Mercurial > hg > graal-compiler
annotate src/cpu/x86/vm/templateTable_x86_32.cpp @ 6033:4e6554041847
Added tag hs24-b09 for changeset 7d5ec8bf38d1
author | amurillo |
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date | Fri, 04 May 2012 14:10:31 -0700 |
parents | 19e197e2a1af |
children | 1d7922586cf6 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
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26 #include "asm/assembler.hpp" |
1972 | 27 #include "interpreter/interpreter.hpp" |
28 #include "interpreter/interpreterRuntime.hpp" | |
29 #include "interpreter/templateTable.hpp" | |
30 #include "memory/universe.inline.hpp" | |
31 #include "oops/methodDataOop.hpp" | |
32 #include "oops/objArrayKlass.hpp" | |
33 #include "oops/oop.inline.hpp" | |
34 #include "prims/methodHandles.hpp" | |
35 #include "runtime/sharedRuntime.hpp" | |
36 #include "runtime/stubRoutines.hpp" | |
37 #include "runtime/synchronizer.hpp" | |
0 | 38 |
39 #ifndef CC_INTERP | |
40 #define __ _masm-> | |
41 | |
42 //---------------------------------------------------------------------------------------------------- | |
43 // Platform-dependent initialization | |
44 | |
45 void TemplateTable::pd_initialize() { | |
46 // No i486 specific initialization | |
47 } | |
48 | |
49 //---------------------------------------------------------------------------------------------------- | |
50 // Address computation | |
51 | |
52 // local variables | |
53 static inline Address iaddress(int n) { | |
54 return Address(rdi, Interpreter::local_offset_in_bytes(n)); | |
55 } | |
56 | |
57 static inline Address laddress(int n) { return iaddress(n + 1); } | |
58 static inline Address haddress(int n) { return iaddress(n + 0); } | |
59 static inline Address faddress(int n) { return iaddress(n); } | |
60 static inline Address daddress(int n) { return laddress(n); } | |
61 static inline Address aaddress(int n) { return iaddress(n); } | |
62 | |
63 static inline Address iaddress(Register r) { | |
1506 | 64 return Address(rdi, r, Interpreter::stackElementScale()); |
0 | 65 } |
66 static inline Address laddress(Register r) { | |
67 return Address(rdi, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(1)); | |
68 } | |
69 static inline Address haddress(Register r) { | |
70 return Address(rdi, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(0)); | |
71 } | |
72 | |
1506 | 73 static inline Address faddress(Register r) { return iaddress(r); } |
74 static inline Address daddress(Register r) { return laddress(r); } | |
75 static inline Address aaddress(Register r) { return iaddress(r); } | |
0 | 76 |
77 // expression stack | |
78 // (Note: Must not use symmetric equivalents at_rsp_m1/2 since they store | |
79 // data beyond the rsp which is potentially unsafe in an MT environment; | |
80 // an interrupt may overwrite that data.) | |
81 static inline Address at_rsp () { | |
82 return Address(rsp, 0); | |
83 } | |
84 | |
85 // At top of Java expression stack which may be different than rsp(). It | |
86 // isn't for category 1 objects. | |
87 static inline Address at_tos () { | |
88 Address tos = Address(rsp, Interpreter::expr_offset_in_bytes(0)); | |
89 return tos; | |
90 } | |
91 | |
92 static inline Address at_tos_p1() { | |
93 return Address(rsp, Interpreter::expr_offset_in_bytes(1)); | |
94 } | |
95 | |
96 static inline Address at_tos_p2() { | |
97 return Address(rsp, Interpreter::expr_offset_in_bytes(2)); | |
98 } | |
99 | |
100 // Condition conversion | |
101 static Assembler::Condition j_not(TemplateTable::Condition cc) { | |
102 switch (cc) { | |
103 case TemplateTable::equal : return Assembler::notEqual; | |
104 case TemplateTable::not_equal : return Assembler::equal; | |
105 case TemplateTable::less : return Assembler::greaterEqual; | |
106 case TemplateTable::less_equal : return Assembler::greater; | |
107 case TemplateTable::greater : return Assembler::lessEqual; | |
108 case TemplateTable::greater_equal: return Assembler::less; | |
109 } | |
110 ShouldNotReachHere(); | |
111 return Assembler::zero; | |
112 } | |
113 | |
114 | |
115 //---------------------------------------------------------------------------------------------------- | |
116 // Miscelaneous helper routines | |
117 | |
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118 // Store an oop (or NULL) at the address described by obj. |
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119 // If val == noreg this means store a NULL |
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120 |
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121 static void do_oop_store(InterpreterMacroAssembler* _masm, |
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122 Address obj, |
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123 Register val, |
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124 BarrierSet::Name barrier, |
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125 bool precise) { |
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126 assert(val == noreg || val == rax, "parameter is just for looks"); |
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127 switch (barrier) { |
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128 #ifndef SERIALGC |
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129 case BarrierSet::G1SATBCT: |
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130 case BarrierSet::G1SATBCTLogging: |
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131 { |
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132 // flatten object address if needed |
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133 // We do it regardless of precise because we need the registers |
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134 if (obj.index() == noreg && obj.disp() == 0) { |
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135 if (obj.base() != rdx) { |
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136 __ movl(rdx, obj.base()); |
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137 } |
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138 } else { |
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139 __ leal(rdx, obj); |
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140 } |
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141 __ get_thread(rcx); |
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142 __ save_bcp(); |
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143 __ g1_write_barrier_pre(rdx /* obj */, |
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144 rbx /* pre_val */, |
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145 rcx /* thread */, |
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146 rsi /* tmp */, |
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147 val != noreg /* tosca_live */, |
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148 false /* expand_call */); |
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149 |
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150 // Do the actual store |
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151 // noreg means NULL |
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152 if (val == noreg) { |
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153 __ movptr(Address(rdx, 0), NULL_WORD); |
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154 // No post barrier for NULL |
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155 } else { |
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156 __ movl(Address(rdx, 0), val); |
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157 __ g1_write_barrier_post(rdx /* store_adr */, |
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158 val /* new_val */, |
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159 rcx /* thread */, |
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160 rbx /* tmp */, |
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161 rsi /* tmp2 */); |
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162 } |
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163 __ restore_bcp(); |
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164 |
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165 } |
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166 break; |
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167 #endif // SERIALGC |
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168 case BarrierSet::CardTableModRef: |
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169 case BarrierSet::CardTableExtension: |
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170 { |
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171 if (val == noreg) { |
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172 __ movptr(obj, NULL_WORD); |
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173 } else { |
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174 __ movl(obj, val); |
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175 // flatten object address if needed |
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176 if (!precise || (obj.index() == noreg && obj.disp() == 0)) { |
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177 __ store_check(obj.base()); |
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178 } else { |
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179 __ leal(rdx, obj); |
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180 __ store_check(rdx); |
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181 } |
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182 } |
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183 } |
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184 break; |
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185 case BarrierSet::ModRef: |
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186 case BarrierSet::Other: |
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187 if (val == noreg) { |
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188 __ movptr(obj, NULL_WORD); |
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189 } else { |
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190 __ movl(obj, val); |
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191 } |
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192 break; |
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193 default : |
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194 ShouldNotReachHere(); |
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195 |
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196 } |
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197 } |
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198 |
0 | 199 Address TemplateTable::at_bcp(int offset) { |
200 assert(_desc->uses_bcp(), "inconsistent uses_bcp information"); | |
201 return Address(rsi, offset); | |
202 } | |
203 | |
204 | |
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205 void TemplateTable::patch_bytecode(Bytecodes::Code bc, Register bc_reg, |
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206 Register temp_reg, bool load_bc_into_bc_reg/*=true*/, |
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207 int byte_no) { |
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208 if (!RewriteBytecodes) return; |
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209 Label L_patch_done; |
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210 |
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211 switch (bc) { |
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212 case Bytecodes::_fast_aputfield: |
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213 case Bytecodes::_fast_bputfield: |
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214 case Bytecodes::_fast_cputfield: |
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215 case Bytecodes::_fast_dputfield: |
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216 case Bytecodes::_fast_fputfield: |
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217 case Bytecodes::_fast_iputfield: |
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218 case Bytecodes::_fast_lputfield: |
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219 case Bytecodes::_fast_sputfield: |
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220 { |
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221 // We skip bytecode quickening for putfield instructions when |
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222 // the put_code written to the constant pool cache is zero. |
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223 // This is required so that every execution of this instruction |
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224 // calls out to InterpreterRuntime::resolve_get_put to do |
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225 // additional, required work. |
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226 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range"); |
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227 assert(load_bc_into_bc_reg, "we use bc_reg as temp"); |
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228 __ get_cache_and_index_and_bytecode_at_bcp(bc_reg, temp_reg, temp_reg, byte_no, 1); |
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229 __ movl(bc_reg, bc); |
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230 __ cmpl(temp_reg, (int) 0); |
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231 __ jcc(Assembler::zero, L_patch_done); // don't patch |
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232 } |
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233 break; |
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234 default: |
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235 assert(byte_no == -1, "sanity"); |
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236 // the pair bytecodes have already done the load. |
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237 if (load_bc_into_bc_reg) { |
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238 __ movl(bc_reg, bc); |
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239 } |
304 | 240 } |
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241 |
0 | 242 if (JvmtiExport::can_post_breakpoint()) { |
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243 Label L_fast_patch; |
0 | 244 // if a breakpoint is present we can't rewrite the stream directly |
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245 __ movzbl(temp_reg, at_bcp(0)); |
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246 __ cmpl(temp_reg, Bytecodes::_breakpoint); |
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247 __ jcc(Assembler::notEqual, L_fast_patch); |
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248 __ get_method(temp_reg); |
0 | 249 // Let breakpoint table handling rewrite to quicker bytecode |
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250 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), temp_reg, rsi, bc_reg); |
0 | 251 #ifndef ASSERT |
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252 __ jmpb(L_patch_done); |
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253 #else |
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254 __ jmp(L_patch_done); |
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255 #endif |
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256 __ bind(L_fast_patch); |
0 | 257 } |
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258 |
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259 #ifdef ASSERT |
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260 Label L_okay; |
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261 __ load_unsigned_byte(temp_reg, at_bcp(0)); |
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262 __ cmpl(temp_reg, (int)Bytecodes::java_code(bc)); |
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263 __ jccb(Assembler::equal, L_okay); |
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264 __ cmpl(temp_reg, bc_reg); |
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265 __ jcc(Assembler::equal, L_okay); |
0 | 266 __ stop("patching the wrong bytecode"); |
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267 __ bind(L_okay); |
0 | 268 #endif |
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269 |
0 | 270 // patch bytecode |
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271 __ movb(at_bcp(0), bc_reg); |
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272 __ bind(L_patch_done); |
0 | 273 } |
274 | |
275 //---------------------------------------------------------------------------------------------------- | |
276 // Individual instructions | |
277 | |
278 void TemplateTable::nop() { | |
279 transition(vtos, vtos); | |
280 // nothing to do | |
281 } | |
282 | |
283 void TemplateTable::shouldnotreachhere() { | |
284 transition(vtos, vtos); | |
285 __ stop("shouldnotreachhere bytecode"); | |
286 } | |
287 | |
288 | |
289 | |
290 void TemplateTable::aconst_null() { | |
291 transition(vtos, atos); | |
304 | 292 __ xorptr(rax, rax); |
0 | 293 } |
294 | |
295 | |
296 void TemplateTable::iconst(int value) { | |
297 transition(vtos, itos); | |
298 if (value == 0) { | |
304 | 299 __ xorptr(rax, rax); |
0 | 300 } else { |
304 | 301 __ movptr(rax, value); |
0 | 302 } |
303 } | |
304 | |
305 | |
306 void TemplateTable::lconst(int value) { | |
307 transition(vtos, ltos); | |
308 if (value == 0) { | |
304 | 309 __ xorptr(rax, rax); |
0 | 310 } else { |
304 | 311 __ movptr(rax, value); |
0 | 312 } |
313 assert(value >= 0, "check this code"); | |
304 | 314 __ xorptr(rdx, rdx); |
0 | 315 } |
316 | |
317 | |
318 void TemplateTable::fconst(int value) { | |
319 transition(vtos, ftos); | |
320 if (value == 0) { __ fldz(); | |
321 } else if (value == 1) { __ fld1(); | |
322 } else if (value == 2) { __ fld1(); __ fld1(); __ faddp(); // should do a better solution here | |
323 } else { ShouldNotReachHere(); | |
324 } | |
325 } | |
326 | |
327 | |
328 void TemplateTable::dconst(int value) { | |
329 transition(vtos, dtos); | |
330 if (value == 0) { __ fldz(); | |
331 } else if (value == 1) { __ fld1(); | |
332 } else { ShouldNotReachHere(); | |
333 } | |
334 } | |
335 | |
336 | |
337 void TemplateTable::bipush() { | |
338 transition(vtos, itos); | |
339 __ load_signed_byte(rax, at_bcp(1)); | |
340 } | |
341 | |
342 | |
343 void TemplateTable::sipush() { | |
344 transition(vtos, itos); | |
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345 __ load_unsigned_short(rax, at_bcp(1)); |
304 | 346 __ bswapl(rax); |
0 | 347 __ sarl(rax, 16); |
348 } | |
349 | |
350 void TemplateTable::ldc(bool wide) { | |
351 transition(vtos, vtos); | |
352 Label call_ldc, notFloat, notClass, Done; | |
353 | |
354 if (wide) { | |
355 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
356 } else { | |
357 __ load_unsigned_byte(rbx, at_bcp(1)); | |
358 } | |
359 __ get_cpool_and_tags(rcx, rax); | |
360 const int base_offset = constantPoolOopDesc::header_size() * wordSize; | |
361 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
362 | |
363 // get type | |
304 | 364 __ xorptr(rdx, rdx); |
0 | 365 __ movb(rdx, Address(rax, rbx, Address::times_1, tags_offset)); |
366 | |
367 // unresolved string - get the resolved string | |
368 __ cmpl(rdx, JVM_CONSTANT_UnresolvedString); | |
369 __ jccb(Assembler::equal, call_ldc); | |
370 | |
371 // unresolved class - get the resolved class | |
372 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClass); | |
373 __ jccb(Assembler::equal, call_ldc); | |
374 | |
375 // unresolved class in error (resolution failed) - call into runtime | |
376 // so that the same error from first resolution attempt is thrown. | |
377 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClassInError); | |
378 __ jccb(Assembler::equal, call_ldc); | |
379 | |
380 // resolved class - need to call vm to get java mirror of the class | |
381 __ cmpl(rdx, JVM_CONSTANT_Class); | |
382 __ jcc(Assembler::notEqual, notClass); | |
383 | |
384 __ bind(call_ldc); | |
385 __ movl(rcx, wide); | |
386 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), rcx); | |
387 __ push(atos); | |
388 __ jmp(Done); | |
389 | |
390 __ bind(notClass); | |
391 __ cmpl(rdx, JVM_CONSTANT_Float); | |
392 __ jccb(Assembler::notEqual, notFloat); | |
393 // ftos | |
304 | 394 __ fld_s( Address(rcx, rbx, Address::times_ptr, base_offset)); |
0 | 395 __ push(ftos); |
396 __ jmp(Done); | |
397 | |
398 __ bind(notFloat); | |
399 #ifdef ASSERT | |
400 { Label L; | |
401 __ cmpl(rdx, JVM_CONSTANT_Integer); | |
402 __ jcc(Assembler::equal, L); | |
403 __ cmpl(rdx, JVM_CONSTANT_String); | |
404 __ jcc(Assembler::equal, L); | |
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405 __ cmpl(rdx, JVM_CONSTANT_Object); |
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406 __ jcc(Assembler::equal, L); |
0 | 407 __ stop("unexpected tag type in ldc"); |
408 __ bind(L); | |
409 } | |
410 #endif | |
411 Label isOop; | |
412 // atos and itos | |
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413 // Integer is only non-oop type we will see here |
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414 __ cmpl(rdx, JVM_CONSTANT_Integer); |
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415 __ jccb(Assembler::notEqual, isOop); |
304 | 416 __ movl(rax, Address(rcx, rbx, Address::times_ptr, base_offset)); |
0 | 417 __ push(itos); |
418 __ jmp(Done); | |
419 __ bind(isOop); | |
304 | 420 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, base_offset)); |
0 | 421 __ push(atos); |
422 | |
423 if (VerifyOops) { | |
424 __ verify_oop(rax); | |
425 } | |
426 __ bind(Done); | |
427 } | |
428 | |
1602 | 429 // Fast path for caching oop constants. |
430 // %%% We should use this to handle Class and String constants also. | |
431 // %%% It will simplify the ldc/primitive path considerably. | |
432 void TemplateTable::fast_aldc(bool wide) { | |
433 transition(vtos, atos); | |
434 | |
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435 if (!EnableInvokeDynamic) { |
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436 // We should not encounter this bytecode if !EnableInvokeDynamic. |
1602 | 437 // The verifier will stop it. However, if we get past the verifier, |
438 // this will stop the thread in a reasonable way, without crashing the JVM. | |
439 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
440 InterpreterRuntime::throw_IncompatibleClassChangeError)); | |
441 // the call_VM checks for exception, so we should never return here. | |
442 __ should_not_reach_here(); | |
443 return; | |
444 } | |
445 | |
446 const Register cache = rcx; | |
447 const Register index = rdx; | |
448 | |
449 resolve_cache_and_index(f1_oop, rax, cache, index, wide ? sizeof(u2) : sizeof(u1)); | |
450 if (VerifyOops) { | |
451 __ verify_oop(rax); | |
452 } | |
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453 |
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454 Label L_done, L_throw_exception; |
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455 const Register con_klass_temp = rcx; // same as Rcache |
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456 __ load_klass(con_klass_temp, rax); |
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457 __ cmpptr(con_klass_temp, ExternalAddress((address)Universe::systemObjArrayKlassObj_addr())); |
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458 __ jcc(Assembler::notEqual, L_done); |
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459 __ cmpl(Address(rax, arrayOopDesc::length_offset_in_bytes()), 0); |
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460 __ jcc(Assembler::notEqual, L_throw_exception); |
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461 __ xorptr(rax, rax); |
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462 __ jmp(L_done); |
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463 |
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464 // Load the exception from the system-array which wraps it: |
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465 __ bind(L_throw_exception); |
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466 __ load_heap_oop(rax, Address(rax, arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
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467 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); |
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468 |
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469 __ bind(L_done); |
1602 | 470 } |
471 | |
0 | 472 void TemplateTable::ldc2_w() { |
473 transition(vtos, vtos); | |
474 Label Long, Done; | |
475 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
476 | |
477 __ get_cpool_and_tags(rcx, rax); | |
478 const int base_offset = constantPoolOopDesc::header_size() * wordSize; | |
479 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
480 | |
481 // get type | |
482 __ cmpb(Address(rax, rbx, Address::times_1, tags_offset), JVM_CONSTANT_Double); | |
483 __ jccb(Assembler::notEqual, Long); | |
484 // dtos | |
304 | 485 __ fld_d( Address(rcx, rbx, Address::times_ptr, base_offset)); |
0 | 486 __ push(dtos); |
487 __ jmpb(Done); | |
488 | |
489 __ bind(Long); | |
490 // ltos | |
304 | 491 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, base_offset + 0 * wordSize)); |
492 NOT_LP64(__ movptr(rdx, Address(rcx, rbx, Address::times_ptr, base_offset + 1 * wordSize))); | |
0 | 493 |
494 __ push(ltos); | |
495 | |
496 __ bind(Done); | |
497 } | |
498 | |
499 | |
500 void TemplateTable::locals_index(Register reg, int offset) { | |
501 __ load_unsigned_byte(reg, at_bcp(offset)); | |
304 | 502 __ negptr(reg); |
0 | 503 } |
504 | |
505 | |
506 void TemplateTable::iload() { | |
507 transition(vtos, itos); | |
508 if (RewriteFrequentPairs) { | |
509 Label rewrite, done; | |
510 | |
511 // get next byte | |
512 __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_iload))); | |
513 // if _iload, wait to rewrite to iload2. We only want to rewrite the | |
514 // last two iloads in a pair. Comparing against fast_iload means that | |
515 // the next bytecode is neither an iload or a caload, and therefore | |
516 // an iload pair. | |
517 __ cmpl(rbx, Bytecodes::_iload); | |
518 __ jcc(Assembler::equal, done); | |
519 | |
520 __ cmpl(rbx, Bytecodes::_fast_iload); | |
521 __ movl(rcx, Bytecodes::_fast_iload2); | |
522 __ jccb(Assembler::equal, rewrite); | |
523 | |
524 // if _caload, rewrite to fast_icaload | |
525 __ cmpl(rbx, Bytecodes::_caload); | |
526 __ movl(rcx, Bytecodes::_fast_icaload); | |
527 __ jccb(Assembler::equal, rewrite); | |
528 | |
529 // rewrite so iload doesn't check again. | |
530 __ movl(rcx, Bytecodes::_fast_iload); | |
531 | |
532 // rewrite | |
533 // rcx: fast bytecode | |
534 __ bind(rewrite); | |
535 patch_bytecode(Bytecodes::_iload, rcx, rbx, false); | |
536 __ bind(done); | |
537 } | |
538 | |
539 // Get the local value into tos | |
540 locals_index(rbx); | |
541 __ movl(rax, iaddress(rbx)); | |
542 } | |
543 | |
544 | |
545 void TemplateTable::fast_iload2() { | |
546 transition(vtos, itos); | |
547 locals_index(rbx); | |
548 __ movl(rax, iaddress(rbx)); | |
549 __ push(itos); | |
550 locals_index(rbx, 3); | |
551 __ movl(rax, iaddress(rbx)); | |
552 } | |
553 | |
554 void TemplateTable::fast_iload() { | |
555 transition(vtos, itos); | |
556 locals_index(rbx); | |
557 __ movl(rax, iaddress(rbx)); | |
558 } | |
559 | |
560 | |
561 void TemplateTable::lload() { | |
562 transition(vtos, ltos); | |
563 locals_index(rbx); | |
304 | 564 __ movptr(rax, laddress(rbx)); |
565 NOT_LP64(__ movl(rdx, haddress(rbx))); | |
0 | 566 } |
567 | |
568 | |
569 void TemplateTable::fload() { | |
570 transition(vtos, ftos); | |
571 locals_index(rbx); | |
572 __ fld_s(faddress(rbx)); | |
573 } | |
574 | |
575 | |
576 void TemplateTable::dload() { | |
577 transition(vtos, dtos); | |
578 locals_index(rbx); | |
1506 | 579 __ fld_d(daddress(rbx)); |
0 | 580 } |
581 | |
582 | |
583 void TemplateTable::aload() { | |
584 transition(vtos, atos); | |
585 locals_index(rbx); | |
304 | 586 __ movptr(rax, aaddress(rbx)); |
0 | 587 } |
588 | |
589 | |
590 void TemplateTable::locals_index_wide(Register reg) { | |
591 __ movl(reg, at_bcp(2)); | |
304 | 592 __ bswapl(reg); |
0 | 593 __ shrl(reg, 16); |
304 | 594 __ negptr(reg); |
0 | 595 } |
596 | |
597 | |
598 void TemplateTable::wide_iload() { | |
599 transition(vtos, itos); | |
600 locals_index_wide(rbx); | |
601 __ movl(rax, iaddress(rbx)); | |
602 } | |
603 | |
604 | |
605 void TemplateTable::wide_lload() { | |
606 transition(vtos, ltos); | |
607 locals_index_wide(rbx); | |
304 | 608 __ movptr(rax, laddress(rbx)); |
609 NOT_LP64(__ movl(rdx, haddress(rbx))); | |
0 | 610 } |
611 | |
612 | |
613 void TemplateTable::wide_fload() { | |
614 transition(vtos, ftos); | |
615 locals_index_wide(rbx); | |
616 __ fld_s(faddress(rbx)); | |
617 } | |
618 | |
619 | |
620 void TemplateTable::wide_dload() { | |
621 transition(vtos, dtos); | |
622 locals_index_wide(rbx); | |
1506 | 623 __ fld_d(daddress(rbx)); |
0 | 624 } |
625 | |
626 | |
627 void TemplateTable::wide_aload() { | |
628 transition(vtos, atos); | |
629 locals_index_wide(rbx); | |
304 | 630 __ movptr(rax, aaddress(rbx)); |
0 | 631 } |
632 | |
633 void TemplateTable::index_check(Register array, Register index) { | |
634 // Pop ptr into array | |
635 __ pop_ptr(array); | |
636 index_check_without_pop(array, index); | |
637 } | |
638 | |
639 void TemplateTable::index_check_without_pop(Register array, Register index) { | |
640 // destroys rbx, | |
641 // check array | |
642 __ null_check(array, arrayOopDesc::length_offset_in_bytes()); | |
304 | 643 LP64_ONLY(__ movslq(index, index)); |
0 | 644 // check index |
645 __ cmpl(index, Address(array, arrayOopDesc::length_offset_in_bytes())); | |
646 if (index != rbx) { | |
647 // ??? convention: move aberrant index into rbx, for exception message | |
648 assert(rbx != array, "different registers"); | |
304 | 649 __ mov(rbx, index); |
0 | 650 } |
651 __ jump_cc(Assembler::aboveEqual, | |
652 ExternalAddress(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry)); | |
653 } | |
654 | |
655 | |
656 void TemplateTable::iaload() { | |
657 transition(itos, itos); | |
658 // rdx: array | |
659 index_check(rdx, rax); // kills rbx, | |
660 // rax,: index | |
661 __ movl(rax, Address(rdx, rax, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_INT))); | |
662 } | |
663 | |
664 | |
665 void TemplateTable::laload() { | |
666 transition(itos, ltos); | |
667 // rax,: index | |
668 // rdx: array | |
669 index_check(rdx, rax); | |
304 | 670 __ mov(rbx, rax); |
0 | 671 // rbx,: index |
304 | 672 __ movptr(rax, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize)); |
673 NOT_LP64(__ movl(rdx, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize))); | |
0 | 674 } |
675 | |
676 | |
677 void TemplateTable::faload() { | |
678 transition(itos, ftos); | |
679 // rdx: array | |
680 index_check(rdx, rax); // kills rbx, | |
681 // rax,: index | |
682 __ fld_s(Address(rdx, rax, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT))); | |
683 } | |
684 | |
685 | |
686 void TemplateTable::daload() { | |
687 transition(itos, dtos); | |
688 // rdx: array | |
689 index_check(rdx, rax); // kills rbx, | |
690 // rax,: index | |
691 __ fld_d(Address(rdx, rax, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); | |
692 } | |
693 | |
694 | |
695 void TemplateTable::aaload() { | |
696 transition(itos, atos); | |
697 // rdx: array | |
698 index_check(rdx, rax); // kills rbx, | |
699 // rax,: index | |
304 | 700 __ movptr(rax, Address(rdx, rax, Address::times_ptr, arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
0 | 701 } |
702 | |
703 | |
704 void TemplateTable::baload() { | |
705 transition(itos, itos); | |
706 // rdx: array | |
707 index_check(rdx, rax); // kills rbx, | |
708 // rax,: index | |
709 // can do better code for P5 - fix this at some point | |
710 __ load_signed_byte(rbx, Address(rdx, rax, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE))); | |
304 | 711 __ mov(rax, rbx); |
0 | 712 } |
713 | |
714 | |
715 void TemplateTable::caload() { | |
716 transition(itos, itos); | |
717 // rdx: array | |
718 index_check(rdx, rax); // kills rbx, | |
719 // rax,: index | |
720 // can do better code for P5 - may want to improve this at some point | |
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721 __ load_unsigned_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
304 | 722 __ mov(rax, rbx); |
0 | 723 } |
724 | |
725 // iload followed by caload frequent pair | |
726 void TemplateTable::fast_icaload() { | |
727 transition(vtos, itos); | |
728 // load index out of locals | |
729 locals_index(rbx); | |
730 __ movl(rax, iaddress(rbx)); | |
731 | |
732 // rdx: array | |
733 index_check(rdx, rax); | |
734 // rax,: index | |
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735 __ load_unsigned_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
304 | 736 __ mov(rax, rbx); |
0 | 737 } |
738 | |
739 void TemplateTable::saload() { | |
740 transition(itos, itos); | |
741 // rdx: array | |
742 index_check(rdx, rax); // kills rbx, | |
743 // rax,: index | |
744 // can do better code for P5 - may want to improve this at some point | |
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745 __ load_signed_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_SHORT))); |
304 | 746 __ mov(rax, rbx); |
0 | 747 } |
748 | |
749 | |
750 void TemplateTable::iload(int n) { | |
751 transition(vtos, itos); | |
752 __ movl(rax, iaddress(n)); | |
753 } | |
754 | |
755 | |
756 void TemplateTable::lload(int n) { | |
757 transition(vtos, ltos); | |
304 | 758 __ movptr(rax, laddress(n)); |
759 NOT_LP64(__ movptr(rdx, haddress(n))); | |
0 | 760 } |
761 | |
762 | |
763 void TemplateTable::fload(int n) { | |
764 transition(vtos, ftos); | |
765 __ fld_s(faddress(n)); | |
766 } | |
767 | |
768 | |
769 void TemplateTable::dload(int n) { | |
770 transition(vtos, dtos); | |
1506 | 771 __ fld_d(daddress(n)); |
0 | 772 } |
773 | |
774 | |
775 void TemplateTable::aload(int n) { | |
776 transition(vtos, atos); | |
304 | 777 __ movptr(rax, aaddress(n)); |
0 | 778 } |
779 | |
780 | |
781 void TemplateTable::aload_0() { | |
782 transition(vtos, atos); | |
783 // According to bytecode histograms, the pairs: | |
784 // | |
785 // _aload_0, _fast_igetfield | |
786 // _aload_0, _fast_agetfield | |
787 // _aload_0, _fast_fgetfield | |
788 // | |
789 // occur frequently. If RewriteFrequentPairs is set, the (slow) _aload_0 | |
790 // bytecode checks if the next bytecode is either _fast_igetfield, | |
791 // _fast_agetfield or _fast_fgetfield and then rewrites the | |
792 // current bytecode into a pair bytecode; otherwise it rewrites the current | |
793 // bytecode into _fast_aload_0 that doesn't do the pair check anymore. | |
794 // | |
795 // Note: If the next bytecode is _getfield, the rewrite must be delayed, | |
796 // otherwise we may miss an opportunity for a pair. | |
797 // | |
798 // Also rewrite frequent pairs | |
799 // aload_0, aload_1 | |
800 // aload_0, iload_1 | |
801 // These bytecodes with a small amount of code are most profitable to rewrite | |
802 if (RewriteFrequentPairs) { | |
803 Label rewrite, done; | |
804 // get next byte | |
805 __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_aload_0))); | |
806 | |
807 // do actual aload_0 | |
808 aload(0); | |
809 | |
810 // if _getfield then wait with rewrite | |
811 __ cmpl(rbx, Bytecodes::_getfield); | |
812 __ jcc(Assembler::equal, done); | |
813 | |
814 // if _igetfield then reqrite to _fast_iaccess_0 | |
815 assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
816 __ cmpl(rbx, Bytecodes::_fast_igetfield); | |
817 __ movl(rcx, Bytecodes::_fast_iaccess_0); | |
818 __ jccb(Assembler::equal, rewrite); | |
819 | |
820 // if _agetfield then reqrite to _fast_aaccess_0 | |
821 assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
822 __ cmpl(rbx, Bytecodes::_fast_agetfield); | |
823 __ movl(rcx, Bytecodes::_fast_aaccess_0); | |
824 __ jccb(Assembler::equal, rewrite); | |
825 | |
826 // if _fgetfield then reqrite to _fast_faccess_0 | |
827 assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
828 __ cmpl(rbx, Bytecodes::_fast_fgetfield); | |
829 __ movl(rcx, Bytecodes::_fast_faccess_0); | |
830 __ jccb(Assembler::equal, rewrite); | |
831 | |
832 // else rewrite to _fast_aload0 | |
833 assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
834 __ movl(rcx, Bytecodes::_fast_aload_0); | |
835 | |
836 // rewrite | |
837 // rcx: fast bytecode | |
838 __ bind(rewrite); | |
839 patch_bytecode(Bytecodes::_aload_0, rcx, rbx, false); | |
840 | |
841 __ bind(done); | |
842 } else { | |
843 aload(0); | |
844 } | |
845 } | |
846 | |
847 void TemplateTable::istore() { | |
848 transition(itos, vtos); | |
849 locals_index(rbx); | |
850 __ movl(iaddress(rbx), rax); | |
851 } | |
852 | |
853 | |
854 void TemplateTable::lstore() { | |
855 transition(ltos, vtos); | |
856 locals_index(rbx); | |
304 | 857 __ movptr(laddress(rbx), rax); |
858 NOT_LP64(__ movptr(haddress(rbx), rdx)); | |
0 | 859 } |
860 | |
861 | |
862 void TemplateTable::fstore() { | |
863 transition(ftos, vtos); | |
864 locals_index(rbx); | |
865 __ fstp_s(faddress(rbx)); | |
866 } | |
867 | |
868 | |
869 void TemplateTable::dstore() { | |
870 transition(dtos, vtos); | |
871 locals_index(rbx); | |
1506 | 872 __ fstp_d(daddress(rbx)); |
0 | 873 } |
874 | |
875 | |
876 void TemplateTable::astore() { | |
877 transition(vtos, vtos); | |
1506 | 878 __ pop_ptr(rax); |
0 | 879 locals_index(rbx); |
304 | 880 __ movptr(aaddress(rbx), rax); |
0 | 881 } |
882 | |
883 | |
884 void TemplateTable::wide_istore() { | |
885 transition(vtos, vtos); | |
886 __ pop_i(rax); | |
887 locals_index_wide(rbx); | |
888 __ movl(iaddress(rbx), rax); | |
889 } | |
890 | |
891 | |
892 void TemplateTable::wide_lstore() { | |
893 transition(vtos, vtos); | |
894 __ pop_l(rax, rdx); | |
895 locals_index_wide(rbx); | |
304 | 896 __ movptr(laddress(rbx), rax); |
897 NOT_LP64(__ movl(haddress(rbx), rdx)); | |
0 | 898 } |
899 | |
900 | |
901 void TemplateTable::wide_fstore() { | |
902 wide_istore(); | |
903 } | |
904 | |
905 | |
906 void TemplateTable::wide_dstore() { | |
907 wide_lstore(); | |
908 } | |
909 | |
910 | |
911 void TemplateTable::wide_astore() { | |
912 transition(vtos, vtos); | |
1506 | 913 __ pop_ptr(rax); |
0 | 914 locals_index_wide(rbx); |
304 | 915 __ movptr(aaddress(rbx), rax); |
0 | 916 } |
917 | |
918 | |
919 void TemplateTable::iastore() { | |
920 transition(itos, vtos); | |
921 __ pop_i(rbx); | |
922 // rax,: value | |
923 // rdx: array | |
924 index_check(rdx, rbx); // prefer index in rbx, | |
925 // rbx,: index | |
926 __ movl(Address(rdx, rbx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_INT)), rax); | |
927 } | |
928 | |
929 | |
930 void TemplateTable::lastore() { | |
931 transition(ltos, vtos); | |
932 __ pop_i(rbx); | |
933 // rax,: low(value) | |
934 // rcx: array | |
935 // rdx: high(value) | |
936 index_check(rcx, rbx); // prefer index in rbx, | |
937 // rbx,: index | |
304 | 938 __ movptr(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize), rax); |
939 NOT_LP64(__ movl(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize), rdx)); | |
0 | 940 } |
941 | |
942 | |
943 void TemplateTable::fastore() { | |
944 transition(ftos, vtos); | |
945 __ pop_i(rbx); | |
946 // rdx: array | |
947 // st0: value | |
948 index_check(rdx, rbx); // prefer index in rbx, | |
949 // rbx,: index | |
950 __ fstp_s(Address(rdx, rbx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT))); | |
951 } | |
952 | |
953 | |
954 void TemplateTable::dastore() { | |
955 transition(dtos, vtos); | |
956 __ pop_i(rbx); | |
957 // rdx: array | |
958 // st0: value | |
959 index_check(rdx, rbx); // prefer index in rbx, | |
960 // rbx,: index | |
961 __ fstp_d(Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); | |
962 } | |
963 | |
964 | |
965 void TemplateTable::aastore() { | |
966 Label is_null, ok_is_subtype, done; | |
967 transition(vtos, vtos); | |
968 // stack: ..., array, index, value | |
304 | 969 __ movptr(rax, at_tos()); // Value |
0 | 970 __ movl(rcx, at_tos_p1()); // Index |
304 | 971 __ movptr(rdx, at_tos_p2()); // Array |
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972 |
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973 Address element_address(rdx, rcx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_OBJECT)); |
0 | 974 index_check_without_pop(rdx, rcx); // kills rbx, |
975 // do array store check - check for NULL value first | |
304 | 976 __ testptr(rax, rax); |
0 | 977 __ jcc(Assembler::zero, is_null); |
978 | |
979 // Move subklass into EBX | |
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980 __ load_klass(rbx, rax); |
0 | 981 // Move superklass into EAX |
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982 __ load_klass(rax, rdx); |
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983 __ movptr(rax, Address(rax, objArrayKlass::element_klass_offset())); |
304 | 984 // Compress array+index*wordSize+12 into a single register. Frees ECX. |
362 | 985 __ lea(rdx, element_address); |
0 | 986 |
987 // Generate subtype check. Blows ECX. Resets EDI to locals. | |
988 // Superklass in EAX. Subklass in EBX. | |
989 __ gen_subtype_check( rbx, ok_is_subtype ); | |
990 | |
991 // Come here on failure | |
992 // object is at TOS | |
993 __ jump(ExternalAddress(Interpreter::_throw_ArrayStoreException_entry)); | |
994 | |
995 // Come here on success | |
996 __ bind(ok_is_subtype); | |
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997 |
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998 // Get the value to store |
362 | 999 __ movptr(rax, at_rsp()); |
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1000 // and store it with appropriate barrier |
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1001 do_oop_store(_masm, Address(rdx, 0), rax, _bs->kind(), true); |
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1002 |
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1003 __ jmp(done); |
0 | 1004 |
1005 // Have a NULL in EAX, EDX=array, ECX=index. Store NULL at ary[idx] | |
1006 __ bind(is_null); | |
1007 __ profile_null_seen(rbx); | |
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1008 |
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1009 // Store NULL, (noreg means NULL to do_oop_store) |
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1010 do_oop_store(_masm, element_address, noreg, _bs->kind(), true); |
0 | 1011 |
1012 // Pop stack arguments | |
1013 __ bind(done); | |
1506 | 1014 __ addptr(rsp, 3 * Interpreter::stackElementSize); |
0 | 1015 } |
1016 | |
1017 | |
1018 void TemplateTable::bastore() { | |
1019 transition(itos, vtos); | |
1020 __ pop_i(rbx); | |
1021 // rax,: value | |
1022 // rdx: array | |
1023 index_check(rdx, rbx); // prefer index in rbx, | |
1024 // rbx,: index | |
1025 __ movb(Address(rdx, rbx, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE)), rax); | |
1026 } | |
1027 | |
1028 | |
1029 void TemplateTable::castore() { | |
1030 transition(itos, vtos); | |
1031 __ pop_i(rbx); | |
1032 // rax,: value | |
1033 // rdx: array | |
1034 index_check(rdx, rbx); // prefer index in rbx, | |
1035 // rbx,: index | |
1036 __ movw(Address(rdx, rbx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)), rax); | |
1037 } | |
1038 | |
1039 | |
1040 void TemplateTable::sastore() { | |
1041 castore(); | |
1042 } | |
1043 | |
1044 | |
1045 void TemplateTable::istore(int n) { | |
1046 transition(itos, vtos); | |
1047 __ movl(iaddress(n), rax); | |
1048 } | |
1049 | |
1050 | |
1051 void TemplateTable::lstore(int n) { | |
1052 transition(ltos, vtos); | |
304 | 1053 __ movptr(laddress(n), rax); |
1054 NOT_LP64(__ movptr(haddress(n), rdx)); | |
0 | 1055 } |
1056 | |
1057 | |
1058 void TemplateTable::fstore(int n) { | |
1059 transition(ftos, vtos); | |
1060 __ fstp_s(faddress(n)); | |
1061 } | |
1062 | |
1063 | |
1064 void TemplateTable::dstore(int n) { | |
1065 transition(dtos, vtos); | |
1506 | 1066 __ fstp_d(daddress(n)); |
0 | 1067 } |
1068 | |
1069 | |
1070 void TemplateTable::astore(int n) { | |
1071 transition(vtos, vtos); | |
1506 | 1072 __ pop_ptr(rax); |
304 | 1073 __ movptr(aaddress(n), rax); |
0 | 1074 } |
1075 | |
1076 | |
1077 void TemplateTable::pop() { | |
1078 transition(vtos, vtos); | |
1506 | 1079 __ addptr(rsp, Interpreter::stackElementSize); |
0 | 1080 } |
1081 | |
1082 | |
1083 void TemplateTable::pop2() { | |
1084 transition(vtos, vtos); | |
1506 | 1085 __ addptr(rsp, 2*Interpreter::stackElementSize); |
0 | 1086 } |
1087 | |
1088 | |
1089 void TemplateTable::dup() { | |
1090 transition(vtos, vtos); | |
1091 // stack: ..., a | |
1506 | 1092 __ load_ptr(0, rax); |
1093 __ push_ptr(rax); | |
0 | 1094 // stack: ..., a, a |
1095 } | |
1096 | |
1097 | |
1098 void TemplateTable::dup_x1() { | |
1099 transition(vtos, vtos); | |
1100 // stack: ..., a, b | |
1506 | 1101 __ load_ptr( 0, rax); // load b |
1102 __ load_ptr( 1, rcx); // load a | |
1103 __ store_ptr(1, rax); // store b | |
1104 __ store_ptr(0, rcx); // store a | |
1105 __ push_ptr(rax); // push b | |
0 | 1106 // stack: ..., b, a, b |
1107 } | |
1108 | |
1109 | |
1110 void TemplateTable::dup_x2() { | |
1111 transition(vtos, vtos); | |
1112 // stack: ..., a, b, c | |
1506 | 1113 __ load_ptr( 0, rax); // load c |
1114 __ load_ptr( 2, rcx); // load a | |
1115 __ store_ptr(2, rax); // store c in a | |
1116 __ push_ptr(rax); // push c | |
0 | 1117 // stack: ..., c, b, c, c |
1506 | 1118 __ load_ptr( 2, rax); // load b |
1119 __ store_ptr(2, rcx); // store a in b | |
0 | 1120 // stack: ..., c, a, c, c |
1506 | 1121 __ store_ptr(1, rax); // store b in c |
0 | 1122 // stack: ..., c, a, b, c |
1123 } | |
1124 | |
1125 | |
1126 void TemplateTable::dup2() { | |
1127 transition(vtos, vtos); | |
1128 // stack: ..., a, b | |
1506 | 1129 __ load_ptr(1, rax); // load a |
1130 __ push_ptr(rax); // push a | |
1131 __ load_ptr(1, rax); // load b | |
1132 __ push_ptr(rax); // push b | |
0 | 1133 // stack: ..., a, b, a, b |
1134 } | |
1135 | |
1136 | |
1137 void TemplateTable::dup2_x1() { | |
1138 transition(vtos, vtos); | |
1139 // stack: ..., a, b, c | |
1506 | 1140 __ load_ptr( 0, rcx); // load c |
1141 __ load_ptr( 1, rax); // load b | |
1142 __ push_ptr(rax); // push b | |
1143 __ push_ptr(rcx); // push c | |
0 | 1144 // stack: ..., a, b, c, b, c |
1506 | 1145 __ store_ptr(3, rcx); // store c in b |
0 | 1146 // stack: ..., a, c, c, b, c |
1506 | 1147 __ load_ptr( 4, rcx); // load a |
1148 __ store_ptr(2, rcx); // store a in 2nd c | |
0 | 1149 // stack: ..., a, c, a, b, c |
1506 | 1150 __ store_ptr(4, rax); // store b in a |
0 | 1151 // stack: ..., b, c, a, b, c |
1152 // stack: ..., b, c, a, b, c | |
1153 } | |
1154 | |
1155 | |
1156 void TemplateTable::dup2_x2() { | |
1157 transition(vtos, vtos); | |
1158 // stack: ..., a, b, c, d | |
1506 | 1159 __ load_ptr( 0, rcx); // load d |
1160 __ load_ptr( 1, rax); // load c | |
1161 __ push_ptr(rax); // push c | |
1162 __ push_ptr(rcx); // push d | |
0 | 1163 // stack: ..., a, b, c, d, c, d |
1506 | 1164 __ load_ptr( 4, rax); // load b |
1165 __ store_ptr(2, rax); // store b in d | |
1166 __ store_ptr(4, rcx); // store d in b | |
0 | 1167 // stack: ..., a, d, c, b, c, d |
1506 | 1168 __ load_ptr( 5, rcx); // load a |
1169 __ load_ptr( 3, rax); // load c | |
1170 __ store_ptr(3, rcx); // store a in c | |
1171 __ store_ptr(5, rax); // store c in a | |
0 | 1172 // stack: ..., c, d, a, b, c, d |
1173 // stack: ..., c, d, a, b, c, d | |
1174 } | |
1175 | |
1176 | |
1177 void TemplateTable::swap() { | |
1178 transition(vtos, vtos); | |
1179 // stack: ..., a, b | |
1506 | 1180 __ load_ptr( 1, rcx); // load a |
1181 __ load_ptr( 0, rax); // load b | |
1182 __ store_ptr(0, rcx); // store a in b | |
1183 __ store_ptr(1, rax); // store b in a | |
0 | 1184 // stack: ..., b, a |
1185 } | |
1186 | |
1187 | |
1188 void TemplateTable::iop2(Operation op) { | |
1189 transition(itos, itos); | |
1190 switch (op) { | |
1506 | 1191 case add : __ pop_i(rdx); __ addl (rax, rdx); break; |
304 | 1192 case sub : __ mov(rdx, rax); __ pop_i(rax); __ subl (rax, rdx); break; |
1506 | 1193 case mul : __ pop_i(rdx); __ imull(rax, rdx); break; |
1194 case _and : __ pop_i(rdx); __ andl (rax, rdx); break; | |
1195 case _or : __ pop_i(rdx); __ orl (rax, rdx); break; | |
1196 case _xor : __ pop_i(rdx); __ xorl (rax, rdx); break; | |
304 | 1197 case shl : __ mov(rcx, rax); __ pop_i(rax); __ shll (rax); break; // implicit masking of lower 5 bits by Intel shift instr. |
1198 case shr : __ mov(rcx, rax); __ pop_i(rax); __ sarl (rax); break; // implicit masking of lower 5 bits by Intel shift instr. | |
1199 case ushr : __ mov(rcx, rax); __ pop_i(rax); __ shrl (rax); break; // implicit masking of lower 5 bits by Intel shift instr. | |
0 | 1200 default : ShouldNotReachHere(); |
1201 } | |
1202 } | |
1203 | |
1204 | |
1205 void TemplateTable::lop2(Operation op) { | |
1206 transition(ltos, ltos); | |
1207 __ pop_l(rbx, rcx); | |
1208 switch (op) { | |
1506 | 1209 case add : __ addl(rax, rbx); __ adcl(rdx, rcx); break; |
1210 case sub : __ subl(rbx, rax); __ sbbl(rcx, rdx); | |
1211 __ mov (rax, rbx); __ mov (rdx, rcx); break; | |
1212 case _and : __ andl(rax, rbx); __ andl(rdx, rcx); break; | |
1213 case _or : __ orl (rax, rbx); __ orl (rdx, rcx); break; | |
1214 case _xor : __ xorl(rax, rbx); __ xorl(rdx, rcx); break; | |
1215 default : ShouldNotReachHere(); | |
0 | 1216 } |
1217 } | |
1218 | |
1219 | |
1220 void TemplateTable::idiv() { | |
1221 transition(itos, itos); | |
304 | 1222 __ mov(rcx, rax); |
0 | 1223 __ pop_i(rax); |
1224 // Note: could xor rax, and rcx and compare with (-1 ^ min_int). If | |
1225 // they are not equal, one could do a normal division (no correction | |
1226 // needed), which may speed up this implementation for the common case. | |
1227 // (see also JVM spec., p.243 & p.271) | |
1228 __ corrected_idivl(rcx); | |
1229 } | |
1230 | |
1231 | |
1232 void TemplateTable::irem() { | |
1233 transition(itos, itos); | |
304 | 1234 __ mov(rcx, rax); |
0 | 1235 __ pop_i(rax); |
1236 // Note: could xor rax, and rcx and compare with (-1 ^ min_int). If | |
1237 // they are not equal, one could do a normal division (no correction | |
1238 // needed), which may speed up this implementation for the common case. | |
1239 // (see also JVM spec., p.243 & p.271) | |
1240 __ corrected_idivl(rcx); | |
304 | 1241 __ mov(rax, rdx); |
0 | 1242 } |
1243 | |
1244 | |
1245 void TemplateTable::lmul() { | |
1246 transition(ltos, ltos); | |
1247 __ pop_l(rbx, rcx); | |
304 | 1248 __ push(rcx); __ push(rbx); |
1249 __ push(rdx); __ push(rax); | |
0 | 1250 __ lmul(2 * wordSize, 0); |
304 | 1251 __ addptr(rsp, 4 * wordSize); // take off temporaries |
0 | 1252 } |
1253 | |
1254 | |
1255 void TemplateTable::ldiv() { | |
1256 transition(ltos, ltos); | |
1257 __ pop_l(rbx, rcx); | |
304 | 1258 __ push(rcx); __ push(rbx); |
1259 __ push(rdx); __ push(rax); | |
0 | 1260 // check if y = 0 |
1261 __ orl(rax, rdx); | |
1262 __ jump_cc(Assembler::zero, | |
1263 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1264 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::ldiv)); | |
304 | 1265 __ addptr(rsp, 4 * wordSize); // take off temporaries |
0 | 1266 } |
1267 | |
1268 | |
1269 void TemplateTable::lrem() { | |
1270 transition(ltos, ltos); | |
1271 __ pop_l(rbx, rcx); | |
304 | 1272 __ push(rcx); __ push(rbx); |
1273 __ push(rdx); __ push(rax); | |
0 | 1274 // check if y = 0 |
1275 __ orl(rax, rdx); | |
1276 __ jump_cc(Assembler::zero, | |
1277 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1278 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::lrem)); | |
304 | 1279 __ addptr(rsp, 4 * wordSize); |
0 | 1280 } |
1281 | |
1282 | |
1283 void TemplateTable::lshl() { | |
1284 transition(itos, ltos); | |
1285 __ movl(rcx, rax); // get shift count | |
1286 __ pop_l(rax, rdx); // get shift value | |
1287 __ lshl(rdx, rax); | |
1288 } | |
1289 | |
1290 | |
1291 void TemplateTable::lshr() { | |
1292 transition(itos, ltos); | |
304 | 1293 __ mov(rcx, rax); // get shift count |
0 | 1294 __ pop_l(rax, rdx); // get shift value |
1295 __ lshr(rdx, rax, true); | |
1296 } | |
1297 | |
1298 | |
1299 void TemplateTable::lushr() { | |
1300 transition(itos, ltos); | |
304 | 1301 __ mov(rcx, rax); // get shift count |
0 | 1302 __ pop_l(rax, rdx); // get shift value |
1303 __ lshr(rdx, rax); | |
1304 } | |
1305 | |
1306 | |
1307 void TemplateTable::fop2(Operation op) { | |
1308 transition(ftos, ftos); | |
1309 switch (op) { | |
1310 case add: __ fadd_s (at_rsp()); break; | |
1311 case sub: __ fsubr_s(at_rsp()); break; | |
1312 case mul: __ fmul_s (at_rsp()); break; | |
1313 case div: __ fdivr_s(at_rsp()); break; | |
1314 case rem: __ fld_s (at_rsp()); __ fremr(rax); break; | |
1315 default : ShouldNotReachHere(); | |
1316 } | |
1317 __ f2ieee(); | |
304 | 1318 __ pop(rax); // pop float thing off |
0 | 1319 } |
1320 | |
1321 | |
1322 void TemplateTable::dop2(Operation op) { | |
1323 transition(dtos, dtos); | |
1324 | |
1325 switch (op) { | |
1326 case add: __ fadd_d (at_rsp()); break; | |
1327 case sub: __ fsubr_d(at_rsp()); break; | |
1328 case mul: { | |
1329 Label L_strict; | |
1330 Label L_join; | |
1331 const Address access_flags (rcx, methodOopDesc::access_flags_offset()); | |
1332 __ get_method(rcx); | |
1333 __ movl(rcx, access_flags); | |
1334 __ testl(rcx, JVM_ACC_STRICT); | |
1335 __ jccb(Assembler::notZero, L_strict); | |
1336 __ fmul_d (at_rsp()); | |
1337 __ jmpb(L_join); | |
1338 __ bind(L_strict); | |
1339 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); | |
1340 __ fmulp(); | |
1341 __ fmul_d (at_rsp()); | |
1342 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); | |
1343 __ fmulp(); | |
1344 __ bind(L_join); | |
1345 break; | |
1346 } | |
1347 case div: { | |
1348 Label L_strict; | |
1349 Label L_join; | |
1350 const Address access_flags (rcx, methodOopDesc::access_flags_offset()); | |
1351 __ get_method(rcx); | |
1352 __ movl(rcx, access_flags); | |
1353 __ testl(rcx, JVM_ACC_STRICT); | |
1354 __ jccb(Assembler::notZero, L_strict); | |
1355 __ fdivr_d(at_rsp()); | |
1356 __ jmp(L_join); | |
1357 __ bind(L_strict); | |
1358 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); | |
1359 __ fmul_d (at_rsp()); | |
1360 __ fdivrp(); | |
1361 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); | |
1362 __ fmulp(); | |
1363 __ bind(L_join); | |
1364 break; | |
1365 } | |
1366 case rem: __ fld_d (at_rsp()); __ fremr(rax); break; | |
1367 default : ShouldNotReachHere(); | |
1368 } | |
1369 __ d2ieee(); | |
1370 // Pop double precision number from rsp. | |
304 | 1371 __ pop(rax); |
1372 __ pop(rdx); | |
0 | 1373 } |
1374 | |
1375 | |
1376 void TemplateTable::ineg() { | |
1377 transition(itos, itos); | |
1378 __ negl(rax); | |
1379 } | |
1380 | |
1381 | |
1382 void TemplateTable::lneg() { | |
1383 transition(ltos, ltos); | |
1384 __ lneg(rdx, rax); | |
1385 } | |
1386 | |
1387 | |
1388 void TemplateTable::fneg() { | |
1389 transition(ftos, ftos); | |
1390 __ fchs(); | |
1391 } | |
1392 | |
1393 | |
1394 void TemplateTable::dneg() { | |
1395 transition(dtos, dtos); | |
1396 __ fchs(); | |
1397 } | |
1398 | |
1399 | |
1400 void TemplateTable::iinc() { | |
1401 transition(vtos, vtos); | |
1402 __ load_signed_byte(rdx, at_bcp(2)); // get constant | |
1403 locals_index(rbx); | |
1404 __ addl(iaddress(rbx), rdx); | |
1405 } | |
1406 | |
1407 | |
1408 void TemplateTable::wide_iinc() { | |
1409 transition(vtos, vtos); | |
1410 __ movl(rdx, at_bcp(4)); // get constant | |
1411 locals_index_wide(rbx); | |
304 | 1412 __ bswapl(rdx); // swap bytes & sign-extend constant |
0 | 1413 __ sarl(rdx, 16); |
1414 __ addl(iaddress(rbx), rdx); | |
1415 // Note: should probably use only one movl to get both | |
1416 // the index and the constant -> fix this | |
1417 } | |
1418 | |
1419 | |
1420 void TemplateTable::convert() { | |
1421 // Checking | |
1422 #ifdef ASSERT | |
1423 { TosState tos_in = ilgl; | |
1424 TosState tos_out = ilgl; | |
1425 switch (bytecode()) { | |
1426 case Bytecodes::_i2l: // fall through | |
1427 case Bytecodes::_i2f: // fall through | |
1428 case Bytecodes::_i2d: // fall through | |
1429 case Bytecodes::_i2b: // fall through | |
1430 case Bytecodes::_i2c: // fall through | |
1431 case Bytecodes::_i2s: tos_in = itos; break; | |
1432 case Bytecodes::_l2i: // fall through | |
1433 case Bytecodes::_l2f: // fall through | |
1434 case Bytecodes::_l2d: tos_in = ltos; break; | |
1435 case Bytecodes::_f2i: // fall through | |
1436 case Bytecodes::_f2l: // fall through | |
1437 case Bytecodes::_f2d: tos_in = ftos; break; | |
1438 case Bytecodes::_d2i: // fall through | |
1439 case Bytecodes::_d2l: // fall through | |
1440 case Bytecodes::_d2f: tos_in = dtos; break; | |
1441 default : ShouldNotReachHere(); | |
1442 } | |
1443 switch (bytecode()) { | |
1444 case Bytecodes::_l2i: // fall through | |
1445 case Bytecodes::_f2i: // fall through | |
1446 case Bytecodes::_d2i: // fall through | |
1447 case Bytecodes::_i2b: // fall through | |
1448 case Bytecodes::_i2c: // fall through | |
1449 case Bytecodes::_i2s: tos_out = itos; break; | |
1450 case Bytecodes::_i2l: // fall through | |
1451 case Bytecodes::_f2l: // fall through | |
1452 case Bytecodes::_d2l: tos_out = ltos; break; | |
1453 case Bytecodes::_i2f: // fall through | |
1454 case Bytecodes::_l2f: // fall through | |
1455 case Bytecodes::_d2f: tos_out = ftos; break; | |
1456 case Bytecodes::_i2d: // fall through | |
1457 case Bytecodes::_l2d: // fall through | |
1458 case Bytecodes::_f2d: tos_out = dtos; break; | |
1459 default : ShouldNotReachHere(); | |
1460 } | |
1461 transition(tos_in, tos_out); | |
1462 } | |
1463 #endif // ASSERT | |
1464 | |
1465 // Conversion | |
304 | 1466 // (Note: use push(rcx)/pop(rcx) for 1/2-word stack-ptr manipulation) |
0 | 1467 switch (bytecode()) { |
1468 case Bytecodes::_i2l: | |
1469 __ extend_sign(rdx, rax); | |
1470 break; | |
1471 case Bytecodes::_i2f: | |
304 | 1472 __ push(rax); // store int on tos |
0 | 1473 __ fild_s(at_rsp()); // load int to ST0 |
1474 __ f2ieee(); // truncate to float size | |
304 | 1475 __ pop(rcx); // adjust rsp |
0 | 1476 break; |
1477 case Bytecodes::_i2d: | |
304 | 1478 __ push(rax); // add one slot for d2ieee() |
1479 __ push(rax); // store int on tos | |
0 | 1480 __ fild_s(at_rsp()); // load int to ST0 |
1481 __ d2ieee(); // truncate to double size | |
304 | 1482 __ pop(rcx); // adjust rsp |
1483 __ pop(rcx); | |
0 | 1484 break; |
1485 case Bytecodes::_i2b: | |
1486 __ shll(rax, 24); // truncate upper 24 bits | |
1487 __ sarl(rax, 24); // and sign-extend byte | |
304 | 1488 LP64_ONLY(__ movsbl(rax, rax)); |
0 | 1489 break; |
1490 case Bytecodes::_i2c: | |
1491 __ andl(rax, 0xFFFF); // truncate upper 16 bits | |
304 | 1492 LP64_ONLY(__ movzwl(rax, rax)); |
0 | 1493 break; |
1494 case Bytecodes::_i2s: | |
1495 __ shll(rax, 16); // truncate upper 16 bits | |
1496 __ sarl(rax, 16); // and sign-extend short | |
304 | 1497 LP64_ONLY(__ movswl(rax, rax)); |
0 | 1498 break; |
1499 case Bytecodes::_l2i: | |
1500 /* nothing to do */ | |
1501 break; | |
1502 case Bytecodes::_l2f: | |
304 | 1503 __ push(rdx); // store long on tos |
1504 __ push(rax); | |
0 | 1505 __ fild_d(at_rsp()); // load long to ST0 |
1506 __ f2ieee(); // truncate to float size | |
304 | 1507 __ pop(rcx); // adjust rsp |
1508 __ pop(rcx); | |
0 | 1509 break; |
1510 case Bytecodes::_l2d: | |
304 | 1511 __ push(rdx); // store long on tos |
1512 __ push(rax); | |
0 | 1513 __ fild_d(at_rsp()); // load long to ST0 |
1514 __ d2ieee(); // truncate to double size | |
304 | 1515 __ pop(rcx); // adjust rsp |
1516 __ pop(rcx); | |
0 | 1517 break; |
1518 case Bytecodes::_f2i: | |
304 | 1519 __ push(rcx); // reserve space for argument |
0 | 1520 __ fstp_s(at_rsp()); // pass float argument on stack |
1521 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1); | |
1522 break; | |
1523 case Bytecodes::_f2l: | |
304 | 1524 __ push(rcx); // reserve space for argument |
0 | 1525 __ fstp_s(at_rsp()); // pass float argument on stack |
1526 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1); | |
1527 break; | |
1528 case Bytecodes::_f2d: | |
1529 /* nothing to do */ | |
1530 break; | |
1531 case Bytecodes::_d2i: | |
304 | 1532 __ push(rcx); // reserve space for argument |
1533 __ push(rcx); | |
0 | 1534 __ fstp_d(at_rsp()); // pass double argument on stack |
1535 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 2); | |
1536 break; | |
1537 case Bytecodes::_d2l: | |
304 | 1538 __ push(rcx); // reserve space for argument |
1539 __ push(rcx); | |
0 | 1540 __ fstp_d(at_rsp()); // pass double argument on stack |
1541 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 2); | |
1542 break; | |
1543 case Bytecodes::_d2f: | |
304 | 1544 __ push(rcx); // reserve space for f2ieee() |
0 | 1545 __ f2ieee(); // truncate to float size |
304 | 1546 __ pop(rcx); // adjust rsp |
0 | 1547 break; |
1548 default : | |
1549 ShouldNotReachHere(); | |
1550 } | |
1551 } | |
1552 | |
1553 | |
1554 void TemplateTable::lcmp() { | |
1555 transition(ltos, itos); | |
1556 // y = rdx:rax | |
1557 __ pop_l(rbx, rcx); // get x = rcx:rbx | |
1558 __ lcmp2int(rcx, rbx, rdx, rax);// rcx := cmp(x, y) | |
304 | 1559 __ mov(rax, rcx); |
0 | 1560 } |
1561 | |
1562 | |
1563 void TemplateTable::float_cmp(bool is_float, int unordered_result) { | |
1564 if (is_float) { | |
1565 __ fld_s(at_rsp()); | |
1566 } else { | |
1567 __ fld_d(at_rsp()); | |
304 | 1568 __ pop(rdx); |
0 | 1569 } |
304 | 1570 __ pop(rcx); |
0 | 1571 __ fcmp2int(rax, unordered_result < 0); |
1572 } | |
1573 | |
1574 | |
1575 void TemplateTable::branch(bool is_jsr, bool is_wide) { | |
1576 __ get_method(rcx); // ECX holds method | |
1577 __ profile_taken_branch(rax,rbx); // EAX holds updated MDP, EBX holds bumped taken count | |
1578 | |
1579 const ByteSize be_offset = methodOopDesc::backedge_counter_offset() + InvocationCounter::counter_offset(); | |
1580 const ByteSize inv_offset = methodOopDesc::invocation_counter_offset() + InvocationCounter::counter_offset(); | |
1581 const int method_offset = frame::interpreter_frame_method_offset * wordSize; | |
1582 | |
1583 // Load up EDX with the branch displacement | |
1584 __ movl(rdx, at_bcp(1)); | |
304 | 1585 __ bswapl(rdx); |
0 | 1586 if (!is_wide) __ sarl(rdx, 16); |
304 | 1587 LP64_ONLY(__ movslq(rdx, rdx)); |
1588 | |
0 | 1589 |
1590 // Handle all the JSR stuff here, then exit. | |
1591 // It's much shorter and cleaner than intermingling with the | |
605 | 1592 // non-JSR normal-branch stuff occurring below. |
0 | 1593 if (is_jsr) { |
1594 // Pre-load the next target bytecode into EBX | |
1595 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1, 0)); | |
1596 | |
1597 // compute return address as bci in rax, | |
304 | 1598 __ lea(rax, at_bcp((is_wide ? 5 : 3) - in_bytes(constMethodOopDesc::codes_offset()))); |
1599 __ subptr(rax, Address(rcx, methodOopDesc::const_offset())); | |
362 | 1600 // Adjust the bcp in RSI by the displacement in EDX |
304 | 1601 __ addptr(rsi, rdx); |
0 | 1602 // Push return address |
1603 __ push_i(rax); | |
1604 // jsr returns vtos | |
1605 __ dispatch_only_noverify(vtos); | |
1606 return; | |
1607 } | |
1608 | |
1609 // Normal (non-jsr) branch handling | |
1610 | |
362 | 1611 // Adjust the bcp in RSI by the displacement in EDX |
304 | 1612 __ addptr(rsi, rdx); |
0 | 1613 |
1614 assert(UseLoopCounter || !UseOnStackReplacement, "on-stack-replacement requires loop counters"); | |
1615 Label backedge_counter_overflow; | |
1616 Label profile_method; | |
1617 Label dispatch; | |
1618 if (UseLoopCounter) { | |
1619 // increment backedge counter for backward branches | |
1620 // rax,: MDO | |
1621 // rbx,: MDO bumped taken-count | |
1622 // rcx: method | |
1623 // rdx: target offset | |
1624 // rsi: target bcp | |
1625 // rdi: locals pointer | |
1626 __ testl(rdx, rdx); // check if forward or backward branch | |
1627 __ jcc(Assembler::positive, dispatch); // count only if backward branch | |
1628 | |
1783 | 1629 if (TieredCompilation) { |
1630 Label no_mdo; | |
1631 int increment = InvocationCounter::count_increment; | |
1632 int mask = ((1 << Tier0BackedgeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
1633 if (ProfileInterpreter) { | |
1634 // Are we profiling? | |
1635 __ movptr(rbx, Address(rcx, in_bytes(methodOopDesc::method_data_offset()))); | |
1636 __ testptr(rbx, rbx); | |
1637 __ jccb(Assembler::zero, no_mdo); | |
1638 // Increment the MDO backedge counter | |
1639 const Address mdo_backedge_counter(rbx, in_bytes(methodDataOopDesc::backedge_counter_offset()) + | |
1640 in_bytes(InvocationCounter::counter_offset())); | |
1641 __ increment_mask_and_jump(mdo_backedge_counter, increment, mask, | |
1642 rax, false, Assembler::zero, &backedge_counter_overflow); | |
1643 __ jmp(dispatch); | |
0 | 1644 } |
1783 | 1645 __ bind(no_mdo); |
1646 // Increment backedge counter in methodOop | |
1647 __ increment_mask_and_jump(Address(rcx, be_offset), increment, mask, | |
1648 rax, false, Assembler::zero, &backedge_counter_overflow); | |
0 | 1649 } else { |
1783 | 1650 // increment counter |
1651 __ movl(rax, Address(rcx, be_offset)); // load backedge counter | |
1652 __ incrementl(rax, InvocationCounter::count_increment); // increment counter | |
1653 __ movl(Address(rcx, be_offset), rax); // store counter | |
1654 | |
1655 __ movl(rax, Address(rcx, inv_offset)); // load invocation counter | |
1656 __ andl(rax, InvocationCounter::count_mask_value); // and the status bits | |
1657 __ addl(rax, Address(rcx, be_offset)); // add both counters | |
1658 | |
1659 if (ProfileInterpreter) { | |
1660 // Test to see if we should create a method data oop | |
0 | 1661 __ cmp32(rax, |
1783 | 1662 ExternalAddress((address) &InvocationCounter::InterpreterProfileLimit)); |
1663 __ jcc(Assembler::less, dispatch); | |
1664 | |
1665 // if no method data exists, go to profile method | |
1666 __ test_method_data_pointer(rax, profile_method); | |
1667 | |
1668 if (UseOnStackReplacement) { | |
1669 // check for overflow against rbx, which is the MDO taken count | |
1670 __ cmp32(rbx, | |
1671 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1672 __ jcc(Assembler::below, dispatch); | |
1673 | |
1674 // When ProfileInterpreter is on, the backedge_count comes from the | |
1675 // methodDataOop, which value does not get reset on the call to | |
1676 // frequency_counter_overflow(). To avoid excessive calls to the overflow | |
1677 // routine while the method is being compiled, add a second test to make | |
1678 // sure the overflow function is called only once every overflow_frequency. | |
1679 const int overflow_frequency = 1024; | |
1680 __ andptr(rbx, overflow_frequency-1); | |
1681 __ jcc(Assembler::zero, backedge_counter_overflow); | |
1682 } | |
1683 } else { | |
1684 if (UseOnStackReplacement) { | |
1685 // check for overflow against rax, which is the sum of the 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 EBX | |
1697 __ load_unsigned_byte(rbx, Address(rsi, 0)); | |
1698 | |
1699 // continue with the bytecode @ target | |
1700 // rax,: return bci for jsr's, unused otherwise | |
1701 // rbx,: target bytecode | |
1702 // rsi: 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(rsi, 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 | |
1717 // invocation counter overflow | |
1718 __ bind(backedge_counter_overflow); | |
304 | 1719 __ negptr(rdx); |
1720 __ addptr(rdx, rsi); // branch bcp | |
0 | 1721 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rdx); |
1722 __ load_unsigned_byte(rbx, Address(rsi, 0)); // restore target bytecode | |
1723 | |
1724 // rax,: osr nmethod (osr ok) or NULL (osr not possible) | |
1725 // rbx,: target bytecode | |
1726 // rdx: scratch | |
1727 // rdi: locals pointer | |
1728 // rsi: bcp | |
304 | 1729 __ testptr(rax, rax); // test result |
0 | 1730 __ jcc(Assembler::zero, dispatch); // no osr if null |
1731 // nmethod may have been invalidated (VM may block upon call_VM return) | |
1732 __ movl(rcx, Address(rax, nmethod::entry_bci_offset())); | |
1733 __ cmpl(rcx, InvalidOSREntryBci); | |
1734 __ jcc(Assembler::equal, dispatch); | |
1735 | |
1736 // We have the address of an on stack replacement routine in rax, | |
1737 // We need to prepare to execute the OSR method. First we must | |
1738 // migrate the locals and monitors off of the stack. | |
1739 | |
304 | 1740 __ mov(rbx, rax); // save the nmethod |
0 | 1741 |
1742 const Register thread = rcx; | |
1743 __ get_thread(thread); | |
1744 call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin)); | |
1745 // rax, is OSR buffer, move it to expected parameter location | |
304 | 1746 __ mov(rcx, rax); |
0 | 1747 |
1748 // pop the interpreter frame | |
304 | 1749 __ movptr(rdx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 1750 __ leave(); // remove frame anchor |
304 | 1751 __ pop(rdi); // get return address |
1752 __ mov(rsp, rdx); // set sp to sender sp | |
0 | 1753 |
1754 // Align stack pointer for compiled code (note that caller is | |
1755 // responsible for undoing this fixup by remembering the old SP | |
1756 // in an rbp,-relative location) | |
304 | 1757 __ andptr(rsp, -(StackAlignmentInBytes)); |
0 | 1758 |
1759 // push the (possibly adjusted) return address | |
304 | 1760 __ push(rdi); |
0 | 1761 |
1762 // and begin the OSR nmethod | |
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1763 __ jmp(Address(rbx, nmethod::osr_entry_point_offset())); |
0 | 1764 } |
1765 } | |
1766 } | |
1767 | |
1768 | |
1769 void TemplateTable::if_0cmp(Condition cc) { | |
1770 transition(itos, vtos); | |
1771 // assume branch is more often taken than not (loops use backward branches) | |
1772 Label not_taken; | |
1773 __ testl(rax, rax); | |
1774 __ jcc(j_not(cc), not_taken); | |
1775 branch(false, false); | |
1776 __ bind(not_taken); | |
1777 __ profile_not_taken_branch(rax); | |
1778 } | |
1779 | |
1780 | |
1781 void TemplateTable::if_icmp(Condition cc) { | |
1782 transition(itos, vtos); | |
1783 // assume branch is more often taken than not (loops use backward branches) | |
1784 Label not_taken; | |
1785 __ pop_i(rdx); | |
1786 __ cmpl(rdx, rax); | |
1787 __ jcc(j_not(cc), not_taken); | |
1788 branch(false, false); | |
1789 __ bind(not_taken); | |
1790 __ profile_not_taken_branch(rax); | |
1791 } | |
1792 | |
1793 | |
1794 void TemplateTable::if_nullcmp(Condition cc) { | |
1795 transition(atos, vtos); | |
1796 // assume branch is more often taken than not (loops use backward branches) | |
1797 Label not_taken; | |
304 | 1798 __ testptr(rax, rax); |
0 | 1799 __ jcc(j_not(cc), not_taken); |
1800 branch(false, false); | |
1801 __ bind(not_taken); | |
1802 __ profile_not_taken_branch(rax); | |
1803 } | |
1804 | |
1805 | |
1806 void TemplateTable::if_acmp(Condition cc) { | |
1807 transition(atos, vtos); | |
1808 // assume branch is more often taken than not (loops use backward branches) | |
1809 Label not_taken; | |
1810 __ pop_ptr(rdx); | |
304 | 1811 __ cmpptr(rdx, rax); |
0 | 1812 __ jcc(j_not(cc), not_taken); |
1813 branch(false, false); | |
1814 __ bind(not_taken); | |
1815 __ profile_not_taken_branch(rax); | |
1816 } | |
1817 | |
1818 | |
1819 void TemplateTable::ret() { | |
1820 transition(vtos, vtos); | |
1821 locals_index(rbx); | |
304 | 1822 __ movptr(rbx, iaddress(rbx)); // get return bci, compute return bcp |
0 | 1823 __ profile_ret(rbx, rcx); |
1824 __ get_method(rax); | |
304 | 1825 __ movptr(rsi, Address(rax, methodOopDesc::const_offset())); |
1826 __ lea(rsi, Address(rsi, rbx, Address::times_1, | |
1827 constMethodOopDesc::codes_offset())); | |
0 | 1828 __ dispatch_next(vtos); |
1829 } | |
1830 | |
1831 | |
1832 void TemplateTable::wide_ret() { | |
1833 transition(vtos, vtos); | |
1834 locals_index_wide(rbx); | |
304 | 1835 __ movptr(rbx, iaddress(rbx)); // get return bci, compute return bcp |
0 | 1836 __ profile_ret(rbx, rcx); |
1837 __ get_method(rax); | |
304 | 1838 __ movptr(rsi, Address(rax, methodOopDesc::const_offset())); |
1839 __ lea(rsi, Address(rsi, rbx, Address::times_1, constMethodOopDesc::codes_offset())); | |
0 | 1840 __ dispatch_next(vtos); |
1841 } | |
1842 | |
1843 | |
1844 void TemplateTable::tableswitch() { | |
1845 Label default_case, continue_execution; | |
1846 transition(itos, vtos); | |
1847 // align rsi | |
304 | 1848 __ lea(rbx, at_bcp(wordSize)); |
1849 __ andptr(rbx, -wordSize); | |
0 | 1850 // load lo & hi |
1851 __ movl(rcx, Address(rbx, 1 * wordSize)); | |
1852 __ movl(rdx, Address(rbx, 2 * wordSize)); | |
304 | 1853 __ bswapl(rcx); |
1854 __ bswapl(rdx); | |
0 | 1855 // check against lo & hi |
1856 __ cmpl(rax, rcx); | |
1857 __ jccb(Assembler::less, default_case); | |
1858 __ cmpl(rax, rdx); | |
1859 __ jccb(Assembler::greater, default_case); | |
1860 // lookup dispatch offset | |
1861 __ subl(rax, rcx); | |
304 | 1862 __ movl(rdx, Address(rbx, rax, Address::times_4, 3 * BytesPerInt)); |
0 | 1863 __ profile_switch_case(rax, rbx, rcx); |
1864 // continue execution | |
1865 __ bind(continue_execution); | |
304 | 1866 __ bswapl(rdx); |
0 | 1867 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1)); |
304 | 1868 __ addptr(rsi, rdx); |
0 | 1869 __ dispatch_only(vtos); |
1870 // handle default | |
1871 __ bind(default_case); | |
1872 __ profile_switch_default(rax); | |
1873 __ movl(rdx, Address(rbx, 0)); | |
1874 __ jmp(continue_execution); | |
1875 } | |
1876 | |
1877 | |
1878 void TemplateTable::lookupswitch() { | |
1879 transition(itos, itos); | |
1880 __ stop("lookupswitch bytecode should have been rewritten"); | |
1881 } | |
1882 | |
1883 | |
1884 void TemplateTable::fast_linearswitch() { | |
1885 transition(itos, vtos); | |
1886 Label loop_entry, loop, found, continue_execution; | |
304 | 1887 // bswapl rax, so we can avoid bswapping the table entries |
1888 __ bswapl(rax); | |
0 | 1889 // align rsi |
304 | 1890 __ lea(rbx, at_bcp(wordSize)); // btw: should be able to get rid of this instruction (change offsets below) |
1891 __ andptr(rbx, -wordSize); | |
0 | 1892 // set counter |
1893 __ movl(rcx, Address(rbx, wordSize)); | |
304 | 1894 __ bswapl(rcx); |
0 | 1895 __ jmpb(loop_entry); |
1896 // table search | |
1897 __ bind(loop); | |
1898 __ cmpl(rax, Address(rbx, rcx, Address::times_8, 2 * wordSize)); | |
1899 __ jccb(Assembler::equal, found); | |
1900 __ bind(loop_entry); | |
304 | 1901 __ decrementl(rcx); |
0 | 1902 __ jcc(Assembler::greaterEqual, loop); |
1903 // default case | |
1904 __ profile_switch_default(rax); | |
1905 __ movl(rdx, Address(rbx, 0)); | |
1906 __ jmpb(continue_execution); | |
1907 // entry found -> get offset | |
1908 __ bind(found); | |
1909 __ movl(rdx, Address(rbx, rcx, Address::times_8, 3 * wordSize)); | |
1910 __ profile_switch_case(rcx, rax, rbx); | |
1911 // continue execution | |
1912 __ bind(continue_execution); | |
304 | 1913 __ bswapl(rdx); |
0 | 1914 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1)); |
304 | 1915 __ addptr(rsi, rdx); |
0 | 1916 __ dispatch_only(vtos); |
1917 } | |
1918 | |
1919 | |
1920 void TemplateTable::fast_binaryswitch() { | |
1921 transition(itos, vtos); | |
1922 // Implementation using the following core algorithm: | |
1923 // | |
1924 // int binary_search(int key, LookupswitchPair* array, int n) { | |
1925 // // Binary search according to "Methodik des Programmierens" by | |
1926 // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985. | |
1927 // int i = 0; | |
1928 // int j = n; | |
1929 // while (i+1 < j) { | |
1930 // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q) | |
1931 // // with Q: for all i: 0 <= i < n: key < a[i] | |
1932 // // where a stands for the array and assuming that the (inexisting) | |
1933 // // element a[n] is infinitely big. | |
1934 // int h = (i + j) >> 1; | |
1935 // // i < h < j | |
1936 // if (key < array[h].fast_match()) { | |
1937 // j = h; | |
1938 // } else { | |
1939 // i = h; | |
1940 // } | |
1941 // } | |
1942 // // R: a[i] <= key < a[i+1] or Q | |
1943 // // (i.e., if key is within array, i is the correct index) | |
1944 // return i; | |
1945 // } | |
1946 | |
1947 // register allocation | |
1948 const Register key = rax; // already set (tosca) | |
1949 const Register array = rbx; | |
1950 const Register i = rcx; | |
1951 const Register j = rdx; | |
1952 const Register h = rdi; // needs to be restored | |
1953 const Register temp = rsi; | |
1954 // setup array | |
1955 __ save_bcp(); | |
1956 | |
304 | 1957 __ lea(array, at_bcp(3*wordSize)); // btw: should be able to get rid of this instruction (change offsets below) |
1958 __ andptr(array, -wordSize); | |
0 | 1959 // initialize i & j |
1960 __ xorl(i, i); // i = 0; | |
1961 __ movl(j, Address(array, -wordSize)); // j = length(array); | |
1962 // Convert j into native byteordering | |
304 | 1963 __ bswapl(j); |
0 | 1964 // and start |
1965 Label entry; | |
1966 __ jmp(entry); | |
1967 | |
1968 // binary search loop | |
1969 { Label loop; | |
1970 __ bind(loop); | |
1971 // int h = (i + j) >> 1; | |
1972 __ leal(h, Address(i, j, Address::times_1)); // h = i + j; | |
1973 __ sarl(h, 1); // h = (i + j) >> 1; | |
1974 // if (key < array[h].fast_match()) { | |
1975 // j = h; | |
1976 // } else { | |
1977 // i = h; | |
1978 // } | |
1979 // Convert array[h].match to native byte-ordering before compare | |
1980 __ movl(temp, Address(array, h, Address::times_8, 0*wordSize)); | |
304 | 1981 __ bswapl(temp); |
0 | 1982 __ cmpl(key, temp); |
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1983 // j = h if (key < array[h].fast_match()) |
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1984 __ cmov32(Assembler::less , j, h); |
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1985 // i = h if (key >= array[h].fast_match()) |
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1986 __ cmov32(Assembler::greaterEqual, i, h); |
0 | 1987 // while (i+1 < j) |
1988 __ bind(entry); | |
1989 __ leal(h, Address(i, 1)); // i+1 | |
1990 __ cmpl(h, j); // i+1 < j | |
1991 __ jcc(Assembler::less, loop); | |
1992 } | |
1993 | |
1994 // end of binary search, result index is i (must check again!) | |
1995 Label default_case; | |
1996 // Convert array[i].match to native byte-ordering before compare | |
1997 __ movl(temp, Address(array, i, Address::times_8, 0*wordSize)); | |
304 | 1998 __ bswapl(temp); |
0 | 1999 __ cmpl(key, temp); |
2000 __ jcc(Assembler::notEqual, default_case); | |
2001 | |
2002 // entry found -> j = offset | |
2003 __ movl(j , Address(array, i, Address::times_8, 1*wordSize)); | |
2004 __ profile_switch_case(i, key, array); | |
304 | 2005 __ bswapl(j); |
2006 LP64_ONLY(__ movslq(j, j)); | |
0 | 2007 __ restore_bcp(); |
2008 __ restore_locals(); // restore rdi | |
2009 __ load_unsigned_byte(rbx, Address(rsi, j, Address::times_1)); | |
2010 | |
304 | 2011 __ addptr(rsi, j); |
0 | 2012 __ dispatch_only(vtos); |
2013 | |
2014 // default case -> j = default offset | |
2015 __ bind(default_case); | |
2016 __ profile_switch_default(i); | |
2017 __ movl(j, Address(array, -2*wordSize)); | |
304 | 2018 __ bswapl(j); |
2019 LP64_ONLY(__ movslq(j, j)); | |
0 | 2020 __ restore_bcp(); |
2021 __ restore_locals(); // restore rdi | |
2022 __ load_unsigned_byte(rbx, Address(rsi, j, Address::times_1)); | |
304 | 2023 __ addptr(rsi, j); |
0 | 2024 __ dispatch_only(vtos); |
2025 } | |
2026 | |
2027 | |
2028 void TemplateTable::_return(TosState state) { | |
2029 transition(state, state); | |
2030 assert(_desc->calls_vm(), "inconsistent calls_vm information"); // call in remove_activation | |
2031 | |
2032 if (_desc->bytecode() == Bytecodes::_return_register_finalizer) { | |
2033 assert(state == vtos, "only valid state"); | |
304 | 2034 __ movptr(rax, aaddress(0)); |
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2035 __ load_klass(rdi, rax); |
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2036 __ movl(rdi, Address(rdi, Klass::access_flags_offset())); |
0 | 2037 __ testl(rdi, JVM_ACC_HAS_FINALIZER); |
2038 Label skip_register_finalizer; | |
2039 __ jcc(Assembler::zero, skip_register_finalizer); | |
2040 | |
2041 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), rax); | |
2042 | |
2043 __ bind(skip_register_finalizer); | |
2044 } | |
2045 | |
2046 __ remove_activation(state, rsi); | |
2047 __ jmp(rsi); | |
2048 } | |
2049 | |
2050 | |
2051 // ---------------------------------------------------------------------------- | |
2052 // Volatile variables demand their effects be made known to all CPU's in | |
2053 // order. Store buffers on most chips allow reads & writes to reorder; the | |
2054 // JMM's ReadAfterWrite.java test fails in -Xint mode without some kind of | |
2055 // memory barrier (i.e., it's not sufficient that the interpreter does not | |
2056 // reorder volatile references, the hardware also must not reorder them). | |
2057 // | |
2058 // According to the new Java Memory Model (JMM): | |
2059 // (1) All volatiles are serialized wrt to each other. | |
2060 // ALSO reads & writes act as aquire & release, so: | |
2061 // (2) A read cannot let unrelated NON-volatile memory refs that happen after | |
2062 // the read float up to before the read. It's OK for non-volatile memory refs | |
2063 // that happen before the volatile read to float down below it. | |
2064 // (3) Similar a volatile write cannot let unrelated NON-volatile memory refs | |
2065 // that happen BEFORE the write float down to after the write. It's OK for | |
2066 // non-volatile memory refs that happen after the volatile write to float up | |
2067 // before it. | |
2068 // | |
2069 // We only put in barriers around volatile refs (they are expensive), not | |
2070 // _between_ memory refs (that would require us to track the flavor of the | |
2071 // previous memory refs). Requirements (2) and (3) require some barriers | |
2072 // before volatile stores and after volatile loads. These nearly cover | |
2073 // requirement (1) but miss the volatile-store-volatile-load case. This final | |
2074 // case is placed after volatile-stores although it could just as well go | |
2075 // before volatile-loads. | |
304 | 2076 void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits order_constraint ) { |
0 | 2077 // Helper function to insert a is-volatile test and memory barrier |
2078 if( !os::is_MP() ) return; // Not needed on single CPU | |
304 | 2079 __ membar(order_constraint); |
0 | 2080 } |
2081 | |
1565 | 2082 void TemplateTable::resolve_cache_and_index(int byte_no, |
2083 Register result, | |
2084 Register Rcache, | |
2085 Register index, | |
2086 size_t index_size) { | |
0 | 2087 Register temp = rbx; |
2088 | |
1565 | 2089 assert_different_registers(result, Rcache, index, temp); |
2090 | |
0 | 2091 Label resolved; |
1565 | 2092 if (byte_no == f1_oop) { |
2093 // We are resolved if the f1 field contains a non-null object (CallSite, etc.) | |
2094 // This kind of CP cache entry does not need to match the flags byte, because | |
2095 // there is a 1-1 relation between bytecode type and CP entry type. | |
2096 assert(result != noreg, ""); //else do cmpptr(Address(...), (int32_t) NULL_WORD) | |
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2097 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size); |
1565 | 2098 __ movptr(result, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f1_offset())); |
2099 __ testptr(result, result); | |
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2100 __ jcc(Assembler::notEqual, resolved); |
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2101 } else { |
1565 | 2102 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range"); |
2103 assert(result == noreg, ""); //else change code for setting result | |
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2104 __ get_cache_and_index_and_bytecode_at_bcp(Rcache, index, temp, byte_no, 1, index_size); |
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2105 __ cmpl(temp, (int) bytecode()); // have we resolved this bytecode? |
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2106 __ jcc(Assembler::equal, resolved); |
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2107 } |
0 | 2108 |
2109 // resolve first time through | |
2110 address entry; | |
2111 switch (bytecode()) { | |
2112 case Bytecodes::_getstatic : // fall through | |
2113 case Bytecodes::_putstatic : // fall through | |
2114 case Bytecodes::_getfield : // fall through | |
2115 case Bytecodes::_putfield : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put); break; | |
2116 case Bytecodes::_invokevirtual : // fall through | |
2117 case Bytecodes::_invokespecial : // fall through | |
2118 case Bytecodes::_invokestatic : // fall through | |
2119 case Bytecodes::_invokeinterface: entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); break; | |
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2120 case Bytecodes::_invokedynamic : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic); break; |
1602 | 2121 case Bytecodes::_fast_aldc : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); break; |
2122 case Bytecodes::_fast_aldc_w : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); break; | |
0 | 2123 default : ShouldNotReachHere(); break; |
2124 } | |
2125 __ movl(temp, (int)bytecode()); | |
2126 __ call_VM(noreg, entry, temp); | |
2127 // Update registers with resolved info | |
1565 | 2128 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size); |
2129 if (result != noreg) | |
2130 __ movptr(result, Address(Rcache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f1_offset())); | |
0 | 2131 __ bind(resolved); |
2132 } | |
2133 | |
2134 | |
2135 // The cache and index registers must be set before call | |
2136 void TemplateTable::load_field_cp_cache_entry(Register obj, | |
2137 Register cache, | |
2138 Register index, | |
2139 Register off, | |
2140 Register flags, | |
2141 bool is_static = false) { | |
2142 assert_different_registers(cache, index, flags, off); | |
2143 | |
2144 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset(); | |
2145 // Field offset | |
304 | 2146 __ movptr(off, Address(cache, index, Address::times_ptr, |
2147 in_bytes(cp_base_offset + ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2148 // Flags |
304 | 2149 __ movl(flags, Address(cache, index, Address::times_ptr, |
0 | 2150 in_bytes(cp_base_offset + ConstantPoolCacheEntry::flags_offset()))); |
2151 | |
2152 // klass overwrite register | |
2153 if (is_static) { | |
304 | 2154 __ movptr(obj, Address(cache, index, Address::times_ptr, |
2155 in_bytes(cp_base_offset + ConstantPoolCacheEntry::f1_offset()))); | |
0 | 2156 } |
2157 } | |
2158 | |
2159 void TemplateTable::load_invoke_cp_cache_entry(int byte_no, | |
2160 Register method, | |
2161 Register itable_index, | |
2162 Register flags, | |
2163 bool is_invokevirtual, | |
1565 | 2164 bool is_invokevfinal /*unused*/, |
2165 bool is_invokedynamic) { | |
0 | 2166 // setup registers |
2167 const Register cache = rcx; | |
2168 const Register index = rdx; | |
2169 assert_different_registers(method, flags); | |
2170 assert_different_registers(method, cache, index); | |
2171 assert_different_registers(itable_index, flags); | |
2172 assert_different_registers(itable_index, cache, index); | |
2173 // determine constant pool cache field offsets | |
2174 const int method_offset = in_bytes( | |
2175 constantPoolCacheOopDesc::base_offset() + | |
2176 (is_invokevirtual | |
2177 ? ConstantPoolCacheEntry::f2_offset() | |
2178 : ConstantPoolCacheEntry::f1_offset() | |
2179 ) | |
2180 ); | |
2181 const int flags_offset = in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2182 ConstantPoolCacheEntry::flags_offset()); | |
2183 // access constant pool cache fields | |
2184 const int index_offset = in_bytes(constantPoolCacheOopDesc::base_offset() + | |
2185 ConstantPoolCacheEntry::f2_offset()); | |
2186 | |
1565 | 2187 if (byte_no == f1_oop) { |
2188 // Resolved f1_oop goes directly into 'method' register. | |
2189 assert(is_invokedynamic, ""); | |
2190 resolve_cache_and_index(byte_no, method, cache, index, sizeof(u4)); | |
2191 } else { | |
2192 resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2)); | |
2193 __ movptr(method, Address(cache, index, Address::times_ptr, method_offset)); | |
2194 } | |
0 | 2195 if (itable_index != noreg) { |
304 | 2196 __ movptr(itable_index, Address(cache, index, Address::times_ptr, index_offset)); |
0 | 2197 } |
1565 | 2198 __ movl(flags, Address(cache, index, Address::times_ptr, flags_offset)); |
0 | 2199 } |
2200 | |
2201 | |
2202 // The registers cache and index expected to be set before call. | |
2203 // Correct values of the cache and index registers are preserved. | |
2204 void TemplateTable::jvmti_post_field_access(Register cache, | |
2205 Register index, | |
2206 bool is_static, | |
2207 bool has_tos) { | |
2208 if (JvmtiExport::can_post_field_access()) { | |
2209 // Check to see if a field access watch has been set before we take | |
2210 // the time to call into the VM. | |
2211 Label L1; | |
2212 assert_different_registers(cache, index, rax); | |
2213 __ mov32(rax, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2214 __ testl(rax,rax); | |
2215 __ jcc(Assembler::zero, L1); | |
2216 | |
2217 // cache entry pointer | |
304 | 2218 __ addptr(cache, in_bytes(constantPoolCacheOopDesc::base_offset())); |
0 | 2219 __ shll(index, LogBytesPerWord); |
304 | 2220 __ addptr(cache, index); |
0 | 2221 if (is_static) { |
304 | 2222 __ xorptr(rax, rax); // NULL object reference |
0 | 2223 } else { |
2224 __ pop(atos); // Get the object | |
2225 __ verify_oop(rax); | |
2226 __ push(atos); // Restore stack state | |
2227 } | |
2228 // rax,: object pointer or NULL | |
2229 // cache: cache entry pointer | |
2230 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), | |
2231 rax, cache); | |
2232 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2233 __ bind(L1); | |
2234 } | |
2235 } | |
2236 | |
2237 void TemplateTable::pop_and_check_object(Register r) { | |
2238 __ pop_ptr(r); | |
2239 __ null_check(r); // for field access must check obj. | |
2240 __ verify_oop(r); | |
2241 } | |
2242 | |
2243 void TemplateTable::getfield_or_static(int byte_no, bool is_static) { | |
2244 transition(vtos, vtos); | |
2245 | |
2246 const Register cache = rcx; | |
2247 const Register index = rdx; | |
2248 const Register obj = rcx; | |
2249 const Register off = rbx; | |
2250 const Register flags = rax; | |
2251 | |
1565 | 2252 resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2)); |
0 | 2253 jvmti_post_field_access(cache, index, is_static, false); |
2254 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2255 | |
2256 if (!is_static) pop_and_check_object(obj); | |
2257 | |
2258 const Address lo(obj, off, Address::times_1, 0*wordSize); | |
2259 const Address hi(obj, off, Address::times_1, 1*wordSize); | |
2260 | |
2261 Label Done, notByte, notInt, notShort, notChar, notLong, notFloat, notObj, notDouble; | |
2262 | |
2263 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2264 assert(btos == 0, "change code, btos != 0"); | |
2265 // btos | |
304 | 2266 __ andptr(flags, 0x0f); |
0 | 2267 __ jcc(Assembler::notZero, notByte); |
2268 | |
2269 __ load_signed_byte(rax, lo ); | |
2270 __ push(btos); | |
2271 // Rewrite bytecode to be faster | |
2272 if (!is_static) { | |
2273 patch_bytecode(Bytecodes::_fast_bgetfield, rcx, rbx); | |
2274 } | |
2275 __ jmp(Done); | |
2276 | |
2277 __ bind(notByte); | |
2278 // itos | |
2279 __ cmpl(flags, itos ); | |
2280 __ jcc(Assembler::notEqual, notInt); | |
2281 | |
2282 __ movl(rax, lo ); | |
2283 __ push(itos); | |
2284 // Rewrite bytecode to be faster | |
2285 if (!is_static) { | |
2286 patch_bytecode(Bytecodes::_fast_igetfield, rcx, rbx); | |
2287 } | |
2288 __ jmp(Done); | |
2289 | |
2290 __ bind(notInt); | |
2291 // atos | |
2292 __ cmpl(flags, atos ); | |
2293 __ jcc(Assembler::notEqual, notObj); | |
2294 | |
2295 __ movl(rax, lo ); | |
2296 __ push(atos); | |
2297 if (!is_static) { | |
2298 patch_bytecode(Bytecodes::_fast_agetfield, rcx, rbx); | |
2299 } | |
2300 __ jmp(Done); | |
2301 | |
2302 __ bind(notObj); | |
2303 // ctos | |
2304 __ cmpl(flags, ctos ); | |
2305 __ jcc(Assembler::notEqual, notChar); | |
2306 | |
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2307 __ load_unsigned_short(rax, lo ); |
0 | 2308 __ push(ctos); |
2309 if (!is_static) { | |
2310 patch_bytecode(Bytecodes::_fast_cgetfield, rcx, rbx); | |
2311 } | |
2312 __ jmp(Done); | |
2313 | |
2314 __ bind(notChar); | |
2315 // stos | |
2316 __ cmpl(flags, stos ); | |
2317 __ jcc(Assembler::notEqual, notShort); | |
2318 | |
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2319 __ load_signed_short(rax, lo ); |
0 | 2320 __ push(stos); |
2321 if (!is_static) { | |
2322 patch_bytecode(Bytecodes::_fast_sgetfield, rcx, rbx); | |
2323 } | |
2324 __ jmp(Done); | |
2325 | |
2326 __ bind(notShort); | |
2327 // ltos | |
2328 __ cmpl(flags, ltos ); | |
2329 __ jcc(Assembler::notEqual, notLong); | |
2330 | |
2331 // Generate code as if volatile. There just aren't enough registers to | |
2332 // save that information and this code is faster than the test. | |
2333 __ fild_d(lo); // Must load atomically | |
304 | 2334 __ subptr(rsp,2*wordSize); // Make space for store |
0 | 2335 __ fistp_d(Address(rsp,0)); |
304 | 2336 __ pop(rax); |
2337 __ pop(rdx); | |
0 | 2338 |
2339 __ push(ltos); | |
2340 // Don't rewrite to _fast_lgetfield for potential volatile case. | |
2341 __ jmp(Done); | |
2342 | |
2343 __ bind(notLong); | |
2344 // ftos | |
2345 __ cmpl(flags, ftos ); | |
2346 __ jcc(Assembler::notEqual, notFloat); | |
2347 | |
2348 __ fld_s(lo); | |
2349 __ push(ftos); | |
2350 if (!is_static) { | |
2351 patch_bytecode(Bytecodes::_fast_fgetfield, rcx, rbx); | |
2352 } | |
2353 __ jmp(Done); | |
2354 | |
2355 __ bind(notFloat); | |
2356 // dtos | |
2357 __ cmpl(flags, dtos ); | |
2358 __ jcc(Assembler::notEqual, notDouble); | |
2359 | |
2360 __ fld_d(lo); | |
2361 __ push(dtos); | |
2362 if (!is_static) { | |
2363 patch_bytecode(Bytecodes::_fast_dgetfield, rcx, rbx); | |
2364 } | |
2365 __ jmpb(Done); | |
2366 | |
2367 __ bind(notDouble); | |
2368 | |
2369 __ stop("Bad state"); | |
2370 | |
2371 __ bind(Done); | |
2372 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). | |
2373 // volatile_barrier( ); | |
2374 } | |
2375 | |
2376 | |
2377 void TemplateTable::getfield(int byte_no) { | |
2378 getfield_or_static(byte_no, false); | |
2379 } | |
2380 | |
2381 | |
2382 void TemplateTable::getstatic(int byte_no) { | |
2383 getfield_or_static(byte_no, true); | |
2384 } | |
2385 | |
2386 // The registers cache and index expected to be set before call. | |
2387 // The function may destroy various registers, just not the cache and index registers. | |
2388 void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) { | |
2389 | |
2390 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset(); | |
2391 | |
2392 if (JvmtiExport::can_post_field_modification()) { | |
2393 // Check to see if a field modification watch has been set before we take | |
2394 // the time to call into the VM. | |
2395 Label L1; | |
2396 assert_different_registers(cache, index, rax); | |
2397 __ mov32(rax, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
2398 __ testl(rax, rax); | |
2399 __ jcc(Assembler::zero, L1); | |
2400 | |
2401 // The cache and index registers have been already set. | |
2402 // This allows to eliminate this call but the cache and index | |
2403 // registers have to be correspondingly used after this line. | |
2404 __ get_cache_and_index_at_bcp(rax, rdx, 1); | |
2405 | |
2406 if (is_static) { | |
2407 // Life is simple. Null out the object pointer. | |
304 | 2408 __ xorptr(rbx, rbx); |
0 | 2409 } else { |
2410 // Life is harder. The stack holds the value on top, followed by the object. | |
2411 // We don't know the size of the value, though; it could be one or two words | |
2412 // depending on its type. As a result, we must find the type to determine where | |
2413 // the object is. | |
2414 Label two_word, valsize_known; | |
304 | 2415 __ movl(rcx, Address(rax, rdx, Address::times_ptr, in_bytes(cp_base_offset + |
0 | 2416 ConstantPoolCacheEntry::flags_offset()))); |
304 | 2417 __ mov(rbx, rsp); |
0 | 2418 __ shrl(rcx, ConstantPoolCacheEntry::tosBits); |
2419 // Make sure we don't need to mask rcx for tosBits after the above shift | |
2420 ConstantPoolCacheEntry::verify_tosBits(); | |
2421 __ cmpl(rcx, ltos); | |
2422 __ jccb(Assembler::equal, two_word); | |
2423 __ cmpl(rcx, dtos); | |
2424 __ jccb(Assembler::equal, two_word); | |
304 | 2425 __ addptr(rbx, Interpreter::expr_offset_in_bytes(1)); // one word jvalue (not ltos, dtos) |
0 | 2426 __ jmpb(valsize_known); |
2427 | |
2428 __ bind(two_word); | |
304 | 2429 __ addptr(rbx, Interpreter::expr_offset_in_bytes(2)); // two words jvalue |
0 | 2430 |
2431 __ bind(valsize_known); | |
2432 // setup object pointer | |
304 | 2433 __ movptr(rbx, Address(rbx, 0)); |
0 | 2434 } |
2435 // cache entry pointer | |
304 | 2436 __ addptr(rax, in_bytes(cp_base_offset)); |
0 | 2437 __ shll(rdx, LogBytesPerWord); |
304 | 2438 __ addptr(rax, rdx); |
0 | 2439 // object (tos) |
304 | 2440 __ mov(rcx, rsp); |
0 | 2441 // rbx,: object pointer set up above (NULL if static) |
2442 // rax,: cache entry pointer | |
2443 // rcx: jvalue object on the stack | |
2444 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), | |
2445 rbx, rax, rcx); | |
2446 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2447 __ bind(L1); | |
2448 } | |
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 | |
1565 | 2461 resolve_cache_and_index(byte_no, noreg, cache, index, sizeof(u2)); |
0 | 2462 jvmti_post_field_mod(cache, index, is_static); |
2463 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2464 | |
2465 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). | |
2466 // volatile_barrier( ); | |
2467 | |
2468 Label notVolatile, Done; | |
2469 __ movl(rdx, flags); | |
2470 __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2471 __ andl(rdx, 0x1); | |
2472 | |
2473 // field addresses | |
2474 const Address lo(obj, off, Address::times_1, 0*wordSize); | |
2475 const Address hi(obj, off, Address::times_1, 1*wordSize); | |
2476 | |
2477 Label notByte, notInt, notShort, notChar, notLong, notFloat, notObj, notDouble; | |
2478 | |
2479 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2480 assert(btos == 0, "change code, btos != 0"); | |
2481 __ andl(flags, 0x0f); | |
2482 __ jcc(Assembler::notZero, notByte); | |
2483 | |
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2484 // btos |
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2485 { |
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2486 __ pop(btos); |
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2487 if (!is_static) pop_and_check_object(obj); |
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2488 __ movb(lo, rax); |
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2489 if (!is_static) { |
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2490 patch_bytecode(Bytecodes::_fast_bputfield, rcx, rbx, true, byte_no); |
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2491 } |
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2492 __ jmp(Done); |
0 | 2493 } |
2494 | |
2495 __ bind(notByte); | |
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2496 __ cmpl(flags, itos); |
0 | 2497 __ jcc(Assembler::notEqual, notInt); |
2498 | |
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2499 // itos |
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2500 { |
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2501 __ pop(itos); |
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2502 if (!is_static) pop_and_check_object(obj); |
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2503 __ movl(lo, rax); |
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2504 if (!is_static) { |
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2505 patch_bytecode(Bytecodes::_fast_iputfield, rcx, rbx, true, byte_no); |
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2506 } |
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2507 __ jmp(Done); |
0 | 2508 } |
2509 | |
2510 __ bind(notInt); | |
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2511 __ cmpl(flags, atos); |
0 | 2512 __ jcc(Assembler::notEqual, notObj); |
2513 | |
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2514 // atos |
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2515 { |
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2516 __ pop(atos); |
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2517 if (!is_static) pop_and_check_object(obj); |
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2518 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
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2519 if (!is_static) { |
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2520 patch_bytecode(Bytecodes::_fast_aputfield, rcx, rbx, true, byte_no); |
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2521 } |
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2522 __ jmp(Done); |
0 | 2523 } |
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2524 |
0 | 2525 __ bind(notObj); |
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2526 __ cmpl(flags, ctos); |
0 | 2527 __ jcc(Assembler::notEqual, notChar); |
2528 | |
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2529 // ctos |
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2530 { |
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2531 __ pop(ctos); |
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2532 if (!is_static) pop_and_check_object(obj); |
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2533 __ movw(lo, rax); |
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2534 if (!is_static) { |
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2535 patch_bytecode(Bytecodes::_fast_cputfield, rcx, rbx, true, byte_no); |
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2536 } |
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2537 __ jmp(Done); |
0 | 2538 } |
2539 | |
2540 __ bind(notChar); | |
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2541 __ cmpl(flags, stos); |
0 | 2542 __ jcc(Assembler::notEqual, notShort); |
2543 | |
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2544 // stos |
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2545 { |
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2546 __ pop(stos); |
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2547 if (!is_static) pop_and_check_object(obj); |
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2548 __ movw(lo, rax); |
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2549 if (!is_static) { |
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2550 patch_bytecode(Bytecodes::_fast_sputfield, rcx, rbx, true, byte_no); |
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2551 } |
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2552 __ jmp(Done); |
0 | 2553 } |
2554 | |
2555 __ bind(notShort); | |
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2556 __ cmpl(flags, ltos); |
0 | 2557 __ jcc(Assembler::notEqual, notLong); |
2558 | |
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2559 // ltos |
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2560 { |
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2561 Label notVolatileLong; |
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2562 __ testl(rdx, rdx); |
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2563 __ jcc(Assembler::zero, notVolatileLong); |
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2564 |
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2565 __ pop(ltos); // overwrites rdx, do this after testing volatile. |
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2566 if (!is_static) pop_and_check_object(obj); |
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2567 |
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2568 // Replace with real volatile test |
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2569 __ push(rdx); |
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2570 __ push(rax); // Must update atomically with FIST |
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2571 __ fild_d(Address(rsp,0)); // So load into FPU register |
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2572 __ fistp_d(lo); // and put into memory atomically |
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2573 __ addptr(rsp, 2*wordSize); |
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2574 // volatile_barrier(); |
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2575 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | |
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2576 Assembler::StoreStore)); |
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2577 // Don't rewrite volatile version |
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2578 __ jmp(notVolatile); |
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2579 |
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2580 __ bind(notVolatileLong); |
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2581 |
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2582 __ pop(ltos); // overwrites rdx |
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2583 if (!is_static) pop_and_check_object(obj); |
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2584 NOT_LP64(__ movptr(hi, rdx)); |
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2585 __ movptr(lo, rax); |
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2586 if (!is_static) { |
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2587 patch_bytecode(Bytecodes::_fast_lputfield, rcx, rbx, true, byte_no); |
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2588 } |
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2589 __ jmp(notVolatile); |
0 | 2590 } |
2591 | |
2592 __ bind(notLong); | |
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2593 __ cmpl(flags, ftos); |
0 | 2594 __ jcc(Assembler::notEqual, notFloat); |
2595 | |
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2596 // ftos |
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2597 { |
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2598 __ pop(ftos); |
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2599 if (!is_static) pop_and_check_object(obj); |
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2600 __ fstp_s(lo); |
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2601 if (!is_static) { |
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2602 patch_bytecode(Bytecodes::_fast_fputfield, rcx, rbx, true, byte_no); |
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2603 } |
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2604 __ jmp(Done); |
0 | 2605 } |
2606 | |
2607 __ bind(notFloat); | |
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2608 #ifdef ASSERT |
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2609 __ cmpl(flags, dtos); |
0 | 2610 __ jcc(Assembler::notEqual, notDouble); |
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2611 #endif |
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2612 |
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2613 // dtos |
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2614 { |
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2615 __ pop(dtos); |
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2616 if (!is_static) pop_and_check_object(obj); |
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2617 __ fstp_d(lo); |
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2618 if (!is_static) { |
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2619 patch_bytecode(Bytecodes::_fast_dputfield, rcx, rbx, true, byte_no); |
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2620 } |
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2621 __ jmp(Done); |
0 | 2622 } |
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2623 |
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2624 #ifdef ASSERT |
0 | 2625 __ bind(notDouble); |
2626 __ stop("Bad state"); | |
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2627 #endif |
0 | 2628 |
2629 __ bind(Done); | |
2630 | |
2631 // Check for volatile store | |
2632 __ testl(rdx, rdx); | |
2633 __ jcc(Assembler::zero, notVolatile); | |
304 | 2634 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | |
2635 Assembler::StoreStore)); | |
0 | 2636 __ bind(notVolatile); |
2637 } | |
2638 | |
2639 | |
2640 void TemplateTable::putfield(int byte_no) { | |
2641 putfield_or_static(byte_no, false); | |
2642 } | |
2643 | |
2644 | |
2645 void TemplateTable::putstatic(int byte_no) { | |
2646 putfield_or_static(byte_no, true); | |
2647 } | |
2648 | |
2649 void TemplateTable::jvmti_post_fast_field_mod() { | |
2650 if (JvmtiExport::can_post_field_modification()) { | |
2651 // Check to see if a field modification watch has been set before we take | |
2652 // the time to call into the VM. | |
2653 Label L2; | |
5995
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2654 __ mov32(rcx, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); |
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2655 __ testl(rcx,rcx); |
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2656 __ jcc(Assembler::zero, L2); |
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2657 __ pop_ptr(rbx); // copy the object pointer from tos |
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2658 __ verify_oop(rbx); |
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2659 __ push_ptr(rbx); // put the object pointer back on tos |
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2660 |
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2661 // Save tos values before call_VM() clobbers them. Since we have |
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2662 // to do it for every data type, we use the saved values as the |
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2663 // jvalue object. |
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2664 switch (bytecode()) { // load values into the jvalue object |
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2665 case Bytecodes::_fast_aputfield: __ push_ptr(rax); break; |
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2666 case Bytecodes::_fast_bputfield: // fall through |
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2667 case Bytecodes::_fast_sputfield: // fall through |
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2668 case Bytecodes::_fast_cputfield: // fall through |
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2669 case Bytecodes::_fast_iputfield: __ push_i(rax); break; |
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2670 case Bytecodes::_fast_dputfield: __ push_d(); break; |
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2671 case Bytecodes::_fast_fputfield: __ push_f(); break; |
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2672 case Bytecodes::_fast_lputfield: __ push_l(rax); break; |
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2673 |
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2674 default: |
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2675 ShouldNotReachHere(); |
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2676 } |
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2677 __ mov(rcx, rsp); // points to jvalue on the stack |
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2678 // access constant pool cache entry |
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2679 __ get_cache_entry_pointer_at_bcp(rax, rdx, 1); |
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2680 __ verify_oop(rbx); |
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2681 // rbx,: object pointer copied above |
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2682 // rax,: cache entry pointer |
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2683 // rcx: jvalue object on the stack |
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2684 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), rbx, rax, rcx); |
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2685 |
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2686 switch (bytecode()) { // restore tos values |
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2687 case Bytecodes::_fast_aputfield: __ pop_ptr(rax); break; |
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2688 case Bytecodes::_fast_bputfield: // fall through |
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2689 case Bytecodes::_fast_sputfield: // fall through |
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2690 case Bytecodes::_fast_cputfield: // fall through |
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2691 case Bytecodes::_fast_iputfield: __ pop_i(rax); break; |
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2692 case Bytecodes::_fast_dputfield: __ pop_d(); break; |
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2693 case Bytecodes::_fast_fputfield: __ pop_f(); break; |
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2694 case Bytecodes::_fast_lputfield: __ pop_l(rax); break; |
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2695 } |
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2696 __ bind(L2); |
0 | 2697 } |
2698 } | |
2699 | |
2700 void TemplateTable::fast_storefield(TosState state) { | |
2701 transition(state, vtos); | |
2702 | |
2703 ByteSize base = constantPoolCacheOopDesc::base_offset(); | |
2704 | |
2705 jvmti_post_fast_field_mod(); | |
2706 | |
2707 // access constant pool cache | |
2708 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2709 | |
2710 // test for volatile with rdx but rdx is tos register for lputfield. | |
304 | 2711 if (bytecode() == Bytecodes::_fast_lputfield) __ push(rdx); |
2712 __ movl(rdx, Address(rcx, rbx, Address::times_ptr, in_bytes(base + | |
0 | 2713 ConstantPoolCacheEntry::flags_offset()))); |
2714 | |
2715 // replace index with field offset from cache entry | |
304 | 2716 __ movptr(rbx, Address(rcx, rbx, Address::times_ptr, in_bytes(base + ConstantPoolCacheEntry::f2_offset()))); |
0 | 2717 |
2718 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). | |
2719 // volatile_barrier( ); | |
2720 | |
2721 Label notVolatile, Done; | |
2722 __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
2723 __ andl(rdx, 0x1); | |
2724 // Check for volatile store | |
2725 __ testl(rdx, rdx); | |
2726 __ jcc(Assembler::zero, notVolatile); | |
2727 | |
304 | 2728 if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx); |
0 | 2729 |
2730 // Get object from stack | |
2731 pop_and_check_object(rcx); | |
2732 | |
2733 // field addresses | |
2734 const Address lo(rcx, rbx, Address::times_1, 0*wordSize); | |
2735 const Address hi(rcx, rbx, Address::times_1, 1*wordSize); | |
2736 | |
2737 // access field | |
2738 switch (bytecode()) { | |
2739 case Bytecodes::_fast_bputfield: __ movb(lo, rax); break; | |
2740 case Bytecodes::_fast_sputfield: // fall through | |
2741 case Bytecodes::_fast_cputfield: __ movw(lo, rax); break; | |
2742 case Bytecodes::_fast_iputfield: __ movl(lo, rax); break; | |
304 | 2743 case Bytecodes::_fast_lputfield: |
2744 NOT_LP64(__ movptr(hi, rdx)); | |
2745 __ movptr(lo, rax); | |
2746 break; | |
0 | 2747 case Bytecodes::_fast_fputfield: __ fstp_s(lo); break; |
2748 case Bytecodes::_fast_dputfield: __ fstp_d(lo); break; | |
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2749 case Bytecodes::_fast_aputfield: { |
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2750 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
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2751 break; |
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2752 } |
0 | 2753 default: |
2754 ShouldNotReachHere(); | |
2755 } | |
2756 | |
2757 Label done; | |
304 | 2758 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | |
2759 Assembler::StoreStore)); | |
342
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2760 // Barriers are so large that short branch doesn't reach! |
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2761 __ jmp(done); |
0 | 2762 |
2763 // Same code as above, but don't need rdx to test for volatile. | |
2764 __ bind(notVolatile); | |
2765 | |
304 | 2766 if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx); |
0 | 2767 |
2768 // Get object from stack | |
2769 pop_and_check_object(rcx); | |
2770 | |
2771 // access field | |
2772 switch (bytecode()) { | |
2773 case Bytecodes::_fast_bputfield: __ movb(lo, rax); break; | |
2774 case Bytecodes::_fast_sputfield: // fall through | |
2775 case Bytecodes::_fast_cputfield: __ movw(lo, rax); break; | |
2776 case Bytecodes::_fast_iputfield: __ movl(lo, rax); break; | |
304 | 2777 case Bytecodes::_fast_lputfield: |
2778 NOT_LP64(__ movptr(hi, rdx)); | |
2779 __ movptr(lo, rax); | |
2780 break; | |
0 | 2781 case Bytecodes::_fast_fputfield: __ fstp_s(lo); break; |
2782 case Bytecodes::_fast_dputfield: __ fstp_d(lo); break; | |
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2783 case Bytecodes::_fast_aputfield: { |
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2784 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
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2785 break; |
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2786 } |
0 | 2787 default: |
2788 ShouldNotReachHere(); | |
2789 } | |
2790 __ bind(done); | |
2791 } | |
2792 | |
2793 | |
2794 void TemplateTable::fast_accessfield(TosState state) { | |
2795 transition(atos, state); | |
2796 | |
2797 // do the JVMTI work here to avoid disturbing the register state below | |
2798 if (JvmtiExport::can_post_field_access()) { | |
2799 // Check to see if a field access watch has been set before we take | |
2800 // the time to call into the VM. | |
2801 Label L1; | |
2802 __ mov32(rcx, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2803 __ testl(rcx,rcx); | |
2804 __ jcc(Assembler::zero, L1); | |
2805 // access constant pool cache entry | |
2806 __ get_cache_entry_pointer_at_bcp(rcx, rdx, 1); | |
2807 __ push_ptr(rax); // save object pointer before call_VM() clobbers it | |
2808 __ verify_oop(rax); | |
2809 // rax,: object pointer copied above | |
2810 // rcx: cache entry pointer | |
2811 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), rax, rcx); | |
2812 __ pop_ptr(rax); // restore object pointer | |
2813 __ bind(L1); | |
2814 } | |
2815 | |
2816 // access constant pool cache | |
2817 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2818 // replace index with field offset from cache entry | |
304 | 2819 __ movptr(rbx, Address(rcx, |
2820 rbx, | |
2821 Address::times_ptr, | |
2822 in_bytes(constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2823 |
2824 | |
2825 // rax,: object | |
2826 __ verify_oop(rax); | |
2827 __ null_check(rax); | |
2828 // field addresses | |
2829 const Address lo = Address(rax, rbx, Address::times_1, 0*wordSize); | |
2830 const Address hi = Address(rax, rbx, Address::times_1, 1*wordSize); | |
2831 | |
2832 // access field | |
2833 switch (bytecode()) { | |
304 | 2834 case Bytecodes::_fast_bgetfield: __ movsbl(rax, lo ); break; |
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2835 case Bytecodes::_fast_sgetfield: __ load_signed_short(rax, lo ); break; |
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2836 case Bytecodes::_fast_cgetfield: __ load_unsigned_short(rax, lo ); break; |
0 | 2837 case Bytecodes::_fast_igetfield: __ movl(rax, lo); break; |
2838 case Bytecodes::_fast_lgetfield: __ stop("should not be rewritten"); break; | |
2839 case Bytecodes::_fast_fgetfield: __ fld_s(lo); break; | |
2840 case Bytecodes::_fast_dgetfield: __ fld_d(lo); break; | |
304 | 2841 case Bytecodes::_fast_agetfield: __ movptr(rax, lo); __ verify_oop(rax); break; |
0 | 2842 default: |
2843 ShouldNotReachHere(); | |
2844 } | |
2845 | |
2846 // Doug Lea believes this is not needed with current Sparcs(TSO) and Intel(PSO) | |
2847 // volatile_barrier( ); | |
2848 } | |
2849 | |
2850 void TemplateTable::fast_xaccess(TosState state) { | |
2851 transition(vtos, state); | |
2852 // get receiver | |
304 | 2853 __ movptr(rax, aaddress(0)); |
0 | 2854 // access constant pool cache |
2855 __ get_cache_and_index_at_bcp(rcx, rdx, 2); | |
304 | 2856 __ movptr(rbx, Address(rcx, |
2857 rdx, | |
2858 Address::times_ptr, | |
2859 in_bytes(constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2860 // make sure exception is reported in correct bcp range (getfield is next instruction) |
2861 __ increment(rsi); | |
2862 __ null_check(rax); | |
2863 const Address lo = Address(rax, rbx, Address::times_1, 0*wordSize); | |
2864 if (state == itos) { | |
2865 __ movl(rax, lo); | |
2866 } else if (state == atos) { | |
304 | 2867 __ movptr(rax, lo); |
0 | 2868 __ verify_oop(rax); |
2869 } else if (state == ftos) { | |
2870 __ fld_s(lo); | |
2871 } else { | |
2872 ShouldNotReachHere(); | |
2873 } | |
2874 __ decrement(rsi); | |
2875 } | |
2876 | |
2877 | |
2878 | |
2879 //---------------------------------------------------------------------------------------------------- | |
2880 // Calls | |
2881 | |
2882 void TemplateTable::count_calls(Register method, Register temp) { | |
2883 // implemented elsewhere | |
2884 ShouldNotReachHere(); | |
2885 } | |
2886 | |
2887 | |
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2888 void TemplateTable::prepare_invoke(Register method, Register index, int byte_no) { |
0 | 2889 // determine flags |
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2890 Bytecodes::Code code = bytecode(); |
0 | 2891 const bool is_invokeinterface = code == Bytecodes::_invokeinterface; |
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2892 const bool is_invokedynamic = code == Bytecodes::_invokedynamic; |
0 | 2893 const bool is_invokevirtual = code == Bytecodes::_invokevirtual; |
2894 const bool is_invokespecial = code == Bytecodes::_invokespecial; | |
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2895 const bool load_receiver = (code != Bytecodes::_invokestatic && code != Bytecodes::_invokedynamic); |
0 | 2896 const bool receiver_null_check = is_invokespecial; |
2897 const bool save_flags = is_invokeinterface || is_invokevirtual; | |
2898 // setup registers & access constant pool cache | |
2899 const Register recv = rcx; | |
2900 const Register flags = rdx; | |
2901 assert_different_registers(method, index, recv, flags); | |
2902 | |
2903 // save 'interpreter return address' | |
2904 __ save_bcp(); | |
2905 | |
1565 | 2906 load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual, false, is_invokedynamic); |
0 | 2907 |
2908 // load receiver if needed (note: no return address pushed yet) | |
2909 if (load_receiver) { | |
1565 | 2910 assert(!is_invokedynamic, ""); |
0 | 2911 __ movl(recv, flags); |
2912 __ andl(recv, 0xFF); | |
2913 // recv count is 0 based? | |
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2914 Address recv_addr(rsp, recv, Interpreter::stackElementScale(), -Interpreter::expr_offset_in_bytes(1)); |
1304 | 2915 __ movptr(recv, recv_addr); |
2916 __ verify_oop(recv); | |
0 | 2917 } |
2918 | |
2919 // do null check if needed | |
2920 if (receiver_null_check) { | |
2921 __ null_check(recv); | |
2922 } | |
2923 | |
2924 if (save_flags) { | |
304 | 2925 __ mov(rsi, flags); |
0 | 2926 } |
2927 | |
2928 // compute return type | |
2929 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
2930 // Make sure we don't need to mask flags for tosBits after the above shift | |
2931 ConstantPoolCacheEntry::verify_tosBits(); | |
2932 // load return address | |
304 | 2933 { |
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2934 address table_addr; |
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2935 if (is_invokeinterface || is_invokedynamic) |
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2936 table_addr = (address)Interpreter::return_5_addrs_by_index_table(); |
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2937 else |
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2938 table_addr = (address)Interpreter::return_3_addrs_by_index_table(); |
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2939 ExternalAddress table(table_addr); |
304 | 2940 __ movptr(flags, ArrayAddress(table, Address(noreg, flags, Address::times_ptr))); |
0 | 2941 } |
2942 | |
2943 // push return address | |
304 | 2944 __ push(flags); |
0 | 2945 |
2946 // Restore flag value from the constant pool cache, and restore rsi | |
2947 // for later null checks. rsi is the bytecode pointer | |
2948 if (save_flags) { | |
304 | 2949 __ mov(flags, rsi); |
0 | 2950 __ restore_bcp(); |
2951 } | |
2952 } | |
2953 | |
2954 | |
2955 void TemplateTable::invokevirtual_helper(Register index, Register recv, | |
2956 Register flags) { | |
2957 | |
2958 // Uses temporary registers rax, rdx | |
2959 assert_different_registers(index, recv, rax, rdx); | |
2960 | |
2961 // Test for an invoke of a final method | |
2962 Label notFinal; | |
2963 __ movl(rax, flags); | |
2964 __ andl(rax, (1 << ConstantPoolCacheEntry::vfinalMethod)); | |
2965 __ jcc(Assembler::zero, notFinal); | |
2966 | |
2967 Register method = index; // method must be rbx, | |
2968 assert(method == rbx, "methodOop must be rbx, for interpreter calling convention"); | |
2969 | |
2970 // do the call - the index is actually the method to call | |
2971 __ verify_oop(method); | |
2972 | |
2973 // It's final, need a null check here! | |
2974 __ null_check(recv); | |
2975 | |
2976 // profile this call | |
2977 __ profile_final_call(rax); | |
2978 | |
2979 __ jump_from_interpreted(method, rax); | |
2980 | |
2981 __ bind(notFinal); | |
2982 | |
2983 // get receiver klass | |
2984 __ null_check(recv, oopDesc::klass_offset_in_bytes()); | |
2985 // Keep recv in rcx for callee expects it there | |
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2986 __ load_klass(rax, recv); |
0 | 2987 __ verify_oop(rax); |
2988 | |
2989 // profile this call | |
2990 __ profile_virtual_call(rax, rdi, rdx); | |
2991 | |
2992 // get target methodOop & entry point | |
2993 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
2994 assert(vtableEntry::size() * wordSize == 4, "adjust the scaling in the code below"); | |
304 | 2995 __ movptr(method, Address(rax, index, Address::times_ptr, base + vtableEntry::method_offset_in_bytes())); |
0 | 2996 __ jump_from_interpreted(method, rdx); |
2997 } | |
2998 | |
2999 | |
3000 void TemplateTable::invokevirtual(int byte_no) { | |
3001 transition(vtos, vtos); | |
1565 | 3002 assert(byte_no == f2_byte, "use this argument"); |
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3003 prepare_invoke(rbx, noreg, byte_no); |
0 | 3004 |
3005 // rbx,: index | |
3006 // rcx: receiver | |
3007 // rdx: flags | |
3008 | |
3009 invokevirtual_helper(rbx, rcx, rdx); | |
3010 } | |
3011 | |
3012 | |
3013 void TemplateTable::invokespecial(int byte_no) { | |
3014 transition(vtos, vtos); | |
1565 | 3015 assert(byte_no == f1_byte, "use this argument"); |
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3016 prepare_invoke(rbx, noreg, byte_no); |
0 | 3017 // do the call |
3018 __ verify_oop(rbx); | |
3019 __ profile_call(rax); | |
3020 __ jump_from_interpreted(rbx, rax); | |
3021 } | |
3022 | |
3023 | |
3024 void TemplateTable::invokestatic(int byte_no) { | |
3025 transition(vtos, vtos); | |
1565 | 3026 assert(byte_no == f1_byte, "use this argument"); |
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3027 prepare_invoke(rbx, noreg, byte_no); |
0 | 3028 // do the call |
3029 __ verify_oop(rbx); | |
3030 __ profile_call(rax); | |
3031 __ jump_from_interpreted(rbx, rax); | |
3032 } | |
3033 | |
3034 | |
3035 void TemplateTable::fast_invokevfinal(int byte_no) { | |
3036 transition(vtos, vtos); | |
1565 | 3037 assert(byte_no == f2_byte, "use this argument"); |
0 | 3038 __ stop("fast_invokevfinal not used on x86"); |
3039 } | |
3040 | |
3041 | |
3042 void TemplateTable::invokeinterface(int byte_no) { | |
3043 transition(vtos, vtos); | |
1565 | 3044 assert(byte_no == f1_byte, "use this argument"); |
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3045 prepare_invoke(rax, rbx, byte_no); |
0 | 3046 |
3047 // rax,: Interface | |
3048 // rbx,: index | |
3049 // rcx: receiver | |
3050 // rdx: flags | |
3051 | |
3052 // Special case of invokeinterface called for virtual method of | |
3053 // java.lang.Object. See cpCacheOop.cpp for details. | |
3054 // This code isn't produced by javac, but could be produced by | |
3055 // another compliant java compiler. | |
3056 Label notMethod; | |
3057 __ movl(rdi, rdx); | |
3058 __ andl(rdi, (1 << ConstantPoolCacheEntry::methodInterface)); | |
3059 __ jcc(Assembler::zero, notMethod); | |
3060 | |
3061 invokevirtual_helper(rbx, rcx, rdx); | |
3062 __ bind(notMethod); | |
3063 | |
3064 // Get receiver klass into rdx - also a null check | |
3065 __ restore_locals(); // restore rdi | |
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3066 __ load_klass(rdx, rcx); |
0 | 3067 __ verify_oop(rdx); |
3068 | |
3069 // profile this call | |
3070 __ profile_virtual_call(rdx, rsi, rdi); | |
3071 | |
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3072 Label no_such_interface, no_such_method; |
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3073 |
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3074 __ lookup_interface_method(// inputs: rec. class, interface, itable index |
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3075 rdx, rax, rbx, |
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3076 // outputs: method, scan temp. reg |
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3077 rbx, rsi, |
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3078 no_such_interface); |
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|
3079 |
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3080 // rbx,: methodOop to call |
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3081 // rcx: receiver |
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3082 // Check for abstract method error |
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|
3083 // Note: This should be done more efficiently via a throw_abstract_method_error |
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3084 // interpreter entry point and a conditional jump to it in case of a null |
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|
3085 // method. |
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|
3086 __ testptr(rbx, rbx); |
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3087 __ jcc(Assembler::zero, no_such_method); |
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3088 |
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|
3089 // do the call |
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3090 // rcx: receiver |
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3091 // rbx,: methodOop |
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3092 __ jump_from_interpreted(rbx, rdx); |
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3093 __ should_not_reach_here(); |
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|
3094 |
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|
3095 // exception handling code follows... |
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3096 // note: must restore interpreter registers to canonical |
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3097 // state for exception handling to work correctly! |
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|
3098 |
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|
3099 __ bind(no_such_method); |
0 | 3100 // throw exception |
623
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3101 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
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3102 __ restore_bcp(); // rsi must be correct for exception handler (was destroyed) |
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3103 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
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3104 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError)); |
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3105 // the call_VM checks for exception, so we should never return here. |
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3106 __ should_not_reach_here(); |
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3107 |
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3108 __ bind(no_such_interface); |
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3109 // throw exception |
304 | 3110 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
0 | 3111 __ restore_bcp(); // rsi must be correct for exception handler (was destroyed) |
3112 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) | |
3113 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
3114 InterpreterRuntime::throw_IncompatibleClassChangeError)); | |
3115 // the call_VM checks for exception, so we should never return here. | |
3116 __ should_not_reach_here(); | |
3117 } | |
3118 | |
726
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6655646: dynamic languages need dynamically linked call sites
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|
3119 void TemplateTable::invokedynamic(int byte_no) { |
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|
3120 transition(vtos, vtos); |
3279
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3121 assert(byte_no == f1_oop, "use this argument"); |
726
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|
3122 |
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|
3123 if (!EnableInvokeDynamic) { |
be93aad57795
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|
3124 // We should not encounter this bytecode if !EnableInvokeDynamic. |
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3125 // The verifier will stop it. However, if we get past the verifier, |
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3126 // this will stop the thread in a reasonable way, without crashing the JVM. |
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3127 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
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3128 InterpreterRuntime::throw_IncompatibleClassChangeError)); |
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|
3129 // the call_VM checks for exception, so we should never return here. |
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|
3130 __ should_not_reach_here(); |
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|
3131 return; |
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|
3132 } |
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|
3133 |
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3134 prepare_invoke(rax, rbx, byte_no); |
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|
3135 |
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3136 // rax: CallSite object (f1) |
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3137 // rbx: unused (f2) |
1846 | 3138 // rcx: receiver address |
726
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|
3139 // rdx: flags (unused) |
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|
3140 |
1846 | 3141 Register rax_callsite = rax; |
3142 Register rcx_method_handle = rcx; | |
3143 | |
3279
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3144 // %%% should make a type profile for any invokedynamic that takes a ref argument |
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|
3145 // profile this call |
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|
3146 __ profile_call(rsi); |
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|
3147 |
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3148 __ verify_oop(rax_callsite); |
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|
3149 __ load_heap_oop(rcx_method_handle, Address(rax_callsite, __ delayed_value(java_lang_invoke_CallSite::target_offset_in_bytes, rdx))); |
1846 | 3150 __ null_check(rcx_method_handle); |
3279
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3151 __ verify_oop(rcx_method_handle); |
726
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3152 __ prepare_to_jump_from_interpreted(); |
1846 | 3153 __ jump_to_method_handle_entry(rcx_method_handle, rdx); |
726
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|
3154 } |
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|
3155 |
0 | 3156 //---------------------------------------------------------------------------------------------------- |
3157 // Allocation | |
3158 | |
3159 void TemplateTable::_new() { | |
3160 transition(vtos, atos); | |
3161 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3162 Label slow_case; | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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1602
diff
changeset
|
3163 Label slow_case_no_pop; |
0 | 3164 Label done; |
3165 Label initialize_header; | |
3166 Label initialize_object; // including clearing the fields | |
3167 Label allocate_shared; | |
3168 | |
3169 __ get_cpool_and_tags(rcx, rax); | |
1681
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|
3170 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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|
3171 // Make sure the class we're about to instantiate has been resolved. |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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|
3172 // This is done before loading instanceKlass to be consistent with the order |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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|
3173 // how Constant Pool is updated (see constantPoolOopDesc::klass_at_put) |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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|
3174 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; |
126ea7725993
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bobv
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|
3175 __ cmpb(Address(rax, rdx, Address::times_1, tags_offset), JVM_CONSTANT_Class); |
126ea7725993
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bobv
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|
3176 __ jcc(Assembler::notEqual, slow_case_no_pop); |
126ea7725993
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|
3177 |
0 | 3178 // get instanceKlass |
304 | 3179 __ movptr(rcx, Address(rcx, rdx, Address::times_ptr, sizeof(constantPoolOopDesc))); |
3180 __ push(rcx); // save the contexts of klass for initializing the header | |
0 | 3181 |
3182 // make sure klass is initialized & doesn't have finalizer | |
3183 // make sure klass is fully initialized | |
4771 | 3184 __ cmpb(Address(rcx, instanceKlass::init_state_offset()), instanceKlass::fully_initialized); |
0 | 3185 __ jcc(Assembler::notEqual, slow_case); |
3186 | |
3187 // get instance_size in instanceKlass (scaled to a count of bytes) | |
4762
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|
3188 __ movl(rdx, Address(rcx, Klass::layout_helper_offset())); |
0 | 3189 // test to see if it has a finalizer or is malformed in some way |
3190 __ testl(rdx, Klass::_lh_instance_slow_path_bit); | |
3191 __ jcc(Assembler::notZero, slow_case); | |
3192 | |
3193 // | |
3194 // Allocate the instance | |
3195 // 1) Try to allocate in the TLAB | |
3196 // 2) if fail and the object is large allocate in the shared Eden | |
3197 // 3) if the above fails (or is not applicable), go to a slow case | |
3198 // (creates a new TLAB, etc.) | |
3199 | |
3200 const bool allow_shared_alloc = | |
3201 Universe::heap()->supports_inline_contig_alloc() && !CMSIncrementalMode; | |
3202 | |
2100
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|
3203 const Register thread = rcx; |
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|
3204 if (UseTLAB || allow_shared_alloc) { |
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|
3205 __ get_thread(thread); |
b1a2afa37ec4
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|
3206 } |
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|
3207 |
0 | 3208 if (UseTLAB) { |
304 | 3209 __ movptr(rax, Address(thread, in_bytes(JavaThread::tlab_top_offset()))); |
3210 __ lea(rbx, Address(rax, rdx, Address::times_1)); | |
3211 __ cmpptr(rbx, Address(thread, in_bytes(JavaThread::tlab_end_offset()))); | |
0 | 3212 __ jcc(Assembler::above, allow_shared_alloc ? allocate_shared : slow_case); |
304 | 3213 __ movptr(Address(thread, in_bytes(JavaThread::tlab_top_offset())), rbx); |
0 | 3214 if (ZeroTLAB) { |
3215 // the fields have been already cleared | |
3216 __ jmp(initialize_header); | |
3217 } else { | |
3218 // initialize both the header and fields | |
3219 __ jmp(initialize_object); | |
3220 } | |
3221 } | |
3222 | |
3223 // Allocation in the shared Eden, if allowed. | |
3224 // | |
3225 // rdx: instance size in bytes | |
3226 if (allow_shared_alloc) { | |
3227 __ bind(allocate_shared); | |
3228 | |
342
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6711316: Open source the Garbage-First garbage collector
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diff
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|
3229 ExternalAddress heap_top((address)Universe::heap()->top_addr()); |
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|
3230 |
0 | 3231 Label retry; |
3232 __ bind(retry); | |
304 | 3233 __ movptr(rax, heap_top); |
3234 __ lea(rbx, Address(rax, rdx, Address::times_1)); | |
3235 __ cmpptr(rbx, ExternalAddress((address)Universe::heap()->end_addr())); | |
0 | 3236 __ jcc(Assembler::above, slow_case); |
3237 | |
3238 // Compare rax, with the top addr, and if still equal, store the new | |
3239 // top addr in rbx, at the address of the top addr pointer. Sets ZF if was | |
3240 // equal, and clears it otherwise. Use lock prefix for atomicity on MPs. | |
3241 // | |
3242 // rax,: object begin | |
3243 // rbx,: object end | |
3244 // rdx: instance size in bytes | |
304 | 3245 __ locked_cmpxchgptr(rbx, heap_top); |
0 | 3246 |
3247 // if someone beat us on the allocation, try again, otherwise continue | |
3248 __ jcc(Assembler::notEqual, retry); | |
2100
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|
3249 |
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|
3250 __ incr_allocated_bytes(thread, rdx, 0); |
0 | 3251 } |
3252 | |
3253 if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) { | |
3254 // The object is initialized before the header. If the object size is | |
3255 // zero, go directly to the header initialization. | |
3256 __ bind(initialize_object); | |
3257 __ decrement(rdx, sizeof(oopDesc)); | |
3258 __ jcc(Assembler::zero, initialize_header); | |
3259 | |
2100
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|
3260 // Initialize topmost object field, divide rdx by 8, check if odd and |
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|
3261 // test if zero. |
0 | 3262 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) |
3263 __ shrl(rdx, LogBytesPerLong); // divide by 2*oopSize and set carry flag if odd | |
3264 | |
2100
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|
3265 // rdx must have been multiple of 8 |
0 | 3266 #ifdef ASSERT |
3267 // make sure rdx was multiple of 8 | |
3268 Label L; | |
3269 // Ignore partial flag stall after shrl() since it is debug VM | |
3270 __ jccb(Assembler::carryClear, L); | |
3271 __ stop("object size is not multiple of 2 - adjust this code"); | |
3272 __ bind(L); | |
3273 // rdx must be > 0, no extra check needed here | |
3274 #endif | |
3275 | |
3276 // initialize remaining object fields: rdx was a multiple of 8 | |
3277 { Label loop; | |
3278 __ bind(loop); | |
304 | 3279 __ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 1*oopSize), rcx); |
3280 NOT_LP64(__ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 2*oopSize), rcx)); | |
0 | 3281 __ decrement(rdx); |
3282 __ jcc(Assembler::notZero, loop); | |
3283 } | |
3284 | |
3285 // initialize object header only. | |
3286 __ bind(initialize_header); | |
3287 if (UseBiasedLocking) { | |
304 | 3288 __ pop(rcx); // get saved klass back in the register. |
4762
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|
3289 __ movptr(rbx, Address(rcx, Klass::prototype_header_offset())); |
304 | 3290 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()), rbx); |
0 | 3291 } else { |
304 | 3292 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()), |
3293 (int32_t)markOopDesc::prototype()); // header | |
3294 __ pop(rcx); // get saved klass back in the register. | |
0 | 3295 } |
3275
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|
3296 __ store_klass(rax, rcx); // klass |
0 | 3297 |
3298 { | |
3299 SkipIfEqual skip_if(_masm, &DTraceAllocProbes, 0); | |
3300 // Trigger dtrace event for fastpath | |
3301 __ push(atos); | |
3302 __ call_VM_leaf( | |
3303 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), rax); | |
3304 __ pop(atos); | |
3305 } | |
3306 | |
3307 __ jmp(done); | |
3308 } | |
3309 | |
3310 // slow case | |
3311 __ bind(slow_case); | |
304 | 3312 __ pop(rcx); // restore stack pointer to what it was when we came in. |
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3313 __ bind(slow_case_no_pop); |
0 | 3314 __ get_constant_pool(rax); |
3315 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3316 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), rax, rdx); | |
3317 | |
3318 // continue | |
3319 __ bind(done); | |
3320 } | |
3321 | |
3322 | |
3323 void TemplateTable::newarray() { | |
3324 transition(itos, atos); | |
3325 __ push_i(rax); // make sure everything is on the stack | |
3326 __ load_unsigned_byte(rdx, at_bcp(1)); | |
3327 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray), rdx, rax); | |
3328 __ pop_i(rdx); // discard size | |
3329 } | |
3330 | |
3331 | |
3332 void TemplateTable::anewarray() { | |
3333 transition(itos, atos); | |
3334 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3335 __ get_constant_pool(rcx); | |
3336 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray), rcx, rdx, rax); | |
3337 } | |
3338 | |
3339 | |
3340 void TemplateTable::arraylength() { | |
3341 transition(atos, itos); | |
3342 __ null_check(rax, arrayOopDesc::length_offset_in_bytes()); | |
3343 __ movl(rax, Address(rax, arrayOopDesc::length_offset_in_bytes())); | |
3344 } | |
3345 | |
3346 | |
3347 void TemplateTable::checkcast() { | |
3348 transition(atos, atos); | |
3349 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3350 __ testptr(rax, rax); // Object is in EAX |
0 | 3351 __ jcc(Assembler::zero, is_null); |
3352 | |
3353 // Get cpool & tags index | |
3354 __ get_cpool_and_tags(rcx, rdx); // ECX=cpool, EDX=tags array | |
3355 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // EBX=index | |
3356 // See if bytecode has already been quicked | |
3357 __ cmpb(Address(rdx, rbx, Address::times_1, typeArrayOopDesc::header_size(T_BYTE) * wordSize), JVM_CONSTANT_Class); | |
3358 __ jcc(Assembler::equal, quicked); | |
3359 | |
3360 __ push(atos); | |
3361 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) ); | |
3362 __ pop_ptr(rdx); | |
3363 __ jmpb(resolved); | |
3364 | |
3365 // Get superklass in EAX and subklass in EBX | |
3366 __ bind(quicked); | |
304 | 3367 __ mov(rdx, rax); // Save object in EDX; EAX needed for subtype check |
3368 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, sizeof(constantPoolOopDesc))); | |
0 | 3369 |
3370 __ bind(resolved); | |
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3371 __ load_klass(rbx, rdx); |
0 | 3372 |
3373 // Generate subtype check. Blows ECX. Resets EDI. Object in EDX. | |
3374 // Superklass in EAX. Subklass in EBX. | |
3375 __ gen_subtype_check( rbx, ok_is_subtype ); | |
3376 | |
3377 // Come here on failure | |
304 | 3378 __ push(rdx); |
0 | 3379 // object is at TOS |
3380 __ jump(ExternalAddress(Interpreter::_throw_ClassCastException_entry)); | |
3381 | |
3382 // Come here on success | |
3383 __ bind(ok_is_subtype); | |
304 | 3384 __ mov(rax,rdx); // Restore object in EDX |
0 | 3385 |
3386 // Collect counts on whether this check-cast sees NULLs a lot or not. | |
3387 if (ProfileInterpreter) { | |
3388 __ jmp(done); | |
3389 __ bind(is_null); | |
3390 __ profile_null_seen(rcx); | |
3391 } else { | |
3392 __ bind(is_null); // same as 'done' | |
3393 } | |
3394 __ bind(done); | |
3395 } | |
3396 | |
3397 | |
3398 void TemplateTable::instanceof() { | |
3399 transition(atos, itos); | |
3400 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3401 __ testptr(rax, rax); |
0 | 3402 __ jcc(Assembler::zero, is_null); |
3403 | |
3404 // Get cpool & tags index | |
3405 __ get_cpool_and_tags(rcx, rdx); // ECX=cpool, EDX=tags array | |
3406 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // EBX=index | |
3407 // See if bytecode has already been quicked | |
3408 __ cmpb(Address(rdx, rbx, Address::times_1, typeArrayOopDesc::header_size(T_BYTE) * wordSize), JVM_CONSTANT_Class); | |
3409 __ jcc(Assembler::equal, quicked); | |
3410 | |
3411 __ push(atos); | |
3412 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) ); | |
3413 __ pop_ptr(rdx); | |
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3414 __ load_klass(rdx, rdx); |
0 | 3415 __ jmp(resolved); |
3416 | |
3417 // Get superklass in EAX and subklass in EDX | |
3418 __ bind(quicked); | |
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3419 __ load_klass(rdx, rax); |
304 | 3420 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, sizeof(constantPoolOopDesc))); |
0 | 3421 |
3422 __ bind(resolved); | |
3423 | |
3424 // Generate subtype check. Blows ECX. Resets EDI. | |
3425 // Superklass in EAX. Subklass in EDX. | |
3426 __ gen_subtype_check( rdx, ok_is_subtype ); | |
3427 | |
3428 // Come here on failure | |
3429 __ xorl(rax,rax); | |
3430 __ jmpb(done); | |
3431 // Come here on success | |
3432 __ bind(ok_is_subtype); | |
3433 __ movl(rax, 1); | |
3434 | |
3435 // Collect counts on whether this test sees NULLs a lot or not. | |
3436 if (ProfileInterpreter) { | |
3437 __ jmp(done); | |
3438 __ bind(is_null); | |
3439 __ profile_null_seen(rcx); | |
3440 } else { | |
3441 __ bind(is_null); // same as 'done' | |
3442 } | |
3443 __ bind(done); | |
3444 // rax, = 0: obj == NULL or obj is not an instanceof the specified klass | |
3445 // rax, = 1: obj != NULL and obj is an instanceof the specified klass | |
3446 } | |
3447 | |
3448 | |
3449 //---------------------------------------------------------------------------------------------------- | |
3450 // Breakpoints | |
3451 void TemplateTable::_breakpoint() { | |
3452 | |
3453 // Note: We get here even if we are single stepping.. | |
3454 // jbug inists on setting breakpoints at every bytecode | |
3455 // even if we are in single step mode. | |
3456 | |
3457 transition(vtos, vtos); | |
3458 | |
3459 // get the unpatched byte code | |
3460 __ get_method(rcx); | |
3461 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::get_original_bytecode_at), rcx, rsi); | |
304 | 3462 __ mov(rbx, rax); |
0 | 3463 |
3464 // post the breakpoint event | |
3465 __ get_method(rcx); | |
3466 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint), rcx, rsi); | |
3467 | |
3468 // complete the execution of original bytecode | |
3469 __ dispatch_only_normal(vtos); | |
3470 } | |
3471 | |
3472 | |
3473 //---------------------------------------------------------------------------------------------------- | |
3474 // Exceptions | |
3475 | |
3476 void TemplateTable::athrow() { | |
3477 transition(atos, vtos); | |
3478 __ null_check(rax); | |
3479 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
3480 } | |
3481 | |
3482 | |
3483 //---------------------------------------------------------------------------------------------------- | |
3484 // Synchronization | |
3485 // | |
3486 // Note: monitorenter & exit are symmetric routines; which is reflected | |
3487 // in the assembly code structure as well | |
3488 // | |
3489 // Stack layout: | |
3490 // | |
3491 // [expressions ] <--- rsp = expression stack top | |
3492 // .. | |
3493 // [expressions ] | |
3494 // [monitor entry] <--- monitor block top = expression stack bot | |
3495 // .. | |
3496 // [monitor entry] | |
3497 // [frame data ] <--- monitor block bot | |
3498 // ... | |
3499 // [saved rbp, ] <--- rbp, | |
3500 | |
3501 | |
3502 void TemplateTable::monitorenter() { | |
3503 transition(atos, vtos); | |
3504 | |
3505 // check for NULL object | |
3506 __ null_check(rax); | |
3507 | |
3508 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3509 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3510 const int entry_size = ( frame::interpreter_frame_monitor_size() * wordSize); | |
3511 Label allocated; | |
3512 | |
3513 // initialize entry pointer | |
3514 __ xorl(rdx, rdx); // points to free slot or NULL | |
3515 | |
3516 // find a free slot in the monitor block (result in rdx) | |
3517 { Label entry, loop, exit; | |
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3518 __ movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry |
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3519 |
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3520 __ lea(rbx, monitor_block_bot); // points to word before bottom of monitor block |
0 | 3521 __ jmpb(entry); |
3522 | |
3523 __ bind(loop); | |
304 | 3524 __ cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used |
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3525 __ cmovptr(Assembler::equal, rdx, rcx); // if not used then remember entry in rdx |
304 | 3526 __ cmpptr(rax, Address(rcx, BasicObjectLock::obj_offset_in_bytes())); // check if current entry is for same object |
3527 __ jccb(Assembler::equal, exit); // if same object then stop searching | |
3528 __ addptr(rcx, entry_size); // otherwise advance to next entry | |
0 | 3529 __ bind(entry); |
304 | 3530 __ cmpptr(rcx, rbx); // check if bottom reached |
0 | 3531 __ jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
3532 __ bind(exit); | |
3533 } | |
3534 | |
304 | 3535 __ testptr(rdx, rdx); // check if a slot has been found |
3536 __ jccb(Assembler::notZero, allocated); // if found, continue with that one | |
0 | 3537 |
3538 // allocate one if there's no free slot | |
3539 { Label entry, loop; | |
3540 // 1. compute new pointers // rsp: old expression stack top | |
304 | 3541 __ movptr(rdx, monitor_block_bot); // rdx: old expression stack bottom |
3542 __ subptr(rsp, entry_size); // move expression stack top | |
3543 __ subptr(rdx, entry_size); // move expression stack bottom | |
3544 __ mov(rcx, rsp); // set start value for copy loop | |
3545 __ movptr(monitor_block_bot, rdx); // set new monitor block top | |
0 | 3546 __ jmp(entry); |
3547 // 2. move expression stack contents | |
3548 __ bind(loop); | |
304 | 3549 __ movptr(rbx, Address(rcx, entry_size)); // load expression stack word from old location |
3550 __ movptr(Address(rcx, 0), rbx); // and store it at new location | |
3551 __ addptr(rcx, wordSize); // advance to next word | |
0 | 3552 __ bind(entry); |
304 | 3553 __ cmpptr(rcx, rdx); // check if bottom reached |
0 | 3554 __ jcc(Assembler::notEqual, loop); // if not at bottom then copy next word |
3555 } | |
3556 | |
3557 // call run-time routine | |
3558 // rdx: points to monitor entry | |
3559 __ bind(allocated); | |
3560 | |
3561 // Increment bcp to point to the next bytecode, so exception handling for async. exceptions work correctly. | |
3562 // The object has already been poped from the stack, so the expression stack looks correct. | |
3563 __ increment(rsi); | |
3564 | |
304 | 3565 __ movptr(Address(rdx, BasicObjectLock::obj_offset_in_bytes()), rax); // store object |
0 | 3566 __ lock_object(rdx); |
3567 | |
3568 // check to make sure this monitor doesn't cause stack overflow after locking | |
3569 __ save_bcp(); // in case of exception | |
3570 __ generate_stack_overflow_check(0); | |
3571 | |
3572 // The bcp has already been incremented. Just need to dispatch to next instruction. | |
3573 __ dispatch_next(vtos); | |
3574 } | |
3575 | |
3576 | |
3577 void TemplateTable::monitorexit() { | |
3578 transition(atos, vtos); | |
3579 | |
3580 // check for NULL object | |
3581 __ null_check(rax); | |
3582 | |
3583 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3584 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3585 const int entry_size = ( frame::interpreter_frame_monitor_size() * wordSize); | |
3586 Label found; | |
3587 | |
3588 // find matching slot | |
3589 { Label entry, loop; | |
304 | 3590 __ movptr(rdx, monitor_block_top); // points to current entry, starting with top-most entry |
3591 __ lea(rbx, monitor_block_bot); // points to word before bottom of monitor block | |
0 | 3592 __ jmpb(entry); |
3593 | |
3594 __ bind(loop); | |
304 | 3595 __ cmpptr(rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); // check if current entry is for same object |
0 | 3596 __ jcc(Assembler::equal, found); // if same object then stop searching |
304 | 3597 __ addptr(rdx, entry_size); // otherwise advance to next entry |
0 | 3598 __ bind(entry); |
304 | 3599 __ cmpptr(rdx, rbx); // check if bottom reached |
0 | 3600 __ jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
3601 } | |
3602 | |
3603 // error handling. Unlocking was not block-structured | |
3604 Label end; | |
3605 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
3606 __ should_not_reach_here(); | |
3607 | |
3608 // call run-time routine | |
3609 // rcx: points to monitor entry | |
3610 __ bind(found); | |
3611 __ push_ptr(rax); // make sure object is on stack (contract with oopMaps) | |
3612 __ unlock_object(rdx); | |
3613 __ pop_ptr(rax); // discard object | |
3614 __ bind(end); | |
3615 } | |
3616 | |
3617 | |
3618 //---------------------------------------------------------------------------------------------------- | |
3619 // Wide instructions | |
3620 | |
3621 void TemplateTable::wide() { | |
3622 transition(vtos, vtos); | |
3623 __ load_unsigned_byte(rbx, at_bcp(1)); | |
304 | 3624 ExternalAddress wtable((address)Interpreter::_wentry_point); |
3625 __ jump(ArrayAddress(wtable, Address(noreg, rbx, Address::times_ptr))); | |
0 | 3626 // Note: the rsi increment step is part of the individual wide bytecode implementations |
3627 } | |
3628 | |
3629 | |
3630 //---------------------------------------------------------------------------------------------------- | |
3631 // Multi arrays | |
3632 | |
3633 void TemplateTable::multianewarray() { | |
3634 transition(vtos, atos); | |
3635 __ load_unsigned_byte(rax, at_bcp(3)); // get number of dimensions | |
3636 // last dim is on top of stack; we want address of first one: | |
3637 // first_addr = last_addr + (ndims - 1) * stackElementSize - 1*wordsize | |
3638 // the latter wordSize to point to the beginning of the array. | |
304 | 3639 __ lea( rax, Address(rsp, rax, Interpreter::stackElementScale(), -wordSize)); |
0 | 3640 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), rax); // pass in rax, |
3641 __ load_unsigned_byte(rbx, at_bcp(3)); | |
304 | 3642 __ lea(rsp, Address(rsp, rbx, Interpreter::stackElementScale())); // get rid of counts |
0 | 3643 } |
3644 | |
3645 #endif /* !CC_INTERP */ |