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annotate src/cpu/ppc/vm/interp_masm_ppc_64.cpp @ 20418:b384ba33c9a0
8050942: PPC64: implement template interpreter for ppc64le
Reviewed-by: kvn, goetz
Contributed-by: asmundak@google.com
| author | kvn |
|---|---|
| date | Thu, 17 Jul 2014 15:40:04 -0700 |
| parents | fd1b9f02cc91 |
| children | f6bde7889409 |
| rev | line source |
|---|---|
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1 /* |
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2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
| 17804 | 3 * Copyright 2012, 2014 SAP AG. All rights reserved. |
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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5 * |
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6 * This code is free software; you can redistribute it and/or modify it |
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7 * under the terms of the GNU General Public License version 2 only, as |
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8 * published by the Free Software Foundation. |
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9 * |
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10 * This code is distributed in the hope that it will be useful, but WITHOUT |
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 * version 2 for more details (a copy is included in the LICENSE file that |
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14 * accompanied this code). |
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15 * |
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16 * You should have received a copy of the GNU General Public License version |
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17 * 2 along with this work; if not, write to the Free Software Foundation, |
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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19 * |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
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23 * |
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24 */ |
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25 |
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26 |
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27 #include "precompiled.hpp" |
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28 #include "asm/assembler.hpp" |
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29 #include "asm/macroAssembler.inline.hpp" |
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30 #include "interp_masm_ppc_64.hpp" |
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31 #include "interpreter/interpreterRuntime.hpp" |
| 17804 | 32 #include "prims/jvmtiThreadState.hpp" |
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33 |
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34 #ifdef PRODUCT |
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35 #define BLOCK_COMMENT(str) // nothing |
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36 #else |
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37 #define BLOCK_COMMENT(str) block_comment(str) |
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38 #endif |
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39 |
| 14445 | 40 void InterpreterMacroAssembler::null_check_throw(Register a, int offset, Register temp_reg) { |
| 41 #ifdef CC_INTERP | |
| 42 address exception_entry = StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 43 #else | |
| 44 address exception_entry = Interpreter::throw_NullPointerException_entry(); | |
| 45 #endif | |
| 46 MacroAssembler::null_check_throw(a, offset, temp_reg, exception_entry); | |
| 47 } | |
| 48 | |
| 17804 | 49 void InterpreterMacroAssembler::branch_to_entry(address entry, Register Rscratch) { |
| 50 assert(entry, "Entry must have been generated by now"); | |
| 51 if (is_within_range_of_b(entry, pc())) { | |
| 52 b(entry); | |
| 53 } else { | |
| 54 load_const_optimized(Rscratch, entry, R0); | |
| 55 mtctr(Rscratch); | |
| 56 bctr(); | |
| 57 } | |
| 58 } | |
| 59 | |
| 60 #ifndef CC_INTERP | |
| 61 | |
| 62 void InterpreterMacroAssembler::dispatch_next(TosState state, int bcp_incr) { | |
| 63 Register bytecode = R12_scratch2; | |
| 64 if (bcp_incr != 0) { | |
| 65 lbzu(bytecode, bcp_incr, R14_bcp); | |
| 66 } else { | |
| 67 lbz(bytecode, 0, R14_bcp); | |
| 68 } | |
| 69 | |
| 70 dispatch_Lbyte_code(state, bytecode, Interpreter::dispatch_table(state)); | |
| 71 } | |
| 72 | |
| 73 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
| 74 // Load current bytecode. | |
| 75 Register bytecode = R12_scratch2; | |
| 76 lbz(bytecode, 0, R14_bcp); | |
| 77 dispatch_Lbyte_code(state, bytecode, table); | |
| 78 } | |
| 79 | |
| 80 // Dispatch code executed in the prolog of a bytecode which does not do it's | |
| 81 // own dispatch. The dispatch address is computed and placed in R24_dispatch_addr. | |
| 82 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int bcp_incr) { | |
| 83 Register bytecode = R12_scratch2; | |
| 84 lbz(bytecode, bcp_incr, R14_bcp); | |
| 85 | |
| 86 load_dispatch_table(R24_dispatch_addr, Interpreter::dispatch_table(state)); | |
| 87 | |
| 88 sldi(bytecode, bytecode, LogBytesPerWord); | |
| 89 ldx(R24_dispatch_addr, R24_dispatch_addr, bytecode); | |
| 90 } | |
| 91 | |
| 92 // Dispatch code executed in the epilog of a bytecode which does not do it's | |
| 93 // own dispatch. The dispatch address in R24_dispatch_addr is used for the | |
| 94 // dispatch. | |
| 95 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int bcp_incr) { | |
| 96 mtctr(R24_dispatch_addr); | |
| 97 addi(R14_bcp, R14_bcp, bcp_incr); | |
| 98 bctr(); | |
| 99 } | |
| 100 | |
| 101 void InterpreterMacroAssembler::check_and_handle_popframe(Register scratch_reg) { | |
| 102 assert(scratch_reg != R0, "can't use R0 as scratch_reg here"); | |
| 103 if (JvmtiExport::can_pop_frame()) { | |
| 104 Label L; | |
| 105 | |
| 106 // Check the "pending popframe condition" flag in the current thread. | |
| 107 lwz(scratch_reg, in_bytes(JavaThread::popframe_condition_offset()), R16_thread); | |
| 108 | |
| 109 // Initiate popframe handling only if it is not already being | |
| 110 // processed. If the flag has the popframe_processing bit set, it | |
| 111 // means that this code is called *during* popframe handling - we | |
| 112 // don't want to reenter. | |
| 113 andi_(R0, scratch_reg, JavaThread::popframe_pending_bit); | |
| 114 beq(CCR0, L); | |
| 115 | |
| 116 andi_(R0, scratch_reg, JavaThread::popframe_processing_bit); | |
| 117 bne(CCR0, L); | |
| 118 | |
| 119 // Call the Interpreter::remove_activation_preserving_args_entry() | |
| 120 // func to get the address of the same-named entrypoint in the | |
| 121 // generated interpreter code. | |
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122 #if defined(ABI_ELFv2) |
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123 call_c(CAST_FROM_FN_PTR(address, |
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124 Interpreter::remove_activation_preserving_args_entry), |
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125 relocInfo::none); |
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126 #else |
| 17804 | 127 call_c(CAST_FROM_FN_PTR(FunctionDescriptor*, |
| 128 Interpreter::remove_activation_preserving_args_entry), | |
| 129 relocInfo::none); | |
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130 #endif |
| 17804 | 131 |
| 132 // Jump to Interpreter::_remove_activation_preserving_args_entry. | |
| 133 mtctr(R3_RET); | |
| 134 bctr(); | |
| 135 | |
| 136 align(32, 12); | |
| 137 bind(L); | |
| 138 } | |
| 139 } | |
| 140 | |
| 141 void InterpreterMacroAssembler::check_and_handle_earlyret(Register scratch_reg) { | |
| 142 const Register Rthr_state_addr = scratch_reg; | |
| 143 if (JvmtiExport::can_force_early_return()) { | |
| 144 Label Lno_early_ret; | |
| 145 ld(Rthr_state_addr, in_bytes(JavaThread::jvmti_thread_state_offset()), R16_thread); | |
| 146 cmpdi(CCR0, Rthr_state_addr, 0); | |
| 147 beq(CCR0, Lno_early_ret); | |
| 148 | |
| 149 lwz(R0, in_bytes(JvmtiThreadState::earlyret_state_offset()), Rthr_state_addr); | |
| 150 cmpwi(CCR0, R0, JvmtiThreadState::earlyret_pending); | |
| 151 bne(CCR0, Lno_early_ret); | |
| 152 | |
| 153 // Jump to Interpreter::_earlyret_entry. | |
| 154 lwz(R3_ARG1, in_bytes(JvmtiThreadState::earlyret_tos_offset()), Rthr_state_addr); | |
| 155 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry)); | |
| 156 mtlr(R3_RET); | |
| 157 blr(); | |
| 158 | |
| 159 align(32, 12); | |
| 160 bind(Lno_early_ret); | |
| 161 } | |
| 162 } | |
| 163 | |
| 164 void InterpreterMacroAssembler::load_earlyret_value(TosState state, Register Rscratch1) { | |
| 165 const Register RjvmtiState = Rscratch1; | |
| 166 const Register Rscratch2 = R0; | |
| 167 | |
| 168 ld(RjvmtiState, in_bytes(JavaThread::jvmti_thread_state_offset()), R16_thread); | |
| 169 li(Rscratch2, 0); | |
| 170 | |
| 171 switch (state) { | |
| 172 case atos: ld(R17_tos, in_bytes(JvmtiThreadState::earlyret_oop_offset()), RjvmtiState); | |
| 173 std(Rscratch2, in_bytes(JvmtiThreadState::earlyret_oop_offset()), RjvmtiState); | |
| 174 break; | |
| 175 case ltos: ld(R17_tos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
| 176 break; | |
| 177 case btos: // fall through | |
| 178 case ctos: // fall through | |
| 179 case stos: // fall through | |
| 180 case itos: lwz(R17_tos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
| 181 break; | |
| 182 case ftos: lfs(F15_ftos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
| 183 break; | |
| 184 case dtos: lfd(F15_ftos, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
| 185 break; | |
| 186 case vtos: break; | |
| 187 default : ShouldNotReachHere(); | |
| 188 } | |
| 189 | |
| 190 // Clean up tos value in the jvmti thread state. | |
| 191 std(Rscratch2, in_bytes(JvmtiThreadState::earlyret_value_offset()), RjvmtiState); | |
| 192 // Set tos state field to illegal value. | |
| 193 li(Rscratch2, ilgl); | |
| 194 stw(Rscratch2, in_bytes(JvmtiThreadState::earlyret_tos_offset()), RjvmtiState); | |
| 195 } | |
| 196 | |
| 197 // Common code to dispatch and dispatch_only. | |
| 198 // Dispatch value in Lbyte_code and increment Lbcp. | |
| 199 | |
| 200 void InterpreterMacroAssembler::load_dispatch_table(Register dst, address* table) { | |
| 201 address table_base = (address)Interpreter::dispatch_table((TosState)0); | |
| 202 intptr_t table_offs = (intptr_t)table - (intptr_t)table_base; | |
| 203 if (is_simm16(table_offs)) { | |
| 204 addi(dst, R25_templateTableBase, (int)table_offs); | |
| 205 } else { | |
| 206 load_const_optimized(dst, table, R0); | |
| 207 } | |
| 208 } | |
| 209 | |
| 210 void InterpreterMacroAssembler::dispatch_Lbyte_code(TosState state, Register bytecode, address* table, bool verify) { | |
| 211 if (verify) { | |
| 212 unimplemented("dispatch_Lbyte_code: verify"); // See Sparc Implementation to implement this | |
| 213 } | |
| 214 | |
| 215 #ifdef FAST_DISPATCH | |
| 216 unimplemented("dispatch_Lbyte_code FAST_DISPATCH"); | |
| 217 #else | |
| 218 assert_different_registers(bytecode, R11_scratch1); | |
| 219 | |
| 220 // Calc dispatch table address. | |
| 221 load_dispatch_table(R11_scratch1, table); | |
| 222 | |
| 223 sldi(R12_scratch2, bytecode, LogBytesPerWord); | |
| 224 ldx(R11_scratch1, R11_scratch1, R12_scratch2); | |
| 225 | |
| 226 // Jump off! | |
| 227 mtctr(R11_scratch1); | |
| 228 bctr(); | |
| 229 #endif | |
| 230 } | |
| 231 | |
| 232 void InterpreterMacroAssembler::load_receiver(Register Rparam_count, Register Rrecv_dst) { | |
| 233 sldi(Rrecv_dst, Rparam_count, Interpreter::logStackElementSize); | |
| 234 ldx(Rrecv_dst, Rrecv_dst, R15_esp); | |
| 235 } | |
| 236 | |
| 237 // helpers for expression stack | |
| 238 | |
| 239 void InterpreterMacroAssembler::pop_i(Register r) { | |
| 240 lwzu(r, Interpreter::stackElementSize, R15_esp); | |
| 241 } | |
| 242 | |
| 243 void InterpreterMacroAssembler::pop_ptr(Register r) { | |
| 244 ldu(r, Interpreter::stackElementSize, R15_esp); | |
| 245 } | |
| 246 | |
| 247 void InterpreterMacroAssembler::pop_l(Register r) { | |
| 248 ld(r, Interpreter::stackElementSize, R15_esp); | |
| 249 addi(R15_esp, R15_esp, 2 * Interpreter::stackElementSize); | |
| 250 } | |
| 251 | |
| 252 void InterpreterMacroAssembler::pop_f(FloatRegister f) { | |
| 253 lfsu(f, Interpreter::stackElementSize, R15_esp); | |
| 254 } | |
| 255 | |
| 256 void InterpreterMacroAssembler::pop_d(FloatRegister f) { | |
| 257 lfd(f, Interpreter::stackElementSize, R15_esp); | |
| 258 addi(R15_esp, R15_esp, 2 * Interpreter::stackElementSize); | |
| 259 } | |
| 260 | |
| 261 void InterpreterMacroAssembler::push_i(Register r) { | |
| 262 stw(r, 0, R15_esp); | |
| 263 addi(R15_esp, R15_esp, - Interpreter::stackElementSize ); | |
| 264 } | |
| 265 | |
| 266 void InterpreterMacroAssembler::push_ptr(Register r) { | |
| 267 std(r, 0, R15_esp); | |
| 268 addi(R15_esp, R15_esp, - Interpreter::stackElementSize ); | |
| 269 } | |
| 270 | |
| 271 void InterpreterMacroAssembler::push_l(Register r) { | |
| 272 std(r, - Interpreter::stackElementSize, R15_esp); | |
| 273 addi(R15_esp, R15_esp, - 2 * Interpreter::stackElementSize ); | |
| 274 } | |
| 275 | |
| 276 void InterpreterMacroAssembler::push_f(FloatRegister f) { | |
| 277 stfs(f, 0, R15_esp); | |
| 278 addi(R15_esp, R15_esp, - Interpreter::stackElementSize ); | |
| 279 } | |
| 280 | |
| 281 void InterpreterMacroAssembler::push_d(FloatRegister f) { | |
| 282 stfd(f, - Interpreter::stackElementSize, R15_esp); | |
| 283 addi(R15_esp, R15_esp, - 2 * Interpreter::stackElementSize ); | |
| 284 } | |
| 285 | |
| 286 void InterpreterMacroAssembler::push_2ptrs(Register first, Register second) { | |
| 287 std(first, 0, R15_esp); | |
| 288 std(second, -Interpreter::stackElementSize, R15_esp); | |
| 289 addi(R15_esp, R15_esp, - 2 * Interpreter::stackElementSize ); | |
| 290 } | |
| 291 | |
| 292 void InterpreterMacroAssembler::push_l_pop_d(Register l, FloatRegister d) { | |
| 293 std(l, 0, R15_esp); | |
| 294 lfd(d, 0, R15_esp); | |
| 295 } | |
| 296 | |
| 297 void InterpreterMacroAssembler::push_d_pop_l(FloatRegister d, Register l) { | |
| 298 stfd(d, 0, R15_esp); | |
| 299 ld(l, 0, R15_esp); | |
| 300 } | |
| 301 | |
| 302 void InterpreterMacroAssembler::push(TosState state) { | |
| 303 switch (state) { | |
| 304 case atos: push_ptr(); break; | |
| 305 case btos: | |
| 306 case ctos: | |
| 307 case stos: | |
| 308 case itos: push_i(); break; | |
| 309 case ltos: push_l(); break; | |
| 310 case ftos: push_f(); break; | |
| 311 case dtos: push_d(); break; | |
| 312 case vtos: /* nothing to do */ break; | |
| 313 default : ShouldNotReachHere(); | |
| 314 } | |
| 315 } | |
| 316 | |
| 317 void InterpreterMacroAssembler::pop(TosState state) { | |
| 318 switch (state) { | |
| 319 case atos: pop_ptr(); break; | |
| 320 case btos: | |
| 321 case ctos: | |
| 322 case stos: | |
| 323 case itos: pop_i(); break; | |
| 324 case ltos: pop_l(); break; | |
| 325 case ftos: pop_f(); break; | |
| 326 case dtos: pop_d(); break; | |
| 327 case vtos: /* nothing to do */ break; | |
| 328 default : ShouldNotReachHere(); | |
| 329 } | |
| 330 verify_oop(R17_tos, state); | |
| 331 } | |
| 332 | |
| 333 void InterpreterMacroAssembler::empty_expression_stack() { | |
| 334 addi(R15_esp, R26_monitor, - Interpreter::stackElementSize); | |
| 335 } | |
| 336 | |
| 337 void InterpreterMacroAssembler::get_2_byte_integer_at_bcp(int bcp_offset, | |
| 338 Register Rdst, | |
| 339 signedOrNot is_signed) { | |
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340 #if defined(VM_LITTLE_ENDIAN) |
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341 if (bcp_offset) { |
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342 load_const_optimized(Rdst, bcp_offset); |
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343 lhbrx(Rdst, R14_bcp, Rdst); |
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344 } else { |
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345 lhbrx(Rdst, R14_bcp); |
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346 } |
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347 if (is_signed == Signed) { |
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348 extsh(Rdst, Rdst); |
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349 } |
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350 #else |
| 17804 | 351 // Read Java big endian format. |
| 352 if (is_signed == Signed) { | |
| 353 lha(Rdst, bcp_offset, R14_bcp); | |
| 354 } else { | |
| 355 lhz(Rdst, bcp_offset, R14_bcp); | |
| 356 } | |
| 357 #endif | |
| 358 } | |
| 359 | |
| 360 void InterpreterMacroAssembler::get_4_byte_integer_at_bcp(int bcp_offset, | |
| 361 Register Rdst, | |
| 362 signedOrNot is_signed) { | |
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363 #if defined(VM_LITTLE_ENDIAN) |
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364 if (bcp_offset) { |
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365 load_const_optimized(Rdst, bcp_offset); |
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366 lwbrx(Rdst, R14_bcp, Rdst); |
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367 } else { |
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368 lwbrx(Rdst, R14_bcp); |
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369 } |
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370 if (is_signed == Signed) { |
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371 extsw(Rdst, Rdst); |
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372 } |
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373 #else |
| 17804 | 374 // Read Java big endian format. |
| 375 if (bcp_offset & 3) { // Offset unaligned? | |
| 376 load_const_optimized(Rdst, bcp_offset); | |
| 377 if (is_signed == Signed) { | |
| 378 lwax(Rdst, R14_bcp, Rdst); | |
| 379 } else { | |
| 380 lwzx(Rdst, R14_bcp, Rdst); | |
| 381 } | |
| 382 } else { | |
| 383 if (is_signed == Signed) { | |
| 384 lwa(Rdst, bcp_offset, R14_bcp); | |
| 385 } else { | |
| 386 lwz(Rdst, bcp_offset, R14_bcp); | |
| 387 } | |
| 388 } | |
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389 #endif |
| 17804 | 390 } |
| 391 | |
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392 |
| 17804 | 393 // Load the constant pool cache index from the bytecode stream. |
| 394 // | |
| 395 // Kills / writes: | |
| 396 // - Rdst, Rscratch | |
| 397 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register Rdst, int bcp_offset, size_t index_size) { | |
| 398 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); | |
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399 // Cache index is always in the native format, courtesy of Rewriter. |
| 17804 | 400 if (index_size == sizeof(u2)) { |
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401 lhz(Rdst, bcp_offset, R14_bcp); |
| 17804 | 402 } else if (index_size == sizeof(u4)) { |
| 403 assert(EnableInvokeDynamic, "giant index used only for JSR 292"); | |
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404 if (bcp_offset & 3) { |
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405 load_const_optimized(Rdst, bcp_offset); |
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406 lwax(Rdst, R14_bcp, Rdst); |
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407 } else { |
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408 lwa(Rdst, bcp_offset, R14_bcp); |
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409 } |
| 17804 | 410 assert(ConstantPool::decode_invokedynamic_index(~123) == 123, "else change next line"); |
| 411 nand(Rdst, Rdst, Rdst); // convert to plain index | |
| 412 } else if (index_size == sizeof(u1)) { | |
| 413 lbz(Rdst, bcp_offset, R14_bcp); | |
| 414 } else { | |
| 415 ShouldNotReachHere(); | |
| 416 } | |
| 417 // Rdst now contains cp cache index. | |
| 418 } | |
| 419 | |
| 420 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, int bcp_offset, size_t index_size) { | |
| 421 get_cache_index_at_bcp(cache, bcp_offset, index_size); | |
| 422 sldi(cache, cache, exact_log2(in_words(ConstantPoolCacheEntry::size()) * BytesPerWord)); | |
| 423 add(cache, R27_constPoolCache, cache); | |
| 424 } | |
| 425 | |
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426 // Load 4-byte signed or unsigned integer in Java format (that is, big-endian format) |
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427 // from (Rsrc)+offset. |
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428 void InterpreterMacroAssembler::get_u4(Register Rdst, Register Rsrc, int offset, |
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429 signedOrNot is_signed) { |
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430 #if defined(VM_LITTLE_ENDIAN) |
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431 if (offset) { |
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432 load_const_optimized(Rdst, offset); |
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433 lwbrx(Rdst, Rdst, Rsrc); |
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434 } else { |
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435 lwbrx(Rdst, Rsrc); |
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436 } |
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437 if (is_signed == Signed) { |
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438 extsw(Rdst, Rdst); |
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439 } |
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440 #else |
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441 if (is_signed == Signed) { |
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442 lwa(Rdst, offset, Rsrc); |
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443 } else { |
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444 lwz(Rdst, offset, Rsrc); |
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445 } |
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446 #endif |
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447 } |
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448 |
| 17804 | 449 // Load object from cpool->resolved_references(index). |
| 450 void InterpreterMacroAssembler::load_resolved_reference_at_index(Register result, Register index) { | |
| 451 assert_different_registers(result, index); | |
| 452 get_constant_pool(result); | |
| 453 | |
| 454 // Convert from field index to resolved_references() index and from | |
| 455 // word index to byte offset. Since this is a java object, it can be compressed. | |
| 456 Register tmp = index; // reuse | |
| 457 sldi(tmp, index, LogBytesPerHeapOop); | |
| 458 // Load pointer for resolved_references[] objArray. | |
| 459 ld(result, ConstantPool::resolved_references_offset_in_bytes(), result); | |
| 460 // JNIHandles::resolve(result) | |
| 461 ld(result, 0, result); | |
| 462 #ifdef ASSERT | |
| 463 Label index_ok; | |
| 464 lwa(R0, arrayOopDesc::length_offset_in_bytes(), result); | |
| 465 sldi(R0, R0, LogBytesPerHeapOop); | |
| 466 cmpd(CCR0, tmp, R0); | |
| 467 blt(CCR0, index_ok); | |
| 468 stop("resolved reference index out of bounds", 0x09256); | |
| 469 bind(index_ok); | |
| 470 #endif | |
| 471 // Add in the index. | |
| 472 add(result, tmp, result); | |
| 473 load_heap_oop(result, arrayOopDesc::base_offset_in_bytes(T_OBJECT), result); | |
| 474 } | |
| 475 | |
| 476 // Generate a subtype check: branch to ok_is_subtype if sub_klass is | |
| 477 // a subtype of super_klass. Blows registers Rsub_klass, tmp1, tmp2. | |
| 478 void InterpreterMacroAssembler::gen_subtype_check(Register Rsub_klass, Register Rsuper_klass, Register Rtmp1, | |
| 479 Register Rtmp2, Register Rtmp3, Label &ok_is_subtype) { | |
| 480 // Profile the not-null value's klass. | |
| 481 profile_typecheck(Rsub_klass, Rtmp1, Rtmp2); | |
| 482 check_klass_subtype(Rsub_klass, Rsuper_klass, Rtmp1, Rtmp2, ok_is_subtype); | |
| 483 profile_typecheck_failed(Rtmp1, Rtmp2); | |
| 484 } | |
| 485 | |
| 486 void InterpreterMacroAssembler::generate_stack_overflow_check_with_compare_and_throw(Register Rmem_frame_size, Register Rscratch1) { | |
| 487 Label done; | |
| 488 sub(Rmem_frame_size, R1_SP, Rmem_frame_size); | |
| 489 ld(Rscratch1, thread_(stack_overflow_limit)); | |
| 490 cmpld(CCR0/*is_stack_overflow*/, Rmem_frame_size, Rscratch1); | |
| 491 bgt(CCR0/*is_stack_overflow*/, done); | |
| 492 | |
| 493 // Load target address of the runtime stub. | |
| 494 assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "generated in wrong order"); | |
| 495 load_const_optimized(Rscratch1, (StubRoutines::throw_StackOverflowError_entry()), R0); | |
| 496 mtctr(Rscratch1); | |
| 497 // Restore caller_sp. | |
| 498 #ifdef ASSERT | |
| 499 ld(Rscratch1, 0, R1_SP); | |
| 500 ld(R0, 0, R21_sender_SP); | |
| 501 cmpd(CCR0, R0, Rscratch1); | |
| 502 asm_assert_eq("backlink", 0x547); | |
| 503 #endif // ASSERT | |
| 504 mr(R1_SP, R21_sender_SP); | |
| 505 bctr(); | |
| 506 | |
| 507 align(32, 12); | |
| 508 bind(done); | |
| 509 } | |
| 510 | |
| 511 // Separate these two to allow for delay slot in middle. | |
| 512 // These are used to do a test and full jump to exception-throwing code. | |
| 513 | |
| 514 // Check that index is in range for array, then shift index by index_shift, | |
| 515 // and put arrayOop + shifted_index into res. | |
| 516 // Note: res is still shy of address by array offset into object. | |
| 517 | |
| 518 void InterpreterMacroAssembler::index_check_without_pop(Register Rarray, Register Rindex, int index_shift, Register Rtmp, Register Rres) { | |
| 519 // Check that index is in range for array, then shift index by index_shift, | |
| 520 // and put arrayOop + shifted_index into res. | |
| 521 // Note: res is still shy of address by array offset into object. | |
| 522 // Kills: | |
| 523 // - Rindex | |
| 524 // Writes: | |
| 525 // - Rres: Address that corresponds to the array index if check was successful. | |
| 526 verify_oop(Rarray); | |
| 527 const Register Rlength = R0; | |
| 528 const Register RsxtIndex = Rtmp; | |
| 529 Label LisNull, LnotOOR; | |
| 530 | |
| 531 // Array nullcheck | |
| 532 if (!ImplicitNullChecks) { | |
| 533 cmpdi(CCR0, Rarray, 0); | |
| 534 beq(CCR0, LisNull); | |
| 535 } else { | |
| 536 null_check_throw(Rarray, arrayOopDesc::length_offset_in_bytes(), /*temp*/RsxtIndex); | |
| 537 } | |
| 538 | |
| 539 // Rindex might contain garbage in upper bits (remember that we don't sign extend | |
| 540 // during integer arithmetic operations). So kill them and put value into same register | |
| 541 // where ArrayIndexOutOfBounds would expect the index in. | |
| 542 rldicl(RsxtIndex, Rindex, 0, 32); // zero extend 32 bit -> 64 bit | |
| 543 | |
| 544 // Index check | |
| 545 lwz(Rlength, arrayOopDesc::length_offset_in_bytes(), Rarray); | |
| 546 cmplw(CCR0, Rindex, Rlength); | |
| 547 sldi(RsxtIndex, RsxtIndex, index_shift); | |
| 548 blt(CCR0, LnotOOR); | |
| 549 load_dispatch_table(Rtmp, (address*)Interpreter::_throw_ArrayIndexOutOfBoundsException_entry); | |
| 550 mtctr(Rtmp); | |
| 551 bctr(); | |
| 552 | |
| 553 if (!ImplicitNullChecks) { | |
| 554 bind(LisNull); | |
| 555 load_dispatch_table(Rtmp, (address*)Interpreter::_throw_NullPointerException_entry); | |
| 556 mtctr(Rtmp); | |
| 557 bctr(); | |
| 558 } | |
| 559 | |
| 560 align(32, 16); | |
| 561 bind(LnotOOR); | |
| 562 | |
| 563 // Calc address | |
| 564 add(Rres, RsxtIndex, Rarray); | |
| 565 } | |
| 566 | |
| 567 void InterpreterMacroAssembler::index_check(Register array, Register index, int index_shift, Register tmp, Register res) { | |
| 568 // pop array | |
| 569 pop_ptr(array); | |
| 570 | |
| 571 // check array | |
| 572 index_check_without_pop(array, index, index_shift, tmp, res); | |
| 573 } | |
| 574 | |
| 575 void InterpreterMacroAssembler::get_const(Register Rdst) { | |
| 576 ld(Rdst, in_bytes(Method::const_offset()), R19_method); | |
| 577 } | |
| 578 | |
| 579 void InterpreterMacroAssembler::get_constant_pool(Register Rdst) { | |
| 580 get_const(Rdst); | |
| 581 ld(Rdst, in_bytes(ConstMethod::constants_offset()), Rdst); | |
| 582 } | |
| 583 | |
| 584 void InterpreterMacroAssembler::get_constant_pool_cache(Register Rdst) { | |
| 585 get_constant_pool(Rdst); | |
| 586 ld(Rdst, ConstantPool::cache_offset_in_bytes(), Rdst); | |
| 587 } | |
| 588 | |
| 589 void InterpreterMacroAssembler::get_cpool_and_tags(Register Rcpool, Register Rtags) { | |
| 590 get_constant_pool(Rcpool); | |
| 591 ld(Rtags, ConstantPool::tags_offset_in_bytes(), Rcpool); | |
| 592 } | |
| 593 | |
| 594 // Unlock if synchronized method. | |
| 595 // | |
| 596 // Unlock the receiver if this is a synchronized method. | |
| 597 // Unlock any Java monitors from synchronized blocks. | |
| 598 // | |
| 599 // If there are locked Java monitors | |
| 600 // If throw_monitor_exception | |
| 601 // throws IllegalMonitorStateException | |
| 602 // Else if install_monitor_exception | |
| 603 // installs IllegalMonitorStateException | |
| 604 // Else | |
| 605 // no error processing | |
| 606 void InterpreterMacroAssembler::unlock_if_synchronized_method(TosState state, | |
| 607 bool throw_monitor_exception, | |
| 608 bool install_monitor_exception) { | |
| 609 Label Lunlocked, Lno_unlock; | |
| 610 { | |
| 611 Register Rdo_not_unlock_flag = R11_scratch1; | |
| 612 Register Raccess_flags = R12_scratch2; | |
| 613 | |
| 614 // Check if synchronized method or unlocking prevented by | |
| 615 // JavaThread::do_not_unlock_if_synchronized flag. | |
| 616 lbz(Rdo_not_unlock_flag, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread); | |
| 617 lwz(Raccess_flags, in_bytes(Method::access_flags_offset()), R19_method); | |
| 618 li(R0, 0); | |
| 619 stb(R0, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread); // reset flag | |
| 620 | |
| 621 push(state); | |
| 622 | |
| 623 // Skip if we don't have to unlock. | |
| 624 rldicl_(R0, Raccess_flags, 64-JVM_ACC_SYNCHRONIZED_BIT, 63); // Extract bit and compare to 0. | |
| 625 beq(CCR0, Lunlocked); | |
| 626 | |
| 627 cmpwi(CCR0, Rdo_not_unlock_flag, 0); | |
| 628 bne(CCR0, Lno_unlock); | |
| 629 } | |
| 630 | |
| 631 // Unlock | |
| 632 { | |
| 633 Register Rmonitor_base = R11_scratch1; | |
| 634 | |
| 635 Label Lunlock; | |
| 636 // If it's still locked, everything is ok, unlock it. | |
| 637 ld(Rmonitor_base, 0, R1_SP); | |
| 638 addi(Rmonitor_base, Rmonitor_base, - (frame::ijava_state_size + frame::interpreter_frame_monitor_size_in_bytes())); // Monitor base | |
| 639 | |
| 640 ld(R0, BasicObjectLock::obj_offset_in_bytes(), Rmonitor_base); | |
| 641 cmpdi(CCR0, R0, 0); | |
| 642 bne(CCR0, Lunlock); | |
| 643 | |
| 644 // If it's already unlocked, throw exception. | |
| 645 if (throw_monitor_exception) { | |
| 646 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 647 should_not_reach_here(); | |
| 648 } else { | |
| 649 if (install_monitor_exception) { | |
| 650 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 651 b(Lunlocked); | |
| 652 } | |
| 653 } | |
| 654 | |
| 655 bind(Lunlock); | |
| 656 unlock_object(Rmonitor_base); | |
| 657 } | |
| 658 | |
| 659 // Check that all other monitors are unlocked. Throw IllegelMonitorState exception if not. | |
| 660 bind(Lunlocked); | |
| 661 { | |
| 662 Label Lexception, Lrestart; | |
| 663 Register Rcurrent_obj_addr = R11_scratch1; | |
| 664 const int delta = frame::interpreter_frame_monitor_size_in_bytes(); | |
| 665 assert((delta & LongAlignmentMask) == 0, "sizeof BasicObjectLock must be even number of doublewords"); | |
| 666 | |
| 667 bind(Lrestart); | |
| 668 // Set up search loop: Calc num of iterations. | |
| 669 { | |
| 670 Register Riterations = R12_scratch2; | |
| 671 Register Rmonitor_base = Rcurrent_obj_addr; | |
| 672 ld(Rmonitor_base, 0, R1_SP); | |
| 673 addi(Rmonitor_base, Rmonitor_base, - frame::ijava_state_size); // Monitor base | |
| 674 | |
| 675 subf_(Riterations, R26_monitor, Rmonitor_base); | |
| 676 ble(CCR0, Lno_unlock); | |
| 677 | |
| 678 addi(Rcurrent_obj_addr, Rmonitor_base, BasicObjectLock::obj_offset_in_bytes() - frame::interpreter_frame_monitor_size_in_bytes()); | |
| 679 // Check if any monitor is on stack, bail out if not | |
| 680 srdi(Riterations, Riterations, exact_log2(delta)); | |
| 681 mtctr(Riterations); | |
| 682 } | |
| 683 | |
| 684 // The search loop: Look for locked monitors. | |
| 685 { | |
| 686 const Register Rcurrent_obj = R0; | |
| 687 Label Lloop; | |
| 688 | |
| 689 ld(Rcurrent_obj, 0, Rcurrent_obj_addr); | |
| 690 addi(Rcurrent_obj_addr, Rcurrent_obj_addr, -delta); | |
| 691 bind(Lloop); | |
| 692 | |
| 693 // Check if current entry is used. | |
| 694 cmpdi(CCR0, Rcurrent_obj, 0); | |
| 695 bne(CCR0, Lexception); | |
| 696 // Preload next iteration's compare value. | |
| 697 ld(Rcurrent_obj, 0, Rcurrent_obj_addr); | |
| 698 addi(Rcurrent_obj_addr, Rcurrent_obj_addr, -delta); | |
| 699 bdnz(Lloop); | |
| 700 } | |
| 701 // Fell through: Everything's unlocked => finish. | |
| 702 b(Lno_unlock); | |
| 703 | |
| 704 // An object is still locked => need to throw exception. | |
| 705 bind(Lexception); | |
| 706 if (throw_monitor_exception) { | |
| 707 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 708 should_not_reach_here(); | |
| 709 } else { | |
| 710 // Stack unrolling. Unlock object and if requested, install illegal_monitor_exception. | |
| 711 // Unlock does not block, so don't have to worry about the frame. | |
| 712 Register Rmonitor_addr = R11_scratch1; | |
| 713 addi(Rmonitor_addr, Rcurrent_obj_addr, -BasicObjectLock::obj_offset_in_bytes() + delta); | |
| 714 unlock_object(Rmonitor_addr); | |
| 715 if (install_monitor_exception) { | |
| 716 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 717 } | |
| 718 b(Lrestart); | |
| 719 } | |
| 720 } | |
| 721 | |
| 722 align(32, 12); | |
| 723 bind(Lno_unlock); | |
| 724 pop(state); | |
| 725 } | |
| 726 | |
| 727 // Support function for remove_activation & Co. | |
| 728 void InterpreterMacroAssembler::merge_frames(Register Rsender_sp, Register return_pc, Register Rscratch1, Register Rscratch2) { | |
| 729 // Pop interpreter frame. | |
| 730 ld(Rscratch1, 0, R1_SP); // *SP | |
| 731 ld(Rsender_sp, _ijava_state_neg(sender_sp), Rscratch1); // top_frame_sp | |
| 732 ld(Rscratch2, 0, Rscratch1); // **SP | |
| 733 #ifdef ASSERT | |
| 734 { | |
| 735 Label Lok; | |
| 736 ld(R0, _ijava_state_neg(ijava_reserved), Rscratch1); | |
| 737 cmpdi(CCR0, R0, 0x5afe); | |
| 738 beq(CCR0, Lok); | |
| 739 stop("frame corrupted (remove activation)", 0x5afe); | |
| 740 bind(Lok); | |
| 741 } | |
| 742 #endif | |
| 743 if (return_pc!=noreg) { | |
| 744 ld(return_pc, _abi(lr), Rscratch1); // LR | |
| 745 } | |
| 746 | |
| 747 // Merge top frames. | |
| 748 subf(Rscratch1, R1_SP, Rsender_sp); // top_frame_sp - SP | |
| 749 stdux(Rscratch2, R1_SP, Rscratch1); // atomically set *(SP = top_frame_sp) = **SP | |
| 750 } | |
| 751 | |
| 752 // Remove activation. | |
| 753 // | |
| 754 // Unlock the receiver if this is a synchronized method. | |
| 755 // Unlock any Java monitors from synchronized blocks. | |
| 756 // Remove the activation from the stack. | |
| 757 // | |
| 758 // If there are locked Java monitors | |
| 759 // If throw_monitor_exception | |
| 760 // throws IllegalMonitorStateException | |
| 761 // Else if install_monitor_exception | |
| 762 // installs IllegalMonitorStateException | |
| 763 // Else | |
| 764 // no error processing | |
| 765 void InterpreterMacroAssembler::remove_activation(TosState state, | |
| 766 bool throw_monitor_exception, | |
| 767 bool install_monitor_exception) { | |
| 768 unlock_if_synchronized_method(state, throw_monitor_exception, install_monitor_exception); | |
| 769 | |
| 770 // Save result (push state before jvmti call and pop it afterwards) and notify jvmti. | |
| 771 notify_method_exit(false, state, NotifyJVMTI, true); | |
| 772 | |
| 773 verify_oop(R17_tos, state); | |
| 774 verify_thread(); | |
| 775 | |
| 776 merge_frames(/*top_frame_sp*/ R21_sender_SP, /*return_pc*/ R0, R11_scratch1, R12_scratch2); | |
| 777 mtlr(R0); | |
| 778 } | |
| 779 | |
| 780 #endif // !CC_INTERP | |
| 781 | |
|
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782 // Lock object |
|
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783 // |
|
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784 // Registers alive |
|
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785 // monitor - Address of the BasicObjectLock to be used for locking, |
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786 // which must be initialized with the object to lock. |
|
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787 // object - Address of the object to be locked. |
|
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788 // |
|
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789 void InterpreterMacroAssembler::lock_object(Register monitor, Register object) { |
|
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790 if (UseHeavyMonitors) { |
|
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791 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), |
| 14445 | 792 monitor, /*check_for_exceptions=*/true CC_INTERP_ONLY(&& false)); |
|
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793 } else { |
|
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794 // template code: |
|
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795 // |
|
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796 // markOop displaced_header = obj->mark().set_unlocked(); |
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797 // monitor->lock()->set_displaced_header(displaced_header); |
|
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798 // if (Atomic::cmpxchg_ptr(/*ex=*/monitor, /*addr*/obj->mark_addr(), /*cmp*/displaced_header) == displaced_header) { |
|
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799 // // We stored the monitor address into the object's mark word. |
|
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800 // } else if (THREAD->is_lock_owned((address)displaced_header)) |
|
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801 // // Simple recursive case. |
|
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802 // monitor->lock()->set_displaced_header(NULL); |
|
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803 // } else { |
|
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804 // // Slow path. |
|
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805 // InterpreterRuntime::monitorenter(THREAD, monitor); |
|
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806 // } |
|
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807 |
|
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808 const Register displaced_header = R7_ARG5; |
|
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809 const Register object_mark_addr = R8_ARG6; |
|
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810 const Register current_header = R9_ARG7; |
|
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811 const Register tmp = R10_ARG8; |
|
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812 |
|
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813 Label done; |
| 14445 | 814 Label cas_failed, slow_case; |
|
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815 |
|
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816 assert_different_registers(displaced_header, object_mark_addr, current_header, tmp); |
|
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817 |
|
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818 // markOop displaced_header = obj->mark().set_unlocked(); |
|
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819 |
|
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820 // Load markOop from object into displaced_header. |
|
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821 ld(displaced_header, oopDesc::mark_offset_in_bytes(), object); |
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822 |
|
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823 if (UseBiasedLocking) { |
|
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824 biased_locking_enter(CCR0, object, displaced_header, tmp, current_header, done, &slow_case); |
|
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825 } |
|
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826 |
|
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827 // Set displaced_header to be (markOop of object | UNLOCK_VALUE). |
|
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828 ori(displaced_header, displaced_header, markOopDesc::unlocked_value); |
|
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829 |
|
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830 // monitor->lock()->set_displaced_header(displaced_header); |
|
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831 |
|
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832 // Initialize the box (Must happen before we update the object mark!). |
|
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833 std(displaced_header, BasicObjectLock::lock_offset_in_bytes() + |
| 14445 | 834 BasicLock::displaced_header_offset_in_bytes(), monitor); |
|
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835 |
|
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836 // if (Atomic::cmpxchg_ptr(/*ex=*/monitor, /*addr*/obj->mark_addr(), /*cmp*/displaced_header) == displaced_header) { |
|
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837 |
|
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838 // Store stack address of the BasicObjectLock (this is monitor) into object. |
|
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839 addi(object_mark_addr, object, oopDesc::mark_offset_in_bytes()); |
|
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840 |
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841 // Must fence, otherwise, preceding store(s) may float below cmpxchg. |
|
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842 // CmpxchgX sets CCR0 to cmpX(current, displaced). |
|
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843 fence(); // TODO: replace by MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq ? |
|
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844 cmpxchgd(/*flag=*/CCR0, |
|
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845 /*current_value=*/current_header, |
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846 /*compare_value=*/displaced_header, /*exchange_value=*/monitor, |
|
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847 /*where=*/object_mark_addr, |
|
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|
848 MacroAssembler::MemBarRel | MacroAssembler::MemBarAcq, |
| 14445 | 849 MacroAssembler::cmpxchgx_hint_acquire_lock(), |
| 850 noreg, | |
| 851 &cas_failed); | |
|
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852 |
|
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|
853 // If the compare-and-exchange succeeded, then we found an unlocked |
|
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854 // object and we have now locked it. |
| 14445 | 855 b(done); |
| 856 bind(cas_failed); | |
|
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857 |
|
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|
858 // } else if (THREAD->is_lock_owned((address)displaced_header)) |
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859 // // Simple recursive case. |
|
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|
860 // monitor->lock()->set_displaced_header(NULL); |
|
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|
861 |
|
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|
862 // We did not see an unlocked object so try the fast recursive case. |
|
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|
863 |
|
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|
864 // Check if owner is self by comparing the value in the markOop of object |
|
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865 // (current_header) with the stack pointer. |
|
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866 sub(current_header, current_header, R1_SP); |
|
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|
867 |
|
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|
868 assert(os::vm_page_size() > 0xfff, "page size too small - change the constant"); |
|
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869 load_const_optimized(tmp, |
|
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870 (address) (~(os::vm_page_size()-1) | |
|
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871 markOopDesc::lock_mask_in_place)); |
|
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|
872 |
|
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|
873 and_(R0/*==0?*/, current_header, tmp); |
|
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874 // If condition is true we are done and hence we can store 0 in the displaced |
|
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875 // header indicating it is a recursive lock. |
|
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|
876 bne(CCR0, slow_case); |
|
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877 release(); |
|
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878 std(R0/*==0!*/, BasicObjectLock::lock_offset_in_bytes() + |
| 14445 | 879 BasicLock::displaced_header_offset_in_bytes(), monitor); |
|
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|
880 b(done); |
|
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|
881 |
|
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|
882 // } else { |
|
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|
883 // // Slow path. |
|
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|
884 // InterpreterRuntime::monitorenter(THREAD, monitor); |
|
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|
885 |
|
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|
886 // None of the above fast optimizations worked so we have to get into the |
|
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887 // slow case of monitor enter. |
|
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888 bind(slow_case); |
|
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889 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), |
| 14445 | 890 monitor, /*check_for_exceptions=*/true CC_INTERP_ONLY(&& false)); |
|
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891 // } |
| 17804 | 892 align(32, 12); |
|
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893 bind(done); |
|
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894 } |
|
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895 } |
|
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896 |
|
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897 // Unlocks an object. Used in monitorexit bytecode and remove_activation. |
|
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898 // |
|
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899 // Registers alive |
|
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900 // monitor - Address of the BasicObjectLock to be used for locking, |
|
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901 // which must be initialized with the object to lock. |
|
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902 // |
|
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903 // Throw IllegalMonitorException if object is not locked by current thread. |
| 14445 | 904 void InterpreterMacroAssembler::unlock_object(Register monitor, bool check_for_exceptions) { |
|
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905 if (UseHeavyMonitors) { |
|
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906 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), |
| 17804 | 907 monitor, check_for_exceptions CC_INTERP_ONLY(&& false)); |
|
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908 } else { |
|
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909 |
|
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|
910 // template code: |
|
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911 // |
|
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912 // if ((displaced_header = monitor->displaced_header()) == NULL) { |
| 17804 | 913 // // Recursive unlock. Mark the monitor unlocked by setting the object field to NULL. |
|
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914 // monitor->set_obj(NULL); |
|
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915 // } else if (Atomic::cmpxchg_ptr(displaced_header, obj->mark_addr(), monitor) == monitor) { |
|
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916 // // We swapped the unlocked mark in displaced_header into the object's mark word. |
|
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917 // monitor->set_obj(NULL); |
|
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918 // } else { |
|
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919 // // Slow path. |
|
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920 // InterpreterRuntime::monitorexit(THREAD, monitor); |
|
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921 // } |
|
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|
922 |
|
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923 const Register object = R7_ARG5; |
|
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924 const Register displaced_header = R8_ARG6; |
|
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925 const Register object_mark_addr = R9_ARG7; |
|
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926 const Register current_header = R10_ARG8; |
|
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927 |
| 14445 | 928 Label free_slot; |
|
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929 Label slow_case; |
|
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|
930 |
|
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931 assert_different_registers(object, displaced_header, object_mark_addr, current_header); |
|
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932 |
|
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|
933 if (UseBiasedLocking) { |
|
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934 // The object address from the monitor is in object. |
|
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935 ld(object, BasicObjectLock::obj_offset_in_bytes(), monitor); |
|
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936 assert(oopDesc::mark_offset_in_bytes() == 0, "offset of _mark is not 0"); |
| 14445 | 937 biased_locking_exit(CCR0, object, displaced_header, free_slot); |
|
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938 } |
|
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|
939 |
|
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940 // Test first if we are in the fast recursive case. |
|
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941 ld(displaced_header, BasicObjectLock::lock_offset_in_bytes() + |
|
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942 BasicLock::displaced_header_offset_in_bytes(), monitor); |
|
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943 |
|
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944 // If the displaced header is zero, we have a recursive unlock. |
|
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945 cmpdi(CCR0, displaced_header, 0); |
| 14445 | 946 beq(CCR0, free_slot); // recursive unlock |
|
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947 |
|
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948 // } else if (Atomic::cmpxchg_ptr(displaced_header, obj->mark_addr(), monitor) == monitor) { |
|
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949 // // We swapped the unlocked mark in displaced_header into the object's mark word. |
|
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950 // monitor->set_obj(NULL); |
|
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|
951 |
|
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|
952 // If we still have a lightweight lock, unlock the object and be done. |
|
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|
953 |
|
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|
954 // The object address from the monitor is in object. |
| 17804 | 955 if (!UseBiasedLocking) { ld(object, BasicObjectLock::obj_offset_in_bytes(), monitor); } |
|
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956 addi(object_mark_addr, object, oopDesc::mark_offset_in_bytes()); |
|
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|
957 |
|
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958 // We have the displaced header in displaced_header. If the lock is still |
|
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959 // lightweight, it will contain the monitor address and we'll store the |
|
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|
960 // displaced header back into the object's mark word. |
|
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961 // CmpxchgX sets CCR0 to cmpX(current, monitor). |
|
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962 cmpxchgd(/*flag=*/CCR0, |
|
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963 /*current_value=*/current_header, |
|
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964 /*compare_value=*/monitor, /*exchange_value=*/displaced_header, |
|
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|
965 /*where=*/object_mark_addr, |
| 14445 | 966 MacroAssembler::MemBarRel, |
| 967 MacroAssembler::cmpxchgx_hint_release_lock(), | |
| 968 noreg, | |
| 969 &slow_case); | |
| 970 b(free_slot); | |
|
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|
971 |
|
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|
972 // } else { |
|
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|
973 // // Slow path. |
|
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|
974 // InterpreterRuntime::monitorexit(THREAD, monitor); |
|
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|
975 |
|
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|
976 // The lock has been converted into a heavy lock and hence |
|
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|
977 // we need to get into the slow case. |
|
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|
978 bind(slow_case); |
|
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|
979 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), |
| 14445 | 980 monitor, check_for_exceptions CC_INTERP_ONLY(&& false)); |
|
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981 // } |
|
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982 |
| 14445 | 983 Label done; |
| 984 b(done); // Monitor register may be overwritten! Runtime has already freed the slot. | |
| 985 | |
| 986 // Exchange worked, do monitor->set_obj(NULL); | |
| 987 align(32, 12); | |
| 988 bind(free_slot); | |
| 989 li(R0, 0); | |
| 990 std(R0, BasicObjectLock::obj_offset_in_bytes(), monitor); | |
|
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|
991 bind(done); |
|
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|
992 } |
|
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|
993 } |
|
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|
994 |
| 17804 | 995 #ifndef CC_INTERP |
| 996 | |
| 997 // Load compiled (i2c) or interpreter entry when calling from interpreted and | |
| 998 // do the call. Centralized so that all interpreter calls will do the same actions. | |
| 999 // If jvmti single stepping is on for a thread we must not call compiled code. | |
| 1000 // | |
| 1001 // Input: | |
| 1002 // - Rtarget_method: method to call | |
| 1003 // - Rret_addr: return address | |
| 1004 // - 2 scratch regs | |
| 1005 // | |
| 1006 void InterpreterMacroAssembler::call_from_interpreter(Register Rtarget_method, Register Rret_addr, Register Rscratch1, Register Rscratch2) { | |
| 1007 assert_different_registers(Rscratch1, Rscratch2, Rtarget_method, Rret_addr); | |
| 1008 // Assume we want to go compiled if available. | |
| 1009 const Register Rtarget_addr = Rscratch1; | |
| 1010 const Register Rinterp_only = Rscratch2; | |
| 1011 | |
| 1012 ld(Rtarget_addr, in_bytes(Method::from_interpreted_offset()), Rtarget_method); | |
| 1013 | |
| 1014 if (JvmtiExport::can_post_interpreter_events()) { | |
| 1015 lwz(Rinterp_only, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); | |
| 1016 | |
| 1017 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
| 1018 // compiled code in threads for which the event is enabled. Check here for | |
| 1019 // interp_only_mode if these events CAN be enabled. | |
| 1020 Label done; | |
| 1021 verify_thread(); | |
| 1022 cmpwi(CCR0, Rinterp_only, 0); | |
| 1023 beq(CCR0, done); | |
| 1024 ld(Rtarget_addr, in_bytes(Method::interpreter_entry_offset()), Rtarget_method); | |
| 1025 align(32, 12); | |
| 1026 bind(done); | |
| 1027 } | |
| 1028 | |
| 1029 #ifdef ASSERT | |
| 1030 { | |
| 1031 Label Lok; | |
| 1032 cmpdi(CCR0, Rtarget_addr, 0); | |
| 1033 bne(CCR0, Lok); | |
| 1034 stop("null entry point"); | |
| 1035 bind(Lok); | |
| 1036 } | |
| 1037 #endif // ASSERT | |
| 1038 | |
| 1039 mr(R21_sender_SP, R1_SP); | |
| 1040 | |
| 1041 // Calc a precise SP for the call. The SP value we calculated in | |
| 1042 // generate_fixed_frame() is based on the max_stack() value, so we would waste stack space | |
| 1043 // if esp is not max. Also, the i2c adapter extends the stack space without restoring | |
| 1044 // our pre-calced value, so repeating calls via i2c would result in stack overflow. | |
| 1045 // Since esp already points to an empty slot, we just have to sub 1 additional slot | |
| 1046 // to meet the abi scratch requirements. | |
| 1047 // The max_stack pointer will get restored by means of the GR_Lmax_stack local in | |
| 1048 // the return entry of the interpreter. | |
| 1049 addi(Rscratch2, R15_esp, Interpreter::stackElementSize - frame::abi_reg_args_size); | |
| 1050 clrrdi(Rscratch2, Rscratch2, exact_log2(frame::alignment_in_bytes)); // round towards smaller address | |
| 1051 resize_frame_absolute(Rscratch2, Rscratch2, R0); | |
| 1052 | |
| 1053 mr_if_needed(R19_method, Rtarget_method); | |
| 1054 mtctr(Rtarget_addr); | |
| 1055 mtlr(Rret_addr); | |
| 1056 | |
| 1057 save_interpreter_state(Rscratch2); | |
| 1058 #ifdef ASSERT | |
| 1059 ld(Rscratch1, _ijava_state_neg(top_frame_sp), Rscratch2); // Rscratch2 contains fp | |
| 1060 cmpd(CCR0, R21_sender_SP, Rscratch1); | |
| 1061 asm_assert_eq("top_frame_sp incorrect", 0x951); | |
| 1062 #endif | |
| 1063 | |
| 1064 bctr(); | |
| 1065 } | |
| 1066 | |
| 1067 // Set the method data pointer for the current bcp. | |
| 1068 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
| 1069 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1070 Label get_continue; | |
| 1071 ld(R28_mdx, in_bytes(Method::method_data_offset()), R19_method); | |
| 1072 test_method_data_pointer(get_continue); | |
| 1073 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), R19_method, R14_bcp); | |
| 1074 | |
| 1075 addi(R28_mdx, R28_mdx, in_bytes(MethodData::data_offset())); | |
| 1076 add(R28_mdx, R28_mdx, R3_RET); | |
| 1077 bind(get_continue); | |
| 1078 } | |
| 1079 | |
| 1080 // Test ImethodDataPtr. If it is null, continue at the specified label. | |
| 1081 void InterpreterMacroAssembler::test_method_data_pointer(Label& zero_continue) { | |
| 1082 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1083 cmpdi(CCR0, R28_mdx, 0); | |
| 1084 beq(CCR0, zero_continue); | |
| 1085 } | |
| 1086 | |
| 1087 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
| 1088 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1089 #ifdef ASSERT | |
| 1090 Label verify_continue; | |
| 1091 test_method_data_pointer(verify_continue); | |
| 1092 | |
| 1093 // If the mdp is valid, it will point to a DataLayout header which is | |
| 1094 // consistent with the bcp. The converse is highly probable also. | |
| 1095 lhz(R11_scratch1, in_bytes(DataLayout::bci_offset()), R28_mdx); | |
| 1096 ld(R12_scratch2, in_bytes(Method::const_offset()), R19_method); | |
| 1097 addi(R11_scratch1, R11_scratch1, in_bytes(ConstMethod::codes_offset())); | |
| 1098 add(R11_scratch1, R12_scratch2, R12_scratch2); | |
| 1099 cmpd(CCR0, R11_scratch1, R14_bcp); | |
| 1100 beq(CCR0, verify_continue); | |
| 1101 | |
| 1102 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp ), R19_method, R14_bcp, R28_mdx); | |
| 1103 | |
| 1104 bind(verify_continue); | |
| 1105 #endif | |
| 1106 } | |
| 1107 | |
| 1108 void InterpreterMacroAssembler::test_invocation_counter_for_mdp(Register invocation_count, | |
| 1109 Register Rscratch, | |
| 1110 Label &profile_continue) { | |
| 1111 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1112 // Control will flow to "profile_continue" if the counter is less than the | |
| 1113 // limit or if we call profile_method(). | |
| 1114 Label done; | |
| 1115 | |
| 1116 // If no method data exists, and the counter is high enough, make one. | |
| 1117 int ipl_offs = load_const_optimized(Rscratch, &InvocationCounter::InterpreterProfileLimit, R0, true); | |
| 1118 lwz(Rscratch, ipl_offs, Rscratch); | |
| 1119 | |
| 1120 cmpdi(CCR0, R28_mdx, 0); | |
| 1121 // Test to see if we should create a method data oop. | |
| 1122 cmpd(CCR1, Rscratch /* InterpreterProfileLimit */, invocation_count); | |
| 1123 bne(CCR0, done); | |
| 1124 bge(CCR1, profile_continue); | |
| 1125 | |
| 1126 // Build it now. | |
| 1127 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); | |
| 1128 set_method_data_pointer_for_bcp(); | |
| 1129 b(profile_continue); | |
| 1130 | |
| 1131 align(32, 12); | |
| 1132 bind(done); | |
| 1133 } | |
| 1134 | |
| 1135 void InterpreterMacroAssembler::test_backedge_count_for_osr(Register backedge_count, Register branch_bcp, Register Rtmp) { | |
| 1136 assert_different_registers(backedge_count, Rtmp, branch_bcp); | |
| 1137 assert(UseOnStackReplacement,"Must UseOnStackReplacement to test_backedge_count_for_osr"); | |
| 1138 | |
| 1139 Label did_not_overflow; | |
| 1140 Label overflow_with_error; | |
| 1141 | |
| 1142 int ibbl_offs = load_const_optimized(Rtmp, &InvocationCounter::InterpreterBackwardBranchLimit, R0, true); | |
| 1143 lwz(Rtmp, ibbl_offs, Rtmp); | |
| 1144 cmpw(CCR0, backedge_count, Rtmp); | |
| 1145 | |
| 1146 blt(CCR0, did_not_overflow); | |
| 1147 | |
| 1148 // When ProfileInterpreter is on, the backedge_count comes from the | |
| 1149 // methodDataOop, which value does not get reset on the call to | |
| 1150 // frequency_counter_overflow(). To avoid excessive calls to the overflow | |
| 1151 // routine while the method is being compiled, add a second test to make sure | |
| 1152 // the overflow function is called only once every overflow_frequency. | |
| 1153 if (ProfileInterpreter) { | |
| 1154 const int overflow_frequency = 1024; | |
| 1155 li(Rtmp, overflow_frequency-1); | |
| 1156 andr(Rtmp, Rtmp, backedge_count); | |
| 1157 cmpwi(CCR0, Rtmp, 0); | |
| 1158 bne(CCR0, did_not_overflow); | |
| 1159 } | |
| 1160 | |
| 1161 // Overflow in loop, pass branch bytecode. | |
| 1162 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), branch_bcp, true); | |
| 1163 | |
| 1164 // Was an OSR adapter generated? | |
| 1165 // O0 = osr nmethod | |
| 1166 cmpdi(CCR0, R3_RET, 0); | |
| 1167 beq(CCR0, overflow_with_error); | |
| 1168 | |
| 1169 // Has the nmethod been invalidated already? | |
| 1170 lwz(Rtmp, nmethod::entry_bci_offset(), R3_RET); | |
| 1171 cmpwi(CCR0, Rtmp, InvalidOSREntryBci); | |
| 1172 beq(CCR0, overflow_with_error); | |
| 1173 | |
| 1174 // Migrate the interpreter frame off of the stack. | |
| 1175 // We can use all registers because we will not return to interpreter from this point. | |
| 1176 | |
| 1177 // Save nmethod. | |
| 1178 const Register osr_nmethod = R31; | |
| 1179 mr(osr_nmethod, R3_RET); | |
| 1180 set_top_ijava_frame_at_SP_as_last_Java_frame(R1_SP, R11_scratch1); | |
| 1181 call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin), R16_thread); | |
| 1182 reset_last_Java_frame(); | |
| 1183 // OSR buffer is in ARG1 | |
| 1184 | |
| 1185 // Remove the interpreter frame. | |
| 1186 merge_frames(/*top_frame_sp*/ R21_sender_SP, /*return_pc*/ R0, R11_scratch1, R12_scratch2); | |
| 1187 | |
| 1188 // Jump to the osr code. | |
| 1189 ld(R11_scratch1, nmethod::osr_entry_point_offset(), osr_nmethod); | |
| 1190 mtlr(R0); | |
| 1191 mtctr(R11_scratch1); | |
| 1192 bctr(); | |
| 1193 | |
| 1194 align(32, 12); | |
| 1195 bind(overflow_with_error); | |
| 1196 bind(did_not_overflow); | |
| 1197 } | |
| 1198 | |
| 1199 // Store a value at some constant offset from the method data pointer. | |
| 1200 void InterpreterMacroAssembler::set_mdp_data_at(int constant, Register value) { | |
| 1201 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1202 | |
| 1203 std(value, constant, R28_mdx); | |
| 1204 } | |
| 1205 | |
| 1206 // Increment the value at some constant offset from the method data pointer. | |
| 1207 void InterpreterMacroAssembler::increment_mdp_data_at(int constant, | |
| 1208 Register counter_addr, | |
| 1209 Register Rbumped_count, | |
| 1210 bool decrement) { | |
| 1211 // Locate the counter at a fixed offset from the mdp: | |
| 1212 addi(counter_addr, R28_mdx, constant); | |
| 1213 increment_mdp_data_at(counter_addr, Rbumped_count, decrement); | |
| 1214 } | |
| 1215 | |
| 1216 // Increment the value at some non-fixed (reg + constant) offset from | |
| 1217 // the method data pointer. | |
| 1218 void InterpreterMacroAssembler::increment_mdp_data_at(Register reg, | |
| 1219 int constant, | |
| 1220 Register scratch, | |
| 1221 Register Rbumped_count, | |
| 1222 bool decrement) { | |
| 1223 // Add the constant to reg to get the offset. | |
| 1224 add(scratch, R28_mdx, reg); | |
| 1225 // Then calculate the counter address. | |
| 1226 addi(scratch, scratch, constant); | |
| 1227 increment_mdp_data_at(scratch, Rbumped_count, decrement); | |
| 1228 } | |
| 1229 | |
| 1230 void InterpreterMacroAssembler::increment_mdp_data_at(Register counter_addr, | |
| 1231 Register Rbumped_count, | |
| 1232 bool decrement) { | |
| 1233 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1234 | |
| 1235 // Load the counter. | |
| 1236 ld(Rbumped_count, 0, counter_addr); | |
| 1237 | |
| 1238 if (decrement) { | |
| 1239 // Decrement the register. Set condition codes. | |
| 1240 addi(Rbumped_count, Rbumped_count, - DataLayout::counter_increment); | |
| 1241 // Store the decremented counter, if it is still negative. | |
| 1242 std(Rbumped_count, 0, counter_addr); | |
| 1243 // Note: add/sub overflow check are not ported, since 64 bit | |
| 1244 // calculation should never overflow. | |
| 1245 } else { | |
| 1246 // Increment the register. Set carry flag. | |
| 1247 addi(Rbumped_count, Rbumped_count, DataLayout::counter_increment); | |
| 1248 // Store the incremented counter. | |
| 1249 std(Rbumped_count, 0, counter_addr); | |
| 1250 } | |
| 1251 } | |
| 1252 | |
| 1253 // Set a flag value at the current method data pointer position. | |
| 1254 void InterpreterMacroAssembler::set_mdp_flag_at(int flag_constant, | |
| 1255 Register scratch) { | |
| 1256 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1257 // Load the data header. | |
| 1258 lbz(scratch, in_bytes(DataLayout::flags_offset()), R28_mdx); | |
| 1259 // Set the flag. | |
| 1260 ori(scratch, scratch, flag_constant); | |
| 1261 // Store the modified header. | |
| 1262 stb(scratch, in_bytes(DataLayout::flags_offset()), R28_mdx); | |
| 1263 } | |
| 1264 | |
| 1265 // Test the location at some offset from the method data pointer. | |
| 1266 // If it is not equal to value, branch to the not_equal_continue Label. | |
| 1267 void InterpreterMacroAssembler::test_mdp_data_at(int offset, | |
| 1268 Register value, | |
| 1269 Label& not_equal_continue, | |
| 1270 Register test_out) { | |
| 1271 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1272 | |
| 1273 ld(test_out, offset, R28_mdx); | |
| 1274 cmpd(CCR0, value, test_out); | |
| 1275 bne(CCR0, not_equal_continue); | |
| 1276 } | |
| 1277 | |
| 1278 // Update the method data pointer by the displacement located at some fixed | |
| 1279 // offset from the method data pointer. | |
| 1280 void InterpreterMacroAssembler::update_mdp_by_offset(int offset_of_disp, | |
| 1281 Register scratch) { | |
| 1282 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1283 | |
| 1284 ld(scratch, offset_of_disp, R28_mdx); | |
| 1285 add(R28_mdx, scratch, R28_mdx); | |
| 1286 } | |
| 1287 | |
| 1288 // Update the method data pointer by the displacement located at the | |
| 1289 // offset (reg + offset_of_disp). | |
| 1290 void InterpreterMacroAssembler::update_mdp_by_offset(Register reg, | |
| 1291 int offset_of_disp, | |
| 1292 Register scratch) { | |
| 1293 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1294 | |
| 1295 add(scratch, reg, R28_mdx); | |
| 1296 ld(scratch, offset_of_disp, scratch); | |
| 1297 add(R28_mdx, scratch, R28_mdx); | |
| 1298 } | |
| 1299 | |
| 1300 // Update the method data pointer by a simple constant displacement. | |
| 1301 void InterpreterMacroAssembler::update_mdp_by_constant(int constant) { | |
| 1302 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1303 addi(R28_mdx, R28_mdx, constant); | |
| 1304 } | |
| 1305 | |
| 1306 // Update the method data pointer for a _ret bytecode whose target | |
| 1307 // was not among our cached targets. | |
| 1308 void InterpreterMacroAssembler::update_mdp_for_ret(TosState state, | |
| 1309 Register return_bci) { | |
| 1310 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1311 | |
| 1312 push(state); | |
| 1313 assert(return_bci->is_nonvolatile(), "need to protect return_bci"); | |
| 1314 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); | |
| 1315 pop(state); | |
| 1316 } | |
| 1317 | |
| 1318 // Increments the backedge counter. | |
| 1319 // Returns backedge counter + invocation counter in Rdst. | |
| 1320 void InterpreterMacroAssembler::increment_backedge_counter(const Register Rcounters, const Register Rdst, | |
| 1321 const Register Rtmp1, Register Rscratch) { | |
| 1322 assert(UseCompiler, "incrementing must be useful"); | |
| 1323 assert_different_registers(Rdst, Rtmp1); | |
| 1324 const Register invocation_counter = Rtmp1; | |
| 1325 const Register counter = Rdst; | |
| 1326 // TODO ppc port assert(4 == InvocationCounter::sz_counter(), "unexpected field size."); | |
| 1327 | |
| 1328 // Load backedge counter. | |
| 1329 lwz(counter, in_bytes(MethodCounters::backedge_counter_offset()) + | |
| 1330 in_bytes(InvocationCounter::counter_offset()), Rcounters); | |
| 1331 // Load invocation counter. | |
| 1332 lwz(invocation_counter, in_bytes(MethodCounters::invocation_counter_offset()) + | |
| 1333 in_bytes(InvocationCounter::counter_offset()), Rcounters); | |
| 1334 | |
| 1335 // Add the delta to the backedge counter. | |
| 1336 addi(counter, counter, InvocationCounter::count_increment); | |
| 1337 | |
| 1338 // Mask the invocation counter. | |
| 1339 li(Rscratch, InvocationCounter::count_mask_value); | |
| 1340 andr(invocation_counter, invocation_counter, Rscratch); | |
| 1341 | |
| 1342 // Store new counter value. | |
| 1343 stw(counter, in_bytes(MethodCounters::backedge_counter_offset()) + | |
| 1344 in_bytes(InvocationCounter::counter_offset()), Rcounters); | |
| 1345 // Return invocation counter + backedge counter. | |
| 1346 add(counter, counter, invocation_counter); | |
| 1347 } | |
| 1348 | |
| 1349 // Count a taken branch in the bytecodes. | |
| 1350 void InterpreterMacroAssembler::profile_taken_branch(Register scratch, Register bumped_count) { | |
| 1351 if (ProfileInterpreter) { | |
| 1352 Label profile_continue; | |
| 1353 | |
| 1354 // If no method data exists, go to profile_continue. | |
| 1355 test_method_data_pointer(profile_continue); | |
| 1356 | |
| 1357 // We are taking a branch. Increment the taken count. | |
| 1358 increment_mdp_data_at(in_bytes(JumpData::taken_offset()), scratch, bumped_count); | |
| 1359 | |
| 1360 // The method data pointer needs to be updated to reflect the new target. | |
| 1361 update_mdp_by_offset(in_bytes(JumpData::displacement_offset()), scratch); | |
| 1362 bind (profile_continue); | |
| 1363 } | |
| 1364 } | |
| 1365 | |
| 1366 // Count a not-taken branch in the bytecodes. | |
| 1367 void InterpreterMacroAssembler::profile_not_taken_branch(Register scratch1, Register scratch2) { | |
| 1368 if (ProfileInterpreter) { | |
| 1369 Label profile_continue; | |
| 1370 | |
| 1371 // If no method data exists, go to profile_continue. | |
| 1372 test_method_data_pointer(profile_continue); | |
| 1373 | |
| 1374 // We are taking a branch. Increment the not taken count. | |
| 1375 increment_mdp_data_at(in_bytes(BranchData::not_taken_offset()), scratch1, scratch2); | |
| 1376 | |
| 1377 // The method data pointer needs to be updated to correspond to the | |
| 1378 // next bytecode. | |
| 1379 update_mdp_by_constant(in_bytes(BranchData::branch_data_size())); | |
| 1380 bind (profile_continue); | |
| 1381 } | |
| 1382 } | |
| 1383 | |
| 1384 // Count a non-virtual call in the bytecodes. | |
| 1385 void InterpreterMacroAssembler::profile_call(Register scratch1, Register scratch2) { | |
| 1386 if (ProfileInterpreter) { | |
| 1387 Label profile_continue; | |
| 1388 | |
| 1389 // If no method data exists, go to profile_continue. | |
| 1390 test_method_data_pointer(profile_continue); | |
| 1391 | |
| 1392 // We are making a call. Increment the count. | |
| 1393 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
| 1394 | |
| 1395 // The method data pointer needs to be updated to reflect the new target. | |
| 1396 update_mdp_by_constant(in_bytes(CounterData::counter_data_size())); | |
| 1397 bind (profile_continue); | |
| 1398 } | |
| 1399 } | |
| 1400 | |
| 1401 // Count a final call in the bytecodes. | |
| 1402 void InterpreterMacroAssembler::profile_final_call(Register scratch1, Register scratch2) { | |
| 1403 if (ProfileInterpreter) { | |
| 1404 Label profile_continue; | |
| 1405 | |
| 1406 // If no method data exists, go to profile_continue. | |
| 1407 test_method_data_pointer(profile_continue); | |
| 1408 | |
| 1409 // We are making a call. Increment the count. | |
| 1410 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
| 1411 | |
| 1412 // The method data pointer needs to be updated to reflect the new target. | |
| 1413 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); | |
| 1414 bind (profile_continue); | |
| 1415 } | |
| 1416 } | |
| 1417 | |
| 1418 // Count a virtual call in the bytecodes. | |
| 1419 void InterpreterMacroAssembler::profile_virtual_call(Register Rreceiver, | |
| 1420 Register Rscratch1, | |
| 1421 Register Rscratch2, | |
| 1422 bool receiver_can_be_null) { | |
| 1423 if (!ProfileInterpreter) { return; } | |
| 1424 Label profile_continue; | |
| 1425 | |
| 1426 // If no method data exists, go to profile_continue. | |
| 1427 test_method_data_pointer(profile_continue); | |
| 1428 | |
| 1429 Label skip_receiver_profile; | |
| 1430 if (receiver_can_be_null) { | |
| 1431 Label not_null; | |
| 1432 cmpdi(CCR0, Rreceiver, 0); | |
| 1433 bne(CCR0, not_null); | |
| 1434 // We are making a call. Increment the count for null receiver. | |
| 1435 increment_mdp_data_at(in_bytes(CounterData::count_offset()), Rscratch1, Rscratch2); | |
| 1436 b(skip_receiver_profile); | |
| 1437 bind(not_null); | |
| 1438 } | |
| 1439 | |
| 1440 // Record the receiver type. | |
| 1441 record_klass_in_profile(Rreceiver, Rscratch1, Rscratch2, true); | |
| 1442 bind(skip_receiver_profile); | |
| 1443 | |
| 1444 // The method data pointer needs to be updated to reflect the new target. | |
| 1445 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); | |
| 1446 bind (profile_continue); | |
| 1447 } | |
| 1448 | |
| 1449 void InterpreterMacroAssembler::profile_typecheck(Register Rklass, Register Rscratch1, Register Rscratch2) { | |
| 1450 if (ProfileInterpreter) { | |
| 1451 Label profile_continue; | |
| 1452 | |
| 1453 // If no method data exists, go to profile_continue. | |
| 1454 test_method_data_pointer(profile_continue); | |
| 1455 | |
| 1456 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1457 if (TypeProfileCasts) { | |
| 1458 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1459 | |
| 1460 // Record the object type. | |
| 1461 record_klass_in_profile(Rklass, Rscratch1, Rscratch2, false); | |
| 1462 } | |
| 1463 | |
| 1464 // The method data pointer needs to be updated. | |
| 1465 update_mdp_by_constant(mdp_delta); | |
| 1466 | |
| 1467 bind (profile_continue); | |
| 1468 } | |
| 1469 } | |
| 1470 | |
| 1471 void InterpreterMacroAssembler::profile_typecheck_failed(Register Rscratch1, Register Rscratch2) { | |
| 1472 if (ProfileInterpreter && TypeProfileCasts) { | |
| 1473 Label profile_continue; | |
| 1474 | |
| 1475 // If no method data exists, go to profile_continue. | |
| 1476 test_method_data_pointer(profile_continue); | |
| 1477 | |
| 1478 int count_offset = in_bytes(CounterData::count_offset()); | |
| 1479 // Back up the address, since we have already bumped the mdp. | |
| 1480 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1481 | |
| 1482 // *Decrement* the counter. We expect to see zero or small negatives. | |
| 1483 increment_mdp_data_at(count_offset, Rscratch1, Rscratch2, true); | |
| 1484 | |
| 1485 bind (profile_continue); | |
| 1486 } | |
| 1487 } | |
| 1488 | |
| 1489 // Count a ret in the bytecodes. | |
| 1490 void InterpreterMacroAssembler::profile_ret(TosState state, Register return_bci, Register scratch1, Register scratch2) { | |
| 1491 if (ProfileInterpreter) { | |
| 1492 Label profile_continue; | |
| 1493 uint row; | |
| 1494 | |
| 1495 // If no method data exists, go to profile_continue. | |
| 1496 test_method_data_pointer(profile_continue); | |
| 1497 | |
| 1498 // Update the total ret count. | |
| 1499 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2 ); | |
| 1500 | |
| 1501 for (row = 0; row < RetData::row_limit(); row++) { | |
| 1502 Label next_test; | |
| 1503 | |
| 1504 // See if return_bci is equal to bci[n]: | |
| 1505 test_mdp_data_at(in_bytes(RetData::bci_offset(row)), return_bci, next_test, scratch1); | |
| 1506 | |
| 1507 // return_bci is equal to bci[n]. Increment the count. | |
| 1508 increment_mdp_data_at(in_bytes(RetData::bci_count_offset(row)), scratch1, scratch2); | |
| 1509 | |
| 1510 // The method data pointer needs to be updated to reflect the new target. | |
| 1511 update_mdp_by_offset(in_bytes(RetData::bci_displacement_offset(row)), scratch1); | |
| 1512 b(profile_continue); | |
| 1513 bind(next_test); | |
| 1514 } | |
| 1515 | |
| 1516 update_mdp_for_ret(state, return_bci); | |
| 1517 | |
| 1518 bind (profile_continue); | |
| 1519 } | |
| 1520 } | |
| 1521 | |
| 1522 // Count the default case of a switch construct. | |
| 1523 void InterpreterMacroAssembler::profile_switch_default(Register scratch1, Register scratch2) { | |
| 1524 if (ProfileInterpreter) { | |
| 1525 Label profile_continue; | |
| 1526 | |
| 1527 // If no method data exists, go to profile_continue. | |
| 1528 test_method_data_pointer(profile_continue); | |
| 1529 | |
| 1530 // Update the default case count | |
| 1531 increment_mdp_data_at(in_bytes(MultiBranchData::default_count_offset()), | |
| 1532 scratch1, scratch2); | |
| 1533 | |
| 1534 // The method data pointer needs to be updated. | |
| 1535 update_mdp_by_offset(in_bytes(MultiBranchData::default_displacement_offset()), | |
| 1536 scratch1); | |
| 1537 | |
| 1538 bind (profile_continue); | |
| 1539 } | |
| 1540 } | |
| 1541 | |
| 1542 // Count the index'th case of a switch construct. | |
| 1543 void InterpreterMacroAssembler::profile_switch_case(Register index, | |
| 1544 Register scratch1, | |
| 1545 Register scratch2, | |
| 1546 Register scratch3) { | |
| 1547 if (ProfileInterpreter) { | |
| 1548 assert_different_registers(index, scratch1, scratch2, scratch3); | |
| 1549 Label profile_continue; | |
| 1550 | |
| 1551 // If no method data exists, go to profile_continue. | |
| 1552 test_method_data_pointer(profile_continue); | |
| 1553 | |
| 1554 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes(). | |
| 1555 li(scratch3, in_bytes(MultiBranchData::case_array_offset())); | |
| 1556 | |
| 1557 assert (in_bytes(MultiBranchData::per_case_size()) == 16, "so that shladd works"); | |
| 1558 sldi(scratch1, index, exact_log2(in_bytes(MultiBranchData::per_case_size()))); | |
| 1559 add(scratch1, scratch1, scratch3); | |
| 1560 | |
| 1561 // Update the case count. | |
| 1562 increment_mdp_data_at(scratch1, in_bytes(MultiBranchData::relative_count_offset()), scratch2, scratch3); | |
| 1563 | |
| 1564 // The method data pointer needs to be updated. | |
| 1565 update_mdp_by_offset(scratch1, in_bytes(MultiBranchData::relative_displacement_offset()), scratch2); | |
| 1566 | |
| 1567 bind (profile_continue); | |
| 1568 } | |
| 1569 } | |
| 1570 | |
| 1571 void InterpreterMacroAssembler::profile_null_seen(Register Rscratch1, Register Rscratch2) { | |
| 1572 if (ProfileInterpreter) { | |
| 1573 assert_different_registers(Rscratch1, Rscratch2); | |
| 1574 Label profile_continue; | |
| 1575 | |
| 1576 // If no method data exists, go to profile_continue. | |
| 1577 test_method_data_pointer(profile_continue); | |
| 1578 | |
| 1579 set_mdp_flag_at(BitData::null_seen_byte_constant(), Rscratch1); | |
| 1580 | |
| 1581 // The method data pointer needs to be updated. | |
| 1582 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1583 if (TypeProfileCasts) { | |
| 1584 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1585 } | |
| 1586 update_mdp_by_constant(mdp_delta); | |
| 1587 | |
| 1588 bind (profile_continue); | |
| 1589 } | |
| 1590 } | |
| 1591 | |
| 1592 void InterpreterMacroAssembler::record_klass_in_profile(Register Rreceiver, | |
| 1593 Register Rscratch1, Register Rscratch2, | |
| 1594 bool is_virtual_call) { | |
| 1595 assert(ProfileInterpreter, "must be profiling"); | |
| 1596 assert_different_registers(Rreceiver, Rscratch1, Rscratch2); | |
| 1597 | |
| 1598 Label done; | |
| 1599 record_klass_in_profile_helper(Rreceiver, Rscratch1, Rscratch2, 0, done, is_virtual_call); | |
| 1600 bind (done); | |
| 1601 } | |
| 1602 | |
| 1603 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
| 1604 Register receiver, Register scratch1, Register scratch2, | |
| 1605 int start_row, Label& done, bool is_virtual_call) { | |
| 1606 if (TypeProfileWidth == 0) { | |
| 1607 if (is_virtual_call) { | |
| 1608 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
| 1609 } | |
| 1610 return; | |
| 1611 } | |
| 1612 | |
| 1613 int last_row = VirtualCallData::row_limit() - 1; | |
| 1614 assert(start_row <= last_row, "must be work left to do"); | |
| 1615 // Test this row for both the receiver and for null. | |
| 1616 // Take any of three different outcomes: | |
| 1617 // 1. found receiver => increment count and goto done | |
| 1618 // 2. found null => keep looking for case 1, maybe allocate this cell | |
| 1619 // 3. found something else => keep looking for cases 1 and 2 | |
| 1620 // Case 3 is handled by a recursive call. | |
| 1621 for (int row = start_row; row <= last_row; row++) { | |
| 1622 Label next_test; | |
| 1623 bool test_for_null_also = (row == start_row); | |
| 1624 | |
| 1625 // See if the receiver is receiver[n]. | |
| 1626 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
| 1627 test_mdp_data_at(recvr_offset, receiver, next_test, scratch1); | |
| 1628 // delayed()->tst(scratch); | |
| 1629 | |
| 1630 // The receiver is receiver[n]. Increment count[n]. | |
| 1631 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
| 1632 increment_mdp_data_at(count_offset, scratch1, scratch2); | |
| 1633 b(done); | |
| 1634 bind(next_test); | |
| 1635 | |
| 1636 if (test_for_null_also) { | |
| 1637 Label found_null; | |
| 1638 // Failed the equality check on receiver[n]... Test for null. | |
| 1639 if (start_row == last_row) { | |
| 1640 // The only thing left to do is handle the null case. | |
| 1641 if (is_virtual_call) { | |
| 1642 // Scratch1 contains test_out from test_mdp_data_at. | |
| 1643 cmpdi(CCR0, scratch1, 0); | |
| 1644 beq(CCR0, found_null); | |
| 1645 // Receiver did not match any saved receiver and there is no empty row for it. | |
| 1646 // Increment total counter to indicate polymorphic case. | |
| 1647 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch1, scratch2); | |
| 1648 b(done); | |
| 1649 bind(found_null); | |
| 1650 } else { | |
| 1651 cmpdi(CCR0, scratch1, 0); | |
| 1652 bne(CCR0, done); | |
| 1653 } | |
| 1654 break; | |
| 1655 } | |
| 1656 // Since null is rare, make it be the branch-taken case. | |
| 1657 cmpdi(CCR0, scratch1, 0); | |
| 1658 beq(CCR0, found_null); | |
| 1659 | |
| 1660 // Put all the "Case 3" tests here. | |
| 1661 record_klass_in_profile_helper(receiver, scratch1, scratch2, start_row + 1, done, is_virtual_call); | |
| 1662 | |
| 1663 // Found a null. Keep searching for a matching receiver, | |
| 1664 // but remember that this is an empty (unused) slot. | |
| 1665 bind(found_null); | |
| 1666 } | |
| 1667 } | |
| 1668 | |
| 1669 // In the fall-through case, we found no matching receiver, but we | |
| 1670 // observed the receiver[start_row] is NULL. | |
| 1671 | |
| 1672 // Fill in the receiver field and increment the count. | |
| 1673 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
| 1674 set_mdp_data_at(recvr_offset, receiver); | |
| 1675 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
| 1676 li(scratch1, DataLayout::counter_increment); | |
| 1677 set_mdp_data_at(count_offset, scratch1); | |
| 1678 if (start_row > 0) { | |
| 1679 b(done); | |
| 1680 } | |
| 1681 } | |
| 1682 | |
| 1683 // Add a InterpMonitorElem to stack (see frame_sparc.hpp). | |
| 1684 void InterpreterMacroAssembler::add_monitor_to_stack(bool stack_is_empty, Register Rtemp1, Register Rtemp2) { | |
| 1685 | |
| 1686 // Very-local scratch registers. | |
| 1687 const Register esp = Rtemp1; | |
| 1688 const Register slot = Rtemp2; | |
| 1689 | |
| 1690 // Extracted monitor_size. | |
| 1691 int monitor_size = frame::interpreter_frame_monitor_size_in_bytes(); | |
| 1692 assert(Assembler::is_aligned((unsigned int)monitor_size, | |
| 1693 (unsigned int)frame::alignment_in_bytes), | |
| 1694 "size of a monitor must respect alignment of SP"); | |
| 1695 | |
| 1696 resize_frame(-monitor_size, /*temp*/esp); // Allocate space for new monitor | |
| 1697 std(R1_SP, _ijava_state_neg(top_frame_sp), esp); // esp contains fp | |
| 1698 | |
| 1699 // Shuffle expression stack down. Recall that stack_base points | |
| 1700 // just above the new expression stack bottom. Old_tos and new_tos | |
| 1701 // are used to scan thru the old and new expression stacks. | |
| 1702 if (!stack_is_empty) { | |
| 1703 Label copy_slot, copy_slot_finished; | |
| 1704 const Register n_slots = slot; | |
| 1705 | |
| 1706 addi(esp, R15_esp, Interpreter::stackElementSize); // Point to first element (pre-pushed stack). | |
| 1707 subf(n_slots, esp, R26_monitor); | |
| 1708 srdi_(n_slots, n_slots, LogBytesPerWord); // Compute number of slots to copy. | |
| 1709 assert(LogBytesPerWord == 3, "conflicts assembler instructions"); | |
| 1710 beq(CCR0, copy_slot_finished); // Nothing to copy. | |
| 1711 | |
| 1712 mtctr(n_slots); | |
| 1713 | |
| 1714 // loop | |
| 1715 bind(copy_slot); | |
| 1716 ld(slot, 0, esp); // Move expression stack down. | |
| 1717 std(slot, -monitor_size, esp); // distance = monitor_size | |
| 1718 addi(esp, esp, BytesPerWord); | |
| 1719 bdnz(copy_slot); | |
| 1720 | |
| 1721 bind(copy_slot_finished); | |
| 1722 } | |
| 1723 | |
| 1724 addi(R15_esp, R15_esp, -monitor_size); | |
| 1725 addi(R26_monitor, R26_monitor, -monitor_size); | |
| 1726 | |
| 1727 // Restart interpreter | |
| 1728 } | |
| 1729 | |
| 1730 // ============================================================================ | |
| 1731 // Java locals access | |
| 1732 | |
| 1733 // Load a local variable at index in Rindex into register Rdst_value. | |
| 1734 // Also puts address of local into Rdst_address as a service. | |
| 1735 // Kills: | |
| 1736 // - Rdst_value | |
| 1737 // - Rdst_address | |
| 1738 void InterpreterMacroAssembler::load_local_int(Register Rdst_value, Register Rdst_address, Register Rindex) { | |
| 1739 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 1740 subf(Rdst_address, Rdst_address, R18_locals); | |
| 1741 lwz(Rdst_value, 0, Rdst_address); | |
| 1742 } | |
| 1743 | |
| 1744 // Load a local variable at index in Rindex into register Rdst_value. | |
| 1745 // Also puts address of local into Rdst_address as a service. | |
| 1746 // Kills: | |
| 1747 // - Rdst_value | |
| 1748 // - Rdst_address | |
| 1749 void InterpreterMacroAssembler::load_local_long(Register Rdst_value, Register Rdst_address, Register Rindex) { | |
| 1750 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 1751 subf(Rdst_address, Rdst_address, R18_locals); | |
| 1752 ld(Rdst_value, -8, Rdst_address); | |
| 1753 } | |
| 1754 | |
| 1755 // Load a local variable at index in Rindex into register Rdst_value. | |
| 1756 // Also puts address of local into Rdst_address as a service. | |
| 1757 // Input: | |
| 1758 // - Rindex: slot nr of local variable | |
| 1759 // Kills: | |
| 1760 // - Rdst_value | |
| 1761 // - Rdst_address | |
| 1762 void InterpreterMacroAssembler::load_local_ptr(Register Rdst_value, Register Rdst_address, Register Rindex) { | |
| 1763 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 1764 subf(Rdst_address, Rdst_address, R18_locals); | |
| 1765 ld(Rdst_value, 0, Rdst_address); | |
| 1766 } | |
| 1767 | |
| 1768 // Load a local variable at index in Rindex into register Rdst_value. | |
| 1769 // Also puts address of local into Rdst_address as a service. | |
| 1770 // Kills: | |
| 1771 // - Rdst_value | |
| 1772 // - Rdst_address | |
| 1773 void InterpreterMacroAssembler::load_local_float(FloatRegister Rdst_value, Register Rdst_address, Register Rindex) { | |
| 1774 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 1775 subf(Rdst_address, Rdst_address, R18_locals); | |
| 1776 lfs(Rdst_value, 0, Rdst_address); | |
| 1777 } | |
| 1778 | |
| 1779 // Load a local variable at index in Rindex into register Rdst_value. | |
| 1780 // Also puts address of local into Rdst_address as a service. | |
| 1781 // Kills: | |
| 1782 // - Rdst_value | |
| 1783 // - Rdst_address | |
| 1784 void InterpreterMacroAssembler::load_local_double(FloatRegister Rdst_value, Register Rdst_address, Register Rindex) { | |
| 1785 sldi(Rdst_address, Rindex, Interpreter::logStackElementSize); | |
| 1786 subf(Rdst_address, Rdst_address, R18_locals); | |
| 1787 lfd(Rdst_value, -8, Rdst_address); | |
| 1788 } | |
| 1789 | |
| 1790 // Store an int value at local variable slot Rindex. | |
| 1791 // Kills: | |
| 1792 // - Rindex | |
| 1793 void InterpreterMacroAssembler::store_local_int(Register Rvalue, Register Rindex) { | |
| 1794 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 1795 subf(Rindex, Rindex, R18_locals); | |
| 1796 stw(Rvalue, 0, Rindex); | |
| 1797 } | |
| 1798 | |
| 1799 // Store a long value at local variable slot Rindex. | |
| 1800 // Kills: | |
| 1801 // - Rindex | |
| 1802 void InterpreterMacroAssembler::store_local_long(Register Rvalue, Register Rindex) { | |
| 1803 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 1804 subf(Rindex, Rindex, R18_locals); | |
| 1805 std(Rvalue, -8, Rindex); | |
| 1806 } | |
| 1807 | |
| 1808 // Store an oop value at local variable slot Rindex. | |
| 1809 // Kills: | |
| 1810 // - Rindex | |
| 1811 void InterpreterMacroAssembler::store_local_ptr(Register Rvalue, Register Rindex) { | |
| 1812 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 1813 subf(Rindex, Rindex, R18_locals); | |
| 1814 std(Rvalue, 0, Rindex); | |
| 1815 } | |
| 1816 | |
| 1817 // Store an int value at local variable slot Rindex. | |
| 1818 // Kills: | |
| 1819 // - Rindex | |
| 1820 void InterpreterMacroAssembler::store_local_float(FloatRegister Rvalue, Register Rindex) { | |
| 1821 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 1822 subf(Rindex, Rindex, R18_locals); | |
| 1823 stfs(Rvalue, 0, Rindex); | |
| 1824 } | |
| 1825 | |
| 1826 // Store an int value at local variable slot Rindex. | |
| 1827 // Kills: | |
| 1828 // - Rindex | |
| 1829 void InterpreterMacroAssembler::store_local_double(FloatRegister Rvalue, Register Rindex) { | |
| 1830 sldi(Rindex, Rindex, Interpreter::logStackElementSize); | |
| 1831 subf(Rindex, Rindex, R18_locals); | |
| 1832 stfd(Rvalue, -8, Rindex); | |
| 1833 } | |
| 1834 | |
| 1835 // Read pending exception from thread and jump to interpreter. | |
| 1836 // Throw exception entry if one if pending. Fall through otherwise. | |
| 1837 void InterpreterMacroAssembler::check_and_forward_exception(Register Rscratch1, Register Rscratch2) { | |
| 1838 assert_different_registers(Rscratch1, Rscratch2, R3); | |
| 1839 Register Rexception = Rscratch1; | |
| 1840 Register Rtmp = Rscratch2; | |
| 1841 Label Ldone; | |
| 1842 // Get pending exception oop. | |
| 1843 ld(Rexception, thread_(pending_exception)); | |
| 1844 cmpdi(CCR0, Rexception, 0); | |
| 1845 beq(CCR0, Ldone); | |
| 1846 li(Rtmp, 0); | |
| 1847 mr_if_needed(R3, Rexception); | |
| 1848 std(Rtmp, thread_(pending_exception)); // Clear exception in thread | |
| 1849 if (Interpreter::rethrow_exception_entry() != NULL) { | |
| 1850 // Already got entry address. | |
| 1851 load_dispatch_table(Rtmp, (address*)Interpreter::rethrow_exception_entry()); | |
| 1852 } else { | |
| 1853 // Dynamically load entry address. | |
| 1854 int simm16_rest = load_const_optimized(Rtmp, &Interpreter::_rethrow_exception_entry, R0, true); | |
| 1855 ld(Rtmp, simm16_rest, Rtmp); | |
| 1856 } | |
| 1857 mtctr(Rtmp); | |
| 1858 save_interpreter_state(Rtmp); | |
| 1859 bctr(); | |
| 1860 | |
| 1861 align(32, 12); | |
| 1862 bind(Ldone); | |
| 1863 } | |
| 1864 | |
| 1865 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, bool check_exceptions) { | |
| 1866 save_interpreter_state(R11_scratch1); | |
| 1867 | |
| 1868 MacroAssembler::call_VM(oop_result, entry_point, false); | |
| 1869 | |
| 1870 restore_interpreter_state(R11_scratch1, /*bcp_and_mdx_only*/ true); | |
| 1871 | |
| 1872 check_and_handle_popframe(R11_scratch1); | |
| 1873 check_and_handle_earlyret(R11_scratch1); | |
| 1874 // Now check exceptions manually. | |
| 1875 if (check_exceptions) { | |
| 1876 check_and_forward_exception(R11_scratch1, R12_scratch2); | |
| 1877 } | |
| 1878 } | |
| 1879 | |
| 1880 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, bool check_exceptions) { | |
| 1881 // ARG1 is reserved for the thread. | |
| 1882 mr_if_needed(R4_ARG2, arg_1); | |
| 1883 call_VM(oop_result, entry_point, check_exceptions); | |
| 1884 } | |
| 1885 | |
| 1886 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, bool check_exceptions) { | |
| 1887 // ARG1 is reserved for the thread. | |
| 1888 mr_if_needed(R4_ARG2, arg_1); | |
| 1889 assert(arg_2 != R4_ARG2, "smashed argument"); | |
| 1890 mr_if_needed(R5_ARG3, arg_2); | |
| 1891 call_VM(oop_result, entry_point, check_exceptions); | |
| 1892 } | |
| 1893 | |
| 1894 void InterpreterMacroAssembler::call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, Register arg_3, bool check_exceptions) { | |
| 1895 // ARG1 is reserved for the thread. | |
| 1896 mr_if_needed(R4_ARG2, arg_1); | |
| 1897 assert(arg_2 != R4_ARG2, "smashed argument"); | |
| 1898 mr_if_needed(R5_ARG3, arg_2); | |
| 1899 assert(arg_3 != R4_ARG2 && arg_3 != R5_ARG3, "smashed argument"); | |
| 1900 mr_if_needed(R6_ARG4, arg_3); | |
| 1901 call_VM(oop_result, entry_point, check_exceptions); | |
| 1902 } | |
| 1903 | |
| 1904 void InterpreterMacroAssembler::save_interpreter_state(Register scratch) { | |
| 1905 ld(scratch, 0, R1_SP); | |
| 1906 std(R15_esp, _ijava_state_neg(esp), scratch); | |
| 1907 std(R14_bcp, _ijava_state_neg(bcp), scratch); | |
| 1908 std(R26_monitor, _ijava_state_neg(monitors), scratch); | |
| 1909 if (ProfileInterpreter) { std(R28_mdx, _ijava_state_neg(mdx), scratch); } | |
| 1910 // Other entries should be unchanged. | |
| 1911 } | |
| 1912 | |
| 1913 void InterpreterMacroAssembler::restore_interpreter_state(Register scratch, bool bcp_and_mdx_only) { | |
| 1914 ld(scratch, 0, R1_SP); | |
| 1915 ld(R14_bcp, _ijava_state_neg(bcp), scratch); // Changed by VM code (exception). | |
| 1916 if (ProfileInterpreter) { ld(R28_mdx, _ijava_state_neg(mdx), scratch); } // Changed by VM code. | |
| 1917 if (!bcp_and_mdx_only) { | |
| 1918 // Following ones are Metadata. | |
| 1919 ld(R19_method, _ijava_state_neg(method), scratch); | |
| 1920 ld(R27_constPoolCache, _ijava_state_neg(cpoolCache), scratch); | |
| 1921 // Following ones are stack addresses and don't require reload. | |
| 1922 ld(R15_esp, _ijava_state_neg(esp), scratch); | |
| 1923 ld(R18_locals, _ijava_state_neg(locals), scratch); | |
| 1924 ld(R26_monitor, _ijava_state_neg(monitors), scratch); | |
| 1925 } | |
| 1926 #ifdef ASSERT | |
| 1927 { | |
| 1928 Label Lok; | |
| 1929 subf(R0, R1_SP, scratch); | |
| 1930 cmpdi(CCR0, R0, frame::abi_reg_args_size + frame::ijava_state_size); | |
| 1931 bge(CCR0, Lok); | |
| 1932 stop("frame too small (restore istate)", 0x5432); | |
| 1933 bind(Lok); | |
| 1934 } | |
| 1935 { | |
| 1936 Label Lok; | |
| 1937 ld(R0, _ijava_state_neg(ijava_reserved), scratch); | |
| 1938 cmpdi(CCR0, R0, 0x5afe); | |
| 1939 beq(CCR0, Lok); | |
| 1940 stop("frame corrupted (restore istate)", 0x5afe); | |
| 1941 bind(Lok); | |
| 1942 } | |
| 1943 #endif | |
| 1944 } | |
| 1945 | |
| 1946 #endif // !CC_INTERP | |
| 1947 | |
|
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1948 void InterpreterMacroAssembler::get_method_counters(Register method, |
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1949 Register Rcounters, |
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1950 Label& skip) { |
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1951 BLOCK_COMMENT("Load and ev. allocate counter object {"); |
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1952 Label has_counters; |
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1953 ld(Rcounters, in_bytes(Method::method_counters_offset()), method); |
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1954 cmpdi(CCR0, Rcounters, 0); |
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1955 bne(CCR0, has_counters); |
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1956 call_VM(noreg, CAST_FROM_FN_PTR(address, |
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1957 InterpreterRuntime::build_method_counters), method, false); |
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1958 ld(Rcounters, in_bytes(Method::method_counters_offset()), method); |
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1959 cmpdi(CCR0, Rcounters, 0); |
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1960 beq(CCR0, skip); // No MethodCounters, OutOfMemory. |
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1961 BLOCK_COMMENT("} Load and ev. allocate counter object"); |
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1962 |
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1963 bind(has_counters); |
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1964 } |
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1965 |
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1966 void InterpreterMacroAssembler::increment_invocation_counter(Register Rcounters, Register iv_be_count, Register Rtmp_r0) { |
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1967 assert(UseCompiler, "incrementing must be useful"); |
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1968 Register invocation_count = iv_be_count; |
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1969 Register backedge_count = Rtmp_r0; |
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1970 int delta = InvocationCounter::count_increment; |
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1971 |
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1972 // Load each counter in a register. |
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1973 // ld(inv_counter, Rtmp); |
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1974 // ld(be_counter, Rtmp2); |
|
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1975 int inv_counter_offset = in_bytes(MethodCounters::invocation_counter_offset() + |
|
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1976 InvocationCounter::counter_offset()); |
|
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1977 int be_counter_offset = in_bytes(MethodCounters::backedge_counter_offset() + |
|
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1978 InvocationCounter::counter_offset()); |
|
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1979 |
|
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1980 BLOCK_COMMENT("Increment profiling counters {"); |
|
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1981 |
|
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1982 // Load the backedge counter. |
|
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1983 lwz(backedge_count, be_counter_offset, Rcounters); // is unsigned int |
|
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1984 // Mask the backedge counter. |
|
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1985 Register tmp = invocation_count; |
|
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1986 li(tmp, InvocationCounter::count_mask_value); |
|
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1987 andr(backedge_count, tmp, backedge_count); // Cannot use andi, need sign extension of count_mask_value. |
|
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1988 |
|
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1989 // Load the invocation counter. |
|
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1990 lwz(invocation_count, inv_counter_offset, Rcounters); // is unsigned int |
|
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1991 // Add the delta to the invocation counter and store the result. |
|
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1992 addi(invocation_count, invocation_count, delta); |
|
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1993 // Store value. |
|
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1994 stw(invocation_count, inv_counter_offset, Rcounters); |
|
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|
1995 |
|
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1996 // Add invocation counter + backedge counter. |
|
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|
1997 add(iv_be_count, backedge_count, invocation_count); |
|
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1998 |
|
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1999 // Note that this macro must leave the backedge_count + invocation_count in |
|
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2000 // register iv_be_count! |
|
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|
2001 BLOCK_COMMENT("} Increment profiling counters"); |
|
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2002 } |
|
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|
2003 |
|
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2004 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { |
|
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2005 if (state == atos) { MacroAssembler::verify_oop(reg); } |
|
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|
2006 } |
|
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|
2007 |
| 17804 | 2008 #ifndef CC_INTERP |
| 2009 // Local helper function for the verify_oop_or_return_address macro. | |
| 2010 static bool verify_return_address(Method* m, int bci) { | |
| 2011 #ifndef PRODUCT | |
| 2012 address pc = (address)(m->constMethod()) + in_bytes(ConstMethod::codes_offset()) + bci; | |
| 2013 // Assume it is a valid return address if it is inside m and is preceded by a jsr. | |
| 2014 if (!m->contains(pc)) return false; | |
| 2015 address jsr_pc; | |
| 2016 jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr); | |
| 2017 if (*jsr_pc == Bytecodes::_jsr && jsr_pc >= m->code_base()) return true; | |
| 2018 jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr_w); | |
| 2019 if (*jsr_pc == Bytecodes::_jsr_w && jsr_pc >= m->code_base()) return true; | |
| 2020 #endif // PRODUCT | |
| 2021 return false; | |
| 2022 } | |
| 2023 | |
| 2024 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
| 2025 if (VerifyFPU) { | |
| 2026 unimplemented("verfiyFPU"); | |
| 2027 } | |
| 2028 } | |
| 2029 | |
| 2030 void InterpreterMacroAssembler::verify_oop_or_return_address(Register reg, Register Rtmp) { | |
| 2031 if (!VerifyOops) return; | |
| 2032 | |
| 2033 // The VM documentation for the astore[_wide] bytecode allows | |
| 2034 // the TOS to be not only an oop but also a return address. | |
| 2035 Label test; | |
| 2036 Label skip; | |
| 2037 // See if it is an address (in the current method): | |
| 2038 | |
| 2039 const int log2_bytecode_size_limit = 16; | |
| 2040 srdi_(Rtmp, reg, log2_bytecode_size_limit); | |
| 2041 bne(CCR0, test); | |
| 2042 | |
| 2043 address fd = CAST_FROM_FN_PTR(address, verify_return_address); | |
| 2044 unsigned int nbytes_save = 10*8; // 10 volatile gprs | |
| 2045 | |
| 2046 save_LR_CR(Rtmp); | |
| 2047 push_frame_reg_args(nbytes_save, Rtmp); | |
| 2048 save_volatile_gprs(R1_SP, 112); // except R0 | |
| 2049 | |
| 2050 load_const_optimized(Rtmp, fd, R0); | |
| 2051 mr_if_needed(R4_ARG2, reg); | |
| 2052 mr(R3_ARG1, R19_method); | |
| 2053 call_c(Rtmp); // call C | |
| 2054 | |
| 2055 restore_volatile_gprs(R1_SP, 112); // except R0 | |
| 2056 pop_frame(); | |
| 2057 restore_LR_CR(Rtmp); | |
| 2058 b(skip); | |
| 2059 | |
| 2060 // Perform a more elaborate out-of-line call. | |
| 2061 // Not an address; verify it: | |
| 2062 bind(test); | |
| 2063 verify_oop(reg); | |
| 2064 bind(skip); | |
| 2065 } | |
| 2066 #endif // !CC_INTERP | |
| 2067 | |
|
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2068 // Inline assembly for: |
|
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|
2069 // |
|
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|
2070 // if (thread is in interp_only_mode) { |
|
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2071 // InterpreterRuntime::post_method_entry(); |
|
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2072 // } |
|
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2073 // if (*jvmpi::event_flags_array_at_addr(JVMPI_EVENT_METHOD_ENTRY ) || |
|
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2074 // *jvmpi::event_flags_array_at_addr(JVMPI_EVENT_METHOD_ENTRY2) ) { |
|
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2075 // SharedRuntime::jvmpi_method_entry(method, receiver); |
|
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2076 // } |
|
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2077 void InterpreterMacroAssembler::notify_method_entry() { |
|
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|
2078 // JVMTI |
|
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2079 // Whenever JVMTI puts a thread in interp_only_mode, method |
|
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|
2080 // entry/exit events are sent for that thread to track stack |
|
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|
2081 // depth. If it is possible to enter interp_only_mode we add |
|
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2082 // the code to check if the event should be sent. |
|
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|
2083 if (JvmtiExport::can_post_interpreter_events()) { |
|
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|
2084 Label jvmti_post_done; |
|
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|
2085 |
|
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|
2086 lwz(R0, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); |
|
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|
2087 cmpwi(CCR0, R0, 0); |
|
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|
2088 beq(CCR0, jvmti_post_done); |
|
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|
2089 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry), |
| 17804 | 2090 /*check_exceptions=*/true CC_INTERP_ONLY(&& false)); |
|
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|
2091 |
|
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|
2092 bind(jvmti_post_done); |
|
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|
2093 } |
|
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|
2094 } |
|
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|
2095 |
|
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|
2096 // Inline assembly for: |
|
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|
2097 // |
|
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|
2098 // if (thread is in interp_only_mode) { |
|
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|
2099 // // save result |
|
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|
2100 // InterpreterRuntime::post_method_exit(); |
|
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|
2101 // // restore result |
|
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|
2102 // } |
|
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|
2103 // if (*jvmpi::event_flags_array_at_addr(JVMPI_EVENT_METHOD_EXIT)) { |
|
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|
2104 // // save result |
|
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|
2105 // SharedRuntime::jvmpi_method_exit(); |
|
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|
2106 // // restore result |
|
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|
2107 // } |
|
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|
2108 // |
|
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|
2109 // Native methods have their result stored in d_tmp and l_tmp. |
|
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|
2110 // Java methods have their result stored in the expression stack. |
| 17804 | 2111 void InterpreterMacroAssembler::notify_method_exit(bool is_native_method, TosState state, |
| 2112 NotifyMethodExitMode mode, bool check_exceptions) { | |
|
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|
2113 // JVMTI |
|
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|
2114 // Whenever JVMTI puts a thread in interp_only_mode, method |
|
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|
2115 // entry/exit events are sent for that thread to track stack |
|
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|
2116 // depth. If it is possible to enter interp_only_mode we add |
|
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|
2117 // the code to check if the event should be sent. |
| 17804 | 2118 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { |
|
14408
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|
2119 Label jvmti_post_done; |
|
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|
2120 |
|
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|
2121 lwz(R0, in_bytes(JavaThread::interp_only_mode_offset()), R16_thread); |
|
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|
2122 cmpwi(CCR0, R0, 0); |
|
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|
2123 beq(CCR0, jvmti_post_done); |
| 17804 | 2124 CC_INTERP_ONLY(assert(is_native_method && !check_exceptions, "must not push state")); |
| 2125 if (!is_native_method) push(state); // Expose tos to GC. | |
|
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|
2126 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit), |
| 17804 | 2127 /*check_exceptions=*/check_exceptions); |
| 2128 if (!is_native_method) pop(state); | |
|
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|
2129 |
| 14445 | 2130 align(32, 12); |
|
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|
2131 bind(jvmti_post_done); |
|
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|
2132 } |
| 17804 | 2133 |
| 2134 // Dtrace support not implemented. | |
|
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|
2135 } |
|
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|
2136 |
| 17804 | 2137 #ifdef CC_INTERP |
|
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|
2138 // Convert the current TOP_IJAVA_FRAME into a PARENT_IJAVA_FRAME |
|
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|
2139 // (using parent_frame_resize) and push a new interpreter |
|
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|
2140 // TOP_IJAVA_FRAME (using frame_size). |
|
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|
2141 void InterpreterMacroAssembler::push_interpreter_frame(Register top_frame_size, Register parent_frame_resize, |
|
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|
2142 Register tmp1, Register tmp2, Register tmp3, |
|
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|
2143 Register tmp4, Register pc) { |
|
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|
2144 assert_different_registers(top_frame_size, parent_frame_resize, tmp1, tmp2, tmp3, tmp4); |
|
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|
2145 ld(tmp1, _top_ijava_frame_abi(frame_manager_lr), R1_SP); |
|
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|
2146 mr(tmp2/*top_frame_sp*/, R1_SP); |
|
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|
2147 // Move initial_caller_sp. |
|
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|
2148 ld(tmp4, _top_ijava_frame_abi(initial_caller_sp), R1_SP); |
|
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|
2149 neg(parent_frame_resize, parent_frame_resize); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2150 resize_frame(parent_frame_resize/*-parent_frame_resize*/, tmp3); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2151 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2152 // Set LR in new parent frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2153 std(tmp1, _abi(lr), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2154 // Set top_frame_sp info for new parent frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2155 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
|
2156 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
|
2157 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2158 // Push new TOP_IJAVA_FRAME. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2159 push_frame(top_frame_size, tmp2); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2160 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2161 get_PC_trash_LR(tmp3); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2162 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
|
2163 // Used for non-initial callers by unextended_sp(). |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2164 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
|
2165 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2166 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2167 // 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
|
2168 // PARENT_IJAVA_FRAME back into a TOP_IJAVA_FRAME. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2169 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
|
2170 assert_different_registers(tmp1, tmp2, tmp3, tmp4); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2171 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2172 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
|
2173 ld(tmp3, _abi(lr), tmp1); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2174 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2175 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
|
2176 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2177 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
|
2178 // Merge top frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2179 std(tmp2, _abi(callers_sp), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2180 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2181 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
|
2182 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2183 // Update C stack pointer to caller's top_abi. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2184 resize_frame_absolute(tmp2/*addr*/, tmp1/*tmp*/, tmp2/*tmp*/); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2185 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2186 // Update LR in top_frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2187 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
|
2188 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2189 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
|
2190 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2191 // Store the top-frame stack-pointer for c2i adapters. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2192 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
|
2193 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2194 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2195 // 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
|
2196 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
|
2197 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
|
2198 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2199 if (state == R14_state) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2200 ld(tmp1/*state's fp*/, state_(_last_Java_fp)); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2201 ld(tmp2/*state's sp*/, state_(_last_Java_sp)); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2202 } else if (state == R15_prev_state) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2203 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
|
2204 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
|
2205 } else { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2206 ShouldNotReachHere(); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2207 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2208 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2209 // Merge top frames. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2210 std(tmp1, _abi(callers_sp), R1_SP); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2211 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2212 // Tmp2 is new SP. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2213 // Tmp1 is parent's SP. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2214 resize_frame_absolute(tmp2/*addr*/, tmp1/*tmp*/, tmp2/*tmp*/); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2215 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2216 // Update LR in top_frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2217 // Must be interpreter frame. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2218 get_PC_trash_LR(tmp3); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2219 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
|
2220 // Used for non-initial callers by unextended_sp(). |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2221 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
|
2222 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2223 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2224 // 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
|
2225 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
|
2226 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
|
2227 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
|
2228 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
|
2229 mr(R1_SP, tmp1); // ... and resize to initial caller. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2230 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2231 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2232 // Pop the current interpreter state (without popping the correspoding |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2233 // 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
|
2234 // 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
|
2235 // 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
|
2236 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
|
2237 { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2238 // 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
|
2239 Label prev_state_is_0; |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2240 mr(R14_state, R15_prev_state); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2241 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2242 // Don't retrieve /*state==*/prev_state_(_prev_link) |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2243 // if /*state==*/prev_state is 0. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2244 if (prev_state_may_be_0) { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2245 cmpdi(CCR0, R15_prev_state, 0); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2246 beq(CCR0, prev_state_is_0); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2247 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2248 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2249 ld(R15_prev_state, /*state==*/prev_state_(_prev_link)); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2250 bind(prev_state_is_0); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2251 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2252 |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2253 void InterpreterMacroAssembler::restore_prev_state() { |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2254 // _prev_link is private, but cInterpreter is a friend. |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2255 ld(R15_prev_state, state_(_prev_link)); |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2256 } |
|
ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
goetz
parents:
diff
changeset
|
2257 #endif // CC_INTERP |