Mercurial > hg > truffle
annotate src/cpu/ppc/vm/interp_masm_ppc_64.cpp @ 20710:c5e86c5cd22e
8066964: ppc64: argument and return type profiling, fix problem with popframe
Reviewed-by: roland, kvn
| author | goetz |
|---|---|
| date | Fri, 12 Dec 2014 08:48:56 +0100 |
| parents | f6bde7889409 |
| children |
| 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/macroAssembler.inline.hpp" |
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29 #include "interp_masm_ppc_64.hpp" |
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30 #include "interpreter/interpreterRuntime.hpp" |
| 17804 | 31 #include "prims/jvmtiThreadState.hpp" |
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32 |
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33 #ifdef PRODUCT |
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34 #define BLOCK_COMMENT(str) // nothing |
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35 #else |
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36 #define BLOCK_COMMENT(str) block_comment(str) |
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37 #endif |
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38 |
| 14445 | 39 void InterpreterMacroAssembler::null_check_throw(Register a, int offset, Register temp_reg) { |
| 40 #ifdef CC_INTERP | |
| 41 address exception_entry = StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 42 #else | |
| 43 address exception_entry = Interpreter::throw_NullPointerException_entry(); | |
| 44 #endif | |
| 45 MacroAssembler::null_check_throw(a, offset, temp_reg, exception_entry); | |
| 46 } | |
| 47 | |
| 17804 | 48 void InterpreterMacroAssembler::branch_to_entry(address entry, Register Rscratch) { |
| 49 assert(entry, "Entry must have been generated by now"); | |
| 50 if (is_within_range_of_b(entry, pc())) { | |
| 51 b(entry); | |
| 52 } else { | |
| 53 load_const_optimized(Rscratch, entry, R0); | |
| 54 mtctr(Rscratch); | |
| 55 bctr(); | |
| 56 } | |
| 57 } | |
| 58 | |
| 59 #ifndef CC_INTERP | |
| 60 | |
| 61 void InterpreterMacroAssembler::dispatch_next(TosState state, int bcp_incr) { | |
| 62 Register bytecode = R12_scratch2; | |
| 63 if (bcp_incr != 0) { | |
| 64 lbzu(bytecode, bcp_incr, R14_bcp); | |
| 65 } else { | |
| 66 lbz(bytecode, 0, R14_bcp); | |
| 67 } | |
| 68 | |
| 69 dispatch_Lbyte_code(state, bytecode, Interpreter::dispatch_table(state)); | |
| 70 } | |
| 71 | |
| 72 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
| 73 // Load current bytecode. | |
| 74 Register bytecode = R12_scratch2; | |
| 75 lbz(bytecode, 0, R14_bcp); | |
| 76 dispatch_Lbyte_code(state, bytecode, table); | |
| 77 } | |
| 78 | |
| 79 // Dispatch code executed in the prolog of a bytecode which does not do it's | |
| 80 // own dispatch. The dispatch address is computed and placed in R24_dispatch_addr. | |
| 81 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int bcp_incr) { | |
| 82 Register bytecode = R12_scratch2; | |
| 83 lbz(bytecode, bcp_incr, R14_bcp); | |
| 84 | |
| 85 load_dispatch_table(R24_dispatch_addr, Interpreter::dispatch_table(state)); | |
| 86 | |
| 87 sldi(bytecode, bytecode, LogBytesPerWord); | |
| 88 ldx(R24_dispatch_addr, R24_dispatch_addr, bytecode); | |
| 89 } | |
| 90 | |
| 91 // Dispatch code executed in the epilog of a bytecode which does not do it's | |
| 92 // own dispatch. The dispatch address in R24_dispatch_addr is used for the | |
| 93 // dispatch. | |
| 94 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int bcp_incr) { | |
| 95 mtctr(R24_dispatch_addr); | |
| 96 addi(R14_bcp, R14_bcp, bcp_incr); | |
| 97 bctr(); | |
| 98 } | |
| 99 | |
| 100 void InterpreterMacroAssembler::check_and_handle_popframe(Register scratch_reg) { | |
| 101 assert(scratch_reg != R0, "can't use R0 as scratch_reg here"); | |
| 102 if (JvmtiExport::can_pop_frame()) { | |
| 103 Label L; | |
| 104 | |
| 105 // Check the "pending popframe condition" flag in the current thread. | |
| 106 lwz(scratch_reg, in_bytes(JavaThread::popframe_condition_offset()), R16_thread); | |
| 107 | |
| 108 // Initiate popframe handling only if it is not already being | |
| 109 // processed. If the flag has the popframe_processing bit set, it | |
| 110 // means that this code is called *during* popframe handling - we | |
| 111 // don't want to reenter. | |
| 112 andi_(R0, scratch_reg, JavaThread::popframe_pending_bit); | |
| 113 beq(CCR0, L); | |
| 114 | |
| 115 andi_(R0, scratch_reg, JavaThread::popframe_processing_bit); | |
| 116 bne(CCR0, L); | |
| 117 | |
| 118 // Call the Interpreter::remove_activation_preserving_args_entry() | |
| 119 // func to get the address of the same-named entrypoint in the | |
| 120 // generated interpreter code. | |
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121 #if defined(ABI_ELFv2) |
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122 call_c(CAST_FROM_FN_PTR(address, |
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123 Interpreter::remove_activation_preserving_args_entry), |
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124 relocInfo::none); |
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125 #else |
| 17804 | 126 call_c(CAST_FROM_FN_PTR(FunctionDescriptor*, |
| 127 Interpreter::remove_activation_preserving_args_entry), | |
| 128 relocInfo::none); | |
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129 #endif |
| 17804 | 130 |
| 131 // Jump to Interpreter::_remove_activation_preserving_args_entry. | |
| 132 mtctr(R3_RET); | |
| 133 bctr(); | |
| 134 | |
| 135 align(32, 12); | |
| 136 bind(L); | |
| 137 } | |
| 138 } | |
| 139 | |
| 140 void InterpreterMacroAssembler::check_and_handle_earlyret(Register scratch_reg) { | |
| 141 const Register Rthr_state_addr = scratch_reg; | |
| 142 if (JvmtiExport::can_force_early_return()) { | |
| 143 Label Lno_early_ret; | |
| 144 ld(Rthr_state_addr, in_bytes(JavaThread::jvmti_thread_state_offset()), R16_thread); | |
| 145 cmpdi(CCR0, Rthr_state_addr, 0); | |
| 146 beq(CCR0, Lno_early_ret); | |
| 147 | |
| 148 lwz(R0, in_bytes(JvmtiThreadState::earlyret_state_offset()), Rthr_state_addr); | |
| 149 cmpwi(CCR0, R0, JvmtiThreadState::earlyret_pending); | |
| 150 bne(CCR0, Lno_early_ret); | |
| 151 | |
| 152 // Jump to Interpreter::_earlyret_entry. | |
| 153 lwz(R3_ARG1, in_bytes(JvmtiThreadState::earlyret_tos_offset()), Rthr_state_addr); | |
| 154 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry)); | |
| 155 mtlr(R3_RET); | |
| 156 blr(); | |
| 157 | |
| 158 align(32, 12); | |
| 159 bind(Lno_early_ret); | |
| 160 } | |
| 161 } | |
| 162 | |
| 163 void InterpreterMacroAssembler::load_earlyret_value(TosState state, Register Rscratch1) { | |
| 164 const Register RjvmtiState = Rscratch1; | |
| 165 const Register Rscratch2 = R0; | |
| 166 | |
| 167 ld(RjvmtiState, in_bytes(JavaThread::jvmti_thread_state_offset()), R16_thread); | |
| 168 li(Rscratch2, 0); | |
| 169 | |
| 170 switch (state) { | |
| 171 case atos: ld(R17_tos, in_bytes(JvmtiThreadState::earlyret_oop_offset()), RjvmtiState); | |
| 172 std(Rscratch2, in_bytes(JvmtiThreadState::earlyret_oop_offset()), RjvmtiState); | |
| 173 break; | |
| 174 case ltos: ld(R17_tos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
| 175 break; | |
| 176 case btos: // fall through | |
| 177 case ctos: // fall through | |
| 178 case stos: // fall through | |
| 179 case itos: lwz(R17_tos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
| 180 break; | |
| 181 case ftos: lfs(F15_ftos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
| 182 break; | |
| 183 case dtos: lfd(F15_ftos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
| 184 break; | |
| 185 case vtos: break; | |
| 186 default : ShouldNotReachHere(); | |
| 187 } | |
| 188 | |
| 189 // Clean up tos value in the jvmti thread state. | |
| 190 std(Rscratch2, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
| 191 // Set tos state field to illegal value. | |
| 192 li(Rscratch2, ilgl); | |
| 193 stw(Rscratch2, in_bytes(JvmtiThreadState::earlyret_tos_offset()), RjvmtiState); | |
| 194 } | |
| 195 | |
| 196 // Common code to dispatch and dispatch_only. | |
| 197 // Dispatch value in Lbyte_code and increment Lbcp. | |
| 198 | |
| 199 void InterpreterMacroAssembler::load_dispatch_table(Register dst, address* table) { | |
| 200 address table_base = (address)Interpreter::dispatch_table((TosState)0); | |
| 201 intptr_t table_offs = (intptr_t)table - (intptr_t)table_base; | |
| 202 if (is_simm16(table_offs)) { | |
| 203 addi(dst, R25_templateTableBase, (int)table_offs); | |
| 204 } else { | |
| 205 load_const_optimized(dst, table, R0); | |
| 206 } | |
| 207 } | |
| 208 | |
| 209 void InterpreterMacroAssembler::dispatch_Lbyte_code(TosState state, Register bytecode, address* table, bool verify) { | |
| 210 if (verify) { | |
| 211 unimplemented("dispatch_Lbyte_code: verify"); // See Sparc Implementation to implement this | |
| 212 } | |
| 213 | |
| 214 #ifdef FAST_DISPATCH | |
| 215 unimplemented("dispatch_Lbyte_code FAST_DISPATCH"); | |
| 216 #else | |
| 217 assert_different_registers(bytecode, R11_scratch1); | |
| 218 | |
| 219 // Calc dispatch table address. | |
| 220 load_dispatch_table(R11_scratch1, table); | |
| 221 | |
| 222 sldi(R12_scratch2, bytecode, LogBytesPerWord); | |
| 223 ldx(R11_scratch1, R11_scratch1, R12_scratch2); | |
| 224 | |
| 225 // Jump off! | |
| 226 mtctr(R11_scratch1); | |
| 227 bctr(); | |
| 228 #endif | |
| 229 } | |
| 230 | |
| 231 void InterpreterMacroAssembler::load_receiver(Register Rparam_count, Register Rrecv_dst) { | |
| 232 sldi(Rrecv_dst, Rparam_count, Interpreter::logStackElementSize); | |
| 233 ldx(Rrecv_dst, Rrecv_dst, R15_esp); | |
| 234 } | |
| 235 | |
| 236 // helpers for expression stack | |
| 237 | |
| 238 void InterpreterMacroAssembler::pop_i(Register r) { | |
| 239 lwzu(r, Interpreter::stackElementSize, R15_esp); | |
| 240 } | |
| 241 | |
| 242 void InterpreterMacroAssembler::pop_ptr(Register r) { | |
| 243 ldu(r, Interpreter::stackElementSize, R15_esp); | |
| 244 } | |
| 245 | |
| 246 void InterpreterMacroAssembler::pop_l(Register r) { | |
| 247 ld(r, Interpreter::stackElementSize, R15_esp); | |
| 248 addi(R15_esp, R15_esp, 2 * Interpreter::stackElementSize); | |
| 249 } | |
| 250 | |
| 251 void InterpreterMacroAssembler::pop_f(FloatRegister f) { | |
| 252 lfsu(f, Interpreter::stackElementSize, R15_esp); | |
| 253 } | |
| 254 | |
| 255 void InterpreterMacroAssembler::pop_d(FloatRegister f) { | |
| 256 lfd(f, Interpreter::stackElementSize, R15_esp); | |
| 257 addi(R15_esp, R15_esp, 2 * Interpreter::stackElementSize); | |
| 258 } | |
| 259 | |
| 260 void InterpreterMacroAssembler::push_i(Register r) { | |
| 261 stw(r, 0, R15_esp); | |
| 262 addi(R15_esp, R15_esp, - Interpreter::stackElementSize ); | |
| 263 } | |
| 264 | |
| 265 void InterpreterMacroAssembler::push_ptr(Register r) { | |
| 266 std(r, 0, R15_esp); | |
| 267 addi(R15_esp, R15_esp, - Interpreter::stackElementSize ); | |
| 268 } | |
| 269 | |
| 270 void InterpreterMacroAssembler::push_l(Register r) { | |
| 271 std(r, - Interpreter::stackElementSize, R15_esp); | |
| 272 addi(R15_esp, R15_esp, - 2 * Interpreter::stackElementSize ); | |
| 273 } | |
| 274 | |
| 275 void InterpreterMacroAssembler::push_f(FloatRegister f) { | |
| 276 stfs(f, 0, R15_esp); | |
| 277 addi(R15_esp, R15_esp, - Interpreter::stackElementSize ); | |
| 278 } | |
| 279 | |
| 280 void InterpreterMacroAssembler::push_d(FloatRegister f) { | |
| 281 stfd(f, - Interpreter::stackElementSize, R15_esp); | |
| 282 addi(R15_esp, R15_esp, - 2 * Interpreter::stackElementSize ); | |
| 283 } | |
| 284 | |
| 285 void InterpreterMacroAssembler::push_2ptrs(Register first, Register second) { | |
| 286 std(first, 0, R15_esp); | |
| 287 std(second, -Interpreter::stackElementSize, R15_esp); | |
| 288 addi(R15_esp, R15_esp, - 2 * Interpreter::stackElementSize ); | |
| 289 } | |
| 290 | |
| 291 void InterpreterMacroAssembler::push_l_pop_d(Register l, FloatRegister d) { | |
| 292 std(l, 0, R15_esp); | |
| 293 lfd(d, 0, R15_esp); | |
| 294 } | |
| 295 | |
| 296 void InterpreterMacroAssembler::push_d_pop_l(FloatRegister d, Register l) { | |
| 297 stfd(d, 0, R15_esp); | |
| 298 ld(l, 0, R15_esp); | |
| 299 } | |
| 300 | |
| 301 void InterpreterMacroAssembler::push(TosState state) { | |
| 302 switch (state) { | |
| 303 case atos: push_ptr(); break; | |
| 304 case btos: | |
| 305 case ctos: | |
| 306 case stos: | |
| 307 case itos: push_i(); break; | |
| 308 case ltos: push_l(); break; | |
| 309 case ftos: push_f(); break; | |
| 310 case dtos: push_d(); break; | |
| 311 case vtos: /* nothing to do */ break; | |
| 312 default : ShouldNotReachHere(); | |
| 313 } | |
| 314 } | |
| 315 | |
| 316 void InterpreterMacroAssembler::pop(TosState state) { | |
| 317 switch (state) { | |
| 318 case atos: pop_ptr(); break; | |
| 319 case btos: | |
| 320 case ctos: | |
| 321 case stos: | |
| 322 case itos: pop_i(); break; | |
| 323 case ltos: pop_l(); break; | |
| 324 case ftos: pop_f(); break; | |
| 325 case dtos: pop_d(); break; | |
| 326 case vtos: /* nothing to do */ break; | |
| 327 default : ShouldNotReachHere(); | |
| 328 } | |
| 329 verify_oop(R17_tos, state); | |
| 330 } | |
| 331 | |
| 332 void InterpreterMacroAssembler::empty_expression_stack() { | |
| 333 addi(R15_esp, R26_monitor, - Interpreter::stackElementSize); | |
| 334 } | |
| 335 | |
| 336 void InterpreterMacroAssembler::get_2_byte_integer_at_bcp(int bcp_offset, | |
| 337 Register Rdst, | |
| 338 signedOrNot is_signed) { | |
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339 #if defined(VM_LITTLE_ENDIAN) |
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340 if (bcp_offset) { |
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341 load_const_optimized(Rdst, bcp_offset); |
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342 lhbrx(Rdst, R14_bcp, Rdst); |
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343 } else { |
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344 lhbrx(Rdst, R14_bcp); |
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345 } |
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346 if (is_signed == Signed) { |
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347 extsh(Rdst, Rdst); |
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348 } |
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349 #else |
| 17804 | 350 // Read Java big endian format. |
| 351 if (is_signed == Signed) { | |
| 352 lha(Rdst, bcp_offset, R14_bcp); | |
| 353 } else { | |
| 354 lhz(Rdst, bcp_offset, R14_bcp); | |
| 355 } | |
| 356 #endif | |
| 357 } | |
| 358 | |
| 359 void InterpreterMacroAssembler::get_4_byte_integer_at_bcp(int bcp_offset, | |
| 360 Register Rdst, | |
| 361 signedOrNot is_signed) { | |
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362 #if defined(VM_LITTLE_ENDIAN) |
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363 if (bcp_offset) { |
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364 load_const_optimized(Rdst, bcp_offset); |
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365 lwbrx(Rdst, R14_bcp, Rdst); |
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366 } else { |
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367 lwbrx(Rdst, R14_bcp); |
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368 } |
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369 if (is_signed == Signed) { |
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370 extsw(Rdst, Rdst); |
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371 } |
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372 #else |
| 17804 | 373 // Read Java big endian format. |
| 374 if (bcp_offset & 3) { // Offset unaligned? | |
| 375 load_const_optimized(Rdst, bcp_offset); | |
| 376 if (is_signed == Signed) { | |
| 377 lwax(Rdst, R14_bcp, Rdst); | |
| 378 } else { | |
| 379 lwzx(Rdst, R14_bcp, Rdst); | |
| 380 } | |
| 381 } else { | |
| 382 if (is_signed == Signed) { | |
| 383 lwa(Rdst, bcp_offset, R14_bcp); | |
| 384 } else { | |
| 385 lwz(Rdst, bcp_offset, R14_bcp); | |
| 386 } | |
| 387 } | |
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388 #endif |
| 17804 | 389 } |
| 390 | |
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391 |
| 17804 | 392 // Load the constant pool cache index from the bytecode stream. |
| 393 // | |
| 394 // Kills / writes: | |
| 395 // - Rdst, Rscratch | |
| 396 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register Rdst, int bcp_offset, size_t index_size) { | |
| 397 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); | |
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398 // Cache index is always in the native format, courtesy of Rewriter. |
| 17804 | 399 if (index_size == sizeof(u2)) { |
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400 lhz(Rdst, bcp_offset, R14_bcp); |
| 17804 | 401 } else if (index_size == sizeof(u4)) { |
| 402 assert(EnableInvokeDynamic, "giant index used only for JSR 292"); | |
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403 if (bcp_offset & 3) { |
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404 load_const_optimized(Rdst, bcp_offset); |
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405 lwax(Rdst, R14_bcp, Rdst); |
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406 } else { |
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407 lwa(Rdst, bcp_offset, R14_bcp); |
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408 } |
| 17804 | 409 assert(ConstantPool::decode_invokedynamic_index(~123) == 123, "else change next line"); |
| 410 nand(Rdst, Rdst, Rdst); // convert to plain index | |
| 411 } else if (index_size == sizeof(u1)) { | |
| 412 lbz(Rdst, bcp_offset, R14_bcp); | |
| 413 } else { | |
| 414 ShouldNotReachHere(); | |
| 415 } | |
| 416 // Rdst now contains cp cache index. | |
| 417 } | |
| 418 | |
| 419 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, int bcp_offset, size_t index_size) { | |
| 420 get_cache_index_at_bcp(cache, bcp_offset, index_size); | |
| 421 sldi(cache, cache, exact_log2(in_words(ConstantPoolCacheEntry::size()) * BytesPerWord)); | |
| 422 add(cache, R27_constPoolCache, cache); | |
| 423 } | |
| 424 | |
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425 // Load 4-byte signed or unsigned integer in Java format (that is, big-endian format) |
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426 // from (Rsrc)+offset. |
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427 void InterpreterMacroAssembler::get_u4(Register Rdst, Register Rsrc, int offset, |
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428 signedOrNot is_signed) { |
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429 #if defined(VM_LITTLE_ENDIAN) |
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430 if (offset) { |
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431 load_const_optimized(Rdst, offset); |
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432 lwbrx(Rdst, Rdst, Rsrc); |
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433 } else { |
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434 lwbrx(Rdst, Rsrc); |
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435 } |
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436 if (is_signed == Signed) { |
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437 extsw(Rdst, Rdst); |
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438 } |
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439 #else |
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440 if (is_signed == Signed) { |
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441 lwa(Rdst, offset, Rsrc); |
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442 } else { |
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443 lwz(Rdst, offset, Rsrc); |
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444 } |
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445 #endif |
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446 } |
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447 |
| 17804 | 448 // Load object from cpool->resolved_references(index). |
| 449 void InterpreterMacroAssembler::load_resolved_reference_at_index(Register result, Register index) { | |
| 450 assert_different_registers(result, index); | |
| 451 get_constant_pool(result); | |
| 452 | |
| 453 // Convert from field index to resolved_references() index and from | |
| 454 // word index to byte offset. Since this is a java object, it can be compressed. | |
| 455 Register tmp = index; // reuse | |
| 456 sldi(tmp, index, LogBytesPerHeapOop); | |
| 457 // Load pointer for resolved_references[] objArray. | |
| 458 ld(result, ConstantPool::resolved_references_offset_in_bytes(), result); | |
| 459 // JNIHandles::resolve(result) | |
| 460 ld(result, 0, result); | |
| 461 #ifdef ASSERT | |
| 462 Label index_ok; | |
| 463 lwa(R0, arrayOopDesc::length_offset_in_bytes(), result); | |
| 464 sldi(R0, R0, LogBytesPerHeapOop); | |
| 465 cmpd(CCR0, tmp, R0); | |
| 466 blt(CCR0, index_ok); | |
| 467 stop("resolved reference index out of bounds", 0x09256); | |
| 468 bind(index_ok); | |
| 469 #endif | |
| 470 // Add in the index. | |
| 471 add(result, tmp, result); | |
| 472 load_heap_oop(result, arrayOopDesc::base_offset_in_bytes(T_OBJECT), result); | |
| 473 } | |
| 474 | |
| 475 // Generate a subtype check: branch to ok_is_subtype if sub_klass is | |
| 476 // a subtype of super_klass. Blows registers Rsub_klass, tmp1, tmp2. | |
| 477 void InterpreterMacroAssembler::gen_subtype_check(Register Rsub_klass, Register Rsuper_klass, Register Rtmp1, | |
| 478 Register Rtmp2, Register Rtmp3, Label &ok_is_subtype) { | |
| 479 // Profile the not-null value's klass. | |
| 480 profile_typecheck(Rsub_klass, Rtmp1, Rtmp2); | |
| 481 check_klass_subtype(Rsub_klass, Rsuper_klass, Rtmp1, Rtmp2, ok_is_subtype); | |
| 482 profile_typecheck_failed(Rtmp1, Rtmp2); | |
| 483 } | |
| 484 | |
| 485 void InterpreterMacroAssembler::generate_stack_overflow_check_with_compare_and_throw(Register Rmem_frame_size, Register Rscratch1) { | |
| 486 Label done; | |
| 487 sub(Rmem_frame_size, R1_SP, Rmem_frame_size); | |
| 488 ld(Rscratch1, thread_(stack_overflow_limit)); | |
| 489 cmpld(CCR0/*is_stack_overflow*/, Rmem_frame_size, Rscratch1); | |
| 490 bgt(CCR0/*is_stack_overflow*/, done); | |
| 491 | |
| 492 // Load target address of the runtime stub. | |
| 493 assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "generated in wrong order"); | |
| 494 load_const_optimized(Rscratch1, (StubRoutines::throw_StackOverflowError_entry()), R0); | |
| 495 mtctr(Rscratch1); | |
| 496 // Restore caller_sp. | |
| 497 #ifdef ASSERT | |
| 498 ld(Rscratch1, 0, R1_SP); | |
| 499 ld(R0, 0, R21_sender_SP); | |
| 500 cmpd(CCR0, R0, Rscratch1); | |
| 501 asm_assert_eq("backlink", 0x547); | |
| 502 #endif // ASSERT | |
| 503 mr(R1_SP, R21_sender_SP); | |
| 504 bctr(); | |
| 505 | |
| 506 align(32, 12); | |
| 507 bind(done); | |
| 508 } | |
| 509 | |
| 510 // Separate these two to allow for delay slot in middle. | |
| 511 // These are used to do a test and full jump to exception-throwing code. | |
| 512 | |
| 513 // Check that index is in range for array, then shift index by index_shift, | |
| 514 // and put arrayOop + shifted_index into res. | |
| 515 // Note: res is still shy of address by array offset into object. | |
| 516 | |
| 517 void InterpreterMacroAssembler::index_check_without_pop(Register Rarray, Register Rindex, int index_shift, Register Rtmp, Register Rres) { | |
| 518 // Check that index is in range for array, then shift index by index_shift, | |
| 519 // and put arrayOop + shifted_index into res. | |
| 520 // Note: res is still shy of address by array offset into object. | |
| 521 // Kills: | |
| 522 // - Rindex | |
| 523 // Writes: | |
| 524 // - Rres: Address that corresponds to the array index if check was successful. | |
| 525 verify_oop(Rarray); | |
| 526 const Register Rlength = R0; | |
| 527 const Register RsxtIndex = Rtmp; | |
| 528 Label LisNull, LnotOOR; | |
| 529 | |
| 530 // Array nullcheck | |
| 531 if (!ImplicitNullChecks) { | |
| 532 cmpdi(CCR0, Rarray, 0); | |
| 533 beq(CCR0, LisNull); | |
| 534 } else { | |
| 535 null_check_throw(Rarray, arrayOopDesc::length_offset_in_bytes(), /*temp*/RsxtIndex); | |
| 536 } | |
| 537 | |
| 538 // Rindex might contain garbage in upper bits (remember that we don't sign extend | |
| 539 // during integer arithmetic operations). So kill them and put value into same register | |
| 540 // where ArrayIndexOutOfBounds would expect the index in. | |
| 541 rldicl(RsxtIndex, Rindex, 0, 32); // zero extend 32 bit -> 64 bit | |
| 542 | |
| 543 // Index check | |
| 544 lwz(Rlength, arrayOopDesc::length_offset_in_bytes(), Rarray); | |
| 545 cmplw(CCR0, Rindex, Rlength); | |
| 546 sldi(RsxtIndex, RsxtIndex, index_shift); | |
| 547 blt(CCR0, LnotOOR); | |
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548 // Index should be in R17_tos, array should be in R4_ARG2. |
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549 mr(R17_tos, Rindex); |
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550 mr(R4_ARG2, Rarray); |
| 17804 | 551 load_dispatch_table(Rtmp, (address*)Interpreter::_throw_ArrayIndexOutOfBoundsException_entry); |
| 552 mtctr(Rtmp); | |
| 553 bctr(); | |
| 554 | |
| 555 if (!ImplicitNullChecks) { | |
| 556 bind(LisNull); | |
| 557 load_dispatch_table(Rtmp, (address*)Interpreter::_throw_NullPointerException_entry); | |
| 558 mtctr(Rtmp); | |
| 559 bctr(); | |
| 560 } | |
| 561 | |
| 562 align(32, 16); | |
| 563 bind(LnotOOR); | |
| 564 | |
| 565 // Calc address | |
| 566 add(Rres, RsxtIndex, Rarray); | |
| 567 } | |
| 568 | |
| 569 void InterpreterMacroAssembler::index_check(Register array, Register index, int index_shift, Register tmp, Register res) { | |
| 570 // pop array | |
| 571 pop_ptr(array); | |
| 572 | |
| 573 // check array | |
| 574 index_check_without_pop(array, index, index_shift, tmp, res); | |
| 575 } | |
| 576 | |
| 577 void InterpreterMacroAssembler::get_const(Register Rdst) { | |
| 578 ld(Rdst, in_bytes(Method::const_offset()), R19_method); | |
| 579 } | |
| 580 | |
| 581 void InterpreterMacroAssembler::get_constant_pool(Register Rdst) { | |
| 582 get_const(Rdst); | |
| 583 ld(Rdst, in_bytes(ConstMethod::constants_offset()), Rdst); | |
| 584 } | |
| 585 | |
| 586 void InterpreterMacroAssembler::get_constant_pool_cache(Register Rdst) { | |
| 587 get_constant_pool(Rdst); | |
| 588 ld(Rdst, ConstantPool::cache_offset_in_bytes(), Rdst); | |
| 589 } | |
| 590 | |
| 591 void InterpreterMacroAssembler::get_cpool_and_tags(Register Rcpool, Register Rtags) { | |
| 592 get_constant_pool(Rcpool); | |
| 593 ld(Rtags, ConstantPool::tags_offset_in_bytes(), Rcpool); | |
| 594 } | |
| 595 | |
| 596 // Unlock if synchronized method. | |
| 597 // | |
| 598 // Unlock the receiver if this is a synchronized method. | |
| 599 // Unlock any Java monitors from synchronized blocks. | |
| 600 // | |
| 601 // If there are locked Java monitors | |
| 602 // If throw_monitor_exception | |
| 603 // throws IllegalMonitorStateException | |
| 604 // Else if install_monitor_exception | |
| 605 // installs IllegalMonitorStateException | |
| 606 // Else | |
| 607 // no error processing | |
| 608 void InterpreterMacroAssembler::unlock_if_synchronized_method(TosState state, | |
| 609 bool throw_monitor_exception, | |
| 610 bool install_monitor_exception) { | |
| 611 Label Lunlocked, Lno_unlock; | |
| 612 { | |
| 613 Register Rdo_not_unlock_flag = R11_scratch1; | |
| 614 Register Raccess_flags = R12_scratch2; | |
| 615 | |
| 616 // Check if synchronized method or unlocking prevented by | |
| 617 // JavaThread::do_not_unlock_if_synchronized flag. | |
| 618 lbz(Rdo_not_unlock_flag, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread); | |
| 619 lwz(Raccess_flags, in_bytes(Method::access_flags_offset()), R19_method); | |
| 620 li(R0, 0); | |
| 621 stb(R0, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread); // reset flag | |
| 622 | |
| 623 push(state); | |
| 624 | |
| 625 // Skip if we don't have to unlock. | |
| 626 rldicl_(R0, Raccess_flags, 64-JVM_ACC_SYNCHRONIZED_BIT, 63); // Extract bit and compare to 0. | |
| 627 beq(CCR0, Lunlocked); | |
| 628 | |
| 629 cmpwi(CCR0, Rdo_not_unlock_flag, 0); | |
| 630 bne(CCR0, Lno_unlock); | |
| 631 } | |
| 632 | |
| 633 // Unlock | |
| 634 { | |
| 635 Register Rmonitor_base = R11_scratch1; | |
| 636 | |
| 637 Label Lunlock; | |
| 638 // If it's still locked, everything is ok, unlock it. | |
| 639 ld(Rmonitor_base, 0, R1_SP); | |
| 640 addi(Rmonitor_base, Rmonitor_base, - (frame::ijava_state_size + frame::interpreter_frame_monitor_size_in_bytes())); // Monitor base | |
| 641 | |
| 642 ld(R0, BasicObjectLock::obj_offset_in_bytes(), Rmonitor_base); | |
| 643 cmpdi(CCR0, R0, 0); | |
| 644 bne(CCR0, Lunlock); | |
| 645 | |
| 646 // If it's already unlocked, throw exception. | |
| 647 if (throw_monitor_exception) { | |
| 648 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 649 should_not_reach_here(); | |
| 650 } else { | |
| 651 if (install_monitor_exception) { | |
| 652 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 653 b(Lunlocked); | |
| 654 } | |
| 655 } | |
| 656 | |
| 657 bind(Lunlock); | |
| 658 unlock_object(Rmonitor_base); | |
| 659 } | |
| 660 | |
| 661 // Check that all other monitors are unlocked. Throw IllegelMonitorState exception if not. | |
| 662 bind(Lunlocked); | |
| 663 { | |
| 664 Label Lexception, Lrestart; | |
| 665 Register Rcurrent_obj_addr = R11_scratch1; | |
| 666 const int delta = frame::interpreter_frame_monitor_size_in_bytes(); | |
| 667 assert((delta & LongAlignmentMask) == 0, "sizeof BasicObjectLock must be even number of doublewords"); | |
| 668 | |
| 669 bind(Lrestart); | |
| 670 // Set up search loop: Calc num of iterations. | |
| 671 { | |
| 672 Register Riterations = R12_scratch2; | |
| 673 Register Rmonitor_base = Rcurrent_obj_addr; | |
| 674 ld(Rmonitor_base, 0, R1_SP); | |
| 675 addi(Rmonitor_base, Rmonitor_base, - frame::ijava_state_size); // Monitor base | |
| 676 | |
| 677 subf_(Riterations, R26_monitor, Rmonitor_base); | |
| 678 ble(CCR0, Lno_unlock); | |
| 679 | |
| 680 addi(Rcurrent_obj_addr, Rmonitor_base, BasicObjectLock::obj_offset_in_bytes() - frame::interpreter_frame_monitor_size_in_bytes()); | |
| 681 // Check if any monitor is on stack, bail out if not | |
| 682 srdi(Riterations, Riterations, exact_log2(delta)); | |
| 683 mtctr(Riterations); | |
| 684 } | |
| 685 | |
| 686 // The search loop: Look for locked monitors. | |
| 687 { | |
| 688 const Register Rcurrent_obj = R0; | |
| 689 Label Lloop; | |
| 690 | |
| 691 ld(Rcurrent_obj, 0, Rcurrent_obj_addr); | |
| 692 addi(Rcurrent_obj_addr, Rcurrent_obj_addr, -delta); | |
| 693 bind(Lloop); | |
| 694 | |
| 695 // Check if current entry is used. | |
| 696 cmpdi(CCR0, Rcurrent_obj, 0); | |
| 697 bne(CCR0, Lexception); | |
| 698 // Preload next iteration's compare value. | |
| 699 ld(Rcurrent_obj, 0, Rcurrent_obj_addr); | |
| 700 addi(Rcurrent_obj_addr, Rcurrent_obj_addr, -delta); | |
| 701 bdnz(Lloop); | |
| 702 } | |
| 703 // Fell through: Everything's unlocked => finish. | |
| 704 b(Lno_unlock); | |
| 705 | |
| 706 // An object is still locked => need to throw exception. | |
| 707 bind(Lexception); | |
| 708 if (throw_monitor_exception) { | |
| 709 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 710 should_not_reach_here(); | |
| 711 } else { | |
| 712 // Stack unrolling. Unlock object and if requested, install illegal_monitor_exception. | |
| 713 // Unlock does not block, so don't have to worry about the frame. | |
| 714 Register Rmonitor_addr = R11_scratch1; | |
| 715 addi(Rmonitor_addr, Rcurrent_obj_addr, -BasicObjectLock::obj_offset_in_bytes() + delta); | |
| 716 unlock_object(Rmonitor_addr); | |
| 717 if (install_monitor_exception) { | |
| 718 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 719 } | |
| 720 b(Lrestart); | |
| 721 } | |
| 722 } | |
| 723 | |
| 724 align(32, 12); | |
| 725 bind(Lno_unlock); | |
| 726 pop(state); | |
| 727 } | |
| 728 | |
| 729 // Support function for remove_activation & Co. | |
| 730 void InterpreterMacroAssembler::merge_frames(Register Rsender_sp, Register return_pc, Register Rscratch1, Register Rscratch2) { | |
| 731 // Pop interpreter frame. | |
| 732 ld(Rscratch1, 0, R1_SP); // *SP | |
| 733 ld(Rsender_sp, _ijava_state_neg(sender_sp), Rscratch1); // top_frame_sp | |
| 734 ld(Rscratch2, 0, Rscratch1); // **SP | |
| 735 #ifdef ASSERT | |
| 736 { | |
| 737 Label Lok; | |
| 738 ld(R0, _ijava_state_neg(ijava_reserved), Rscratch1); | |
| 739 cmpdi(CCR0, R0, 0x5afe); | |
| 740 beq(CCR0, Lok); | |
| 741 stop("frame corrupted (remove activation)", 0x5afe); | |
| 742 bind(Lok); | |
| 743 } | |
| 744 #endif | |
| 745 if (return_pc!=noreg) { | |
| 746 ld(return_pc, _abi(lr), Rscratch1); // LR | |
| 747 } | |
| 748 | |
| 749 // Merge top frames. | |
| 750 subf(Rscratch1, R1_SP, Rsender_sp); // top_frame_sp - SP | |
| 751 stdux(Rscratch2, R1_SP, Rscratch1); // atomically set *(SP = top_frame_sp) = **SP | |
| 752 } | |
| 753 | |
| 754 // Remove activation. | |
| 755 // | |
| 756 // Unlock the receiver if this is a synchronized method. | |
| 757 // Unlock any Java monitors from synchronized blocks. | |
| 758 // Remove the activation from the stack. | |
| 759 // | |
| 760 // If there are locked Java monitors | |
| 761 // If throw_monitor_exception | |
| 762 // throws IllegalMonitorStateException | |
| 763 // Else if install_monitor_exception | |
| 764 // installs IllegalMonitorStateException | |
| 765 // Else | |
| 766 // no error processing | |
| 767 void InterpreterMacroAssembler::remove_activation(TosState state, | |
| 768 bool throw_monitor_exception, | |
| 769 bool install_monitor_exception) { | |
| 770 unlock_if_synchronized_method(state, throw_monitor_exception, install_monitor_exception); | |
| 771 | |
| 772 // Save result (push state before jvmti call and pop it afterwards) and notify jvmti. | |
| 773 notify_method_exit(false, state, NotifyJVMTI, true); | |
| 774 | |
| 775 verify_oop(R17_tos, state); | |
| 776 verify_thread(); | |
| 777 | |
| 778 merge_frames(/*top_frame_sp*/ R21_sender_SP, /*return_pc*/ R0, R11_scratch1, R12_scratch2); | |
| 779 mtlr(R0); | |
| 780 } | |
| 781 | |
| 782 #endif // !CC_INTERP | |
| 783 | |
|
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784 // Lock object |
|
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785 // |
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786 // Registers alive |
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787 // monitor - Address of the BasicObjectLock to be used for locking, |
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788 // which must be initialized with the object to lock. |
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789 // object - Address of the object to be locked. |
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790 // |
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791 void InterpreterMacroAssembler::lock_object(Register monitor, Register object) { |
|
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792 if (UseHeavyMonitors) { |
|
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793 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), |
| 14445 | 794 monitor, /*check_for_exceptions=*/true CC_INTERP_ONLY(&& false)); |
|
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795 } else { |
|
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796 // template code: |
|
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797 // |
|
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798 // markOop displaced_header = obj->mark().set_unlocked(); |
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799 // monitor->lock()->set_displaced_header(displaced_header); |
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800 // if (Atomic::cmpxchg_ptr(/*ex=*/monitor, /*addr*/obj->mark_addr(), /*cmp*/displaced_header) == displaced_header) { |
|
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801 // // We stored the monitor address into the object's mark word. |
|
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802 // } else if (THREAD->is_lock_owned((address)displaced_header)) |
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803 // // Simple recursive case. |
|
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804 // monitor->lock()->set_displaced_header(NULL); |
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805 // } else { |
|
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806 // // Slow path. |
|
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807 // InterpreterRuntime::monitorenter(THREAD, monitor); |
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808 // } |
|
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809 |
|
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810 const Register displaced_header = R7_ARG5; |
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811 const Register object_mark_addr = R8_ARG6; |
|
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812 const Register current_header = R9_ARG7; |
|
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813 const Register tmp = R10_ARG8; |
|
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814 |
|
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815 Label done; |
| 14445 | 816 Label cas_failed, slow_case; |
|
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817 |
|
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818 assert_different_registers(displaced_header, object_mark_addr, current_header, tmp); |
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819 |
|
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820 // markOop displaced_header = obj->mark().set_unlocked(); |
|
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821 |
|
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822 // Load markOop from object into displaced_header. |
|
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823 ld(displaced_header, oopDesc::mark_offset_in_bytes(), object); |
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824 |
|
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825 if (UseBiasedLocking) { |
|
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826 biased_locking_enter(CCR0, object, displaced_header, tmp, current_header, done, &slow_case); |
|
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827 } |
|
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828 |
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829 // Set displaced_header to be (markOop of object | UNLOCK_VALUE). |
|
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830 ori(displaced_header, displaced_header, markOopDesc::unlocked_value); |
|
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831 |
|
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832 // monitor->lock()->set_displaced_header(displaced_header); |
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833 |
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834 // Initialize the box (Must happen before we update the object mark!). |
|
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835 std(displaced_header, BasicObjectLock::lock_offset_in_bytes() + |
| 14445 | 836 BasicLock::displaced_header_offset_in_bytes(), monitor); |
|
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837 |
|
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838 // if (Atomic::cmpxchg_ptr(/*ex=*/monitor, /*addr*/obj->mark_addr(), /*cmp*/displaced_header) == displaced_header) { |
|
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839 |
|
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840 // Store stack address of the BasicObjectLock (this is monitor) into object. |
|
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841 addi(object_mark_addr, object, oopDesc::mark_offset_in_bytes()); |
|
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842 |
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843 // Must fence, otherwise, preceding store(s) may float below cmpxchg. |
|
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844 // CmpxchgX sets CCR0 to cmpX(current, displaced). |
|
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845 fence(); // TODO: replace by MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq ? |
|
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846 cmpxchgd(/*flag=*/CCR0, |
|
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847 /*current_value=*/current_header, |
|
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848 /*compare_value=*/displaced_header, /*exchange_value=*/monitor, |
|
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849 /*where=*/object_mark_addr, |
|
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850 MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq, |
| 14445 | 851 MacroAssembler::cmpxchgx_hint_acquire_lock(), |
| 852 noreg, | |
| 853 &cas_failed); | |
|
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854 |
|
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855 // If the compare-and-exchange succeeded, then we found an unlocked |
|
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856 // object and we have now locked it. |
| 14445 | 857 b(done); |
| 858 bind(cas_failed); | |
|
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859 |
|
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860 // } else if (THREAD->is_lock_owned((address)displaced_header)) |
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861 // // Simple recursive case. |
|
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862 // monitor->lock()->set_displaced_header(NULL); |
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863 |
|
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|
864 // We did not see an unlocked object so try the fast recursive case. |
|
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865 |
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866 // Check if owner is self by comparing the value in the markOop of object |
|
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867 // (current_header) with the stack pointer. |
|
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868 sub(current_header, current_header, R1_SP); |
|
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|
869 |
|
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|
870 assert(os::vm_page_size() > 0xfff, "page size too small - change the constant"); |
|
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871 load_const_optimized(tmp, |
|
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872 (address) (~(os::vm_page_size()-1) | |
|
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873 markOopDesc::lock_mask_in_place)); |
|
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874 |
|
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|
875 and_(R0/*==0?*/, current_header, tmp); |
|
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876 // If condition is true we are done and hence we can store 0 in the displaced |
|
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877 // header indicating it is a recursive lock. |
|
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878 bne(CCR0, slow_case); |
|
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879 release(); |
|
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880 std(R0/*==0!*/, BasicObjectLock::lock_offset_in_bytes() + |
| 14445 | 881 BasicLock::displaced_header_offset_in_bytes(), monitor); |
|
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882 b(done); |
|
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|
883 |
|
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884 // } else { |
|
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885 // // Slow path. |
|
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|
886 // InterpreterRuntime::monitorenter(THREAD, monitor); |
|
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887 |
|
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888 // None of the above fast optimizations worked so we have to get into the |
|
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889 // slow case of monitor enter. |
|
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890 bind(slow_case); |
|
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891 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), |
| 14445 | 892 monitor, /*check_for_exceptions=*/true CC_INTERP_ONLY(&& false)); |
|
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893 // } |
| 17804 | 894 align(32, 12); |
|
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895 bind(done); |
|
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896 } |
|
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897 } |
|
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898 |
|
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899 // Unlocks an object. Used in monitorexit bytecode and remove_activation. |
|
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900 // |
|
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901 // Registers alive |
|
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902 // monitor - Address of the BasicObjectLock to be used for locking, |
|
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903 // which must be initialized with the object to lock. |
|
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904 // |
|
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905 // Throw IllegalMonitorException if object is not locked by current thread. |
| 14445 | 906 void InterpreterMacroAssembler::unlock_object(Register monitor, bool check_for_exceptions) { |
|
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907 if (UseHeavyMonitors) { |
|
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908 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), |
| 17804 | 909 monitor, check_for_exceptions CC_INTERP_ONLY(&& false)); |
|
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910 } else { |
|
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911 |
|
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912 // template code: |
|
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913 // |
|
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914 // if ((displaced_header = monitor->displaced_header()) == NULL) { |
| 17804 | 915 // // Recursive unlock. Mark the monitor unlocked by setting the object field to NULL. |
|
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916 // monitor->set_obj(NULL); |
|
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917 // } else if (Atomic::cmpxchg_ptr(displaced_header, obj->mark_addr(), monitor) == monitor) { |
|
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918 // // We swapped the unlocked mark in displaced_header into the object's mark word. |
|
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919 // monitor->set_obj(NULL); |
|
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920 // } else { |
|
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921 // // Slow path. |
|
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922 // InterpreterRuntime::monitorexit(THREAD, monitor); |
|
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923 // } |
|
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924 |
|
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925 const Register object = R7_ARG5; |
|
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926 const Register displaced_header = R8_ARG6; |
|
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927 const Register object_mark_addr = R9_ARG7; |
|
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928 const Register current_header = R10_ARG8; |
|
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929 |
| 14445 | 930 Label free_slot; |
|
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931 Label slow_case; |
|
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932 |
|
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933 assert_different_registers(object, displaced_header, object_mark_addr, current_header); |
|
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934 |
|
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935 if (UseBiasedLocking) { |
|
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936 // The object address from the monitor is in object. |
|
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937 ld(object, BasicObjectLock::obj_offset_in_bytes(), monitor); |
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938 assert(oopDesc::mark_offset_in_bytes() == 0, "offset of _mark is not 0"); |
| 14445 | 939 biased_locking_exit(CCR0, object, displaced_header, free_slot); |
|
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940 } |
|
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941 |
|
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942 // Test first if we are in the fast recursive case. |
|
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943 ld(displaced_header, BasicObjectLock::lock_offset_in_bytes() + |
|
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944 BasicLock::displaced_header_offset_in_bytes(), monitor); |
|
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945 |
|
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946 // If the displaced header is zero, we have a recursive unlock. |
|
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947 cmpdi(CCR0, displaced_header, 0); |
| 14445 | 948 beq(CCR0, free_slot); // recursive unlock |
|
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949 |
|
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950 // } else if (Atomic::cmpxchg_ptr(displaced_header, obj->mark_addr(), monitor) == monitor) { |
|
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951 // // We swapped the unlocked mark in displaced_header into the object's mark word. |
|
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952 // monitor->set_obj(NULL); |
|
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953 |
|
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954 // If we still have a lightweight lock, unlock the object and be done. |
|
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955 |
|
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|
956 // The object address from the monitor is in object. |
| 17804 | 957 if (!UseBiasedLocking) { ld(object, BasicObjectLock::obj_offset_in_bytes(), monitor); } |
|
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958 addi(object_mark_addr, object, oopDesc::mark_offset_in_bytes()); |
|
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959 |
|
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960 // We have the displaced header in displaced_header. If the lock is still |
|
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961 // lightweight, it will contain the monitor address and we'll store the |
|
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962 // displaced header back into the object's mark word. |
|
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963 // CmpxchgX sets CCR0 to cmpX(current, monitor). |
|
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964 cmpxchgd(/*flag=*/CCR0, |
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965 /*current_value=*/current_header, |
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966 /*compare_value=*/monitor, /*exchange_value=*/displaced_header, |
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967 /*where=*/object_mark_addr, |
| 14445 | 968 MacroAssembler::MemBarRel, |
| 969 MacroAssembler::cmpxchgx_hint_release_lock(), | |
| 970 noreg, | |
| 971 &slow_case); | |
| 972 b(free_slot); | |
|
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973 |
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974 // } else { |
|
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975 // // Slow path. |
|
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976 // InterpreterRuntime::monitorexit(THREAD, monitor); |
|
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977 |
|
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|
978 // The lock has been converted into a heavy lock and hence |
|
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979 // we need to get into the slow case. |
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980 bind(slow_case); |
|
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|
981 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), |
| 14445 | 982 monitor, check_for_exceptions CC_INTERP_ONLY(&& false)); |
|
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983 // } |
|
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984 |
| 14445 | 985 Label done; |
| 986 b(done); // Monitor register may be overwritten! Runtime has already freed the slot. | |
| 987 | |
| 988 // Exchange worked, do monitor->set_obj(NULL); | |
| 989 align(32, 12); | |
| 990 bind(free_slot); | |
| 991 li(R0, 0); | |
| 992 std(R0, BasicObjectLock::obj_offset_in_bytes(), monitor); | |
|
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|
993 bind(done); |
|
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|
994 } |
|
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|
995 } |
|
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|
996 |
| 17804 | 997 #ifndef CC_INTERP |
| 998 | |
| 999 // Load compiled (i2c) or interpreter entry when calling from interpreted and | |
| 1000 // do the call. Centralized so that all interpreter calls will do the same actions. | |
| 1001 // If jvmti single stepping is on for a thread we must not call compiled code. | |
| 1002 // | |
| 1003 // Input: | |
| 1004 // - Rtarget_method: method to call | |
| 1005 // - Rret_addr: return address | |
| 1006 // - 2 scratch regs | |
| 1007 // | |
| 1008 void InterpreterMacroAssembler::call_from_interpreter(Register Rtarget_method, Register Rret_addr, Register Rscratch1, Register Rscratch2) { | |
| 1009 assert_different_registers(Rscratch1, Rscratch2, Rtarget_method, Rret_addr); | |
| 1010 // Assume we want to go compiled if available. | |
| 1011 const Register Rtarget_addr = Rscratch1; | |
| 1012 const Register Rinterp_only = Rscratch2; | |
| 1013 | |
| 1014 ld(Rtarget_addr, in_bytes(Method::from_interpreted_offset()), Rtarget_method); | |
| 1015 | |
| 1016 if (JvmtiExport::can_post_interpreter_events()) { | |
| 1017 lwz(Rinterp_only, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); | |
| 1018 | |
| 1019 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
| 1020 // compiled code in threads for which the event is enabled. Check here for | |
| 1021 // interp_only_mode if these events CAN be enabled. | |
| 1022 Label done; | |
| 1023 verify_thread(); | |
| 1024 cmpwi(CCR0, Rinterp_only, 0); | |
| 1025 beq(CCR0, done); | |
| 1026 ld(Rtarget_addr, in_bytes(Method::interpreter_entry_offset()), Rtarget_method); | |
| 1027 align(32, 12); | |
| 1028 bind(done); | |
| 1029 } | |
| 1030 | |
| 1031 #ifdef ASSERT | |
| 1032 { | |
| 1033 Label Lok; | |
| 1034 cmpdi(CCR0, Rtarget_addr, 0); | |
| 1035 bne(CCR0, Lok); | |
| 1036 stop("null entry point"); | |
| 1037 bind(Lok); | |
| 1038 } | |
| 1039 #endif // ASSERT | |
| 1040 | |
| 1041 mr(R21_sender_SP, R1_SP); | |
| 1042 | |
| 1043 // Calc a precise SP for the call. The SP value we calculated in | |
| 1044 // generate_fixed_frame() is based on the max_stack() value, so we would waste stack space | |
| 1045 // if esp is not max. Also, the i2c adapter extends the stack space without restoring | |
| 1046 // our pre-calced value, so repeating calls via i2c would result in stack overflow. | |
| 1047 // Since esp already points to an empty slot, we just have to sub 1 additional slot | |
| 1048 // to meet the abi scratch requirements. | |
| 1049 // The max_stack pointer will get restored by means of the GR_Lmax_stack local in | |
| 1050 // the return entry of the interpreter. | |
| 1051 addi(Rscratch2, R15_esp, Interpreter::stackElementSize - frame::abi_reg_args_size); | |
| 1052 clrrdi(Rscratch2, Rscratch2, exact_log2(frame::alignment_in_bytes)); // round towards smaller address | |
| 1053 resize_frame_absolute(Rscratch2, Rscratch2, R0); | |
| 1054 | |
| 1055 mr_if_needed(R19_method, Rtarget_method); | |
| 1056 mtctr(Rtarget_addr); | |
| 1057 mtlr(Rret_addr); | |
| 1058 | |
| 1059 save_interpreter_state(Rscratch2); | |
| 1060 #ifdef ASSERT | |
| 1061 ld(Rscratch1, _ijava_state_neg(top_frame_sp), Rscratch2); // Rscratch2 contains fp | |
| 1062 cmpd(CCR0, R21_sender_SP, Rscratch1); | |
| 1063 asm_assert_eq("top_frame_sp incorrect", 0x951); | |
| 1064 #endif | |
| 1065 | |
| 1066 bctr(); | |
| 1067 } | |
| 1068 | |
| 1069 // Set the method data pointer for the current bcp. | |
| 1070 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
| 1071 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1072 Label get_continue; | |
| 1073 ld(R28_mdx, in_bytes(Method::method_data_offset()), R19_method); | |
| 1074 test_method_data_pointer(get_continue); | |
| 1075 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), R19_method, R14_bcp); | |
| 1076 | |
| 1077 addi(R28_mdx, R28_mdx, in_bytes(MethodData::data_offset())); | |
| 1078 add(R28_mdx, R28_mdx, R3_RET); | |
| 1079 bind(get_continue); | |
| 1080 } | |
| 1081 | |
| 1082 // Test ImethodDataPtr. If it is null, continue at the specified label. | |
| 1083 void InterpreterMacroAssembler::test_method_data_pointer(Label& zero_continue) { | |
| 1084 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1085 cmpdi(CCR0, R28_mdx, 0); | |
| 1086 beq(CCR0, zero_continue); | |
| 1087 } | |
| 1088 | |
| 1089 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
| 1090 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1091 #ifdef ASSERT | |
| 1092 Label verify_continue; | |
| 1093 test_method_data_pointer(verify_continue); | |
| 1094 | |
| 1095 // If the mdp is valid, it will point to a DataLayout header which is | |
| 1096 // consistent with the bcp. The converse is highly probable also. | |
| 1097 lhz(R11_scratch1, in_bytes(DataLayout::bci_offset()), R28_mdx); | |
| 1098 ld(R12_scratch2, in_bytes(Method::const_offset()), R19_method); | |
| 1099 addi(R11_scratch1, R11_scratch1, in_bytes(ConstMethod::codes_offset())); | |
| 1100 add(R11_scratch1, R12_scratch2, R12_scratch2); | |
| 1101 cmpd(CCR0, R11_scratch1, R14_bcp); | |
| 1102 beq(CCR0, verify_continue); | |
| 1103 | |
| 1104 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp ), R19_method, R14_bcp, R28_mdx); | |
| 1105 | |
| 1106 bind(verify_continue); | |
| 1107 #endif | |
| 1108 } | |
| 1109 | |
| 1110 void InterpreterMacroAssembler::test_invocation_counter_for_mdp(Register invocation_count, | |
| 1111 Register Rscratch, | |
| 1112 Label &profile_continue) { | |
| 1113 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1114 // Control will flow to "profile_continue" if the counter is less than the | |
| 1115 // limit or if we call profile_method(). | |
| 1116 Label done; | |
| 1117 | |
| 1118 // If no method data exists, and the counter is high enough, make one. | |
| 1119 int ipl_offs = load_const_optimized(Rscratch, &InvocationCounter::InterpreterProfileLimit, R0, true); | |
| 1120 lwz(Rscratch, ipl_offs, Rscratch); | |
| 1121 | |
| 1122 cmpdi(CCR0, R28_mdx, 0); | |
| 1123 // Test to see if we should create a method data oop. | |
| 1124 cmpd(CCR1, Rscratch /* InterpreterProfileLimit */, invocation_count); | |
| 1125 bne(CCR0, done); | |
| 1126 bge(CCR1, profile_continue); | |
| 1127 | |
| 1128 // Build it now. | |
| 1129 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); | |
| 1130 set_method_data_pointer_for_bcp(); | |
| 1131 b(profile_continue); | |
| 1132 | |
| 1133 align(32, 12); | |
| 1134 bind(done); | |
| 1135 } | |
| 1136 | |
| 1137 void InterpreterMacroAssembler::test_backedge_count_for_osr(Register backedge_count, Register branch_bcp, Register Rtmp) { | |
| 1138 assert_different_registers(backedge_count, Rtmp, branch_bcp); | |
| 1139 assert(UseOnStackReplacement,"Must UseOnStackReplacement to test_backedge_count_for_osr"); | |
| 1140 | |
| 1141 Label did_not_overflow; | |
| 1142 Label overflow_with_error; | |
| 1143 | |
| 1144 int ibbl_offs = load_const_optimized(Rtmp, &InvocationCounter::InterpreterBackwardBranchLimit, R0, true); | |
| 1145 lwz(Rtmp, ibbl_offs, Rtmp); | |
| 1146 cmpw(CCR0, backedge_count, Rtmp); | |
| 1147 | |
| 1148 blt(CCR0, did_not_overflow); | |
| 1149 | |
| 1150 // When ProfileInterpreter is on, the backedge_count comes from the | |
| 1151 // methodDataOop, which value does not get reset on the call to | |
| 1152 // frequency_counter_overflow(). To avoid excessive calls to the overflow | |
| 1153 // routine while the method is being compiled, add a second test to make sure | |
| 1154 // the overflow function is called only once every overflow_frequency. | |
| 1155 if (ProfileInterpreter) { | |
| 1156 const int overflow_frequency = 1024; | |
| 1157 li(Rtmp, overflow_frequency-1); | |
| 1158 andr(Rtmp, Rtmp, backedge_count); | |
| 1159 cmpwi(CCR0, Rtmp, 0); | |
| 1160 bne(CCR0, did_not_overflow); | |
| 1161 } | |
| 1162 | |
| 1163 // Overflow in loop, pass branch bytecode. | |
| 1164 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), branch_bcp, true); | |
| 1165 | |
| 1166 // Was an OSR adapter generated? | |
| 1167 // O0 = osr nmethod | |
| 1168 cmpdi(CCR0, R3_RET, 0); | |
| 1169 beq(CCR0, overflow_with_error); | |
| 1170 | |
| 1171 // Has the nmethod been invalidated already? | |
| 1172 lwz(Rtmp, nmethod::entry_bci_offset(), R3_RET); | |
| 1173 cmpwi(CCR0, Rtmp, InvalidOSREntryBci); | |
| 1174 beq(CCR0, overflow_with_error); | |
| 1175 | |
| 1176 // Migrate the interpreter frame off of the stack. | |
| 1177 // We can use all registers because we will not return to interpreter from this point. | |
| 1178 | |
| 1179 // Save nmethod. | |
| 1180 const Register osr_nmethod = R31; | |
| 1181 mr(osr_nmethod, R3_RET); | |
| 1182 set_top_ijava_frame_at_SP_as_last_Java_frame(R1_SP, R11_scratch1); | |
| 1183 call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin), R16_thread); | |
| 1184 reset_last_Java_frame(); | |
| 1185 // OSR buffer is in ARG1 | |
| 1186 | |
| 1187 // Remove the interpreter frame. | |
| 1188 merge_frames(/*top_frame_sp*/ R21_sender_SP, /*return_pc*/ R0, R11_scratch1, R12_scratch2); | |
| 1189 | |
| 1190 // Jump to the osr code. | |
| 1191 ld(R11_scratch1, nmethod::osr_entry_point_offset(), osr_nmethod); | |
| 1192 mtlr(R0); | |
| 1193 mtctr(R11_scratch1); | |
| 1194 bctr(); | |
| 1195 | |
| 1196 align(32, 12); | |
| 1197 bind(overflow_with_error); | |
| 1198 bind(did_not_overflow); | |
| 1199 } | |
| 1200 | |
| 1201 // Store a value at some constant offset from the method data pointer. | |
| 1202 void InterpreterMacroAssembler::set_mdp_data_at(int constant, Register value) { | |
| 1203 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1204 | |
| 1205 std(value, constant, R28_mdx); | |
| 1206 } | |
| 1207 | |
| 1208 // Increment the value at some constant offset from the method data pointer. | |
| 1209 void InterpreterMacroAssembler::increment_mdp_data_at(int constant, | |
| 1210 Register counter_addr, | |
| 1211 Register Rbumped_count, | |
| 1212 bool decrement) { | |
| 1213 // Locate the counter at a fixed offset from the mdp: | |
| 1214 addi(counter_addr, R28_mdx, constant); | |
| 1215 increment_mdp_data_at(counter_addr, Rbumped_count, decrement); | |
| 1216 } | |
| 1217 | |
| 1218 // Increment the value at some non-fixed (reg + constant) offset from | |
| 1219 // the method data pointer. | |
| 1220 void InterpreterMacroAssembler::increment_mdp_data_at(Register reg, | |
| 1221 int constant, | |
| 1222 Register scratch, | |
| 1223 Register Rbumped_count, | |
| 1224 bool decrement) { | |
| 1225 // Add the constant to reg to get the offset. | |
| 1226 add(scratch, R28_mdx, reg); | |
| 1227 // Then calculate the counter address. | |
| 1228 addi(scratch, scratch, constant); | |
| 1229 increment_mdp_data_at(scratch, Rbumped_count, decrement); | |
| 1230 } | |
| 1231 | |
| 1232 void InterpreterMacroAssembler::increment_mdp_data_at(Register counter_addr, | |
| 1233 Register Rbumped_count, | |
| 1234 bool decrement) { | |
| 1235 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1236 | |
| 1237 // Load the counter. | |
| 1238 ld(Rbumped_count, 0, counter_addr); | |
| 1239 | |
| 1240 if (decrement) { | |
| 1241 // Decrement the register. Set condition codes. | |
| 1242 addi(Rbumped_count, Rbumped_count, - DataLayout::counter_increment); | |
| 1243 // Store the decremented counter, if it is still negative. | |
| 1244 std(Rbumped_count, 0, counter_addr); | |
| 1245 // Note: add/sub overflow check are not ported, since 64 bit | |
| 1246 // calculation should never overflow. | |
| 1247 } else { | |
| 1248 // Increment the register. Set carry flag. | |
| 1249 addi(Rbumped_count, Rbumped_count, DataLayout::counter_increment); | |
| 1250 // Store the incremented counter. | |
| 1251 std(Rbumped_count, 0, counter_addr); | |
| 1252 } | |
| 1253 } | |
| 1254 | |
| 1255 // Set a flag value at the current method data pointer position. | |
| 1256 void InterpreterMacroAssembler::set_mdp_flag_at(int flag_constant, | |
| 1257 Register scratch) { | |
| 1258 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1259 // Load the data header. | |
| 1260 lbz(scratch, in_bytes(DataLayout::flags_offset()), R28_mdx); | |
| 1261 // Set the flag. | |
| 1262 ori(scratch, scratch, flag_constant); | |
| 1263 // Store the modified header. | |
| 1264 stb(scratch, in_bytes(DataLayout::flags_offset()), R28_mdx); | |
| 1265 } | |
| 1266 | |
| 1267 // Test the location at some offset from the method data pointer. | |
| 1268 // If it is not equal to value, branch to the not_equal_continue Label. | |
| 1269 void InterpreterMacroAssembler::test_mdp_data_at(int offset, | |
| 1270 Register value, | |
| 1271 Label& not_equal_continue, | |
| 1272 Register test_out) { | |
| 1273 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1274 | |
| 1275 ld(test_out, offset, R28_mdx); | |
| 1276 cmpd(CCR0, value, test_out); | |
| 1277 bne(CCR0, not_equal_continue); | |
| 1278 } | |
| 1279 | |
| 1280 // Update the method data pointer by the displacement located at some fixed | |
| 1281 // offset from the method data pointer. | |
| 1282 void InterpreterMacroAssembler::update_mdp_by_offset(int offset_of_disp, | |
| 1283 Register scratch) { | |
| 1284 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1285 | |
| 1286 ld(scratch, offset_of_disp, R28_mdx); | |
| 1287 add(R28_mdx, scratch, R28_mdx); | |
| 1288 } | |
| 1289 | |
| 1290 // Update the method data pointer by the displacement located at the | |
| 1291 // offset (reg + offset_of_disp). | |
| 1292 void InterpreterMacroAssembler::update_mdp_by_offset(Register reg, | |
| 1293 int offset_of_disp, | |
| 1294 Register scratch) { | |
| 1295 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1296 | |
| 1297 add(scratch, reg, R28_mdx); | |
| 1298 ld(scratch, offset_of_disp, scratch); | |
| 1299 add(R28_mdx, scratch, R28_mdx); | |
| 1300 } | |
| 1301 | |
| 1302 // Update the method data pointer by a simple constant displacement. | |
| 1303 void InterpreterMacroAssembler::update_mdp_by_constant(int constant) { | |
| 1304 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1305 addi(R28_mdx, R28_mdx, constant); | |
| 1306 } | |
| 1307 | |
| 1308 // Update the method data pointer for a _ret bytecode whose target | |
| 1309 // was not among our cached targets. | |
| 1310 void InterpreterMacroAssembler::update_mdp_for_ret(TosState state, | |
| 1311 Register return_bci) { | |
| 1312 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1313 | |
| 1314 push(state); | |
| 1315 assert(return_bci->is_nonvolatile(), "need to protect return_bci"); | |
| 1316 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); | |
| 1317 pop(state); | |
| 1318 } | |
| 1319 | |
| 1320 // Increments the backedge counter. | |
| 1321 // Returns backedge counter + invocation counter in Rdst. | |
| 1322 void InterpreterMacroAssembler::increment_backedge_counter(const Register Rcounters, const Register Rdst, | |
| 1323 const Register Rtmp1, Register Rscratch) { | |
| 1324 assert(UseCompiler, "incrementing must be useful"); | |
| 1325 assert_different_registers(Rdst, Rtmp1); | |
| 1326 const Register invocation_counter = Rtmp1; | |
| 1327 const Register counter = Rdst; | |
| 1328 // TODO ppc port assert(4 == InvocationCounter::sz_counter(), "unexpected field size."); | |
| 1329 | |
| 1330 // Load backedge counter. | |
| 1331 lwz(counter, in_bytes(MethodCounters::backedge_counter_offset()) + | |
| 1332 in_bytes(InvocationCounter::counter_offset()), Rcounters); | |
| 1333 // Load invocation counter. | |
| 1334 lwz(invocation_counter, in_bytes(MethodCounters::invocation_counter_offset()) + | |
| 1335 in_bytes(InvocationCounter::counter_offset()), Rcounters); | |
| 1336 | |
| 1337 // Add the delta to the backedge counter. | |
| 1338 addi(counter, counter, InvocationCounter::count_increment); | |
| 1339 | |
| 1340 // Mask the invocation counter. | |
| 1341 li(Rscratch, InvocationCounter::count_mask_value); | |
| 1342 andr(invocation_counter, invocation_counter, Rscratch); | |
| 1343 | |
| 1344 // Store new counter value. | |
| 1345 stw(counter, in_bytes(MethodCounters::backedge_counter_offset()) + | |
| 1346 in_bytes(InvocationCounter::counter_offset()), Rcounters); | |
| 1347 // Return invocation counter + backedge counter. | |
| 1348 add(counter, counter, invocation_counter); | |
| 1349 } | |
| 1350 | |
| 1351 // Count a taken branch in the bytecodes. | |
| 1352 void InterpreterMacroAssembler::profile_taken_branch(Register scratch, Register bumped_count) { | |
| 1353 if (ProfileInterpreter) { | |
| 1354 Label profile_continue; | |
| 1355 | |
| 1356 // If no method data exists, go to profile_continue. | |
| 1357 test_method_data_pointer(profile_continue); | |
| 1358 | |
| 1359 // We are taking a branch. Increment the taken count. | |
| 1360 increment_mdp_data_at(in_bytes(JumpData::taken_offset()), scratch, bumped_count); | |
| 1361 | |
| 1362 // The method data pointer needs to be updated to reflect the new target. | |
| 1363 update_mdp_by_offset(in_bytes(JumpData::displacement_offset()), scratch); | |
| 1364 bind (profile_continue); | |
| 1365 } | |
| 1366 } | |
| 1367 | |
| 1368 // Count a not-taken branch in the bytecodes. | |
| 1369 void InterpreterMacroAssembler::profile_not_taken_branch(Register scratch1, Register scratch2) { | |
| 1370 if (ProfileInterpreter) { | |
| 1371 Label profile_continue; | |
| 1372 | |
| 1373 // If no method data exists, go to profile_continue. | |
| 1374 test_method_data_pointer(profile_continue); | |
| 1375 | |
| 1376 // We are taking a branch. Increment the not taken count. | |
| 1377 increment_mdp_data_at(in_bytes(BranchData::not_taken_offset()), scratch1, scratch2); | |
| 1378 | |
| 1379 // The method data pointer needs to be updated to correspond to the | |
| 1380 // next bytecode. | |
| 1381 update_mdp_by_constant(in_bytes(BranchData::branch_data_size())); | |
| 1382 bind (profile_continue); | |
| 1383 } | |
| 1384 } | |
| 1385 | |
| 1386 // Count a non-virtual call in the bytecodes. | |
| 1387 void InterpreterMacroAssembler::profile_call(Register scratch1, Register scratch2) { | |
| 1388 if (ProfileInterpreter) { | |
| 1389 Label profile_continue; | |
| 1390 | |
| 1391 // If no method data exists, go to profile_continue. | |
| 1392 test_method_data_pointer(profile_continue); | |
| 1393 | |
| 1394 // We are making a call. Increment the count. | |
| 1395 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
| 1396 | |
| 1397 // The method data pointer needs to be updated to reflect the new target. | |
| 1398 update_mdp_by_constant(in_bytes(CounterData::counter_data_size())); | |
| 1399 bind (profile_continue); | |
| 1400 } | |
| 1401 } | |
| 1402 | |
| 1403 // Count a final call in the bytecodes. | |
| 1404 void InterpreterMacroAssembler::profile_final_call(Register scratch1, Register scratch2) { | |
| 1405 if (ProfileInterpreter) { | |
| 1406 Label profile_continue; | |
| 1407 | |
| 1408 // If no method data exists, go to profile_continue. | |
| 1409 test_method_data_pointer(profile_continue); | |
| 1410 | |
| 1411 // We are making a call. Increment the count. | |
| 1412 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
| 1413 | |
| 1414 // The method data pointer needs to be updated to reflect the new target. | |
| 1415 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); | |
| 1416 bind (profile_continue); | |
| 1417 } | |
| 1418 } | |
| 1419 | |
| 1420 // Count a virtual call in the bytecodes. | |
| 1421 void InterpreterMacroAssembler::profile_virtual_call(Register Rreceiver, | |
| 1422 Register Rscratch1, | |
| 1423 Register Rscratch2, | |
| 1424 bool receiver_can_be_null) { | |
| 1425 if (!ProfileInterpreter) { return; } | |
| 1426 Label profile_continue; | |
| 1427 | |
| 1428 // If no method data exists, go to profile_continue. | |
| 1429 test_method_data_pointer(profile_continue); | |
| 1430 | |
| 1431 Label skip_receiver_profile; | |
| 1432 if (receiver_can_be_null) { | |
| 1433 Label not_null; | |
| 1434 cmpdi(CCR0, Rreceiver, 0); | |
| 1435 bne(CCR0, not_null); | |
| 1436 // We are making a call. Increment the count for null receiver. | |
| 1437 increment_mdp_data_at(in_bytes(CounterData::count_offset()), Rscratch1, Rscratch2); | |
| 1438 b(skip_receiver_profile); | |
| 1439 bind(not_null); | |
| 1440 } | |
| 1441 | |
| 1442 // Record the receiver type. | |
| 1443 record_klass_in_profile(Rreceiver, Rscratch1, Rscratch2, true); | |
| 1444 bind(skip_receiver_profile); | |
| 1445 | |
| 1446 // The method data pointer needs to be updated to reflect the new target. | |
| 1447 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); | |
| 1448 bind (profile_continue); | |
| 1449 } | |
| 1450 | |
| 1451 void InterpreterMacroAssembler::profile_typecheck(Register Rklass, Register Rscratch1, Register Rscratch2) { | |
| 1452 if (ProfileInterpreter) { | |
| 1453 Label profile_continue; | |
| 1454 | |
| 1455 // If no method data exists, go to profile_continue. | |
| 1456 test_method_data_pointer(profile_continue); | |
| 1457 | |
| 1458 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1459 if (TypeProfileCasts) { | |
| 1460 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1461 | |
| 1462 // Record the object type. | |
| 1463 record_klass_in_profile(Rklass, Rscratch1, Rscratch2, false); | |
| 1464 } | |
| 1465 | |
| 1466 // The method data pointer needs to be updated. | |
| 1467 update_mdp_by_constant(mdp_delta); | |
| 1468 | |
| 1469 bind (profile_continue); | |
| 1470 } | |
| 1471 } | |
| 1472 | |
| 1473 void InterpreterMacroAssembler::profile_typecheck_failed(Register Rscratch1, Register Rscratch2) { | |
| 1474 if (ProfileInterpreter && TypeProfileCasts) { | |
| 1475 Label profile_continue; | |
| 1476 | |
| 1477 // If no method data exists, go to profile_continue. | |
| 1478 test_method_data_pointer(profile_continue); | |
| 1479 | |
| 1480 int count_offset = in_bytes(CounterData::count_offset()); | |
| 1481 // Back up the address, since we have already bumped the mdp. | |
| 1482 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1483 | |
| 1484 // *Decrement* the counter. We expect to see zero or small negatives. | |
| 1485 increment_mdp_data_at(count_offset, Rscratch1, Rscratch2, true); | |
| 1486 | |
| 1487 bind (profile_continue); | |
| 1488 } | |
| 1489 } | |
| 1490 | |
| 1491 // Count a ret in the bytecodes. | |
| 1492 void InterpreterMacroAssembler::profile_ret(TosState state, Register return_bci, Register scratch1, Register scratch2) { | |
| 1493 if (ProfileInterpreter) { | |
| 1494 Label profile_continue; | |
| 1495 uint row; | |
| 1496 | |
| 1497 // If no method data exists, go to profile_continue. | |
| 1498 test_method_data_pointer(profile_continue); | |
| 1499 | |
| 1500 // Update the total ret count. | |
| 1501 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2 ); | |
| 1502 | |
| 1503 for (row = 0; row < RetData::row_limit(); row++) { | |
| 1504 Label next_test; | |
| 1505 | |
| 1506 // See if return_bci is equal to bci[n]: | |
| 1507 test_mdp_data_at(in_bytes(RetData::bci_offset(row)), return_bci, next_test, scratch1); | |
| 1508 | |
| 1509 // return_bci is equal to bci[n]. Increment the count. | |
| 1510 increment_mdp_data_at(in_bytes(RetData::bci_count_offset(row)), scratch1, scratch2); | |
| 1511 | |
| 1512 // The method data pointer needs to be updated to reflect the new target. | |
| 1513 update_mdp_by_offset(in_bytes(RetData::bci_displacement_offset(row)), scratch1); | |
| 1514 b(profile_continue); | |
| 1515 bind(next_test); | |
| 1516 } | |
| 1517 | |
| 1518 update_mdp_for_ret(state, return_bci); | |
| 1519 | |
| 1520 bind (profile_continue); | |
| 1521 } | |
| 1522 } | |
| 1523 | |
| 1524 // Count the default case of a switch construct. | |
| 1525 void InterpreterMacroAssembler::profile_switch_default(Register scratch1, Register scratch2) { | |
| 1526 if (ProfileInterpreter) { | |
| 1527 Label profile_continue; | |
| 1528 | |
| 1529 // If no method data exists, go to profile_continue. | |
| 1530 test_method_data_pointer(profile_continue); | |
| 1531 | |
| 1532 // Update the default case count | |
| 1533 increment_mdp_data_at(in_bytes(MultiBranchData::default_count_offset()), | |
| 1534 scratch1, scratch2); | |
| 1535 | |
| 1536 // The method data pointer needs to be updated. | |
| 1537 update_mdp_by_offset(in_bytes(MultiBranchData::default_displacement_offset()), | |
| 1538 scratch1); | |
| 1539 | |
| 1540 bind (profile_continue); | |
| 1541 } | |
| 1542 } | |
| 1543 | |
| 1544 // Count the index'th case of a switch construct. | |
| 1545 void InterpreterMacroAssembler::profile_switch_case(Register index, | |
| 1546 Register scratch1, | |
| 1547 Register scratch2, | |
| 1548 Register scratch3) { | |
| 1549 if (ProfileInterpreter) { | |
| 1550 assert_different_registers(index, scratch1, scratch2, scratch3); | |
| 1551 Label profile_continue; | |
| 1552 | |
| 1553 // If no method data exists, go to profile_continue. | |
| 1554 test_method_data_pointer(profile_continue); | |
| 1555 | |
| 1556 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes(). | |
| 1557 li(scratch3, in_bytes(MultiBranchData::case_array_offset())); | |
| 1558 | |
| 1559 assert (in_bytes(MultiBranchData::per_case_size()) == 16, "so that shladd works"); | |
| 1560 sldi(scratch1, index, exact_log2(in_bytes(MultiBranchData::per_case_size()))); | |
| 1561 add(scratch1, scratch1, scratch3); | |
| 1562 | |
| 1563 // Update the case count. | |
| 1564 increment_mdp_data_at(scratch1, in_bytes(MultiBranchData::relative_count_offset()), scratch2, scratch3); | |
| 1565 | |
| 1566 // The method data pointer needs to be updated. | |
| 1567 update_mdp_by_offset(scratch1, in_bytes(MultiBranchData::relative_displacement_offset()), scratch2); | |
| 1568 | |
| 1569 bind (profile_continue); | |
| 1570 } | |
| 1571 } | |
| 1572 | |
| 1573 void InterpreterMacroAssembler::profile_null_seen(Register Rscratch1, Register Rscratch2) { | |
| 1574 if (ProfileInterpreter) { | |
| 1575 assert_different_registers(Rscratch1, Rscratch2); | |
| 1576 Label profile_continue; | |
| 1577 | |
| 1578 // If no method data exists, go to profile_continue. | |
| 1579 test_method_data_pointer(profile_continue); | |
| 1580 | |
| 1581 set_mdp_flag_at(BitData::null_seen_byte_constant(), Rscratch1); | |
| 1582 | |
| 1583 // The method data pointer needs to be updated. | |
| 1584 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1585 if (TypeProfileCasts) { | |
| 1586 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1587 } | |
| 1588 update_mdp_by_constant(mdp_delta); | |
| 1589 | |
| 1590 bind (profile_continue); | |
| 1591 } | |
| 1592 } | |
| 1593 | |
| 1594 void InterpreterMacroAssembler::record_klass_in_profile(Register Rreceiver, | |
| 1595 Register Rscratch1, Register Rscratch2, | |
| 1596 bool is_virtual_call) { | |
| 1597 assert(ProfileInterpreter, "must be profiling"); | |
| 1598 assert_different_registers(Rreceiver, Rscratch1, Rscratch2); | |
| 1599 | |
| 1600 Label done; | |
| 1601 record_klass_in_profile_helper(Rreceiver, Rscratch1, Rscratch2, 0, done, is_virtual_call); | |
| 1602 bind (done); | |
| 1603 } | |
| 1604 | |
| 1605 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
| 1606 Register receiver, Register scratch1, Register scratch2, | |
| 1607 int start_row, Label& done, bool is_virtual_call) { | |
| 1608 if (TypeProfileWidth == 0) { | |
| 1609 if (is_virtual_call) { | |
| 1610 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
| 1611 } | |
| 1612 return; | |
| 1613 } | |
| 1614 | |
| 1615 int last_row = VirtualCallData::row_limit() - 1; | |
| 1616 assert(start_row <= last_row, "must be work left to do"); | |
| 1617 // Test this row for both the receiver and for null. | |
| 1618 // Take any of three different outcomes: | |
| 1619 // 1. found receiver => increment count and goto done | |
| 1620 // 2. found null => keep looking for case 1, maybe allocate this cell | |
| 1621 // 3. found something else => keep looking for cases 1 and 2 | |
| 1622 // Case 3 is handled by a recursive call. | |
| 1623 for (int row = start_row; row <= last_row; row++) { | |
| 1624 Label next_test; | |
| 1625 bool test_for_null_also = (row == start_row); | |
| 1626 | |
| 1627 // See if the receiver is receiver[n]. | |
| 1628 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
| 1629 test_mdp_data_at(recvr_offset, receiver, next_test, scratch1); | |
| 1630 // delayed()->tst(scratch); | |
| 1631 | |
| 1632 // The receiver is receiver[n]. Increment count[n]. | |
| 1633 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
| 1634 increment_mdp_data_at(count_offset, scratch1, scratch2); | |
| 1635 b(done); | |
| 1636 bind(next_test); | |
| 1637 | |
| 1638 if (test_for_null_also) { | |
| 1639 Label found_null; | |
| 1640 // Failed the equality check on receiver[n]... Test for null. | |
| 1641 if (start_row == last_row) { | |
| 1642 // The only thing left to do is handle the null case. | |
| 1643 if (is_virtual_call) { | |
| 1644 // Scratch1 contains test_out from test_mdp_data_at. | |
| 1645 cmpdi(CCR0, scratch1, 0); | |
| 1646 beq(CCR0, found_null); | |
| 1647 // Receiver did not match any saved receiver and there is no empty row for it. | |
| 1648 // Increment total counter to indicate polymorphic case. | |
| 1649 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
| 1650 b(done); | |
| 1651 bind(found_null); | |
| 1652 } else { | |
| 1653 cmpdi(CCR0, scratch1, 0); | |
| 1654 bne(CCR0, done); | |
| 1655 } | |
| 1656 break; | |
| 1657 } | |
| 1658 // Since null is rare, make it be the branch-taken case. | |
| 1659 cmpdi(CCR0, scratch1, 0); | |
| 1660 beq(CCR0, found_null); | |
| 1661 | |
| 1662 // Put all the "Case 3" tests here. | |
| 1663 record_klass_in_profile_helper(receiver, scratch1, scratch2, start_row + 1, done, is_virtual_call); | |
| 1664 | |
| 1665 // Found a null. Keep searching for a matching receiver, | |
| 1666 // but remember that this is an empty (unused) slot. | |
| 1667 bind(found_null); | |
| 1668 } | |
| 1669 } | |
| 1670 | |
| 1671 // In the fall-through case, we found no matching receiver, but we | |
| 1672 // observed the receiver[start_row] is NULL. | |
| 1673 | |
| 1674 // Fill in the receiver field and increment the count. | |
| 1675 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
| 1676 set_mdp_data_at(recvr_offset, receiver); | |
| 1677 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
| 1678 li(scratch1, DataLayout::counter_increment); | |
| 1679 set_mdp_data_at(count_offset, scratch1); | |
| 1680 if (start_row > 0) { | |
| 1681 b(done); | |
| 1682 } | |
| 1683 } | |
| 1684 | |
|
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1685 // Argument and return type profilig. |
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1686 // kills: tmp, tmp2, R0, CR0, CR1 |
|
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1687 void InterpreterMacroAssembler::profile_obj_type(Register obj, Register mdo_addr_base, |
|
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1688 RegisterOrConstant mdo_addr_offs, Register tmp, Register tmp2) { |
|
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|
1689 Label do_nothing, do_update; |
|
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1690 |
|
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1691 // tmp2 = obj is allowed |
|
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1692 assert_different_registers(obj, mdo_addr_base, tmp, R0); |
|
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1693 assert_different_registers(tmp2, mdo_addr_base, tmp, R0); |
|
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1694 const Register klass = tmp2; |
|
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1695 |
|
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1696 verify_oop(obj); |
|
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1697 |
|
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1698 ld(tmp, mdo_addr_offs, mdo_addr_base); |
|
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1699 |
|
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|
1700 // Set null_seen if obj is 0. |
|
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|
1701 cmpdi(CCR0, obj, 0); |
|
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|
1702 ori(R0, tmp, TypeEntries::null_seen); |
|
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|
1703 beq(CCR0, do_update); |
|
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1704 |
|
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|
1705 load_klass(klass, obj); |
|
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|
1706 |
|
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|
1707 clrrdi(R0, tmp, exact_log2(-TypeEntries::type_klass_mask)); |
|
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|
1708 // Basically same as andi(R0, tmp, TypeEntries::type_klass_mask); |
|
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|
1709 cmpd(CCR1, R0, klass); |
|
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|
1710 // Klass seen before, nothing to do (regardless of unknown bit). |
|
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|
1711 //beq(CCR1, do_nothing); |
|
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|
1712 |
|
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|
1713 andi_(R0, klass, TypeEntries::type_unknown); |
|
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1714 // Already unknown. Nothing to do anymore. |
|
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|
1715 //bne(CCR0, do_nothing); |
|
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|
1716 crorc(/*CCR0 eq*/2, /*CCR1 eq*/4+2, /*CCR0 eq*/2); // cr0 eq = cr1 eq or cr0 ne |
|
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|
1717 beq(CCR0, do_nothing); |
|
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|
1718 |
|
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|
1719 clrrdi_(R0, tmp, exact_log2(-TypeEntries::type_mask)); |
|
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|
1720 orr(R0, klass, tmp); // Combine klass and null_seen bit (only used if (tmp & type_mask)==0). |
|
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|
1721 beq(CCR0, do_update); // First time here. Set profile type. |
|
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|
1722 |
|
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1723 // Different than before. Cannot keep accurate profile. |
|
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|
1724 ori(R0, tmp, TypeEntries::type_unknown); |
|
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|
1725 |
|
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|
1726 bind(do_update); |
|
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|
1727 // update profile |
|
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|
1728 std(R0, mdo_addr_offs, mdo_addr_base); |
|
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|
1729 |
|
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|
1730 align(32, 12); |
|
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|
1731 bind(do_nothing); |
|
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|
1732 } |
|
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|
1733 |
|
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|
1734 void InterpreterMacroAssembler::profile_arguments_type(Register callee, Register tmp1, Register tmp2, bool is_virtual) { |
|
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|
1735 if (!ProfileInterpreter) { |
|
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|
1736 return; |
|
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|
1737 } |
|
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|
1738 |
|
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|
1739 assert_different_registers(callee, tmp1, tmp2, R28_mdx); |
|
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1740 |
|
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|
1741 if (MethodData::profile_arguments() || MethodData::profile_return()) { |
|
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|
1742 Label profile_continue; |
|
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|
1743 |
|
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|
1744 test_method_data_pointer(profile_continue); |
|
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1745 |
|
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1746 int off_to_start = is_virtual ? in_bytes(VirtualCallData::virtual_call_data_size()) : in_bytes(CounterData::counter_data_size()); |
|
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1747 |
|
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1748 lbz(tmp1, in_bytes(DataLayout::tag_offset()) - off_to_start, R28_mdx); |
|
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1749 cmpwi(CCR0, tmp1, is_virtual ? DataLayout::virtual_call_type_data_tag : DataLayout::call_type_data_tag); |
|
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1750 bne(CCR0, profile_continue); |
|
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1751 |
|
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|
1752 if (MethodData::profile_arguments()) { |
|
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|
1753 Label done; |
|
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|
1754 int off_to_args = in_bytes(TypeEntriesAtCall::args_data_offset()); |
|
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1755 add(R28_mdx, off_to_args, R28_mdx); |
|
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1756 |
|
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1757 for (int i = 0; i < TypeProfileArgsLimit; i++) { |
|
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|
1758 if (i > 0 || MethodData::profile_return()) { |
|
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|
1759 // If return value type is profiled we may have no argument to profile. |
|
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|
1760 ld(tmp1, in_bytes(TypeEntriesAtCall::cell_count_offset())-off_to_args, R28_mdx); |
|
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1761 cmpdi(CCR0, tmp1, (i+1)*TypeStackSlotEntries::per_arg_count()); |
|
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1762 addi(tmp1, tmp1, -i*TypeStackSlotEntries::per_arg_count()); |
|
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1763 blt(CCR0, done); |
|
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|
1764 } |
|
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|
1765 ld(tmp1, in_bytes(Method::const_offset()), callee); |
|
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1766 lhz(tmp1, in_bytes(ConstMethod::size_of_parameters_offset()), tmp1); |
|
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1767 // Stack offset o (zero based) from the start of the argument |
|
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1768 // list, for n arguments translates into offset n - o - 1 from |
|
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|
1769 // the end of the argument list. But there's an extra slot at |
|
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|
1770 // the top of the stack. So the offset is n - o from Lesp. |
|
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|
1771 ld(tmp2, in_bytes(TypeEntriesAtCall::stack_slot_offset(i))-off_to_args, R28_mdx); |
|
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|
1772 subf(tmp1, tmp2, tmp1); |
|
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|
1773 |
|
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|
1774 sldi(tmp1, tmp1, Interpreter::logStackElementSize); |
|
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|
1775 ldx(tmp1, tmp1, R15_esp); |
|
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|
1776 |
|
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|
1777 profile_obj_type(tmp1, R28_mdx, in_bytes(TypeEntriesAtCall::argument_type_offset(i))-off_to_args, tmp2, tmp1); |
|
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|
1778 |
|
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|
1779 int to_add = in_bytes(TypeStackSlotEntries::per_arg_size()); |
|
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|
1780 addi(R28_mdx, R28_mdx, to_add); |
|
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|
1781 off_to_args += to_add; |
|
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1782 } |
|
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|
1783 |
|
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|
1784 if (MethodData::profile_return()) { |
|
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|
1785 ld(tmp1, in_bytes(TypeEntriesAtCall::cell_count_offset())-off_to_args, R28_mdx); |
|
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|
1786 addi(tmp1, tmp1, -TypeProfileArgsLimit*TypeStackSlotEntries::per_arg_count()); |
|
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|
1787 } |
|
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|
1788 |
|
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|
1789 bind(done); |
|
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|
1790 |
|
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|
1791 if (MethodData::profile_return()) { |
|
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|
1792 // We're right after the type profile for the last |
|
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|
1793 // argument. tmp1 is the number of cells left in the |
|
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|
1794 // CallTypeData/VirtualCallTypeData to reach its end. Non null |
|
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|
1795 // if there's a return to profile. |
|
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|
1796 assert(ReturnTypeEntry::static_cell_count() < TypeStackSlotEntries::per_arg_count(), "can't move past ret type"); |
|
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|
1797 sldi(tmp1, tmp1, exact_log2(DataLayout::cell_size)); |
|
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|
1798 add(R28_mdx, tmp1, R28_mdx); |
|
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|
1799 } |
|
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|
1800 } else { |
|
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|
1801 assert(MethodData::profile_return(), "either profile call args or call ret"); |
|
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|
1802 update_mdp_by_constant(in_bytes(TypeEntriesAtCall::return_only_size())); |
|
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|
1803 } |
|
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|
1804 |
|
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|
1805 // Mdp points right after the end of the |
|
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|
1806 // CallTypeData/VirtualCallTypeData, right after the cells for the |
|
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|
1807 // return value type if there's one. |
|
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|
1808 align(32, 12); |
|
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|
1809 bind(profile_continue); |
|
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|
1810 } |
|
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|
1811 } |
|
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|
1812 |
|
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|
1813 void InterpreterMacroAssembler::profile_return_type(Register ret, Register tmp1, Register tmp2) { |
|
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|
1814 assert_different_registers(ret, tmp1, tmp2); |
|
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|
1815 if (ProfileInterpreter && MethodData::profile_return()) { |
|
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|
1816 Label profile_continue; |
|
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|
1817 |
|
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|
1818 test_method_data_pointer(profile_continue); |
|
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|
1819 |
|
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|
1820 if (MethodData::profile_return_jsr292_only()) { |
|
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|
1821 // If we don't profile all invoke bytecodes we must make sure |
|
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|
1822 // it's a bytecode we indeed profile. We can't go back to the |
|
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|
1823 // begining of the ProfileData we intend to update to check its |
|
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|
1824 // type because we're right after it and we don't known its |
|
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|
1825 // length. |
|
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|
1826 lbz(tmp1, 0, R14_bcp); |
|
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|
1827 lbz(tmp2, Method::intrinsic_id_offset_in_bytes(), R19_method); |
|
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|
1828 cmpwi(CCR0, tmp1, Bytecodes::_invokedynamic); |
|
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|
1829 cmpwi(CCR1, tmp1, Bytecodes::_invokehandle); |
|
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|
1830 cror(/*CR0 eq*/2, /*CR1 eq*/4+2, /*CR0 eq*/2); |
|
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|
1831 cmpwi(CCR1, tmp2, vmIntrinsics::_compiledLambdaForm); |
|
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|
1832 cror(/*CR0 eq*/2, /*CR1 eq*/4+2, /*CR0 eq*/2); |
|
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|
1833 bne(CCR0, profile_continue); |
|
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|
1834 } |
|
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|
1835 |
|
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|
1836 profile_obj_type(ret, R28_mdx, -in_bytes(ReturnTypeEntry::size()), tmp1, tmp2); |
|
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|
1837 |
|
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|
1838 align(32, 12); |
|
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|
1839 bind(profile_continue); |
|
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|
1840 } |
|
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|
1841 } |
|
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|
1842 |
|
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|
1843 void InterpreterMacroAssembler::profile_parameters_type(Register tmp1, Register tmp2, Register tmp3, Register tmp4) { |
|
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|
1844 if (ProfileInterpreter && MethodData::profile_parameters()) { |
|
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|
1845 Label profile_continue, done; |
|
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|
1846 |
|
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|
1847 test_method_data_pointer(profile_continue); |
|
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|
1848 |
|
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|
1849 // Load the offset of the area within the MDO used for |
|
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|
1850 // parameters. If it's negative we're not profiling any parameters. |
|
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|
1851 lwz(tmp1, in_bytes(MethodData::parameters_type_data_di_offset()) - in_bytes(MethodData::data_offset()), R28_mdx); |
|
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|
1852 cmpwi(CCR0, tmp1, 0); |
|
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|
1853 blt(CCR0, profile_continue); |
|
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|
1854 |
|
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|
1855 // Compute a pointer to the area for parameters from the offset |
|
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|
1856 // and move the pointer to the slot for the last |
|
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|
1857 // parameters. Collect profiling from last parameter down. |
|
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|
1858 // mdo start + parameters offset + array length - 1 |
|
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|
1859 |
|
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|
1860 // Pointer to the parameter area in the MDO. |
|
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|
1861 const Register mdp = tmp1; |
|
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|
1862 add(mdp, tmp1, R28_mdx); |
|
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|
1863 |
|
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|
1864 // Pffset of the current profile entry to update. |
|
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|
1865 const Register entry_offset = tmp2; |
|
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|
1866 // entry_offset = array len in number of cells |
|
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|
1867 ld(entry_offset, in_bytes(ArrayData::array_len_offset()), mdp); |
|
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|
1868 |
|
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|
1869 int off_base = in_bytes(ParametersTypeData::stack_slot_offset(0)); |
|
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|
1870 assert(off_base % DataLayout::cell_size == 0, "should be a number of cells"); |
|
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|
1871 |
|
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|
1872 // entry_offset (number of cells) = array len - size of 1 entry + offset of the stack slot field |
|
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|
1873 addi(entry_offset, entry_offset, -TypeStackSlotEntries::per_arg_count() + (off_base / DataLayout::cell_size)); |
|
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|
1874 // entry_offset in bytes |
|
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|
1875 sldi(entry_offset, entry_offset, exact_log2(DataLayout::cell_size)); |
|
c5e86c5cd22e
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|
1876 |
|
c5e86c5cd22e
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|
1877 Label loop; |
|
c5e86c5cd22e
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changeset
|
1878 align(32, 12); |
|
c5e86c5cd22e
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changeset
|
1879 bind(loop); |
|
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changeset
|
1880 |
|
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|
1881 // Load offset on the stack from the slot for this parameter. |
|
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1882 ld(tmp3, entry_offset, mdp); |
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1883 sldi(tmp3, tmp3, Interpreter::logStackElementSize); |
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1884 neg(tmp3, tmp3); |
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1885 // Read the parameter from the local area. |
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1886 ldx(tmp3, tmp3, R18_locals); |
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1887 |
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1888 // Make entry_offset now point to the type field for this parameter. |
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1889 int type_base = in_bytes(ParametersTypeData::type_offset(0)); |
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1890 assert(type_base > off_base, "unexpected"); |
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1891 addi(entry_offset, entry_offset, type_base - off_base); |
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1892 |
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1893 // Profile the parameter. |
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1894 profile_obj_type(tmp3, mdp, entry_offset, tmp4, tmp3); |
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1895 |
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1896 // Go to next parameter. |
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1897 int delta = TypeStackSlotEntries::per_arg_count() * DataLayout::cell_size + (type_base - off_base); |
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1898 cmpdi(CCR0, entry_offset, off_base + delta); |
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1899 addi(entry_offset, entry_offset, -delta); |
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1900 bge(CCR0, loop); |
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1901 |
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1902 align(32, 12); |
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1903 bind(profile_continue); |
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1904 } |
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1905 } |
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1906 |
| 17804 | 1907 // Add a InterpMonitorElem to stack (see frame_sparc.hpp). |
| 1908 void InterpreterMacroAssembler::add_monitor_to_stack(bool stack_is_empty, Register Rtemp1, Register Rtemp2) { | |
| 1909 | |
| 1910 // Very-local scratch registers. | |
| 1911 const Register esp = Rtemp1; | |
| 1912 const Register slot = Rtemp2; | |
| 1913 | |
| 1914 // Extracted monitor_size. | |
| 1915 int monitor_size = frame::interpreter_frame_monitor_size_in_bytes(); | |
| 1916 assert(Assembler::is_aligned((unsigned int)monitor_size, | |
| 1917 (unsigned int)frame::alignment_in_bytes), | |
| 1918 "size of a monitor must respect alignment of SP"); | |
| 1919 | |
| 1920 resize_frame(-monitor_size, /*temp*/esp); // Allocate space for new monitor | |
| 1921 std(R1_SP, _ijava_state_neg(top_frame_sp), esp); // esp contains fp | |
| 1922 | |
| 1923 // Shuffle expression stack down. Recall that stack_base points | |
| 1924 // just above the new expression stack bottom. Old_tos and new_tos | |
| 1925 // are used to scan thru the old and new expression stacks. | |
| 1926 if (!stack_is_empty) { | |
| 1927 Label copy_slot, copy_slot_finished; | |
| 1928 const Register n_slots = slot; | |
| 1929 | |
| 1930 addi(esp, R15_esp, Interpreter::stackElementSize); // Point to first element (pre-pushed stack). | |
| 1931 subf(n_slots, esp, R26_monitor); | |
| 1932 srdi_(n_slots, n_slots, LogBytesPerWord); // Compute number of slots to copy. | |
| 1933 assert(LogBytesPerWord == 3, "conflicts assembler instructions"); | |
| 1934 beq(CCR0, copy_slot_finished); // Nothing to copy. | |
| 1935 | |
| 1936 mtctr(n_slots); | |
| 1937 | |
| 1938 // loop | |
| 1939 bind(copy_slot); | |
| 1940 ld(slot, 0, esp); // Move expression stack down. | |
| 1941 std(slot, -monitor_size, esp); // distance = monitor_size | |
| 1942 addi(esp, esp, BytesPerWord); | |
| 1943 bdnz(copy_slot); | |
| 1944 | |
| 1945 bind(copy_slot_finished); | |
| 1946 } | |
| 1947 | |
| 1948 addi(R15_esp, R15_esp, -monitor_size); | |
| 1949 addi(R26_monitor, R26_monitor, -monitor_size); | |
| 1950 | |
| 1951 // Restart interpreter | |
| 1952 } | |
| 1953 | |
| 1954 // ============================================================================ | |
| 1955 // Java locals access | |
| 1956 | |
| 1957 // Load a local variable at index in Rindex into register Rdst_value. | |
| 1958 // Also puts address of local into Rdst_address as a service. | |
| 1959 // Kills: | |
| 1960 // - Rdst_value | |
| 1961 // - Rdst_address | |
| 1962 void InterpreterMacroAssembler::load_local_int(Register Rdst_value, Register Rdst_address, Register Rindex) { | |
| 1963 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 1964 subf(Rdst_address, Rdst_address, R18_locals); | |
| 1965 lwz(Rdst_value, 0, Rdst_address); | |
| 1966 } | |
| 1967 | |
| 1968 // Load a local variable at index in Rindex into register Rdst_value. | |
| 1969 // Also puts address of local into Rdst_address as a service. | |
| 1970 // Kills: | |
| 1971 // - Rdst_value | |
| 1972 // - Rdst_address | |
| 1973 void InterpreterMacroAssembler::load_local_long(Register Rdst_value, Register Rdst_address, Register Rindex) { | |
| 1974 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 1975 subf(Rdst_address, Rdst_address, R18_locals); | |
| 1976 ld(Rdst_value, -8, Rdst_address); | |
| 1977 } | |
| 1978 | |
| 1979 // Load a local variable at index in Rindex into register Rdst_value. | |
| 1980 // Also puts address of local into Rdst_address as a service. | |
| 1981 // Input: | |
| 1982 // - Rindex: slot nr of local variable | |
| 1983 // Kills: | |
| 1984 // - Rdst_value | |
| 1985 // - Rdst_address | |
| 1986 void InterpreterMacroAssembler::load_local_ptr(Register Rdst_value, Register Rdst_address, Register Rindex) { | |
| 1987 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 1988 subf(Rdst_address, Rdst_address, R18_locals); | |
| 1989 ld(Rdst_value, 0, Rdst_address); | |
| 1990 } | |
| 1991 | |
| 1992 // Load a local variable at index in Rindex into register Rdst_value. | |
| 1993 // Also puts address of local into Rdst_address as a service. | |
| 1994 // Kills: | |
| 1995 // - Rdst_value | |
| 1996 // - Rdst_address | |
| 1997 void InterpreterMacroAssembler::load_local_float(FloatRegister Rdst_value, Register Rdst_address, Register Rindex) { | |
| 1998 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 1999 subf(Rdst_address, Rdst_address, R18_locals); | |
| 2000 lfs(Rdst_value, 0, Rdst_address); | |
| 2001 } | |
| 2002 | |
| 2003 // Load a local variable at index in Rindex into register Rdst_value. | |
| 2004 // Also puts address of local into Rdst_address as a service. | |
| 2005 // Kills: | |
| 2006 // - Rdst_value | |
| 2007 // - Rdst_address | |
| 2008 void InterpreterMacroAssembler::load_local_double(FloatRegister Rdst_value, Register Rdst_address, Register Rindex) { | |
| 2009 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 2010 subf(Rdst_address, Rdst_address, R18_locals); | |
| 2011 lfd(Rdst_value, -8, Rdst_address); | |
| 2012 } | |
| 2013 | |
| 2014 // Store an int value at local variable slot Rindex. | |
| 2015 // Kills: | |
| 2016 // - Rindex | |
| 2017 void InterpreterMacroAssembler::store_local_int(Register Rvalue, Register Rindex) { | |
| 2018 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 2019 subf(Rindex, Rindex, R18_locals); | |
| 2020 stw(Rvalue, 0, Rindex); | |
| 2021 } | |
| 2022 | |
| 2023 // Store a long value at local variable slot Rindex. | |
| 2024 // Kills: | |
| 2025 // - Rindex | |
| 2026 void InterpreterMacroAssembler::store_local_long(Register Rvalue, Register Rindex) { | |
| 2027 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 2028 subf(Rindex, Rindex, R18_locals); | |
| 2029 std(Rvalue, -8, Rindex); | |
| 2030 } | |
| 2031 | |
| 2032 // Store an oop value at local variable slot Rindex. | |
| 2033 // Kills: | |
| 2034 // - Rindex | |
| 2035 void InterpreterMacroAssembler::store_local_ptr(Register Rvalue, Register Rindex) { | |
| 2036 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 2037 subf(Rindex, Rindex, R18_locals); | |
| 2038 std(Rvalue, 0, Rindex); | |
| 2039 } | |
| 2040 | |
| 2041 // Store an int value at local variable slot Rindex. | |
| 2042 // Kills: | |
| 2043 // - Rindex | |
| 2044 void InterpreterMacroAssembler::store_local_float(FloatRegister Rvalue, Register Rindex) { | |
| 2045 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 2046 subf(Rindex, Rindex, R18_locals); | |
| 2047 stfs(Rvalue, 0, Rindex); | |
| 2048 } | |
| 2049 | |
| 2050 // Store an int value at local variable slot Rindex. | |
| 2051 // Kills: | |
| 2052 // - Rindex | |
| 2053 void InterpreterMacroAssembler::store_local_double(FloatRegister Rvalue, Register Rindex) { | |
| 2054 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 2055 subf(Rindex, Rindex, R18_locals); | |
| 2056 stfd(Rvalue, -8, Rindex); | |
| 2057 } | |
| 2058 | |
| 2059 // Read pending exception from thread and jump to interpreter. | |
| 2060 // Throw exception entry if one if pending. Fall through otherwise. | |
| 2061 void InterpreterMacroAssembler::check_and_forward_exception(Register Rscratch1, Register Rscratch2) { | |
| 2062 assert_different_registers(Rscratch1, Rscratch2, R3); | |
| 2063 Register Rexception = Rscratch1; | |
| 2064 Register Rtmp = Rscratch2; | |
| 2065 Label Ldone; | |
| 2066 // Get pending exception oop. | |
| 2067 ld(Rexception, thread_(pending_exception)); | |
| 2068 cmpdi(CCR0, Rexception, 0); | |
| 2069 beq(CCR0, Ldone); | |
| 2070 li(Rtmp, 0); | |
| 2071 mr_if_needed(R3, Rexception); | |
| 2072 std(Rtmp, thread_(pending_exception)); // Clear exception in thread | |
| 2073 if (Interpreter::rethrow_exception_entry() != NULL) { | |
| 2074 // Already got entry address. | |
| 2075 load_dispatch_table(Rtmp, (address*)Interpreter::rethrow_exception_entry()); | |
| 2076 } else { | |
| 2077 // Dynamically load entry address. | |
| 2078 int simm16_rest = load_const_optimized(Rtmp, &Interpreter::_rethrow_exception_entry, R0, true); | |
| 2079 ld(Rtmp, simm16_rest, Rtmp); | |
| 2080 } | |
| 2081 mtctr(Rtmp); | |
| 2082 save_interpreter_state(Rtmp); | |
| 2083 bctr(); | |
| 2084 | |
| 2085 align(32, 12); | |
| 2086 bind(Ldone); | |
| 2087 } | |
| 2088 | |
| 2089 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, bool check_exceptions) { | |
| 2090 save_interpreter_state(R11_scratch1); | |
| 2091 | |
| 2092 MacroAssembler::call_VM(oop_result, entry_point, false); | |
| 2093 | |
| 2094 restore_interpreter_state(R11_scratch1, /*bcp_and_mdx_only*/ true); | |
| 2095 | |
| 2096 check_and_handle_popframe(R11_scratch1); | |
| 2097 check_and_handle_earlyret(R11_scratch1); | |
| 2098 // Now check exceptions manually. | |
| 2099 if (check_exceptions) { | |
| 2100 check_and_forward_exception(R11_scratch1, R12_scratch2); | |
| 2101 } | |
| 2102 } | |
| 2103 | |
| 2104 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, bool check_exceptions) { | |
| 2105 // ARG1 is reserved for the thread. | |
| 2106 mr_if_needed(R4_ARG2, arg_1); | |
| 2107 call_VM(oop_result, entry_point, check_exceptions); | |
| 2108 } | |
| 2109 | |
| 2110 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, bool check_exceptions) { | |
| 2111 // ARG1 is reserved for the thread. | |
| 2112 mr_if_needed(R4_ARG2, arg_1); | |
| 2113 assert(arg_2 != R4_ARG2, "smashed argument"); | |
| 2114 mr_if_needed(R5_ARG3, arg_2); | |
| 2115 call_VM(oop_result, entry_point, check_exceptions); | |
| 2116 } | |
| 2117 | |
| 2118 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, Register arg_3, bool check_exceptions) { | |
| 2119 // ARG1 is reserved for the thread. | |
| 2120 mr_if_needed(R4_ARG2, arg_1); | |
| 2121 assert(arg_2 != R4_ARG2, "smashed argument"); | |
| 2122 mr_if_needed(R5_ARG3, arg_2); | |
| 2123 assert(arg_3 != R4_ARG2 && arg_3 != R5_ARG3, "smashed argument"); | |
| 2124 mr_if_needed(R6_ARG4, arg_3); | |
| 2125 call_VM(oop_result, entry_point, check_exceptions); | |
| 2126 } | |
| 2127 | |
| 2128 void InterpreterMacroAssembler::save_interpreter_state(Register scratch) { | |
| 2129 ld(scratch, 0, R1_SP); | |
| 2130 std(R15_esp, _ijava_state_neg(esp), scratch); | |
| 2131 std(R14_bcp, _ijava_state_neg(bcp), scratch); | |
| 2132 std(R26_monitor, _ijava_state_neg(monitors), scratch); | |
| 2133 if (ProfileInterpreter) { std(R28_mdx, _ijava_state_neg(mdx), scratch); } | |
| 2134 // Other entries should be unchanged. | |
| 2135 } | |
| 2136 | |
| 2137 void InterpreterMacroAssembler::restore_interpreter_state(Register scratch, bool bcp_and_mdx_only) { | |
| 2138 ld(scratch, 0, R1_SP); | |
| 2139 ld(R14_bcp, _ijava_state_neg(bcp), scratch); // Changed by VM code (exception). | |
| 2140 if (ProfileInterpreter) { ld(R28_mdx, _ijava_state_neg(mdx), scratch); } // Changed by VM code. | |
| 2141 if (!bcp_and_mdx_only) { | |
| 2142 // Following ones are Metadata. | |
| 2143 ld(R19_method, _ijava_state_neg(method), scratch); | |
| 2144 ld(R27_constPoolCache, _ijava_state_neg(cpoolCache), scratch); | |
| 2145 // Following ones are stack addresses and don't require reload. | |
| 2146 ld(R15_esp, _ijava_state_neg(esp), scratch); | |
| 2147 ld(R18_locals, _ijava_state_neg(locals), scratch); | |
| 2148 ld(R26_monitor, _ijava_state_neg(monitors), scratch); | |
| 2149 } | |
| 2150 #ifdef ASSERT | |
| 2151 { | |
| 2152 Label Lok; | |
| 2153 subf(R0, R1_SP, scratch); | |
| 2154 cmpdi(CCR0, R0, frame::abi_reg_args_size + frame::ijava_state_size); | |
| 2155 bge(CCR0, Lok); | |
| 2156 stop("frame too small (restore istate)", 0x5432); | |
| 2157 bind(Lok); | |
| 2158 } | |
| 2159 { | |
| 2160 Label Lok; | |
| 2161 ld(R0, _ijava_state_neg(ijava_reserved), scratch); | |
| 2162 cmpdi(CCR0, R0, 0x5afe); | |
| 2163 beq(CCR0, Lok); | |
| 2164 stop("frame corrupted (restore istate)", 0x5afe); | |
| 2165 bind(Lok); | |
| 2166 } | |
| 2167 #endif | |
| 2168 } | |
| 2169 | |
| 2170 #endif // !CC_INTERP | |
| 2171 | |
|
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2172 void InterpreterMacroAssembler::get_method_counters(Register method, |
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2173 Register Rcounters, |
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2174 Label& skip) { |
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2175 BLOCK_COMMENT("Load and ev. allocate counter object {"); |
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2176 Label has_counters; |
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2177 ld(Rcounters, in_bytes(Method::method_counters_offset()), method); |
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2178 cmpdi(CCR0, Rcounters, 0); |
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2179 bne(CCR0, has_counters); |
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2180 call_VM(noreg, CAST_FROM_FN_PTR(address, |
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2181 InterpreterRuntime::build_method_counters), method, false); |
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2182 ld(Rcounters, in_bytes(Method::method_counters_offset()), method); |
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2183 cmpdi(CCR0, Rcounters, 0); |
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2184 beq(CCR0, skip); // No MethodCounters, OutOfMemory. |
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2185 BLOCK_COMMENT("} Load and ev. allocate counter object"); |
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2186 |
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2187 bind(has_counters); |
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2188 } |
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2189 |
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2190 void InterpreterMacroAssembler::increment_invocation_counter(Register Rcounters, Register iv_be_count, Register Rtmp_r0) { |
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2191 assert(UseCompiler, "incrementing must be useful"); |
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2192 Register invocation_count = iv_be_count; |
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2193 Register backedge_count = Rtmp_r0; |
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2194 int delta = InvocationCounter::count_increment; |
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|
2195 |
|
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parents:
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|
2196 // Load each counter in a register. |
|
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|
2197 // ld(inv_counter, Rtmp); |
|
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diff
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|
2198 // ld(be_counter, Rtmp2); |
|
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diff
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|
2199 int inv_counter_offset = in_bytes(MethodCounters::invocation_counter_offset() + |
|
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parents:
diff
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|
2200 InvocationCounter::counter_offset()); |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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diff
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|
2201 int be_counter_offset = in_bytes(MethodCounters::backedge_counter_offset() + |
|
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parents:
diff
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|
2202 InvocationCounter::counter_offset()); |
|
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parents:
diff
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|
2203 |
|
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parents:
diff
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|
2204 BLOCK_COMMENT("Increment profiling counters {"); |
|
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diff
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|
2205 |
|
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parents:
diff
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|
2206 // Load the backedge counter. |
|
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diff
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|
2207 lwz(backedge_count, be_counter_offset, Rcounters); // is unsigned int |
|
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parents:
diff
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|
2208 // Mask the backedge counter. |
|
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parents:
diff
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|
2209 Register tmp = invocation_count; |
|
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diff
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|
2210 li(tmp, InvocationCounter::count_mask_value); |
|
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parents:
diff
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|
2211 andr(backedge_count, tmp, backedge_count); // Cannot use andi, need sign extension of count_mask_value. |
|
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parents:
diff
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|
2212 |
|
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parents:
diff
changeset
|
2213 // Load the invocation counter. |
|
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diff
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|
2214 lwz(invocation_count, inv_counter_offset, Rcounters); // is unsigned int |
|
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parents:
diff
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|
2215 // Add the delta to the invocation counter and store the result. |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
2216 addi(invocation_count, invocation_count, delta); |
|
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parents:
diff
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|
2217 // Store value. |
|
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diff
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|
2218 stw(invocation_count, inv_counter_offset, Rcounters); |
|
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parents:
diff
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|
2219 |
|
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parents:
diff
changeset
|
2220 // Add invocation counter + backedge counter. |
|
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parents:
diff
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|
2221 add(iv_be_count, backedge_count, invocation_count); |
|
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parents:
diff
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|
2222 |
|
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parents:
diff
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|
2223 // Note that this macro must leave the backedge_count + invocation_count in |
|
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parents:
diff
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|
2224 // register iv_be_count! |
|
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parents:
diff
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|
2225 BLOCK_COMMENT("} Increment profiling counters"); |
|
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parents:
diff
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|
2226 } |
|
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parents:
diff
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|
2227 |
|
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diff
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|
2228 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { |
|
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|
2229 if (state == atos) { MacroAssembler::verify_oop(reg); } |
|
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parents:
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|
2230 } |
|
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|
2231 |
| 17804 | 2232 #ifndef CC_INTERP |
| 2233 // Local helper function for the verify_oop_or_return_address macro. | |
| 2234 static bool verify_return_address(Method* m, int bci) { | |
| 2235 #ifndef PRODUCT | |
| 2236 address pc = (address)(m->constMethod()) + in_bytes(ConstMethod::codes_offset()) + bci; | |
| 2237 // Assume it is a valid return address if it is inside m and is preceded by a jsr. | |
| 2238 if (!m->contains(pc)) return false; | |
| 2239 address jsr_pc; | |
| 2240 jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr); | |
| 2241 if (*jsr_pc == Bytecodes::_jsr && jsr_pc >= m->code_base()) return true; | |
| 2242 jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr_w); | |
| 2243 if (*jsr_pc == Bytecodes::_jsr_w && jsr_pc >= m->code_base()) return true; | |
| 2244 #endif // PRODUCT | |
| 2245 return false; | |
| 2246 } | |
| 2247 | |
| 2248 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
| 2249 if (VerifyFPU) { | |
| 2250 unimplemented("verfiyFPU"); | |
| 2251 } | |
| 2252 } | |
| 2253 | |
| 2254 void InterpreterMacroAssembler::verify_oop_or_return_address(Register reg, Register Rtmp) { | |
| 2255 if (!VerifyOops) return; | |
| 2256 | |
| 2257 // The VM documentation for the astore[_wide] bytecode allows | |
| 2258 // the TOS to be not only an oop but also a return address. | |
| 2259 Label test; | |
| 2260 Label skip; | |
| 2261 // See if it is an address (in the current method): | |
| 2262 | |
| 2263 const int log2_bytecode_size_limit = 16; | |
| 2264 srdi_(Rtmp, reg, log2_bytecode_size_limit); | |
| 2265 bne(CCR0, test); | |
| 2266 | |
| 2267 address fd = CAST_FROM_FN_PTR(address, verify_return_address); | |
|
20710
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20508
diff
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|
2268 const int nbytes_save = 11*8; // volatile gprs except R0 |
|
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8066964: ppc64: argument and return type profiling, fix problem with popframe
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20508
diff
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|
2269 save_volatile_gprs(R1_SP, -nbytes_save); // except R0 |
|
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diff
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|
2270 save_LR_CR(Rtmp); // Save in old frame. |
| 17804 | 2271 push_frame_reg_args(nbytes_save, Rtmp); |
| 2272 | |
| 2273 load_const_optimized(Rtmp, fd, R0); | |
| 2274 mr_if_needed(R4_ARG2, reg); | |
| 2275 mr(R3_ARG1, R19_method); | |
| 2276 call_c(Rtmp); // call C | |
| 2277 | |
| 2278 pop_frame(); | |
| 2279 restore_LR_CR(Rtmp); | |
|
20710
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|
2280 restore_volatile_gprs(R1_SP, -nbytes_save); // except R0 |
| 17804 | 2281 b(skip); |
| 2282 | |
| 2283 // Perform a more elaborate out-of-line call. | |
| 2284 // Not an address; verify it: | |
| 2285 bind(test); | |
| 2286 verify_oop(reg); | |
| 2287 bind(skip); | |
| 2288 } | |
| 2289 #endif // !CC_INTERP | |
| 2290 | |
|
14408
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|
2291 // Inline assembly for: |
|
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|
2292 // |
|
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|
2293 // if (thread is in interp_only_mode) { |
|
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|
2294 // InterpreterRuntime::post_method_entry(); |
|
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|
2295 // } |
|
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|
2296 // if (*jvmpi::event_flags_array_at_addr(JVMPI_EVENT_METHOD_ENTRY ) || |
|
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|
2297 // *jvmpi::event_flags_array_at_addr(JVMPI_EVENT_METHOD_ENTRY2) ) { |
|
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|
2298 // SharedRuntime::jvmpi_method_entry(method, receiver); |
|
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|
2299 // } |
|
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|
2300 void InterpreterMacroAssembler::notify_method_entry() { |
|
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|
2301 // JVMTI |
|
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|
2302 // Whenever JVMTI puts a thread in interp_only_mode, method |
|
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|
2303 // entry/exit events are sent for that thread to track stack |
|
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diff
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|
2304 // depth. If it is possible to enter interp_only_mode we add |
|
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|
2305 // the code to check if the event should be sent. |
|
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diff
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|
2306 if (JvmtiExport::can_post_interpreter_events()) { |
|
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parents:
diff
changeset
|
2307 Label jvmti_post_done; |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2308 |
|
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parents:
diff
changeset
|
2309 lwz(R0, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); |
|
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parents:
diff
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|
2310 cmpwi(CCR0, R0, 0); |
|
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diff
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|
2311 beq(CCR0, jvmti_post_done); |
|
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parents:
diff
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|
2312 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry), |
| 17804 | 2313 /*check_exceptions=*/true CC_INTERP_ONLY(&& false)); |
|
14408
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parents:
diff
changeset
|
2314 |
|
ec28f9c041ff
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parents:
diff
changeset
|
2315 bind(jvmti_post_done); |
|
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parents:
diff
changeset
|
2316 } |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2317 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2318 |
|
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parents:
diff
changeset
|
2319 // Inline assembly for: |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2320 // |
|
ec28f9c041ff
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parents:
diff
changeset
|
2321 // if (thread is in interp_only_mode) { |
|
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parents:
diff
changeset
|
2322 // // save result |
|
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parents:
diff
changeset
|
2323 // InterpreterRuntime::post_method_exit(); |
|
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parents:
diff
changeset
|
2324 // // restore result |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2325 // } |
|
ec28f9c041ff
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parents:
diff
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|
2326 // if (*jvmpi::event_flags_array_at_addr(JVMPI_EVENT_METHOD_EXIT)) { |
|
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2327 // // save result |
|
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parents:
diff
changeset
|
2328 // SharedRuntime::jvmpi_method_exit(); |
|
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parents:
diff
changeset
|
2329 // // restore result |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2330 // } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2331 // |
|
ec28f9c041ff
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parents:
diff
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|
2332 // Native methods have their result stored in d_tmp and l_tmp. |
|
ec28f9c041ff
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parents:
diff
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|
2333 // Java methods have their result stored in the expression stack. |
| 17804 | 2334 void InterpreterMacroAssembler::notify_method_exit(bool is_native_method, TosState state, |
| 2335 NotifyMethodExitMode mode, bool check_exceptions) { | |
|
14408
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parents:
diff
changeset
|
2336 // JVMTI |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
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|
2337 // Whenever JVMTI puts a thread in interp_only_mode, method |
|
ec28f9c041ff
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parents:
diff
changeset
|
2338 // entry/exit events are sent for that thread to track stack |
|
ec28f9c041ff
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parents:
diff
changeset
|
2339 // depth. If it is possible to enter interp_only_mode we add |
|
ec28f9c041ff
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parents:
diff
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|
2340 // the code to check if the event should be sent. |
| 17804 | 2341 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { |
|
14408
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parents:
diff
changeset
|
2342 Label jvmti_post_done; |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2343 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2344 lwz(R0, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); |
|
ec28f9c041ff
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parents:
diff
changeset
|
2345 cmpwi(CCR0, R0, 0); |
|
ec28f9c041ff
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parents:
diff
changeset
|
2346 beq(CCR0, jvmti_post_done); |
| 17804 | 2347 CC_INTERP_ONLY(assert(is_native_method && !check_exceptions, "must not push state")); |
| 2348 if (!is_native_method) push(state); // Expose tos to GC. | |
|
14408
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parents:
diff
changeset
|
2349 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit), |
| 17804 | 2350 /*check_exceptions=*/check_exceptions); |
| 2351 if (!is_native_method) pop(state); | |
|
14408
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parents:
diff
changeset
|
2352 |
| 14445 | 2353 align(32, 12); |
|
14408
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parents:
diff
changeset
|
2354 bind(jvmti_post_done); |
|
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parents:
diff
changeset
|
2355 } |
| 17804 | 2356 |
| 2357 // Dtrace support not implemented. | |
|
14408
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8019972: PPC64 (part 9): platform files for interpreter only VM.
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parents:
diff
changeset
|
2358 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2359 |
| 17804 | 2360 #ifdef CC_INTERP |
|
14408
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parents:
diff
changeset
|
2361 // 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
|
2362 // (using parent_frame_resize) and push a new interpreter |
|
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parents:
diff
changeset
|
2363 // TOP_IJAVA_FRAME (using frame_size). |
|
ec28f9c041ff
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parents:
diff
changeset
|
2364 void InterpreterMacroAssembler::push_interpreter_frame(Register top_frame_size, Register parent_frame_resize, |
|
ec28f9c041ff
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parents:
diff
changeset
|
2365 Register tmp1, Register tmp2, Register tmp3, |
|
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parents:
diff
changeset
|
2366 Register tmp4, Register pc) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2367 assert_different_registers(top_frame_size, parent_frame_resize, tmp1, tmp2, tmp3, tmp4); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2368 ld(tmp1, _top_ijava_frame_abi(frame_manager_lr), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2369 mr(tmp2/*top_frame_sp*/, R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2370 // Move initial_caller_sp. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2371 ld(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
|
2372 neg(parent_frame_resize, parent_frame_resize); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2373 resize_frame(parent_frame_resize/*-parent_frame_resize*/, tmp3); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2374 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2375 // Set LR in new parent frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2376 std(tmp1, _abi(lr), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2377 // Set top_frame_sp info for new parent frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2378 std(tmp2, _parent_ijava_frame_abi(top_frame_sp), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2379 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
|
2380 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2381 // Push new TOP_IJAVA_FRAME. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2382 push_frame(top_frame_size, tmp2); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2383 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2384 get_PC_trash_LR(tmp3); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2385 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
|
2386 // Used for non-initial callers by unextended_sp(). |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2387 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
|
2388 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2389 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2390 // 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
|
2391 // PARENT_IJAVA_FRAME back into a TOP_IJAVA_FRAME. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2392 void InterpreterMacroAssembler::pop_interpreter_frame(Register tmp1, Register tmp2, Register tmp3, Register tmp4) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2393 assert_different_registers(tmp1, tmp2, tmp3, tmp4); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2394 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2395 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
|
2396 ld(tmp3, _abi(lr), tmp1); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2397 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2398 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
|
2399 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2400 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
|
2401 // Merge top frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2402 std(tmp2, _abi(callers_sp), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2403 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2404 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
|
2405 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2406 // Update C stack pointer to caller's top_abi. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2407 resize_frame_absolute(tmp2/*addr*/, tmp1/*tmp*/, tmp2/*tmp*/); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2408 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2409 // Update LR in top_frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2410 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
|
2411 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2412 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
|
2413 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2414 // Store the top-frame stack-pointer for c2i adapters. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2415 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
|
2416 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2417 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2418 // 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
|
2419 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.
goetz
parents:
diff
changeset
|
2420 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
|
2421 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2422 if (state == R14_state) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2423 ld(tmp1/*state's fp*/, state_(_last_Java_fp)); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2424 ld(tmp2/*state's sp*/, state_(_last_Java_sp)); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2425 } else if (state == R15_prev_state) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2426 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
|
2427 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
|
2428 } else { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2429 ShouldNotReachHere(); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2430 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2431 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2432 // Merge top frames. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2433 std(tmp1, _abi(callers_sp), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2434 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2435 // Tmp2 is new SP. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2436 // Tmp1 is parent's SP. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2437 resize_frame_absolute(tmp2/*addr*/, tmp1/*tmp*/, tmp2/*tmp*/); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2438 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2439 // Update LR in top_frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2440 // Must be interpreter frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2441 get_PC_trash_LR(tmp3); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2442 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
|
2443 // Used for non-initial callers by unextended_sp(). |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2444 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
|
2445 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2446 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2447 // Set SP to initial caller's sp, but before fix the back chain. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2448 void InterpreterMacroAssembler::resize_frame_to_initial_caller(Register tmp1, Register tmp2) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2449 ld(tmp1, _parent_ijava_frame_abi(initial_caller_sp), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2450 ld(tmp2, _parent_ijava_frame_abi(callers_sp), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2451 std(tmp2, _parent_ijava_frame_abi(callers_sp), tmp1); // Fix back chain ... |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2452 mr(R1_SP, tmp1); // ... and resize to initial caller. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2453 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2454 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2455 // Pop the current interpreter state (without popping the correspoding |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2456 // frame) and restore R14_state and R15_prev_state accordingly. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2457 // Use prev_state_may_be_0 to indicate whether prev_state may be 0 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2458 // in order to generate an extra check before retrieving prev_state_(_prev_link). |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2459 void InterpreterMacroAssembler::pop_interpreter_state(bool prev_state_may_be_0) |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2460 { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2461 // Move prev_state to state and restore prev_state from state_(_prev_link). |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2462 Label prev_state_is_0; |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2463 mr(R14_state, R15_prev_state); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2464 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2465 // Don't retrieve /*state==*/prev_state_(_prev_link) |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2466 // if /*state==*/prev_state is 0. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2467 if (prev_state_may_be_0) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2468 cmpdi(CCR0, R15_prev_state, 0); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2469 beq(CCR0, prev_state_is_0); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2470 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2471 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2472 ld(R15_prev_state, /*state==*/prev_state_(_prev_link)); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2473 bind(prev_state_is_0); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2474 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2475 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2476 void InterpreterMacroAssembler::restore_prev_state() { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2477 // _prev_link is private, but cInterpreter is a friend. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2478 ld(R15_prev_state, state_(_prev_link)); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2479 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2480 #endif // CC_INTERP |