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annotate src/cpu/ppc/vm/interp_masm_ppc_64.cpp @ 17804:fd1b9f02cc91
8036976: PPC64: implement the template interpreter
Reviewed-by: kvn, coleenp
Contributed-by: axel.siebenborn@sap.com, martin.doerr@sap.com
| author | goetz |
|---|---|
| date | Mon, 10 Mar 2014 12:58:02 +0100 |
| parents | 67fa91961822 |
| children | 92aa6797d639 b384ba33c9a0 |
| rev | line source |
|---|---|
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1 /* |
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2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
| 17804 | 3 * Copyright 2012, 2014 SAP AG. All rights reserved. |
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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5 * |
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6 * This code is free software; you can redistribute it and/or modify it |
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7 * under the terms of the GNU General Public License version 2 only, as |
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8 * published by the Free Software Foundation. |
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9 * |
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10 * This code is distributed in the hope that it will be useful, but WITHOUT |
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 * version 2 for more details (a copy is included in the LICENSE file that |
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14 * accompanied this code). |
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15 * |
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16 * You should have received a copy of the GNU General Public License version |
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17 * 2 along with this work; if not, write to the Free Software Foundation, |
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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19 * |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
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23 * |
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24 */ |
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25 |
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26 |
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27 #include "precompiled.hpp" |
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28 #include "asm/assembler.hpp" |
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29 #include "asm/macroAssembler.inline.hpp" |
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30 #include "interp_masm_ppc_64.hpp" |
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31 #include "interpreter/interpreterRuntime.hpp" |
| 17804 | 32 #include "prims/jvmtiThreadState.hpp" |
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33 |
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34 #ifdef PRODUCT |
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35 #define BLOCK_COMMENT(str) // nothing |
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36 #else |
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37 #define BLOCK_COMMENT(str) block_comment(str) |
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38 #endif |
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39 |
| 14445 | 40 void InterpreterMacroAssembler::null_check_throw(Register a, int offset, Register temp_reg) { |
| 41 #ifdef CC_INTERP | |
| 42 address exception_entry = StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 43 #else | |
| 44 address exception_entry = Interpreter::throw_NullPointerException_entry(); | |
| 45 #endif | |
| 46 MacroAssembler::null_check_throw(a, offset, temp_reg, exception_entry); | |
| 47 } | |
| 48 | |
| 17804 | 49 void InterpreterMacroAssembler::branch_to_entry(address entry, Register Rscratch) { |
| 50 assert(entry, "Entry must have been generated by now"); | |
| 51 if (is_within_range_of_b(entry, pc())) { | |
| 52 b(entry); | |
| 53 } else { | |
| 54 load_const_optimized(Rscratch, entry, R0); | |
| 55 mtctr(Rscratch); | |
| 56 bctr(); | |
| 57 } | |
| 58 } | |
| 59 | |
| 60 #ifndef CC_INTERP | |
| 61 | |
| 62 void InterpreterMacroAssembler::dispatch_next(TosState state, int bcp_incr) { | |
| 63 Register bytecode = R12_scratch2; | |
| 64 if (bcp_incr != 0) { | |
| 65 lbzu(bytecode, bcp_incr, R14_bcp); | |
| 66 } else { | |
| 67 lbz(bytecode, 0, R14_bcp); | |
| 68 } | |
| 69 | |
| 70 dispatch_Lbyte_code(state, bytecode, Interpreter::dispatch_table(state)); | |
| 71 } | |
| 72 | |
| 73 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
| 74 // Load current bytecode. | |
| 75 Register bytecode = R12_scratch2; | |
| 76 lbz(bytecode, 0, R14_bcp); | |
| 77 dispatch_Lbyte_code(state, bytecode, table); | |
| 78 } | |
| 79 | |
| 80 // Dispatch code executed in the prolog of a bytecode which does not do it's | |
| 81 // own dispatch. The dispatch address is computed and placed in R24_dispatch_addr. | |
| 82 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int bcp_incr) { | |
| 83 Register bytecode = R12_scratch2; | |
| 84 lbz(bytecode, bcp_incr, R14_bcp); | |
| 85 | |
| 86 load_dispatch_table(R24_dispatch_addr, Interpreter::dispatch_table(state)); | |
| 87 | |
| 88 sldi(bytecode, bytecode, LogBytesPerWord); | |
| 89 ldx(R24_dispatch_addr, R24_dispatch_addr, bytecode); | |
| 90 } | |
| 91 | |
| 92 // Dispatch code executed in the epilog of a bytecode which does not do it's | |
| 93 // own dispatch. The dispatch address in R24_dispatch_addr is used for the | |
| 94 // dispatch. | |
| 95 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int bcp_incr) { | |
| 96 mtctr(R24_dispatch_addr); | |
| 97 addi(R14_bcp, R14_bcp, bcp_incr); | |
| 98 bctr(); | |
| 99 } | |
| 100 | |
| 101 void InterpreterMacroAssembler::check_and_handle_popframe(Register scratch_reg) { | |
| 102 assert(scratch_reg != R0, "can't use R0 as scratch_reg here"); | |
| 103 if (JvmtiExport::can_pop_frame()) { | |
| 104 Label L; | |
| 105 | |
| 106 // Check the "pending popframe condition" flag in the current thread. | |
| 107 lwz(scratch_reg, in_bytes(JavaThread::popframe_condition_offset()), R16_thread); | |
| 108 | |
| 109 // Initiate popframe handling only if it is not already being | |
| 110 // processed. If the flag has the popframe_processing bit set, it | |
| 111 // means that this code is called *during* popframe handling - we | |
| 112 // don't want to reenter. | |
| 113 andi_(R0, scratch_reg, JavaThread::popframe_pending_bit); | |
| 114 beq(CCR0, L); | |
| 115 | |
| 116 andi_(R0, scratch_reg, JavaThread::popframe_processing_bit); | |
| 117 bne(CCR0, L); | |
| 118 | |
| 119 // Call the Interpreter::remove_activation_preserving_args_entry() | |
| 120 // func to get the address of the same-named entrypoint in the | |
| 121 // generated interpreter code. | |
| 122 call_c(CAST_FROM_FN_PTR(FunctionDescriptor*, | |
| 123 Interpreter::remove_activation_preserving_args_entry), | |
| 124 relocInfo::none); | |
| 125 | |
| 126 // Jump to Interpreter::_remove_activation_preserving_args_entry. | |
| 127 mtctr(R3_RET); | |
| 128 bctr(); | |
| 129 | |
| 130 align(32, 12); | |
| 131 bind(L); | |
| 132 } | |
| 133 } | |
| 134 | |
| 135 void InterpreterMacroAssembler::check_and_handle_earlyret(Register scratch_reg) { | |
| 136 const Register Rthr_state_addr = scratch_reg; | |
| 137 if (JvmtiExport::can_force_early_return()) { | |
| 138 Label Lno_early_ret; | |
| 139 ld(Rthr_state_addr, in_bytes(JavaThread::jvmti_thread_state_offset()), R16_thread); | |
| 140 cmpdi(CCR0, Rthr_state_addr, 0); | |
| 141 beq(CCR0, Lno_early_ret); | |
| 142 | |
| 143 lwz(R0, in_bytes(JvmtiThreadState::earlyret_state_offset()), Rthr_state_addr); | |
| 144 cmpwi(CCR0, R0, JvmtiThreadState::earlyret_pending); | |
| 145 bne(CCR0, Lno_early_ret); | |
| 146 | |
| 147 // Jump to Interpreter::_earlyret_entry. | |
| 148 lwz(R3_ARG1, in_bytes(JvmtiThreadState::earlyret_tos_offset()), Rthr_state_addr); | |
| 149 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry)); | |
| 150 mtlr(R3_RET); | |
| 151 blr(); | |
| 152 | |
| 153 align(32, 12); | |
| 154 bind(Lno_early_ret); | |
| 155 } | |
| 156 } | |
| 157 | |
| 158 void InterpreterMacroAssembler::load_earlyret_value(TosState state, Register Rscratch1) { | |
| 159 const Register RjvmtiState = Rscratch1; | |
| 160 const Register Rscratch2 = R0; | |
| 161 | |
| 162 ld(RjvmtiState, in_bytes(JavaThread::jvmti_thread_state_offset()), R16_thread); | |
| 163 li(Rscratch2, 0); | |
| 164 | |
| 165 switch (state) { | |
| 166 case atos: ld(R17_tos, in_bytes(JvmtiThreadState::earlyret_oop_offset()), RjvmtiState); | |
| 167 std(Rscratch2, in_bytes(JvmtiThreadState::earlyret_oop_offset()), RjvmtiState); | |
| 168 break; | |
| 169 case ltos: ld(R17_tos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
| 170 break; | |
| 171 case btos: // fall through | |
| 172 case ctos: // fall through | |
| 173 case stos: // fall through | |
| 174 case itos: lwz(R17_tos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
| 175 break; | |
| 176 case ftos: lfs(F15_ftos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
| 177 break; | |
| 178 case dtos: lfd(F15_ftos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
| 179 break; | |
| 180 case vtos: break; | |
| 181 default : ShouldNotReachHere(); | |
| 182 } | |
| 183 | |
| 184 // Clean up tos value in the jvmti thread state. | |
| 185 std(Rscratch2, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
| 186 // Set tos state field to illegal value. | |
| 187 li(Rscratch2, ilgl); | |
| 188 stw(Rscratch2, in_bytes(JvmtiThreadState::earlyret_tos_offset()), RjvmtiState); | |
| 189 } | |
| 190 | |
| 191 // Common code to dispatch and dispatch_only. | |
| 192 // Dispatch value in Lbyte_code and increment Lbcp. | |
| 193 | |
| 194 void InterpreterMacroAssembler::load_dispatch_table(Register dst, address* table) { | |
| 195 address table_base = (address)Interpreter::dispatch_table((TosState)0); | |
| 196 intptr_t table_offs = (intptr_t)table - (intptr_t)table_base; | |
| 197 if (is_simm16(table_offs)) { | |
| 198 addi(dst, R25_templateTableBase, (int)table_offs); | |
| 199 } else { | |
| 200 load_const_optimized(dst, table, R0); | |
| 201 } | |
| 202 } | |
| 203 | |
| 204 void InterpreterMacroAssembler::dispatch_Lbyte_code(TosState state, Register bytecode, address* table, bool verify) { | |
| 205 if (verify) { | |
| 206 unimplemented("dispatch_Lbyte_code: verify"); // See Sparc Implementation to implement this | |
| 207 } | |
| 208 | |
| 209 #ifdef FAST_DISPATCH | |
| 210 unimplemented("dispatch_Lbyte_code FAST_DISPATCH"); | |
| 211 #else | |
| 212 assert_different_registers(bytecode, R11_scratch1); | |
| 213 | |
| 214 // Calc dispatch table address. | |
| 215 load_dispatch_table(R11_scratch1, table); | |
| 216 | |
| 217 sldi(R12_scratch2, bytecode, LogBytesPerWord); | |
| 218 ldx(R11_scratch1, R11_scratch1, R12_scratch2); | |
| 219 | |
| 220 // Jump off! | |
| 221 mtctr(R11_scratch1); | |
| 222 bctr(); | |
| 223 #endif | |
| 224 } | |
| 225 | |
| 226 void InterpreterMacroAssembler::load_receiver(Register Rparam_count, Register Rrecv_dst) { | |
| 227 sldi(Rrecv_dst, Rparam_count, Interpreter::logStackElementSize); | |
| 228 ldx(Rrecv_dst, Rrecv_dst, R15_esp); | |
| 229 } | |
| 230 | |
| 231 // helpers for expression stack | |
| 232 | |
| 233 void InterpreterMacroAssembler::pop_i(Register r) { | |
| 234 lwzu(r, Interpreter::stackElementSize, R15_esp); | |
| 235 } | |
| 236 | |
| 237 void InterpreterMacroAssembler::pop_ptr(Register r) { | |
| 238 ldu(r, Interpreter::stackElementSize, R15_esp); | |
| 239 } | |
| 240 | |
| 241 void InterpreterMacroAssembler::pop_l(Register r) { | |
| 242 ld(r, Interpreter::stackElementSize, R15_esp); | |
| 243 addi(R15_esp, R15_esp, 2 * Interpreter::stackElementSize); | |
| 244 } | |
| 245 | |
| 246 void InterpreterMacroAssembler::pop_f(FloatRegister f) { | |
| 247 lfsu(f, Interpreter::stackElementSize, R15_esp); | |
| 248 } | |
| 249 | |
| 250 void InterpreterMacroAssembler::pop_d(FloatRegister f) { | |
| 251 lfd(f, Interpreter::stackElementSize, R15_esp); | |
| 252 addi(R15_esp, R15_esp, 2 * Interpreter::stackElementSize); | |
| 253 } | |
| 254 | |
| 255 void InterpreterMacroAssembler::push_i(Register r) { | |
| 256 stw(r, 0, R15_esp); | |
| 257 addi(R15_esp, R15_esp, - Interpreter::stackElementSize ); | |
| 258 } | |
| 259 | |
| 260 void InterpreterMacroAssembler::push_ptr(Register r) { | |
| 261 std(r, 0, R15_esp); | |
| 262 addi(R15_esp, R15_esp, - Interpreter::stackElementSize ); | |
| 263 } | |
| 264 | |
| 265 void InterpreterMacroAssembler::push_l(Register r) { | |
| 266 std(r, - Interpreter::stackElementSize, R15_esp); | |
| 267 addi(R15_esp, R15_esp, - 2 * Interpreter::stackElementSize ); | |
| 268 } | |
| 269 | |
| 270 void InterpreterMacroAssembler::push_f(FloatRegister f) { | |
| 271 stfs(f, 0, R15_esp); | |
| 272 addi(R15_esp, R15_esp, - Interpreter::stackElementSize ); | |
| 273 } | |
| 274 | |
| 275 void InterpreterMacroAssembler::push_d(FloatRegister f) { | |
| 276 stfd(f, - Interpreter::stackElementSize, R15_esp); | |
| 277 addi(R15_esp, R15_esp, - 2 * Interpreter::stackElementSize ); | |
| 278 } | |
| 279 | |
| 280 void InterpreterMacroAssembler::push_2ptrs(Register first, Register second) { | |
| 281 std(first, 0, R15_esp); | |
| 282 std(second, -Interpreter::stackElementSize, R15_esp); | |
| 283 addi(R15_esp, R15_esp, - 2 * Interpreter::stackElementSize ); | |
| 284 } | |
| 285 | |
| 286 void InterpreterMacroAssembler::push_l_pop_d(Register l, FloatRegister d) { | |
| 287 std(l, 0, R15_esp); | |
| 288 lfd(d, 0, R15_esp); | |
| 289 } | |
| 290 | |
| 291 void InterpreterMacroAssembler::push_d_pop_l(FloatRegister d, Register l) { | |
| 292 stfd(d, 0, R15_esp); | |
| 293 ld(l, 0, R15_esp); | |
| 294 } | |
| 295 | |
| 296 void InterpreterMacroAssembler::push(TosState state) { | |
| 297 switch (state) { | |
| 298 case atos: push_ptr(); break; | |
| 299 case btos: | |
| 300 case ctos: | |
| 301 case stos: | |
| 302 case itos: push_i(); break; | |
| 303 case ltos: push_l(); break; | |
| 304 case ftos: push_f(); break; | |
| 305 case dtos: push_d(); break; | |
| 306 case vtos: /* nothing to do */ break; | |
| 307 default : ShouldNotReachHere(); | |
| 308 } | |
| 309 } | |
| 310 | |
| 311 void InterpreterMacroAssembler::pop(TosState state) { | |
| 312 switch (state) { | |
| 313 case atos: pop_ptr(); break; | |
| 314 case btos: | |
| 315 case ctos: | |
| 316 case stos: | |
| 317 case itos: pop_i(); break; | |
| 318 case ltos: pop_l(); break; | |
| 319 case ftos: pop_f(); break; | |
| 320 case dtos: pop_d(); break; | |
| 321 case vtos: /* nothing to do */ break; | |
| 322 default : ShouldNotReachHere(); | |
| 323 } | |
| 324 verify_oop(R17_tos, state); | |
| 325 } | |
| 326 | |
| 327 void InterpreterMacroAssembler::empty_expression_stack() { | |
| 328 addi(R15_esp, R26_monitor, - Interpreter::stackElementSize); | |
| 329 } | |
| 330 | |
| 331 void InterpreterMacroAssembler::get_2_byte_integer_at_bcp(int bcp_offset, | |
| 332 Register Rdst, | |
| 333 signedOrNot is_signed) { | |
| 334 // Read Java big endian format. | |
| 335 if (is_signed == Signed) { | |
| 336 lha(Rdst, bcp_offset, R14_bcp); | |
| 337 } else { | |
| 338 lhz(Rdst, bcp_offset, R14_bcp); | |
| 339 } | |
| 340 #if 0 | |
| 341 assert(Rtmp != Rdst, "need separate temp register"); | |
| 342 Register Rfirst = Rtmp; | |
| 343 lbz(Rfirst, bcp_offset, R14_bcp); // first byte | |
| 344 lbz(Rdst, bcp_offset+1, R14_bcp); // second byte | |
| 345 | |
| 346 // Rdst = ((Rfirst<<8) & 0xFF00) | (Rdst &~ 0xFF00) | |
| 347 rldimi(/*RA=*/Rdst, /*RS=*/Rfirst, /*sh=*/8, /*mb=*/48); | |
| 348 if (is_signed == Signed) { | |
| 349 extsh(Rdst, Rdst); | |
| 350 } | |
| 351 #endif | |
| 352 } | |
| 353 | |
| 354 void InterpreterMacroAssembler::get_4_byte_integer_at_bcp(int bcp_offset, | |
| 355 Register Rdst, | |
| 356 signedOrNot is_signed) { | |
| 357 // Read Java big endian format. | |
| 358 if (bcp_offset & 3) { // Offset unaligned? | |
| 359 load_const_optimized(Rdst, bcp_offset); | |
| 360 if (is_signed == Signed) { | |
| 361 lwax(Rdst, R14_bcp, Rdst); | |
| 362 } else { | |
| 363 lwzx(Rdst, R14_bcp, Rdst); | |
| 364 } | |
| 365 } else { | |
| 366 if (is_signed == Signed) { | |
| 367 lwa(Rdst, bcp_offset, R14_bcp); | |
| 368 } else { | |
| 369 lwz(Rdst, bcp_offset, R14_bcp); | |
| 370 } | |
| 371 } | |
| 372 } | |
| 373 | |
| 374 // Load the constant pool cache index from the bytecode stream. | |
| 375 // | |
| 376 // Kills / writes: | |
| 377 // - Rdst, Rscratch | |
| 378 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register Rdst, int bcp_offset, size_t index_size) { | |
| 379 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); | |
| 380 if (index_size == sizeof(u2)) { | |
| 381 get_2_byte_integer_at_bcp(bcp_offset, Rdst, Unsigned); | |
| 382 } else if (index_size == sizeof(u4)) { | |
| 383 assert(EnableInvokeDynamic, "giant index used only for JSR 292"); | |
| 384 get_4_byte_integer_at_bcp(bcp_offset, Rdst, Signed); | |
| 385 assert(ConstantPool::decode_invokedynamic_index(~123) == 123, "else change next line"); | |
| 386 nand(Rdst, Rdst, Rdst); // convert to plain index | |
| 387 } else if (index_size == sizeof(u1)) { | |
| 388 lbz(Rdst, bcp_offset, R14_bcp); | |
| 389 } else { | |
| 390 ShouldNotReachHere(); | |
| 391 } | |
| 392 // Rdst now contains cp cache index. | |
| 393 } | |
| 394 | |
| 395 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, int bcp_offset, size_t index_size) { | |
| 396 get_cache_index_at_bcp(cache, bcp_offset, index_size); | |
| 397 sldi(cache, cache, exact_log2(in_words(ConstantPoolCacheEntry::size()) * BytesPerWord)); | |
| 398 add(cache, R27_constPoolCache, cache); | |
| 399 } | |
| 400 | |
| 401 // Load object from cpool->resolved_references(index). | |
| 402 void InterpreterMacroAssembler::load_resolved_reference_at_index(Register result, Register index) { | |
| 403 assert_different_registers(result, index); | |
| 404 get_constant_pool(result); | |
| 405 | |
| 406 // Convert from field index to resolved_references() index and from | |
| 407 // word index to byte offset. Since this is a java object, it can be compressed. | |
| 408 Register tmp = index; // reuse | |
| 409 sldi(tmp, index, LogBytesPerHeapOop); | |
| 410 // Load pointer for resolved_references[] objArray. | |
| 411 ld(result, ConstantPool::resolved_references_offset_in_bytes(), result); | |
| 412 // JNIHandles::resolve(result) | |
| 413 ld(result, 0, result); | |
| 414 #ifdef ASSERT | |
| 415 Label index_ok; | |
| 416 lwa(R0, arrayOopDesc::length_offset_in_bytes(), result); | |
| 417 sldi(R0, R0, LogBytesPerHeapOop); | |
| 418 cmpd(CCR0, tmp, R0); | |
| 419 blt(CCR0, index_ok); | |
| 420 stop("resolved reference index out of bounds", 0x09256); | |
| 421 bind(index_ok); | |
| 422 #endif | |
| 423 // Add in the index. | |
| 424 add(result, tmp, result); | |
| 425 load_heap_oop(result, arrayOopDesc::base_offset_in_bytes(T_OBJECT), result); | |
| 426 } | |
| 427 | |
| 428 // Generate a subtype check: branch to ok_is_subtype if sub_klass is | |
| 429 // a subtype of super_klass. Blows registers Rsub_klass, tmp1, tmp2. | |
| 430 void InterpreterMacroAssembler::gen_subtype_check(Register Rsub_klass, Register Rsuper_klass, Register Rtmp1, | |
| 431 Register Rtmp2, Register Rtmp3, Label &ok_is_subtype) { | |
| 432 // Profile the not-null value's klass. | |
| 433 profile_typecheck(Rsub_klass, Rtmp1, Rtmp2); | |
| 434 check_klass_subtype(Rsub_klass, Rsuper_klass, Rtmp1, Rtmp2, ok_is_subtype); | |
| 435 profile_typecheck_failed(Rtmp1, Rtmp2); | |
| 436 } | |
| 437 | |
| 438 void InterpreterMacroAssembler::generate_stack_overflow_check_with_compare_and_throw(Register Rmem_frame_size, Register Rscratch1) { | |
| 439 Label done; | |
| 440 sub(Rmem_frame_size, R1_SP, Rmem_frame_size); | |
| 441 ld(Rscratch1, thread_(stack_overflow_limit)); | |
| 442 cmpld(CCR0/*is_stack_overflow*/, Rmem_frame_size, Rscratch1); | |
| 443 bgt(CCR0/*is_stack_overflow*/, done); | |
| 444 | |
| 445 // Load target address of the runtime stub. | |
| 446 assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "generated in wrong order"); | |
| 447 load_const_optimized(Rscratch1, (StubRoutines::throw_StackOverflowError_entry()), R0); | |
| 448 mtctr(Rscratch1); | |
| 449 // Restore caller_sp. | |
| 450 #ifdef ASSERT | |
| 451 ld(Rscratch1, 0, R1_SP); | |
| 452 ld(R0, 0, R21_sender_SP); | |
| 453 cmpd(CCR0, R0, Rscratch1); | |
| 454 asm_assert_eq("backlink", 0x547); | |
| 455 #endif // ASSERT | |
| 456 mr(R1_SP, R21_sender_SP); | |
| 457 bctr(); | |
| 458 | |
| 459 align(32, 12); | |
| 460 bind(done); | |
| 461 } | |
| 462 | |
| 463 // Separate these two to allow for delay slot in middle. | |
| 464 // These are used to do a test and full jump to exception-throwing code. | |
| 465 | |
| 466 // Check that index is in range for array, then shift index by index_shift, | |
| 467 // and put arrayOop + shifted_index into res. | |
| 468 // Note: res is still shy of address by array offset into object. | |
| 469 | |
| 470 void InterpreterMacroAssembler::index_check_without_pop(Register Rarray, Register Rindex, int index_shift, Register Rtmp, Register Rres) { | |
| 471 // Check that index is in range for array, then shift index by index_shift, | |
| 472 // and put arrayOop + shifted_index into res. | |
| 473 // Note: res is still shy of address by array offset into object. | |
| 474 // Kills: | |
| 475 // - Rindex | |
| 476 // Writes: | |
| 477 // - Rres: Address that corresponds to the array index if check was successful. | |
| 478 verify_oop(Rarray); | |
| 479 const Register Rlength = R0; | |
| 480 const Register RsxtIndex = Rtmp; | |
| 481 Label LisNull, LnotOOR; | |
| 482 | |
| 483 // Array nullcheck | |
| 484 if (!ImplicitNullChecks) { | |
| 485 cmpdi(CCR0, Rarray, 0); | |
| 486 beq(CCR0, LisNull); | |
| 487 } else { | |
| 488 null_check_throw(Rarray, arrayOopDesc::length_offset_in_bytes(), /*temp*/RsxtIndex); | |
| 489 } | |
| 490 | |
| 491 // Rindex might contain garbage in upper bits (remember that we don't sign extend | |
| 492 // during integer arithmetic operations). So kill them and put value into same register | |
| 493 // where ArrayIndexOutOfBounds would expect the index in. | |
| 494 rldicl(RsxtIndex, Rindex, 0, 32); // zero extend 32 bit -> 64 bit | |
| 495 | |
| 496 // Index check | |
| 497 lwz(Rlength, arrayOopDesc::length_offset_in_bytes(), Rarray); | |
| 498 cmplw(CCR0, Rindex, Rlength); | |
| 499 sldi(RsxtIndex, RsxtIndex, index_shift); | |
| 500 blt(CCR0, LnotOOR); | |
| 501 load_dispatch_table(Rtmp, (address*)Interpreter::_throw_ArrayIndexOutOfBoundsException_entry); | |
| 502 mtctr(Rtmp); | |
| 503 bctr(); | |
| 504 | |
| 505 if (!ImplicitNullChecks) { | |
| 506 bind(LisNull); | |
| 507 load_dispatch_table(Rtmp, (address*)Interpreter::_throw_NullPointerException_entry); | |
| 508 mtctr(Rtmp); | |
| 509 bctr(); | |
| 510 } | |
| 511 | |
| 512 align(32, 16); | |
| 513 bind(LnotOOR); | |
| 514 | |
| 515 // Calc address | |
| 516 add(Rres, RsxtIndex, Rarray); | |
| 517 } | |
| 518 | |
| 519 void InterpreterMacroAssembler::index_check(Register array, Register index, int index_shift, Register tmp, Register res) { | |
| 520 // pop array | |
| 521 pop_ptr(array); | |
| 522 | |
| 523 // check array | |
| 524 index_check_without_pop(array, index, index_shift, tmp, res); | |
| 525 } | |
| 526 | |
| 527 void InterpreterMacroAssembler::get_const(Register Rdst) { | |
| 528 ld(Rdst, in_bytes(Method::const_offset()), R19_method); | |
| 529 } | |
| 530 | |
| 531 void InterpreterMacroAssembler::get_constant_pool(Register Rdst) { | |
| 532 get_const(Rdst); | |
| 533 ld(Rdst, in_bytes(ConstMethod::constants_offset()), Rdst); | |
| 534 } | |
| 535 | |
| 536 void InterpreterMacroAssembler::get_constant_pool_cache(Register Rdst) { | |
| 537 get_constant_pool(Rdst); | |
| 538 ld(Rdst, ConstantPool::cache_offset_in_bytes(), Rdst); | |
| 539 } | |
| 540 | |
| 541 void InterpreterMacroAssembler::get_cpool_and_tags(Register Rcpool, Register Rtags) { | |
| 542 get_constant_pool(Rcpool); | |
| 543 ld(Rtags, ConstantPool::tags_offset_in_bytes(), Rcpool); | |
| 544 } | |
| 545 | |
| 546 // Unlock if synchronized method. | |
| 547 // | |
| 548 // Unlock the receiver if this is a synchronized method. | |
| 549 // Unlock any Java monitors from synchronized blocks. | |
| 550 // | |
| 551 // If there are locked Java monitors | |
| 552 // If throw_monitor_exception | |
| 553 // throws IllegalMonitorStateException | |
| 554 // Else if install_monitor_exception | |
| 555 // installs IllegalMonitorStateException | |
| 556 // Else | |
| 557 // no error processing | |
| 558 void InterpreterMacroAssembler::unlock_if_synchronized_method(TosState state, | |
| 559 bool throw_monitor_exception, | |
| 560 bool install_monitor_exception) { | |
| 561 Label Lunlocked, Lno_unlock; | |
| 562 { | |
| 563 Register Rdo_not_unlock_flag = R11_scratch1; | |
| 564 Register Raccess_flags = R12_scratch2; | |
| 565 | |
| 566 // Check if synchronized method or unlocking prevented by | |
| 567 // JavaThread::do_not_unlock_if_synchronized flag. | |
| 568 lbz(Rdo_not_unlock_flag, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread); | |
| 569 lwz(Raccess_flags, in_bytes(Method::access_flags_offset()), R19_method); | |
| 570 li(R0, 0); | |
| 571 stb(R0, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread); // reset flag | |
| 572 | |
| 573 push(state); | |
| 574 | |
| 575 // Skip if we don't have to unlock. | |
| 576 rldicl_(R0, Raccess_flags, 64-JVM_ACC_SYNCHRONIZED_BIT, 63); // Extract bit and compare to 0. | |
| 577 beq(CCR0, Lunlocked); | |
| 578 | |
| 579 cmpwi(CCR0, Rdo_not_unlock_flag, 0); | |
| 580 bne(CCR0, Lno_unlock); | |
| 581 } | |
| 582 | |
| 583 // Unlock | |
| 584 { | |
| 585 Register Rmonitor_base = R11_scratch1; | |
| 586 | |
| 587 Label Lunlock; | |
| 588 // If it's still locked, everything is ok, unlock it. | |
| 589 ld(Rmonitor_base, 0, R1_SP); | |
| 590 addi(Rmonitor_base, Rmonitor_base, - (frame::ijava_state_size + frame::interpreter_frame_monitor_size_in_bytes())); // Monitor base | |
| 591 | |
| 592 ld(R0, BasicObjectLock::obj_offset_in_bytes(), Rmonitor_base); | |
| 593 cmpdi(CCR0, R0, 0); | |
| 594 bne(CCR0, Lunlock); | |
| 595 | |
| 596 // If it's already unlocked, throw exception. | |
| 597 if (throw_monitor_exception) { | |
| 598 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 599 should_not_reach_here(); | |
| 600 } else { | |
| 601 if (install_monitor_exception) { | |
| 602 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 603 b(Lunlocked); | |
| 604 } | |
| 605 } | |
| 606 | |
| 607 bind(Lunlock); | |
| 608 unlock_object(Rmonitor_base); | |
| 609 } | |
| 610 | |
| 611 // Check that all other monitors are unlocked. Throw IllegelMonitorState exception if not. | |
| 612 bind(Lunlocked); | |
| 613 { | |
| 614 Label Lexception, Lrestart; | |
| 615 Register Rcurrent_obj_addr = R11_scratch1; | |
| 616 const int delta = frame::interpreter_frame_monitor_size_in_bytes(); | |
| 617 assert((delta & LongAlignmentMask) == 0, "sizeof BasicObjectLock must be even number of doublewords"); | |
| 618 | |
| 619 bind(Lrestart); | |
| 620 // Set up search loop: Calc num of iterations. | |
| 621 { | |
| 622 Register Riterations = R12_scratch2; | |
| 623 Register Rmonitor_base = Rcurrent_obj_addr; | |
| 624 ld(Rmonitor_base, 0, R1_SP); | |
| 625 addi(Rmonitor_base, Rmonitor_base, - frame::ijava_state_size); // Monitor base | |
| 626 | |
| 627 subf_(Riterations, R26_monitor, Rmonitor_base); | |
| 628 ble(CCR0, Lno_unlock); | |
| 629 | |
| 630 addi(Rcurrent_obj_addr, Rmonitor_base, BasicObjectLock::obj_offset_in_bytes() - frame::interpreter_frame_monitor_size_in_bytes()); | |
| 631 // Check if any monitor is on stack, bail out if not | |
| 632 srdi(Riterations, Riterations, exact_log2(delta)); | |
| 633 mtctr(Riterations); | |
| 634 } | |
| 635 | |
| 636 // The search loop: Look for locked monitors. | |
| 637 { | |
| 638 const Register Rcurrent_obj = R0; | |
| 639 Label Lloop; | |
| 640 | |
| 641 ld(Rcurrent_obj, 0, Rcurrent_obj_addr); | |
| 642 addi(Rcurrent_obj_addr, Rcurrent_obj_addr, -delta); | |
| 643 bind(Lloop); | |
| 644 | |
| 645 // Check if current entry is used. | |
| 646 cmpdi(CCR0, Rcurrent_obj, 0); | |
| 647 bne(CCR0, Lexception); | |
| 648 // Preload next iteration's compare value. | |
| 649 ld(Rcurrent_obj, 0, Rcurrent_obj_addr); | |
| 650 addi(Rcurrent_obj_addr, Rcurrent_obj_addr, -delta); | |
| 651 bdnz(Lloop); | |
| 652 } | |
| 653 // Fell through: Everything's unlocked => finish. | |
| 654 b(Lno_unlock); | |
| 655 | |
| 656 // An object is still locked => need to throw exception. | |
| 657 bind(Lexception); | |
| 658 if (throw_monitor_exception) { | |
| 659 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 660 should_not_reach_here(); | |
| 661 } else { | |
| 662 // Stack unrolling. Unlock object and if requested, install illegal_monitor_exception. | |
| 663 // Unlock does not block, so don't have to worry about the frame. | |
| 664 Register Rmonitor_addr = R11_scratch1; | |
| 665 addi(Rmonitor_addr, Rcurrent_obj_addr, -BasicObjectLock::obj_offset_in_bytes() + delta); | |
| 666 unlock_object(Rmonitor_addr); | |
| 667 if (install_monitor_exception) { | |
| 668 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 669 } | |
| 670 b(Lrestart); | |
| 671 } | |
| 672 } | |
| 673 | |
| 674 align(32, 12); | |
| 675 bind(Lno_unlock); | |
| 676 pop(state); | |
| 677 } | |
| 678 | |
| 679 // Support function for remove_activation & Co. | |
| 680 void InterpreterMacroAssembler::merge_frames(Register Rsender_sp, Register return_pc, Register Rscratch1, Register Rscratch2) { | |
| 681 // Pop interpreter frame. | |
| 682 ld(Rscratch1, 0, R1_SP); // *SP | |
| 683 ld(Rsender_sp, _ijava_state_neg(sender_sp), Rscratch1); // top_frame_sp | |
| 684 ld(Rscratch2, 0, Rscratch1); // **SP | |
| 685 #ifdef ASSERT | |
| 686 { | |
| 687 Label Lok; | |
| 688 ld(R0, _ijava_state_neg(ijava_reserved), Rscratch1); | |
| 689 cmpdi(CCR0, R0, 0x5afe); | |
| 690 beq(CCR0, Lok); | |
| 691 stop("frame corrupted (remove activation)", 0x5afe); | |
| 692 bind(Lok); | |
| 693 } | |
| 694 #endif | |
| 695 if (return_pc!=noreg) { | |
| 696 ld(return_pc, _abi(lr), Rscratch1); // LR | |
| 697 } | |
| 698 | |
| 699 // Merge top frames. | |
| 700 subf(Rscratch1, R1_SP, Rsender_sp); // top_frame_sp - SP | |
| 701 stdux(Rscratch2, R1_SP, Rscratch1); // atomically set *(SP = top_frame_sp) = **SP | |
| 702 } | |
| 703 | |
| 704 // Remove activation. | |
| 705 // | |
| 706 // Unlock the receiver if this is a synchronized method. | |
| 707 // Unlock any Java monitors from synchronized blocks. | |
| 708 // Remove the activation from the stack. | |
| 709 // | |
| 710 // If there are locked Java monitors | |
| 711 // If throw_monitor_exception | |
| 712 // throws IllegalMonitorStateException | |
| 713 // Else if install_monitor_exception | |
| 714 // installs IllegalMonitorStateException | |
| 715 // Else | |
| 716 // no error processing | |
| 717 void InterpreterMacroAssembler::remove_activation(TosState state, | |
| 718 bool throw_monitor_exception, | |
| 719 bool install_monitor_exception) { | |
| 720 unlock_if_synchronized_method(state, throw_monitor_exception, install_monitor_exception); | |
| 721 | |
| 722 // Save result (push state before jvmti call and pop it afterwards) and notify jvmti. | |
| 723 notify_method_exit(false, state, NotifyJVMTI, true); | |
| 724 | |
| 725 verify_oop(R17_tos, state); | |
| 726 verify_thread(); | |
| 727 | |
| 728 merge_frames(/*top_frame_sp*/ R21_sender_SP, /*return_pc*/ R0, R11_scratch1, R12_scratch2); | |
| 729 mtlr(R0); | |
| 730 } | |
| 731 | |
| 732 #endif // !CC_INTERP | |
| 733 | |
|
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734 // Lock object |
|
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735 // |
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736 // Registers alive |
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737 // monitor - Address of the BasicObjectLock to be used for locking, |
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738 // which must be initialized with the object to lock. |
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739 // object - Address of the object to be locked. |
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740 // |
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741 void InterpreterMacroAssembler::lock_object(Register monitor, Register object) { |
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742 if (UseHeavyMonitors) { |
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743 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), |
| 14445 | 744 monitor, /*check_for_exceptions=*/true CC_INTERP_ONLY(&& false)); |
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745 } else { |
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746 // template code: |
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747 // |
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748 // markOop displaced_header = obj->mark().set_unlocked(); |
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749 // monitor->lock()->set_displaced_header(displaced_header); |
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750 // if (Atomic::cmpxchg_ptr(/*ex=*/monitor, /*addr*/obj->mark_addr(), /*cmp*/displaced_header) == displaced_header) { |
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751 // // We stored the monitor address into the object's mark word. |
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752 // } else if (THREAD->is_lock_owned((address)displaced_header)) |
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753 // // Simple recursive case. |
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754 // monitor->lock()->set_displaced_header(NULL); |
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755 // } else { |
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756 // // Slow path. |
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757 // InterpreterRuntime::monitorenter(THREAD, monitor); |
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758 // } |
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759 |
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760 const Register displaced_header = R7_ARG5; |
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761 const Register object_mark_addr = R8_ARG6; |
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762 const Register current_header = R9_ARG7; |
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763 const Register tmp = R10_ARG8; |
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764 |
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765 Label done; |
| 14445 | 766 Label cas_failed, slow_case; |
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diff
changeset
|
767 |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
768 assert_different_registers(displaced_header, object_mark_addr, current_header, tmp); |
|
ec28f9c041ff
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goetz
parents:
diff
changeset
|
769 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
770 // markOop displaced_header = obj->mark().set_unlocked(); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
771 |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
772 // Load markOop from object into displaced_header. |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
773 ld(displaced_header, oopDesc::mark_offset_in_bytes(), object); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
774 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
775 if (UseBiasedLocking) { |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
776 biased_locking_enter(CCR0, object, displaced_header, tmp, current_header, done, &slow_case); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
777 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
778 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
779 // Set displaced_header to be (markOop of object | UNLOCK_VALUE). |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
780 ori(displaced_header, displaced_header, markOopDesc::unlocked_value); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
781 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
782 // monitor->lock()->set_displaced_header(displaced_header); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
783 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
784 // Initialize the box (Must happen before we update the object mark!). |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
785 std(displaced_header, BasicObjectLock::lock_offset_in_bytes() + |
| 14445 | 786 BasicLock::displaced_header_offset_in_bytes(), monitor); |
|
14408
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
787 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
788 // if (Atomic::cmpxchg_ptr(/*ex=*/monitor, /*addr*/obj->mark_addr(), /*cmp*/displaced_header) == displaced_header) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
789 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
790 // Store stack address of the BasicObjectLock (this is monitor) into object. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
791 addi(object_mark_addr, object, oopDesc::mark_offset_in_bytes()); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
792 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
793 // Must fence, otherwise, preceding store(s) may float below cmpxchg. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
794 // CmpxchgX sets CCR0 to cmpX(current, displaced). |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
795 fence(); // TODO: replace by MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq ? |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
796 cmpxchgd(/*flag=*/CCR0, |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
797 /*current_value=*/current_header, |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
798 /*compare_value=*/displaced_header, /*exchange_value=*/monitor, |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
799 /*where=*/object_mark_addr, |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
800 MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq, |
| 14445 | 801 MacroAssembler::cmpxchgx_hint_acquire_lock(), |
| 802 noreg, | |
| 803 &cas_failed); | |
|
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
804 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
805 // If the compare-and-exchange succeeded, then we found an unlocked |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
806 // object and we have now locked it. |
| 14445 | 807 b(done); |
| 808 bind(cas_failed); | |
|
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
809 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
810 // } else if (THREAD->is_lock_owned((address)displaced_header)) |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
811 // // Simple recursive case. |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
812 // monitor->lock()->set_displaced_header(NULL); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
813 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
814 // We did not see an unlocked object so try the fast recursive case. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
815 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
816 // Check if owner is self by comparing the value in the markOop of object |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
817 // (current_header) with the stack pointer. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
818 sub(current_header, current_header, R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
819 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
820 assert(os::vm_page_size() > 0xfff, "page size too small - change the constant"); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
821 load_const_optimized(tmp, |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
822 (address) (~(os::vm_page_size()-1) | |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
823 markOopDesc::lock_mask_in_place)); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
824 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
825 and_(R0/*==0?*/, current_header, tmp); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
826 // If condition is true we are done and hence we can store 0 in the displaced |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
827 // header indicating it is a recursive lock. |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
828 bne(CCR0, slow_case); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
829 release(); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
830 std(R0/*==0!*/, BasicObjectLock::lock_offset_in_bytes() + |
| 14445 | 831 BasicLock::displaced_header_offset_in_bytes(), monitor); |
|
14408
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
832 b(done); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
833 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
834 // } else { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
835 // // Slow path. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
836 // InterpreterRuntime::monitorenter(THREAD, monitor); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
837 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
838 // None of the above fast optimizations worked so we have to get into the |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
839 // slow case of monitor enter. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
840 bind(slow_case); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
841 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), |
| 14445 | 842 monitor, /*check_for_exceptions=*/true CC_INTERP_ONLY(&& false)); |
|
14408
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goetz
parents:
diff
changeset
|
843 // } |
| 17804 | 844 align(32, 12); |
|
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
845 bind(done); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
846 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
847 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
848 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
849 // Unlocks an object. Used in monitorexit bytecode and remove_activation. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
850 // |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
851 // Registers alive |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
852 // monitor - Address of the BasicObjectLock to be used for locking, |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
853 // which must be initialized with the object to lock. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
854 // |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
855 // Throw IllegalMonitorException if object is not locked by current thread. |
| 14445 | 856 void InterpreterMacroAssembler::unlock_object(Register monitor, bool check_for_exceptions) { |
|
14408
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
857 if (UseHeavyMonitors) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
858 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), |
| 17804 | 859 monitor, check_for_exceptions CC_INTERP_ONLY(&& false)); |
|
14408
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
860 } else { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
861 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
862 // template code: |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
863 // |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
864 // if ((displaced_header = monitor->displaced_header()) == NULL) { |
| 17804 | 865 // // Recursive unlock. Mark the monitor unlocked by setting the object field to NULL. |
|
14408
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
866 // monitor->set_obj(NULL); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
867 // } else if (Atomic::cmpxchg_ptr(displaced_header, obj->mark_addr(), monitor) == monitor) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
868 // // We swapped the unlocked mark in displaced_header into the object's mark word. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
869 // monitor->set_obj(NULL); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
870 // } else { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
871 // // Slow path. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
872 // InterpreterRuntime::monitorexit(THREAD, monitor); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
873 // } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
874 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
875 const Register object = R7_ARG5; |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
876 const Register displaced_header = R8_ARG6; |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
877 const Register object_mark_addr = R9_ARG7; |
|
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parents:
diff
changeset
|
878 const Register current_header = R10_ARG8; |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
879 |
| 14445 | 880 Label free_slot; |
|
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
881 Label slow_case; |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
882 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
883 assert_different_registers(object, displaced_header, object_mark_addr, current_header); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
884 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
885 if (UseBiasedLocking) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
886 // The object address from the monitor is in object. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
887 ld(object, BasicObjectLock::obj_offset_in_bytes(), monitor); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
888 assert(oopDesc::mark_offset_in_bytes() == 0, "offset of _mark is not 0"); |
| 14445 | 889 biased_locking_exit(CCR0, object, displaced_header, free_slot); |
|
14408
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goetz
parents:
diff
changeset
|
890 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
891 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
892 // Test first if we are in the fast recursive case. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
893 ld(displaced_header, BasicObjectLock::lock_offset_in_bytes() + |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
894 BasicLock::displaced_header_offset_in_bytes(), monitor); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
895 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
896 // If the displaced header is zero, we have a recursive unlock. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
897 cmpdi(CCR0, displaced_header, 0); |
| 14445 | 898 beq(CCR0, free_slot); // recursive unlock |
|
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
899 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
900 // } else if (Atomic::cmpxchg_ptr(displaced_header, obj->mark_addr(), monitor) == monitor) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
901 // // We swapped the unlocked mark in displaced_header into the object's mark word. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
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|
902 // monitor->set_obj(NULL); |
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903 |
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904 // If we still have a lightweight lock, unlock the object and be done. |
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905 |
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906 // The object address from the monitor is in object. |
| 17804 | 907 if (!UseBiasedLocking) { ld(object, BasicObjectLock::obj_offset_in_bytes(), monitor); } |
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908 addi(object_mark_addr, object, oopDesc::mark_offset_in_bytes()); |
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909 |
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910 // We have the displaced header in displaced_header. If the lock is still |
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911 // lightweight, it will contain the monitor address and we'll store the |
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912 // displaced header back into the object's mark word. |
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913 // CmpxchgX sets CCR0 to cmpX(current, monitor). |
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914 cmpxchgd(/*flag=*/CCR0, |
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915 /*current_value=*/current_header, |
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916 /*compare_value=*/monitor, /*exchange_value=*/displaced_header, |
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917 /*where=*/object_mark_addr, |
| 14445 | 918 MacroAssembler::MemBarRel, |
| 919 MacroAssembler::cmpxchgx_hint_release_lock(), | |
| 920 noreg, | |
| 921 &slow_case); | |
| 922 b(free_slot); | |
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923 |
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924 // } else { |
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925 // // Slow path. |
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926 // InterpreterRuntime::monitorexit(THREAD, monitor); |
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927 |
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928 // The lock has been converted into a heavy lock and hence |
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929 // we need to get into the slow case. |
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930 bind(slow_case); |
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931 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), |
| 14445 | 932 monitor, check_for_exceptions CC_INTERP_ONLY(&& false)); |
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933 // } |
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934 |
| 14445 | 935 Label done; |
| 936 b(done); // Monitor register may be overwritten! Runtime has already freed the slot. | |
| 937 | |
| 938 // Exchange worked, do monitor->set_obj(NULL); | |
| 939 align(32, 12); | |
| 940 bind(free_slot); | |
| 941 li(R0, 0); | |
| 942 std(R0, BasicObjectLock::obj_offset_in_bytes(), monitor); | |
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943 bind(done); |
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944 } |
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945 } |
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946 |
| 17804 | 947 #ifndef CC_INTERP |
| 948 | |
| 949 // Load compiled (i2c) or interpreter entry when calling from interpreted and | |
| 950 // do the call. Centralized so that all interpreter calls will do the same actions. | |
| 951 // If jvmti single stepping is on for a thread we must not call compiled code. | |
| 952 // | |
| 953 // Input: | |
| 954 // - Rtarget_method: method to call | |
| 955 // - Rret_addr: return address | |
| 956 // - 2 scratch regs | |
| 957 // | |
| 958 void InterpreterMacroAssembler::call_from_interpreter(Register Rtarget_method, Register Rret_addr, Register Rscratch1, Register Rscratch2) { | |
| 959 assert_different_registers(Rscratch1, Rscratch2, Rtarget_method, Rret_addr); | |
| 960 // Assume we want to go compiled if available. | |
| 961 const Register Rtarget_addr = Rscratch1; | |
| 962 const Register Rinterp_only = Rscratch2; | |
| 963 | |
| 964 ld(Rtarget_addr, in_bytes(Method::from_interpreted_offset()), Rtarget_method); | |
| 965 | |
| 966 if (JvmtiExport::can_post_interpreter_events()) { | |
| 967 lwz(Rinterp_only, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); | |
| 968 | |
| 969 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
| 970 // compiled code in threads for which the event is enabled. Check here for | |
| 971 // interp_only_mode if these events CAN be enabled. | |
| 972 Label done; | |
| 973 verify_thread(); | |
| 974 cmpwi(CCR0, Rinterp_only, 0); | |
| 975 beq(CCR0, done); | |
| 976 ld(Rtarget_addr, in_bytes(Method::interpreter_entry_offset()), Rtarget_method); | |
| 977 align(32, 12); | |
| 978 bind(done); | |
| 979 } | |
| 980 | |
| 981 #ifdef ASSERT | |
| 982 { | |
| 983 Label Lok; | |
| 984 cmpdi(CCR0, Rtarget_addr, 0); | |
| 985 bne(CCR0, Lok); | |
| 986 stop("null entry point"); | |
| 987 bind(Lok); | |
| 988 } | |
| 989 #endif // ASSERT | |
| 990 | |
| 991 mr(R21_sender_SP, R1_SP); | |
| 992 | |
| 993 // Calc a precise SP for the call. The SP value we calculated in | |
| 994 // generate_fixed_frame() is based on the max_stack() value, so we would waste stack space | |
| 995 // if esp is not max. Also, the i2c adapter extends the stack space without restoring | |
| 996 // our pre-calced value, so repeating calls via i2c would result in stack overflow. | |
| 997 // Since esp already points to an empty slot, we just have to sub 1 additional slot | |
| 998 // to meet the abi scratch requirements. | |
| 999 // The max_stack pointer will get restored by means of the GR_Lmax_stack local in | |
| 1000 // the return entry of the interpreter. | |
| 1001 addi(Rscratch2, R15_esp, Interpreter::stackElementSize - frame::abi_reg_args_size); | |
| 1002 clrrdi(Rscratch2, Rscratch2, exact_log2(frame::alignment_in_bytes)); // round towards smaller address | |
| 1003 resize_frame_absolute(Rscratch2, Rscratch2, R0); | |
| 1004 | |
| 1005 mr_if_needed(R19_method, Rtarget_method); | |
| 1006 mtctr(Rtarget_addr); | |
| 1007 mtlr(Rret_addr); | |
| 1008 | |
| 1009 save_interpreter_state(Rscratch2); | |
| 1010 #ifdef ASSERT | |
| 1011 ld(Rscratch1, _ijava_state_neg(top_frame_sp), Rscratch2); // Rscratch2 contains fp | |
| 1012 cmpd(CCR0, R21_sender_SP, Rscratch1); | |
| 1013 asm_assert_eq("top_frame_sp incorrect", 0x951); | |
| 1014 #endif | |
| 1015 | |
| 1016 bctr(); | |
| 1017 } | |
| 1018 | |
| 1019 // Set the method data pointer for the current bcp. | |
| 1020 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
| 1021 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1022 Label get_continue; | |
| 1023 ld(R28_mdx, in_bytes(Method::method_data_offset()), R19_method); | |
| 1024 test_method_data_pointer(get_continue); | |
| 1025 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), R19_method, R14_bcp); | |
| 1026 | |
| 1027 addi(R28_mdx, R28_mdx, in_bytes(MethodData::data_offset())); | |
| 1028 add(R28_mdx, R28_mdx, R3_RET); | |
| 1029 bind(get_continue); | |
| 1030 } | |
| 1031 | |
| 1032 // Test ImethodDataPtr. If it is null, continue at the specified label. | |
| 1033 void InterpreterMacroAssembler::test_method_data_pointer(Label& zero_continue) { | |
| 1034 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1035 cmpdi(CCR0, R28_mdx, 0); | |
| 1036 beq(CCR0, zero_continue); | |
| 1037 } | |
| 1038 | |
| 1039 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
| 1040 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1041 #ifdef ASSERT | |
| 1042 Label verify_continue; | |
| 1043 test_method_data_pointer(verify_continue); | |
| 1044 | |
| 1045 // If the mdp is valid, it will point to a DataLayout header which is | |
| 1046 // consistent with the bcp. The converse is highly probable also. | |
| 1047 lhz(R11_scratch1, in_bytes(DataLayout::bci_offset()), R28_mdx); | |
| 1048 ld(R12_scratch2, in_bytes(Method::const_offset()), R19_method); | |
| 1049 addi(R11_scratch1, R11_scratch1, in_bytes(ConstMethod::codes_offset())); | |
| 1050 add(R11_scratch1, R12_scratch2, R12_scratch2); | |
| 1051 cmpd(CCR0, R11_scratch1, R14_bcp); | |
| 1052 beq(CCR0, verify_continue); | |
| 1053 | |
| 1054 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp ), R19_method, R14_bcp, R28_mdx); | |
| 1055 | |
| 1056 bind(verify_continue); | |
| 1057 #endif | |
| 1058 } | |
| 1059 | |
| 1060 void InterpreterMacroAssembler::test_invocation_counter_for_mdp(Register invocation_count, | |
| 1061 Register Rscratch, | |
| 1062 Label &profile_continue) { | |
| 1063 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1064 // Control will flow to "profile_continue" if the counter is less than the | |
| 1065 // limit or if we call profile_method(). | |
| 1066 Label done; | |
| 1067 | |
| 1068 // If no method data exists, and the counter is high enough, make one. | |
| 1069 int ipl_offs = load_const_optimized(Rscratch, &InvocationCounter::InterpreterProfileLimit, R0, true); | |
| 1070 lwz(Rscratch, ipl_offs, Rscratch); | |
| 1071 | |
| 1072 cmpdi(CCR0, R28_mdx, 0); | |
| 1073 // Test to see if we should create a method data oop. | |
| 1074 cmpd(CCR1, Rscratch /* InterpreterProfileLimit */, invocation_count); | |
| 1075 bne(CCR0, done); | |
| 1076 bge(CCR1, profile_continue); | |
| 1077 | |
| 1078 // Build it now. | |
| 1079 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); | |
| 1080 set_method_data_pointer_for_bcp(); | |
| 1081 b(profile_continue); | |
| 1082 | |
| 1083 align(32, 12); | |
| 1084 bind(done); | |
| 1085 } | |
| 1086 | |
| 1087 void InterpreterMacroAssembler::test_backedge_count_for_osr(Register backedge_count, Register branch_bcp, Register Rtmp) { | |
| 1088 assert_different_registers(backedge_count, Rtmp, branch_bcp); | |
| 1089 assert(UseOnStackReplacement,"Must UseOnStackReplacement to test_backedge_count_for_osr"); | |
| 1090 | |
| 1091 Label did_not_overflow; | |
| 1092 Label overflow_with_error; | |
| 1093 | |
| 1094 int ibbl_offs = load_const_optimized(Rtmp, &InvocationCounter::InterpreterBackwardBranchLimit, R0, true); | |
| 1095 lwz(Rtmp, ibbl_offs, Rtmp); | |
| 1096 cmpw(CCR0, backedge_count, Rtmp); | |
| 1097 | |
| 1098 blt(CCR0, did_not_overflow); | |
| 1099 | |
| 1100 // When ProfileInterpreter is on, the backedge_count comes from the | |
| 1101 // methodDataOop, which value does not get reset on the call to | |
| 1102 // frequency_counter_overflow(). To avoid excessive calls to the overflow | |
| 1103 // routine while the method is being compiled, add a second test to make sure | |
| 1104 // the overflow function is called only once every overflow_frequency. | |
| 1105 if (ProfileInterpreter) { | |
| 1106 const int overflow_frequency = 1024; | |
| 1107 li(Rtmp, overflow_frequency-1); | |
| 1108 andr(Rtmp, Rtmp, backedge_count); | |
| 1109 cmpwi(CCR0, Rtmp, 0); | |
| 1110 bne(CCR0, did_not_overflow); | |
| 1111 } | |
| 1112 | |
| 1113 // Overflow in loop, pass branch bytecode. | |
| 1114 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), branch_bcp, true); | |
| 1115 | |
| 1116 // Was an OSR adapter generated? | |
| 1117 // O0 = osr nmethod | |
| 1118 cmpdi(CCR0, R3_RET, 0); | |
| 1119 beq(CCR0, overflow_with_error); | |
| 1120 | |
| 1121 // Has the nmethod been invalidated already? | |
| 1122 lwz(Rtmp, nmethod::entry_bci_offset(), R3_RET); | |
| 1123 cmpwi(CCR0, Rtmp, InvalidOSREntryBci); | |
| 1124 beq(CCR0, overflow_with_error); | |
| 1125 | |
| 1126 // Migrate the interpreter frame off of the stack. | |
| 1127 // We can use all registers because we will not return to interpreter from this point. | |
| 1128 | |
| 1129 // Save nmethod. | |
| 1130 const Register osr_nmethod = R31; | |
| 1131 mr(osr_nmethod, R3_RET); | |
| 1132 set_top_ijava_frame_at_SP_as_last_Java_frame(R1_SP, R11_scratch1); | |
| 1133 call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin), R16_thread); | |
| 1134 reset_last_Java_frame(); | |
| 1135 // OSR buffer is in ARG1 | |
| 1136 | |
| 1137 // Remove the interpreter frame. | |
| 1138 merge_frames(/*top_frame_sp*/ R21_sender_SP, /*return_pc*/ R0, R11_scratch1, R12_scratch2); | |
| 1139 | |
| 1140 // Jump to the osr code. | |
| 1141 ld(R11_scratch1, nmethod::osr_entry_point_offset(), osr_nmethod); | |
| 1142 mtlr(R0); | |
| 1143 mtctr(R11_scratch1); | |
| 1144 bctr(); | |
| 1145 | |
| 1146 align(32, 12); | |
| 1147 bind(overflow_with_error); | |
| 1148 bind(did_not_overflow); | |
| 1149 } | |
| 1150 | |
| 1151 // Store a value at some constant offset from the method data pointer. | |
| 1152 void InterpreterMacroAssembler::set_mdp_data_at(int constant, Register value) { | |
| 1153 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1154 | |
| 1155 std(value, constant, R28_mdx); | |
| 1156 } | |
| 1157 | |
| 1158 // Increment the value at some constant offset from the method data pointer. | |
| 1159 void InterpreterMacroAssembler::increment_mdp_data_at(int constant, | |
| 1160 Register counter_addr, | |
| 1161 Register Rbumped_count, | |
| 1162 bool decrement) { | |
| 1163 // Locate the counter at a fixed offset from the mdp: | |
| 1164 addi(counter_addr, R28_mdx, constant); | |
| 1165 increment_mdp_data_at(counter_addr, Rbumped_count, decrement); | |
| 1166 } | |
| 1167 | |
| 1168 // Increment the value at some non-fixed (reg + constant) offset from | |
| 1169 // the method data pointer. | |
| 1170 void InterpreterMacroAssembler::increment_mdp_data_at(Register reg, | |
| 1171 int constant, | |
| 1172 Register scratch, | |
| 1173 Register Rbumped_count, | |
| 1174 bool decrement) { | |
| 1175 // Add the constant to reg to get the offset. | |
| 1176 add(scratch, R28_mdx, reg); | |
| 1177 // Then calculate the counter address. | |
| 1178 addi(scratch, scratch, constant); | |
| 1179 increment_mdp_data_at(scratch, Rbumped_count, decrement); | |
| 1180 } | |
| 1181 | |
| 1182 void InterpreterMacroAssembler::increment_mdp_data_at(Register counter_addr, | |
| 1183 Register Rbumped_count, | |
| 1184 bool decrement) { | |
| 1185 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1186 | |
| 1187 // Load the counter. | |
| 1188 ld(Rbumped_count, 0, counter_addr); | |
| 1189 | |
| 1190 if (decrement) { | |
| 1191 // Decrement the register. Set condition codes. | |
| 1192 addi(Rbumped_count, Rbumped_count, - DataLayout::counter_increment); | |
| 1193 // Store the decremented counter, if it is still negative. | |
| 1194 std(Rbumped_count, 0, counter_addr); | |
| 1195 // Note: add/sub overflow check are not ported, since 64 bit | |
| 1196 // calculation should never overflow. | |
| 1197 } else { | |
| 1198 // Increment the register. Set carry flag. | |
| 1199 addi(Rbumped_count, Rbumped_count, DataLayout::counter_increment); | |
| 1200 // Store the incremented counter. | |
| 1201 std(Rbumped_count, 0, counter_addr); | |
| 1202 } | |
| 1203 } | |
| 1204 | |
| 1205 // Set a flag value at the current method data pointer position. | |
| 1206 void InterpreterMacroAssembler::set_mdp_flag_at(int flag_constant, | |
| 1207 Register scratch) { | |
| 1208 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1209 // Load the data header. | |
| 1210 lbz(scratch, in_bytes(DataLayout::flags_offset()), R28_mdx); | |
| 1211 // Set the flag. | |
| 1212 ori(scratch, scratch, flag_constant); | |
| 1213 // Store the modified header. | |
| 1214 stb(scratch, in_bytes(DataLayout::flags_offset()), R28_mdx); | |
| 1215 } | |
| 1216 | |
| 1217 // Test the location at some offset from the method data pointer. | |
| 1218 // If it is not equal to value, branch to the not_equal_continue Label. | |
| 1219 void InterpreterMacroAssembler::test_mdp_data_at(int offset, | |
| 1220 Register value, | |
| 1221 Label& not_equal_continue, | |
| 1222 Register test_out) { | |
| 1223 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1224 | |
| 1225 ld(test_out, offset, R28_mdx); | |
| 1226 cmpd(CCR0, value, test_out); | |
| 1227 bne(CCR0, not_equal_continue); | |
| 1228 } | |
| 1229 | |
| 1230 // Update the method data pointer by the displacement located at some fixed | |
| 1231 // offset from the method data pointer. | |
| 1232 void InterpreterMacroAssembler::update_mdp_by_offset(int offset_of_disp, | |
| 1233 Register scratch) { | |
| 1234 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1235 | |
| 1236 ld(scratch, offset_of_disp, R28_mdx); | |
| 1237 add(R28_mdx, scratch, R28_mdx); | |
| 1238 } | |
| 1239 | |
| 1240 // Update the method data pointer by the displacement located at the | |
| 1241 // offset (reg + offset_of_disp). | |
| 1242 void InterpreterMacroAssembler::update_mdp_by_offset(Register reg, | |
| 1243 int offset_of_disp, | |
| 1244 Register scratch) { | |
| 1245 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1246 | |
| 1247 add(scratch, reg, R28_mdx); | |
| 1248 ld(scratch, offset_of_disp, scratch); | |
| 1249 add(R28_mdx, scratch, R28_mdx); | |
| 1250 } | |
| 1251 | |
| 1252 // Update the method data pointer by a simple constant displacement. | |
| 1253 void InterpreterMacroAssembler::update_mdp_by_constant(int constant) { | |
| 1254 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1255 addi(R28_mdx, R28_mdx, constant); | |
| 1256 } | |
| 1257 | |
| 1258 // Update the method data pointer for a _ret bytecode whose target | |
| 1259 // was not among our cached targets. | |
| 1260 void InterpreterMacroAssembler::update_mdp_for_ret(TosState state, | |
| 1261 Register return_bci) { | |
| 1262 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1263 | |
| 1264 push(state); | |
| 1265 assert(return_bci->is_nonvolatile(), "need to protect return_bci"); | |
| 1266 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); | |
| 1267 pop(state); | |
| 1268 } | |
| 1269 | |
| 1270 // Increments the backedge counter. | |
| 1271 // Returns backedge counter + invocation counter in Rdst. | |
| 1272 void InterpreterMacroAssembler::increment_backedge_counter(const Register Rcounters, const Register Rdst, | |
| 1273 const Register Rtmp1, Register Rscratch) { | |
| 1274 assert(UseCompiler, "incrementing must be useful"); | |
| 1275 assert_different_registers(Rdst, Rtmp1); | |
| 1276 const Register invocation_counter = Rtmp1; | |
| 1277 const Register counter = Rdst; | |
| 1278 // TODO ppc port assert(4 == InvocationCounter::sz_counter(), "unexpected field size."); | |
| 1279 | |
| 1280 // Load backedge counter. | |
| 1281 lwz(counter, in_bytes(MethodCounters::backedge_counter_offset()) + | |
| 1282 in_bytes(InvocationCounter::counter_offset()), Rcounters); | |
| 1283 // Load invocation counter. | |
| 1284 lwz(invocation_counter, in_bytes(MethodCounters::invocation_counter_offset()) + | |
| 1285 in_bytes(InvocationCounter::counter_offset()), Rcounters); | |
| 1286 | |
| 1287 // Add the delta to the backedge counter. | |
| 1288 addi(counter, counter, InvocationCounter::count_increment); | |
| 1289 | |
| 1290 // Mask the invocation counter. | |
| 1291 li(Rscratch, InvocationCounter::count_mask_value); | |
| 1292 andr(invocation_counter, invocation_counter, Rscratch); | |
| 1293 | |
| 1294 // Store new counter value. | |
| 1295 stw(counter, in_bytes(MethodCounters::backedge_counter_offset()) + | |
| 1296 in_bytes(InvocationCounter::counter_offset()), Rcounters); | |
| 1297 // Return invocation counter + backedge counter. | |
| 1298 add(counter, counter, invocation_counter); | |
| 1299 } | |
| 1300 | |
| 1301 // Count a taken branch in the bytecodes. | |
| 1302 void InterpreterMacroAssembler::profile_taken_branch(Register scratch, Register bumped_count) { | |
| 1303 if (ProfileInterpreter) { | |
| 1304 Label profile_continue; | |
| 1305 | |
| 1306 // If no method data exists, go to profile_continue. | |
| 1307 test_method_data_pointer(profile_continue); | |
| 1308 | |
| 1309 // We are taking a branch. Increment the taken count. | |
| 1310 increment_mdp_data_at(in_bytes(JumpData::taken_offset()), scratch, bumped_count); | |
| 1311 | |
| 1312 // The method data pointer needs to be updated to reflect the new target. | |
| 1313 update_mdp_by_offset(in_bytes(JumpData::displacement_offset()), scratch); | |
| 1314 bind (profile_continue); | |
| 1315 } | |
| 1316 } | |
| 1317 | |
| 1318 // Count a not-taken branch in the bytecodes. | |
| 1319 void InterpreterMacroAssembler::profile_not_taken_branch(Register scratch1, Register scratch2) { | |
| 1320 if (ProfileInterpreter) { | |
| 1321 Label profile_continue; | |
| 1322 | |
| 1323 // If no method data exists, go to profile_continue. | |
| 1324 test_method_data_pointer(profile_continue); | |
| 1325 | |
| 1326 // We are taking a branch. Increment the not taken count. | |
| 1327 increment_mdp_data_at(in_bytes(BranchData::not_taken_offset()), scratch1, scratch2); | |
| 1328 | |
| 1329 // The method data pointer needs to be updated to correspond to the | |
| 1330 // next bytecode. | |
| 1331 update_mdp_by_constant(in_bytes(BranchData::branch_data_size())); | |
| 1332 bind (profile_continue); | |
| 1333 } | |
| 1334 } | |
| 1335 | |
| 1336 // Count a non-virtual call in the bytecodes. | |
| 1337 void InterpreterMacroAssembler::profile_call(Register scratch1, Register scratch2) { | |
| 1338 if (ProfileInterpreter) { | |
| 1339 Label profile_continue; | |
| 1340 | |
| 1341 // If no method data exists, go to profile_continue. | |
| 1342 test_method_data_pointer(profile_continue); | |
| 1343 | |
| 1344 // We are making a call. Increment the count. | |
| 1345 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
| 1346 | |
| 1347 // The method data pointer needs to be updated to reflect the new target. | |
| 1348 update_mdp_by_constant(in_bytes(CounterData::counter_data_size())); | |
| 1349 bind (profile_continue); | |
| 1350 } | |
| 1351 } | |
| 1352 | |
| 1353 // Count a final call in the bytecodes. | |
| 1354 void InterpreterMacroAssembler::profile_final_call(Register scratch1, Register scratch2) { | |
| 1355 if (ProfileInterpreter) { | |
| 1356 Label profile_continue; | |
| 1357 | |
| 1358 // If no method data exists, go to profile_continue. | |
| 1359 test_method_data_pointer(profile_continue); | |
| 1360 | |
| 1361 // We are making a call. Increment the count. | |
| 1362 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
| 1363 | |
| 1364 // The method data pointer needs to be updated to reflect the new target. | |
| 1365 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); | |
| 1366 bind (profile_continue); | |
| 1367 } | |
| 1368 } | |
| 1369 | |
| 1370 // Count a virtual call in the bytecodes. | |
| 1371 void InterpreterMacroAssembler::profile_virtual_call(Register Rreceiver, | |
| 1372 Register Rscratch1, | |
| 1373 Register Rscratch2, | |
| 1374 bool receiver_can_be_null) { | |
| 1375 if (!ProfileInterpreter) { return; } | |
| 1376 Label profile_continue; | |
| 1377 | |
| 1378 // If no method data exists, go to profile_continue. | |
| 1379 test_method_data_pointer(profile_continue); | |
| 1380 | |
| 1381 Label skip_receiver_profile; | |
| 1382 if (receiver_can_be_null) { | |
| 1383 Label not_null; | |
| 1384 cmpdi(CCR0, Rreceiver, 0); | |
| 1385 bne(CCR0, not_null); | |
| 1386 // We are making a call. Increment the count for null receiver. | |
| 1387 increment_mdp_data_at(in_bytes(CounterData::count_offset()), Rscratch1, Rscratch2); | |
| 1388 b(skip_receiver_profile); | |
| 1389 bind(not_null); | |
| 1390 } | |
| 1391 | |
| 1392 // Record the receiver type. | |
| 1393 record_klass_in_profile(Rreceiver, Rscratch1, Rscratch2, true); | |
| 1394 bind(skip_receiver_profile); | |
| 1395 | |
| 1396 // The method data pointer needs to be updated to reflect the new target. | |
| 1397 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); | |
| 1398 bind (profile_continue); | |
| 1399 } | |
| 1400 | |
| 1401 void InterpreterMacroAssembler::profile_typecheck(Register Rklass, Register Rscratch1, Register Rscratch2) { | |
| 1402 if (ProfileInterpreter) { | |
| 1403 Label profile_continue; | |
| 1404 | |
| 1405 // If no method data exists, go to profile_continue. | |
| 1406 test_method_data_pointer(profile_continue); | |
| 1407 | |
| 1408 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1409 if (TypeProfileCasts) { | |
| 1410 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1411 | |
| 1412 // Record the object type. | |
| 1413 record_klass_in_profile(Rklass, Rscratch1, Rscratch2, false); | |
| 1414 } | |
| 1415 | |
| 1416 // The method data pointer needs to be updated. | |
| 1417 update_mdp_by_constant(mdp_delta); | |
| 1418 | |
| 1419 bind (profile_continue); | |
| 1420 } | |
| 1421 } | |
| 1422 | |
| 1423 void InterpreterMacroAssembler::profile_typecheck_failed(Register Rscratch1, Register Rscratch2) { | |
| 1424 if (ProfileInterpreter && TypeProfileCasts) { | |
| 1425 Label profile_continue; | |
| 1426 | |
| 1427 // If no method data exists, go to profile_continue. | |
| 1428 test_method_data_pointer(profile_continue); | |
| 1429 | |
| 1430 int count_offset = in_bytes(CounterData::count_offset()); | |
| 1431 // Back up the address, since we have already bumped the mdp. | |
| 1432 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1433 | |
| 1434 // *Decrement* the counter. We expect to see zero or small negatives. | |
| 1435 increment_mdp_data_at(count_offset, Rscratch1, Rscratch2, true); | |
| 1436 | |
| 1437 bind (profile_continue); | |
| 1438 } | |
| 1439 } | |
| 1440 | |
| 1441 // Count a ret in the bytecodes. | |
| 1442 void InterpreterMacroAssembler::profile_ret(TosState state, Register return_bci, Register scratch1, Register scratch2) { | |
| 1443 if (ProfileInterpreter) { | |
| 1444 Label profile_continue; | |
| 1445 uint row; | |
| 1446 | |
| 1447 // If no method data exists, go to profile_continue. | |
| 1448 test_method_data_pointer(profile_continue); | |
| 1449 | |
| 1450 // Update the total ret count. | |
| 1451 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2 ); | |
| 1452 | |
| 1453 for (row = 0; row < RetData::row_limit(); row++) { | |
| 1454 Label next_test; | |
| 1455 | |
| 1456 // See if return_bci is equal to bci[n]: | |
| 1457 test_mdp_data_at(in_bytes(RetData::bci_offset(row)), return_bci, next_test, scratch1); | |
| 1458 | |
| 1459 // return_bci is equal to bci[n]. Increment the count. | |
| 1460 increment_mdp_data_at(in_bytes(RetData::bci_count_offset(row)), scratch1, scratch2); | |
| 1461 | |
| 1462 // The method data pointer needs to be updated to reflect the new target. | |
| 1463 update_mdp_by_offset(in_bytes(RetData::bci_displacement_offset(row)), scratch1); | |
| 1464 b(profile_continue); | |
| 1465 bind(next_test); | |
| 1466 } | |
| 1467 | |
| 1468 update_mdp_for_ret(state, return_bci); | |
| 1469 | |
| 1470 bind (profile_continue); | |
| 1471 } | |
| 1472 } | |
| 1473 | |
| 1474 // Count the default case of a switch construct. | |
| 1475 void InterpreterMacroAssembler::profile_switch_default(Register scratch1, Register scratch2) { | |
| 1476 if (ProfileInterpreter) { | |
| 1477 Label profile_continue; | |
| 1478 | |
| 1479 // If no method data exists, go to profile_continue. | |
| 1480 test_method_data_pointer(profile_continue); | |
| 1481 | |
| 1482 // Update the default case count | |
| 1483 increment_mdp_data_at(in_bytes(MultiBranchData::default_count_offset()), | |
| 1484 scratch1, scratch2); | |
| 1485 | |
| 1486 // The method data pointer needs to be updated. | |
| 1487 update_mdp_by_offset(in_bytes(MultiBranchData::default_displacement_offset()), | |
| 1488 scratch1); | |
| 1489 | |
| 1490 bind (profile_continue); | |
| 1491 } | |
| 1492 } | |
| 1493 | |
| 1494 // Count the index'th case of a switch construct. | |
| 1495 void InterpreterMacroAssembler::profile_switch_case(Register index, | |
| 1496 Register scratch1, | |
| 1497 Register scratch2, | |
| 1498 Register scratch3) { | |
| 1499 if (ProfileInterpreter) { | |
| 1500 assert_different_registers(index, scratch1, scratch2, scratch3); | |
| 1501 Label profile_continue; | |
| 1502 | |
| 1503 // If no method data exists, go to profile_continue. | |
| 1504 test_method_data_pointer(profile_continue); | |
| 1505 | |
| 1506 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes(). | |
| 1507 li(scratch3, in_bytes(MultiBranchData::case_array_offset())); | |
| 1508 | |
| 1509 assert (in_bytes(MultiBranchData::per_case_size()) == 16, "so that shladd works"); | |
| 1510 sldi(scratch1, index, exact_log2(in_bytes(MultiBranchData::per_case_size()))); | |
| 1511 add(scratch1, scratch1, scratch3); | |
| 1512 | |
| 1513 // Update the case count. | |
| 1514 increment_mdp_data_at(scratch1, in_bytes(MultiBranchData::relative_count_offset()), scratch2, scratch3); | |
| 1515 | |
| 1516 // The method data pointer needs to be updated. | |
| 1517 update_mdp_by_offset(scratch1, in_bytes(MultiBranchData::relative_displacement_offset()), scratch2); | |
| 1518 | |
| 1519 bind (profile_continue); | |
| 1520 } | |
| 1521 } | |
| 1522 | |
| 1523 void InterpreterMacroAssembler::profile_null_seen(Register Rscratch1, Register Rscratch2) { | |
| 1524 if (ProfileInterpreter) { | |
| 1525 assert_different_registers(Rscratch1, Rscratch2); | |
| 1526 Label profile_continue; | |
| 1527 | |
| 1528 // If no method data exists, go to profile_continue. | |
| 1529 test_method_data_pointer(profile_continue); | |
| 1530 | |
| 1531 set_mdp_flag_at(BitData::null_seen_byte_constant(), Rscratch1); | |
| 1532 | |
| 1533 // The method data pointer needs to be updated. | |
| 1534 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1535 if (TypeProfileCasts) { | |
| 1536 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1537 } | |
| 1538 update_mdp_by_constant(mdp_delta); | |
| 1539 | |
| 1540 bind (profile_continue); | |
| 1541 } | |
| 1542 } | |
| 1543 | |
| 1544 void InterpreterMacroAssembler::record_klass_in_profile(Register Rreceiver, | |
| 1545 Register Rscratch1, Register Rscratch2, | |
| 1546 bool is_virtual_call) { | |
| 1547 assert(ProfileInterpreter, "must be profiling"); | |
| 1548 assert_different_registers(Rreceiver, Rscratch1, Rscratch2); | |
| 1549 | |
| 1550 Label done; | |
| 1551 record_klass_in_profile_helper(Rreceiver, Rscratch1, Rscratch2, 0, done, is_virtual_call); | |
| 1552 bind (done); | |
| 1553 } | |
| 1554 | |
| 1555 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
| 1556 Register receiver, Register scratch1, Register scratch2, | |
| 1557 int start_row, Label& done, bool is_virtual_call) { | |
| 1558 if (TypeProfileWidth == 0) { | |
| 1559 if (is_virtual_call) { | |
| 1560 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
| 1561 } | |
| 1562 return; | |
| 1563 } | |
| 1564 | |
| 1565 int last_row = VirtualCallData::row_limit() - 1; | |
| 1566 assert(start_row <= last_row, "must be work left to do"); | |
| 1567 // Test this row for both the receiver and for null. | |
| 1568 // Take any of three different outcomes: | |
| 1569 // 1. found receiver => increment count and goto done | |
| 1570 // 2. found null => keep looking for case 1, maybe allocate this cell | |
| 1571 // 3. found something else => keep looking for cases 1 and 2 | |
| 1572 // Case 3 is handled by a recursive call. | |
| 1573 for (int row = start_row; row <= last_row; row++) { | |
| 1574 Label next_test; | |
| 1575 bool test_for_null_also = (row == start_row); | |
| 1576 | |
| 1577 // See if the receiver is receiver[n]. | |
| 1578 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
| 1579 test_mdp_data_at(recvr_offset, receiver, next_test, scratch1); | |
| 1580 // delayed()->tst(scratch); | |
| 1581 | |
| 1582 // The receiver is receiver[n]. Increment count[n]. | |
| 1583 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
| 1584 increment_mdp_data_at(count_offset, scratch1, scratch2); | |
| 1585 b(done); | |
| 1586 bind(next_test); | |
| 1587 | |
| 1588 if (test_for_null_also) { | |
| 1589 Label found_null; | |
| 1590 // Failed the equality check on receiver[n]... Test for null. | |
| 1591 if (start_row == last_row) { | |
| 1592 // The only thing left to do is handle the null case. | |
| 1593 if (is_virtual_call) { | |
| 1594 // Scratch1 contains test_out from test_mdp_data_at. | |
| 1595 cmpdi(CCR0, scratch1, 0); | |
| 1596 beq(CCR0, found_null); | |
| 1597 // Receiver did not match any saved receiver and there is no empty row for it. | |
| 1598 // Increment total counter to indicate polymorphic case. | |
| 1599 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
| 1600 b(done); | |
| 1601 bind(found_null); | |
| 1602 } else { | |
| 1603 cmpdi(CCR0, scratch1, 0); | |
| 1604 bne(CCR0, done); | |
| 1605 } | |
| 1606 break; | |
| 1607 } | |
| 1608 // Since null is rare, make it be the branch-taken case. | |
| 1609 cmpdi(CCR0, scratch1, 0); | |
| 1610 beq(CCR0, found_null); | |
| 1611 | |
| 1612 // Put all the "Case 3" tests here. | |
| 1613 record_klass_in_profile_helper(receiver, scratch1, scratch2, start_row + 1, done, is_virtual_call); | |
| 1614 | |
| 1615 // Found a null. Keep searching for a matching receiver, | |
| 1616 // but remember that this is an empty (unused) slot. | |
| 1617 bind(found_null); | |
| 1618 } | |
| 1619 } | |
| 1620 | |
| 1621 // In the fall-through case, we found no matching receiver, but we | |
| 1622 // observed the receiver[start_row] is NULL. | |
| 1623 | |
| 1624 // Fill in the receiver field and increment the count. | |
| 1625 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
| 1626 set_mdp_data_at(recvr_offset, receiver); | |
| 1627 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
| 1628 li(scratch1, DataLayout::counter_increment); | |
| 1629 set_mdp_data_at(count_offset, scratch1); | |
| 1630 if (start_row > 0) { | |
| 1631 b(done); | |
| 1632 } | |
| 1633 } | |
| 1634 | |
| 1635 // Add a InterpMonitorElem to stack (see frame_sparc.hpp). | |
| 1636 void InterpreterMacroAssembler::add_monitor_to_stack(bool stack_is_empty, Register Rtemp1, Register Rtemp2) { | |
| 1637 | |
| 1638 // Very-local scratch registers. | |
| 1639 const Register esp = Rtemp1; | |
| 1640 const Register slot = Rtemp2; | |
| 1641 | |
| 1642 // Extracted monitor_size. | |
| 1643 int monitor_size = frame::interpreter_frame_monitor_size_in_bytes(); | |
| 1644 assert(Assembler::is_aligned((unsigned int)monitor_size, | |
| 1645 (unsigned int)frame::alignment_in_bytes), | |
| 1646 "size of a monitor must respect alignment of SP"); | |
| 1647 | |
| 1648 resize_frame(-monitor_size, /*temp*/esp); // Allocate space for new monitor | |
| 1649 std(R1_SP, _ijava_state_neg(top_frame_sp), esp); // esp contains fp | |
| 1650 | |
| 1651 // Shuffle expression stack down. Recall that stack_base points | |
| 1652 // just above the new expression stack bottom. Old_tos and new_tos | |
| 1653 // are used to scan thru the old and new expression stacks. | |
| 1654 if (!stack_is_empty) { | |
| 1655 Label copy_slot, copy_slot_finished; | |
| 1656 const Register n_slots = slot; | |
| 1657 | |
| 1658 addi(esp, R15_esp, Interpreter::stackElementSize); // Point to first element (pre-pushed stack). | |
| 1659 subf(n_slots, esp, R26_monitor); | |
| 1660 srdi_(n_slots, n_slots, LogBytesPerWord); // Compute number of slots to copy. | |
| 1661 assert(LogBytesPerWord == 3, "conflicts assembler instructions"); | |
| 1662 beq(CCR0, copy_slot_finished); // Nothing to copy. | |
| 1663 | |
| 1664 mtctr(n_slots); | |
| 1665 | |
| 1666 // loop | |
| 1667 bind(copy_slot); | |
| 1668 ld(slot, 0, esp); // Move expression stack down. | |
| 1669 std(slot, -monitor_size, esp); // distance = monitor_size | |
| 1670 addi(esp, esp, BytesPerWord); | |
| 1671 bdnz(copy_slot); | |
| 1672 | |
| 1673 bind(copy_slot_finished); | |
| 1674 } | |
| 1675 | |
| 1676 addi(R15_esp, R15_esp, -monitor_size); | |
| 1677 addi(R26_monitor, R26_monitor, -monitor_size); | |
| 1678 | |
| 1679 // Restart interpreter | |
| 1680 } | |
| 1681 | |
| 1682 // ============================================================================ | |
| 1683 // Java locals access | |
| 1684 | |
| 1685 // Load a local variable at index in Rindex into register Rdst_value. | |
| 1686 // Also puts address of local into Rdst_address as a service. | |
| 1687 // Kills: | |
| 1688 // - Rdst_value | |
| 1689 // - Rdst_address | |
| 1690 void InterpreterMacroAssembler::load_local_int(Register Rdst_value, Register Rdst_address, Register Rindex) { | |
| 1691 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 1692 subf(Rdst_address, Rdst_address, R18_locals); | |
| 1693 lwz(Rdst_value, 0, Rdst_address); | |
| 1694 } | |
| 1695 | |
| 1696 // Load a local variable at index in Rindex into register Rdst_value. | |
| 1697 // Also puts address of local into Rdst_address as a service. | |
| 1698 // Kills: | |
| 1699 // - Rdst_value | |
| 1700 // - Rdst_address | |
| 1701 void InterpreterMacroAssembler::load_local_long(Register Rdst_value, Register Rdst_address, Register Rindex) { | |
| 1702 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 1703 subf(Rdst_address, Rdst_address, R18_locals); | |
| 1704 ld(Rdst_value, -8, Rdst_address); | |
| 1705 } | |
| 1706 | |
| 1707 // Load a local variable at index in Rindex into register Rdst_value. | |
| 1708 // Also puts address of local into Rdst_address as a service. | |
| 1709 // Input: | |
| 1710 // - Rindex: slot nr of local variable | |
| 1711 // Kills: | |
| 1712 // - Rdst_value | |
| 1713 // - Rdst_address | |
| 1714 void InterpreterMacroAssembler::load_local_ptr(Register Rdst_value, Register Rdst_address, Register Rindex) { | |
| 1715 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 1716 subf(Rdst_address, Rdst_address, R18_locals); | |
| 1717 ld(Rdst_value, 0, Rdst_address); | |
| 1718 } | |
| 1719 | |
| 1720 // Load a local variable at index in Rindex into register Rdst_value. | |
| 1721 // Also puts address of local into Rdst_address as a service. | |
| 1722 // Kills: | |
| 1723 // - Rdst_value | |
| 1724 // - Rdst_address | |
| 1725 void InterpreterMacroAssembler::load_local_float(FloatRegister Rdst_value, Register Rdst_address, Register Rindex) { | |
| 1726 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 1727 subf(Rdst_address, Rdst_address, R18_locals); | |
| 1728 lfs(Rdst_value, 0, Rdst_address); | |
| 1729 } | |
| 1730 | |
| 1731 // Load a local variable at index in Rindex into register Rdst_value. | |
| 1732 // Also puts address of local into Rdst_address as a service. | |
| 1733 // Kills: | |
| 1734 // - Rdst_value | |
| 1735 // - Rdst_address | |
| 1736 void InterpreterMacroAssembler::load_local_double(FloatRegister Rdst_value, Register Rdst_address, Register Rindex) { | |
| 1737 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 1738 subf(Rdst_address, Rdst_address, R18_locals); | |
| 1739 lfd(Rdst_value, -8, Rdst_address); | |
| 1740 } | |
| 1741 | |
| 1742 // Store an int value at local variable slot Rindex. | |
| 1743 // Kills: | |
| 1744 // - Rindex | |
| 1745 void InterpreterMacroAssembler::store_local_int(Register Rvalue, Register Rindex) { | |
| 1746 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 1747 subf(Rindex, Rindex, R18_locals); | |
| 1748 stw(Rvalue, 0, Rindex); | |
| 1749 } | |
| 1750 | |
| 1751 // Store a long value at local variable slot Rindex. | |
| 1752 // Kills: | |
| 1753 // - Rindex | |
| 1754 void InterpreterMacroAssembler::store_local_long(Register Rvalue, Register Rindex) { | |
| 1755 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 1756 subf(Rindex, Rindex, R18_locals); | |
| 1757 std(Rvalue, -8, Rindex); | |
| 1758 } | |
| 1759 | |
| 1760 // Store an oop value at local variable slot Rindex. | |
| 1761 // Kills: | |
| 1762 // - Rindex | |
| 1763 void InterpreterMacroAssembler::store_local_ptr(Register Rvalue, Register Rindex) { | |
| 1764 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 1765 subf(Rindex, Rindex, R18_locals); | |
| 1766 std(Rvalue, 0, Rindex); | |
| 1767 } | |
| 1768 | |
| 1769 // Store an int value at local variable slot Rindex. | |
| 1770 // Kills: | |
| 1771 // - Rindex | |
| 1772 void InterpreterMacroAssembler::store_local_float(FloatRegister Rvalue, Register Rindex) { | |
| 1773 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 1774 subf(Rindex, Rindex, R18_locals); | |
| 1775 stfs(Rvalue, 0, Rindex); | |
| 1776 } | |
| 1777 | |
| 1778 // Store an int value at local variable slot Rindex. | |
| 1779 // Kills: | |
| 1780 // - Rindex | |
| 1781 void InterpreterMacroAssembler::store_local_double(FloatRegister Rvalue, Register Rindex) { | |
| 1782 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 1783 subf(Rindex, Rindex, R18_locals); | |
| 1784 stfd(Rvalue, -8, Rindex); | |
| 1785 } | |
| 1786 | |
| 1787 // Read pending exception from thread and jump to interpreter. | |
| 1788 // Throw exception entry if one if pending. Fall through otherwise. | |
| 1789 void InterpreterMacroAssembler::check_and_forward_exception(Register Rscratch1, Register Rscratch2) { | |
| 1790 assert_different_registers(Rscratch1, Rscratch2, R3); | |
| 1791 Register Rexception = Rscratch1; | |
| 1792 Register Rtmp = Rscratch2; | |
| 1793 Label Ldone; | |
| 1794 // Get pending exception oop. | |
| 1795 ld(Rexception, thread_(pending_exception)); | |
| 1796 cmpdi(CCR0, Rexception, 0); | |
| 1797 beq(CCR0, Ldone); | |
| 1798 li(Rtmp, 0); | |
| 1799 mr_if_needed(R3, Rexception); | |
| 1800 std(Rtmp, thread_(pending_exception)); // Clear exception in thread | |
| 1801 if (Interpreter::rethrow_exception_entry() != NULL) { | |
| 1802 // Already got entry address. | |
| 1803 load_dispatch_table(Rtmp, (address*)Interpreter::rethrow_exception_entry()); | |
| 1804 } else { | |
| 1805 // Dynamically load entry address. | |
| 1806 int simm16_rest = load_const_optimized(Rtmp, &Interpreter::_rethrow_exception_entry, R0, true); | |
| 1807 ld(Rtmp, simm16_rest, Rtmp); | |
| 1808 } | |
| 1809 mtctr(Rtmp); | |
| 1810 save_interpreter_state(Rtmp); | |
| 1811 bctr(); | |
| 1812 | |
| 1813 align(32, 12); | |
| 1814 bind(Ldone); | |
| 1815 } | |
| 1816 | |
| 1817 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, bool check_exceptions) { | |
| 1818 save_interpreter_state(R11_scratch1); | |
| 1819 | |
| 1820 MacroAssembler::call_VM(oop_result, entry_point, false); | |
| 1821 | |
| 1822 restore_interpreter_state(R11_scratch1, /*bcp_and_mdx_only*/ true); | |
| 1823 | |
| 1824 check_and_handle_popframe(R11_scratch1); | |
| 1825 check_and_handle_earlyret(R11_scratch1); | |
| 1826 // Now check exceptions manually. | |
| 1827 if (check_exceptions) { | |
| 1828 check_and_forward_exception(R11_scratch1, R12_scratch2); | |
| 1829 } | |
| 1830 } | |
| 1831 | |
| 1832 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, bool check_exceptions) { | |
| 1833 // ARG1 is reserved for the thread. | |
| 1834 mr_if_needed(R4_ARG2, arg_1); | |
| 1835 call_VM(oop_result, entry_point, check_exceptions); | |
| 1836 } | |
| 1837 | |
| 1838 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, bool check_exceptions) { | |
| 1839 // ARG1 is reserved for the thread. | |
| 1840 mr_if_needed(R4_ARG2, arg_1); | |
| 1841 assert(arg_2 != R4_ARG2, "smashed argument"); | |
| 1842 mr_if_needed(R5_ARG3, arg_2); | |
| 1843 call_VM(oop_result, entry_point, check_exceptions); | |
| 1844 } | |
| 1845 | |
| 1846 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, Register arg_3, bool check_exceptions) { | |
| 1847 // ARG1 is reserved for the thread. | |
| 1848 mr_if_needed(R4_ARG2, arg_1); | |
| 1849 assert(arg_2 != R4_ARG2, "smashed argument"); | |
| 1850 mr_if_needed(R5_ARG3, arg_2); | |
| 1851 assert(arg_3 != R4_ARG2 && arg_3 != R5_ARG3, "smashed argument"); | |
| 1852 mr_if_needed(R6_ARG4, arg_3); | |
| 1853 call_VM(oop_result, entry_point, check_exceptions); | |
| 1854 } | |
| 1855 | |
| 1856 void InterpreterMacroAssembler::save_interpreter_state(Register scratch) { | |
| 1857 ld(scratch, 0, R1_SP); | |
| 1858 std(R15_esp, _ijava_state_neg(esp), scratch); | |
| 1859 std(R14_bcp, _ijava_state_neg(bcp), scratch); | |
| 1860 std(R26_monitor, _ijava_state_neg(monitors), scratch); | |
| 1861 if (ProfileInterpreter) { std(R28_mdx, _ijava_state_neg(mdx), scratch); } | |
| 1862 // Other entries should be unchanged. | |
| 1863 } | |
| 1864 | |
| 1865 void InterpreterMacroAssembler::restore_interpreter_state(Register scratch, bool bcp_and_mdx_only) { | |
| 1866 ld(scratch, 0, R1_SP); | |
| 1867 ld(R14_bcp, _ijava_state_neg(bcp), scratch); // Changed by VM code (exception). | |
| 1868 if (ProfileInterpreter) { ld(R28_mdx, _ijava_state_neg(mdx), scratch); } // Changed by VM code. | |
| 1869 if (!bcp_and_mdx_only) { | |
| 1870 // Following ones are Metadata. | |
| 1871 ld(R19_method, _ijava_state_neg(method), scratch); | |
| 1872 ld(R27_constPoolCache, _ijava_state_neg(cpoolCache), scratch); | |
| 1873 // Following ones are stack addresses and don't require reload. | |
| 1874 ld(R15_esp, _ijava_state_neg(esp), scratch); | |
| 1875 ld(R18_locals, _ijava_state_neg(locals), scratch); | |
| 1876 ld(R26_monitor, _ijava_state_neg(monitors), scratch); | |
| 1877 } | |
| 1878 #ifdef ASSERT | |
| 1879 { | |
| 1880 Label Lok; | |
| 1881 subf(R0, R1_SP, scratch); | |
| 1882 cmpdi(CCR0, R0, frame::abi_reg_args_size + frame::ijava_state_size); | |
| 1883 bge(CCR0, Lok); | |
| 1884 stop("frame too small (restore istate)", 0x5432); | |
| 1885 bind(Lok); | |
| 1886 } | |
| 1887 { | |
| 1888 Label Lok; | |
| 1889 ld(R0, _ijava_state_neg(ijava_reserved), scratch); | |
| 1890 cmpdi(CCR0, R0, 0x5afe); | |
| 1891 beq(CCR0, Lok); | |
| 1892 stop("frame corrupted (restore istate)", 0x5afe); | |
| 1893 bind(Lok); | |
| 1894 } | |
| 1895 #endif | |
| 1896 } | |
| 1897 | |
| 1898 #endif // !CC_INTERP | |
| 1899 | |
|
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1900 void InterpreterMacroAssembler::get_method_counters(Register method, |
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1901 Register Rcounters, |
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1902 Label& skip) { |
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1903 BLOCK_COMMENT("Load and ev. allocate counter object {"); |
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1904 Label has_counters; |
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1905 ld(Rcounters, in_bytes(Method::method_counters_offset()), method); |
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1906 cmpdi(CCR0, Rcounters, 0); |
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1907 bne(CCR0, has_counters); |
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1908 call_VM(noreg, CAST_FROM_FN_PTR(address, |
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1909 InterpreterRuntime::build_method_counters), method, false); |
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1910 ld(Rcounters, in_bytes(Method::method_counters_offset()), method); |
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1911 cmpdi(CCR0, Rcounters, 0); |
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1912 beq(CCR0, skip); // No MethodCounters, OutOfMemory. |
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1913 BLOCK_COMMENT("} Load and ev. allocate counter object"); |
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1914 |
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1915 bind(has_counters); |
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1916 } |
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1917 |
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1918 void InterpreterMacroAssembler::increment_invocation_counter(Register Rcounters, Register iv_be_count, Register Rtmp_r0) { |
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1919 assert(UseCompiler, "incrementing must be useful"); |
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1920 Register invocation_count = iv_be_count; |
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1921 Register backedge_count = Rtmp_r0; |
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1922 int delta = InvocationCounter::count_increment; |
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1923 |
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1924 // Load each counter in a register. |
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1925 // ld(inv_counter, Rtmp); |
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1926 // ld(be_counter, Rtmp2); |
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1927 int inv_counter_offset = in_bytes(MethodCounters::invocation_counter_offset() + |
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1928 InvocationCounter::counter_offset()); |
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1929 int be_counter_offset = in_bytes(MethodCounters::backedge_counter_offset() + |
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1930 InvocationCounter::counter_offset()); |
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1931 |
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1932 BLOCK_COMMENT("Increment profiling counters {"); |
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1933 |
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1934 // Load the backedge counter. |
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1935 lwz(backedge_count, be_counter_offset, Rcounters); // is unsigned int |
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1936 // Mask the backedge counter. |
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1937 Register tmp = invocation_count; |
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1938 li(tmp, InvocationCounter::count_mask_value); |
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1939 andr(backedge_count, tmp, backedge_count); // Cannot use andi, need sign extension of count_mask_value. |
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1940 |
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1941 // Load the invocation counter. |
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1942 lwz(invocation_count, inv_counter_offset, Rcounters); // is unsigned int |
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1943 // Add the delta to the invocation counter and store the result. |
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1944 addi(invocation_count, invocation_count, delta); |
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1945 // Store value. |
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1946 stw(invocation_count, inv_counter_offset, Rcounters); |
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1947 |
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1948 // Add invocation counter + backedge counter. |
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1949 add(iv_be_count, backedge_count, invocation_count); |
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1950 |
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1951 // Note that this macro must leave the backedge_count + invocation_count in |
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1952 // register iv_be_count! |
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1953 BLOCK_COMMENT("} Increment profiling counters"); |
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1954 } |
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1955 |
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1956 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { |
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1957 if (state == atos) { MacroAssembler::verify_oop(reg); } |
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1958 } |
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1959 |
| 17804 | 1960 #ifndef CC_INTERP |
| 1961 // Local helper function for the verify_oop_or_return_address macro. | |
| 1962 static bool verify_return_address(Method* m, int bci) { | |
| 1963 #ifndef PRODUCT | |
| 1964 address pc = (address)(m->constMethod()) + in_bytes(ConstMethod::codes_offset()) + bci; | |
| 1965 // Assume it is a valid return address if it is inside m and is preceded by a jsr. | |
| 1966 if (!m->contains(pc)) return false; | |
| 1967 address jsr_pc; | |
| 1968 jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr); | |
| 1969 if (*jsr_pc == Bytecodes::_jsr && jsr_pc >= m->code_base()) return true; | |
| 1970 jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr_w); | |
| 1971 if (*jsr_pc == Bytecodes::_jsr_w && jsr_pc >= m->code_base()) return true; | |
| 1972 #endif // PRODUCT | |
| 1973 return false; | |
| 1974 } | |
| 1975 | |
| 1976 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
| 1977 if (VerifyFPU) { | |
| 1978 unimplemented("verfiyFPU"); | |
| 1979 } | |
| 1980 } | |
| 1981 | |
| 1982 void InterpreterMacroAssembler::verify_oop_or_return_address(Register reg, Register Rtmp) { | |
| 1983 if (!VerifyOops) return; | |
| 1984 | |
| 1985 // The VM documentation for the astore[_wide] bytecode allows | |
| 1986 // the TOS to be not only an oop but also a return address. | |
| 1987 Label test; | |
| 1988 Label skip; | |
| 1989 // See if it is an address (in the current method): | |
| 1990 | |
| 1991 const int log2_bytecode_size_limit = 16; | |
| 1992 srdi_(Rtmp, reg, log2_bytecode_size_limit); | |
| 1993 bne(CCR0, test); | |
| 1994 | |
| 1995 address fd = CAST_FROM_FN_PTR(address, verify_return_address); | |
| 1996 unsigned int nbytes_save = 10*8; // 10 volatile gprs | |
| 1997 | |
| 1998 save_LR_CR(Rtmp); | |
| 1999 push_frame_reg_args(nbytes_save, Rtmp); | |
| 2000 save_volatile_gprs(R1_SP, 112); // except R0 | |
| 2001 | |
| 2002 load_const_optimized(Rtmp, fd, R0); | |
| 2003 mr_if_needed(R4_ARG2, reg); | |
| 2004 mr(R3_ARG1, R19_method); | |
| 2005 call_c(Rtmp); // call C | |
| 2006 | |
| 2007 restore_volatile_gprs(R1_SP, 112); // except R0 | |
| 2008 pop_frame(); | |
| 2009 restore_LR_CR(Rtmp); | |
| 2010 b(skip); | |
| 2011 | |
| 2012 // Perform a more elaborate out-of-line call. | |
| 2013 // Not an address; verify it: | |
| 2014 bind(test); | |
| 2015 verify_oop(reg); | |
| 2016 bind(skip); | |
| 2017 } | |
| 2018 #endif // !CC_INTERP | |
| 2019 | |
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2020 // Inline assembly for: |
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2021 // |
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2022 // if (thread is in interp_only_mode) { |
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2023 // InterpreterRuntime::post_method_entry(); |
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2024 // } |
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2025 // if (*jvmpi::event_flags_array_at_addr(JVMPI_EVENT_METHOD_ENTRY ) || |
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2026 // *jvmpi::event_flags_array_at_addr(JVMPI_EVENT_METHOD_ENTRY2) ) { |
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2027 // SharedRuntime::jvmpi_method_entry(method, receiver); |
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2028 // } |
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changeset
|
2029 void InterpreterMacroAssembler::notify_method_entry() { |
|
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parents:
diff
changeset
|
2030 // JVMTI |
|
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parents:
diff
changeset
|
2031 // Whenever JVMTI puts a thread in interp_only_mode, method |
|
ec28f9c041ff
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goetz
parents:
diff
changeset
|
2032 // entry/exit events are sent for that thread to track stack |
|
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parents:
diff
changeset
|
2033 // depth. If it is possible to enter interp_only_mode we add |
|
ec28f9c041ff
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parents:
diff
changeset
|
2034 // the code to check if the event should be sent. |
|
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parents:
diff
changeset
|
2035 if (JvmtiExport::can_post_interpreter_events()) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2036 Label jvmti_post_done; |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2037 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2038 lwz(R0, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); |
|
ec28f9c041ff
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parents:
diff
changeset
|
2039 cmpwi(CCR0, R0, 0); |
|
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parents:
diff
changeset
|
2040 beq(CCR0, jvmti_post_done); |
|
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parents:
diff
changeset
|
2041 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry), |
| 17804 | 2042 /*check_exceptions=*/true CC_INTERP_ONLY(&& false)); |
|
14408
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2043 |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2044 bind(jvmti_post_done); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2045 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2046 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2047 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2048 // Inline assembly for: |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2049 // |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2050 // if (thread is in interp_only_mode) { |
|
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parents:
diff
changeset
|
2051 // // save result |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2052 // InterpreterRuntime::post_method_exit(); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2053 // // restore result |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2054 // } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2055 // if (*jvmpi::event_flags_array_at_addr(JVMPI_EVENT_METHOD_EXIT)) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2056 // // save result |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2057 // SharedRuntime::jvmpi_method_exit(); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2058 // // restore result |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2059 // } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2060 // |
|
ec28f9c041ff
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parents:
diff
changeset
|
2061 // Native methods have their result stored in d_tmp and l_tmp. |
|
ec28f9c041ff
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parents:
diff
changeset
|
2062 // Java methods have their result stored in the expression stack. |
| 17804 | 2063 void InterpreterMacroAssembler::notify_method_exit(bool is_native_method, TosState state, |
| 2064 NotifyMethodExitMode mode, bool check_exceptions) { | |
|
14408
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2065 // JVMTI |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2066 // Whenever JVMTI puts a thread in interp_only_mode, method |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2067 // entry/exit events are sent for that thread to track stack |
|
ec28f9c041ff
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parents:
diff
changeset
|
2068 // depth. If it is possible to enter interp_only_mode we add |
|
ec28f9c041ff
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parents:
diff
changeset
|
2069 // the code to check if the event should be sent. |
| 17804 | 2070 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { |
|
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2071 Label jvmti_post_done; |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2072 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2073 lwz(R0, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); |
|
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parents:
diff
changeset
|
2074 cmpwi(CCR0, R0, 0); |
|
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parents:
diff
changeset
|
2075 beq(CCR0, jvmti_post_done); |
| 17804 | 2076 CC_INTERP_ONLY(assert(is_native_method && !check_exceptions, "must not push state")); |
| 2077 if (!is_native_method) push(state); // Expose tos to GC. | |
|
14408
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parents:
diff
changeset
|
2078 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit), |
| 17804 | 2079 /*check_exceptions=*/check_exceptions); |
| 2080 if (!is_native_method) pop(state); | |
|
14408
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2081 |
| 14445 | 2082 align(32, 12); |
|
14408
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parents:
diff
changeset
|
2083 bind(jvmti_post_done); |
|
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parents:
diff
changeset
|
2084 } |
| 17804 | 2085 |
| 2086 // Dtrace support not implemented. | |
|
14408
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2087 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2088 |
| 17804 | 2089 #ifdef CC_INTERP |
|
14408
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parents:
diff
changeset
|
2090 // Convert the current TOP_IJAVA_FRAME into a PARENT_IJAVA_FRAME |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2091 // (using parent_frame_resize) and push a new interpreter |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2092 // TOP_IJAVA_FRAME (using frame_size). |
|
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goetz
parents:
diff
changeset
|
2093 void InterpreterMacroAssembler::push_interpreter_frame(Register top_frame_size, Register parent_frame_resize, |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2094 Register tmp1, Register tmp2, Register tmp3, |
|
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parents:
diff
changeset
|
2095 Register tmp4, Register pc) { |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2096 assert_different_registers(top_frame_size, parent_frame_resize, tmp1, tmp2, tmp3, tmp4); |
|
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parents:
diff
changeset
|
2097 ld(tmp1, _top_ijava_frame_abi(frame_manager_lr), R1_SP); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2098 mr(tmp2/*top_frame_sp*/, R1_SP); |
|
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goetz
parents:
diff
changeset
|
2099 // Move initial_caller_sp. |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2100 ld(tmp4, _top_ijava_frame_abi(initial_caller_sp), R1_SP); |
|
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parents:
diff
changeset
|
2101 neg(parent_frame_resize, parent_frame_resize); |
|
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parents:
diff
changeset
|
2102 resize_frame(parent_frame_resize/*-parent_frame_resize*/, tmp3); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2103 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2104 // Set LR in new parent frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2105 std(tmp1, _abi(lr), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2106 // Set top_frame_sp info for new parent frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2107 std(tmp2, _parent_ijava_frame_abi(top_frame_sp), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2108 std(tmp4, _parent_ijava_frame_abi(initial_caller_sp), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2109 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2110 // Push new TOP_IJAVA_FRAME. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2111 push_frame(top_frame_size, tmp2); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2112 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2113 get_PC_trash_LR(tmp3); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2114 std(tmp3, _top_ijava_frame_abi(frame_manager_lr), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2115 // Used for non-initial callers by unextended_sp(). |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2116 std(R1_SP, _top_ijava_frame_abi(initial_caller_sp), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2117 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2118 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2119 // Pop the topmost TOP_IJAVA_FRAME and convert the previous |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2120 // PARENT_IJAVA_FRAME back into a TOP_IJAVA_FRAME. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2121 void InterpreterMacroAssembler::pop_interpreter_frame(Register tmp1, Register tmp2, Register tmp3, Register tmp4) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2122 assert_different_registers(tmp1, tmp2, tmp3, tmp4); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2123 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2124 ld(tmp1/*caller's sp*/, _abi(callers_sp), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2125 ld(tmp3, _abi(lr), tmp1); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2126 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2127 ld(tmp4, _parent_ijava_frame_abi(initial_caller_sp), tmp1); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2128 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2129 ld(tmp2/*caller's caller's sp*/, _abi(callers_sp), tmp1); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2130 // Merge top frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2131 std(tmp2, _abi(callers_sp), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2132 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2133 ld(tmp2, _parent_ijava_frame_abi(top_frame_sp), tmp1); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2134 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2135 // Update C stack pointer to caller's top_abi. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2136 resize_frame_absolute(tmp2/*addr*/, tmp1/*tmp*/, tmp2/*tmp*/); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2137 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2138 // Update LR in top_frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2139 std(tmp3, _top_ijava_frame_abi(frame_manager_lr), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2140 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2141 std(tmp4, _top_ijava_frame_abi(initial_caller_sp), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2142 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2143 // Store the top-frame stack-pointer for c2i adapters. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2144 std(R1_SP, _top_ijava_frame_abi(top_frame_sp), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2145 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2146 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2147 // Turn state's interpreter frame into the current TOP_IJAVA_FRAME. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2148 void InterpreterMacroAssembler::pop_interpreter_frame_to_state(Register state, Register tmp1, Register tmp2, Register tmp3) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2149 assert_different_registers(R14_state, R15_prev_state, tmp1, tmp2, tmp3); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2150 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2151 if (state == R14_state) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2152 ld(tmp1/*state's fp*/, state_(_last_Java_fp)); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2153 ld(tmp2/*state's sp*/, state_(_last_Java_sp)); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2154 } else if (state == R15_prev_state) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2155 ld(tmp1/*state's fp*/, prev_state_(_last_Java_fp)); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2156 ld(tmp2/*state's sp*/, prev_state_(_last_Java_sp)); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2157 } else { |
|
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2158 ShouldNotReachHere(); |
|
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2159 } |
|
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2160 |
|
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2161 // Merge top frames. |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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2162 std(tmp1, _abi(callers_sp), R1_SP); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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2163 |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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2164 // Tmp2 is new SP. |
|
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2165 // Tmp1 is parent's SP. |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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2166 resize_frame_absolute(tmp2/*addr*/, tmp1/*tmp*/, tmp2/*tmp*/); |
|
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2167 |
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2168 // Update LR in top_frame. |
|
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2169 // Must be interpreter frame. |
|
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2170 get_PC_trash_LR(tmp3); |
|
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2171 std(tmp3, _top_ijava_frame_abi(frame_manager_lr), R1_SP); |
|
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2172 // Used for non-initial callers by unextended_sp(). |
|
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2173 std(R1_SP, _top_ijava_frame_abi(initial_caller_sp), R1_SP); |
|
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|
2174 } |
|
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2175 |
|
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2176 // Set SP to initial caller's sp, but before fix the back chain. |
|
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2177 void InterpreterMacroAssembler::resize_frame_to_initial_caller(Register tmp1, Register tmp2) { |
|
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2178 ld(tmp1, _parent_ijava_frame_abi(initial_caller_sp), R1_SP); |
|
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2179 ld(tmp2, _parent_ijava_frame_abi(callers_sp), R1_SP); |
|
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2180 std(tmp2, _parent_ijava_frame_abi(callers_sp), tmp1); // Fix back chain ... |
|
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2181 mr(R1_SP, tmp1); // ... and resize to initial caller. |
|
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2182 } |
|
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2183 |
|
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|
2184 // Pop the current interpreter state (without popping the correspoding |
|
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2185 // frame) and restore R14_state and R15_prev_state accordingly. |
|
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2186 // Use prev_state_may_be_0 to indicate whether prev_state may be 0 |
|
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2187 // in order to generate an extra check before retrieving prev_state_(_prev_link). |
|
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2188 void InterpreterMacroAssembler::pop_interpreter_state(bool prev_state_may_be_0) |
|
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2189 { |
|
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2190 // Move prev_state to state and restore prev_state from state_(_prev_link). |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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|
2191 Label prev_state_is_0; |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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|
2192 mr(R14_state, R15_prev_state); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
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|
2193 |
|
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parents:
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|
2194 // Don't retrieve /*state==*/prev_state_(_prev_link) |
|
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|
2195 // if /*state==*/prev_state is 0. |
|
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diff
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|
2196 if (prev_state_may_be_0) { |
|
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parents:
diff
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|
2197 cmpdi(CCR0, R15_prev_state, 0); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
2198 beq(CCR0, prev_state_is_0); |
|
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parents:
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|
2199 } |
|
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parents:
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|
2200 |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
2201 ld(R15_prev_state, /*state==*/prev_state_(_prev_link)); |
|
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parents:
diff
changeset
|
2202 bind(prev_state_is_0); |
|
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parents:
diff
changeset
|
2203 } |
|
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parents:
diff
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|
2204 |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2205 void InterpreterMacroAssembler::restore_prev_state() { |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
2206 // _prev_link is private, but cInterpreter is a friend. |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2207 ld(R15_prev_state, state_(_prev_link)); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
2208 } |
|
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parents:
diff
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|
2209 #endif // CC_INTERP |