Mercurial > hg > graal-compiler
annotate src/cpu/x86/vm/templateTable_x86_32.cpp @ 10105:aeaca88565e6
8010862: The Method counter fields used for profiling can be allocated lazily.
Summary: Allocate the method's profiling related metadata until they are needed.
Reviewed-by: coleenp, roland
| author | jiangli |
|---|---|
| date | Tue, 09 Apr 2013 17:17:41 -0400 |
| parents | db9981fd3124 |
| children | d13d7aba8c12 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
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26 #include "asm/macroAssembler.hpp" |
| 1972 | 27 #include "interpreter/interpreter.hpp" |
| 28 #include "interpreter/interpreterRuntime.hpp" | |
| 29 #include "interpreter/templateTable.hpp" | |
| 30 #include "memory/universe.inline.hpp" | |
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31 #include "oops/methodData.hpp" |
| 1972 | 32 #include "oops/objArrayKlass.hpp" |
| 33 #include "oops/oop.inline.hpp" | |
| 34 #include "prims/methodHandles.hpp" | |
| 35 #include "runtime/sharedRuntime.hpp" | |
| 36 #include "runtime/stubRoutines.hpp" | |
| 37 #include "runtime/synchronizer.hpp" | |
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38 #include "utilities/macros.hpp" |
| 0 | 39 |
| 40 #ifndef CC_INTERP | |
| 41 #define __ _masm-> | |
| 42 | |
| 43 //---------------------------------------------------------------------------------------------------- | |
| 44 // Platform-dependent initialization | |
| 45 | |
| 46 void TemplateTable::pd_initialize() { | |
| 47 // No i486 specific initialization | |
| 48 } | |
| 49 | |
| 50 //---------------------------------------------------------------------------------------------------- | |
| 51 // Address computation | |
| 52 | |
| 53 // local variables | |
| 54 static inline Address iaddress(int n) { | |
| 55 return Address(rdi, Interpreter::local_offset_in_bytes(n)); | |
| 56 } | |
| 57 | |
| 58 static inline Address laddress(int n) { return iaddress(n + 1); } | |
| 59 static inline Address haddress(int n) { return iaddress(n + 0); } | |
| 60 static inline Address faddress(int n) { return iaddress(n); } | |
| 61 static inline Address daddress(int n) { return laddress(n); } | |
| 62 static inline Address aaddress(int n) { return iaddress(n); } | |
| 63 | |
| 64 static inline Address iaddress(Register r) { | |
| 1506 | 65 return Address(rdi, r, Interpreter::stackElementScale()); |
| 0 | 66 } |
| 67 static inline Address laddress(Register r) { | |
| 68 return Address(rdi, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(1)); | |
| 69 } | |
| 70 static inline Address haddress(Register r) { | |
| 71 return Address(rdi, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(0)); | |
| 72 } | |
| 73 | |
| 1506 | 74 static inline Address faddress(Register r) { return iaddress(r); } |
| 75 static inline Address daddress(Register r) { return laddress(r); } | |
| 76 static inline Address aaddress(Register r) { return iaddress(r); } | |
| 0 | 77 |
| 78 // expression stack | |
| 79 // (Note: Must not use symmetric equivalents at_rsp_m1/2 since they store | |
| 80 // data beyond the rsp which is potentially unsafe in an MT environment; | |
| 81 // an interrupt may overwrite that data.) | |
| 82 static inline Address at_rsp () { | |
| 83 return Address(rsp, 0); | |
| 84 } | |
| 85 | |
| 86 // At top of Java expression stack which may be different than rsp(). It | |
| 87 // isn't for category 1 objects. | |
| 88 static inline Address at_tos () { | |
| 89 Address tos = Address(rsp, Interpreter::expr_offset_in_bytes(0)); | |
| 90 return tos; | |
| 91 } | |
| 92 | |
| 93 static inline Address at_tos_p1() { | |
| 94 return Address(rsp, Interpreter::expr_offset_in_bytes(1)); | |
| 95 } | |
| 96 | |
| 97 static inline Address at_tos_p2() { | |
| 98 return Address(rsp, Interpreter::expr_offset_in_bytes(2)); | |
| 99 } | |
| 100 | |
| 101 // Condition conversion | |
| 102 static Assembler::Condition j_not(TemplateTable::Condition cc) { | |
| 103 switch (cc) { | |
| 104 case TemplateTable::equal : return Assembler::notEqual; | |
| 105 case TemplateTable::not_equal : return Assembler::equal; | |
| 106 case TemplateTable::less : return Assembler::greaterEqual; | |
| 107 case TemplateTable::less_equal : return Assembler::greater; | |
| 108 case TemplateTable::greater : return Assembler::lessEqual; | |
| 109 case TemplateTable::greater_equal: return Assembler::less; | |
| 110 } | |
| 111 ShouldNotReachHere(); | |
| 112 return Assembler::zero; | |
| 113 } | |
| 114 | |
| 115 | |
| 116 //---------------------------------------------------------------------------------------------------- | |
| 117 // Miscelaneous helper routines | |
| 118 | |
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119 // Store an oop (or NULL) at the address described by obj. |
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120 // If val == noreg this means store a NULL |
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121 |
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122 static void do_oop_store(InterpreterMacroAssembler* _masm, |
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123 Address obj, |
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124 Register val, |
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125 BarrierSet::Name barrier, |
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126 bool precise) { |
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127 assert(val == noreg || val == rax, "parameter is just for looks"); |
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128 switch (barrier) { |
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129 #if INCLUDE_ALL_GCS |
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130 case BarrierSet::G1SATBCT: |
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131 case BarrierSet::G1SATBCTLogging: |
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132 { |
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133 // flatten object address if needed |
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134 // We do it regardless of precise because we need the registers |
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135 if (obj.index() == noreg && obj.disp() == 0) { |
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136 if (obj.base() != rdx) { |
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137 __ movl(rdx, obj.base()); |
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138 } |
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139 } else { |
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140 __ leal(rdx, obj); |
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141 } |
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142 __ get_thread(rcx); |
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143 __ save_bcp(); |
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144 __ g1_write_barrier_pre(rdx /* obj */, |
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145 rbx /* pre_val */, |
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146 rcx /* thread */, |
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147 rsi /* tmp */, |
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148 val != noreg /* tosca_live */, |
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149 false /* expand_call */); |
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150 |
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151 // Do the actual store |
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152 // noreg means NULL |
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153 if (val == noreg) { |
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154 __ movptr(Address(rdx, 0), NULL_WORD); |
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155 // No post barrier for NULL |
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156 } else { |
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157 __ movl(Address(rdx, 0), val); |
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158 __ g1_write_barrier_post(rdx /* store_adr */, |
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159 val /* new_val */, |
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160 rcx /* thread */, |
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161 rbx /* tmp */, |
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162 rsi /* tmp2 */); |
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163 } |
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164 __ restore_bcp(); |
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165 |
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166 } |
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167 break; |
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168 #endif // INCLUDE_ALL_GCS |
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169 case BarrierSet::CardTableModRef: |
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170 case BarrierSet::CardTableExtension: |
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171 { |
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172 if (val == noreg) { |
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173 __ movptr(obj, NULL_WORD); |
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174 } else { |
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175 __ movl(obj, val); |
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176 // flatten object address if needed |
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177 if (!precise || (obj.index() == noreg && obj.disp() == 0)) { |
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178 __ store_check(obj.base()); |
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179 } else { |
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180 __ leal(rdx, obj); |
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181 __ store_check(rdx); |
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182 } |
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183 } |
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184 } |
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185 break; |
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186 case BarrierSet::ModRef: |
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187 case BarrierSet::Other: |
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188 if (val == noreg) { |
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189 __ movptr(obj, NULL_WORD); |
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190 } else { |
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191 __ movl(obj, val); |
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192 } |
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193 break; |
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194 default : |
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195 ShouldNotReachHere(); |
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196 |
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197 } |
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198 } |
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199 |
| 0 | 200 Address TemplateTable::at_bcp(int offset) { |
| 201 assert(_desc->uses_bcp(), "inconsistent uses_bcp information"); | |
| 202 return Address(rsi, offset); | |
| 203 } | |
| 204 | |
| 205 | |
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206 void TemplateTable::patch_bytecode(Bytecodes::Code bc, Register bc_reg, |
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207 Register temp_reg, bool load_bc_into_bc_reg/*=true*/, |
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208 int byte_no) { |
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209 if (!RewriteBytecodes) return; |
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210 Label L_patch_done; |
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211 |
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212 switch (bc) { |
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213 case Bytecodes::_fast_aputfield: |
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214 case Bytecodes::_fast_bputfield: |
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215 case Bytecodes::_fast_cputfield: |
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216 case Bytecodes::_fast_dputfield: |
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217 case Bytecodes::_fast_fputfield: |
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218 case Bytecodes::_fast_iputfield: |
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219 case Bytecodes::_fast_lputfield: |
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220 case Bytecodes::_fast_sputfield: |
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221 { |
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222 // We skip bytecode quickening for putfield instructions when |
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223 // the put_code written to the constant pool cache is zero. |
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224 // This is required so that every execution of this instruction |
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225 // calls out to InterpreterRuntime::resolve_get_put to do |
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226 // additional, required work. |
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227 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range"); |
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228 assert(load_bc_into_bc_reg, "we use bc_reg as temp"); |
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229 __ get_cache_and_index_and_bytecode_at_bcp(bc_reg, temp_reg, temp_reg, byte_no, 1); |
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230 __ movl(bc_reg, bc); |
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231 __ cmpl(temp_reg, (int) 0); |
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232 __ jcc(Assembler::zero, L_patch_done); // don't patch |
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233 } |
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234 break; |
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235 default: |
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236 assert(byte_no == -1, "sanity"); |
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237 // the pair bytecodes have already done the load. |
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238 if (load_bc_into_bc_reg) { |
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239 __ movl(bc_reg, bc); |
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240 } |
| 304 | 241 } |
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242 |
| 0 | 243 if (JvmtiExport::can_post_breakpoint()) { |
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244 Label L_fast_patch; |
| 0 | 245 // if a breakpoint is present we can't rewrite the stream directly |
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246 __ movzbl(temp_reg, at_bcp(0)); |
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247 __ cmpl(temp_reg, Bytecodes::_breakpoint); |
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248 __ jcc(Assembler::notEqual, L_fast_patch); |
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249 __ get_method(temp_reg); |
| 0 | 250 // Let breakpoint table handling rewrite to quicker bytecode |
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251 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), temp_reg, rsi, bc_reg); |
| 0 | 252 #ifndef ASSERT |
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253 __ jmpb(L_patch_done); |
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254 #else |
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255 __ jmp(L_patch_done); |
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256 #endif |
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257 __ bind(L_fast_patch); |
| 0 | 258 } |
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259 |
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260 #ifdef ASSERT |
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261 Label L_okay; |
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262 __ load_unsigned_byte(temp_reg, at_bcp(0)); |
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263 __ cmpl(temp_reg, (int)Bytecodes::java_code(bc)); |
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264 __ jccb(Assembler::equal, L_okay); |
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265 __ cmpl(temp_reg, bc_reg); |
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266 __ jcc(Assembler::equal, L_okay); |
| 0 | 267 __ stop("patching the wrong bytecode"); |
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268 __ bind(L_okay); |
| 0 | 269 #endif |
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270 |
| 0 | 271 // patch bytecode |
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272 __ movb(at_bcp(0), bc_reg); |
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273 __ bind(L_patch_done); |
| 0 | 274 } |
| 275 | |
| 276 //---------------------------------------------------------------------------------------------------- | |
| 277 // Individual instructions | |
| 278 | |
| 279 void TemplateTable::nop() { | |
| 280 transition(vtos, vtos); | |
| 281 // nothing to do | |
| 282 } | |
| 283 | |
| 284 void TemplateTable::shouldnotreachhere() { | |
| 285 transition(vtos, vtos); | |
| 286 __ stop("shouldnotreachhere bytecode"); | |
| 287 } | |
| 288 | |
| 289 | |
| 290 | |
| 291 void TemplateTable::aconst_null() { | |
| 292 transition(vtos, atos); | |
| 304 | 293 __ xorptr(rax, rax); |
| 0 | 294 } |
| 295 | |
| 296 | |
| 297 void TemplateTable::iconst(int value) { | |
| 298 transition(vtos, itos); | |
| 299 if (value == 0) { | |
| 304 | 300 __ xorptr(rax, rax); |
| 0 | 301 } else { |
| 304 | 302 __ movptr(rax, value); |
| 0 | 303 } |
| 304 } | |
| 305 | |
| 306 | |
| 307 void TemplateTable::lconst(int value) { | |
| 308 transition(vtos, ltos); | |
| 309 if (value == 0) { | |
| 304 | 310 __ xorptr(rax, rax); |
| 0 | 311 } else { |
| 304 | 312 __ movptr(rax, value); |
| 0 | 313 } |
| 314 assert(value >= 0, "check this code"); | |
| 304 | 315 __ xorptr(rdx, rdx); |
| 0 | 316 } |
| 317 | |
| 318 | |
| 319 void TemplateTable::fconst(int value) { | |
| 320 transition(vtos, ftos); | |
| 321 if (value == 0) { __ fldz(); | |
| 322 } else if (value == 1) { __ fld1(); | |
| 323 } else if (value == 2) { __ fld1(); __ fld1(); __ faddp(); // should do a better solution here | |
| 324 } else { ShouldNotReachHere(); | |
| 325 } | |
| 326 } | |
| 327 | |
| 328 | |
| 329 void TemplateTable::dconst(int value) { | |
| 330 transition(vtos, dtos); | |
| 331 if (value == 0) { __ fldz(); | |
| 332 } else if (value == 1) { __ fld1(); | |
| 333 } else { ShouldNotReachHere(); | |
| 334 } | |
| 335 } | |
| 336 | |
| 337 | |
| 338 void TemplateTable::bipush() { | |
| 339 transition(vtos, itos); | |
| 340 __ load_signed_byte(rax, at_bcp(1)); | |
| 341 } | |
| 342 | |
| 343 | |
| 344 void TemplateTable::sipush() { | |
| 345 transition(vtos, itos); | |
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346 __ load_unsigned_short(rax, at_bcp(1)); |
| 304 | 347 __ bswapl(rax); |
| 0 | 348 __ sarl(rax, 16); |
| 349 } | |
| 350 | |
| 351 void TemplateTable::ldc(bool wide) { | |
| 352 transition(vtos, vtos); | |
| 353 Label call_ldc, notFloat, notClass, Done; | |
| 354 | |
| 355 if (wide) { | |
| 356 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
| 357 } else { | |
| 358 __ load_unsigned_byte(rbx, at_bcp(1)); | |
| 359 } | |
| 360 __ get_cpool_and_tags(rcx, rax); | |
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361 const int base_offset = ConstantPool::header_size() * wordSize; |
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362 const int tags_offset = Array<u1>::base_offset_in_bytes(); |
| 0 | 363 |
| 364 // get type | |
| 304 | 365 __ xorptr(rdx, rdx); |
| 0 | 366 __ movb(rdx, Address(rax, rbx, Address::times_1, tags_offset)); |
| 367 | |
| 368 // unresolved class - get the resolved class | |
| 369 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClass); | |
| 370 __ jccb(Assembler::equal, call_ldc); | |
| 371 | |
| 372 // unresolved class in error (resolution failed) - call into runtime | |
| 373 // so that the same error from first resolution attempt is thrown. | |
| 374 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClassInError); | |
| 375 __ jccb(Assembler::equal, call_ldc); | |
| 376 | |
| 377 // resolved class - need to call vm to get java mirror of the class | |
| 378 __ cmpl(rdx, JVM_CONSTANT_Class); | |
| 379 __ jcc(Assembler::notEqual, notClass); | |
| 380 | |
| 381 __ bind(call_ldc); | |
| 382 __ movl(rcx, wide); | |
| 383 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), rcx); | |
| 384 __ push(atos); | |
| 385 __ jmp(Done); | |
| 386 | |
| 387 __ bind(notClass); | |
| 388 __ cmpl(rdx, JVM_CONSTANT_Float); | |
| 389 __ jccb(Assembler::notEqual, notFloat); | |
| 390 // ftos | |
| 304 | 391 __ fld_s( Address(rcx, rbx, Address::times_ptr, base_offset)); |
| 0 | 392 __ push(ftos); |
| 393 __ jmp(Done); | |
| 394 | |
| 395 __ bind(notFloat); | |
| 396 #ifdef ASSERT | |
| 397 { Label L; | |
| 398 __ cmpl(rdx, JVM_CONSTANT_Integer); | |
| 399 __ jcc(Assembler::equal, L); | |
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400 // String and Object are rewritten to fast_aldc |
| 0 | 401 __ stop("unexpected tag type in ldc"); |
| 402 __ bind(L); | |
| 403 } | |
| 404 #endif | |
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405 // itos JVM_CONSTANT_Integer only |
| 304 | 406 __ movl(rax, Address(rcx, rbx, Address::times_ptr, base_offset)); |
| 0 | 407 __ push(itos); |
| 408 __ bind(Done); | |
| 409 } | |
| 410 | |
| 1602 | 411 // Fast path for caching oop constants. |
| 412 void TemplateTable::fast_aldc(bool wide) { | |
| 413 transition(vtos, atos); | |
| 414 | |
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415 Register result = rax; |
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416 Register tmp = rdx; |
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417 int index_size = wide ? sizeof(u2) : sizeof(u1); |
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418 |
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419 Label resolved; |
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420 |
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421 // We are resolved if the resolved reference cache entry contains a |
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422 // non-null object (String, MethodType, etc.) |
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423 assert_different_registers(result, tmp); |
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424 __ get_cache_index_at_bcp(tmp, 1, index_size); |
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425 __ load_resolved_reference_at_index(result, tmp); |
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426 __ testl(result, result); |
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427 __ jcc(Assembler::notZero, resolved); |
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428 |
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429 address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); |
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430 |
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431 // first time invocation - must resolve first |
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432 __ movl(tmp, (int)bytecode()); |
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433 __ call_VM(result, entry, tmp); |
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434 |
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435 __ bind(resolved); |
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436 |
| 1602 | 437 if (VerifyOops) { |
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438 __ verify_oop(result); |
| 1602 | 439 } |
| 440 } | |
| 441 | |
| 0 | 442 void TemplateTable::ldc2_w() { |
| 443 transition(vtos, vtos); | |
| 444 Label Long, Done; | |
| 445 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
| 446 | |
| 447 __ get_cpool_and_tags(rcx, rax); | |
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448 const int base_offset = ConstantPool::header_size() * wordSize; |
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449 const int tags_offset = Array<u1>::base_offset_in_bytes(); |
| 0 | 450 |
| 451 // get type | |
| 452 __ cmpb(Address(rax, rbx, Address::times_1, tags_offset), JVM_CONSTANT_Double); | |
| 453 __ jccb(Assembler::notEqual, Long); | |
| 454 // dtos | |
| 304 | 455 __ fld_d( Address(rcx, rbx, Address::times_ptr, base_offset)); |
| 0 | 456 __ push(dtos); |
| 457 __ jmpb(Done); | |
| 458 | |
| 459 __ bind(Long); | |
| 460 // ltos | |
| 304 | 461 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, base_offset + 0 * wordSize)); |
| 462 NOT_LP64(__ movptr(rdx, Address(rcx, rbx, Address::times_ptr, base_offset + 1 * wordSize))); | |
| 0 | 463 |
| 464 __ push(ltos); | |
| 465 | |
| 466 __ bind(Done); | |
| 467 } | |
| 468 | |
| 469 | |
| 470 void TemplateTable::locals_index(Register reg, int offset) { | |
| 471 __ load_unsigned_byte(reg, at_bcp(offset)); | |
| 304 | 472 __ negptr(reg); |
| 0 | 473 } |
| 474 | |
| 475 | |
| 476 void TemplateTable::iload() { | |
| 477 transition(vtos, itos); | |
| 478 if (RewriteFrequentPairs) { | |
| 479 Label rewrite, done; | |
| 480 | |
| 481 // get next byte | |
| 482 __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_iload))); | |
| 483 // if _iload, wait to rewrite to iload2. We only want to rewrite the | |
| 484 // last two iloads in a pair. Comparing against fast_iload means that | |
| 485 // the next bytecode is neither an iload or a caload, and therefore | |
| 486 // an iload pair. | |
| 487 __ cmpl(rbx, Bytecodes::_iload); | |
| 488 __ jcc(Assembler::equal, done); | |
| 489 | |
| 490 __ cmpl(rbx, Bytecodes::_fast_iload); | |
| 491 __ movl(rcx, Bytecodes::_fast_iload2); | |
| 492 __ jccb(Assembler::equal, rewrite); | |
| 493 | |
| 494 // if _caload, rewrite to fast_icaload | |
| 495 __ cmpl(rbx, Bytecodes::_caload); | |
| 496 __ movl(rcx, Bytecodes::_fast_icaload); | |
| 497 __ jccb(Assembler::equal, rewrite); | |
| 498 | |
| 499 // rewrite so iload doesn't check again. | |
| 500 __ movl(rcx, Bytecodes::_fast_iload); | |
| 501 | |
| 502 // rewrite | |
| 503 // rcx: fast bytecode | |
| 504 __ bind(rewrite); | |
| 505 patch_bytecode(Bytecodes::_iload, rcx, rbx, false); | |
| 506 __ bind(done); | |
| 507 } | |
| 508 | |
| 509 // Get the local value into tos | |
| 510 locals_index(rbx); | |
| 511 __ movl(rax, iaddress(rbx)); | |
| 512 } | |
| 513 | |
| 514 | |
| 515 void TemplateTable::fast_iload2() { | |
| 516 transition(vtos, itos); | |
| 517 locals_index(rbx); | |
| 518 __ movl(rax, iaddress(rbx)); | |
| 519 __ push(itos); | |
| 520 locals_index(rbx, 3); | |
| 521 __ movl(rax, iaddress(rbx)); | |
| 522 } | |
| 523 | |
| 524 void TemplateTable::fast_iload() { | |
| 525 transition(vtos, itos); | |
| 526 locals_index(rbx); | |
| 527 __ movl(rax, iaddress(rbx)); | |
| 528 } | |
| 529 | |
| 530 | |
| 531 void TemplateTable::lload() { | |
| 532 transition(vtos, ltos); | |
| 533 locals_index(rbx); | |
| 304 | 534 __ movptr(rax, laddress(rbx)); |
| 535 NOT_LP64(__ movl(rdx, haddress(rbx))); | |
| 0 | 536 } |
| 537 | |
| 538 | |
| 539 void TemplateTable::fload() { | |
| 540 transition(vtos, ftos); | |
| 541 locals_index(rbx); | |
| 542 __ fld_s(faddress(rbx)); | |
| 543 } | |
| 544 | |
| 545 | |
| 546 void TemplateTable::dload() { | |
| 547 transition(vtos, dtos); | |
| 548 locals_index(rbx); | |
| 1506 | 549 __ fld_d(daddress(rbx)); |
| 0 | 550 } |
| 551 | |
| 552 | |
| 553 void TemplateTable::aload() { | |
| 554 transition(vtos, atos); | |
| 555 locals_index(rbx); | |
| 304 | 556 __ movptr(rax, aaddress(rbx)); |
| 0 | 557 } |
| 558 | |
| 559 | |
| 560 void TemplateTable::locals_index_wide(Register reg) { | |
| 561 __ movl(reg, at_bcp(2)); | |
| 304 | 562 __ bswapl(reg); |
| 0 | 563 __ shrl(reg, 16); |
| 304 | 564 __ negptr(reg); |
| 0 | 565 } |
| 566 | |
| 567 | |
| 568 void TemplateTable::wide_iload() { | |
| 569 transition(vtos, itos); | |
| 570 locals_index_wide(rbx); | |
| 571 __ movl(rax, iaddress(rbx)); | |
| 572 } | |
| 573 | |
| 574 | |
| 575 void TemplateTable::wide_lload() { | |
| 576 transition(vtos, ltos); | |
| 577 locals_index_wide(rbx); | |
| 304 | 578 __ movptr(rax, laddress(rbx)); |
| 579 NOT_LP64(__ movl(rdx, haddress(rbx))); | |
| 0 | 580 } |
| 581 | |
| 582 | |
| 583 void TemplateTable::wide_fload() { | |
| 584 transition(vtos, ftos); | |
| 585 locals_index_wide(rbx); | |
| 586 __ fld_s(faddress(rbx)); | |
| 587 } | |
| 588 | |
| 589 | |
| 590 void TemplateTable::wide_dload() { | |
| 591 transition(vtos, dtos); | |
| 592 locals_index_wide(rbx); | |
| 1506 | 593 __ fld_d(daddress(rbx)); |
| 0 | 594 } |
| 595 | |
| 596 | |
| 597 void TemplateTable::wide_aload() { | |
| 598 transition(vtos, atos); | |
| 599 locals_index_wide(rbx); | |
| 304 | 600 __ movptr(rax, aaddress(rbx)); |
| 0 | 601 } |
| 602 | |
| 603 void TemplateTable::index_check(Register array, Register index) { | |
| 604 // Pop ptr into array | |
| 605 __ pop_ptr(array); | |
| 606 index_check_without_pop(array, index); | |
| 607 } | |
| 608 | |
| 609 void TemplateTable::index_check_without_pop(Register array, Register index) { | |
| 610 // destroys rbx, | |
| 611 // check array | |
| 612 __ null_check(array, arrayOopDesc::length_offset_in_bytes()); | |
| 304 | 613 LP64_ONLY(__ movslq(index, index)); |
| 0 | 614 // check index |
| 615 __ cmpl(index, Address(array, arrayOopDesc::length_offset_in_bytes())); | |
| 616 if (index != rbx) { | |
| 617 // ??? convention: move aberrant index into rbx, for exception message | |
| 618 assert(rbx != array, "different registers"); | |
| 304 | 619 __ mov(rbx, index); |
| 0 | 620 } |
| 621 __ jump_cc(Assembler::aboveEqual, | |
| 622 ExternalAddress(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry)); | |
| 623 } | |
| 624 | |
| 625 | |
| 626 void TemplateTable::iaload() { | |
| 627 transition(itos, itos); | |
| 628 // rdx: array | |
| 629 index_check(rdx, rax); // kills rbx, | |
| 630 // rax,: index | |
| 631 __ movl(rax, Address(rdx, rax, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_INT))); | |
| 632 } | |
| 633 | |
| 634 | |
| 635 void TemplateTable::laload() { | |
| 636 transition(itos, ltos); | |
| 637 // rax,: index | |
| 638 // rdx: array | |
| 639 index_check(rdx, rax); | |
| 304 | 640 __ mov(rbx, rax); |
| 0 | 641 // rbx,: index |
| 304 | 642 __ movptr(rax, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize)); |
| 643 NOT_LP64(__ movl(rdx, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize))); | |
| 0 | 644 } |
| 645 | |
| 646 | |
| 647 void TemplateTable::faload() { | |
| 648 transition(itos, ftos); | |
| 649 // rdx: array | |
| 650 index_check(rdx, rax); // kills rbx, | |
| 651 // rax,: index | |
| 652 __ fld_s(Address(rdx, rax, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT))); | |
| 653 } | |
| 654 | |
| 655 | |
| 656 void TemplateTable::daload() { | |
| 657 transition(itos, dtos); | |
| 658 // rdx: array | |
| 659 index_check(rdx, rax); // kills rbx, | |
| 660 // rax,: index | |
| 661 __ fld_d(Address(rdx, rax, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); | |
| 662 } | |
| 663 | |
| 664 | |
| 665 void TemplateTable::aaload() { | |
| 666 transition(itos, atos); | |
| 667 // rdx: array | |
| 668 index_check(rdx, rax); // kills rbx, | |
| 669 // rax,: index | |
| 304 | 670 __ movptr(rax, Address(rdx, rax, Address::times_ptr, arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
| 0 | 671 } |
| 672 | |
| 673 | |
| 674 void TemplateTable::baload() { | |
| 675 transition(itos, itos); | |
| 676 // rdx: array | |
| 677 index_check(rdx, rax); // kills rbx, | |
| 678 // rax,: index | |
| 679 // can do better code for P5 - fix this at some point | |
| 680 __ load_signed_byte(rbx, Address(rdx, rax, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE))); | |
| 304 | 681 __ mov(rax, rbx); |
| 0 | 682 } |
| 683 | |
| 684 | |
| 685 void TemplateTable::caload() { | |
| 686 transition(itos, itos); | |
| 687 // rdx: array | |
| 688 index_check(rdx, rax); // kills rbx, | |
| 689 // rax,: index | |
| 690 // can do better code for P5 - may want to improve this at some point | |
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691 __ load_unsigned_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
| 304 | 692 __ mov(rax, rbx); |
| 0 | 693 } |
| 694 | |
| 695 // iload followed by caload frequent pair | |
| 696 void TemplateTable::fast_icaload() { | |
| 697 transition(vtos, itos); | |
| 698 // load index out of locals | |
| 699 locals_index(rbx); | |
| 700 __ movl(rax, iaddress(rbx)); | |
| 701 | |
| 702 // rdx: array | |
| 703 index_check(rdx, rax); | |
| 704 // rax,: index | |
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705 __ load_unsigned_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
| 304 | 706 __ mov(rax, rbx); |
| 0 | 707 } |
| 708 | |
| 709 void TemplateTable::saload() { | |
| 710 transition(itos, itos); | |
| 711 // rdx: array | |
| 712 index_check(rdx, rax); // kills rbx, | |
| 713 // rax,: index | |
| 714 // can do better code for P5 - may want to improve this at some point | |
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715 __ load_signed_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_SHORT))); |
| 304 | 716 __ mov(rax, rbx); |
| 0 | 717 } |
| 718 | |
| 719 | |
| 720 void TemplateTable::iload(int n) { | |
| 721 transition(vtos, itos); | |
| 722 __ movl(rax, iaddress(n)); | |
| 723 } | |
| 724 | |
| 725 | |
| 726 void TemplateTable::lload(int n) { | |
| 727 transition(vtos, ltos); | |
| 304 | 728 __ movptr(rax, laddress(n)); |
| 729 NOT_LP64(__ movptr(rdx, haddress(n))); | |
| 0 | 730 } |
| 731 | |
| 732 | |
| 733 void TemplateTable::fload(int n) { | |
| 734 transition(vtos, ftos); | |
| 735 __ fld_s(faddress(n)); | |
| 736 } | |
| 737 | |
| 738 | |
| 739 void TemplateTable::dload(int n) { | |
| 740 transition(vtos, dtos); | |
| 1506 | 741 __ fld_d(daddress(n)); |
| 0 | 742 } |
| 743 | |
| 744 | |
| 745 void TemplateTable::aload(int n) { | |
| 746 transition(vtos, atos); | |
| 304 | 747 __ movptr(rax, aaddress(n)); |
| 0 | 748 } |
| 749 | |
| 750 | |
| 751 void TemplateTable::aload_0() { | |
| 752 transition(vtos, atos); | |
| 753 // According to bytecode histograms, the pairs: | |
| 754 // | |
| 755 // _aload_0, _fast_igetfield | |
| 756 // _aload_0, _fast_agetfield | |
| 757 // _aload_0, _fast_fgetfield | |
| 758 // | |
| 759 // occur frequently. If RewriteFrequentPairs is set, the (slow) _aload_0 | |
| 760 // bytecode checks if the next bytecode is either _fast_igetfield, | |
| 761 // _fast_agetfield or _fast_fgetfield and then rewrites the | |
| 762 // current bytecode into a pair bytecode; otherwise it rewrites the current | |
| 763 // bytecode into _fast_aload_0 that doesn't do the pair check anymore. | |
| 764 // | |
| 765 // Note: If the next bytecode is _getfield, the rewrite must be delayed, | |
| 766 // otherwise we may miss an opportunity for a pair. | |
| 767 // | |
| 768 // Also rewrite frequent pairs | |
| 769 // aload_0, aload_1 | |
| 770 // aload_0, iload_1 | |
| 771 // These bytecodes with a small amount of code are most profitable to rewrite | |
| 772 if (RewriteFrequentPairs) { | |
| 773 Label rewrite, done; | |
| 774 // get next byte | |
| 775 __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_aload_0))); | |
| 776 | |
| 777 // do actual aload_0 | |
| 778 aload(0); | |
| 779 | |
| 780 // if _getfield then wait with rewrite | |
| 781 __ cmpl(rbx, Bytecodes::_getfield); | |
| 782 __ jcc(Assembler::equal, done); | |
| 783 | |
| 784 // if _igetfield then reqrite to _fast_iaccess_0 | |
| 785 assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
| 786 __ cmpl(rbx, Bytecodes::_fast_igetfield); | |
| 787 __ movl(rcx, Bytecodes::_fast_iaccess_0); | |
| 788 __ jccb(Assembler::equal, rewrite); | |
| 789 | |
| 790 // if _agetfield then reqrite to _fast_aaccess_0 | |
| 791 assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
| 792 __ cmpl(rbx, Bytecodes::_fast_agetfield); | |
| 793 __ movl(rcx, Bytecodes::_fast_aaccess_0); | |
| 794 __ jccb(Assembler::equal, rewrite); | |
| 795 | |
| 796 // if _fgetfield then reqrite to _fast_faccess_0 | |
| 797 assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
| 798 __ cmpl(rbx, Bytecodes::_fast_fgetfield); | |
| 799 __ movl(rcx, Bytecodes::_fast_faccess_0); | |
| 800 __ jccb(Assembler::equal, rewrite); | |
| 801 | |
| 802 // else rewrite to _fast_aload0 | |
| 803 assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
| 804 __ movl(rcx, Bytecodes::_fast_aload_0); | |
| 805 | |
| 806 // rewrite | |
| 807 // rcx: fast bytecode | |
| 808 __ bind(rewrite); | |
| 809 patch_bytecode(Bytecodes::_aload_0, rcx, rbx, false); | |
| 810 | |
| 811 __ bind(done); | |
| 812 } else { | |
| 813 aload(0); | |
| 814 } | |
| 815 } | |
| 816 | |
| 817 void TemplateTable::istore() { | |
| 818 transition(itos, vtos); | |
| 819 locals_index(rbx); | |
| 820 __ movl(iaddress(rbx), rax); | |
| 821 } | |
| 822 | |
| 823 | |
| 824 void TemplateTable::lstore() { | |
| 825 transition(ltos, vtos); | |
| 826 locals_index(rbx); | |
| 304 | 827 __ movptr(laddress(rbx), rax); |
| 828 NOT_LP64(__ movptr(haddress(rbx), rdx)); | |
| 0 | 829 } |
| 830 | |
| 831 | |
| 832 void TemplateTable::fstore() { | |
| 833 transition(ftos, vtos); | |
| 834 locals_index(rbx); | |
| 835 __ fstp_s(faddress(rbx)); | |
| 836 } | |
| 837 | |
| 838 | |
| 839 void TemplateTable::dstore() { | |
| 840 transition(dtos, vtos); | |
| 841 locals_index(rbx); | |
| 1506 | 842 __ fstp_d(daddress(rbx)); |
| 0 | 843 } |
| 844 | |
| 845 | |
| 846 void TemplateTable::astore() { | |
| 847 transition(vtos, vtos); | |
| 1506 | 848 __ pop_ptr(rax); |
| 0 | 849 locals_index(rbx); |
| 304 | 850 __ movptr(aaddress(rbx), rax); |
| 0 | 851 } |
| 852 | |
| 853 | |
| 854 void TemplateTable::wide_istore() { | |
| 855 transition(vtos, vtos); | |
| 856 __ pop_i(rax); | |
| 857 locals_index_wide(rbx); | |
| 858 __ movl(iaddress(rbx), rax); | |
| 859 } | |
| 860 | |
| 861 | |
| 862 void TemplateTable::wide_lstore() { | |
| 863 transition(vtos, vtos); | |
| 864 __ pop_l(rax, rdx); | |
| 865 locals_index_wide(rbx); | |
| 304 | 866 __ movptr(laddress(rbx), rax); |
| 867 NOT_LP64(__ movl(haddress(rbx), rdx)); | |
| 0 | 868 } |
| 869 | |
| 870 | |
| 871 void TemplateTable::wide_fstore() { | |
| 872 wide_istore(); | |
| 873 } | |
| 874 | |
| 875 | |
| 876 void TemplateTable::wide_dstore() { | |
| 877 wide_lstore(); | |
| 878 } | |
| 879 | |
| 880 | |
| 881 void TemplateTable::wide_astore() { | |
| 882 transition(vtos, vtos); | |
| 1506 | 883 __ pop_ptr(rax); |
| 0 | 884 locals_index_wide(rbx); |
| 304 | 885 __ movptr(aaddress(rbx), rax); |
| 0 | 886 } |
| 887 | |
| 888 | |
| 889 void TemplateTable::iastore() { | |
| 890 transition(itos, vtos); | |
| 891 __ pop_i(rbx); | |
| 892 // rax,: value | |
| 893 // rdx: array | |
| 894 index_check(rdx, rbx); // prefer index in rbx, | |
| 895 // rbx,: index | |
| 896 __ movl(Address(rdx, rbx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_INT)), rax); | |
| 897 } | |
| 898 | |
| 899 | |
| 900 void TemplateTable::lastore() { | |
| 901 transition(ltos, vtos); | |
| 902 __ pop_i(rbx); | |
| 903 // rax,: low(value) | |
| 904 // rcx: array | |
| 905 // rdx: high(value) | |
| 906 index_check(rcx, rbx); // prefer index in rbx, | |
| 907 // rbx,: index | |
| 304 | 908 __ movptr(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize), rax); |
| 909 NOT_LP64(__ movl(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize), rdx)); | |
| 0 | 910 } |
| 911 | |
| 912 | |
| 913 void TemplateTable::fastore() { | |
| 914 transition(ftos, vtos); | |
| 915 __ pop_i(rbx); | |
| 916 // rdx: array | |
| 917 // st0: value | |
| 918 index_check(rdx, rbx); // prefer index in rbx, | |
| 919 // rbx,: index | |
| 920 __ fstp_s(Address(rdx, rbx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT))); | |
| 921 } | |
| 922 | |
| 923 | |
| 924 void TemplateTable::dastore() { | |
| 925 transition(dtos, vtos); | |
| 926 __ pop_i(rbx); | |
| 927 // rdx: array | |
| 928 // st0: value | |
| 929 index_check(rdx, rbx); // prefer index in rbx, | |
| 930 // rbx,: index | |
| 931 __ fstp_d(Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); | |
| 932 } | |
| 933 | |
| 934 | |
| 935 void TemplateTable::aastore() { | |
| 936 Label is_null, ok_is_subtype, done; | |
| 937 transition(vtos, vtos); | |
| 938 // stack: ..., array, index, value | |
| 304 | 939 __ movptr(rax, at_tos()); // Value |
| 0 | 940 __ movl(rcx, at_tos_p1()); // Index |
| 304 | 941 __ movptr(rdx, at_tos_p2()); // Array |
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942 |
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943 Address element_address(rdx, rcx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_OBJECT)); |
| 0 | 944 index_check_without_pop(rdx, rcx); // kills rbx, |
| 945 // do array store check - check for NULL value first | |
| 304 | 946 __ testptr(rax, rax); |
| 0 | 947 __ jcc(Assembler::zero, is_null); |
| 948 | |
| 949 // Move subklass into EBX | |
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950 __ load_klass(rbx, rax); |
| 0 | 951 // Move superklass into EAX |
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952 __ load_klass(rax, rdx); |
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953 __ movptr(rax, Address(rax, ObjArrayKlass::element_klass_offset())); |
| 304 | 954 // Compress array+index*wordSize+12 into a single register. Frees ECX. |
| 362 | 955 __ lea(rdx, element_address); |
| 0 | 956 |
| 957 // Generate subtype check. Blows ECX. Resets EDI to locals. | |
| 958 // Superklass in EAX. Subklass in EBX. | |
| 959 __ gen_subtype_check( rbx, ok_is_subtype ); | |
| 960 | |
| 961 // Come here on failure | |
| 962 // object is at TOS | |
| 963 __ jump(ExternalAddress(Interpreter::_throw_ArrayStoreException_entry)); | |
| 964 | |
| 965 // Come here on success | |
| 966 __ bind(ok_is_subtype); | |
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967 |
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968 // Get the value to store |
| 362 | 969 __ movptr(rax, at_rsp()); |
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970 // and store it with appropriate barrier |
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971 do_oop_store(_masm, Address(rdx, 0), rax, _bs->kind(), true); |
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972 |
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973 __ jmp(done); |
| 0 | 974 |
| 975 // Have a NULL in EAX, EDX=array, ECX=index. Store NULL at ary[idx] | |
| 976 __ bind(is_null); | |
| 977 __ profile_null_seen(rbx); | |
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978 |
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979 // Store NULL, (noreg means NULL to do_oop_store) |
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changeset
|
980 do_oop_store(_masm, element_address, noreg, _bs->kind(), true); |
| 0 | 981 |
| 982 // Pop stack arguments | |
| 983 __ bind(done); | |
| 1506 | 984 __ addptr(rsp, 3 * Interpreter::stackElementSize); |
| 0 | 985 } |
| 986 | |
| 987 | |
| 988 void TemplateTable::bastore() { | |
| 989 transition(itos, vtos); | |
| 990 __ pop_i(rbx); | |
| 991 // rax,: value | |
| 992 // rdx: array | |
| 993 index_check(rdx, rbx); // prefer index in rbx, | |
| 994 // rbx,: index | |
| 995 __ movb(Address(rdx, rbx, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE)), rax); | |
| 996 } | |
| 997 | |
| 998 | |
| 999 void TemplateTable::castore() { | |
| 1000 transition(itos, vtos); | |
| 1001 __ pop_i(rbx); | |
| 1002 // rax,: value | |
| 1003 // rdx: array | |
| 1004 index_check(rdx, rbx); // prefer index in rbx, | |
| 1005 // rbx,: index | |
| 1006 __ movw(Address(rdx, rbx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)), rax); | |
| 1007 } | |
| 1008 | |
| 1009 | |
| 1010 void TemplateTable::sastore() { | |
| 1011 castore(); | |
| 1012 } | |
| 1013 | |
| 1014 | |
| 1015 void TemplateTable::istore(int n) { | |
| 1016 transition(itos, vtos); | |
| 1017 __ movl(iaddress(n), rax); | |
| 1018 } | |
| 1019 | |
| 1020 | |
| 1021 void TemplateTable::lstore(int n) { | |
| 1022 transition(ltos, vtos); | |
| 304 | 1023 __ movptr(laddress(n), rax); |
| 1024 NOT_LP64(__ movptr(haddress(n), rdx)); | |
| 0 | 1025 } |
| 1026 | |
| 1027 | |
| 1028 void TemplateTable::fstore(int n) { | |
| 1029 transition(ftos, vtos); | |
| 1030 __ fstp_s(faddress(n)); | |
| 1031 } | |
| 1032 | |
| 1033 | |
| 1034 void TemplateTable::dstore(int n) { | |
| 1035 transition(dtos, vtos); | |
| 1506 | 1036 __ fstp_d(daddress(n)); |
| 0 | 1037 } |
| 1038 | |
| 1039 | |
| 1040 void TemplateTable::astore(int n) { | |
| 1041 transition(vtos, vtos); | |
| 1506 | 1042 __ pop_ptr(rax); |
| 304 | 1043 __ movptr(aaddress(n), rax); |
| 0 | 1044 } |
| 1045 | |
| 1046 | |
| 1047 void TemplateTable::pop() { | |
| 1048 transition(vtos, vtos); | |
| 1506 | 1049 __ addptr(rsp, Interpreter::stackElementSize); |
| 0 | 1050 } |
| 1051 | |
| 1052 | |
| 1053 void TemplateTable::pop2() { | |
| 1054 transition(vtos, vtos); | |
| 1506 | 1055 __ addptr(rsp, 2*Interpreter::stackElementSize); |
| 0 | 1056 } |
| 1057 | |
| 1058 | |
| 1059 void TemplateTable::dup() { | |
| 1060 transition(vtos, vtos); | |
| 1061 // stack: ..., a | |
| 1506 | 1062 __ load_ptr(0, rax); |
| 1063 __ push_ptr(rax); | |
| 0 | 1064 // stack: ..., a, a |
| 1065 } | |
| 1066 | |
| 1067 | |
| 1068 void TemplateTable::dup_x1() { | |
| 1069 transition(vtos, vtos); | |
| 1070 // stack: ..., a, b | |
| 1506 | 1071 __ load_ptr( 0, rax); // load b |
| 1072 __ load_ptr( 1, rcx); // load a | |
| 1073 __ store_ptr(1, rax); // store b | |
| 1074 __ store_ptr(0, rcx); // store a | |
| 1075 __ push_ptr(rax); // push b | |
| 0 | 1076 // stack: ..., b, a, b |
| 1077 } | |
| 1078 | |
| 1079 | |
| 1080 void TemplateTable::dup_x2() { | |
| 1081 transition(vtos, vtos); | |
| 1082 // stack: ..., a, b, c | |
| 1506 | 1083 __ load_ptr( 0, rax); // load c |
| 1084 __ load_ptr( 2, rcx); // load a | |
| 1085 __ store_ptr(2, rax); // store c in a | |
| 1086 __ push_ptr(rax); // push c | |
| 0 | 1087 // stack: ..., c, b, c, c |
| 1506 | 1088 __ load_ptr( 2, rax); // load b |
| 1089 __ store_ptr(2, rcx); // store a in b | |
| 0 | 1090 // stack: ..., c, a, c, c |
| 1506 | 1091 __ store_ptr(1, rax); // store b in c |
| 0 | 1092 // stack: ..., c, a, b, c |
| 1093 } | |
| 1094 | |
| 1095 | |
| 1096 void TemplateTable::dup2() { | |
| 1097 transition(vtos, vtos); | |
| 1098 // stack: ..., a, b | |
| 1506 | 1099 __ load_ptr(1, rax); // load a |
| 1100 __ push_ptr(rax); // push a | |
| 1101 __ load_ptr(1, rax); // load b | |
| 1102 __ push_ptr(rax); // push b | |
| 0 | 1103 // stack: ..., a, b, a, b |
| 1104 } | |
| 1105 | |
| 1106 | |
| 1107 void TemplateTable::dup2_x1() { | |
| 1108 transition(vtos, vtos); | |
| 1109 // stack: ..., a, b, c | |
| 1506 | 1110 __ load_ptr( 0, rcx); // load c |
| 1111 __ load_ptr( 1, rax); // load b | |
| 1112 __ push_ptr(rax); // push b | |
| 1113 __ push_ptr(rcx); // push c | |
| 0 | 1114 // stack: ..., a, b, c, b, c |
| 1506 | 1115 __ store_ptr(3, rcx); // store c in b |
| 0 | 1116 // stack: ..., a, c, c, b, c |
| 1506 | 1117 __ load_ptr( 4, rcx); // load a |
| 1118 __ store_ptr(2, rcx); // store a in 2nd c | |
| 0 | 1119 // stack: ..., a, c, a, b, c |
| 1506 | 1120 __ store_ptr(4, rax); // store b in a |
| 0 | 1121 // stack: ..., b, c, a, b, c |
| 1122 // stack: ..., b, c, a, b, c | |
| 1123 } | |
| 1124 | |
| 1125 | |
| 1126 void TemplateTable::dup2_x2() { | |
| 1127 transition(vtos, vtos); | |
| 1128 // stack: ..., a, b, c, d | |
| 1506 | 1129 __ load_ptr( 0, rcx); // load d |
| 1130 __ load_ptr( 1, rax); // load c | |
| 1131 __ push_ptr(rax); // push c | |
| 1132 __ push_ptr(rcx); // push d | |
| 0 | 1133 // stack: ..., a, b, c, d, c, d |
| 1506 | 1134 __ load_ptr( 4, rax); // load b |
| 1135 __ store_ptr(2, rax); // store b in d | |
| 1136 __ store_ptr(4, rcx); // store d in b | |
| 0 | 1137 // stack: ..., a, d, c, b, c, d |
| 1506 | 1138 __ load_ptr( 5, rcx); // load a |
| 1139 __ load_ptr( 3, rax); // load c | |
| 1140 __ store_ptr(3, rcx); // store a in c | |
| 1141 __ store_ptr(5, rax); // store c in a | |
| 0 | 1142 // stack: ..., c, d, a, b, c, d |
| 1143 // stack: ..., c, d, a, b, c, d | |
| 1144 } | |
| 1145 | |
| 1146 | |
| 1147 void TemplateTable::swap() { | |
| 1148 transition(vtos, vtos); | |
| 1149 // stack: ..., a, b | |
| 1506 | 1150 __ load_ptr( 1, rcx); // load a |
| 1151 __ load_ptr( 0, rax); // load b | |
| 1152 __ store_ptr(0, rcx); // store a in b | |
| 1153 __ store_ptr(1, rax); // store b in a | |
| 0 | 1154 // stack: ..., b, a |
| 1155 } | |
| 1156 | |
| 1157 | |
| 1158 void TemplateTable::iop2(Operation op) { | |
| 1159 transition(itos, itos); | |
| 1160 switch (op) { | |
| 1506 | 1161 case add : __ pop_i(rdx); __ addl (rax, rdx); break; |
| 304 | 1162 case sub : __ mov(rdx, rax); __ pop_i(rax); __ subl (rax, rdx); break; |
| 1506 | 1163 case mul : __ pop_i(rdx); __ imull(rax, rdx); break; |
| 1164 case _and : __ pop_i(rdx); __ andl (rax, rdx); break; | |
| 1165 case _or : __ pop_i(rdx); __ orl (rax, rdx); break; | |
| 1166 case _xor : __ pop_i(rdx); __ xorl (rax, rdx); break; | |
| 304 | 1167 case shl : __ mov(rcx, rax); __ pop_i(rax); __ shll (rax); break; // implicit masking of lower 5 bits by Intel shift instr. |
| 1168 case shr : __ mov(rcx, rax); __ pop_i(rax); __ sarl (rax); break; // implicit masking of lower 5 bits by Intel shift instr. | |
| 1169 case ushr : __ mov(rcx, rax); __ pop_i(rax); __ shrl (rax); break; // implicit masking of lower 5 bits by Intel shift instr. | |
| 0 | 1170 default : ShouldNotReachHere(); |
| 1171 } | |
| 1172 } | |
| 1173 | |
| 1174 | |
| 1175 void TemplateTable::lop2(Operation op) { | |
| 1176 transition(ltos, ltos); | |
| 1177 __ pop_l(rbx, rcx); | |
| 1178 switch (op) { | |
| 1506 | 1179 case add : __ addl(rax, rbx); __ adcl(rdx, rcx); break; |
| 1180 case sub : __ subl(rbx, rax); __ sbbl(rcx, rdx); | |
| 1181 __ mov (rax, rbx); __ mov (rdx, rcx); break; | |
| 1182 case _and : __ andl(rax, rbx); __ andl(rdx, rcx); break; | |
| 1183 case _or : __ orl (rax, rbx); __ orl (rdx, rcx); break; | |
| 1184 case _xor : __ xorl(rax, rbx); __ xorl(rdx, rcx); break; | |
| 1185 default : ShouldNotReachHere(); | |
| 0 | 1186 } |
| 1187 } | |
| 1188 | |
| 1189 | |
| 1190 void TemplateTable::idiv() { | |
| 1191 transition(itos, itos); | |
| 304 | 1192 __ mov(rcx, rax); |
| 0 | 1193 __ pop_i(rax); |
| 1194 // Note: could xor rax, and rcx and compare with (-1 ^ min_int). If | |
| 1195 // they are not equal, one could do a normal division (no correction | |
| 1196 // needed), which may speed up this implementation for the common case. | |
| 1197 // (see also JVM spec., p.243 & p.271) | |
| 1198 __ corrected_idivl(rcx); | |
| 1199 } | |
| 1200 | |
| 1201 | |
| 1202 void TemplateTable::irem() { | |
| 1203 transition(itos, itos); | |
| 304 | 1204 __ mov(rcx, rax); |
| 0 | 1205 __ pop_i(rax); |
| 1206 // Note: could xor rax, and rcx and compare with (-1 ^ min_int). If | |
| 1207 // they are not equal, one could do a normal division (no correction | |
| 1208 // needed), which may speed up this implementation for the common case. | |
| 1209 // (see also JVM spec., p.243 & p.271) | |
| 1210 __ corrected_idivl(rcx); | |
| 304 | 1211 __ mov(rax, rdx); |
| 0 | 1212 } |
| 1213 | |
| 1214 | |
| 1215 void TemplateTable::lmul() { | |
| 1216 transition(ltos, ltos); | |
| 1217 __ pop_l(rbx, rcx); | |
| 304 | 1218 __ push(rcx); __ push(rbx); |
| 1219 __ push(rdx); __ push(rax); | |
| 0 | 1220 __ lmul(2 * wordSize, 0); |
| 304 | 1221 __ addptr(rsp, 4 * wordSize); // take off temporaries |
| 0 | 1222 } |
| 1223 | |
| 1224 | |
| 1225 void TemplateTable::ldiv() { | |
| 1226 transition(ltos, ltos); | |
| 1227 __ pop_l(rbx, rcx); | |
| 304 | 1228 __ push(rcx); __ push(rbx); |
| 1229 __ push(rdx); __ push(rax); | |
| 0 | 1230 // check if y = 0 |
| 1231 __ orl(rax, rdx); | |
| 1232 __ jump_cc(Assembler::zero, | |
| 1233 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
| 1234 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::ldiv)); | |
| 304 | 1235 __ addptr(rsp, 4 * wordSize); // take off temporaries |
| 0 | 1236 } |
| 1237 | |
| 1238 | |
| 1239 void TemplateTable::lrem() { | |
| 1240 transition(ltos, ltos); | |
| 1241 __ pop_l(rbx, rcx); | |
| 304 | 1242 __ push(rcx); __ push(rbx); |
| 1243 __ push(rdx); __ push(rax); | |
| 0 | 1244 // check if y = 0 |
| 1245 __ orl(rax, rdx); | |
| 1246 __ jump_cc(Assembler::zero, | |
| 1247 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
| 1248 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::lrem)); | |
| 304 | 1249 __ addptr(rsp, 4 * wordSize); |
| 0 | 1250 } |
| 1251 | |
| 1252 | |
| 1253 void TemplateTable::lshl() { | |
| 1254 transition(itos, ltos); | |
| 1255 __ movl(rcx, rax); // get shift count | |
| 1256 __ pop_l(rax, rdx); // get shift value | |
| 1257 __ lshl(rdx, rax); | |
| 1258 } | |
| 1259 | |
| 1260 | |
| 1261 void TemplateTable::lshr() { | |
| 1262 transition(itos, ltos); | |
| 304 | 1263 __ mov(rcx, rax); // get shift count |
| 0 | 1264 __ pop_l(rax, rdx); // get shift value |
| 1265 __ lshr(rdx, rax, true); | |
| 1266 } | |
| 1267 | |
| 1268 | |
| 1269 void TemplateTable::lushr() { | |
| 1270 transition(itos, ltos); | |
| 304 | 1271 __ mov(rcx, rax); // get shift count |
| 0 | 1272 __ pop_l(rax, rdx); // get shift value |
| 1273 __ lshr(rdx, rax); | |
| 1274 } | |
| 1275 | |
| 1276 | |
| 1277 void TemplateTable::fop2(Operation op) { | |
| 1278 transition(ftos, ftos); | |
| 1279 switch (op) { | |
| 1280 case add: __ fadd_s (at_rsp()); break; | |
| 1281 case sub: __ fsubr_s(at_rsp()); break; | |
| 1282 case mul: __ fmul_s (at_rsp()); break; | |
| 1283 case div: __ fdivr_s(at_rsp()); break; | |
| 1284 case rem: __ fld_s (at_rsp()); __ fremr(rax); break; | |
| 1285 default : ShouldNotReachHere(); | |
| 1286 } | |
| 1287 __ f2ieee(); | |
| 304 | 1288 __ pop(rax); // pop float thing off |
| 0 | 1289 } |
| 1290 | |
| 1291 | |
| 1292 void TemplateTable::dop2(Operation op) { | |
| 1293 transition(dtos, dtos); | |
| 1294 | |
| 1295 switch (op) { | |
| 1296 case add: __ fadd_d (at_rsp()); break; | |
| 1297 case sub: __ fsubr_d(at_rsp()); break; | |
| 1298 case mul: { | |
| 1299 Label L_strict; | |
| 1300 Label L_join; | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1301 const Address access_flags (rcx, Method::access_flags_offset()); |
| 0 | 1302 __ get_method(rcx); |
| 1303 __ movl(rcx, access_flags); | |
| 1304 __ testl(rcx, JVM_ACC_STRICT); | |
| 1305 __ jccb(Assembler::notZero, L_strict); | |
| 1306 __ fmul_d (at_rsp()); | |
| 1307 __ jmpb(L_join); | |
| 1308 __ bind(L_strict); | |
| 1309 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); | |
| 1310 __ fmulp(); | |
| 1311 __ fmul_d (at_rsp()); | |
| 1312 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); | |
| 1313 __ fmulp(); | |
| 1314 __ bind(L_join); | |
| 1315 break; | |
| 1316 } | |
| 1317 case div: { | |
| 1318 Label L_strict; | |
| 1319 Label L_join; | |
|
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da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
1320 const Address access_flags (rcx, Method::access_flags_offset()); |
| 0 | 1321 __ get_method(rcx); |
| 1322 __ movl(rcx, access_flags); | |
| 1323 __ testl(rcx, JVM_ACC_STRICT); | |
| 1324 __ jccb(Assembler::notZero, L_strict); | |
| 1325 __ fdivr_d(at_rsp()); | |
| 1326 __ jmp(L_join); | |
| 1327 __ bind(L_strict); | |
| 1328 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); | |
| 1329 __ fmul_d (at_rsp()); | |
| 1330 __ fdivrp(); | |
| 1331 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); | |
| 1332 __ fmulp(); | |
| 1333 __ bind(L_join); | |
| 1334 break; | |
| 1335 } | |
| 1336 case rem: __ fld_d (at_rsp()); __ fremr(rax); break; | |
| 1337 default : ShouldNotReachHere(); | |
| 1338 } | |
| 1339 __ d2ieee(); | |
| 1340 // Pop double precision number from rsp. | |
| 304 | 1341 __ pop(rax); |
| 1342 __ pop(rdx); | |
| 0 | 1343 } |
| 1344 | |
| 1345 | |
| 1346 void TemplateTable::ineg() { | |
| 1347 transition(itos, itos); | |
| 1348 __ negl(rax); | |
| 1349 } | |
| 1350 | |
| 1351 | |
| 1352 void TemplateTable::lneg() { | |
| 1353 transition(ltos, ltos); | |
| 1354 __ lneg(rdx, rax); | |
| 1355 } | |
| 1356 | |
| 1357 | |
| 1358 void TemplateTable::fneg() { | |
| 1359 transition(ftos, ftos); | |
| 1360 __ fchs(); | |
| 1361 } | |
| 1362 | |
| 1363 | |
| 1364 void TemplateTable::dneg() { | |
| 1365 transition(dtos, dtos); | |
| 1366 __ fchs(); | |
| 1367 } | |
| 1368 | |
| 1369 | |
| 1370 void TemplateTable::iinc() { | |
| 1371 transition(vtos, vtos); | |
| 1372 __ load_signed_byte(rdx, at_bcp(2)); // get constant | |
| 1373 locals_index(rbx); | |
| 1374 __ addl(iaddress(rbx), rdx); | |
| 1375 } | |
| 1376 | |
| 1377 | |
| 1378 void TemplateTable::wide_iinc() { | |
| 1379 transition(vtos, vtos); | |
| 1380 __ movl(rdx, at_bcp(4)); // get constant | |
| 1381 locals_index_wide(rbx); | |
| 304 | 1382 __ bswapl(rdx); // swap bytes & sign-extend constant |
| 0 | 1383 __ sarl(rdx, 16); |
| 1384 __ addl(iaddress(rbx), rdx); | |
| 1385 // Note: should probably use only one movl to get both | |
| 1386 // the index and the constant -> fix this | |
| 1387 } | |
| 1388 | |
| 1389 | |
| 1390 void TemplateTable::convert() { | |
| 1391 // Checking | |
| 1392 #ifdef ASSERT | |
| 1393 { TosState tos_in = ilgl; | |
| 1394 TosState tos_out = ilgl; | |
| 1395 switch (bytecode()) { | |
| 1396 case Bytecodes::_i2l: // fall through | |
| 1397 case Bytecodes::_i2f: // fall through | |
| 1398 case Bytecodes::_i2d: // fall through | |
| 1399 case Bytecodes::_i2b: // fall through | |
| 1400 case Bytecodes::_i2c: // fall through | |
| 1401 case Bytecodes::_i2s: tos_in = itos; break; | |
| 1402 case Bytecodes::_l2i: // fall through | |
| 1403 case Bytecodes::_l2f: // fall through | |
| 1404 case Bytecodes::_l2d: tos_in = ltos; break; | |
| 1405 case Bytecodes::_f2i: // fall through | |
| 1406 case Bytecodes::_f2l: // fall through | |
| 1407 case Bytecodes::_f2d: tos_in = ftos; break; | |
| 1408 case Bytecodes::_d2i: // fall through | |
| 1409 case Bytecodes::_d2l: // fall through | |
| 1410 case Bytecodes::_d2f: tos_in = dtos; break; | |
| 1411 default : ShouldNotReachHere(); | |
| 1412 } | |
| 1413 switch (bytecode()) { | |
| 1414 case Bytecodes::_l2i: // fall through | |
| 1415 case Bytecodes::_f2i: // fall through | |
| 1416 case Bytecodes::_d2i: // fall through | |
| 1417 case Bytecodes::_i2b: // fall through | |
| 1418 case Bytecodes::_i2c: // fall through | |
| 1419 case Bytecodes::_i2s: tos_out = itos; break; | |
| 1420 case Bytecodes::_i2l: // fall through | |
| 1421 case Bytecodes::_f2l: // fall through | |
| 1422 case Bytecodes::_d2l: tos_out = ltos; break; | |
| 1423 case Bytecodes::_i2f: // fall through | |
| 1424 case Bytecodes::_l2f: // fall through | |
| 1425 case Bytecodes::_d2f: tos_out = ftos; break; | |
| 1426 case Bytecodes::_i2d: // fall through | |
| 1427 case Bytecodes::_l2d: // fall through | |
| 1428 case Bytecodes::_f2d: tos_out = dtos; break; | |
| 1429 default : ShouldNotReachHere(); | |
| 1430 } | |
| 1431 transition(tos_in, tos_out); | |
| 1432 } | |
| 1433 #endif // ASSERT | |
| 1434 | |
| 1435 // Conversion | |
| 304 | 1436 // (Note: use push(rcx)/pop(rcx) for 1/2-word stack-ptr manipulation) |
| 0 | 1437 switch (bytecode()) { |
| 1438 case Bytecodes::_i2l: | |
| 1439 __ extend_sign(rdx, rax); | |
| 1440 break; | |
| 1441 case Bytecodes::_i2f: | |
| 304 | 1442 __ push(rax); // store int on tos |
| 0 | 1443 __ fild_s(at_rsp()); // load int to ST0 |
| 1444 __ f2ieee(); // truncate to float size | |
| 304 | 1445 __ pop(rcx); // adjust rsp |
| 0 | 1446 break; |
| 1447 case Bytecodes::_i2d: | |
| 304 | 1448 __ push(rax); // add one slot for d2ieee() |
| 1449 __ push(rax); // store int on tos | |
| 0 | 1450 __ fild_s(at_rsp()); // load int to ST0 |
| 1451 __ d2ieee(); // truncate to double size | |
| 304 | 1452 __ pop(rcx); // adjust rsp |
| 1453 __ pop(rcx); | |
| 0 | 1454 break; |
| 1455 case Bytecodes::_i2b: | |
| 1456 __ shll(rax, 24); // truncate upper 24 bits | |
| 1457 __ sarl(rax, 24); // and sign-extend byte | |
| 304 | 1458 LP64_ONLY(__ movsbl(rax, rax)); |
| 0 | 1459 break; |
| 1460 case Bytecodes::_i2c: | |
| 1461 __ andl(rax, 0xFFFF); // truncate upper 16 bits | |
| 304 | 1462 LP64_ONLY(__ movzwl(rax, rax)); |
| 0 | 1463 break; |
| 1464 case Bytecodes::_i2s: | |
| 1465 __ shll(rax, 16); // truncate upper 16 bits | |
| 1466 __ sarl(rax, 16); // and sign-extend short | |
| 304 | 1467 LP64_ONLY(__ movswl(rax, rax)); |
| 0 | 1468 break; |
| 1469 case Bytecodes::_l2i: | |
| 1470 /* nothing to do */ | |
| 1471 break; | |
| 1472 case Bytecodes::_l2f: | |
| 304 | 1473 __ push(rdx); // store long on tos |
| 1474 __ push(rax); | |
| 0 | 1475 __ fild_d(at_rsp()); // load long to ST0 |
| 1476 __ f2ieee(); // truncate to float size | |
| 304 | 1477 __ pop(rcx); // adjust rsp |
| 1478 __ pop(rcx); | |
| 0 | 1479 break; |
| 1480 case Bytecodes::_l2d: | |
| 304 | 1481 __ push(rdx); // store long on tos |
| 1482 __ push(rax); | |
| 0 | 1483 __ fild_d(at_rsp()); // load long to ST0 |
| 1484 __ d2ieee(); // truncate to double size | |
| 304 | 1485 __ pop(rcx); // adjust rsp |
| 1486 __ pop(rcx); | |
| 0 | 1487 break; |
| 1488 case Bytecodes::_f2i: | |
| 304 | 1489 __ push(rcx); // reserve space for argument |
| 0 | 1490 __ fstp_s(at_rsp()); // pass float argument on stack |
| 1491 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1); | |
| 1492 break; | |
| 1493 case Bytecodes::_f2l: | |
| 304 | 1494 __ push(rcx); // reserve space for argument |
| 0 | 1495 __ fstp_s(at_rsp()); // pass float argument on stack |
| 1496 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1); | |
| 1497 break; | |
| 1498 case Bytecodes::_f2d: | |
| 1499 /* nothing to do */ | |
| 1500 break; | |
| 1501 case Bytecodes::_d2i: | |
| 304 | 1502 __ push(rcx); // reserve space for argument |
| 1503 __ push(rcx); | |
| 0 | 1504 __ fstp_d(at_rsp()); // pass double argument on stack |
| 1505 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 2); | |
| 1506 break; | |
| 1507 case Bytecodes::_d2l: | |
| 304 | 1508 __ push(rcx); // reserve space for argument |
| 1509 __ push(rcx); | |
| 0 | 1510 __ fstp_d(at_rsp()); // pass double argument on stack |
| 1511 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 2); | |
| 1512 break; | |
| 1513 case Bytecodes::_d2f: | |
| 304 | 1514 __ push(rcx); // reserve space for f2ieee() |
| 0 | 1515 __ f2ieee(); // truncate to float size |
| 304 | 1516 __ pop(rcx); // adjust rsp |
| 0 | 1517 break; |
| 1518 default : | |
| 1519 ShouldNotReachHere(); | |
| 1520 } | |
| 1521 } | |
| 1522 | |
| 1523 | |
| 1524 void TemplateTable::lcmp() { | |
| 1525 transition(ltos, itos); | |
| 1526 // y = rdx:rax | |
| 1527 __ pop_l(rbx, rcx); // get x = rcx:rbx | |
| 1528 __ lcmp2int(rcx, rbx, rdx, rax);// rcx := cmp(x, y) | |
| 304 | 1529 __ mov(rax, rcx); |
| 0 | 1530 } |
| 1531 | |
| 1532 | |
| 1533 void TemplateTable::float_cmp(bool is_float, int unordered_result) { | |
| 1534 if (is_float) { | |
| 1535 __ fld_s(at_rsp()); | |
| 1536 } else { | |
| 1537 __ fld_d(at_rsp()); | |
| 304 | 1538 __ pop(rdx); |
| 0 | 1539 } |
| 304 | 1540 __ pop(rcx); |
| 0 | 1541 __ fcmp2int(rax, unordered_result < 0); |
| 1542 } | |
| 1543 | |
| 1544 | |
| 1545 void TemplateTable::branch(bool is_jsr, bool is_wide) { | |
| 1546 __ get_method(rcx); // ECX holds method | |
| 1547 __ profile_taken_branch(rax,rbx); // EAX holds updated MDP, EBX holds bumped taken count | |
| 1548 | |
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1549 const ByteSize be_offset = MethodCounters::backedge_counter_offset() + |
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1550 InvocationCounter::counter_offset(); |
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1551 const ByteSize inv_offset = MethodCounters::invocation_counter_offset() + |
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1552 InvocationCounter::counter_offset(); |
| 0 | 1553 |
| 1554 // Load up EDX with the branch displacement | |
| 1555 __ movl(rdx, at_bcp(1)); | |
| 304 | 1556 __ bswapl(rdx); |
| 0 | 1557 if (!is_wide) __ sarl(rdx, 16); |
| 304 | 1558 LP64_ONLY(__ movslq(rdx, rdx)); |
| 1559 | |
| 0 | 1560 |
| 1561 // Handle all the JSR stuff here, then exit. | |
| 1562 // It's much shorter and cleaner than intermingling with the | |
| 605 | 1563 // non-JSR normal-branch stuff occurring below. |
| 0 | 1564 if (is_jsr) { |
| 1565 // Pre-load the next target bytecode into EBX | |
| 1566 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1, 0)); | |
| 1567 | |
| 1568 // compute return address as bci in rax, | |
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1569 __ lea(rax, at_bcp((is_wide ? 5 : 3) - in_bytes(ConstMethod::codes_offset()))); |
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1570 __ subptr(rax, Address(rcx, Method::const_offset())); |
| 362 | 1571 // Adjust the bcp in RSI by the displacement in EDX |
| 304 | 1572 __ addptr(rsi, rdx); |
| 0 | 1573 // Push return address |
| 1574 __ push_i(rax); | |
| 1575 // jsr returns vtos | |
| 1576 __ dispatch_only_noverify(vtos); | |
| 1577 return; | |
| 1578 } | |
| 1579 | |
| 1580 // Normal (non-jsr) branch handling | |
| 1581 | |
| 362 | 1582 // Adjust the bcp in RSI by the displacement in EDX |
| 304 | 1583 __ addptr(rsi, rdx); |
| 0 | 1584 |
| 1585 assert(UseLoopCounter || !UseOnStackReplacement, "on-stack-replacement requires loop counters"); | |
| 1586 Label backedge_counter_overflow; | |
| 1587 Label profile_method; | |
| 1588 Label dispatch; | |
| 1589 if (UseLoopCounter) { | |
| 1590 // increment backedge counter for backward branches | |
| 1591 // rax,: MDO | |
| 1592 // rbx,: MDO bumped taken-count | |
| 1593 // rcx: method | |
| 1594 // rdx: target offset | |
| 1595 // rsi: target bcp | |
| 1596 // rdi: locals pointer | |
| 1597 __ testl(rdx, rdx); // check if forward or backward branch | |
| 1598 __ jcc(Assembler::positive, dispatch); // count only if backward branch | |
| 1599 | |
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1600 // check if MethodCounters exists |
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1601 Label has_counters; |
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1602 __ movptr(rax, Address(rcx, Method::method_counters_offset())); |
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1603 __ testptr(rax, rax); |
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1604 __ jcc(Assembler::notZero, has_counters); |
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1605 __ push(rdx); |
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1606 __ push(rcx); |
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1607 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::build_method_counters), |
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1608 rcx); |
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1609 __ pop(rcx); |
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1610 __ pop(rdx); |
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1611 __ movptr(rax, Address(rcx, Method::method_counters_offset())); |
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1612 __ testptr(rax, rax); |
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1613 __ jcc(Assembler::zero, dispatch); |
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1614 __ bind(has_counters); |
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1615 |
| 1783 | 1616 if (TieredCompilation) { |
| 1617 Label no_mdo; | |
| 1618 int increment = InvocationCounter::count_increment; | |
| 1619 int mask = ((1 << Tier0BackedgeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
| 1620 if (ProfileInterpreter) { | |
| 1621 // Are we profiling? | |
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1622 __ movptr(rbx, Address(rcx, in_bytes(Method::method_data_offset()))); |
| 1783 | 1623 __ testptr(rbx, rbx); |
| 1624 __ jccb(Assembler::zero, no_mdo); | |
| 1625 // Increment the MDO backedge counter | |
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1626 const Address mdo_backedge_counter(rbx, in_bytes(MethodData::backedge_counter_offset()) + |
| 1783 | 1627 in_bytes(InvocationCounter::counter_offset())); |
| 1628 __ increment_mask_and_jump(mdo_backedge_counter, increment, mask, | |
| 1629 rax, false, Assembler::zero, &backedge_counter_overflow); | |
| 1630 __ jmp(dispatch); | |
| 0 | 1631 } |
| 1783 | 1632 __ bind(no_mdo); |
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1633 // Increment backedge counter in MethodCounters* |
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1634 __ movptr(rcx, Address(rcx, Method::method_counters_offset())); |
| 1783 | 1635 __ increment_mask_and_jump(Address(rcx, be_offset), increment, mask, |
| 1636 rax, false, Assembler::zero, &backedge_counter_overflow); | |
| 0 | 1637 } else { |
| 1783 | 1638 // increment counter |
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1639 __ movptr(rcx, Address(rcx, Method::method_counters_offset())); |
| 1783 | 1640 __ movl(rax, Address(rcx, be_offset)); // load backedge counter |
| 1641 __ incrementl(rax, InvocationCounter::count_increment); // increment counter | |
| 1642 __ movl(Address(rcx, be_offset), rax); // store counter | |
| 1643 | |
| 1644 __ movl(rax, Address(rcx, inv_offset)); // load invocation counter | |
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1645 |
| 1783 | 1646 __ andl(rax, InvocationCounter::count_mask_value); // and the status bits |
| 1647 __ addl(rax, Address(rcx, be_offset)); // add both counters | |
| 1648 | |
| 1649 if (ProfileInterpreter) { | |
| 1650 // Test to see if we should create a method data oop | |
| 0 | 1651 __ cmp32(rax, |
| 1783 | 1652 ExternalAddress((address) &InvocationCounter::InterpreterProfileLimit)); |
| 1653 __ jcc(Assembler::less, dispatch); | |
| 1654 | |
| 1655 // if no method data exists, go to profile method | |
| 1656 __ test_method_data_pointer(rax, profile_method); | |
| 1657 | |
| 1658 if (UseOnStackReplacement) { | |
| 1659 // check for overflow against rbx, which is the MDO taken count | |
| 1660 __ cmp32(rbx, | |
| 1661 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
| 1662 __ jcc(Assembler::below, dispatch); | |
| 1663 | |
| 1664 // When ProfileInterpreter is on, the backedge_count comes from the | |
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1665 // MethodData*, which value does not get reset on the call to |
| 1783 | 1666 // frequency_counter_overflow(). To avoid excessive calls to the overflow |
| 1667 // routine while the method is being compiled, add a second test to make | |
| 1668 // sure the overflow function is called only once every overflow_frequency. | |
| 1669 const int overflow_frequency = 1024; | |
| 1670 __ andptr(rbx, overflow_frequency-1); | |
| 1671 __ jcc(Assembler::zero, backedge_counter_overflow); | |
| 1672 } | |
| 1673 } else { | |
| 1674 if (UseOnStackReplacement) { | |
| 1675 // check for overflow against rax, which is the sum of the counters | |
| 1676 __ cmp32(rax, | |
| 1677 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
| 1678 __ jcc(Assembler::aboveEqual, backedge_counter_overflow); | |
| 1679 | |
| 1680 } | |
| 0 | 1681 } |
| 1682 } | |
| 1683 __ bind(dispatch); | |
| 1684 } | |
| 1685 | |
| 1686 // Pre-load the next target bytecode into EBX | |
| 1687 __ load_unsigned_byte(rbx, Address(rsi, 0)); | |
| 1688 | |
| 1689 // continue with the bytecode @ target | |
| 1690 // rax,: return bci for jsr's, unused otherwise | |
| 1691 // rbx,: target bytecode | |
| 1692 // rsi: target bcp | |
| 1693 __ dispatch_only(vtos); | |
| 1694 | |
| 1695 if (UseLoopCounter) { | |
| 1696 if (ProfileInterpreter) { | |
| 1697 // Out-of-line code to allocate method data oop. | |
| 1698 __ bind(profile_method); | |
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1699 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
| 0 | 1700 __ load_unsigned_byte(rbx, Address(rsi, 0)); // restore target bytecode |
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1701 __ set_method_data_pointer_for_bcp(); |
| 0 | 1702 __ jmp(dispatch); |
| 1703 } | |
| 1704 | |
| 1705 if (UseOnStackReplacement) { | |
| 1706 | |
| 1707 // invocation counter overflow | |
| 1708 __ bind(backedge_counter_overflow); | |
| 304 | 1709 __ negptr(rdx); |
| 1710 __ addptr(rdx, rsi); // branch bcp | |
| 0 | 1711 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rdx); |
| 1712 __ load_unsigned_byte(rbx, Address(rsi, 0)); // restore target bytecode | |
| 1713 | |
| 1714 // rax,: osr nmethod (osr ok) or NULL (osr not possible) | |
| 1715 // rbx,: target bytecode | |
| 1716 // rdx: scratch | |
| 1717 // rdi: locals pointer | |
| 1718 // rsi: bcp | |
| 304 | 1719 __ testptr(rax, rax); // test result |
| 0 | 1720 __ jcc(Assembler::zero, dispatch); // no osr if null |
| 1721 // nmethod may have been invalidated (VM may block upon call_VM return) | |
| 1722 __ movl(rcx, Address(rax, nmethod::entry_bci_offset())); | |
| 1723 __ cmpl(rcx, InvalidOSREntryBci); | |
| 1724 __ jcc(Assembler::equal, dispatch); | |
| 1725 | |
| 1726 // We have the address of an on stack replacement routine in rax, | |
| 1727 // We need to prepare to execute the OSR method. First we must | |
| 1728 // migrate the locals and monitors off of the stack. | |
| 1729 | |
| 304 | 1730 __ mov(rbx, rax); // save the nmethod |
| 0 | 1731 |
| 1732 const Register thread = rcx; | |
| 1733 __ get_thread(thread); | |
| 1734 call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin)); | |
| 1735 // rax, is OSR buffer, move it to expected parameter location | |
| 304 | 1736 __ mov(rcx, rax); |
| 0 | 1737 |
| 1738 // pop the interpreter frame | |
| 304 | 1739 __ movptr(rdx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
| 0 | 1740 __ leave(); // remove frame anchor |
| 304 | 1741 __ pop(rdi); // get return address |
| 1742 __ mov(rsp, rdx); // set sp to sender sp | |
| 0 | 1743 |
| 1744 // Align stack pointer for compiled code (note that caller is | |
| 1745 // responsible for undoing this fixup by remembering the old SP | |
| 1746 // in an rbp,-relative location) | |
| 304 | 1747 __ andptr(rsp, -(StackAlignmentInBytes)); |
| 0 | 1748 |
| 1749 // push the (possibly adjusted) return address | |
| 304 | 1750 __ push(rdi); |
| 0 | 1751 |
| 1752 // and begin the OSR nmethod | |
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1753 __ jmp(Address(rbx, nmethod::osr_entry_point_offset())); |
| 0 | 1754 } |
| 1755 } | |
| 1756 } | |
| 1757 | |
| 1758 | |
| 1759 void TemplateTable::if_0cmp(Condition cc) { | |
| 1760 transition(itos, vtos); | |
| 1761 // assume branch is more often taken than not (loops use backward branches) | |
| 1762 Label not_taken; | |
| 1763 __ testl(rax, rax); | |
| 1764 __ jcc(j_not(cc), not_taken); | |
| 1765 branch(false, false); | |
| 1766 __ bind(not_taken); | |
| 1767 __ profile_not_taken_branch(rax); | |
| 1768 } | |
| 1769 | |
| 1770 | |
| 1771 void TemplateTable::if_icmp(Condition cc) { | |
| 1772 transition(itos, vtos); | |
| 1773 // assume branch is more often taken than not (loops use backward branches) | |
| 1774 Label not_taken; | |
| 1775 __ pop_i(rdx); | |
| 1776 __ cmpl(rdx, rax); | |
| 1777 __ jcc(j_not(cc), not_taken); | |
| 1778 branch(false, false); | |
| 1779 __ bind(not_taken); | |
| 1780 __ profile_not_taken_branch(rax); | |
| 1781 } | |
| 1782 | |
| 1783 | |
| 1784 void TemplateTable::if_nullcmp(Condition cc) { | |
| 1785 transition(atos, vtos); | |
| 1786 // assume branch is more often taken than not (loops use backward branches) | |
| 1787 Label not_taken; | |
| 304 | 1788 __ testptr(rax, rax); |
| 0 | 1789 __ jcc(j_not(cc), not_taken); |
| 1790 branch(false, false); | |
| 1791 __ bind(not_taken); | |
| 1792 __ profile_not_taken_branch(rax); | |
| 1793 } | |
| 1794 | |
| 1795 | |
| 1796 void TemplateTable::if_acmp(Condition cc) { | |
| 1797 transition(atos, vtos); | |
| 1798 // assume branch is more often taken than not (loops use backward branches) | |
| 1799 Label not_taken; | |
| 1800 __ pop_ptr(rdx); | |
| 304 | 1801 __ cmpptr(rdx, rax); |
| 0 | 1802 __ jcc(j_not(cc), not_taken); |
| 1803 branch(false, false); | |
| 1804 __ bind(not_taken); | |
| 1805 __ profile_not_taken_branch(rax); | |
| 1806 } | |
| 1807 | |
| 1808 | |
| 1809 void TemplateTable::ret() { | |
| 1810 transition(vtos, vtos); | |
| 1811 locals_index(rbx); | |
| 304 | 1812 __ movptr(rbx, iaddress(rbx)); // get return bci, compute return bcp |
| 0 | 1813 __ profile_ret(rbx, rcx); |
| 1814 __ get_method(rax); | |
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1815 __ movptr(rsi, Address(rax, Method::const_offset())); |
| 304 | 1816 __ lea(rsi, Address(rsi, rbx, Address::times_1, |
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1817 ConstMethod::codes_offset())); |
| 0 | 1818 __ dispatch_next(vtos); |
| 1819 } | |
| 1820 | |
| 1821 | |
| 1822 void TemplateTable::wide_ret() { | |
| 1823 transition(vtos, vtos); | |
| 1824 locals_index_wide(rbx); | |
| 304 | 1825 __ movptr(rbx, iaddress(rbx)); // get return bci, compute return bcp |
| 0 | 1826 __ profile_ret(rbx, rcx); |
| 1827 __ get_method(rax); | |
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1828 __ movptr(rsi, Address(rax, Method::const_offset())); |
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1829 __ lea(rsi, Address(rsi, rbx, Address::times_1, ConstMethod::codes_offset())); |
| 0 | 1830 __ dispatch_next(vtos); |
| 1831 } | |
| 1832 | |
| 1833 | |
| 1834 void TemplateTable::tableswitch() { | |
| 1835 Label default_case, continue_execution; | |
| 1836 transition(itos, vtos); | |
| 1837 // align rsi | |
| 304 | 1838 __ lea(rbx, at_bcp(wordSize)); |
| 1839 __ andptr(rbx, -wordSize); | |
| 0 | 1840 // load lo & hi |
| 1841 __ movl(rcx, Address(rbx, 1 * wordSize)); | |
| 1842 __ movl(rdx, Address(rbx, 2 * wordSize)); | |
| 304 | 1843 __ bswapl(rcx); |
| 1844 __ bswapl(rdx); | |
| 0 | 1845 // check against lo & hi |
| 1846 __ cmpl(rax, rcx); | |
| 1847 __ jccb(Assembler::less, default_case); | |
| 1848 __ cmpl(rax, rdx); | |
| 1849 __ jccb(Assembler::greater, default_case); | |
| 1850 // lookup dispatch offset | |
| 1851 __ subl(rax, rcx); | |
| 304 | 1852 __ movl(rdx, Address(rbx, rax, Address::times_4, 3 * BytesPerInt)); |
| 0 | 1853 __ profile_switch_case(rax, rbx, rcx); |
| 1854 // continue execution | |
| 1855 __ bind(continue_execution); | |
| 304 | 1856 __ bswapl(rdx); |
| 0 | 1857 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1)); |
| 304 | 1858 __ addptr(rsi, rdx); |
| 0 | 1859 __ dispatch_only(vtos); |
| 1860 // handle default | |
| 1861 __ bind(default_case); | |
| 1862 __ profile_switch_default(rax); | |
| 1863 __ movl(rdx, Address(rbx, 0)); | |
| 1864 __ jmp(continue_execution); | |
| 1865 } | |
| 1866 | |
| 1867 | |
| 1868 void TemplateTable::lookupswitch() { | |
| 1869 transition(itos, itos); | |
| 1870 __ stop("lookupswitch bytecode should have been rewritten"); | |
| 1871 } | |
| 1872 | |
| 1873 | |
| 1874 void TemplateTable::fast_linearswitch() { | |
| 1875 transition(itos, vtos); | |
| 1876 Label loop_entry, loop, found, continue_execution; | |
| 304 | 1877 // bswapl rax, so we can avoid bswapping the table entries |
| 1878 __ bswapl(rax); | |
| 0 | 1879 // align rsi |
| 304 | 1880 __ lea(rbx, at_bcp(wordSize)); // btw: should be able to get rid of this instruction (change offsets below) |
| 1881 __ andptr(rbx, -wordSize); | |
| 0 | 1882 // set counter |
| 1883 __ movl(rcx, Address(rbx, wordSize)); | |
| 304 | 1884 __ bswapl(rcx); |
| 0 | 1885 __ jmpb(loop_entry); |
| 1886 // table search | |
| 1887 __ bind(loop); | |
| 1888 __ cmpl(rax, Address(rbx, rcx, Address::times_8, 2 * wordSize)); | |
| 1889 __ jccb(Assembler::equal, found); | |
| 1890 __ bind(loop_entry); | |
| 304 | 1891 __ decrementl(rcx); |
| 0 | 1892 __ jcc(Assembler::greaterEqual, loop); |
| 1893 // default case | |
| 1894 __ profile_switch_default(rax); | |
| 1895 __ movl(rdx, Address(rbx, 0)); | |
| 1896 __ jmpb(continue_execution); | |
| 1897 // entry found -> get offset | |
| 1898 __ bind(found); | |
| 1899 __ movl(rdx, Address(rbx, rcx, Address::times_8, 3 * wordSize)); | |
| 1900 __ profile_switch_case(rcx, rax, rbx); | |
| 1901 // continue execution | |
| 1902 __ bind(continue_execution); | |
| 304 | 1903 __ bswapl(rdx); |
| 0 | 1904 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1)); |
| 304 | 1905 __ addptr(rsi, rdx); |
| 0 | 1906 __ dispatch_only(vtos); |
| 1907 } | |
| 1908 | |
| 1909 | |
| 1910 void TemplateTable::fast_binaryswitch() { | |
| 1911 transition(itos, vtos); | |
| 1912 // Implementation using the following core algorithm: | |
| 1913 // | |
| 1914 // int binary_search(int key, LookupswitchPair* array, int n) { | |
| 1915 // // Binary search according to "Methodik des Programmierens" by | |
| 1916 // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985. | |
| 1917 // int i = 0; | |
| 1918 // int j = n; | |
| 1919 // while (i+1 < j) { | |
| 1920 // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q) | |
| 1921 // // with Q: for all i: 0 <= i < n: key < a[i] | |
| 1922 // // where a stands for the array and assuming that the (inexisting) | |
| 1923 // // element a[n] is infinitely big. | |
| 1924 // int h = (i + j) >> 1; | |
| 1925 // // i < h < j | |
| 1926 // if (key < array[h].fast_match()) { | |
| 1927 // j = h; | |
| 1928 // } else { | |
| 1929 // i = h; | |
| 1930 // } | |
| 1931 // } | |
| 1932 // // R: a[i] <= key < a[i+1] or Q | |
| 1933 // // (i.e., if key is within array, i is the correct index) | |
| 1934 // return i; | |
| 1935 // } | |
| 1936 | |
| 1937 // register allocation | |
| 1938 const Register key = rax; // already set (tosca) | |
| 1939 const Register array = rbx; | |
| 1940 const Register i = rcx; | |
| 1941 const Register j = rdx; | |
| 1942 const Register h = rdi; // needs to be restored | |
| 1943 const Register temp = rsi; | |
| 1944 // setup array | |
| 1945 __ save_bcp(); | |
| 1946 | |
| 304 | 1947 __ lea(array, at_bcp(3*wordSize)); // btw: should be able to get rid of this instruction (change offsets below) |
| 1948 __ andptr(array, -wordSize); | |
| 0 | 1949 // initialize i & j |
| 1950 __ xorl(i, i); // i = 0; | |
| 1951 __ movl(j, Address(array, -wordSize)); // j = length(array); | |
| 1952 // Convert j into native byteordering | |
| 304 | 1953 __ bswapl(j); |
| 0 | 1954 // and start |
| 1955 Label entry; | |
| 1956 __ jmp(entry); | |
| 1957 | |
| 1958 // binary search loop | |
| 1959 { Label loop; | |
| 1960 __ bind(loop); | |
| 1961 // int h = (i + j) >> 1; | |
| 1962 __ leal(h, Address(i, j, Address::times_1)); // h = i + j; | |
| 1963 __ sarl(h, 1); // h = (i + j) >> 1; | |
| 1964 // if (key < array[h].fast_match()) { | |
| 1965 // j = h; | |
| 1966 // } else { | |
| 1967 // i = h; | |
| 1968 // } | |
| 1969 // Convert array[h].match to native byte-ordering before compare | |
| 1970 __ movl(temp, Address(array, h, Address::times_8, 0*wordSize)); | |
| 304 | 1971 __ bswapl(temp); |
| 0 | 1972 __ cmpl(key, temp); |
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1973 // j = h if (key < array[h].fast_match()) |
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1974 __ cmov32(Assembler::less , j, h); |
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1975 // i = h if (key >= array[h].fast_match()) |
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1976 __ cmov32(Assembler::greaterEqual, i, h); |
| 0 | 1977 // while (i+1 < j) |
| 1978 __ bind(entry); | |
| 1979 __ leal(h, Address(i, 1)); // i+1 | |
| 1980 __ cmpl(h, j); // i+1 < j | |
| 1981 __ jcc(Assembler::less, loop); | |
| 1982 } | |
| 1983 | |
| 1984 // end of binary search, result index is i (must check again!) | |
| 1985 Label default_case; | |
| 1986 // Convert array[i].match to native byte-ordering before compare | |
| 1987 __ movl(temp, Address(array, i, Address::times_8, 0*wordSize)); | |
| 304 | 1988 __ bswapl(temp); |
| 0 | 1989 __ cmpl(key, temp); |
| 1990 __ jcc(Assembler::notEqual, default_case); | |
| 1991 | |
| 1992 // entry found -> j = offset | |
| 1993 __ movl(j , Address(array, i, Address::times_8, 1*wordSize)); | |
| 1994 __ profile_switch_case(i, key, array); | |
| 304 | 1995 __ bswapl(j); |
| 1996 LP64_ONLY(__ movslq(j, j)); | |
| 0 | 1997 __ restore_bcp(); |
| 1998 __ restore_locals(); // restore rdi | |
| 1999 __ load_unsigned_byte(rbx, Address(rsi, j, Address::times_1)); | |
| 2000 | |
| 304 | 2001 __ addptr(rsi, j); |
| 0 | 2002 __ dispatch_only(vtos); |
| 2003 | |
| 2004 // default case -> j = default offset | |
| 2005 __ bind(default_case); | |
| 2006 __ profile_switch_default(i); | |
| 2007 __ movl(j, Address(array, -2*wordSize)); | |
| 304 | 2008 __ bswapl(j); |
| 2009 LP64_ONLY(__ movslq(j, j)); | |
| 0 | 2010 __ restore_bcp(); |
| 2011 __ restore_locals(); // restore rdi | |
| 2012 __ load_unsigned_byte(rbx, Address(rsi, j, Address::times_1)); | |
| 304 | 2013 __ addptr(rsi, j); |
| 0 | 2014 __ dispatch_only(vtos); |
| 2015 } | |
| 2016 | |
| 2017 | |
| 2018 void TemplateTable::_return(TosState state) { | |
| 2019 transition(state, state); | |
| 2020 assert(_desc->calls_vm(), "inconsistent calls_vm information"); // call in remove_activation | |
| 2021 | |
| 2022 if (_desc->bytecode() == Bytecodes::_return_register_finalizer) { | |
| 2023 assert(state == vtos, "only valid state"); | |
| 304 | 2024 __ movptr(rax, aaddress(0)); |
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2025 __ load_klass(rdi, rax); |
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2026 __ movl(rdi, Address(rdi, Klass::access_flags_offset())); |
| 0 | 2027 __ testl(rdi, JVM_ACC_HAS_FINALIZER); |
| 2028 Label skip_register_finalizer; | |
| 2029 __ jcc(Assembler::zero, skip_register_finalizer); | |
| 2030 | |
| 2031 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), rax); | |
| 2032 | |
| 2033 __ bind(skip_register_finalizer); | |
| 2034 } | |
| 2035 | |
| 2036 __ remove_activation(state, rsi); | |
| 2037 __ jmp(rsi); | |
| 2038 } | |
| 2039 | |
| 2040 | |
| 2041 // ---------------------------------------------------------------------------- | |
| 2042 // Volatile variables demand their effects be made known to all CPU's in | |
| 2043 // order. Store buffers on most chips allow reads & writes to reorder; the | |
| 2044 // JMM's ReadAfterWrite.java test fails in -Xint mode without some kind of | |
| 2045 // memory barrier (i.e., it's not sufficient that the interpreter does not | |
| 2046 // reorder volatile references, the hardware also must not reorder them). | |
| 2047 // | |
| 2048 // According to the new Java Memory Model (JMM): | |
| 2049 // (1) All volatiles are serialized wrt to each other. | |
| 2050 // ALSO reads & writes act as aquire & release, so: | |
| 2051 // (2) A read cannot let unrelated NON-volatile memory refs that happen after | |
| 2052 // the read float up to before the read. It's OK for non-volatile memory refs | |
| 2053 // that happen before the volatile read to float down below it. | |
| 2054 // (3) Similar a volatile write cannot let unrelated NON-volatile memory refs | |
| 2055 // that happen BEFORE the write float down to after the write. It's OK for | |
| 2056 // non-volatile memory refs that happen after the volatile write to float up | |
| 2057 // before it. | |
| 2058 // | |
| 2059 // We only put in barriers around volatile refs (they are expensive), not | |
| 2060 // _between_ memory refs (that would require us to track the flavor of the | |
| 2061 // previous memory refs). Requirements (2) and (3) require some barriers | |
| 2062 // before volatile stores and after volatile loads. These nearly cover | |
| 2063 // requirement (1) but miss the volatile-store-volatile-load case. This final | |
| 2064 // case is placed after volatile-stores although it could just as well go | |
| 2065 // before volatile-loads. | |
| 304 | 2066 void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits order_constraint ) { |
| 0 | 2067 // Helper function to insert a is-volatile test and memory barrier |
| 2068 if( !os::is_MP() ) return; // Not needed on single CPU | |
| 304 | 2069 __ membar(order_constraint); |
| 0 | 2070 } |
| 2071 | |
| 1565 | 2072 void TemplateTable::resolve_cache_and_index(int byte_no, |
| 2073 Register Rcache, | |
| 2074 Register index, | |
| 2075 size_t index_size) { | |
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2076 const Register temp = rbx; |
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2077 assert_different_registers(Rcache, index, temp); |
| 1565 | 2078 |
| 0 | 2079 Label resolved; |
| 1565 | 2080 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range"); |
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2081 __ get_cache_and_index_and_bytecode_at_bcp(Rcache, index, temp, byte_no, 1, index_size); |
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2082 __ cmpl(temp, (int) bytecode()); // have we resolved this bytecode? |
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2083 __ jcc(Assembler::equal, resolved); |
| 0 | 2084 |
| 2085 // resolve first time through | |
| 2086 address entry; | |
| 2087 switch (bytecode()) { | |
| 2088 case Bytecodes::_getstatic : // fall through | |
| 2089 case Bytecodes::_putstatic : // fall through | |
| 2090 case Bytecodes::_getfield : // fall through | |
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2091 case Bytecodes::_putfield : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put); break; |
| 0 | 2092 case Bytecodes::_invokevirtual : // fall through |
| 2093 case Bytecodes::_invokespecial : // fall through | |
| 2094 case Bytecodes::_invokestatic : // fall through | |
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2095 case Bytecodes::_invokeinterface: entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); break; |
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2096 case Bytecodes::_invokehandle : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokehandle); break; |
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2097 case Bytecodes::_invokedynamic : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic); break; |
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2098 default: |
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2099 fatal(err_msg("unexpected bytecode: %s", Bytecodes::name(bytecode()))); |
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2100 break; |
| 0 | 2101 } |
| 2102 __ movl(temp, (int)bytecode()); | |
| 2103 __ call_VM(noreg, entry, temp); | |
| 2104 // Update registers with resolved info | |
| 1565 | 2105 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size); |
| 0 | 2106 __ bind(resolved); |
| 2107 } | |
| 2108 | |
| 2109 | |
| 2110 // The cache and index registers must be set before call | |
| 2111 void TemplateTable::load_field_cp_cache_entry(Register obj, | |
| 2112 Register cache, | |
| 2113 Register index, | |
| 2114 Register off, | |
| 2115 Register flags, | |
| 2116 bool is_static = false) { | |
| 2117 assert_different_registers(cache, index, flags, off); | |
| 2118 | |
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2119 ByteSize cp_base_offset = ConstantPoolCache::base_offset(); |
| 0 | 2120 // Field offset |
| 304 | 2121 __ movptr(off, Address(cache, index, Address::times_ptr, |
| 2122 in_bytes(cp_base_offset + ConstantPoolCacheEntry::f2_offset()))); | |
| 0 | 2123 // Flags |
| 304 | 2124 __ movl(flags, Address(cache, index, Address::times_ptr, |
| 0 | 2125 in_bytes(cp_base_offset + ConstantPoolCacheEntry::flags_offset()))); |
| 2126 | |
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2127 // klass overwrite register |
| 0 | 2128 if (is_static) { |
| 304 | 2129 __ movptr(obj, Address(cache, index, Address::times_ptr, |
| 2130 in_bytes(cp_base_offset + ConstantPoolCacheEntry::f1_offset()))); | |
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2131 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
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2132 __ movptr(obj, Address(obj, mirror_offset)); |
| 0 | 2133 } |
| 2134 } | |
| 2135 | |
| 2136 void TemplateTable::load_invoke_cp_cache_entry(int byte_no, | |
| 2137 Register method, | |
| 2138 Register itable_index, | |
| 2139 Register flags, | |
| 2140 bool is_invokevirtual, | |
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2141 bool is_invokevfinal, /*unused*/ |
| 1565 | 2142 bool is_invokedynamic) { |
| 0 | 2143 // setup registers |
| 2144 const Register cache = rcx; | |
| 2145 const Register index = rdx; | |
| 2146 assert_different_registers(method, flags); | |
| 2147 assert_different_registers(method, cache, index); | |
| 2148 assert_different_registers(itable_index, flags); | |
| 2149 assert_different_registers(itable_index, cache, index); | |
| 2150 // determine constant pool cache field offsets | |
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2151 assert(is_invokevirtual == (byte_no == f2_byte), "is_invokevirtual flag redundant"); |
| 0 | 2152 const int method_offset = in_bytes( |
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2153 ConstantPoolCache::base_offset() + |
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2154 ((byte_no == f2_byte) |
| 0 | 2155 ? ConstantPoolCacheEntry::f2_offset() |
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2156 : ConstantPoolCacheEntry::f1_offset())); |
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2157 const int flags_offset = in_bytes(ConstantPoolCache::base_offset() + |
| 0 | 2158 ConstantPoolCacheEntry::flags_offset()); |
| 2159 // access constant pool cache fields | |
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2160 const int index_offset = in_bytes(ConstantPoolCache::base_offset() + |
| 0 | 2161 ConstantPoolCacheEntry::f2_offset()); |
| 2162 | |
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2163 size_t index_size = (is_invokedynamic ? sizeof(u4) : sizeof(u2)); |
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2164 resolve_cache_and_index(byte_no, cache, index, index_size); |
| 1565 | 2165 __ movptr(method, Address(cache, index, Address::times_ptr, method_offset)); |
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2166 |
| 0 | 2167 if (itable_index != noreg) { |
| 304 | 2168 __ movptr(itable_index, Address(cache, index, Address::times_ptr, index_offset)); |
| 0 | 2169 } |
| 1565 | 2170 __ movl(flags, Address(cache, index, Address::times_ptr, flags_offset)); |
| 0 | 2171 } |
| 2172 | |
| 2173 | |
| 2174 // The registers cache and index expected to be set before call. | |
| 2175 // Correct values of the cache and index registers are preserved. | |
| 2176 void TemplateTable::jvmti_post_field_access(Register cache, | |
| 2177 Register index, | |
| 2178 bool is_static, | |
| 2179 bool has_tos) { | |
| 2180 if (JvmtiExport::can_post_field_access()) { | |
| 2181 // Check to see if a field access watch has been set before we take | |
| 2182 // the time to call into the VM. | |
| 2183 Label L1; | |
| 2184 assert_different_registers(cache, index, rax); | |
| 2185 __ mov32(rax, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
| 2186 __ testl(rax,rax); | |
| 2187 __ jcc(Assembler::zero, L1); | |
| 2188 | |
| 2189 // cache entry pointer | |
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2190 __ addptr(cache, in_bytes(ConstantPoolCache::base_offset())); |
| 0 | 2191 __ shll(index, LogBytesPerWord); |
| 304 | 2192 __ addptr(cache, index); |
| 0 | 2193 if (is_static) { |
| 304 | 2194 __ xorptr(rax, rax); // NULL object reference |
| 0 | 2195 } else { |
| 2196 __ pop(atos); // Get the object | |
| 2197 __ verify_oop(rax); | |
| 2198 __ push(atos); // Restore stack state | |
| 2199 } | |
| 2200 // rax,: object pointer or NULL | |
| 2201 // cache: cache entry pointer | |
| 2202 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), | |
| 2203 rax, cache); | |
| 2204 __ get_cache_and_index_at_bcp(cache, index, 1); | |
| 2205 __ bind(L1); | |
| 2206 } | |
| 2207 } | |
| 2208 | |
| 2209 void TemplateTable::pop_and_check_object(Register r) { | |
| 2210 __ pop_ptr(r); | |
| 2211 __ null_check(r); // for field access must check obj. | |
| 2212 __ verify_oop(r); | |
| 2213 } | |
| 2214 | |
| 2215 void TemplateTable::getfield_or_static(int byte_no, bool is_static) { | |
| 2216 transition(vtos, vtos); | |
| 2217 | |
| 2218 const Register cache = rcx; | |
| 2219 const Register index = rdx; | |
| 2220 const Register obj = rcx; | |
| 2221 const Register off = rbx; | |
| 2222 const Register flags = rax; | |
| 2223 | |
|
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2224 resolve_cache_and_index(byte_no, cache, index, sizeof(u2)); |
| 0 | 2225 jvmti_post_field_access(cache, index, is_static, false); |
| 2226 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
| 2227 | |
| 2228 if (!is_static) pop_and_check_object(obj); | |
| 2229 | |
| 2230 const Address lo(obj, off, Address::times_1, 0*wordSize); | |
| 2231 const Address hi(obj, off, Address::times_1, 1*wordSize); | |
| 2232 | |
| 2233 Label Done, notByte, notInt, notShort, notChar, notLong, notFloat, notObj, notDouble; | |
| 2234 | |
|
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2235 __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift); |
| 0 | 2236 assert(btos == 0, "change code, btos != 0"); |
| 2237 // btos | |
|
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2238 __ andptr(flags, ConstantPoolCacheEntry::tos_state_mask); |
| 0 | 2239 __ jcc(Assembler::notZero, notByte); |
| 2240 | |
| 2241 __ load_signed_byte(rax, lo ); | |
| 2242 __ push(btos); | |
| 2243 // Rewrite bytecode to be faster | |
| 2244 if (!is_static) { | |
| 2245 patch_bytecode(Bytecodes::_fast_bgetfield, rcx, rbx); | |
| 2246 } | |
| 2247 __ jmp(Done); | |
| 2248 | |
| 2249 __ bind(notByte); | |
| 2250 // itos | |
| 2251 __ cmpl(flags, itos ); | |
| 2252 __ jcc(Assembler::notEqual, notInt); | |
| 2253 | |
| 2254 __ movl(rax, lo ); | |
| 2255 __ push(itos); | |
| 2256 // Rewrite bytecode to be faster | |
| 2257 if (!is_static) { | |
| 2258 patch_bytecode(Bytecodes::_fast_igetfield, rcx, rbx); | |
| 2259 } | |
| 2260 __ jmp(Done); | |
| 2261 | |
| 2262 __ bind(notInt); | |
| 2263 // atos | |
| 2264 __ cmpl(flags, atos ); | |
| 2265 __ jcc(Assembler::notEqual, notObj); | |
| 2266 | |
| 2267 __ movl(rax, lo ); | |
| 2268 __ push(atos); | |
| 2269 if (!is_static) { | |
| 2270 patch_bytecode(Bytecodes::_fast_agetfield, rcx, rbx); | |
| 2271 } | |
| 2272 __ jmp(Done); | |
| 2273 | |
| 2274 __ bind(notObj); | |
| 2275 // ctos | |
| 2276 __ cmpl(flags, ctos ); | |
| 2277 __ jcc(Assembler::notEqual, notChar); | |
| 2278 | |
|
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2279 __ load_unsigned_short(rax, lo ); |
| 0 | 2280 __ push(ctos); |
| 2281 if (!is_static) { | |
| 2282 patch_bytecode(Bytecodes::_fast_cgetfield, rcx, rbx); | |
| 2283 } | |
| 2284 __ jmp(Done); | |
| 2285 | |
| 2286 __ bind(notChar); | |
| 2287 // stos | |
| 2288 __ cmpl(flags, stos ); | |
| 2289 __ jcc(Assembler::notEqual, notShort); | |
| 2290 | |
|
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2291 __ load_signed_short(rax, lo ); |
| 0 | 2292 __ push(stos); |
| 2293 if (!is_static) { | |
| 2294 patch_bytecode(Bytecodes::_fast_sgetfield, rcx, rbx); | |
| 2295 } | |
| 2296 __ jmp(Done); | |
| 2297 | |
| 2298 __ bind(notShort); | |
| 2299 // ltos | |
| 2300 __ cmpl(flags, ltos ); | |
| 2301 __ jcc(Assembler::notEqual, notLong); | |
| 2302 | |
| 2303 // Generate code as if volatile. There just aren't enough registers to | |
| 2304 // save that information and this code is faster than the test. | |
| 2305 __ fild_d(lo); // Must load atomically | |
| 304 | 2306 __ subptr(rsp,2*wordSize); // Make space for store |
| 0 | 2307 __ fistp_d(Address(rsp,0)); |
| 304 | 2308 __ pop(rax); |
| 2309 __ pop(rdx); | |
| 0 | 2310 |
| 2311 __ push(ltos); | |
| 2312 // Don't rewrite to _fast_lgetfield for potential volatile case. | |
| 2313 __ jmp(Done); | |
| 2314 | |
| 2315 __ bind(notLong); | |
| 2316 // ftos | |
| 2317 __ cmpl(flags, ftos ); | |
| 2318 __ jcc(Assembler::notEqual, notFloat); | |
| 2319 | |
| 2320 __ fld_s(lo); | |
| 2321 __ push(ftos); | |
| 2322 if (!is_static) { | |
| 2323 patch_bytecode(Bytecodes::_fast_fgetfield, rcx, rbx); | |
| 2324 } | |
| 2325 __ jmp(Done); | |
| 2326 | |
| 2327 __ bind(notFloat); | |
| 2328 // dtos | |
| 2329 __ cmpl(flags, dtos ); | |
| 2330 __ jcc(Assembler::notEqual, notDouble); | |
| 2331 | |
| 2332 __ fld_d(lo); | |
| 2333 __ push(dtos); | |
| 2334 if (!is_static) { | |
| 2335 patch_bytecode(Bytecodes::_fast_dgetfield, rcx, rbx); | |
| 2336 } | |
| 2337 __ jmpb(Done); | |
| 2338 | |
| 2339 __ bind(notDouble); | |
| 2340 | |
| 2341 __ stop("Bad state"); | |
| 2342 | |
| 2343 __ bind(Done); | |
| 2344 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). | |
| 2345 // volatile_barrier( ); | |
| 2346 } | |
| 2347 | |
| 2348 | |
| 2349 void TemplateTable::getfield(int byte_no) { | |
| 2350 getfield_or_static(byte_no, false); | |
| 2351 } | |
| 2352 | |
| 2353 | |
| 2354 void TemplateTable::getstatic(int byte_no) { | |
| 2355 getfield_or_static(byte_no, true); | |
| 2356 } | |
| 2357 | |
| 2358 // The registers cache and index expected to be set before call. | |
| 2359 // The function may destroy various registers, just not the cache and index registers. | |
| 2360 void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) { | |
| 2361 | |
|
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2362 ByteSize cp_base_offset = ConstantPoolCache::base_offset(); |
| 0 | 2363 |
| 2364 if (JvmtiExport::can_post_field_modification()) { | |
| 2365 // Check to see if a field modification watch has been set before we take | |
| 2366 // the time to call into the VM. | |
| 2367 Label L1; | |
| 2368 assert_different_registers(cache, index, rax); | |
| 2369 __ mov32(rax, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
| 2370 __ testl(rax, rax); | |
| 2371 __ jcc(Assembler::zero, L1); | |
| 2372 | |
| 2373 // The cache and index registers have been already set. | |
| 2374 // This allows to eliminate this call but the cache and index | |
| 2375 // registers have to be correspondingly used after this line. | |
| 2376 __ get_cache_and_index_at_bcp(rax, rdx, 1); | |
| 2377 | |
| 2378 if (is_static) { | |
| 2379 // Life is simple. Null out the object pointer. | |
| 304 | 2380 __ xorptr(rbx, rbx); |
| 0 | 2381 } else { |
| 2382 // Life is harder. The stack holds the value on top, followed by the object. | |
| 2383 // We don't know the size of the value, though; it could be one or two words | |
| 2384 // depending on its type. As a result, we must find the type to determine where | |
| 2385 // the object is. | |
| 2386 Label two_word, valsize_known; | |
| 304 | 2387 __ movl(rcx, Address(rax, rdx, Address::times_ptr, in_bytes(cp_base_offset + |
| 0 | 2388 ConstantPoolCacheEntry::flags_offset()))); |
| 304 | 2389 __ mov(rbx, rsp); |
|
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2390 __ shrl(rcx, ConstantPoolCacheEntry::tos_state_shift); |
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2391 // Make sure we don't need to mask rcx after the above shift |
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2392 ConstantPoolCacheEntry::verify_tos_state_shift(); |
| 0 | 2393 __ cmpl(rcx, ltos); |
| 2394 __ jccb(Assembler::equal, two_word); | |
| 2395 __ cmpl(rcx, dtos); | |
| 2396 __ jccb(Assembler::equal, two_word); | |
| 304 | 2397 __ addptr(rbx, Interpreter::expr_offset_in_bytes(1)); // one word jvalue (not ltos, dtos) |
| 0 | 2398 __ jmpb(valsize_known); |
| 2399 | |
| 2400 __ bind(two_word); | |
| 304 | 2401 __ addptr(rbx, Interpreter::expr_offset_in_bytes(2)); // two words jvalue |
| 0 | 2402 |
| 2403 __ bind(valsize_known); | |
| 2404 // setup object pointer | |
| 304 | 2405 __ movptr(rbx, Address(rbx, 0)); |
| 0 | 2406 } |
| 2407 // cache entry pointer | |
| 304 | 2408 __ addptr(rax, in_bytes(cp_base_offset)); |
| 0 | 2409 __ shll(rdx, LogBytesPerWord); |
| 304 | 2410 __ addptr(rax, rdx); |
| 0 | 2411 // object (tos) |
| 304 | 2412 __ mov(rcx, rsp); |
| 0 | 2413 // rbx,: object pointer set up above (NULL if static) |
| 2414 // rax,: cache entry pointer | |
| 2415 // rcx: jvalue object on the stack | |
| 2416 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), | |
| 2417 rbx, rax, rcx); | |
| 2418 __ get_cache_and_index_at_bcp(cache, index, 1); | |
| 2419 __ bind(L1); | |
| 2420 } | |
| 2421 } | |
| 2422 | |
| 2423 | |
| 2424 void TemplateTable::putfield_or_static(int byte_no, bool is_static) { | |
| 2425 transition(vtos, vtos); | |
| 2426 | |
| 2427 const Register cache = rcx; | |
| 2428 const Register index = rdx; | |
| 2429 const Register obj = rcx; | |
| 2430 const Register off = rbx; | |
| 2431 const Register flags = rax; | |
| 2432 | |
|
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2433 resolve_cache_and_index(byte_no, cache, index, sizeof(u2)); |
| 0 | 2434 jvmti_post_field_mod(cache, index, is_static); |
| 2435 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
| 2436 | |
| 2437 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). | |
| 2438 // volatile_barrier( ); | |
| 2439 | |
| 2440 Label notVolatile, Done; | |
| 2441 __ movl(rdx, flags); | |
|
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2442 __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift); |
| 0 | 2443 __ andl(rdx, 0x1); |
| 2444 | |
| 2445 // field addresses | |
| 2446 const Address lo(obj, off, Address::times_1, 0*wordSize); | |
| 2447 const Address hi(obj, off, Address::times_1, 1*wordSize); | |
| 2448 | |
| 2449 Label notByte, notInt, notShort, notChar, notLong, notFloat, notObj, notDouble; | |
| 2450 | |
|
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2451 __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift); |
| 0 | 2452 assert(btos == 0, "change code, btos != 0"); |
|
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2453 __ andl(flags, ConstantPoolCacheEntry::tos_state_mask); |
| 0 | 2454 __ jcc(Assembler::notZero, notByte); |
| 2455 | |
|
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2456 // btos |
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2457 { |
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2458 __ pop(btos); |
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2459 if (!is_static) pop_and_check_object(obj); |
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2460 __ movb(lo, rax); |
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2461 if (!is_static) { |
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2462 patch_bytecode(Bytecodes::_fast_bputfield, rcx, rbx, true, byte_no); |
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2463 } |
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2464 __ jmp(Done); |
| 0 | 2465 } |
| 2466 | |
| 2467 __ bind(notByte); | |
|
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2468 __ cmpl(flags, itos); |
| 0 | 2469 __ jcc(Assembler::notEqual, notInt); |
| 2470 | |
|
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2471 // itos |
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2472 { |
|
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2473 __ pop(itos); |
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2474 if (!is_static) pop_and_check_object(obj); |
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2475 __ movl(lo, rax); |
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2476 if (!is_static) { |
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2477 patch_bytecode(Bytecodes::_fast_iputfield, rcx, rbx, true, byte_no); |
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2478 } |
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2479 __ jmp(Done); |
| 0 | 2480 } |
| 2481 | |
| 2482 __ bind(notInt); | |
|
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2483 __ cmpl(flags, atos); |
| 0 | 2484 __ jcc(Assembler::notEqual, notObj); |
| 2485 | |
|
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2486 // atos |
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2487 { |
|
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2488 __ pop(atos); |
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2489 if (!is_static) pop_and_check_object(obj); |
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2490 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
|
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2491 if (!is_static) { |
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2492 patch_bytecode(Bytecodes::_fast_aputfield, rcx, rbx, true, byte_no); |
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2493 } |
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2494 __ jmp(Done); |
| 0 | 2495 } |
|
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2496 |
| 0 | 2497 __ bind(notObj); |
|
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2498 __ cmpl(flags, ctos); |
| 0 | 2499 __ jcc(Assembler::notEqual, notChar); |
| 2500 | |
|
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2501 // ctos |
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2502 { |
|
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2503 __ pop(ctos); |
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2504 if (!is_static) pop_and_check_object(obj); |
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2505 __ movw(lo, rax); |
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2506 if (!is_static) { |
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2507 patch_bytecode(Bytecodes::_fast_cputfield, rcx, rbx, true, byte_no); |
|
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2508 } |
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2509 __ jmp(Done); |
| 0 | 2510 } |
| 2511 | |
| 2512 __ bind(notChar); | |
|
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2513 __ cmpl(flags, stos); |
| 0 | 2514 __ jcc(Assembler::notEqual, notShort); |
| 2515 | |
|
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2516 // stos |
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2517 { |
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2518 __ pop(stos); |
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2519 if (!is_static) pop_and_check_object(obj); |
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2520 __ movw(lo, rax); |
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2521 if (!is_static) { |
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2522 patch_bytecode(Bytecodes::_fast_sputfield, rcx, rbx, true, byte_no); |
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2523 } |
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2524 __ jmp(Done); |
| 0 | 2525 } |
| 2526 | |
| 2527 __ bind(notShort); | |
|
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2528 __ cmpl(flags, ltos); |
| 0 | 2529 __ jcc(Assembler::notEqual, notLong); |
| 2530 | |
|
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2531 // ltos |
|
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2532 { |
|
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2533 Label notVolatileLong; |
|
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2534 __ testl(rdx, rdx); |
|
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2535 __ jcc(Assembler::zero, notVolatileLong); |
|
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2536 |
|
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2537 __ pop(ltos); // overwrites rdx, do this after testing volatile. |
|
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2538 if (!is_static) pop_and_check_object(obj); |
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2539 |
|
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2540 // Replace with real volatile test |
|
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2541 __ push(rdx); |
|
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2542 __ push(rax); // Must update atomically with FIST |
|
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2543 __ fild_d(Address(rsp,0)); // So load into FPU register |
|
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2544 __ fistp_d(lo); // and put into memory atomically |
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2545 __ addptr(rsp, 2*wordSize); |
|
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2546 // volatile_barrier(); |
|
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2547 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | |
|
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2548 Assembler::StoreStore)); |
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2549 // Don't rewrite volatile version |
|
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2550 __ jmp(notVolatile); |
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2551 |
|
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2552 __ bind(notVolatileLong); |
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2553 |
|
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2554 __ pop(ltos); // overwrites rdx |
|
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2555 if (!is_static) pop_and_check_object(obj); |
|
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2556 NOT_LP64(__ movptr(hi, rdx)); |
|
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2557 __ movptr(lo, rax); |
|
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2558 if (!is_static) { |
|
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2559 patch_bytecode(Bytecodes::_fast_lputfield, rcx, rbx, true, byte_no); |
|
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2560 } |
|
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2561 __ jmp(notVolatile); |
| 0 | 2562 } |
| 2563 | |
| 2564 __ bind(notLong); | |
|
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2565 __ cmpl(flags, ftos); |
| 0 | 2566 __ jcc(Assembler::notEqual, notFloat); |
| 2567 | |
|
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2568 // ftos |
|
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2569 { |
|
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|
2570 __ pop(ftos); |
|
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2571 if (!is_static) pop_and_check_object(obj); |
|
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2572 __ fstp_s(lo); |
|
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2573 if (!is_static) { |
|
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2574 patch_bytecode(Bytecodes::_fast_fputfield, rcx, rbx, true, byte_no); |
|
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2575 } |
|
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2576 __ jmp(Done); |
| 0 | 2577 } |
| 2578 | |
| 2579 __ bind(notFloat); | |
|
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2580 #ifdef ASSERT |
|
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2581 __ cmpl(flags, dtos); |
| 0 | 2582 __ jcc(Assembler::notEqual, notDouble); |
|
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2583 #endif |
|
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2584 |
|
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2585 // dtos |
|
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|
2586 { |
|
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|
2587 __ pop(dtos); |
|
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2588 if (!is_static) pop_and_check_object(obj); |
|
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2589 __ fstp_d(lo); |
|
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|
2590 if (!is_static) { |
|
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2591 patch_bytecode(Bytecodes::_fast_dputfield, rcx, rbx, true, byte_no); |
|
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|
2592 } |
|
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2593 __ jmp(Done); |
| 0 | 2594 } |
|
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2595 |
|
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2596 #ifdef ASSERT |
| 0 | 2597 __ bind(notDouble); |
| 2598 __ stop("Bad state"); | |
|
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2599 #endif |
| 0 | 2600 |
| 2601 __ bind(Done); | |
| 2602 | |
| 2603 // Check for volatile store | |
| 2604 __ testl(rdx, rdx); | |
| 2605 __ jcc(Assembler::zero, notVolatile); | |
| 304 | 2606 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | |
| 2607 Assembler::StoreStore)); | |
| 0 | 2608 __ bind(notVolatile); |
| 2609 } | |
| 2610 | |
| 2611 | |
| 2612 void TemplateTable::putfield(int byte_no) { | |
| 2613 putfield_or_static(byte_no, false); | |
| 2614 } | |
| 2615 | |
| 2616 | |
| 2617 void TemplateTable::putstatic(int byte_no) { | |
| 2618 putfield_or_static(byte_no, true); | |
| 2619 } | |
| 2620 | |
| 2621 void TemplateTable::jvmti_post_fast_field_mod() { | |
| 2622 if (JvmtiExport::can_post_field_modification()) { | |
| 2623 // Check to see if a field modification watch has been set before we take | |
| 2624 // the time to call into the VM. | |
| 2625 Label L2; | |
|
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2626 __ mov32(rcx, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); |
|
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2627 __ testl(rcx,rcx); |
|
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2628 __ jcc(Assembler::zero, L2); |
|
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2629 __ pop_ptr(rbx); // copy the object pointer from tos |
|
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2630 __ verify_oop(rbx); |
|
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2631 __ push_ptr(rbx); // put the object pointer back on tos |
|
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2632 |
|
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|
2633 // Save tos values before call_VM() clobbers them. Since we have |
|
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2634 // to do it for every data type, we use the saved values as the |
|
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2635 // jvalue object. |
|
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|
2636 switch (bytecode()) { // load values into the jvalue object |
|
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2637 case Bytecodes::_fast_aputfield: __ push_ptr(rax); break; |
|
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2638 case Bytecodes::_fast_bputfield: // fall through |
|
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2639 case Bytecodes::_fast_sputfield: // fall through |
|
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2640 case Bytecodes::_fast_cputfield: // fall through |
|
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2641 case Bytecodes::_fast_iputfield: __ push_i(rax); break; |
|
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2642 case Bytecodes::_fast_dputfield: __ push_d(); break; |
|
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2643 case Bytecodes::_fast_fputfield: __ push_f(); break; |
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2644 case Bytecodes::_fast_lputfield: __ push_l(rax); break; |
|
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2645 |
|
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2646 default: |
|
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|
2647 ShouldNotReachHere(); |
|
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2648 } |
|
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2649 __ mov(rcx, rsp); // points to jvalue on the stack |
|
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2650 // access constant pool cache entry |
|
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2651 __ get_cache_entry_pointer_at_bcp(rax, rdx, 1); |
|
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2652 __ verify_oop(rbx); |
|
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2653 // rbx,: object pointer copied above |
|
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2654 // rax,: cache entry pointer |
|
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2655 // rcx: jvalue object on the stack |
|
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|
2656 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), rbx, rax, rcx); |
|
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2657 |
|
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|
2658 switch (bytecode()) { // restore tos values |
|
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|
2659 case Bytecodes::_fast_aputfield: __ pop_ptr(rax); break; |
|
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|
2660 case Bytecodes::_fast_bputfield: // fall through |
|
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|
2661 case Bytecodes::_fast_sputfield: // fall through |
|
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|
2662 case Bytecodes::_fast_cputfield: // fall through |
|
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2663 case Bytecodes::_fast_iputfield: __ pop_i(rax); break; |
|
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2664 case Bytecodes::_fast_dputfield: __ pop_d(); break; |
|
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|
2665 case Bytecodes::_fast_fputfield: __ pop_f(); break; |
|
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|
2666 case Bytecodes::_fast_lputfield: __ pop_l(rax); break; |
|
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|
2667 } |
|
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|
2668 __ bind(L2); |
| 0 | 2669 } |
| 2670 } | |
| 2671 | |
| 2672 void TemplateTable::fast_storefield(TosState state) { | |
| 2673 transition(state, vtos); | |
| 2674 | |
|
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2675 ByteSize base = ConstantPoolCache::base_offset(); |
| 0 | 2676 |
| 2677 jvmti_post_fast_field_mod(); | |
| 2678 | |
| 2679 // access constant pool cache | |
| 2680 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
| 2681 | |
| 2682 // test for volatile with rdx but rdx is tos register for lputfield. | |
| 304 | 2683 if (bytecode() == Bytecodes::_fast_lputfield) __ push(rdx); |
| 2684 __ movl(rdx, Address(rcx, rbx, Address::times_ptr, in_bytes(base + | |
| 0 | 2685 ConstantPoolCacheEntry::flags_offset()))); |
| 2686 | |
| 2687 // replace index with field offset from cache entry | |
| 304 | 2688 __ movptr(rbx, Address(rcx, rbx, Address::times_ptr, in_bytes(base + ConstantPoolCacheEntry::f2_offset()))); |
| 0 | 2689 |
| 2690 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). | |
| 2691 // volatile_barrier( ); | |
| 2692 | |
| 2693 Label notVolatile, Done; | |
|
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2694 __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift); |
| 0 | 2695 __ andl(rdx, 0x1); |
| 2696 // Check for volatile store | |
| 2697 __ testl(rdx, rdx); | |
| 2698 __ jcc(Assembler::zero, notVolatile); | |
| 2699 | |
| 304 | 2700 if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx); |
| 0 | 2701 |
| 2702 // Get object from stack | |
| 2703 pop_and_check_object(rcx); | |
| 2704 | |
| 2705 // field addresses | |
| 2706 const Address lo(rcx, rbx, Address::times_1, 0*wordSize); | |
| 2707 const Address hi(rcx, rbx, Address::times_1, 1*wordSize); | |
| 2708 | |
| 2709 // access field | |
| 2710 switch (bytecode()) { | |
| 2711 case Bytecodes::_fast_bputfield: __ movb(lo, rax); break; | |
| 2712 case Bytecodes::_fast_sputfield: // fall through | |
| 2713 case Bytecodes::_fast_cputfield: __ movw(lo, rax); break; | |
| 2714 case Bytecodes::_fast_iputfield: __ movl(lo, rax); break; | |
| 304 | 2715 case Bytecodes::_fast_lputfield: |
| 2716 NOT_LP64(__ movptr(hi, rdx)); | |
| 2717 __ movptr(lo, rax); | |
| 2718 break; | |
| 0 | 2719 case Bytecodes::_fast_fputfield: __ fstp_s(lo); break; |
| 2720 case Bytecodes::_fast_dputfield: __ fstp_d(lo); break; | |
|
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2721 case Bytecodes::_fast_aputfield: { |
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2722 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
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2723 break; |
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2724 } |
| 0 | 2725 default: |
| 2726 ShouldNotReachHere(); | |
| 2727 } | |
| 2728 | |
| 2729 Label done; | |
| 304 | 2730 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | |
| 2731 Assembler::StoreStore)); | |
|
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2732 // Barriers are so large that short branch doesn't reach! |
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2733 __ jmp(done); |
| 0 | 2734 |
| 2735 // Same code as above, but don't need rdx to test for volatile. | |
| 2736 __ bind(notVolatile); | |
| 2737 | |
| 304 | 2738 if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx); |
| 0 | 2739 |
| 2740 // Get object from stack | |
| 2741 pop_and_check_object(rcx); | |
| 2742 | |
| 2743 // access field | |
| 2744 switch (bytecode()) { | |
| 2745 case Bytecodes::_fast_bputfield: __ movb(lo, rax); break; | |
| 2746 case Bytecodes::_fast_sputfield: // fall through | |
| 2747 case Bytecodes::_fast_cputfield: __ movw(lo, rax); break; | |
| 2748 case Bytecodes::_fast_iputfield: __ movl(lo, rax); break; | |
| 304 | 2749 case Bytecodes::_fast_lputfield: |
| 2750 NOT_LP64(__ movptr(hi, rdx)); | |
| 2751 __ movptr(lo, rax); | |
| 2752 break; | |
| 0 | 2753 case Bytecodes::_fast_fputfield: __ fstp_s(lo); break; |
| 2754 case Bytecodes::_fast_dputfield: __ fstp_d(lo); break; | |
|
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2755 case Bytecodes::_fast_aputfield: { |
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2756 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
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2757 break; |
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2758 } |
| 0 | 2759 default: |
| 2760 ShouldNotReachHere(); | |
| 2761 } | |
| 2762 __ bind(done); | |
| 2763 } | |
| 2764 | |
| 2765 | |
| 2766 void TemplateTable::fast_accessfield(TosState state) { | |
| 2767 transition(atos, state); | |
| 2768 | |
| 2769 // do the JVMTI work here to avoid disturbing the register state below | |
| 2770 if (JvmtiExport::can_post_field_access()) { | |
| 2771 // Check to see if a field access watch has been set before we take | |
| 2772 // the time to call into the VM. | |
| 2773 Label L1; | |
| 2774 __ mov32(rcx, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
| 2775 __ testl(rcx,rcx); | |
| 2776 __ jcc(Assembler::zero, L1); | |
| 2777 // access constant pool cache entry | |
| 2778 __ get_cache_entry_pointer_at_bcp(rcx, rdx, 1); | |
| 2779 __ push_ptr(rax); // save object pointer before call_VM() clobbers it | |
| 2780 __ verify_oop(rax); | |
| 2781 // rax,: object pointer copied above | |
| 2782 // rcx: cache entry pointer | |
| 2783 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), rax, rcx); | |
| 2784 __ pop_ptr(rax); // restore object pointer | |
| 2785 __ bind(L1); | |
| 2786 } | |
| 2787 | |
| 2788 // access constant pool cache | |
| 2789 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
| 2790 // replace index with field offset from cache entry | |
| 304 | 2791 __ movptr(rbx, Address(rcx, |
| 2792 rbx, | |
| 2793 Address::times_ptr, | |
|
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2794 in_bytes(ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::f2_offset()))); |
| 0 | 2795 |
| 2796 | |
| 2797 // rax,: object | |
| 2798 __ verify_oop(rax); | |
| 2799 __ null_check(rax); | |
| 2800 // field addresses | |
| 2801 const Address lo = Address(rax, rbx, Address::times_1, 0*wordSize); | |
| 2802 const Address hi = Address(rax, rbx, Address::times_1, 1*wordSize); | |
| 2803 | |
| 2804 // access field | |
| 2805 switch (bytecode()) { | |
| 304 | 2806 case Bytecodes::_fast_bgetfield: __ movsbl(rax, lo ); break; |
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2807 case Bytecodes::_fast_sgetfield: __ load_signed_short(rax, lo ); break; |
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2808 case Bytecodes::_fast_cgetfield: __ load_unsigned_short(rax, lo ); break; |
| 0 | 2809 case Bytecodes::_fast_igetfield: __ movl(rax, lo); break; |
| 2810 case Bytecodes::_fast_lgetfield: __ stop("should not be rewritten"); break; | |
| 2811 case Bytecodes::_fast_fgetfield: __ fld_s(lo); break; | |
| 2812 case Bytecodes::_fast_dgetfield: __ fld_d(lo); break; | |
| 304 | 2813 case Bytecodes::_fast_agetfield: __ movptr(rax, lo); __ verify_oop(rax); break; |
| 0 | 2814 default: |
| 2815 ShouldNotReachHere(); | |
| 2816 } | |
| 2817 | |
| 2818 // Doug Lea believes this is not needed with current Sparcs(TSO) and Intel(PSO) | |
| 2819 // volatile_barrier( ); | |
| 2820 } | |
| 2821 | |
| 2822 void TemplateTable::fast_xaccess(TosState state) { | |
| 2823 transition(vtos, state); | |
| 2824 // get receiver | |
| 304 | 2825 __ movptr(rax, aaddress(0)); |
| 0 | 2826 // access constant pool cache |
| 2827 __ get_cache_and_index_at_bcp(rcx, rdx, 2); | |
| 304 | 2828 __ movptr(rbx, Address(rcx, |
| 2829 rdx, | |
| 2830 Address::times_ptr, | |
|
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2831 in_bytes(ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::f2_offset()))); |
| 0 | 2832 // make sure exception is reported in correct bcp range (getfield is next instruction) |
| 2833 __ increment(rsi); | |
| 2834 __ null_check(rax); | |
| 2835 const Address lo = Address(rax, rbx, Address::times_1, 0*wordSize); | |
| 2836 if (state == itos) { | |
| 2837 __ movl(rax, lo); | |
| 2838 } else if (state == atos) { | |
| 304 | 2839 __ movptr(rax, lo); |
| 0 | 2840 __ verify_oop(rax); |
| 2841 } else if (state == ftos) { | |
| 2842 __ fld_s(lo); | |
| 2843 } else { | |
| 2844 ShouldNotReachHere(); | |
| 2845 } | |
| 2846 __ decrement(rsi); | |
| 2847 } | |
| 2848 | |
| 2849 | |
| 2850 | |
| 2851 //---------------------------------------------------------------------------------------------------- | |
| 2852 // Calls | |
| 2853 | |
| 2854 void TemplateTable::count_calls(Register method, Register temp) { | |
| 2855 // implemented elsewhere | |
| 2856 ShouldNotReachHere(); | |
| 2857 } | |
| 2858 | |
| 2859 | |
|
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2860 void TemplateTable::prepare_invoke(int byte_no, |
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2861 Register method, // linked method (or i-klass) |
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2862 Register index, // itable index, MethodType, etc. |
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2863 Register recv, // if caller wants to see it |
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2864 Register flags // if caller wants to test it |
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2865 ) { |
| 0 | 2866 // determine flags |
|
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2867 const Bytecodes::Code code = bytecode(); |
| 0 | 2868 const bool is_invokeinterface = code == Bytecodes::_invokeinterface; |
|
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2869 const bool is_invokedynamic = code == Bytecodes::_invokedynamic; |
|
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2870 const bool is_invokehandle = code == Bytecodes::_invokehandle; |
| 0 | 2871 const bool is_invokevirtual = code == Bytecodes::_invokevirtual; |
| 2872 const bool is_invokespecial = code == Bytecodes::_invokespecial; | |
|
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2873 const bool load_receiver = (recv != noreg); |
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2874 const bool save_flags = (flags != noreg); |
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2875 assert(load_receiver == (code != Bytecodes::_invokestatic && code != Bytecodes::_invokedynamic), ""); |
|
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2876 assert(save_flags == (is_invokeinterface || is_invokevirtual), "need flags for vfinal"); |
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2877 assert(flags == noreg || flags == rdx, ""); |
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2878 assert(recv == noreg || recv == rcx, ""); |
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2879 |
| 0 | 2880 // setup registers & access constant pool cache |
|
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2881 if (recv == noreg) recv = rcx; |
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2882 if (flags == noreg) flags = rdx; |
| 0 | 2883 assert_different_registers(method, index, recv, flags); |
| 2884 | |
| 2885 // save 'interpreter return address' | |
| 2886 __ save_bcp(); | |
| 2887 | |
| 1565 | 2888 load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual, false, is_invokedynamic); |
| 0 | 2889 |
|
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2890 // maybe push appendix to arguments (just before return address) |
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2891 if (is_invokedynamic || is_invokehandle) { |
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2892 Label L_no_push; |
|
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2893 __ testl(flags, (1 << ConstantPoolCacheEntry::has_appendix_shift)); |
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2894 __ jccb(Assembler::zero, L_no_push); |
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2895 // Push the appendix as a trailing parameter. |
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2896 // This must be done before we get the receiver, |
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2897 // since the parameter_size includes it. |
|
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2898 __ push(rbx); |
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2899 __ mov(rbx, index); |
|
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2900 assert(ConstantPoolCacheEntry::_indy_resolved_references_appendix_offset == 0, "appendix expected at index+0"); |
|
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2901 __ load_resolved_reference_at_index(index, rbx); |
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2902 __ pop(rbx); |
|
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2903 __ push(index); // push appendix (MethodType, CallSite, etc.) |
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2904 __ bind(L_no_push); |
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2905 } |
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2906 |
| 0 | 2907 // load receiver if needed (note: no return address pushed yet) |
| 2908 if (load_receiver) { | |
| 2909 __ movl(recv, flags); | |
|
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2910 __ andl(recv, ConstantPoolCacheEntry::parameter_size_mask); |
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2911 const int no_return_pc_pushed_yet = -1; // argument slot correction before we push return address |
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2912 const int receiver_is_at_end = -1; // back off one slot to get receiver |
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2913 Address recv_addr = __ argument_address(recv, no_return_pc_pushed_yet + receiver_is_at_end); |
| 1304 | 2914 __ movptr(recv, recv_addr); |
| 2915 __ verify_oop(recv); | |
| 0 | 2916 } |
| 2917 | |
| 2918 if (save_flags) { | |
| 304 | 2919 __ mov(rsi, flags); |
| 0 | 2920 } |
| 2921 | |
| 2922 // compute return type | |
|
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2923 __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift); |
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2924 // Make sure we don't need to mask flags after the above shift |
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2925 ConstantPoolCacheEntry::verify_tos_state_shift(); |
| 0 | 2926 // load return address |
| 304 | 2927 { |
|
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2928 const address table_addr = (is_invokeinterface || is_invokedynamic) ? |
|
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2929 (address)Interpreter::return_5_addrs_by_index_table() : |
|
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2930 (address)Interpreter::return_3_addrs_by_index_table(); |
|
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2931 ExternalAddress table(table_addr); |
| 304 | 2932 __ movptr(flags, ArrayAddress(table, Address(noreg, flags, Address::times_ptr))); |
| 0 | 2933 } |
| 2934 | |
| 2935 // push return address | |
| 304 | 2936 __ push(flags); |
| 0 | 2937 |
|
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2938 // Restore flags value from the constant pool cache, and restore rsi |
| 0 | 2939 // for later null checks. rsi is the bytecode pointer |
| 2940 if (save_flags) { | |
| 304 | 2941 __ mov(flags, rsi); |
| 0 | 2942 __ restore_bcp(); |
| 2943 } | |
| 2944 } | |
| 2945 | |
| 2946 | |
|
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2947 void TemplateTable::invokevirtual_helper(Register index, |
|
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2948 Register recv, |
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2949 Register flags) { |
| 0 | 2950 // Uses temporary registers rax, rdx |
| 2951 assert_different_registers(index, recv, rax, rdx); | |
|
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2952 assert(index == rbx, ""); |
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2953 assert(recv == rcx, ""); |
| 0 | 2954 |
| 2955 // Test for an invoke of a final method | |
| 2956 Label notFinal; | |
| 2957 __ movl(rax, flags); | |
|
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2958 __ andl(rax, (1 << ConstantPoolCacheEntry::is_vfinal_shift)); |
| 0 | 2959 __ jcc(Assembler::zero, notFinal); |
| 2960 | |
|
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2961 const Register method = index; // method must be rbx |
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2962 assert(method == rbx, |
|
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2963 "Method* must be rbx for interpreter calling convention"); |
| 0 | 2964 |
| 2965 // do the call - the index is actually the method to call | |
|
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2966 // that is, f2 is a vtable index if !is_vfinal, else f2 is a Method* |
| 0 | 2967 |
| 2968 // It's final, need a null check here! | |
| 2969 __ null_check(recv); | |
| 2970 | |
| 2971 // profile this call | |
| 2972 __ profile_final_call(rax); | |
| 2973 | |
| 2974 __ jump_from_interpreted(method, rax); | |
| 2975 | |
| 2976 __ bind(notFinal); | |
| 2977 | |
| 2978 // get receiver klass | |
| 2979 __ null_check(recv, oopDesc::klass_offset_in_bytes()); | |
|
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2980 __ load_klass(rax, recv); |
| 0 | 2981 |
| 2982 // profile this call | |
| 2983 __ profile_virtual_call(rax, rdi, rdx); | |
| 2984 | |
|
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2985 // get target Method* & entry point |
|
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2986 __ lookup_virtual_method(rax, index, method); |
| 0 | 2987 __ jump_from_interpreted(method, rdx); |
| 2988 } | |
| 2989 | |
| 2990 | |
| 2991 void TemplateTable::invokevirtual(int byte_no) { | |
| 2992 transition(vtos, vtos); | |
| 1565 | 2993 assert(byte_no == f2_byte, "use this argument"); |
|
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2994 prepare_invoke(byte_no, |
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2995 rbx, // method or vtable index |
|
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2996 noreg, // unused itable index |
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|
2997 rcx, rdx); // recv, flags |
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2998 |
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|
2999 // rbx: index |
| 0 | 3000 // rcx: receiver |
| 3001 // rdx: flags | |
| 3002 | |
| 3003 invokevirtual_helper(rbx, rcx, rdx); | |
| 3004 } | |
| 3005 | |
| 3006 | |
| 3007 void TemplateTable::invokespecial(int byte_no) { | |
| 3008 transition(vtos, vtos); | |
| 1565 | 3009 assert(byte_no == f1_byte, "use this argument"); |
|
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3010 prepare_invoke(byte_no, rbx, noreg, // get f1 Method* |
|
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|
3011 rcx); // get receiver also for null check |
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3012 __ verify_oop(rcx); |
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3013 __ null_check(rcx); |
| 0 | 3014 // do the call |
| 3015 __ profile_call(rax); | |
| 3016 __ jump_from_interpreted(rbx, rax); | |
| 3017 } | |
| 3018 | |
| 3019 | |
| 3020 void TemplateTable::invokestatic(int byte_no) { | |
| 3021 transition(vtos, vtos); | |
| 1565 | 3022 assert(byte_no == f1_byte, "use this argument"); |
|
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3023 prepare_invoke(byte_no, rbx); // get f1 Method* |
| 0 | 3024 // do the call |
| 3025 __ profile_call(rax); | |
| 3026 __ jump_from_interpreted(rbx, rax); | |
| 3027 } | |
| 3028 | |
| 3029 | |
| 3030 void TemplateTable::fast_invokevfinal(int byte_no) { | |
| 3031 transition(vtos, vtos); | |
| 1565 | 3032 assert(byte_no == f2_byte, "use this argument"); |
| 0 | 3033 __ stop("fast_invokevfinal not used on x86"); |
| 3034 } | |
| 3035 | |
| 3036 | |
| 3037 void TemplateTable::invokeinterface(int byte_no) { | |
| 3038 transition(vtos, vtos); | |
| 1565 | 3039 assert(byte_no == f1_byte, "use this argument"); |
|
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3040 prepare_invoke(byte_no, rax, rbx, // get f1 Klass*, f2 itable index |
|
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|
3041 rcx, rdx); // recv, flags |
|
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|
3042 |
|
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|
3043 // rax: interface klass (from f1) |
|
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|
3044 // rbx: itable index (from f2) |
| 0 | 3045 // rcx: receiver |
| 3046 // rdx: flags | |
| 3047 | |
| 3048 // Special case of invokeinterface called for virtual method of | |
| 3049 // java.lang.Object. See cpCacheOop.cpp for details. | |
| 3050 // This code isn't produced by javac, but could be produced by | |
| 3051 // another compliant java compiler. | |
| 3052 Label notMethod; | |
| 3053 __ movl(rdi, rdx); | |
|
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|
3054 __ andl(rdi, (1 << ConstantPoolCacheEntry::is_forced_virtual_shift)); |
| 0 | 3055 __ jcc(Assembler::zero, notMethod); |
| 3056 | |
| 3057 invokevirtual_helper(rbx, rcx, rdx); | |
| 3058 __ bind(notMethod); | |
| 3059 | |
| 3060 // Get receiver klass into rdx - also a null check | |
| 3061 __ restore_locals(); // restore rdi | |
|
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|
3062 __ null_check(rcx, oopDesc::klass_offset_in_bytes()); |
|
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|
3063 __ load_klass(rdx, rcx); |
| 0 | 3064 |
| 3065 // profile this call | |
| 3066 __ profile_virtual_call(rdx, rsi, rdi); | |
| 3067 | |
|
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|
3068 Label no_such_interface, no_such_method; |
|
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|
3069 |
|
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|
3070 __ lookup_interface_method(// inputs: rec. class, interface, itable index |
|
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|
3071 rdx, rax, rbx, |
|
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|
3072 // outputs: method, scan temp. reg |
|
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|
3073 rbx, rsi, |
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|
3074 no_such_interface); |
|
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|
3075 |
|
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|
3076 // rbx: Method* to call |
|
623
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|
3077 // rcx: receiver |
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|
3078 // Check for abstract method error |
|
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|
3079 // Note: This should be done more efficiently via a throw_abstract_method_error |
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|
3080 // interpreter entry point and a conditional jump to it in case of a null |
|
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|
3081 // method. |
|
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|
3082 __ testptr(rbx, rbx); |
|
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|
3083 __ jcc(Assembler::zero, no_such_method); |
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|
3084 |
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|
3085 // do the call |
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|
3086 // rcx: receiver |
|
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3087 // rbx,: Method* |
|
623
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|
3088 __ jump_from_interpreted(rbx, rdx); |
|
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|
3089 __ should_not_reach_here(); |
|
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|
3090 |
|
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|
3091 // exception handling code follows... |
|
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|
3092 // note: must restore interpreter registers to canonical |
|
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|
3093 // state for exception handling to work correctly! |
|
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|
3094 |
|
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|
3095 __ bind(no_such_method); |
| 0 | 3096 // throw exception |
|
623
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|
3097 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
|
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|
3098 __ restore_bcp(); // rsi must be correct for exception handler (was destroyed) |
|
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|
3099 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
|
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|
3100 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError)); |
|
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|
3101 // the call_VM checks for exception, so we should never return here. |
|
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|
3102 __ should_not_reach_here(); |
|
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|
3103 |
|
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|
3104 __ bind(no_such_interface); |
|
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|
3105 // throw exception |
| 304 | 3106 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
| 0 | 3107 __ restore_bcp(); // rsi must be correct for exception handler (was destroyed) |
| 3108 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) | |
| 3109 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
| 3110 InterpreterRuntime::throw_IncompatibleClassChangeError)); | |
| 3111 // the call_VM checks for exception, so we should never return here. | |
| 3112 __ should_not_reach_here(); | |
| 3113 } | |
| 3114 | |
|
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|
3115 void TemplateTable::invokehandle(int byte_no) { |
|
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|
3116 transition(vtos, vtos); |
|
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3117 assert(byte_no == f1_byte, "use this argument"); |
|
6822
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|
3118 const Register rbx_method = rbx; |
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|
3119 const Register rax_mtype = rax; |
|
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3120 const Register rcx_recv = rcx; |
|
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|
3121 const Register rdx_flags = rdx; |
|
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|
3122 |
|
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|
3123 if (!EnableInvokeDynamic) { |
|
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|
3124 // rewriter does not generate this bytecode |
|
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|
3125 __ should_not_reach_here(); |
|
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|
3126 return; |
|
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|
3127 } |
|
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|
3128 |
|
6822
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|
3129 prepare_invoke(byte_no, rbx_method, rax_mtype, rcx_recv); |
|
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|
3130 __ verify_method_ptr(rbx_method); |
|
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|
3131 __ verify_oop(rcx_recv); |
|
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|
3132 __ null_check(rcx_recv); |
|
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|
3133 |
|
6822
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|
3134 // rax: MethodType object (from cpool->resolved_references[f1], if necessary) |
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|
3135 // rbx: MH.invokeExact_MT method (from f2) |
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|
3136 |
|
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|
3137 // Note: rax_mtype is already pushed (if necessary) by prepare_invoke |
|
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|
3138 |
|
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|
3139 // FIXME: profile the LambdaForm also |
|
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|
3140 __ profile_final_call(rax); |
|
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|
3141 |
|
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|
3142 __ jump_from_interpreted(rbx_method, rdx); |
|
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|
3143 } |
|
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|
3144 |
|
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|
3145 |
|
726
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6655646: dynamic languages need dynamically linked call sites
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|
3146 void TemplateTable::invokedynamic(int byte_no) { |
|
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|
3147 transition(vtos, vtos); |
|
6725
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|
3148 assert(byte_no == f1_byte, "use this argument"); |
|
726
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6655646: dynamic languages need dynamically linked call sites
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628
diff
changeset
|
3149 |
|
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628
diff
changeset
|
3150 if (!EnableInvokeDynamic) { |
|
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6655646: dynamic languages need dynamically linked call sites
jrose
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628
diff
changeset
|
3151 // We should not encounter this bytecode if !EnableInvokeDynamic. |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
628
diff
changeset
|
3152 // The verifier will stop it. However, if we get past the verifier, |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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diff
changeset
|
3153 // this will stop the thread in a reasonable way, without crashing the JVM. |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
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diff
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|
3154 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
|
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6655646: dynamic languages need dynamically linked call sites
jrose
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628
diff
changeset
|
3155 InterpreterRuntime::throw_IncompatibleClassChangeError)); |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
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diff
changeset
|
3156 // the call_VM checks for exception, so we should never return here. |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
628
diff
changeset
|
3157 __ should_not_reach_here(); |
|
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diff
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|
3158 return; |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
628
diff
changeset
|
3159 } |
|
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jrose
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diff
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|
3160 |
|
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|
3161 const Register rbx_method = rbx; |
|
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|
3162 const Register rax_callsite = rax; |
|
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|
3163 |
|
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|
3164 prepare_invoke(byte_no, rbx_method, rax_callsite); |
|
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|
3165 |
|
6822
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|
3166 // rax: CallSite object (from cpool->resolved_references[f1]) |
|
6266
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|
3167 // rbx: MH.linkToCallSite method (from f2) |
|
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|
3168 |
|
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|
3169 // Note: rax_callsite is already pushed by prepare_invoke |
| 1846 | 3170 |
|
3279
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|
3171 // %%% should make a type profile for any invokedynamic that takes a ref argument |
|
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|
3172 // profile this call |
|
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|
3173 __ profile_call(rsi); |
|
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|
3174 |
|
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|
3175 __ verify_oop(rax_callsite); |
|
6266
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|
3176 |
|
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|
3177 __ jump_from_interpreted(rbx_method, rdx); |
|
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|
3178 } |
|
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|
3179 |
| 0 | 3180 //---------------------------------------------------------------------------------------------------- |
| 3181 // Allocation | |
| 3182 | |
| 3183 void TemplateTable::_new() { | |
| 3184 transition(vtos, atos); | |
| 3185 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
| 3186 Label slow_case; | |
|
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|
3187 Label slow_case_no_pop; |
| 0 | 3188 Label done; |
| 3189 Label initialize_header; | |
| 3190 Label initialize_object; // including clearing the fields | |
| 3191 Label allocate_shared; | |
| 3192 | |
| 3193 __ get_cpool_and_tags(rcx, rax); | |
|
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|
3194 |
|
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|
3195 // Make sure the class we're about to instantiate has been resolved. |
|
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3196 // This is done before loading InstanceKlass to be consistent with the order |
|
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|
3197 // how Constant Pool is updated (see ConstantPool::klass_at_put) |
|
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|
3198 const int tags_offset = Array<u1>::base_offset_in_bytes(); |
|
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|
3199 __ cmpb(Address(rax, rdx, Address::times_1, tags_offset), JVM_CONSTANT_Class); |
|
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|
3200 __ jcc(Assembler::notEqual, slow_case_no_pop); |
|
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|
3201 |
|
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|
3202 // get InstanceKlass |
|
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|
3203 __ movptr(rcx, Address(rcx, rdx, Address::times_ptr, sizeof(ConstantPool))); |
| 304 | 3204 __ push(rcx); // save the contexts of klass for initializing the header |
| 0 | 3205 |
| 3206 // make sure klass is initialized & doesn't have finalizer | |
| 3207 // make sure klass is fully initialized | |
|
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|
3208 __ cmpb(Address(rcx, InstanceKlass::init_state_offset()), InstanceKlass::fully_initialized); |
| 0 | 3209 __ jcc(Assembler::notEqual, slow_case); |
| 3210 | |
|
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|
3211 // get instance_size in InstanceKlass (scaled to a count of bytes) |
|
4762
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|
3212 __ movl(rdx, Address(rcx, Klass::layout_helper_offset())); |
| 0 | 3213 // test to see if it has a finalizer or is malformed in some way |
| 3214 __ testl(rdx, Klass::_lh_instance_slow_path_bit); | |
| 3215 __ jcc(Assembler::notZero, slow_case); | |
| 3216 | |
| 3217 // | |
| 3218 // Allocate the instance | |
| 3219 // 1) Try to allocate in the TLAB | |
| 3220 // 2) if fail and the object is large allocate in the shared Eden | |
| 3221 // 3) if the above fails (or is not applicable), go to a slow case | |
| 3222 // (creates a new TLAB, etc.) | |
| 3223 | |
| 3224 const bool allow_shared_alloc = | |
| 3225 Universe::heap()->supports_inline_contig_alloc() && !CMSIncrementalMode; | |
| 3226 | |
|
2100
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diff
changeset
|
3227 const Register thread = rcx; |
|
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diff
changeset
|
3228 if (UseTLAB || allow_shared_alloc) { |
|
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diff
changeset
|
3229 __ get_thread(thread); |
|
b1a2afa37ec4
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diff
changeset
|
3230 } |
|
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diff
changeset
|
3231 |
| 0 | 3232 if (UseTLAB) { |
| 304 | 3233 __ movptr(rax, Address(thread, in_bytes(JavaThread::tlab_top_offset()))); |
| 3234 __ lea(rbx, Address(rax, rdx, Address::times_1)); | |
| 3235 __ cmpptr(rbx, Address(thread, in_bytes(JavaThread::tlab_end_offset()))); | |
| 0 | 3236 __ jcc(Assembler::above, allow_shared_alloc ? allocate_shared : slow_case); |
| 304 | 3237 __ movptr(Address(thread, in_bytes(JavaThread::tlab_top_offset())), rbx); |
| 0 | 3238 if (ZeroTLAB) { |
| 3239 // the fields have been already cleared | |
| 3240 __ jmp(initialize_header); | |
| 3241 } else { | |
| 3242 // initialize both the header and fields | |
| 3243 __ jmp(initialize_object); | |
| 3244 } | |
| 3245 } | |
| 3246 | |
| 3247 // Allocation in the shared Eden, if allowed. | |
| 3248 // | |
| 3249 // rdx: instance size in bytes | |
| 3250 if (allow_shared_alloc) { | |
| 3251 __ bind(allocate_shared); | |
| 3252 | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
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parents:
107
diff
changeset
|
3253 ExternalAddress heap_top((address)Universe::heap()->top_addr()); |
|
37f87013dfd8
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107
diff
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|
3254 |
| 0 | 3255 Label retry; |
| 3256 __ bind(retry); | |
| 304 | 3257 __ movptr(rax, heap_top); |
| 3258 __ lea(rbx, Address(rax, rdx, Address::times_1)); | |
| 3259 __ cmpptr(rbx, ExternalAddress((address)Universe::heap()->end_addr())); | |
| 0 | 3260 __ jcc(Assembler::above, slow_case); |
| 3261 | |
| 3262 // Compare rax, with the top addr, and if still equal, store the new | |
| 3263 // top addr in rbx, at the address of the top addr pointer. Sets ZF if was | |
| 3264 // equal, and clears it otherwise. Use lock prefix for atomicity on MPs. | |
| 3265 // | |
| 3266 // rax,: object begin | |
| 3267 // rbx,: object end | |
| 3268 // rdx: instance size in bytes | |
| 304 | 3269 __ locked_cmpxchgptr(rbx, heap_top); |
| 0 | 3270 |
| 3271 // if someone beat us on the allocation, try again, otherwise continue | |
| 3272 __ jcc(Assembler::notEqual, retry); | |
|
2100
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diff
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|
3273 |
|
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diff
changeset
|
3274 __ incr_allocated_bytes(thread, rdx, 0); |
| 0 | 3275 } |
| 3276 | |
| 3277 if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) { | |
| 3278 // The object is initialized before the header. If the object size is | |
| 3279 // zero, go directly to the header initialization. | |
| 3280 __ bind(initialize_object); | |
| 3281 __ decrement(rdx, sizeof(oopDesc)); | |
| 3282 __ jcc(Assembler::zero, initialize_header); | |
| 3283 | |
|
2100
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diff
changeset
|
3284 // Initialize topmost object field, divide rdx by 8, check if odd and |
|
b1a2afa37ec4
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diff
changeset
|
3285 // test if zero. |
| 0 | 3286 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) |
| 3287 __ shrl(rdx, LogBytesPerLong); // divide by 2*oopSize and set carry flag if odd | |
| 3288 | |
|
2100
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diff
changeset
|
3289 // rdx must have been multiple of 8 |
| 0 | 3290 #ifdef ASSERT |
| 3291 // make sure rdx was multiple of 8 | |
| 3292 Label L; | |
| 3293 // Ignore partial flag stall after shrl() since it is debug VM | |
| 3294 __ jccb(Assembler::carryClear, L); | |
| 3295 __ stop("object size is not multiple of 2 - adjust this code"); | |
| 3296 __ bind(L); | |
| 3297 // rdx must be > 0, no extra check needed here | |
| 3298 #endif | |
| 3299 | |
| 3300 // initialize remaining object fields: rdx was a multiple of 8 | |
| 3301 { Label loop; | |
| 3302 __ bind(loop); | |
| 304 | 3303 __ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 1*oopSize), rcx); |
| 3304 NOT_LP64(__ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 2*oopSize), rcx)); | |
| 0 | 3305 __ decrement(rdx); |
| 3306 __ jcc(Assembler::notZero, loop); | |
| 3307 } | |
| 3308 | |
| 3309 // initialize object header only. | |
| 3310 __ bind(initialize_header); | |
| 3311 if (UseBiasedLocking) { | |
| 304 | 3312 __ pop(rcx); // get saved klass back in the register. |
|
4762
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diff
changeset
|
3313 __ movptr(rbx, Address(rcx, Klass::prototype_header_offset())); |
| 304 | 3314 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()), rbx); |
| 0 | 3315 } else { |
| 304 | 3316 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()), |
| 3317 (int32_t)markOopDesc::prototype()); // header | |
| 3318 __ pop(rcx); // get saved klass back in the register. | |
| 0 | 3319 } |
|
3275
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2416
diff
changeset
|
3320 __ store_klass(rax, rcx); // klass |
| 0 | 3321 |
| 3322 { | |
| 3323 SkipIfEqual skip_if(_masm, &DTraceAllocProbes, 0); | |
| 3324 // Trigger dtrace event for fastpath | |
| 3325 __ push(atos); | |
| 3326 __ call_VM_leaf( | |
| 3327 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), rax); | |
| 3328 __ pop(atos); | |
| 3329 } | |
| 3330 | |
| 3331 __ jmp(done); | |
| 3332 } | |
| 3333 | |
| 3334 // slow case | |
| 3335 __ bind(slow_case); | |
| 304 | 3336 __ pop(rcx); // restore stack pointer to what it was when we came in. |
|
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|
3337 __ bind(slow_case_no_pop); |
| 0 | 3338 __ get_constant_pool(rax); |
| 3339 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
| 3340 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), rax, rdx); | |
| 3341 | |
| 3342 // continue | |
| 3343 __ bind(done); | |
| 3344 } | |
| 3345 | |
| 3346 | |
| 3347 void TemplateTable::newarray() { | |
| 3348 transition(itos, atos); | |
| 3349 __ push_i(rax); // make sure everything is on the stack | |
| 3350 __ load_unsigned_byte(rdx, at_bcp(1)); | |
| 3351 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray), rdx, rax); | |
| 3352 __ pop_i(rdx); // discard size | |
| 3353 } | |
| 3354 | |
| 3355 | |
| 3356 void TemplateTable::anewarray() { | |
| 3357 transition(itos, atos); | |
| 3358 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
| 3359 __ get_constant_pool(rcx); | |
| 3360 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray), rcx, rdx, rax); | |
| 3361 } | |
| 3362 | |
| 3363 | |
| 3364 void TemplateTable::arraylength() { | |
| 3365 transition(atos, itos); | |
| 3366 __ null_check(rax, arrayOopDesc::length_offset_in_bytes()); | |
| 3367 __ movl(rax, Address(rax, arrayOopDesc::length_offset_in_bytes())); | |
| 3368 } | |
| 3369 | |
| 3370 | |
| 3371 void TemplateTable::checkcast() { | |
| 3372 transition(atos, atos); | |
| 3373 Label done, is_null, ok_is_subtype, quicked, resolved; | |
| 304 | 3374 __ testptr(rax, rax); // Object is in EAX |
| 0 | 3375 __ jcc(Assembler::zero, is_null); |
| 3376 | |
| 3377 // Get cpool & tags index | |
| 3378 __ get_cpool_and_tags(rcx, rdx); // ECX=cpool, EDX=tags array | |
| 3379 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // EBX=index | |
| 3380 // See if bytecode has already been quicked | |
|
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|
3381 __ cmpb(Address(rdx, rbx, Address::times_1, Array<u1>::base_offset_in_bytes()), JVM_CONSTANT_Class); |
| 0 | 3382 __ jcc(Assembler::equal, quicked); |
| 3383 | |
| 3384 __ push(atos); | |
|
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|
3385 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) ); |
|
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|
3386 // vm_result_2 has metadata result |
|
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|
3387 // borrow rdi from locals |
|
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|
3388 __ get_thread(rdi); |
|
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|
3389 __ get_vm_result_2(rax, rdi); |
|
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|
3390 __ restore_locals(); |
| 0 | 3391 __ pop_ptr(rdx); |
| 3392 __ jmpb(resolved); | |
| 3393 | |
| 3394 // Get superklass in EAX and subklass in EBX | |
| 3395 __ bind(quicked); | |
| 304 | 3396 __ mov(rdx, rax); // Save object in EDX; EAX needed for subtype check |
|
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|
3397 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, sizeof(ConstantPool))); |
| 0 | 3398 |
| 3399 __ bind(resolved); | |
|
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|
3400 __ load_klass(rbx, rdx); |
| 0 | 3401 |
| 3402 // Generate subtype check. Blows ECX. Resets EDI. Object in EDX. | |
| 3403 // Superklass in EAX. Subklass in EBX. | |
| 3404 __ gen_subtype_check( rbx, ok_is_subtype ); | |
| 3405 | |
| 3406 // Come here on failure | |
| 304 | 3407 __ push(rdx); |
| 0 | 3408 // object is at TOS |
| 3409 __ jump(ExternalAddress(Interpreter::_throw_ClassCastException_entry)); | |
| 3410 | |
| 3411 // Come here on success | |
| 3412 __ bind(ok_is_subtype); | |
| 304 | 3413 __ mov(rax,rdx); // Restore object in EDX |
| 0 | 3414 |
| 3415 // Collect counts on whether this check-cast sees NULLs a lot or not. | |
| 3416 if (ProfileInterpreter) { | |
| 3417 __ jmp(done); | |
| 3418 __ bind(is_null); | |
| 3419 __ profile_null_seen(rcx); | |
| 3420 } else { | |
| 3421 __ bind(is_null); // same as 'done' | |
| 3422 } | |
| 3423 __ bind(done); | |
| 3424 } | |
| 3425 | |
| 3426 | |
| 3427 void TemplateTable::instanceof() { | |
| 3428 transition(atos, itos); | |
| 3429 Label done, is_null, ok_is_subtype, quicked, resolved; | |
| 304 | 3430 __ testptr(rax, rax); |
| 0 | 3431 __ jcc(Assembler::zero, is_null); |
| 3432 | |
| 3433 // Get cpool & tags index | |
| 3434 __ get_cpool_and_tags(rcx, rdx); // ECX=cpool, EDX=tags array | |
| 3435 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // EBX=index | |
| 3436 // See if bytecode has already been quicked | |
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3437 __ cmpb(Address(rdx, rbx, Address::times_1, Array<u1>::base_offset_in_bytes()), JVM_CONSTANT_Class); |
| 0 | 3438 __ jcc(Assembler::equal, quicked); |
| 3439 | |
| 3440 __ push(atos); | |
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3441 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) ); |
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3442 // vm_result_2 has metadata result |
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3443 // borrow rdi from locals |
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3444 __ get_thread(rdi); |
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3445 __ get_vm_result_2(rax, rdi); |
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3446 __ restore_locals(); |
| 0 | 3447 __ pop_ptr(rdx); |
|
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3448 __ load_klass(rdx, rdx); |
| 0 | 3449 __ jmp(resolved); |
| 3450 | |
| 3451 // Get superklass in EAX and subklass in EDX | |
| 3452 __ bind(quicked); | |
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3453 __ load_klass(rdx, rax); |
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3454 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, sizeof(ConstantPool))); |
| 0 | 3455 |
| 3456 __ bind(resolved); | |
| 3457 | |
| 3458 // Generate subtype check. Blows ECX. Resets EDI. | |
| 3459 // Superklass in EAX. Subklass in EDX. | |
| 3460 __ gen_subtype_check( rdx, ok_is_subtype ); | |
| 3461 | |
| 3462 // Come here on failure | |
| 3463 __ xorl(rax,rax); | |
| 3464 __ jmpb(done); | |
| 3465 // Come here on success | |
| 3466 __ bind(ok_is_subtype); | |
| 3467 __ movl(rax, 1); | |
| 3468 | |
| 3469 // Collect counts on whether this test sees NULLs a lot or not. | |
| 3470 if (ProfileInterpreter) { | |
| 3471 __ jmp(done); | |
| 3472 __ bind(is_null); | |
| 3473 __ profile_null_seen(rcx); | |
| 3474 } else { | |
| 3475 __ bind(is_null); // same as 'done' | |
| 3476 } | |
| 3477 __ bind(done); | |
| 3478 // rax, = 0: obj == NULL or obj is not an instanceof the specified klass | |
| 3479 // rax, = 1: obj != NULL and obj is an instanceof the specified klass | |
| 3480 } | |
| 3481 | |
| 3482 | |
| 3483 //---------------------------------------------------------------------------------------------------- | |
| 3484 // Breakpoints | |
| 3485 void TemplateTable::_breakpoint() { | |
| 3486 | |
| 3487 // Note: We get here even if we are single stepping.. | |
| 3488 // jbug inists on setting breakpoints at every bytecode | |
| 3489 // even if we are in single step mode. | |
| 3490 | |
| 3491 transition(vtos, vtos); | |
| 3492 | |
| 3493 // get the unpatched byte code | |
| 3494 __ get_method(rcx); | |
| 3495 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::get_original_bytecode_at), rcx, rsi); | |
| 304 | 3496 __ mov(rbx, rax); |
| 0 | 3497 |
| 3498 // post the breakpoint event | |
| 3499 __ get_method(rcx); | |
| 3500 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint), rcx, rsi); | |
| 3501 | |
| 3502 // complete the execution of original bytecode | |
| 3503 __ dispatch_only_normal(vtos); | |
| 3504 } | |
| 3505 | |
| 3506 | |
| 3507 //---------------------------------------------------------------------------------------------------- | |
| 3508 // Exceptions | |
| 3509 | |
| 3510 void TemplateTable::athrow() { | |
| 3511 transition(atos, vtos); | |
| 3512 __ null_check(rax); | |
| 3513 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
| 3514 } | |
| 3515 | |
| 3516 | |
| 3517 //---------------------------------------------------------------------------------------------------- | |
| 3518 // Synchronization | |
| 3519 // | |
| 3520 // Note: monitorenter & exit are symmetric routines; which is reflected | |
| 3521 // in the assembly code structure as well | |
| 3522 // | |
| 3523 // Stack layout: | |
| 3524 // | |
| 3525 // [expressions ] <--- rsp = expression stack top | |
| 3526 // .. | |
| 3527 // [expressions ] | |
| 3528 // [monitor entry] <--- monitor block top = expression stack bot | |
| 3529 // .. | |
| 3530 // [monitor entry] | |
| 3531 // [frame data ] <--- monitor block bot | |
| 3532 // ... | |
| 3533 // [saved rbp, ] <--- rbp, | |
| 3534 | |
| 3535 | |
| 3536 void TemplateTable::monitorenter() { | |
| 3537 transition(atos, vtos); | |
| 3538 | |
| 3539 // check for NULL object | |
| 3540 __ null_check(rax); | |
| 3541 | |
| 3542 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 3543 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
| 3544 const int entry_size = ( frame::interpreter_frame_monitor_size() * wordSize); | |
| 3545 Label allocated; | |
| 3546 | |
| 3547 // initialize entry pointer | |
| 3548 __ xorl(rdx, rdx); // points to free slot or NULL | |
| 3549 | |
| 3550 // find a free slot in the monitor block (result in rdx) | |
| 3551 { Label entry, loop, exit; | |
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3552 __ movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry |
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3553 |
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3554 __ lea(rbx, monitor_block_bot); // points to word before bottom of monitor block |
| 0 | 3555 __ jmpb(entry); |
| 3556 | |
| 3557 __ bind(loop); | |
| 304 | 3558 __ cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used |
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3559 __ cmovptr(Assembler::equal, rdx, rcx); // if not used then remember entry in rdx |
| 304 | 3560 __ cmpptr(rax, Address(rcx, BasicObjectLock::obj_offset_in_bytes())); // check if current entry is for same object |
| 3561 __ jccb(Assembler::equal, exit); // if same object then stop searching | |
| 3562 __ addptr(rcx, entry_size); // otherwise advance to next entry | |
| 0 | 3563 __ bind(entry); |
| 304 | 3564 __ cmpptr(rcx, rbx); // check if bottom reached |
| 0 | 3565 __ jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
| 3566 __ bind(exit); | |
| 3567 } | |
| 3568 | |
| 304 | 3569 __ testptr(rdx, rdx); // check if a slot has been found |
| 3570 __ jccb(Assembler::notZero, allocated); // if found, continue with that one | |
| 0 | 3571 |
| 3572 // allocate one if there's no free slot | |
| 3573 { Label entry, loop; | |
| 3574 // 1. compute new pointers // rsp: old expression stack top | |
| 304 | 3575 __ movptr(rdx, monitor_block_bot); // rdx: old expression stack bottom |
| 3576 __ subptr(rsp, entry_size); // move expression stack top | |
| 3577 __ subptr(rdx, entry_size); // move expression stack bottom | |
| 3578 __ mov(rcx, rsp); // set start value for copy loop | |
| 3579 __ movptr(monitor_block_bot, rdx); // set new monitor block top | |
| 0 | 3580 __ jmp(entry); |
| 3581 // 2. move expression stack contents | |
| 3582 __ bind(loop); | |
| 304 | 3583 __ movptr(rbx, Address(rcx, entry_size)); // load expression stack word from old location |
| 3584 __ movptr(Address(rcx, 0), rbx); // and store it at new location | |
| 3585 __ addptr(rcx, wordSize); // advance to next word | |
| 0 | 3586 __ bind(entry); |
| 304 | 3587 __ cmpptr(rcx, rdx); // check if bottom reached |
| 0 | 3588 __ jcc(Assembler::notEqual, loop); // if not at bottom then copy next word |
| 3589 } | |
| 3590 | |
| 3591 // call run-time routine | |
| 3592 // rdx: points to monitor entry | |
| 3593 __ bind(allocated); | |
| 3594 | |
| 3595 // Increment bcp to point to the next bytecode, so exception handling for async. exceptions work correctly. | |
| 3596 // The object has already been poped from the stack, so the expression stack looks correct. | |
| 3597 __ increment(rsi); | |
| 3598 | |
| 304 | 3599 __ movptr(Address(rdx, BasicObjectLock::obj_offset_in_bytes()), rax); // store object |
| 0 | 3600 __ lock_object(rdx); |
| 3601 | |
| 3602 // check to make sure this monitor doesn't cause stack overflow after locking | |
| 3603 __ save_bcp(); // in case of exception | |
| 3604 __ generate_stack_overflow_check(0); | |
| 3605 | |
| 3606 // The bcp has already been incremented. Just need to dispatch to next instruction. | |
| 3607 __ dispatch_next(vtos); | |
| 3608 } | |
| 3609 | |
| 3610 | |
| 3611 void TemplateTable::monitorexit() { | |
| 3612 transition(atos, vtos); | |
| 3613 | |
| 3614 // check for NULL object | |
| 3615 __ null_check(rax); | |
| 3616 | |
| 3617 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 3618 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
| 3619 const int entry_size = ( frame::interpreter_frame_monitor_size() * wordSize); | |
| 3620 Label found; | |
| 3621 | |
| 3622 // find matching slot | |
| 3623 { Label entry, loop; | |
| 304 | 3624 __ movptr(rdx, monitor_block_top); // points to current entry, starting with top-most entry |
| 3625 __ lea(rbx, monitor_block_bot); // points to word before bottom of monitor block | |
| 0 | 3626 __ jmpb(entry); |
| 3627 | |
| 3628 __ bind(loop); | |
| 304 | 3629 __ cmpptr(rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); // check if current entry is for same object |
| 0 | 3630 __ jcc(Assembler::equal, found); // if same object then stop searching |
| 304 | 3631 __ addptr(rdx, entry_size); // otherwise advance to next entry |
| 0 | 3632 __ bind(entry); |
| 304 | 3633 __ cmpptr(rdx, rbx); // check if bottom reached |
| 0 | 3634 __ jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
| 3635 } | |
| 3636 | |
| 3637 // error handling. Unlocking was not block-structured | |
| 3638 Label end; | |
| 3639 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 3640 __ should_not_reach_here(); | |
| 3641 | |
| 3642 // call run-time routine | |
| 3643 // rcx: points to monitor entry | |
| 3644 __ bind(found); | |
| 3645 __ push_ptr(rax); // make sure object is on stack (contract with oopMaps) | |
| 3646 __ unlock_object(rdx); | |
| 3647 __ pop_ptr(rax); // discard object | |
| 3648 __ bind(end); | |
| 3649 } | |
| 3650 | |
| 3651 | |
| 3652 //---------------------------------------------------------------------------------------------------- | |
| 3653 // Wide instructions | |
| 3654 | |
| 3655 void TemplateTable::wide() { | |
| 3656 transition(vtos, vtos); | |
| 3657 __ load_unsigned_byte(rbx, at_bcp(1)); | |
| 304 | 3658 ExternalAddress wtable((address)Interpreter::_wentry_point); |
| 3659 __ jump(ArrayAddress(wtable, Address(noreg, rbx, Address::times_ptr))); | |
| 0 | 3660 // Note: the rsi increment step is part of the individual wide bytecode implementations |
| 3661 } | |
| 3662 | |
| 3663 | |
| 3664 //---------------------------------------------------------------------------------------------------- | |
| 3665 // Multi arrays | |
| 3666 | |
| 3667 void TemplateTable::multianewarray() { | |
| 3668 transition(vtos, atos); | |
| 3669 __ load_unsigned_byte(rax, at_bcp(3)); // get number of dimensions | |
| 3670 // last dim is on top of stack; we want address of first one: | |
| 3671 // first_addr = last_addr + (ndims - 1) * stackElementSize - 1*wordsize | |
| 3672 // the latter wordSize to point to the beginning of the array. | |
| 304 | 3673 __ lea( rax, Address(rsp, rax, Interpreter::stackElementScale(), -wordSize)); |
| 0 | 3674 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), rax); // pass in rax, |
| 3675 __ load_unsigned_byte(rbx, at_bcp(3)); | |
| 304 | 3676 __ lea(rsp, Address(rsp, rbx, Interpreter::stackElementScale())); // get rid of counts |
| 0 | 3677 } |
| 3678 | |
| 3679 #endif /* !CC_INTERP */ |