Mercurial > hg > graal-jvmci-8
annotate src/cpu/x86/vm/templateTable_x86_32.cpp @ 23758:ca5c97226d1c
Try to load the MDO on return from frequency_counter_overflow
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Wed, 21 Sep 2016 20:15:14 -0700 |
parents | 32b682649973 |
children | 0e0a4ebf09d7 |
rev | line source |
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0 | 1 /* |
23614 | 2 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
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26 #include "asm/macroAssembler.hpp" |
1972 | 27 #include "interpreter/interpreter.hpp" |
28 #include "interpreter/interpreterRuntime.hpp" | |
29 #include "interpreter/templateTable.hpp" | |
30 #include "memory/universe.inline.hpp" | |
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31 #include "oops/methodData.hpp" |
1972 | 32 #include "oops/objArrayKlass.hpp" |
33 #include "oops/oop.inline.hpp" | |
34 #include "prims/methodHandles.hpp" | |
35 #include "runtime/sharedRuntime.hpp" | |
36 #include "runtime/stubRoutines.hpp" | |
37 #include "runtime/synchronizer.hpp" | |
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38 #include "utilities/macros.hpp" |
0 | 39 |
40 #ifndef CC_INTERP | |
41 #define __ _masm-> | |
42 | |
43 //---------------------------------------------------------------------------------------------------- | |
44 // Platform-dependent initialization | |
45 | |
46 void TemplateTable::pd_initialize() { | |
47 // No i486 specific initialization | |
48 } | |
49 | |
50 //---------------------------------------------------------------------------------------------------- | |
51 // Address computation | |
52 | |
53 // local variables | |
54 static inline Address iaddress(int n) { | |
55 return Address(rdi, Interpreter::local_offset_in_bytes(n)); | |
56 } | |
57 | |
58 static inline Address laddress(int n) { return iaddress(n + 1); } | |
59 static inline Address haddress(int n) { return iaddress(n + 0); } | |
60 static inline Address faddress(int n) { return iaddress(n); } | |
61 static inline Address daddress(int n) { return laddress(n); } | |
62 static inline Address aaddress(int n) { return iaddress(n); } | |
63 | |
64 static inline Address iaddress(Register r) { | |
1506 | 65 return Address(rdi, r, Interpreter::stackElementScale()); |
0 | 66 } |
67 static inline Address laddress(Register r) { | |
68 return Address(rdi, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(1)); | |
69 } | |
70 static inline Address haddress(Register r) { | |
71 return Address(rdi, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(0)); | |
72 } | |
73 | |
1506 | 74 static inline Address faddress(Register r) { return iaddress(r); } |
75 static inline Address daddress(Register r) { return laddress(r); } | |
76 static inline Address aaddress(Register r) { return iaddress(r); } | |
0 | 77 |
78 // expression stack | |
79 // (Note: Must not use symmetric equivalents at_rsp_m1/2 since they store | |
80 // data beyond the rsp which is potentially unsafe in an MT environment; | |
81 // an interrupt may overwrite that data.) | |
82 static inline Address at_rsp () { | |
83 return Address(rsp, 0); | |
84 } | |
85 | |
86 // At top of Java expression stack which may be different than rsp(). It | |
87 // isn't for category 1 objects. | |
88 static inline Address at_tos () { | |
89 Address tos = Address(rsp, Interpreter::expr_offset_in_bytes(0)); | |
90 return tos; | |
91 } | |
92 | |
93 static inline Address at_tos_p1() { | |
94 return Address(rsp, Interpreter::expr_offset_in_bytes(1)); | |
95 } | |
96 | |
97 static inline Address at_tos_p2() { | |
98 return Address(rsp, Interpreter::expr_offset_in_bytes(2)); | |
99 } | |
100 | |
101 // Condition conversion | |
102 static Assembler::Condition j_not(TemplateTable::Condition cc) { | |
103 switch (cc) { | |
104 case TemplateTable::equal : return Assembler::notEqual; | |
105 case TemplateTable::not_equal : return Assembler::equal; | |
106 case TemplateTable::less : return Assembler::greaterEqual; | |
107 case TemplateTable::less_equal : return Assembler::greater; | |
108 case TemplateTable::greater : return Assembler::lessEqual; | |
109 case TemplateTable::greater_equal: return Assembler::less; | |
110 } | |
111 ShouldNotReachHere(); | |
112 return Assembler::zero; | |
113 } | |
114 | |
115 | |
116 //---------------------------------------------------------------------------------------------------- | |
117 // Miscelaneous helper routines | |
118 | |
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119 // Store an oop (or NULL) at the address described by obj. |
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120 // If val == noreg this means store a NULL |
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121 |
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122 static void do_oop_store(InterpreterMacroAssembler* _masm, |
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123 Address obj, |
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124 Register val, |
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125 BarrierSet::Name barrier, |
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126 bool precise) { |
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127 assert(val == noreg || val == rax, "parameter is just for looks"); |
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128 switch (barrier) { |
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129 #if INCLUDE_ALL_GCS |
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130 case BarrierSet::G1SATBCT: |
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131 case BarrierSet::G1SATBCTLogging: |
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132 { |
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133 // flatten object address if needed |
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134 // We do it regardless of precise because we need the registers |
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135 if (obj.index() == noreg && obj.disp() == 0) { |
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136 if (obj.base() != rdx) { |
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137 __ movl(rdx, obj.base()); |
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138 } |
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139 } else { |
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140 __ leal(rdx, obj); |
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141 } |
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142 __ get_thread(rcx); |
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143 __ save_bcp(); |
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144 __ g1_write_barrier_pre(rdx /* obj */, |
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145 rbx /* pre_val */, |
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146 rcx /* thread */, |
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147 rsi /* tmp */, |
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148 val != noreg /* tosca_live */, |
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149 false /* expand_call */); |
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150 |
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151 // Do the actual store |
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152 // noreg means NULL |
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153 if (val == noreg) { |
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154 __ movptr(Address(rdx, 0), NULL_WORD); |
342
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155 // No post barrier for NULL |
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156 } else { |
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157 __ movl(Address(rdx, 0), val); |
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158 __ g1_write_barrier_post(rdx /* store_adr */, |
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159 val /* new_val */, |
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160 rcx /* thread */, |
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161 rbx /* tmp */, |
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162 rsi /* tmp2 */); |
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163 } |
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164 __ restore_bcp(); |
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165 |
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166 } |
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167 break; |
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168 #endif // INCLUDE_ALL_GCS |
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169 case BarrierSet::CardTableModRef: |
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170 case BarrierSet::CardTableExtension: |
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171 { |
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172 if (val == noreg) { |
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173 __ movptr(obj, NULL_WORD); |
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174 } else { |
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175 __ movl(obj, val); |
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176 // flatten object address if needed |
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177 if (!precise || (obj.index() == noreg && obj.disp() == 0)) { |
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178 __ store_check(obj.base()); |
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179 } else { |
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180 __ leal(rdx, obj); |
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181 __ store_check(rdx); |
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182 } |
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183 } |
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184 } |
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185 break; |
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186 case BarrierSet::ModRef: |
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187 case BarrierSet::Other: |
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188 if (val == noreg) { |
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189 __ movptr(obj, NULL_WORD); |
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190 } else { |
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191 __ movl(obj, val); |
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192 } |
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193 break; |
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194 default : |
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195 ShouldNotReachHere(); |
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196 |
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197 } |
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198 } |
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199 |
0 | 200 Address TemplateTable::at_bcp(int offset) { |
201 assert(_desc->uses_bcp(), "inconsistent uses_bcp information"); | |
202 return Address(rsi, offset); | |
203 } | |
204 | |
205 | |
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206 void TemplateTable::patch_bytecode(Bytecodes::Code bc, Register bc_reg, |
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207 Register temp_reg, bool load_bc_into_bc_reg/*=true*/, |
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208 int byte_no) { |
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209 if (!RewriteBytecodes) return; |
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210 Label L_patch_done; |
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211 |
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212 switch (bc) { |
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213 case Bytecodes::_fast_aputfield: |
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214 case Bytecodes::_fast_bputfield: |
23614 | 215 case Bytecodes::_fast_zputfield: |
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216 case Bytecodes::_fast_cputfield: |
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217 case Bytecodes::_fast_dputfield: |
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218 case Bytecodes::_fast_fputfield: |
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219 case Bytecodes::_fast_iputfield: |
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220 case Bytecodes::_fast_lputfield: |
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221 case Bytecodes::_fast_sputfield: |
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222 { |
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223 // We skip bytecode quickening for putfield instructions when |
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224 // the put_code written to the constant pool cache is zero. |
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225 // This is required so that every execution of this instruction |
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226 // calls out to InterpreterRuntime::resolve_get_put to do |
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227 // additional, required work. |
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228 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range"); |
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229 assert(load_bc_into_bc_reg, "we use bc_reg as temp"); |
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230 __ get_cache_and_index_and_bytecode_at_bcp(bc_reg, temp_reg, temp_reg, byte_no, 1); |
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231 __ movl(bc_reg, bc); |
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232 __ cmpl(temp_reg, (int) 0); |
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233 __ jcc(Assembler::zero, L_patch_done); // don't patch |
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234 } |
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235 break; |
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236 default: |
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237 assert(byte_no == -1, "sanity"); |
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238 // the pair bytecodes have already done the load. |
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239 if (load_bc_into_bc_reg) { |
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240 __ movl(bc_reg, bc); |
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241 } |
304 | 242 } |
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243 |
0 | 244 if (JvmtiExport::can_post_breakpoint()) { |
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245 Label L_fast_patch; |
0 | 246 // if a breakpoint is present we can't rewrite the stream directly |
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247 __ movzbl(temp_reg, at_bcp(0)); |
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248 __ cmpl(temp_reg, Bytecodes::_breakpoint); |
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249 __ jcc(Assembler::notEqual, L_fast_patch); |
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250 __ get_method(temp_reg); |
0 | 251 // Let breakpoint table handling rewrite to quicker bytecode |
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252 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), temp_reg, rsi, bc_reg); |
0 | 253 #ifndef ASSERT |
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254 __ jmpb(L_patch_done); |
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255 #else |
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256 __ jmp(L_patch_done); |
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257 #endif |
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258 __ bind(L_fast_patch); |
0 | 259 } |
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260 |
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261 #ifdef ASSERT |
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262 Label L_okay; |
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263 __ load_unsigned_byte(temp_reg, at_bcp(0)); |
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264 __ cmpl(temp_reg, (int)Bytecodes::java_code(bc)); |
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265 __ jccb(Assembler::equal, L_okay); |
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266 __ cmpl(temp_reg, bc_reg); |
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267 __ jcc(Assembler::equal, L_okay); |
0 | 268 __ stop("patching the wrong bytecode"); |
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269 __ bind(L_okay); |
0 | 270 #endif |
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271 |
0 | 272 // patch bytecode |
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273 __ movb(at_bcp(0), bc_reg); |
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274 __ bind(L_patch_done); |
0 | 275 } |
276 | |
277 //---------------------------------------------------------------------------------------------------- | |
278 // Individual instructions | |
279 | |
280 void TemplateTable::nop() { | |
281 transition(vtos, vtos); | |
282 // nothing to do | |
283 } | |
284 | |
285 void TemplateTable::shouldnotreachhere() { | |
286 transition(vtos, vtos); | |
287 __ stop("shouldnotreachhere bytecode"); | |
288 } | |
289 | |
290 | |
291 | |
292 void TemplateTable::aconst_null() { | |
293 transition(vtos, atos); | |
304 | 294 __ xorptr(rax, rax); |
0 | 295 } |
296 | |
297 | |
298 void TemplateTable::iconst(int value) { | |
299 transition(vtos, itos); | |
300 if (value == 0) { | |
304 | 301 __ xorptr(rax, rax); |
0 | 302 } else { |
304 | 303 __ movptr(rax, value); |
0 | 304 } |
305 } | |
306 | |
307 | |
308 void TemplateTable::lconst(int value) { | |
309 transition(vtos, ltos); | |
310 if (value == 0) { | |
304 | 311 __ xorptr(rax, rax); |
0 | 312 } else { |
304 | 313 __ movptr(rax, value); |
0 | 314 } |
315 assert(value >= 0, "check this code"); | |
304 | 316 __ xorptr(rdx, rdx); |
0 | 317 } |
318 | |
319 | |
320 void TemplateTable::fconst(int value) { | |
321 transition(vtos, ftos); | |
322 if (value == 0) { __ fldz(); | |
323 } else if (value == 1) { __ fld1(); | |
324 } else if (value == 2) { __ fld1(); __ fld1(); __ faddp(); // should do a better solution here | |
325 } else { ShouldNotReachHere(); | |
326 } | |
327 } | |
328 | |
329 | |
330 void TemplateTable::dconst(int value) { | |
331 transition(vtos, dtos); | |
332 if (value == 0) { __ fldz(); | |
333 } else if (value == 1) { __ fld1(); | |
334 } else { ShouldNotReachHere(); | |
335 } | |
336 } | |
337 | |
338 | |
339 void TemplateTable::bipush() { | |
340 transition(vtos, itos); | |
341 __ load_signed_byte(rax, at_bcp(1)); | |
342 } | |
343 | |
344 | |
345 void TemplateTable::sipush() { | |
346 transition(vtos, itos); | |
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347 __ load_unsigned_short(rax, at_bcp(1)); |
304 | 348 __ bswapl(rax); |
0 | 349 __ sarl(rax, 16); |
350 } | |
351 | |
352 void TemplateTable::ldc(bool wide) { | |
353 transition(vtos, vtos); | |
354 Label call_ldc, notFloat, notClass, Done; | |
355 | |
356 if (wide) { | |
357 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
358 } else { | |
359 __ load_unsigned_byte(rbx, at_bcp(1)); | |
360 } | |
361 __ get_cpool_and_tags(rcx, rax); | |
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362 const int base_offset = ConstantPool::header_size() * wordSize; |
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363 const int tags_offset = Array<u1>::base_offset_in_bytes(); |
0 | 364 |
365 // get type | |
304 | 366 __ xorptr(rdx, rdx); |
0 | 367 __ movb(rdx, Address(rax, rbx, Address::times_1, tags_offset)); |
368 | |
369 // unresolved class - get the resolved class | |
370 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClass); | |
371 __ jccb(Assembler::equal, call_ldc); | |
372 | |
373 // unresolved class in error (resolution failed) - call into runtime | |
374 // so that the same error from first resolution attempt is thrown. | |
375 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClassInError); | |
376 __ jccb(Assembler::equal, call_ldc); | |
377 | |
378 // resolved class - need to call vm to get java mirror of the class | |
379 __ cmpl(rdx, JVM_CONSTANT_Class); | |
380 __ jcc(Assembler::notEqual, notClass); | |
381 | |
382 __ bind(call_ldc); | |
383 __ movl(rcx, wide); | |
384 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), rcx); | |
385 __ push(atos); | |
386 __ jmp(Done); | |
387 | |
388 __ bind(notClass); | |
389 __ cmpl(rdx, JVM_CONSTANT_Float); | |
390 __ jccb(Assembler::notEqual, notFloat); | |
391 // ftos | |
304 | 392 __ fld_s( Address(rcx, rbx, Address::times_ptr, base_offset)); |
0 | 393 __ push(ftos); |
394 __ jmp(Done); | |
395 | |
396 __ bind(notFloat); | |
397 #ifdef ASSERT | |
398 { Label L; | |
399 __ cmpl(rdx, JVM_CONSTANT_Integer); | |
400 __ jcc(Assembler::equal, L); | |
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401 // String and Object are rewritten to fast_aldc |
0 | 402 __ stop("unexpected tag type in ldc"); |
403 __ bind(L); | |
404 } | |
405 #endif | |
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406 // itos JVM_CONSTANT_Integer only |
304 | 407 __ movl(rax, Address(rcx, rbx, Address::times_ptr, base_offset)); |
0 | 408 __ push(itos); |
409 __ bind(Done); | |
410 } | |
411 | |
1602 | 412 // Fast path for caching oop constants. |
413 void TemplateTable::fast_aldc(bool wide) { | |
414 transition(vtos, atos); | |
415 | |
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416 Register result = rax; |
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417 Register tmp = rdx; |
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418 int index_size = wide ? sizeof(u2) : sizeof(u1); |
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419 |
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420 Label resolved; |
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421 |
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422 // We are resolved if the resolved reference cache entry contains a |
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423 // non-null object (String, MethodType, etc.) |
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424 assert_different_registers(result, tmp); |
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425 __ get_cache_index_at_bcp(tmp, 1, index_size); |
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426 __ load_resolved_reference_at_index(result, tmp); |
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427 __ testl(result, result); |
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428 __ jcc(Assembler::notZero, resolved); |
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429 |
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430 address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); |
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431 |
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432 // first time invocation - must resolve first |
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433 __ movl(tmp, (int)bytecode()); |
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434 __ call_VM(result, entry, tmp); |
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435 |
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436 __ bind(resolved); |
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437 |
1602 | 438 if (VerifyOops) { |
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439 __ verify_oop(result); |
1602 | 440 } |
441 } | |
442 | |
0 | 443 void TemplateTable::ldc2_w() { |
444 transition(vtos, vtos); | |
445 Label Long, Done; | |
446 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
447 | |
448 __ get_cpool_and_tags(rcx, rax); | |
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449 const int base_offset = ConstantPool::header_size() * wordSize; |
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450 const int tags_offset = Array<u1>::base_offset_in_bytes(); |
0 | 451 |
452 // get type | |
453 __ cmpb(Address(rax, rbx, Address::times_1, tags_offset), JVM_CONSTANT_Double); | |
454 __ jccb(Assembler::notEqual, Long); | |
455 // dtos | |
304 | 456 __ fld_d( Address(rcx, rbx, Address::times_ptr, base_offset)); |
0 | 457 __ push(dtos); |
458 __ jmpb(Done); | |
459 | |
460 __ bind(Long); | |
461 // ltos | |
304 | 462 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, base_offset + 0 * wordSize)); |
463 NOT_LP64(__ movptr(rdx, Address(rcx, rbx, Address::times_ptr, base_offset + 1 * wordSize))); | |
0 | 464 |
465 __ push(ltos); | |
466 | |
467 __ bind(Done); | |
468 } | |
469 | |
470 | |
471 void TemplateTable::locals_index(Register reg, int offset) { | |
472 __ load_unsigned_byte(reg, at_bcp(offset)); | |
304 | 473 __ negptr(reg); |
0 | 474 } |
475 | |
476 | |
477 void TemplateTable::iload() { | |
478 transition(vtos, itos); | |
479 if (RewriteFrequentPairs) { | |
480 Label rewrite, done; | |
481 | |
482 // get next byte | |
483 __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_iload))); | |
484 // if _iload, wait to rewrite to iload2. We only want to rewrite the | |
485 // last two iloads in a pair. Comparing against fast_iload means that | |
486 // the next bytecode is neither an iload or a caload, and therefore | |
487 // an iload pair. | |
488 __ cmpl(rbx, Bytecodes::_iload); | |
489 __ jcc(Assembler::equal, done); | |
490 | |
491 __ cmpl(rbx, Bytecodes::_fast_iload); | |
492 __ movl(rcx, Bytecodes::_fast_iload2); | |
493 __ jccb(Assembler::equal, rewrite); | |
494 | |
495 // if _caload, rewrite to fast_icaload | |
496 __ cmpl(rbx, Bytecodes::_caload); | |
497 __ movl(rcx, Bytecodes::_fast_icaload); | |
498 __ jccb(Assembler::equal, rewrite); | |
499 | |
500 // rewrite so iload doesn't check again. | |
501 __ movl(rcx, Bytecodes::_fast_iload); | |
502 | |
503 // rewrite | |
504 // rcx: fast bytecode | |
505 __ bind(rewrite); | |
506 patch_bytecode(Bytecodes::_iload, rcx, rbx, false); | |
507 __ bind(done); | |
508 } | |
509 | |
510 // Get the local value into tos | |
511 locals_index(rbx); | |
512 __ movl(rax, iaddress(rbx)); | |
513 } | |
514 | |
515 | |
516 void TemplateTable::fast_iload2() { | |
517 transition(vtos, itos); | |
518 locals_index(rbx); | |
519 __ movl(rax, iaddress(rbx)); | |
520 __ push(itos); | |
521 locals_index(rbx, 3); | |
522 __ movl(rax, iaddress(rbx)); | |
523 } | |
524 | |
525 void TemplateTable::fast_iload() { | |
526 transition(vtos, itos); | |
527 locals_index(rbx); | |
528 __ movl(rax, iaddress(rbx)); | |
529 } | |
530 | |
531 | |
532 void TemplateTable::lload() { | |
533 transition(vtos, ltos); | |
534 locals_index(rbx); | |
304 | 535 __ movptr(rax, laddress(rbx)); |
536 NOT_LP64(__ movl(rdx, haddress(rbx))); | |
0 | 537 } |
538 | |
539 | |
540 void TemplateTable::fload() { | |
541 transition(vtos, ftos); | |
542 locals_index(rbx); | |
543 __ fld_s(faddress(rbx)); | |
544 } | |
545 | |
546 | |
547 void TemplateTable::dload() { | |
548 transition(vtos, dtos); | |
549 locals_index(rbx); | |
1506 | 550 __ fld_d(daddress(rbx)); |
0 | 551 } |
552 | |
553 | |
554 void TemplateTable::aload() { | |
555 transition(vtos, atos); | |
556 locals_index(rbx); | |
304 | 557 __ movptr(rax, aaddress(rbx)); |
0 | 558 } |
559 | |
560 | |
561 void TemplateTable::locals_index_wide(Register reg) { | |
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562 __ load_unsigned_short(reg, at_bcp(2)); |
304 | 563 __ bswapl(reg); |
0 | 564 __ shrl(reg, 16); |
304 | 565 __ negptr(reg); |
0 | 566 } |
567 | |
568 | |
569 void TemplateTable::wide_iload() { | |
570 transition(vtos, itos); | |
571 locals_index_wide(rbx); | |
572 __ movl(rax, iaddress(rbx)); | |
573 } | |
574 | |
575 | |
576 void TemplateTable::wide_lload() { | |
577 transition(vtos, ltos); | |
578 locals_index_wide(rbx); | |
304 | 579 __ movptr(rax, laddress(rbx)); |
580 NOT_LP64(__ movl(rdx, haddress(rbx))); | |
0 | 581 } |
582 | |
583 | |
584 void TemplateTable::wide_fload() { | |
585 transition(vtos, ftos); | |
586 locals_index_wide(rbx); | |
587 __ fld_s(faddress(rbx)); | |
588 } | |
589 | |
590 | |
591 void TemplateTable::wide_dload() { | |
592 transition(vtos, dtos); | |
593 locals_index_wide(rbx); | |
1506 | 594 __ fld_d(daddress(rbx)); |
0 | 595 } |
596 | |
597 | |
598 void TemplateTable::wide_aload() { | |
599 transition(vtos, atos); | |
600 locals_index_wide(rbx); | |
304 | 601 __ movptr(rax, aaddress(rbx)); |
0 | 602 } |
603 | |
604 void TemplateTable::index_check(Register array, Register index) { | |
605 // Pop ptr into array | |
606 __ pop_ptr(array); | |
607 index_check_without_pop(array, index); | |
608 } | |
609 | |
610 void TemplateTable::index_check_without_pop(Register array, Register index) { | |
611 // destroys rbx, | |
612 // check array | |
613 __ null_check(array, arrayOopDesc::length_offset_in_bytes()); | |
304 | 614 LP64_ONLY(__ movslq(index, index)); |
0 | 615 // check index |
616 __ cmpl(index, Address(array, arrayOopDesc::length_offset_in_bytes())); | |
617 if (index != rbx) { | |
618 // ??? convention: move aberrant index into rbx, for exception message | |
619 assert(rbx != array, "different registers"); | |
304 | 620 __ mov(rbx, index); |
0 | 621 } |
622 __ jump_cc(Assembler::aboveEqual, | |
623 ExternalAddress(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry)); | |
624 } | |
625 | |
626 | |
627 void TemplateTable::iaload() { | |
628 transition(itos, itos); | |
629 // rdx: array | |
630 index_check(rdx, rax); // kills rbx, | |
631 // rax,: index | |
632 __ movl(rax, Address(rdx, rax, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_INT))); | |
633 } | |
634 | |
635 | |
636 void TemplateTable::laload() { | |
637 transition(itos, ltos); | |
638 // rax,: index | |
639 // rdx: array | |
640 index_check(rdx, rax); | |
304 | 641 __ mov(rbx, rax); |
0 | 642 // rbx,: index |
304 | 643 __ movptr(rax, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize)); |
644 NOT_LP64(__ movl(rdx, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize))); | |
0 | 645 } |
646 | |
647 | |
648 void TemplateTable::faload() { | |
649 transition(itos, ftos); | |
650 // rdx: array | |
651 index_check(rdx, rax); // kills rbx, | |
652 // rax,: index | |
653 __ fld_s(Address(rdx, rax, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT))); | |
654 } | |
655 | |
656 | |
657 void TemplateTable::daload() { | |
658 transition(itos, dtos); | |
659 // rdx: array | |
660 index_check(rdx, rax); // kills rbx, | |
661 // rax,: index | |
662 __ fld_d(Address(rdx, rax, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); | |
663 } | |
664 | |
665 | |
666 void TemplateTable::aaload() { | |
667 transition(itos, atos); | |
668 // rdx: array | |
669 index_check(rdx, rax); // kills rbx, | |
670 // rax,: index | |
304 | 671 __ movptr(rax, Address(rdx, rax, Address::times_ptr, arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
0 | 672 } |
673 | |
674 | |
675 void TemplateTable::baload() { | |
676 transition(itos, itos); | |
677 // rdx: array | |
678 index_check(rdx, rax); // kills rbx, | |
679 // rax,: index | |
680 // can do better code for P5 - fix this at some point | |
681 __ load_signed_byte(rbx, Address(rdx, rax, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE))); | |
304 | 682 __ mov(rax, rbx); |
0 | 683 } |
684 | |
685 | |
686 void TemplateTable::caload() { | |
687 transition(itos, itos); | |
688 // rdx: array | |
689 index_check(rdx, rax); // kills rbx, | |
690 // rax,: index | |
691 // can do better code for P5 - may want to improve this at some point | |
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692 __ load_unsigned_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
304 | 693 __ mov(rax, rbx); |
0 | 694 } |
695 | |
696 // iload followed by caload frequent pair | |
697 void TemplateTable::fast_icaload() { | |
698 transition(vtos, itos); | |
699 // load index out of locals | |
700 locals_index(rbx); | |
701 __ movl(rax, iaddress(rbx)); | |
702 | |
703 // rdx: array | |
704 index_check(rdx, rax); | |
705 // rax,: index | |
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706 __ load_unsigned_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); |
304 | 707 __ mov(rax, rbx); |
0 | 708 } |
709 | |
710 void TemplateTable::saload() { | |
711 transition(itos, itos); | |
712 // rdx: array | |
713 index_check(rdx, rax); // kills rbx, | |
714 // rax,: index | |
715 // can do better code for P5 - may want to improve this at some point | |
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716 __ load_signed_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_SHORT))); |
304 | 717 __ mov(rax, rbx); |
0 | 718 } |
719 | |
720 | |
721 void TemplateTable::iload(int n) { | |
722 transition(vtos, itos); | |
723 __ movl(rax, iaddress(n)); | |
724 } | |
725 | |
726 | |
727 void TemplateTable::lload(int n) { | |
728 transition(vtos, ltos); | |
304 | 729 __ movptr(rax, laddress(n)); |
730 NOT_LP64(__ movptr(rdx, haddress(n))); | |
0 | 731 } |
732 | |
733 | |
734 void TemplateTable::fload(int n) { | |
735 transition(vtos, ftos); | |
736 __ fld_s(faddress(n)); | |
737 } | |
738 | |
739 | |
740 void TemplateTable::dload(int n) { | |
741 transition(vtos, dtos); | |
1506 | 742 __ fld_d(daddress(n)); |
0 | 743 } |
744 | |
745 | |
746 void TemplateTable::aload(int n) { | |
747 transition(vtos, atos); | |
304 | 748 __ movptr(rax, aaddress(n)); |
0 | 749 } |
750 | |
751 | |
752 void TemplateTable::aload_0() { | |
753 transition(vtos, atos); | |
754 // According to bytecode histograms, the pairs: | |
755 // | |
756 // _aload_0, _fast_igetfield | |
757 // _aload_0, _fast_agetfield | |
758 // _aload_0, _fast_fgetfield | |
759 // | |
760 // occur frequently. If RewriteFrequentPairs is set, the (slow) _aload_0 | |
761 // bytecode checks if the next bytecode is either _fast_igetfield, | |
762 // _fast_agetfield or _fast_fgetfield and then rewrites the | |
763 // current bytecode into a pair bytecode; otherwise it rewrites the current | |
764 // bytecode into _fast_aload_0 that doesn't do the pair check anymore. | |
765 // | |
766 // Note: If the next bytecode is _getfield, the rewrite must be delayed, | |
767 // otherwise we may miss an opportunity for a pair. | |
768 // | |
769 // Also rewrite frequent pairs | |
770 // aload_0, aload_1 | |
771 // aload_0, iload_1 | |
772 // These bytecodes with a small amount of code are most profitable to rewrite | |
773 if (RewriteFrequentPairs) { | |
774 Label rewrite, done; | |
775 // get next byte | |
776 __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_aload_0))); | |
777 | |
778 // do actual aload_0 | |
779 aload(0); | |
780 | |
781 // if _getfield then wait with rewrite | |
782 __ cmpl(rbx, Bytecodes::_getfield); | |
783 __ jcc(Assembler::equal, done); | |
784 | |
785 // if _igetfield then reqrite to _fast_iaccess_0 | |
786 assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
787 __ cmpl(rbx, Bytecodes::_fast_igetfield); | |
788 __ movl(rcx, Bytecodes::_fast_iaccess_0); | |
789 __ jccb(Assembler::equal, rewrite); | |
790 | |
791 // if _agetfield then reqrite to _fast_aaccess_0 | |
792 assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
793 __ cmpl(rbx, Bytecodes::_fast_agetfield); | |
794 __ movl(rcx, Bytecodes::_fast_aaccess_0); | |
795 __ jccb(Assembler::equal, rewrite); | |
796 | |
797 // if _fgetfield then reqrite to _fast_faccess_0 | |
798 assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
799 __ cmpl(rbx, Bytecodes::_fast_fgetfield); | |
800 __ movl(rcx, Bytecodes::_fast_faccess_0); | |
801 __ jccb(Assembler::equal, rewrite); | |
802 | |
803 // else rewrite to _fast_aload0 | |
804 assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == Bytecodes::_aload_0, "fix bytecode definition"); | |
805 __ movl(rcx, Bytecodes::_fast_aload_0); | |
806 | |
807 // rewrite | |
808 // rcx: fast bytecode | |
809 __ bind(rewrite); | |
810 patch_bytecode(Bytecodes::_aload_0, rcx, rbx, false); | |
811 | |
812 __ bind(done); | |
813 } else { | |
814 aload(0); | |
815 } | |
816 } | |
817 | |
818 void TemplateTable::istore() { | |
819 transition(itos, vtos); | |
820 locals_index(rbx); | |
821 __ movl(iaddress(rbx), rax); | |
822 } | |
823 | |
824 | |
825 void TemplateTable::lstore() { | |
826 transition(ltos, vtos); | |
827 locals_index(rbx); | |
304 | 828 __ movptr(laddress(rbx), rax); |
829 NOT_LP64(__ movptr(haddress(rbx), rdx)); | |
0 | 830 } |
831 | |
832 | |
833 void TemplateTable::fstore() { | |
834 transition(ftos, vtos); | |
835 locals_index(rbx); | |
836 __ fstp_s(faddress(rbx)); | |
837 } | |
838 | |
839 | |
840 void TemplateTable::dstore() { | |
841 transition(dtos, vtos); | |
842 locals_index(rbx); | |
1506 | 843 __ fstp_d(daddress(rbx)); |
0 | 844 } |
845 | |
846 | |
847 void TemplateTable::astore() { | |
848 transition(vtos, vtos); | |
1506 | 849 __ pop_ptr(rax); |
0 | 850 locals_index(rbx); |
304 | 851 __ movptr(aaddress(rbx), rax); |
0 | 852 } |
853 | |
854 | |
855 void TemplateTable::wide_istore() { | |
856 transition(vtos, vtos); | |
857 __ pop_i(rax); | |
858 locals_index_wide(rbx); | |
859 __ movl(iaddress(rbx), rax); | |
860 } | |
861 | |
862 | |
863 void TemplateTable::wide_lstore() { | |
864 transition(vtos, vtos); | |
865 __ pop_l(rax, rdx); | |
866 locals_index_wide(rbx); | |
304 | 867 __ movptr(laddress(rbx), rax); |
868 NOT_LP64(__ movl(haddress(rbx), rdx)); | |
0 | 869 } |
870 | |
871 | |
872 void TemplateTable::wide_fstore() { | |
873 wide_istore(); | |
874 } | |
875 | |
876 | |
877 void TemplateTable::wide_dstore() { | |
878 wide_lstore(); | |
879 } | |
880 | |
881 | |
882 void TemplateTable::wide_astore() { | |
883 transition(vtos, vtos); | |
1506 | 884 __ pop_ptr(rax); |
0 | 885 locals_index_wide(rbx); |
304 | 886 __ movptr(aaddress(rbx), rax); |
0 | 887 } |
888 | |
889 | |
890 void TemplateTable::iastore() { | |
891 transition(itos, vtos); | |
892 __ pop_i(rbx); | |
893 // rax,: value | |
894 // rdx: array | |
895 index_check(rdx, rbx); // prefer index in rbx, | |
896 // rbx,: index | |
897 __ movl(Address(rdx, rbx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_INT)), rax); | |
898 } | |
899 | |
900 | |
901 void TemplateTable::lastore() { | |
902 transition(ltos, vtos); | |
903 __ pop_i(rbx); | |
904 // rax,: low(value) | |
905 // rcx: array | |
906 // rdx: high(value) | |
907 index_check(rcx, rbx); // prefer index in rbx, | |
908 // rbx,: index | |
304 | 909 __ movptr(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize), rax); |
910 NOT_LP64(__ movl(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize), rdx)); | |
0 | 911 } |
912 | |
913 | |
914 void TemplateTable::fastore() { | |
915 transition(ftos, vtos); | |
916 __ pop_i(rbx); | |
917 // rdx: array | |
918 // st0: value | |
919 index_check(rdx, rbx); // prefer index in rbx, | |
920 // rbx,: index | |
921 __ fstp_s(Address(rdx, rbx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT))); | |
922 } | |
923 | |
924 | |
925 void TemplateTable::dastore() { | |
926 transition(dtos, vtos); | |
927 __ pop_i(rbx); | |
928 // rdx: array | |
929 // st0: value | |
930 index_check(rdx, rbx); // prefer index in rbx, | |
931 // rbx,: index | |
932 __ fstp_d(Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); | |
933 } | |
934 | |
935 | |
936 void TemplateTable::aastore() { | |
937 Label is_null, ok_is_subtype, done; | |
938 transition(vtos, vtos); | |
939 // stack: ..., array, index, value | |
304 | 940 __ movptr(rax, at_tos()); // Value |
0 | 941 __ movl(rcx, at_tos_p1()); // Index |
304 | 942 __ movptr(rdx, at_tos_p2()); // Array |
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943 |
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944 Address element_address(rdx, rcx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_OBJECT)); |
0 | 945 index_check_without_pop(rdx, rcx); // kills rbx, |
946 // do array store check - check for NULL value first | |
304 | 947 __ testptr(rax, rax); |
0 | 948 __ jcc(Assembler::zero, is_null); |
949 | |
950 // Move subklass into EBX | |
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951 __ load_klass(rbx, rax); |
0 | 952 // Move superklass into EAX |
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953 __ load_klass(rax, rdx); |
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954 __ movptr(rax, Address(rax, ObjArrayKlass::element_klass_offset())); |
304 | 955 // Compress array+index*wordSize+12 into a single register. Frees ECX. |
362 | 956 __ lea(rdx, element_address); |
0 | 957 |
958 // Generate subtype check. Blows ECX. Resets EDI to locals. | |
959 // Superklass in EAX. Subklass in EBX. | |
960 __ gen_subtype_check( rbx, ok_is_subtype ); | |
961 | |
962 // Come here on failure | |
963 // object is at TOS | |
964 __ jump(ExternalAddress(Interpreter::_throw_ArrayStoreException_entry)); | |
965 | |
966 // Come here on success | |
967 __ bind(ok_is_subtype); | |
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968 |
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969 // Get the value to store |
362 | 970 __ movptr(rax, at_rsp()); |
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971 // and store it with appropriate barrier |
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972 do_oop_store(_masm, Address(rdx, 0), rax, _bs->kind(), true); |
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973 |
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974 __ jmp(done); |
0 | 975 |
976 // Have a NULL in EAX, EDX=array, ECX=index. Store NULL at ary[idx] | |
977 __ bind(is_null); | |
978 __ profile_null_seen(rbx); | |
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979 |
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980 // Store NULL, (noreg means NULL to do_oop_store) |
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981 do_oop_store(_masm, element_address, noreg, _bs->kind(), true); |
0 | 982 |
983 // Pop stack arguments | |
984 __ bind(done); | |
1506 | 985 __ addptr(rsp, 3 * Interpreter::stackElementSize); |
0 | 986 } |
987 | |
988 | |
989 void TemplateTable::bastore() { | |
990 transition(itos, vtos); | |
991 __ pop_i(rbx); | |
23614 | 992 // rax: value |
993 // rbx: index | |
0 | 994 // rdx: array |
23614 | 995 index_check(rdx, rbx); // prefer index in rbx |
996 // Need to check whether array is boolean or byte | |
997 // since both types share the bastore bytecode. | |
998 __ load_klass(rcx, rdx); | |
999 __ movl(rcx, Address(rcx, Klass::layout_helper_offset())); | |
1000 int diffbit = Klass::layout_helper_boolean_diffbit(); | |
1001 __ testl(rcx, diffbit); | |
1002 Label L_skip; | |
1003 __ jccb(Assembler::zero, L_skip); | |
1004 __ andl(rax, 1); // if it is a T_BOOLEAN array, mask the stored value to 0/1 | |
1005 __ bind(L_skip); | |
1006 __ movb(Address(rdx, rbx, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE)), rax); | |
0 | 1007 } |
1008 | |
1009 | |
1010 void TemplateTable::castore() { | |
1011 transition(itos, vtos); | |
1012 __ pop_i(rbx); | |
1013 // rax,: value | |
1014 // rdx: array | |
1015 index_check(rdx, rbx); // prefer index in rbx, | |
1016 // rbx,: index | |
1017 __ movw(Address(rdx, rbx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)), rax); | |
1018 } | |
1019 | |
1020 | |
1021 void TemplateTable::sastore() { | |
1022 castore(); | |
1023 } | |
1024 | |
1025 | |
1026 void TemplateTable::istore(int n) { | |
1027 transition(itos, vtos); | |
1028 __ movl(iaddress(n), rax); | |
1029 } | |
1030 | |
1031 | |
1032 void TemplateTable::lstore(int n) { | |
1033 transition(ltos, vtos); | |
304 | 1034 __ movptr(laddress(n), rax); |
1035 NOT_LP64(__ movptr(haddress(n), rdx)); | |
0 | 1036 } |
1037 | |
1038 | |
1039 void TemplateTable::fstore(int n) { | |
1040 transition(ftos, vtos); | |
1041 __ fstp_s(faddress(n)); | |
1042 } | |
1043 | |
1044 | |
1045 void TemplateTable::dstore(int n) { | |
1046 transition(dtos, vtos); | |
1506 | 1047 __ fstp_d(daddress(n)); |
0 | 1048 } |
1049 | |
1050 | |
1051 void TemplateTable::astore(int n) { | |
1052 transition(vtos, vtos); | |
1506 | 1053 __ pop_ptr(rax); |
304 | 1054 __ movptr(aaddress(n), rax); |
0 | 1055 } |
1056 | |
1057 | |
1058 void TemplateTable::pop() { | |
1059 transition(vtos, vtos); | |
1506 | 1060 __ addptr(rsp, Interpreter::stackElementSize); |
0 | 1061 } |
1062 | |
1063 | |
1064 void TemplateTable::pop2() { | |
1065 transition(vtos, vtos); | |
1506 | 1066 __ addptr(rsp, 2*Interpreter::stackElementSize); |
0 | 1067 } |
1068 | |
1069 | |
1070 void TemplateTable::dup() { | |
1071 transition(vtos, vtos); | |
1072 // stack: ..., a | |
1506 | 1073 __ load_ptr(0, rax); |
1074 __ push_ptr(rax); | |
0 | 1075 // stack: ..., a, a |
1076 } | |
1077 | |
1078 | |
1079 void TemplateTable::dup_x1() { | |
1080 transition(vtos, vtos); | |
1081 // stack: ..., a, b | |
1506 | 1082 __ load_ptr( 0, rax); // load b |
1083 __ load_ptr( 1, rcx); // load a | |
1084 __ store_ptr(1, rax); // store b | |
1085 __ store_ptr(0, rcx); // store a | |
1086 __ push_ptr(rax); // push b | |
0 | 1087 // stack: ..., b, a, b |
1088 } | |
1089 | |
1090 | |
1091 void TemplateTable::dup_x2() { | |
1092 transition(vtos, vtos); | |
1093 // stack: ..., a, b, c | |
1506 | 1094 __ load_ptr( 0, rax); // load c |
1095 __ load_ptr( 2, rcx); // load a | |
1096 __ store_ptr(2, rax); // store c in a | |
1097 __ push_ptr(rax); // push c | |
0 | 1098 // stack: ..., c, b, c, c |
1506 | 1099 __ load_ptr( 2, rax); // load b |
1100 __ store_ptr(2, rcx); // store a in b | |
0 | 1101 // stack: ..., c, a, c, c |
1506 | 1102 __ store_ptr(1, rax); // store b in c |
0 | 1103 // stack: ..., c, a, b, c |
1104 } | |
1105 | |
1106 | |
1107 void TemplateTable::dup2() { | |
1108 transition(vtos, vtos); | |
1109 // stack: ..., a, b | |
1506 | 1110 __ load_ptr(1, rax); // load a |
1111 __ push_ptr(rax); // push a | |
1112 __ load_ptr(1, rax); // load b | |
1113 __ push_ptr(rax); // push b | |
0 | 1114 // stack: ..., a, b, a, b |
1115 } | |
1116 | |
1117 | |
1118 void TemplateTable::dup2_x1() { | |
1119 transition(vtos, vtos); | |
1120 // stack: ..., a, b, c | |
1506 | 1121 __ load_ptr( 0, rcx); // load c |
1122 __ load_ptr( 1, rax); // load b | |
1123 __ push_ptr(rax); // push b | |
1124 __ push_ptr(rcx); // push c | |
0 | 1125 // stack: ..., a, b, c, b, c |
1506 | 1126 __ store_ptr(3, rcx); // store c in b |
0 | 1127 // stack: ..., a, c, c, b, c |
1506 | 1128 __ load_ptr( 4, rcx); // load a |
1129 __ store_ptr(2, rcx); // store a in 2nd c | |
0 | 1130 // stack: ..., a, c, a, b, c |
1506 | 1131 __ store_ptr(4, rax); // store b in a |
0 | 1132 // stack: ..., b, c, a, b, c |
1133 // stack: ..., b, c, a, b, c | |
1134 } | |
1135 | |
1136 | |
1137 void TemplateTable::dup2_x2() { | |
1138 transition(vtos, vtos); | |
1139 // stack: ..., a, b, c, d | |
1506 | 1140 __ load_ptr( 0, rcx); // load d |
1141 __ load_ptr( 1, rax); // load c | |
1142 __ push_ptr(rax); // push c | |
1143 __ push_ptr(rcx); // push d | |
0 | 1144 // stack: ..., a, b, c, d, c, d |
1506 | 1145 __ load_ptr( 4, rax); // load b |
1146 __ store_ptr(2, rax); // store b in d | |
1147 __ store_ptr(4, rcx); // store d in b | |
0 | 1148 // stack: ..., a, d, c, b, c, d |
1506 | 1149 __ load_ptr( 5, rcx); // load a |
1150 __ load_ptr( 3, rax); // load c | |
1151 __ store_ptr(3, rcx); // store a in c | |
1152 __ store_ptr(5, rax); // store c in a | |
0 | 1153 // stack: ..., c, d, a, b, c, d |
1154 // stack: ..., c, d, a, b, c, d | |
1155 } | |
1156 | |
1157 | |
1158 void TemplateTable::swap() { | |
1159 transition(vtos, vtos); | |
1160 // stack: ..., a, b | |
1506 | 1161 __ load_ptr( 1, rcx); // load a |
1162 __ load_ptr( 0, rax); // load b | |
1163 __ store_ptr(0, rcx); // store a in b | |
1164 __ store_ptr(1, rax); // store b in a | |
0 | 1165 // stack: ..., b, a |
1166 } | |
1167 | |
1168 | |
1169 void TemplateTable::iop2(Operation op) { | |
1170 transition(itos, itos); | |
1171 switch (op) { | |
1506 | 1172 case add : __ pop_i(rdx); __ addl (rax, rdx); break; |
304 | 1173 case sub : __ mov(rdx, rax); __ pop_i(rax); __ subl (rax, rdx); break; |
1506 | 1174 case mul : __ pop_i(rdx); __ imull(rax, rdx); break; |
1175 case _and : __ pop_i(rdx); __ andl (rax, rdx); break; | |
1176 case _or : __ pop_i(rdx); __ orl (rax, rdx); break; | |
1177 case _xor : __ pop_i(rdx); __ xorl (rax, rdx); break; | |
304 | 1178 case shl : __ mov(rcx, rax); __ pop_i(rax); __ shll (rax); break; // implicit masking of lower 5 bits by Intel shift instr. |
1179 case shr : __ mov(rcx, rax); __ pop_i(rax); __ sarl (rax); break; // implicit masking of lower 5 bits by Intel shift instr. | |
1180 case ushr : __ mov(rcx, rax); __ pop_i(rax); __ shrl (rax); break; // implicit masking of lower 5 bits by Intel shift instr. | |
0 | 1181 default : ShouldNotReachHere(); |
1182 } | |
1183 } | |
1184 | |
1185 | |
1186 void TemplateTable::lop2(Operation op) { | |
1187 transition(ltos, ltos); | |
1188 __ pop_l(rbx, rcx); | |
1189 switch (op) { | |
1506 | 1190 case add : __ addl(rax, rbx); __ adcl(rdx, rcx); break; |
1191 case sub : __ subl(rbx, rax); __ sbbl(rcx, rdx); | |
1192 __ mov (rax, rbx); __ mov (rdx, rcx); break; | |
1193 case _and : __ andl(rax, rbx); __ andl(rdx, rcx); break; | |
1194 case _or : __ orl (rax, rbx); __ orl (rdx, rcx); break; | |
1195 case _xor : __ xorl(rax, rbx); __ xorl(rdx, rcx); break; | |
1196 default : ShouldNotReachHere(); | |
0 | 1197 } |
1198 } | |
1199 | |
1200 | |
1201 void TemplateTable::idiv() { | |
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); | |
1210 } | |
1211 | |
1212 | |
1213 void TemplateTable::irem() { | |
1214 transition(itos, itos); | |
304 | 1215 __ mov(rcx, rax); |
0 | 1216 __ pop_i(rax); |
1217 // Note: could xor rax, and rcx and compare with (-1 ^ min_int). If | |
1218 // they are not equal, one could do a normal division (no correction | |
1219 // needed), which may speed up this implementation for the common case. | |
1220 // (see also JVM spec., p.243 & p.271) | |
1221 __ corrected_idivl(rcx); | |
304 | 1222 __ mov(rax, rdx); |
0 | 1223 } |
1224 | |
1225 | |
1226 void TemplateTable::lmul() { | |
1227 transition(ltos, ltos); | |
1228 __ pop_l(rbx, rcx); | |
304 | 1229 __ push(rcx); __ push(rbx); |
1230 __ push(rdx); __ push(rax); | |
0 | 1231 __ lmul(2 * wordSize, 0); |
304 | 1232 __ addptr(rsp, 4 * wordSize); // take off temporaries |
0 | 1233 } |
1234 | |
1235 | |
1236 void TemplateTable::ldiv() { | |
1237 transition(ltos, ltos); | |
1238 __ pop_l(rbx, rcx); | |
304 | 1239 __ push(rcx); __ push(rbx); |
1240 __ push(rdx); __ push(rax); | |
0 | 1241 // check if y = 0 |
1242 __ orl(rax, rdx); | |
1243 __ jump_cc(Assembler::zero, | |
1244 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1245 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::ldiv)); | |
304 | 1246 __ addptr(rsp, 4 * wordSize); // take off temporaries |
0 | 1247 } |
1248 | |
1249 | |
1250 void TemplateTable::lrem() { | |
1251 transition(ltos, ltos); | |
1252 __ pop_l(rbx, rcx); | |
304 | 1253 __ push(rcx); __ push(rbx); |
1254 __ push(rdx); __ push(rax); | |
0 | 1255 // check if y = 0 |
1256 __ orl(rax, rdx); | |
1257 __ jump_cc(Assembler::zero, | |
1258 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
1259 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::lrem)); | |
304 | 1260 __ addptr(rsp, 4 * wordSize); |
0 | 1261 } |
1262 | |
1263 | |
1264 void TemplateTable::lshl() { | |
1265 transition(itos, ltos); | |
1266 __ movl(rcx, rax); // get shift count | |
1267 __ pop_l(rax, rdx); // get shift value | |
1268 __ lshl(rdx, rax); | |
1269 } | |
1270 | |
1271 | |
1272 void TemplateTable::lshr() { | |
1273 transition(itos, ltos); | |
304 | 1274 __ mov(rcx, rax); // get shift count |
0 | 1275 __ pop_l(rax, rdx); // get shift value |
1276 __ lshr(rdx, rax, true); | |
1277 } | |
1278 | |
1279 | |
1280 void TemplateTable::lushr() { | |
1281 transition(itos, ltos); | |
304 | 1282 __ mov(rcx, rax); // get shift count |
0 | 1283 __ pop_l(rax, rdx); // get shift value |
1284 __ lshr(rdx, rax); | |
1285 } | |
1286 | |
1287 | |
1288 void TemplateTable::fop2(Operation op) { | |
1289 transition(ftos, ftos); | |
1290 switch (op) { | |
1291 case add: __ fadd_s (at_rsp()); break; | |
1292 case sub: __ fsubr_s(at_rsp()); break; | |
1293 case mul: __ fmul_s (at_rsp()); break; | |
1294 case div: __ fdivr_s(at_rsp()); break; | |
1295 case rem: __ fld_s (at_rsp()); __ fremr(rax); break; | |
1296 default : ShouldNotReachHere(); | |
1297 } | |
1298 __ f2ieee(); | |
304 | 1299 __ pop(rax); // pop float thing off |
0 | 1300 } |
1301 | |
1302 | |
1303 void TemplateTable::dop2(Operation op) { | |
1304 transition(dtos, dtos); | |
1305 | |
1306 switch (op) { | |
1307 case add: __ fadd_d (at_rsp()); break; | |
1308 case sub: __ fsubr_d(at_rsp()); break; | |
1309 case mul: { | |
1310 Label L_strict; | |
1311 Label L_join; | |
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1312 const Address access_flags (rcx, Method::access_flags_offset()); |
0 | 1313 __ get_method(rcx); |
1314 __ movl(rcx, access_flags); | |
1315 __ testl(rcx, JVM_ACC_STRICT); | |
1316 __ jccb(Assembler::notZero, L_strict); | |
1317 __ fmul_d (at_rsp()); | |
1318 __ jmpb(L_join); | |
1319 __ bind(L_strict); | |
1320 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); | |
1321 __ fmulp(); | |
1322 __ fmul_d (at_rsp()); | |
1323 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); | |
1324 __ fmulp(); | |
1325 __ bind(L_join); | |
1326 break; | |
1327 } | |
1328 case div: { | |
1329 Label L_strict; | |
1330 Label L_join; | |
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1331 const Address access_flags (rcx, Method::access_flags_offset()); |
0 | 1332 __ get_method(rcx); |
1333 __ movl(rcx, access_flags); | |
1334 __ testl(rcx, JVM_ACC_STRICT); | |
1335 __ jccb(Assembler::notZero, L_strict); | |
1336 __ fdivr_d(at_rsp()); | |
1337 __ jmp(L_join); | |
1338 __ bind(L_strict); | |
1339 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); | |
1340 __ fmul_d (at_rsp()); | |
1341 __ fdivrp(); | |
1342 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); | |
1343 __ fmulp(); | |
1344 __ bind(L_join); | |
1345 break; | |
1346 } | |
1347 case rem: __ fld_d (at_rsp()); __ fremr(rax); break; | |
1348 default : ShouldNotReachHere(); | |
1349 } | |
1350 __ d2ieee(); | |
1351 // Pop double precision number from rsp. | |
304 | 1352 __ pop(rax); |
1353 __ pop(rdx); | |
0 | 1354 } |
1355 | |
1356 | |
1357 void TemplateTable::ineg() { | |
1358 transition(itos, itos); | |
1359 __ negl(rax); | |
1360 } | |
1361 | |
1362 | |
1363 void TemplateTable::lneg() { | |
1364 transition(ltos, ltos); | |
1365 __ lneg(rdx, rax); | |
1366 } | |
1367 | |
1368 | |
1369 void TemplateTable::fneg() { | |
1370 transition(ftos, ftos); | |
1371 __ fchs(); | |
1372 } | |
1373 | |
1374 | |
1375 void TemplateTable::dneg() { | |
1376 transition(dtos, dtos); | |
1377 __ fchs(); | |
1378 } | |
1379 | |
1380 | |
1381 void TemplateTable::iinc() { | |
1382 transition(vtos, vtos); | |
1383 __ load_signed_byte(rdx, at_bcp(2)); // get constant | |
1384 locals_index(rbx); | |
1385 __ addl(iaddress(rbx), rdx); | |
1386 } | |
1387 | |
1388 | |
1389 void TemplateTable::wide_iinc() { | |
1390 transition(vtos, vtos); | |
1391 __ movl(rdx, at_bcp(4)); // get constant | |
1392 locals_index_wide(rbx); | |
304 | 1393 __ bswapl(rdx); // swap bytes & sign-extend constant |
0 | 1394 __ sarl(rdx, 16); |
1395 __ addl(iaddress(rbx), rdx); | |
1396 // Note: should probably use only one movl to get both | |
1397 // the index and the constant -> fix this | |
1398 } | |
1399 | |
1400 | |
1401 void TemplateTable::convert() { | |
1402 // Checking | |
1403 #ifdef ASSERT | |
1404 { TosState tos_in = ilgl; | |
1405 TosState tos_out = ilgl; | |
1406 switch (bytecode()) { | |
1407 case Bytecodes::_i2l: // fall through | |
1408 case Bytecodes::_i2f: // fall through | |
1409 case Bytecodes::_i2d: // fall through | |
1410 case Bytecodes::_i2b: // fall through | |
1411 case Bytecodes::_i2c: // fall through | |
1412 case Bytecodes::_i2s: tos_in = itos; break; | |
1413 case Bytecodes::_l2i: // fall through | |
1414 case Bytecodes::_l2f: // fall through | |
1415 case Bytecodes::_l2d: tos_in = ltos; break; | |
1416 case Bytecodes::_f2i: // fall through | |
1417 case Bytecodes::_f2l: // fall through | |
1418 case Bytecodes::_f2d: tos_in = ftos; break; | |
1419 case Bytecodes::_d2i: // fall through | |
1420 case Bytecodes::_d2l: // fall through | |
1421 case Bytecodes::_d2f: tos_in = dtos; break; | |
1422 default : ShouldNotReachHere(); | |
1423 } | |
1424 switch (bytecode()) { | |
1425 case Bytecodes::_l2i: // fall through | |
1426 case Bytecodes::_f2i: // fall through | |
1427 case Bytecodes::_d2i: // fall through | |
1428 case Bytecodes::_i2b: // fall through | |
1429 case Bytecodes::_i2c: // fall through | |
1430 case Bytecodes::_i2s: tos_out = itos; break; | |
1431 case Bytecodes::_i2l: // fall through | |
1432 case Bytecodes::_f2l: // fall through | |
1433 case Bytecodes::_d2l: tos_out = ltos; break; | |
1434 case Bytecodes::_i2f: // fall through | |
1435 case Bytecodes::_l2f: // fall through | |
1436 case Bytecodes::_d2f: tos_out = ftos; break; | |
1437 case Bytecodes::_i2d: // fall through | |
1438 case Bytecodes::_l2d: // fall through | |
1439 case Bytecodes::_f2d: tos_out = dtos; break; | |
1440 default : ShouldNotReachHere(); | |
1441 } | |
1442 transition(tos_in, tos_out); | |
1443 } | |
1444 #endif // ASSERT | |
1445 | |
1446 // Conversion | |
304 | 1447 // (Note: use push(rcx)/pop(rcx) for 1/2-word stack-ptr manipulation) |
0 | 1448 switch (bytecode()) { |
1449 case Bytecodes::_i2l: | |
1450 __ extend_sign(rdx, rax); | |
1451 break; | |
1452 case Bytecodes::_i2f: | |
304 | 1453 __ push(rax); // store int on tos |
0 | 1454 __ fild_s(at_rsp()); // load int to ST0 |
1455 __ f2ieee(); // truncate to float size | |
304 | 1456 __ pop(rcx); // adjust rsp |
0 | 1457 break; |
1458 case Bytecodes::_i2d: | |
304 | 1459 __ push(rax); // add one slot for d2ieee() |
1460 __ push(rax); // store int on tos | |
0 | 1461 __ fild_s(at_rsp()); // load int to ST0 |
1462 __ d2ieee(); // truncate to double size | |
304 | 1463 __ pop(rcx); // adjust rsp |
1464 __ pop(rcx); | |
0 | 1465 break; |
1466 case Bytecodes::_i2b: | |
1467 __ shll(rax, 24); // truncate upper 24 bits | |
1468 __ sarl(rax, 24); // and sign-extend byte | |
304 | 1469 LP64_ONLY(__ movsbl(rax, rax)); |
0 | 1470 break; |
1471 case Bytecodes::_i2c: | |
1472 __ andl(rax, 0xFFFF); // truncate upper 16 bits | |
304 | 1473 LP64_ONLY(__ movzwl(rax, rax)); |
0 | 1474 break; |
1475 case Bytecodes::_i2s: | |
1476 __ shll(rax, 16); // truncate upper 16 bits | |
1477 __ sarl(rax, 16); // and sign-extend short | |
304 | 1478 LP64_ONLY(__ movswl(rax, rax)); |
0 | 1479 break; |
1480 case Bytecodes::_l2i: | |
1481 /* nothing to do */ | |
1482 break; | |
1483 case Bytecodes::_l2f: | |
304 | 1484 __ push(rdx); // store long on tos |
1485 __ push(rax); | |
0 | 1486 __ fild_d(at_rsp()); // load long to ST0 |
1487 __ f2ieee(); // truncate to float size | |
304 | 1488 __ pop(rcx); // adjust rsp |
1489 __ pop(rcx); | |
0 | 1490 break; |
1491 case Bytecodes::_l2d: | |
304 | 1492 __ push(rdx); // store long on tos |
1493 __ push(rax); | |
0 | 1494 __ fild_d(at_rsp()); // load long to ST0 |
1495 __ d2ieee(); // truncate to double size | |
304 | 1496 __ pop(rcx); // adjust rsp |
1497 __ pop(rcx); | |
0 | 1498 break; |
1499 case Bytecodes::_f2i: | |
304 | 1500 __ push(rcx); // reserve space for argument |
0 | 1501 __ fstp_s(at_rsp()); // pass float argument on stack |
1502 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1); | |
1503 break; | |
1504 case Bytecodes::_f2l: | |
304 | 1505 __ push(rcx); // reserve space for argument |
0 | 1506 __ fstp_s(at_rsp()); // pass float argument on stack |
1507 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1); | |
1508 break; | |
1509 case Bytecodes::_f2d: | |
1510 /* nothing to do */ | |
1511 break; | |
1512 case Bytecodes::_d2i: | |
304 | 1513 __ push(rcx); // reserve space for argument |
1514 __ push(rcx); | |
0 | 1515 __ fstp_d(at_rsp()); // pass double argument on stack |
1516 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 2); | |
1517 break; | |
1518 case Bytecodes::_d2l: | |
304 | 1519 __ push(rcx); // reserve space for argument |
1520 __ push(rcx); | |
0 | 1521 __ fstp_d(at_rsp()); // pass double argument on stack |
1522 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 2); | |
1523 break; | |
1524 case Bytecodes::_d2f: | |
304 | 1525 __ push(rcx); // reserve space for f2ieee() |
0 | 1526 __ f2ieee(); // truncate to float size |
304 | 1527 __ pop(rcx); // adjust rsp |
0 | 1528 break; |
1529 default : | |
1530 ShouldNotReachHere(); | |
1531 } | |
1532 } | |
1533 | |
1534 | |
1535 void TemplateTable::lcmp() { | |
1536 transition(ltos, itos); | |
1537 // y = rdx:rax | |
1538 __ pop_l(rbx, rcx); // get x = rcx:rbx | |
1539 __ lcmp2int(rcx, rbx, rdx, rax);// rcx := cmp(x, y) | |
304 | 1540 __ mov(rax, rcx); |
0 | 1541 } |
1542 | |
1543 | |
1544 void TemplateTable::float_cmp(bool is_float, int unordered_result) { | |
1545 if (is_float) { | |
1546 __ fld_s(at_rsp()); | |
1547 } else { | |
1548 __ fld_d(at_rsp()); | |
304 | 1549 __ pop(rdx); |
0 | 1550 } |
304 | 1551 __ pop(rcx); |
0 | 1552 __ fcmp2int(rax, unordered_result < 0); |
1553 } | |
1554 | |
1555 | |
1556 void TemplateTable::branch(bool is_jsr, bool is_wide) { | |
1557 __ get_method(rcx); // ECX holds method | |
1558 __ profile_taken_branch(rax,rbx); // EAX holds updated MDP, EBX holds bumped taken count | |
1559 | |
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1560 const ByteSize be_offset = MethodCounters::backedge_counter_offset() + |
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1561 InvocationCounter::counter_offset(); |
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1562 const ByteSize inv_offset = MethodCounters::invocation_counter_offset() + |
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1563 InvocationCounter::counter_offset(); |
0 | 1564 |
1565 // Load up EDX with the branch displacement | |
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1566 if (is_wide) { |
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1567 __ movl(rdx, at_bcp(1)); |
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1568 } else { |
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1569 __ load_signed_short(rdx, at_bcp(1)); |
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1570 } |
304 | 1571 __ bswapl(rdx); |
0 | 1572 if (!is_wide) __ sarl(rdx, 16); |
304 | 1573 LP64_ONLY(__ movslq(rdx, rdx)); |
1574 | |
0 | 1575 |
1576 // Handle all the JSR stuff here, then exit. | |
1577 // It's much shorter and cleaner than intermingling with the | |
605 | 1578 // non-JSR normal-branch stuff occurring below. |
0 | 1579 if (is_jsr) { |
1580 // Pre-load the next target bytecode into EBX | |
1581 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1, 0)); | |
1582 | |
1583 // compute return address as bci in rax, | |
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1584 __ lea(rax, at_bcp((is_wide ? 5 : 3) - in_bytes(ConstMethod::codes_offset()))); |
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1585 __ subptr(rax, Address(rcx, Method::const_offset())); |
362 | 1586 // Adjust the bcp in RSI by the displacement in EDX |
304 | 1587 __ addptr(rsi, rdx); |
0 | 1588 // Push return address |
1589 __ push_i(rax); | |
1590 // jsr returns vtos | |
1591 __ dispatch_only_noverify(vtos); | |
1592 return; | |
1593 } | |
1594 | |
1595 // Normal (non-jsr) branch handling | |
1596 | |
362 | 1597 // Adjust the bcp in RSI by the displacement in EDX |
304 | 1598 __ addptr(rsi, rdx); |
0 | 1599 |
1600 assert(UseLoopCounter || !UseOnStackReplacement, "on-stack-replacement requires loop counters"); | |
1601 Label backedge_counter_overflow; | |
1602 Label profile_method; | |
1603 Label dispatch; | |
1604 if (UseLoopCounter) { | |
1605 // increment backedge counter for backward branches | |
1606 // rax,: MDO | |
1607 // rbx,: MDO bumped taken-count | |
1608 // rcx: method | |
1609 // rdx: target offset | |
1610 // rsi: target bcp | |
1611 // rdi: locals pointer | |
1612 __ testl(rdx, rdx); // check if forward or backward branch | |
1613 __ jcc(Assembler::positive, dispatch); // count only if backward branch | |
1614 | |
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1615 // check if MethodCounters exists |
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1616 Label has_counters; |
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1617 __ movptr(rax, Address(rcx, Method::method_counters_offset())); |
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1618 __ testptr(rax, rax); |
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1619 __ jcc(Assembler::notZero, has_counters); |
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1620 __ push(rdx); |
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1621 __ push(rcx); |
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1622 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::build_method_counters), |
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1623 rcx); |
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1624 __ pop(rcx); |
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1625 __ pop(rdx); |
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1626 __ movptr(rax, Address(rcx, Method::method_counters_offset())); |
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1627 __ testptr(rax, rax); |
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1628 __ jcc(Assembler::zero, dispatch); |
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1629 __ bind(has_counters); |
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1630 |
1783 | 1631 if (TieredCompilation) { |
1632 Label no_mdo; | |
1633 int increment = InvocationCounter::count_increment; | |
1634 int mask = ((1 << Tier0BackedgeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
1635 if (ProfileInterpreter) { | |
1636 // Are we profiling? | |
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1637 __ movptr(rbx, Address(rcx, in_bytes(Method::method_data_offset()))); |
1783 | 1638 __ testptr(rbx, rbx); |
1639 __ jccb(Assembler::zero, no_mdo); | |
1640 // Increment the MDO backedge counter | |
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1641 const Address mdo_backedge_counter(rbx, in_bytes(MethodData::backedge_counter_offset()) + |
1783 | 1642 in_bytes(InvocationCounter::counter_offset())); |
1643 __ increment_mask_and_jump(mdo_backedge_counter, increment, mask, | |
1644 rax, false, Assembler::zero, &backedge_counter_overflow); | |
1645 __ jmp(dispatch); | |
0 | 1646 } |
1783 | 1647 __ bind(no_mdo); |
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1648 // Increment backedge counter in MethodCounters* |
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1649 __ movptr(rcx, Address(rcx, Method::method_counters_offset())); |
1783 | 1650 __ increment_mask_and_jump(Address(rcx, be_offset), increment, mask, |
1651 rax, false, Assembler::zero, &backedge_counter_overflow); | |
0 | 1652 } else { |
1783 | 1653 // increment counter |
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1654 __ movptr(rcx, Address(rcx, Method::method_counters_offset())); |
1783 | 1655 __ movl(rax, Address(rcx, be_offset)); // load backedge counter |
1656 __ incrementl(rax, InvocationCounter::count_increment); // increment counter | |
1657 __ movl(Address(rcx, be_offset), rax); // store counter | |
1658 | |
1659 __ movl(rax, Address(rcx, inv_offset)); // load invocation counter | |
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1660 |
1783 | 1661 __ andl(rax, InvocationCounter::count_mask_value); // and the status bits |
1662 __ addl(rax, Address(rcx, be_offset)); // add both counters | |
1663 | |
1664 if (ProfileInterpreter) { | |
1665 // Test to see if we should create a method data oop | |
0 | 1666 __ cmp32(rax, |
1783 | 1667 ExternalAddress((address) &InvocationCounter::InterpreterProfileLimit)); |
1668 __ jcc(Assembler::less, dispatch); | |
1669 | |
1670 // if no method data exists, go to profile method | |
1671 __ test_method_data_pointer(rax, profile_method); | |
1672 | |
1673 if (UseOnStackReplacement) { | |
1674 // check for overflow against rbx, which is the MDO taken count | |
1675 __ cmp32(rbx, | |
1676 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1677 __ jcc(Assembler::below, dispatch); | |
1678 | |
1679 // When ProfileInterpreter is on, the backedge_count comes from the | |
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1680 // MethodData*, which value does not get reset on the call to |
1783 | 1681 // frequency_counter_overflow(). To avoid excessive calls to the overflow |
1682 // routine while the method is being compiled, add a second test to make | |
1683 // sure the overflow function is called only once every overflow_frequency. | |
1684 const int overflow_frequency = 1024; | |
1685 __ andptr(rbx, overflow_frequency-1); | |
1686 __ jcc(Assembler::zero, backedge_counter_overflow); | |
1687 } | |
1688 } else { | |
1689 if (UseOnStackReplacement) { | |
1690 // check for overflow against rax, which is the sum of the counters | |
1691 __ cmp32(rax, | |
1692 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
1693 __ jcc(Assembler::aboveEqual, backedge_counter_overflow); | |
1694 | |
1695 } | |
0 | 1696 } |
1697 } | |
1698 __ bind(dispatch); | |
1699 } | |
1700 | |
1701 // Pre-load the next target bytecode into EBX | |
1702 __ load_unsigned_byte(rbx, Address(rsi, 0)); | |
1703 | |
1704 // continue with the bytecode @ target | |
1705 // rax,: return bci for jsr's, unused otherwise | |
1706 // rbx,: target bytecode | |
1707 // rsi: target bcp | |
1708 __ dispatch_only(vtos); | |
1709 | |
1710 if (UseLoopCounter) { | |
1711 if (ProfileInterpreter) { | |
1712 // Out-of-line code to allocate method data oop. | |
1713 __ bind(profile_method); | |
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1714 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
0 | 1715 __ load_unsigned_byte(rbx, Address(rsi, 0)); // restore target bytecode |
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1716 __ set_method_data_pointer_for_bcp(); |
0 | 1717 __ jmp(dispatch); |
1718 } | |
1719 | |
1720 if (UseOnStackReplacement) { | |
1721 | |
1722 // invocation counter overflow | |
1723 __ bind(backedge_counter_overflow); | |
304 | 1724 __ negptr(rdx); |
1725 __ addptr(rdx, rsi); // branch bcp | |
0 | 1726 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rdx); |
1727 __ load_unsigned_byte(rbx, Address(rsi, 0)); // restore target bytecode | |
1728 | |
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1729 Label maybe_load_mdp; |
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1730 // rax: osr nmethod (osr ok) or NULL (osr not possible) |
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1731 // rbx: target bytecode |
0 | 1732 // rdx: scratch |
1733 // rdi: locals pointer | |
1734 // rsi: bcp | |
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1735 __ testptr(rax, rax); // test result |
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1736 __ jcc(Assembler::zero, maybe_load_mdp); // no osr if null |
0 | 1737 // nmethod may have been invalidated (VM may block upon call_VM return) |
1738 __ movl(rcx, Address(rax, nmethod::entry_bci_offset())); | |
1739 __ cmpl(rcx, InvalidOSREntryBci); | |
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1740 __ jcc(Assembler::equal, maybe_load_mdp); |
0 | 1741 |
1742 // We have the address of an on stack replacement routine in rax, | |
1743 // We need to prepare to execute the OSR method. First we must | |
1744 // migrate the locals and monitors off of the stack. | |
1745 | |
304 | 1746 __ mov(rbx, rax); // save the nmethod |
0 | 1747 |
1748 const Register thread = rcx; | |
1749 __ get_thread(thread); | |
1750 call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin)); | |
1751 // rax, is OSR buffer, move it to expected parameter location | |
304 | 1752 __ mov(rcx, rax); |
0 | 1753 |
1754 // pop the interpreter frame | |
304 | 1755 __ movptr(rdx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
0 | 1756 __ leave(); // remove frame anchor |
304 | 1757 __ pop(rdi); // get return address |
1758 __ mov(rsp, rdx); // set sp to sender sp | |
0 | 1759 |
1760 // Align stack pointer for compiled code (note that caller is | |
1761 // responsible for undoing this fixup by remembering the old SP | |
1762 // in an rbp,-relative location) | |
304 | 1763 __ andptr(rsp, -(StackAlignmentInBytes)); |
0 | 1764 |
1765 // push the (possibly adjusted) return address | |
304 | 1766 __ push(rdi); |
0 | 1767 |
1768 // and begin the OSR nmethod | |
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1769 __ jmp(Address(rbx, nmethod::osr_entry_point_offset())); |
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1770 |
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1771 // Load the MDO in case it was created by frequency_counter_overflow |
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1772 __ bind(maybe_load_mdp); |
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1773 __ set_method_data_pointer_for_bcp(); |
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1774 __ jmp(dispatch); |
0 | 1775 } |
1776 } | |
1777 } | |
1778 | |
1779 | |
1780 void TemplateTable::if_0cmp(Condition cc) { | |
1781 transition(itos, vtos); | |
1782 // assume branch is more often taken than not (loops use backward branches) | |
1783 Label not_taken; | |
1784 __ testl(rax, rax); | |
1785 __ jcc(j_not(cc), not_taken); | |
1786 branch(false, false); | |
1787 __ bind(not_taken); | |
1788 __ profile_not_taken_branch(rax); | |
1789 } | |
1790 | |
1791 | |
1792 void TemplateTable::if_icmp(Condition cc) { | |
1793 transition(itos, vtos); | |
1794 // assume branch is more often taken than not (loops use backward branches) | |
1795 Label not_taken; | |
1796 __ pop_i(rdx); | |
1797 __ cmpl(rdx, rax); | |
1798 __ jcc(j_not(cc), not_taken); | |
1799 branch(false, false); | |
1800 __ bind(not_taken); | |
1801 __ profile_not_taken_branch(rax); | |
1802 } | |
1803 | |
1804 | |
1805 void TemplateTable::if_nullcmp(Condition cc) { | |
1806 transition(atos, vtos); | |
1807 // assume branch is more often taken than not (loops use backward branches) | |
1808 Label not_taken; | |
304 | 1809 __ testptr(rax, rax); |
0 | 1810 __ jcc(j_not(cc), not_taken); |
1811 branch(false, false); | |
1812 __ bind(not_taken); | |
1813 __ profile_not_taken_branch(rax); | |
1814 } | |
1815 | |
1816 | |
1817 void TemplateTable::if_acmp(Condition cc) { | |
1818 transition(atos, vtos); | |
1819 // assume branch is more often taken than not (loops use backward branches) | |
1820 Label not_taken; | |
1821 __ pop_ptr(rdx); | |
304 | 1822 __ cmpptr(rdx, rax); |
0 | 1823 __ jcc(j_not(cc), not_taken); |
1824 branch(false, false); | |
1825 __ bind(not_taken); | |
1826 __ profile_not_taken_branch(rax); | |
1827 } | |
1828 | |
1829 | |
1830 void TemplateTable::ret() { | |
1831 transition(vtos, vtos); | |
1832 locals_index(rbx); | |
304 | 1833 __ movptr(rbx, iaddress(rbx)); // get return bci, compute return bcp |
0 | 1834 __ profile_ret(rbx, rcx); |
1835 __ get_method(rax); | |
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1836 __ movptr(rsi, Address(rax, Method::const_offset())); |
304 | 1837 __ lea(rsi, Address(rsi, rbx, Address::times_1, |
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1838 ConstMethod::codes_offset())); |
0 | 1839 __ dispatch_next(vtos); |
1840 } | |
1841 | |
1842 | |
1843 void TemplateTable::wide_ret() { | |
1844 transition(vtos, vtos); | |
1845 locals_index_wide(rbx); | |
304 | 1846 __ movptr(rbx, iaddress(rbx)); // get return bci, compute return bcp |
0 | 1847 __ profile_ret(rbx, rcx); |
1848 __ get_method(rax); | |
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1849 __ movptr(rsi, Address(rax, Method::const_offset())); |
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1850 __ lea(rsi, Address(rsi, rbx, Address::times_1, ConstMethod::codes_offset())); |
0 | 1851 __ dispatch_next(vtos); |
1852 } | |
1853 | |
1854 | |
1855 void TemplateTable::tableswitch() { | |
1856 Label default_case, continue_execution; | |
1857 transition(itos, vtos); | |
1858 // align rsi | |
304 | 1859 __ lea(rbx, at_bcp(wordSize)); |
1860 __ andptr(rbx, -wordSize); | |
0 | 1861 // load lo & hi |
1862 __ movl(rcx, Address(rbx, 1 * wordSize)); | |
1863 __ movl(rdx, Address(rbx, 2 * wordSize)); | |
304 | 1864 __ bswapl(rcx); |
1865 __ bswapl(rdx); | |
0 | 1866 // check against lo & hi |
1867 __ cmpl(rax, rcx); | |
1868 __ jccb(Assembler::less, default_case); | |
1869 __ cmpl(rax, rdx); | |
1870 __ jccb(Assembler::greater, default_case); | |
1871 // lookup dispatch offset | |
1872 __ subl(rax, rcx); | |
304 | 1873 __ movl(rdx, Address(rbx, rax, Address::times_4, 3 * BytesPerInt)); |
0 | 1874 __ profile_switch_case(rax, rbx, rcx); |
1875 // continue execution | |
1876 __ bind(continue_execution); | |
304 | 1877 __ bswapl(rdx); |
0 | 1878 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1)); |
304 | 1879 __ addptr(rsi, rdx); |
0 | 1880 __ dispatch_only(vtos); |
1881 // handle default | |
1882 __ bind(default_case); | |
1883 __ profile_switch_default(rax); | |
1884 __ movl(rdx, Address(rbx, 0)); | |
1885 __ jmp(continue_execution); | |
1886 } | |
1887 | |
1888 | |
1889 void TemplateTable::lookupswitch() { | |
1890 transition(itos, itos); | |
1891 __ stop("lookupswitch bytecode should have been rewritten"); | |
1892 } | |
1893 | |
1894 | |
1895 void TemplateTable::fast_linearswitch() { | |
1896 transition(itos, vtos); | |
1897 Label loop_entry, loop, found, continue_execution; | |
304 | 1898 // bswapl rax, so we can avoid bswapping the table entries |
1899 __ bswapl(rax); | |
0 | 1900 // align rsi |
304 | 1901 __ lea(rbx, at_bcp(wordSize)); // btw: should be able to get rid of this instruction (change offsets below) |
1902 __ andptr(rbx, -wordSize); | |
0 | 1903 // set counter |
1904 __ movl(rcx, Address(rbx, wordSize)); | |
304 | 1905 __ bswapl(rcx); |
0 | 1906 __ jmpb(loop_entry); |
1907 // table search | |
1908 __ bind(loop); | |
1909 __ cmpl(rax, Address(rbx, rcx, Address::times_8, 2 * wordSize)); | |
1910 __ jccb(Assembler::equal, found); | |
1911 __ bind(loop_entry); | |
304 | 1912 __ decrementl(rcx); |
0 | 1913 __ jcc(Assembler::greaterEqual, loop); |
1914 // default case | |
1915 __ profile_switch_default(rax); | |
1916 __ movl(rdx, Address(rbx, 0)); | |
1917 __ jmpb(continue_execution); | |
1918 // entry found -> get offset | |
1919 __ bind(found); | |
1920 __ movl(rdx, Address(rbx, rcx, Address::times_8, 3 * wordSize)); | |
1921 __ profile_switch_case(rcx, rax, rbx); | |
1922 // continue execution | |
1923 __ bind(continue_execution); | |
304 | 1924 __ bswapl(rdx); |
0 | 1925 __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1)); |
304 | 1926 __ addptr(rsi, rdx); |
0 | 1927 __ dispatch_only(vtos); |
1928 } | |
1929 | |
1930 | |
1931 void TemplateTable::fast_binaryswitch() { | |
1932 transition(itos, vtos); | |
1933 // Implementation using the following core algorithm: | |
1934 // | |
1935 // int binary_search(int key, LookupswitchPair* array, int n) { | |
1936 // // Binary search according to "Methodik des Programmierens" by | |
1937 // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985. | |
1938 // int i = 0; | |
1939 // int j = n; | |
1940 // while (i+1 < j) { | |
1941 // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q) | |
1942 // // with Q: for all i: 0 <= i < n: key < a[i] | |
1943 // // where a stands for the array and assuming that the (inexisting) | |
1944 // // element a[n] is infinitely big. | |
1945 // int h = (i + j) >> 1; | |
1946 // // i < h < j | |
1947 // if (key < array[h].fast_match()) { | |
1948 // j = h; | |
1949 // } else { | |
1950 // i = h; | |
1951 // } | |
1952 // } | |
1953 // // R: a[i] <= key < a[i+1] or Q | |
1954 // // (i.e., if key is within array, i is the correct index) | |
1955 // return i; | |
1956 // } | |
1957 | |
1958 // register allocation | |
1959 const Register key = rax; // already set (tosca) | |
1960 const Register array = rbx; | |
1961 const Register i = rcx; | |
1962 const Register j = rdx; | |
1963 const Register h = rdi; // needs to be restored | |
1964 const Register temp = rsi; | |
1965 // setup array | |
1966 __ save_bcp(); | |
1967 | |
304 | 1968 __ lea(array, at_bcp(3*wordSize)); // btw: should be able to get rid of this instruction (change offsets below) |
1969 __ andptr(array, -wordSize); | |
0 | 1970 // initialize i & j |
1971 __ xorl(i, i); // i = 0; | |
1972 __ movl(j, Address(array, -wordSize)); // j = length(array); | |
1973 // Convert j into native byteordering | |
304 | 1974 __ bswapl(j); |
0 | 1975 // and start |
1976 Label entry; | |
1977 __ jmp(entry); | |
1978 | |
1979 // binary search loop | |
1980 { Label loop; | |
1981 __ bind(loop); | |
1982 // int h = (i + j) >> 1; | |
1983 __ leal(h, Address(i, j, Address::times_1)); // h = i + j; | |
1984 __ sarl(h, 1); // h = (i + j) >> 1; | |
1985 // if (key < array[h].fast_match()) { | |
1986 // j = h; | |
1987 // } else { | |
1988 // i = h; | |
1989 // } | |
1990 // Convert array[h].match to native byte-ordering before compare | |
1991 __ movl(temp, Address(array, h, Address::times_8, 0*wordSize)); | |
304 | 1992 __ bswapl(temp); |
0 | 1993 __ cmpl(key, temp); |
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1994 // j = h if (key < array[h].fast_match()) |
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1995 __ cmov32(Assembler::less , j, h); |
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1996 // i = h if (key >= array[h].fast_match()) |
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1997 __ cmov32(Assembler::greaterEqual, i, h); |
0 | 1998 // while (i+1 < j) |
1999 __ bind(entry); | |
2000 __ leal(h, Address(i, 1)); // i+1 | |
2001 __ cmpl(h, j); // i+1 < j | |
2002 __ jcc(Assembler::less, loop); | |
2003 } | |
2004 | |
2005 // end of binary search, result index is i (must check again!) | |
2006 Label default_case; | |
2007 // Convert array[i].match to native byte-ordering before compare | |
2008 __ movl(temp, Address(array, i, Address::times_8, 0*wordSize)); | |
304 | 2009 __ bswapl(temp); |
0 | 2010 __ cmpl(key, temp); |
2011 __ jcc(Assembler::notEqual, default_case); | |
2012 | |
2013 // entry found -> j = offset | |
2014 __ movl(j , Address(array, i, Address::times_8, 1*wordSize)); | |
2015 __ profile_switch_case(i, key, array); | |
304 | 2016 __ bswapl(j); |
2017 LP64_ONLY(__ movslq(j, j)); | |
0 | 2018 __ restore_bcp(); |
2019 __ restore_locals(); // restore rdi | |
2020 __ load_unsigned_byte(rbx, Address(rsi, j, Address::times_1)); | |
2021 | |
304 | 2022 __ addptr(rsi, j); |
0 | 2023 __ dispatch_only(vtos); |
2024 | |
2025 // default case -> j = default offset | |
2026 __ bind(default_case); | |
2027 __ profile_switch_default(i); | |
2028 __ movl(j, Address(array, -2*wordSize)); | |
304 | 2029 __ bswapl(j); |
2030 LP64_ONLY(__ movslq(j, j)); | |
0 | 2031 __ restore_bcp(); |
2032 __ restore_locals(); // restore rdi | |
2033 __ load_unsigned_byte(rbx, Address(rsi, j, Address::times_1)); | |
304 | 2034 __ addptr(rsi, j); |
0 | 2035 __ dispatch_only(vtos); |
2036 } | |
2037 | |
2038 | |
2039 void TemplateTable::_return(TosState state) { | |
2040 transition(state, state); | |
2041 assert(_desc->calls_vm(), "inconsistent calls_vm information"); // call in remove_activation | |
2042 | |
2043 if (_desc->bytecode() == Bytecodes::_return_register_finalizer) { | |
2044 assert(state == vtos, "only valid state"); | |
304 | 2045 __ movptr(rax, aaddress(0)); |
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2046 __ load_klass(rdi, rax); |
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2047 __ movl(rdi, Address(rdi, Klass::access_flags_offset())); |
0 | 2048 __ testl(rdi, JVM_ACC_HAS_FINALIZER); |
2049 Label skip_register_finalizer; | |
2050 __ jcc(Assembler::zero, skip_register_finalizer); | |
2051 | |
2052 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), rax); | |
2053 | |
2054 __ bind(skip_register_finalizer); | |
2055 } | |
2056 | |
23614 | 2057 // Narrow result if state is itos but result type is smaller. |
2058 // Need to narrow in the return bytecode rather than in generate_return_entry | |
2059 // since compiled code callers expect the result to already be narrowed. | |
2060 if (state == itos) { | |
2061 __ narrow(rax); | |
2062 } | |
0 | 2063 __ remove_activation(state, rsi); |
23614 | 2064 |
0 | 2065 __ jmp(rsi); |
2066 } | |
2067 | |
2068 | |
2069 // ---------------------------------------------------------------------------- | |
2070 // Volatile variables demand their effects be made known to all CPU's in | |
2071 // order. Store buffers on most chips allow reads & writes to reorder; the | |
2072 // JMM's ReadAfterWrite.java test fails in -Xint mode without some kind of | |
2073 // memory barrier (i.e., it's not sufficient that the interpreter does not | |
2074 // reorder volatile references, the hardware also must not reorder them). | |
2075 // | |
2076 // According to the new Java Memory Model (JMM): | |
2077 // (1) All volatiles are serialized wrt to each other. | |
2078 // ALSO reads & writes act as aquire & release, so: | |
2079 // (2) A read cannot let unrelated NON-volatile memory refs that happen after | |
2080 // the read float up to before the read. It's OK for non-volatile memory refs | |
2081 // that happen before the volatile read to float down below it. | |
2082 // (3) Similar a volatile write cannot let unrelated NON-volatile memory refs | |
2083 // that happen BEFORE the write float down to after the write. It's OK for | |
2084 // non-volatile memory refs that happen after the volatile write to float up | |
2085 // before it. | |
2086 // | |
2087 // We only put in barriers around volatile refs (they are expensive), not | |
2088 // _between_ memory refs (that would require us to track the flavor of the | |
2089 // previous memory refs). Requirements (2) and (3) require some barriers | |
2090 // before volatile stores and after volatile loads. These nearly cover | |
2091 // requirement (1) but miss the volatile-store-volatile-load case. This final | |
2092 // case is placed after volatile-stores although it could just as well go | |
2093 // before volatile-loads. | |
304 | 2094 void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits order_constraint ) { |
0 | 2095 // Helper function to insert a is-volatile test and memory barrier |
2096 if( !os::is_MP() ) return; // Not needed on single CPU | |
304 | 2097 __ membar(order_constraint); |
0 | 2098 } |
2099 | |
1565 | 2100 void TemplateTable::resolve_cache_and_index(int byte_no, |
2101 Register Rcache, | |
2102 Register index, | |
2103 size_t index_size) { | |
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2104 const Register temp = rbx; |
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2105 assert_different_registers(Rcache, index, temp); |
1565 | 2106 |
0 | 2107 Label resolved; |
1565 | 2108 assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range"); |
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2109 __ get_cache_and_index_and_bytecode_at_bcp(Rcache, index, temp, byte_no, 1, index_size); |
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2110 __ cmpl(temp, (int) bytecode()); // have we resolved this bytecode? |
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2111 __ jcc(Assembler::equal, resolved); |
0 | 2112 |
2113 // resolve first time through | |
2114 address entry; | |
2115 switch (bytecode()) { | |
2116 case Bytecodes::_getstatic : // fall through | |
2117 case Bytecodes::_putstatic : // fall through | |
2118 case Bytecodes::_getfield : // fall through | |
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2119 case Bytecodes::_putfield : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put); break; |
0 | 2120 case Bytecodes::_invokevirtual : // fall through |
2121 case Bytecodes::_invokespecial : // fall through | |
2122 case Bytecodes::_invokestatic : // fall through | |
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2123 case Bytecodes::_invokeinterface: entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); break; |
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2124 case Bytecodes::_invokehandle : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokehandle); break; |
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2125 case Bytecodes::_invokedynamic : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic); break; |
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2126 default: |
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2127 fatal(err_msg("unexpected bytecode: %s", Bytecodes::name(bytecode()))); |
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2128 break; |
0 | 2129 } |
2130 __ movl(temp, (int)bytecode()); | |
2131 __ call_VM(noreg, entry, temp); | |
2132 // Update registers with resolved info | |
1565 | 2133 __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size); |
0 | 2134 __ bind(resolved); |
2135 } | |
2136 | |
2137 | |
2138 // The cache and index registers must be set before call | |
2139 void TemplateTable::load_field_cp_cache_entry(Register obj, | |
2140 Register cache, | |
2141 Register index, | |
2142 Register off, | |
2143 Register flags, | |
2144 bool is_static = false) { | |
2145 assert_different_registers(cache, index, flags, off); | |
2146 | |
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2147 ByteSize cp_base_offset = ConstantPoolCache::base_offset(); |
0 | 2148 // Field offset |
304 | 2149 __ movptr(off, Address(cache, index, Address::times_ptr, |
2150 in_bytes(cp_base_offset + ConstantPoolCacheEntry::f2_offset()))); | |
0 | 2151 // Flags |
304 | 2152 __ movl(flags, Address(cache, index, Address::times_ptr, |
0 | 2153 in_bytes(cp_base_offset + ConstantPoolCacheEntry::flags_offset()))); |
2154 | |
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2155 // klass overwrite register |
0 | 2156 if (is_static) { |
304 | 2157 __ movptr(obj, Address(cache, index, Address::times_ptr, |
2158 in_bytes(cp_base_offset + ConstantPoolCacheEntry::f1_offset()))); | |
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2159 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
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2160 __ movptr(obj, Address(obj, mirror_offset)); |
0 | 2161 } |
2162 } | |
2163 | |
2164 void TemplateTable::load_invoke_cp_cache_entry(int byte_no, | |
2165 Register method, | |
2166 Register itable_index, | |
2167 Register flags, | |
2168 bool is_invokevirtual, | |
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2169 bool is_invokevfinal, /*unused*/ |
1565 | 2170 bool is_invokedynamic) { |
0 | 2171 // setup registers |
2172 const Register cache = rcx; | |
2173 const Register index = rdx; | |
2174 assert_different_registers(method, flags); | |
2175 assert_different_registers(method, cache, index); | |
2176 assert_different_registers(itable_index, flags); | |
2177 assert_different_registers(itable_index, cache, index); | |
2178 // determine constant pool cache field offsets | |
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2179 assert(is_invokevirtual == (byte_no == f2_byte), "is_invokevirtual flag redundant"); |
0 | 2180 const int method_offset = in_bytes( |
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2181 ConstantPoolCache::base_offset() + |
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2182 ((byte_no == f2_byte) |
0 | 2183 ? ConstantPoolCacheEntry::f2_offset() |
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2184 : ConstantPoolCacheEntry::f1_offset())); |
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2185 const int flags_offset = in_bytes(ConstantPoolCache::base_offset() + |
0 | 2186 ConstantPoolCacheEntry::flags_offset()); |
2187 // access constant pool cache fields | |
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2188 const int index_offset = in_bytes(ConstantPoolCache::base_offset() + |
0 | 2189 ConstantPoolCacheEntry::f2_offset()); |
2190 | |
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2191 size_t index_size = (is_invokedynamic ? sizeof(u4) : sizeof(u2)); |
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2192 resolve_cache_and_index(byte_no, cache, index, index_size); |
1565 | 2193 __ movptr(method, Address(cache, index, Address::times_ptr, method_offset)); |
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2194 |
0 | 2195 if (itable_index != noreg) { |
304 | 2196 __ movptr(itable_index, Address(cache, index, Address::times_ptr, index_offset)); |
0 | 2197 } |
1565 | 2198 __ movl(flags, Address(cache, index, Address::times_ptr, flags_offset)); |
0 | 2199 } |
2200 | |
2201 | |
2202 // The registers cache and index expected to be set before call. | |
2203 // Correct values of the cache and index registers are preserved. | |
2204 void TemplateTable::jvmti_post_field_access(Register cache, | |
2205 Register index, | |
2206 bool is_static, | |
2207 bool has_tos) { | |
2208 if (JvmtiExport::can_post_field_access()) { | |
2209 // Check to see if a field access watch has been set before we take | |
2210 // the time to call into the VM. | |
2211 Label L1; | |
2212 assert_different_registers(cache, index, rax); | |
2213 __ mov32(rax, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2214 __ testl(rax,rax); | |
2215 __ jcc(Assembler::zero, L1); | |
2216 | |
2217 // cache entry pointer | |
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2218 __ addptr(cache, in_bytes(ConstantPoolCache::base_offset())); |
0 | 2219 __ shll(index, LogBytesPerWord); |
304 | 2220 __ addptr(cache, index); |
0 | 2221 if (is_static) { |
304 | 2222 __ xorptr(rax, rax); // NULL object reference |
0 | 2223 } else { |
2224 __ pop(atos); // Get the object | |
2225 __ verify_oop(rax); | |
2226 __ push(atos); // Restore stack state | |
2227 } | |
2228 // rax,: object pointer or NULL | |
2229 // cache: cache entry pointer | |
2230 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), | |
2231 rax, cache); | |
2232 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2233 __ bind(L1); | |
2234 } | |
2235 } | |
2236 | |
2237 void TemplateTable::pop_and_check_object(Register r) { | |
2238 __ pop_ptr(r); | |
2239 __ null_check(r); // for field access must check obj. | |
2240 __ verify_oop(r); | |
2241 } | |
2242 | |
2243 void TemplateTable::getfield_or_static(int byte_no, bool is_static) { | |
2244 transition(vtos, vtos); | |
2245 | |
2246 const Register cache = rcx; | |
2247 const Register index = rdx; | |
2248 const Register obj = rcx; | |
2249 const Register off = rbx; | |
2250 const Register flags = rax; | |
2251 | |
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2252 resolve_cache_and_index(byte_no, cache, index, sizeof(u2)); |
0 | 2253 jvmti_post_field_access(cache, index, is_static, false); |
2254 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2255 | |
2256 if (!is_static) pop_and_check_object(obj); | |
2257 | |
2258 const Address lo(obj, off, Address::times_1, 0*wordSize); | |
2259 const Address hi(obj, off, Address::times_1, 1*wordSize); | |
2260 | |
23614 | 2261 Label Done, notByte, notBool, notInt, notShort, notChar, notLong, notFloat, notObj, notDouble; |
0 | 2262 |
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2263 __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift); |
0 | 2264 assert(btos == 0, "change code, btos != 0"); |
2265 // btos | |
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2266 __ andptr(flags, ConstantPoolCacheEntry::tos_state_mask); |
0 | 2267 __ jcc(Assembler::notZero, notByte); |
2268 | |
2269 __ load_signed_byte(rax, lo ); | |
2270 __ push(btos); | |
2271 // Rewrite bytecode to be faster | |
2272 if (!is_static) { | |
2273 patch_bytecode(Bytecodes::_fast_bgetfield, rcx, rbx); | |
2274 } | |
2275 __ jmp(Done); | |
2276 | |
2277 __ bind(notByte); | |
23614 | 2278 |
2279 __ cmpl(flags, ztos); | |
2280 __ jcc(Assembler::notEqual, notBool); | |
2281 | |
2282 // ztos (same code as btos) | |
2283 __ load_signed_byte(rax, lo); | |
2284 __ push(ztos); | |
2285 // Rewrite bytecode to be faster | |
2286 if (!is_static) { | |
2287 // use btos rewriting, no truncating to t/f bit is needed for getfield. | |
2288 patch_bytecode(Bytecodes::_fast_bgetfield, rcx, rbx); | |
2289 } | |
2290 __ jmp(Done); | |
2291 | |
2292 __ bind(notBool); | |
2293 | |
0 | 2294 // itos |
2295 __ cmpl(flags, itos ); | |
2296 __ jcc(Assembler::notEqual, notInt); | |
2297 | |
2298 __ movl(rax, lo ); | |
2299 __ push(itos); | |
2300 // Rewrite bytecode to be faster | |
2301 if (!is_static) { | |
2302 patch_bytecode(Bytecodes::_fast_igetfield, rcx, rbx); | |
2303 } | |
2304 __ jmp(Done); | |
2305 | |
2306 __ bind(notInt); | |
2307 // atos | |
2308 __ cmpl(flags, atos ); | |
2309 __ jcc(Assembler::notEqual, notObj); | |
2310 | |
2311 __ movl(rax, lo ); | |
2312 __ push(atos); | |
2313 if (!is_static) { | |
2314 patch_bytecode(Bytecodes::_fast_agetfield, rcx, rbx); | |
2315 } | |
2316 __ jmp(Done); | |
2317 | |
2318 __ bind(notObj); | |
2319 // ctos | |
2320 __ cmpl(flags, ctos ); | |
2321 __ jcc(Assembler::notEqual, notChar); | |
2322 | |
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2323 __ load_unsigned_short(rax, lo ); |
0 | 2324 __ push(ctos); |
2325 if (!is_static) { | |
2326 patch_bytecode(Bytecodes::_fast_cgetfield, rcx, rbx); | |
2327 } | |
2328 __ jmp(Done); | |
2329 | |
2330 __ bind(notChar); | |
2331 // stos | |
2332 __ cmpl(flags, stos ); | |
2333 __ jcc(Assembler::notEqual, notShort); | |
2334 | |
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2335 __ load_signed_short(rax, lo ); |
0 | 2336 __ push(stos); |
2337 if (!is_static) { | |
2338 patch_bytecode(Bytecodes::_fast_sgetfield, rcx, rbx); | |
2339 } | |
2340 __ jmp(Done); | |
2341 | |
2342 __ bind(notShort); | |
2343 // ltos | |
2344 __ cmpl(flags, ltos ); | |
2345 __ jcc(Assembler::notEqual, notLong); | |
2346 | |
2347 // Generate code as if volatile. There just aren't enough registers to | |
2348 // save that information and this code is faster than the test. | |
2349 __ fild_d(lo); // Must load atomically | |
304 | 2350 __ subptr(rsp,2*wordSize); // Make space for store |
0 | 2351 __ fistp_d(Address(rsp,0)); |
304 | 2352 __ pop(rax); |
2353 __ pop(rdx); | |
0 | 2354 |
2355 __ push(ltos); | |
2356 // Don't rewrite to _fast_lgetfield for potential volatile case. | |
2357 __ jmp(Done); | |
2358 | |
2359 __ bind(notLong); | |
2360 // ftos | |
2361 __ cmpl(flags, ftos ); | |
2362 __ jcc(Assembler::notEqual, notFloat); | |
2363 | |
2364 __ fld_s(lo); | |
2365 __ push(ftos); | |
2366 if (!is_static) { | |
2367 patch_bytecode(Bytecodes::_fast_fgetfield, rcx, rbx); | |
2368 } | |
2369 __ jmp(Done); | |
2370 | |
2371 __ bind(notFloat); | |
2372 // dtos | |
2373 __ cmpl(flags, dtos ); | |
2374 __ jcc(Assembler::notEqual, notDouble); | |
2375 | |
2376 __ fld_d(lo); | |
2377 __ push(dtos); | |
2378 if (!is_static) { | |
2379 patch_bytecode(Bytecodes::_fast_dgetfield, rcx, rbx); | |
2380 } | |
2381 __ jmpb(Done); | |
2382 | |
2383 __ bind(notDouble); | |
2384 | |
2385 __ stop("Bad state"); | |
2386 | |
2387 __ bind(Done); | |
2388 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). | |
2389 // volatile_barrier( ); | |
2390 } | |
2391 | |
2392 | |
2393 void TemplateTable::getfield(int byte_no) { | |
2394 getfield_or_static(byte_no, false); | |
2395 } | |
2396 | |
2397 | |
2398 void TemplateTable::getstatic(int byte_no) { | |
2399 getfield_or_static(byte_no, true); | |
2400 } | |
2401 | |
2402 // The registers cache and index expected to be set before call. | |
2403 // The function may destroy various registers, just not the cache and index registers. | |
2404 void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) { | |
2405 | |
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2406 ByteSize cp_base_offset = ConstantPoolCache::base_offset(); |
0 | 2407 |
2408 if (JvmtiExport::can_post_field_modification()) { | |
2409 // Check to see if a field modification watch has been set before we take | |
2410 // the time to call into the VM. | |
2411 Label L1; | |
2412 assert_different_registers(cache, index, rax); | |
2413 __ mov32(rax, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
2414 __ testl(rax, rax); | |
2415 __ jcc(Assembler::zero, L1); | |
2416 | |
2417 // The cache and index registers have been already set. | |
2418 // This allows to eliminate this call but the cache and index | |
2419 // registers have to be correspondingly used after this line. | |
2420 __ get_cache_and_index_at_bcp(rax, rdx, 1); | |
2421 | |
2422 if (is_static) { | |
2423 // Life is simple. Null out the object pointer. | |
304 | 2424 __ xorptr(rbx, rbx); |
0 | 2425 } else { |
2426 // Life is harder. The stack holds the value on top, followed by the object. | |
2427 // We don't know the size of the value, though; it could be one or two words | |
2428 // depending on its type. As a result, we must find the type to determine where | |
2429 // the object is. | |
2430 Label two_word, valsize_known; | |
304 | 2431 __ movl(rcx, Address(rax, rdx, Address::times_ptr, in_bytes(cp_base_offset + |
0 | 2432 ConstantPoolCacheEntry::flags_offset()))); |
304 | 2433 __ mov(rbx, rsp); |
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2434 __ shrl(rcx, ConstantPoolCacheEntry::tos_state_shift); |
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2435 // Make sure we don't need to mask rcx after the above shift |
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2436 ConstantPoolCacheEntry::verify_tos_state_shift(); |
0 | 2437 __ cmpl(rcx, ltos); |
2438 __ jccb(Assembler::equal, two_word); | |
2439 __ cmpl(rcx, dtos); | |
2440 __ jccb(Assembler::equal, two_word); | |
304 | 2441 __ addptr(rbx, Interpreter::expr_offset_in_bytes(1)); // one word jvalue (not ltos, dtos) |
0 | 2442 __ jmpb(valsize_known); |
2443 | |
2444 __ bind(two_word); | |
304 | 2445 __ addptr(rbx, Interpreter::expr_offset_in_bytes(2)); // two words jvalue |
0 | 2446 |
2447 __ bind(valsize_known); | |
2448 // setup object pointer | |
304 | 2449 __ movptr(rbx, Address(rbx, 0)); |
0 | 2450 } |
2451 // cache entry pointer | |
304 | 2452 __ addptr(rax, in_bytes(cp_base_offset)); |
0 | 2453 __ shll(rdx, LogBytesPerWord); |
304 | 2454 __ addptr(rax, rdx); |
0 | 2455 // object (tos) |
304 | 2456 __ mov(rcx, rsp); |
0 | 2457 // rbx,: object pointer set up above (NULL if static) |
2458 // rax,: cache entry pointer | |
2459 // rcx: jvalue object on the stack | |
2460 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), | |
2461 rbx, rax, rcx); | |
2462 __ get_cache_and_index_at_bcp(cache, index, 1); | |
2463 __ bind(L1); | |
2464 } | |
2465 } | |
2466 | |
2467 | |
2468 void TemplateTable::putfield_or_static(int byte_no, bool is_static) { | |
2469 transition(vtos, vtos); | |
2470 | |
2471 const Register cache = rcx; | |
2472 const Register index = rdx; | |
2473 const Register obj = rcx; | |
2474 const Register off = rbx; | |
2475 const Register flags = rax; | |
2476 | |
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2477 resolve_cache_and_index(byte_no, cache, index, sizeof(u2)); |
0 | 2478 jvmti_post_field_mod(cache, index, is_static); |
2479 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
2480 | |
2481 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). | |
2482 // volatile_barrier( ); | |
2483 | |
2484 Label notVolatile, Done; | |
2485 __ movl(rdx, flags); | |
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2486 __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift); |
0 | 2487 __ andl(rdx, 0x1); |
2488 | |
2489 // field addresses | |
2490 const Address lo(obj, off, Address::times_1, 0*wordSize); | |
2491 const Address hi(obj, off, Address::times_1, 1*wordSize); | |
2492 | |
23614 | 2493 Label notByte, notBool, notInt, notShort, notChar, notLong, notFloat, notObj, notDouble; |
0 | 2494 |
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2495 __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift); |
0 | 2496 assert(btos == 0, "change code, btos != 0"); |
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2497 __ andl(flags, ConstantPoolCacheEntry::tos_state_mask); |
0 | 2498 __ jcc(Assembler::notZero, notByte); |
2499 | |
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2500 // btos |
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2501 { |
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2502 __ pop(btos); |
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2503 if (!is_static) pop_and_check_object(obj); |
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2504 __ movb(lo, rax); |
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2505 if (!is_static) { |
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2506 patch_bytecode(Bytecodes::_fast_bputfield, rcx, rbx, true, byte_no); |
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2507 } |
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2508 __ jmp(Done); |
0 | 2509 } |
2510 | |
2511 __ bind(notByte); | |
23614 | 2512 __ cmpl(flags, ztos); |
2513 __ jcc(Assembler::notEqual, notBool); | |
2514 | |
2515 // ztos | |
2516 { | |
2517 __ pop(ztos); | |
2518 if (!is_static) pop_and_check_object(obj); | |
2519 __ andl(rax, 0x1); | |
2520 __ movb(lo, rax); | |
2521 if (!is_static) { | |
2522 patch_bytecode(Bytecodes::_fast_zputfield, rcx, rbx, true, byte_no); | |
2523 } | |
2524 __ jmp(Done); | |
2525 } | |
2526 | |
2527 __ bind(notBool); | |
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2528 __ cmpl(flags, itos); |
0 | 2529 __ jcc(Assembler::notEqual, notInt); |
2530 | |
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2531 // itos |
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2532 { |
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2533 __ pop(itos); |
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2534 if (!is_static) pop_and_check_object(obj); |
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2535 __ movl(lo, rax); |
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2536 if (!is_static) { |
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2537 patch_bytecode(Bytecodes::_fast_iputfield, rcx, rbx, true, byte_no); |
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2538 } |
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2539 __ jmp(Done); |
0 | 2540 } |
2541 | |
2542 __ bind(notInt); | |
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2543 __ cmpl(flags, atos); |
0 | 2544 __ jcc(Assembler::notEqual, notObj); |
2545 | |
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2546 // atos |
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2547 { |
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2548 __ pop(atos); |
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2549 if (!is_static) pop_and_check_object(obj); |
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2550 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
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2551 if (!is_static) { |
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2552 patch_bytecode(Bytecodes::_fast_aputfield, rcx, rbx, true, byte_no); |
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2553 } |
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2554 __ jmp(Done); |
0 | 2555 } |
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2556 |
0 | 2557 __ bind(notObj); |
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2558 __ cmpl(flags, ctos); |
0 | 2559 __ jcc(Assembler::notEqual, notChar); |
2560 | |
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2561 // ctos |
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2562 { |
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2563 __ pop(ctos); |
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2564 if (!is_static) pop_and_check_object(obj); |
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2565 __ movw(lo, rax); |
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2566 if (!is_static) { |
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2567 patch_bytecode(Bytecodes::_fast_cputfield, rcx, rbx, true, byte_no); |
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2568 } |
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2569 __ jmp(Done); |
0 | 2570 } |
2571 | |
2572 __ bind(notChar); | |
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2573 __ cmpl(flags, stos); |
0 | 2574 __ jcc(Assembler::notEqual, notShort); |
2575 | |
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2576 // stos |
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2577 { |
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2578 __ pop(stos); |
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2579 if (!is_static) pop_and_check_object(obj); |
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2580 __ movw(lo, rax); |
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2581 if (!is_static) { |
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2582 patch_bytecode(Bytecodes::_fast_sputfield, rcx, rbx, true, byte_no); |
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2583 } |
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2584 __ jmp(Done); |
0 | 2585 } |
2586 | |
2587 __ bind(notShort); | |
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2588 __ cmpl(flags, ltos); |
0 | 2589 __ jcc(Assembler::notEqual, notLong); |
2590 | |
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2591 // ltos |
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2592 { |
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2593 Label notVolatileLong; |
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2594 __ testl(rdx, rdx); |
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2595 __ jcc(Assembler::zero, notVolatileLong); |
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2596 |
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2597 __ pop(ltos); // overwrites rdx, do this after testing volatile. |
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2598 if (!is_static) pop_and_check_object(obj); |
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2599 |
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2600 // Replace with real volatile test |
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2601 __ push(rdx); |
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2602 __ push(rax); // Must update atomically with FIST |
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2603 __ fild_d(Address(rsp,0)); // So load into FPU register |
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2604 __ fistp_d(lo); // and put into memory atomically |
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2605 __ addptr(rsp, 2*wordSize); |
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2606 // volatile_barrier(); |
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2607 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | |
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2608 Assembler::StoreStore)); |
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2609 // Don't rewrite volatile version |
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2610 __ jmp(notVolatile); |
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2611 |
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2612 __ bind(notVolatileLong); |
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2613 |
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2614 __ pop(ltos); // overwrites rdx |
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2615 if (!is_static) pop_and_check_object(obj); |
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2616 NOT_LP64(__ movptr(hi, rdx)); |
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2617 __ movptr(lo, rax); |
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2618 if (!is_static) { |
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2619 patch_bytecode(Bytecodes::_fast_lputfield, rcx, rbx, true, byte_no); |
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2620 } |
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2621 __ jmp(notVolatile); |
0 | 2622 } |
2623 | |
2624 __ bind(notLong); | |
3852
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2625 __ cmpl(flags, ftos); |
0 | 2626 __ jcc(Assembler::notEqual, notFloat); |
2627 | |
3852
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2628 // ftos |
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2629 { |
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2630 __ pop(ftos); |
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2631 if (!is_static) pop_and_check_object(obj); |
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2632 __ fstp_s(lo); |
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2633 if (!is_static) { |
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2634 patch_bytecode(Bytecodes::_fast_fputfield, rcx, rbx, true, byte_no); |
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2635 } |
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2636 __ jmp(Done); |
0 | 2637 } |
2638 | |
2639 __ bind(notFloat); | |
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2640 #ifdef ASSERT |
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2641 __ cmpl(flags, dtos); |
0 | 2642 __ jcc(Assembler::notEqual, notDouble); |
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2643 #endif |
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2644 |
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2645 // dtos |
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2646 { |
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2647 __ pop(dtos); |
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2648 if (!is_static) pop_and_check_object(obj); |
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2649 __ fstp_d(lo); |
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2650 if (!is_static) { |
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2651 patch_bytecode(Bytecodes::_fast_dputfield, rcx, rbx, true, byte_no); |
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2652 } |
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2653 __ jmp(Done); |
0 | 2654 } |
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2655 |
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2656 #ifdef ASSERT |
0 | 2657 __ bind(notDouble); |
2658 __ stop("Bad state"); | |
3852
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2659 #endif |
0 | 2660 |
2661 __ bind(Done); | |
2662 | |
2663 // Check for volatile store | |
2664 __ testl(rdx, rdx); | |
2665 __ jcc(Assembler::zero, notVolatile); | |
304 | 2666 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | |
2667 Assembler::StoreStore)); | |
0 | 2668 __ bind(notVolatile); |
2669 } | |
2670 | |
2671 | |
2672 void TemplateTable::putfield(int byte_no) { | |
2673 putfield_or_static(byte_no, false); | |
2674 } | |
2675 | |
2676 | |
2677 void TemplateTable::putstatic(int byte_no) { | |
2678 putfield_or_static(byte_no, true); | |
2679 } | |
2680 | |
2681 void TemplateTable::jvmti_post_fast_field_mod() { | |
2682 if (JvmtiExport::can_post_field_modification()) { | |
2683 // Check to see if a field modification watch has been set before we take | |
2684 // the time to call into the VM. | |
2685 Label L2; | |
5995
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2686 __ mov32(rcx, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); |
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2687 __ testl(rcx,rcx); |
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2688 __ jcc(Assembler::zero, L2); |
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2689 __ pop_ptr(rbx); // copy the object pointer from tos |
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2690 __ verify_oop(rbx); |
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2691 __ push_ptr(rbx); // put the object pointer back on tos |
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2692 |
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2693 // Save tos values before call_VM() clobbers them. Since we have |
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2694 // to do it for every data type, we use the saved values as the |
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2695 // jvalue object. |
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2696 switch (bytecode()) { // load values into the jvalue object |
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2697 case Bytecodes::_fast_aputfield: __ push_ptr(rax); break; |
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2698 case Bytecodes::_fast_bputfield: // fall through |
23614 | 2699 case Bytecodes::_fast_zputfield: // fall through |
5995
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2700 case Bytecodes::_fast_sputfield: // fall through |
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2701 case Bytecodes::_fast_cputfield: // fall through |
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2702 case Bytecodes::_fast_iputfield: __ push_i(rax); break; |
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2703 case Bytecodes::_fast_dputfield: __ push_d(); break; |
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2704 case Bytecodes::_fast_fputfield: __ push_f(); break; |
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2705 case Bytecodes::_fast_lputfield: __ push_l(rax); break; |
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2706 |
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2707 default: |
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2708 ShouldNotReachHere(); |
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2709 } |
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2710 __ mov(rcx, rsp); // points to jvalue on the stack |
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2711 // access constant pool cache entry |
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2712 __ get_cache_entry_pointer_at_bcp(rax, rdx, 1); |
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2713 __ verify_oop(rbx); |
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2714 // rbx,: object pointer copied above |
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2715 // rax,: cache entry pointer |
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2716 // rcx: jvalue object on the stack |
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2717 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), rbx, rax, rcx); |
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2718 |
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2719 switch (bytecode()) { // restore tos values |
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2720 case Bytecodes::_fast_aputfield: __ pop_ptr(rax); break; |
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2721 case Bytecodes::_fast_bputfield: // fall through |
23614 | 2722 case Bytecodes::_fast_zputfield: // fall through |
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2723 case Bytecodes::_fast_sputfield: // fall through |
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2724 case Bytecodes::_fast_cputfield: // fall through |
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2725 case Bytecodes::_fast_iputfield: __ pop_i(rax); break; |
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2726 case Bytecodes::_fast_dputfield: __ pop_d(); break; |
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2727 case Bytecodes::_fast_fputfield: __ pop_f(); break; |
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2728 case Bytecodes::_fast_lputfield: __ pop_l(rax); break; |
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2729 } |
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2730 __ bind(L2); |
0 | 2731 } |
2732 } | |
2733 | |
2734 void TemplateTable::fast_storefield(TosState state) { | |
2735 transition(state, vtos); | |
2736 | |
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2737 ByteSize base = ConstantPoolCache::base_offset(); |
0 | 2738 |
2739 jvmti_post_fast_field_mod(); | |
2740 | |
2741 // access constant pool cache | |
2742 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2743 | |
2744 // test for volatile with rdx but rdx is tos register for lputfield. | |
304 | 2745 if (bytecode() == Bytecodes::_fast_lputfield) __ push(rdx); |
2746 __ movl(rdx, Address(rcx, rbx, Address::times_ptr, in_bytes(base + | |
0 | 2747 ConstantPoolCacheEntry::flags_offset()))); |
2748 | |
2749 // replace index with field offset from cache entry | |
304 | 2750 __ movptr(rbx, Address(rcx, rbx, Address::times_ptr, in_bytes(base + ConstantPoolCacheEntry::f2_offset()))); |
0 | 2751 |
2752 // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO). | |
2753 // volatile_barrier( ); | |
2754 | |
2755 Label notVolatile, Done; | |
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2756 __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift); |
0 | 2757 __ andl(rdx, 0x1); |
2758 // Check for volatile store | |
2759 __ testl(rdx, rdx); | |
2760 __ jcc(Assembler::zero, notVolatile); | |
2761 | |
304 | 2762 if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx); |
0 | 2763 |
2764 // Get object from stack | |
2765 pop_and_check_object(rcx); | |
2766 | |
2767 // field addresses | |
2768 const Address lo(rcx, rbx, Address::times_1, 0*wordSize); | |
2769 const Address hi(rcx, rbx, Address::times_1, 1*wordSize); | |
2770 | |
2771 // access field | |
2772 switch (bytecode()) { | |
23614 | 2773 case Bytecodes::_fast_zputfield: __ andl(rax, 0x1); // boolean is true if LSB is 1 |
2774 // fall through to bputfield | |
0 | 2775 case Bytecodes::_fast_bputfield: __ movb(lo, rax); break; |
2776 case Bytecodes::_fast_sputfield: // fall through | |
2777 case Bytecodes::_fast_cputfield: __ movw(lo, rax); break; | |
2778 case Bytecodes::_fast_iputfield: __ movl(lo, rax); break; | |
304 | 2779 case Bytecodes::_fast_lputfield: |
2780 NOT_LP64(__ movptr(hi, rdx)); | |
2781 __ movptr(lo, rax); | |
2782 break; | |
0 | 2783 case Bytecodes::_fast_fputfield: __ fstp_s(lo); break; |
2784 case Bytecodes::_fast_dputfield: __ fstp_d(lo); break; | |
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2785 case Bytecodes::_fast_aputfield: { |
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2786 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
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2787 break; |
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|
2788 } |
0 | 2789 default: |
2790 ShouldNotReachHere(); | |
2791 } | |
2792 | |
2793 Label done; | |
304 | 2794 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | |
2795 Assembler::StoreStore)); | |
342
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2796 // Barriers are so large that short branch doesn't reach! |
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2797 __ jmp(done); |
0 | 2798 |
2799 // Same code as above, but don't need rdx to test for volatile. | |
2800 __ bind(notVolatile); | |
2801 | |
304 | 2802 if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx); |
0 | 2803 |
2804 // Get object from stack | |
2805 pop_and_check_object(rcx); | |
2806 | |
2807 // access field | |
2808 switch (bytecode()) { | |
23614 | 2809 case Bytecodes::_fast_zputfield: __ andl(rax, 0x1); // boolean is true if LSB is 1 |
2810 // fall through to bputfield | |
0 | 2811 case Bytecodes::_fast_bputfield: __ movb(lo, rax); break; |
2812 case Bytecodes::_fast_sputfield: // fall through | |
2813 case Bytecodes::_fast_cputfield: __ movw(lo, rax); break; | |
2814 case Bytecodes::_fast_iputfield: __ movl(lo, rax); break; | |
304 | 2815 case Bytecodes::_fast_lputfield: |
2816 NOT_LP64(__ movptr(hi, rdx)); | |
2817 __ movptr(lo, rax); | |
2818 break; | |
0 | 2819 case Bytecodes::_fast_fputfield: __ fstp_s(lo); break; |
2820 case Bytecodes::_fast_dputfield: __ fstp_d(lo); break; | |
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2821 case Bytecodes::_fast_aputfield: { |
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2822 do_oop_store(_masm, lo, rax, _bs->kind(), false); |
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2823 break; |
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2824 } |
0 | 2825 default: |
2826 ShouldNotReachHere(); | |
2827 } | |
2828 __ bind(done); | |
2829 } | |
2830 | |
2831 | |
2832 void TemplateTable::fast_accessfield(TosState state) { | |
2833 transition(atos, state); | |
2834 | |
2835 // do the JVMTI work here to avoid disturbing the register state below | |
2836 if (JvmtiExport::can_post_field_access()) { | |
2837 // Check to see if a field access watch has been set before we take | |
2838 // the time to call into the VM. | |
2839 Label L1; | |
2840 __ mov32(rcx, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
2841 __ testl(rcx,rcx); | |
2842 __ jcc(Assembler::zero, L1); | |
2843 // access constant pool cache entry | |
2844 __ get_cache_entry_pointer_at_bcp(rcx, rdx, 1); | |
2845 __ push_ptr(rax); // save object pointer before call_VM() clobbers it | |
2846 __ verify_oop(rax); | |
2847 // rax,: object pointer copied above | |
2848 // rcx: cache entry pointer | |
2849 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), rax, rcx); | |
2850 __ pop_ptr(rax); // restore object pointer | |
2851 __ bind(L1); | |
2852 } | |
2853 | |
2854 // access constant pool cache | |
2855 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
2856 // replace index with field offset from cache entry | |
304 | 2857 __ movptr(rbx, Address(rcx, |
2858 rbx, | |
2859 Address::times_ptr, | |
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2860 in_bytes(ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::f2_offset()))); |
0 | 2861 |
2862 | |
2863 // rax,: object | |
2864 __ verify_oop(rax); | |
2865 __ null_check(rax); | |
2866 // field addresses | |
2867 const Address lo = Address(rax, rbx, Address::times_1, 0*wordSize); | |
2868 const Address hi = Address(rax, rbx, Address::times_1, 1*wordSize); | |
2869 | |
2870 // access field | |
2871 switch (bytecode()) { | |
304 | 2872 case Bytecodes::_fast_bgetfield: __ movsbl(rax, lo ); break; |
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2873 case Bytecodes::_fast_sgetfield: __ load_signed_short(rax, lo ); break; |
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2874 case Bytecodes::_fast_cgetfield: __ load_unsigned_short(rax, lo ); break; |
0 | 2875 case Bytecodes::_fast_igetfield: __ movl(rax, lo); break; |
2876 case Bytecodes::_fast_lgetfield: __ stop("should not be rewritten"); break; | |
2877 case Bytecodes::_fast_fgetfield: __ fld_s(lo); break; | |
2878 case Bytecodes::_fast_dgetfield: __ fld_d(lo); break; | |
304 | 2879 case Bytecodes::_fast_agetfield: __ movptr(rax, lo); __ verify_oop(rax); break; |
0 | 2880 default: |
2881 ShouldNotReachHere(); | |
2882 } | |
2883 | |
2884 // Doug Lea believes this is not needed with current Sparcs(TSO) and Intel(PSO) | |
2885 // volatile_barrier( ); | |
2886 } | |
2887 | |
2888 void TemplateTable::fast_xaccess(TosState state) { | |
2889 transition(vtos, state); | |
2890 // get receiver | |
304 | 2891 __ movptr(rax, aaddress(0)); |
0 | 2892 // access constant pool cache |
2893 __ get_cache_and_index_at_bcp(rcx, rdx, 2); | |
304 | 2894 __ movptr(rbx, Address(rcx, |
2895 rdx, | |
2896 Address::times_ptr, | |
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2897 in_bytes(ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::f2_offset()))); |
0 | 2898 // make sure exception is reported in correct bcp range (getfield is next instruction) |
2899 __ increment(rsi); | |
2900 __ null_check(rax); | |
2901 const Address lo = Address(rax, rbx, Address::times_1, 0*wordSize); | |
2902 if (state == itos) { | |
2903 __ movl(rax, lo); | |
2904 } else if (state == atos) { | |
304 | 2905 __ movptr(rax, lo); |
0 | 2906 __ verify_oop(rax); |
2907 } else if (state == ftos) { | |
2908 __ fld_s(lo); | |
2909 } else { | |
2910 ShouldNotReachHere(); | |
2911 } | |
2912 __ decrement(rsi); | |
2913 } | |
2914 | |
2915 | |
2916 | |
2917 //---------------------------------------------------------------------------------------------------- | |
2918 // Calls | |
2919 | |
2920 void TemplateTable::count_calls(Register method, Register temp) { | |
2921 // implemented elsewhere | |
2922 ShouldNotReachHere(); | |
2923 } | |
2924 | |
2925 | |
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2926 void TemplateTable::prepare_invoke(int byte_no, |
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2927 Register method, // linked method (or i-klass) |
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2928 Register index, // itable index, MethodType, etc. |
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2929 Register recv, // if caller wants to see it |
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2930 Register flags // if caller wants to test it |
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2931 ) { |
0 | 2932 // determine flags |
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2933 const Bytecodes::Code code = bytecode(); |
0 | 2934 const bool is_invokeinterface = code == Bytecodes::_invokeinterface; |
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2935 const bool is_invokedynamic = code == Bytecodes::_invokedynamic; |
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2936 const bool is_invokehandle = code == Bytecodes::_invokehandle; |
0 | 2937 const bool is_invokevirtual = code == Bytecodes::_invokevirtual; |
2938 const bool is_invokespecial = code == Bytecodes::_invokespecial; | |
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2939 const bool load_receiver = (recv != noreg); |
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2940 const bool save_flags = (flags != noreg); |
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2941 assert(load_receiver == (code != Bytecodes::_invokestatic && code != Bytecodes::_invokedynamic), ""); |
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2942 assert(save_flags == (is_invokeinterface || is_invokevirtual), "need flags for vfinal"); |
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2943 assert(flags == noreg || flags == rdx, ""); |
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2944 assert(recv == noreg || recv == rcx, ""); |
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2945 |
0 | 2946 // setup registers & access constant pool cache |
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2947 if (recv == noreg) recv = rcx; |
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2948 if (flags == noreg) flags = rdx; |
0 | 2949 assert_different_registers(method, index, recv, flags); |
2950 | |
2951 // save 'interpreter return address' | |
2952 __ save_bcp(); | |
2953 | |
1565 | 2954 load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual, false, is_invokedynamic); |
0 | 2955 |
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2956 // maybe push appendix to arguments (just before return address) |
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2957 if (is_invokedynamic || is_invokehandle) { |
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2958 Label L_no_push; |
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2959 __ testl(flags, (1 << ConstantPoolCacheEntry::has_appendix_shift)); |
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2960 __ jccb(Assembler::zero, L_no_push); |
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2961 // Push the appendix as a trailing parameter. |
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2962 // This must be done before we get the receiver, |
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2963 // since the parameter_size includes it. |
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2964 __ push(rbx); |
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2965 __ mov(rbx, index); |
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2966 assert(ConstantPoolCacheEntry::_indy_resolved_references_appendix_offset == 0, "appendix expected at index+0"); |
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2967 __ load_resolved_reference_at_index(index, rbx); |
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2968 __ pop(rbx); |
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2969 __ push(index); // push appendix (MethodType, CallSite, etc.) |
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2970 __ bind(L_no_push); |
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2971 } |
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2972 |
0 | 2973 // load receiver if needed (note: no return address pushed yet) |
2974 if (load_receiver) { | |
2975 __ movl(recv, flags); | |
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2976 __ andl(recv, ConstantPoolCacheEntry::parameter_size_mask); |
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2977 const int no_return_pc_pushed_yet = -1; // argument slot correction before we push return address |
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2978 const int receiver_is_at_end = -1; // back off one slot to get receiver |
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2979 Address recv_addr = __ argument_address(recv, no_return_pc_pushed_yet + receiver_is_at_end); |
1304 | 2980 __ movptr(recv, recv_addr); |
2981 __ verify_oop(recv); | |
0 | 2982 } |
2983 | |
2984 if (save_flags) { | |
304 | 2985 __ mov(rsi, flags); |
0 | 2986 } |
2987 | |
2988 // compute return type | |
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2989 __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift); |
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2990 // Make sure we don't need to mask flags after the above shift |
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2991 ConstantPoolCacheEntry::verify_tos_state_shift(); |
0 | 2992 // load return address |
304 | 2993 { |
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2994 const address table_addr = (address) Interpreter::invoke_return_entry_table_for(code); |
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2995 ExternalAddress table(table_addr); |
304 | 2996 __ movptr(flags, ArrayAddress(table, Address(noreg, flags, Address::times_ptr))); |
0 | 2997 } |
2998 | |
2999 // push return address | |
304 | 3000 __ push(flags); |
0 | 3001 |
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3002 // Restore flags value from the constant pool cache, and restore rsi |
0 | 3003 // for later null checks. rsi is the bytecode pointer |
3004 if (save_flags) { | |
304 | 3005 __ mov(flags, rsi); |
0 | 3006 __ restore_bcp(); |
3007 } | |
3008 } | |
3009 | |
3010 | |
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3011 void TemplateTable::invokevirtual_helper(Register index, |
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3012 Register recv, |
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3013 Register flags) { |
0 | 3014 // Uses temporary registers rax, rdx |
3015 assert_different_registers(index, recv, rax, rdx); | |
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3016 assert(index == rbx, ""); |
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3017 assert(recv == rcx, ""); |
0 | 3018 |
3019 // Test for an invoke of a final method | |
3020 Label notFinal; | |
3021 __ movl(rax, flags); | |
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3022 __ andl(rax, (1 << ConstantPoolCacheEntry::is_vfinal_shift)); |
0 | 3023 __ jcc(Assembler::zero, notFinal); |
3024 | |
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3025 const Register method = index; // method must be rbx |
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3026 assert(method == rbx, |
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3027 "Method* must be rbx for interpreter calling convention"); |
0 | 3028 |
3029 // do the call - the index is actually the method to call | |
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3030 // that is, f2 is a vtable index if !is_vfinal, else f2 is a Method* |
0 | 3031 |
3032 // It's final, need a null check here! | |
3033 __ null_check(recv); | |
3034 | |
3035 // profile this call | |
3036 __ profile_final_call(rax); | |
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3037 __ profile_arguments_type(rax, method, rsi, true); |
0 | 3038 |
3039 __ jump_from_interpreted(method, rax); | |
3040 | |
3041 __ bind(notFinal); | |
3042 | |
3043 // get receiver klass | |
3044 __ null_check(recv, oopDesc::klass_offset_in_bytes()); | |
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3045 __ load_klass(rax, recv); |
0 | 3046 |
3047 // profile this call | |
3048 __ profile_virtual_call(rax, rdi, rdx); | |
3049 | |
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3050 // get target Method* & entry point |
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3051 __ lookup_virtual_method(rax, index, method); |
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3052 __ profile_arguments_type(rdx, method, rsi, true); |
0 | 3053 __ jump_from_interpreted(method, rdx); |
3054 } | |
3055 | |
3056 | |
3057 void TemplateTable::invokevirtual(int byte_no) { | |
3058 transition(vtos, vtos); | |
1565 | 3059 assert(byte_no == f2_byte, "use this argument"); |
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3060 prepare_invoke(byte_no, |
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3061 rbx, // method or vtable index |
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3062 noreg, // unused itable index |
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3063 rcx, rdx); // recv, flags |
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3064 |
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3065 // rbx: index |
0 | 3066 // rcx: receiver |
3067 // rdx: flags | |
3068 | |
3069 invokevirtual_helper(rbx, rcx, rdx); | |
3070 } | |
3071 | |
3072 | |
3073 void TemplateTable::invokespecial(int byte_no) { | |
3074 transition(vtos, vtos); | |
1565 | 3075 assert(byte_no == f1_byte, "use this argument"); |
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3076 prepare_invoke(byte_no, rbx, noreg, // get f1 Method* |
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3077 rcx); // get receiver also for null check |
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3078 __ verify_oop(rcx); |
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3079 __ null_check(rcx); |
0 | 3080 // do the call |
3081 __ profile_call(rax); | |
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3082 __ profile_arguments_type(rax, rbx, rsi, false); |
0 | 3083 __ jump_from_interpreted(rbx, rax); |
3084 } | |
3085 | |
3086 | |
3087 void TemplateTable::invokestatic(int byte_no) { | |
3088 transition(vtos, vtos); | |
1565 | 3089 assert(byte_no == f1_byte, "use this argument"); |
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3090 prepare_invoke(byte_no, rbx); // get f1 Method* |
0 | 3091 // do the call |
3092 __ profile_call(rax); | |
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3093 __ profile_arguments_type(rax, rbx, rsi, false); |
0 | 3094 __ jump_from_interpreted(rbx, rax); |
3095 } | |
3096 | |
3097 | |
3098 void TemplateTable::fast_invokevfinal(int byte_no) { | |
3099 transition(vtos, vtos); | |
1565 | 3100 assert(byte_no == f2_byte, "use this argument"); |
0 | 3101 __ stop("fast_invokevfinal not used on x86"); |
3102 } | |
3103 | |
3104 | |
3105 void TemplateTable::invokeinterface(int byte_no) { | |
3106 transition(vtos, vtos); | |
1565 | 3107 assert(byte_no == f1_byte, "use this argument"); |
6725
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6964458: Reimplement class meta-data storage to use native memory
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|
3108 prepare_invoke(byte_no, rax, rbx, // get f1 Klass*, f2 itable index |
6266
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7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
3109 rcx, rdx); // recv, flags |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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diff
changeset
|
3110 |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
3111 // rax: interface klass (from f1) |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
3112 // rbx: itable index (from f2) |
0 | 3113 // rcx: receiver |
3114 // rdx: flags | |
3115 | |
3116 // Special case of invokeinterface called for virtual method of | |
3117 // java.lang.Object. See cpCacheOop.cpp for details. | |
3118 // This code isn't produced by javac, but could be produced by | |
3119 // another compliant java compiler. | |
3120 Label notMethod; | |
3121 __ movl(rdi, rdx); | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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5995
diff
changeset
|
3122 __ andl(rdi, (1 << ConstantPoolCacheEntry::is_forced_virtual_shift)); |
0 | 3123 __ jcc(Assembler::zero, notMethod); |
3124 | |
3125 invokevirtual_helper(rbx, rcx, rdx); | |
3126 __ bind(notMethod); | |
3127 | |
3128 // Get receiver klass into rdx - also a null check | |
3129 __ restore_locals(); // restore rdi | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3130 __ null_check(rcx, oopDesc::klass_offset_in_bytes()); |
3275
bbe95b4337f1
7036960: TemplateTable::fast_aldc in templateTable_x86_64.cpp uses movptr instead of load_klass
twisti
parents:
2416
diff
changeset
|
3131 __ load_klass(rdx, rcx); |
0 | 3132 |
3133 // profile this call | |
3134 __ profile_virtual_call(rdx, rsi, rdi); | |
3135 | |
623
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3136 Label no_such_interface, no_such_method; |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3137 |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3138 __ lookup_interface_method(// inputs: rec. class, interface, itable index |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3139 rdx, rax, rbx, |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
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622
diff
changeset
|
3140 // outputs: method, scan temp. reg |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
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622
diff
changeset
|
3141 rbx, rsi, |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3142 no_such_interface); |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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622
diff
changeset
|
3143 |
6725
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diff
changeset
|
3144 // rbx: Method* to call |
623
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
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622
diff
changeset
|
3145 // rcx: receiver |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
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diff
changeset
|
3146 // Check for abstract method error |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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parents:
622
diff
changeset
|
3147 // Note: This should be done more efficiently via a throw_abstract_method_error |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
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622
diff
changeset
|
3148 // interpreter entry point and a conditional jump to it in case of a null |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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622
diff
changeset
|
3149 // method. |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
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622
diff
changeset
|
3150 __ testptr(rbx, rbx); |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3151 __ jcc(Assembler::zero, no_such_method); |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3152 |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
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10105
diff
changeset
|
3153 __ profile_arguments_type(rdx, rbx, rsi, true); |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10105
diff
changeset
|
3154 |
623
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3155 // do the call |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
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diff
changeset
|
3156 // rcx: receiver |
6725
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6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3157 // rbx,: Method* |
623
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3158 __ jump_from_interpreted(rbx, rdx); |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3159 __ should_not_reach_here(); |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3160 |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3161 // exception handling code follows... |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3162 // note: must restore interpreter registers to canonical |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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parents:
622
diff
changeset
|
3163 // state for exception handling to work correctly! |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3164 |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
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parents:
622
diff
changeset
|
3165 __ bind(no_such_method); |
0 | 3166 // throw exception |
623
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3167 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3168 __ restore_bcp(); // rsi must be correct for exception handler (was destroyed) |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3169 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3170 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError)); |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3171 // the call_VM checks for exception, so we should never return here. |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3172 __ should_not_reach_here(); |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3173 |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3174 __ bind(no_such_interface); |
9adddb8c0fc8
6812831: factor duplicated assembly code for megamorphic invokeinterface (for 6655638)
jrose
parents:
622
diff
changeset
|
3175 // throw exception |
304 | 3176 __ pop(rbx); // pop return address (pushed by prepare_invoke) |
0 | 3177 __ restore_bcp(); // rsi must be correct for exception handler (was destroyed) |
3178 __ restore_locals(); // make sure locals pointer is correct as well (was destroyed) | |
3179 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
3180 InterpreterRuntime::throw_IncompatibleClassChangeError)); | |
3181 // the call_VM checks for exception, so we should never return here. | |
3182 __ should_not_reach_here(); | |
3183 } | |
3184 | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3185 void TemplateTable::invokehandle(int byte_no) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3186 transition(vtos, vtos); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3187 assert(byte_no == f1_byte, "use this argument"); |
6822
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6740
diff
changeset
|
3188 const Register rbx_method = rbx; |
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6740
diff
changeset
|
3189 const Register rax_mtype = rax; |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3190 const Register rcx_recv = rcx; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3191 const Register rdx_flags = rdx; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3192 |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3193 if (!EnableInvokeDynamic) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3194 // rewriter does not generate this bytecode |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3195 __ should_not_reach_here(); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3196 return; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3197 } |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3198 |
6822
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6740
diff
changeset
|
3199 prepare_invoke(byte_no, rbx_method, rax_mtype, rcx_recv); |
6740
75f33eecc1b3
7196681: NPG: Some JSR 292 tests crash in Windows exception handler
coleenp
parents:
6725
diff
changeset
|
3200 __ verify_method_ptr(rbx_method); |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3201 __ verify_oop(rcx_recv); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3202 __ null_check(rcx_recv); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3203 |
6822
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6740
diff
changeset
|
3204 // rax: MethodType object (from cpool->resolved_references[f1], if necessary) |
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6740
diff
changeset
|
3205 // rbx: MH.invokeExact_MT method (from f2) |
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6740
diff
changeset
|
3206 |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3207 // Note: rax_mtype is already pushed (if necessary) by prepare_invoke |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3208 |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3209 // FIXME: profile the LambdaForm also |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3210 __ profile_final_call(rax); |
12875
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
10105
diff
changeset
|
3211 __ profile_arguments_type(rdx, rbx_method, rsi, true); |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3212 |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3213 __ jump_from_interpreted(rbx_method, rdx); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3214 } |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3215 |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
5995
diff
changeset
|
3216 |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
628
diff
changeset
|
3217 void TemplateTable::invokedynamic(int byte_no) { |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
628
diff
changeset
|
3218 transition(vtos, vtos); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
3219 assert(byte_no == f1_byte, "use this argument"); |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
628
diff
changeset
|
3220 |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
628
diff
changeset
|
3221 if (!EnableInvokeDynamic) { |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
628
diff
changeset
|
3222 // We should not encounter this bytecode if !EnableInvokeDynamic. |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
628
diff
changeset
|
3223 // The verifier will stop it. However, if we get past the verifier, |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
628
diff
changeset
|
3224 // this will stop the thread in a reasonable way, without crashing the JVM. |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
628
diff
changeset
|
3225 __ call_VM(noreg, CAST_FROM_FN_PTR(address, |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
628
diff
changeset
|
3226 InterpreterRuntime::throw_IncompatibleClassChangeError)); |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
628
diff
changeset
|
3227 // the call_VM checks for exception, so we should never return here. |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
628
diff
changeset
|
3228 __ should_not_reach_here(); |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
628
diff
changeset
|
3229 return; |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
628
diff
changeset
|
3230 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
628
diff
changeset
|
3231 |
6266
1d7922586cf6
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|
3232 const Register rbx_method = rbx; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
3233 const Register rax_callsite = rax; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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5995
diff
changeset
|
3234 |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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5995
diff
changeset
|
3235 prepare_invoke(byte_no, rbx_method, rax_callsite); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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5995
diff
changeset
|
3236 |
6822
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
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6740
diff
changeset
|
3237 // rax: CallSite object (from cpool->resolved_references[f1]) |
6266
1d7922586cf6
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twisti
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5995
diff
changeset
|
3238 // rbx: MH.linkToCallSite method (from f2) |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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5995
diff
changeset
|
3239 |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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5995
diff
changeset
|
3240 // Note: rax_callsite is already pushed by prepare_invoke |
1846 | 3241 |
3279
08ccee2c4dbf
6993078: JSR 292 too many pushes: Lesp points into register window
twisti
parents:
3275
diff
changeset
|
3242 // %%% 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
|
3243 // profile this call |
08ccee2c4dbf
6993078: JSR 292 too many pushes: Lesp points into register window
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3275
diff
changeset
|
3244 __ profile_call(rsi); |
12875
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8023657: New type profiling points: arguments to call
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parents:
10105
diff
changeset
|
3245 __ profile_arguments_type(rdx, rbx, rsi, false); |
3279
08ccee2c4dbf
6993078: JSR 292 too many pushes: Lesp points into register window
twisti
parents:
3275
diff
changeset
|
3246 |
08ccee2c4dbf
6993078: JSR 292 too many pushes: Lesp points into register window
twisti
parents:
3275
diff
changeset
|
3247 __ verify_oop(rax_callsite); |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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5995
diff
changeset
|
3248 |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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5995
diff
changeset
|
3249 __ jump_from_interpreted(rbx_method, rdx); |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
628
diff
changeset
|
3250 } |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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diff
changeset
|
3251 |
0 | 3252 //---------------------------------------------------------------------------------------------------- |
3253 // Allocation | |
3254 | |
3255 void TemplateTable::_new() { | |
3256 transition(vtos, atos); | |
3257 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3258 Label slow_case; | |
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3259 Label slow_case_no_pop; |
0 | 3260 Label done; |
3261 Label initialize_header; | |
3262 Label initialize_object; // including clearing the fields | |
3263 Label allocate_shared; | |
3264 | |
3265 __ get_cpool_and_tags(rcx, rax); | |
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3266 |
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3267 // Make sure the class we're about to instantiate has been resolved. |
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3268 // This is done before loading InstanceKlass to be consistent with the order |
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3269 // how Constant Pool is updated (see ConstantPool::klass_at_put) |
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3270 const int tags_offset = Array<u1>::base_offset_in_bytes(); |
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3271 __ cmpb(Address(rax, rdx, Address::times_1, tags_offset), JVM_CONSTANT_Class); |
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3272 __ jcc(Assembler::notEqual, slow_case_no_pop); |
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3273 |
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3274 // get InstanceKlass |
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3275 __ movptr(rcx, Address(rcx, rdx, Address::times_ptr, sizeof(ConstantPool))); |
304 | 3276 __ push(rcx); // save the contexts of klass for initializing the header |
0 | 3277 |
3278 // make sure klass is initialized & doesn't have finalizer | |
3279 // make sure klass is fully initialized | |
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3280 __ cmpb(Address(rcx, InstanceKlass::init_state_offset()), InstanceKlass::fully_initialized); |
0 | 3281 __ jcc(Assembler::notEqual, slow_case); |
3282 | |
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3283 // get instance_size in InstanceKlass (scaled to a count of bytes) |
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3284 __ movl(rdx, Address(rcx, Klass::layout_helper_offset())); |
0 | 3285 // test to see if it has a finalizer or is malformed in some way |
3286 __ testl(rdx, Klass::_lh_instance_slow_path_bit); | |
3287 __ jcc(Assembler::notZero, slow_case); | |
3288 | |
3289 // | |
3290 // Allocate the instance | |
3291 // 1) Try to allocate in the TLAB | |
3292 // 2) if fail and the object is large allocate in the shared Eden | |
3293 // 3) if the above fails (or is not applicable), go to a slow case | |
3294 // (creates a new TLAB, etc.) | |
3295 | |
3296 const bool allow_shared_alloc = | |
3297 Universe::heap()->supports_inline_contig_alloc() && !CMSIncrementalMode; | |
3298 | |
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3299 const Register thread = rcx; |
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3300 if (UseTLAB || allow_shared_alloc) { |
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3301 __ get_thread(thread); |
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3302 } |
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3303 |
0 | 3304 if (UseTLAB) { |
304 | 3305 __ movptr(rax, Address(thread, in_bytes(JavaThread::tlab_top_offset()))); |
3306 __ lea(rbx, Address(rax, rdx, Address::times_1)); | |
3307 __ cmpptr(rbx, Address(thread, in_bytes(JavaThread::tlab_end_offset()))); | |
0 | 3308 __ jcc(Assembler::above, allow_shared_alloc ? allocate_shared : slow_case); |
304 | 3309 __ movptr(Address(thread, in_bytes(JavaThread::tlab_top_offset())), rbx); |
0 | 3310 if (ZeroTLAB) { |
3311 // the fields have been already cleared | |
3312 __ jmp(initialize_header); | |
3313 } else { | |
3314 // initialize both the header and fields | |
3315 __ jmp(initialize_object); | |
3316 } | |
3317 } | |
3318 | |
3319 // Allocation in the shared Eden, if allowed. | |
3320 // | |
3321 // rdx: instance size in bytes | |
3322 if (allow_shared_alloc) { | |
3323 __ bind(allocate_shared); | |
3324 | |
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3325 ExternalAddress heap_top((address)Universe::heap()->top_addr()); |
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3326 |
0 | 3327 Label retry; |
3328 __ bind(retry); | |
304 | 3329 __ movptr(rax, heap_top); |
3330 __ lea(rbx, Address(rax, rdx, Address::times_1)); | |
3331 __ cmpptr(rbx, ExternalAddress((address)Universe::heap()->end_addr())); | |
0 | 3332 __ jcc(Assembler::above, slow_case); |
3333 | |
3334 // Compare rax, with the top addr, and if still equal, store the new | |
3335 // top addr in rbx, at the address of the top addr pointer. Sets ZF if was | |
3336 // equal, and clears it otherwise. Use lock prefix for atomicity on MPs. | |
3337 // | |
3338 // rax,: object begin | |
3339 // rbx,: object end | |
3340 // rdx: instance size in bytes | |
304 | 3341 __ locked_cmpxchgptr(rbx, heap_top); |
0 | 3342 |
3343 // if someone beat us on the allocation, try again, otherwise continue | |
3344 __ jcc(Assembler::notEqual, retry); | |
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3345 |
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3346 __ incr_allocated_bytes(thread, rdx, 0); |
0 | 3347 } |
3348 | |
3349 if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) { | |
3350 // The object is initialized before the header. If the object size is | |
3351 // zero, go directly to the header initialization. | |
3352 __ bind(initialize_object); | |
3353 __ decrement(rdx, sizeof(oopDesc)); | |
3354 __ jcc(Assembler::zero, initialize_header); | |
3355 | |
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3356 // Initialize topmost object field, divide rdx by 8, check if odd and |
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3357 // test if zero. |
0 | 3358 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) |
3359 __ shrl(rdx, LogBytesPerLong); // divide by 2*oopSize and set carry flag if odd | |
3360 | |
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3361 // rdx must have been multiple of 8 |
0 | 3362 #ifdef ASSERT |
3363 // make sure rdx was multiple of 8 | |
3364 Label L; | |
3365 // Ignore partial flag stall after shrl() since it is debug VM | |
3366 __ jccb(Assembler::carryClear, L); | |
3367 __ stop("object size is not multiple of 2 - adjust this code"); | |
3368 __ bind(L); | |
3369 // rdx must be > 0, no extra check needed here | |
3370 #endif | |
3371 | |
3372 // initialize remaining object fields: rdx was a multiple of 8 | |
3373 { Label loop; | |
3374 __ bind(loop); | |
304 | 3375 __ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 1*oopSize), rcx); |
3376 NOT_LP64(__ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 2*oopSize), rcx)); | |
0 | 3377 __ decrement(rdx); |
3378 __ jcc(Assembler::notZero, loop); | |
3379 } | |
3380 | |
3381 // initialize object header only. | |
3382 __ bind(initialize_header); | |
3383 if (UseBiasedLocking) { | |
304 | 3384 __ pop(rcx); // get saved klass back in the register. |
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3385 __ movptr(rbx, Address(rcx, Klass::prototype_header_offset())); |
304 | 3386 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()), rbx); |
0 | 3387 } else { |
304 | 3388 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()), |
3389 (int32_t)markOopDesc::prototype()); // header | |
3390 __ pop(rcx); // get saved klass back in the register. | |
0 | 3391 } |
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3392 __ store_klass(rax, rcx); // klass |
0 | 3393 |
3394 { | |
3395 SkipIfEqual skip_if(_masm, &DTraceAllocProbes, 0); | |
3396 // Trigger dtrace event for fastpath | |
3397 __ push(atos); | |
3398 __ call_VM_leaf( | |
3399 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), rax); | |
3400 __ pop(atos); | |
3401 } | |
3402 | |
3403 __ jmp(done); | |
3404 } | |
3405 | |
3406 // slow case | |
3407 __ bind(slow_case); | |
304 | 3408 __ pop(rcx); // restore stack pointer to what it was when we came in. |
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3409 __ bind(slow_case_no_pop); |
0 | 3410 __ get_constant_pool(rax); |
3411 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3412 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), rax, rdx); | |
3413 | |
3414 // continue | |
3415 __ bind(done); | |
3416 } | |
3417 | |
3418 | |
3419 void TemplateTable::newarray() { | |
3420 transition(itos, atos); | |
3421 __ push_i(rax); // make sure everything is on the stack | |
3422 __ load_unsigned_byte(rdx, at_bcp(1)); | |
3423 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray), rdx, rax); | |
3424 __ pop_i(rdx); // discard size | |
3425 } | |
3426 | |
3427 | |
3428 void TemplateTable::anewarray() { | |
3429 transition(itos, atos); | |
3430 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
3431 __ get_constant_pool(rcx); | |
3432 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray), rcx, rdx, rax); | |
3433 } | |
3434 | |
3435 | |
3436 void TemplateTable::arraylength() { | |
3437 transition(atos, itos); | |
3438 __ null_check(rax, arrayOopDesc::length_offset_in_bytes()); | |
3439 __ movl(rax, Address(rax, arrayOopDesc::length_offset_in_bytes())); | |
3440 } | |
3441 | |
3442 | |
3443 void TemplateTable::checkcast() { | |
3444 transition(atos, atos); | |
3445 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3446 __ testptr(rax, rax); // Object is in EAX |
0 | 3447 __ jcc(Assembler::zero, is_null); |
3448 | |
3449 // Get cpool & tags index | |
3450 __ get_cpool_and_tags(rcx, rdx); // ECX=cpool, EDX=tags array | |
3451 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // EBX=index | |
3452 // See if bytecode has already been quicked | |
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3453 __ cmpb(Address(rdx, rbx, Address::times_1, Array<u1>::base_offset_in_bytes()), JVM_CONSTANT_Class); |
0 | 3454 __ jcc(Assembler::equal, quicked); |
3455 | |
3456 __ push(atos); | |
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3457 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) ); |
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3458 // vm_result_2 has metadata result |
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3459 // borrow rdi from locals |
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3460 __ get_thread(rdi); |
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3461 __ get_vm_result_2(rax, rdi); |
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3462 __ restore_locals(); |
0 | 3463 __ pop_ptr(rdx); |
3464 __ jmpb(resolved); | |
3465 | |
3466 // Get superklass in EAX and subklass in EBX | |
3467 __ bind(quicked); | |
304 | 3468 __ mov(rdx, rax); // Save object in EDX; EAX needed for subtype check |
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3469 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, sizeof(ConstantPool))); |
0 | 3470 |
3471 __ bind(resolved); | |
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3472 __ load_klass(rbx, rdx); |
0 | 3473 |
3474 // Generate subtype check. Blows ECX. Resets EDI. Object in EDX. | |
3475 // Superklass in EAX. Subklass in EBX. | |
3476 __ gen_subtype_check( rbx, ok_is_subtype ); | |
3477 | |
3478 // Come here on failure | |
304 | 3479 __ push(rdx); |
0 | 3480 // object is at TOS |
3481 __ jump(ExternalAddress(Interpreter::_throw_ClassCastException_entry)); | |
3482 | |
3483 // Come here on success | |
3484 __ bind(ok_is_subtype); | |
304 | 3485 __ mov(rax,rdx); // Restore object in EDX |
0 | 3486 |
3487 // Collect counts on whether this check-cast sees NULLs a lot or not. | |
3488 if (ProfileInterpreter) { | |
3489 __ jmp(done); | |
3490 __ bind(is_null); | |
3491 __ profile_null_seen(rcx); | |
3492 } else { | |
3493 __ bind(is_null); // same as 'done' | |
3494 } | |
3495 __ bind(done); | |
3496 } | |
3497 | |
3498 | |
3499 void TemplateTable::instanceof() { | |
3500 transition(atos, itos); | |
3501 Label done, is_null, ok_is_subtype, quicked, resolved; | |
304 | 3502 __ testptr(rax, rax); |
0 | 3503 __ jcc(Assembler::zero, is_null); |
3504 | |
3505 // Get cpool & tags index | |
3506 __ get_cpool_and_tags(rcx, rdx); // ECX=cpool, EDX=tags array | |
3507 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // EBX=index | |
3508 // See if bytecode has already been quicked | |
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3509 __ cmpb(Address(rdx, rbx, Address::times_1, Array<u1>::base_offset_in_bytes()), JVM_CONSTANT_Class); |
0 | 3510 __ jcc(Assembler::equal, quicked); |
3511 | |
3512 __ push(atos); | |
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3513 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) ); |
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3514 // vm_result_2 has metadata result |
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3515 // borrow rdi from locals |
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3516 __ get_thread(rdi); |
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3517 __ get_vm_result_2(rax, rdi); |
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3518 __ restore_locals(); |
0 | 3519 __ pop_ptr(rdx); |
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3520 __ load_klass(rdx, rdx); |
0 | 3521 __ jmp(resolved); |
3522 | |
3523 // Get superklass in EAX and subklass in EDX | |
3524 __ bind(quicked); | |
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3525 __ load_klass(rdx, rax); |
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3526 __ movptr(rax, Address(rcx, rbx, Address::times_ptr, sizeof(ConstantPool))); |
0 | 3527 |
3528 __ bind(resolved); | |
3529 | |
3530 // Generate subtype check. Blows ECX. Resets EDI. | |
3531 // Superklass in EAX. Subklass in EDX. | |
3532 __ gen_subtype_check( rdx, ok_is_subtype ); | |
3533 | |
3534 // Come here on failure | |
3535 __ xorl(rax,rax); | |
3536 __ jmpb(done); | |
3537 // Come here on success | |
3538 __ bind(ok_is_subtype); | |
3539 __ movl(rax, 1); | |
3540 | |
3541 // Collect counts on whether this test sees NULLs a lot or not. | |
3542 if (ProfileInterpreter) { | |
3543 __ jmp(done); | |
3544 __ bind(is_null); | |
3545 __ profile_null_seen(rcx); | |
3546 } else { | |
3547 __ bind(is_null); // same as 'done' | |
3548 } | |
3549 __ bind(done); | |
3550 // rax, = 0: obj == NULL or obj is not an instanceof the specified klass | |
3551 // rax, = 1: obj != NULL and obj is an instanceof the specified klass | |
3552 } | |
3553 | |
3554 | |
3555 //---------------------------------------------------------------------------------------------------- | |
3556 // Breakpoints | |
3557 void TemplateTable::_breakpoint() { | |
3558 | |
3559 // Note: We get here even if we are single stepping.. | |
3560 // jbug inists on setting breakpoints at every bytecode | |
3561 // even if we are in single step mode. | |
3562 | |
3563 transition(vtos, vtos); | |
3564 | |
3565 // get the unpatched byte code | |
3566 __ get_method(rcx); | |
3567 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::get_original_bytecode_at), rcx, rsi); | |
304 | 3568 __ mov(rbx, rax); |
0 | 3569 |
3570 // post the breakpoint event | |
3571 __ get_method(rcx); | |
3572 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint), rcx, rsi); | |
3573 | |
3574 // complete the execution of original bytecode | |
3575 __ dispatch_only_normal(vtos); | |
3576 } | |
3577 | |
3578 | |
3579 //---------------------------------------------------------------------------------------------------- | |
3580 // Exceptions | |
3581 | |
3582 void TemplateTable::athrow() { | |
3583 transition(atos, vtos); | |
3584 __ null_check(rax); | |
3585 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
3586 } | |
3587 | |
3588 | |
3589 //---------------------------------------------------------------------------------------------------- | |
3590 // Synchronization | |
3591 // | |
3592 // Note: monitorenter & exit are symmetric routines; which is reflected | |
3593 // in the assembly code structure as well | |
3594 // | |
3595 // Stack layout: | |
3596 // | |
3597 // [expressions ] <--- rsp = expression stack top | |
3598 // .. | |
3599 // [expressions ] | |
3600 // [monitor entry] <--- monitor block top = expression stack bot | |
3601 // .. | |
3602 // [monitor entry] | |
3603 // [frame data ] <--- monitor block bot | |
3604 // ... | |
3605 // [saved rbp, ] <--- rbp, | |
3606 | |
3607 | |
3608 void TemplateTable::monitorenter() { | |
3609 transition(atos, vtos); | |
3610 | |
3611 // check for NULL object | |
3612 __ null_check(rax); | |
3613 | |
3614 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3615 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3616 const int entry_size = ( frame::interpreter_frame_monitor_size() * wordSize); | |
3617 Label allocated; | |
3618 | |
3619 // initialize entry pointer | |
3620 __ xorl(rdx, rdx); // points to free slot or NULL | |
3621 | |
3622 // find a free slot in the monitor block (result in rdx) | |
3623 { Label entry, loop, exit; | |
2415
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3624 __ movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry |
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7032388: guarantee(VM_Version::supports_cmov()) failed: illegal instruction on i586 after 6919934
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3625 |
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7032388: guarantee(VM_Version::supports_cmov()) failed: illegal instruction on i586 after 6919934
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3626 __ lea(rbx, monitor_block_bot); // points to word before bottom of monitor block |
0 | 3627 __ jmpb(entry); |
3628 | |
3629 __ bind(loop); | |
304 | 3630 __ cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used |
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3631 __ cmovptr(Assembler::equal, rdx, rcx); // if not used then remember entry in rdx |
304 | 3632 __ cmpptr(rax, Address(rcx, BasicObjectLock::obj_offset_in_bytes())); // check if current entry is for same object |
3633 __ jccb(Assembler::equal, exit); // if same object then stop searching | |
3634 __ addptr(rcx, entry_size); // otherwise advance to next entry | |
0 | 3635 __ bind(entry); |
304 | 3636 __ cmpptr(rcx, rbx); // check if bottom reached |
0 | 3637 __ jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
3638 __ bind(exit); | |
3639 } | |
3640 | |
304 | 3641 __ testptr(rdx, rdx); // check if a slot has been found |
3642 __ jccb(Assembler::notZero, allocated); // if found, continue with that one | |
0 | 3643 |
3644 // allocate one if there's no free slot | |
3645 { Label entry, loop; | |
3646 // 1. compute new pointers // rsp: old expression stack top | |
304 | 3647 __ movptr(rdx, monitor_block_bot); // rdx: old expression stack bottom |
3648 __ subptr(rsp, entry_size); // move expression stack top | |
3649 __ subptr(rdx, entry_size); // move expression stack bottom | |
3650 __ mov(rcx, rsp); // set start value for copy loop | |
3651 __ movptr(monitor_block_bot, rdx); // set new monitor block top | |
0 | 3652 __ jmp(entry); |
3653 // 2. move expression stack contents | |
3654 __ bind(loop); | |
304 | 3655 __ movptr(rbx, Address(rcx, entry_size)); // load expression stack word from old location |
3656 __ movptr(Address(rcx, 0), rbx); // and store it at new location | |
3657 __ addptr(rcx, wordSize); // advance to next word | |
0 | 3658 __ bind(entry); |
304 | 3659 __ cmpptr(rcx, rdx); // check if bottom reached |
0 | 3660 __ jcc(Assembler::notEqual, loop); // if not at bottom then copy next word |
3661 } | |
3662 | |
3663 // call run-time routine | |
3664 // rdx: points to monitor entry | |
3665 __ bind(allocated); | |
3666 | |
3667 // Increment bcp to point to the next bytecode, so exception handling for async. exceptions work correctly. | |
3668 // The object has already been poped from the stack, so the expression stack looks correct. | |
3669 __ increment(rsi); | |
3670 | |
304 | 3671 __ movptr(Address(rdx, BasicObjectLock::obj_offset_in_bytes()), rax); // store object |
0 | 3672 __ lock_object(rdx); |
3673 | |
3674 // check to make sure this monitor doesn't cause stack overflow after locking | |
3675 __ save_bcp(); // in case of exception | |
3676 __ generate_stack_overflow_check(0); | |
3677 | |
3678 // The bcp has already been incremented. Just need to dispatch to next instruction. | |
3679 __ dispatch_next(vtos); | |
3680 } | |
3681 | |
3682 | |
3683 void TemplateTable::monitorexit() { | |
3684 transition(atos, vtos); | |
3685 | |
3686 // check for NULL object | |
3687 __ null_check(rax); | |
3688 | |
3689 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
3690 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
3691 const int entry_size = ( frame::interpreter_frame_monitor_size() * wordSize); | |
3692 Label found; | |
3693 | |
3694 // find matching slot | |
3695 { Label entry, loop; | |
304 | 3696 __ movptr(rdx, monitor_block_top); // points to current entry, starting with top-most entry |
3697 __ lea(rbx, monitor_block_bot); // points to word before bottom of monitor block | |
0 | 3698 __ jmpb(entry); |
3699 | |
3700 __ bind(loop); | |
304 | 3701 __ cmpptr(rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); // check if current entry is for same object |
0 | 3702 __ jcc(Assembler::equal, found); // if same object then stop searching |
304 | 3703 __ addptr(rdx, entry_size); // otherwise advance to next entry |
0 | 3704 __ bind(entry); |
304 | 3705 __ cmpptr(rdx, rbx); // check if bottom reached |
0 | 3706 __ jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
3707 } | |
3708 | |
3709 // error handling. Unlocking was not block-structured | |
3710 Label end; | |
3711 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
3712 __ should_not_reach_here(); | |
3713 | |
3714 // call run-time routine | |
3715 // rcx: points to monitor entry | |
3716 __ bind(found); | |
3717 __ push_ptr(rax); // make sure object is on stack (contract with oopMaps) | |
3718 __ unlock_object(rdx); | |
3719 __ pop_ptr(rax); // discard object | |
3720 __ bind(end); | |
3721 } | |
3722 | |
3723 | |
3724 //---------------------------------------------------------------------------------------------------- | |
3725 // Wide instructions | |
3726 | |
3727 void TemplateTable::wide() { | |
3728 transition(vtos, vtos); | |
3729 __ load_unsigned_byte(rbx, at_bcp(1)); | |
304 | 3730 ExternalAddress wtable((address)Interpreter::_wentry_point); |
3731 __ jump(ArrayAddress(wtable, Address(noreg, rbx, Address::times_ptr))); | |
0 | 3732 // Note: the rsi increment step is part of the individual wide bytecode implementations |
3733 } | |
3734 | |
3735 | |
3736 //---------------------------------------------------------------------------------------------------- | |
3737 // Multi arrays | |
3738 | |
3739 void TemplateTable::multianewarray() { | |
3740 transition(vtos, atos); | |
3741 __ load_unsigned_byte(rax, at_bcp(3)); // get number of dimensions | |
3742 // last dim is on top of stack; we want address of first one: | |
3743 // first_addr = last_addr + (ndims - 1) * stackElementSize - 1*wordsize | |
3744 // the latter wordSize to point to the beginning of the array. | |
304 | 3745 __ lea( rax, Address(rsp, rax, Interpreter::stackElementScale(), -wordSize)); |
0 | 3746 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), rax); // pass in rax, |
3747 __ load_unsigned_byte(rbx, at_bcp(3)); | |
304 | 3748 __ lea(rsp, Address(rsp, rbx, Interpreter::stackElementScale())); // get rid of counts |
0 | 3749 } |
3750 | |
3751 #endif /* !CC_INTERP */ |