | |
304 __ xorl(rax, rax); | |
305 } else { | |
306 __ movl(rax, value); | |
307 } | |
308 } | |
309 | |
310 void TemplateTable::lconst(int value) { | |
311 transition(vtos, ltos); | |
312 if (value == 0) { | |
313 __ xorl(rax, rax); | |
314 } else { | |
315 __ movl(rax, value); | |
316 } | |
317 } | |
318 | |
319 void TemplateTable::fconst(int value) { | |
320 transition(vtos, ftos); | |
321 static float one = 1.0f, two = 2.0f; | |
322 switch (value) { | |
323 case 0: | |
324 __ xorps(xmm0, xmm0); | |
325 break; | |
326 case 1: | |
327 __ movflt(xmm0, ExternalAddress((address) &one)); | |
328 break; | |
329 case 2: | |
330 __ movflt(xmm0, ExternalAddress((address) &two)); | |
331 break; | |
332 default: | |
333 ShouldNotReachHere(); | |
334 break; | |
335 } | |
336 } | |
337 | |
338 void TemplateTable::dconst(int value) { | |
339 transition(vtos, dtos); | |
340 static double one = 1.0; | |
341 switch (value) { | |
342 case 0: | |
343 __ xorpd(xmm0, xmm0); | |
344 break; | |
345 case 1: | |
346 __ movdbl(xmm0, ExternalAddress((address) &one)); | |
347 break; | |
348 default: | |
349 ShouldNotReachHere(); | |
350 break; | |
351 } | |
352 } | |
353 | |
354 void TemplateTable::bipush() { | |
355 transition(vtos, itos); | |
356 __ load_signed_byte(rax, at_bcp(1)); | |
357 } | |
358 | |
359 void TemplateTable::sipush() { | |
360 transition(vtos, itos); | |
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361 __ load_unsigned_short(rax, at_bcp(1)); |
0 | 362 __ bswapl(rax); |
363 __ sarl(rax, 16); | |
364 } | |
365 | |
366 void TemplateTable::ldc(bool wide) { | |
367 transition(vtos, vtos); | |
368 Label call_ldc, notFloat, notClass, Done; | |
369 | |
370 if (wide) { | |
371 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
372 } else { | |
373 __ load_unsigned_byte(rbx, at_bcp(1)); | |
374 } | |
375 | |
376 __ get_cpool_and_tags(rcx, rax); | |
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377 const int base_offset = ConstantPool::header_size() * wordSize; |
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378 const int tags_offset = Array<u1>::base_offset_in_bytes(); |
0 | 379 |
380 // get type | |
381 __ movzbl(rdx, Address(rax, rbx, Address::times_1, tags_offset)); | |
382 | |
383 // unresolved class - get the resolved class | |
384 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClass); | |
385 __ jccb(Assembler::equal, call_ldc); | |
386 | |
387 // unresolved class in error state - call into runtime to throw the error | |
388 // from the first resolution attempt | |
389 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClassInError); | |
390 __ jccb(Assembler::equal, call_ldc); | |
391 | |
392 // resolved class - need to call vm to get java mirror of the class | |
393 __ cmpl(rdx, JVM_CONSTANT_Class); | |
394 __ jcc(Assembler::notEqual, notClass); | |
395 | |
396 __ bind(call_ldc); | |
397 __ movl(c_rarg1, wide); | |
398 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), c_rarg1); | |
399 __ push_ptr(rax); | |
400 __ verify_oop(rax); | |
401 __ jmp(Done); | |
402 | |
403 __ bind(notClass); | |
404 __ cmpl(rdx, JVM_CONSTANT_Float); | |
405 __ jccb(Assembler::notEqual, notFloat); | |
406 // ftos | |
407 __ movflt(xmm0, Address(rcx, rbx, Address::times_8, base_offset)); | |
408 __ push_f(); | |
409 __ jmp(Done); | |
410 | |
411 __ bind(notFloat); | |
412 #ifdef ASSERT | |
413 { | |
414 Label L; | |
415 __ cmpl(rdx, JVM_CONSTANT_Integer); | |
416 __ jcc(Assembler::equal, L); | |
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417 // String and Object are rewritten to fast_aldc |
0 | 418 __ stop("unexpected tag type in ldc"); |
419 __ bind(L); | |
420 } | |
421 #endif | |
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422 // itos JVM_CONSTANT_Integer only |
0 | 423 __ movl(rax, Address(rcx, rbx, Address::times_8, base_offset)); |
424 __ push_i(rax); | |
425 __ bind(Done); | |
426 } | |
427 | |
1602 | 428 // Fast path for caching oop constants. |
429 void TemplateTable::fast_aldc(bool wide) { | |
430 transition(vtos, atos); | |
431 | |
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432 Register result = rax; |
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433 Register tmp = rdx; |
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434 int index_size = wide ? sizeof(u2) : sizeof(u1); |
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435 |
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436 Label resolved; |
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437 |
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438 // We are resolved if the resolved reference cache entry contains a |
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439 // non-null object (String, MethodType, etc.) |
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440 assert_different_registers(result, tmp); |
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441 __ get_cache_index_at_bcp(tmp, 1, index_size); |
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442 __ load_resolved_reference_at_index(result, tmp); |
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443 __ testl(result, result); |
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444 __ jcc(Assembler::notZero, resolved); |
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445 |
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446 address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); |
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447 |
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448 // first time invocation - must resolve first |
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449 __ movl(tmp, (int)bytecode()); |
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450 __ call_VM(result, entry, tmp); |
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451 |
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452 __ bind(resolved); |
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453 |
1602 | 454 if (VerifyOops) { |
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455 __ verify_oop(result); |
1602 | 456 } |
457 } | |
458 | |
0 | 459 void TemplateTable::ldc2_w() { |
460 transition(vtos, vtos); | |
461 Label Long, Done; | |
462 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
463 | |
464 __ get_cpool_and_tags(rcx, rax); | |
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465 const int base_offset = ConstantPool::header_size() * wordSize; |
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466 const int tags_offset = Array<u1>::base_offset_in_bytes(); |
0 | 467 |
468 // get type | |
469 __ cmpb(Address(rax, rbx, Address::times_1, tags_offset), | |
470 JVM_CONSTANT_Double); | |
471 __ jccb(Assembler::notEqual, Long); | |
472 // dtos | |
473 __ movdbl(xmm0, Address(rcx, rbx, Address::times_8, base_offset)); | |
474 __ push_d(); | |
475 __ jmpb(Done); | |
476 | |
477 __ bind(Long); | |
478 // ltos | |
479 __ movq(rax, Address(rcx, rbx, Address::times_8, base_offset)); | |
480 __ push_l(); | |
481 | |
482 __ bind(Done); | |
483 } | |
484 | |
485 void TemplateTable::locals_index(Register reg, int offset) { | |
486 __ load_unsigned_byte(reg, at_bcp(offset)); | |
304 | 487 __ negptr(reg); |
0 | 488 } |
489 | |
490 void TemplateTable::iload() { | |
491 transition(vtos, itos); | |
492 if (RewriteFrequentPairs) { | |
493 Label rewrite, done; | |
494 const Register bc = c_rarg3; | |
495 assert(rbx != bc, "register damaged"); | |
496 | |
497 // get next byte | |
498 __ load_unsigned_byte(rbx, | |
499 at_bcp(Bytecodes::length_for(Bytecodes::_iload))); | |
500 // if _iload, wait to rewrite to iload2. We only want to rewrite the | |
501 // last two iloads in a pair. Comparing against fast_iload means that | |
502 // the next bytecode is neither an iload or a caload, and therefore | |
503 // an iload pair. | |
504 __ cmpl(rbx, Bytecodes::_iload); | |
505 __ jcc(Assembler::equal, done); | |
506 | |
507 __ cmpl(rbx, Bytecodes::_fast_iload); | |
508 __ movl(bc, Bytecodes::_fast_iload2); | |
509 __ jccb(Assembler::equal, rewrite); | |
510 | |
511 // if _caload, rewrite to fast_icaload | |
512 __ cmpl(rbx, Bytecodes::_caload); | |
513 __ movl(bc, Bytecodes::_fast_icaload); | |
514 __ jccb(Assembler::equal, rewrite); | |
515 | |
516 // rewrite so iload doesn't check again. | |
517 __ movl(bc, Bytecodes::_fast_iload); | |
518 | |
519 // rewrite | |
520 // bc: fast bytecode | |
521 __ bind(rewrite); | |
522 patch_bytecode(Bytecodes::_iload, bc, rbx, false); | |
523 __ bind(done); | |
524 } | |
525 | |
526 // Get the local value into tos | |
527 locals_index(rbx); | |
528 __ movl(rax, iaddress(rbx)); | |
529 } | |
530 | |
531 void TemplateTable::fast_iload2() { | |
532 transition(vtos, itos); | |
533 locals_index(rbx); | |
534 __ movl(rax, iaddress(rbx)); | |
535 __ push(itos); | |
536 locals_index(rbx, 3); | |
537 __ movl(rax, iaddress(rbx)); | |
538 } | |
539 | |
540 void TemplateTable::fast_iload() { | |
541 transition(vtos, itos); | |
542 locals_index(rbx); | |
543 __ movl(rax, iaddress(rbx)); | |
544 } | |
545 | |
546 void TemplateTable::lload() { | |
547 transition(vtos, ltos); | |
548 locals_index(rbx); | |
549 __ movq(rax, laddress(rbx)); | |
550 } | |
551 | |
552 void TemplateTable::fload() { | |
553 transition(vtos, ftos); | |
554 locals_index(rbx); | |
555 __ movflt(xmm0, faddress(rbx)); | |
556 } | |
557 | |
558 void TemplateTable::dload() { | |
559 transition(vtos, dtos); | |
560 locals_index(rbx); | |
561 __ movdbl(xmm0, daddress(rbx)); | |
562 } | |
563 | |
564 void TemplateTable::aload() { | |
565 transition(vtos, atos); | |
566 locals_index(rbx); | |
304 | 567 __ movptr(rax, aaddress(rbx)); |
0 | 568 } |
569 | |
570 void TemplateTable::locals_index_wide(Register reg) { | |
571 __ movl(reg, at_bcp(2)); | |
572 __ bswapl(reg); | |
573 __ shrl(reg, 16); | |
304 | 574 __ negptr(reg); |
0 | 575 } |
576 | |
577 void TemplateTable::wide_iload() { | |
578 transition(vtos, itos); | |
579 locals_index_wide(rbx); | |
580 __ movl(rax, iaddress(rbx)); | |
581 } | |
582 | |
583 void TemplateTable::wide_lload() { | |
584 transition(vtos, ltos); | |
585 locals_index_wide(rbx); | |
586 __ movq(rax, laddress(rbx)); | |
587 } | |
588 | |
589 void TemplateTable::wide_fload() { | |
590 transition(vtos, ftos); | |
591 locals_index_wide(rbx); | |
592 __ movflt(xmm0, faddress(rbx)); | |
593 } | |
594 | |
595 void TemplateTable::wide_dload() { | |
596 transition(vtos, dtos); | |
597 locals_index_wide(rbx); | |
598 __ movdbl(xmm0, daddress(rbx)); | |
599 } | |
600 | |
601 void TemplateTable::wide_aload() { | |
602 transition(vtos, atos); | |
603 locals_index_wide(rbx); | |
304 | 604 __ movptr(rax, aaddress(rbx)); |
0 | 605 } |
606 | |
607 void TemplateTable::index_check(Register array, Register index) { | |
608 // destroys rbx | |
609 // check array | |
610 __ null_check(array, arrayOopDesc::length_offset_in_bytes()); | |
611 // sign extend index for use by indexed load | |
304 | 612 __ movl2ptr(index, index); |
0 | 613 // check index |
614 __ cmpl(index, Address(array, arrayOopDesc::length_offset_in_bytes())); | |
615 if (index != rbx) { | |
616 // ??? convention: move aberrant index into ebx for exception message | |
617 assert(rbx != array, "different registers"); | |
618 __ movl(rbx, index); | |
619 } | |
620 __ jump_cc(Assembler::aboveEqual, | |
621 ExternalAddress(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry)); | |
622 } | |
623 | |
624 void TemplateTable::iaload() { | |
625 transition(itos, itos); | |
626 __ pop_ptr(rdx); | |
627 // eax: index | |
628 // rdx: array | |
629 index_check(rdx, rax); // kills rbx | |
630 __ movl(rax, Address(rdx, rax, | |
631 Address::times_4, | |
632 arrayOopDesc::base_offset_in_bytes(T_INT))); | |
633 } | |
634 | |
635 void TemplateTable::laload() { | |
636 transition(itos, ltos); | |
637 __ pop_ptr(rdx); | |
638 // eax: index | |
639 // rdx: array | |
640 index_check(rdx, rax); // kills rbx | |
641 __ movq(rax, Address(rdx, rbx, | |
642 Address::times_8, | |
643 arrayOopDesc::base_offset_in_bytes(T_LONG))); | |
644 } | |
645 | |
646 void TemplateTable::faload() { | |
647 transition(itos, ftos); | |
648 __ pop_ptr(rdx); | |
649 // eax: index | |
650 // rdx: array | |
651 index_check(rdx, rax); // kills rbx | |
652 __ movflt(xmm0, Address(rdx, rax, | |
653 Address::times_4, | |
654 arrayOopDesc::base_offset_in_bytes(T_FLOAT))); | |
655 } | |
656 | |
657 void TemplateTable::daload() { | |
658 transition(itos, dtos); | |
659 __ pop_ptr(rdx); | |
660 // eax: index | |
661 // rdx: array | |
662 index_check(rdx, rax); // kills rbx | |
663 __ movdbl(xmm0, Address(rdx, rax, | |
664 Address::times_8, | |
665 arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); | |
666 } | |
667 | |
668 void TemplateTable::aaload() { | |
669 transition(itos, atos); | |
670 __ pop_ptr(rdx); | |
671 // eax: index | |
672 // rdx: array | |
673 index_check(rdx, rax); // kills rbx | |
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674 __ load_heap_oop(rax, Address(rdx, rax, |
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675 UseCompressedOops ? Address::times_4 : Address::times_8, |
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676 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
0 | 677 } |
678 | |
679 void TemplateTable::baload() { | |
680 transition(itos, itos); | |
681 __ pop_ptr(rdx); | |
682 // eax: index | |
683 // rdx: array | |
684 index_check(rdx, rax); // kills rbx | |
685 __ load_signed_byte(rax, | |
686 Address(rdx, rax, | |
687 Address::times_1, | |
688 arrayOopDesc::base_offset_in_bytes(T_BYTE))); | |
689 } | |
690 | |
691 void TemplateTable::caload() { | |
692 transition(itos, itos); | |
693 __ pop_ptr(rdx); | |
694 // eax: index | |
695 // rdx: array | |
696 index_check(rdx, rax); // kills rbx | |
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697 __ load_unsigned_short(rax, |
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698 Address(rdx, rax, |
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699 Address::times_2, |
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700 arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
0 | 701 } |
702 | |
703 // iload followed by caload frequent pair | |
704 void TemplateTable::fast_icaload() { | |
705 transition(vtos, itos); | |
706 // load index out of locals | |
707 locals_index(rbx); | |
708 __ movl(rax, iaddress(rbx)); | |
709 | |
710 // eax: index | |
711 // rdx: array | |
712 __ pop_ptr(rdx); | |
713 index_check(rdx, rax); // kills rbx | |
622
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714 __ load_unsigned_short(rax, |
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715 Address(rdx, rax, |
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716 Address::times_2, |
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717 arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
0 | 718 } |
719 | |
720 void TemplateTable::saload() { | |
721 transition(itos, itos); | |
722 __ pop_ptr(rdx); | |
723 // eax: index | |
724 // rdx: array | |
725 index_check(rdx, rax); // kills rbx | |
622
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726 __ load_signed_short(rax, |
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727 Address(rdx, rax, |
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728 Address::times_2, |
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729 arrayOopDesc::base_offset_in_bytes(T_SHORT))); |
0 | 730 } |
731 | |
732 void TemplateTable::iload(int n) { | |
733 transition(vtos, itos); | |
734 __ movl(rax, iaddress(n)); | |
735 } | |
736 | |
737 void TemplateTable::lload(int n) { | |
738 transition(vtos, ltos); | |
739 __ movq(rax, laddress(n)); | |
740 } | |
741 | |
742 void TemplateTable::fload(int n) { | |
743 transition(vtos, ftos); | |
744 __ movflt(xmm0, faddress(n)); | |
745 } | |
746 | |
747 void TemplateTable::dload(int n) { | |
748 transition(vtos, dtos); | |
749 __ movdbl(xmm0, daddress(n)); | |
750 } | |
751 | |
752 void TemplateTable::aload(int n) { | |
753 transition(vtos, atos); | |
304 | 754 __ movptr(rax, aaddress(n)); |
0 | 755 } |
756 | |
757 void TemplateTable::aload_0() { | |
758 transition(vtos, atos); | |
759 // According to bytecode histograms, the pairs: | |
760 // | |
761 // _aload_0, _fast_igetfield | |
762 // _aload_0, _fast_agetfield | |
763 // _aload_0, _fast_fgetfield | |
764 // | |
765 // occur frequently. If RewriteFrequentPairs is set, the (slow) | |
766 // _aload_0 bytecode checks if the next bytecode is either | |
767 // _fast_igetfield, _fast_agetfield or _fast_fgetfield and then | |
768 // rewrites the current bytecode into a pair bytecode; otherwise it | |
769 // rewrites the current bytecode into _fast_aload_0 that doesn't do | |
770 // the pair check anymore. | |
771 // | |
772 // Note: If the next bytecode is _getfield, the rewrite must be | |
773 // delayed, otherwise we may miss an opportunity for a pair. | |
774 // | |
775 // Also rewrite frequent pairs | |
776 // aload_0, aload_1 | |
777 // aload_0, iload_1 | |
778 // These bytecodes with a small amount of code are most profitable | |
779 // to rewrite | |
780 if (RewriteFrequentPairs) { | |
781 Label rewrite, done; | |
782 const Register bc = c_rarg3; | |
783 assert(rbx != bc, "register damaged"); | |
784 // get next byte | |
785 __ load_unsigned_byte(rbx, | |
786 at_bcp(Bytecodes::length_for(Bytecodes::_aload_0))); | |
787 | |
788 // do actual aload_0 | |
789 aload(0); | |
790 | |
791 // if _getfield then wait with rewrite | |
792 __ cmpl(rbx, Bytecodes::_getfield); | |
793 __ jcc(Assembler::equal, done); | |
794 | |
795 // if _igetfield then reqrite to _fast_iaccess_0 | |
796 assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == | |
797 Bytecodes::_aload_0, | |
798 "fix bytecode definition"); | |
799 __ cmpl(rbx, Bytecodes::_fast_igetfield); | |
800 __ movl(bc, Bytecodes::_fast_iaccess_0); | |
801 __ jccb(Assembler::equal, rewrite); | |
802 | |
803 // if _agetfield then reqrite to _fast_aaccess_0 | |
804 assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == | |
805 Bytecodes::_aload_0, | |
806 "fix bytecode definition"); | |
807 __ cmpl(rbx, Bytecodes::_fast_agetfield); | |
808 __ movl(bc, Bytecodes::_fast_aaccess_0); | |
809 __ jccb(Assembler::equal, rewrite); | |
810 | |
811 // if _fgetfield then reqrite to _fast_faccess_0 | |
812 assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == | |
813 Bytecodes::_aload_0, | |
814 "fix bytecode definition"); | |
815 __ cmpl(rbx, Bytecodes::_fast_fgetfield); | |
816 __ movl(bc, Bytecodes::_fast_faccess_0); | |
817 __ jccb(Assembler::equal, rewrite); | |
818 | |
819 // else rewrite to _fast_aload0 | |
820 assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == | |
821 Bytecodes::_aload_0, | |
822 "fix bytecode definition"); | |
823 __ movl(bc, Bytecodes::_fast_aload_0); | |
824 | |
825 // rewrite | |
826 // bc: fast bytecode | |
827 __ bind(rewrite); | |
828 patch_bytecode(Bytecodes::_aload_0, bc, rbx, false); | |
829 | |
830 __ bind(done); | |
831 } else { | |
832 aload(0); | |
833 } | |
834 } | |
835 | |
836 void TemplateTable::istore() { | |
837 transition(itos, vtos); | |
838 locals_index(rbx); | |
839 __ movl(iaddress(rbx), rax); | |
840 } | |
841 | |
842 void TemplateTable::lstore() { | |
843 transition(ltos, vtos); | |
844 locals_index(rbx); | |
845 __ movq(laddress(rbx), rax); | |
846 } | |
847 | |
848 void TemplateTable::fstore() { | |
849 transition(ftos, vtos); | |
850 locals_index(rbx); | |
851 __ movflt(faddress(rbx), xmm0); | |
852 } | |
853 | |
854 void TemplateTable::dstore() { | |
855 transition(dtos, vtos); | |
856 locals_index(rbx); | |
857 __ movdbl(daddress(rbx), xmm0); | |
858 } | |
859 | |
860 void TemplateTable::astore() { | |
861 transition(vtos, vtos); | |
1506 | 862 __ pop_ptr(rax); |
0 | 863 locals_index(rbx); |
304 | 864 __ movptr(aaddress(rbx), rax); |
0 | 865 } |
866 | |
867 void TemplateTable::wide_istore() { | |
868 transition(vtos, vtos); | |
869 __ pop_i(); | |
870 locals_index_wide(rbx); | |
871 __ movl(iaddress(rbx), rax); | |
872 } | |
873 | |
874 void TemplateTable::wide_lstore() { | |
875 transition(vtos, vtos); | |
876 __ pop_l(); | |
877 locals_index_wide(rbx); | |
878 __ movq(laddress(rbx), rax); | |
879 } | |
880 | |
881 void TemplateTable::wide_fstore() { | |
882 transition(vtos, vtos); | |
883 __ pop_f(); | |
884 locals_index_wide(rbx); | |
885 __ movflt(faddress(rbx), xmm0); | |
886 } | |
887 | |
888 void TemplateTable::wide_dstore() { | |
889 transition(vtos, vtos); | |
890 __ pop_d(); | |
891 locals_index_wide(rbx); | |
892 __ movdbl(daddress(rbx), xmm0); | |
893 } | |
894 | |
895 void TemplateTable::wide_astore() { | |
896 transition(vtos, vtos); | |
1506 | 897 __ pop_ptr(rax); |
0 | 898 locals_index_wide(rbx); |
304 | 899 __ movptr(aaddress(rbx), rax); |
0 | 900 } |
901 | |
902 void TemplateTable::iastore() { | |
903 transition(itos, vtos); | |
904 __ pop_i(rbx); | |
905 __ pop_ptr(rdx); | |
906 // eax: value | |
907 // ebx: index | |
908 // rdx: array | |
909 index_check(rdx, rbx); // prefer index in ebx | |
910 __ movl(Address(rdx, rbx, | |
911 Address::times_4, | |
912 arrayOopDesc::base_offset_in_bytes(T_INT)), | |
913 rax); | |
914 } | |
915 | |
916 void TemplateTable::lastore() { | |
917 transition(ltos, vtos); | |
918 __ pop_i(rbx); | |
919 __ pop_ptr(rdx); | |
920 // rax: value | |
921 // ebx: index | |
922 // rdx: array | |
923 index_check(rdx, rbx); // prefer index in ebx | |
924 __ movq(Address(rdx, rbx, | |
925 Address::times_8, | |
926 arrayOopDesc::base_offset_in_bytes(T_LONG)), | |
927 rax); | |
928 } | |
929 | |
930 void TemplateTable::fastore() { | |
931 transition(ftos, vtos); | |
932 __ pop_i(rbx); | |
933 __ pop_ptr(rdx); | |
934 // xmm0: value | |
935 // ebx: index | |
936 // rdx: array | |
937 index_check(rdx, rbx); // prefer index in ebx | |
938 __ movflt(Address(rdx, rbx, | |
939 Address::times_4, | |
940 arrayOopDesc::base_offset_in_bytes(T_FLOAT)), | |
941 xmm0); | |
942 } | |
943 | |
944 void TemplateTable::dastore() { | |
945 transition(dtos, vtos); | |
946 __ pop_i(rbx); | |
947 __ pop_ptr(rdx); | |
948 // xmm0: value | |
949 // ebx: index | |
950 // rdx: array | |
951 index_check(rdx, rbx); // prefer index in ebx | |
952 __ movdbl(Address(rdx, rbx, | |
953 Address::times_8, | |
954 arrayOopDesc::base_offset_in_bytes(T_DOUBLE)), | |
955 xmm0); | |
956 } | |
957 | |
958 void TemplateTable::aastore() { | |
959 Label is_null, ok_is_subtype, done; | |
960 transition(vtos, vtos); | |
961 // stack: ..., array, index, value | |
304 | 962 __ movptr(rax, at_tos()); // value |
0 | 963 __ movl(rcx, at_tos_p1()); // index |
304 | 964 __ movptr(rdx, at_tos_p2()); // array |
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965 |
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966 Address element_address(rdx, rcx, |
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967 UseCompressedOops? Address::times_4 : Address::times_8, |
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968 arrayOopDesc::base_offset_in_bytes(T_OBJECT)); |
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969 |
0 | 970 index_check(rdx, rcx); // kills rbx |
971 // do array store check - check for NULL value first | |
304 | 972 __ testptr(rax, rax); |
0 | 973 __ jcc(Assembler::zero, is_null); |
974 | |
975 // Move subklass into rbx | |
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976 __ load_klass(rbx, rax); |
0 | 977 // Move superklass into rax |
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978 __ load_klass(rax, rdx); |
304 | 979 __ movptr(rax, Address(rax, |
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980 ObjArrayKlass::element_klass_offset())); |
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981 // Compress array + index*oopSize + 12 into a single register. Frees rcx. |
362 | 982 __ lea(rdx, element_address); |
0 | 983 |
984 // Generate subtype check. Blows rcx, rdi | |
985 // Superklass in rax. Subklass in rbx. | |
986 __ gen_subtype_check(rbx, ok_is_subtype); | |
987 | |
988 // Come here on failure | |
989 // object is at TOS | |
990 __ jump(ExternalAddress(Interpreter::_throw_ArrayStoreException_entry)); | |
991 | |
992 // Come here on success | |
993 __ bind(ok_is_subtype); | |
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994 |
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995 // Get the value we will store |
362 | 996 __ movptr(rax, at_tos()); |
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997 // Now store using the appropriate barrier |
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998 do_oop_store(_masm, Address(rdx, 0), rax, _bs->kind(), true); |
0 | 999 __ jmp(done); |
1000 | |
1001 // Have a NULL in rax, rdx=array, ecx=index. Store NULL at ary[idx] | |
1002 __ bind(is_null); | |
1003 __ profile_null_seen(rbx); | |
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1004 |
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1005 // Store a NULL |
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1006 do_oop_store(_masm, element_address, noreg, _bs->kind(), true); |
0 | 1007 |
1008 // Pop stack arguments | |
1009 __ bind(done); | |
1506 | 1010 __ addptr(rsp, 3 * Interpreter::stackElementSize); |
0 | 1011 } |
1012 | |
1013 void TemplateTable::bastore() { | |
1014 transition(itos, vtos); | |
1015 __ pop_i(rbx); | |
1016 __ pop_ptr(rdx); | |
1017 // eax: value | |
1018 // ebx: index | |
1019 // rdx: array | |
1020 index_check(rdx, rbx); // prefer index in ebx | |
1021 __ movb(Address(rdx, rbx, | |
1022 Address::times_1, | |
1023 arrayOopDesc::base_offset_in_bytes(T_BYTE)), | |
1024 rax); | |
1025 } | |
1026 | |
1027 void TemplateTable::castore() { | |
1028 transition(itos, vtos); | |
1029 __ pop_i(rbx); | |
1030 __ pop_ptr(rdx); | |
1031 // eax: value | |
1032 // ebx: index | |
1033 // rdx: array | |
1034 index_check(rdx, rbx); // prefer index in ebx | |
1035 __ movw(Address(rdx, rbx, | |
1036 Address::times_2, | |
1037 arrayOopDesc::base_offset_in_bytes(T_CHAR)), | |
1038 rax); | |
1039 } | |
1040 | |
1041 void TemplateTable::sastore() { | |
1042 castore(); | |
1043 } | |
1044 | |
1045 void TemplateTable::istore(int n) { | |
1046 transition(itos, vtos); | |
1047 __ movl(iaddress(n), rax); | |
1048 } | |
1049 | |
1050 void TemplateTable::lstore(int n) { | |
1051 transition(ltos, vtos); | |
1052 __ movq(laddress(n), rax); | |
1053 } | |
1054 | |
1055 void TemplateTable::fstore(int n) { | |
1056 transition(ftos, vtos); | |
1057 __ movflt(faddress(n), xmm0); | |
1058 } | |
1059 | |
1060 void TemplateTable::dstore(int n) { | |
1061 transition(dtos, vtos); | |
1062 __ movdbl(daddress(n), xmm0); | |
1063 } | |
1064 | |
1065 void TemplateTable::astore(int n) { | |
1066 transition(vtos, vtos); | |
1506 | 1067 __ pop_ptr(rax); |
304 | 1068 __ movptr(aaddress(n), rax); |
0 | 1069 } |
1070 | |
1071 void TemplateTable::pop() { | |
1072 transition(vtos, vtos); | |
1506 | 1073 __ addptr(rsp, Interpreter::stackElementSize); |
0 | 1074 } |
1075 | |
1076 void TemplateTable::pop2() { | |
1077 transition(vtos, vtos); | |
1506 | 1078 __ addptr(rsp, 2 * Interpreter::stackElementSize); |
0 | 1079 } |
1080 | |
1081 void TemplateTable::dup() { | |
1082 transition(vtos, vtos); | |
1506 | 1083 __ load_ptr(0, rax); |
1084 __ push_ptr(rax); | |
0 | 1085 // stack: ..., a, a |
1086 } | |
1087 | |
1088 void TemplateTable::dup_x1() { | |
1089 transition(vtos, vtos); | |
1090 // stack: ..., a, b | |
1506 | 1091 __ load_ptr( 0, rax); // load b |
1092 __ load_ptr( 1, rcx); // load a | |
1093 __ store_ptr(1, rax); // store b | |
1094 __ store_ptr(0, rcx); // store a | |
1095 __ push_ptr(rax); // push b | |
0 | 1096 // stack: ..., b, a, b |
1097 } | |
1098 | |
1099 void TemplateTable::dup_x2() { | |
1100 transition(vtos, vtos); | |
1101 // stack: ..., a, b, c | |
1506 | 1102 __ load_ptr( 0, rax); // load c |
1103 __ load_ptr( 2, rcx); // load a | |
1104 __ store_ptr(2, rax); // store c in a | |
1105 __ push_ptr(rax); // push c | |
0 | 1106 // stack: ..., c, b, c, c |
1506 | 1107 __ load_ptr( 2, rax); // load b |
1108 __ store_ptr(2, rcx); // store a in b | |
0 | 1109 // stack: ..., c, a, c, c |
1506 | 1110 __ store_ptr(1, rax); // store b in c |
0 | 1111 // stack: ..., c, a, b, c |
1112 } | |
1113 | |
1114 void TemplateTable::dup2() { | |
1115 transition(vtos, vtos); | |
1116 // stack: ..., a, b | |
1506 | 1117 __ load_ptr(1, rax); // load a |
1118 __ push_ptr(rax); // push a | |
1119 __ load_ptr(1, rax); // load b | |
1120 __ push_ptr(rax); // push b | |
0 | 1121 // stack: ..., a, b, a, b |
1122 } | |
1123 | |
1124 void TemplateTable::dup2_x1() { | |
1125 transition(vtos, vtos); | |
1126 // stack: ..., a, b, c | |
1506 | 1127 __ load_ptr( 0, rcx); // load c |
1128 __ load_ptr( 1, rax); // load b | |
1129 __ push_ptr(rax); // push b | |
1130 __ push_ptr(rcx); // push c | |
0 | 1131 // stack: ..., a, b, c, b, c |
1506 | 1132 __ store_ptr(3, rcx); // store c in b |
0 | 1133 // stack: ..., a, c, c, b, c |
1506 | 1134 __ load_ptr( 4, rcx); // load a |
1135 __ store_ptr(2, rcx); // store a in 2nd c | |
0 | 1136 // stack: ..., a, c, a, b, c |
1506 | 1137 __ store_ptr(4, rax); // store b in a |
0 | 1138 // stack: ..., b, c, a, b, c |
1139 } | |
1140 | |
1141 void TemplateTable::dup2_x2() { | |
1142 transition(vtos, vtos); | |
1143 // stack: ..., a, b, c, d | |
1506 | 1144 __ load_ptr( 0, rcx); // load d |
1145 __ load_ptr( 1, rax); // load c | |
1146 __ push_ptr(rax); // push c | |
1147 __ push_ptr(rcx); // push d | |
0 | 1148 // stack: ..., a, b, c, d, c, d |
1506 | 1149 __ load_ptr( 4, rax); // load b |
1150 __ store_ptr(2, rax); // store b in d | |
1151 __ store_ptr(4, rcx); // store d in b | |
0 | 1152 // stack: ..., a, d, c, b, c, d |
1506 | 1153 __ load_ptr( 5, rcx); // load a |
1154 __ load_ptr( 3, rax); // load c | |
1155 __ store_ptr(3, rcx); // store a in c | |
1156 __ store_ptr(5, rax); // store c in a | |
0 | 1157 // stack: ..., c, d, a, b, c, d |
1158 } | |
1159 | |
1160 void TemplateTable::swap() { | |
1161 transition(vtos, vtos); | |
1162 // stack: ..., a, b | |
1506 | 1163 __ load_ptr( 1, rcx); // load a |
1164 __ load_ptr( 0, rax); // load b | |
1165 __ store_ptr(0, rcx); // store a in b | |
1166 __ store_ptr(1, rax); // store b in a | |
0 | 1167 // stack: ..., b, a |
1168 } | |
1169 | |
1170 void TemplateTable::iop2(Operation op) { | |
1171 transition(itos, itos); | |
1172 switch (op) { | |
1173 case add : __ pop_i(rdx); __ addl (rax, rdx); break; | |
1174 case sub : __ movl(rdx, rax); __ pop_i(rax); __ subl (rax, rdx); break; | |
1175 case mul : __ pop_i(rdx); __ imull(rax, rdx); break; | |
1176 case _and : __ pop_i(rdx); __ andl (rax, rdx); break; | |
1177 case _or : __ pop_i(rdx); __ orl (rax, rdx); break; | |
1178 case _xor : __ pop_i(rdx); __ xorl (rax, rdx); break; | |
1179 case shl : __ movl(rcx, rax); __ pop_i(rax); __ shll (rax); break; | |
1180 case shr : __ movl(rcx, rax); __ pop_i(rax); __ sarl (rax); break; | |
1181 case ushr : __ movl(rcx, rax); __ pop_i(rax); __ shrl (rax); break; | |
1182 default : ShouldNotReachHere(); | |
1183 } | |
1184 } | |
1185 | |
1186 void TemplateTable::lop2(Operation op) { | |
1187 transition(ltos, ltos); | |
1188 switch (op) { | |
1506 | 1189 case add : __ pop_l(rdx); __ addptr(rax, rdx); break; |
1190 case sub : __ mov(rdx, rax); __ pop_l(rax); __ subptr(rax, rdx); break; | |
1191 case _and : __ pop_l(rdx); __ andptr(rax, rdx); break; | |
1192 case _or : __ pop_l(rdx); __ orptr (rax, rdx); break; | |
1193 case _xor : __ pop_l(rdx); __ xorptr(rax, rdx); break; | |
1194 default : ShouldNotReachHere(); | |
0 | 1195 } |
1196 } | |
1197 | |
1198 void TemplateTable::idiv() { | |
1199 transition(itos, itos); | |
1200 __ movl(rcx, rax); | |
1201 __ pop_i(rax); | |
1202 // Note: could xor eax and ecx and compare with (-1 ^ min_int). If | |
1203 // they are not equal, one could do a normal division (no correction | |
1204 // needed), which may speed up this implementation for the common case. | |
1205 // (see also JVM spec., p.243 & p.271) | |
1206 __ corrected_idivl(rcx); | |
1207 } | |
1208 | |
1209 void TemplateTable::irem() { | |
1210 transition(itos, itos); | |
1211 __ movl(rcx, rax); | |
1212 __ pop_i(rax); | |
1213 // Note: could xor eax and ecx and compare with (-1 ^ min_int). If | |
1214 // they are not equal, one could do a normal division (no correction | |
1215 // needed), which may speed up this implementation for the common case. | |
1216 // (see also JVM spec., p.243 & p.271) | |
1217 __ corrected_idivl(rcx); | |
1218 __ movl(rax, rdx); | |
1219 } | |
1220 | |
1221 void TemplateTable::lmul() { | |
1222 transition(ltos, ltos); | |
1223 __ pop_l(rdx); | |
1224 __ imulq(rax, rdx); | |
1225 } | |
1226 | |
1227 void TemplateTable::ldiv() { | |
1228 transition(ltos, ltos); | |
304 | 1229 __ mov(rcx, rax); |
0 | 1230 __ pop_l(rax); |
1231 // generate explicit div0 check | |
1232 __ testq(rcx, rcx); | |
1233 __ jump_cc(Assembler::zero, | |
1234 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1235 // Note: could xor rax and rcx and compare with (-1 ^ min_int). If | |
1236 // they are not equal, one could do a normal division (no correction | |
1237 // needed), which may speed up this implementation for the common case. | |
1238 // (see also JVM spec., p.243 & p.271) | |
1239 __ corrected_idivq(rcx); // kills rbx | |
1240 } | |
1241 | |
1242 void TemplateTable::lrem() { | |
1243 transition(ltos, ltos); | |
304 | 1244 __ mov(rcx, rax); |
0 | 1245 __ pop_l(rax); |
1246 __ testq(rcx, rcx); | |
1247 __ jump_cc(Assembler::zero, | |
1248 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1249 // Note: could xor rax and rcx and compare with (-1 ^ min_int). If | |
1250 // they are not equal, one could do a normal division (no correction | |
1251 // needed), which may speed up this implementation for the common case. | |
1252 // (see also JVM spec., p.243 & p.271) | |
1253 __ corrected_idivq(rcx); // kills rbx | |
304 | 1254 __ mov(rax, rdx); |
0 | 1255 } |
1256 | |
1257 void TemplateTable::lshl() { | |
1258 transition(itos, ltos); | |
1259 __ movl(rcx, rax); // get shift count | |
1260 __ pop_l(rax); // get shift value | |
1261 __ shlq(rax); | |
1262 } | |
1263 | |
1264 void TemplateTable::lshr() { | |
1265 transition(itos, ltos); | |
1266 __ movl(rcx, rax); // get shift count | |
1267 __ pop_l(rax); // get shift value | |
1268 __ sarq(rax); | |
1269 } | |
1270 | |
1271 void TemplateTable::lushr() { | |
1272 transition(itos, ltos); | |
1273 __ movl(rcx, rax); // get shift count | |
1274 __ pop_l(rax); // get shift value | |
1275 __ shrq(rax); | |
1276 } | |
1277 | |
1278 void TemplateTable::fop2(Operation op) { | |
1279 transition(ftos, ftos); | |
1280 switch (op) { | |
1281 case add: | |
1282 __ addss(xmm0, at_rsp()); | |
1506 | 1283 __ addptr(rsp, Interpreter::stackElementSize); |
0 | 1284 break; |
1285 case sub: | |
1286 __ movflt(xmm1, xmm0); | |
1287 __ pop_f(xmm0); | |
1288 __ subss(xmm0, xmm1); | |
1289 break; | |
1290 case mul: | |
1291 __ mulss(xmm0, at_rsp()); | |
1506 | 1292 __ addptr(rsp, Interpreter::stackElementSize); |
0 | 1293 break; |
1294 case div: | |
1295 __ movflt(xmm1, xmm0); | |
1296 __ pop_f(xmm0); | |
1297 __ divss(xmm0, xmm1); | |
1298 break; | |
1299 case rem: | |
1300 __ movflt(xmm1, xmm0); | |
1301 __ pop_f(xmm0); | |
1302 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::frem), 2); | |
1303 break; | |
1304 default: | |
1305 ShouldNotReachHere(); | |
1306 break; | |
1307 } | |
1308 } | |
1309 | |
1310 void TemplateTable::dop2(Operation op) { | |
1311 transition(dtos, dtos); | |
1312 switch (op) { | |
1313 case add: | |
1314 __ addsd(xmm0, at_rsp()); | |
1506 | 1315 __ addptr(rsp, 2 * Interpreter::stackElementSize); |
0 | 1316 break; |
1317 case sub: | |
1318 __ movdbl(xmm1, xmm0); | |
1319 __ pop_d(xmm0); | |
1320 __ subsd(xmm0, xmm1); | |
1321 break; | |
1322 case mul: | |
1323 __ mulsd(xmm0, at_rsp()); | |
1506 | 1324 __ addptr(rsp, 2 * Interpreter::stackElementSize); |
0 | 1325 break; |
1326 case div: | |
1327 __ movdbl(xmm1, xmm0); | |
1328 __ pop_d(xmm0); | |
1329 __ divsd(xmm0, xmm1); | |
1330 break; | |
1331 case rem: | |
1332 __ movdbl(xmm1, xmm0); | |
1333 __ pop_d(xmm0); | |
1334 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::drem), 2); | |
1335 break; | |
1336 default: | |
1337 ShouldNotReachHere(); | |
1338 break; | |
1339 } | |
1340 } | |
1341 | |
1342 void TemplateTable::ineg() { | |
1343 transition(itos, itos); | |
1344 __ negl(rax); | |
1345 } | |
1346 | |
1347 void TemplateTable::lneg() { | |
1348 transition(ltos, ltos); | |
1349 __ negq(rax); | |
1350 } | |
1351 | |
1352 // Note: 'double' and 'long long' have 32-bits alignment on x86. | |
1353 static jlong* double_quadword(jlong *adr, jlong lo, jlong hi) { | |
1354 // Use the expression (adr)&(~0xF) to provide 128-bits aligned address | |
1355 // of 128-bits operands for SSE instructions. | |
1356 jlong *operand = (jlong*)(((intptr_t)adr)&((intptr_t)(~0xF))); | |
1357 // Store the value to a 128-bits operand. | |
1358 operand[0] = lo; | |
1359 operand[1] = hi; | |
1360 return operand; | |
1361 } | |
1362 | |
1363 // Buffer for 128-bits masks used by SSE instructions. | |
1364 static jlong float_signflip_pool[2*2]; | |
1365 static jlong double_signflip_pool[2*2]; | |
1366 | |
1367 void TemplateTable::fneg() { | |
1368 transition(ftos, ftos); | |
1369 static jlong *float_signflip = double_quadword(&float_signflip_pool[1], 0x8000000080000000, 0x8000000080000000); | |
1370 __ xorps(xmm0, ExternalAddress((address) float_signflip)); | |
1371 } | |
1372 | |
1373 void TemplateTable::dneg() { | |
1374 transition(dtos, dtos); | |
1375 static jlong *double_signflip = double_quadword(&double_signflip_pool[1], 0x8000000000000000, 0x8000000000000000); | |
1376 __ xorpd(xmm0, ExternalAddress((address) double_signflip)); | |
1377 } | |
1378 | |
1379 void TemplateTable::iinc() { | |
1380 transition(vtos, vtos); | |
1381 __ load_signed_byte(rdx, at_bcp(2)); // get constant | |
1382 locals_index(rbx); | |
1383 __ addl(iaddress(rbx), rdx); | |
1384 } | |
1385 | |
1386 void TemplateTable::wide_iinc() { | |
1387 transition(vtos, vtos); | |
1388 __ movl(rdx, at_bcp(4)); // get constant | |
1389 locals_index_wide(rbx); | |
1390 __ bswapl(rdx); // swap bytes & sign-extend constant | |
1391 __ sarl(rdx, 16); | |
1392 __ addl(iaddress(rbx), rdx); | |
1393 // Note: should probably use only one movl to get both | |
1394 // the index and the constant -> fix this | |
1395 } | |
1396 | |
1397 void TemplateTable::convert() { | |
1398 // Checking | |
1399 #ifdef ASSERT | |
1400 { | |
1401 TosState tos_in = ilgl; | |
1402 TosState tos_out = ilgl; | |
1403 switch (bytecode()) { | |
1404 case Bytecodes::_i2l: // fall through | |
1405 case Bytecodes::_i2f: // fall through | |
1406 case Bytecodes::_i2d: // fall through | |
1407 case Bytecodes::_i2b: // fall through | |
1408 case Bytecodes::_i2c: // fall through | |
1409 case Bytecodes::_i2s: tos_in = itos; break; | |
1410 case Bytecodes::_l2i: // fall through | |
1411 case Bytecodes::_l2f: // fall through | |
1412 case Bytecodes::_l2d: tos_in = ltos; break; | |
1413 case Bytecodes::_f2i: // fall through | |
1414 case Bytecodes::_f2l: // fall through | |
1415 case Bytecodes::_f2d: tos_in = ftos; break; | |
1416 case Bytecodes::_d2i: // fall through | |
1417 case Bytecodes::_d2l: // fall through | |
1418 case Bytecodes::_d2f: tos_in = dtos; break; | |
1419 default : ShouldNotReachHere(); | |
1420 } | |
1421 switch (bytecode()) { | |
1422 case Bytecodes::_l2i: // fall through | |
1423 case Bytecodes::_f2i: // fall through | |
1424 case Bytecodes::_d2i: // fall through | |
1425 case Bytecodes::_i2b: // fall through | |
1426 case Bytecodes::_i2c: // fall through | |
1427 case Bytecodes::_i2s: tos_out = itos; break; | |
1428 case Bytecodes::_i2l: // fall through | |
1429 case Bytecodes::_f2l: // fall through | |
1430 case Bytecodes::_d2l: tos_out = ltos; break; | |
1431 case Bytecodes::_i2f: // fall through | |
1432 case Bytecodes::_l2f: // fall through | |
1433 case Bytecodes::_d2f: tos_out = ftos; break; | |
1434 case Bytecodes::_i2d: // fall through | |
1435 case Bytecodes::_l2d: // fall through | |
1436 case Bytecodes::_f2d: tos_out = dtos; break; | |
1437 default : ShouldNotReachHere(); | |
1438 } | |
1439 transition(tos_in, tos_out); | |
1440 } | |
1441 #endif // ASSERT | |
1442 | |
1443 static const int64_t is_nan = 0x8000000000000000L; | |
1444 | |
1445 // Conversion | |
1446 switch (bytecode()) { | |
1447 case Bytecodes::_i2l: | |
1448 __ movslq(rax, rax); | |
1449 break; | |
1450 case Bytecodes::_i2f: | |
1451 __ cvtsi2ssl(xmm0, rax); | |
1452 break; | |
1453 case Bytecodes::_i2d: | |
1454 __ cvtsi2sdl(xmm0, rax); | |
1455 break; | |
1456 case Bytecodes::_i2b: | |
1457 __ movsbl(rax, rax); | |
1458 break; | |
1459 case Bytecodes::_i2c: | |
1460 __ movzwl(rax, rax); | |
1461 break; | |
1462 case Bytecodes::_i2s: | |
1463 __ movswl(rax, rax); | |
1464 break; | |
1465 case Bytecodes::_l2i: | |
1466 __ movl(rax, rax); | |
1467 break; | |
1468 case Bytecodes::_l2f: | |
1469 __ cvtsi2ssq(xmm0, rax); | |
1470 break; | |
1471 case Bytecodes::_l2d: | |
1472 __ cvtsi2sdq(xmm0, rax); | |
1473 break; | |
1474 case Bytecodes::_f2i: | |
1475 { | |
1476 Label L; | |
1477 __ cvttss2sil(rax, xmm0); | |
1478 __ cmpl(rax, 0x80000000); // NaN or overflow/underflow? | |
1479 __ jcc(Assembler::notEqual, L); | |
1480 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1); | |
1481 __ bind(L); | |
1482 } | |
1483 break; | |
1484 case Bytecodes::_f2l: | |
1485 { | |
1486 Label L; | |
1487 __ cvttss2siq(rax, xmm0); | |
1488 // NaN or overflow/underflow? | |
1489 __ cmp64(rax, ExternalAddress((address) &is_nan)); | |
1490 __ jcc(Assembler::notEqual, L); | |
1491 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1); | |
1492 __ bind(L); | |
1493 } | |
1494 break; | |
1495 case Bytecodes::_f2d: | |
1496 __ cvtss2sd(xmm0, xmm0); | |
1497 break; | |
1498 case Bytecodes::_d2i: | |
1499 { | |
1500 Label L; | |
1501 __ cvttsd2sil(rax, xmm0); | |
1502 __ cmpl(rax, 0x80000000); // NaN or overflow/underflow? | |
1503 __ jcc(Assembler::notEqual, L); | |
1504 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 1); | |
1505 __ bind(L); | |
1506 } | |
1507 break; | |
1508 case Bytecodes::_d2l: | |
1509 { | |
1510 Label L; | |
1511 __ cvttsd2siq(rax, xmm0); | |
1512 // NaN or overflow/underflow? | |
1513 __ cmp64(rax, ExternalAddress((address) &is_nan)); | |
1514 __ jcc(Assembler::notEqual, L); | |
1515 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 1); | |
1516 __ bind(L); | |
1517 } | |
1518 break; | |
1519 case Bytecodes::_d2f: | |
1520 __ cvtsd2ss(xmm0, xmm0); | |
1521 break; | |
1522 default: | |
1523 ShouldNotReachHere(); | |
1524 } | |
1525 } | |
1526 | |
1527 void TemplateTable::lcmp() { | |
1528 transition(ltos, itos); | |
1529 Label done; | |
1530 __ pop_l(rdx); | |
1531 __ cmpq(rdx, rax); | |
1532 __ movl(rax, -1); | |
1533 __ jccb(Assembler::less, done); | |
1534 __ setb(Assembler::notEqual, rax); | |
1535 __ movzbl(rax, rax); | |
1536 __ bind(done); | |
1537 } | |
1538 | |
1539 void TemplateTable::float_cmp(bool is_float, int unordered_result) { | |
1540 Label done; | |
1541 if (is_float) { | |
1542 // XXX get rid of pop here, use ... reg, mem32 | |
1543 __ pop_f(xmm1); | |
1544 __ ucomiss(xmm1, xmm0); | |
1545 } else { | |
1546 // XXX get rid of pop here, use ... reg, mem64 | |
1547 __ pop_d(xmm1); | |
1548 __ ucomisd(xmm1, xmm0); | |
1549 } | |
1550 if (unordered_result < 0) { | |
1551 __ movl(rax, -1); | |
1552 __ jccb(Assembler::parity, done); | |
1553 __ jccb(Assembler::below, done); | |
1554 __ setb(Assembler::notEqual, rdx); | |
1555 __ movzbl(rax, rdx); | |
1556 } else { | |
1557 __ movl(rax, 1); | |
1558 __ jccb(Assembler::parity, done); | |
1559 __ jccb(Assembler::above, done); | |
1560 __ movl(rax, 0); | |
1561 __ jccb(Assembler::equal, done); | |
1562 __ decrementl(rax); | |
1563 } | |
1564 __ bind(done); | |
1565 } | |
1566 | |
1567 void TemplateTable::branch(bool is_jsr, bool is_wide) { | |
1568 __ get_method(rcx); // rcx holds method | |
1569 __ profile_taken_branch(rax, rbx); // rax holds updated MDP, rbx | |
1570 // holds bumped taken count | |
1571 | |
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1572 const ByteSize be_offset = Method::backedge_counter_offset() + |
0 | 1573 InvocationCounter::counter_offset(); |
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1574 const ByteSize inv_offset = Method::invocation_counter_offset() + |
0 | 1575 InvocationCounter::counter_offset(); |
1576 const int method_offset = frame::interpreter_frame_method_offset * wordSize; | |
1577 | |
1578 // Load up edx with the branch displacement | |
1579 __ movl(rdx, at_bcp(1)); | |
1580 __ bswapl(rdx); | |
1581 | |
1582 if (!is_wide) { | |
1583 __ sarl(rdx, 16); | |
1584 } | |
304 | 1585 __ movl2ptr(rdx, rdx); |
0 | 1586 |
1587 // Handle all the JSR stuff here, then exit. | |
1588 // It's much shorter and cleaner than intermingling with the non-JSR | |
605 | 1589 // normal-branch stuff occurring below. |
0 | 1590 if (is_jsr) { |
1591 // Pre-load the next target bytecode into rbx | |
1592 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1, 0)); | |
1593 | |
1594 // compute return address as bci in rax | |
304 | 1595 __ lea(rax, at_bcp((is_wide ? 5 : 3) - |
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1596 in_bytes(ConstMethod::codes_offset()))); |
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1597 __ subptr(rax, Address(rcx, Method::const_offset())); |
0 | 1598 // Adjust the bcp in r13 by the displacement in rdx |
304 | 1599 __ addptr(r13, rdx); |
0 | 1600 // jsr returns atos that is not an oop |
1601 __ push_i(rax); | |
1602 __ dispatch_only(vtos); | |
1603 return; | |
1604 } | |
1605 | |
1606 // Normal (non-jsr) branch handling | |
1607 | |
1608 // Adjust the bcp in r13 by the displacement in rdx | |
304 | 1609 __ addptr(r13, rdx); |
0 | 1610 |
1611 assert(UseLoopCounter || !UseOnStackReplacement, | |
1612 "on-stack-replacement requires loop counters"); | |
1613 Label backedge_counter_overflow; | |
1614 Label profile_method; | |
1615 Label dispatch; | |
1616 if (UseLoopCounter) { | |
1617 // increment backedge counter for backward branches | |
1618 // rax: MDO | |
1619 // ebx: MDO bumped taken-count | |
1620 // rcx: method | |
1621 // rdx: target offset | |
1622 // r13: target bcp | |
1623 // r14: locals pointer | |
1624 __ testl(rdx, rdx); // check if forward or backward branch | |
1625 __ jcc(Assembler::positive, dispatch); // count only if backward branch | |
1783 | 1626 if (TieredCompilation) { |
1627 Label no_mdo; | |
1628 int increment = InvocationCounter::count_increment; | |
1629 int mask = ((1 << Tier0BackedgeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
1630 if (ProfileInterpreter) { | |
1631 // Are we profiling? | |
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1632 __ movptr(rbx, Address(rcx, in_bytes(Method::method_data_offset()))); |
1783 | 1633 __ testptr(rbx, rbx); |
1634 __ jccb(Assembler::zero, no_mdo); | |
1635 // Increment the MDO backedge counter | |
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1636 const Address mdo_backedge_counter(rbx, in_bytes(MethodData::backedge_counter_offset()) + |
1783 | 1637 in_bytes(InvocationCounter::counter_offset())); |
1638 __ increment_mask_and_jump(mdo_backedge_counter, increment, mask, | |
1639 rax, false, Assembler::zero, &backedge_counter_overflow); | |
1640 __ jmp(dispatch); | |
0 | 1641 } |
1783 | 1642 __ bind(no_mdo); |
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1643 // Increment backedge counter in Method* |
1783 | 1644 __ increment_mask_and_jump(Address(rcx, be_offset), increment, mask, |
1645 rax, false, Assembler::zero, &backedge_counter_overflow); | |
0 | 1646 } else { |
1783 | 1647 // increment counter |
1648 __ movl(rax, Address(rcx, be_offset)); // load backedge counter | |
1649 __ incrementl(rax, InvocationCounter::count_increment); // increment counter | |
1650 __ movl(Address(rcx, be_offset), rax); // store counter | |
1651 | |
1652 __ movl(rax, Address(rcx, inv_offset)); // load invocation counter | |
1653 __ andl(rax, InvocationCounter::count_mask_value); // and the status bits | |
1654 __ addl(rax, Address(rcx, be_offset)); // add both counters | |
1655 | |
1656 if (ProfileInterpreter) { | |
1657 // Test to see if we should create a method data oop | |
0 | 1658 __ cmp32(rax, |
1783 | 1659 ExternalAddress((address) &InvocationCounter::InterpreterProfileLimit)); |
1660 __ jcc(Assembler::less, dispatch); | |
1661 | |
1662 // if no method data exists, go to profile method | |
1663 __ test_method_data_pointer(rax, profile_method); | |
1664 | |
1665 if (UseOnStackReplacement) { | |
1666 // check for overflow against ebx which is the MDO taken count | |
1667 __ cmp32(rbx, | |
1668 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1669 __ jcc(Assembler::below, dispatch); | |
1670 | |
1671 // When ProfileInterpreter is on, the backedge_count comes | |
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1672 // from the MethodData*, which value does not get reset on |
1783 | 1673 // the call to frequency_counter_overflow(). To avoid |
1674 // excessive calls to the overflow routine while the method is | |
1675 // being compiled, add a second test to make sure the overflow | |
1676 // function is called only once every overflow_frequency. | |
1677 const int overflow_frequency = 1024; | |
1678 __ andl(rbx, overflow_frequency - 1); | |
1679 __ jcc(Assembler::zero, backedge_counter_overflow); | |
1680 | |
1681 } | |
1682 } else { | |
1683 if (UseOnStackReplacement) { | |
1684 // check for overflow against eax, which is the sum of the | |
1685 // counters | |
1686 __ cmp32(rax, | |
1687 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1688 __ jcc(Assembler::aboveEqual, backedge_counter_overflow); | |
1689 | |
1690 } | |
0 | 1691 } |
1692 } | |
1693 __ bind(dispatch); | |
1694 } | |
1695 | |
1696 // Pre-load the next target bytecode into rbx | |
1697 __ load_unsigned_byte(rbx, Address(r13, 0)); | |
1698 | |
1699 // continue with the bytecode @ target | |
1700 // eax: return bci for jsr's, unused otherwise | |
1701 // ebx: target bytecode | |
1702 // r13: target bcp | |
1703 __ dispatch_only(vtos); | |
1704 | |
1705 if (UseLoopCounter) { | |
1706 if (ProfileInterpreter) { | |
1707 // Out-of-line code to allocate method data oop. | |
1708 __ bind(profile_method); | |
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1709 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
0 | 1710 __ load_unsigned_byte(rbx, Address(r13, 0)); // restore target bytecode |
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1711 __ set_method_data_pointer_for_bcp(); |
0 | 1712 __ jmp(dispatch); |
1713 } | |
1714 | |
1715 if (UseOnStackReplacement) { | |
1716 // invocation counter overflow | |
1717 __ bind(backedge_counter_overflow); | |
304 | 1718 __ negptr(rdx); |
1719 __ addptr(rdx, r13); // branch bcp | |
0 | 1720 // IcoResult frequency_counter_overflow([JavaThread*], address branch_bcp) |
1721 __ call_VM(noreg, | |
1722 CAST_FROM_FN_PTR(address, | |
1723 InterpreterRuntime::frequency_counter_overflow), | |
1724 rdx); | |
1725 __ load_unsigned_byte(rbx, Address(r13, 0)); // restore target bytecode | |
1726 | |
1727 // rax: osr nmethod (osr ok) or NULL (osr not possible) | |
1728 // ebx: target bytecode | |
1729 // rdx: scratch | |
1730 // r14: locals pointer | |
1731 // r13: bcp | |
304 | 1732 __ testptr(rax, rax); // test result |
0 | 1733 __ jcc(Assembler::zero, dispatch); // no osr if null |
1734 // nmethod may have been invalidated (VM may block upon call_VM return) | |
1735 __ movl(rcx, Address(rax, nmethod::entry_bci_offset())); | |
1736 __ cmpl(rcx, InvalidOSREntryBci); | |
1737 __ jcc(Assembler::equal, dispatch); | |
1738 | |
1739 // We have the address of an on stack replacement routine in eax | |
1740 // We need to prepare to execute the OSR method. First we must | |
1741 // migrate the locals and monitors off of the stack. | |
1742 | |
304 | 1743 __ mov(r13, rax); // save the nmethod |
0 | 1744 |
1745 call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin)); | |
1746 | |
1747 // eax is OSR buffer, move it to expected parameter location | |
304 | 1748 __ mov(j_rarg0, rax); |
0 | 1749 |
1750 // We use j_rarg definitions here so that registers don't conflict as parameter | |
1751 // registers change across platforms as we are in the midst of a calling | |
1752 // sequence to the OSR nmethod and we don't want collision. These are NOT parameters. | |
1753 | |
1754 const Register retaddr = j_rarg2; | |
1755 const Register sender_sp = j_rarg1; | |
1756 | |
1757 // pop the interpreter frame | |
304 | 1758 __ movptr(sender_sp, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 1759 __ leave(); // remove frame anchor |
304 | 1760 __ pop(retaddr); // get return address |
1761 __ mov(rsp, sender_sp); // set sp to sender sp | |
0 | 1762 // Ensure compiled code always sees stack at proper alignment |
304 | 1763 __ andptr(rsp, -(StackAlignmentInBytes)); |
0 | 1764 |
1765 // unlike x86 we need no specialized return from compiled code | |
1766 // to the interpreter or the call stub. | |
1767 | |
1768 // push the return address | |
304 | 1769 __ push(retaddr); |
0 | 1770 |
1771 // and begin the OSR nmethod | |
1772 __ jmp(Address(r13, nmethod::osr_entry_point_offset())); | |
1773 } | |
1774 } | |
1775 } | |
1776 | |
1777 | |
1778 void TemplateTable::if_0cmp(Condition cc) { | |
1779 transition(itos, vtos); | |
1780 // assume branch is more often taken than not (loops use backward branches) | |
1781 Label not_taken; | |
1782 __ testl(rax, rax); | |
1783 __ jcc(j_not(cc), not_taken); | |
1784 branch(false, false); | |
1785 __ bind(not_taken); | |
1786 __ profile_not_taken_branch(rax); | |
1787 } | |
1788 | |
1789 void TemplateTable::if_icmp(Condition cc) { | |
1790 transition(itos, vtos); | |
1791 // assume branch is more often taken than not (loops use backward branches) | |
1792 Label not_taken; | |
1793 __ pop_i(rdx); | |
1794 __ cmpl(rdx, rax); | |
1795 __ jcc(j_not(cc), not_taken); | |
1796 branch(false, false); | |
1797 __ bind(not_taken); | |
1798 __ profile_not_taken_branch(rax); | |
1799 } | |
1800 | |
1801 void TemplateTable::if_nullcmp(Condition cc) { | |
1802 transition(atos, vtos); | |
1803 // assume branch is more often taken than not (loops use backward branches) | |
1804 Label not_taken; | |
304 | 1805 __ testptr(rax, rax); |
0 | 1806 __ jcc(j_not(cc), not_taken); |
1807 branch(false, false); | |
1808 __ bind(not_taken); | |
1809 __ profile_not_taken_branch(rax); | |
1810 } | |
1811 | |
1812 void TemplateTable::if_acmp(Condition cc) { | |
1813 transition(atos, vtos); | |
1814 // assume branch is more often taken than not (loops use backward branches) | |
1815 Label not_taken; | |
1816 __ pop_ptr(rdx); | |
304 | 1817 __ cmpptr(rdx, rax); |
0 | 1818 __ jcc(j_not(cc), not_taken); |
1819 branch(false, false); | |
1820 __ bind(not_taken); | |
1821 __ profile_not_taken_branch(rax); | |
1822 } | |
1823 | |
1824 void TemplateTable::ret() { | |
1825 transition(vtos, vtos); | |
1826 locals_index(rbx); | |
304 | 1827 __ movslq(rbx, iaddress(rbx)); // get return bci, compute return bcp |
0 | 1828 __ profile_ret(rbx, rcx); |
1829 __ get_method(rax); | |
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1830 __ movptr(r13, Address(rax, Method::const_offset())); |
304 | 1831 __ lea(r13, Address(r13, rbx, Address::times_1, |
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1832 ConstMethod::codes_offset())); |
0 | 1833 __ dispatch_next(vtos); |
1834 } | |
1835 | |
1836 void TemplateTable::wide_ret() { | |
1837 transition(vtos, vtos); | |
1838 locals_index_wide(rbx); | |
304 | 1839 __ movptr(rbx, aaddress(rbx)); // get return bci, compute return bcp |
0 | 1840 __ profile_ret(rbx, rcx); |
1841 __ get_method(rax); | |
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1842 __ movptr(r13, Address(rax, Method::const_offset())); |
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1843 __ lea(r13, Address(r13, rbx, Address::times_1, ConstMethod::codes_offset())); |
0 | 1844 __ dispatch_next(vtos); |
1845 } | |
1846 | |
1847 void TemplateTable::tableswitch() { | |
1848 Label default_case, continue_execution; | |
1849 transition(itos, vtos); | |
1850 // align r13 | |
304 | 1851 __ lea(rbx, at_bcp(BytesPerInt)); |
1852 __ andptr(rbx, -BytesPerInt); | |
0 | 1853 // load lo & hi |
1854 __ movl(rcx, Address(rbx, BytesPerInt)); | |
1855 __ movl(rdx, Address(rbx, 2 * BytesPerInt)); | |
1856 __ bswapl(rcx); | |
1857 __ bswapl(rdx); | |
1858 // check against lo & hi | |
1859 __ cmpl(rax, rcx); | |
1860 __ jcc(Assembler::less, default_case); | |
1861 __ cmpl(rax, rdx); | |
1862 __ jcc(Assembler::greater, default_case); | |
1863 // lookup dispatch offset | |
1864 __ subl(rax, rcx); | |
1865 __ movl(rdx, Address(rbx, rax, Address::times_4, 3 * BytesPerInt)); | |
1866 __ profile_switch_case(rax, rbx, rcx); | |
1867 // continue execution | |
1868 __ bind(continue_execution); | |
1869 __ bswapl(rdx); | |
304 | 1870 __ movl2ptr(rdx, rdx); |
0 | 1871 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1)); |
304 | 1872 __ addptr(r13, rdx); |
0 | 1873 __ dispatch_only(vtos); |
1874 // handle default | |
1875 __ bind(default_case); | |
1876 __ profile_switch_default(rax); | |
1877 __ movl(rdx, Address(rbx, 0)); | |
1878 __ jmp(continue_execution); | |
1879 } | |
1880 | |
1881 void TemplateTable::lookupswitch() { | |
1882 transition(itos, itos); | |
1883 __ stop("lookupswitch bytecode should have been rewritten"); | |
1884 } | |
1885 | |
1886 void TemplateTable::fast_linearswitch() { | |
1887 transition(itos, vtos); | |
1888 Label loop_entry, loop, found, continue_execution; | |
1889 // bswap rax so we can avoid bswapping the table entries | |
1890 __ bswapl(rax); | |
1891 // align r13 | |
304 | 1892 __ lea(rbx, at_bcp(BytesPerInt)); // btw: should be able to get rid of |
1893 // this instruction (change offsets | |
1894 // below) | |
1895 __ andptr(rbx, -BytesPerInt); | |
0 | 1896 // set counter |
1897 __ movl(rcx, Address(rbx, BytesPerInt)); | |
1898 __ bswapl(rcx); | |
1899 __ jmpb(loop_entry); | |
1900 // table search | |
1901 __ bind(loop); | |
1902 __ cmpl(rax, Address(rbx, rcx, Address::times_8, 2 * BytesPerInt)); | |
1903 __ jcc(Assembler::equal, found); | |
1904 __ bind(loop_entry); | |
1905 __ decrementl(rcx); | |
1906 __ jcc(Assembler::greaterEqual, loop); | |
1907 // default case | |
1908 __ profile_switch_default(rax); | |
1909 __ movl(rdx, Address(rbx, 0)); | |
1910 __ jmp(continue_execution); | |
1911 // entry found -> get offset | |
1912 __ bind(found); | |
1913 __ movl(rdx, Address(rbx, rcx, Address::times_8, 3 * BytesPerInt)); | |
1914 __ profile_switch_case(rcx, rax, rbx); | |
1915 // continue execution | |
1916 __ bind(continue_execution); | |
1917 __ bswapl(rdx); | |
304 | 1918 __ movl2ptr(rdx, rdx); |
0 | 1919 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1)); |
304 | 1920 __ addptr(r13, rdx); |
0 | 1921 __ dispatch_only(vtos); |
1922 } | |
1923 | |
1924 void TemplateTable::fast_binaryswitch() { | |
1925 transition(itos, vtos); | |
1926 // Implementation using the following core algorithm: | |
1927 // | |
1928 // int binary_search(int key, LookupswitchPair* array, int n) { | |
1929 // // Binary search according to "Methodik des Programmierens" by | |
1930 // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985. | |
1931 // int i = 0; | |
1932 // int j = n; | |
1933 // while (i+1 < j) { | |
1934 // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q) | |
1935 // // with Q: for all i: 0 <= i < n: key < a[i] | |
1936 // // where a stands for the array and assuming that the (inexisting) | |
1937 // // element a[n] is infinitely big. | |
1938 // int h = (i + j) >> 1; | |
1939 // // i < h < j | |
1940 // if (key < array[h].fast_match()) { | |
1941 // j = h; | |
1942 // } else { | |
1943 // i = h; | |
1944 // } | |
1945 // } | |
1946 // // R: a[i] <= key < a[i+1] or Q | |
1947 // // (i.e., if key is within array, i is the correct index) | |
1948 // return i; | |
1949 // } | |
1950 | |
1951 // Register allocation | |
1952 const Register key = rax; // already set (tosca) | |
1953 const Register array = rbx; | |
1954 const Register i = rcx; | |
1955 const Register j = rdx; | |
1956 const Register h = rdi; | |
1957 const Register temp = rsi; | |
1958 | |
1959 // Find array start | |
304 | 1960 __ lea(array, at_bcp(3 * BytesPerInt)); // btw: should be able to |
1961 // get rid of this | |
1962 // instruction (change | |
1963 // offsets below) | |
1964 __ andptr(array, -BytesPerInt); | |
0 | 1965 |
1966 // Initialize i & j | |
1967 __ xorl(i, i); // i = 0; | |
1968 __ movl(j, Address(array, -BytesPerInt)); // j = length(array); | |
1969 | |
1970 // Convert j into native byteordering | |
1971 __ bswapl(j); | |
1972 | |
1973 // And start | |
1974 Label entry; | |
1975 __ jmp(entry); | |
1976 | |
1977 // binary search loop | |
1978 { | |
1979 Label loop; | |
1980 __ bind(loop); | |
1981 // int h = (i + j) >> 1; | |
1982 __ leal(h, Address(i, j, Address::times_1)); // h = i + j; | |
1983 __ sarl(h, 1); // h = (i + j) >> 1; | |
1984 // if (key < array[h].fast_match()) { | |
1985 // j = h; | |
1986 // } else { | |
1987 // i = h; | |
1988 // } | |
1989 // Convert array[h].match to native byte-ordering before compare | |
1990 __ movl(temp, Address(array, h, Address::times_8)); | |
1991 __ bswapl(temp); | |
1992 __ cmpl(key, temp); | |
1993 // j = h if (key < array[h].fast_match()) | |
1994 __ cmovl(Assembler::less, j, h); | |
1995 // i = h if (key >= array[h].fast_match()) | |
1996 __ cmovl(Assembler::greaterEqual, i, h); | |
1997 // while (i+1 < j) | |
1998 __ bind(entry); | |
1999 __ leal(h, Address(i, 1)); // i+1 | |
2000 __ cmpl(h, j); // i+1 < j | |
2001 __ jcc(Assembler::less, loop); | |
2002 } | |
2003 | |
2004 // end of binary search, result index is i (must check again!) | |
2005 Label default_case; | |
2006 // Convert array[i].match to native byte-ordering before compare | |
2007 __ movl(temp, Address(array, i, Address::times_8)); | |
2008 __ bswapl(temp); | |
2009 __ cmpl(key, temp); | |
2010 __ jcc(Assembler::notEqual, default_case); | |
2011 | |
2012 // entry found -> j = offset | |
2013 __ movl(j , Address(array, i, Address::times_8, BytesPerInt)); | |
2014 __ profile_switch_case(i, key, array); | |
2015 __ bswapl(j); | |
304 | 2016 __ movl2ptr(j, j); |
0 | 2017 __ load_unsigned_byte(rbx, Address(r13, j, Address::times_1)); |
304 | 2018 __ addptr(r13, j); |
0 | 2019 __ dispatch_only(vtos); |
2020 | |
2021 // default case -> j = default offset | |
2022 __ bind(default_case); | |
2023 __ profile_switch_default(i); | |
2024 __ movl(j, Address(array, -2 * BytesPerInt)); | |
2025 __ bswapl(j); | |
304 | 2026 __ movl2ptr(j, j); |
0 | 2027 __ load_unsigned_byte(rbx, Address(r13, j, Address::times_1)); |
304 | 2028 __ addptr(r13, j); |
0 | 2029 __ dispatch_only(vtos); |
2030 } | |
2031 | |
2032 | |
2033 void TemplateTable::_return(TosState state) { | |
2034 transition(state, state); | |
2035 assert(_desc->calls_vm(), | |
2036 "inconsistent calls_vm information"); // call in remove_activation | |
2037 | |
2038 if (_desc->bytecode() == Bytecodes::_return_register_finalizer) { | |
2039 assert(state == vtos, "only valid state"); | |
304 | 2040 __ movptr(c_rarg1, aaddress(0)); |
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2041 __ load_klass(rdi, c_rarg1); |
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2042 __ movl(rdi, Address(rdi, Klass::access_flags_offset())); |
0 | 2043 __ testl(rdi, JVM_ACC_HAS_FINALIZER); |
2044 Label skip_register_finalizer; | |
2045 __ jcc(Assembler::zero, skip_register_finalizer); | |
2046 | |
2047 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), c_rarg1); | |
2048 | |
2049 __ bind(skip_register_finalizer); | |
2050 } | |
2051 | |
2052 __ remove_activation(state, r13); | |
2053 __ jmp(r13); | |
2054 } | |
2055 | |
2056 // ---------------------------------------------------------------------------- | |
2057 // Volatile variables demand their effects be made known to all CPU's | |
2058 // in order. Store buffers on most chips allow reads & writes to | |
2059 // reorder; the JMM's ReadAfterWrite.java test fails in -Xint mode | |
2060 // without some kind of memory barrier (i.e., it's not sufficient that | |
2061 // the interpreter does not reorder volatile references, the hardware | |
2062 // also must not reorder them). | |
2063 // | |
2064 // According to the new Java Memory Model (JMM): | |
2065 // (1) All volatiles are serialized wrt to each other. ALSO reads & | |
2066 // writes act as aquire & release, so: | |
2067 // (2) A read cannot let unrelated NON-volatile memory refs that | |
2068 // happen after the read float up to before the read. It's OK for | |
2069 // non-volatile memory refs that happen before the volatile read to | |
2070 // float down below it. | |
2071 // (3) Similar a volatile write cannot let unrelated NON-volatile | |
2072 // memory refs that happen BEFORE the write float down to after the | |
2073 // write. It's OK for non-volatile memory refs that happen after the | |
2074 // volatile write to float up before it. | |
2075 // | |
2076 // We only put in barriers around volatile refs (they are expensive), | |
2077 // not _between_ memory refs (that would require us to track the | |
2078 // flavor of the previous memory refs). Requirements (2) and (3) | |
2079 // require some barriers before volatile stores and after volatile | |
2080 // loads. These nearly cover requirement (1) but miss the | |
2081 // volatile-store-volatile-load case. This final case is placed after | |
2082 // volatile-stores although it could just as well go before | |
2083 // volatile-loads. | |
2084 void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits | |
2085 order_constraint) { | |
2086 // Helper function to insert a is-volatile test and memory barrier | |
2087 if (os::is_MP()) { // Not needed on single CPU | |
2088 __ membar(order_constraint); | |
2089 } | |
2090 } | |
2091 | |
1565 | 2092 void TemplateTable::resolve_cache_and_index(int byte_no, |
2093 Register Rcache, | |
2094 Register index, | |
2095 size_t index_size) { | |
0 | 2096 const Register temp = rbx; |
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2097 assert_different_registers(Rcache, index, temp); |
1565 | 2098 |
0 | 2099 Label resolved; |
1565 | 2100 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range"); |
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2101 __ get_cache_and_index_and_bytecode_at_bcp(Rcache, index, temp, byte_no, 1, index_size); |
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2102 __ cmpl(temp, (int) bytecode()); // have we resolved this bytecode? |
1108 | 2103 __ jcc(Assembler::equal, resolved); |
0 | 2104 |
2105 // resolve first time through | |
2106 address entry; | |
2107 switch (bytecode()) { | |
2108 case Bytecodes::_getstatic: | |
2109 case Bytecodes::_putstatic: | |
2110 case Bytecodes::_getfield: | |
2111 case Bytecodes::_putfield: | |
2112 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put); | |
2113 break; | |
2114 case Bytecodes::_invokevirtual: | |
2115 case Bytecodes::_invokespecial: | |
2116 case Bytecodes::_invokestatic: | |
2117 case Bytecodes::_invokeinterface: | |
2118 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); | |
2119 break; | |
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2120 case Bytecodes::_invokehandle: |
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2121 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokehandle); |
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2122 break; |
1108 | 2123 case Bytecodes::_invokedynamic: |
2124 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic); | |
2125 break; | |
0 | 2126 default: |
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2127 fatal(err_msg("unexpected bytecode: %s", Bytecodes::name(bytecode()))); |
0 | 2128 break; |
2129 } | |
2130 __ movl(temp, (int) bytecode()); | |
2131 __ call_VM(noreg, entry, temp); | |
2132 | |
2133 // Update registers with resolved info | |
1565 | 2134 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size); |
0 | 2135 __ bind(resolved); |
2136 } | |
2137 | |
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2138 // The cache and index registers must be set before call |
0 | 2139 void TemplateTable::load_field_cp_cache_entry(Register obj, |
2140 Register cache, | |
2141 Register index, | |
2142 Register off, | |
2143 Register flags, | |
2144 bool is_static = false) { | |
2145 assert_different_registers(cache, index, flags, off); | |
2146 | |
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2147 ByteSize cp_base_offset = ConstantPoolCache::base_offset(); |
0 | 2148 // Field offset |
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2149 __ movptr(off, Address(cache, index, Address::times_ptr, |
304 | 2150 in_bytes(cp_base_offset + |
2151 ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2152 // Flags |
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2153 __ movl(flags, Address(cache, index, Address::times_ptr, |
0 | 2154 in_bytes(cp_base_offset + |
2155 ConstantPoolCacheEntry::flags_offset()))); | |
2156 | |
2157 // klass overwrite register | |
2158 if (is_static) { | |
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2159 __ movptr(obj, Address(cache, index, Address::times_ptr, |
304 | 2160 in_bytes(cp_base_offset + |
2161 ConstantPoolCacheEntry::f1_offset()))); | |
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2162 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
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2163 __ movptr(obj, Address(obj, mirror_offset)); |
0 | 2164 } |
2165 } | |
2166 | |
2167 void TemplateTable::load_invoke_cp_cache_entry(int byte_no, | |
2168 Register method, | |
2169 Register itable_index, | |
2170 Register flags, | |
2171 bool is_invokevirtual, | |
1565 | 2172 bool is_invokevfinal, /*unused*/ |
2173 bool is_invokedynamic) { | |
0 | 2174 // setup registers |
2175 const Register cache = rcx; | |
2176 const Register index = rdx; | |
2177 assert_different_registers(method, flags); | |
2178 assert_different_registers(method, cache, index); | |
2179 assert_different_registers(itable_index, flags); | |
2180 assert_different_registers(itable_index, cache, index); | |
2181 // determine constant pool cache field offsets | |
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2182 assert(is_invokevirtual == (byte_no == f2_byte), "is_invokevirtual flag redundant"); |
0 | 2183 const int method_offset = in_bytes( |
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2184 ConstantPoolCache::base_offset() + |
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2185 ((byte_no == f2_byte) |
0 | 2186 ? ConstantPoolCacheEntry::f2_offset() |
2187 : ConstantPoolCacheEntry::f1_offset())); | |
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2188 const int flags_offset = in_bytes(ConstantPoolCache::base_offset() + |
0 | 2189 ConstantPoolCacheEntry::flags_offset()); |
2190 // access constant pool cache fields | |
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2191 const int index_offset = in_bytes(ConstantPoolCache::base_offset() + |
0 | 2192 ConstantPoolCacheEntry::f2_offset()); |
2193 | |
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2194 size_t index_size = (is_invokedynamic ? sizeof(u4) : sizeof(u2)); |
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2195 resolve_cache_and_index(byte_no, cache, index, index_size); |
1565 | 2196 __ movptr(method, Address(cache, index, Address::times_ptr, method_offset)); |
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2197 |
0 | 2198 if (itable_index != noreg) { |
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2199 // pick up itable or appendix index from f2 also: |
1565 | 2200 __ movptr(itable_index, Address(cache, index, Address::times_ptr, index_offset)); |
0 | 2201 } |
1565 | 2202 __ movl(flags, Address(cache, index, Address::times_ptr, flags_offset)); |
0 | 2203 } |
2204 | |
2205 // Correct values of the cache and index registers are preserved. | |
2206 void TemplateTable::jvmti_post_field_access(Register cache, Register index, | |
2207 bool is_static, bool has_tos) { | |
2208 // do the JVMTI work here to avoid disturbing the register state below | |
2209 // We use c_rarg registers here because we want to use the register used in | |
2210 // the call to the VM | |
2211 if (JvmtiExport::can_post_field_access()) { | |
2212 // Check to see if a field access watch has been set before we | |
2213 // take the time to call into the VM. | |
2214 Label L1; | |
2215 assert_different_registers(cache, index, rax); | |
2216 __ mov32(rax, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2217 __ testl(rax, rax); | |
2218 __ jcc(Assembler::zero, L1); | |
2219 | |
2220 __ get_cache_and_index_at_bcp(c_rarg2, c_rarg3, 1); | |
2221 | |
2222 // cache entry pointer | |
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2223 __ addptr(c_rarg2, in_bytes(ConstantPoolCache::base_offset())); |
0 | 2224 __ shll(c_rarg3, LogBytesPerWord); |
304 | 2225 __ addptr(c_rarg2, c_rarg3); |
0 | 2226 if (is_static) { |
2227 __ xorl(c_rarg1, c_rarg1); // NULL object reference | |
2228 } else { | |
304 | 2229 __ movptr(c_rarg1, at_tos()); // get object pointer without popping it |
0 | 2230 __ verify_oop(c_rarg1); |
2231 } | |
2232 // c_rarg1: object pointer or NULL | |
2233 // c_rarg2: cache entry pointer | |
2234 // c_rarg3: jvalue object on the stack | |
2235 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
2236 InterpreterRuntime::post_field_access), | |
2237 c_rarg1, c_rarg2, c_rarg3); | |
2238 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2239 __ bind(L1); | |
2240 } | |
2241 } | |
2242 | |
2243 void TemplateTable::pop_and_check_object(Register r) { | |
2244 __ pop_ptr(r); | |
2245 __ null_check(r); // for field access must check obj. | |
2246 __ verify_oop(r); | |
2247 } | |
2248 | |
2249 void TemplateTable::getfield_or_static(int byte_no, bool is_static) { | |
2250 transition(vtos, vtos); | |
2251 | |
2252 const Register cache = rcx; | |
2253 const Register index = rdx; | |
2254 const Register obj = c_rarg3; | |
2255 const Register off = rbx; | |
2256 const Register flags = rax; | |
2257 const Register bc = c_rarg3; // uses same reg as obj, so don't mix them | |
2258 | |
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2259 resolve_cache_and_index(byte_no, cache, index, sizeof(u2)); |
0 | 2260 jvmti_post_field_access(cache, index, is_static, false); |
2261 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2262 | |
2263 if (!is_static) { | |
2264 // obj is on the stack | |
2265 pop_and_check_object(obj); | |
2266 } | |
2267 | |
2268 const Address field(obj, off, Address::times_1); | |
2269 | |
2270 Label Done, notByte, notInt, notShort, notChar, | |
2271 notLong, notFloat, notObj, notDouble; | |
2272 | |
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2273 __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift); |
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2274 // Make sure we don't need to mask edx after the above shift |
0 | 2275 assert(btos == 0, "change code, btos != 0"); |
2276 | |
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2277 __ andl(flags, ConstantPoolCacheEntry::tos_state_mask); |
0 | 2278 __ jcc(Assembler::notZero, notByte); |
2279 // btos | |
2280 __ load_signed_byte(rax, field); | |
2281 __ push(btos); | |
2282 // Rewrite bytecode to be faster | |
2283 if (!is_static) { | |
2284 patch_bytecode(Bytecodes::_fast_bgetfield, bc, rbx); | |
2285 } | |
2286 __ jmp(Done); | |
2287 | |
2288 __ bind(notByte); | |
2289 __ cmpl(flags, atos); | |
2290 __ jcc(Assembler::notEqual, notObj); | |
2291 // atos | |
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2292 __ load_heap_oop(rax, field); |
0 | 2293 __ push(atos); |
2294 if (!is_static) { | |
2295 patch_bytecode(Bytecodes::_fast_agetfield, bc, rbx); | |
2296 } | |
2297 __ jmp(Done); | |
2298 | |
2299 __ bind(notObj); | |
2300 __ cmpl(flags, itos); | |
2301 __ jcc(Assembler::notEqual, notInt); | |
2302 // itos | |
2303 __ movl(rax, field); | |
2304 __ push(itos); | |
2305 // Rewrite bytecode to be faster | |
2306 if (!is_static) { | |
2307 patch_bytecode(Bytecodes::_fast_igetfield, bc, rbx); | |
2308 } | |
2309 __ jmp(Done); | |
2310 | |
2311 __ bind(notInt); | |
2312 __ cmpl(flags, ctos); | |
2313 __ jcc(Assembler::notEqual, notChar); | |
2314 // ctos | |
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2315 __ load_unsigned_short(rax, field); |
0 | 2316 __ push(ctos); |
2317 // Rewrite bytecode to be faster | |
2318 if (!is_static) { | |
2319 patch_bytecode(Bytecodes::_fast_cgetfield, bc, rbx); | |
2320 } | |
2321 __ jmp(Done); | |
2322 | |
2323 __ bind(notChar); | |
2324 __ cmpl(flags, stos); | |
2325 __ jcc(Assembler::notEqual, notShort); | |
2326 // stos | |
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2327 __ load_signed_short(rax, field); |
0 | 2328 __ push(stos); |
2329 // Rewrite bytecode to be faster | |
2330 if (!is_static) { | |
2331 patch_bytecode(Bytecodes::_fast_sgetfield, bc, rbx); | |
2332 } | |
2333 __ jmp(Done); | |
2334 | |
2335 __ bind(notShort); | |
2336 __ cmpl(flags, ltos); | |
2337 __ jcc(Assembler::notEqual, notLong); | |
2338 // ltos | |
2339 __ movq(rax, field); | |
2340 __ push(ltos); | |
2341 // Rewrite bytecode to be faster | |
2342 if (!is_static) { | |
2343 patch_bytecode(Bytecodes::_fast_lgetfield, bc, rbx); | |
2344 } | |
2345 __ jmp(Done); | |
2346 | |
2347 __ bind(notLong); | |
2348 __ cmpl(flags, ftos); | |
2349 __ jcc(Assembler::notEqual, notFloat); | |
2350 // ftos | |
2351 __ movflt(xmm0, field); | |
2352 __ push(ftos); | |
2353 // Rewrite bytecode to be faster | |
2354 if (!is_static) { | |
2355 patch_bytecode(Bytecodes::_fast_fgetfield, bc, rbx); | |
2356 } | |
2357 __ jmp(Done); | |
2358 | |
2359 __ bind(notFloat); | |
2360 #ifdef ASSERT | |
2361 __ cmpl(flags, dtos); | |
2362 __ jcc(Assembler::notEqual, notDouble); | |
2363 #endif | |
2364 // dtos | |
2365 __ movdbl(xmm0, field); | |
2366 __ push(dtos); | |
2367 // Rewrite bytecode to be faster | |
2368 if (!is_static) { | |
2369 patch_bytecode(Bytecodes::_fast_dgetfield, bc, rbx); | |
2370 } | |
2371 #ifdef ASSERT | |
2372 __ jmp(Done); | |
2373 | |
2374 __ bind(notDouble); | |
2375 __ stop("Bad state"); | |
2376 #endif | |
2377 | |
2378 __ bind(Done); | |
2379 // [jk] not needed currently | |
2380 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadLoad | | |
2381 // Assembler::LoadStore)); | |
2382 } | |
2383 | |
2384 | |
2385 void TemplateTable::getfield(int byte_no) { | |
2386 getfield_or_static(byte_no, false); | |
2387 } | |
2388 | |
2389 void TemplateTable::getstatic(int byte_no) { | |
2390 getfield_or_static(byte_no, true); | |
2391 } | |
2392 | |
2393 // The registers cache and index expected to be set before call. | |
2394 // The function may destroy various registers, just not the cache and index registers. | |
2395 void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) { | |
2396 transition(vtos, vtos); | |
2397 | |
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2398 ByteSize cp_base_offset = ConstantPoolCache::base_offset(); |
0 | 2399 |
2400 if (JvmtiExport::can_post_field_modification()) { | |
2401 // Check to see if a field modification watch has been set before | |
2402 // we take the time to call into the VM. | |
2403 Label L1; | |
2404 assert_different_registers(cache, index, rax); | |
2405 __ mov32(rax, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
2406 __ testl(rax, rax); | |
2407 __ jcc(Assembler::zero, L1); | |
2408 | |
2409 __ get_cache_and_index_at_bcp(c_rarg2, rscratch1, 1); | |
2410 | |
2411 if (is_static) { | |
2412 // Life is simple. Null out the object pointer. | |
2413 __ xorl(c_rarg1, c_rarg1); | |
2414 } else { | |
2415 // Life is harder. The stack holds the value on top, followed by | |
2416 // the object. We don't know the size of the value, though; it | |
2417 // could be one or two words depending on its type. As a result, | |
2418 // we must find the type to determine where the object is. | |
2419 __ movl(c_rarg3, Address(c_rarg2, rscratch1, | |
2420 Address::times_8, | |
2421 in_bytes(cp_base_offset + | |
2422 ConstantPoolCacheEntry::flags_offset()))); | |
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2423 __ shrl(c_rarg3, ConstantPoolCacheEntry::tos_state_shift); |
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2424 // Make sure we don't need to mask rcx after the above shift |
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2425 ConstantPoolCacheEntry::verify_tos_state_shift(); |
304 | 2426 __ movptr(c_rarg1, at_tos_p1()); // initially assume a one word jvalue |
0 | 2427 __ cmpl(c_rarg3, ltos); |
304 | 2428 __ cmovptr(Assembler::equal, |
2429 c_rarg1, at_tos_p2()); // ltos (two word jvalue) | |
0 | 2430 __ cmpl(c_rarg3, dtos); |
304 | 2431 __ cmovptr(Assembler::equal, |
2432 c_rarg1, at_tos_p2()); // dtos (two word jvalue) | |
0 | 2433 } |
2434 // cache entry pointer | |
304 | 2435 __ addptr(c_rarg2, in_bytes(cp_base_offset)); |
0 | 2436 __ shll(rscratch1, LogBytesPerWord); |
304 | 2437 __ addptr(c_rarg2, rscratch1); |
0 | 2438 // object (tos) |
304 | 2439 __ mov(c_rarg3, rsp); |
0 | 2440 // c_rarg1: object pointer set up above (NULL if static) |
2441 // c_rarg2: cache entry pointer | |
2442 // c_rarg3: jvalue object on the stack | |
2443 __ call_VM(noreg, | |
2444 CAST_FROM_FN_PTR(address, | |
2445 InterpreterRuntime::post_field_modification), | |
2446 c_rarg1, c_rarg2, c_rarg3); | |
2447 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2448 __ bind(L1); | |
2449 } | |
2450 } | |
2451 | |
2452 void TemplateTable::putfield_or_static(int byte_no, bool is_static) { | |
2453 transition(vtos, vtos); | |
2454 | |
2455 const Register cache = rcx; | |
2456 const Register index = rdx; | |
2457 const Register obj = rcx; | |
2458 const Register off = rbx; | |
2459 const Register flags = rax; | |
2460 const Register bc = c_rarg3; | |
2461 | |
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2462 resolve_cache_and_index(byte_no, cache, index, sizeof(u2)); |
0 | 2463 jvmti_post_field_mod(cache, index, is_static); |
2464 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2465 | |
2466 // [jk] not needed currently | |
2467 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadStore | | |
2468 // Assembler::StoreStore)); | |
2469 | |
2470 Label notVolatile, Done; | |
2471 __ movl(rdx, flags); | |
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2472 __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift); |
0 | 2473 __ andl(rdx, 0x1); |
2474 | |
2475 // field address | |
2476 const Address field(obj, off, Address::times_1); | |
2477 | |
2478 Label notByte, notInt, notShort, notChar, | |
2479 notLong, notFloat, notObj, notDouble; | |
2480 | |
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2481 __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift); |
0 | 2482 |
2483 assert(btos == 0, "change code, btos != 0"); | |
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2484 __ andl(flags, ConstantPoolCacheEntry::tos_state_mask); |
0 | 2485 __ jcc(Assembler::notZero, notByte); |
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2486 |
0 | 2487 // btos |
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2488 { |
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2489 __ pop(btos); |
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2490 if (!is_static) pop_and_check_object(obj); |
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2491 __ movb(field, rax); |
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2492 if (!is_static) { |
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2493 patch_bytecode(Bytecodes::_fast_bputfield, bc, rbx, true, byte_no); |
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2494 } |
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2495 __ jmp(Done); |
0 | 2496 } |
2497 | |
2498 __ bind(notByte); | |
2499 __ cmpl(flags, atos); | |
2500 __ jcc(Assembler::notEqual, notObj); | |
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2501 |
0 | 2502 // atos |
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2503 { |
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2504 __ pop(atos); |
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2505 if (!is_static) pop_and_check_object(obj); |
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2506 // Store into the field |
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2507 do_oop_store(_masm, field, rax, _bs->kind(), false); |
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2508 if (!is_static) { |
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2509 patch_bytecode(Bytecodes::_fast_aputfield, bc, rbx, true, byte_no); |
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2510 } |
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2511 __ jmp(Done); |
0 | 2512 } |
2513 | |
2514 __ bind(notObj); | |
2515 __ cmpl(flags, itos); | |
2516 __ jcc(Assembler::notEqual, notInt); | |
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2517 |
0 | 2518 // itos |
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2519 { |
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2520 __ pop(itos); |
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2521 if (!is_static) pop_and_check_object(obj); |
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2522 __ movl(field, rax); |
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2523 if (!is_static) { |
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2524 patch_bytecode(Bytecodes::_fast_iputfield, bc, rbx, true, byte_no); |
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2525 } |
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2526 __ jmp(Done); |
0 | 2527 } |
2528 | |
2529 __ bind(notInt); | |
2530 __ cmpl(flags, ctos); | |
2531 __ jcc(Assembler::notEqual, notChar); | |
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2532 |
0 | 2533 // ctos |
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2534 { |
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2535 __ pop(ctos); |
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2536 if (!is_static) pop_and_check_object(obj); |
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2537 __ movw(field, rax); |
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2538 if (!is_static) { |
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2539 patch_bytecode(Bytecodes::_fast_cputfield, bc, rbx, true, byte_no); |
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2540 } |
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2541 __ jmp(Done); |
0 | 2542 } |
2543 | |
2544 __ bind(notChar); | |
2545 __ cmpl(flags, stos); | |
2546 __ jcc(Assembler::notEqual, notShort); | |
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2547 |
0 | 2548 // stos |
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2549 { |
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2550 __ pop(stos); |
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2551 if (!is_static) pop_and_check_object(obj); |
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2552 __ movw(field, rax); |
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2553 if (!is_static) { |
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2554 patch_bytecode(Bytecodes::_fast_sputfield, bc, rbx, true, byte_no); |
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2555 } |
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2556 __ jmp(Done); |
0 | 2557 } |
2558 | |
2559 __ bind(notShort); | |
2560 __ cmpl(flags, ltos); | |
2561 __ jcc(Assembler::notEqual, notLong); | |
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2562 |
0 | 2563 // ltos |
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2564 { |
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2565 __ pop(ltos); |
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2566 if (!is_static) pop_and_check_object(obj); |
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2567 __ movq(field, rax); |
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2568 if (!is_static) { |
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2569 patch_bytecode(Bytecodes::_fast_lputfield, bc, rbx, true, byte_no); |
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2570 } |
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2571 __ jmp(Done); |
0 | 2572 } |
2573 | |
2574 __ bind(notLong); | |
2575 __ cmpl(flags, ftos); | |
2576 __ jcc(Assembler::notEqual, notFloat); | |
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2577 |
0 | 2578 // ftos |
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2579 { |
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2580 __ pop(ftos); |
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2581 if (!is_static) pop_and_check_object(obj); |
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2582 __ movflt(field, xmm0); |
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2583 if (!is_static) { |
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2584 patch_bytecode(Bytecodes::_fast_fputfield, bc, rbx, true, byte_no); |
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2585 } |
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2586 __ jmp(Done); |
0 | 2587 } |
2588 | |
2589 __ bind(notFloat); | |
2590 #ifdef ASSERT | |
2591 __ cmpl(flags, dtos); | |
2592 __ jcc(Assembler::notEqual, notDouble); | |
2593 #endif | |
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2594 |
0 | 2595 // dtos |
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2596 { |
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2597 __ pop(dtos); |
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2598 if (!is_static) pop_and_check_object(obj); |
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2599 __ movdbl(field, xmm0); |
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2600 if (!is_static) { |
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2601 patch_bytecode(Bytecodes::_fast_dputfield, bc, rbx, true, byte_no); |
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2602 } |
0 | 2603 } |
2604 | |
2605 #ifdef ASSERT | |
2606 __ jmp(Done); | |
2607 | |
2608 __ bind(notDouble); | |
2609 __ stop("Bad state"); | |
2610 #endif | |
2611 | |
2612 __ bind(Done); | |
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2613 |
0 | 2614 // Check for volatile store |
2615 __ testl(rdx, rdx); | |
2616 __ jcc(Assembler::zero, notVolatile); | |
2617 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | | |
2618 Assembler::StoreStore)); | |
2619 __ bind(notVolatile); | |
2620 } | |
2621 | |
2622 void TemplateTable::putfield(int byte_no) { | |
2623 putfield_or_static(byte_no, false); | |
2624 } | |
2625 | |
2626 void TemplateTable::putstatic(int byte_no) { | |
2627 putfield_or_static(byte_no, true); | |
2628 } | |
2629 | |
2630 void TemplateTable::jvmti_post_fast_field_mod() { | |
2631 if (JvmtiExport::can_post_field_modification()) { | |
2632 // Check to see if a field modification watch has been set before | |
2633 // we take the time to call into the VM. | |
2634 Label L2; | |
2635 __ mov32(c_rarg3, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
2636 __ testl(c_rarg3, c_rarg3); | |
2637 __ jcc(Assembler::zero, L2); | |
2638 __ pop_ptr(rbx); // copy the object pointer from tos | |
2639 __ verify_oop(rbx); | |
2640 __ push_ptr(rbx); // put the object pointer back on tos | |
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2641 // Save tos values before call_VM() clobbers them. Since we have |
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2642 // to do it for every data type, we use the saved values as the |
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2643 // jvalue object. |
0 | 2644 switch (bytecode()) { // load values into the jvalue object |
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2645 case Bytecodes::_fast_aputfield: __ push_ptr(rax); break; |
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2646 case Bytecodes::_fast_bputfield: // fall through |
0 | 2647 case Bytecodes::_fast_sputfield: // fall through |
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2648 case Bytecodes::_fast_cputfield: // fall through |
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2649 case Bytecodes::_fast_iputfield: __ push_i(rax); break; |
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2650 case Bytecodes::_fast_dputfield: __ push_d(); break; |
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2651 case Bytecodes::_fast_fputfield: __ push_f(); break; |
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2652 case Bytecodes::_fast_lputfield: __ push_l(rax); break; |
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2653 |
0 | 2654 default: |
2655 ShouldNotReachHere(); | |
2656 } | |
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2657 __ mov(c_rarg3, rsp); // points to jvalue on the stack |
0 | 2658 // access constant pool cache entry |
2659 __ get_cache_entry_pointer_at_bcp(c_rarg2, rax, 1); | |
2660 __ verify_oop(rbx); | |
2661 // rbx: object pointer copied above | |
2662 // c_rarg2: cache entry pointer | |
2663 // c_rarg3: jvalue object on the stack | |
2664 __ call_VM(noreg, | |
2665 CAST_FROM_FN_PTR(address, | |
2666 InterpreterRuntime::post_field_modification), | |
2667 rbx, c_rarg2, c_rarg3); | |
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2668 |
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2669 switch (bytecode()) { // restore tos values |
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2670 case Bytecodes::_fast_aputfield: __ pop_ptr(rax); break; |
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2671 case Bytecodes::_fast_bputfield: // fall through |
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2672 case Bytecodes::_fast_sputfield: // fall through |
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2673 case Bytecodes::_fast_cputfield: // fall through |
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2674 case Bytecodes::_fast_iputfield: __ pop_i(rax); break; |
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2675 case Bytecodes::_fast_dputfield: __ pop_d(); break; |
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2676 case Bytecodes::_fast_fputfield: __ pop_f(); break; |
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2677 case Bytecodes::_fast_lputfield: __ pop_l(rax); break; |
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2678 } |
0 | 2679 __ bind(L2); |
2680 } | |
2681 } | |
2682 | |
2683 void TemplateTable::fast_storefield(TosState state) { | |
2684 transition(state, vtos); | |
2685 | |
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2686 ByteSize base = ConstantPoolCache::base_offset(); |
0 | 2687 |
2688 jvmti_post_fast_field_mod(); | |
2689 | |
2690 // access constant pool cache | |
2691 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2692 | |
2693 // test for volatile with rdx | |
2694 __ movl(rdx, Address(rcx, rbx, Address::times_8, | |
2695 in_bytes(base + | |
2696 ConstantPoolCacheEntry::flags_offset()))); | |
2697 | |
2698 // replace index with field offset from cache entry | |
304 | 2699 __ movptr(rbx, Address(rcx, rbx, Address::times_8, |
2700 in_bytes(base + ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2701 |
2702 // [jk] not needed currently | |
2703 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadStore | | |
2704 // Assembler::StoreStore)); | |
2705 | |
2706 Label notVolatile; | |
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2707 __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift); |
0 | 2708 __ andl(rdx, 0x1); |
2709 | |
2710 // Get object from stack | |
2711 pop_and_check_object(rcx); | |
2712 | |
2713 // field address | |
2714 const Address field(rcx, rbx, Address::times_1); | |
2715 | |
2716 // access field | |
2717 switch (bytecode()) { | |
2718 case Bytecodes::_fast_aputfield: | |
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2719 do_oop_store(_masm, field, rax, _bs->kind(), false); |
0 | 2720 break; |
2721 case Bytecodes::_fast_lputfield: | |
2722 __ movq(field, rax); | |
2723 break; | |
2724 case Bytecodes::_fast_iputfield: | |
2725 __ movl(field, rax); | |
2726 break; | |
2727 case Bytecodes::_fast_bputfield: | |
2728 __ movb(field, rax); | |
2729 break; | |
2730 case Bytecodes::_fast_sputfield: | |
2731 // fall through | |
2732 case Bytecodes::_fast_cputfield: | |
2733 __ movw(field, rax); | |
2734 break; | |
2735 case Bytecodes::_fast_fputfield: | |
2736 __ movflt(field, xmm0); | |
2737 break; | |
2738 case Bytecodes::_fast_dputfield: | |
2739 __ movdbl(field, xmm0); | |
2740 break; | |
2741 default: | |
2742 ShouldNotReachHere(); | |
2743 } | |
2744 | |
2745 // Check for volatile store | |
2746 __ testl(rdx, rdx); | |
2747 __ jcc(Assembler::zero, notVolatile); | |
2748 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | | |
2749 Assembler::StoreStore)); | |
2750 __ bind(notVolatile); | |
2751 } | |
2752 | |
2753 | |
2754 void TemplateTable::fast_accessfield(TosState state) { | |
2755 transition(atos, state); | |
2756 | |
2757 // Do the JVMTI work here to avoid disturbing the register state below | |
2758 if (JvmtiExport::can_post_field_access()) { | |
2759 // Check to see if a field access watch has been set before we | |
2760 // take the time to call into the VM. | |
2761 Label L1; | |
2762 __ mov32(rcx, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2763 __ testl(rcx, rcx); | |
2764 __ jcc(Assembler::zero, L1); | |
2765 // access constant pool cache entry | |
2766 __ get_cache_entry_pointer_at_bcp(c_rarg2, rcx, 1); | |
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2767 __ verify_oop(rax); |
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2768 __ push_ptr(rax); // save object pointer before call_VM() clobbers it |
304 | 2769 __ mov(c_rarg1, rax); |
0 | 2770 // c_rarg1: object pointer copied above |
2771 // c_rarg2: cache entry pointer | |
2772 __ call_VM(noreg, | |
2773 CAST_FROM_FN_PTR(address, | |
2774 InterpreterRuntime::post_field_access), | |
2775 c_rarg1, c_rarg2); | |
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2776 __ pop_ptr(rax); // restore object pointer |
0 | 2777 __ bind(L1); |
2778 } | |
2779 | |
2780 // access constant pool cache | |
2781 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2782 // replace index with field offset from cache entry | |
2783 // [jk] not needed currently | |
2784 // if (os::is_MP()) { | |
2785 // __ movl(rdx, Address(rcx, rbx, Address::times_8, | |
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2786 // in_bytes(ConstantPoolCache::base_offset() + |
0 | 2787 // ConstantPoolCacheEntry::flags_offset()))); |
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2788 // __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift); |
0 | 2789 // __ andl(rdx, 0x1); |
2790 // } | |
304 | 2791 __ movptr(rbx, Address(rcx, rbx, Address::times_8, |
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2792 in_bytes(ConstantPoolCache::base_offset() + |
304 | 2793 ConstantPoolCacheEntry::f2_offset()))); |
0 | 2794 |
2795 // rax: object | |
2796 __ verify_oop(rax); | |
2797 __ null_check(rax); | |
2798 Address field(rax, rbx, Address::times_1); | |
2799 | |
2800 // access field | |
2801 switch (bytecode()) { | |
2802 case Bytecodes::_fast_agetfield: | |
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2803 __ load_heap_oop(rax, field); |
0 | 2804 __ verify_oop(rax); |
2805 break; | |
2806 case Bytecodes::_fast_lgetfield: | |
2807 __ movq(rax, field); | |
2808 break; | |
2809 case Bytecodes::_fast_igetfield: | |
2810 __ movl(rax, field); | |
2811 break; | |
2812 case Bytecodes::_fast_bgetfield: | |
2813 __ movsbl(rax, field); | |
2814 break; | |
2815 case Bytecodes::_fast_sgetfield: | |
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2816 __ load_signed_short(rax, field); |
0 | 2817 break; |
2818 case Bytecodes::_fast_cgetfield: | |
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2819 __ load_unsigned_short(rax, field); |
0 | 2820 break; |
2821 case Bytecodes::_fast_fgetfield: | |
2822 __ movflt(xmm0, field); | |
2823 break; | |
2824 case Bytecodes::_fast_dgetfield: | |
2825 __ movdbl(xmm0, field); | |
2826 break; | |
2827 default: | |
2828 ShouldNotReachHere(); | |
2829 } | |
2830 // [jk] not needed currently | |
2831 // if (os::is_MP()) { | |
2832 // Label notVolatile; | |
2833 // __ testl(rdx, rdx); | |
2834 // __ jcc(Assembler::zero, notVolatile); | |
2835 // __ membar(Assembler::LoadLoad); | |
2836 // __ bind(notVolatile); | |
2837 //}; | |
2838 } | |
2839 | |
2840 void TemplateTable::fast_xaccess(TosState state) { | |
2841 transition(vtos, state); | |
2842 | |
2843 // get receiver | |
304 | 2844 __ movptr(rax, aaddress(0)); |
0 | 2845 // access constant pool cache |
2846 __ get_cache_and_index_at_bcp(rcx, rdx, 2); | |
304 | 2847 __ movptr(rbx, |
2848 Address(rcx, rdx, Address::times_8, | |
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2849 in_bytes(ConstantPoolCache::base_offset() + |
304 | 2850 ConstantPoolCacheEntry::f2_offset()))); |
0 | 2851 // make sure exception is reported in correct bcp range (getfield is |
2852 // next instruction) | |
304 | 2853 __ increment(r13); |
0 | 2854 __ null_check(rax); |
2855 switch (state) { | |
2856 case itos: | |
2857 __ movl(rax, Address(rax, rbx, Address::times_1)); | |
2858 break; | |
2859 case atos: | |
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2860 __ load_heap_oop(rax, Address(rax, rbx, Address::times_1)); |
0 | 2861 __ verify_oop(rax); |
2862 break; | |
2863 case ftos: | |
2864 __ movflt(xmm0, Address(rax, rbx, Address::times_1)); | |
2865 break; | |
2866 default: | |
2867 ShouldNotReachHere(); | |
2868 } | |
2869 | |
2870 // [jk] not needed currently | |
2871 // if (os::is_MP()) { | |
2872 // Label notVolatile; | |
2873 // __ movl(rdx, Address(rcx, rdx, Address::times_8, | |
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2874 // in_bytes(ConstantPoolCache::base_offset() + |
0 | 2875 // ConstantPoolCacheEntry::flags_offset()))); |
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2876 // __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift); |
0 | 2877 // __ testl(rdx, 0x1); |
2878 // __ jcc(Assembler::zero, notVolatile); | |
2879 // __ membar(Assembler::LoadLoad); | |
2880 // __ bind(notVolatile); | |
2881 // } | |
2882 | |
304 | 2883 __ decrement(r13); |
0 | 2884 } |
2885 | |
2886 | |
2887 | |
2888 //----------------------------------------------------------------------------- | |
2889 // Calls | |
2890 | |
2891 void TemplateTable::count_calls(Register method, Register temp) { | |
2892 // implemented elsewhere | |
2893 ShouldNotReachHere(); | |
2894 } | |
2895 | |
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2896 void TemplateTable::prepare_invoke(int byte_no, |
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2897 Register method, // linked method (or i-klass) |
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2898 Register index, // itable index, MethodType, etc. |
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2899 Register recv, // if caller wants to see it |
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2900 Register flags // if caller wants to test it |
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2901 ) { |
0 | 2902 // determine flags |
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2903 const Bytecodes::Code code = bytecode(); |
0 | 2904 const bool is_invokeinterface = code == Bytecodes::_invokeinterface; |
1108 | 2905 const bool is_invokedynamic = code == Bytecodes::_invokedynamic; |
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2906 const bool is_invokehandle = code == Bytecodes::_invokehandle; |
0 | 2907 const bool is_invokevirtual = code == Bytecodes::_invokevirtual; |
2908 const bool is_invokespecial = code == Bytecodes::_invokespecial; | |
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2909 const bool load_receiver = (recv != noreg); |
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2910 const bool save_flags = (flags != noreg); |
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2911 assert(load_receiver == (code != Bytecodes::_invokestatic && code != Bytecodes::_invokedynamic), ""); |
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2912 assert(save_flags == (is_invokeinterface || is_invokevirtual), "need flags for vfinal"); |
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2913 assert(flags == noreg || flags == rdx, ""); |
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2914 assert(recv == noreg || recv == rcx, ""); |
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2915 |
0 | 2916 // setup registers & access constant pool cache |
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2917 if (recv == noreg) recv = rcx; |
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2918 if (flags == noreg) flags = rdx; |
0 | 2919 assert_different_registers(method, index, recv, flags); |
2920 | |
2921 // save 'interpreter return address' | |
2922 __ save_bcp(); | |
2923 | |
1565 | 2924 load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual, false, is_invokedynamic); |
0 | 2925 |
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2926 // maybe push appendix to arguments (just before return address) |
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2927 if (is_invokedynamic || is_invokehandle) { |
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2928 Label L_no_push; |
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2929 __ testl(flags, (1 << ConstantPoolCacheEntry::has_appendix_shift)); |
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2930 __ jcc(Assembler::zero, L_no_push); |
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2931 // Push the appendix as a trailing parameter. |
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2932 // This must be done before we get the receiver, |
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2933 // since the parameter_size includes it. |
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2934 __ push(rbx); |
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2935 __ mov(rbx, index); |
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2936 assert(ConstantPoolCacheEntry::_indy_resolved_references_appendix_offset == 0, "appendix expected at index+0"); |
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2937 __ load_resolved_reference_at_index(index, rbx); |
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2938 __ pop(rbx); |
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2939 __ push(index); // push appendix (MethodType, CallSite, etc.) |
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2940 __ bind(L_no_push); |
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2941 } |
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2942 |
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2943 // load receiver if needed (after appendix is pushed so parameter size is correct) |
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2944 // Note: no return address pushed yet |
0 | 2945 if (load_receiver) { |
2946 __ movl(recv, flags); | |
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2947 __ andl(recv, ConstantPoolCacheEntry::parameter_size_mask); |
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2948 const int no_return_pc_pushed_yet = -1; // argument slot correction before we push return address |
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2949 const int receiver_is_at_end = -1; // back off one slot to get receiver |
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2950 Address recv_addr = __ argument_address(recv, no_return_pc_pushed_yet + receiver_is_at_end); |
1304 | 2951 __ movptr(recv, recv_addr); |
2952 __ verify_oop(recv); | |
0 | 2953 } |
2954 | |
2955 if (save_flags) { | |
2956 __ movl(r13, flags); | |
2957 } | |
2958 | |
2959 // compute return type | |
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2960 __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift); |
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2961 // Make sure we don't need to mask flags after the above shift |
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2962 ConstantPoolCacheEntry::verify_tos_state_shift(); |
0 | 2963 // load return address |
2964 { | |
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2965 const address table_addr = (is_invokeinterface || is_invokedynamic) ? |
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2966 (address)Interpreter::return_5_addrs_by_index_table() : |
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2967 (address)Interpreter::return_3_addrs_by_index_table(); |
1108 | 2968 ExternalAddress table(table_addr); |
2969 __ lea(rscratch1, table); | |
2970 __ movptr(flags, Address(rscratch1, flags, Address::times_ptr)); | |
0 | 2971 } |
2972 | |
2973 // push return address | |
304 | 2974 __ push(flags); |
0 | 2975 |
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2976 // Restore flags value from the constant pool cache, and restore rsi |
0 | 2977 // for later null checks. r13 is the bytecode pointer |
2978 if (save_flags) { | |
2979 __ movl(flags, r13); | |
2980 __ restore_bcp(); | |
2981 } | |
2982 } | |
2983 | |
2984 | |
2985 void TemplateTable::invokevirtual_helper(Register index, | |
2986 Register recv, | |
2987 Register flags) { | |
1783 | 2988 // Uses temporary registers rax, rdx |
2989 assert_different_registers(index, recv, rax, rdx); | |
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2990 assert(index == rbx, ""); |
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2991 assert(recv == rcx, ""); |
0 | 2992 |
2993 // Test for an invoke of a final method | |
2994 Label notFinal; | |
2995 __ movl(rax, flags); | |
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2996 __ andl(rax, (1 << ConstantPoolCacheEntry::is_vfinal_shift)); |
0 | 2997 __ jcc(Assembler::zero, notFinal); |
2998 | |
2999 const Register method = index; // method must be rbx | |
3000 assert(method == rbx, | |
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3001 "Method* must be rbx for interpreter calling convention"); |
0 | 3002 |
3003 // do the call - the index is actually the method to call | |
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3004 // that is, f2 is a vtable index if !is_vfinal, else f2 is a Method* |
0 | 3005 |
3006 // It's final, need a null check here! | |
3007 __ null_check(recv); | |
3008 | |
3009 // profile this call | |
3010 __ profile_final_call(rax); | |
3011 | |
3012 __ jump_from_interpreted(method, rax); | |
3013 | |
3014 __ bind(notFinal); | |
3015 | |
3016 // get receiver klass | |
3017 __ null_check(recv, oopDesc::klass_offset_in_bytes()); | |
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3018 __ load_klass(rax, recv); |
0 | 3019 |
3020 // profile this call | |
3021 __ profile_virtual_call(rax, r14, rdx); | |
3022 | |
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3023 // get target Method* & entry point |
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3024 __ lookup_virtual_method(rax, index, method); |
0 | 3025 __ jump_from_interpreted(method, rdx); |
3026 } | |
3027 | |
3028 | |
3029 void TemplateTable::invokevirtual(int byte_no) { | |
3030 transition(vtos, vtos); | |
1565 | 3031 assert(byte_no == f2_byte, "use this argument"); |
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3032 prepare_invoke(byte_no, |
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3033 rbx, // method or vtable index |
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|
3034 noreg, // unused itable index |
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|
3035 rcx, rdx); // recv, flags |
0 | 3036 |
3037 // rbx: index | |
3038 // rcx: receiver | |
3039 // rdx: flags | |
3040 | |
3041 invokevirtual_helper(rbx, rcx, rdx); | |
3042 } | |
3043 | |
3044 | |
3045 void TemplateTable::invokespecial(int byte_no) { | |
3046 transition(vtos, vtos); | |
1565 | 3047 assert(byte_no == f1_byte, "use this argument"); |
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3048 prepare_invoke(byte_no, rbx, noreg, // get f1 Method* |
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3049 rcx); // get receiver also for null check |
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|
3050 __ verify_oop(rcx); |
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|
3051 __ null_check(rcx); |
0 | 3052 // do the call |
3053 __ profile_call(rax); | |
3054 __ jump_from_interpreted(rbx, rax); | |
3055 } | |
3056 | |
3057 | |
3058 void TemplateTable::invokestatic(int byte_no) { | |
3059 transition(vtos, vtos); | |
1565 | 3060 assert(byte_no == f1_byte, "use this argument"); |
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3061 prepare_invoke(byte_no, rbx); // get f1 Method* |
0 | 3062 // do the call |
3063 __ profile_call(rax); | |
3064 __ jump_from_interpreted(rbx, rax); | |
3065 } | |
3066 | |
3067 void TemplateTable::fast_invokevfinal(int byte_no) { | |
3068 transition(vtos, vtos); | |
1565 | 3069 assert(byte_no == f2_byte, "use this argument"); |
0 | 3070 __ stop("fast_invokevfinal not used on amd64"); |
3071 } | |
3072 | |
3073 void TemplateTable::invokeinterface(int byte_no) { | |
3074 transition(vtos, vtos); | |
1565 | 3075 assert(byte_no == f1_byte, "use this argument"); |
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3076 prepare_invoke(byte_no, rax, rbx, // get f1 Klass*, f2 itable index |
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3077 rcx, rdx); // recv, flags |
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|
3078 |
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3079 // rax: interface klass (from f1) |
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3080 // rbx: itable index (from f2) |
0 | 3081 // rcx: receiver |
3082 // rdx: flags | |
3083 | |
3084 // Special case of invokeinterface called for virtual method of | |
3085 // java.lang.Object. See cpCacheOop.cpp for details. | |
3086 // This code isn't produced by javac, but could be produced by | |
3087 // another compliant java compiler. | |
3088 Label notMethod; | |
3089 __ movl(r14, rdx); | |
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|
3090 __ andl(r14, (1 << ConstantPoolCacheEntry::is_forced_virtual_shift)); |
0 | 3091 __ jcc(Assembler::zero, notMethod); |
3092 | |
3093 invokevirtual_helper(rbx, rcx, rdx); | |
3094 __ bind(notMethod); | |
3095 | |
3096 // Get receiver klass into rdx - also a null check | |
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3097 __ restore_locals(); // restore r14 |
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3098 __ null_check(rcx, oopDesc::klass_offset_in_bytes()); |
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|
3099 __ load_klass(rdx, rcx); |
0 | 3100 |
3101 // profile this call | |
3102 __ profile_virtual_call(rdx, r13, r14); | |
3103 | |
623
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3104 Label no_such_interface, no_such_method; |
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|
3105 |
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|
3106 __ lookup_interface_method(// inputs: rec. class, interface, itable index |
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|
3107 rdx, rax, rbx, |
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3108 // outputs: method, scan temp. reg |
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|
3109 rbx, r13, |
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|
3110 no_such_interface); |
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|
3111 |
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3112 // rbx: Method* to call |
623
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3113 // rcx: receiver |
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3114 // Check for abstract method error |
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|
3115 // Note: This should be done more efficiently via a throw_abstract_method_error |
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3116 // interpreter entry point and a conditional jump to it in case of a null |
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|
3117 // method. |
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|
3118 __ testptr(rbx, rbx); |
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|
3119 __ jcc(Assembler::zero, no_such_method); |
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|
3120 |
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|
3121 // do the call |
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3122 // rcx: receiver |
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3123 // rbx,: Method* |
623
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3124 __ jump_from_interpreted(rbx, rdx); |
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3125 __ should_not_reach_here(); |
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|
3126 |
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|
3127 // exception handling code follows... |
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|
3128 // note: must restore interpreter registers to canonical |
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3129 // state for exception handling to work correctly! |
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|
3130 |
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|
3131 __ bind(no_such_method); |
0 | 3132 // throw exception |
623
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3133 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
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3134 __ restore_bcp(); // r13 must be correct for exception handler (was destroyed) |
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3135 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
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|
3136 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError)); |
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|
3137 // the call_VM checks for exception, so we should never return here. |
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|
3138 __ should_not_reach_here(); |
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|
3139 |
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|
3140 __ bind(no_such_interface); |
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|
3141 // throw exception |
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|
3142 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
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|
3143 __ restore_bcp(); // r13 must be correct for exception handler (was destroyed) |
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|
3144 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
0 | 3145 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
3146 InterpreterRuntime::throw_IncompatibleClassChangeError)); | |
3147 // the call_VM checks for exception, so we should never return here. | |
3148 __ should_not_reach_here(); | |
3149 } | |
3150 | |
6266
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|
3151 |
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|
3152 void TemplateTable::invokehandle(int byte_no) { |
1d7922586cf6
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|
3153 transition(vtos, vtos); |
6725
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3154 assert(byte_no == f1_byte, "use this argument"); |
6822
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|
3155 const Register rbx_method = rbx; |
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|
3156 const Register rax_mtype = rax; |
6266
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|
3157 const Register rcx_recv = rcx; |
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|
3158 const Register rdx_flags = rdx; |
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|
3159 |
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|
3160 if (!EnableInvokeDynamic) { |
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|
3161 // rewriter does not generate this bytecode |
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|
3162 __ should_not_reach_here(); |
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|
3163 return; |
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|
3164 } |
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|
3165 |
6822
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|
3166 prepare_invoke(byte_no, rbx_method, rax_mtype, rcx_recv); |
6740
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7196681: NPG: Some JSR 292 tests crash in Windows exception handler
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6725
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|
3167 __ verify_method_ptr(rbx_method); |
6266
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|
3168 __ verify_oop(rcx_recv); |
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|
3169 __ null_check(rcx_recv); |
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|
3170 |
6822
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|
3171 // rax: MethodType object (from cpool->resolved_references[f1], if necessary) |
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3172 // rbx: MH.invokeExact_MT method (from f2) |
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|
3173 |
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|
3174 // Note: rax_mtype is already pushed (if necessary) by prepare_invoke |
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|
3175 |
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|
3176 // FIXME: profile the LambdaForm also |
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|
3177 __ profile_final_call(rax); |
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|
3178 |
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|
3179 __ jump_from_interpreted(rbx_method, rdx); |
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|
3180 } |
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|
3181 |
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|
3182 |
726
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|
3183 void TemplateTable::invokedynamic(int byte_no) { |
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|
3184 transition(vtos, vtos); |
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|
3185 assert(byte_no == f1_byte, "use this argument"); |
726
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|
3186 |
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|
3187 if (!EnableInvokeDynamic) { |
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|
3188 // We should not encounter this bytecode if !EnableInvokeDynamic. |
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|
3189 // The verifier will stop it. However, if we get past the verifier, |
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|
3190 // this will stop the thread in a reasonable way, without crashing the JVM. |
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|
3191 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
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|
3192 InterpreterRuntime::throw_IncompatibleClassChangeError)); |
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6655646: dynamic languages need dynamically linked call sites
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3193 // the call_VM checks for exception, so we should never return here. |
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|
3194 __ should_not_reach_here(); |
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3195 return; |
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|
3196 } |
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|
3197 |
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3198 const Register rbx_method = rbx; |
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3199 const Register rax_callsite = rax; |
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3200 |
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3201 prepare_invoke(byte_no, rbx_method, rax_callsite); |
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3202 |
6822
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3203 // rax: CallSite object (from cpool->resolved_references[f1]) |
6266
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3204 // rbx: MH.linkToCallSite method (from f2) |
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3205 |
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3206 // Note: rax_callsite is already pushed by prepare_invoke |
1846 | 3207 |
3279
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3208 // %%% should make a type profile for any invokedynamic that takes a ref argument |
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|
3209 // profile this call |
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|
3210 __ profile_call(r13); |
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|
3211 |
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|
3212 __ verify_oop(rax_callsite); |
6266
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|
3213 |
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3214 __ jump_from_interpreted(rbx_method, rdx); |
726
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|
3215 } |
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|
3216 |
623
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|
3217 |
0 | 3218 //----------------------------------------------------------------------------- |
3219 // Allocation | |
3220 | |
3221 void TemplateTable::_new() { | |
3222 transition(vtos, atos); | |
3223 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3224 Label slow_case; | |
3225 Label done; | |
3226 Label initialize_header; | |
3227 Label initialize_object; // including clearing the fields | |
3228 Label allocate_shared; | |
3229 | |
3230 __ get_cpool_and_tags(rsi, rax); | |
1681
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3231 // Make sure the class we're about to instantiate has been resolved. |
6725
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3232 // This is done before loading InstanceKlass to be consistent with the order |
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3233 // how Constant Pool is updated (see ConstantPool::klass_at_put) |
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3234 const int tags_offset = Array<u1>::base_offset_in_bytes(); |
0 | 3235 __ cmpb(Address(rax, rdx, Address::times_1, tags_offset), |
3236 JVM_CONSTANT_Class); | |
3237 __ jcc(Assembler::notEqual, slow_case); | |
3238 | |
6725
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3239 // get InstanceKlass |
1681
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3240 __ movptr(rsi, Address(rsi, rdx, |
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3241 Address::times_8, sizeof(ConstantPool))); |
1681
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3242 |
0 | 3243 // make sure klass is initialized & doesn't have finalizer |
3244 // make sure klass is fully initialized | |
4739
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3245 __ cmpb(Address(rsi, |
6725
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3246 InstanceKlass::init_state_offset()), |
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3247 InstanceKlass::fully_initialized); |
0 | 3248 __ jcc(Assembler::notEqual, slow_case); |
3249 | |
6725
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3250 // get instance_size in InstanceKlass (scaled to a count of bytes) |
0 | 3251 __ movl(rdx, |
3252 Address(rsi, | |
4762
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|
3253 Klass::layout_helper_offset())); |
0 | 3254 // test to see if it has a finalizer or is malformed in some way |
3255 __ testl(rdx, Klass::_lh_instance_slow_path_bit); | |
3256 __ jcc(Assembler::notZero, slow_case); | |
3257 | |
3258 // Allocate the instance | |
3259 // 1) Try to allocate in the TLAB | |
3260 // 2) if fail and the object is large allocate in the shared Eden | |
3261 // 3) if the above fails (or is not applicable), go to a slow case | |
3262 // (creates a new TLAB, etc.) | |
3263 | |
3264 const bool allow_shared_alloc = | |
3265 Universe::heap()->supports_inline_contig_alloc() && !CMSIncrementalMode; | |
3266 | |
3267 if (UseTLAB) { | |
304 | 3268 __ movptr(rax, Address(r15_thread, in_bytes(JavaThread::tlab_top_offset()))); |
3269 __ lea(rbx, Address(rax, rdx, Address::times_1)); | |
3270 __ cmpptr(rbx, Address(r15_thread, in_bytes(JavaThread::tlab_end_offset()))); | |
0 | 3271 __ jcc(Assembler::above, allow_shared_alloc ? allocate_shared : slow_case); |
304 | 3272 __ movptr(Address(r15_thread, in_bytes(JavaThread::tlab_top_offset())), rbx); |
0 | 3273 if (ZeroTLAB) { |
3274 // the fields have been already cleared | |
3275 __ jmp(initialize_header); | |
3276 } else { | |
3277 // initialize both the header and fields | |
3278 __ jmp(initialize_object); | |
3279 } | |
3280 } | |
3281 | |
3282 // Allocation in the shared Eden, if allowed. | |
3283 // | |
3284 // rdx: instance size in bytes | |
3285 if (allow_shared_alloc) { | |
3286 __ bind(allocate_shared); | |
3287 | |
342
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6711316: Open source the Garbage-First garbage collector
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|
3288 ExternalAddress top((address)Universe::heap()->top_addr()); |
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|
3289 ExternalAddress end((address)Universe::heap()->end_addr()); |
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3290 |
0 | 3291 const Register RtopAddr = rscratch1; |
3292 const Register RendAddr = rscratch2; | |
3293 | |
3294 __ lea(RtopAddr, top); | |
3295 __ lea(RendAddr, end); | |
304 | 3296 __ movptr(rax, Address(RtopAddr, 0)); |
0 | 3297 |
3298 // For retries rax gets set by cmpxchgq | |
3299 Label retry; | |
3300 __ bind(retry); | |
304 | 3301 __ lea(rbx, Address(rax, rdx, Address::times_1)); |
3302 __ cmpptr(rbx, Address(RendAddr, 0)); | |
0 | 3303 __ jcc(Assembler::above, slow_case); |
3304 | |
3305 // Compare rax with the top addr, and if still equal, store the new | |
3306 // top addr in rbx at the address of the top addr pointer. Sets ZF if was | |
3307 // equal, and clears it otherwise. Use lock prefix for atomicity on MPs. | |
3308 // | |
3309 // rax: object begin | |
3310 // rbx: object end | |
3311 // rdx: instance size in bytes | |
3312 if (os::is_MP()) { | |
3313 __ lock(); | |
3314 } | |
304 | 3315 __ cmpxchgptr(rbx, Address(RtopAddr, 0)); |
0 | 3316 |
3317 // if someone beat us on the allocation, try again, otherwise continue | |
3318 __ jcc(Assembler::notEqual, retry); | |
2100
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
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diff
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|
3319 |
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|
3320 __ incr_allocated_bytes(r15_thread, rdx, 0); |
0 | 3321 } |
3322 | |
3323 if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) { | |
3324 // The object is initialized before the header. If the object size is | |
3325 // zero, go directly to the header initialization. | |
3326 __ bind(initialize_object); | |
3327 __ decrementl(rdx, sizeof(oopDesc)); | |
3328 __ jcc(Assembler::zero, initialize_header); | |
3329 | |
3330 // Initialize object fields | |
3331 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) | |
3332 __ shrl(rdx, LogBytesPerLong); // divide by oopSize to simplify the loop | |
3333 { | |
3334 Label loop; | |
3335 __ bind(loop); | |
3336 __ movq(Address(rax, rdx, Address::times_8, | |
3337 sizeof(oopDesc) - oopSize), | |
3338 rcx); | |
3339 __ decrementl(rdx); | |
3340 __ jcc(Assembler::notZero, loop); | |
3341 } | |
3342 | |
3343 // initialize object header only. | |
3344 __ bind(initialize_header); | |
3345 if (UseBiasedLocking) { | |
4762
069ab3f976d3
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stefank
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3852
diff
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|
3346 __ movptr(rscratch1, Address(rsi, Klass::prototype_header_offset())); |
304 | 3347 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes()), rscratch1); |
0 | 3348 } else { |
3349 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes()), | |
3350 (intptr_t) markOopDesc::prototype()); // header (address 0x1) | |
3351 } | |
167
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3352 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) |
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3353 __ store_klass_gap(rax, rcx); // zero klass gap for compressed oops |
feeb96a45707
6696264: assert("narrow oop can never be zero") for GCBasher & ParNewGC
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|
3354 __ store_klass(rax, rsi); // store klass last |
1248
455df1b81409
6587322: dtrace probe object__alloc doesn't fire in some situations on amd64
kamg
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1108
diff
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|
3355 |
455df1b81409
6587322: dtrace probe object__alloc doesn't fire in some situations on amd64
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|
3356 { |
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6587322: dtrace probe object__alloc doesn't fire in some situations on amd64
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diff
changeset
|
3357 SkipIfEqual skip(_masm, &DTraceAllocProbes, false); |
455df1b81409
6587322: dtrace probe object__alloc doesn't fire in some situations on amd64
kamg
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1108
diff
changeset
|
3358 // Trigger dtrace event for fastpath |
455df1b81409
6587322: dtrace probe object__alloc doesn't fire in some situations on amd64
kamg
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diff
changeset
|
3359 __ push(atos); // save the return value |
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6587322: dtrace probe object__alloc doesn't fire in some situations on amd64
kamg
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diff
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|
3360 __ call_VM_leaf( |
455df1b81409
6587322: dtrace probe object__alloc doesn't fire in some situations on amd64
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|
3361 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), rax); |
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6587322: dtrace probe object__alloc doesn't fire in some situations on amd64
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|
3362 __ pop(atos); // restore the return value |
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|
3363 |
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|
3364 } |
0 | 3365 __ jmp(done); |
3366 } | |
3367 | |
3368 | |
3369 // slow case | |
3370 __ bind(slow_case); | |
3371 __ get_constant_pool(c_rarg1); | |
3372 __ get_unsigned_2_byte_index_at_bcp(c_rarg2, 1); | |
3373 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), c_rarg1, c_rarg2); | |
3374 __ verify_oop(rax); | |
3375 | |
3376 // continue | |
3377 __ bind(done); | |
3378 } | |
3379 | |
3380 void TemplateTable::newarray() { | |
3381 transition(itos, atos); | |
3382 __ load_unsigned_byte(c_rarg1, at_bcp(1)); | |
3383 __ movl(c_rarg2, rax); | |
3384 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray), | |
3385 c_rarg1, c_rarg2); | |
3386 } | |
3387 | |
3388 void TemplateTable::anewarray() { | |
3389 transition(itos, atos); | |
3390 __ get_unsigned_2_byte_index_at_bcp(c_rarg2, 1); | |
3391 __ get_constant_pool(c_rarg1); | |
3392 __ movl(c_rarg3, rax); | |
3393 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray), | |
3394 c_rarg1, c_rarg2, c_rarg3); | |
3395 } | |
3396 | |
3397 void TemplateTable::arraylength() { | |
3398 transition(atos, itos); | |
3399 __ null_check(rax, arrayOopDesc::length_offset_in_bytes()); | |
3400 __ movl(rax, Address(rax, arrayOopDesc::length_offset_in_bytes())); | |
3401 } | |
3402 | |
3403 void TemplateTable::checkcast() { | |
3404 transition(atos, atos); | |
3405 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3406 __ testptr(rax, rax); // object is in rax |
0 | 3407 __ jcc(Assembler::zero, is_null); |
3408 | |
3409 // Get cpool & tags index | |
3410 __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array | |
3411 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index | |
3412 // See if bytecode has already been quicked | |
3413 __ cmpb(Address(rdx, rbx, | |
3414 Address::times_1, | |
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3415 Array<u1>::base_offset_in_bytes()), |
0 | 3416 JVM_CONSTANT_Class); |
3417 __ jcc(Assembler::equal, quicked); | |
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|
3418 __ push(atos); // save receiver for result, and for GC |
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|
3419 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc)); |
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3420 // vm_result_2 has metadata result |
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|
3421 __ get_vm_result_2(rax, r15_thread); |
0 | 3422 __ pop_ptr(rdx); // restore receiver |
3423 __ jmpb(resolved); | |
3424 | |
3425 // Get superklass in rax and subklass in rbx | |
3426 __ bind(quicked); | |
304 | 3427 __ mov(rdx, rax); // Save object in rdx; rax needed for subtype check |
3428 __ movptr(rax, Address(rcx, rbx, | |
6725
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3429 Address::times_8, sizeof(ConstantPool))); |
0 | 3430 |
3431 __ bind(resolved); | |
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3432 __ load_klass(rbx, rdx); |
0 | 3433 |
3434 // Generate subtype check. Blows rcx, rdi. Object in rdx. | |
3435 // Superklass in rax. Subklass in rbx. | |
3436 __ gen_subtype_check(rbx, ok_is_subtype); | |
3437 | |
3438 // Come here on failure | |
3439 __ push_ptr(rdx); | |
3440 // object is at TOS | |
3441 __ jump(ExternalAddress(Interpreter::_throw_ClassCastException_entry)); | |
3442 | |
3443 // Come here on success | |
3444 __ bind(ok_is_subtype); | |
304 | 3445 __ mov(rax, rdx); // Restore object in rdx |
0 | 3446 |
3447 // Collect counts on whether this check-cast sees NULLs a lot or not. | |
3448 if (ProfileInterpreter) { | |
3449 __ jmp(done); | |
3450 __ bind(is_null); | |
3451 __ profile_null_seen(rcx); | |
3452 } else { | |
3453 __ bind(is_null); // same as 'done' | |
3454 } | |
3455 __ bind(done); | |
3456 } | |
3457 | |
3458 void TemplateTable::instanceof() { | |
3459 transition(atos, itos); | |
3460 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3461 __ testptr(rax, rax); |
0 | 3462 __ jcc(Assembler::zero, is_null); |
3463 | |
3464 // Get cpool & tags index | |
3465 __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array | |
3466 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index | |
3467 // See if bytecode has already been quicked | |
3468 __ cmpb(Address(rdx, rbx, | |
3469 Address::times_1, | |
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|
3470 Array<u1>::base_offset_in_bytes()), |
0 | 3471 JVM_CONSTANT_Class); |
3472 __ jcc(Assembler::equal, quicked); | |
3473 | |
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3474 __ push(atos); // save receiver for result, and for GC |
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3475 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc)); |
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3476 // vm_result_2 has metadata result |
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3477 __ get_vm_result_2(rax, r15_thread); |
0 | 3478 __ pop_ptr(rdx); // restore receiver |
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6780143: hs203t003 hits SIGSEGV/EXCEPTION_ACCESS_VIOLATION with -XX:+UseCompressedOops
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3479 __ verify_oop(rdx); |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
3480 __ load_klass(rdx, rdx); |
0 | 3481 __ jmpb(resolved); |
3482 | |
3483 // Get superklass in rax and subklass in rdx | |
3484 __ bind(quicked); | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
3485 __ load_klass(rdx, rax); |
304 | 3486 __ movptr(rax, Address(rcx, rbx, |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3487 Address::times_8, sizeof(ConstantPool))); |
0 | 3488 |
3489 __ bind(resolved); | |
3490 | |
3491 // Generate subtype check. Blows rcx, rdi | |
3492 // Superklass in rax. Subklass in rdx. | |
3493 __ gen_subtype_check(rdx, ok_is_subtype); | |
3494 | |
3495 // Come here on failure | |
3496 __ xorl(rax, rax); | |
3497 __ jmpb(done); | |
3498 // Come here on success | |
3499 __ bind(ok_is_subtype); | |
3500 __ movl(rax, 1); | |
3501 | |
3502 // Collect counts on whether this test sees NULLs a lot or not. | |
3503 if (ProfileInterpreter) { | |
3504 __ jmp(done); | |
3505 __ bind(is_null); | |
3506 __ profile_null_seen(rcx); | |
3507 } else { | |
3508 __ bind(is_null); // same as 'done' | |
3509 } | |
3510 __ bind(done); | |
3511 // rax = 0: obj == NULL or obj is not an instanceof the specified klass | |
3512 // rax = 1: obj != NULL and obj is an instanceof the specified klass | |
3513 } | |
3514 | |
3515 //----------------------------------------------------------------------------- | |
3516 // Breakpoints | |
3517 void TemplateTable::_breakpoint() { | |
3518 // Note: We get here even if we are single stepping.. | |
3519 // jbug inists on setting breakpoints at every bytecode | |
3520 // even if we are in single step mode. | |
3521 | |
3522 transition(vtos, vtos); | |
3523 | |
3524 // get the unpatched byte code | |
3525 __ get_method(c_rarg1); | |
3526 __ call_VM(noreg, | |
3527 CAST_FROM_FN_PTR(address, | |
3528 InterpreterRuntime::get_original_bytecode_at), | |
3529 c_rarg1, r13); | |
304 | 3530 __ mov(rbx, rax); |
0 | 3531 |
3532 // post the breakpoint event | |
3533 __ get_method(c_rarg1); | |
3534 __ call_VM(noreg, | |
3535 CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint), | |
3536 c_rarg1, r13); | |
3537 | |
3538 // complete the execution of original bytecode | |
3539 __ dispatch_only_normal(vtos); | |
3540 } | |
3541 | |
3542 //----------------------------------------------------------------------------- | |
3543 // Exceptions | |
3544 | |
3545 void TemplateTable::athrow() { | |
3546 transition(atos, vtos); | |
3547 __ null_check(rax); | |
3548 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
3549 } | |
3550 | |
3551 //----------------------------------------------------------------------------- | |
3552 // Synchronization | |
3553 // | |
3554 // Note: monitorenter & exit are symmetric routines; which is reflected | |
3555 // in the assembly code structure as well | |
3556 // | |
3557 // Stack layout: | |
3558 // | |
3559 // [expressions ] <--- rsp = expression stack top | |
3560 // .. | |
3561 // [expressions ] | |
3562 // [monitor entry] <--- monitor block top = expression stack bot | |
3563 // .. | |
3564 // [monitor entry] | |
3565 // [frame data ] <--- monitor block bot | |
3566 // ... | |
3567 // [saved rbp ] <--- rbp | |
3568 void TemplateTable::monitorenter() { | |
3569 transition(atos, vtos); | |
3570 | |
3571 // check for NULL object | |
3572 __ null_check(rax); | |
3573 | |
3574 const Address monitor_block_top( | |
3575 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3576 const Address monitor_block_bot( | |
3577 rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3578 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
3579 | |
3580 Label allocated; | |
3581 | |
3582 // initialize entry pointer | |
3583 __ xorl(c_rarg1, c_rarg1); // points to free slot or NULL | |
3584 | |
3585 // find a free slot in the monitor block (result in c_rarg1) | |
3586 { | |
3587 Label entry, loop, exit; | |
304 | 3588 __ movptr(c_rarg3, monitor_block_top); // points to current entry, |
0 | 3589 // starting with top-most entry |
304 | 3590 __ lea(c_rarg2, monitor_block_bot); // points to word before bottom |
0 | 3591 // of monitor block |
3592 __ jmpb(entry); | |
3593 | |
3594 __ bind(loop); | |
3595 // check if current entry is used | |
304 | 3596 __ cmpptr(Address(c_rarg3, BasicObjectLock::obj_offset_in_bytes()), (int32_t) NULL_WORD); |
0 | 3597 // if not used then remember entry in c_rarg1 |
304 | 3598 __ cmov(Assembler::equal, c_rarg1, c_rarg3); |
0 | 3599 // check if current entry is for same object |
304 | 3600 __ cmpptr(rax, Address(c_rarg3, BasicObjectLock::obj_offset_in_bytes())); |
0 | 3601 // if same object then stop searching |
3602 __ jccb(Assembler::equal, exit); | |
3603 // otherwise advance to next entry | |
304 | 3604 __ addptr(c_rarg3, entry_size); |
0 | 3605 __ bind(entry); |
3606 // check if bottom reached | |
304 | 3607 __ cmpptr(c_rarg3, c_rarg2); |
0 | 3608 // if not at bottom then check this entry |
3609 __ jcc(Assembler::notEqual, loop); | |
3610 __ bind(exit); | |
3611 } | |
3612 | |
304 | 3613 __ testptr(c_rarg1, c_rarg1); // check if a slot has been found |
0 | 3614 __ jcc(Assembler::notZero, allocated); // if found, continue with that one |
3615 | |
3616 // allocate one if there's no free slot | |
3617 { | |
3618 Label entry, loop; | |
304 | 3619 // 1. compute new pointers // rsp: old expression stack top |
3620 __ movptr(c_rarg1, monitor_block_bot); // c_rarg1: old expression stack bottom | |
3621 __ subptr(rsp, entry_size); // move expression stack top | |
3622 __ subptr(c_rarg1, entry_size); // move expression stack bottom | |
3623 __ mov(c_rarg3, rsp); // set start value for copy loop | |
3624 __ movptr(monitor_block_bot, c_rarg1); // set new monitor block bottom | |
0 | 3625 __ jmp(entry); |
3626 // 2. move expression stack contents | |
3627 __ bind(loop); | |
304 | 3628 __ movptr(c_rarg2, Address(c_rarg3, entry_size)); // load expression stack |
3629 // word from old location | |
3630 __ movptr(Address(c_rarg3, 0), c_rarg2); // and store it at new location | |
3631 __ addptr(c_rarg3, wordSize); // advance to next word | |
0 | 3632 __ bind(entry); |
304 | 3633 __ cmpptr(c_rarg3, c_rarg1); // check if bottom reached |
0 | 3634 __ jcc(Assembler::notEqual, loop); // if not at bottom then |
3635 // copy next word | |
3636 } | |
3637 | |
3638 // call run-time routine | |
3639 // c_rarg1: points to monitor entry | |
3640 __ bind(allocated); | |
3641 | |
3642 // Increment bcp to point to the next bytecode, so exception | |
3643 // handling for async. exceptions work correctly. | |
3644 // The object has already been poped from the stack, so the | |
3645 // expression stack looks correct. | |
304 | 3646 __ increment(r13); |
0 | 3647 |
3648 // store object | |
304 | 3649 __ movptr(Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes()), rax); |
0 | 3650 __ lock_object(c_rarg1); |
3651 | |
3652 // check to make sure this monitor doesn't cause stack overflow after locking | |
3653 __ save_bcp(); // in case of exception | |
3654 __ generate_stack_overflow_check(0); | |
3655 | |
3656 // The bcp has already been incremented. Just need to dispatch to | |
3657 // next instruction. | |
3658 __ dispatch_next(vtos); | |
3659 } | |
3660 | |
3661 | |
3662 void TemplateTable::monitorexit() { | |
3663 transition(atos, vtos); | |
3664 | |
3665 // check for NULL object | |
3666 __ null_check(rax); | |
3667 | |
3668 const Address monitor_block_top( | |
3669 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3670 const Address monitor_block_bot( | |
3671 rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3672 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
3673 | |
3674 Label found; | |
3675 | |
3676 // find matching slot | |
3677 { | |
3678 Label entry, loop; | |
304 | 3679 __ movptr(c_rarg1, monitor_block_top); // points to current entry, |
0 | 3680 // starting with top-most entry |
304 | 3681 __ lea(c_rarg2, monitor_block_bot); // points to word before bottom |
0 | 3682 // of monitor block |
3683 __ jmpb(entry); | |
3684 | |
3685 __ bind(loop); | |
3686 // check if current entry is for same object | |
304 | 3687 __ cmpptr(rax, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
0 | 3688 // if same object then stop searching |
3689 __ jcc(Assembler::equal, found); | |
3690 // otherwise advance to next entry | |
304 | 3691 __ addptr(c_rarg1, entry_size); |
0 | 3692 __ bind(entry); |
3693 // check if bottom reached | |
304 | 3694 __ cmpptr(c_rarg1, c_rarg2); |
0 | 3695 // if not at bottom then check this entry |
3696 __ jcc(Assembler::notEqual, loop); | |
3697 } | |
3698 | |
3699 // error handling. Unlocking was not block-structured | |
3700 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
3701 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
3702 __ should_not_reach_here(); | |
3703 | |
3704 // call run-time routine | |
3705 // rsi: points to monitor entry | |
3706 __ bind(found); | |
3707 __ push_ptr(rax); // make sure object is on stack (contract with oopMaps) | |
3708 __ unlock_object(c_rarg1); | |
3709 __ pop_ptr(rax); // discard object | |
3710 } | |
3711 | |
3712 | |
3713 // Wide instructions | |
3714 void TemplateTable::wide() { | |
3715 transition(vtos, vtos); | |
3716 __ load_unsigned_byte(rbx, at_bcp(1)); | |
3717 __ lea(rscratch1, ExternalAddress((address)Interpreter::_wentry_point)); | |
3718 __ jmp(Address(rscratch1, rbx, Address::times_8)); | |
3719 // Note: the r13 increment step is part of the individual wide | |
3720 // bytecode implementations | |
3721 } | |
3722 | |
3723 | |
3724 // Multi arrays | |
3725 void TemplateTable::multianewarray() { | |
3726 transition(vtos, atos); | |
3727 __ load_unsigned_byte(rax, at_bcp(3)); // get number of dimensions | |
3728 // last dim is on top of stack; we want address of first one: | |
3729 // first_addr = last_addr + (ndims - 1) * wordSize | |
304 | 3730 __ lea(c_rarg1, Address(rsp, rax, Address::times_8, -wordSize)); |
0 | 3731 call_VM(rax, |
3732 CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), | |
3733 c_rarg1); | |
3734 __ load_unsigned_byte(rbx, at_bcp(3)); | |
304 | 3735 __ lea(rsp, Address(rsp, rbx, Address::times_8)); |
0 | 3736 } |
304 | 3737 #endif // !CC_INTERP |