Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateTable_x86_32.cpp @ 7780:550c952f5d3f
Merge
author | Christian Humer <christian.humer@gmail.com> |
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date | Tue, 12 Feb 2013 16:06:20 +0100 |
parents | cd3d6a6b95d9 |
children | db9981fd3124 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
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26 #include "asm/macroAssembler.hpp" |
1972 | 27 #include "interpreter/interpreter.hpp" |
28 #include "interpreter/interpreterRuntime.hpp" | |
29 #include "interpreter/templateTable.hpp" | |
30 #include "memory/universe.inline.hpp" | |
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31 #include "oops/methodData.hpp" |
1972 | 32 #include "oops/objArrayKlass.hpp" |
33 #include "oops/oop.inline.hpp" | |
34 #include "prims/methodHandles.hpp" | |
35 #include "runtime/sharedRuntime.hpp" | |
36 #include "runtime/stubRoutines.hpp" | |
37 #include "runtime/synchronizer.hpp" | |
0 | 38 |
39 #ifndef CC_INTERP | |
40 #define __ _masm-> | |
41 | |
42 //---------------------------------------------------------------------------------------------------- | |
43 // Platform-dependent initialization | |
44 | |
45 void TemplateTable::pd_initialize() { | |
46 // No i486 specific initialization | |
47 } | |
48 | |
49 //---------------------------------------------------------------------------------------------------- | |
50 // Address computation | |
51 | |
52 // local variables | |
53 static inline Address iaddress(int n) { | |
54 return Address(rdi, Interpreter::local_offset_in_bytes(n)); | |
55 } | |
56 | |
57 static inline Address laddress(int n) { return iaddress(n + 1); } | |
58 static inline Address haddress(int n) { return iaddress(n + 0); } | |
59 static inline Address faddress(int n) { return iaddress(n); } | |
60 static inline Address daddress(int n) { return laddress(n); } | |
61 static inline Address aaddress(int n) { return iaddress(n); } | |
62 | |
63 static inline Address iaddress(Register r) { | |
1506 | 64 return Address(rdi, r, Interpreter::stackElementScale()); |
0 | 65 } |
66 static inline Address laddress(Register r) { | |
67 return Address(rdi, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(1)); | |
68 } | |
69 static inline Address haddress(Register r) { | |
70 return Address(rdi, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(0)); | |
71 } | |
72 | |
1506 | 73 static inline Address faddress(Register r) { return iaddress(r); } |
74 static inline Address daddress(Register r) { return laddress(r); } | |
75 static inline Address aaddress(Register r) { return iaddress(r); } | |
0 | 76 |
77 // expression stack | |
78 // (Note: Must not use symmetric equivalents at_rsp_m1/2 since they store | |
79 // data beyond the rsp which is potentially unsafe in an MT environment; | |
80 // an interrupt may overwrite that data.) | |
81 static inline Address at_rsp () { | |
82 return Address(rsp, 0); | |
83 } | |
84 | |
85 // At top of Java expression stack which may be different than rsp(). It | |
86 // isn't for category 1 objects. | |
87 static inline Address at_tos () { | |
88 Address tos = Address(rsp, Interpreter::expr_offset_in_bytes(0)); | |
89 return tos; | |
90 } | |
91 | |
92 static inline Address at_tos_p1() { | |
93 return Address(rsp, Interpreter::expr_offset_in_bytes(1)); | |
94 } | |
95 | |
96 static inline Address at_tos_p2() { | |
97 return Address(rsp, Interpreter::expr_offset_in_bytes(2)); | |
98 } | |
99 | |
100 // Condition conversion | |
101 static Assembler::Condition j_not(TemplateTable::Condition cc) { | |
102 switch (cc) { | |
103 case TemplateTable::equal : return Assembler::notEqual; | |
104 case TemplateTable::not_equal : return Assembler::equal; | |
105 case TemplateTable::less : return Assembler::greaterEqual; | |
106 case TemplateTable::less_equal : return Assembler::greater; | |
107 case TemplateTable::greater : return Assembler::lessEqual; | |
108 case TemplateTable::greater_equal: return Assembler::less; | |
109 } | |
110 ShouldNotReachHere(); | |
111 return Assembler::zero; | |
112 } | |
113 | |
114 | |
115 //---------------------------------------------------------------------------------------------------- | |
116 // Miscelaneous helper routines | |
117 | |
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118 // Store an oop (or NULL) at the address described by obj. |
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119 // If val == noreg this means store a NULL |
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120 |
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121 static void do_oop_store(InterpreterMacroAssembler* _masm, |
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122 Address obj, |
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123 Register val, |
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124 BarrierSet::Name barrier, |
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125 bool precise) { |
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126 assert(val == noreg || val == rax, "parameter is just for looks"); |
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127 switch (barrier) { |
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128 #ifndef SERIALGC |
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129 case BarrierSet::G1SATBCT: |
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130 case BarrierSet::G1SATBCTLogging: |
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131 { |
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132 // flatten object address if needed |
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133 // We do it regardless of precise because we need the registers |
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134 if (obj.index() == noreg && obj.disp() == 0) { |
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135 if (obj.base() != rdx) { |
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136 __ movl(rdx, obj.base()); |
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137 } |
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138 } else { |
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139 __ leal(rdx, obj); |
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140 } |
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141 __ get_thread(rcx); |
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142 __ save_bcp(); |
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143 __ g1_write_barrier_pre(rdx /* obj */, |
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144 rbx /* pre_val */, |
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145 rcx /* thread */, |
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146 rsi /* tmp */, |
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147 val != noreg /* tosca_live */, |
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148 false /* expand_call */); |
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149 |
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150 // Do the actual store |
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151 // noreg means NULL |
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152 if (val == noreg) { |
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153 __ movptr(Address(rdx, 0), NULL_WORD); |
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154 // No post barrier for NULL |
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155 } else { |
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156 __ movl(Address(rdx, 0), val); |
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157 __ g1_write_barrier_post(rdx /* store_adr */, |
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158 val /* new_val */, |
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159 rcx /* thread */, |
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160 rbx /* tmp */, |
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161 rsi /* tmp2 */); |
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162 } |
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163 __ restore_bcp(); |
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164 |
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165 } |
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166 break; |
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167 #endif // SERIALGC |
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168 case BarrierSet::CardTableModRef: |
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169 case BarrierSet::CardTableExtension: |
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170 { |
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171 if (val == noreg) { |
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172 __ movptr(obj, NULL_WORD); |
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173 } else { |
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174 __ movl(obj, val); |
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175 // flatten object address if needed |
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176 if (!precise || (obj.index() == noreg && obj.disp() == 0)) { |
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177 __ store_check(obj.base()); |
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178 } else { |
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179 __ leal(rdx, obj); |
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180 __ store_check(rdx); |
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181 } |
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182 } |
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183 } |
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184 break; |
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185 case BarrierSet::ModRef: |
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186 case BarrierSet::Other: |
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187 if (val == noreg) { |
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188 __ movptr(obj, NULL_WORD); |
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189 } else { |
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190 __ movl(obj, val); |
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191 } |
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192 break; |
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193 default : |
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194 ShouldNotReachHere(); |
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195 |
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196 } |
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197 } |
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198 |
0 | 199 Address TemplateTable::at_bcp(int offset) { |
200 assert(_desc->uses_bcp(), "inconsistent uses_bcp information"); | |
201 return Address(rsi, offset); | |
202 } | |
203 | |
204 | |
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205 void TemplateTable::patch_bytecode(Bytecodes::Code bc, Register bc_reg, |
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206 Register temp_reg, bool load_bc_into_bc_reg/*=true*/, |
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207 int byte_no) { |
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208 if (!RewriteBytecodes) return; |
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209 Label L_patch_done; |
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210 |
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211 switch (bc) { |
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212 case Bytecodes::_fast_aputfield: |
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213 case Bytecodes::_fast_bputfield: |
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214 case Bytecodes::_fast_cputfield: |
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215 case Bytecodes::_fast_dputfield: |
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216 case Bytecodes::_fast_fputfield: |
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217 case Bytecodes::_fast_iputfield: |
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218 case Bytecodes::_fast_lputfield: |
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219 case Bytecodes::_fast_sputfield: |
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220 { |
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221 // We skip bytecode quickening for putfield instructions when |
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222 // the put_code written to the constant pool cache is zero. |
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223 // This is required so that every execution of this instruction |
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224 // calls out to InterpreterRuntime::resolve_get_put to do |
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225 // additional, required work. |
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226 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range"); |
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227 assert(load_bc_into_bc_reg, "we use bc_reg as temp"); |
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228 __ get_cache_and_index_and_bytecode_at_bcp(bc_reg, temp_reg, temp_reg, byte_no, 1); |
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229 __ movl(bc_reg, bc); |
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230 __ cmpl(temp_reg, (int) 0); |
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231 __ jcc(Assembler::zero, L_patch_done); // don't patch |
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232 } |
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233 break; |
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234 default: |
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235 assert(byte_no == -1, "sanity"); |
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236 // the pair bytecodes have already done the load. |
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237 if (load_bc_into_bc_reg) { |
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238 __ movl(bc_reg, bc); |
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239 } |
304 | 240 } |
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241 |
0 | 242 if (JvmtiExport::can_post_breakpoint()) { |
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243 Label L_fast_patch; |
0 | 244 // if a breakpoint is present we can't rewrite the stream directly |
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245 __ movzbl(temp_reg, at_bcp(0)); |
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246 __ cmpl(temp_reg, Bytecodes::_breakpoint); |
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247 __ jcc(Assembler::notEqual, L_fast_patch); |
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248 __ get_method(temp_reg); |
0 | 249 // Let breakpoint table handling rewrite to quicker bytecode |
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250 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), temp_reg, rsi, bc_reg); |
0 | 251 #ifndef ASSERT |
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252 __ jmpb(L_patch_done); |
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253 #else |
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254 __ jmp(L_patch_done); |
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255 #endif |
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256 __ bind(L_fast_patch); |
0 | 257 } |
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258 |
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259 #ifdef ASSERT |
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260 Label L_okay; |
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261 __ load_unsigned_byte(temp_reg, at_bcp(0)); |
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262 __ cmpl(temp_reg, (int)Bytecodes::java_code(bc)); |
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263 __ jccb(Assembler::equal, L_okay); |
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264 __ cmpl(temp_reg, bc_reg); |
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265 __ jcc(Assembler::equal, L_okay); |
0 | 266 __ stop("patching the wrong bytecode"); |
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267 __ bind(L_okay); |
0 | 268 #endif |
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269 |
0 | 270 // patch bytecode |
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271 __ movb(at_bcp(0), bc_reg); |
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272 __ bind(L_patch_done); |
0 | 273 } |
274 | |
275 //---------------------------------------------------------------------------------------------------- | |
276 // Individual instructions | |
277 | |
278 void TemplateTable::nop() { | |
279 transition(vtos, vtos); | |
280 // nothing to do | |
281 } | |
282 | |
283 void TemplateTable::shouldnotreachhere() { | |
284 transition(vtos, vtos); | |
285 __ stop("shouldnotreachhere bytecode"); | |
286 } | |
287 | |
288 | |
289 | |
290 void TemplateTable::aconst_null() { | |
291 transition(vtos, atos); | |
304 | 292 __ xorptr(rax, rax); |
0 | 293 } |
294 | |
295 | |
296 void TemplateTable::iconst(int value) { | |
297 transition(vtos, itos); | |
298 if (value == 0) { | |
304 | 299 __ xorptr(rax, rax); |
0 | 300 } else { |
304 | 301 __ movptr(rax, value); |
0 | 302 } |
303 } | |
304 | |
305 | |
306 void TemplateTable::lconst(int value) { | |
307 transition(vtos, ltos); | |
308 if (value == 0) { | |
304 | 309 __ xorptr(rax, rax); |
0 | 310 } else { |
304 | 311 __ movptr(rax, value); |
0 | 312 } |
313 assert(value >= 0, "check this code"); | |
304 | 314 __ xorptr(rdx, rdx); |
0 | 315 } |
316 | |
317 | |
318 void TemplateTable::fconst(int value) { | |
319 transition(vtos, ftos); | |
320 if (value == 0) { __ fldz(); | |
321 } else if (value == 1) { __ fld1(); | |
322 } else if (value == 2) { __ fld1(); __ fld1(); __ faddp(); // should do a better solution here | |
323 } else { ShouldNotReachHere(); | |
324 } | |
325 } | |
326 | |
327 | |
328 void TemplateTable::dconst(int value) { | |
329 transition(vtos, dtos); | |
330 if (value == 0) { __ fldz(); | |
331 } else if (value == 1) { __ fld1(); | |
332 } else { ShouldNotReachHere(); | |
333 } | |
334 } | |
335 | |
336 | |
337 void TemplateTable::bipush() { | |
338 transition(vtos, itos); | |
339 __ load_signed_byte(rax, at_bcp(1)); | |
340 } | |
341 | |
342 | |
343 void TemplateTable::sipush() { | |
344 transition(vtos, itos); | |
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345 __ load_unsigned_short(rax, at_bcp(1)); |
304 | 346 __ bswapl(rax); |
0 | 347 __ sarl(rax, 16); |
348 } | |
349 | |
350 void TemplateTable::ldc(bool wide) { | |
351 transition(vtos, vtos); | |
352 Label call_ldc, notFloat, notClass, Done; | |
353 | |
354 if (wide) { | |
355 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
356 } else { | |
357 __ load_unsigned_byte(rbx, at_bcp(1)); | |
358 } | |
359 __ get_cpool_and_tags(rcx, rax); | |
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360 const int base_offset = ConstantPool::header_size() * wordSize; |
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361 const int tags_offset = Array<u1>::base_offset_in_bytes(); |
0 | 362 |
363 // get type | |
304 | 364 __ xorptr(rdx, rdx); |
0 | 365 __ movb(rdx, Address(rax, rbx, Address::times_1, tags_offset)); |
366 | |
367 // unresolved class - get the resolved class | |
368 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClass); | |
369 __ jccb(Assembler::equal, call_ldc); | |
370 | |
371 // unresolved class in error (resolution failed) - call into runtime | |
372 // so that the same error from first resolution attempt is thrown. | |
373 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClassInError); | |
374 __ jccb(Assembler::equal, call_ldc); | |
375 | |
376 // resolved class - need to call vm to get java mirror of the class | |
377 __ cmpl(rdx, JVM_CONSTANT_Class); | |
378 __ jcc(Assembler::notEqual, notClass); | |
379 | |
380 __ bind(call_ldc); | |
381 __ movl(rcx, wide); | |
382 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), rcx); | |
383 __ push(atos); | |
384 __ jmp(Done); | |
385 | |
386 __ bind(notClass); | |
387 __ cmpl(rdx, JVM_CONSTANT_Float); | |
388 __ jccb(Assembler::notEqual, notFloat); | |
389 // ftos | |
304 | 390 __ fld_s( Address(rcx, rbx, Address::times_ptr, base_offset)); |
0 | 391 __ push(ftos); |
392 __ jmp(Done); | |
393 | |
394 __ bind(notFloat); | |
395 #ifdef ASSERT | |
396 { Label L; | |
397 __ cmpl(rdx, JVM_CONSTANT_Integer); | |
398 __ jcc(Assembler::equal, L); | |
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399 // String and Object are rewritten to fast_aldc |
0 | 400 __ stop("unexpected tag type in ldc"); |
401 __ bind(L); | |
402 } | |
403 #endif | |
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404 // itos JVM_CONSTANT_Integer only |
304 | 405 __ movl(rax, Address(rcx, rbx, Address::times_ptr, base_offset)); |
0 | 406 __ push(itos); |
407 __ bind(Done); | |
408 } | |
409 | |
1602 | 410 // Fast path for caching oop constants. |
411 void TemplateTable::fast_aldc(bool wide) { | |
412 transition(vtos, atos); | |
413 | |
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414 Register result = rax; |
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415 Register tmp = rdx; |
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416 int index_size = wide ? sizeof(u2) : sizeof(u1); |
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417 |
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418 Label resolved; |
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419 |
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420 // We are resolved if the resolved reference cache entry contains a |
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421 // non-null object (String, MethodType, etc.) |
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422 assert_different_registers(result, tmp); |
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423 __ get_cache_index_at_bcp(tmp, 1, index_size); |
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424 __ load_resolved_reference_at_index(result, tmp); |
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425 __ testl(result, result); |
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426 __ jcc(Assembler::notZero, resolved); |
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427 |
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428 address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); |
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429 |
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430 // first time invocation - must resolve first |
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431 __ movl(tmp, (int)bytecode()); |
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432 __ call_VM(result, entry, tmp); |
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433 |
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434 __ bind(resolved); |
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435 |
1602 | 436 if (VerifyOops) { |
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437 __ verify_oop(result); |
1602 | 438 } |
439 } | |
440 | |
0 | 441 void TemplateTable::ldc2_w() { |
442 transition(vtos, vtos); | |
443 Label Long, Done; | |
444 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
445 | |
446 __ get_cpool_and_tags(rcx, rax); | |
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447 const int base_offset = ConstantPool::header_size() * wordSize; |
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448 const int tags_offset = Array<u1>::base_offset_in_bytes(); |
0 | 449 |
450 // get type | |
451 __ cmpb(Address(rax, rbx, Address::times_1, tags_offset), JVM_CONSTANT_Double); | |
452 __ jccb(Assembler::notEqual, Long); | |
453 // dtos | |
304 | 454 __ fld_d( Address(rcx, rbx, Address::times_ptr, base_offset)); |
0 | 455 __ push(dtos); |
456 __ jmpb(Done); | |
457 | |
458 __ bind(Long); | |
459 // ltos | |
304 | 460 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, base_offset + 0 * wordSize)); |
461 NOT_LP64(__ movptr(rdx, Address(rcx, rbx, Address::times_ptr, base_offset + 1 * wordSize))); | |
0 | 462 |
463 __ push(ltos); | |
464 | |
465 __ bind(Done); | |
466 } | |
467 | |
468 | |
469 void TemplateTable::locals_index(Register reg, int offset) { | |
470 __ load_unsigned_byte(reg, at_bcp(offset)); | |
304 | 471 __ negptr(reg); |
0 | 472 } |
473 | |
474 | |
475 void TemplateTable::iload() { | |
476 transition(vtos, itos); | |
477 if (RewriteFrequentPairs) { | |
478 Label rewrite, done; | |
479 | |
480 // get next byte | |
481 __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_iload))); | |
482 // if _iload, wait to rewrite to iload2. We only want to rewrite the | |
483 // last two iloads in a pair. Comparing against fast_iload means that | |
484 // the next bytecode is neither an iload or a caload, and therefore | |
485 // an iload pair. | |
486 __ cmpl(rbx, Bytecodes::_iload); | |
487 __ jcc(Assembler::equal, done); | |
488 | |
489 __ cmpl(rbx, Bytecodes::_fast_iload); | |
490 __ movl(rcx, Bytecodes::_fast_iload2); | |
491 __ jccb(Assembler::equal, rewrite); | |
492 | |
493 // if _caload, rewrite to fast_icaload | |
494 __ cmpl(rbx, Bytecodes::_caload); | |
495 __ movl(rcx, Bytecodes::_fast_icaload); | |
496 __ jccb(Assembler::equal, rewrite); | |
497 | |
498 // rewrite so iload doesn't check again. | |
499 __ movl(rcx, Bytecodes::_fast_iload); | |
500 | |
501 // rewrite | |
502 // rcx: fast bytecode | |
503 __ bind(rewrite); | |
504 patch_bytecode(Bytecodes::_iload, rcx, rbx, false); | |
505 __ bind(done); | |
506 } | |
507 | |
508 // Get the local value into tos | |
509 locals_index(rbx); | |
510 __ movl(rax, iaddress(rbx)); | |
511 } | |
512 | |
513 | |
514 void TemplateTable::fast_iload2() { | |
515 transition(vtos, itos); | |
516 locals_index(rbx); | |
517 __ movl(rax, iaddress(rbx)); | |
518 __ push(itos); | |
519 locals_index(rbx, 3); | |
520 __ movl(rax, iaddress(rbx)); | |
521 } | |
522 | |
523 void TemplateTable::fast_iload() { | |
524 transition(vtos, itos); | |
525 locals_index(rbx); | |
526 __ movl(rax, iaddress(rbx)); | |
527 } | |
528 | |
529 | |
530 void TemplateTable::lload() { | |
531 transition(vtos, ltos); | |
532 locals_index(rbx); | |
304 | 533 __ movptr(rax, laddress(rbx)); |
534 NOT_LP64(__ movl(rdx, haddress(rbx))); | |
0 | 535 } |
536 | |
537 | |
538 void TemplateTable::fload() { | |
539 transition(vtos, ftos); | |
540 locals_index(rbx); | |
541 __ fld_s(faddress(rbx)); | |
542 } | |
543 | |
544 | |
545 void TemplateTable::dload() { | |
546 transition(vtos, dtos); | |
547 locals_index(rbx); | |
1506 | 548 __ fld_d(daddress(rbx)); |
0 | 549 } |
550 | |
551 | |
552 void TemplateTable::aload() { | |
553 transition(vtos, atos); | |
554 locals_index(rbx); | |
304 | 555 __ movptr(rax, aaddress(rbx)); |
0 | 556 } |
557 | |
558 | |
559 void TemplateTable::locals_index_wide(Register reg) { | |
560 __ movl(reg, at_bcp(2)); | |
304 | 561 __ bswapl(reg); |
0 | 562 __ shrl(reg, 16); |
304 | 563 __ negptr(reg); |
0 | 564 } |
565 | |
566 | |
567 void TemplateTable::wide_iload() { | |
568 transition(vtos, itos); | |
569 locals_index_wide(rbx); | |
570 __ movl(rax, iaddress(rbx)); | |
571 } | |
572 | |
573 | |
574 void TemplateTable::wide_lload() { | |
575 transition(vtos, ltos); | |
576 locals_index_wide(rbx); | |
304 | 577 __ movptr(rax, laddress(rbx)); |
578 NOT_LP64(__ movl(rdx, haddress(rbx))); | |
0 | 579 } |
580 | |
581 | |
582 void TemplateTable::wide_fload() { | |
583 transition(vtos, ftos); | |
584 locals_index_wide(rbx); | |
585 __ fld_s(faddress(rbx)); | |
586 } | |
587 | |
588 | |
589 void TemplateTable::wide_dload() { | |
590 transition(vtos, dtos); | |
591 locals_index_wide(rbx); | |
1506 | 592 __ fld_d(daddress(rbx)); |
0 | 593 } |
594 | |
595 | |
596 void TemplateTable::wide_aload() { | |
597 transition(vtos, atos); | |
598 locals_index_wide(rbx); | |
304 | 599 __ movptr(rax, aaddress(rbx)); |
0 | 600 } |
601 | |
602 void TemplateTable::index_check(Register array, Register index) { | |
603 // Pop ptr into array | |
604 __ pop_ptr(array); | |
605 index_check_without_pop(array, index); | |
606 } | |
607 | |
608 void TemplateTable::index_check_without_pop(Register array, Register index) { | |
609 // destroys rbx, | |
610 // check array | |
611 __ null_check(array, arrayOopDesc::length_offset_in_bytes()); | |
304 | 612 LP64_ONLY(__ movslq(index, index)); |
0 | 613 // check index |
614 __ cmpl(index, Address(array, arrayOopDesc::length_offset_in_bytes())); | |
615 if (index != rbx) { | |
616 // ??? convention: move aberrant index into rbx, for exception message | |
617 assert(rbx != array, "different registers"); | |
304 | 618 __ mov(rbx, index); |
0 | 619 } |
620 __ jump_cc(Assembler::aboveEqual, | |
621 ExternalAddress(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry)); | |
622 } | |
623 | |
624 | |
625 void TemplateTable::iaload() { | |
626 transition(itos, itos); | |
627 // rdx: array | |
628 index_check(rdx, rax); // kills rbx, | |
629 // rax,: index | |
630 __ movl(rax, Address(rdx, rax, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_INT))); | |
631 } | |
632 | |
633 | |
634 void TemplateTable::laload() { | |
635 transition(itos, ltos); | |
636 // rax,: index | |
637 // rdx: array | |
638 index_check(rdx, rax); | |
304 | 639 __ mov(rbx, rax); |
0 | 640 // rbx,: index |
304 | 641 __ movptr(rax, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize)); |
642 NOT_LP64(__ movl(rdx, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize))); | |
0 | 643 } |
644 | |
645 | |
646 void TemplateTable::faload() { | |
647 transition(itos, ftos); | |
648 // rdx: array | |
649 index_check(rdx, rax); // kills rbx, | |
650 // rax,: index | |
651 __ fld_s(Address(rdx, rax, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT))); | |
652 } | |
653 | |
654 | |
655 void TemplateTable::daload() { | |
656 transition(itos, dtos); | |
657 // rdx: array | |
658 index_check(rdx, rax); // kills rbx, | |
659 // rax,: index | |
660 __ fld_d(Address(rdx, rax, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); | |
661 } | |
662 | |
663 | |
664 void TemplateTable::aaload() { | |
665 transition(itos, atos); | |
666 // rdx: array | |
667 index_check(rdx, rax); // kills rbx, | |
668 // rax,: index | |
304 | 669 __ movptr(rax, Address(rdx, rax, Address::times_ptr, arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
0 | 670 } |
671 | |
672 | |
673 void TemplateTable::baload() { | |
674 transition(itos, itos); | |
675 // rdx: array | |
676 index_check(rdx, rax); // kills rbx, | |
677 // rax,: index | |
678 // can do better code for P5 - fix this at some point | |
679 __ load_signed_byte(rbx, Address(rdx, rax, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE))); | |
304 | 680 __ mov(rax, rbx); |
0 | 681 } |
682 | |
683 | |
684 void TemplateTable::caload() { | |
685 transition(itos, itos); | |
686 // rdx: array | |
687 index_check(rdx, rax); // kills rbx, | |
688 // rax,: index | |
689 // can do better code for P5 - may want to improve this at some point | |
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690 __ load_unsigned_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
304 | 691 __ mov(rax, rbx); |
0 | 692 } |
693 | |
694 // iload followed by caload frequent pair | |
695 void TemplateTable::fast_icaload() { | |
696 transition(vtos, itos); | |
697 // load index out of locals | |
698 locals_index(rbx); | |
699 __ movl(rax, iaddress(rbx)); | |
700 | |
701 // rdx: array | |
702 index_check(rdx, rax); | |
703 // rax,: index | |
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704 __ load_unsigned_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
304 | 705 __ mov(rax, rbx); |
0 | 706 } |
707 | |
708 void TemplateTable::saload() { | |
709 transition(itos, itos); | |
710 // rdx: array | |
711 index_check(rdx, rax); // kills rbx, | |
712 // rax,: index | |
713 // can do better code for P5 - may want to improve this at some point | |
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714 __ load_signed_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_SHORT))); |
304 | 715 __ mov(rax, rbx); |
0 | 716 } |
717 | |
718 | |
719 void TemplateTable::iload(int n) { | |
720 transition(vtos, itos); | |
721 __ movl(rax, iaddress(n)); | |
722 } | |
723 | |
724 | |
725 void TemplateTable::lload(int n) { | |
726 transition(vtos, ltos); | |
304 | 727 __ movptr(rax, laddress(n)); |
728 NOT_LP64(__ movptr(rdx, haddress(n))); | |
0 | 729 } |
730 | |
731 | |
732 void TemplateTable::fload(int n) { | |
733 transition(vtos, ftos); | |
734 __ fld_s(faddress(n)); | |
735 } | |
736 | |
737 | |
738 void TemplateTable::dload(int n) { | |
739 transition(vtos, dtos); | |
1506 | 740 __ fld_d(daddress(n)); |
0 | 741 } |
742 | |
743 | |
744 void TemplateTable::aload(int n) { | |
745 transition(vtos, atos); | |
304 | 746 __ movptr(rax, aaddress(n)); |
0 | 747 } |
748 | |
749 | |
750 void TemplateTable::aload_0() { | |
751 transition(vtos, atos); | |
752 // According to bytecode histograms, the pairs: | |
753 // | |
754 // _aload_0, _fast_igetfield | |
755 // _aload_0, _fast_agetfield | |
756 // _aload_0, _fast_fgetfield | |
757 // | |
758 // occur frequently. If RewriteFrequentPairs is set, the (slow) _aload_0 | |
759 // bytecode checks if the next bytecode is either _fast_igetfield, | |
760 // _fast_agetfield or _fast_fgetfield and then rewrites the | |
761 // current bytecode into a pair bytecode; otherwise it rewrites the current | |
762 // bytecode into _fast_aload_0 that doesn't do the pair check anymore. | |
763 // | |
764 // Note: If the next bytecode is _getfield, the rewrite must be delayed, | |
765 // otherwise we may miss an opportunity for a pair. | |
766 // | |
767 // Also rewrite frequent pairs | |
768 // aload_0, aload_1 | |
769 // aload_0, iload_1 | |
770 // These bytecodes with a small amount of code are most profitable to rewrite | |
771 if (RewriteFrequentPairs) { | |
772 Label rewrite, done; | |
773 // get next byte | |
774 __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_aload_0))); | |
775 | |
776 // do actual aload_0 | |
777 aload(0); | |
778 | |
779 // if _getfield then wait with rewrite | |
780 __ cmpl(rbx, Bytecodes::_getfield); | |
781 __ jcc(Assembler::equal, done); | |
782 | |
783 // if _igetfield then reqrite to _fast_iaccess_0 | |
784 assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
785 __ cmpl(rbx, Bytecodes::_fast_igetfield); | |
786 __ movl(rcx, Bytecodes::_fast_iaccess_0); | |
787 __ jccb(Assembler::equal, rewrite); | |
788 | |
789 // if _agetfield then reqrite to _fast_aaccess_0 | |
790 assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
791 __ cmpl(rbx, Bytecodes::_fast_agetfield); | |
792 __ movl(rcx, Bytecodes::_fast_aaccess_0); | |
793 __ jccb(Assembler::equal, rewrite); | |
794 | |
795 // if _fgetfield then reqrite to _fast_faccess_0 | |
796 assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
797 __ cmpl(rbx, Bytecodes::_fast_fgetfield); | |
798 __ movl(rcx, Bytecodes::_fast_faccess_0); | |
799 __ jccb(Assembler::equal, rewrite); | |
800 | |
801 // else rewrite to _fast_aload0 | |
802 assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
803 __ movl(rcx, Bytecodes::_fast_aload_0); | |
804 | |
805 // rewrite | |
806 // rcx: fast bytecode | |
807 __ bind(rewrite); | |
808 patch_bytecode(Bytecodes::_aload_0, rcx, rbx, false); | |
809 | |
810 __ bind(done); | |
811 } else { | |
812 aload(0); | |
813 } | |
814 } | |
815 | |
816 void TemplateTable::istore() { | |
817 transition(itos, vtos); | |
818 locals_index(rbx); | |
819 __ movl(iaddress(rbx), rax); | |
820 } | |
821 | |
822 | |
823 void TemplateTable::lstore() { | |
824 transition(ltos, vtos); | |
825 locals_index(rbx); | |
304 | 826 __ movptr(laddress(rbx), rax); |
827 NOT_LP64(__ movptr(haddress(rbx), rdx)); | |
0 | 828 } |
829 | |
830 | |
831 void TemplateTable::fstore() { | |
832 transition(ftos, vtos); | |
833 locals_index(rbx); | |
834 __ fstp_s(faddress(rbx)); | |
835 } | |
836 | |
837 | |
838 void TemplateTable::dstore() { | |
839 transition(dtos, vtos); | |
840 locals_index(rbx); | |
1506 | 841 __ fstp_d(daddress(rbx)); |
0 | 842 } |
843 | |
844 | |
845 void TemplateTable::astore() { | |
846 transition(vtos, vtos); | |
1506 | 847 __ pop_ptr(rax); |
0 | 848 locals_index(rbx); |
304 | 849 __ movptr(aaddress(rbx), rax); |
0 | 850 } |
851 | |
852 | |
853 void TemplateTable::wide_istore() { | |
854 transition(vtos, vtos); | |
855 __ pop_i(rax); | |
856 locals_index_wide(rbx); | |
857 __ movl(iaddress(rbx), rax); | |
858 } | |
859 | |
860 | |
861 void TemplateTable::wide_lstore() { | |
862 transition(vtos, vtos); | |
863 __ pop_l(rax, rdx); | |
864 locals_index_wide(rbx); | |
304 | 865 __ movptr(laddress(rbx), rax); |
866 NOT_LP64(__ movl(haddress(rbx), rdx)); | |
0 | 867 } |
868 | |
869 | |
870 void TemplateTable::wide_fstore() { | |
871 wide_istore(); | |
872 } | |
873 | |
874 | |
875 void TemplateTable::wide_dstore() { | |
876 wide_lstore(); | |
877 } | |
878 | |
879 | |
880 void TemplateTable::wide_astore() { | |
881 transition(vtos, vtos); | |
1506 | 882 __ pop_ptr(rax); |
0 | 883 locals_index_wide(rbx); |
304 | 884 __ movptr(aaddress(rbx), rax); |
0 | 885 } |
886 | |
887 | |
888 void TemplateTable::iastore() { | |
889 transition(itos, vtos); | |
890 __ pop_i(rbx); | |
891 // rax,: value | |
892 // rdx: array | |
893 index_check(rdx, rbx); // prefer index in rbx, | |
894 // rbx,: index | |
895 __ movl(Address(rdx, rbx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_INT)), rax); | |
896 } | |
897 | |
898 | |
899 void TemplateTable::lastore() { | |
900 transition(ltos, vtos); | |
901 __ pop_i(rbx); | |
902 // rax,: low(value) | |
903 // rcx: array | |
904 // rdx: high(value) | |
905 index_check(rcx, rbx); // prefer index in rbx, | |
906 // rbx,: index | |
304 | 907 __ movptr(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize), rax); |
908 NOT_LP64(__ movl(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize), rdx)); | |
0 | 909 } |
910 | |
911 | |
912 void TemplateTable::fastore() { | |
913 transition(ftos, vtos); | |
914 __ pop_i(rbx); | |
915 // rdx: array | |
916 // st0: value | |
917 index_check(rdx, rbx); // prefer index in rbx, | |
918 // rbx,: index | |
919 __ fstp_s(Address(rdx, rbx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT))); | |
920 } | |
921 | |
922 | |
923 void TemplateTable::dastore() { | |
924 transition(dtos, vtos); | |
925 __ pop_i(rbx); | |
926 // rdx: array | |
927 // st0: value | |
928 index_check(rdx, rbx); // prefer index in rbx, | |
929 // rbx,: index | |
930 __ fstp_d(Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); | |
931 } | |
932 | |
933 | |
934 void TemplateTable::aastore() { | |
935 Label is_null, ok_is_subtype, done; | |
936 transition(vtos, vtos); | |
937 // stack: ..., array, index, value | |
304 | 938 __ movptr(rax, at_tos()); // Value |
0 | 939 __ movl(rcx, at_tos_p1()); // Index |
304 | 940 __ movptr(rdx, at_tos_p2()); // Array |
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941 |
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942 Address element_address(rdx, rcx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_OBJECT)); |
0 | 943 index_check_without_pop(rdx, rcx); // kills rbx, |
944 // do array store check - check for NULL value first | |
304 | 945 __ testptr(rax, rax); |
0 | 946 __ jcc(Assembler::zero, is_null); |
947 | |
948 // Move subklass into EBX | |
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949 __ load_klass(rbx, rax); |
0 | 950 // Move superklass into EAX |
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951 __ load_klass(rax, rdx); |
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952 __ movptr(rax, Address(rax, ObjArrayKlass::element_klass_offset())); |
304 | 953 // Compress array+index*wordSize+12 into a single register. Frees ECX. |
362 | 954 __ lea(rdx, element_address); |
0 | 955 |
956 // Generate subtype check. Blows ECX. Resets EDI to locals. | |
957 // Superklass in EAX. Subklass in EBX. | |
958 __ gen_subtype_check( rbx, ok_is_subtype ); | |
959 | |
960 // Come here on failure | |
961 // object is at TOS | |
962 __ jump(ExternalAddress(Interpreter::_throw_ArrayStoreException_entry)); | |
963 | |
964 // Come here on success | |
965 __ bind(ok_is_subtype); | |
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966 |
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967 // Get the value to store |
362 | 968 __ movptr(rax, at_rsp()); |
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969 // and store it with appropriate barrier |
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970 do_oop_store(_masm, Address(rdx, 0), rax, _bs->kind(), true); |
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971 |
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972 __ jmp(done); |
0 | 973 |
974 // Have a NULL in EAX, EDX=array, ECX=index. Store NULL at ary[idx] | |
975 __ bind(is_null); | |
976 __ profile_null_seen(rbx); | |
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977 |
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978 // Store NULL, (noreg means NULL to do_oop_store) |
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979 do_oop_store(_masm, element_address, noreg, _bs->kind(), true); |
0 | 980 |
981 // Pop stack arguments | |
982 __ bind(done); | |
1506 | 983 __ addptr(rsp, 3 * Interpreter::stackElementSize); |
0 | 984 } |
985 | |
986 | |
987 void TemplateTable::bastore() { | |
988 transition(itos, vtos); | |
989 __ pop_i(rbx); | |
990 // rax,: value | |
991 // rdx: array | |
992 index_check(rdx, rbx); // prefer index in rbx, | |
993 // rbx,: index | |
994 __ movb(Address(rdx, rbx, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE)), rax); | |
995 } | |
996 | |
997 | |
998 void TemplateTable::castore() { | |
999 transition(itos, vtos); | |
1000 __ pop_i(rbx); | |
1001 // rax,: value | |
1002 // rdx: array | |
1003 index_check(rdx, rbx); // prefer index in rbx, | |
1004 // rbx,: index | |
1005 __ movw(Address(rdx, rbx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)), rax); | |
1006 } | |
1007 | |
1008 | |
1009 void TemplateTable::sastore() { | |
1010 castore(); | |
1011 } | |
1012 | |
1013 | |
1014 void TemplateTable::istore(int n) { | |
1015 transition(itos, vtos); | |
1016 __ movl(iaddress(n), rax); | |
1017 } | |
1018 | |
1019 | |
1020 void TemplateTable::lstore(int n) { | |
1021 transition(ltos, vtos); | |
304 | 1022 __ movptr(laddress(n), rax); |
1023 NOT_LP64(__ movptr(haddress(n), rdx)); | |
0 | 1024 } |
1025 | |
1026 | |
1027 void TemplateTable::fstore(int n) { | |
1028 transition(ftos, vtos); | |
1029 __ fstp_s(faddress(n)); | |
1030 } | |
1031 | |
1032 | |
1033 void TemplateTable::dstore(int n) { | |
1034 transition(dtos, vtos); | |
1506 | 1035 __ fstp_d(daddress(n)); |
0 | 1036 } |
1037 | |
1038 | |
1039 void TemplateTable::astore(int n) { | |
1040 transition(vtos, vtos); | |
1506 | 1041 __ pop_ptr(rax); |
304 | 1042 __ movptr(aaddress(n), rax); |
0 | 1043 } |
1044 | |
1045 | |
1046 void TemplateTable::pop() { | |
1047 transition(vtos, vtos); | |
1506 | 1048 __ addptr(rsp, Interpreter::stackElementSize); |
0 | 1049 } |
1050 | |
1051 | |
1052 void TemplateTable::pop2() { | |
1053 transition(vtos, vtos); | |
1506 | 1054 __ addptr(rsp, 2*Interpreter::stackElementSize); |
0 | 1055 } |
1056 | |
1057 | |
1058 void TemplateTable::dup() { | |
1059 transition(vtos, vtos); | |
1060 // stack: ..., a | |
1506 | 1061 __ load_ptr(0, rax); |
1062 __ push_ptr(rax); | |
0 | 1063 // stack: ..., a, a |
1064 } | |
1065 | |
1066 | |
1067 void TemplateTable::dup_x1() { | |
1068 transition(vtos, vtos); | |
1069 // stack: ..., a, b | |
1506 | 1070 __ load_ptr( 0, rax); // load b |
1071 __ load_ptr( 1, rcx); // load a | |
1072 __ store_ptr(1, rax); // store b | |
1073 __ store_ptr(0, rcx); // store a | |
1074 __ push_ptr(rax); // push b | |
0 | 1075 // stack: ..., b, a, b |
1076 } | |
1077 | |
1078 | |
1079 void TemplateTable::dup_x2() { | |
1080 transition(vtos, vtos); | |
1081 // stack: ..., a, b, c | |
1506 | 1082 __ load_ptr( 0, rax); // load c |
1083 __ load_ptr( 2, rcx); // load a | |
1084 __ store_ptr(2, rax); // store c in a | |
1085 __ push_ptr(rax); // push c | |
0 | 1086 // stack: ..., c, b, c, c |
1506 | 1087 __ load_ptr( 2, rax); // load b |
1088 __ store_ptr(2, rcx); // store a in b | |
0 | 1089 // stack: ..., c, a, c, c |
1506 | 1090 __ store_ptr(1, rax); // store b in c |
0 | 1091 // stack: ..., c, a, b, c |
1092 } | |
1093 | |
1094 | |
1095 void TemplateTable::dup2() { | |
1096 transition(vtos, vtos); | |
1097 // stack: ..., a, b | |
1506 | 1098 __ load_ptr(1, rax); // load a |
1099 __ push_ptr(rax); // push a | |
1100 __ load_ptr(1, rax); // load b | |
1101 __ push_ptr(rax); // push b | |
0 | 1102 // stack: ..., a, b, a, b |
1103 } | |
1104 | |
1105 | |
1106 void TemplateTable::dup2_x1() { | |
1107 transition(vtos, vtos); | |
1108 // stack: ..., a, b, c | |
1506 | 1109 __ load_ptr( 0, rcx); // load c |
1110 __ load_ptr( 1, rax); // load b | |
1111 __ push_ptr(rax); // push b | |
1112 __ push_ptr(rcx); // push c | |
0 | 1113 // stack: ..., a, b, c, b, c |
1506 | 1114 __ store_ptr(3, rcx); // store c in b |
0 | 1115 // stack: ..., a, c, c, b, c |
1506 | 1116 __ load_ptr( 4, rcx); // load a |
1117 __ store_ptr(2, rcx); // store a in 2nd c | |
0 | 1118 // stack: ..., a, c, a, b, c |
1506 | 1119 __ store_ptr(4, rax); // store b in a |
0 | 1120 // stack: ..., b, c, a, b, c |
1121 // stack: ..., b, c, a, b, c | |
1122 } | |
1123 | |
1124 | |
1125 void TemplateTable::dup2_x2() { | |
1126 transition(vtos, vtos); | |
1127 // stack: ..., a, b, c, d | |
1506 | 1128 __ load_ptr( 0, rcx); // load d |
1129 __ load_ptr( 1, rax); // load c | |
1130 __ push_ptr(rax); // push c | |
1131 __ push_ptr(rcx); // push d | |
0 | 1132 // stack: ..., a, b, c, d, c, d |
1506 | 1133 __ load_ptr( 4, rax); // load b |
1134 __ store_ptr(2, rax); // store b in d | |
1135 __ store_ptr(4, rcx); // store d in b | |
0 | 1136 // stack: ..., a, d, c, b, c, d |
1506 | 1137 __ load_ptr( 5, rcx); // load a |
1138 __ load_ptr( 3, rax); // load c | |
1139 __ store_ptr(3, rcx); // store a in c | |
1140 __ store_ptr(5, rax); // store c in a | |
0 | 1141 // stack: ..., c, d, a, b, c, d |
1142 // stack: ..., c, d, a, b, c, d | |
1143 } | |
1144 | |
1145 | |
1146 void TemplateTable::swap() { | |
1147 transition(vtos, vtos); | |
1148 // stack: ..., a, b | |
1506 | 1149 __ load_ptr( 1, rcx); // load a |
1150 __ load_ptr( 0, rax); // load b | |
1151 __ store_ptr(0, rcx); // store a in b | |
1152 __ store_ptr(1, rax); // store b in a | |
0 | 1153 // stack: ..., b, a |
1154 } | |
1155 | |
1156 | |
1157 void TemplateTable::iop2(Operation op) { | |
1158 transition(itos, itos); | |
1159 switch (op) { | |
1506 | 1160 case add : __ pop_i(rdx); __ addl (rax, rdx); break; |
304 | 1161 case sub : __ mov(rdx, rax); __ pop_i(rax); __ subl (rax, rdx); break; |
1506 | 1162 case mul : __ pop_i(rdx); __ imull(rax, rdx); break; |
1163 case _and : __ pop_i(rdx); __ andl (rax, rdx); break; | |
1164 case _or : __ pop_i(rdx); __ orl (rax, rdx); break; | |
1165 case _xor : __ pop_i(rdx); __ xorl (rax, rdx); break; | |
304 | 1166 case shl : __ mov(rcx, rax); __ pop_i(rax); __ shll (rax); break; // implicit masking of lower 5 bits by Intel shift instr. |
1167 case shr : __ mov(rcx, rax); __ pop_i(rax); __ sarl (rax); break; // implicit masking of lower 5 bits by Intel shift instr. | |
1168 case ushr : __ mov(rcx, rax); __ pop_i(rax); __ shrl (rax); break; // implicit masking of lower 5 bits by Intel shift instr. | |
0 | 1169 default : ShouldNotReachHere(); |
1170 } | |
1171 } | |
1172 | |
1173 | |
1174 void TemplateTable::lop2(Operation op) { | |
1175 transition(ltos, ltos); | |
1176 __ pop_l(rbx, rcx); | |
1177 switch (op) { | |
1506 | 1178 case add : __ addl(rax, rbx); __ adcl(rdx, rcx); break; |
1179 case sub : __ subl(rbx, rax); __ sbbl(rcx, rdx); | |
1180 __ mov (rax, rbx); __ mov (rdx, rcx); break; | |
1181 case _and : __ andl(rax, rbx); __ andl(rdx, rcx); break; | |
1182 case _or : __ orl (rax, rbx); __ orl (rdx, rcx); break; | |
1183 case _xor : __ xorl(rax, rbx); __ xorl(rdx, rcx); break; | |
1184 default : ShouldNotReachHere(); | |
0 | 1185 } |
1186 } | |
1187 | |
1188 | |
1189 void TemplateTable::idiv() { | |
1190 transition(itos, itos); | |
304 | 1191 __ mov(rcx, rax); |
0 | 1192 __ pop_i(rax); |
1193 // Note: could xor rax, and rcx and compare with (-1 ^ min_int). If | |
1194 // they are not equal, one could do a normal division (no correction | |
1195 // needed), which may speed up this implementation for the common case. | |
1196 // (see also JVM spec., p.243 & p.271) | |
1197 __ corrected_idivl(rcx); | |
1198 } | |
1199 | |
1200 | |
1201 void TemplateTable::irem() { | |
1202 transition(itos, itos); | |
304 | 1203 __ mov(rcx, rax); |
0 | 1204 __ pop_i(rax); |
1205 // Note: could xor rax, and rcx and compare with (-1 ^ min_int). If | |
1206 // they are not equal, one could do a normal division (no correction | |
1207 // needed), which may speed up this implementation for the common case. | |
1208 // (see also JVM spec., p.243 & p.271) | |
1209 __ corrected_idivl(rcx); | |
304 | 1210 __ mov(rax, rdx); |
0 | 1211 } |
1212 | |
1213 | |
1214 void TemplateTable::lmul() { | |
1215 transition(ltos, ltos); | |
1216 __ pop_l(rbx, rcx); | |
304 | 1217 __ push(rcx); __ push(rbx); |
1218 __ push(rdx); __ push(rax); | |
0 | 1219 __ lmul(2 * wordSize, 0); |
304 | 1220 __ addptr(rsp, 4 * wordSize); // take off temporaries |
0 | 1221 } |
1222 | |
1223 | |
1224 void TemplateTable::ldiv() { | |
1225 transition(ltos, ltos); | |
1226 __ pop_l(rbx, rcx); | |
304 | 1227 __ push(rcx); __ push(rbx); |
1228 __ push(rdx); __ push(rax); | |
0 | 1229 // check if y = 0 |
1230 __ orl(rax, rdx); | |
1231 __ jump_cc(Assembler::zero, | |
1232 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1233 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::ldiv)); | |
304 | 1234 __ addptr(rsp, 4 * wordSize); // take off temporaries |
0 | 1235 } |
1236 | |
1237 | |
1238 void TemplateTable::lrem() { | |
1239 transition(ltos, ltos); | |
1240 __ pop_l(rbx, rcx); | |
304 | 1241 __ push(rcx); __ push(rbx); |
1242 __ push(rdx); __ push(rax); | |
0 | 1243 // check if y = 0 |
1244 __ orl(rax, rdx); | |
1245 __ jump_cc(Assembler::zero, | |
1246 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1247 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::lrem)); | |
304 | 1248 __ addptr(rsp, 4 * wordSize); |
0 | 1249 } |
1250 | |
1251 | |
1252 void TemplateTable::lshl() { | |
1253 transition(itos, ltos); | |
1254 __ movl(rcx, rax); // get shift count | |
1255 __ pop_l(rax, rdx); // get shift value | |
1256 __ lshl(rdx, rax); | |
1257 } | |
1258 | |
1259 | |
1260 void TemplateTable::lshr() { | |
1261 transition(itos, ltos); | |
304 | 1262 __ mov(rcx, rax); // get shift count |
0 | 1263 __ pop_l(rax, rdx); // get shift value |
1264 __ lshr(rdx, rax, true); | |
1265 } | |
1266 | |
1267 | |
1268 void TemplateTable::lushr() { | |
1269 transition(itos, ltos); | |
304 | 1270 __ mov(rcx, rax); // get shift count |
0 | 1271 __ pop_l(rax, rdx); // get shift value |
1272 __ lshr(rdx, rax); | |
1273 } | |
1274 | |
1275 | |
1276 void TemplateTable::fop2(Operation op) { | |
1277 transition(ftos, ftos); | |
1278 switch (op) { | |
1279 case add: __ fadd_s (at_rsp()); break; | |
1280 case sub: __ fsubr_s(at_rsp()); break; | |
1281 case mul: __ fmul_s (at_rsp()); break; | |
1282 case div: __ fdivr_s(at_rsp()); break; | |
1283 case rem: __ fld_s (at_rsp()); __ fremr(rax); break; | |
1284 default : ShouldNotReachHere(); | |
1285 } | |
1286 __ f2ieee(); | |
304 | 1287 __ pop(rax); // pop float thing off |
0 | 1288 } |
1289 | |
1290 | |
1291 void TemplateTable::dop2(Operation op) { | |
1292 transition(dtos, dtos); | |
1293 | |
1294 switch (op) { | |
1295 case add: __ fadd_d (at_rsp()); break; | |
1296 case sub: __ fsubr_d(at_rsp()); break; | |
1297 case mul: { | |
1298 Label L_strict; | |
1299 Label L_join; | |
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1300 const Address access_flags (rcx, Method::access_flags_offset()); |
0 | 1301 __ get_method(rcx); |
1302 __ movl(rcx, access_flags); | |
1303 __ testl(rcx, JVM_ACC_STRICT); | |
1304 __ jccb(Assembler::notZero, L_strict); | |
1305 __ fmul_d (at_rsp()); | |
1306 __ jmpb(L_join); | |
1307 __ bind(L_strict); | |
1308 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); | |
1309 __ fmulp(); | |
1310 __ fmul_d (at_rsp()); | |
1311 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); | |
1312 __ fmulp(); | |
1313 __ bind(L_join); | |
1314 break; | |
1315 } | |
1316 case div: { | |
1317 Label L_strict; | |
1318 Label L_join; | |
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1319 const Address access_flags (rcx, Method::access_flags_offset()); |
0 | 1320 __ get_method(rcx); |
1321 __ movl(rcx, access_flags); | |
1322 __ testl(rcx, JVM_ACC_STRICT); | |
1323 __ jccb(Assembler::notZero, L_strict); | |
1324 __ fdivr_d(at_rsp()); | |
1325 __ jmp(L_join); | |
1326 __ bind(L_strict); | |
1327 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); | |
1328 __ fmul_d (at_rsp()); | |
1329 __ fdivrp(); | |
1330 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); | |
1331 __ fmulp(); | |
1332 __ bind(L_join); | |
1333 break; | |
1334 } | |
1335 case rem: __ fld_d (at_rsp()); __ fremr(rax); break; | |
1336 default : ShouldNotReachHere(); | |
1337 } | |
1338 __ d2ieee(); | |
1339 // Pop double precision number from rsp. | |
304 | 1340 __ pop(rax); |
1341 __ pop(rdx); | |
0 | 1342 } |
1343 | |
1344 | |
1345 void TemplateTable::ineg() { | |
1346 transition(itos, itos); | |
1347 __ negl(rax); | |
1348 } | |
1349 | |
1350 | |
1351 void TemplateTable::lneg() { | |
1352 transition(ltos, ltos); | |
1353 __ lneg(rdx, rax); | |
1354 } | |
1355 | |
1356 | |
1357 void TemplateTable::fneg() { | |
1358 transition(ftos, ftos); | |
1359 __ fchs(); | |
1360 } | |
1361 | |
1362 | |
1363 void TemplateTable::dneg() { | |
1364 transition(dtos, dtos); | |
1365 __ fchs(); | |
1366 } | |
1367 | |
1368 | |
1369 void TemplateTable::iinc() { | |
1370 transition(vtos, vtos); | |
1371 __ load_signed_byte(rdx, at_bcp(2)); // get constant | |
1372 locals_index(rbx); | |
1373 __ addl(iaddress(rbx), rdx); | |
1374 } | |
1375 | |
1376 | |
1377 void TemplateTable::wide_iinc() { | |
1378 transition(vtos, vtos); | |
1379 __ movl(rdx, at_bcp(4)); // get constant | |
1380 locals_index_wide(rbx); | |
304 | 1381 __ bswapl(rdx); // swap bytes & sign-extend constant |
0 | 1382 __ sarl(rdx, 16); |
1383 __ addl(iaddress(rbx), rdx); | |
1384 // Note: should probably use only one movl to get both | |
1385 // the index and the constant -> fix this | |
1386 } | |
1387 | |
1388 | |
1389 void TemplateTable::convert() { | |
1390 // Checking | |
1391 #ifdef ASSERT | |
1392 { TosState tos_in = ilgl; | |
1393 TosState tos_out = ilgl; | |
1394 switch (bytecode()) { | |
1395 case Bytecodes::_i2l: // fall through | |
1396 case Bytecodes::_i2f: // fall through | |
1397 case Bytecodes::_i2d: // fall through | |
1398 case Bytecodes::_i2b: // fall through | |
1399 case Bytecodes::_i2c: // fall through | |
1400 case Bytecodes::_i2s: tos_in = itos; break; | |
1401 case Bytecodes::_l2i: // fall through | |
1402 case Bytecodes::_l2f: // fall through | |
1403 case Bytecodes::_l2d: tos_in = ltos; break; | |
1404 case Bytecodes::_f2i: // fall through | |
1405 case Bytecodes::_f2l: // fall through | |
1406 case Bytecodes::_f2d: tos_in = ftos; break; | |
1407 case Bytecodes::_d2i: // fall through | |
1408 case Bytecodes::_d2l: // fall through | |
1409 case Bytecodes::_d2f: tos_in = dtos; break; | |
1410 default : ShouldNotReachHere(); | |
1411 } | |
1412 switch (bytecode()) { | |
1413 case Bytecodes::_l2i: // fall through | |
1414 case Bytecodes::_f2i: // fall through | |
1415 case Bytecodes::_d2i: // fall through | |
1416 case Bytecodes::_i2b: // fall through | |
1417 case Bytecodes::_i2c: // fall through | |
1418 case Bytecodes::_i2s: tos_out = itos; break; | |
1419 case Bytecodes::_i2l: // fall through | |
1420 case Bytecodes::_f2l: // fall through | |
1421 case Bytecodes::_d2l: tos_out = ltos; break; | |
1422 case Bytecodes::_i2f: // fall through | |
1423 case Bytecodes::_l2f: // fall through | |
1424 case Bytecodes::_d2f: tos_out = ftos; break; | |
1425 case Bytecodes::_i2d: // fall through | |
1426 case Bytecodes::_l2d: // fall through | |
1427 case Bytecodes::_f2d: tos_out = dtos; break; | |
1428 default : ShouldNotReachHere(); | |
1429 } | |
1430 transition(tos_in, tos_out); | |
1431 } | |
1432 #endif // ASSERT | |
1433 | |
1434 // Conversion | |
304 | 1435 // (Note: use push(rcx)/pop(rcx) for 1/2-word stack-ptr manipulation) |
0 | 1436 switch (bytecode()) { |
1437 case Bytecodes::_i2l: | |
1438 __ extend_sign(rdx, rax); | |
1439 break; | |
1440 case Bytecodes::_i2f: | |
304 | 1441 __ push(rax); // store int on tos |
0 | 1442 __ fild_s(at_rsp()); // load int to ST0 |
1443 __ f2ieee(); // truncate to float size | |
304 | 1444 __ pop(rcx); // adjust rsp |
0 | 1445 break; |
1446 case Bytecodes::_i2d: | |
304 | 1447 __ push(rax); // add one slot for d2ieee() |
1448 __ push(rax); // store int on tos | |
0 | 1449 __ fild_s(at_rsp()); // load int to ST0 |
1450 __ d2ieee(); // truncate to double size | |
304 | 1451 __ pop(rcx); // adjust rsp |
1452 __ pop(rcx); | |
0 | 1453 break; |
1454 case Bytecodes::_i2b: | |
1455 __ shll(rax, 24); // truncate upper 24 bits | |
1456 __ sarl(rax, 24); // and sign-extend byte | |
304 | 1457 LP64_ONLY(__ movsbl(rax, rax)); |
0 | 1458 break; |
1459 case Bytecodes::_i2c: | |
1460 __ andl(rax, 0xFFFF); // truncate upper 16 bits | |
304 | 1461 LP64_ONLY(__ movzwl(rax, rax)); |
0 | 1462 break; |
1463 case Bytecodes::_i2s: | |
1464 __ shll(rax, 16); // truncate upper 16 bits | |
1465 __ sarl(rax, 16); // and sign-extend short | |
304 | 1466 LP64_ONLY(__ movswl(rax, rax)); |
0 | 1467 break; |
1468 case Bytecodes::_l2i: | |
1469 /* nothing to do */ | |
1470 break; | |
1471 case Bytecodes::_l2f: | |
304 | 1472 __ push(rdx); // store long on tos |
1473 __ push(rax); | |
0 | 1474 __ fild_d(at_rsp()); // load long to ST0 |
1475 __ f2ieee(); // truncate to float size | |
304 | 1476 __ pop(rcx); // adjust rsp |
1477 __ pop(rcx); | |
0 | 1478 break; |
1479 case Bytecodes::_l2d: | |
304 | 1480 __ push(rdx); // store long on tos |
1481 __ push(rax); | |
0 | 1482 __ fild_d(at_rsp()); // load long to ST0 |
1483 __ d2ieee(); // truncate to double size | |
304 | 1484 __ pop(rcx); // adjust rsp |
1485 __ pop(rcx); | |
0 | 1486 break; |
1487 case Bytecodes::_f2i: | |
304 | 1488 __ push(rcx); // reserve space for argument |
0 | 1489 __ fstp_s(at_rsp()); // pass float argument on stack |
1490 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1); | |
1491 break; | |
1492 case Bytecodes::_f2l: | |
304 | 1493 __ push(rcx); // reserve space for argument |
0 | 1494 __ fstp_s(at_rsp()); // pass float argument on stack |
1495 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1); | |
1496 break; | |
1497 case Bytecodes::_f2d: | |
1498 /* nothing to do */ | |
1499 break; | |
1500 case Bytecodes::_d2i: | |
304 | 1501 __ push(rcx); // reserve space for argument |
1502 __ push(rcx); | |
0 | 1503 __ fstp_d(at_rsp()); // pass double argument on stack |
1504 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 2); | |
1505 break; | |
1506 case Bytecodes::_d2l: | |
304 | 1507 __ push(rcx); // reserve space for argument |
1508 __ push(rcx); | |
0 | 1509 __ fstp_d(at_rsp()); // pass double argument on stack |
1510 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 2); | |
1511 break; | |
1512 case Bytecodes::_d2f: | |
304 | 1513 __ push(rcx); // reserve space for f2ieee() |
0 | 1514 __ f2ieee(); // truncate to float size |
304 | 1515 __ pop(rcx); // adjust rsp |
0 | 1516 break; |
1517 default : | |
1518 ShouldNotReachHere(); | |
1519 } | |
1520 } | |
1521 | |
1522 | |
1523 void TemplateTable::lcmp() { | |
1524 transition(ltos, itos); | |
1525 // y = rdx:rax | |
1526 __ pop_l(rbx, rcx); // get x = rcx:rbx | |
1527 __ lcmp2int(rcx, rbx, rdx, rax);// rcx := cmp(x, y) | |
304 | 1528 __ mov(rax, rcx); |
0 | 1529 } |
1530 | |
1531 | |
1532 void TemplateTable::float_cmp(bool is_float, int unordered_result) { | |
1533 if (is_float) { | |
1534 __ fld_s(at_rsp()); | |
1535 } else { | |
1536 __ fld_d(at_rsp()); | |
304 | 1537 __ pop(rdx); |
0 | 1538 } |
304 | 1539 __ pop(rcx); |
0 | 1540 __ fcmp2int(rax, unordered_result < 0); |
1541 } | |
1542 | |
1543 | |
1544 void TemplateTable::branch(bool is_jsr, bool is_wide) { | |
1545 __ get_method(rcx); // ECX holds method | |
1546 __ profile_taken_branch(rax,rbx); // EAX holds updated MDP, EBX holds bumped taken count | |
1547 | |
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1548 const ByteSize be_offset = Method::backedge_counter_offset() + InvocationCounter::counter_offset(); |
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1549 const ByteSize inv_offset = Method::invocation_counter_offset() + InvocationCounter::counter_offset(); |
0 | 1550 const int method_offset = frame::interpreter_frame_method_offset * wordSize; |
1551 | |
1552 // Load up EDX with the branch displacement | |
1553 __ movl(rdx, at_bcp(1)); | |
304 | 1554 __ bswapl(rdx); |
0 | 1555 if (!is_wide) __ sarl(rdx, 16); |
304 | 1556 LP64_ONLY(__ movslq(rdx, rdx)); |
1557 | |
0 | 1558 |
1559 // Handle all the JSR stuff here, then exit. | |
1560 // It's much shorter and cleaner than intermingling with the | |
605 | 1561 // non-JSR normal-branch stuff occurring below. |
0 | 1562 if (is_jsr) { |
1563 // Pre-load the next target bytecode into EBX | |
1564 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1, 0)); | |
1565 | |
1566 // compute return address as bci in rax, | |
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1567 __ lea(rax, at_bcp((is_wide ? 5 : 3) - in_bytes(ConstMethod::codes_offset()))); |
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1568 __ subptr(rax, Address(rcx, Method::const_offset())); |
362 | 1569 // Adjust the bcp in RSI by the displacement in EDX |
304 | 1570 __ addptr(rsi, rdx); |
0 | 1571 // Push return address |
1572 __ push_i(rax); | |
1573 // jsr returns vtos | |
1574 __ dispatch_only_noverify(vtos); | |
1575 return; | |
1576 } | |
1577 | |
1578 // Normal (non-jsr) branch handling | |
1579 | |
362 | 1580 // Adjust the bcp in RSI by the displacement in EDX |
304 | 1581 __ addptr(rsi, rdx); |
0 | 1582 |
1583 assert(UseLoopCounter || !UseOnStackReplacement, "on-stack-replacement requires loop counters"); | |
1584 Label backedge_counter_overflow; | |
1585 Label profile_method; | |
1586 Label dispatch; | |
1587 if (UseLoopCounter) { | |
1588 // increment backedge counter for backward branches | |
1589 // rax,: MDO | |
1590 // rbx,: MDO bumped taken-count | |
1591 // rcx: method | |
1592 // rdx: target offset | |
1593 // rsi: target bcp | |
1594 // rdi: locals pointer | |
1595 __ testl(rdx, rdx); // check if forward or backward branch | |
1596 __ jcc(Assembler::positive, dispatch); // count only if backward branch | |
1597 | |
1783 | 1598 if (TieredCompilation) { |
1599 Label no_mdo; | |
1600 int increment = InvocationCounter::count_increment; | |
1601 int mask = ((1 << Tier0BackedgeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
1602 if (ProfileInterpreter) { | |
1603 // Are we profiling? | |
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1604 __ movptr(rbx, Address(rcx, in_bytes(Method::method_data_offset()))); |
1783 | 1605 __ testptr(rbx, rbx); |
1606 __ jccb(Assembler::zero, no_mdo); | |
1607 // Increment the MDO backedge counter | |
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1608 const Address mdo_backedge_counter(rbx, in_bytes(MethodData::backedge_counter_offset()) + |
1783 | 1609 in_bytes(InvocationCounter::counter_offset())); |
1610 __ increment_mask_and_jump(mdo_backedge_counter, increment, mask, | |
1611 rax, false, Assembler::zero, &backedge_counter_overflow); | |
1612 __ jmp(dispatch); | |
0 | 1613 } |
1783 | 1614 __ bind(no_mdo); |
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1615 // Increment backedge counter in Method* |
1783 | 1616 __ increment_mask_and_jump(Address(rcx, be_offset), increment, mask, |
1617 rax, false, Assembler::zero, &backedge_counter_overflow); | |
0 | 1618 } else { |
1783 | 1619 // increment counter |
1620 __ movl(rax, Address(rcx, be_offset)); // load backedge counter | |
1621 __ incrementl(rax, InvocationCounter::count_increment); // increment counter | |
1622 __ movl(Address(rcx, be_offset), rax); // store counter | |
1623 | |
1624 __ movl(rax, Address(rcx, inv_offset)); // load invocation counter | |
1625 __ andl(rax, InvocationCounter::count_mask_value); // and the status bits | |
1626 __ addl(rax, Address(rcx, be_offset)); // add both counters | |
1627 | |
1628 if (ProfileInterpreter) { | |
1629 // Test to see if we should create a method data oop | |
0 | 1630 __ cmp32(rax, |
1783 | 1631 ExternalAddress((address) &InvocationCounter::InterpreterProfileLimit)); |
1632 __ jcc(Assembler::less, dispatch); | |
1633 | |
1634 // if no method data exists, go to profile method | |
1635 __ test_method_data_pointer(rax, profile_method); | |
1636 | |
1637 if (UseOnStackReplacement) { | |
1638 // check for overflow against rbx, which is the MDO taken count | |
1639 __ cmp32(rbx, | |
1640 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1641 __ jcc(Assembler::below, dispatch); | |
1642 | |
1643 // When ProfileInterpreter is on, the backedge_count comes from the | |
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1644 // MethodData*, which value does not get reset on the call to |
1783 | 1645 // frequency_counter_overflow(). To avoid excessive calls to the overflow |
1646 // routine while the method is being compiled, add a second test to make | |
1647 // sure the overflow function is called only once every overflow_frequency. | |
1648 const int overflow_frequency = 1024; | |
1649 __ andptr(rbx, overflow_frequency-1); | |
1650 __ jcc(Assembler::zero, backedge_counter_overflow); | |
1651 } | |
1652 } else { | |
1653 if (UseOnStackReplacement) { | |
1654 // check for overflow against rax, which is the sum of the counters | |
1655 __ cmp32(rax, | |
1656 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1657 __ jcc(Assembler::aboveEqual, backedge_counter_overflow); | |
1658 | |
1659 } | |
0 | 1660 } |
1661 } | |
1662 __ bind(dispatch); | |
1663 } | |
1664 | |
1665 // Pre-load the next target bytecode into EBX | |
1666 __ load_unsigned_byte(rbx, Address(rsi, 0)); | |
1667 | |
1668 // continue with the bytecode @ target | |
1669 // rax,: return bci for jsr's, unused otherwise | |
1670 // rbx,: target bytecode | |
1671 // rsi: target bcp | |
1672 __ dispatch_only(vtos); | |
1673 | |
1674 if (UseLoopCounter) { | |
1675 if (ProfileInterpreter) { | |
1676 // Out-of-line code to allocate method data oop. | |
1677 __ bind(profile_method); | |
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1678 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
0 | 1679 __ load_unsigned_byte(rbx, Address(rsi, 0)); // restore target bytecode |
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1680 __ set_method_data_pointer_for_bcp(); |
0 | 1681 __ jmp(dispatch); |
1682 } | |
1683 | |
1684 if (UseOnStackReplacement) { | |
1685 | |
1686 // invocation counter overflow | |
1687 __ bind(backedge_counter_overflow); | |
304 | 1688 __ negptr(rdx); |
1689 __ addptr(rdx, rsi); // branch bcp | |
0 | 1690 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rdx); |
1691 __ load_unsigned_byte(rbx, Address(rsi, 0)); // restore target bytecode | |
1692 | |
1693 // rax,: osr nmethod (osr ok) or NULL (osr not possible) | |
1694 // rbx,: target bytecode | |
1695 // rdx: scratch | |
1696 // rdi: locals pointer | |
1697 // rsi: bcp | |
304 | 1698 __ testptr(rax, rax); // test result |
0 | 1699 __ jcc(Assembler::zero, dispatch); // no osr if null |
1700 // nmethod may have been invalidated (VM may block upon call_VM return) | |
1701 __ movl(rcx, Address(rax, nmethod::entry_bci_offset())); | |
1702 __ cmpl(rcx, InvalidOSREntryBci); | |
1703 __ jcc(Assembler::equal, dispatch); | |
1704 | |
1705 // We have the address of an on stack replacement routine in rax, | |
1706 // We need to prepare to execute the OSR method. First we must | |
1707 // migrate the locals and monitors off of the stack. | |
1708 | |
304 | 1709 __ mov(rbx, rax); // save the nmethod |
0 | 1710 |
1711 const Register thread = rcx; | |
1712 __ get_thread(thread); | |
1713 call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin)); | |
1714 // rax, is OSR buffer, move it to expected parameter location | |
304 | 1715 __ mov(rcx, rax); |
0 | 1716 |
1717 // pop the interpreter frame | |
304 | 1718 __ movptr(rdx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 1719 __ leave(); // remove frame anchor |
304 | 1720 __ pop(rdi); // get return address |
1721 __ mov(rsp, rdx); // set sp to sender sp | |
0 | 1722 |
1723 // Align stack pointer for compiled code (note that caller is | |
1724 // responsible for undoing this fixup by remembering the old SP | |
1725 // in an rbp,-relative location) | |
304 | 1726 __ andptr(rsp, -(StackAlignmentInBytes)); |
0 | 1727 |
1728 // push the (possibly adjusted) return address | |
304 | 1729 __ push(rdi); |
0 | 1730 |
1731 // and begin the OSR nmethod | |
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1732 __ jmp(Address(rbx, nmethod::osr_entry_point_offset())); |
0 | 1733 } |
1734 } | |
1735 } | |
1736 | |
1737 | |
1738 void TemplateTable::if_0cmp(Condition cc) { | |
1739 transition(itos, vtos); | |
1740 // assume branch is more often taken than not (loops use backward branches) | |
1741 Label not_taken; | |
1742 __ testl(rax, rax); | |
1743 __ jcc(j_not(cc), not_taken); | |
1744 branch(false, false); | |
1745 __ bind(not_taken); | |
1746 __ profile_not_taken_branch(rax); | |
1747 } | |
1748 | |
1749 | |
1750 void TemplateTable::if_icmp(Condition cc) { | |
1751 transition(itos, vtos); | |
1752 // assume branch is more often taken than not (loops use backward branches) | |
1753 Label not_taken; | |
1754 __ pop_i(rdx); | |
1755 __ cmpl(rdx, rax); | |
1756 __ jcc(j_not(cc), not_taken); | |
1757 branch(false, false); | |
1758 __ bind(not_taken); | |
1759 __ profile_not_taken_branch(rax); | |
1760 } | |
1761 | |
1762 | |
1763 void TemplateTable::if_nullcmp(Condition cc) { | |
1764 transition(atos, vtos); | |
1765 // assume branch is more often taken than not (loops use backward branches) | |
1766 Label not_taken; | |
304 | 1767 __ testptr(rax, rax); |
0 | 1768 __ jcc(j_not(cc), not_taken); |
1769 branch(false, false); | |
1770 __ bind(not_taken); | |
1771 __ profile_not_taken_branch(rax); | |
1772 } | |
1773 | |
1774 | |
1775 void TemplateTable::if_acmp(Condition cc) { | |
1776 transition(atos, vtos); | |
1777 // assume branch is more often taken than not (loops use backward branches) | |
1778 Label not_taken; | |
1779 __ pop_ptr(rdx); | |
304 | 1780 __ cmpptr(rdx, rax); |
0 | 1781 __ jcc(j_not(cc), not_taken); |
1782 branch(false, false); | |
1783 __ bind(not_taken); | |
1784 __ profile_not_taken_branch(rax); | |
1785 } | |
1786 | |
1787 | |
1788 void TemplateTable::ret() { | |
1789 transition(vtos, vtos); | |
1790 locals_index(rbx); | |
304 | 1791 __ movptr(rbx, iaddress(rbx)); // get return bci, compute return bcp |
0 | 1792 __ profile_ret(rbx, rcx); |
1793 __ get_method(rax); | |
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1794 __ movptr(rsi, Address(rax, Method::const_offset())); |
304 | 1795 __ lea(rsi, Address(rsi, rbx, Address::times_1, |
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1796 ConstMethod::codes_offset())); |
0 | 1797 __ dispatch_next(vtos); |
1798 } | |
1799 | |
1800 | |
1801 void TemplateTable::wide_ret() { | |
1802 transition(vtos, vtos); | |
1803 locals_index_wide(rbx); | |
304 | 1804 __ movptr(rbx, iaddress(rbx)); // get return bci, compute return bcp |
0 | 1805 __ profile_ret(rbx, rcx); |
1806 __ get_method(rax); | |
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1807 __ movptr(rsi, Address(rax, Method::const_offset())); |
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1808 __ lea(rsi, Address(rsi, rbx, Address::times_1, ConstMethod::codes_offset())); |
0 | 1809 __ dispatch_next(vtos); |
1810 } | |
1811 | |
1812 | |
1813 void TemplateTable::tableswitch() { | |
1814 Label default_case, continue_execution; | |
1815 transition(itos, vtos); | |
1816 // align rsi | |
304 | 1817 __ lea(rbx, at_bcp(wordSize)); |
1818 __ andptr(rbx, -wordSize); | |
0 | 1819 // load lo & hi |
1820 __ movl(rcx, Address(rbx, 1 * wordSize)); | |
1821 __ movl(rdx, Address(rbx, 2 * wordSize)); | |
304 | 1822 __ bswapl(rcx); |
1823 __ bswapl(rdx); | |
0 | 1824 // check against lo & hi |
1825 __ cmpl(rax, rcx); | |
1826 __ jccb(Assembler::less, default_case); | |
1827 __ cmpl(rax, rdx); | |
1828 __ jccb(Assembler::greater, default_case); | |
1829 // lookup dispatch offset | |
1830 __ subl(rax, rcx); | |
304 | 1831 __ movl(rdx, Address(rbx, rax, Address::times_4, 3 * BytesPerInt)); |
0 | 1832 __ profile_switch_case(rax, rbx, rcx); |
1833 // continue execution | |
1834 __ bind(continue_execution); | |
304 | 1835 __ bswapl(rdx); |
0 | 1836 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1)); |
304 | 1837 __ addptr(rsi, rdx); |
0 | 1838 __ dispatch_only(vtos); |
1839 // handle default | |
1840 __ bind(default_case); | |
1841 __ profile_switch_default(rax); | |
1842 __ movl(rdx, Address(rbx, 0)); | |
1843 __ jmp(continue_execution); | |
1844 } | |
1845 | |
1846 | |
1847 void TemplateTable::lookupswitch() { | |
1848 transition(itos, itos); | |
1849 __ stop("lookupswitch bytecode should have been rewritten"); | |
1850 } | |
1851 | |
1852 | |
1853 void TemplateTable::fast_linearswitch() { | |
1854 transition(itos, vtos); | |
1855 Label loop_entry, loop, found, continue_execution; | |
304 | 1856 // bswapl rax, so we can avoid bswapping the table entries |
1857 __ bswapl(rax); | |
0 | 1858 // align rsi |
304 | 1859 __ lea(rbx, at_bcp(wordSize)); // btw: should be able to get rid of this instruction (change offsets below) |
1860 __ andptr(rbx, -wordSize); | |
0 | 1861 // set counter |
1862 __ movl(rcx, Address(rbx, wordSize)); | |
304 | 1863 __ bswapl(rcx); |
0 | 1864 __ jmpb(loop_entry); |
1865 // table search | |
1866 __ bind(loop); | |
1867 __ cmpl(rax, Address(rbx, rcx, Address::times_8, 2 * wordSize)); | |
1868 __ jccb(Assembler::equal, found); | |
1869 __ bind(loop_entry); | |
304 | 1870 __ decrementl(rcx); |
0 | 1871 __ jcc(Assembler::greaterEqual, loop); |
1872 // default case | |
1873 __ profile_switch_default(rax); | |
1874 __ movl(rdx, Address(rbx, 0)); | |
1875 __ jmpb(continue_execution); | |
1876 // entry found -> get offset | |
1877 __ bind(found); | |
1878 __ movl(rdx, Address(rbx, rcx, Address::times_8, 3 * wordSize)); | |
1879 __ profile_switch_case(rcx, rax, rbx); | |
1880 // continue execution | |
1881 __ bind(continue_execution); | |
304 | 1882 __ bswapl(rdx); |
0 | 1883 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1)); |
304 | 1884 __ addptr(rsi, rdx); |
0 | 1885 __ dispatch_only(vtos); |
1886 } | |
1887 | |
1888 | |
1889 void TemplateTable::fast_binaryswitch() { | |
1890 transition(itos, vtos); | |
1891 // Implementation using the following core algorithm: | |
1892 // | |
1893 // int binary_search(int key, LookupswitchPair* array, int n) { | |
1894 // // Binary search according to "Methodik des Programmierens" by | |
1895 // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985. | |
1896 // int i = 0; | |
1897 // int j = n; | |
1898 // while (i+1 < j) { | |
1899 // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q) | |
1900 // // with Q: for all i: 0 <= i < n: key < a[i] | |
1901 // // where a stands for the array and assuming that the (inexisting) | |
1902 // // element a[n] is infinitely big. | |
1903 // int h = (i + j) >> 1; | |
1904 // // i < h < j | |
1905 // if (key < array[h].fast_match()) { | |
1906 // j = h; | |
1907 // } else { | |
1908 // i = h; | |
1909 // } | |
1910 // } | |
1911 // // R: a[i] <= key < a[i+1] or Q | |
1912 // // (i.e., if key is within array, i is the correct index) | |
1913 // return i; | |
1914 // } | |
1915 | |
1916 // register allocation | |
1917 const Register key = rax; // already set (tosca) | |
1918 const Register array = rbx; | |
1919 const Register i = rcx; | |
1920 const Register j = rdx; | |
1921 const Register h = rdi; // needs to be restored | |
1922 const Register temp = rsi; | |
1923 // setup array | |
1924 __ save_bcp(); | |
1925 | |
304 | 1926 __ lea(array, at_bcp(3*wordSize)); // btw: should be able to get rid of this instruction (change offsets below) |
1927 __ andptr(array, -wordSize); | |
0 | 1928 // initialize i & j |
1929 __ xorl(i, i); // i = 0; | |
1930 __ movl(j, Address(array, -wordSize)); // j = length(array); | |
1931 // Convert j into native byteordering | |
304 | 1932 __ bswapl(j); |
0 | 1933 // and start |
1934 Label entry; | |
1935 __ jmp(entry); | |
1936 | |
1937 // binary search loop | |
1938 { Label loop; | |
1939 __ bind(loop); | |
1940 // int h = (i + j) >> 1; | |
1941 __ leal(h, Address(i, j, Address::times_1)); // h = i + j; | |
1942 __ sarl(h, 1); // h = (i + j) >> 1; | |
1943 // if (key < array[h].fast_match()) { | |
1944 // j = h; | |
1945 // } else { | |
1946 // i = h; | |
1947 // } | |
1948 // Convert array[h].match to native byte-ordering before compare | |
1949 __ movl(temp, Address(array, h, Address::times_8, 0*wordSize)); | |
304 | 1950 __ bswapl(temp); |
0 | 1951 __ cmpl(key, temp); |
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1952 // j = h if (key < array[h].fast_match()) |
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1953 __ cmov32(Assembler::less , j, h); |
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1954 // i = h if (key >= array[h].fast_match()) |
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1955 __ cmov32(Assembler::greaterEqual, i, h); |
0 | 1956 // while (i+1 < j) |
1957 __ bind(entry); | |
1958 __ leal(h, Address(i, 1)); // i+1 | |
1959 __ cmpl(h, j); // i+1 < j | |
1960 __ jcc(Assembler::less, loop); | |
1961 } | |
1962 | |
1963 // end of binary search, result index is i (must check again!) | |
1964 Label default_case; | |
1965 // Convert array[i].match to native byte-ordering before compare | |
1966 __ movl(temp, Address(array, i, Address::times_8, 0*wordSize)); | |
304 | 1967 __ bswapl(temp); |
0 | 1968 __ cmpl(key, temp); |
1969 __ jcc(Assembler::notEqual, default_case); | |
1970 | |
1971 // entry found -> j = offset | |
1972 __ movl(j , Address(array, i, Address::times_8, 1*wordSize)); | |
1973 __ profile_switch_case(i, key, array); | |
304 | 1974 __ bswapl(j); |
1975 LP64_ONLY(__ movslq(j, j)); | |
0 | 1976 __ restore_bcp(); |
1977 __ restore_locals(); // restore rdi | |
1978 __ load_unsigned_byte(rbx, Address(rsi, j, Address::times_1)); | |
1979 | |
304 | 1980 __ addptr(rsi, j); |
0 | 1981 __ dispatch_only(vtos); |
1982 | |
1983 // default case -> j = default offset | |
1984 __ bind(default_case); | |
1985 __ profile_switch_default(i); | |
1986 __ movl(j, Address(array, -2*wordSize)); | |
304 | 1987 __ bswapl(j); |
1988 LP64_ONLY(__ movslq(j, j)); | |
0 | 1989 __ restore_bcp(); |
1990 __ restore_locals(); // restore rdi | |
1991 __ load_unsigned_byte(rbx, Address(rsi, j, Address::times_1)); | |
304 | 1992 __ addptr(rsi, j); |
0 | 1993 __ dispatch_only(vtos); |
1994 } | |
1995 | |
1996 | |
1997 void TemplateTable::_return(TosState state) { | |
1998 transition(state, state); | |
1999 assert(_desc->calls_vm(), "inconsistent calls_vm information"); // call in remove_activation | |
2000 | |
2001 if (_desc->bytecode() == Bytecodes::_return_register_finalizer) { | |
2002 assert(state == vtos, "only valid state"); | |
304 | 2003 __ movptr(rax, aaddress(0)); |
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2004 __ load_klass(rdi, rax); |
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2005 __ movl(rdi, Address(rdi, Klass::access_flags_offset())); |
0 | 2006 __ testl(rdi, JVM_ACC_HAS_FINALIZER); |
2007 Label skip_register_finalizer; | |
2008 __ jcc(Assembler::zero, skip_register_finalizer); | |
2009 | |
2010 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), rax); | |
2011 | |
2012 __ bind(skip_register_finalizer); | |
2013 } | |
2014 | |
2015 __ remove_activation(state, rsi); | |
2016 __ jmp(rsi); | |
2017 } | |
2018 | |
2019 | |
2020 // ---------------------------------------------------------------------------- | |
2021 // Volatile variables demand their effects be made known to all CPU's in | |
2022 // order. Store buffers on most chips allow reads & writes to reorder; the | |
2023 // JMM's ReadAfterWrite.java test fails in -Xint mode without some kind of | |
2024 // memory barrier (i.e., it's not sufficient that the interpreter does not | |
2025 // reorder volatile references, the hardware also must not reorder them). | |
2026 // | |
2027 // According to the new Java Memory Model (JMM): | |
2028 // (1) All volatiles are serialized wrt to each other. | |
2029 // ALSO reads & writes act as aquire & release, so: | |
2030 // (2) A read cannot let unrelated NON-volatile memory refs that happen after | |
2031 // the read float up to before the read. It's OK for non-volatile memory refs | |
2032 // that happen before the volatile read to float down below it. | |
2033 // (3) Similar a volatile write cannot let unrelated NON-volatile memory refs | |
2034 // that happen BEFORE the write float down to after the write. It's OK for | |
2035 // non-volatile memory refs that happen after the volatile write to float up | |
2036 // before it. | |
2037 // | |
2038 // We only put in barriers around volatile refs (they are expensive), not | |
2039 // _between_ memory refs (that would require us to track the flavor of the | |
2040 // previous memory refs). Requirements (2) and (3) require some barriers | |
2041 // before volatile stores and after volatile loads. These nearly cover | |
2042 // requirement (1) but miss the volatile-store-volatile-load case. This final | |
2043 // case is placed after volatile-stores although it could just as well go | |
2044 // before volatile-loads. | |
304 | 2045 void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits order_constraint ) { |
0 | 2046 // Helper function to insert a is-volatile test and memory barrier |
2047 if( !os::is_MP() ) return; // Not needed on single CPU | |
304 | 2048 __ membar(order_constraint); |
0 | 2049 } |
2050 | |
1565 | 2051 void TemplateTable::resolve_cache_and_index(int byte_no, |
2052 Register Rcache, | |
2053 Register index, | |
2054 size_t index_size) { | |
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2055 const Register temp = rbx; |
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2056 assert_different_registers(Rcache, index, temp); |
1565 | 2057 |
0 | 2058 Label resolved; |
1565 | 2059 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range"); |
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2060 __ get_cache_and_index_and_bytecode_at_bcp(Rcache, index, temp, byte_no, 1, index_size); |
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2061 __ cmpl(temp, (int) bytecode()); // have we resolved this bytecode? |
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2062 __ jcc(Assembler::equal, resolved); |
0 | 2063 |
2064 // resolve first time through | |
2065 address entry; | |
2066 switch (bytecode()) { | |
2067 case Bytecodes::_getstatic : // fall through | |
2068 case Bytecodes::_putstatic : // fall through | |
2069 case Bytecodes::_getfield : // fall through | |
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2070 case Bytecodes::_putfield : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put); break; |
0 | 2071 case Bytecodes::_invokevirtual : // fall through |
2072 case Bytecodes::_invokespecial : // fall through | |
2073 case Bytecodes::_invokestatic : // fall through | |
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2074 case Bytecodes::_invokeinterface: entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); break; |
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2075 case Bytecodes::_invokehandle : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokehandle); break; |
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2076 case Bytecodes::_invokedynamic : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic); break; |
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2077 default: |
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2078 fatal(err_msg("unexpected bytecode: %s", Bytecodes::name(bytecode()))); |
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2079 break; |
0 | 2080 } |
2081 __ movl(temp, (int)bytecode()); | |
2082 __ call_VM(noreg, entry, temp); | |
2083 // Update registers with resolved info | |
1565 | 2084 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size); |
0 | 2085 __ bind(resolved); |
2086 } | |
2087 | |
2088 | |
2089 // The cache and index registers must be set before call | |
2090 void TemplateTable::load_field_cp_cache_entry(Register obj, | |
2091 Register cache, | |
2092 Register index, | |
2093 Register off, | |
2094 Register flags, | |
2095 bool is_static = false) { | |
2096 assert_different_registers(cache, index, flags, off); | |
2097 | |
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2098 ByteSize cp_base_offset = ConstantPoolCache::base_offset(); |
0 | 2099 // Field offset |
304 | 2100 __ movptr(off, Address(cache, index, Address::times_ptr, |
2101 in_bytes(cp_base_offset + ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2102 // Flags |
304 | 2103 __ movl(flags, Address(cache, index, Address::times_ptr, |
0 | 2104 in_bytes(cp_base_offset + ConstantPoolCacheEntry::flags_offset()))); |
2105 | |
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2106 // klass overwrite register |
0 | 2107 if (is_static) { |
304 | 2108 __ movptr(obj, Address(cache, index, Address::times_ptr, |
2109 in_bytes(cp_base_offset + ConstantPoolCacheEntry::f1_offset()))); | |
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2110 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
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2111 __ movptr(obj, Address(obj, mirror_offset)); |
0 | 2112 } |
2113 } | |
2114 | |
2115 void TemplateTable::load_invoke_cp_cache_entry(int byte_no, | |
2116 Register method, | |
2117 Register itable_index, | |
2118 Register flags, | |
2119 bool is_invokevirtual, | |
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2120 bool is_invokevfinal, /*unused*/ |
1565 | 2121 bool is_invokedynamic) { |
0 | 2122 // setup registers |
2123 const Register cache = rcx; | |
2124 const Register index = rdx; | |
2125 assert_different_registers(method, flags); | |
2126 assert_different_registers(method, cache, index); | |
2127 assert_different_registers(itable_index, flags); | |
2128 assert_different_registers(itable_index, cache, index); | |
2129 // determine constant pool cache field offsets | |
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2130 assert(is_invokevirtual == (byte_no == f2_byte), "is_invokevirtual flag redundant"); |
0 | 2131 const int method_offset = in_bytes( |
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2132 ConstantPoolCache::base_offset() + |
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2133 ((byte_no == f2_byte) |
0 | 2134 ? ConstantPoolCacheEntry::f2_offset() |
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2135 : ConstantPoolCacheEntry::f1_offset())); |
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2136 const int flags_offset = in_bytes(ConstantPoolCache::base_offset() + |
0 | 2137 ConstantPoolCacheEntry::flags_offset()); |
2138 // access constant pool cache fields | |
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2139 const int index_offset = in_bytes(ConstantPoolCache::base_offset() + |
0 | 2140 ConstantPoolCacheEntry::f2_offset()); |
2141 | |
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2142 size_t index_size = (is_invokedynamic ? sizeof(u4) : sizeof(u2)); |
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2143 resolve_cache_and_index(byte_no, cache, index, index_size); |
1565 | 2144 __ movptr(method, Address(cache, index, Address::times_ptr, method_offset)); |
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2145 |
0 | 2146 if (itable_index != noreg) { |
304 | 2147 __ movptr(itable_index, Address(cache, index, Address::times_ptr, index_offset)); |
0 | 2148 } |
1565 | 2149 __ movl(flags, Address(cache, index, Address::times_ptr, flags_offset)); |
0 | 2150 } |
2151 | |
2152 | |
2153 // The registers cache and index expected to be set before call. | |
2154 // Correct values of the cache and index registers are preserved. | |
2155 void TemplateTable::jvmti_post_field_access(Register cache, | |
2156 Register index, | |
2157 bool is_static, | |
2158 bool has_tos) { | |
2159 if (JvmtiExport::can_post_field_access()) { | |
2160 // Check to see if a field access watch has been set before we take | |
2161 // the time to call into the VM. | |
2162 Label L1; | |
2163 assert_different_registers(cache, index, rax); | |
2164 __ mov32(rax, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2165 __ testl(rax,rax); | |
2166 __ jcc(Assembler::zero, L1); | |
2167 | |
2168 // cache entry pointer | |
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2169 __ addptr(cache, in_bytes(ConstantPoolCache::base_offset())); |
0 | 2170 __ shll(index, LogBytesPerWord); |
304 | 2171 __ addptr(cache, index); |
0 | 2172 if (is_static) { |
304 | 2173 __ xorptr(rax, rax); // NULL object reference |
0 | 2174 } else { |
2175 __ pop(atos); // Get the object | |
2176 __ verify_oop(rax); | |
2177 __ push(atos); // Restore stack state | |
2178 } | |
2179 // rax,: object pointer or NULL | |
2180 // cache: cache entry pointer | |
2181 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), | |
2182 rax, cache); | |
2183 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2184 __ bind(L1); | |
2185 } | |
2186 } | |
2187 | |
2188 void TemplateTable::pop_and_check_object(Register r) { | |
2189 __ pop_ptr(r); | |
2190 __ null_check(r); // for field access must check obj. | |
2191 __ verify_oop(r); | |
2192 } | |
2193 | |
2194 void TemplateTable::getfield_or_static(int byte_no, bool is_static) { | |
2195 transition(vtos, vtos); | |
2196 | |
2197 const Register cache = rcx; | |
2198 const Register index = rdx; | |
2199 const Register obj = rcx; | |
2200 const Register off = rbx; | |
2201 const Register flags = rax; | |
2202 | |
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2203 resolve_cache_and_index(byte_no, cache, index, sizeof(u2)); |
0 | 2204 jvmti_post_field_access(cache, index, is_static, false); |
2205 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2206 | |
2207 if (!is_static) pop_and_check_object(obj); | |
2208 | |
2209 const Address lo(obj, off, Address::times_1, 0*wordSize); | |
2210 const Address hi(obj, off, Address::times_1, 1*wordSize); | |
2211 | |
2212 Label Done, notByte, notInt, notShort, notChar, notLong, notFloat, notObj, notDouble; | |
2213 | |
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2214 __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift); |
0 | 2215 assert(btos == 0, "change code, btos != 0"); |
2216 // btos | |
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2217 __ andptr(flags, ConstantPoolCacheEntry::tos_state_mask); |
0 | 2218 __ jcc(Assembler::notZero, notByte); |
2219 | |
2220 __ load_signed_byte(rax, lo ); | |
2221 __ push(btos); | |
2222 // Rewrite bytecode to be faster | |
2223 if (!is_static) { | |
2224 patch_bytecode(Bytecodes::_fast_bgetfield, rcx, rbx); | |
2225 } | |
2226 __ jmp(Done); | |
2227 | |
2228 __ bind(notByte); | |
2229 // itos | |
2230 __ cmpl(flags, itos ); | |
2231 __ jcc(Assembler::notEqual, notInt); | |
2232 | |
2233 __ movl(rax, lo ); | |
2234 __ push(itos); | |
2235 // Rewrite bytecode to be faster | |
2236 if (!is_static) { | |
2237 patch_bytecode(Bytecodes::_fast_igetfield, rcx, rbx); | |
2238 } | |
2239 __ jmp(Done); | |
2240 | |
2241 __ bind(notInt); | |
2242 // atos | |
2243 __ cmpl(flags, atos ); | |
2244 __ jcc(Assembler::notEqual, notObj); | |
2245 | |
2246 __ movl(rax, lo ); | |
2247 __ push(atos); | |
2248 if (!is_static) { | |
2249 patch_bytecode(Bytecodes::_fast_agetfield, rcx, rbx); | |
2250 } | |
2251 __ jmp(Done); | |
2252 | |
2253 __ bind(notObj); | |
2254 // ctos | |
2255 __ cmpl(flags, ctos ); | |
2256 __ jcc(Assembler::notEqual, notChar); | |
2257 | |
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2258 __ load_unsigned_short(rax, lo ); |
0 | 2259 __ push(ctos); |
2260 if (!is_static) { | |
2261 patch_bytecode(Bytecodes::_fast_cgetfield, rcx, rbx); | |
2262 } | |
2263 __ jmp(Done); | |
2264 | |
2265 __ bind(notChar); | |
2266 // stos | |
2267 __ cmpl(flags, stos ); | |
2268 __ jcc(Assembler::notEqual, notShort); | |
2269 | |
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2270 __ load_signed_short(rax, lo ); |
0 | 2271 __ push(stos); |
2272 if (!is_static) { | |
2273 patch_bytecode(Bytecodes::_fast_sgetfield, rcx, rbx); | |
2274 } | |
2275 __ jmp(Done); | |
2276 | |
2277 __ bind(notShort); | |
2278 // ltos | |
2279 __ cmpl(flags, ltos ); | |
2280 __ jcc(Assembler::notEqual, notLong); | |
2281 | |
2282 // Generate code as if volatile. There just aren't enough registers to | |
2283 // save that information and this code is faster than the test. | |
2284 __ fild_d(lo); // Must load atomically | |
304 | 2285 __ subptr(rsp,2*wordSize); // Make space for store |
0 | 2286 __ fistp_d(Address(rsp,0)); |
304 | 2287 __ pop(rax); |
2288 __ pop(rdx); | |
0 | 2289 |
2290 __ push(ltos); | |
2291 // Don't rewrite to _fast_lgetfield for potential volatile case. | |
2292 __ jmp(Done); | |
2293 | |
2294 __ bind(notLong); | |
2295 // ftos | |
2296 __ cmpl(flags, ftos ); | |
2297 __ jcc(Assembler::notEqual, notFloat); | |
2298 | |
2299 __ fld_s(lo); | |
2300 __ push(ftos); | |
2301 if (!is_static) { | |
2302 patch_bytecode(Bytecodes::_fast_fgetfield, rcx, rbx); | |
2303 } | |
2304 __ jmp(Done); | |
2305 | |
2306 __ bind(notFloat); | |
2307 // dtos | |
2308 __ cmpl(flags, dtos ); | |
2309 __ jcc(Assembler::notEqual, notDouble); | |
2310 | |
2311 __ fld_d(lo); | |
2312 __ push(dtos); | |
2313 if (!is_static) { | |
2314 patch_bytecode(Bytecodes::_fast_dgetfield, rcx, rbx); | |
2315 } | |
2316 __ jmpb(Done); | |
2317 | |
2318 __ bind(notDouble); | |
2319 | |
2320 __ stop("Bad state"); | |
2321 | |
2322 __ bind(Done); | |
2323 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). | |
2324 // volatile_barrier( ); | |
2325 } | |
2326 | |
2327 | |
2328 void TemplateTable::getfield(int byte_no) { | |
2329 getfield_or_static(byte_no, false); | |
2330 } | |
2331 | |
2332 | |
2333 void TemplateTable::getstatic(int byte_no) { | |
2334 getfield_or_static(byte_no, true); | |
2335 } | |
2336 | |
2337 // The registers cache and index expected to be set before call. | |
2338 // The function may destroy various registers, just not the cache and index registers. | |
2339 void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) { | |
2340 | |
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2341 ByteSize cp_base_offset = ConstantPoolCache::base_offset(); |
0 | 2342 |
2343 if (JvmtiExport::can_post_field_modification()) { | |
2344 // Check to see if a field modification watch has been set before we take | |
2345 // the time to call into the VM. | |
2346 Label L1; | |
2347 assert_different_registers(cache, index, rax); | |
2348 __ mov32(rax, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
2349 __ testl(rax, rax); | |
2350 __ jcc(Assembler::zero, L1); | |
2351 | |
2352 // The cache and index registers have been already set. | |
2353 // This allows to eliminate this call but the cache and index | |
2354 // registers have to be correspondingly used after this line. | |
2355 __ get_cache_and_index_at_bcp(rax, rdx, 1); | |
2356 | |
2357 if (is_static) { | |
2358 // Life is simple. Null out the object pointer. | |
304 | 2359 __ xorptr(rbx, rbx); |
0 | 2360 } else { |
2361 // Life is harder. The stack holds the value on top, followed by the object. | |
2362 // We don't know the size of the value, though; it could be one or two words | |
2363 // depending on its type. As a result, we must find the type to determine where | |
2364 // the object is. | |
2365 Label two_word, valsize_known; | |
304 | 2366 __ movl(rcx, Address(rax, rdx, Address::times_ptr, in_bytes(cp_base_offset + |
0 | 2367 ConstantPoolCacheEntry::flags_offset()))); |
304 | 2368 __ mov(rbx, rsp); |
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2369 __ shrl(rcx, ConstantPoolCacheEntry::tos_state_shift); |
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2370 // Make sure we don't need to mask rcx after the above shift |
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2371 ConstantPoolCacheEntry::verify_tos_state_shift(); |
0 | 2372 __ cmpl(rcx, ltos); |
2373 __ jccb(Assembler::equal, two_word); | |
2374 __ cmpl(rcx, dtos); | |
2375 __ jccb(Assembler::equal, two_word); | |
304 | 2376 __ addptr(rbx, Interpreter::expr_offset_in_bytes(1)); // one word jvalue (not ltos, dtos) |
0 | 2377 __ jmpb(valsize_known); |
2378 | |
2379 __ bind(two_word); | |
304 | 2380 __ addptr(rbx, Interpreter::expr_offset_in_bytes(2)); // two words jvalue |
0 | 2381 |
2382 __ bind(valsize_known); | |
2383 // setup object pointer | |
304 | 2384 __ movptr(rbx, Address(rbx, 0)); |
0 | 2385 } |
2386 // cache entry pointer | |
304 | 2387 __ addptr(rax, in_bytes(cp_base_offset)); |
0 | 2388 __ shll(rdx, LogBytesPerWord); |
304 | 2389 __ addptr(rax, rdx); |
0 | 2390 // object (tos) |
304 | 2391 __ mov(rcx, rsp); |
0 | 2392 // rbx,: object pointer set up above (NULL if static) |
2393 // rax,: cache entry pointer | |
2394 // rcx: jvalue object on the stack | |
2395 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), | |
2396 rbx, rax, rcx); | |
2397 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2398 __ bind(L1); | |
2399 } | |
2400 } | |
2401 | |
2402 | |
2403 void TemplateTable::putfield_or_static(int byte_no, bool is_static) { | |
2404 transition(vtos, vtos); | |
2405 | |
2406 const Register cache = rcx; | |
2407 const Register index = rdx; | |
2408 const Register obj = rcx; | |
2409 const Register off = rbx; | |
2410 const Register flags = rax; | |
2411 | |
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2412 resolve_cache_and_index(byte_no, cache, index, sizeof(u2)); |
0 | 2413 jvmti_post_field_mod(cache, index, is_static); |
2414 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2415 | |
2416 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). | |
2417 // volatile_barrier( ); | |
2418 | |
2419 Label notVolatile, Done; | |
2420 __ movl(rdx, flags); | |
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2421 __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift); |
0 | 2422 __ andl(rdx, 0x1); |
2423 | |
2424 // field addresses | |
2425 const Address lo(obj, off, Address::times_1, 0*wordSize); | |
2426 const Address hi(obj, off, Address::times_1, 1*wordSize); | |
2427 | |
2428 Label notByte, notInt, notShort, notChar, notLong, notFloat, notObj, notDouble; | |
2429 | |
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2430 __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift); |
0 | 2431 assert(btos == 0, "change code, btos != 0"); |
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2432 __ andl(flags, ConstantPoolCacheEntry::tos_state_mask); |
0 | 2433 __ jcc(Assembler::notZero, notByte); |
2434 | |
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2436 { |
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2437 __ pop(btos); |
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2438 if (!is_static) pop_and_check_object(obj); |
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2439 __ movb(lo, rax); |
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2440 if (!is_static) { |
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2441 patch_bytecode(Bytecodes::_fast_bputfield, rcx, rbx, true, byte_no); |
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2442 } |
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2443 __ jmp(Done); |
0 | 2444 } |
2445 | |
2446 __ bind(notByte); | |
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2447 __ cmpl(flags, itos); |
0 | 2448 __ jcc(Assembler::notEqual, notInt); |
2449 | |
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2450 // itos |
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2451 { |
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2452 __ pop(itos); |
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2453 if (!is_static) pop_and_check_object(obj); |
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2454 __ movl(lo, rax); |
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2455 if (!is_static) { |
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2456 patch_bytecode(Bytecodes::_fast_iputfield, rcx, rbx, true, byte_no); |
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2457 } |
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2458 __ jmp(Done); |
0 | 2459 } |
2460 | |
2461 __ bind(notInt); | |
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2462 __ cmpl(flags, atos); |
0 | 2463 __ jcc(Assembler::notEqual, notObj); |
2464 | |
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2465 // atos |
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2466 { |
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2467 __ pop(atos); |
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2468 if (!is_static) pop_and_check_object(obj); |
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2469 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
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2470 if (!is_static) { |
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2471 patch_bytecode(Bytecodes::_fast_aputfield, rcx, rbx, true, byte_no); |
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2472 } |
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2473 __ jmp(Done); |
0 | 2474 } |
342
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2475 |
0 | 2476 __ bind(notObj); |
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2477 __ cmpl(flags, ctos); |
0 | 2478 __ jcc(Assembler::notEqual, notChar); |
2479 | |
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2480 // ctos |
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2481 { |
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2482 __ pop(ctos); |
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2483 if (!is_static) pop_and_check_object(obj); |
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2484 __ movw(lo, rax); |
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2485 if (!is_static) { |
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2486 patch_bytecode(Bytecodes::_fast_cputfield, rcx, rbx, true, byte_no); |
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2487 } |
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2488 __ jmp(Done); |
0 | 2489 } |
2490 | |
2491 __ bind(notChar); | |
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2492 __ cmpl(flags, stos); |
0 | 2493 __ jcc(Assembler::notEqual, notShort); |
2494 | |
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2495 // stos |
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2496 { |
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2497 __ pop(stos); |
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2498 if (!is_static) pop_and_check_object(obj); |
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2499 __ movw(lo, rax); |
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2500 if (!is_static) { |
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2501 patch_bytecode(Bytecodes::_fast_sputfield, rcx, rbx, true, byte_no); |
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2502 } |
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2503 __ jmp(Done); |
0 | 2504 } |
2505 | |
2506 __ bind(notShort); | |
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2507 __ cmpl(flags, ltos); |
0 | 2508 __ jcc(Assembler::notEqual, notLong); |
2509 | |
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2510 // ltos |
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2511 { |
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2512 Label notVolatileLong; |
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2513 __ testl(rdx, rdx); |
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2514 __ jcc(Assembler::zero, notVolatileLong); |
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2515 |
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2516 __ pop(ltos); // overwrites rdx, do this after testing volatile. |
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2517 if (!is_static) pop_and_check_object(obj); |
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2518 |
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2519 // Replace with real volatile test |
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2520 __ push(rdx); |
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2521 __ push(rax); // Must update atomically with FIST |
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2522 __ fild_d(Address(rsp,0)); // So load into FPU register |
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2523 __ fistp_d(lo); // and put into memory atomically |
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2524 __ addptr(rsp, 2*wordSize); |
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2525 // volatile_barrier(); |
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2526 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | |
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2527 Assembler::StoreStore)); |
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2528 // Don't rewrite volatile version |
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2529 __ jmp(notVolatile); |
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|
2530 |
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2531 __ bind(notVolatileLong); |
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|
2532 |
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2533 __ pop(ltos); // overwrites rdx |
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2534 if (!is_static) pop_and_check_object(obj); |
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2535 NOT_LP64(__ movptr(hi, rdx)); |
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2536 __ movptr(lo, rax); |
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2537 if (!is_static) { |
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2538 patch_bytecode(Bytecodes::_fast_lputfield, rcx, rbx, true, byte_no); |
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2539 } |
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2540 __ jmp(notVolatile); |
0 | 2541 } |
2542 | |
2543 __ bind(notLong); | |
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2544 __ cmpl(flags, ftos); |
0 | 2545 __ jcc(Assembler::notEqual, notFloat); |
2546 | |
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|
2547 // ftos |
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|
2548 { |
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|
2549 __ pop(ftos); |
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|
2550 if (!is_static) pop_and_check_object(obj); |
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|
2551 __ fstp_s(lo); |
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|
2552 if (!is_static) { |
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2553 patch_bytecode(Bytecodes::_fast_fputfield, rcx, rbx, true, byte_no); |
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2554 } |
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2555 __ jmp(Done); |
0 | 2556 } |
2557 | |
2558 __ bind(notFloat); | |
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2559 #ifdef ASSERT |
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2560 __ cmpl(flags, dtos); |
0 | 2561 __ jcc(Assembler::notEqual, notDouble); |
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2562 #endif |
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|
2563 |
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|
2564 // dtos |
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|
2565 { |
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|
2566 __ pop(dtos); |
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|
2567 if (!is_static) pop_and_check_object(obj); |
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|
2568 __ fstp_d(lo); |
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|
2569 if (!is_static) { |
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|
2570 patch_bytecode(Bytecodes::_fast_dputfield, rcx, rbx, true, byte_no); |
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2571 } |
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|
2572 __ jmp(Done); |
0 | 2573 } |
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2574 |
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2575 #ifdef ASSERT |
0 | 2576 __ bind(notDouble); |
2577 __ stop("Bad state"); | |
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2578 #endif |
0 | 2579 |
2580 __ bind(Done); | |
2581 | |
2582 // Check for volatile store | |
2583 __ testl(rdx, rdx); | |
2584 __ jcc(Assembler::zero, notVolatile); | |
304 | 2585 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | |
2586 Assembler::StoreStore)); | |
0 | 2587 __ bind(notVolatile); |
2588 } | |
2589 | |
2590 | |
2591 void TemplateTable::putfield(int byte_no) { | |
2592 putfield_or_static(byte_no, false); | |
2593 } | |
2594 | |
2595 | |
2596 void TemplateTable::putstatic(int byte_no) { | |
2597 putfield_or_static(byte_no, true); | |
2598 } | |
2599 | |
2600 void TemplateTable::jvmti_post_fast_field_mod() { | |
2601 if (JvmtiExport::can_post_field_modification()) { | |
2602 // Check to see if a field modification watch has been set before we take | |
2603 // the time to call into the VM. | |
2604 Label L2; | |
5995
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|
2605 __ mov32(rcx, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); |
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2606 __ testl(rcx,rcx); |
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2607 __ jcc(Assembler::zero, L2); |
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2608 __ pop_ptr(rbx); // copy the object pointer from tos |
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|
2609 __ verify_oop(rbx); |
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|
2610 __ push_ptr(rbx); // put the object pointer back on tos |
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|
2611 |
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2612 // Save tos values before call_VM() clobbers them. Since we have |
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2613 // to do it for every data type, we use the saved values as the |
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2614 // jvalue object. |
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2615 switch (bytecode()) { // load values into the jvalue object |
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2616 case Bytecodes::_fast_aputfield: __ push_ptr(rax); break; |
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2617 case Bytecodes::_fast_bputfield: // fall through |
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2618 case Bytecodes::_fast_sputfield: // fall through |
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2619 case Bytecodes::_fast_cputfield: // fall through |
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2620 case Bytecodes::_fast_iputfield: __ push_i(rax); break; |
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2621 case Bytecodes::_fast_dputfield: __ push_d(); break; |
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2622 case Bytecodes::_fast_fputfield: __ push_f(); break; |
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2623 case Bytecodes::_fast_lputfield: __ push_l(rax); break; |
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2624 |
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2625 default: |
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2626 ShouldNotReachHere(); |
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2627 } |
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2628 __ mov(rcx, rsp); // points to jvalue on the stack |
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2629 // access constant pool cache entry |
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2630 __ get_cache_entry_pointer_at_bcp(rax, rdx, 1); |
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2631 __ verify_oop(rbx); |
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2632 // rbx,: object pointer copied above |
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2633 // rax,: cache entry pointer |
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2634 // rcx: jvalue object on the stack |
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2635 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), rbx, rax, rcx); |
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2636 |
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2637 switch (bytecode()) { // restore tos values |
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2638 case Bytecodes::_fast_aputfield: __ pop_ptr(rax); break; |
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2639 case Bytecodes::_fast_bputfield: // fall through |
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2640 case Bytecodes::_fast_sputfield: // fall through |
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2641 case Bytecodes::_fast_cputfield: // fall through |
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2642 case Bytecodes::_fast_iputfield: __ pop_i(rax); break; |
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2643 case Bytecodes::_fast_dputfield: __ pop_d(); break; |
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2644 case Bytecodes::_fast_fputfield: __ pop_f(); break; |
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2645 case Bytecodes::_fast_lputfield: __ pop_l(rax); break; |
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2646 } |
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2647 __ bind(L2); |
0 | 2648 } |
2649 } | |
2650 | |
2651 void TemplateTable::fast_storefield(TosState state) { | |
2652 transition(state, vtos); | |
2653 | |
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2654 ByteSize base = ConstantPoolCache::base_offset(); |
0 | 2655 |
2656 jvmti_post_fast_field_mod(); | |
2657 | |
2658 // access constant pool cache | |
2659 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2660 | |
2661 // test for volatile with rdx but rdx is tos register for lputfield. | |
304 | 2662 if (bytecode() == Bytecodes::_fast_lputfield) __ push(rdx); |
2663 __ movl(rdx, Address(rcx, rbx, Address::times_ptr, in_bytes(base + | |
0 | 2664 ConstantPoolCacheEntry::flags_offset()))); |
2665 | |
2666 // replace index with field offset from cache entry | |
304 | 2667 __ movptr(rbx, Address(rcx, rbx, Address::times_ptr, in_bytes(base + ConstantPoolCacheEntry::f2_offset()))); |
0 | 2668 |
2669 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). | |
2670 // volatile_barrier( ); | |
2671 | |
2672 Label notVolatile, Done; | |
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2673 __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift); |
0 | 2674 __ andl(rdx, 0x1); |
2675 // Check for volatile store | |
2676 __ testl(rdx, rdx); | |
2677 __ jcc(Assembler::zero, notVolatile); | |
2678 | |
304 | 2679 if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx); |
0 | 2680 |
2681 // Get object from stack | |
2682 pop_and_check_object(rcx); | |
2683 | |
2684 // field addresses | |
2685 const Address lo(rcx, rbx, Address::times_1, 0*wordSize); | |
2686 const Address hi(rcx, rbx, Address::times_1, 1*wordSize); | |
2687 | |
2688 // access field | |
2689 switch (bytecode()) { | |
2690 case Bytecodes::_fast_bputfield: __ movb(lo, rax); break; | |
2691 case Bytecodes::_fast_sputfield: // fall through | |
2692 case Bytecodes::_fast_cputfield: __ movw(lo, rax); break; | |
2693 case Bytecodes::_fast_iputfield: __ movl(lo, rax); break; | |
304 | 2694 case Bytecodes::_fast_lputfield: |
2695 NOT_LP64(__ movptr(hi, rdx)); | |
2696 __ movptr(lo, rax); | |
2697 break; | |
0 | 2698 case Bytecodes::_fast_fputfield: __ fstp_s(lo); break; |
2699 case Bytecodes::_fast_dputfield: __ fstp_d(lo); break; | |
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2700 case Bytecodes::_fast_aputfield: { |
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2701 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
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2702 break; |
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2703 } |
0 | 2704 default: |
2705 ShouldNotReachHere(); | |
2706 } | |
2707 | |
2708 Label done; | |
304 | 2709 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | |
2710 Assembler::StoreStore)); | |
342
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2711 // Barriers are so large that short branch doesn't reach! |
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2712 __ jmp(done); |
0 | 2713 |
2714 // Same code as above, but don't need rdx to test for volatile. | |
2715 __ bind(notVolatile); | |
2716 | |
304 | 2717 if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx); |
0 | 2718 |
2719 // Get object from stack | |
2720 pop_and_check_object(rcx); | |
2721 | |
2722 // access field | |
2723 switch (bytecode()) { | |
2724 case Bytecodes::_fast_bputfield: __ movb(lo, rax); break; | |
2725 case Bytecodes::_fast_sputfield: // fall through | |
2726 case Bytecodes::_fast_cputfield: __ movw(lo, rax); break; | |
2727 case Bytecodes::_fast_iputfield: __ movl(lo, rax); break; | |
304 | 2728 case Bytecodes::_fast_lputfield: |
2729 NOT_LP64(__ movptr(hi, rdx)); | |
2730 __ movptr(lo, rax); | |
2731 break; | |
0 | 2732 case Bytecodes::_fast_fputfield: __ fstp_s(lo); break; |
2733 case Bytecodes::_fast_dputfield: __ fstp_d(lo); break; | |
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2734 case Bytecodes::_fast_aputfield: { |
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2735 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
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2736 break; |
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2737 } |
0 | 2738 default: |
2739 ShouldNotReachHere(); | |
2740 } | |
2741 __ bind(done); | |
2742 } | |
2743 | |
2744 | |
2745 void TemplateTable::fast_accessfield(TosState state) { | |
2746 transition(atos, state); | |
2747 | |
2748 // do the JVMTI work here to avoid disturbing the register state below | |
2749 if (JvmtiExport::can_post_field_access()) { | |
2750 // Check to see if a field access watch has been set before we take | |
2751 // the time to call into the VM. | |
2752 Label L1; | |
2753 __ mov32(rcx, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2754 __ testl(rcx,rcx); | |
2755 __ jcc(Assembler::zero, L1); | |
2756 // access constant pool cache entry | |
2757 __ get_cache_entry_pointer_at_bcp(rcx, rdx, 1); | |
2758 __ push_ptr(rax); // save object pointer before call_VM() clobbers it | |
2759 __ verify_oop(rax); | |
2760 // rax,: object pointer copied above | |
2761 // rcx: cache entry pointer | |
2762 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), rax, rcx); | |
2763 __ pop_ptr(rax); // restore object pointer | |
2764 __ bind(L1); | |
2765 } | |
2766 | |
2767 // access constant pool cache | |
2768 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2769 // replace index with field offset from cache entry | |
304 | 2770 __ movptr(rbx, Address(rcx, |
2771 rbx, | |
2772 Address::times_ptr, | |
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2773 in_bytes(ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::f2_offset()))); |
0 | 2774 |
2775 | |
2776 // rax,: object | |
2777 __ verify_oop(rax); | |
2778 __ null_check(rax); | |
2779 // field addresses | |
2780 const Address lo = Address(rax, rbx, Address::times_1, 0*wordSize); | |
2781 const Address hi = Address(rax, rbx, Address::times_1, 1*wordSize); | |
2782 | |
2783 // access field | |
2784 switch (bytecode()) { | |
304 | 2785 case Bytecodes::_fast_bgetfield: __ movsbl(rax, lo ); break; |
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2786 case Bytecodes::_fast_sgetfield: __ load_signed_short(rax, lo ); break; |
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2787 case Bytecodes::_fast_cgetfield: __ load_unsigned_short(rax, lo ); break; |
0 | 2788 case Bytecodes::_fast_igetfield: __ movl(rax, lo); break; |
2789 case Bytecodes::_fast_lgetfield: __ stop("should not be rewritten"); break; | |
2790 case Bytecodes::_fast_fgetfield: __ fld_s(lo); break; | |
2791 case Bytecodes::_fast_dgetfield: __ fld_d(lo); break; | |
304 | 2792 case Bytecodes::_fast_agetfield: __ movptr(rax, lo); __ verify_oop(rax); break; |
0 | 2793 default: |
2794 ShouldNotReachHere(); | |
2795 } | |
2796 | |
2797 // Doug Lea believes this is not needed with current Sparcs(TSO) and Intel(PSO) | |
2798 // volatile_barrier( ); | |
2799 } | |
2800 | |
2801 void TemplateTable::fast_xaccess(TosState state) { | |
2802 transition(vtos, state); | |
2803 // get receiver | |
304 | 2804 __ movptr(rax, aaddress(0)); |
0 | 2805 // access constant pool cache |
2806 __ get_cache_and_index_at_bcp(rcx, rdx, 2); | |
304 | 2807 __ movptr(rbx, Address(rcx, |
2808 rdx, | |
2809 Address::times_ptr, | |
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2810 in_bytes(ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::f2_offset()))); |
0 | 2811 // make sure exception is reported in correct bcp range (getfield is next instruction) |
2812 __ increment(rsi); | |
2813 __ null_check(rax); | |
2814 const Address lo = Address(rax, rbx, Address::times_1, 0*wordSize); | |
2815 if (state == itos) { | |
2816 __ movl(rax, lo); | |
2817 } else if (state == atos) { | |
304 | 2818 __ movptr(rax, lo); |
0 | 2819 __ verify_oop(rax); |
2820 } else if (state == ftos) { | |
2821 __ fld_s(lo); | |
2822 } else { | |
2823 ShouldNotReachHere(); | |
2824 } | |
2825 __ decrement(rsi); | |
2826 } | |
2827 | |
2828 | |
2829 | |
2830 //---------------------------------------------------------------------------------------------------- | |
2831 // Calls | |
2832 | |
2833 void TemplateTable::count_calls(Register method, Register temp) { | |
2834 // implemented elsewhere | |
2835 ShouldNotReachHere(); | |
2836 } | |
2837 | |
2838 | |
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2839 void TemplateTable::prepare_invoke(int byte_no, |
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2840 Register method, // linked method (or i-klass) |
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2841 Register index, // itable index, MethodType, etc. |
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2842 Register recv, // if caller wants to see it |
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2843 Register flags // if caller wants to test it |
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2844 ) { |
0 | 2845 // determine flags |
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2846 const Bytecodes::Code code = bytecode(); |
0 | 2847 const bool is_invokeinterface = code == Bytecodes::_invokeinterface; |
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2848 const bool is_invokedynamic = code == Bytecodes::_invokedynamic; |
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2849 const bool is_invokehandle = code == Bytecodes::_invokehandle; |
0 | 2850 const bool is_invokevirtual = code == Bytecodes::_invokevirtual; |
2851 const bool is_invokespecial = code == Bytecodes::_invokespecial; | |
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2852 const bool load_receiver = (recv != noreg); |
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2853 const bool save_flags = (flags != noreg); |
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2854 assert(load_receiver == (code != Bytecodes::_invokestatic && code != Bytecodes::_invokedynamic), ""); |
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2855 assert(save_flags == (is_invokeinterface || is_invokevirtual), "need flags for vfinal"); |
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2856 assert(flags == noreg || flags == rdx, ""); |
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2857 assert(recv == noreg || recv == rcx, ""); |
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2858 |
0 | 2859 // setup registers & access constant pool cache |
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2860 if (recv == noreg) recv = rcx; |
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2861 if (flags == noreg) flags = rdx; |
0 | 2862 assert_different_registers(method, index, recv, flags); |
2863 | |
2864 // save 'interpreter return address' | |
2865 __ save_bcp(); | |
2866 | |
1565 | 2867 load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual, false, is_invokedynamic); |
0 | 2868 |
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2869 // maybe push appendix to arguments (just before return address) |
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2870 if (is_invokedynamic || is_invokehandle) { |
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2871 Label L_no_push; |
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2872 __ testl(flags, (1 << ConstantPoolCacheEntry::has_appendix_shift)); |
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2873 __ jccb(Assembler::zero, L_no_push); |
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2874 // Push the appendix as a trailing parameter. |
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2875 // This must be done before we get the receiver, |
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2876 // since the parameter_size includes it. |
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2877 __ push(rbx); |
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2878 __ mov(rbx, index); |
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2879 assert(ConstantPoolCacheEntry::_indy_resolved_references_appendix_offset == 0, "appendix expected at index+0"); |
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2880 __ load_resolved_reference_at_index(index, rbx); |
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2881 __ pop(rbx); |
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2882 __ push(index); // push appendix (MethodType, CallSite, etc.) |
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2883 __ bind(L_no_push); |
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2884 } |
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2885 |
0 | 2886 // load receiver if needed (note: no return address pushed yet) |
2887 if (load_receiver) { | |
2888 __ movl(recv, flags); | |
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2889 __ andl(recv, ConstantPoolCacheEntry::parameter_size_mask); |
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2890 const int no_return_pc_pushed_yet = -1; // argument slot correction before we push return address |
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2891 const int receiver_is_at_end = -1; // back off one slot to get receiver |
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2892 Address recv_addr = __ argument_address(recv, no_return_pc_pushed_yet + receiver_is_at_end); |
1304 | 2893 __ movptr(recv, recv_addr); |
2894 __ verify_oop(recv); | |
0 | 2895 } |
2896 | |
2897 if (save_flags) { | |
304 | 2898 __ mov(rsi, flags); |
0 | 2899 } |
2900 | |
2901 // compute return type | |
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2902 __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift); |
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2903 // Make sure we don't need to mask flags after the above shift |
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2904 ConstantPoolCacheEntry::verify_tos_state_shift(); |
0 | 2905 // load return address |
304 | 2906 { |
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2907 const address table_addr = (is_invokeinterface || is_invokedynamic) ? |
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2908 (address)Interpreter::return_5_addrs_by_index_table() : |
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2909 (address)Interpreter::return_3_addrs_by_index_table(); |
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2910 ExternalAddress table(table_addr); |
304 | 2911 __ movptr(flags, ArrayAddress(table, Address(noreg, flags, Address::times_ptr))); |
0 | 2912 } |
2913 | |
2914 // push return address | |
304 | 2915 __ push(flags); |
0 | 2916 |
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2917 // Restore flags value from the constant pool cache, and restore rsi |
0 | 2918 // for later null checks. rsi is the bytecode pointer |
2919 if (save_flags) { | |
304 | 2920 __ mov(flags, rsi); |
0 | 2921 __ restore_bcp(); |
2922 } | |
2923 } | |
2924 | |
2925 | |
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2926 void TemplateTable::invokevirtual_helper(Register index, |
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2927 Register recv, |
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2928 Register flags) { |
0 | 2929 // Uses temporary registers rax, rdx |
2930 assert_different_registers(index, recv, rax, rdx); | |
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2931 assert(index == rbx, ""); |
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2932 assert(recv == rcx, ""); |
0 | 2933 |
2934 // Test for an invoke of a final method | |
2935 Label notFinal; | |
2936 __ movl(rax, flags); | |
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2937 __ andl(rax, (1 << ConstantPoolCacheEntry::is_vfinal_shift)); |
0 | 2938 __ jcc(Assembler::zero, notFinal); |
2939 | |
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2940 const Register method = index; // method must be rbx |
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2941 assert(method == rbx, |
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2942 "Method* must be rbx for interpreter calling convention"); |
0 | 2943 |
2944 // do the call - the index is actually the method to call | |
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2945 // that is, f2 is a vtable index if !is_vfinal, else f2 is a Method* |
0 | 2946 |
2947 // It's final, need a null check here! | |
2948 __ null_check(recv); | |
2949 | |
2950 // profile this call | |
2951 __ profile_final_call(rax); | |
2952 | |
2953 __ jump_from_interpreted(method, rax); | |
2954 | |
2955 __ bind(notFinal); | |
2956 | |
2957 // get receiver klass | |
2958 __ null_check(recv, oopDesc::klass_offset_in_bytes()); | |
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2959 __ load_klass(rax, recv); |
0 | 2960 |
2961 // profile this call | |
2962 __ profile_virtual_call(rax, rdi, rdx); | |
2963 | |
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2964 // get target Method* & entry point |
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2965 __ lookup_virtual_method(rax, index, method); |
0 | 2966 __ jump_from_interpreted(method, rdx); |
2967 } | |
2968 | |
2969 | |
2970 void TemplateTable::invokevirtual(int byte_no) { | |
2971 transition(vtos, vtos); | |
1565 | 2972 assert(byte_no == f2_byte, "use this argument"); |
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2973 prepare_invoke(byte_no, |
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2974 rbx, // method or vtable index |
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2975 noreg, // unused itable index |
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2976 rcx, rdx); // recv, flags |
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2977 |
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2978 // rbx: index |
0 | 2979 // rcx: receiver |
2980 // rdx: flags | |
2981 | |
2982 invokevirtual_helper(rbx, rcx, rdx); | |
2983 } | |
2984 | |
2985 | |
2986 void TemplateTable::invokespecial(int byte_no) { | |
2987 transition(vtos, vtos); | |
1565 | 2988 assert(byte_no == f1_byte, "use this argument"); |
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2989 prepare_invoke(byte_no, rbx, noreg, // get f1 Method* |
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2990 rcx); // get receiver also for null check |
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2991 __ verify_oop(rcx); |
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2992 __ null_check(rcx); |
0 | 2993 // do the call |
2994 __ profile_call(rax); | |
2995 __ jump_from_interpreted(rbx, rax); | |
2996 } | |
2997 | |
2998 | |
2999 void TemplateTable::invokestatic(int byte_no) { | |
3000 transition(vtos, vtos); | |
1565 | 3001 assert(byte_no == f1_byte, "use this argument"); |
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3002 prepare_invoke(byte_no, rbx); // get f1 Method* |
0 | 3003 // do the call |
3004 __ profile_call(rax); | |
3005 __ jump_from_interpreted(rbx, rax); | |
3006 } | |
3007 | |
3008 | |
3009 void TemplateTable::fast_invokevfinal(int byte_no) { | |
3010 transition(vtos, vtos); | |
1565 | 3011 assert(byte_no == f2_byte, "use this argument"); |
0 | 3012 __ stop("fast_invokevfinal not used on x86"); |
3013 } | |
3014 | |
3015 | |
3016 void TemplateTable::invokeinterface(int byte_no) { | |
3017 transition(vtos, vtos); | |
1565 | 3018 assert(byte_no == f1_byte, "use this argument"); |
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3019 prepare_invoke(byte_no, rax, rbx, // get f1 Klass*, f2 itable index |
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3020 rcx, rdx); // recv, flags |
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3021 |
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3022 // rax: interface klass (from f1) |
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3023 // rbx: itable index (from f2) |
0 | 3024 // rcx: receiver |
3025 // rdx: flags | |
3026 | |
3027 // Special case of invokeinterface called for virtual method of | |
3028 // java.lang.Object. See cpCacheOop.cpp for details. | |
3029 // This code isn't produced by javac, but could be produced by | |
3030 // another compliant java compiler. | |
3031 Label notMethod; | |
3032 __ movl(rdi, rdx); | |
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3033 __ andl(rdi, (1 << ConstantPoolCacheEntry::is_forced_virtual_shift)); |
0 | 3034 __ jcc(Assembler::zero, notMethod); |
3035 | |
3036 invokevirtual_helper(rbx, rcx, rdx); | |
3037 __ bind(notMethod); | |
3038 | |
3039 // Get receiver klass into rdx - also a null check | |
3040 __ restore_locals(); // restore rdi | |
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3041 __ null_check(rcx, oopDesc::klass_offset_in_bytes()); |
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3042 __ load_klass(rdx, rcx); |
0 | 3043 |
3044 // profile this call | |
3045 __ profile_virtual_call(rdx, rsi, rdi); | |
3046 | |
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3047 Label no_such_interface, no_such_method; |
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3048 |
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3049 __ lookup_interface_method(// inputs: rec. class, interface, itable index |
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3050 rdx, rax, rbx, |
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3051 // outputs: method, scan temp. reg |
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3052 rbx, rsi, |
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3053 no_such_interface); |
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3054 |
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3055 // rbx: Method* to call |
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3056 // rcx: receiver |
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3057 // Check for abstract method error |
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3058 // Note: This should be done more efficiently via a throw_abstract_method_error |
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3059 // interpreter entry point and a conditional jump to it in case of a null |
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3060 // method. |
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3061 __ testptr(rbx, rbx); |
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3062 __ jcc(Assembler::zero, no_such_method); |
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3063 |
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3064 // do the call |
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3065 // rcx: receiver |
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3066 // rbx,: Method* |
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3067 __ jump_from_interpreted(rbx, rdx); |
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3068 __ should_not_reach_here(); |
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3069 |
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3070 // exception handling code follows... |
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3071 // note: must restore interpreter registers to canonical |
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3072 // state for exception handling to work correctly! |
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3073 |
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3074 __ bind(no_such_method); |
0 | 3075 // throw exception |
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3076 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
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3077 __ restore_bcp(); // rsi must be correct for exception handler (was destroyed) |
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3078 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
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3079 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError)); |
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3080 // the call_VM checks for exception, so we should never return here. |
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3081 __ should_not_reach_here(); |
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3082 |
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3083 __ bind(no_such_interface); |
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3084 // throw exception |
304 | 3085 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
0 | 3086 __ restore_bcp(); // rsi must be correct for exception handler (was destroyed) |
3087 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) | |
3088 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
3089 InterpreterRuntime::throw_IncompatibleClassChangeError)); | |
3090 // the call_VM checks for exception, so we should never return here. | |
3091 __ should_not_reach_here(); | |
3092 } | |
3093 | |
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3094 void TemplateTable::invokehandle(int byte_no) { |
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3095 transition(vtos, vtos); |
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3096 assert(byte_no == f1_byte, "use this argument"); |
6822
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3097 const Register rbx_method = rbx; |
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3098 const Register rax_mtype = rax; |
6266
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3099 const Register rcx_recv = rcx; |
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3100 const Register rdx_flags = rdx; |
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|
3101 |
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|
3102 if (!EnableInvokeDynamic) { |
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|
3103 // rewriter does not generate this bytecode |
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|
3104 __ should_not_reach_here(); |
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|
3105 return; |
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|
3106 } |
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|
3107 |
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3108 prepare_invoke(byte_no, rbx_method, rax_mtype, rcx_recv); |
6740
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7196681: NPG: Some JSR 292 tests crash in Windows exception handler
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3109 __ verify_method_ptr(rbx_method); |
6266
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3110 __ verify_oop(rcx_recv); |
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3111 __ null_check(rcx_recv); |
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3112 |
6822
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3113 // rax: MethodType object (from cpool->resolved_references[f1], if necessary) |
f6b0eb4e44cf
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3114 // rbx: MH.invokeExact_MT method (from f2) |
f6b0eb4e44cf
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3115 |
6266
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|
3116 // Note: rax_mtype is already pushed (if necessary) by prepare_invoke |
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|
3117 |
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|
3118 // FIXME: profile the LambdaForm also |
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|
3119 __ profile_final_call(rax); |
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|
3120 |
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|
3121 __ jump_from_interpreted(rbx_method, rdx); |
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|
3122 } |
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|
3123 |
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|
3124 |
726
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6655646: dynamic languages need dynamically linked call sites
jrose
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diff
changeset
|
3125 void TemplateTable::invokedynamic(int byte_no) { |
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|
3126 transition(vtos, vtos); |
6725
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3127 assert(byte_no == f1_byte, "use this argument"); |
726
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diff
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|
3128 |
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6655646: dynamic languages need dynamically linked call sites
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diff
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|
3129 if (!EnableInvokeDynamic) { |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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diff
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|
3130 // We should not encounter this bytecode if !EnableInvokeDynamic. |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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diff
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|
3131 // 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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|
3132 // this will stop the thread in a reasonable way, without crashing the JVM. |
be93aad57795
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|
3133 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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diff
changeset
|
3134 InterpreterRuntime::throw_IncompatibleClassChangeError)); |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
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diff
changeset
|
3135 // the call_VM checks for exception, so we should never return here. |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
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diff
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|
3136 __ should_not_reach_here(); |
be93aad57795
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diff
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|
3137 return; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
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diff
changeset
|
3138 } |
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6655646: dynamic languages need dynamically linked call sites
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diff
changeset
|
3139 |
6266
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|
3140 const Register rbx_method = rbx; |
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|
3141 const Register rax_callsite = rax; |
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|
3142 |
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|
3143 prepare_invoke(byte_no, rbx_method, rax_callsite); |
1d7922586cf6
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|
3144 |
6822
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|
3145 // rax: CallSite object (from cpool->resolved_references[f1]) |
6266
1d7922586cf6
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diff
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|
3146 // rbx: MH.linkToCallSite method (from f2) |
1d7922586cf6
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|
3147 |
1d7922586cf6
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diff
changeset
|
3148 // Note: rax_callsite is already pushed by prepare_invoke |
1846 | 3149 |
3279
08ccee2c4dbf
6993078: JSR 292 too many pushes: Lesp points into register window
twisti
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3275
diff
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|
3150 // %%% should make a type profile for any invokedynamic that takes a ref argument |
08ccee2c4dbf
6993078: JSR 292 too many pushes: Lesp points into register window
twisti
parents:
3275
diff
changeset
|
3151 // profile this call |
08ccee2c4dbf
6993078: JSR 292 too many pushes: Lesp points into register window
twisti
parents:
3275
diff
changeset
|
3152 __ profile_call(rsi); |
08ccee2c4dbf
6993078: JSR 292 too many pushes: Lesp points into register window
twisti
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3275
diff
changeset
|
3153 |
08ccee2c4dbf
6993078: JSR 292 too many pushes: Lesp points into register window
twisti
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3275
diff
changeset
|
3154 __ verify_oop(rax_callsite); |
6266
1d7922586cf6
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diff
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|
3155 |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
3156 __ jump_from_interpreted(rbx_method, rdx); |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
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628
diff
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|
3157 } |
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6655646: dynamic languages need dynamically linked call sites
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diff
changeset
|
3158 |
0 | 3159 //---------------------------------------------------------------------------------------------------- |
3160 // Allocation | |
3161 | |
3162 void TemplateTable::_new() { | |
3163 transition(vtos, atos); | |
3164 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3165 Label slow_case; | |
1681
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bobv
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1602
diff
changeset
|
3166 Label slow_case_no_pop; |
0 | 3167 Label done; |
3168 Label initialize_header; | |
3169 Label initialize_object; // including clearing the fields | |
3170 Label allocate_shared; | |
3171 | |
3172 __ get_cpool_and_tags(rcx, rax); | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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|
3173 |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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1602
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changeset
|
3174 // Make sure the class we're about to instantiate has been resolved. |
6725
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|
3175 // This is done before loading InstanceKlass to be consistent with the order |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
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|
3176 // how Constant Pool is updated (see ConstantPool::klass_at_put) |
da91efe96a93
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|
3177 const int tags_offset = Array<u1>::base_offset_in_bytes(); |
1681
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1602
diff
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|
3178 __ cmpb(Address(rax, rdx, Address::times_1, tags_offset), JVM_CONSTANT_Class); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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1602
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|
3179 __ jcc(Assembler::notEqual, slow_case_no_pop); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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1602
diff
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|
3180 |
6725
da91efe96a93
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|
3181 // get InstanceKlass |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
3182 __ movptr(rcx, Address(rcx, rdx, Address::times_ptr, sizeof(ConstantPool))); |
304 | 3183 __ push(rcx); // save the contexts of klass for initializing the header |
0 | 3184 |
3185 // make sure klass is initialized & doesn't have finalizer | |
3186 // make sure klass is fully initialized | |
6725
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|
3187 __ cmpb(Address(rcx, InstanceKlass::init_state_offset()), InstanceKlass::fully_initialized); |
0 | 3188 __ jcc(Assembler::notEqual, slow_case); |
3189 | |
6725
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coleenp
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|
3190 // get instance_size in InstanceKlass (scaled to a count of bytes) |
4762
069ab3f976d3
7118863: Move sizeof(klassOopDesc) into the *Klass::*_offset_in_bytes() functions
stefank
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3852
diff
changeset
|
3191 __ movl(rdx, Address(rcx, Klass::layout_helper_offset())); |
0 | 3192 // test to see if it has a finalizer or is malformed in some way |
3193 __ testl(rdx, Klass::_lh_instance_slow_path_bit); | |
3194 __ jcc(Assembler::notZero, slow_case); | |
3195 | |
3196 // | |
3197 // Allocate the instance | |
3198 // 1) Try to allocate in the TLAB | |
3199 // 2) if fail and the object is large allocate in the shared Eden | |
3200 // 3) if the above fails (or is not applicable), go to a slow case | |
3201 // (creates a new TLAB, etc.) | |
3202 | |
3203 const bool allow_shared_alloc = | |
3204 Universe::heap()->supports_inline_contig_alloc() && !CMSIncrementalMode; | |
3205 | |
2100
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
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diff
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|
3206 const Register thread = rcx; |
b1a2afa37ec4
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diff
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|
3207 if (UseTLAB || allow_shared_alloc) { |
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents:
1972
diff
changeset
|
3208 __ get_thread(thread); |
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
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diff
changeset
|
3209 } |
b1a2afa37ec4
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diff
changeset
|
3210 |
0 | 3211 if (UseTLAB) { |
304 | 3212 __ movptr(rax, Address(thread, in_bytes(JavaThread::tlab_top_offset()))); |
3213 __ lea(rbx, Address(rax, rdx, Address::times_1)); | |
3214 __ cmpptr(rbx, Address(thread, in_bytes(JavaThread::tlab_end_offset()))); | |
0 | 3215 __ jcc(Assembler::above, allow_shared_alloc ? allocate_shared : slow_case); |
304 | 3216 __ movptr(Address(thread, in_bytes(JavaThread::tlab_top_offset())), rbx); |
0 | 3217 if (ZeroTLAB) { |
3218 // the fields have been already cleared | |
3219 __ jmp(initialize_header); | |
3220 } else { | |
3221 // initialize both the header and fields | |
3222 __ jmp(initialize_object); | |
3223 } | |
3224 } | |
3225 | |
3226 // Allocation in the shared Eden, if allowed. | |
3227 // | |
3228 // rdx: instance size in bytes | |
3229 if (allow_shared_alloc) { | |
3230 __ bind(allocate_shared); | |
3231 | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
107
diff
changeset
|
3232 ExternalAddress heap_top((address)Universe::heap()->top_addr()); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
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|
3233 |
0 | 3234 Label retry; |
3235 __ bind(retry); | |
304 | 3236 __ movptr(rax, heap_top); |
3237 __ lea(rbx, Address(rax, rdx, Address::times_1)); | |
3238 __ cmpptr(rbx, ExternalAddress((address)Universe::heap()->end_addr())); | |
0 | 3239 __ jcc(Assembler::above, slow_case); |
3240 | |
3241 // Compare rax, with the top addr, and if still equal, store the new | |
3242 // top addr in rbx, at the address of the top addr pointer. Sets ZF if was | |
3243 // equal, and clears it otherwise. Use lock prefix for atomicity on MPs. | |
3244 // | |
3245 // rax,: object begin | |
3246 // rbx,: object end | |
3247 // rdx: instance size in bytes | |
304 | 3248 __ locked_cmpxchgptr(rbx, heap_top); |
0 | 3249 |
3250 // if someone beat us on the allocation, try again, otherwise continue | |
3251 __ jcc(Assembler::notEqual, retry); | |
2100
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7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
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|
3252 |
b1a2afa37ec4
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diff
changeset
|
3253 __ incr_allocated_bytes(thread, rdx, 0); |
0 | 3254 } |
3255 | |
3256 if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) { | |
3257 // The object is initialized before the header. If the object size is | |
3258 // zero, go directly to the header initialization. | |
3259 __ bind(initialize_object); | |
3260 __ decrement(rdx, sizeof(oopDesc)); | |
3261 __ jcc(Assembler::zero, initialize_header); | |
3262 | |
2100
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diff
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|
3263 // Initialize topmost object field, divide rdx by 8, check if odd and |
b1a2afa37ec4
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diff
changeset
|
3264 // test if zero. |
0 | 3265 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) |
3266 __ shrl(rdx, LogBytesPerLong); // divide by 2*oopSize and set carry flag if odd | |
3267 | |
2100
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diff
changeset
|
3268 // rdx must have been multiple of 8 |
0 | 3269 #ifdef ASSERT |
3270 // make sure rdx was multiple of 8 | |
3271 Label L; | |
3272 // Ignore partial flag stall after shrl() since it is debug VM | |
3273 __ jccb(Assembler::carryClear, L); | |
3274 __ stop("object size is not multiple of 2 - adjust this code"); | |
3275 __ bind(L); | |
3276 // rdx must be > 0, no extra check needed here | |
3277 #endif | |
3278 | |
3279 // initialize remaining object fields: rdx was a multiple of 8 | |
3280 { Label loop; | |
3281 __ bind(loop); | |
304 | 3282 __ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 1*oopSize), rcx); |
3283 NOT_LP64(__ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 2*oopSize), rcx)); | |
0 | 3284 __ decrement(rdx); |
3285 __ jcc(Assembler::notZero, loop); | |
3286 } | |
3287 | |
3288 // initialize object header only. | |
3289 __ bind(initialize_header); | |
3290 if (UseBiasedLocking) { | |
304 | 3291 __ pop(rcx); // get saved klass back in the register. |
4762
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stefank
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diff
changeset
|
3292 __ movptr(rbx, Address(rcx, Klass::prototype_header_offset())); |
304 | 3293 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()), rbx); |
0 | 3294 } else { |
304 | 3295 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()), |
3296 (int32_t)markOopDesc::prototype()); // header | |
3297 __ pop(rcx); // get saved klass back in the register. | |
0 | 3298 } |
3275
bbe95b4337f1
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twisti
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2416
diff
changeset
|
3299 __ store_klass(rax, rcx); // klass |
0 | 3300 |
3301 { | |
3302 SkipIfEqual skip_if(_masm, &DTraceAllocProbes, 0); | |
3303 // Trigger dtrace event for fastpath | |
3304 __ push(atos); | |
3305 __ call_VM_leaf( | |
3306 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), rax); | |
3307 __ pop(atos); | |
3308 } | |
3309 | |
3310 __ jmp(done); | |
3311 } | |
3312 | |
3313 // slow case | |
3314 __ bind(slow_case); | |
304 | 3315 __ pop(rcx); // restore stack pointer to what it was when we came in. |
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3316 __ bind(slow_case_no_pop); |
0 | 3317 __ get_constant_pool(rax); |
3318 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3319 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), rax, rdx); | |
3320 | |
3321 // continue | |
3322 __ bind(done); | |
3323 } | |
3324 | |
3325 | |
3326 void TemplateTable::newarray() { | |
3327 transition(itos, atos); | |
3328 __ push_i(rax); // make sure everything is on the stack | |
3329 __ load_unsigned_byte(rdx, at_bcp(1)); | |
3330 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray), rdx, rax); | |
3331 __ pop_i(rdx); // discard size | |
3332 } | |
3333 | |
3334 | |
3335 void TemplateTable::anewarray() { | |
3336 transition(itos, atos); | |
3337 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3338 __ get_constant_pool(rcx); | |
3339 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray), rcx, rdx, rax); | |
3340 } | |
3341 | |
3342 | |
3343 void TemplateTable::arraylength() { | |
3344 transition(atos, itos); | |
3345 __ null_check(rax, arrayOopDesc::length_offset_in_bytes()); | |
3346 __ movl(rax, Address(rax, arrayOopDesc::length_offset_in_bytes())); | |
3347 } | |
3348 | |
3349 | |
3350 void TemplateTable::checkcast() { | |
3351 transition(atos, atos); | |
3352 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3353 __ testptr(rax, rax); // Object is in EAX |
0 | 3354 __ jcc(Assembler::zero, is_null); |
3355 | |
3356 // Get cpool & tags index | |
3357 __ get_cpool_and_tags(rcx, rdx); // ECX=cpool, EDX=tags array | |
3358 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // EBX=index | |
3359 // See if bytecode has already been quicked | |
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3360 __ cmpb(Address(rdx, rbx, Address::times_1, Array<u1>::base_offset_in_bytes()), JVM_CONSTANT_Class); |
0 | 3361 __ jcc(Assembler::equal, quicked); |
3362 | |
3363 __ push(atos); | |
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3364 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) ); |
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3365 // vm_result_2 has metadata result |
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3366 // borrow rdi from locals |
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3367 __ get_thread(rdi); |
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3368 __ get_vm_result_2(rax, rdi); |
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3369 __ restore_locals(); |
0 | 3370 __ pop_ptr(rdx); |
3371 __ jmpb(resolved); | |
3372 | |
3373 // Get superklass in EAX and subklass in EBX | |
3374 __ bind(quicked); | |
304 | 3375 __ mov(rdx, rax); // Save object in EDX; EAX needed for subtype check |
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3376 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, sizeof(ConstantPool))); |
0 | 3377 |
3378 __ bind(resolved); | |
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3379 __ load_klass(rbx, rdx); |
0 | 3380 |
3381 // Generate subtype check. Blows ECX. Resets EDI. Object in EDX. | |
3382 // Superklass in EAX. Subklass in EBX. | |
3383 __ gen_subtype_check( rbx, ok_is_subtype ); | |
3384 | |
3385 // Come here on failure | |
304 | 3386 __ push(rdx); |
0 | 3387 // object is at TOS |
3388 __ jump(ExternalAddress(Interpreter::_throw_ClassCastException_entry)); | |
3389 | |
3390 // Come here on success | |
3391 __ bind(ok_is_subtype); | |
304 | 3392 __ mov(rax,rdx); // Restore object in EDX |
0 | 3393 |
3394 // Collect counts on whether this check-cast sees NULLs a lot or not. | |
3395 if (ProfileInterpreter) { | |
3396 __ jmp(done); | |
3397 __ bind(is_null); | |
3398 __ profile_null_seen(rcx); | |
3399 } else { | |
3400 __ bind(is_null); // same as 'done' | |
3401 } | |
3402 __ bind(done); | |
3403 } | |
3404 | |
3405 | |
3406 void TemplateTable::instanceof() { | |
3407 transition(atos, itos); | |
3408 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3409 __ testptr(rax, rax); |
0 | 3410 __ jcc(Assembler::zero, is_null); |
3411 | |
3412 // Get cpool & tags index | |
3413 __ get_cpool_and_tags(rcx, rdx); // ECX=cpool, EDX=tags array | |
3414 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // EBX=index | |
3415 // See if bytecode has already been quicked | |
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3416 __ cmpb(Address(rdx, rbx, Address::times_1, Array<u1>::base_offset_in_bytes()), JVM_CONSTANT_Class); |
0 | 3417 __ jcc(Assembler::equal, quicked); |
3418 | |
3419 __ push(atos); | |
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3420 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) ); |
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3421 // vm_result_2 has metadata result |
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3422 // borrow rdi from locals |
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3423 __ get_thread(rdi); |
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3424 __ get_vm_result_2(rax, rdi); |
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3425 __ restore_locals(); |
0 | 3426 __ pop_ptr(rdx); |
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3427 __ load_klass(rdx, rdx); |
0 | 3428 __ jmp(resolved); |
3429 | |
3430 // Get superklass in EAX and subklass in EDX | |
3431 __ bind(quicked); | |
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3432 __ load_klass(rdx, rax); |
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3433 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, sizeof(ConstantPool))); |
0 | 3434 |
3435 __ bind(resolved); | |
3436 | |
3437 // Generate subtype check. Blows ECX. Resets EDI. | |
3438 // Superklass in EAX. Subklass in EDX. | |
3439 __ gen_subtype_check( rdx, ok_is_subtype ); | |
3440 | |
3441 // Come here on failure | |
3442 __ xorl(rax,rax); | |
3443 __ jmpb(done); | |
3444 // Come here on success | |
3445 __ bind(ok_is_subtype); | |
3446 __ movl(rax, 1); | |
3447 | |
3448 // Collect counts on whether this test sees NULLs a lot or not. | |
3449 if (ProfileInterpreter) { | |
3450 __ jmp(done); | |
3451 __ bind(is_null); | |
3452 __ profile_null_seen(rcx); | |
3453 } else { | |
3454 __ bind(is_null); // same as 'done' | |
3455 } | |
3456 __ bind(done); | |
3457 // rax, = 0: obj == NULL or obj is not an instanceof the specified klass | |
3458 // rax, = 1: obj != NULL and obj is an instanceof the specified klass | |
3459 } | |
3460 | |
3461 | |
3462 //---------------------------------------------------------------------------------------------------- | |
3463 // Breakpoints | |
3464 void TemplateTable::_breakpoint() { | |
3465 | |
3466 // Note: We get here even if we are single stepping.. | |
3467 // jbug inists on setting breakpoints at every bytecode | |
3468 // even if we are in single step mode. | |
3469 | |
3470 transition(vtos, vtos); | |
3471 | |
3472 // get the unpatched byte code | |
3473 __ get_method(rcx); | |
3474 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::get_original_bytecode_at), rcx, rsi); | |
304 | 3475 __ mov(rbx, rax); |
0 | 3476 |
3477 // post the breakpoint event | |
3478 __ get_method(rcx); | |
3479 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint), rcx, rsi); | |
3480 | |
3481 // complete the execution of original bytecode | |
3482 __ dispatch_only_normal(vtos); | |
3483 } | |
3484 | |
3485 | |
3486 //---------------------------------------------------------------------------------------------------- | |
3487 // Exceptions | |
3488 | |
3489 void TemplateTable::athrow() { | |
3490 transition(atos, vtos); | |
3491 __ null_check(rax); | |
3492 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
3493 } | |
3494 | |
3495 | |
3496 //---------------------------------------------------------------------------------------------------- | |
3497 // Synchronization | |
3498 // | |
3499 // Note: monitorenter & exit are symmetric routines; which is reflected | |
3500 // in the assembly code structure as well | |
3501 // | |
3502 // Stack layout: | |
3503 // | |
3504 // [expressions ] <--- rsp = expression stack top | |
3505 // .. | |
3506 // [expressions ] | |
3507 // [monitor entry] <--- monitor block top = expression stack bot | |
3508 // .. | |
3509 // [monitor entry] | |
3510 // [frame data ] <--- monitor block bot | |
3511 // ... | |
3512 // [saved rbp, ] <--- rbp, | |
3513 | |
3514 | |
3515 void TemplateTable::monitorenter() { | |
3516 transition(atos, vtos); | |
3517 | |
3518 // check for NULL object | |
3519 __ null_check(rax); | |
3520 | |
3521 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3522 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3523 const int entry_size = ( frame::interpreter_frame_monitor_size() * wordSize); | |
3524 Label allocated; | |
3525 | |
3526 // initialize entry pointer | |
3527 __ xorl(rdx, rdx); // points to free slot or NULL | |
3528 | |
3529 // find a free slot in the monitor block (result in rdx) | |
3530 { Label entry, loop, exit; | |
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3531 __ movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry |
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3532 |
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3533 __ lea(rbx, monitor_block_bot); // points to word before bottom of monitor block |
0 | 3534 __ jmpb(entry); |
3535 | |
3536 __ bind(loop); | |
304 | 3537 __ cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used |
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3538 __ cmovptr(Assembler::equal, rdx, rcx); // if not used then remember entry in rdx |
304 | 3539 __ cmpptr(rax, Address(rcx, BasicObjectLock::obj_offset_in_bytes())); // check if current entry is for same object |
3540 __ jccb(Assembler::equal, exit); // if same object then stop searching | |
3541 __ addptr(rcx, entry_size); // otherwise advance to next entry | |
0 | 3542 __ bind(entry); |
304 | 3543 __ cmpptr(rcx, rbx); // check if bottom reached |
0 | 3544 __ jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
3545 __ bind(exit); | |
3546 } | |
3547 | |
304 | 3548 __ testptr(rdx, rdx); // check if a slot has been found |
3549 __ jccb(Assembler::notZero, allocated); // if found, continue with that one | |
0 | 3550 |
3551 // allocate one if there's no free slot | |
3552 { Label entry, loop; | |
3553 // 1. compute new pointers // rsp: old expression stack top | |
304 | 3554 __ movptr(rdx, monitor_block_bot); // rdx: old expression stack bottom |
3555 __ subptr(rsp, entry_size); // move expression stack top | |
3556 __ subptr(rdx, entry_size); // move expression stack bottom | |
3557 __ mov(rcx, rsp); // set start value for copy loop | |
3558 __ movptr(monitor_block_bot, rdx); // set new monitor block top | |
0 | 3559 __ jmp(entry); |
3560 // 2. move expression stack contents | |
3561 __ bind(loop); | |
304 | 3562 __ movptr(rbx, Address(rcx, entry_size)); // load expression stack word from old location |
3563 __ movptr(Address(rcx, 0), rbx); // and store it at new location | |
3564 __ addptr(rcx, wordSize); // advance to next word | |
0 | 3565 __ bind(entry); |
304 | 3566 __ cmpptr(rcx, rdx); // check if bottom reached |
0 | 3567 __ jcc(Assembler::notEqual, loop); // if not at bottom then copy next word |
3568 } | |
3569 | |
3570 // call run-time routine | |
3571 // rdx: points to monitor entry | |
3572 __ bind(allocated); | |
3573 | |
3574 // Increment bcp to point to the next bytecode, so exception handling for async. exceptions work correctly. | |
3575 // The object has already been poped from the stack, so the expression stack looks correct. | |
3576 __ increment(rsi); | |
3577 | |
304 | 3578 __ movptr(Address(rdx, BasicObjectLock::obj_offset_in_bytes()), rax); // store object |
0 | 3579 __ lock_object(rdx); |
3580 | |
3581 // check to make sure this monitor doesn't cause stack overflow after locking | |
3582 __ save_bcp(); // in case of exception | |
3583 __ generate_stack_overflow_check(0); | |
3584 | |
3585 // The bcp has already been incremented. Just need to dispatch to next instruction. | |
3586 __ dispatch_next(vtos); | |
3587 } | |
3588 | |
3589 | |
3590 void TemplateTable::monitorexit() { | |
3591 transition(atos, vtos); | |
3592 | |
3593 // check for NULL object | |
3594 __ null_check(rax); | |
3595 | |
3596 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3597 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3598 const int entry_size = ( frame::interpreter_frame_monitor_size() * wordSize); | |
3599 Label found; | |
3600 | |
3601 // find matching slot | |
3602 { Label entry, loop; | |
304 | 3603 __ movptr(rdx, monitor_block_top); // points to current entry, starting with top-most entry |
3604 __ lea(rbx, monitor_block_bot); // points to word before bottom of monitor block | |
0 | 3605 __ jmpb(entry); |
3606 | |
3607 __ bind(loop); | |
304 | 3608 __ cmpptr(rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); // check if current entry is for same object |
0 | 3609 __ jcc(Assembler::equal, found); // if same object then stop searching |
304 | 3610 __ addptr(rdx, entry_size); // otherwise advance to next entry |
0 | 3611 __ bind(entry); |
304 | 3612 __ cmpptr(rdx, rbx); // check if bottom reached |
0 | 3613 __ jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
3614 } | |
3615 | |
3616 // error handling. Unlocking was not block-structured | |
3617 Label end; | |
3618 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
3619 __ should_not_reach_here(); | |
3620 | |
3621 // call run-time routine | |
3622 // rcx: points to monitor entry | |
3623 __ bind(found); | |
3624 __ push_ptr(rax); // make sure object is on stack (contract with oopMaps) | |
3625 __ unlock_object(rdx); | |
3626 __ pop_ptr(rax); // discard object | |
3627 __ bind(end); | |
3628 } | |
3629 | |
3630 | |
3631 //---------------------------------------------------------------------------------------------------- | |
3632 // Wide instructions | |
3633 | |
3634 void TemplateTable::wide() { | |
3635 transition(vtos, vtos); | |
3636 __ load_unsigned_byte(rbx, at_bcp(1)); | |
304 | 3637 ExternalAddress wtable((address)Interpreter::_wentry_point); |
3638 __ jump(ArrayAddress(wtable, Address(noreg, rbx, Address::times_ptr))); | |
0 | 3639 // Note: the rsi increment step is part of the individual wide bytecode implementations |
3640 } | |
3641 | |
3642 | |
3643 //---------------------------------------------------------------------------------------------------- | |
3644 // Multi arrays | |
3645 | |
3646 void TemplateTable::multianewarray() { | |
3647 transition(vtos, atos); | |
3648 __ load_unsigned_byte(rax, at_bcp(3)); // get number of dimensions | |
3649 // last dim is on top of stack; we want address of first one: | |
3650 // first_addr = last_addr + (ndims - 1) * stackElementSize - 1*wordsize | |
3651 // the latter wordSize to point to the beginning of the array. | |
304 | 3652 __ lea( rax, Address(rsp, rax, Interpreter::stackElementScale(), -wordSize)); |
0 | 3653 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), rax); // pass in rax, |
3654 __ load_unsigned_byte(rbx, at_bcp(3)); | |
304 | 3655 __ lea(rsp, Address(rsp, rbx, Interpreter::stackElementScale())); // get rid of counts |
0 | 3656 } |
3657 | |
3658 #endif /* !CC_INTERP */ |